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>
41 #include <drm/drm_atomic.h>
43 #include "drm_crtc_internal.h"
44 #include "drm_internal.h"
46 static struct drm_framebuffer *
47 internal_framebuffer_create(struct drm_device *dev,
48 struct drm_mode_fb_cmd2 *r,
49 struct drm_file *file_priv);
51 /* Avoid boilerplate. I'm tired of typing. */
52 #define DRM_ENUM_NAME_FN(fnname, list) \
53 const char *fnname(int val) \
56 for (i = 0; i < ARRAY_SIZE(list); i++) { \
57 if (list[i].type == val) \
58 return list[i].name; \
66 static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
67 { DRM_MODE_DPMS_ON, "On" },
68 { DRM_MODE_DPMS_STANDBY, "Standby" },
69 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
70 { DRM_MODE_DPMS_OFF, "Off" }
73 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
75 static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
76 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
77 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
78 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
84 static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
85 { DRM_MODE_SCALE_NONE, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
87 { DRM_MODE_SCALE_CENTER, "Center" },
88 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
101 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
102 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
103 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
106 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
108 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
109 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
110 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
111 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
114 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
115 drm_dvi_i_subconnector_enum_list)
117 static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
118 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
125 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
127 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
128 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
129 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
132 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
135 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
136 drm_tv_subconnector_enum_list)
138 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
139 { DRM_MODE_DIRTY_OFF, "Off" },
140 { DRM_MODE_DIRTY_ON, "On" },
141 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
144 struct drm_conn_prop_enum_list {
151 * Connector and encoder types.
153 static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
154 { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
155 { DRM_MODE_CONNECTOR_VGA, "VGA" },
156 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
157 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
158 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
159 { DRM_MODE_CONNECTOR_Composite, "Composite" },
160 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
161 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
162 { DRM_MODE_CONNECTOR_Component, "Component" },
163 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
164 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
165 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
166 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
167 { DRM_MODE_CONNECTOR_TV, "TV" },
168 { DRM_MODE_CONNECTOR_eDP, "eDP" },
169 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
170 { DRM_MODE_CONNECTOR_DSI, "DSI" },
173 static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
174 { DRM_MODE_ENCODER_NONE, "None" },
175 { DRM_MODE_ENCODER_DAC, "DAC" },
176 { DRM_MODE_ENCODER_TMDS, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC, "TV" },
179 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
180 { DRM_MODE_ENCODER_DSI, "DSI" },
181 { DRM_MODE_ENCODER_DPMST, "DP MST" },
184 static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
185 { SubPixelUnknown, "Unknown" },
186 { SubPixelHorizontalRGB, "Horizontal RGB" },
187 { SubPixelHorizontalBGR, "Horizontal BGR" },
188 { SubPixelVerticalRGB, "Vertical RGB" },
189 { SubPixelVerticalBGR, "Vertical BGR" },
190 { SubPixelNone, "None" },
193 void drm_connector_ida_init(void)
197 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
198 ida_init(&drm_connector_enum_list[i].ida);
201 void drm_connector_ida_destroy(void)
205 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
206 ida_destroy(&drm_connector_enum_list[i].ida);
210 * drm_get_connector_status_name - return a string for connector status
211 * @status: connector status to compute name of
213 * In contrast to the other drm_get_*_name functions this one here returns a
214 * const pointer and hence is threadsafe.
216 const char *drm_get_connector_status_name(enum drm_connector_status status)
218 if (status == connector_status_connected)
220 else if (status == connector_status_disconnected)
221 return "disconnected";
225 EXPORT_SYMBOL(drm_get_connector_status_name);
228 * drm_get_subpixel_order_name - return a string for a given subpixel enum
229 * @order: enum of subpixel_order
231 * Note you could abuse this and return something out of bounds, but that
232 * would be a caller error. No unscrubbed user data should make it here.
234 const char *drm_get_subpixel_order_name(enum subpixel_order order)
236 return drm_subpixel_enum_list[order].name;
238 EXPORT_SYMBOL(drm_get_subpixel_order_name);
240 static char printable_char(int c)
242 return isascii(c) && isprint(c) ? c : '?';
246 * drm_get_format_name - return a string for drm fourcc format
247 * @format: format to compute name of
249 * Note that the buffer used by this function is globally shared and owned by
250 * the function itself.
252 * FIXME: This isn't really multithreading safe.
254 const char *drm_get_format_name(uint32_t format)
258 snprintf(buf, sizeof(buf),
259 "%c%c%c%c %s-endian (0x%08x)",
260 printable_char(format & 0xff),
261 printable_char((format >> 8) & 0xff),
262 printable_char((format >> 16) & 0xff),
263 printable_char((format >> 24) & 0x7f),
264 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
269 EXPORT_SYMBOL(drm_get_format_name);
272 * Internal function to assign a slot in the object idr and optionally
273 * register the object into the idr.
275 static int drm_mode_object_get_reg(struct drm_device *dev,
276 struct drm_mode_object *obj,
282 mutex_lock(&dev->mode_config.idr_mutex);
283 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
286 * Set up the object linking under the protection of the idr
287 * lock so that other users can't see inconsistent state.
290 obj->type = obj_type;
292 mutex_unlock(&dev->mode_config.idr_mutex);
294 return ret < 0 ? ret : 0;
298 * drm_mode_object_get - allocate a new modeset identifier
300 * @obj: object pointer, used to generate unique ID
301 * @obj_type: object type
303 * Create a unique identifier based on @ptr in @dev's identifier space. Used
304 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
305 * modeset identifiers are _not_ reference counted. Hence don't use this for
306 * reference counted modeset objects like framebuffers.
309 * New unique (relative to other objects in @dev) integer identifier for the
312 int drm_mode_object_get(struct drm_device *dev,
313 struct drm_mode_object *obj, uint32_t obj_type)
315 return drm_mode_object_get_reg(dev, obj, obj_type, true);
318 static void drm_mode_object_register(struct drm_device *dev,
319 struct drm_mode_object *obj)
321 mutex_lock(&dev->mode_config.idr_mutex);
322 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
323 mutex_unlock(&dev->mode_config.idr_mutex);
327 * drm_mode_object_put - free a modeset identifer
329 * @object: object to free
331 * Free @id from @dev's unique identifier pool. Note that despite the _get
332 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
333 * for reference counted modeset objects like framebuffers.
335 void drm_mode_object_put(struct drm_device *dev,
336 struct drm_mode_object *object)
338 mutex_lock(&dev->mode_config.idr_mutex);
339 idr_remove(&dev->mode_config.crtc_idr, object->id);
340 mutex_unlock(&dev->mode_config.idr_mutex);
343 static struct drm_mode_object *_object_find(struct drm_device *dev,
344 uint32_t id, uint32_t type)
346 struct drm_mode_object *obj = NULL;
348 mutex_lock(&dev->mode_config.idr_mutex);
349 obj = idr_find(&dev->mode_config.crtc_idr, id);
350 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
352 if (obj && obj->id != id)
354 /* don't leak out unref'd fb's */
355 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
357 mutex_unlock(&dev->mode_config.idr_mutex);
363 * drm_mode_object_find - look up a drm object with static lifetime
365 * @id: id of the mode object
366 * @type: type of the mode object
368 * Note that framebuffers cannot be looked up with this functions - since those
369 * are reference counted, they need special treatment. Even with
370 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
371 * rather than WARN_ON()).
373 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
374 uint32_t id, uint32_t type)
376 struct drm_mode_object *obj = NULL;
378 /* Framebuffers are reference counted and need their own lookup
380 WARN_ON(type == DRM_MODE_OBJECT_FB);
381 obj = _object_find(dev, id, type);
384 EXPORT_SYMBOL(drm_mode_object_find);
387 * drm_framebuffer_init - initialize a framebuffer
389 * @fb: framebuffer to be initialized
390 * @funcs: ... with these functions
392 * Allocates an ID for the framebuffer's parent mode object, sets its mode
393 * functions & device file and adds it to the master fd list.
396 * This functions publishes the fb and makes it available for concurrent access
397 * by other users. Which means by this point the fb _must_ be fully set up -
398 * since all the fb attributes are invariant over its lifetime, no further
399 * locking but only correct reference counting is required.
402 * Zero on success, error code on failure.
404 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
405 const struct drm_framebuffer_funcs *funcs)
409 mutex_lock(&dev->mode_config.fb_lock);
410 kref_init(&fb->refcount);
411 INIT_LIST_HEAD(&fb->filp_head);
415 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
419 dev->mode_config.num_fb++;
420 list_add(&fb->head, &dev->mode_config.fb_list);
422 mutex_unlock(&dev->mode_config.fb_lock);
426 EXPORT_SYMBOL(drm_framebuffer_init);
428 /* dev->mode_config.fb_lock must be held! */
429 static void __drm_framebuffer_unregister(struct drm_device *dev,
430 struct drm_framebuffer *fb)
432 mutex_lock(&dev->mode_config.idr_mutex);
433 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
434 mutex_unlock(&dev->mode_config.idr_mutex);
439 static void drm_framebuffer_free(struct kref *kref)
441 struct drm_framebuffer *fb =
442 container_of(kref, struct drm_framebuffer, refcount);
443 struct drm_device *dev = fb->dev;
446 * The lookup idr holds a weak reference, which has not necessarily been
447 * removed at this point. Check for that.
449 mutex_lock(&dev->mode_config.fb_lock);
451 /* Mark fb as reaped and drop idr ref. */
452 __drm_framebuffer_unregister(dev, fb);
454 mutex_unlock(&dev->mode_config.fb_lock);
456 fb->funcs->destroy(fb);
459 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
462 struct drm_mode_object *obj = NULL;
463 struct drm_framebuffer *fb;
465 mutex_lock(&dev->mode_config.idr_mutex);
466 obj = idr_find(&dev->mode_config.crtc_idr, id);
467 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
471 mutex_unlock(&dev->mode_config.idr_mutex);
477 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
479 * @id: id of the fb object
481 * If successful, this grabs an additional reference to the framebuffer -
482 * callers need to make sure to eventually unreference the returned framebuffer
483 * again, using @drm_framebuffer_unreference.
485 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
488 struct drm_framebuffer *fb;
490 mutex_lock(&dev->mode_config.fb_lock);
491 fb = __drm_framebuffer_lookup(dev, id);
493 if (!kref_get_unless_zero(&fb->refcount))
496 mutex_unlock(&dev->mode_config.fb_lock);
500 EXPORT_SYMBOL(drm_framebuffer_lookup);
503 * drm_framebuffer_unreference - unref a framebuffer
504 * @fb: framebuffer to unref
506 * This functions decrements the fb's refcount and frees it if it drops to zero.
508 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
510 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
511 kref_put(&fb->refcount, drm_framebuffer_free);
513 EXPORT_SYMBOL(drm_framebuffer_unreference);
516 * drm_framebuffer_reference - incr the fb refcnt
519 * This functions increments the fb's refcount.
521 void drm_framebuffer_reference(struct drm_framebuffer *fb)
523 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
524 kref_get(&fb->refcount);
526 EXPORT_SYMBOL(drm_framebuffer_reference);
529 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
530 * @fb: fb to unregister
532 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
533 * those used for fbdev. Note that the caller must hold a reference of it's own,
534 * i.e. the object may not be destroyed through this call (since it'll lead to a
535 * locking inversion).
537 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
539 struct drm_device *dev = fb->dev;
541 mutex_lock(&dev->mode_config.fb_lock);
542 /* Mark fb as reaped and drop idr ref. */
543 __drm_framebuffer_unregister(dev, fb);
544 mutex_unlock(&dev->mode_config.fb_lock);
546 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
549 * drm_framebuffer_cleanup - remove a framebuffer object
550 * @fb: framebuffer to remove
552 * Cleanup framebuffer. This function is intended to be used from the drivers
553 * ->destroy callback. It can also be used to clean up driver private
554 * framebuffers embedded into a larger structure.
556 * Note that this function does not remove the fb from active usuage - if it is
557 * still used anywhere, hilarity can ensue since userspace could call getfb on
558 * the id and get back -EINVAL. Obviously no concern at driver unload time.
560 * Also, the framebuffer will not be removed from the lookup idr - for
561 * user-created framebuffers this will happen in in the rmfb ioctl. For
562 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
563 * drm_framebuffer_unregister_private.
565 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
567 struct drm_device *dev = fb->dev;
569 mutex_lock(&dev->mode_config.fb_lock);
571 dev->mode_config.num_fb--;
572 mutex_unlock(&dev->mode_config.fb_lock);
574 EXPORT_SYMBOL(drm_framebuffer_cleanup);
577 * drm_framebuffer_remove - remove and unreference a framebuffer object
578 * @fb: framebuffer to remove
580 * Scans all the CRTCs and planes in @dev's mode_config. If they're
581 * using @fb, removes it, setting it to NULL. Then drops the reference to the
582 * passed-in framebuffer. Might take the modeset locks.
584 * Note that this function optimizes the cleanup away if the caller holds the
585 * last reference to the framebuffer. It is also guaranteed to not take the
586 * modeset locks in this case.
588 void drm_framebuffer_remove(struct drm_framebuffer *fb)
590 struct drm_device *dev = fb->dev;
591 struct drm_crtc *crtc;
592 struct drm_plane *plane;
593 struct drm_mode_set set;
596 WARN_ON(!list_empty(&fb->filp_head));
599 * drm ABI mandates that we remove any deleted framebuffers from active
600 * useage. But since most sane clients only remove framebuffers they no
601 * longer need, try to optimize this away.
603 * Since we're holding a reference ourselves, observing a refcount of 1
604 * means that we're the last holder and can skip it. Also, the refcount
605 * can never increase from 1 again, so we don't need any barriers or
608 * Note that userspace could try to race with use and instate a new
609 * usage _after_ we've cleared all current ones. End result will be an
610 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
613 if (atomic_read(&fb->refcount.refcount) > 1) {
614 drm_modeset_lock_all(dev);
615 /* remove from any CRTC */
616 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
617 if (crtc->primary->fb == fb) {
618 /* should turn off the crtc */
619 memset(&set, 0, sizeof(struct drm_mode_set));
622 ret = drm_mode_set_config_internal(&set);
624 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
628 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
630 drm_plane_force_disable(plane);
632 drm_modeset_unlock_all(dev);
635 drm_framebuffer_unreference(fb);
637 EXPORT_SYMBOL(drm_framebuffer_remove);
639 DEFINE_WW_CLASS(crtc_ww_class);
642 * drm_crtc_init_with_planes - Initialise a new CRTC object with
643 * specified primary and cursor planes.
645 * @crtc: CRTC object to init
646 * @primary: Primary plane for CRTC
647 * @cursor: Cursor plane for CRTC
648 * @funcs: callbacks for the new CRTC
650 * Inits a new object created as base part of a driver crtc object.
653 * Zero on success, error code on failure.
655 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
656 struct drm_plane *primary,
657 struct drm_plane *cursor,
658 const struct drm_crtc_funcs *funcs)
660 struct drm_mode_config *config = &dev->mode_config;
665 crtc->invert_dimensions = false;
667 drm_modeset_lock_init(&crtc->mutex);
668 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
672 crtc->base.properties = &crtc->properties;
674 list_add_tail(&crtc->head, &config->crtc_list);
677 crtc->primary = primary;
678 crtc->cursor = cursor;
680 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
682 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
684 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
685 drm_object_attach_property(&crtc->base, config->prop_active, 0);
690 EXPORT_SYMBOL(drm_crtc_init_with_planes);
693 * drm_crtc_cleanup - Clean up the core crtc usage
694 * @crtc: CRTC to cleanup
696 * This function cleans up @crtc and removes it from the DRM mode setting
697 * core. Note that the function does *not* free the crtc structure itself,
698 * this is the responsibility of the caller.
