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->gamma_size = crtc->gamma_size;
2003 if (crtc->primary->fb)
2004 crtc_resp->fb_id = crtc->primary->fb->base.id;
2006 crtc_resp->fb_id = 0;
2009 crtc_resp->x = crtc->primary->state->src_x >> 16;
2010 crtc_resp->y = crtc->primary->state->src_y >> 16;
2011 if (crtc->state->enable) {
2012 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
2013 crtc_resp->mode_valid = 1;
2016 crtc_resp->mode_valid = 0;
2019 crtc_resp->x = crtc->x;
2020 crtc_resp->y = crtc->y;
2021 if (crtc->enabled) {
2022 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
2023 crtc_resp->mode_valid = 1;
2026 crtc_resp->mode_valid = 0;
2029 drm_modeset_unlock_crtc(crtc);
2034 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
2035 const struct drm_file *file_priv)
2038 * If user-space hasn't configured the driver to expose the stereo 3D
2039 * modes, don't expose them.
2041 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2047 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2049 /* For atomic drivers only state objects are synchronously updated and
2050 * protected by modeset locks, so check those first. */
2051 if (connector->state)
2052 return connector->state->best_encoder;
2053 return connector->encoder;
2056 /* helper for getconnector and getproperties ioctls */
2057 static int get_properties(struct drm_mode_object *obj, bool atomic,
2058 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2059 uint32_t *arg_count_props)
2064 props_count = obj->properties->count;
2066 props_count -= obj->properties->atomic_count;
2068 if ((*arg_count_props >= props_count) && props_count) {
2069 for (i = 0, copied = 0; copied < props_count; i++) {
2070 struct drm_property *prop = obj->properties->properties[i];
2073 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2076 ret = drm_object_property_get_value(obj, prop, &val);
2080 if (put_user(prop->base.id, prop_ptr + copied))
2083 if (put_user(val, prop_values + copied))
2089 *arg_count_props = props_count;
2095 * drm_mode_getconnector - get connector configuration
2096 * @dev: drm device for the ioctl
2097 * @data: data pointer for the ioctl
2098 * @file_priv: drm file for the ioctl call
2100 * Construct a connector configuration structure to return to the user.
2102 * Called by the user via ioctl.
2105 * Zero on success, negative errno on failure.
2107 int drm_mode_getconnector(struct drm_device *dev, void *data,
2108 struct drm_file *file_priv)
2110 struct drm_mode_get_connector *out_resp = data;
2111 struct drm_connector *connector;
2112 struct drm_encoder *encoder;
2113 struct drm_display_mode *mode;
2115 int encoders_count = 0;
2119 struct drm_mode_modeinfo u_mode;
2120 struct drm_mode_modeinfo __user *mode_ptr;
2121 uint32_t __user *encoder_ptr;
2123 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2126 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2128 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2130 mutex_lock(&dev->mode_config.mutex);
2132 connector = drm_connector_find(dev, out_resp->connector_id);
2138 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2139 if (connector->encoder_ids[i] != 0)
2142 if (out_resp->count_modes == 0) {
2143 connector->funcs->fill_modes(connector,
2144 dev->mode_config.max_width,
2145 dev->mode_config.max_height);
2148 /* delayed so we get modes regardless of pre-fill_modes state */
2149 list_for_each_entry(mode, &connector->modes, head)
2150 if (drm_mode_expose_to_userspace(mode, file_priv))
2153 out_resp->connector_id = connector->base.id;
2154 out_resp->connector_type = connector->connector_type;
2155 out_resp->connector_type_id = connector->connector_type_id;
2156 out_resp->mm_width = connector->display_info.width_mm;
2157 out_resp->mm_height = connector->display_info.height_mm;
2158 out_resp->subpixel = connector->display_info.subpixel_order;
2159 out_resp->connection = connector->status;
2161 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2162 encoder = drm_connector_get_encoder(connector);
2164 out_resp->encoder_id = encoder->base.id;
2166 out_resp->encoder_id = 0;
2169 * This ioctl is called twice, once to determine how much space is
2170 * needed, and the 2nd time to fill it.
2172 if ((out_resp->count_modes >= mode_count) && mode_count) {
2174 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2175 list_for_each_entry(mode, &connector->modes, head) {
2176 if (!drm_mode_expose_to_userspace(mode, file_priv))
2179 drm_crtc_convert_to_umode(&u_mode, mode);
2180 if (copy_to_user(mode_ptr + copied,
2181 &u_mode, sizeof(u_mode))) {
2188 out_resp->count_modes = mode_count;
2190 ret = get_properties(&connector->base, file_priv->atomic,
2191 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2192 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2193 &out_resp->count_props);
2197 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2199 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2200 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2201 if (connector->encoder_ids[i] != 0) {
2202 if (put_user(connector->encoder_ids[i],
2203 encoder_ptr + copied)) {
2211 out_resp->count_encoders = encoders_count;
2214 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2215 mutex_unlock(&dev->mode_config.mutex);
2220 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2222 struct drm_connector *connector;
2223 struct drm_device *dev = encoder->dev;
2224 bool uses_atomic = false;
2226 /* For atomic drivers only state objects are synchronously updated and
2227 * protected by modeset locks, so check those first. */
2228 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2229 if (!connector->state)
2234 if (connector->state->best_encoder != encoder)
2237 return connector->state->crtc;
2240 /* Don't return stale data (e.g. pending async disable). */
2244 return encoder->crtc;
2248 * drm_mode_getencoder - get encoder configuration
2249 * @dev: drm device for the ioctl
2250 * @data: data pointer for the ioctl
2251 * @file_priv: drm file for the ioctl call
2253 * Construct a encoder configuration structure to return to the user.
2255 * Called by the user via ioctl.
2258 * Zero on success, negative errno on failure.
2260 int drm_mode_getencoder(struct drm_device *dev, void *data,
2261 struct drm_file *file_priv)
2263 struct drm_mode_get_encoder *enc_resp = data;
2264 struct drm_encoder *encoder;
2265 struct drm_crtc *crtc;
2267 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2270 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2274 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2275 crtc = drm_encoder_get_crtc(encoder);
2277 enc_resp->crtc_id = crtc->base.id;
2279 enc_resp->crtc_id = 0;
2280 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2282 enc_resp->encoder_type = encoder->encoder_type;
2283 enc_resp->encoder_id = encoder->base.id;
2284 enc_resp->possible_crtcs = encoder->possible_crtcs;
2285 enc_resp->possible_clones = encoder->possible_clones;
2291 * drm_mode_getplane_res - enumerate all plane resources
2294 * @file_priv: DRM file info
2296 * Construct a list of plane ids to return to the user.
2298 * Called by the user via ioctl.
2301 * Zero on success, negative errno on failure.
2303 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2304 struct drm_file *file_priv)
2306 struct drm_mode_get_plane_res *plane_resp = data;
2307 struct drm_mode_config *config;
2308 struct drm_plane *plane;
2309 uint32_t __user *plane_ptr;
2311 unsigned num_planes;
2313 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2316 config = &dev->mode_config;
2318 if (file_priv->universal_planes)
2319 num_planes = config->num_total_plane;
2321 num_planes = config->num_overlay_plane;
2324 * This ioctl is called twice, once to determine how much space is
2325 * needed, and the 2nd time to fill it.
2328 (plane_resp->count_planes >= num_planes)) {
2329 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2331 /* Plane lists are invariant, no locking needed. */
2332 list_for_each_entry(plane, &config->plane_list, head) {
2334 * Unless userspace set the 'universal planes'
2335 * capability bit, only advertise overlays.
2337 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2338 !file_priv->universal_planes)
2341 if (put_user(plane->base.id, plane_ptr + copied))
2346 plane_resp->count_planes = num_planes;
2352 * drm_mode_getplane - get plane configuration
2355 * @file_priv: DRM file info
2357 * Construct a plane configuration structure to return to the user.
2359 * Called by the user via ioctl.
2362 * Zero on success, negative errno on failure.
2364 int drm_mode_getplane(struct drm_device *dev, void *data,
2365 struct drm_file *file_priv)
2367 struct drm_mode_get_plane *plane_resp = data;
2368 struct drm_plane *plane;
2369 uint32_t __user *format_ptr;
2371 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2374 plane = drm_plane_find(dev, plane_resp->plane_id);
2378 drm_modeset_lock(&plane->mutex, NULL);
2380 plane_resp->crtc_id = plane->crtc->base.id;
2382 plane_resp->crtc_id = 0;
2385 plane_resp->fb_id = plane->fb->base.id;
2387 plane_resp->fb_id = 0;
2388 drm_modeset_unlock(&plane->mutex);
2390 plane_resp->plane_id = plane->base.id;
2391 plane_resp->possible_crtcs = plane->possible_crtcs;
2392 plane_resp->gamma_size = 0;
2395 * This ioctl is called twice, once to determine how much space is
2396 * needed, and the 2nd time to fill it.
2398 if (plane->format_count &&
2399 (plane_resp->count_format_types >= plane->format_count)) {
2400 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2401 if (copy_to_user(format_ptr,
2402 plane->format_types,
2403 sizeof(uint32_t) * plane->format_count)) {
2407 plane_resp->count_format_types = plane->format_count;
2413 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2414 * @plane: plane to check for format support
2415 * @format: the pixel format
2418 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2421 int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2425 for (i = 0; i < plane->format_count; i++) {
2426 if (format == plane->format_types[i])
2434 * setplane_internal - setplane handler for internal callers
2436 * Note that we assume an extra reference has already been taken on fb. If the
2437 * update fails, this reference will be dropped before return; if it succeeds,
2438 * the previous framebuffer (if any) will be unreferenced instead.
