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);
528 static void drm_framebuffer_free_bug(struct kref *kref)
533 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
535 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
536 kref_put(&fb->refcount, drm_framebuffer_free_bug);
540 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
541 * @fb: fb to unregister
543 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
544 * those used for fbdev. Note that the caller must hold a reference of it's own,
545 * i.e. the object may not be destroyed through this call (since it'll lead to a
546 * locking inversion).
548 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
550 struct drm_device *dev = fb->dev;
552 mutex_lock(&dev->mode_config.fb_lock);
553 /* Mark fb as reaped and drop idr ref. */
554 __drm_framebuffer_unregister(dev, fb);
555 mutex_unlock(&dev->mode_config.fb_lock);
557 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
560 * drm_framebuffer_cleanup - remove a framebuffer object
561 * @fb: framebuffer to remove
563 * Cleanup framebuffer. This function is intended to be used from the drivers
564 * ->destroy callback. It can also be used to clean up driver private
565 * framebuffers embedded into a larger structure.
567 * Note that this function does not remove the fb from active usuage - if it is
568 * still used anywhere, hilarity can ensue since userspace could call getfb on
569 * the id and get back -EINVAL. Obviously no concern at driver unload time.
571 * Also, the framebuffer will not be removed from the lookup idr - for
572 * user-created framebuffers this will happen in in the rmfb ioctl. For
573 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
574 * drm_framebuffer_unregister_private.
576 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
578 struct drm_device *dev = fb->dev;
580 mutex_lock(&dev->mode_config.fb_lock);
582 dev->mode_config.num_fb--;
583 mutex_unlock(&dev->mode_config.fb_lock);
585 EXPORT_SYMBOL(drm_framebuffer_cleanup);
588 * drm_framebuffer_remove - remove and unreference a framebuffer object
589 * @fb: framebuffer to remove
591 * Scans all the CRTCs and planes in @dev's mode_config. If they're
592 * using @fb, removes it, setting it to NULL. Then drops the reference to the
593 * passed-in framebuffer. Might take the modeset locks.
595 * Note that this function optimizes the cleanup away if the caller holds the
596 * last reference to the framebuffer. It is also guaranteed to not take the
597 * modeset locks in this case.
599 void drm_framebuffer_remove(struct drm_framebuffer *fb)
601 struct drm_device *dev = fb->dev;
602 struct drm_crtc *crtc;
603 struct drm_plane *plane;
604 struct drm_mode_set set;
607 WARN_ON(!list_empty(&fb->filp_head));
610 * drm ABI mandates that we remove any deleted framebuffers from active
611 * useage. But since most sane clients only remove framebuffers they no
612 * longer need, try to optimize this away.
614 * Since we're holding a reference ourselves, observing a refcount of 1
615 * means that we're the last holder and can skip it. Also, the refcount
616 * can never increase from 1 again, so we don't need any barriers or
619 * Note that userspace could try to race with use and instate a new
620 * usage _after_ we've cleared all current ones. End result will be an
621 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
624 if (atomic_read(&fb->refcount.refcount) > 1) {
625 drm_modeset_lock_all(dev);
626 /* remove from any CRTC */
627 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
628 if (crtc->primary->fb == fb) {
629 /* should turn off the crtc */
630 memset(&set, 0, sizeof(struct drm_mode_set));
633 ret = drm_mode_set_config_internal(&set);
635 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
639 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
641 drm_plane_force_disable(plane);
643 drm_modeset_unlock_all(dev);
646 drm_framebuffer_unreference(fb);
648 EXPORT_SYMBOL(drm_framebuffer_remove);
650 DEFINE_WW_CLASS(crtc_ww_class);
653 * drm_crtc_init_with_planes - Initialise a new CRTC object with
654 * specified primary and cursor planes.
656 * @crtc: CRTC object to init
657 * @primary: Primary plane for CRTC
658 * @cursor: Cursor plane for CRTC
659 * @funcs: callbacks for the new CRTC
661 * Inits a new object created as base part of a driver crtc object.
664 * Zero on success, error code on failure.
666 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
667 struct drm_plane *primary,
668 struct drm_plane *cursor,
669 const struct drm_crtc_funcs *funcs)
671 struct drm_mode_config *config = &dev->mode_config;
676 crtc->invert_dimensions = false;
678 drm_modeset_lock_init(&crtc->mutex);
679 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
683 crtc->base.properties = &crtc->properties;
685 list_add_tail(&crtc->head, &config->crtc_list);
688 crtc->primary = primary;
689 crtc->cursor = cursor;
691 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
693 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
695 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
696 drm_object_attach_property(&crtc->base, config->prop_active, 0);
701 EXPORT_SYMBOL(drm_crtc_init_with_planes);
704 * drm_crtc_cleanup - Clean up the core crtc usage
705 * @crtc: CRTC to cleanup
707 * This function cleans up @crtc and removes it from the DRM mode setting
708 * core. Note that the function does *not* free the crtc structure itself,
709 * this is the responsibility of the caller.
711 void drm_crtc_cleanup(struct drm_crtc *crtc)
713 struct drm_device *dev = crtc->dev;
715 kfree(crtc->gamma_store);
716 crtc->gamma_store = NULL;
718 drm_modeset_lock_fini(&crtc->mutex);
720 drm_mode_object_put(dev, &crtc->base);
721 list_del(&crtc->head);
722 dev->mode_config.num_crtc--;
724 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
725 if (crtc->state && crtc->funcs->atomic_destroy_state)
726 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
728 memset(crtc, 0, sizeof(*crtc));
730 EXPORT_SYMBOL(drm_crtc_cleanup);
733 * drm_crtc_index - find the index of a registered CRTC
734 * @crtc: CRTC to find index for
736 * Given a registered CRTC, return the index of that CRTC within a DRM
737 * device's list of CRTCs.
739 unsigned int drm_crtc_index(struct drm_crtc *crtc)
741 unsigned int index = 0;
742 struct drm_crtc *tmp;
744 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
753 EXPORT_SYMBOL(drm_crtc_index);
756 * drm_mode_remove - remove and free a mode
757 * @connector: connector list to modify
758 * @mode: mode to remove
760 * Remove @mode from @connector's mode list, then free it.
762 static void drm_mode_remove(struct drm_connector *connector,
763 struct drm_display_mode *mode)
765 list_del(&mode->head);
766 drm_mode_destroy(connector->dev, mode);
770 * drm_display_info_set_bus_formats - set the supported bus formats
771 * @info: display info to store bus formats in
772 * @formats: array containing the supported bus formats
773 * @num_formats: the number of entries in the fmts array
775 * Store the supported bus formats in display info structure.
776 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
777 * a full list of available formats.
779 int drm_display_info_set_bus_formats(struct drm_display_info *info,
781 unsigned int num_formats)
785 if (!formats && num_formats)
788 if (formats && num_formats) {
789 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
795 kfree(info->bus_formats);
796 info->bus_formats = fmts;
797 info->num_bus_formats = num_formats;
801 EXPORT_SYMBOL(drm_display_info_set_bus_formats);
804 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
805 * @connector: connector to quwery
807 * The kernel supports per-connector configration of its consoles through
808 * use of the video= parameter. This function parses that option and
809 * extracts the user's specified mode (or enable/disable status) for a
810 * particular connector. This is typically only used during the early fbdev
813 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
815 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
818 if (fb_get_options(connector->name, &option))
821 if (!drm_mode_parse_command_line_for_connector(option,
829 switch (mode->force) {
833 case DRM_FORCE_ON_DIGITAL:
842 DRM_INFO("forcing %s connector %s\n", connector->name, s);
843 connector->force = mode->force;
846 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
848 mode->xres, mode->yres,
849 mode->refresh_specified ? mode->refresh : 60,
850 mode->rb ? " reduced blanking" : "",
851 mode->margins ? " with margins" : "",
852 mode->interlace ? " interlaced" : "");
856 * drm_connector_init - Init a preallocated connector
858 * @connector: the connector to init
859 * @funcs: callbacks for this connector
860 * @connector_type: user visible type of the connector
862 * Initialises a preallocated connector. Connectors should be
863 * subclassed as part of driver connector objects.
866 * Zero on success, error code on failure.
868 int drm_connector_init(struct drm_device *dev,
869 struct drm_connector *connector,
870 const struct drm_connector_funcs *funcs,
873 struct drm_mode_config *config = &dev->mode_config;
875 struct ida *connector_ida =
876 &drm_connector_enum_list[connector_type].ida;
878 drm_modeset_lock_all(dev);
880 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
884 connector->base.properties = &connector->properties;
885 connector->dev = dev;
886 connector->funcs = funcs;
887 connector->connector_type = connector_type;
888 connector->connector_type_id =
889 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
890 if (connector->connector_type_id < 0) {
891 ret = connector->connector_type_id;
895 kasprintf(GFP_KERNEL, "%s-%d",
896 drm_connector_enum_list[connector_type].name,
897 connector->connector_type_id);
898 if (!connector->name) {
903 INIT_LIST_HEAD(&connector->probed_modes);
904 INIT_LIST_HEAD(&connector->modes);
905 connector->edid_blob_ptr = NULL;
906 connector->status = connector_status_unknown;
908 drm_connector_get_cmdline_mode(connector);
910 /* We should add connectors at the end to avoid upsetting the connector
912 list_add_tail(&connector->head, &config->connector_list);
913 config->num_connector++;
915 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
916 drm_object_attach_property(&connector->base,
917 config->edid_property,
920 drm_object_attach_property(&connector->base,
921 config->dpms_property, 0);
923 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
924 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
927 connector->debugfs_entry = NULL;
931 drm_mode_object_put(dev, &connector->base);
934 drm_modeset_unlock_all(dev);
938 EXPORT_SYMBOL(drm_connector_init);
941 * drm_connector_cleanup - cleans up an initialised connector
942 * @connector: connector to cleanup
944 * Cleans up the connector but doesn't free the object.
946 void drm_connector_cleanup(struct drm_connector *connector)
948 struct drm_device *dev = connector->dev;
949 struct drm_display_mode *mode, *t;
951 if (connector->tile_group) {
952 drm_mode_put_tile_group(dev, connector->tile_group);
953 connector->tile_group = NULL;
956 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
957 drm_mode_remove(connector, mode);
959 list_for_each_entry_safe(mode, t, &connector->modes, head)
960 drm_mode_remove(connector, mode);
962 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
963 connector->connector_type_id);
965 kfree(connector->display_info.bus_formats);
966 drm_mode_object_put(dev, &connector->base);
967 kfree(connector->name);
968 connector->name = NULL;
969 list_del(&connector->head);
970 dev->mode_config.num_connector--;
972 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
973 if (connector->state && connector->funcs->atomic_destroy_state)
974 connector->funcs->atomic_destroy_state(connector,
977 memset(connector, 0, sizeof(*connector));
979 EXPORT_SYMBOL(drm_connector_cleanup);
982 * drm_connector_index - find the index of a registered connector
983 * @connector: connector to find index for
985 * Given a registered connector, return the index of that connector within a DRM
986 * device's list of connectors.
988 unsigned int drm_connector_index(struct drm_connector *connector)
990 unsigned int index = 0;
991 struct drm_connector *tmp;
992 struct drm_mode_config *config = &connector->dev->mode_config;
994 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
996 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
997 if (tmp == connector)
1005 EXPORT_SYMBOL(drm_connector_index);
1008 * drm_connector_register - register a connector
1009 * @connector: the connector to register
1011 * Register userspace interfaces for a connector
1014 * Zero on success, error code on failure.
1016 int drm_connector_register(struct drm_connector *connector)
1020 drm_mode_object_register(connector->dev, &connector->base);
1022 ret = drm_sysfs_connector_add(connector);
1026 ret = drm_debugfs_connector_add(connector);
1028 drm_sysfs_connector_remove(connector);
1034 EXPORT_SYMBOL(drm_connector_register);
1037 * drm_connector_unregister - unregister a connector
1038 * @connector: the connector to unregister
1040 * Unregister userspace interfaces for a connector
1042 void drm_connector_unregister(struct drm_connector *connector)
1044 drm_sysfs_connector_remove(connector);
1045 drm_debugfs_connector_remove(connector);
1047 EXPORT_SYMBOL(drm_connector_unregister);
1051 * drm_connector_unplug_all - unregister connector userspace interfaces
1054 * This function unregisters all connector userspace interfaces in sysfs. Should
1055 * be call when the device is disconnected, e.g. from an usb driver's
1056 * ->disconnect callback.
1058 void drm_connector_unplug_all(struct drm_device *dev)
1060 struct drm_connector *connector;
1062 /* taking the mode config mutex ends up in a clash with sysfs */
1063 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1064 drm_connector_unregister(connector);
1067 EXPORT_SYMBOL(drm_connector_unplug_all);
1070 * drm_encoder_init - Init a preallocated encoder
1072 * @encoder: the encoder to init
1073 * @funcs: callbacks for this encoder
1074 * @encoder_type: user visible type of the encoder
1076 * Initialises a preallocated encoder. Encoder should be
1077 * subclassed as part of driver encoder objects.
1080 * Zero on success, error code on failure.
1082 int drm_encoder_init(struct drm_device *dev,
1083 struct drm_encoder *encoder,
1084 const struct drm_encoder_funcs *funcs,
1089 drm_modeset_lock_all(dev);
1091 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1096 encoder->encoder_type = encoder_type;
1097 encoder->funcs = funcs;
1098 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1099 drm_encoder_enum_list[encoder_type].name,
1101 if (!encoder->name) {
1106 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1107 dev->mode_config.num_encoder++;
1111 drm_mode_object_put(dev, &encoder->base);
1114 drm_modeset_unlock_all(dev);
1118 EXPORT_SYMBOL(drm_encoder_init);
1121 * drm_encoder_cleanup - cleans up an initialised encoder
1122 * @encoder: encoder to cleanup
1124 * Cleans up the encoder but doesn't free the object.