700 void drm_crtc_cleanup(struct drm_crtc *crtc)
702 struct drm_device *dev = crtc->dev;
704 kfree(crtc->gamma_store);
705 crtc->gamma_store = NULL;
707 drm_modeset_lock_fini(&crtc->mutex);
709 drm_mode_object_put(dev, &crtc->base);
710 list_del(&crtc->head);
711 dev->mode_config.num_crtc--;
713 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
714 if (crtc->state && crtc->funcs->atomic_destroy_state)
715 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
717 memset(crtc, 0, sizeof(*crtc));
719 EXPORT_SYMBOL(drm_crtc_cleanup);
722 * drm_crtc_index - find the index of a registered CRTC
723 * @crtc: CRTC to find index for
725 * Given a registered CRTC, return the index of that CRTC within a DRM
726 * device's list of CRTCs.
728 unsigned int drm_crtc_index(struct drm_crtc *crtc)
730 unsigned int index = 0;
731 struct drm_crtc *tmp;
733 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
742 EXPORT_SYMBOL(drm_crtc_index);
745 * drm_mode_remove - remove and free a mode
746 * @connector: connector list to modify
747 * @mode: mode to remove
749 * Remove @mode from @connector's mode list, then free it.
751 static void drm_mode_remove(struct drm_connector *connector,
752 struct drm_display_mode *mode)
754 list_del(&mode->head);
755 drm_mode_destroy(connector->dev, mode);
759 * drm_display_info_set_bus_formats - set the supported bus formats
760 * @info: display info to store bus formats in
761 * @formats: array containing the supported bus formats
762 * @num_formats: the number of entries in the fmts array
764 * Store the supported bus formats in display info structure.
765 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
766 * a full list of available formats.
768 int drm_display_info_set_bus_formats(struct drm_display_info *info,
770 unsigned int num_formats)
774 if (!formats && num_formats)
777 if (formats && num_formats) {
778 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
784 kfree(info->bus_formats);
785 info->bus_formats = fmts;
786 info->num_bus_formats = num_formats;
790 EXPORT_SYMBOL(drm_display_info_set_bus_formats);
793 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
794 * @connector: connector to quwery
796 * The kernel supports per-connector configration of its consoles through
797 * use of the video= parameter. This function parses that option and
798 * extracts the user's specified mode (or enable/disable status) for a
799 * particular connector. This is typically only used during the early fbdev
802 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
804 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
807 if (fb_get_options(connector->name, &option))
810 if (!drm_mode_parse_command_line_for_connector(option,
818 switch (mode->force) {
822 case DRM_FORCE_ON_DIGITAL:
831 DRM_INFO("forcing %s connector %s\n", connector->name, s);
832 connector->force = mode->force;
835 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
837 mode->xres, mode->yres,
838 mode->refresh_specified ? mode->refresh : 60,
839 mode->rb ? " reduced blanking" : "",
840 mode->margins ? " with margins" : "",
841 mode->interlace ? " interlaced" : "");
845 * drm_connector_init - Init a preallocated connector
847 * @connector: the connector to init
848 * @funcs: callbacks for this connector
849 * @connector_type: user visible type of the connector
851 * Initialises a preallocated connector. Connectors should be
852 * subclassed as part of driver connector objects.
855 * Zero on success, error code on failure.
857 int drm_connector_init(struct drm_device *dev,
858 struct drm_connector *connector,
859 const struct drm_connector_funcs *funcs,
862 struct drm_mode_config *config = &dev->mode_config;
864 struct ida *connector_ida =
865 &drm_connector_enum_list[connector_type].ida;
867 drm_modeset_lock_all(dev);
869 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
873 connector->base.properties = &connector->properties;
874 connector->dev = dev;
875 connector->funcs = funcs;
876 connector->connector_type = connector_type;
877 connector->connector_type_id =
878 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
879 if (connector->connector_type_id < 0) {
880 ret = connector->connector_type_id;
884 kasprintf(GFP_KERNEL, "%s-%d",
885 drm_connector_enum_list[connector_type].name,
886 connector->connector_type_id);
887 if (!connector->name) {
892 INIT_LIST_HEAD(&connector->probed_modes);
893 INIT_LIST_HEAD(&connector->modes);
894 connector->edid_blob_ptr = NULL;
895 connector->status = connector_status_unknown;
897 drm_connector_get_cmdline_mode(connector);
899 /* We should add connectors at the end to avoid upsetting the connector
901 list_add_tail(&connector->head, &config->connector_list);
902 config->num_connector++;
904 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
905 drm_object_attach_property(&connector->base,
906 config->edid_property,
909 drm_object_attach_property(&connector->base,
910 config->dpms_property, 0);
912 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
913 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
916 connector->debugfs_entry = NULL;
920 drm_mode_object_put(dev, &connector->base);
923 drm_modeset_unlock_all(dev);
927 EXPORT_SYMBOL(drm_connector_init);
930 * drm_connector_cleanup - cleans up an initialised connector
931 * @connector: connector to cleanup
933 * Cleans up the connector but doesn't free the object.
935 void drm_connector_cleanup(struct drm_connector *connector)
937 struct drm_device *dev = connector->dev;
938 struct drm_display_mode *mode, *t;
940 if (connector->tile_group) {
941 drm_mode_put_tile_group(dev, connector->tile_group);
942 connector->tile_group = NULL;
945 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
946 drm_mode_remove(connector, mode);
948 list_for_each_entry_safe(mode, t, &connector->modes, head)
949 drm_mode_remove(connector, mode);
951 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
952 connector->connector_type_id);
954 kfree(connector->display_info.bus_formats);
955 drm_mode_object_put(dev, &connector->base);
956 kfree(connector->name);
957 connector->name = NULL;
958 list_del(&connector->head);
959 dev->mode_config.num_connector--;
961 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
962 if (connector->state && connector->funcs->atomic_destroy_state)
963 connector->funcs->atomic_destroy_state(connector,
966 memset(connector, 0, sizeof(*connector));
968 EXPORT_SYMBOL(drm_connector_cleanup);
971 * drm_connector_index - find the index of a registered connector
972 * @connector: connector to find index for
974 * Given a registered connector, return the index of that connector within a DRM
975 * device's list of connectors.
977 unsigned int drm_connector_index(struct drm_connector *connector)
979 unsigned int index = 0;
980 struct drm_connector *tmp;
981 struct drm_mode_config *config = &connector->dev->mode_config;
983 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
985 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
986 if (tmp == connector)
994 EXPORT_SYMBOL(drm_connector_index);
997 * drm_connector_register - register a connector
998 * @connector: the connector to register
1000 * Register userspace interfaces for a connector
1003 * Zero on success, error code on failure.
1005 int drm_connector_register(struct drm_connector *connector)
1009 drm_mode_object_register(connector->dev, &connector->base);
1011 ret = drm_sysfs_connector_add(connector);
1015 ret = drm_debugfs_connector_add(connector);
1017 drm_sysfs_connector_remove(connector);
1023 EXPORT_SYMBOL(drm_connector_register);
1026 * drm_connector_unregister - unregister a connector
1027 * @connector: the connector to unregister
1029 * Unregister userspace interfaces for a connector
1031 void drm_connector_unregister(struct drm_connector *connector)
1033 drm_sysfs_connector_remove(connector);
1034 drm_debugfs_connector_remove(connector);
1036 EXPORT_SYMBOL(drm_connector_unregister);
1040 * drm_connector_unplug_all - unregister connector userspace interfaces
1043 * This function unregisters all connector userspace interfaces in sysfs. Should
1044 * be call when the device is disconnected, e.g. from an usb driver's
1045 * ->disconnect callback.
1047 void drm_connector_unplug_all(struct drm_device *dev)
1049 struct drm_connector *connector;
1051 /* taking the mode config mutex ends up in a clash with sysfs */
1052 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1053 drm_connector_unregister(connector);
1056 EXPORT_SYMBOL(drm_connector_unplug_all);
1059 * drm_encoder_init - Init a preallocated encoder
1061 * @encoder: the encoder to init
1062 * @funcs: callbacks for this encoder
1063 * @encoder_type: user visible type of the encoder
1065 * Initialises a preallocated encoder. Encoder should be
1066 * subclassed as part of driver encoder objects.
1069 * Zero on success, error code on failure.
1071 int drm_encoder_init(struct drm_device *dev,
1072 struct drm_encoder *encoder,
1073 const struct drm_encoder_funcs *funcs,
1078 drm_modeset_lock_all(dev);
1080 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1085 encoder->encoder_type = encoder_type;
1086 encoder->funcs = funcs;
1087 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1088 drm_encoder_enum_list[encoder_type].name,
1090 if (!encoder->name) {
1095 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1096 dev->mode_config.num_encoder++;
1100 drm_mode_object_put(dev, &encoder->base);
1103 drm_modeset_unlock_all(dev);
1107 EXPORT_SYMBOL(drm_encoder_init);
1110 * drm_encoder_cleanup - cleans up an initialised encoder
1111 * @encoder: encoder to cleanup
1113 * Cleans up the encoder but doesn't free the object.
1115 void drm_encoder_cleanup(struct drm_encoder *encoder)
1117 struct drm_device *dev = encoder->dev;
1119 drm_modeset_lock_all(dev);
1120 drm_mode_object_put(dev, &encoder->base);
1121 kfree(encoder->name);
1122 list_del(&encoder->head);
1123 dev->mode_config.num_encoder--;
1124 drm_modeset_unlock_all(dev);
1126 memset(encoder, 0, sizeof(*encoder));
1128 EXPORT_SYMBOL(drm_encoder_cleanup);
1131 * drm_universal_plane_init - Initialize a new universal plane object
1133 * @plane: plane object to init
1134 * @possible_crtcs: bitmask of possible CRTCs
1135 * @funcs: callbacks for the new plane
1136 * @formats: array of supported formats (%DRM_FORMAT_*)
1137 * @format_count: number of elements in @formats
1138 * @type: type of plane (overlay, primary, cursor)
1140 * Initializes a plane object of type @type.
1143 * Zero on success, error code on failure.
1145 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1146 unsigned long possible_crtcs,
1147 const struct drm_plane_funcs *funcs,
1148 const uint32_t *formats, uint32_t format_count,
1149 enum drm_plane_type type)
1151 struct drm_mode_config *config = &dev->mode_config;
1154 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1158 drm_modeset_lock_init(&plane->mutex);
1160 plane->base.properties = &plane->properties;
1162 plane->funcs = funcs;
1163 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1165 if (!plane->format_types) {
1166 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1167 drm_mode_object_put(dev, &plane->base);
1171 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1172 plane->format_count = format_count;
1173 plane->possible_crtcs = possible_crtcs;
1176 list_add_tail(&plane->head, &config->plane_list);
1177 config->num_total_plane++;
1178 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1179 config->num_overlay_plane++;
1181 drm_object_attach_property(&plane->base,
1182 config->plane_type_property,
1185 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1186 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1187 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1188 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1189 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1190 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1191 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1192 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1193 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1194 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1195 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1200 EXPORT_SYMBOL(drm_universal_plane_init);
1203 * drm_plane_init - Initialize a legacy plane
1205 * @plane: plane object to init
1206 * @possible_crtcs: bitmask of possible CRTCs
1207 * @funcs: callbacks for the new plane
1208 * @formats: array of supported formats (%DRM_FORMAT_*)
1209 * @format_count: number of elements in @formats
1210 * @is_primary: plane type (primary vs overlay)
1212 * Legacy API to initialize a DRM plane.
1214 * New drivers should call drm_universal_plane_init() instead.
1217 * Zero on success, error code on failure.
1219 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1220 unsigned long possible_crtcs,
1221 const struct drm_plane_funcs *funcs,
1222 const uint32_t *formats, uint32_t format_count,
1225 enum drm_plane_type type;
1227 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1228 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1229 formats, format_count, type);
1231 EXPORT_SYMBOL(drm_plane_init);
1234 * drm_plane_cleanup - Clean up the core plane usage
1235 * @plane: plane to cleanup
1237 * This function cleans up @plane and removes it from the DRM mode setting
1238 * core. Note that the function does *not* free the plane structure itself,
1239 * this is the responsibility of the caller.
1241 void drm_plane_cleanup(struct drm_plane *plane)
1243 struct drm_device *dev = plane->dev;
1245 drm_modeset_lock_all(dev);
1246 kfree(plane->format_types);
1247 drm_mode_object_put(dev, &plane->base);
1249 BUG_ON(list_empty(&plane->head));
1251 list_del(&plane->head);
1252 dev->mode_config.num_total_plane--;
1253 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1254 dev->mode_config.num_overlay_plane--;
1255 drm_modeset_unlock_all(dev);
1257 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1258 if (plane->state && plane->funcs->atomic_destroy_state)
1259 plane->funcs->atomic_destroy_state(plane, plane->state);
1261 memset(plane, 0, sizeof(*plane));
1263 EXPORT_SYMBOL(drm_plane_cleanup);
1266 * drm_plane_index - find the index of a registered plane
1267 * @plane: plane to find index for
1269 * Given a registered plane, return the index of that CRTC within a DRM
1270 * device's list of planes.
1272 unsigned int drm_plane_index(struct drm_plane *plane)
1274 unsigned int index = 0;
1275 struct drm_plane *tmp;
1277 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1286 EXPORT_SYMBOL(drm_plane_index);
1289 * drm_plane_force_disable - Forcibly disable a plane
1290 * @plane: plane to disable
1292 * Forces the plane to be disabled.
1294 * Used when the plane's current framebuffer is destroyed,
1295 * and when restoring fbdev mode.
1297 void drm_plane_force_disable(struct drm_plane *plane)
1304 plane->old_fb = plane->fb;
1305 ret = plane->funcs->disable_plane(plane);
1307 DRM_ERROR("failed to disable plane with busy fb\n");
1308 plane->old_fb = NULL;
1311 /* disconnect the plane from the fb and crtc: */
1312 drm_framebuffer_unreference(plane->old_fb);
1313 plane->old_fb = NULL;
1317 EXPORT_SYMBOL(drm_plane_force_disable);
1319 static int drm_mode_create_standard_properties(struct drm_device *dev)
1321 struct drm_property *prop;
1324 * Standard properties (apply to all connectors)
1326 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1327 DRM_MODE_PROP_IMMUTABLE,
1331 dev->mode_config.edid_property = prop;
1333 prop = drm_property_create_enum(dev, 0,
1334 "DPMS", drm_dpms_enum_list,
1335 ARRAY_SIZE(drm_dpms_enum_list));
1338 dev->mode_config.dpms_property = prop;
1340 prop = drm_property_create(dev,
1341 DRM_MODE_PROP_BLOB |
1342 DRM_MODE_PROP_IMMUTABLE,
1346 dev->mode_config.path_property = prop;
1348 prop = drm_property_create(dev,
1349 DRM_MODE_PROP_BLOB |
1350 DRM_MODE_PROP_IMMUTABLE,
1354 dev->mode_config.tile_property = prop;
1356 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1357 "type", drm_plane_type_enum_list,
1358 ARRAY_SIZE(drm_plane_type_enum_list));
1361 dev->mode_config.plane_type_property = prop;
1363 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1364 "SRC_X", 0, UINT_MAX);
1367 dev->mode_config.prop_src_x = prop;
1369 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1370 "SRC_Y", 0, UINT_MAX);
1373 dev->mode_config.prop_src_y = prop;
1375 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1376 "SRC_W", 0, UINT_MAX);
1379 dev->mode_config.prop_src_w = prop;
1381 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1382 "SRC_H", 0, UINT_MAX);
1385 dev->mode_config.prop_src_h = prop;
1387 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1388 "CRTC_X", INT_MIN, INT_MAX);
1391 dev->mode_config.prop_crtc_x = prop;
1393 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1394 "CRTC_Y", INT_MIN, INT_MAX);
1397 dev->mode_config.prop_crtc_y = prop;
1399 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1400 "CRTC_W", 0, INT_MAX);
1403 dev->mode_config.prop_crtc_w = prop;
1405 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1406 "CRTC_H", 0, INT_MAX);
1409 dev->mode_config.prop_crtc_h = prop;
1411 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1412 "FB_ID", DRM_MODE_OBJECT_FB);
1415 dev->mode_config.prop_fb_id = prop;
1417 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1418 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1421 dev->mode_config.prop_crtc_id = prop;
1423 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1427 dev->mode_config.prop_active = prop;
1433 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1436 * Called by a driver the first time a DVI-I connector is made.