2440 * src_{x,y,w,h} are provided in 16.16 fixed point format
2442 static int __setplane_internal(struct drm_plane *plane,
2443 struct drm_crtc *crtc,
2444 struct drm_framebuffer *fb,
2445 int32_t crtc_x, int32_t crtc_y,
2446 uint32_t crtc_w, uint32_t crtc_h,
2447 /* src_{x,y,w,h} values are 16.16 fixed point */
2448 uint32_t src_x, uint32_t src_y,
2449 uint32_t src_w, uint32_t src_h)
2452 unsigned int fb_width, fb_height;
2454 /* No fb means shut it down */
2456 plane->old_fb = plane->fb;
2457 ret = plane->funcs->disable_plane(plane);
2462 plane->old_fb = NULL;
2467 /* Check whether this plane is usable on this CRTC */
2468 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2469 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2474 /* Check whether this plane supports the fb pixel format. */
2475 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2477 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2478 drm_get_format_name(fb->pixel_format));
2482 fb_width = fb->width << 16;
2483 fb_height = fb->height << 16;
2485 /* Make sure source coordinates are inside the fb. */
2486 if (src_w > fb_width ||
2487 src_x > fb_width - src_w ||
2488 src_h > fb_height ||
2489 src_y > fb_height - src_h) {
2490 DRM_DEBUG_KMS("Invalid source coordinates "
2491 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2492 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2493 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2494 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2495 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2500 plane->old_fb = plane->fb;
2501 ret = plane->funcs->update_plane(plane, crtc, fb,
2502 crtc_x, crtc_y, crtc_w, crtc_h,
2503 src_x, src_y, src_w, src_h);
2509 plane->old_fb = NULL;
2514 drm_framebuffer_unreference(fb);
2516 drm_framebuffer_unreference(plane->old_fb);
2517 plane->old_fb = NULL;
2522 static int setplane_internal(struct drm_plane *plane,
2523 struct drm_crtc *crtc,
2524 struct drm_framebuffer *fb,
2525 int32_t crtc_x, int32_t crtc_y,
2526 uint32_t crtc_w, uint32_t crtc_h,
2527 /* src_{x,y,w,h} values are 16.16 fixed point */
2528 uint32_t src_x, uint32_t src_y,
2529 uint32_t src_w, uint32_t src_h)
2533 drm_modeset_lock_all(plane->dev);
2534 ret = __setplane_internal(plane, crtc, fb,
2535 crtc_x, crtc_y, crtc_w, crtc_h,
2536 src_x, src_y, src_w, src_h);
2537 drm_modeset_unlock_all(plane->dev);
2543 * drm_mode_setplane - configure a plane's configuration
2545 * @data: ioctl data*
2546 * @file_priv: DRM file info
2548 * Set plane configuration, including placement, fb, scaling, and other factors.
2549 * Or pass a NULL fb to disable (planes may be disabled without providing a
2553 * Zero on success, negative errno on failure.
2555 int drm_mode_setplane(struct drm_device *dev, void *data,
2556 struct drm_file *file_priv)
2558 struct drm_mode_set_plane *plane_req = data;
2559 struct drm_plane *plane;
2560 struct drm_crtc *crtc = NULL;
2561 struct drm_framebuffer *fb = NULL;
2563 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2566 /* Give drivers some help against integer overflows */
2567 if (plane_req->crtc_w > INT_MAX ||
2568 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2569 plane_req->crtc_h > INT_MAX ||
2570 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2571 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2572 plane_req->crtc_w, plane_req->crtc_h,
2573 plane_req->crtc_x, plane_req->crtc_y);
2578 * First, find the plane, crtc, and fb objects. If not available,
2579 * we don't bother to call the driver.
2581 plane = drm_plane_find(dev, plane_req->plane_id);
2583 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2584 plane_req->plane_id);
2588 if (plane_req->fb_id) {
2589 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2591 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2596 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2598 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2599 plane_req->crtc_id);
2605 * setplane_internal will take care of deref'ing either the old or new
2606 * framebuffer depending on success.
2608 return setplane_internal(plane, crtc, fb,
2609 plane_req->crtc_x, plane_req->crtc_y,
2610 plane_req->crtc_w, plane_req->crtc_h,
2611 plane_req->src_x, plane_req->src_y,
2612 plane_req->src_w, plane_req->src_h);
2616 * drm_mode_set_config_internal - helper to call ->set_config
2617 * @set: modeset config to set
2619 * This is a little helper to wrap internal calls to the ->set_config driver
2620 * interface. The only thing it adds is correct refcounting dance.
2623 * Zero on success, negative errno on failure.
2625 int drm_mode_set_config_internal(struct drm_mode_set *set)
2627 struct drm_crtc *crtc = set->crtc;
2628 struct drm_framebuffer *fb;
2629 struct drm_crtc *tmp;
2633 * NOTE: ->set_config can also disable other crtcs (if we steal all
2634 * connectors from it), hence we need to refcount the fbs across all
2635 * crtcs. Atomic modeset will have saner semantics ...
2637 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2638 tmp->primary->old_fb = tmp->primary->fb;
2642 ret = crtc->funcs->set_config(set);
2644 crtc->primary->crtc = crtc;
2645 crtc->primary->fb = fb;
2648 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2649 if (tmp->primary->fb)
2650 drm_framebuffer_reference(tmp->primary->fb);
2651 if (tmp->primary->old_fb)
2652 drm_framebuffer_unreference(tmp->primary->old_fb);
2653 tmp->primary->old_fb = NULL;
2658 EXPORT_SYMBOL(drm_mode_set_config_internal);
2661 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2662 * @mode: mode to query
2663 * @hdisplay: hdisplay value to fill in
2664 * @vdisplay: vdisplay value to fill in
2666 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2667 * the appropriate layout.
2669 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2670 int *hdisplay, int *vdisplay)
2672 struct drm_display_mode adjusted;
2674 drm_mode_copy(&adjusted, mode);
2675 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2676 *hdisplay = adjusted.crtc_hdisplay;
2677 *vdisplay = adjusted.crtc_vdisplay;
2679 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2682 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2684 * @crtc: CRTC that framebuffer will be displayed on
2687 * @mode: mode that framebuffer will be displayed under
2688 * @fb: framebuffer to check size of
2690 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2692 const struct drm_display_mode *mode,
2693 const struct drm_framebuffer *fb)
2696 int hdisplay, vdisplay;
2698 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2700 if (crtc->invert_dimensions)
2701 swap(hdisplay, vdisplay);
2703 if (hdisplay > fb->width ||
2704 vdisplay > fb->height ||
2705 x > fb->width - hdisplay ||
2706 y > fb->height - vdisplay) {
2707 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2708 fb->width, fb->height, hdisplay, vdisplay, x, y,
2709 crtc->invert_dimensions ? " (inverted)" : "");
2715 EXPORT_SYMBOL(drm_crtc_check_viewport);
2718 * drm_mode_setcrtc - set CRTC configuration
2719 * @dev: drm device for the ioctl
2720 * @data: data pointer for the ioctl
2721 * @file_priv: drm file for the ioctl call
2723 * Build a new CRTC configuration based on user request.
2725 * Called by the user via ioctl.
2728 * Zero on success, negative errno on failure.
2730 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2731 struct drm_file *file_priv)
2733 struct drm_mode_config *config = &dev->mode_config;
2734 struct drm_mode_crtc *crtc_req = data;
2735 struct drm_crtc *crtc;
2736 struct drm_connector **connector_set = NULL, *connector;
2737 struct drm_framebuffer *fb = NULL;
2738 struct drm_display_mode *mode = NULL;
2739 struct drm_mode_set set;
2740 uint32_t __user *set_connectors_ptr;
2744 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2747 /* For some reason crtc x/y offsets are signed internally. */
2748 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2751 drm_modeset_lock_all(dev);
2752 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2754 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2758 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2760 if (crtc_req->mode_valid) {
2761 /* If we have a mode we need a framebuffer. */
2762 /* If we pass -1, set the mode with the currently bound fb */
2763 if (crtc_req->fb_id == -1) {
2764 if (!crtc->primary->fb) {
2765 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2769 fb = crtc->primary->fb;
2770 /* Make refcounting symmetric with the lookup path. */
2771 drm_framebuffer_reference(fb);
2773 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2775 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2782 mode = drm_mode_create(dev);
2788 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2790 DRM_DEBUG_KMS("Invalid mode\n");
2794 mode->status = drm_mode_validate_basic(mode);
2795 if (mode->status != MODE_OK) {
2800 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2803 * Check whether the primary plane supports the fb pixel format.
2804 * Drivers not implementing the universal planes API use a
2805 * default formats list provided by the DRM core which doesn't
2806 * match real hardware capabilities. Skip the check in that
2809 if (!crtc->primary->format_default) {
2810 ret = drm_plane_check_pixel_format(crtc->primary,
2813 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2814 drm_get_format_name(fb->pixel_format));
2819 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2826 if (crtc_req->count_connectors == 0 && mode) {
2827 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2832 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2833 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2834 crtc_req->count_connectors);
2839 if (crtc_req->count_connectors > 0) {
2842 /* Avoid unbounded kernel memory allocation */
2843 if (crtc_req->count_connectors > config->num_connector) {
2848 connector_set = kmalloc_array(crtc_req->count_connectors,
2849 sizeof(struct drm_connector *),
2851 if (!connector_set) {
2856 for (i = 0; i < crtc_req->count_connectors; i++) {
2857 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2858 if (get_user(out_id, &set_connectors_ptr[i])) {
2863 connector = drm_connector_find(dev, out_id);
2865 DRM_DEBUG_KMS("Connector id %d unknown\n",
2870 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2874 connector_set[i] = connector;
2879 set.x = crtc_req->x;
2880 set.y = crtc_req->y;
2882 set.connectors = connector_set;
2883 set.num_connectors = crtc_req->count_connectors;
2885 ret = drm_mode_set_config_internal(&set);
2889 drm_framebuffer_unreference(fb);
2891 kfree(connector_set);
2892 drm_mode_destroy(dev, mode);
2893 drm_modeset_unlock_all(dev);
2898 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2899 * universal plane handler call
2900 * @crtc: crtc to update cursor for
2901 * @req: data pointer for the ioctl
2902 * @file_priv: drm file for the ioctl call
2904 * Legacy cursor ioctl's work directly with driver buffer handles. To
2905 * translate legacy ioctl calls into universal plane handler calls, we need to
2906 * wrap the native buffer handle in a drm_framebuffer.
2908 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2909 * buffer with a pitch of 4*width; the universal plane interface should be used
2910 * directly in cases where the hardware can support other buffer settings and
2911 * userspace wants to make use of these capabilities.
2914 * Zero on success, negative errno on failure.