1126 void drm_encoder_cleanup(struct drm_encoder *encoder)
1128 struct drm_device *dev = encoder->dev;
1130 drm_modeset_lock_all(dev);
1131 drm_mode_object_put(dev, &encoder->base);
1132 kfree(encoder->name);
1133 list_del(&encoder->head);
1134 dev->mode_config.num_encoder--;
1135 drm_modeset_unlock_all(dev);
1137 memset(encoder, 0, sizeof(*encoder));
1139 EXPORT_SYMBOL(drm_encoder_cleanup);
1142 * drm_universal_plane_init - Initialize a new universal plane object
1144 * @plane: plane object to init
1145 * @possible_crtcs: bitmask of possible CRTCs
1146 * @funcs: callbacks for the new plane
1147 * @formats: array of supported formats (%DRM_FORMAT_*)
1148 * @format_count: number of elements in @formats
1149 * @type: type of plane (overlay, primary, cursor)
1151 * Initializes a plane object of type @type.
1154 * Zero on success, error code on failure.
1156 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1157 unsigned long possible_crtcs,
1158 const struct drm_plane_funcs *funcs,
1159 const uint32_t *formats, uint32_t format_count,
1160 enum drm_plane_type type)
1162 struct drm_mode_config *config = &dev->mode_config;
1165 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1169 drm_modeset_lock_init(&plane->mutex);
1171 plane->base.properties = &plane->properties;
1173 plane->funcs = funcs;
1174 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1176 if (!plane->format_types) {
1177 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1178 drm_mode_object_put(dev, &plane->base);
1182 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1183 plane->format_count = format_count;
1184 plane->possible_crtcs = possible_crtcs;
1187 list_add_tail(&plane->head, &config->plane_list);
1188 config->num_total_plane++;
1189 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1190 config->num_overlay_plane++;
1192 drm_object_attach_property(&plane->base,
1193 config->plane_type_property,
1196 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1197 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1198 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1199 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1200 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1201 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1202 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1203 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1204 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1205 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1206 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1211 EXPORT_SYMBOL(drm_universal_plane_init);
1214 * drm_plane_init - Initialize a legacy plane
1216 * @plane: plane object to init
1217 * @possible_crtcs: bitmask of possible CRTCs
1218 * @funcs: callbacks for the new plane
1219 * @formats: array of supported formats (%DRM_FORMAT_*)
1220 * @format_count: number of elements in @formats
1221 * @is_primary: plane type (primary vs overlay)
1223 * Legacy API to initialize a DRM plane.
1225 * New drivers should call drm_universal_plane_init() instead.
1228 * Zero on success, error code on failure.
1230 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1231 unsigned long possible_crtcs,
1232 const struct drm_plane_funcs *funcs,
1233 const uint32_t *formats, uint32_t format_count,
1236 enum drm_plane_type type;
1238 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1239 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1240 formats, format_count, type);
1242 EXPORT_SYMBOL(drm_plane_init);
1245 * drm_plane_cleanup - Clean up the core plane usage
1246 * @plane: plane to cleanup
1248 * This function cleans up @plane and removes it from the DRM mode setting
1249 * core. Note that the function does *not* free the plane structure itself,
1250 * this is the responsibility of the caller.
1252 void drm_plane_cleanup(struct drm_plane *plane)
1254 struct drm_device *dev = plane->dev;
1256 drm_modeset_lock_all(dev);
1257 kfree(plane->format_types);
1258 drm_mode_object_put(dev, &plane->base);
1260 BUG_ON(list_empty(&plane->head));
1262 list_del(&plane->head);
1263 dev->mode_config.num_total_plane--;
1264 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1265 dev->mode_config.num_overlay_plane--;
1266 drm_modeset_unlock_all(dev);
1268 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1269 if (plane->state && plane->funcs->atomic_destroy_state)
1270 plane->funcs->atomic_destroy_state(plane, plane->state);
1272 memset(plane, 0, sizeof(*plane));
1274 EXPORT_SYMBOL(drm_plane_cleanup);
1277 * drm_plane_index - find the index of a registered plane
1278 * @plane: plane to find index for
1280 * Given a registered plane, return the index of that CRTC within a DRM
1281 * device's list of planes.
1283 unsigned int drm_plane_index(struct drm_plane *plane)
1285 unsigned int index = 0;
1286 struct drm_plane *tmp;
1288 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1297 EXPORT_SYMBOL(drm_plane_index);
1300 * drm_plane_force_disable - Forcibly disable a plane
1301 * @plane: plane to disable
1303 * Forces the plane to be disabled.
1305 * Used when the plane's current framebuffer is destroyed,
1306 * and when restoring fbdev mode.
1308 void drm_plane_force_disable(struct drm_plane *plane)
1315 plane->old_fb = plane->fb;
1316 ret = plane->funcs->disable_plane(plane);
1318 DRM_ERROR("failed to disable plane with busy fb\n");
1319 plane->old_fb = NULL;
1322 /* disconnect the plane from the fb and crtc: */
1323 __drm_framebuffer_unreference(plane->old_fb);
1324 plane->old_fb = NULL;
1328 EXPORT_SYMBOL(drm_plane_force_disable);
1330 static int drm_mode_create_standard_properties(struct drm_device *dev)
1332 struct drm_property *prop;
1335 * Standard properties (apply to all connectors)
1337 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1338 DRM_MODE_PROP_IMMUTABLE,
1342 dev->mode_config.edid_property = prop;
1344 prop = drm_property_create_enum(dev, 0,
1345 "DPMS", drm_dpms_enum_list,
1346 ARRAY_SIZE(drm_dpms_enum_list));
1349 dev->mode_config.dpms_property = prop;
1351 prop = drm_property_create(dev,
1352 DRM_MODE_PROP_BLOB |
1353 DRM_MODE_PROP_IMMUTABLE,
1357 dev->mode_config.path_property = prop;
1359 prop = drm_property_create(dev,
1360 DRM_MODE_PROP_BLOB |
1361 DRM_MODE_PROP_IMMUTABLE,
1365 dev->mode_config.tile_property = prop;
1367 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1368 "type", drm_plane_type_enum_list,
1369 ARRAY_SIZE(drm_plane_type_enum_list));
1372 dev->mode_config.plane_type_property = prop;
1374 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1375 "SRC_X", 0, UINT_MAX);
1378 dev->mode_config.prop_src_x = prop;
1380 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1381 "SRC_Y", 0, UINT_MAX);
1384 dev->mode_config.prop_src_y = prop;
1386 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1387 "SRC_W", 0, UINT_MAX);
1390 dev->mode_config.prop_src_w = prop;
1392 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1393 "SRC_H", 0, UINT_MAX);
1396 dev->mode_config.prop_src_h = prop;
1398 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1399 "CRTC_X", INT_MIN, INT_MAX);
1402 dev->mode_config.prop_crtc_x = prop;
1404 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1405 "CRTC_Y", INT_MIN, INT_MAX);
1408 dev->mode_config.prop_crtc_y = prop;
1410 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1411 "CRTC_W", 0, INT_MAX);
1414 dev->mode_config.prop_crtc_w = prop;
1416 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1417 "CRTC_H", 0, INT_MAX);
1420 dev->mode_config.prop_crtc_h = prop;
1422 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1423 "FB_ID", DRM_MODE_OBJECT_FB);
1426 dev->mode_config.prop_fb_id = prop;
1428 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1429 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1432 dev->mode_config.prop_crtc_id = prop;
1434 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1438 dev->mode_config.prop_active = prop;
1444 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1447 * Called by a driver the first time a DVI-I connector is made.
1449 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1451 struct drm_property *dvi_i_selector;
1452 struct drm_property *dvi_i_subconnector;
1454 if (dev->mode_config.dvi_i_select_subconnector_property)
1458 drm_property_create_enum(dev, 0,
1459 "select subconnector",
1460 drm_dvi_i_select_enum_list,
1461 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1462 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1464 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1466 drm_dvi_i_subconnector_enum_list,
1467 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1468 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1472 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1475 * drm_create_tv_properties - create TV specific connector properties
1477 * @num_modes: number of different TV formats (modes) supported
1478 * @modes: array of pointers to strings containing name of each format
1480 * Called by a driver's TV initialization routine, this function creates
1481 * the TV specific connector properties for a given device. Caller is
1482 * responsible for allocating a list of format names and passing them to
1485 int drm_mode_create_tv_properties(struct drm_device *dev,
1486 unsigned int num_modes,
1489 struct drm_property *tv_selector;
1490 struct drm_property *tv_subconnector;
1493 if (dev->mode_config.tv_select_subconnector_property)
1497 * Basic connector properties
1499 tv_selector = drm_property_create_enum(dev, 0,
1500 "select subconnector",
1501 drm_tv_select_enum_list,
1502 ARRAY_SIZE(drm_tv_select_enum_list));
1503 dev->mode_config.tv_select_subconnector_property = tv_selector;
1506 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1508 drm_tv_subconnector_enum_list,
1509 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1510 dev->mode_config.tv_subconnector_property = tv_subconnector;
1513 * Other, TV specific properties: margins & TV modes.
1515 dev->mode_config.tv_left_margin_property =
1516 drm_property_create_range(dev, 0, "left margin", 0, 100);
1518 dev->mode_config.tv_right_margin_property =
1519 drm_property_create_range(dev, 0, "right margin", 0, 100);
1521 dev->mode_config.tv_top_margin_property =
1522 drm_property_create_range(dev, 0, "top margin", 0, 100);
1524 dev->mode_config.tv_bottom_margin_property =
1525 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1527 dev->mode_config.tv_mode_property =
1528 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1530 for (i = 0; i < num_modes; i++)
1531 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1534 dev->mode_config.tv_brightness_property =
1535 drm_property_create_range(dev, 0, "brightness", 0, 100);
1537 dev->mode_config.tv_contrast_property =
1538 drm_property_create_range(dev, 0, "contrast", 0, 100);
1540 dev->mode_config.tv_flicker_reduction_property =
1541 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1543 dev->mode_config.tv_overscan_property =
1544 drm_property_create_range(dev, 0, "overscan", 0, 100);
1546 dev->mode_config.tv_saturation_property =
1547 drm_property_create_range(dev, 0, "saturation", 0, 100);
1549 dev->mode_config.tv_hue_property =
1550 drm_property_create_range(dev, 0, "hue", 0, 100);
1554 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1557 * drm_mode_create_scaling_mode_property - create scaling mode property
1560 * Called by a driver the first time it's needed, must be attached to desired
1563 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1565 struct drm_property *scaling_mode;
1567 if (dev->mode_config.scaling_mode_property)
1571 drm_property_create_enum(dev, 0, "scaling mode",
1572 drm_scaling_mode_enum_list,
1573 ARRAY_SIZE(drm_scaling_mode_enum_list));
1575 dev->mode_config.scaling_mode_property = scaling_mode;
1579 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1582 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1585 * Called by a driver the first time it's needed, must be attached to desired
1589 * Zero on success, negative errno on failure.
1591 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1593 if (dev->mode_config.aspect_ratio_property)
1596 dev->mode_config.aspect_ratio_property =
1597 drm_property_create_enum(dev, 0, "aspect ratio",
1598 drm_aspect_ratio_enum_list,
1599 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1601 if (dev->mode_config.aspect_ratio_property == NULL)
1606 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1609 * drm_mode_create_dirty_property - create dirty property
1612 * Called by a driver the first time it's needed, must be attached to desired
1615 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1617 struct drm_property *dirty_info;
1619 if (dev->mode_config.dirty_info_property)
1623 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1625 drm_dirty_info_enum_list,
1626 ARRAY_SIZE(drm_dirty_info_enum_list));
1627 dev->mode_config.dirty_info_property = dirty_info;
1631 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1634 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1637 * Create the the suggested x/y offset property for connectors.
1639 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1641 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1644 dev->mode_config.suggested_x_property =
1645 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1647 dev->mode_config.suggested_y_property =
1648 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1650 if (dev->mode_config.suggested_x_property == NULL ||
1651 dev->mode_config.suggested_y_property == NULL)
1655 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1657 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1659 uint32_t total_objects = 0;
1661 total_objects += dev->mode_config.num_crtc;
1662 total_objects += dev->mode_config.num_connector;
1663 total_objects += dev->mode_config.num_encoder;
1665 group->id_list = kcalloc(total_objects, sizeof(uint32_t), GFP_KERNEL);
1666 if (!group->id_list)
1669 group->num_crtcs = 0;
1670 group->num_connectors = 0;
1671 group->num_encoders = 0;
1675 void drm_mode_group_destroy(struct drm_mode_group *group)
1677 kfree(group->id_list);
1678 group->id_list = NULL;
1682 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1683 * the drm core's responsibility to set up mode control groups.