1438 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1440 struct drm_property *dvi_i_selector;
1441 struct drm_property *dvi_i_subconnector;
1443 if (dev->mode_config.dvi_i_select_subconnector_property)
1447 drm_property_create_enum(dev, 0,
1448 "select subconnector",
1449 drm_dvi_i_select_enum_list,
1450 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1451 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1453 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1455 drm_dvi_i_subconnector_enum_list,
1456 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1457 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1461 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1464 * drm_create_tv_properties - create TV specific connector properties
1466 * @num_modes: number of different TV formats (modes) supported
1467 * @modes: array of pointers to strings containing name of each format
1469 * Called by a driver's TV initialization routine, this function creates
1470 * the TV specific connector properties for a given device. Caller is
1471 * responsible for allocating a list of format names and passing them to
1474 int drm_mode_create_tv_properties(struct drm_device *dev,
1475 unsigned int num_modes,
1478 struct drm_property *tv_selector;
1479 struct drm_property *tv_subconnector;
1482 if (dev->mode_config.tv_select_subconnector_property)
1486 * Basic connector properties
1488 tv_selector = drm_property_create_enum(dev, 0,
1489 "select subconnector",
1490 drm_tv_select_enum_list,
1491 ARRAY_SIZE(drm_tv_select_enum_list));
1492 dev->mode_config.tv_select_subconnector_property = tv_selector;
1495 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1497 drm_tv_subconnector_enum_list,
1498 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1499 dev->mode_config.tv_subconnector_property = tv_subconnector;
1502 * Other, TV specific properties: margins & TV modes.
1504 dev->mode_config.tv_left_margin_property =
1505 drm_property_create_range(dev, 0, "left margin", 0, 100);
1507 dev->mode_config.tv_right_margin_property =
1508 drm_property_create_range(dev, 0, "right margin", 0, 100);
1510 dev->mode_config.tv_top_margin_property =
1511 drm_property_create_range(dev, 0, "top margin", 0, 100);
1513 dev->mode_config.tv_bottom_margin_property =
1514 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1516 dev->mode_config.tv_mode_property =
1517 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1519 for (i = 0; i < num_modes; i++)
1520 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1523 dev->mode_config.tv_brightness_property =
1524 drm_property_create_range(dev, 0, "brightness", 0, 100);
1526 dev->mode_config.tv_contrast_property =
1527 drm_property_create_range(dev, 0, "contrast", 0, 100);
1529 dev->mode_config.tv_flicker_reduction_property =
1530 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1532 dev->mode_config.tv_overscan_property =
1533 drm_property_create_range(dev, 0, "overscan", 0, 100);
1535 dev->mode_config.tv_saturation_property =
1536 drm_property_create_range(dev, 0, "saturation", 0, 100);
1538 dev->mode_config.tv_hue_property =
1539 drm_property_create_range(dev, 0, "hue", 0, 100);
1543 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1546 * drm_mode_create_scaling_mode_property - create scaling mode property
1549 * Called by a driver the first time it's needed, must be attached to desired
1552 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1554 struct drm_property *scaling_mode;
1556 if (dev->mode_config.scaling_mode_property)
1560 drm_property_create_enum(dev, 0, "scaling mode",
1561 drm_scaling_mode_enum_list,
1562 ARRAY_SIZE(drm_scaling_mode_enum_list));
1564 dev->mode_config.scaling_mode_property = scaling_mode;
1568 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1571 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1574 * Called by a driver the first time it's needed, must be attached to desired
1578 * Zero on success, negative errno on failure.
1580 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1582 if (dev->mode_config.aspect_ratio_property)
1585 dev->mode_config.aspect_ratio_property =
1586 drm_property_create_enum(dev, 0, "aspect ratio",
1587 drm_aspect_ratio_enum_list,
1588 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1590 if (dev->mode_config.aspect_ratio_property == NULL)
1595 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1598 * drm_mode_create_dirty_property - create dirty property
1601 * Called by a driver the first time it's needed, must be attached to desired
1604 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1606 struct drm_property *dirty_info;
1608 if (dev->mode_config.dirty_info_property)
1612 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1614 drm_dirty_info_enum_list,
1615 ARRAY_SIZE(drm_dirty_info_enum_list));
1616 dev->mode_config.dirty_info_property = dirty_info;
1620 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1623 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1626 * Create the the suggested x/y offset property for connectors.
1628 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1630 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1633 dev->mode_config.suggested_x_property =
1634 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1636 dev->mode_config.suggested_y_property =
1637 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1639 if (dev->mode_config.suggested_x_property == NULL ||
1640 dev->mode_config.suggested_y_property == NULL)
1644 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1646 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1648 uint32_t total_objects = 0;
1650 total_objects += dev->mode_config.num_crtc;
1651 total_objects += dev->mode_config.num_connector;
1652 total_objects += dev->mode_config.num_encoder;
1654 group->id_list = kcalloc(total_objects, sizeof(uint32_t), GFP_KERNEL);
1655 if (!group->id_list)
1658 group->num_crtcs = 0;
1659 group->num_connectors = 0;
1660 group->num_encoders = 0;
1664 void drm_mode_group_destroy(struct drm_mode_group *group)
1666 kfree(group->id_list);
1667 group->id_list = NULL;
1671 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1672 * the drm core's responsibility to set up mode control groups.
1674 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1675 struct drm_mode_group *group)
1677 struct drm_crtc *crtc;
1678 struct drm_encoder *encoder;
1679 struct drm_connector *connector;
1682 ret = drm_mode_group_init(dev, group);
1686 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1687 group->id_list[group->num_crtcs++] = crtc->base.id;
1689 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1690 group->id_list[group->num_crtcs + group->num_encoders++] =
1693 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1694 group->id_list[group->num_crtcs + group->num_encoders +
1695 group->num_connectors++] = connector->base.id;
1699 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1701 void drm_reinit_primary_mode_group(struct drm_device *dev)
1703 drm_modeset_lock_all(dev);
1704 drm_mode_group_destroy(&dev->primary->mode_group);
1705 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1706 drm_modeset_unlock_all(dev);
1708 EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1711 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1712 * @out: drm_mode_modeinfo struct to return to the user
1713 * @in: drm_display_mode to use
1715 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1718 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1719 const struct drm_display_mode *in)
1721 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1722 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1723 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1724 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1725 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1726 "timing values too large for mode info\n");
1728 out->clock = in->clock;
1729 out->hdisplay = in->hdisplay;
1730 out->hsync_start = in->hsync_start;
1731 out->hsync_end = in->hsync_end;
1732 out->htotal = in->htotal;
1733 out->hskew = in->hskew;
1734 out->vdisplay = in->vdisplay;
1735 out->vsync_start = in->vsync_start;
1736 out->vsync_end = in->vsync_end;
1737 out->vtotal = in->vtotal;
1738 out->vscan = in->vscan;
1739 out->vrefresh = in->vrefresh;
1740 out->flags = in->flags;
1741 out->type = in->type;
1742 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1743 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1747 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1748 * @out: drm_display_mode to return to the user
1749 * @in: drm_mode_modeinfo to use
1751 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1755 * Zero on success, negative errno on failure.
1757 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1758 const struct drm_mode_modeinfo *in)
1760 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1763 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1766 out->clock = in->clock;
1767 out->hdisplay = in->hdisplay;
1768 out->hsync_start = in->hsync_start;
1769 out->hsync_end = in->hsync_end;
1770 out->htotal = in->htotal;
1771 out->hskew = in->hskew;
1772 out->vdisplay = in->vdisplay;
1773 out->vsync_start = in->vsync_start;
1774 out->vsync_end = in->vsync_end;
1775 out->vtotal = in->vtotal;
1776 out->vscan = in->vscan;
1777 out->vrefresh = in->vrefresh;
1778 out->flags = in->flags;
1779 out->type = in->type;
1780 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1781 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1787 * drm_mode_getresources - get graphics configuration
1788 * @dev: drm device for the ioctl
1789 * @data: data pointer for the ioctl
1790 * @file_priv: drm file for the ioctl call
1792 * Construct a set of configuration description structures and return
1793 * them to the user, including CRTC, connector and framebuffer configuration.
1795 * Called by the user via ioctl.
1798 * Zero on success, negative errno on failure.
1800 int drm_mode_getresources(struct drm_device *dev, void *data,
1801 struct drm_file *file_priv)
1803 struct drm_mode_card_res *card_res = data;
1804 struct list_head *lh;
1805 struct drm_framebuffer *fb;
1806 struct drm_connector *connector;
1807 struct drm_crtc *crtc;
1808 struct drm_encoder *encoder;
1810 int connector_count = 0;
1813 int encoder_count = 0;
1815 uint32_t __user *fb_id;
1816 uint32_t __user *crtc_id;
1817 uint32_t __user *connector_id;
1818 uint32_t __user *encoder_id;
1819 struct drm_mode_group *mode_group;
1821 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1825 mutex_lock(&file_priv->fbs_lock);
1827 * For the non-control nodes we need to limit the list of resources
1828 * by IDs in the group list for this node
1830 list_for_each(lh, &file_priv->fbs)
1833 /* handle this in 4 parts */
1835 if (card_res->count_fbs >= fb_count) {
1837 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1838 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1839 if (put_user(fb->base.id, fb_id + copied)) {
1840 mutex_unlock(&file_priv->fbs_lock);
1846 card_res->count_fbs = fb_count;
1847 mutex_unlock(&file_priv->fbs_lock);
1849 /* mode_config.mutex protects the connector list against e.g. DP MST
1850 * connector hot-adding. CRTC/Plane lists are invariant. */
1851 mutex_lock(&dev->mode_config.mutex);
1852 if (!drm_is_primary_client(file_priv)) {
1855 list_for_each(lh, &dev->mode_config.crtc_list)
1858 list_for_each(lh, &dev->mode_config.connector_list)
1861 list_for_each(lh, &dev->mode_config.encoder_list)
1865 mode_group = &file_priv->master->minor->mode_group;
1866 crtc_count = mode_group->num_crtcs;
1867 connector_count = mode_group->num_connectors;
1868 encoder_count = mode_group->num_encoders;
1871 card_res->max_height = dev->mode_config.max_height;
1872 card_res->min_height = dev->mode_config.min_height;
1873 card_res->max_width = dev->mode_config.max_width;
1874 card_res->min_width = dev->mode_config.min_width;
1877 if (card_res->count_crtcs >= crtc_count) {
1879 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1881 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1883 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1884 if (put_user(crtc->base.id, crtc_id + copied)) {
1891 for (i = 0; i < mode_group->num_crtcs; i++) {
1892 if (put_user(mode_group->id_list[i],
1893 crtc_id + copied)) {
1901 card_res->count_crtcs = crtc_count;
1904 if (card_res->count_encoders >= encoder_count) {
1906 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1908 list_for_each_entry(encoder,
1909 &dev->mode_config.encoder_list,
1911 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1913 if (put_user(encoder->base.id, encoder_id +
1921 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1922 if (put_user(mode_group->id_list[i],
1923 encoder_id + copied)) {
1932 card_res->count_encoders = encoder_count;
1935 if (card_res->count_connectors >= connector_count) {
1937 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1939 list_for_each_entry(connector,
1940 &dev->mode_config.connector_list,
1942 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1945 if (put_user(connector->base.id,
1946 connector_id + copied)) {
1953 int start = mode_group->num_crtcs +
1954 mode_group->num_encoders;
1955 for (i = start; i < start + mode_group->num_connectors; i++) {
1956 if (put_user(mode_group->id_list[i],
1957 connector_id + copied)) {
1965 card_res->count_connectors = connector_count;
1967 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1968 card_res->count_connectors, card_res->count_encoders);
1971 mutex_unlock(&dev->mode_config.mutex);
1976 * drm_mode_getcrtc - get CRTC configuration
1977 * @dev: drm device for the ioctl
1978 * @data: data pointer for the ioctl
1979 * @file_priv: drm file for the ioctl call
1981 * Construct a CRTC configuration structure to return to the user.
1983 * Called by the user via ioctl.
1986 * Zero on success, negative errno on failure.
1988 int drm_mode_getcrtc(struct drm_device *dev,
1989 void *data, struct drm_file *file_priv)
1991 struct drm_mode_crtc *crtc_resp = data;
1992 struct drm_crtc *crtc;
1994 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1997 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
2001 drm_modeset_lock_crtc(crtc, crtc->primary);
2002 crtc_resp->x = crtc->x;
2003 crtc_resp->y = crtc->y;
2004 crtc_resp->gamma_size = crtc->gamma_size;
2005 if (crtc->primary->fb)
2006 crtc_resp->fb_id = crtc->primary->fb->base.id;
2008 crtc_resp->fb_id = 0;
2010 if (crtc->enabled) {
2012 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
2013 crtc_resp->mode_valid = 1;
2016 crtc_resp->mode_valid = 0;
2018 drm_modeset_unlock_crtc(crtc);
2023 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
2024 const struct drm_file *file_priv)
2027 * If user-space hasn't configured the driver to expose the stereo 3D
2028 * modes, don't expose them.
2030 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2036 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2038 /* For atomic drivers only state objects are synchronously updated and
2039 * protected by modeset locks, so check those first. */
2040 if (connector->state)
2041 return connector->state->best_encoder;
2042 return connector->encoder;
2045 /* helper for getconnector and getproperties ioctls */
2046 static int get_properties(struct drm_mode_object *obj, bool atomic,
2047 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2048 uint32_t *arg_count_props)
2053 props_count = obj->properties->count;
2055 props_count -= obj->properties->atomic_count;
2057 if ((*arg_count_props >= props_count) && props_count) {
2058 for (i = 0, copied = 0; copied < props_count; i++) {
2059 struct drm_property *prop = obj->properties->properties[i];
2062 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2065 ret = drm_object_property_get_value(obj, prop, &val);
2069 if (put_user(prop->base.id, prop_ptr + copied))
2072 if (put_user(val, prop_values + copied))
2078 *arg_count_props = props_count;
2084 * drm_mode_getconnector - get connector configuration
2085 * @dev: drm device for the ioctl
2086 * @data: data pointer for the ioctl
2087 * @file_priv: drm file for the ioctl call
2089 * Construct a connector configuration structure to return to the user.
2091 * Called by the user via ioctl.
2094 * Zero on success, negative errno on failure.