2916 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2917 struct drm_mode_cursor2 *req,
2918 struct drm_file *file_priv)
2920 struct drm_device *dev = crtc->dev;
2921 struct drm_framebuffer *fb = NULL;
2922 struct drm_mode_fb_cmd2 fbreq = {
2923 .width = req->width,
2924 .height = req->height,
2925 .pixel_format = DRM_FORMAT_ARGB8888,
2926 .pitches = { req->width * 4 },
2927 .handles = { req->handle },
2929 int32_t crtc_x, crtc_y;
2930 uint32_t crtc_w = 0, crtc_h = 0;
2931 uint32_t src_w = 0, src_h = 0;
2934 BUG_ON(!crtc->cursor);
2935 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2938 * Obtain fb we'll be using (either new or existing) and take an extra
2939 * reference to it if fb != null. setplane will take care of dropping
2940 * the reference if the plane update fails.
2942 if (req->flags & DRM_MODE_CURSOR_BO) {
2944 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
2946 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2953 fb = crtc->cursor->fb;
2955 drm_framebuffer_reference(fb);
2958 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2962 crtc_x = crtc->cursor_x;
2963 crtc_y = crtc->cursor_y;
2968 crtc_h = fb->height;
2969 src_w = fb->width << 16;
2970 src_h = fb->height << 16;
2974 * setplane_internal will take care of deref'ing either the old or new
2975 * framebuffer depending on success.
2977 ret = __setplane_internal(crtc->cursor, crtc, fb,
2978 crtc_x, crtc_y, crtc_w, crtc_h,
2979 0, 0, src_w, src_h);
2981 /* Update successful; save new cursor position, if necessary */
2982 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2983 crtc->cursor_x = req->x;
2984 crtc->cursor_y = req->y;
2990 static int drm_mode_cursor_common(struct drm_device *dev,
2991 struct drm_mode_cursor2 *req,
2992 struct drm_file *file_priv)
2994 struct drm_crtc *crtc;
2997 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3000 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
3003 crtc = drm_crtc_find(dev, req->crtc_id);
3005 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
3010 * If this crtc has a universal cursor plane, call that plane's update
3011 * handler rather than using legacy cursor handlers.
3013 drm_modeset_lock_crtc(crtc, crtc->cursor);
3015 ret = drm_mode_cursor_universal(crtc, req, file_priv);
3019 if (req->flags & DRM_MODE_CURSOR_BO) {
3020 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
3024 /* Turns off the cursor if handle is 0 */
3025 if (crtc->funcs->cursor_set2)
3026 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
3027 req->width, req->height, req->hot_x, req->hot_y);
3029 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
3030 req->width, req->height);
3033 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3034 if (crtc->funcs->cursor_move) {
3035 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3042 drm_modeset_unlock_crtc(crtc);
3050 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3051 * @dev: drm device for the ioctl
3052 * @data: data pointer for the ioctl
3053 * @file_priv: drm file for the ioctl call
3055 * Set the cursor configuration based on user request.
3057 * Called by the user via ioctl.
3060 * Zero on success, negative errno on failure.
3062 int drm_mode_cursor_ioctl(struct drm_device *dev,
3063 void *data, struct drm_file *file_priv)
3065 struct drm_mode_cursor *req = data;
3066 struct drm_mode_cursor2 new_req;
3068 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3069 new_req.hot_x = new_req.hot_y = 0;
3071 return drm_mode_cursor_common(dev, &new_req, file_priv);
3075 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3076 * @dev: drm device for the ioctl
3077 * @data: data pointer for the ioctl
3078 * @file_priv: drm file for the ioctl call
3080 * Set the cursor configuration based on user request. This implements the 2nd
3081 * version of the cursor ioctl, which allows userspace to additionally specify
3082 * the hotspot of the pointer.
3084 * Called by the user via ioctl.
3087 * Zero on success, negative errno on failure.
3089 int drm_mode_cursor2_ioctl(struct drm_device *dev,
3090 void *data, struct drm_file *file_priv)
3092 struct drm_mode_cursor2 *req = data;
3094 return drm_mode_cursor_common(dev, req, file_priv);
3098 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3099 * @bpp: bits per pixels
3100 * @depth: bit depth per pixel
3102 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3103 * Useful in fbdev emulation code, since that deals in those values.
3105 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3111 fmt = DRM_FORMAT_C8;
3115 fmt = DRM_FORMAT_XRGB1555;
3117 fmt = DRM_FORMAT_RGB565;
3120 fmt = DRM_FORMAT_RGB888;
3124 fmt = DRM_FORMAT_XRGB8888;
3125 else if (depth == 30)
3126 fmt = DRM_FORMAT_XRGB2101010;
3128 fmt = DRM_FORMAT_ARGB8888;
3131 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3132 fmt = DRM_FORMAT_XRGB8888;
3138 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3141 * drm_mode_addfb - add an FB to the graphics configuration
3142 * @dev: drm device for the ioctl
3143 * @data: data pointer for the ioctl
3144 * @file_priv: drm file for the ioctl call
3146 * Add a new FB to the specified CRTC, given a user request. This is the
3147 * original addfb ioctl which only supported RGB formats.
3149 * Called by the user via ioctl.
3152 * Zero on success, negative errno on failure.
3154 int drm_mode_addfb(struct drm_device *dev,
3155 void *data, struct drm_file *file_priv)
3157 struct drm_mode_fb_cmd *or = data;
3158 struct drm_mode_fb_cmd2 r = {};
3161 /* convert to new format and call new ioctl */
3162 r.fb_id = or->fb_id;
3163 r.width = or->width;
3164 r.height = or->height;
3165 r.pitches[0] = or->pitch;
3166 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3167 r.handles[0] = or->handle;
3169 ret = drm_mode_addfb2(dev, &r, file_priv);
3173 or->fb_id = r.fb_id;
3178 static int format_check(const struct drm_mode_fb_cmd2 *r)
3180 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3184 case DRM_FORMAT_RGB332:
3185 case DRM_FORMAT_BGR233:
3186 case DRM_FORMAT_XRGB4444:
3187 case DRM_FORMAT_XBGR4444:
3188 case DRM_FORMAT_RGBX4444:
3189 case DRM_FORMAT_BGRX4444:
3190 case DRM_FORMAT_ARGB4444:
3191 case DRM_FORMAT_ABGR4444:
3192 case DRM_FORMAT_RGBA4444:
3193 case DRM_FORMAT_BGRA4444:
3194 case DRM_FORMAT_XRGB1555:
3195 case DRM_FORMAT_XBGR1555:
3196 case DRM_FORMAT_RGBX5551:
3197 case DRM_FORMAT_BGRX5551:
3198 case DRM_FORMAT_ARGB1555:
3199 case DRM_FORMAT_ABGR1555:
3200 case DRM_FORMAT_RGBA5551:
3201 case DRM_FORMAT_BGRA5551:
3202 case DRM_FORMAT_RGB565:
3203 case DRM_FORMAT_BGR565:
3204 case DRM_FORMAT_RGB888:
3205 case DRM_FORMAT_BGR888:
3206 case DRM_FORMAT_XRGB8888:
3207 case DRM_FORMAT_XBGR8888:
3208 case DRM_FORMAT_RGBX8888:
3209 case DRM_FORMAT_BGRX8888:
3210 case DRM_FORMAT_ARGB8888:
3211 case DRM_FORMAT_ABGR8888:
3212 case DRM_FORMAT_RGBA8888:
3213 case DRM_FORMAT_BGRA8888:
3214 case DRM_FORMAT_XRGB2101010:
3215 case DRM_FORMAT_XBGR2101010:
3216 case DRM_FORMAT_RGBX1010102:
3217 case DRM_FORMAT_BGRX1010102:
3218 case DRM_FORMAT_ARGB2101010:
3219 case DRM_FORMAT_ABGR2101010:
3220 case DRM_FORMAT_RGBA1010102:
3221 case DRM_FORMAT_BGRA1010102:
3222 case DRM_FORMAT_YUYV:
3223 case DRM_FORMAT_YVYU:
3224 case DRM_FORMAT_UYVY:
3225 case DRM_FORMAT_VYUY:
3226 case DRM_FORMAT_AYUV:
3227 case DRM_FORMAT_NV12:
3228 case DRM_FORMAT_NV21:
3229 case DRM_FORMAT_NV16:
3230 case DRM_FORMAT_NV61:
3231 case DRM_FORMAT_NV24:
3232 case DRM_FORMAT_NV42:
3233 case DRM_FORMAT_YUV410:
3234 case DRM_FORMAT_YVU410:
3235 case DRM_FORMAT_YUV411:
3236 case DRM_FORMAT_YVU411:
3237 case DRM_FORMAT_YUV420:
3238 case DRM_FORMAT_YVU420:
3239 case DRM_FORMAT_YUV422:
3240 case DRM_FORMAT_YVU422:
3241 case DRM_FORMAT_YUV444:
3242 case DRM_FORMAT_YVU444:
3245 DRM_DEBUG_KMS("invalid pixel format %s\n",
3246 drm_get_format_name(r->pixel_format));
3251 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3253 int ret, hsub, vsub, num_planes, i;
3255 ret = format_check(r);
3257 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3258 drm_get_format_name(r->pixel_format));
3262 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3263 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3264 num_planes = drm_format_num_planes(r->pixel_format);
3266 if (r->width == 0 || r->width % hsub) {
3267 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3271 if (r->height == 0 || r->height % vsub) {
3272 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3276 for (i = 0; i < num_planes; i++) {
3277 unsigned int width = r->width / (i != 0 ? hsub : 1);
3278 unsigned int height = r->height / (i != 0 ? vsub : 1);
3279 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3281 if (!r->handles[i]) {
3282 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3286 if ((uint64_t) width * cpp > UINT_MAX)
3289 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3292 if (r->pitches[i] < width * cpp) {
3293 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3297 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3298 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3307 static struct drm_framebuffer *
3308 internal_framebuffer_create(struct drm_device *dev,
3309 struct drm_mode_fb_cmd2 *r,
3310 struct drm_file *file_priv)
3312 struct drm_mode_config *config = &dev->mode_config;
3313 struct drm_framebuffer *fb;
3316 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
3317 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3318 return ERR_PTR(-EINVAL);
3321 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3322 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3323 r->width, config->min_width, config->max_width);
3324 return ERR_PTR(-EINVAL);
3326 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3327 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3328 r->height, config->min_height, config->max_height);
3329 return ERR_PTR(-EINVAL);
3332 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3333 !dev->mode_config.allow_fb_modifiers) {
3334 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3335 return ERR_PTR(-EINVAL);
3338 ret = framebuffer_check(r);
3340 return ERR_PTR(ret);
3342 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3344 DRM_DEBUG_KMS("could not create framebuffer\n");
3352 * drm_mode_addfb2 - add an FB to the graphics configuration
3353 * @dev: drm device for the ioctl
3354 * @data: data pointer for the ioctl
3355 * @file_priv: drm file for the ioctl call
3357 * Add a new FB to the specified CRTC, given a user request with format. This is
3358 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3359 * and uses fourcc codes as pixel format specifiers.