1685 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1686 struct drm_mode_group *group)
1688 struct drm_crtc *crtc;
1689 struct drm_encoder *encoder;
1690 struct drm_connector *connector;
1693 ret = drm_mode_group_init(dev, group);
1697 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1698 group->id_list[group->num_crtcs++] = crtc->base.id;
1700 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1701 group->id_list[group->num_crtcs + group->num_encoders++] =
1704 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1705 group->id_list[group->num_crtcs + group->num_encoders +
1706 group->num_connectors++] = connector->base.id;
1710 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1712 void drm_reinit_primary_mode_group(struct drm_device *dev)
1714 drm_modeset_lock_all(dev);
1715 drm_mode_group_destroy(&dev->primary->mode_group);
1716 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1717 drm_modeset_unlock_all(dev);
1719 EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1722 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1723 * @out: drm_mode_modeinfo struct to return to the user
1724 * @in: drm_display_mode to use
1726 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1729 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1730 const struct drm_display_mode *in)
1732 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1733 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1734 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1735 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1736 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1737 "timing values too large for mode info\n");
1739 out->clock = in->clock;
1740 out->hdisplay = in->hdisplay;
1741 out->hsync_start = in->hsync_start;
1742 out->hsync_end = in->hsync_end;
1743 out->htotal = in->htotal;
1744 out->hskew = in->hskew;
1745 out->vdisplay = in->vdisplay;
1746 out->vsync_start = in->vsync_start;
1747 out->vsync_end = in->vsync_end;
1748 out->vtotal = in->vtotal;
1749 out->vscan = in->vscan;
1750 out->vrefresh = in->vrefresh;
1751 out->flags = in->flags;
1752 out->type = in->type;
1753 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1754 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1758 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1759 * @out: drm_display_mode to return to the user
1760 * @in: drm_mode_modeinfo to use
1762 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1766 * Zero on success, negative errno on failure.
1768 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1769 const struct drm_mode_modeinfo *in)
1771 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1774 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1777 out->clock = in->clock;
1778 out->hdisplay = in->hdisplay;
1779 out->hsync_start = in->hsync_start;
1780 out->hsync_end = in->hsync_end;
1781 out->htotal = in->htotal;
1782 out->hskew = in->hskew;
1783 out->vdisplay = in->vdisplay;
1784 out->vsync_start = in->vsync_start;
1785 out->vsync_end = in->vsync_end;
1786 out->vtotal = in->vtotal;
1787 out->vscan = in->vscan;
1788 out->vrefresh = in->vrefresh;
1789 out->flags = in->flags;
1790 out->type = in->type;
1791 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1792 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1798 * drm_mode_getresources - get graphics configuration
1799 * @dev: drm device for the ioctl
1800 * @data: data pointer for the ioctl
1801 * @file_priv: drm file for the ioctl call
1803 * Construct a set of configuration description structures and return
1804 * them to the user, including CRTC, connector and framebuffer configuration.
1806 * Called by the user via ioctl.
1809 * Zero on success, negative errno on failure.
1811 int drm_mode_getresources(struct drm_device *dev, void *data,
1812 struct drm_file *file_priv)
1814 struct drm_mode_card_res *card_res = data;
1815 struct list_head *lh;
1816 struct drm_framebuffer *fb;
1817 struct drm_connector *connector;
1818 struct drm_crtc *crtc;
1819 struct drm_encoder *encoder;
1821 int connector_count = 0;
1824 int encoder_count = 0;
1826 uint32_t __user *fb_id;
1827 uint32_t __user *crtc_id;
1828 uint32_t __user *connector_id;
1829 uint32_t __user *encoder_id;
1830 struct drm_mode_group *mode_group;
1832 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1836 mutex_lock(&file_priv->fbs_lock);
1838 * For the non-control nodes we need to limit the list of resources
1839 * by IDs in the group list for this node
1841 list_for_each(lh, &file_priv->fbs)
1844 /* handle this in 4 parts */
1846 if (card_res->count_fbs >= fb_count) {
1848 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1849 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1850 if (put_user(fb->base.id, fb_id + copied)) {
1851 mutex_unlock(&file_priv->fbs_lock);
1857 card_res->count_fbs = fb_count;
1858 mutex_unlock(&file_priv->fbs_lock);
1860 /* mode_config.mutex protects the connector list against e.g. DP MST
1861 * connector hot-adding. CRTC/Plane lists are invariant. */
1862 mutex_lock(&dev->mode_config.mutex);
1863 if (!drm_is_primary_client(file_priv)) {
1866 list_for_each(lh, &dev->mode_config.crtc_list)
1869 list_for_each(lh, &dev->mode_config.connector_list)
1872 list_for_each(lh, &dev->mode_config.encoder_list)
1876 mode_group = &file_priv->master->minor->mode_group;
1877 crtc_count = mode_group->num_crtcs;
1878 connector_count = mode_group->num_connectors;
1879 encoder_count = mode_group->num_encoders;
1882 card_res->max_height = dev->mode_config.max_height;
1883 card_res->min_height = dev->mode_config.min_height;
1884 card_res->max_width = dev->mode_config.max_width;
1885 card_res->min_width = dev->mode_config.min_width;
1888 if (card_res->count_crtcs >= crtc_count) {
1890 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1892 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1894 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1895 if (put_user(crtc->base.id, crtc_id + copied)) {
1902 for (i = 0; i < mode_group->num_crtcs; i++) {
1903 if (put_user(mode_group->id_list[i],
1904 crtc_id + copied)) {
1912 card_res->count_crtcs = crtc_count;
1915 if (card_res->count_encoders >= encoder_count) {
1917 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1919 list_for_each_entry(encoder,
1920 &dev->mode_config.encoder_list,
1922 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1924 if (put_user(encoder->base.id, encoder_id +
1932 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1933 if (put_user(mode_group->id_list[i],
1934 encoder_id + copied)) {
1943 card_res->count_encoders = encoder_count;
1946 if (card_res->count_connectors >= connector_count) {
1948 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1950 list_for_each_entry(connector,
1951 &dev->mode_config.connector_list,
1953 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1956 if (put_user(connector->base.id,
1957 connector_id + copied)) {
1964 int start = mode_group->num_crtcs +
1965 mode_group->num_encoders;
1966 for (i = start; i < start + mode_group->num_connectors; i++) {
1967 if (put_user(mode_group->id_list[i],
1968 connector_id + copied)) {
1976 card_res->count_connectors = connector_count;
1978 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1979 card_res->count_connectors, card_res->count_encoders);
1982 mutex_unlock(&dev->mode_config.mutex);
1987 * drm_mode_getcrtc - get CRTC configuration
1988 * @dev: drm device for the ioctl
1989 * @data: data pointer for the ioctl
1990 * @file_priv: drm file for the ioctl call
1992 * Construct a CRTC configuration structure to return to the user.
1994 * Called by the user via ioctl.
1997 * Zero on success, negative errno on failure.
1999 int drm_mode_getcrtc(struct drm_device *dev,
2000 void *data, struct drm_file *file_priv)
2002 struct drm_mode_crtc *crtc_resp = data;
2003 struct drm_crtc *crtc;
2005 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2008 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
2012 drm_modeset_lock_crtc(crtc, crtc->primary);
2013 crtc_resp->x = crtc->x;
2014 crtc_resp->y = crtc->y;
2015 crtc_resp->gamma_size = crtc->gamma_size;
2016 if (crtc->primary->fb)
2017 crtc_resp->fb_id = crtc->primary->fb->base.id;
2019 crtc_resp->fb_id = 0;
2021 if (crtc->enabled) {
2023 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
2024 crtc_resp->mode_valid = 1;
2027 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;
2278 else if (encoder->crtc)
2279 enc_resp->crtc_id = encoder->crtc->base.id;
2281 enc_resp->crtc_id = 0;
2282 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2284 enc_resp->encoder_type = encoder->encoder_type;
2285 enc_resp->encoder_id = encoder->base.id;
2286 enc_resp->possible_crtcs = encoder->possible_crtcs;
2287 enc_resp->possible_clones = encoder->possible_clones;
2293 * drm_mode_getplane_res - enumerate all plane resources
2296 * @file_priv: DRM file info
2298 * Construct a list of plane ids to return to the user.
2300 * Called by the user via ioctl.
2303 * Zero on success, negative errno on failure.
2305 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2306 struct drm_file *file_priv)
2308 struct drm_mode_get_plane_res *plane_resp = data;
2309 struct drm_mode_config *config;
2310 struct drm_plane *plane;
2311 uint32_t __user *plane_ptr;
2313 unsigned num_planes;
2315 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2318 config = &dev->mode_config;
2320 if (file_priv->universal_planes)
2321 num_planes = config->num_total_plane;
2323 num_planes = config->num_overlay_plane;
2326 * This ioctl is called twice, once to determine how much space is
2327 * needed, and the 2nd time to fill it.
2330 (plane_resp->count_planes >= num_planes)) {
2331 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2333 /* Plane lists are invariant, no locking needed. */
2334 list_for_each_entry(plane, &config->plane_list, head) {
2336 * Unless userspace set the 'universal planes'
2337 * capability bit, only advertise overlays.
2339 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2340 !file_priv->universal_planes)
2343 if (put_user(plane->base.id, plane_ptr + copied))
2348 plane_resp->count_planes = num_planes;
2354 * drm_mode_getplane - get plane configuration
2357 * @file_priv: DRM file info
2359 * Construct a plane configuration structure to return to the user.
2361 * Called by the user via ioctl.
2364 * Zero on success, negative errno on failure.
2366 int drm_mode_getplane(struct drm_device *dev, void *data,
2367 struct drm_file *file_priv)
2369 struct drm_mode_get_plane *plane_resp = data;
2370 struct drm_plane *plane;
2371 uint32_t __user *format_ptr;
2373 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2376 plane = drm_plane_find(dev, plane_resp->plane_id);
2380 drm_modeset_lock(&plane->mutex, NULL);
2382 plane_resp->crtc_id = plane->crtc->base.id;
2384 plane_resp->crtc_id = 0;
2387 plane_resp->fb_id = plane->fb->base.id;
2389 plane_resp->fb_id = 0;
2390 drm_modeset_unlock(&plane->mutex);
2392 plane_resp->plane_id = plane->base.id;
2393 plane_resp->possible_crtcs = plane->possible_crtcs;
2394 plane_resp->gamma_size = 0;
2397 * This ioctl is called twice, once to determine how much space is
2398 * needed, and the 2nd time to fill it.
2400 if (plane->format_count &&
2401 (plane_resp->count_format_types >= plane->format_count)) {
2402 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2403 if (copy_to_user(format_ptr,
2404 plane->format_types,
2405 sizeof(uint32_t) * plane->format_count)) {
2409 plane_resp->count_format_types = plane->format_count;
2415 * setplane_internal - setplane handler for internal callers
2417 * Note that we assume an extra reference has already been taken on fb. If the
2418 * update fails, this reference will be dropped before return; if it succeeds,
2419 * the previous framebuffer (if any) will be unreferenced instead.
2421 * src_{x,y,w,h} are provided in 16.16 fixed point format
2423 static int __setplane_internal(struct drm_plane *plane,
2424 struct drm_crtc *crtc,
2425 struct drm_framebuffer *fb,
2426 int32_t crtc_x, int32_t crtc_y,
2427 uint32_t crtc_w, uint32_t crtc_h,
2428 /* src_{x,y,w,h} values are 16.16 fixed point */
2429 uint32_t src_x, uint32_t src_y,
2430 uint32_t src_w, uint32_t src_h)
2433 unsigned int fb_width, fb_height;
2436 /* No fb means shut it down */
2438 plane->old_fb = plane->fb;
2439 ret = plane->funcs->disable_plane(plane);
2444 plane->old_fb = NULL;
2449 /* Check whether this plane is usable on this CRTC */
2450 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2451 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2456 /* Check whether this plane supports the fb pixel format. */
2457 for (i = 0; i < plane->format_count; i++)
2458 if (fb->pixel_format == plane->format_types[i])
2460 if (i == plane->format_count) {
2461 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2462 drm_get_format_name(fb->pixel_format));
2467 fb_width = fb->width << 16;
2468 fb_height = fb->height << 16;
2470 /* Make sure source coordinates are inside the fb. */
2471 if (src_w > fb_width ||
2472 src_x > fb_width - src_w ||
2473 src_h > fb_height ||
2474 src_y > fb_height - src_h) {
2475 DRM_DEBUG_KMS("Invalid source coordinates "
2476 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2477 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2478 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2479 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2480 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2485 plane->old_fb = plane->fb;
2486 ret = plane->funcs->update_plane(plane, crtc, fb,
2487 crtc_x, crtc_y, crtc_w, crtc_h,
2488 src_x, src_y, src_w, src_h);
2494 plane->old_fb = NULL;
2499 drm_framebuffer_unreference(fb);
2501 drm_framebuffer_unreference(plane->old_fb);
2502 plane->old_fb = NULL;
2507 static int setplane_internal(struct drm_plane *plane,
2508 struct drm_crtc *crtc,
2509 struct drm_framebuffer *fb,
2510 int32_t crtc_x, int32_t crtc_y,
2511 uint32_t crtc_w, uint32_t crtc_h,
2512 /* src_{x,y,w,h} values are 16.16 fixed point */
2513 uint32_t src_x, uint32_t src_y,
2514 uint32_t src_w, uint32_t src_h)
2518 drm_modeset_lock_all(plane->dev);
2519 ret = __setplane_internal(plane, crtc, fb,
2520 crtc_x, crtc_y, crtc_w, crtc_h,
2521 src_x, src_y, src_w, src_h);
2522 drm_modeset_unlock_all(plane->dev);
2528 * drm_mode_setplane - configure a plane's configuration
2530 * @data: ioctl data*
2531 * @file_priv: DRM file info
2533 * Set plane configuration, including placement, fb, scaling, and other factors.
2534 * Or pass a NULL fb to disable (planes may be disabled without providing a
2538 * Zero on success, negative errno on failure.