2096 int drm_mode_getconnector(struct drm_device *dev, void *data,
2097 struct drm_file *file_priv)
2099 struct drm_mode_get_connector *out_resp = data;
2100 struct drm_connector *connector;
2101 struct drm_encoder *encoder;
2102 struct drm_display_mode *mode;
2104 int encoders_count = 0;
2108 struct drm_mode_modeinfo u_mode;
2109 struct drm_mode_modeinfo __user *mode_ptr;
2110 uint32_t __user *encoder_ptr;
2112 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2115 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2117 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2119 mutex_lock(&dev->mode_config.mutex);
2121 connector = drm_connector_find(dev, out_resp->connector_id);
2127 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2128 if (connector->encoder_ids[i] != 0)
2131 if (out_resp->count_modes == 0) {
2132 connector->funcs->fill_modes(connector,
2133 dev->mode_config.max_width,
2134 dev->mode_config.max_height);
2137 /* delayed so we get modes regardless of pre-fill_modes state */
2138 list_for_each_entry(mode, &connector->modes, head)
2139 if (drm_mode_expose_to_userspace(mode, file_priv))
2142 out_resp->connector_id = connector->base.id;
2143 out_resp->connector_type = connector->connector_type;
2144 out_resp->connector_type_id = connector->connector_type_id;
2145 out_resp->mm_width = connector->display_info.width_mm;
2146 out_resp->mm_height = connector->display_info.height_mm;
2147 out_resp->subpixel = connector->display_info.subpixel_order;
2148 out_resp->connection = connector->status;
2150 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2151 encoder = drm_connector_get_encoder(connector);
2153 out_resp->encoder_id = encoder->base.id;
2155 out_resp->encoder_id = 0;
2158 * This ioctl is called twice, once to determine how much space is
2159 * needed, and the 2nd time to fill it.
2161 if ((out_resp->count_modes >= mode_count) && mode_count) {
2163 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2164 list_for_each_entry(mode, &connector->modes, head) {
2165 if (!drm_mode_expose_to_userspace(mode, file_priv))
2168 drm_crtc_convert_to_umode(&u_mode, mode);
2169 if (copy_to_user(mode_ptr + copied,
2170 &u_mode, sizeof(u_mode))) {
2177 out_resp->count_modes = mode_count;
2179 ret = get_properties(&connector->base, file_priv->atomic,
2180 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2181 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2182 &out_resp->count_props);
2186 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2188 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2189 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2190 if (connector->encoder_ids[i] != 0) {
2191 if (put_user(connector->encoder_ids[i],
2192 encoder_ptr + copied)) {
2200 out_resp->count_encoders = encoders_count;
2203 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2206 mutex_unlock(&dev->mode_config.mutex);
2211 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2213 struct drm_connector *connector;
2214 struct drm_device *dev = encoder->dev;
2215 bool uses_atomic = false;
2217 /* For atomic drivers only state objects are synchronously updated and
2218 * protected by modeset locks, so check those first. */
2219 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2220 if (!connector->state)
2225 if (connector->state->best_encoder != encoder)
2228 return connector->state->crtc;
2231 /* Don't return stale data (e.g. pending async disable). */
2235 return encoder->crtc;
2239 * drm_mode_getencoder - get encoder configuration
2240 * @dev: drm device for the ioctl
2241 * @data: data pointer for the ioctl
2242 * @file_priv: drm file for the ioctl call
2244 * Construct a encoder configuration structure to return to the user.
2246 * Called by the user via ioctl.
2249 * Zero on success, negative errno on failure.
2251 int drm_mode_getencoder(struct drm_device *dev, void *data,
2252 struct drm_file *file_priv)
2254 struct drm_mode_get_encoder *enc_resp = data;
2255 struct drm_encoder *encoder;
2256 struct drm_crtc *crtc;
2258 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2261 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2265 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2266 crtc = drm_encoder_get_crtc(encoder);
2268 enc_resp->crtc_id = crtc->base.id;
2269 else if (encoder->crtc)
2270 enc_resp->crtc_id = encoder->crtc->base.id;
2272 enc_resp->crtc_id = 0;
2273 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2275 enc_resp->encoder_type = encoder->encoder_type;
2276 enc_resp->encoder_id = encoder->base.id;
2277 enc_resp->possible_crtcs = encoder->possible_crtcs;
2278 enc_resp->possible_clones = encoder->possible_clones;
2284 * drm_mode_getplane_res - enumerate all plane resources
2287 * @file_priv: DRM file info
2289 * Construct a list of plane ids to return to the user.
2291 * Called by the user via ioctl.
2294 * Zero on success, negative errno on failure.
2296 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2297 struct drm_file *file_priv)
2299 struct drm_mode_get_plane_res *plane_resp = data;
2300 struct drm_mode_config *config;
2301 struct drm_plane *plane;
2302 uint32_t __user *plane_ptr;
2304 unsigned num_planes;
2306 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2309 config = &dev->mode_config;
2311 if (file_priv->universal_planes)
2312 num_planes = config->num_total_plane;
2314 num_planes = config->num_overlay_plane;
2317 * This ioctl is called twice, once to determine how much space is
2318 * needed, and the 2nd time to fill it.
2321 (plane_resp->count_planes >= num_planes)) {
2322 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2324 /* Plane lists are invariant, no locking needed. */
2325 list_for_each_entry(plane, &config->plane_list, head) {
2327 * Unless userspace set the 'universal planes'
2328 * capability bit, only advertise overlays.
2330 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2331 !file_priv->universal_planes)
2334 if (put_user(plane->base.id, plane_ptr + copied))
2339 plane_resp->count_planes = num_planes;
2345 * drm_mode_getplane - get plane configuration
2348 * @file_priv: DRM file info
2350 * Construct a plane configuration structure to return to the user.
2352 * Called by the user via ioctl.
2355 * Zero on success, negative errno on failure.
2357 int drm_mode_getplane(struct drm_device *dev, void *data,
2358 struct drm_file *file_priv)
2360 struct drm_mode_get_plane *plane_resp = data;
2361 struct drm_plane *plane;
2362 uint32_t __user *format_ptr;
2364 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2367 plane = drm_plane_find(dev, plane_resp->plane_id);
2371 drm_modeset_lock(&plane->mutex, NULL);
2373 plane_resp->crtc_id = plane->crtc->base.id;
2375 plane_resp->crtc_id = 0;
2378 plane_resp->fb_id = plane->fb->base.id;
2380 plane_resp->fb_id = 0;
2381 drm_modeset_unlock(&plane->mutex);
2383 plane_resp->plane_id = plane->base.id;
2384 plane_resp->possible_crtcs = plane->possible_crtcs;
2385 plane_resp->gamma_size = 0;
2388 * This ioctl is called twice, once to determine how much space is
2389 * needed, and the 2nd time to fill it.
2391 if (plane->format_count &&
2392 (plane_resp->count_format_types >= plane->format_count)) {
2393 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2394 if (copy_to_user(format_ptr,
2395 plane->format_types,
2396 sizeof(uint32_t) * plane->format_count)) {
2400 plane_resp->count_format_types = plane->format_count;
2406 * setplane_internal - setplane handler for internal callers
2408 * Note that we assume an extra reference has already been taken on fb. If the
2409 * update fails, this reference will be dropped before return; if it succeeds,
2410 * the previous framebuffer (if any) will be unreferenced instead.
2412 * src_{x,y,w,h} are provided in 16.16 fixed point format
2414 static int __setplane_internal(struct drm_plane *plane,
2415 struct drm_crtc *crtc,
2416 struct drm_framebuffer *fb,
2417 int32_t crtc_x, int32_t crtc_y,
2418 uint32_t crtc_w, uint32_t crtc_h,
2419 /* src_{x,y,w,h} values are 16.16 fixed point */
2420 uint32_t src_x, uint32_t src_y,
2421 uint32_t src_w, uint32_t src_h)
2424 unsigned int fb_width, fb_height;
2427 /* No fb means shut it down */
2429 plane->old_fb = plane->fb;
2430 ret = plane->funcs->disable_plane(plane);
2435 plane->old_fb = NULL;
2440 /* Check whether this plane is usable on this CRTC */
2441 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2442 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2447 /* Check whether this plane supports the fb pixel format. */
2448 for (i = 0; i < plane->format_count; i++)
2449 if (fb->pixel_format == plane->format_types[i])
2451 if (i == plane->format_count) {
2452 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2453 drm_get_format_name(fb->pixel_format));
2458 fb_width = fb->width << 16;
2459 fb_height = fb->height << 16;
2461 /* Make sure source coordinates are inside the fb. */
2462 if (src_w > fb_width ||
2463 src_x > fb_width - src_w ||
2464 src_h > fb_height ||
2465 src_y > fb_height - src_h) {
2466 DRM_DEBUG_KMS("Invalid source coordinates "
2467 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2468 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2469 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2470 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2471 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2476 plane->old_fb = plane->fb;
2477 ret = plane->funcs->update_plane(plane, crtc, fb,
2478 crtc_x, crtc_y, crtc_w, crtc_h,
2479 src_x, src_y, src_w, src_h);
2485 plane->old_fb = NULL;
2490 drm_framebuffer_unreference(fb);
2492 drm_framebuffer_unreference(plane->old_fb);
2493 plane->old_fb = NULL;
2498 static int setplane_internal(struct drm_plane *plane,
2499 struct drm_crtc *crtc,
2500 struct drm_framebuffer *fb,
2501 int32_t crtc_x, int32_t crtc_y,
2502 uint32_t crtc_w, uint32_t crtc_h,
2503 /* src_{x,y,w,h} values are 16.16 fixed point */
2504 uint32_t src_x, uint32_t src_y,
2505 uint32_t src_w, uint32_t src_h)
2509 drm_modeset_lock_all(plane->dev);
2510 ret = __setplane_internal(plane, crtc, fb,
2511 crtc_x, crtc_y, crtc_w, crtc_h,
2512 src_x, src_y, src_w, src_h);
2513 drm_modeset_unlock_all(plane->dev);
2519 * drm_mode_setplane - configure a plane's configuration
2521 * @data: ioctl data*
2522 * @file_priv: DRM file info
2524 * Set plane configuration, including placement, fb, scaling, and other factors.
2525 * Or pass a NULL fb to disable (planes may be disabled without providing a
2529 * Zero on success, negative errno on failure.
2531 int drm_mode_setplane(struct drm_device *dev, void *data,
2532 struct drm_file *file_priv)
2534 struct drm_mode_set_plane *plane_req = data;
2535 struct drm_plane *plane;
2536 struct drm_crtc *crtc = NULL;
2537 struct drm_framebuffer *fb = NULL;
2539 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2542 /* Give drivers some help against integer overflows */
2543 if (plane_req->crtc_w > INT_MAX ||
2544 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2545 plane_req->crtc_h > INT_MAX ||
2546 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2547 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2548 plane_req->crtc_w, plane_req->crtc_h,
2549 plane_req->crtc_x, plane_req->crtc_y);
2554 * First, find the plane, crtc, and fb objects. If not available,
2555 * we don't bother to call the driver.
2557 plane = drm_plane_find(dev, plane_req->plane_id);
2559 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2560 plane_req->plane_id);
2564 if (plane_req->fb_id) {
2565 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2567 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2572 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2574 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2575 plane_req->crtc_id);
2581 * setplane_internal will take care of deref'ing either the old or new
2582 * framebuffer depending on success.
2584 return setplane_internal(plane, crtc, fb,
2585 plane_req->crtc_x, plane_req->crtc_y,
2586 plane_req->crtc_w, plane_req->crtc_h,
2587 plane_req->src_x, plane_req->src_y,
2588 plane_req->src_w, plane_req->src_h);
2592 * drm_mode_set_config_internal - helper to call ->set_config
2593 * @set: modeset config to set
2595 * This is a little helper to wrap internal calls to the ->set_config driver
2596 * interface. The only thing it adds is correct refcounting dance.
2599 * Zero on success, negative errno on failure.
2601 int drm_mode_set_config_internal(struct drm_mode_set *set)
2603 struct drm_crtc *crtc = set->crtc;
2604 struct drm_framebuffer *fb;
2605 struct drm_crtc *tmp;
2609 * NOTE: ->set_config can also disable other crtcs (if we steal all
2610 * connectors from it), hence we need to refcount the fbs across all
2611 * crtcs. Atomic modeset will have saner semantics ...
2613 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2614 tmp->primary->old_fb = tmp->primary->fb;
2618 ret = crtc->funcs->set_config(set);
2620 crtc->primary->crtc = crtc;
2621 crtc->primary->fb = fb;
2624 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2625 if (tmp->primary->fb)
2626 drm_framebuffer_reference(tmp->primary->fb);
2627 if (tmp->primary->old_fb)
2628 drm_framebuffer_unreference(tmp->primary->old_fb);
2629 tmp->primary->old_fb = NULL;
2634 EXPORT_SYMBOL(drm_mode_set_config_internal);
2637 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2638 * @mode: mode to query
2639 * @hdisplay: hdisplay value to fill in
2640 * @vdisplay: vdisplay value to fill in
2642 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2643 * the appropriate layout.
2645 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2646 int *hdisplay, int *vdisplay)
2648 struct drm_display_mode adjusted;
2650 drm_mode_copy(&adjusted, mode);
2651 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2652 *hdisplay = adjusted.crtc_hdisplay;
2653 *vdisplay = adjusted.crtc_vdisplay;
2655 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2658 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2660 * @crtc: CRTC that framebuffer will be displayed on
2663 * @mode: mode that framebuffer will be displayed under
2664 * @fb: framebuffer to check size of
2666 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2668 const struct drm_display_mode *mode,
2669 const struct drm_framebuffer *fb)
2672 int hdisplay, vdisplay;
2674 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2676 if (crtc->invert_dimensions)
2677 swap(hdisplay, vdisplay);
2679 if (hdisplay > fb->width ||
2680 vdisplay > fb->height ||
2681 x > fb->width - hdisplay ||
2682 y > fb->height - vdisplay) {
2683 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2684 fb->width, fb->height, hdisplay, vdisplay, x, y,
2685 crtc->invert_dimensions ? " (inverted)" : "");
2691 EXPORT_SYMBOL(drm_crtc_check_viewport);
2694 * drm_mode_setcrtc - set CRTC configuration
2695 * @dev: drm device for the ioctl
2696 * @data: data pointer for the ioctl
2697 * @file_priv: drm file for the ioctl call
2699 * Build a new CRTC configuration based on user request.
2701 * Called by the user via ioctl.
2704 * Zero on success, negative errno on failure.
2706 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2707 struct drm_file *file_priv)
2709 struct drm_mode_config *config = &dev->mode_config;
2710 struct drm_mode_crtc *crtc_req = data;
2711 struct drm_crtc *crtc;
2712 struct drm_connector **connector_set = NULL, *connector;
2713 struct drm_framebuffer *fb = NULL;
2714 struct drm_display_mode *mode = NULL;
2715 struct drm_mode_set set;
2716 uint32_t __user *set_connectors_ptr;
2720 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2723 /* For some reason crtc x/y offsets are signed internally. */
2724 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2727 drm_modeset_lock_all(dev);
2728 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2730 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2734 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2736 if (crtc_req->mode_valid) {
2737 /* If we have a mode we need a framebuffer. */
2738 /* If we pass -1, set the mode with the currently bound fb */
2739 if (crtc_req->fb_id == -1) {
2740 if (!crtc->primary->fb) {
2741 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2745 fb = crtc->primary->fb;
2746 /* Make refcounting symmetric with the lookup path. */
2747 drm_framebuffer_reference(fb);
2749 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2751 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2758 mode = drm_mode_create(dev);
2764 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2766 DRM_DEBUG_KMS("Invalid mode\n");
2770 mode->status = drm_mode_validate_basic(mode);
2771 if (mode->status != MODE_OK) {
2776 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2778 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2785 if (crtc_req->count_connectors == 0 && mode) {
2786 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2791 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2792 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2793 crtc_req->count_connectors);
2798 if (crtc_req->count_connectors > 0) {
2801 /* Avoid unbounded kernel memory allocation */
2802 if (crtc_req->count_connectors > config->num_connector) {
2807 connector_set = kmalloc_array(crtc_req->count_connectors,
2808 sizeof(struct drm_connector *),
2810 if (!connector_set) {
2815 for (i = 0; i < crtc_req->count_connectors; i++) {
2816 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2817 if (get_user(out_id, &set_connectors_ptr[i])) {
2822 connector = drm_connector_find(dev, out_id);
2824 DRM_DEBUG_KMS("Connector id %d unknown\n",
2829 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2833 connector_set[i] = connector;
2838 set.x = crtc_req->x;
2839 set.y = crtc_req->y;
2841 set.connectors = connector_set;
2842 set.num_connectors = crtc_req->count_connectors;
2844 ret = drm_mode_set_config_internal(&set);
2848 drm_framebuffer_unreference(fb);
2850 kfree(connector_set);
2851 drm_mode_destroy(dev, mode);
2852 drm_modeset_unlock_all(dev);
2857 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2858 * universal plane handler call
2859 * @crtc: crtc to update cursor for
2860 * @req: data pointer for the ioctl
2861 * @file_priv: drm file for the ioctl call
2863 * Legacy cursor ioctl's work directly with driver buffer handles. To
2864 * translate legacy ioctl calls into universal plane handler calls, we need to
2865 * wrap the native buffer handle in a drm_framebuffer.