3361 * Called by the user via ioctl.
3364 * Zero on success, negative errno on failure.
3366 int drm_mode_addfb2(struct drm_device *dev,
3367 void *data, struct drm_file *file_priv)
3369 struct drm_mode_fb_cmd2 *r = data;
3370 struct drm_framebuffer *fb;
3372 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3375 fb = internal_framebuffer_create(dev, r, file_priv);
3379 /* Transfer ownership to the filp for reaping on close */
3381 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3382 mutex_lock(&file_priv->fbs_lock);
3383 r->fb_id = fb->base.id;
3384 list_add(&fb->filp_head, &file_priv->fbs);
3385 mutex_unlock(&file_priv->fbs_lock);
3391 * drm_mode_rmfb - remove an FB from the configuration
3392 * @dev: drm device for the ioctl
3393 * @data: data pointer for the ioctl
3394 * @file_priv: drm file for the ioctl call
3396 * Remove the FB specified by the user.
3398 * Called by the user via ioctl.
3401 * Zero on success, negative errno on failure.
3403 int drm_mode_rmfb(struct drm_device *dev,
3404 void *data, struct drm_file *file_priv)
3406 struct drm_framebuffer *fb = NULL;
3407 struct drm_framebuffer *fbl = NULL;
3408 uint32_t *id = data;
3411 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3414 mutex_lock(&file_priv->fbs_lock);
3415 mutex_lock(&dev->mode_config.fb_lock);
3416 fb = __drm_framebuffer_lookup(dev, *id);
3420 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3426 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3427 __drm_framebuffer_unregister(dev, fb);
3429 list_del_init(&fb->filp_head);
3430 mutex_unlock(&dev->mode_config.fb_lock);
3431 mutex_unlock(&file_priv->fbs_lock);
3433 drm_framebuffer_remove(fb);
3438 mutex_unlock(&dev->mode_config.fb_lock);
3439 mutex_unlock(&file_priv->fbs_lock);
3445 * drm_mode_getfb - get FB info
3446 * @dev: drm device for the ioctl
3447 * @data: data pointer for the ioctl
3448 * @file_priv: drm file for the ioctl call
3450 * Lookup the FB given its ID and return info about it.
3452 * Called by the user via ioctl.
3455 * Zero on success, negative errno on failure.
3457 int drm_mode_getfb(struct drm_device *dev,
3458 void *data, struct drm_file *file_priv)
3460 struct drm_mode_fb_cmd *r = data;
3461 struct drm_framebuffer *fb;
3464 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3467 fb = drm_framebuffer_lookup(dev, r->fb_id);
3471 r->height = fb->height;
3472 r->width = fb->width;
3473 r->depth = fb->depth;
3474 r->bpp = fb->bits_per_pixel;
3475 r->pitch = fb->pitches[0];
3476 if (fb->funcs->create_handle) {
3477 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3478 drm_is_control_client(file_priv)) {
3479 ret = fb->funcs->create_handle(fb, file_priv,
3482 /* GET_FB() is an unprivileged ioctl so we must not
3483 * return a buffer-handle to non-master processes! For
3484 * backwards-compatibility reasons, we cannot make
3485 * GET_FB() privileged, so just return an invalid handle
3486 * for non-masters. */
3494 drm_framebuffer_unreference(fb);
3500 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3501 * @dev: drm device for the ioctl
3502 * @data: data pointer for the ioctl
3503 * @file_priv: drm file for the ioctl call
3505 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3506 * rectangle list. Generic userspace which does frontbuffer rendering must call
3507 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3508 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3510 * Modesetting drivers which always update the frontbuffer do not need to
3511 * implement the corresponding ->dirty framebuffer callback.
3513 * Called by the user via ioctl.
3516 * Zero on success, negative errno on failure.
3518 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3519 void *data, struct drm_file *file_priv)
3521 struct drm_clip_rect __user *clips_ptr;
3522 struct drm_clip_rect *clips = NULL;
3523 struct drm_mode_fb_dirty_cmd *r = data;
3524 struct drm_framebuffer *fb;
3529 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3532 fb = drm_framebuffer_lookup(dev, r->fb_id);
3536 num_clips = r->num_clips;
3537 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3539 if (!num_clips != !clips_ptr) {
3544 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3546 /* If userspace annotates copy, clips must come in pairs */
3547 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3552 if (num_clips && clips_ptr) {
3553 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3557 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3563 ret = copy_from_user(clips, clips_ptr,
3564 num_clips * sizeof(*clips));
3571 if (fb->funcs->dirty) {
3572 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3581 drm_framebuffer_unreference(fb);
3588 * drm_fb_release - remove and free the FBs on this file
3589 * @priv: drm file for the ioctl
3591 * Destroy all the FBs associated with @filp.
3593 * Called by the user via ioctl.
3596 * Zero on success, negative errno on failure.
3598 void drm_fb_release(struct drm_file *priv)
3600 struct drm_device *dev = priv->minor->dev;
3601 struct drm_framebuffer *fb, *tfb;
3604 * When the file gets released that means no one else can access the fb
3605 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3606 * avoid upsetting lockdep since the universal cursor code adds a
3607 * framebuffer while holding mutex locks.
3609 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3610 * locks is impossible here since no one else but this function can get
3613 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3615 mutex_lock(&dev->mode_config.fb_lock);
3616 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3617 __drm_framebuffer_unregister(dev, fb);
3618 mutex_unlock(&dev->mode_config.fb_lock);
3620 list_del_init(&fb->filp_head);
3622 /* This will also drop the fpriv->fbs reference. */
3623 drm_framebuffer_remove(fb);
3628 * drm_property_create - create a new property type
3630 * @flags: flags specifying the property type
3631 * @name: name of the property
3632 * @num_values: number of pre-defined values
3634 * This creates a new generic drm property which can then be attached to a drm
3635 * object with drm_object_attach_property. The returned property object must be
3636 * freed with drm_property_destroy.
3638 * Note that the DRM core keeps a per-device list of properties and that, if
3639 * drm_mode_config_cleanup() is called, it will destroy all properties created
3643 * A pointer to the newly created property on success, NULL on failure.
3645 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3646 const char *name, int num_values)
3648 struct drm_property *property = NULL;
3651 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3655 property->dev = dev;
3658 property->values = kcalloc(num_values, sizeof(uint64_t),
3660 if (!property->values)
3664 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3668 property->flags = flags;
3669 property->num_values = num_values;
3670 INIT_LIST_HEAD(&property->enum_list);
3673 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3674 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3677 list_add_tail(&property->head, &dev->mode_config.property_list);
3679 WARN_ON(!drm_property_type_valid(property));
3683 kfree(property->values);
3687 EXPORT_SYMBOL(drm_property_create);
3690 * drm_property_create_enum - create a new enumeration property type
3692 * @flags: flags specifying the property type
3693 * @name: name of the property
3694 * @props: enumeration lists with property values
3695 * @num_values: number of pre-defined values
3697 * This creates a new generic drm property which can then be attached to a drm
3698 * object with drm_object_attach_property. The returned property object must be
3699 * freed with drm_property_destroy.
3701 * Userspace is only allowed to set one of the predefined values for enumeration
3705 * A pointer to the newly created property on success, NULL on failure.
3707 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3709 const struct drm_prop_enum_list *props,
3712 struct drm_property *property;
3715 flags |= DRM_MODE_PROP_ENUM;
3717 property = drm_property_create(dev, flags, name, num_values);
3721 for (i = 0; i < num_values; i++) {
3722 ret = drm_property_add_enum(property, i,
3726 drm_property_destroy(dev, property);
3733 EXPORT_SYMBOL(drm_property_create_enum);
3736 * drm_property_create_bitmask - create a new bitmask property type
3738 * @flags: flags specifying the property type
3739 * @name: name of the property
3740 * @props: enumeration lists with property bitflags
3741 * @num_props: size of the @props array
3742 * @supported_bits: bitmask of all supported enumeration values
3744 * This creates a new bitmask drm property which can then be attached to a drm
3745 * object with drm_object_attach_property. The returned property object must be
3746 * freed with drm_property_destroy.
3748 * Compared to plain enumeration properties userspace is allowed to set any
3749 * or'ed together combination of the predefined property bitflag values
3752 * A pointer to the newly created property on success, NULL on failure.
3754 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3755 int flags, const char *name,
3756 const struct drm_prop_enum_list *props,
3758 uint64_t supported_bits)
3760 struct drm_property *property;
3761 int i, ret, index = 0;
3762 int num_values = hweight64(supported_bits);
3764 flags |= DRM_MODE_PROP_BITMASK;
3766 property = drm_property_create(dev, flags, name, num_values);
3769 for (i = 0; i < num_props; i++) {
3770 if (!(supported_bits & (1ULL << props[i].type)))
3773 if (WARN_ON(index >= num_values)) {
3774 drm_property_destroy(dev, property);
3778 ret = drm_property_add_enum(property, index++,
3782 drm_property_destroy(dev, property);
3789 EXPORT_SYMBOL(drm_property_create_bitmask);
3791 static struct drm_property *property_create_range(struct drm_device *dev,
3792 int flags, const char *name,
3793 uint64_t min, uint64_t max)
3795 struct drm_property *property;
3797 property = drm_property_create(dev, flags, name, 2);
3801 property->values[0] = min;
3802 property->values[1] = max;
3808 * drm_property_create_range - create a new unsigned ranged property type
3810 * @flags: flags specifying the property type
3811 * @name: name of the property
3812 * @min: minimum value of the property
3813 * @max: maximum value of the property
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 allowed to set any unsigned integer value in the (min, max)
3823 * A pointer to the newly created property on success, NULL on failure.