2540 int drm_mode_setplane(struct drm_device *dev, void *data,
2541 struct drm_file *file_priv)
2543 struct drm_mode_set_plane *plane_req = data;
2544 struct drm_plane *plane;
2545 struct drm_crtc *crtc = NULL;
2546 struct drm_framebuffer *fb = NULL;
2548 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2551 /* Give drivers some help against integer overflows */
2552 if (plane_req->crtc_w > INT_MAX ||
2553 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2554 plane_req->crtc_h > INT_MAX ||
2555 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2556 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2557 plane_req->crtc_w, plane_req->crtc_h,
2558 plane_req->crtc_x, plane_req->crtc_y);
2563 * First, find the plane, crtc, and fb objects. If not available,
2564 * we don't bother to call the driver.
2566 plane = drm_plane_find(dev, plane_req->plane_id);
2568 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2569 plane_req->plane_id);
2573 if (plane_req->fb_id) {
2574 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2576 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2581 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2583 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2584 plane_req->crtc_id);
2590 * setplane_internal will take care of deref'ing either the old or new
2591 * framebuffer depending on success.
2593 return setplane_internal(plane, crtc, fb,
2594 plane_req->crtc_x, plane_req->crtc_y,
2595 plane_req->crtc_w, plane_req->crtc_h,
2596 plane_req->src_x, plane_req->src_y,
2597 plane_req->src_w, plane_req->src_h);
2601 * drm_mode_set_config_internal - helper to call ->set_config
2602 * @set: modeset config to set
2604 * This is a little helper to wrap internal calls to the ->set_config driver
2605 * interface. The only thing it adds is correct refcounting dance.
2608 * Zero on success, negative errno on failure.
2610 int drm_mode_set_config_internal(struct drm_mode_set *set)
2612 struct drm_crtc *crtc = set->crtc;
2613 struct drm_framebuffer *fb;
2614 struct drm_crtc *tmp;
2618 * NOTE: ->set_config can also disable other crtcs (if we steal all
2619 * connectors from it), hence we need to refcount the fbs across all
2620 * crtcs. Atomic modeset will have saner semantics ...
2622 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2623 tmp->primary->old_fb = tmp->primary->fb;
2627 ret = crtc->funcs->set_config(set);
2629 crtc->primary->crtc = crtc;
2630 crtc->primary->fb = fb;
2633 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2634 if (tmp->primary->fb)
2635 drm_framebuffer_reference(tmp->primary->fb);
2636 if (tmp->primary->old_fb)
2637 drm_framebuffer_unreference(tmp->primary->old_fb);
2638 tmp->primary->old_fb = NULL;
2643 EXPORT_SYMBOL(drm_mode_set_config_internal);
2646 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2647 * @mode: mode to query
2648 * @hdisplay: hdisplay value to fill in
2649 * @vdisplay: vdisplay value to fill in
2651 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2652 * the appropriate layout.
2654 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2655 int *hdisplay, int *vdisplay)
2657 struct drm_display_mode adjusted;
2659 drm_mode_copy(&adjusted, mode);
2660 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2661 *hdisplay = adjusted.crtc_hdisplay;
2662 *vdisplay = adjusted.crtc_vdisplay;
2664 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2667 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2669 * @crtc: CRTC that framebuffer will be displayed on
2672 * @mode: mode that framebuffer will be displayed under
2673 * @fb: framebuffer to check size of
2675 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2677 const struct drm_display_mode *mode,
2678 const struct drm_framebuffer *fb)
2681 int hdisplay, vdisplay;
2683 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2685 if (crtc->invert_dimensions)
2686 swap(hdisplay, vdisplay);
2688 if (hdisplay > fb->width ||
2689 vdisplay > fb->height ||
2690 x > fb->width - hdisplay ||
2691 y > fb->height - vdisplay) {
2692 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2693 fb->width, fb->height, hdisplay, vdisplay, x, y,
2694 crtc->invert_dimensions ? " (inverted)" : "");
2700 EXPORT_SYMBOL(drm_crtc_check_viewport);
2703 * drm_mode_setcrtc - set CRTC configuration
2704 * @dev: drm device for the ioctl
2705 * @data: data pointer for the ioctl
2706 * @file_priv: drm file for the ioctl call
2708 * Build a new CRTC configuration based on user request.
2710 * Called by the user via ioctl.
2713 * Zero on success, negative errno on failure.
2715 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2716 struct drm_file *file_priv)
2718 struct drm_mode_config *config = &dev->mode_config;
2719 struct drm_mode_crtc *crtc_req = data;
2720 struct drm_crtc *crtc;
2721 struct drm_connector **connector_set = NULL, *connector;
2722 struct drm_framebuffer *fb = NULL;
2723 struct drm_display_mode *mode = NULL;
2724 struct drm_mode_set set;
2725 uint32_t __user *set_connectors_ptr;
2729 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2732 /* For some reason crtc x/y offsets are signed internally. */
2733 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2736 drm_modeset_lock_all(dev);
2737 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2739 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2743 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2745 if (crtc_req->mode_valid) {
2746 /* If we have a mode we need a framebuffer. */
2747 /* If we pass -1, set the mode with the currently bound fb */
2748 if (crtc_req->fb_id == -1) {
2749 if (!crtc->primary->fb) {
2750 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2754 fb = crtc->primary->fb;
2755 /* Make refcounting symmetric with the lookup path. */
2756 drm_framebuffer_reference(fb);
2758 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2760 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2767 mode = drm_mode_create(dev);
2773 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2775 DRM_DEBUG_KMS("Invalid mode\n");
2779 mode->status = drm_mode_validate_basic(mode);
2780 if (mode->status != MODE_OK) {
2785 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2787 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2794 if (crtc_req->count_connectors == 0 && mode) {
2795 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2800 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2801 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2802 crtc_req->count_connectors);
2807 if (crtc_req->count_connectors > 0) {
2810 /* Avoid unbounded kernel memory allocation */
2811 if (crtc_req->count_connectors > config->num_connector) {
2816 connector_set = kmalloc_array(crtc_req->count_connectors,
2817 sizeof(struct drm_connector *),
2819 if (!connector_set) {
2824 for (i = 0; i < crtc_req->count_connectors; i++) {
2825 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2826 if (get_user(out_id, &set_connectors_ptr[i])) {
2831 connector = drm_connector_find(dev, out_id);
2833 DRM_DEBUG_KMS("Connector id %d unknown\n",
2838 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2842 connector_set[i] = connector;
2847 set.x = crtc_req->x;
2848 set.y = crtc_req->y;
2850 set.connectors = connector_set;
2851 set.num_connectors = crtc_req->count_connectors;
2853 ret = drm_mode_set_config_internal(&set);
2857 drm_framebuffer_unreference(fb);
2859 kfree(connector_set);
2860 drm_mode_destroy(dev, mode);
2861 drm_modeset_unlock_all(dev);
2866 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2867 * universal plane handler call
2868 * @crtc: crtc to update cursor for
2869 * @req: data pointer for the ioctl
2870 * @file_priv: drm file for the ioctl call
2872 * Legacy cursor ioctl's work directly with driver buffer handles. To
2873 * translate legacy ioctl calls into universal plane handler calls, we need to
2874 * wrap the native buffer handle in a drm_framebuffer.
2876 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2877 * buffer with a pitch of 4*width; the universal plane interface should be used
2878 * directly in cases where the hardware can support other buffer settings and
2879 * userspace wants to make use of these capabilities.
2882 * Zero on success, negative errno on failure.
2884 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2885 struct drm_mode_cursor2 *req,
2886 struct drm_file *file_priv)
2888 struct drm_device *dev = crtc->dev;
2889 struct drm_framebuffer *fb = NULL;
2890 struct drm_mode_fb_cmd2 fbreq = {
2891 .width = req->width,
2892 .height = req->height,
2893 .pixel_format = DRM_FORMAT_ARGB8888,
2894 .pitches = { req->width * 4 },
2895 .handles = { req->handle },
2897 int32_t crtc_x, crtc_y;
2898 uint32_t crtc_w = 0, crtc_h = 0;
2899 uint32_t src_w = 0, src_h = 0;
2902 BUG_ON(!crtc->cursor);
2903 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2906 * Obtain fb we'll be using (either new or existing) and take an extra
2907 * reference to it if fb != null. setplane will take care of dropping
2908 * the reference if the plane update fails.
2910 if (req->flags & DRM_MODE_CURSOR_BO) {
2912 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
2914 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2921 fb = crtc->cursor->fb;
2923 drm_framebuffer_reference(fb);
2926 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2930 crtc_x = crtc->cursor_x;
2931 crtc_y = crtc->cursor_y;
2936 crtc_h = fb->height;
2937 src_w = fb->width << 16;
2938 src_h = fb->height << 16;
2942 * setplane_internal will take care of deref'ing either the old or new
2943 * framebuffer depending on success.
2945 ret = __setplane_internal(crtc->cursor, crtc, fb,
2946 crtc_x, crtc_y, crtc_w, crtc_h,
2947 0, 0, src_w, src_h);
2949 /* Update successful; save new cursor position, if necessary */
2950 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2951 crtc->cursor_x = req->x;
2952 crtc->cursor_y = req->y;
2958 static int drm_mode_cursor_common(struct drm_device *dev,
2959 struct drm_mode_cursor2 *req,
2960 struct drm_file *file_priv)
2962 struct drm_crtc *crtc;
2965 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2968 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2971 crtc = drm_crtc_find(dev, req->crtc_id);
2973 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2978 * If this crtc has a universal cursor plane, call that plane's update
2979 * handler rather than using legacy cursor handlers.
2981 drm_modeset_lock_crtc(crtc, crtc->cursor);
2983 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2987 if (req->flags & DRM_MODE_CURSOR_BO) {
2988 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2992 /* Turns off the cursor if handle is 0 */
2993 if (crtc->funcs->cursor_set2)
2994 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2995 req->width, req->height, req->hot_x, req->hot_y);
2997 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2998 req->width, req->height);
3001 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3002 if (crtc->funcs->cursor_move) {
3003 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3010 drm_modeset_unlock_crtc(crtc);
3018 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3019 * @dev: drm device for the ioctl
3020 * @data: data pointer for the ioctl
3021 * @file_priv: drm file for the ioctl call
3023 * Set the cursor configuration based on user request.
3025 * Called by the user via ioctl.
3028 * Zero on success, negative errno on failure.
3030 int drm_mode_cursor_ioctl(struct drm_device *dev,
3031 void *data, struct drm_file *file_priv)
3033 struct drm_mode_cursor *req = data;
3034 struct drm_mode_cursor2 new_req;
3036 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3037 new_req.hot_x = new_req.hot_y = 0;
3039 return drm_mode_cursor_common(dev, &new_req, file_priv);
3043 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3044 * @dev: drm device for the ioctl
3045 * @data: data pointer for the ioctl
3046 * @file_priv: drm file for the ioctl call
3048 * Set the cursor configuration based on user request. This implements the 2nd
3049 * version of the cursor ioctl, which allows userspace to additionally specify
3050 * the hotspot of the pointer.
3052 * Called by the user via ioctl.
3055 * Zero on success, negative errno on failure.
3057 int drm_mode_cursor2_ioctl(struct drm_device *dev,
3058 void *data, struct drm_file *file_priv)
3060 struct drm_mode_cursor2 *req = data;
3062 return drm_mode_cursor_common(dev, req, file_priv);
3066 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3067 * @bpp: bits per pixels
3068 * @depth: bit depth per pixel
3070 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3071 * Useful in fbdev emulation code, since that deals in those values.
3073 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3079 fmt = DRM_FORMAT_C8;
3083 fmt = DRM_FORMAT_XRGB1555;
3085 fmt = DRM_FORMAT_RGB565;
3088 fmt = DRM_FORMAT_RGB888;
3092 fmt = DRM_FORMAT_XRGB8888;
3093 else if (depth == 30)
3094 fmt = DRM_FORMAT_XRGB2101010;
3096 fmt = DRM_FORMAT_ARGB8888;
3099 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3100 fmt = DRM_FORMAT_XRGB8888;
3106 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3109 * drm_mode_addfb - add an FB to the graphics configuration
3110 * @dev: drm device for the ioctl
3111 * @data: data pointer for the ioctl
3112 * @file_priv: drm file for the ioctl call
3114 * Add a new FB to the specified CRTC, given a user request. This is the
3115 * original addfb ioctl which only supported RGB formats.
3117 * Called by the user via ioctl.
3120 * Zero on success, negative errno on failure.