2867 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2868 * buffer with a pitch of 4*width; the universal plane interface should be used
2869 * directly in cases where the hardware can support other buffer settings and
2870 * userspace wants to make use of these capabilities.
2873 * Zero on success, negative errno on failure.
2875 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2876 struct drm_mode_cursor2 *req,
2877 struct drm_file *file_priv)
2879 struct drm_device *dev = crtc->dev;
2880 struct drm_framebuffer *fb = NULL;
2881 struct drm_mode_fb_cmd2 fbreq = {
2882 .width = req->width,
2883 .height = req->height,
2884 .pixel_format = DRM_FORMAT_ARGB8888,
2885 .pitches = { req->width * 4 },
2886 .handles = { req->handle },
2888 int32_t crtc_x, crtc_y;
2889 uint32_t crtc_w = 0, crtc_h = 0;
2890 uint32_t src_w = 0, src_h = 0;
2893 BUG_ON(!crtc->cursor);
2894 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2897 * Obtain fb we'll be using (either new or existing) and take an extra
2898 * reference to it if fb != null. setplane will take care of dropping
2899 * the reference if the plane update fails.
2901 if (req->flags & DRM_MODE_CURSOR_BO) {
2903 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
2905 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2912 fb = crtc->cursor->fb;
2914 drm_framebuffer_reference(fb);
2917 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2921 crtc_x = crtc->cursor_x;
2922 crtc_y = crtc->cursor_y;
2927 crtc_h = fb->height;
2928 src_w = fb->width << 16;
2929 src_h = fb->height << 16;
2933 * setplane_internal will take care of deref'ing either the old or new
2934 * framebuffer depending on success.
2936 ret = __setplane_internal(crtc->cursor, crtc, fb,
2937 crtc_x, crtc_y, crtc_w, crtc_h,
2938 0, 0, src_w, src_h);
2940 /* Update successful; save new cursor position, if necessary */
2941 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2942 crtc->cursor_x = req->x;
2943 crtc->cursor_y = req->y;
2949 static int drm_mode_cursor_common(struct drm_device *dev,
2950 struct drm_mode_cursor2 *req,
2951 struct drm_file *file_priv)
2953 struct drm_crtc *crtc;
2956 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2959 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2962 crtc = drm_crtc_find(dev, req->crtc_id);
2964 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2969 * If this crtc has a universal cursor plane, call that plane's update
2970 * handler rather than using legacy cursor handlers.
2972 drm_modeset_lock_crtc(crtc, crtc->cursor);
2974 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2978 if (req->flags & DRM_MODE_CURSOR_BO) {
2979 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2983 /* Turns off the cursor if handle is 0 */
2984 if (crtc->funcs->cursor_set2)
2985 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2986 req->width, req->height, req->hot_x, req->hot_y);
2988 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2989 req->width, req->height);
2992 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2993 if (crtc->funcs->cursor_move) {
2994 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3001 drm_modeset_unlock_crtc(crtc);
3009 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3010 * @dev: drm device for the ioctl
3011 * @data: data pointer for the ioctl
3012 * @file_priv: drm file for the ioctl call
3014 * Set the cursor configuration based on user request.
3016 * Called by the user via ioctl.
3019 * Zero on success, negative errno on failure.
3021 int drm_mode_cursor_ioctl(struct drm_device *dev,
3022 void *data, struct drm_file *file_priv)
3024 struct drm_mode_cursor *req = data;
3025 struct drm_mode_cursor2 new_req;
3027 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3028 new_req.hot_x = new_req.hot_y = 0;
3030 return drm_mode_cursor_common(dev, &new_req, file_priv);
3034 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3035 * @dev: drm device for the ioctl
3036 * @data: data pointer for the ioctl
3037 * @file_priv: drm file for the ioctl call
3039 * Set the cursor configuration based on user request. This implements the 2nd
3040 * version of the cursor ioctl, which allows userspace to additionally specify
3041 * the hotspot of the pointer.
3043 * Called by the user via ioctl.
3046 * Zero on success, negative errno on failure.
3048 int drm_mode_cursor2_ioctl(struct drm_device *dev,
3049 void *data, struct drm_file *file_priv)
3051 struct drm_mode_cursor2 *req = data;
3053 return drm_mode_cursor_common(dev, req, file_priv);
3057 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3058 * @bpp: bits per pixels
3059 * @depth: bit depth per pixel
3061 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3062 * Useful in fbdev emulation code, since that deals in those values.
3064 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3070 fmt = DRM_FORMAT_C8;
3074 fmt = DRM_FORMAT_XRGB1555;
3076 fmt = DRM_FORMAT_RGB565;
3079 fmt = DRM_FORMAT_RGB888;
3083 fmt = DRM_FORMAT_XRGB8888;
3084 else if (depth == 30)
3085 fmt = DRM_FORMAT_XRGB2101010;
3087 fmt = DRM_FORMAT_ARGB8888;
3090 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3091 fmt = DRM_FORMAT_XRGB8888;
3097 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3100 * drm_mode_addfb - add an FB to the graphics configuration
3101 * @dev: drm device for the ioctl
3102 * @data: data pointer for the ioctl
3103 * @file_priv: drm file for the ioctl call
3105 * Add a new FB to the specified CRTC, given a user request. This is the
3106 * original addfb ioctl which only supported RGB formats.
3108 * Called by the user via ioctl.
3111 * Zero on success, negative errno on failure.
3113 int drm_mode_addfb(struct drm_device *dev,
3114 void *data, struct drm_file *file_priv)
3116 struct drm_mode_fb_cmd *or = data;
3117 struct drm_mode_fb_cmd2 r = {};
3120 /* convert to new format and call new ioctl */
3121 r.fb_id = or->fb_id;
3122 r.width = or->width;
3123 r.height = or->height;
3124 r.pitches[0] = or->pitch;
3125 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3126 r.handles[0] = or->handle;
3128 ret = drm_mode_addfb2(dev, &r, file_priv);
3132 or->fb_id = r.fb_id;
3137 static int format_check(const struct drm_mode_fb_cmd2 *r)
3139 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3143 case DRM_FORMAT_RGB332:
3144 case DRM_FORMAT_BGR233:
3145 case DRM_FORMAT_XRGB4444:
3146 case DRM_FORMAT_XBGR4444:
3147 case DRM_FORMAT_RGBX4444:
3148 case DRM_FORMAT_BGRX4444:
3149 case DRM_FORMAT_ARGB4444:
3150 case DRM_FORMAT_ABGR4444:
3151 case DRM_FORMAT_RGBA4444:
3152 case DRM_FORMAT_BGRA4444:
3153 case DRM_FORMAT_XRGB1555:
3154 case DRM_FORMAT_XBGR1555:
3155 case DRM_FORMAT_RGBX5551:
3156 case DRM_FORMAT_BGRX5551:
3157 case DRM_FORMAT_ARGB1555:
3158 case DRM_FORMAT_ABGR1555:
3159 case DRM_FORMAT_RGBA5551:
3160 case DRM_FORMAT_BGRA5551:
3161 case DRM_FORMAT_RGB565:
3162 case DRM_FORMAT_BGR565:
3163 case DRM_FORMAT_RGB888:
3164 case DRM_FORMAT_BGR888:
3165 case DRM_FORMAT_XRGB8888:
3166 case DRM_FORMAT_XBGR8888:
3167 case DRM_FORMAT_RGBX8888:
3168 case DRM_FORMAT_BGRX8888:
3169 case DRM_FORMAT_ARGB8888:
3170 case DRM_FORMAT_ABGR8888:
3171 case DRM_FORMAT_RGBA8888:
3172 case DRM_FORMAT_BGRA8888:
3173 case DRM_FORMAT_XRGB2101010:
3174 case DRM_FORMAT_XBGR2101010:
3175 case DRM_FORMAT_RGBX1010102:
3176 case DRM_FORMAT_BGRX1010102:
3177 case DRM_FORMAT_ARGB2101010:
3178 case DRM_FORMAT_ABGR2101010:
3179 case DRM_FORMAT_RGBA1010102:
3180 case DRM_FORMAT_BGRA1010102:
3181 case DRM_FORMAT_YUYV:
3182 case DRM_FORMAT_YVYU:
3183 case DRM_FORMAT_UYVY:
3184 case DRM_FORMAT_VYUY:
3185 case DRM_FORMAT_AYUV:
3186 case DRM_FORMAT_NV12:
3187 case DRM_FORMAT_NV21:
3188 case DRM_FORMAT_NV16:
3189 case DRM_FORMAT_NV61:
3190 case DRM_FORMAT_NV24:
3191 case DRM_FORMAT_NV42:
3192 case DRM_FORMAT_YUV410:
3193 case DRM_FORMAT_YVU410:
3194 case DRM_FORMAT_YUV411:
3195 case DRM_FORMAT_YVU411:
3196 case DRM_FORMAT_YUV420:
3197 case DRM_FORMAT_YVU420:
3198 case DRM_FORMAT_YUV422:
3199 case DRM_FORMAT_YVU422:
3200 case DRM_FORMAT_YUV444:
3201 case DRM_FORMAT_YVU444:
3204 DRM_DEBUG_KMS("invalid pixel format %s\n",
3205 drm_get_format_name(r->pixel_format));
3210 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3212 int ret, hsub, vsub, num_planes, i;
3214 ret = format_check(r);
3216 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3217 drm_get_format_name(r->pixel_format));
3221 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3222 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3223 num_planes = drm_format_num_planes(r->pixel_format);
3225 if (r->width == 0 || r->width % hsub) {
3226 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3230 if (r->height == 0 || r->height % vsub) {
3231 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3235 for (i = 0; i < num_planes; i++) {
3236 unsigned int width = r->width / (i != 0 ? hsub : 1);
3237 unsigned int height = r->height / (i != 0 ? vsub : 1);
3238 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3240 if (!r->handles[i]) {
3241 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3245 if ((uint64_t) width * cpp > UINT_MAX)
3248 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3251 if (r->pitches[i] < width * cpp) {
3252 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3260 static struct drm_framebuffer *
3261 internal_framebuffer_create(struct drm_device *dev,
3262 struct drm_mode_fb_cmd2 *r,
3263 struct drm_file *file_priv)
3265 struct drm_mode_config *config = &dev->mode_config;
3266 struct drm_framebuffer *fb;
3269 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3270 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3271 return ERR_PTR(-EINVAL);
3274 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3275 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3276 r->width, config->min_width, config->max_width);
3277 return ERR_PTR(-EINVAL);
3279 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3280 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3281 r->height, config->min_height, config->max_height);
3282 return ERR_PTR(-EINVAL);
3285 ret = framebuffer_check(r);
3287 return ERR_PTR(ret);
3289 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3291 DRM_DEBUG_KMS("could not create framebuffer\n");
3299 * drm_mode_addfb2 - add an FB to the graphics configuration
3300 * @dev: drm device for the ioctl
3301 * @data: data pointer for the ioctl
3302 * @file_priv: drm file for the ioctl call
3304 * Add a new FB to the specified CRTC, given a user request with format. This is
3305 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3306 * and uses fourcc codes as pixel format specifiers.
3308 * Called by the user via ioctl.
3311 * Zero on success, negative errno on failure.
3313 int drm_mode_addfb2(struct drm_device *dev,
3314 void *data, struct drm_file *file_priv)
3316 struct drm_mode_fb_cmd2 *r = data;
3317 struct drm_framebuffer *fb;
3319 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3322 fb = internal_framebuffer_create(dev, r, file_priv);
3326 /* Transfer ownership to the filp for reaping on close */
3328 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3329 mutex_lock(&file_priv->fbs_lock);
3330 r->fb_id = fb->base.id;
3331 list_add(&fb->filp_head, &file_priv->fbs);
3332 mutex_unlock(&file_priv->fbs_lock);
3338 * drm_mode_rmfb - remove an FB from the configuration
3339 * @dev: drm device for the ioctl
3340 * @data: data pointer for the ioctl
3341 * @file_priv: drm file for the ioctl call
3343 * Remove the FB specified by the user.
3345 * Called by the user via ioctl.
3348 * Zero on success, negative errno on failure.
3350 int drm_mode_rmfb(struct drm_device *dev,
3351 void *data, struct drm_file *file_priv)
3353 struct drm_framebuffer *fb = NULL;
3354 struct drm_framebuffer *fbl = NULL;
3355 uint32_t *id = data;
3358 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3361 mutex_lock(&file_priv->fbs_lock);
3362 mutex_lock(&dev->mode_config.fb_lock);
3363 fb = __drm_framebuffer_lookup(dev, *id);
3367 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3373 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3374 __drm_framebuffer_unregister(dev, fb);
3376 list_del_init(&fb->filp_head);
3377 mutex_unlock(&dev->mode_config.fb_lock);
3378 mutex_unlock(&file_priv->fbs_lock);
3380 drm_framebuffer_remove(fb);
3385 mutex_unlock(&dev->mode_config.fb_lock);
3386 mutex_unlock(&file_priv->fbs_lock);
3392 * drm_mode_getfb - get FB info
3393 * @dev: drm device for the ioctl
3394 * @data: data pointer for the ioctl
3395 * @file_priv: drm file for the ioctl call
3397 * Lookup the FB given its ID and return info about it.
3399 * Called by the user via ioctl.
3402 * Zero on success, negative errno on failure.
3404 int drm_mode_getfb(struct drm_device *dev,
3405 void *data, struct drm_file *file_priv)
3407 struct drm_mode_fb_cmd *r = data;
3408 struct drm_framebuffer *fb;
3411 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3414 fb = drm_framebuffer_lookup(dev, r->fb_id);
3418 r->height = fb->height;
3419 r->width = fb->width;
3420 r->depth = fb->depth;
3421 r->bpp = fb->bits_per_pixel;
3422 r->pitch = fb->pitches[0];
3423 if (fb->funcs->create_handle) {
3424 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3425 drm_is_control_client(file_priv)) {
3426 ret = fb->funcs->create_handle(fb, file_priv,
3429 /* GET_FB() is an unprivileged ioctl so we must not
3430 * return a buffer-handle to non-master processes! For
3431 * backwards-compatibility reasons, we cannot make
3432 * GET_FB() privileged, so just return an invalid handle
3433 * for non-masters. */
3441 drm_framebuffer_unreference(fb);
3447 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3448 * @dev: drm device for the ioctl
3449 * @data: data pointer for the ioctl
3450 * @file_priv: drm file for the ioctl call
3452 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3453 * rectangle list. Generic userspace which does frontbuffer rendering must call
3454 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3455 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3457 * Modesetting drivers which always update the frontbuffer do not need to
3458 * implement the corresponding ->dirty framebuffer callback.