3825 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3827 uint64_t min, uint64_t max)
3829 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3832 EXPORT_SYMBOL(drm_property_create_range);
3835 * drm_property_create_signed_range - create a new signed ranged property type
3837 * @flags: flags specifying the property type
3838 * @name: name of the property
3839 * @min: minimum value of the property
3840 * @max: maximum value of the property
3842 * This creates a new generic drm property which can then be attached to a drm
3843 * object with drm_object_attach_property. The returned property object must be
3844 * freed with drm_property_destroy.
3846 * Userspace is allowed to set any signed integer value in the (min, max)
3850 * A pointer to the newly created property on success, NULL on failure.
3852 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3853 int flags, const char *name,
3854 int64_t min, int64_t max)
3856 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3857 name, I642U64(min), I642U64(max));
3859 EXPORT_SYMBOL(drm_property_create_signed_range);
3862 * drm_property_create_object - create a new object property type
3864 * @flags: flags specifying the property type
3865 * @name: name of the property
3866 * @type: object type from DRM_MODE_OBJECT_* defines
3868 * This creates a new generic drm property which can then be attached to a drm
3869 * object with drm_object_attach_property. The returned property object must be
3870 * freed with drm_property_destroy.
3872 * Userspace is only allowed to set this to any property value of the given
3873 * @type. Only useful for atomic properties, which is enforced.
3876 * A pointer to the newly created property on success, NULL on failure.
3878 struct drm_property *drm_property_create_object(struct drm_device *dev,
3879 int flags, const char *name, uint32_t type)
3881 struct drm_property *property;
3883 flags |= DRM_MODE_PROP_OBJECT;
3885 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3888 property = drm_property_create(dev, flags, name, 1);
3892 property->values[0] = type;
3896 EXPORT_SYMBOL(drm_property_create_object);
3899 * drm_property_create_bool - create a new boolean property type
3901 * @flags: flags specifying the property type
3902 * @name: name of the property
3904 * This creates a new generic drm property which can then be attached to a drm
3905 * object with drm_object_attach_property. The returned property object must be
3906 * freed with drm_property_destroy.
3908 * This is implemented as a ranged property with only {0, 1} as valid values.
3911 * A pointer to the newly created property on success, NULL on failure.
3913 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3916 return drm_property_create_range(dev, flags, name, 0, 1);
3918 EXPORT_SYMBOL(drm_property_create_bool);
3921 * drm_property_add_enum - add a possible value to an enumeration property
3922 * @property: enumeration property to change
3923 * @index: index of the new enumeration
3924 * @value: value of the new enumeration
3925 * @name: symbolic name of the new enumeration
3927 * This functions adds enumerations to a property.
3929 * It's use is deprecated, drivers should use one of the more specific helpers
3930 * to directly create the property with all enumerations already attached.
3933 * Zero on success, error code on failure.
3935 int drm_property_add_enum(struct drm_property *property, int index,
3936 uint64_t value, const char *name)
3938 struct drm_property_enum *prop_enum;
3940 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3941 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3945 * Bitmask enum properties have the additional constraint of values
3948 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3952 if (!list_empty(&property->enum_list)) {
3953 list_for_each_entry(prop_enum, &property->enum_list, head) {
3954 if (prop_enum->value == value) {
3955 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3956 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3962 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3966 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3967 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3968 prop_enum->value = value;
3970 property->values[index] = value;
3971 list_add_tail(&prop_enum->head, &property->enum_list);
3974 EXPORT_SYMBOL(drm_property_add_enum);
3977 * drm_property_destroy - destroy a drm property
3979 * @property: property to destry
3981 * This function frees a property including any attached resources like
3982 * enumeration values.
3984 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3986 struct drm_property_enum *prop_enum, *pt;
3988 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3989 list_del(&prop_enum->head);
3993 if (property->num_values)
3994 kfree(property->values);
3995 drm_mode_object_put(dev, &property->base);
3996 list_del(&property->head);
3999 EXPORT_SYMBOL(drm_property_destroy);
4002 * drm_object_attach_property - attach a property to a modeset object
4003 * @obj: drm modeset object
4004 * @property: property to attach
4005 * @init_val: initial value of the property
4007 * This attaches the given property to the modeset object with the given initial
4008 * value. Currently this function cannot fail since the properties are stored in
4009 * a statically sized array.
4011 void drm_object_attach_property(struct drm_mode_object *obj,
4012 struct drm_property *property,
4015 int count = obj->properties->count;
4017 if (count == DRM_OBJECT_MAX_PROPERTY) {
4018 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4019 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4020 "you see this message on the same object type.\n",
4025 obj->properties->properties[count] = property;
4026 obj->properties->values[count] = init_val;
4027 obj->properties->count++;
4028 if (property->flags & DRM_MODE_PROP_ATOMIC)
4029 obj->properties->atomic_count++;
4031 EXPORT_SYMBOL(drm_object_attach_property);
4034 * drm_object_property_set_value - set the value of a property
4035 * @obj: drm mode object to set property value for
4036 * @property: property to set
4037 * @val: value the property should be set to
4039 * This functions sets a given property on a given object. This function only
4040 * changes the software state of the property, it does not call into the
4041 * driver's ->set_property callback.
4044 * Zero on success, error code on failure.
4046 int drm_object_property_set_value(struct drm_mode_object *obj,
4047 struct drm_property *property, uint64_t val)
4051 for (i = 0; i < obj->properties->count; i++) {
4052 if (obj->properties->properties[i] == property) {
4053 obj->properties->values[i] = val;
4060 EXPORT_SYMBOL(drm_object_property_set_value);
4063 * drm_object_property_get_value - retrieve the value of a property
4064 * @obj: drm mode object to get property value from
4065 * @property: property to retrieve
4066 * @val: storage for the property value
4068 * This function retrieves the softare state of the given property for the given
4069 * property. Since there is no driver callback to retrieve the current property
4070 * value this might be out of sync with the hardware, depending upon the driver
4074 * Zero on success, error code on failure.
4076 int drm_object_property_get_value(struct drm_mode_object *obj,
4077 struct drm_property *property, uint64_t *val)
4081 /* read-only properties bypass atomic mechanism and still store
4082 * their value in obj->properties->values[].. mostly to avoid
4083 * having to deal w/ EDID and similar props in atomic paths:
4085 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4086 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4087 return drm_atomic_get_property(obj, property, val);
4089 for (i = 0; i < obj->properties->count; i++) {
4090 if (obj->properties->properties[i] == property) {
4091 *val = obj->properties->values[i];
4098 EXPORT_SYMBOL(drm_object_property_get_value);
4101 * drm_mode_getproperty_ioctl - get the property metadata
4104 * @file_priv: DRM file info
4106 * This function retrieves the metadata for a given property, like the different
4107 * possible values for an enum property or the limits for a range property.
4109 * Blob properties are special
4111 * Called by the user via ioctl.
4114 * Zero on success, negative errno on failure.
4116 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4117 void *data, struct drm_file *file_priv)
4119 struct drm_mode_get_property *out_resp = data;
4120 struct drm_property *property;
4122 int value_count = 0;
4125 struct drm_property_enum *prop_enum;
4126 struct drm_mode_property_enum __user *enum_ptr;
4127 uint64_t __user *values_ptr;
4129 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4132 drm_modeset_lock_all(dev);
4133 property = drm_property_find(dev, out_resp->prop_id);
4139 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4140 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4141 list_for_each_entry(prop_enum, &property->enum_list, head)
4145 value_count = property->num_values;
4147 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4148 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4149 out_resp->flags = property->flags;
4151 if ((out_resp->count_values >= value_count) && value_count) {
4152 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4153 for (i = 0; i < value_count; i++) {
4154 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4160 out_resp->count_values = value_count;
4162 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4163 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4164 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4166 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4167 list_for_each_entry(prop_enum, &property->enum_list, head) {
4169 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4174 if (copy_to_user(&enum_ptr[copied].name,
4175 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4182 out_resp->count_enum_blobs = enum_count;
4186 * NOTE: The idea seems to have been to use this to read all the blob
4187 * property values. But nothing ever added them to the corresponding
4188 * list, userspace always used the special-purpose get_blob ioctl to
4189 * read the value for a blob property. It also doesn't make a lot of
4190 * sense to return values here when everything else is just metadata for
4191 * the property itself.
4193 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4194 out_resp->count_enum_blobs = 0;
4196 drm_modeset_unlock_all(dev);
4200 static struct drm_property_blob *
4201 drm_property_create_blob(struct drm_device *dev, size_t length,
4204 struct drm_property_blob *blob;
4207 if (!length || !data)
4210 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4214 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4220 blob->length = length;
4222 memcpy(blob->data, data, length);
4224 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
4228 static void drm_property_destroy_blob(struct drm_device *dev,
4229 struct drm_property_blob *blob)
4231 drm_mode_object_put(dev, &blob->base);
4232 list_del(&blob->head);
4237 * drm_mode_getblob_ioctl - get the contents of a blob property value
4240 * @file_priv: DRM file info
4242 * This function retrieves the contents of a blob property. The value stored in
4243 * an object's blob property is just a normal modeset object id.
4245 * Called by the user via ioctl.
4248 * Zero on success, negative errno on failure.
4250 int drm_mode_getblob_ioctl(struct drm_device *dev,
4251 void *data, struct drm_file *file_priv)
4253 struct drm_mode_get_blob *out_resp = data;
4254 struct drm_property_blob *blob;
4256 void __user *blob_ptr;
4258 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4261 drm_modeset_lock_all(dev);
4262 blob = drm_property_blob_find(dev, out_resp->blob_id);
4268 if (out_resp->length == blob->length) {
4269 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4270 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4275 out_resp->length = blob->length;
4278 drm_modeset_unlock_all(dev);
4283 * drm_mode_connector_set_path_property - set tile property on connector
4284 * @connector: connector to set property on.