3122 int drm_mode_addfb(struct drm_device *dev,
3123 void *data, struct drm_file *file_priv)
3125 struct drm_mode_fb_cmd *or = data;
3126 struct drm_mode_fb_cmd2 r = {};
3129 /* convert to new format and call new ioctl */
3130 r.fb_id = or->fb_id;
3131 r.width = or->width;
3132 r.height = or->height;
3133 r.pitches[0] = or->pitch;
3134 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3135 r.handles[0] = or->handle;
3137 ret = drm_mode_addfb2(dev, &r, file_priv);
3141 or->fb_id = r.fb_id;
3146 static int format_check(const struct drm_mode_fb_cmd2 *r)
3148 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3152 case DRM_FORMAT_RGB332:
3153 case DRM_FORMAT_BGR233:
3154 case DRM_FORMAT_XRGB4444:
3155 case DRM_FORMAT_XBGR4444:
3156 case DRM_FORMAT_RGBX4444:
3157 case DRM_FORMAT_BGRX4444:
3158 case DRM_FORMAT_ARGB4444:
3159 case DRM_FORMAT_ABGR4444:
3160 case DRM_FORMAT_RGBA4444:
3161 case DRM_FORMAT_BGRA4444:
3162 case DRM_FORMAT_XRGB1555:
3163 case DRM_FORMAT_XBGR1555:
3164 case DRM_FORMAT_RGBX5551:
3165 case DRM_FORMAT_BGRX5551:
3166 case DRM_FORMAT_ARGB1555:
3167 case DRM_FORMAT_ABGR1555:
3168 case DRM_FORMAT_RGBA5551:
3169 case DRM_FORMAT_BGRA5551:
3170 case DRM_FORMAT_RGB565:
3171 case DRM_FORMAT_BGR565:
3172 case DRM_FORMAT_RGB888:
3173 case DRM_FORMAT_BGR888:
3174 case DRM_FORMAT_XRGB8888:
3175 case DRM_FORMAT_XBGR8888:
3176 case DRM_FORMAT_RGBX8888:
3177 case DRM_FORMAT_BGRX8888:
3178 case DRM_FORMAT_ARGB8888:
3179 case DRM_FORMAT_ABGR8888:
3180 case DRM_FORMAT_RGBA8888:
3181 case DRM_FORMAT_BGRA8888:
3182 case DRM_FORMAT_XRGB2101010:
3183 case DRM_FORMAT_XBGR2101010:
3184 case DRM_FORMAT_RGBX1010102:
3185 case DRM_FORMAT_BGRX1010102:
3186 case DRM_FORMAT_ARGB2101010:
3187 case DRM_FORMAT_ABGR2101010:
3188 case DRM_FORMAT_RGBA1010102:
3189 case DRM_FORMAT_BGRA1010102:
3190 case DRM_FORMAT_YUYV:
3191 case DRM_FORMAT_YVYU:
3192 case DRM_FORMAT_UYVY:
3193 case DRM_FORMAT_VYUY:
3194 case DRM_FORMAT_AYUV:
3195 case DRM_FORMAT_NV12:
3196 case DRM_FORMAT_NV21:
3197 case DRM_FORMAT_NV16:
3198 case DRM_FORMAT_NV61:
3199 case DRM_FORMAT_NV24:
3200 case DRM_FORMAT_NV42:
3201 case DRM_FORMAT_YUV410:
3202 case DRM_FORMAT_YVU410:
3203 case DRM_FORMAT_YUV411:
3204 case DRM_FORMAT_YVU411:
3205 case DRM_FORMAT_YUV420:
3206 case DRM_FORMAT_YVU420:
3207 case DRM_FORMAT_YUV422:
3208 case DRM_FORMAT_YVU422:
3209 case DRM_FORMAT_YUV444:
3210 case DRM_FORMAT_YVU444:
3213 DRM_DEBUG_KMS("invalid pixel format %s\n",
3214 drm_get_format_name(r->pixel_format));
3219 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3221 int ret, hsub, vsub, num_planes, i;
3223 ret = format_check(r);
3225 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3226 drm_get_format_name(r->pixel_format));
3230 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3231 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3232 num_planes = drm_format_num_planes(r->pixel_format);
3234 if (r->width == 0 || r->width % hsub) {
3235 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3239 if (r->height == 0 || r->height % vsub) {
3240 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3244 for (i = 0; i < num_planes; i++) {
3245 unsigned int width = r->width / (i != 0 ? hsub : 1);
3246 unsigned int height = r->height / (i != 0 ? vsub : 1);
3247 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3249 if (!r->handles[i]) {
3250 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3254 if ((uint64_t) width * cpp > UINT_MAX)
3257 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3260 if (r->pitches[i] < width * cpp) {
3261 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3269 static struct drm_framebuffer *
3270 internal_framebuffer_create(struct drm_device *dev,
3271 struct drm_mode_fb_cmd2 *r,
3272 struct drm_file *file_priv)
3274 struct drm_mode_config *config = &dev->mode_config;
3275 struct drm_framebuffer *fb;
3278 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3279 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3280 return ERR_PTR(-EINVAL);
3283 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3284 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3285 r->width, config->min_width, config->max_width);
3286 return ERR_PTR(-EINVAL);
3288 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3289 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3290 r->height, config->min_height, config->max_height);
3291 return ERR_PTR(-EINVAL);
3294 ret = framebuffer_check(r);
3296 return ERR_PTR(ret);
3298 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3300 DRM_DEBUG_KMS("could not create framebuffer\n");
3308 * drm_mode_addfb2 - add an FB to the graphics configuration
3309 * @dev: drm device for the ioctl
3310 * @data: data pointer for the ioctl
3311 * @file_priv: drm file for the ioctl call
3313 * Add a new FB to the specified CRTC, given a user request with format. This is
3314 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3315 * and uses fourcc codes as pixel format specifiers.
3317 * Called by the user via ioctl.
3320 * Zero on success, negative errno on failure.
3322 int drm_mode_addfb2(struct drm_device *dev,
3323 void *data, struct drm_file *file_priv)
3325 struct drm_mode_fb_cmd2 *r = data;
3326 struct drm_framebuffer *fb;
3328 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3331 fb = internal_framebuffer_create(dev, r, file_priv);
3335 /* Transfer ownership to the filp for reaping on close */
3337 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3338 mutex_lock(&file_priv->fbs_lock);
3339 r->fb_id = fb->base.id;
3340 list_add(&fb->filp_head, &file_priv->fbs);
3341 mutex_unlock(&file_priv->fbs_lock);
3347 * drm_mode_rmfb - remove an FB from the configuration
3348 * @dev: drm device for the ioctl
3349 * @data: data pointer for the ioctl
3350 * @file_priv: drm file for the ioctl call
3352 * Remove the FB specified by the user.
3354 * Called by the user via ioctl.
3357 * Zero on success, negative errno on failure.
3359 int drm_mode_rmfb(struct drm_device *dev,
3360 void *data, struct drm_file *file_priv)
3362 struct drm_framebuffer *fb = NULL;
3363 struct drm_framebuffer *fbl = NULL;
3364 uint32_t *id = data;
3367 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3370 mutex_lock(&file_priv->fbs_lock);
3371 mutex_lock(&dev->mode_config.fb_lock);
3372 fb = __drm_framebuffer_lookup(dev, *id);
3376 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3382 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3383 __drm_framebuffer_unregister(dev, fb);
3385 list_del_init(&fb->filp_head);
3386 mutex_unlock(&dev->mode_config.fb_lock);
3387 mutex_unlock(&file_priv->fbs_lock);
3389 drm_framebuffer_remove(fb);
3394 mutex_unlock(&dev->mode_config.fb_lock);
3395 mutex_unlock(&file_priv->fbs_lock);
3401 * drm_mode_getfb - get FB info
3402 * @dev: drm device for the ioctl
3403 * @data: data pointer for the ioctl
3404 * @file_priv: drm file for the ioctl call
3406 * Lookup the FB given its ID and return info about it.
3408 * Called by the user via ioctl.
3411 * Zero on success, negative errno on failure.
3413 int drm_mode_getfb(struct drm_device *dev,
3414 void *data, struct drm_file *file_priv)
3416 struct drm_mode_fb_cmd *r = data;
3417 struct drm_framebuffer *fb;
3420 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3423 fb = drm_framebuffer_lookup(dev, r->fb_id);
3427 r->height = fb->height;
3428 r->width = fb->width;
3429 r->depth = fb->depth;
3430 r->bpp = fb->bits_per_pixel;
3431 r->pitch = fb->pitches[0];
3432 if (fb->funcs->create_handle) {
3433 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3434 drm_is_control_client(file_priv)) {
3435 ret = fb->funcs->create_handle(fb, file_priv,
3438 /* GET_FB() is an unprivileged ioctl so we must not
3439 * return a buffer-handle to non-master processes! For
3440 * backwards-compatibility reasons, we cannot make
3441 * GET_FB() privileged, so just return an invalid handle
3442 * for non-masters. */
3450 drm_framebuffer_unreference(fb);
3456 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3457 * @dev: drm device for the ioctl
3458 * @data: data pointer for the ioctl
3459 * @file_priv: drm file for the ioctl call
3461 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3462 * rectangle list. Generic userspace which does frontbuffer rendering must call
3463 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3464 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3466 * Modesetting drivers which always update the frontbuffer do not need to
3467 * implement the corresponding ->dirty framebuffer callback.
3469 * Called by the user via ioctl.
3472 * Zero on success, negative errno on failure.
3474 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3475 void *data, struct drm_file *file_priv)
3477 struct drm_clip_rect __user *clips_ptr;
3478 struct drm_clip_rect *clips = NULL;
3479 struct drm_mode_fb_dirty_cmd *r = data;
3480 struct drm_framebuffer *fb;
3485 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3488 fb = drm_framebuffer_lookup(dev, r->fb_id);
3492 num_clips = r->num_clips;
3493 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3495 if (!num_clips != !clips_ptr) {
3500 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3502 /* If userspace annotates copy, clips must come in pairs */
3503 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3508 if (num_clips && clips_ptr) {
3509 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3513 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3519 ret = copy_from_user(clips, clips_ptr,
3520 num_clips * sizeof(*clips));
3527 if (fb->funcs->dirty) {
3528 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3537 drm_framebuffer_unreference(fb);
3544 * drm_fb_release - remove and free the FBs on this file
3545 * @priv: drm file for the ioctl
3547 * Destroy all the FBs associated with @filp.
3549 * Called by the user via ioctl.
3552 * Zero on success, negative errno on failure.
3554 void drm_fb_release(struct drm_file *priv)
3556 struct drm_device *dev = priv->minor->dev;
3557 struct drm_framebuffer *fb, *tfb;
3560 * When the file gets released that means no one else can access the fb
3561 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3562 * avoid upsetting lockdep since the universal cursor code adds a
3563 * framebuffer while holding mutex locks.
3565 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3566 * locks is impossible here since no one else but this function can get
3569 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3571 mutex_lock(&dev->mode_config.fb_lock);
3572 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3573 __drm_framebuffer_unregister(dev, fb);
3574 mutex_unlock(&dev->mode_config.fb_lock);
3576 list_del_init(&fb->filp_head);
3578 /* This will also drop the fpriv->fbs reference. */
3579 drm_framebuffer_remove(fb);
3584 * drm_property_create - create a new property type
3586 * @flags: flags specifying the property type
3587 * @name: name of the property
3588 * @num_values: number of pre-defined values
3590 * This creates a new generic drm property which can then be attached to a drm
3591 * object with drm_object_attach_property. The returned property object must be
3592 * freed with drm_property_destroy.
3594 * Note that the DRM core keeps a per-device list of properties and that, if
3595 * drm_mode_config_cleanup() is called, it will destroy all properties created
3599 * A pointer to the newly created property on success, NULL on failure.
3601 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3602 const char *name, int num_values)
3604 struct drm_property *property = NULL;
3607 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3611 property->dev = dev;
3614 property->values = kcalloc(num_values, sizeof(uint64_t),
3616 if (!property->values)
3620 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3624 property->flags = flags;
3625 property->num_values = num_values;
3626 INIT_LIST_HEAD(&property->enum_list);
3629 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3630 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3633 list_add_tail(&property->head, &dev->mode_config.property_list);
3635 WARN_ON(!drm_property_type_valid(property));
3639 kfree(property->values);
3643 EXPORT_SYMBOL(drm_property_create);
3646 * drm_property_create_enum - create a new enumeration property type
3648 * @flags: flags specifying the property type
3649 * @name: name of the property
3650 * @props: enumeration lists with property values
3651 * @num_values: number of pre-defined values
3653 * This creates a new generic drm property which can then be attached to a drm
3654 * object with drm_object_attach_property. The returned property object must be
3655 * freed with drm_property_destroy.
3657 * Userspace is only allowed to set one of the predefined values for enumeration
3661 * A pointer to the newly created property on success, NULL on failure.
3663 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3665 const struct drm_prop_enum_list *props,
3668 struct drm_property *property;
3671 flags |= DRM_MODE_PROP_ENUM;
3673 property = drm_property_create(dev, flags, name, num_values);
3677 for (i = 0; i < num_values; i++) {
3678 ret = drm_property_add_enum(property, i,
3682 drm_property_destroy(dev, property);
3689 EXPORT_SYMBOL(drm_property_create_enum);
3692 * drm_property_create_bitmask - create a new bitmask property type
3694 * @flags: flags specifying the property type
3695 * @name: name of the property
3696 * @props: enumeration lists with property bitflags
3697 * @num_props: size of the @props array
3698 * @supported_bits: bitmask of all supported enumeration values
3700 * This creates a new bitmask drm property which can then be attached to a drm
3701 * object with drm_object_attach_property. The returned property object must be
3702 * freed with drm_property_destroy.
3704 * Compared to plain enumeration properties userspace is allowed to set any
3705 * or'ed together combination of the predefined property bitflag values
3708 * A pointer to the newly created property on success, NULL on failure.
3710 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3711 int flags, const char *name,
3712 const struct drm_prop_enum_list *props,
3714 uint64_t supported_bits)
3716 struct drm_property *property;
3717 int i, ret, index = 0;
3718 int num_values = hweight64(supported_bits);
3720 flags |= DRM_MODE_PROP_BITMASK;
3722 property = drm_property_create(dev, flags, name, num_values);
3725 for (i = 0; i < num_props; i++) {
3726 if (!(supported_bits & (1ULL << props[i].type)))
3729 if (WARN_ON(index >= num_values)) {
3730 drm_property_destroy(dev, property);
3734 ret = drm_property_add_enum(property, index++,
3738 drm_property_destroy(dev, property);
3745 EXPORT_SYMBOL(drm_property_create_bitmask);
3747 static struct drm_property *property_create_range(struct drm_device *dev,
3748 int flags, const char *name,
3749 uint64_t min, uint64_t max)
3751 struct drm_property *property;
3753 property = drm_property_create(dev, flags, name, 2);
3757 property->values[0] = min;
3758 property->values[1] = max;
3764 * drm_property_create_range - create a new unsigned ranged property type
3766 * @flags: flags specifying the property type
3767 * @name: name of the property
3768 * @min: minimum value of the property
3769 * @max: maximum value of the property
3771 * This creates a new generic drm property which can then be attached to a drm
3772 * object with drm_object_attach_property. The returned property object must be
3773 * freed with drm_property_destroy.