3460 * Called by the user via ioctl.
3463 * Zero on success, negative errno on failure.
3465 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3466 void *data, struct drm_file *file_priv)
3468 struct drm_clip_rect __user *clips_ptr;
3469 struct drm_clip_rect *clips = NULL;
3470 struct drm_mode_fb_dirty_cmd *r = data;
3471 struct drm_framebuffer *fb;
3476 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3479 fb = drm_framebuffer_lookup(dev, r->fb_id);
3483 num_clips = r->num_clips;
3484 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3486 if (!num_clips != !clips_ptr) {
3491 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3493 /* If userspace annotates copy, clips must come in pairs */
3494 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3499 if (num_clips && clips_ptr) {
3500 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3504 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3510 ret = copy_from_user(clips, clips_ptr,
3511 num_clips * sizeof(*clips));
3518 if (fb->funcs->dirty) {
3519 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3528 drm_framebuffer_unreference(fb);
3535 * drm_fb_release - remove and free the FBs on this file
3536 * @priv: drm file for the ioctl
3538 * Destroy all the FBs associated with @filp.
3540 * Called by the user via ioctl.
3543 * Zero on success, negative errno on failure.
3545 void drm_fb_release(struct drm_file *priv)
3547 struct drm_device *dev = priv->minor->dev;
3548 struct drm_framebuffer *fb, *tfb;
3551 * When the file gets released that means no one else can access the fb
3552 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3553 * avoid upsetting lockdep since the universal cursor code adds a
3554 * framebuffer while holding mutex locks.
3556 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3557 * locks is impossible here since no one else but this function can get
3560 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3562 mutex_lock(&dev->mode_config.fb_lock);
3563 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3564 __drm_framebuffer_unregister(dev, fb);
3565 mutex_unlock(&dev->mode_config.fb_lock);
3567 list_del_init(&fb->filp_head);
3569 /* This will also drop the fpriv->fbs reference. */
3570 drm_framebuffer_remove(fb);
3575 * drm_property_create - create a new property type
3577 * @flags: flags specifying the property type
3578 * @name: name of the property
3579 * @num_values: number of pre-defined values
3581 * This creates a new generic drm property which can then be attached to a drm
3582 * object with drm_object_attach_property. The returned property object must be
3583 * freed with drm_property_destroy.
3585 * Note that the DRM core keeps a per-device list of properties and that, if
3586 * drm_mode_config_cleanup() is called, it will destroy all properties created
3590 * A pointer to the newly created property on success, NULL on failure.
3592 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3593 const char *name, int num_values)
3595 struct drm_property *property = NULL;
3598 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3602 property->dev = dev;
3605 property->values = kcalloc(num_values, sizeof(uint64_t),
3607 if (!property->values)
3611 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3615 property->flags = flags;
3616 property->num_values = num_values;
3617 INIT_LIST_HEAD(&property->enum_list);
3620 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3621 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3624 list_add_tail(&property->head, &dev->mode_config.property_list);
3626 WARN_ON(!drm_property_type_valid(property));
3630 kfree(property->values);
3634 EXPORT_SYMBOL(drm_property_create);
3637 * drm_property_create_enum - create a new enumeration property type
3639 * @flags: flags specifying the property type
3640 * @name: name of the property
3641 * @props: enumeration lists with property values
3642 * @num_values: number of pre-defined values
3644 * This creates a new generic drm property which can then be attached to a drm
3645 * object with drm_object_attach_property. The returned property object must be
3646 * freed with drm_property_destroy.
3648 * Userspace is only allowed to set one of the predefined values for enumeration
3652 * A pointer to the newly created property on success, NULL on failure.
3654 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3656 const struct drm_prop_enum_list *props,
3659 struct drm_property *property;
3662 flags |= DRM_MODE_PROP_ENUM;
3664 property = drm_property_create(dev, flags, name, num_values);
3668 for (i = 0; i < num_values; i++) {
3669 ret = drm_property_add_enum(property, i,
3673 drm_property_destroy(dev, property);
3680 EXPORT_SYMBOL(drm_property_create_enum);
3683 * drm_property_create_bitmask - create a new bitmask property type
3685 * @flags: flags specifying the property type
3686 * @name: name of the property
3687 * @props: enumeration lists with property bitflags
3688 * @num_props: size of the @props array
3689 * @supported_bits: bitmask of all supported enumeration values
3691 * This creates a new bitmask drm property which can then be attached to a drm
3692 * object with drm_object_attach_property. The returned property object must be
3693 * freed with drm_property_destroy.
3695 * Compared to plain enumeration properties userspace is allowed to set any
3696 * or'ed together combination of the predefined property bitflag values
3699 * A pointer to the newly created property on success, NULL on failure.
3701 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3702 int flags, const char *name,
3703 const struct drm_prop_enum_list *props,
3705 uint64_t supported_bits)
3707 struct drm_property *property;
3708 int i, ret, index = 0;
3709 int num_values = hweight64(supported_bits);
3711 flags |= DRM_MODE_PROP_BITMASK;
3713 property = drm_property_create(dev, flags, name, num_values);
3716 for (i = 0; i < num_props; i++) {
3717 if (!(supported_bits & (1ULL << props[i].type)))
3720 if (WARN_ON(index >= num_values)) {
3721 drm_property_destroy(dev, property);
3725 ret = drm_property_add_enum(property, index++,
3729 drm_property_destroy(dev, property);
3736 EXPORT_SYMBOL(drm_property_create_bitmask);
3738 static struct drm_property *property_create_range(struct drm_device *dev,
3739 int flags, const char *name,
3740 uint64_t min, uint64_t max)
3742 struct drm_property *property;
3744 property = drm_property_create(dev, flags, name, 2);
3748 property->values[0] = min;
3749 property->values[1] = max;
3755 * drm_property_create_range - create a new unsigned ranged property type
3757 * @flags: flags specifying the property type
3758 * @name: name of the property
3759 * @min: minimum value of the property
3760 * @max: maximum value of the property
3762 * This creates a new generic drm property which can then be attached to a drm
3763 * object with drm_object_attach_property. The returned property object must be
3764 * freed with drm_property_destroy.
3766 * Userspace is allowed to set any unsigned integer value in the (min, max)
3770 * A pointer to the newly created property on success, NULL on failure.
3772 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3774 uint64_t min, uint64_t max)
3776 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3779 EXPORT_SYMBOL(drm_property_create_range);
3782 * drm_property_create_signed_range - create a new signed ranged property type
3784 * @flags: flags specifying the property type
3785 * @name: name of the property
3786 * @min: minimum value of the property
3787 * @max: maximum value of the property
3789 * This creates a new generic drm property which can then be attached to a drm
3790 * object with drm_object_attach_property. The returned property object must be
3791 * freed with drm_property_destroy.
3793 * Userspace is allowed to set any signed integer value in the (min, max)
3797 * A pointer to the newly created property on success, NULL on failure.
3799 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3800 int flags, const char *name,
3801 int64_t min, int64_t max)
3803 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3804 name, I642U64(min), I642U64(max));
3806 EXPORT_SYMBOL(drm_property_create_signed_range);
3809 * drm_property_create_object - create a new object property type
3811 * @flags: flags specifying the property type
3812 * @name: name of the property
3813 * @type: object type from DRM_MODE_OBJECT_* defines
3815 * This creates a new generic drm property which can then be attached to a drm
3816 * object with drm_object_attach_property. The returned property object must be
3817 * freed with drm_property_destroy.
3819 * Userspace is only allowed to set this to any property value of the given
3820 * @type. Only useful for atomic properties, which is enforced.
3823 * A pointer to the newly created property on success, NULL on failure.
3825 struct drm_property *drm_property_create_object(struct drm_device *dev,
3826 int flags, const char *name, uint32_t type)
3828 struct drm_property *property;
3830 flags |= DRM_MODE_PROP_OBJECT;
3832 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3835 property = drm_property_create(dev, flags, name, 1);
3839 property->values[0] = type;
3843 EXPORT_SYMBOL(drm_property_create_object);
3846 * drm_property_create_bool - create a new boolean property type
3848 * @flags: flags specifying the property type
3849 * @name: name of the property
3851 * This creates a new generic drm property which can then be attached to a drm
3852 * object with drm_object_attach_property. The returned property object must be
3853 * freed with drm_property_destroy.
3855 * This is implemented as a ranged property with only {0, 1} as valid values.
3858 * A pointer to the newly created property on success, NULL on failure.
3860 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3863 return drm_property_create_range(dev, flags, name, 0, 1);
3865 EXPORT_SYMBOL(drm_property_create_bool);
3868 * drm_property_add_enum - add a possible value to an enumeration property
3869 * @property: enumeration property to change
3870 * @index: index of the new enumeration
3871 * @value: value of the new enumeration
3872 * @name: symbolic name of the new enumeration
3874 * This functions adds enumerations to a property.
3876 * It's use is deprecated, drivers should use one of the more specific helpers
3877 * to directly create the property with all enumerations already attached.
3880 * Zero on success, error code on failure.
3882 int drm_property_add_enum(struct drm_property *property, int index,
3883 uint64_t value, const char *name)
3885 struct drm_property_enum *prop_enum;
3887 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3888 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3892 * Bitmask enum properties have the additional constraint of values
3895 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3899 if (!list_empty(&property->enum_list)) {
3900 list_for_each_entry(prop_enum, &property->enum_list, head) {
3901 if (prop_enum->value == value) {
3902 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3903 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3909 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3913 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3914 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3915 prop_enum->value = value;
3917 property->values[index] = value;
3918 list_add_tail(&prop_enum->head, &property->enum_list);
3921 EXPORT_SYMBOL(drm_property_add_enum);
3924 * drm_property_destroy - destroy a drm property
3926 * @property: property to destry
3928 * This function frees a property including any attached resources like
3929 * enumeration values.
3931 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3933 struct drm_property_enum *prop_enum, *pt;
3935 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3936 list_del(&prop_enum->head);
3940 if (property->num_values)
3941 kfree(property->values);
3942 drm_mode_object_put(dev, &property->base);
3943 list_del(&property->head);
3946 EXPORT_SYMBOL(drm_property_destroy);
3949 * drm_object_attach_property - attach a property to a modeset object
3950 * @obj: drm modeset object
3951 * @property: property to attach
3952 * @init_val: initial value of the property
3954 * This attaches the given property to the modeset object with the given initial
3955 * value. Currently this function cannot fail since the properties are stored in
3956 * a statically sized array.
3958 void drm_object_attach_property(struct drm_mode_object *obj,
3959 struct drm_property *property,
3962 int count = obj->properties->count;
3964 if (count == DRM_OBJECT_MAX_PROPERTY) {
3965 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3966 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3967 "you see this message on the same object type.\n",
3972 obj->properties->properties[count] = property;
3973 obj->properties->values[count] = init_val;
3974 obj->properties->count++;
3975 if (property->flags & DRM_MODE_PROP_ATOMIC)
3976 obj->properties->atomic_count++;
3978 EXPORT_SYMBOL(drm_object_attach_property);
3981 * drm_object_property_set_value - set the value of a property
3982 * @obj: drm mode object to set property value for
3983 * @property: property to set
3984 * @val: value the property should be set to
3986 * This functions sets a given property on a given object. This function only
3987 * changes the software state of the property, it does not call into the
3988 * driver's ->set_property callback.
3991 * Zero on success, error code on failure.
3993 int drm_object_property_set_value(struct drm_mode_object *obj,
3994 struct drm_property *property, uint64_t val)
3998 for (i = 0; i < obj->properties->count; i++) {
3999 if (obj->properties->properties[i] == property) {
4000 obj->properties->values[i] = val;
4007 EXPORT_SYMBOL(drm_object_property_set_value);
4010 * drm_object_property_get_value - retrieve the value of a property
4011 * @obj: drm mode object to get property value from
4012 * @property: property to retrieve
4013 * @val: storage for the property value
4015 * This function retrieves the softare state of the given property for the given
4016 * property. Since there is no driver callback to retrieve the current property
4017 * value this might be out of sync with the hardware, depending upon the driver
4021 * Zero on success, error code on failure.
4023 int drm_object_property_get_value(struct drm_mode_object *obj,
4024 struct drm_property *property, uint64_t *val)
4028 /* read-only properties bypass atomic mechanism and still store
4029 * their value in obj->properties->values[].. mostly to avoid
4030 * having to deal w/ EDID and similar props in atomic paths:
4032 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4033 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4034 return drm_atomic_get_property(obj, property, val);
4036 for (i = 0; i < obj->properties->count; i++) {
4037 if (obj->properties->properties[i] == property) {
4038 *val = obj->properties->values[i];
4045 EXPORT_SYMBOL(drm_object_property_get_value);
4048 * drm_mode_getproperty_ioctl - get the property metadata
4051 * @file_priv: DRM file info
4053 * This function retrieves the metadata for a given property, like the different
4054 * possible values for an enum property or the limits for a range property.
4056 * Blob properties are special
4058 * Called by the user via ioctl.
4061 * Zero on success, negative errno on failure.
4063 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4064 void *data, struct drm_file *file_priv)
4066 struct drm_mode_get_property *out_resp = data;
4067 struct drm_property *property;
4069 int value_count = 0;
4072 struct drm_property_enum *prop_enum;
4073 struct drm_mode_property_enum __user *enum_ptr;
4074 uint64_t __user *values_ptr;
4076 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4079 drm_modeset_lock_all(dev);
4080 property = drm_property_find(dev, out_resp->prop_id);
4086 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4087 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4088 list_for_each_entry(prop_enum, &property->enum_list, head)
4092 value_count = property->num_values;
4094 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4095 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4096 out_resp->flags = property->flags;
4098 if ((out_resp->count_values >= value_count) && value_count) {
4099 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4100 for (i = 0; i < value_count; i++) {
4101 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4107 out_resp->count_values = value_count;
4109 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4110 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4111 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4113 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4114 list_for_each_entry(prop_enum, &property->enum_list, head) {
4116 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4121 if (copy_to_user(&enum_ptr[copied].name,
4122 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4129 out_resp->count_enum_blobs = enum_count;
4133 * NOTE: The idea seems to have been to use this to read all the blob
4134 * property values. But nothing ever added them to the corresponding
4135 * list, userspace always used the special-purpose get_blob ioctl to
4136 * read the value for a blob property. It also doesn't make a lot of
4137 * sense to return values here when everything else is just metadata for
4138 * the property itself.
4140 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4141 out_resp->count_enum_blobs = 0;
4143 drm_modeset_unlock_all(dev);
4147 static struct drm_property_blob *
4148 drm_property_create_blob(struct drm_device *dev, size_t length,
4151 struct drm_property_blob *blob;
4154 if (!length || !data)
4157 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4161 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4167 blob->length = length;
4169 memcpy(blob->data, data, length);
4171 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
4175 static void drm_property_destroy_blob(struct drm_device *dev,
4176 struct drm_property_blob *blob)
4178 drm_mode_object_put(dev, &blob->base);
4179 list_del(&blob->head);
4184 * drm_mode_getblob_ioctl - get the contents of a blob property value
4187 * @file_priv: DRM file info
4189 * This function retrieves the contents of a blob property. The value stored in
4190 * an object's blob property is just a normal modeset object id.
4192 * Called by the user via ioctl.
4195 * Zero on success, negative errno on failure.