4285 * @path: path to use for property.
4287 * This creates a property to expose to userspace to specify a
4288 * connector path. This is mainly used for DisplayPort MST where
4289 * connectors have a topology and we want to allow userspace to give
4290 * them more meaningful names.
4293 * Zero on success, negative errno on failure.
4295 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4298 struct drm_device *dev = connector->dev;
4299 size_t size = strlen(path) + 1;
4302 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4304 if (!connector->path_blob_ptr)
4307 ret = drm_object_property_set_value(&connector->base,
4308 dev->mode_config.path_property,
4309 connector->path_blob_ptr->base.id);
4312 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4315 * drm_mode_connector_set_tile_property - set tile property on connector
4316 * @connector: connector to set property on.
4318 * This looks up the tile information for a connector, and creates a
4319 * property for userspace to parse if it exists. The property is of
4320 * the form of 8 integers using ':' as a separator.
4323 * Zero on success, errno on failure.
4325 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4327 struct drm_device *dev = connector->dev;
4331 if (connector->tile_blob_ptr)
4332 drm_property_destroy_blob(dev, connector->tile_blob_ptr);
4334 if (!connector->has_tile) {
4335 connector->tile_blob_ptr = NULL;
4336 ret = drm_object_property_set_value(&connector->base,
4337 dev->mode_config.tile_property, 0);
4341 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4342 connector->tile_group->id, connector->tile_is_single_monitor,
4343 connector->num_h_tile, connector->num_v_tile,
4344 connector->tile_h_loc, connector->tile_v_loc,
4345 connector->tile_h_size, connector->tile_v_size);
4346 size = strlen(tile) + 1;
4348 connector->tile_blob_ptr = drm_property_create_blob(connector->dev,
4350 if (!connector->tile_blob_ptr)
4353 ret = drm_object_property_set_value(&connector->base,
4354 dev->mode_config.tile_property,
4355 connector->tile_blob_ptr->base.id);
4358 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4361 * drm_mode_connector_update_edid_property - update the edid property of a connector
4362 * @connector: drm connector
4363 * @edid: new value of the edid property
4365 * This function creates a new blob modeset object and assigns its id to the
4366 * connector's edid property.
4369 * Zero on success, negative errno on failure.
4371 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4372 const struct edid *edid)
4374 struct drm_device *dev = connector->dev;
4378 /* ignore requests to set edid when overridden */
4379 if (connector->override_edid)
4382 if (connector->edid_blob_ptr)
4383 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4385 /* Delete edid, when there is none. */
4387 connector->edid_blob_ptr = NULL;
4388 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4392 size = EDID_LENGTH * (1 + edid->extensions);
4393 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4395 if (!connector->edid_blob_ptr)
4398 ret = drm_object_property_set_value(&connector->base,
4399 dev->mode_config.edid_property,
4400 connector->edid_blob_ptr->base.id);
4404 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4406 /* Some properties could refer to dynamic refcnt'd objects, or things that
4407 * need special locking to handle lifetime issues (ie. to ensure the prop
4408 * value doesn't become invalid part way through the property update due to
4409 * race). The value returned by reference via 'obj' should be passed back
4410 * to drm_property_change_valid_put() after the property is set (and the
4411 * object to which the property is attached has a chance to take it's own
4414 bool drm_property_change_valid_get(struct drm_property *property,
4415 uint64_t value, struct drm_mode_object **ref)
4419 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4424 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4425 if (value < property->values[0] || value > property->values[1])
4428 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4429 int64_t svalue = U642I64(value);
4431 if (svalue < U642I64(property->values[0]) ||
4432 svalue > U642I64(property->values[1]))
4435 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4436 uint64_t valid_mask = 0;
4438 for (i = 0; i < property->num_values; i++)
4439 valid_mask |= (1ULL << property->values[i]);
4440 return !(value & ~valid_mask);
4441 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4442 /* Only the driver knows */
4444 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4445 /* a zero value for an object property translates to null: */
4449 /* handle refcnt'd objects specially: */
4450 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4451 struct drm_framebuffer *fb;
4452 fb = drm_framebuffer_lookup(property->dev, value);
4460 return _object_find(property->dev, value, property->values[0]) != NULL;
4464 for (i = 0; i < property->num_values; i++)
4465 if (property->values[i] == value)
4470 void drm_property_change_valid_put(struct drm_property *property,
4471 struct drm_mode_object *ref)
4476 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4477 if (property->values[0] == DRM_MODE_OBJECT_FB)
4478 drm_framebuffer_unreference(obj_to_fb(ref));
4483 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4486 * @file_priv: DRM file info
4488 * This function sets the current value for a connectors's property. It also
4489 * calls into a driver's ->set_property callback to update the hardware state
4491 * Called by the user via ioctl.
4494 * Zero on success, negative errno on failure.
4496 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4497 void *data, struct drm_file *file_priv)
4499 struct drm_mode_connector_set_property *conn_set_prop = data;
4500 struct drm_mode_obj_set_property obj_set_prop = {
4501 .value = conn_set_prop->value,
4502 .prop_id = conn_set_prop->prop_id,
4503 .obj_id = conn_set_prop->connector_id,
4504 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4507 /* It does all the locking and checking we need */
4508 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4511 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4512 struct drm_property *property,
4516 struct drm_connector *connector = obj_to_connector(obj);
4518 /* Do DPMS ourselves */
4519 if (property == connector->dev->mode_config.dpms_property) {
4520 if (connector->funcs->dpms)
4521 (*connector->funcs->dpms)(connector, (int)value);
4523 } else if (connector->funcs->set_property)
4524 ret = connector->funcs->set_property(connector, property, value);
4526 /* store the property value if successful */
4528 drm_object_property_set_value(&connector->base, property, value);
4532 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4533 struct drm_property *property,
4537 struct drm_crtc *crtc = obj_to_crtc(obj);
4539 if (crtc->funcs->set_property)
4540 ret = crtc->funcs->set_property(crtc, property, value);
4542 drm_object_property_set_value(obj, property, value);
4548 * drm_mode_plane_set_obj_prop - set the value of a property
4549 * @plane: drm plane object to set property value for
4550 * @property: property to set
4551 * @value: value the property should be set to
4553 * This functions sets a given property on a given plane object. This function
4554 * calls the driver's ->set_property callback and changes the software state of
4555 * the property if the callback succeeds.
4558 * Zero on success, error code on failure.
4560 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4561 struct drm_property *property,
4565 struct drm_mode_object *obj = &plane->base;
4567 if (plane->funcs->set_property)
4568 ret = plane->funcs->set_property(plane, property, value);
4570 drm_object_property_set_value(obj, property, value);
4574 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4577 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4580 * @file_priv: DRM file info
4582 * This function retrieves the current value for an object's property. Compared
4583 * to the connector specific ioctl this one is extended to also work on crtc and
4586 * Called by the user via ioctl.
4589 * Zero on success, negative errno on failure.
4591 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4592 struct drm_file *file_priv)
4594 struct drm_mode_obj_get_properties *arg = data;
4595 struct drm_mode_object *obj;
4598 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4601 drm_modeset_lock_all(dev);
4603 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4608 if (!obj->properties) {
4613 ret = get_properties(obj, file_priv->atomic,
4614 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4615 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4619 drm_modeset_unlock_all(dev);
4624 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4627 * @file_priv: DRM file info
4629 * This function sets the current value for an object's property. It also calls
4630 * into a driver's ->set_property callback to update the hardware state.
4631 * Compared to the connector specific ioctl this one is extended to also work on
4632 * crtc and plane objects.
4634 * Called by the user via ioctl.
4637 * Zero on success, negative errno on failure.
4639 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4640 struct drm_file *file_priv)
4642 struct drm_mode_obj_set_property *arg = data;
4643 struct drm_mode_object *arg_obj;
4644 struct drm_mode_object *prop_obj;
4645 struct drm_property *property;
4646 int i, ret = -EINVAL;
4647 struct drm_mode_object *ref;
4649 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4652 drm_modeset_lock_all(dev);
4654 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4659 if (!arg_obj->properties)
4662 for (i = 0; i < arg_obj->properties->count; i++)
4663 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
4666 if (i == arg_obj->properties->count)
4669 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4670 DRM_MODE_OBJECT_PROPERTY);
4675 property = obj_to_property(prop_obj);
4677 if (!drm_property_change_valid_get(property, arg->value, &ref))
4680 switch (arg_obj->type) {
4681 case DRM_MODE_OBJECT_CONNECTOR:
4682 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4685 case DRM_MODE_OBJECT_CRTC:
4686 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4688 case DRM_MODE_OBJECT_PLANE:
4689 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4690 property, arg->value);
4694 drm_property_change_valid_put(property, ref);
4697 drm_modeset_unlock_all(dev);
4702 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4703 * @connector: connector to attach
4704 * @encoder: encoder to attach @connector to
4706 * This function links up a connector to an encoder. Note that the routing
4707 * restrictions between encoders and crtcs are exposed to userspace through the
4708 * possible_clones and possible_crtcs bitmasks.
4711 * Zero on success, negative errno on failure.
4713 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4714 struct drm_encoder *encoder)
4718 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4719 if (connector->encoder_ids[i] == 0) {
4720 connector->encoder_ids[i] = encoder->base.id;
4726 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4729 * drm_mode_crtc_set_gamma_size - set the gamma table size
4730 * @crtc: CRTC to set the gamma table size for
4731 * @gamma_size: size of the gamma table
4733 * Drivers which support gamma tables should set this to the supported gamma
4734 * table size when initializing the CRTC. Currently the drm core only supports a
4735 * fixed gamma table size.
4738 * Zero on success, negative errno on failure.
4740 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4743 crtc->gamma_size = gamma_size;
4745 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
4747 if (!crtc->gamma_store) {
4748 crtc->gamma_size = 0;
4754 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4757 * drm_mode_gamma_set_ioctl - set the gamma table
4760 * @file_priv: DRM file info
4762 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4763 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4765 * Called by the user via ioctl.
4768 * Zero on success, negative errno on failure.