3775 * Userspace is allowed to set any unsigned integer value in the (min, max)
3779 * A pointer to the newly created property on success, NULL on failure.
3781 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3783 uint64_t min, uint64_t max)
3785 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3788 EXPORT_SYMBOL(drm_property_create_range);
3791 * drm_property_create_signed_range - create a new signed ranged property type
3793 * @flags: flags specifying the property type
3794 * @name: name of the property
3795 * @min: minimum value of the property
3796 * @max: maximum value of the property
3798 * This creates a new generic drm property which can then be attached to a drm
3799 * object with drm_object_attach_property. The returned property object must be
3800 * freed with drm_property_destroy.
3802 * Userspace is allowed to set any signed integer value in the (min, max)
3806 * A pointer to the newly created property on success, NULL on failure.
3808 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3809 int flags, const char *name,
3810 int64_t min, int64_t max)
3812 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3813 name, I642U64(min), I642U64(max));
3815 EXPORT_SYMBOL(drm_property_create_signed_range);
3818 * drm_property_create_object - create a new object property type
3820 * @flags: flags specifying the property type
3821 * @name: name of the property
3822 * @type: object type from DRM_MODE_OBJECT_* defines
3824 * This creates a new generic drm property which can then be attached to a drm
3825 * object with drm_object_attach_property. The returned property object must be
3826 * freed with drm_property_destroy.
3828 * Userspace is only allowed to set this to any property value of the given
3829 * @type. Only useful for atomic properties, which is enforced.
3832 * A pointer to the newly created property on success, NULL on failure.
3834 struct drm_property *drm_property_create_object(struct drm_device *dev,
3835 int flags, const char *name, uint32_t type)
3837 struct drm_property *property;
3839 flags |= DRM_MODE_PROP_OBJECT;
3841 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3844 property = drm_property_create(dev, flags, name, 1);
3848 property->values[0] = type;
3852 EXPORT_SYMBOL(drm_property_create_object);
3855 * drm_property_create_bool - create a new boolean property type
3857 * @flags: flags specifying the property type
3858 * @name: name of the property
3860 * This creates a new generic drm property which can then be attached to a drm
3861 * object with drm_object_attach_property. The returned property object must be
3862 * freed with drm_property_destroy.
3864 * This is implemented as a ranged property with only {0, 1} as valid values.
3867 * A pointer to the newly created property on success, NULL on failure.
3869 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3872 return drm_property_create_range(dev, flags, name, 0, 1);
3874 EXPORT_SYMBOL(drm_property_create_bool);
3877 * drm_property_add_enum - add a possible value to an enumeration property
3878 * @property: enumeration property to change
3879 * @index: index of the new enumeration
3880 * @value: value of the new enumeration
3881 * @name: symbolic name of the new enumeration
3883 * This functions adds enumerations to a property.
3885 * It's use is deprecated, drivers should use one of the more specific helpers
3886 * to directly create the property with all enumerations already attached.
3889 * Zero on success, error code on failure.
3891 int drm_property_add_enum(struct drm_property *property, int index,
3892 uint64_t value, const char *name)
3894 struct drm_property_enum *prop_enum;
3896 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3897 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3901 * Bitmask enum properties have the additional constraint of values
3904 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3908 if (!list_empty(&property->enum_list)) {
3909 list_for_each_entry(prop_enum, &property->enum_list, head) {
3910 if (prop_enum->value == value) {
3911 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3912 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3918 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3922 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3923 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3924 prop_enum->value = value;
3926 property->values[index] = value;
3927 list_add_tail(&prop_enum->head, &property->enum_list);
3930 EXPORT_SYMBOL(drm_property_add_enum);
3933 * drm_property_destroy - destroy a drm property
3935 * @property: property to destry
3937 * This function frees a property including any attached resources like
3938 * enumeration values.
3940 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3942 struct drm_property_enum *prop_enum, *pt;
3944 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3945 list_del(&prop_enum->head);
3949 if (property->num_values)
3950 kfree(property->values);
3951 drm_mode_object_put(dev, &property->base);
3952 list_del(&property->head);
3955 EXPORT_SYMBOL(drm_property_destroy);
3958 * drm_object_attach_property - attach a property to a modeset object
3959 * @obj: drm modeset object
3960 * @property: property to attach
3961 * @init_val: initial value of the property
3963 * This attaches the given property to the modeset object with the given initial
3964 * value. Currently this function cannot fail since the properties are stored in
3965 * a statically sized array.
3967 void drm_object_attach_property(struct drm_mode_object *obj,
3968 struct drm_property *property,
3971 int count = obj->properties->count;
3973 if (count == DRM_OBJECT_MAX_PROPERTY) {
3974 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3975 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3976 "you see this message on the same object type.\n",
3981 obj->properties->properties[count] = property;
3982 obj->properties->values[count] = init_val;
3983 obj->properties->count++;
3984 if (property->flags & DRM_MODE_PROP_ATOMIC)
3985 obj->properties->atomic_count++;
3987 EXPORT_SYMBOL(drm_object_attach_property);
3990 * drm_object_property_set_value - set the value of a property
3991 * @obj: drm mode object to set property value for
3992 * @property: property to set
3993 * @val: value the property should be set to
3995 * This functions sets a given property on a given object. This function only
3996 * changes the software state of the property, it does not call into the
3997 * driver's ->set_property callback.
4000 * Zero on success, error code on failure.
4002 int drm_object_property_set_value(struct drm_mode_object *obj,
4003 struct drm_property *property, uint64_t val)
4007 for (i = 0; i < obj->properties->count; i++) {
4008 if (obj->properties->properties[i] == property) {
4009 obj->properties->values[i] = val;
4016 EXPORT_SYMBOL(drm_object_property_set_value);
4019 * drm_object_property_get_value - retrieve the value of a property
4020 * @obj: drm mode object to get property value from
4021 * @property: property to retrieve
4022 * @val: storage for the property value
4024 * This function retrieves the softare state of the given property for the given
4025 * property. Since there is no driver callback to retrieve the current property
4026 * value this might be out of sync with the hardware, depending upon the driver
4030 * Zero on success, error code on failure.
4032 int drm_object_property_get_value(struct drm_mode_object *obj,
4033 struct drm_property *property, uint64_t *val)
4037 /* read-only properties bypass atomic mechanism and still store
4038 * their value in obj->properties->values[].. mostly to avoid
4039 * having to deal w/ EDID and similar props in atomic paths:
4041 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4042 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4043 return drm_atomic_get_property(obj, property, val);
4045 for (i = 0; i < obj->properties->count; i++) {
4046 if (obj->properties->properties[i] == property) {
4047 *val = obj->properties->values[i];
4054 EXPORT_SYMBOL(drm_object_property_get_value);
4057 * drm_mode_getproperty_ioctl - get the property metadata
4060 * @file_priv: DRM file info
4062 * This function retrieves the metadata for a given property, like the different
4063 * possible values for an enum property or the limits for a range property.
4065 * Blob properties are special
4067 * Called by the user via ioctl.
4070 * Zero on success, negative errno on failure.
4072 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4073 void *data, struct drm_file *file_priv)
4075 struct drm_mode_get_property *out_resp = data;
4076 struct drm_property *property;
4078 int value_count = 0;
4081 struct drm_property_enum *prop_enum;
4082 struct drm_mode_property_enum __user *enum_ptr;
4083 uint64_t __user *values_ptr;
4085 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4088 drm_modeset_lock_all(dev);
4089 property = drm_property_find(dev, out_resp->prop_id);
4095 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4096 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4097 list_for_each_entry(prop_enum, &property->enum_list, head)
4101 value_count = property->num_values;
4103 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4104 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4105 out_resp->flags = property->flags;
4107 if ((out_resp->count_values >= value_count) && value_count) {
4108 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4109 for (i = 0; i < value_count; i++) {
4110 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4116 out_resp->count_values = value_count;
4118 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4119 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4120 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4122 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4123 list_for_each_entry(prop_enum, &property->enum_list, head) {
4125 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4130 if (copy_to_user(&enum_ptr[copied].name,
4131 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4138 out_resp->count_enum_blobs = enum_count;
4142 * NOTE: The idea seems to have been to use this to read all the blob
4143 * property values. But nothing ever added them to the corresponding
4144 * list, userspace always used the special-purpose get_blob ioctl to
4145 * read the value for a blob property. It also doesn't make a lot of
4146 * sense to return values here when everything else is just metadata for
4147 * the property itself.
4149 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4150 out_resp->count_enum_blobs = 0;
4152 drm_modeset_unlock_all(dev);
4156 static struct drm_property_blob *
4157 drm_property_create_blob(struct drm_device *dev, size_t length,
4160 struct drm_property_blob *blob;
4163 if (!length || !data)
4166 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4170 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4176 blob->length = length;
4178 memcpy(blob->data, data, length);
4180 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
4184 static void drm_property_destroy_blob(struct drm_device *dev,
4185 struct drm_property_blob *blob)
4187 drm_mode_object_put(dev, &blob->base);
4188 list_del(&blob->head);
4193 * drm_mode_getblob_ioctl - get the contents of a blob property value
4196 * @file_priv: DRM file info
4198 * This function retrieves the contents of a blob property. The value stored in
4199 * an object's blob property is just a normal modeset object id.
4201 * Called by the user via ioctl.
4204 * Zero on success, negative errno on failure.
4206 int drm_mode_getblob_ioctl(struct drm_device *dev,
4207 void *data, struct drm_file *file_priv)
4209 struct drm_mode_get_blob *out_resp = data;
4210 struct drm_property_blob *blob;
4212 void __user *blob_ptr;
4214 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4217 drm_modeset_lock_all(dev);
4218 blob = drm_property_blob_find(dev, out_resp->blob_id);
4224 if (out_resp->length == blob->length) {
4225 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4226 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4231 out_resp->length = blob->length;
4234 drm_modeset_unlock_all(dev);
4239 * drm_mode_connector_set_path_property - set tile property on connector
4240 * @connector: connector to set property on.
4241 * @path: path to use for property.
4243 * This creates a property to expose to userspace to specify a
4244 * connector path. This is mainly used for DisplayPort MST where
4245 * connectors have a topology and we want to allow userspace to give
4246 * them more meaningful names.
4249 * Zero on success, negative errno on failure.
4251 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4254 struct drm_device *dev = connector->dev;
4255 size_t size = strlen(path) + 1;
4258 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4260 if (!connector->path_blob_ptr)
4263 ret = drm_object_property_set_value(&connector->base,
4264 dev->mode_config.path_property,
4265 connector->path_blob_ptr->base.id);
4268 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4271 * drm_mode_connector_set_tile_property - set tile property on connector
4272 * @connector: connector to set property on.
4274 * This looks up the tile information for a connector, and creates a
4275 * property for userspace to parse if it exists. The property is of
4276 * the form of 8 integers using ':' as a separator.
4279 * Zero on success, errno on failure.
4281 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4283 struct drm_device *dev = connector->dev;
4287 if (connector->tile_blob_ptr)
4288 drm_property_destroy_blob(dev, connector->tile_blob_ptr);
4290 if (!connector->has_tile) {
4291 connector->tile_blob_ptr = NULL;
4292 ret = drm_object_property_set_value(&connector->base,
4293 dev->mode_config.tile_property, 0);
4297 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4298 connector->tile_group->id, connector->tile_is_single_monitor,
4299 connector->num_h_tile, connector->num_v_tile,
4300 connector->tile_h_loc, connector->tile_v_loc,
4301 connector->tile_h_size, connector->tile_v_size);
4302 size = strlen(tile) + 1;
4304 connector->tile_blob_ptr = drm_property_create_blob(connector->dev,
4306 if (!connector->tile_blob_ptr)
4309 ret = drm_object_property_set_value(&connector->base,
4310 dev->mode_config.tile_property,
4311 connector->tile_blob_ptr->base.id);
4314 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4317 * drm_mode_connector_update_edid_property - update the edid property of a connector
4318 * @connector: drm connector
4319 * @edid: new value of the edid property
4321 * This function creates a new blob modeset object and assigns its id to the
4322 * connector's edid property.
4325 * Zero on success, negative errno on failure.
4327 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4328 const struct edid *edid)
4330 struct drm_device *dev = connector->dev;
4334 /* ignore requests to set edid when overridden */
4335 if (connector->override_edid)
4338 if (connector->edid_blob_ptr)
4339 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4341 /* Delete edid, when there is none. */
4343 connector->edid_blob_ptr = NULL;
4344 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4348 size = EDID_LENGTH * (1 + edid->extensions);
4349 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4351 if (!connector->edid_blob_ptr)
4354 ret = drm_object_property_set_value(&connector->base,
4355 dev->mode_config.edid_property,
4356 connector->edid_blob_ptr->base.id);
4360 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4362 /* Some properties could refer to dynamic refcnt'd objects, or things that
4363 * need special locking to handle lifetime issues (ie. to ensure the prop
4364 * value doesn't become invalid part way through the property update due to
4365 * race). The value returned by reference via 'obj' should be passed back
4366 * to drm_property_change_valid_put() after the property is set (and the
4367 * object to which the property is attached has a chance to take it's own
4370 bool drm_property_change_valid_get(struct drm_property *property,
4371 uint64_t value, struct drm_mode_object **ref)
4375 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4380 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4381 if (value < property->values[0] || value > property->values[1])
4384 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4385 int64_t svalue = U642I64(value);
4387 if (svalue < U642I64(property->values[0]) ||
4388 svalue > U642I64(property->values[1]))
4391 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4392 uint64_t valid_mask = 0;
4394 for (i = 0; i < property->num_values; i++)
4395 valid_mask |= (1ULL << property->values[i]);
4396 return !(value & ~valid_mask);
4397 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4398 /* Only the driver knows */
4400 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4401 /* a zero value for an object property translates to null: */
4405 /* handle refcnt'd objects specially: */
4406 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4407 struct drm_framebuffer *fb;
4408 fb = drm_framebuffer_lookup(property->dev, value);
4416 return _object_find(property->dev, value, property->values[0]) != NULL;
4420 for (i = 0; i < property->num_values; i++)
4421 if (property->values[i] == value)
4426 void drm_property_change_valid_put(struct drm_property *property,
4427 struct drm_mode_object *ref)
4432 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4433 if (property->values[0] == DRM_MODE_OBJECT_FB)
4434 drm_framebuffer_unreference(obj_to_fb(ref));
4439 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4442 * @file_priv: DRM file info
4444 * This function sets the current value for a connectors's property. It also
4445 * calls into a driver's ->set_property callback to update the hardware state
4447 * Called by the user via ioctl.