4197 int drm_mode_getblob_ioctl(struct drm_device *dev,
4198 void *data, struct drm_file *file_priv)
4200 struct drm_mode_get_blob *out_resp = data;
4201 struct drm_property_blob *blob;
4203 void __user *blob_ptr;
4205 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4208 drm_modeset_lock_all(dev);
4209 blob = drm_property_blob_find(dev, out_resp->blob_id);
4215 if (out_resp->length == blob->length) {
4216 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4217 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4222 out_resp->length = blob->length;
4225 drm_modeset_unlock_all(dev);
4230 * drm_mode_connector_set_path_property - set tile property on connector
4231 * @connector: connector to set property on.
4232 * @path: path to use for property.
4234 * This creates a property to expose to userspace to specify a
4235 * connector path. This is mainly used for DisplayPort MST where
4236 * connectors have a topology and we want to allow userspace to give
4237 * them more meaningful names.
4240 * Zero on success, negative errno on failure.
4242 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4245 struct drm_device *dev = connector->dev;
4246 size_t size = strlen(path) + 1;
4249 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4251 if (!connector->path_blob_ptr)
4254 ret = drm_object_property_set_value(&connector->base,
4255 dev->mode_config.path_property,
4256 connector->path_blob_ptr->base.id);
4259 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4262 * drm_mode_connector_set_tile_property - set tile property on connector
4263 * @connector: connector to set property on.
4265 * This looks up the tile information for a connector, and creates a
4266 * property for userspace to parse if it exists. The property is of
4267 * the form of 8 integers using ':' as a separator.
4270 * Zero on success, errno on failure.
4272 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4274 struct drm_device *dev = connector->dev;
4278 if (connector->tile_blob_ptr)
4279 drm_property_destroy_blob(dev, connector->tile_blob_ptr);
4281 if (!connector->has_tile) {
4282 connector->tile_blob_ptr = NULL;
4283 ret = drm_object_property_set_value(&connector->base,
4284 dev->mode_config.tile_property, 0);
4288 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4289 connector->tile_group->id, connector->tile_is_single_monitor,
4290 connector->num_h_tile, connector->num_v_tile,
4291 connector->tile_h_loc, connector->tile_v_loc,
4292 connector->tile_h_size, connector->tile_v_size);
4293 size = strlen(tile) + 1;
4295 connector->tile_blob_ptr = drm_property_create_blob(connector->dev,
4297 if (!connector->tile_blob_ptr)
4300 ret = drm_object_property_set_value(&connector->base,
4301 dev->mode_config.tile_property,
4302 connector->tile_blob_ptr->base.id);
4305 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4308 * drm_mode_connector_update_edid_property - update the edid property of a connector
4309 * @connector: drm connector
4310 * @edid: new value of the edid property
4312 * This function creates a new blob modeset object and assigns its id to the
4313 * connector's edid property.
4316 * Zero on success, negative errno on failure.
4318 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4319 const struct edid *edid)
4321 struct drm_device *dev = connector->dev;
4325 /* ignore requests to set edid when overridden */
4326 if (connector->override_edid)
4329 if (connector->edid_blob_ptr)
4330 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4332 /* Delete edid, when there is none. */
4334 connector->edid_blob_ptr = NULL;
4335 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4339 size = EDID_LENGTH * (1 + edid->extensions);
4340 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4342 if (!connector->edid_blob_ptr)
4345 ret = drm_object_property_set_value(&connector->base,
4346 dev->mode_config.edid_property,
4347 connector->edid_blob_ptr->base.id);
4351 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4353 /* Some properties could refer to dynamic refcnt'd objects, or things that
4354 * need special locking to handle lifetime issues (ie. to ensure the prop
4355 * value doesn't become invalid part way through the property update due to
4356 * race). The value returned by reference via 'obj' should be passed back
4357 * to drm_property_change_valid_put() after the property is set (and the
4358 * object to which the property is attached has a chance to take it's own
4361 bool drm_property_change_valid_get(struct drm_property *property,
4362 uint64_t value, struct drm_mode_object **ref)
4366 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4371 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4372 if (value < property->values[0] || value > property->values[1])
4375 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4376 int64_t svalue = U642I64(value);
4378 if (svalue < U642I64(property->values[0]) ||
4379 svalue > U642I64(property->values[1]))
4382 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4383 uint64_t valid_mask = 0;
4385 for (i = 0; i < property->num_values; i++)
4386 valid_mask |= (1ULL << property->values[i]);
4387 return !(value & ~valid_mask);
4388 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4389 /* Only the driver knows */
4391 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4392 /* a zero value for an object property translates to null: */
4396 /* handle refcnt'd objects specially: */
4397 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4398 struct drm_framebuffer *fb;
4399 fb = drm_framebuffer_lookup(property->dev, value);
4407 return _object_find(property->dev, value, property->values[0]) != NULL;
4411 for (i = 0; i < property->num_values; i++)
4412 if (property->values[i] == value)
4417 void drm_property_change_valid_put(struct drm_property *property,
4418 struct drm_mode_object *ref)
4423 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4424 if (property->values[0] == DRM_MODE_OBJECT_FB)
4425 drm_framebuffer_unreference(obj_to_fb(ref));
4430 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4433 * @file_priv: DRM file info
4435 * This function sets the current value for a connectors's property. It also
4436 * calls into a driver's ->set_property callback to update the hardware state
4438 * Called by the user via ioctl.
4441 * Zero on success, negative errno on failure.
4443 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4444 void *data, struct drm_file *file_priv)
4446 struct drm_mode_connector_set_property *conn_set_prop = data;
4447 struct drm_mode_obj_set_property obj_set_prop = {
4448 .value = conn_set_prop->value,
4449 .prop_id = conn_set_prop->prop_id,
4450 .obj_id = conn_set_prop->connector_id,
4451 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4454 /* It does all the locking and checking we need */
4455 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4458 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4459 struct drm_property *property,
4463 struct drm_connector *connector = obj_to_connector(obj);
4465 /* Do DPMS ourselves */
4466 if (property == connector->dev->mode_config.dpms_property) {
4467 if (connector->funcs->dpms)
4468 (*connector->funcs->dpms)(connector, (int)value);
4470 } else if (connector->funcs->set_property)
4471 ret = connector->funcs->set_property(connector, property, value);
4473 /* store the property value if successful */
4475 drm_object_property_set_value(&connector->base, property, value);
4479 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4480 struct drm_property *property,
4484 struct drm_crtc *crtc = obj_to_crtc(obj);
4486 if (crtc->funcs->set_property)
4487 ret = crtc->funcs->set_property(crtc, property, value);
4489 drm_object_property_set_value(obj, property, value);
4495 * drm_mode_plane_set_obj_prop - set the value of a property
4496 * @plane: drm plane object to set property value for
4497 * @property: property to set
4498 * @value: value the property should be set to
4500 * This functions sets a given property on a given plane object. This function
4501 * calls the driver's ->set_property callback and changes the software state of
4502 * the property if the callback succeeds.
4505 * Zero on success, error code on failure.
4507 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4508 struct drm_property *property,
4512 struct drm_mode_object *obj = &plane->base;
4514 if (plane->funcs->set_property)
4515 ret = plane->funcs->set_property(plane, property, value);
4517 drm_object_property_set_value(obj, property, value);
4521 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4524 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4527 * @file_priv: DRM file info
4529 * This function retrieves the current value for an object's property. Compared
4530 * to the connector specific ioctl this one is extended to also work on crtc and
4533 * Called by the user via ioctl.
4536 * Zero on success, negative errno on failure.
4538 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4539 struct drm_file *file_priv)
4541 struct drm_mode_obj_get_properties *arg = data;
4542 struct drm_mode_object *obj;
4545 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4548 drm_modeset_lock_all(dev);
4550 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4555 if (!obj->properties) {
4560 ret = get_properties(obj, file_priv->atomic,
4561 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4562 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4566 drm_modeset_unlock_all(dev);
4571 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4574 * @file_priv: DRM file info
4576 * This function sets the current value for an object's property. It also calls
4577 * into a driver's ->set_property callback to update the hardware state.
4578 * Compared to the connector specific ioctl this one is extended to also work on
4579 * crtc and plane objects.
4581 * Called by the user via ioctl.
4584 * Zero on success, negative errno on failure.
4586 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4587 struct drm_file *file_priv)
4589 struct drm_mode_obj_set_property *arg = data;
4590 struct drm_mode_object *arg_obj;
4591 struct drm_mode_object *prop_obj;
4592 struct drm_property *property;
4593 int i, ret = -EINVAL;
4594 struct drm_mode_object *ref;
4596 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4599 drm_modeset_lock_all(dev);
4601 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4606 if (!arg_obj->properties)
4609 for (i = 0; i < arg_obj->properties->count; i++)
4610 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
4613 if (i == arg_obj->properties->count)
4616 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4617 DRM_MODE_OBJECT_PROPERTY);
4622 property = obj_to_property(prop_obj);
4624 if (!drm_property_change_valid_get(property, arg->value, &ref))
4627 switch (arg_obj->type) {
4628 case DRM_MODE_OBJECT_CONNECTOR:
4629 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4632 case DRM_MODE_OBJECT_CRTC:
4633 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4635 case DRM_MODE_OBJECT_PLANE:
4636 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4637 property, arg->value);
4641 drm_property_change_valid_put(property, ref);
4644 drm_modeset_unlock_all(dev);
4649 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4650 * @connector: connector to attach
4651 * @encoder: encoder to attach @connector to
4653 * This function links up a connector to an encoder. Note that the routing
4654 * restrictions between encoders and crtcs are exposed to userspace through the
4655 * possible_clones and possible_crtcs bitmasks.
4658 * Zero on success, negative errno on failure.
4660 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4661 struct drm_encoder *encoder)
4665 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4666 if (connector->encoder_ids[i] == 0) {
4667 connector->encoder_ids[i] = encoder->base.id;
4673 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4676 * drm_mode_crtc_set_gamma_size - set the gamma table size
4677 * @crtc: CRTC to set the gamma table size for
4678 * @gamma_size: size of the gamma table
4680 * Drivers which support gamma tables should set this to the supported gamma
4681 * table size when initializing the CRTC. Currently the drm core only supports a
4682 * fixed gamma table size.
4685 * Zero on success, negative errno on failure.
4687 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4690 crtc->gamma_size = gamma_size;
4692 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
4694 if (!crtc->gamma_store) {
4695 crtc->gamma_size = 0;
4701 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4704 * drm_mode_gamma_set_ioctl - set the gamma table
4707 * @file_priv: DRM file info
4709 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4710 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4712 * Called by the user via ioctl.
4715 * Zero on success, negative errno on failure.
4717 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4718 void *data, struct drm_file *file_priv)
4720 struct drm_mode_crtc_lut *crtc_lut = data;
4721 struct drm_crtc *crtc;
4722 void *r_base, *g_base, *b_base;
4726 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4729 drm_modeset_lock_all(dev);
4730 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4736 if (crtc->funcs->gamma_set == NULL) {
4741 /* memcpy into gamma store */
4742 if (crtc_lut->gamma_size != crtc->gamma_size) {
4747 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4748 r_base = crtc->gamma_store;
4749 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4754 g_base = r_base + size;
4755 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4760 b_base = g_base + size;
4761 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4766 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4769 drm_modeset_unlock_all(dev);
4775 * drm_mode_gamma_get_ioctl - get the gamma table
4778 * @file_priv: DRM file info
4780 * Copy the current gamma table into the storage provided. This also provides
4781 * the gamma table size the driver expects, which can be used to size the
4782 * allocated storage.
4784 * Called by the user via ioctl.
4787 * Zero on success, negative errno on failure.
4789 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4790 void *data, struct drm_file *file_priv)
4792 struct drm_mode_crtc_lut *crtc_lut = data;
4793 struct drm_crtc *crtc;
4794 void *r_base, *g_base, *b_base;
4798 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4801 drm_modeset_lock_all(dev);
4802 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4808 /* memcpy into gamma store */
4809 if (crtc_lut->gamma_size != crtc->gamma_size) {
4814 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4815 r_base = crtc->gamma_store;
4816 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4821 g_base = r_base + size;
4822 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4827 b_base = g_base + size;
4828 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4833 drm_modeset_unlock_all(dev);
4838 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4841 * @file_priv: DRM file info
4843 * This schedules an asynchronous update on a given CRTC, called page flip.
4844 * Optionally a drm event is generated to signal the completion of the event.
4845 * Generic drivers cannot assume that a pageflip with changed framebuffer
4846 * properties (including driver specific metadata like tiling layout) will work,
4847 * but some drivers support e.g. pixel format changes through the pageflip
4850 * Called by the user via ioctl.
4853 * Zero on success, negative errno on failure.
4855 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4856 void *data, struct drm_file *file_priv)
4858 struct drm_mode_crtc_page_flip *page_flip = data;
4859 struct drm_crtc *crtc;
4860 struct drm_framebuffer *fb = NULL;
4861 struct drm_pending_vblank_event *e = NULL;
4862 unsigned long flags;
4865 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4866 page_flip->reserved != 0)
4869 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4872 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4876 drm_modeset_lock_crtc(crtc, crtc->primary);
4877 if (crtc->primary->fb == NULL) {
4878 /* The framebuffer is currently unbound, presumably
4879 * due to a hotplug event, that userspace has not
4886 if (crtc->funcs->page_flip == NULL)
4889 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4895 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4899 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4900 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4905 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4907 spin_lock_irqsave(&dev->event_lock, flags);
4908 if (file_priv->event_space < sizeof(e->event)) {
4909 spin_unlock_irqrestore(&dev->event_lock, flags);
4912 file_priv->event_space -= sizeof(e->event);
4913 spin_unlock_irqrestore(&dev->event_lock, flags);
4915 e = kzalloc(sizeof(*e), GFP_KERNEL);
4917 spin_lock_irqsave(&dev->event_lock, flags);
4918 file_priv->event_space += sizeof(e->event);
4919 spin_unlock_irqrestore(&dev->event_lock, flags);
4923 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4924 e->event.base.length = sizeof(e->event);
4925 e->event.user_data = page_flip->user_data;
4926 e->base.event = &e->event.base;
4927 e->base.file_priv = file_priv;
4929 (void (*) (struct drm_pending_event *)) kfree;
4932 crtc->primary->old_fb = crtc->primary->fb;
4933 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4935 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4936 spin_lock_irqsave(&dev->event_lock, flags);
4937 file_priv->event_space += sizeof(e->event);
4938 spin_unlock_irqrestore(&dev->event_lock, flags);
4941 /* Keep the old fb, don't unref it. */
4942 crtc->primary->old_fb = NULL;
4945 * Warn if the driver hasn't properly updated the crtc->fb
4946 * field to reflect that the new framebuffer is now used.
4947 * Failing to do so will screw with the reference counting
4950 WARN_ON(crtc->primary->fb != fb);
4951 /* Unref only the old framebuffer. */
4957 drm_framebuffer_unreference(fb);
4958 if (crtc->primary->old_fb)
4959 drm_framebuffer_unreference(crtc->primary->old_fb);
4960 crtc->primary->old_fb = NULL;
4961 drm_modeset_unlock_crtc(crtc);
4967 * drm_mode_config_reset - call ->reset callbacks
4970 * This functions calls all the crtc's, encoder's and connector's ->reset
4971 * callback. Drivers can use this in e.g. their driver load or resume code to
4972 * reset hardware and software state.