4770 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4771 void *data, struct drm_file *file_priv)
4773 struct drm_mode_crtc_lut *crtc_lut = data;
4774 struct drm_crtc *crtc;
4775 void *r_base, *g_base, *b_base;
4779 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4782 drm_modeset_lock_all(dev);
4783 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4789 if (crtc->funcs->gamma_set == NULL) {
4794 /* memcpy into gamma store */
4795 if (crtc_lut->gamma_size != crtc->gamma_size) {
4800 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4801 r_base = crtc->gamma_store;
4802 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4807 g_base = r_base + size;
4808 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4813 b_base = g_base + size;
4814 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4819 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4822 drm_modeset_unlock_all(dev);
4828 * drm_mode_gamma_get_ioctl - get the gamma table
4831 * @file_priv: DRM file info
4833 * Copy the current gamma table into the storage provided. This also provides
4834 * the gamma table size the driver expects, which can be used to size the
4835 * allocated storage.
4837 * Called by the user via ioctl.
4840 * Zero on success, negative errno on failure.
4842 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4843 void *data, struct drm_file *file_priv)
4845 struct drm_mode_crtc_lut *crtc_lut = data;
4846 struct drm_crtc *crtc;
4847 void *r_base, *g_base, *b_base;
4851 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4854 drm_modeset_lock_all(dev);
4855 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4861 /* memcpy into gamma store */
4862 if (crtc_lut->gamma_size != crtc->gamma_size) {
4867 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4868 r_base = crtc->gamma_store;
4869 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4874 g_base = r_base + size;
4875 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4880 b_base = g_base + size;
4881 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4886 drm_modeset_unlock_all(dev);
4891 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4894 * @file_priv: DRM file info
4896 * This schedules an asynchronous update on a given CRTC, called page flip.
4897 * Optionally a drm event is generated to signal the completion of the event.
4898 * Generic drivers cannot assume that a pageflip with changed framebuffer
4899 * properties (including driver specific metadata like tiling layout) will work,
4900 * but some drivers support e.g. pixel format changes through the pageflip
4903 * Called by the user via ioctl.
4906 * Zero on success, negative errno on failure.
4908 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4909 void *data, struct drm_file *file_priv)
4911 struct drm_mode_crtc_page_flip *page_flip = data;
4912 struct drm_crtc *crtc;
4913 struct drm_framebuffer *fb = NULL;
4914 struct drm_pending_vblank_event *e = NULL;
4915 unsigned long flags;
4918 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4919 page_flip->reserved != 0)
4922 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4925 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4929 drm_modeset_lock_crtc(crtc, crtc->primary);
4930 if (crtc->primary->fb == NULL) {
4931 /* The framebuffer is currently unbound, presumably
4932 * due to a hotplug event, that userspace has not
4939 if (crtc->funcs->page_flip == NULL)
4942 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4948 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4952 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4953 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4958 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4960 spin_lock_irqsave(&dev->event_lock, flags);
4961 if (file_priv->event_space < sizeof(e->event)) {
4962 spin_unlock_irqrestore(&dev->event_lock, flags);
4965 file_priv->event_space -= sizeof(e->event);
4966 spin_unlock_irqrestore(&dev->event_lock, flags);
4968 e = kzalloc(sizeof(*e), GFP_KERNEL);
4970 spin_lock_irqsave(&dev->event_lock, flags);
4971 file_priv->event_space += sizeof(e->event);
4972 spin_unlock_irqrestore(&dev->event_lock, flags);
4976 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4977 e->event.base.length = sizeof(e->event);
4978 e->event.user_data = page_flip->user_data;
4979 e->base.event = &e->event.base;
4980 e->base.file_priv = file_priv;
4982 (void (*) (struct drm_pending_event *)) kfree;
4985 crtc->primary->old_fb = crtc->primary->fb;
4986 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4988 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4989 spin_lock_irqsave(&dev->event_lock, flags);
4990 file_priv->event_space += sizeof(e->event);
4991 spin_unlock_irqrestore(&dev->event_lock, flags);
4994 /* Keep the old fb, don't unref it. */
4995 crtc->primary->old_fb = NULL;
4998 * Warn if the driver hasn't properly updated the crtc->fb
4999 * field to reflect that the new framebuffer is now used.
5000 * Failing to do so will screw with the reference counting
5003 WARN_ON(crtc->primary->fb != fb);
5004 /* Unref only the old framebuffer. */
5010 drm_framebuffer_unreference(fb);
5011 if (crtc->primary->old_fb)
5012 drm_framebuffer_unreference(crtc->primary->old_fb);
5013 crtc->primary->old_fb = NULL;
5014 drm_modeset_unlock_crtc(crtc);
5020 * drm_mode_config_reset - call ->reset callbacks
5023 * This functions calls all the crtc's, encoder's and connector's ->reset
5024 * callback. Drivers can use this in e.g. their driver load or resume code to
5025 * reset hardware and software state.
5027 void drm_mode_config_reset(struct drm_device *dev)
5029 struct drm_crtc *crtc;
5030 struct drm_plane *plane;
5031 struct drm_encoder *encoder;
5032 struct drm_connector *connector;
5034 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
5035 if (plane->funcs->reset)
5036 plane->funcs->reset(plane);
5038 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
5039 if (crtc->funcs->reset)
5040 crtc->funcs->reset(crtc);
5042 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
5043 if (encoder->funcs->reset)
5044 encoder->funcs->reset(encoder);
5046 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
5047 connector->status = connector_status_unknown;
5049 if (connector->funcs->reset)
5050 connector->funcs->reset(connector);
5053 EXPORT_SYMBOL(drm_mode_config_reset);
5056 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5059 * @file_priv: DRM file info
5061 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5062 * TTM or something else entirely) and returns the resulting buffer handle. This
5063 * handle can then be wrapped up into a framebuffer modeset object.
5065 * Note that userspace is not allowed to use such objects for render
5066 * acceleration - drivers must create their own private ioctls for such a use
5069 * Called by the user via ioctl.
5072 * Zero on success, negative errno on failure.
5074 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5075 void *data, struct drm_file *file_priv)
5077 struct drm_mode_create_dumb *args = data;
5078 u32 cpp, stride, size;
5080 if (!dev->driver->dumb_create)
5082 if (!args->width || !args->height || !args->bpp)
5085 /* overflow checks for 32bit size calculations */
5086 /* NOTE: DIV_ROUND_UP() can overflow */
5087 cpp = DIV_ROUND_UP(args->bpp, 8);
5088 if (!cpp || cpp > 0xffffffffU / args->width)
5090 stride = cpp * args->width;
5091 if (args->height > 0xffffffffU / stride)
5094 /* test for wrap-around */
5095 size = args->height * stride;
5096 if (PAGE_ALIGN(size) == 0)
5100 * handle, pitch and size are output parameters. Zero them out to
5101 * prevent drivers from accidentally using uninitialized data. Since
5102 * not all existing userspace is clearing these fields properly we
5103 * cannot reject IOCTL with garbage in them.
5109 return dev->driver->dumb_create(file_priv, dev, args);
5113 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5116 * @file_priv: DRM file info
5118 * Allocate an offset in the drm device node's address space to be able to
5119 * memory map a dumb buffer.
5121 * Called by the user via ioctl.
5124 * Zero on success, negative errno on failure.
5126 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5127 void *data, struct drm_file *file_priv)
5129 struct drm_mode_map_dumb *args = data;
5131 /* call driver ioctl to get mmap offset */
5132 if (!dev->driver->dumb_map_offset)
5135 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5139 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5142 * @file_priv: DRM file info
5144 * This destroys the userspace handle for the given dumb backing storage buffer.
5145 * Since buffer objects must be reference counted in the kernel a buffer object
5146 * won't be immediately freed if a framebuffer modeset object still uses it.
5148 * Called by the user via ioctl.
5151 * Zero on success, negative errno on failure.
5153 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5154 void *data, struct drm_file *file_priv)
5156 struct drm_mode_destroy_dumb *args = data;
5158 if (!dev->driver->dumb_destroy)
5161 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5165 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5166 * @format: pixel format (DRM_FORMAT_*)
5167 * @depth: storage for the depth value
5168 * @bpp: storage for the bpp value
5170 * This only supports RGB formats here for compat with code that doesn't use
5171 * pixel formats directly yet.
5173 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5178 case DRM_FORMAT_RGB332:
5179 case DRM_FORMAT_BGR233:
5183 case DRM_FORMAT_XRGB1555:
5184 case DRM_FORMAT_XBGR1555:
5185 case DRM_FORMAT_RGBX5551:
5186 case DRM_FORMAT_BGRX5551:
5187 case DRM_FORMAT_ARGB1555:
5188 case DRM_FORMAT_ABGR1555:
5189 case DRM_FORMAT_RGBA5551:
5190 case DRM_FORMAT_BGRA5551:
5194 case DRM_FORMAT_RGB565:
5195 case DRM_FORMAT_BGR565:
5199 case DRM_FORMAT_RGB888:
5200 case DRM_FORMAT_BGR888:
5204 case DRM_FORMAT_XRGB8888:
5205 case DRM_FORMAT_XBGR8888:
5206 case DRM_FORMAT_RGBX8888:
5207 case DRM_FORMAT_BGRX8888:
5211 case DRM_FORMAT_XRGB2101010:
5212 case DRM_FORMAT_XBGR2101010:
5213 case DRM_FORMAT_RGBX1010102:
5214 case DRM_FORMAT_BGRX1010102:
5215 case DRM_FORMAT_ARGB2101010:
5216 case DRM_FORMAT_ABGR2101010:
5217 case DRM_FORMAT_RGBA1010102:
5218 case DRM_FORMAT_BGRA1010102:
5222 case DRM_FORMAT_ARGB8888:
5223 case DRM_FORMAT_ABGR8888:
5224 case DRM_FORMAT_RGBA8888:
5225 case DRM_FORMAT_BGRA8888:
5230 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5231 drm_get_format_name(format));
5237 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5240 * drm_format_num_planes - get the number of planes for format
5241 * @format: pixel format (DRM_FORMAT_*)
5244 * The number of planes used by the specified pixel format.