4450 * Zero on success, negative errno on failure.
4452 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4453 void *data, struct drm_file *file_priv)
4455 struct drm_mode_connector_set_property *conn_set_prop = data;
4456 struct drm_mode_obj_set_property obj_set_prop = {
4457 .value = conn_set_prop->value,
4458 .prop_id = conn_set_prop->prop_id,
4459 .obj_id = conn_set_prop->connector_id,
4460 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4463 /* It does all the locking and checking we need */
4464 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4467 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4468 struct drm_property *property,
4472 struct drm_connector *connector = obj_to_connector(obj);
4474 /* Do DPMS ourselves */
4475 if (property == connector->dev->mode_config.dpms_property) {
4476 if (connector->funcs->dpms)
4477 (*connector->funcs->dpms)(connector, (int)value);
4479 } else if (connector->funcs->set_property)
4480 ret = connector->funcs->set_property(connector, property, value);
4482 /* store the property value if successful */
4484 drm_object_property_set_value(&connector->base, property, value);
4488 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4489 struct drm_property *property,
4493 struct drm_crtc *crtc = obj_to_crtc(obj);
4495 if (crtc->funcs->set_property)
4496 ret = crtc->funcs->set_property(crtc, property, value);
4498 drm_object_property_set_value(obj, property, value);
4504 * drm_mode_plane_set_obj_prop - set the value of a property
4505 * @plane: drm plane object to set property value for
4506 * @property: property to set
4507 * @value: value the property should be set to
4509 * This functions sets a given property on a given plane object. This function
4510 * calls the driver's ->set_property callback and changes the software state of
4511 * the property if the callback succeeds.
4514 * Zero on success, error code on failure.
4516 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4517 struct drm_property *property,
4521 struct drm_mode_object *obj = &plane->base;
4523 if (plane->funcs->set_property)
4524 ret = plane->funcs->set_property(plane, property, value);
4526 drm_object_property_set_value(obj, property, value);
4530 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4533 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4536 * @file_priv: DRM file info
4538 * This function retrieves the current value for an object's property. Compared
4539 * to the connector specific ioctl this one is extended to also work on crtc and
4542 * Called by the user via ioctl.
4545 * Zero on success, negative errno on failure.
4547 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4548 struct drm_file *file_priv)
4550 struct drm_mode_obj_get_properties *arg = data;
4551 struct drm_mode_object *obj;
4554 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4557 drm_modeset_lock_all(dev);
4559 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4564 if (!obj->properties) {
4569 ret = get_properties(obj, file_priv->atomic,
4570 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4571 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4575 drm_modeset_unlock_all(dev);
4580 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4583 * @file_priv: DRM file info
4585 * This function sets the current value for an object's property. It also calls
4586 * into a driver's ->set_property callback to update the hardware state.
4587 * Compared to the connector specific ioctl this one is extended to also work on
4588 * crtc and plane objects.
4590 * Called by the user via ioctl.
4593 * Zero on success, negative errno on failure.
4595 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4596 struct drm_file *file_priv)
4598 struct drm_mode_obj_set_property *arg = data;
4599 struct drm_mode_object *arg_obj;
4600 struct drm_mode_object *prop_obj;
4601 struct drm_property *property;
4602 int i, ret = -EINVAL;
4603 struct drm_mode_object *ref;
4605 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4608 drm_modeset_lock_all(dev);
4610 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4615 if (!arg_obj->properties)
4618 for (i = 0; i < arg_obj->properties->count; i++)
4619 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
4622 if (i == arg_obj->properties->count)
4625 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4626 DRM_MODE_OBJECT_PROPERTY);
4631 property = obj_to_property(prop_obj);
4633 if (!drm_property_change_valid_get(property, arg->value, &ref))
4636 switch (arg_obj->type) {
4637 case DRM_MODE_OBJECT_CONNECTOR:
4638 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4641 case DRM_MODE_OBJECT_CRTC:
4642 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4644 case DRM_MODE_OBJECT_PLANE:
4645 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4646 property, arg->value);
4650 drm_property_change_valid_put(property, ref);
4653 drm_modeset_unlock_all(dev);
4658 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4659 * @connector: connector to attach
4660 * @encoder: encoder to attach @connector to
4662 * This function links up a connector to an encoder. Note that the routing
4663 * restrictions between encoders and crtcs are exposed to userspace through the
4664 * possible_clones and possible_crtcs bitmasks.
4667 * Zero on success, negative errno on failure.
4669 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4670 struct drm_encoder *encoder)
4674 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4675 if (connector->encoder_ids[i] == 0) {
4676 connector->encoder_ids[i] = encoder->base.id;
4682 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4685 * drm_mode_crtc_set_gamma_size - set the gamma table size
4686 * @crtc: CRTC to set the gamma table size for
4687 * @gamma_size: size of the gamma table
4689 * Drivers which support gamma tables should set this to the supported gamma
4690 * table size when initializing the CRTC. Currently the drm core only supports a
4691 * fixed gamma table size.
4694 * Zero on success, negative errno on failure.
4696 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4699 crtc->gamma_size = gamma_size;
4701 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
4703 if (!crtc->gamma_store) {
4704 crtc->gamma_size = 0;
4710 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4713 * drm_mode_gamma_set_ioctl - set the gamma table
4716 * @file_priv: DRM file info
4718 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4719 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4721 * Called by the user via ioctl.
4724 * Zero on success, negative errno on failure.
4726 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4727 void *data, struct drm_file *file_priv)
4729 struct drm_mode_crtc_lut *crtc_lut = data;
4730 struct drm_crtc *crtc;
4731 void *r_base, *g_base, *b_base;
4735 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4738 drm_modeset_lock_all(dev);
4739 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4745 if (crtc->funcs->gamma_set == NULL) {
4750 /* memcpy into gamma store */
4751 if (crtc_lut->gamma_size != crtc->gamma_size) {
4756 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4757 r_base = crtc->gamma_store;
4758 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4763 g_base = r_base + size;
4764 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4769 b_base = g_base + size;
4770 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4775 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4778 drm_modeset_unlock_all(dev);
4784 * drm_mode_gamma_get_ioctl - get the gamma table
4787 * @file_priv: DRM file info
4789 * Copy the current gamma table into the storage provided. This also provides
4790 * the gamma table size the driver expects, which can be used to size the
4791 * allocated storage.
4793 * Called by the user via ioctl.
4796 * Zero on success, negative errno on failure.
4798 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4799 void *data, struct drm_file *file_priv)
4801 struct drm_mode_crtc_lut *crtc_lut = data;
4802 struct drm_crtc *crtc;
4803 void *r_base, *g_base, *b_base;
4807 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4810 drm_modeset_lock_all(dev);
4811 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4817 /* memcpy into gamma store */
4818 if (crtc_lut->gamma_size != crtc->gamma_size) {
4823 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4824 r_base = crtc->gamma_store;
4825 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4830 g_base = r_base + size;
4831 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4836 b_base = g_base + size;
4837 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4842 drm_modeset_unlock_all(dev);
4847 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4850 * @file_priv: DRM file info
4852 * This schedules an asynchronous update on a given CRTC, called page flip.
4853 * Optionally a drm event is generated to signal the completion of the event.
4854 * Generic drivers cannot assume that a pageflip with changed framebuffer
4855 * properties (including driver specific metadata like tiling layout) will work,
4856 * but some drivers support e.g. pixel format changes through the pageflip
4859 * Called by the user via ioctl.
4862 * Zero on success, negative errno on failure.
4864 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4865 void *data, struct drm_file *file_priv)
4867 struct drm_mode_crtc_page_flip *page_flip = data;
4868 struct drm_crtc *crtc;
4869 struct drm_framebuffer *fb = NULL;
4870 struct drm_pending_vblank_event *e = NULL;
4871 unsigned long flags;
4874 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4875 page_flip->reserved != 0)
4878 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4881 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4885 drm_modeset_lock_crtc(crtc, crtc->primary);
4886 if (crtc->primary->fb == NULL) {
4887 /* The framebuffer is currently unbound, presumably
4888 * due to a hotplug event, that userspace has not
4895 if (crtc->funcs->page_flip == NULL)
4898 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4904 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4908 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4909 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4914 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4916 spin_lock_irqsave(&dev->event_lock, flags);
4917 if (file_priv->event_space < sizeof(e->event)) {
4918 spin_unlock_irqrestore(&dev->event_lock, flags);
4921 file_priv->event_space -= sizeof(e->event);
4922 spin_unlock_irqrestore(&dev->event_lock, flags);
4924 e = kzalloc(sizeof(*e), GFP_KERNEL);
4926 spin_lock_irqsave(&dev->event_lock, flags);
4927 file_priv->event_space += sizeof(e->event);
4928 spin_unlock_irqrestore(&dev->event_lock, flags);
4932 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4933 e->event.base.length = sizeof(e->event);
4934 e->event.user_data = page_flip->user_data;
4935 e->base.event = &e->event.base;
4936 e->base.file_priv = file_priv;
4938 (void (*) (struct drm_pending_event *)) kfree;
4941 crtc->primary->old_fb = crtc->primary->fb;
4942 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4944 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4945 spin_lock_irqsave(&dev->event_lock, flags);
4946 file_priv->event_space += sizeof(e->event);
4947 spin_unlock_irqrestore(&dev->event_lock, flags);
4950 /* Keep the old fb, don't unref it. */
4951 crtc->primary->old_fb = NULL;
4954 * Warn if the driver hasn't properly updated the crtc->fb
4955 * field to reflect that the new framebuffer is now used.
4956 * Failing to do so will screw with the reference counting
4959 WARN_ON(crtc->primary->fb != fb);
4960 /* Unref only the old framebuffer. */
4966 drm_framebuffer_unreference(fb);
4967 if (crtc->primary->old_fb)
4968 drm_framebuffer_unreference(crtc->primary->old_fb);
4969 crtc->primary->old_fb = NULL;
4970 drm_modeset_unlock_crtc(crtc);
4976 * drm_mode_config_reset - call ->reset callbacks
4979 * This functions calls all the crtc's, encoder's and connector's ->reset
4980 * callback. Drivers can use this in e.g. their driver load or resume code to
4981 * reset hardware and software state.
4983 void drm_mode_config_reset(struct drm_device *dev)
4985 struct drm_crtc *crtc;
4986 struct drm_plane *plane;
4987 struct drm_encoder *encoder;
4988 struct drm_connector *connector;
4990 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4991 if (plane->funcs->reset)
4992 plane->funcs->reset(plane);
4994 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4995 if (crtc->funcs->reset)
4996 crtc->funcs->reset(crtc);
4998 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4999 if (encoder->funcs->reset)
5000 encoder->funcs->reset(encoder);
5002 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
5003 connector->status = connector_status_unknown;
5005 if (connector->funcs->reset)
5006 connector->funcs->reset(connector);
5009 EXPORT_SYMBOL(drm_mode_config_reset);
5012 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5015 * @file_priv: DRM file info
5017 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5018 * TTM or something else entirely) and returns the resulting buffer handle. This
5019 * handle can then be wrapped up into a framebuffer modeset object.
5021 * Note that userspace is not allowed to use such objects for render
5022 * acceleration - drivers must create their own private ioctls for such a use
5025 * Called by the user via ioctl.
5028 * Zero on success, negative errno on failure.
5030 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5031 void *data, struct drm_file *file_priv)
5033 struct drm_mode_create_dumb *args = data;
5034 u32 cpp, stride, size;
5036 if (!dev->driver->dumb_create)
5038 if (!args->width || !args->height || !args->bpp)
5041 /* overflow checks for 32bit size calculations */
5042 /* NOTE: DIV_ROUND_UP() can overflow */
5043 cpp = DIV_ROUND_UP(args->bpp, 8);
5044 if (!cpp || cpp > 0xffffffffU / args->width)
5046 stride = cpp * args->width;
5047 if (args->height > 0xffffffffU / stride)
5050 /* test for wrap-around */
5051 size = args->height * stride;
5052 if (PAGE_ALIGN(size) == 0)
5056 * handle, pitch and size are output parameters. Zero them out to
5057 * prevent drivers from accidentally using uninitialized data. Since
5058 * not all existing userspace is clearing these fields properly we
5059 * cannot reject IOCTL with garbage in them.
5065 return dev->driver->dumb_create(file_priv, dev, args);
5069 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5072 * @file_priv: DRM file info
5074 * Allocate an offset in the drm device node's address space to be able to
5075 * memory map a dumb buffer.
5077 * Called by the user via ioctl.