4974 void drm_mode_config_reset(struct drm_device *dev)
4976 struct drm_crtc *crtc;
4977 struct drm_plane *plane;
4978 struct drm_encoder *encoder;
4979 struct drm_connector *connector;
4981 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4982 if (plane->funcs->reset)
4983 plane->funcs->reset(plane);
4985 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4986 if (crtc->funcs->reset)
4987 crtc->funcs->reset(crtc);
4989 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4990 if (encoder->funcs->reset)
4991 encoder->funcs->reset(encoder);
4993 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4994 connector->status = connector_status_unknown;
4996 if (connector->funcs->reset)
4997 connector->funcs->reset(connector);
5000 EXPORT_SYMBOL(drm_mode_config_reset);
5003 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5006 * @file_priv: DRM file info
5008 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5009 * TTM or something else entirely) and returns the resulting buffer handle. This
5010 * handle can then be wrapped up into a framebuffer modeset object.
5012 * Note that userspace is not allowed to use such objects for render
5013 * acceleration - drivers must create their own private ioctls for such a use
5016 * Called by the user via ioctl.
5019 * Zero on success, negative errno on failure.
5021 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5022 void *data, struct drm_file *file_priv)
5024 struct drm_mode_create_dumb *args = data;
5025 u32 cpp, stride, size;
5027 if (!dev->driver->dumb_create)
5029 if (!args->width || !args->height || !args->bpp)
5032 /* overflow checks for 32bit size calculations */
5033 /* NOTE: DIV_ROUND_UP() can overflow */
5034 cpp = DIV_ROUND_UP(args->bpp, 8);
5035 if (!cpp || cpp > 0xffffffffU / args->width)
5037 stride = cpp * args->width;
5038 if (args->height > 0xffffffffU / stride)
5041 /* test for wrap-around */
5042 size = args->height * stride;
5043 if (PAGE_ALIGN(size) == 0)
5047 * handle, pitch and size are output parameters. Zero them out to
5048 * prevent drivers from accidentally using uninitialized data. Since
5049 * not all existing userspace is clearing these fields properly we
5050 * cannot reject IOCTL with garbage in them.
5056 return dev->driver->dumb_create(file_priv, dev, args);
5060 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5063 * @file_priv: DRM file info
5065 * Allocate an offset in the drm device node's address space to be able to
5066 * memory map a dumb buffer.
5068 * Called by the user via ioctl.
5071 * Zero on success, negative errno on failure.
5073 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5074 void *data, struct drm_file *file_priv)
5076 struct drm_mode_map_dumb *args = data;
5078 /* call driver ioctl to get mmap offset */
5079 if (!dev->driver->dumb_map_offset)
5082 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5086 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5089 * @file_priv: DRM file info
5091 * This destroys the userspace handle for the given dumb backing storage buffer.
5092 * Since buffer objects must be reference counted in the kernel a buffer object
5093 * won't be immediately freed if a framebuffer modeset object still uses it.
5095 * Called by the user via ioctl.
5098 * Zero on success, negative errno on failure.
5100 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5101 void *data, struct drm_file *file_priv)
5103 struct drm_mode_destroy_dumb *args = data;
5105 if (!dev->driver->dumb_destroy)
5108 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5112 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5113 * @format: pixel format (DRM_FORMAT_*)
5114 * @depth: storage for the depth value
5115 * @bpp: storage for the bpp value
5117 * This only supports RGB formats here for compat with code that doesn't use
5118 * pixel formats directly yet.
5120 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5125 case DRM_FORMAT_RGB332:
5126 case DRM_FORMAT_BGR233:
5130 case DRM_FORMAT_XRGB1555:
5131 case DRM_FORMAT_XBGR1555:
5132 case DRM_FORMAT_RGBX5551:
5133 case DRM_FORMAT_BGRX5551:
5134 case DRM_FORMAT_ARGB1555:
5135 case DRM_FORMAT_ABGR1555:
5136 case DRM_FORMAT_RGBA5551:
5137 case DRM_FORMAT_BGRA5551:
5141 case DRM_FORMAT_RGB565:
5142 case DRM_FORMAT_BGR565:
5146 case DRM_FORMAT_RGB888:
5147 case DRM_FORMAT_BGR888:
5151 case DRM_FORMAT_XRGB8888:
5152 case DRM_FORMAT_XBGR8888:
5153 case DRM_FORMAT_RGBX8888:
5154 case DRM_FORMAT_BGRX8888:
5158 case DRM_FORMAT_XRGB2101010:
5159 case DRM_FORMAT_XBGR2101010:
5160 case DRM_FORMAT_RGBX1010102:
5161 case DRM_FORMAT_BGRX1010102:
5162 case DRM_FORMAT_ARGB2101010:
5163 case DRM_FORMAT_ABGR2101010:
5164 case DRM_FORMAT_RGBA1010102:
5165 case DRM_FORMAT_BGRA1010102:
5169 case DRM_FORMAT_ARGB8888:
5170 case DRM_FORMAT_ABGR8888:
5171 case DRM_FORMAT_RGBA8888:
5172 case DRM_FORMAT_BGRA8888:
5177 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5178 drm_get_format_name(format));
5184 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5187 * drm_format_num_planes - get the number of planes for format
5188 * @format: pixel format (DRM_FORMAT_*)
5191 * The number of planes used by the specified pixel format.
5193 int drm_format_num_planes(uint32_t format)
5196 case DRM_FORMAT_YUV410:
5197 case DRM_FORMAT_YVU410:
5198 case DRM_FORMAT_YUV411:
5199 case DRM_FORMAT_YVU411:
5200 case DRM_FORMAT_YUV420:
5201 case DRM_FORMAT_YVU420:
5202 case DRM_FORMAT_YUV422:
5203 case DRM_FORMAT_YVU422:
5204 case DRM_FORMAT_YUV444:
5205 case DRM_FORMAT_YVU444:
5207 case DRM_FORMAT_NV12:
5208 case DRM_FORMAT_NV21:
5209 case DRM_FORMAT_NV16:
5210 case DRM_FORMAT_NV61:
5211 case DRM_FORMAT_NV24:
5212 case DRM_FORMAT_NV42:
5218 EXPORT_SYMBOL(drm_format_num_planes);
5221 * drm_format_plane_cpp - determine the bytes per pixel value
5222 * @format: pixel format (DRM_FORMAT_*)
5223 * @plane: plane index
5226 * The bytes per pixel value for the specified plane.
5228 int drm_format_plane_cpp(uint32_t format, int plane)
5233 if (plane >= drm_format_num_planes(format))
5237 case DRM_FORMAT_YUYV:
5238 case DRM_FORMAT_YVYU:
5239 case DRM_FORMAT_UYVY:
5240 case DRM_FORMAT_VYUY:
5242 case DRM_FORMAT_NV12:
5243 case DRM_FORMAT_NV21:
5244 case DRM_FORMAT_NV16:
5245 case DRM_FORMAT_NV61:
5246 case DRM_FORMAT_NV24:
5247 case DRM_FORMAT_NV42:
5248 return plane ? 2 : 1;
5249 case DRM_FORMAT_YUV410:
5250 case DRM_FORMAT_YVU410:
5251 case DRM_FORMAT_YUV411:
5252 case DRM_FORMAT_YVU411:
5253 case DRM_FORMAT_YUV420:
5254 case DRM_FORMAT_YVU420:
5255 case DRM_FORMAT_YUV422:
5256 case DRM_FORMAT_YVU422:
5257 case DRM_FORMAT_YUV444:
5258 case DRM_FORMAT_YVU444:
5261 drm_fb_get_bpp_depth(format, &depth, &bpp);
5265 EXPORT_SYMBOL(drm_format_plane_cpp);
5268 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5269 * @format: pixel format (DRM_FORMAT_*)
5272 * The horizontal chroma subsampling factor for the
5273 * specified pixel format.
5275 int drm_format_horz_chroma_subsampling(uint32_t format)
5278 case DRM_FORMAT_YUV411:
5279 case DRM_FORMAT_YVU411:
5280 case DRM_FORMAT_YUV410:
5281 case DRM_FORMAT_YVU410:
5283 case DRM_FORMAT_YUYV:
5284 case DRM_FORMAT_YVYU:
5285 case DRM_FORMAT_UYVY:
5286 case DRM_FORMAT_VYUY:
5287 case DRM_FORMAT_NV12:
5288 case DRM_FORMAT_NV21:
5289 case DRM_FORMAT_NV16:
5290 case DRM_FORMAT_NV61:
5291 case DRM_FORMAT_YUV422:
5292 case DRM_FORMAT_YVU422:
5293 case DRM_FORMAT_YUV420:
5294 case DRM_FORMAT_YVU420:
5300 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5303 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5304 * @format: pixel format (DRM_FORMAT_*)
5307 * The vertical chroma subsampling factor for the
5308 * specified pixel format.
5310 int drm_format_vert_chroma_subsampling(uint32_t format)
5313 case DRM_FORMAT_YUV410:
5314 case DRM_FORMAT_YVU410:
5316 case DRM_FORMAT_YUV420:
5317 case DRM_FORMAT_YVU420:
5318 case DRM_FORMAT_NV12:
5319 case DRM_FORMAT_NV21:
5325 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5328 * drm_rotation_simplify() - Try to simplify the rotation
5329 * @rotation: Rotation to be simplified
5330 * @supported_rotations: Supported rotations
5332 * Attempt to simplify the rotation to a form that is supported.
5333 * Eg. if the hardware supports everything except DRM_REFLECT_X
5334 * one could call this function like this:
5336 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5337 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5338 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5340 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5341 * transforms the hardware supports, this function may not
5342 * be able to produce a supported transform, so the caller should
5343 * check the result afterwards.
5345 unsigned int drm_rotation_simplify(unsigned int rotation,
5346 unsigned int supported_rotations)
5348 if (rotation & ~supported_rotations) {
5349 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5350 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5355 EXPORT_SYMBOL(drm_rotation_simplify);
5358 * drm_mode_config_init - initialize DRM mode_configuration structure
5361 * Initialize @dev's mode_config structure, used for tracking the graphics
5362 * configuration of @dev.
5364 * Since this initializes the modeset locks, no locking is possible. Which is no
5365 * problem, since this should happen single threaded at init time. It is the
5366 * driver's problem to ensure this guarantee.
5369 void drm_mode_config_init(struct drm_device *dev)
5371 mutex_init(&dev->mode_config.mutex);
5372 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5373 mutex_init(&dev->mode_config.idr_mutex);
5374 mutex_init(&dev->mode_config.fb_lock);
5375 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5376 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5377 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5378 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5379 INIT_LIST_HEAD(&dev->mode_config.property_list);
5380 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5381 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5382 idr_init(&dev->mode_config.crtc_idr);
5383 idr_init(&dev->mode_config.tile_idr);
5385 drm_modeset_lock_all(dev);
5386 drm_mode_create_standard_properties(dev);
5387 drm_modeset_unlock_all(dev);
5389 /* Just to be sure */
5390 dev->mode_config.num_fb = 0;
5391 dev->mode_config.num_connector = 0;
5392 dev->mode_config.num_crtc = 0;
5393 dev->mode_config.num_encoder = 0;
5394 dev->mode_config.num_overlay_plane = 0;
5395 dev->mode_config.num_total_plane = 0;
5397 EXPORT_SYMBOL(drm_mode_config_init);
5400 * drm_mode_config_cleanup - free up DRM mode_config info
5403 * Free up all the connectors and CRTCs associated with this DRM device, then
5404 * free up the framebuffers and associated buffer objects.
5406 * Note that since this /should/ happen single-threaded at driver/device
5407 * teardown time, no locking is required. It's the driver's job to ensure that
5408 * this guarantee actually holds true.
5410 * FIXME: cleanup any dangling user buffer objects too
5412 void drm_mode_config_cleanup(struct drm_device *dev)
5414 struct drm_connector *connector, *ot;
5415 struct drm_crtc *crtc, *ct;
5416 struct drm_encoder *encoder, *enct;
5417 struct drm_framebuffer *fb, *fbt;
5418 struct drm_property *property, *pt;
5419 struct drm_property_blob *blob, *bt;
5420 struct drm_plane *plane, *plt;
5422 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5424 encoder->funcs->destroy(encoder);
5427 list_for_each_entry_safe(connector, ot,
5428 &dev->mode_config.connector_list, head) {
5429 connector->funcs->destroy(connector);
5432 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5434 drm_property_destroy(dev, property);
5437 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5439 drm_property_destroy_blob(dev, blob);
5443 * Single-threaded teardown context, so it's not required to grab the
5444 * fb_lock to protect against concurrent fb_list access. Contrary, it
5445 * would actually deadlock with the drm_framebuffer_cleanup function.
5447 * Also, if there are any framebuffers left, that's a driver leak now,
5448 * so politely WARN about this.
5450 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5451 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5452 drm_framebuffer_remove(fb);
5455 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5457 plane->funcs->destroy(plane);
5460 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5461 crtc->funcs->destroy(crtc);
5464 idr_destroy(&dev->mode_config.tile_idr);
5465 idr_destroy(&dev->mode_config.crtc_idr);
5466 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5468 EXPORT_SYMBOL(drm_mode_config_cleanup);
5470 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5471 unsigned int supported_rotations)
5473 static const struct drm_prop_enum_list props[] = {
5474 { DRM_ROTATE_0, "rotate-0" },
5475 { DRM_ROTATE_90, "rotate-90" },
5476 { DRM_ROTATE_180, "rotate-180" },
5477 { DRM_ROTATE_270, "rotate-270" },
5478 { DRM_REFLECT_X, "reflect-x" },
5479 { DRM_REFLECT_Y, "reflect-y" },
5482 return drm_property_create_bitmask(dev, 0, "rotation",
5483 props, ARRAY_SIZE(props),
5484 supported_rotations);
5486 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5491 * Tile groups are used to represent tiled monitors with a unique
5492 * integer identifier. Tiled monitors using DisplayID v1.3 have
5493 * a unique 8-byte handle, we store this in a tile group, so we
5494 * have a common identifier for all tiles in a monitor group.
5496 static void drm_tile_group_free(struct kref *kref)
5498 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5499 struct drm_device *dev = tg->dev;
5500 mutex_lock(&dev->mode_config.idr_mutex);
5501 idr_remove(&dev->mode_config.tile_idr, tg->id);
5502 mutex_unlock(&dev->mode_config.idr_mutex);
5507 * drm_mode_put_tile_group - drop a reference to a tile group.
5509 * @tg: tile group to drop reference to.
5511 * drop reference to tile group and free if 0.
5513 void drm_mode_put_tile_group(struct drm_device *dev,
5514 struct drm_tile_group *tg)
5516 kref_put(&tg->refcount, drm_tile_group_free);
5520 * drm_mode_get_tile_group - get a reference to an existing tile group
5522 * @topology: 8-bytes unique per monitor.
5524 * Use the unique bytes to get a reference to an existing tile group.
5527 * tile group or NULL if not found.
5529 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5532 struct drm_tile_group *tg;
5534 mutex_lock(&dev->mode_config.idr_mutex);
5535 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5536 if (!memcmp(tg->group_data, topology, 8)) {
5537 if (!kref_get_unless_zero(&tg->refcount))
5539 mutex_unlock(&dev->mode_config.idr_mutex);
5543 mutex_unlock(&dev->mode_config.idr_mutex);
5548 * drm_mode_create_tile_group - create a tile group from a displayid description
5550 * @topology: 8-bytes unique per monitor.
5552 * Create a tile group for the unique monitor, and get a unique
5553 * identifier for the tile group.
5556 * new tile group or error.
5558 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5561 struct drm_tile_group *tg;
5564 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5566 return ERR_PTR(-ENOMEM);
5568 kref_init(&tg->refcount);
5569 memcpy(tg->group_data, topology, 8);
5572 mutex_lock(&dev->mode_config.idr_mutex);
5573 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5581 mutex_unlock(&dev->mode_config.idr_mutex);