5246 int drm_format_num_planes(uint32_t format)
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:
5260 case DRM_FORMAT_NV12:
5261 case DRM_FORMAT_NV21:
5262 case DRM_FORMAT_NV16:
5263 case DRM_FORMAT_NV61:
5264 case DRM_FORMAT_NV24:
5265 case DRM_FORMAT_NV42:
5271 EXPORT_SYMBOL(drm_format_num_planes);
5274 * drm_format_plane_cpp - determine the bytes per pixel value
5275 * @format: pixel format (DRM_FORMAT_*)
5276 * @plane: plane index
5279 * The bytes per pixel value for the specified plane.
5281 int drm_format_plane_cpp(uint32_t format, int plane)
5286 if (plane >= drm_format_num_planes(format))
5290 case DRM_FORMAT_YUYV:
5291 case DRM_FORMAT_YVYU:
5292 case DRM_FORMAT_UYVY:
5293 case DRM_FORMAT_VYUY:
5295 case DRM_FORMAT_NV12:
5296 case DRM_FORMAT_NV21:
5297 case DRM_FORMAT_NV16:
5298 case DRM_FORMAT_NV61:
5299 case DRM_FORMAT_NV24:
5300 case DRM_FORMAT_NV42:
5301 return plane ? 2 : 1;
5302 case DRM_FORMAT_YUV410:
5303 case DRM_FORMAT_YVU410:
5304 case DRM_FORMAT_YUV411:
5305 case DRM_FORMAT_YVU411:
5306 case DRM_FORMAT_YUV420:
5307 case DRM_FORMAT_YVU420:
5308 case DRM_FORMAT_YUV422:
5309 case DRM_FORMAT_YVU422:
5310 case DRM_FORMAT_YUV444:
5311 case DRM_FORMAT_YVU444:
5314 drm_fb_get_bpp_depth(format, &depth, &bpp);
5318 EXPORT_SYMBOL(drm_format_plane_cpp);
5321 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5322 * @format: pixel format (DRM_FORMAT_*)
5325 * The horizontal chroma subsampling factor for the
5326 * specified pixel format.
5328 int drm_format_horz_chroma_subsampling(uint32_t format)
5331 case DRM_FORMAT_YUV411:
5332 case DRM_FORMAT_YVU411:
5333 case DRM_FORMAT_YUV410:
5334 case DRM_FORMAT_YVU410:
5336 case DRM_FORMAT_YUYV:
5337 case DRM_FORMAT_YVYU:
5338 case DRM_FORMAT_UYVY:
5339 case DRM_FORMAT_VYUY:
5340 case DRM_FORMAT_NV12:
5341 case DRM_FORMAT_NV21:
5342 case DRM_FORMAT_NV16:
5343 case DRM_FORMAT_NV61:
5344 case DRM_FORMAT_YUV422:
5345 case DRM_FORMAT_YVU422:
5346 case DRM_FORMAT_YUV420:
5347 case DRM_FORMAT_YVU420:
5353 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5356 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5357 * @format: pixel format (DRM_FORMAT_*)
5360 * The vertical chroma subsampling factor for the
5361 * specified pixel format.
5363 int drm_format_vert_chroma_subsampling(uint32_t format)
5366 case DRM_FORMAT_YUV410:
5367 case DRM_FORMAT_YVU410:
5369 case DRM_FORMAT_YUV420:
5370 case DRM_FORMAT_YVU420:
5371 case DRM_FORMAT_NV12:
5372 case DRM_FORMAT_NV21:
5378 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5381 * drm_rotation_simplify() - Try to simplify the rotation
5382 * @rotation: Rotation to be simplified
5383 * @supported_rotations: Supported rotations
5385 * Attempt to simplify the rotation to a form that is supported.
5386 * Eg. if the hardware supports everything except DRM_REFLECT_X
5387 * one could call this function like this:
5389 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5390 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5391 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5393 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5394 * transforms the hardware supports, this function may not
5395 * be able to produce a supported transform, so the caller should
5396 * check the result afterwards.
5398 unsigned int drm_rotation_simplify(unsigned int rotation,
5399 unsigned int supported_rotations)
5401 if (rotation & ~supported_rotations) {
5402 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5403 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5408 EXPORT_SYMBOL(drm_rotation_simplify);
5411 * drm_mode_config_init - initialize DRM mode_configuration structure
5414 * Initialize @dev's mode_config structure, used for tracking the graphics
5415 * configuration of @dev.
5417 * Since this initializes the modeset locks, no locking is possible. Which is no
5418 * problem, since this should happen single threaded at init time. It is the
5419 * driver's problem to ensure this guarantee.
5422 void drm_mode_config_init(struct drm_device *dev)
5424 mutex_init(&dev->mode_config.mutex);
5425 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5426 mutex_init(&dev->mode_config.idr_mutex);
5427 mutex_init(&dev->mode_config.fb_lock);
5428 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5429 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5430 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5431 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5432 INIT_LIST_HEAD(&dev->mode_config.property_list);
5433 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5434 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5435 idr_init(&dev->mode_config.crtc_idr);
5436 idr_init(&dev->mode_config.tile_idr);
5438 drm_modeset_lock_all(dev);
5439 drm_mode_create_standard_properties(dev);
5440 drm_modeset_unlock_all(dev);
5442 /* Just to be sure */
5443 dev->mode_config.num_fb = 0;
5444 dev->mode_config.num_connector = 0;
5445 dev->mode_config.num_crtc = 0;
5446 dev->mode_config.num_encoder = 0;
5447 dev->mode_config.num_overlay_plane = 0;
5448 dev->mode_config.num_total_plane = 0;
5450 EXPORT_SYMBOL(drm_mode_config_init);
5453 * drm_mode_config_cleanup - free up DRM mode_config info
5456 * Free up all the connectors and CRTCs associated with this DRM device, then
5457 * free up the framebuffers and associated buffer objects.
5459 * Note that since this /should/ happen single-threaded at driver/device
5460 * teardown time, no locking is required. It's the driver's job to ensure that
5461 * this guarantee actually holds true.
5463 * FIXME: cleanup any dangling user buffer objects too
5465 void drm_mode_config_cleanup(struct drm_device *dev)
5467 struct drm_connector *connector, *ot;
5468 struct drm_crtc *crtc, *ct;
5469 struct drm_encoder *encoder, *enct;
5470 struct drm_framebuffer *fb, *fbt;
5471 struct drm_property *property, *pt;
5472 struct drm_property_blob *blob, *bt;
5473 struct drm_plane *plane, *plt;
5475 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5477 encoder->funcs->destroy(encoder);
5480 list_for_each_entry_safe(connector, ot,
5481 &dev->mode_config.connector_list, head) {
5482 connector->funcs->destroy(connector);
5485 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5487 drm_property_destroy(dev, property);
5490 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5492 drm_property_destroy_blob(dev, blob);
5496 * Single-threaded teardown context, so it's not required to grab the
5497 * fb_lock to protect against concurrent fb_list access. Contrary, it
5498 * would actually deadlock with the drm_framebuffer_cleanup function.
5500 * Also, if there are any framebuffers left, that's a driver leak now,
5501 * so politely WARN about this.
5503 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5504 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5505 drm_framebuffer_remove(fb);
5508 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5510 plane->funcs->destroy(plane);
5513 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5514 crtc->funcs->destroy(crtc);
5517 idr_destroy(&dev->mode_config.tile_idr);
5518 idr_destroy(&dev->mode_config.crtc_idr);
5519 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5521 EXPORT_SYMBOL(drm_mode_config_cleanup);
5523 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5524 unsigned int supported_rotations)
5526 static const struct drm_prop_enum_list props[] = {
5527 { DRM_ROTATE_0, "rotate-0" },
5528 { DRM_ROTATE_90, "rotate-90" },
5529 { DRM_ROTATE_180, "rotate-180" },
5530 { DRM_ROTATE_270, "rotate-270" },
5531 { DRM_REFLECT_X, "reflect-x" },
5532 { DRM_REFLECT_Y, "reflect-y" },
5535 return drm_property_create_bitmask(dev, 0, "rotation",
5536 props, ARRAY_SIZE(props),
5537 supported_rotations);
5539 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5544 * Tile groups are used to represent tiled monitors with a unique
5545 * integer identifier. Tiled monitors using DisplayID v1.3 have
5546 * a unique 8-byte handle, we store this in a tile group, so we
5547 * have a common identifier for all tiles in a monitor group.
5549 static void drm_tile_group_free(struct kref *kref)
5551 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5552 struct drm_device *dev = tg->dev;
5553 mutex_lock(&dev->mode_config.idr_mutex);
5554 idr_remove(&dev->mode_config.tile_idr, tg->id);
5555 mutex_unlock(&dev->mode_config.idr_mutex);
5560 * drm_mode_put_tile_group - drop a reference to a tile group.
5562 * @tg: tile group to drop reference to.
5564 * drop reference to tile group and free if 0.
5566 void drm_mode_put_tile_group(struct drm_device *dev,
5567 struct drm_tile_group *tg)
5569 kref_put(&tg->refcount, drm_tile_group_free);
5573 * drm_mode_get_tile_group - get a reference to an existing tile group
5575 * @topology: 8-bytes unique per monitor.
5577 * Use the unique bytes to get a reference to an existing tile group.
5580 * tile group or NULL if not found.
5582 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5585 struct drm_tile_group *tg;
5587 mutex_lock(&dev->mode_config.idr_mutex);
5588 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5589 if (!memcmp(tg->group_data, topology, 8)) {
5590 if (!kref_get_unless_zero(&tg->refcount))
5592 mutex_unlock(&dev->mode_config.idr_mutex);
5596 mutex_unlock(&dev->mode_config.idr_mutex);
5601 * drm_mode_create_tile_group - create a tile group from a displayid description
5603 * @topology: 8-bytes unique per monitor.
5605 * Create a tile group for the unique monitor, and get a unique
5606 * identifier for the tile group.
5609 * new tile group or error.
5611 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5614 struct drm_tile_group *tg;
5617 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5619 return ERR_PTR(-ENOMEM);
5621 kref_init(&tg->refcount);
5622 memcpy(tg->group_data, topology, 8);
5625 mutex_lock(&dev->mode_config.idr_mutex);
5626 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5634 mutex_unlock(&dev->mode_config.idr_mutex);