5080 * Zero on success, negative errno on failure.
5082 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5083 void *data, struct drm_file *file_priv)
5085 struct drm_mode_map_dumb *args = data;
5087 /* call driver ioctl to get mmap offset */
5088 if (!dev->driver->dumb_map_offset)
5091 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5095 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5098 * @file_priv: DRM file info
5100 * This destroys the userspace handle for the given dumb backing storage buffer.
5101 * Since buffer objects must be reference counted in the kernel a buffer object
5102 * won't be immediately freed if a framebuffer modeset object still uses it.
5104 * Called by the user via ioctl.
5107 * Zero on success, negative errno on failure.
5109 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5110 void *data, struct drm_file *file_priv)
5112 struct drm_mode_destroy_dumb *args = data;
5114 if (!dev->driver->dumb_destroy)
5117 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5121 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5122 * @format: pixel format (DRM_FORMAT_*)
5123 * @depth: storage for the depth value
5124 * @bpp: storage for the bpp value
5126 * This only supports RGB formats here for compat with code that doesn't use
5127 * pixel formats directly yet.
5129 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5134 case DRM_FORMAT_RGB332:
5135 case DRM_FORMAT_BGR233:
5139 case DRM_FORMAT_XRGB1555:
5140 case DRM_FORMAT_XBGR1555:
5141 case DRM_FORMAT_RGBX5551:
5142 case DRM_FORMAT_BGRX5551:
5143 case DRM_FORMAT_ARGB1555:
5144 case DRM_FORMAT_ABGR1555:
5145 case DRM_FORMAT_RGBA5551:
5146 case DRM_FORMAT_BGRA5551:
5150 case DRM_FORMAT_RGB565:
5151 case DRM_FORMAT_BGR565:
5155 case DRM_FORMAT_RGB888:
5156 case DRM_FORMAT_BGR888:
5160 case DRM_FORMAT_XRGB8888:
5161 case DRM_FORMAT_XBGR8888:
5162 case DRM_FORMAT_RGBX8888:
5163 case DRM_FORMAT_BGRX8888:
5167 case DRM_FORMAT_XRGB2101010:
5168 case DRM_FORMAT_XBGR2101010:
5169 case DRM_FORMAT_RGBX1010102:
5170 case DRM_FORMAT_BGRX1010102:
5171 case DRM_FORMAT_ARGB2101010:
5172 case DRM_FORMAT_ABGR2101010:
5173 case DRM_FORMAT_RGBA1010102:
5174 case DRM_FORMAT_BGRA1010102:
5178 case DRM_FORMAT_ARGB8888:
5179 case DRM_FORMAT_ABGR8888:
5180 case DRM_FORMAT_RGBA8888:
5181 case DRM_FORMAT_BGRA8888:
5186 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5187 drm_get_format_name(format));
5193 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5196 * drm_format_num_planes - get the number of planes for format
5197 * @format: pixel format (DRM_FORMAT_*)
5200 * The number of planes used by the specified pixel format.
5202 int drm_format_num_planes(uint32_t format)
5205 case DRM_FORMAT_YUV410:
5206 case DRM_FORMAT_YVU410:
5207 case DRM_FORMAT_YUV411:
5208 case DRM_FORMAT_YVU411:
5209 case DRM_FORMAT_YUV420:
5210 case DRM_FORMAT_YVU420:
5211 case DRM_FORMAT_YUV422:
5212 case DRM_FORMAT_YVU422:
5213 case DRM_FORMAT_YUV444:
5214 case DRM_FORMAT_YVU444:
5216 case DRM_FORMAT_NV12:
5217 case DRM_FORMAT_NV21:
5218 case DRM_FORMAT_NV16:
5219 case DRM_FORMAT_NV61:
5220 case DRM_FORMAT_NV24:
5221 case DRM_FORMAT_NV42:
5227 EXPORT_SYMBOL(drm_format_num_planes);
5230 * drm_format_plane_cpp - determine the bytes per pixel value
5231 * @format: pixel format (DRM_FORMAT_*)
5232 * @plane: plane index
5235 * The bytes per pixel value for the specified plane.
5237 int drm_format_plane_cpp(uint32_t format, int plane)
5242 if (plane >= drm_format_num_planes(format))
5246 case DRM_FORMAT_YUYV:
5247 case DRM_FORMAT_YVYU:
5248 case DRM_FORMAT_UYVY:
5249 case DRM_FORMAT_VYUY:
5251 case DRM_FORMAT_NV12:
5252 case DRM_FORMAT_NV21:
5253 case DRM_FORMAT_NV16:
5254 case DRM_FORMAT_NV61:
5255 case DRM_FORMAT_NV24:
5256 case DRM_FORMAT_NV42:
5257 return plane ? 2 : 1;
5258 case DRM_FORMAT_YUV410:
5259 case DRM_FORMAT_YVU410:
5260 case DRM_FORMAT_YUV411:
5261 case DRM_FORMAT_YVU411:
5262 case DRM_FORMAT_YUV420:
5263 case DRM_FORMAT_YVU420:
5264 case DRM_FORMAT_YUV422:
5265 case DRM_FORMAT_YVU422:
5266 case DRM_FORMAT_YUV444:
5267 case DRM_FORMAT_YVU444:
5270 drm_fb_get_bpp_depth(format, &depth, &bpp);
5274 EXPORT_SYMBOL(drm_format_plane_cpp);
5277 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5278 * @format: pixel format (DRM_FORMAT_*)
5281 * The horizontal chroma subsampling factor for the
5282 * specified pixel format.
5284 int drm_format_horz_chroma_subsampling(uint32_t format)
5287 case DRM_FORMAT_YUV411:
5288 case DRM_FORMAT_YVU411:
5289 case DRM_FORMAT_YUV410:
5290 case DRM_FORMAT_YVU410:
5292 case DRM_FORMAT_YUYV:
5293 case DRM_FORMAT_YVYU:
5294 case DRM_FORMAT_UYVY:
5295 case DRM_FORMAT_VYUY:
5296 case DRM_FORMAT_NV12:
5297 case DRM_FORMAT_NV21:
5298 case DRM_FORMAT_NV16:
5299 case DRM_FORMAT_NV61:
5300 case DRM_FORMAT_YUV422:
5301 case DRM_FORMAT_YVU422:
5302 case DRM_FORMAT_YUV420:
5303 case DRM_FORMAT_YVU420:
5309 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5312 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5313 * @format: pixel format (DRM_FORMAT_*)
5316 * The vertical chroma subsampling factor for the
5317 * specified pixel format.
5319 int drm_format_vert_chroma_subsampling(uint32_t format)
5322 case DRM_FORMAT_YUV410:
5323 case DRM_FORMAT_YVU410:
5325 case DRM_FORMAT_YUV420:
5326 case DRM_FORMAT_YVU420:
5327 case DRM_FORMAT_NV12:
5328 case DRM_FORMAT_NV21:
5334 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5337 * drm_rotation_simplify() - Try to simplify the rotation
5338 * @rotation: Rotation to be simplified
5339 * @supported_rotations: Supported rotations
5341 * Attempt to simplify the rotation to a form that is supported.
5342 * Eg. if the hardware supports everything except DRM_REFLECT_X
5343 * one could call this function like this:
5345 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5346 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5347 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5349 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5350 * transforms the hardware supports, this function may not
5351 * be able to produce a supported transform, so the caller should
5352 * check the result afterwards.
5354 unsigned int drm_rotation_simplify(unsigned int rotation,
5355 unsigned int supported_rotations)
5357 if (rotation & ~supported_rotations) {
5358 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5359 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5364 EXPORT_SYMBOL(drm_rotation_simplify);
5367 * drm_mode_config_init - initialize DRM mode_configuration structure
5370 * Initialize @dev's mode_config structure, used for tracking the graphics
5371 * configuration of @dev.
5373 * Since this initializes the modeset locks, no locking is possible. Which is no
5374 * problem, since this should happen single threaded at init time. It is the
5375 * driver's problem to ensure this guarantee.
5378 void drm_mode_config_init(struct drm_device *dev)
5380 mutex_init(&dev->mode_config.mutex);
5381 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5382 mutex_init(&dev->mode_config.idr_mutex);
5383 mutex_init(&dev->mode_config.fb_lock);
5384 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5385 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5386 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5387 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5388 INIT_LIST_HEAD(&dev->mode_config.property_list);
5389 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5390 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5391 idr_init(&dev->mode_config.crtc_idr);
5392 idr_init(&dev->mode_config.tile_idr);
5394 drm_modeset_lock_all(dev);
5395 drm_mode_create_standard_properties(dev);
5396 drm_modeset_unlock_all(dev);
5398 /* Just to be sure */
5399 dev->mode_config.num_fb = 0;
5400 dev->mode_config.num_connector = 0;
5401 dev->mode_config.num_crtc = 0;
5402 dev->mode_config.num_encoder = 0;
5403 dev->mode_config.num_overlay_plane = 0;
5404 dev->mode_config.num_total_plane = 0;
5406 EXPORT_SYMBOL(drm_mode_config_init);
5409 * drm_mode_config_cleanup - free up DRM mode_config info
5412 * Free up all the connectors and CRTCs associated with this DRM device, then
5413 * free up the framebuffers and associated buffer objects.
5415 * Note that since this /should/ happen single-threaded at driver/device
5416 * teardown time, no locking is required. It's the driver's job to ensure that
5417 * this guarantee actually holds true.
5419 * FIXME: cleanup any dangling user buffer objects too
5421 void drm_mode_config_cleanup(struct drm_device *dev)
5423 struct drm_connector *connector, *ot;
5424 struct drm_crtc *crtc, *ct;
5425 struct drm_encoder *encoder, *enct;
5426 struct drm_framebuffer *fb, *fbt;
5427 struct drm_property *property, *pt;
5428 struct drm_property_blob *blob, *bt;
5429 struct drm_plane *plane, *plt;
5431 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5433 encoder->funcs->destroy(encoder);
5436 list_for_each_entry_safe(connector, ot,
5437 &dev->mode_config.connector_list, head) {
5438 connector->funcs->destroy(connector);
5441 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5443 drm_property_destroy(dev, property);
5446 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5448 drm_property_destroy_blob(dev, blob);
5452 * Single-threaded teardown context, so it's not required to grab the
5453 * fb_lock to protect against concurrent fb_list access. Contrary, it
5454 * would actually deadlock with the drm_framebuffer_cleanup function.
5456 * Also, if there are any framebuffers left, that's a driver leak now,
5457 * so politely WARN about this.
5459 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5460 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5461 drm_framebuffer_remove(fb);
5464 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5466 plane->funcs->destroy(plane);
5469 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5470 crtc->funcs->destroy(crtc);
5473 idr_destroy(&dev->mode_config.tile_idr);
5474 idr_destroy(&dev->mode_config.crtc_idr);
5475 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5477 EXPORT_SYMBOL(drm_mode_config_cleanup);
5479 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5480 unsigned int supported_rotations)
5482 static const struct drm_prop_enum_list props[] = {
5483 { DRM_ROTATE_0, "rotate-0" },
5484 { DRM_ROTATE_90, "rotate-90" },
5485 { DRM_ROTATE_180, "rotate-180" },
5486 { DRM_ROTATE_270, "rotate-270" },
5487 { DRM_REFLECT_X, "reflect-x" },
5488 { DRM_REFLECT_Y, "reflect-y" },
5491 return drm_property_create_bitmask(dev, 0, "rotation",
5492 props, ARRAY_SIZE(props),
5493 supported_rotations);
5495 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5500 * Tile groups are used to represent tiled monitors with a unique
5501 * integer identifier. Tiled monitors using DisplayID v1.3 have
5502 * a unique 8-byte handle, we store this in a tile group, so we
5503 * have a common identifier for all tiles in a monitor group.
5505 static void drm_tile_group_free(struct kref *kref)
5507 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5508 struct drm_device *dev = tg->dev;
5509 mutex_lock(&dev->mode_config.idr_mutex);
5510 idr_remove(&dev->mode_config.tile_idr, tg->id);
5511 mutex_unlock(&dev->mode_config.idr_mutex);
5516 * drm_mode_put_tile_group - drop a reference to a tile group.
5518 * @tg: tile group to drop reference to.
5520 * drop reference to tile group and free if 0.
5522 void drm_mode_put_tile_group(struct drm_device *dev,
5523 struct drm_tile_group *tg)
5525 kref_put(&tg->refcount, drm_tile_group_free);
5529 * drm_mode_get_tile_group - get a reference to an existing tile group
5531 * @topology: 8-bytes unique per monitor.
5533 * Use the unique bytes to get a reference to an existing tile group.
5536 * tile group or NULL if not found.
5538 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5541 struct drm_tile_group *tg;
5543 mutex_lock(&dev->mode_config.idr_mutex);
5544 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5545 if (!memcmp(tg->group_data, topology, 8)) {
5546 if (!kref_get_unless_zero(&tg->refcount))
5548 mutex_unlock(&dev->mode_config.idr_mutex);
5552 mutex_unlock(&dev->mode_config.idr_mutex);
5557 * drm_mode_create_tile_group - create a tile group from a displayid description
5559 * @topology: 8-bytes unique per monitor.
5561 * Create a tile group for the unique monitor, and get a unique
5562 * identifier for the tile group.
5565 * new tile group or error.
5567 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5570 struct drm_tile_group *tg;
5573 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5575 return ERR_PTR(-ENOMEM);
5577 kref_init(&tg->refcount);
5578 memcpy(tg->group_data, topology, 8);
5581 mutex_lock(&dev->mode_config.idr_mutex);
5582 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5590 mutex_unlock(&dev->mode_config.idr_mutex);