2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_fourcc.h>
40 #include <drm/drm_modeset_lock.h>
42 #include "drm_crtc_internal.h"
43 #include "drm_internal.h"
45 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
46 struct drm_mode_fb_cmd2 *r,
47 struct drm_file *file_priv);
49 /* Avoid boilerplate. I'm tired of typing. */
50 #define DRM_ENUM_NAME_FN(fnname, list) \
51 const char *fnname(int val) \
54 for (i = 0; i < ARRAY_SIZE(list); i++) { \
55 if (list[i].type == val) \
56 return list[i].name; \
64 static const struct drm_prop_enum_list drm_dpms_enum_list[] =
65 { { DRM_MODE_DPMS_ON, "On" },
66 { DRM_MODE_DPMS_STANDBY, "Standby" },
67 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
68 { DRM_MODE_DPMS_OFF, "Off" }
71 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
73 static const struct drm_prop_enum_list drm_plane_type_enum_list[] =
75 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
76 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
77 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
83 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[] =
102 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
103 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
104 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
107 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
109 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
111 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
112 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
113 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
116 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
117 drm_dvi_i_subconnector_enum_list)
119 static const struct drm_prop_enum_list drm_tv_select_enum_list[] =
121 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
125 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
128 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
130 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
132 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
133 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
134 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
135 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
136 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
139 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
140 drm_tv_subconnector_enum_list)
142 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
143 { DRM_MODE_DIRTY_OFF, "Off" },
144 { DRM_MODE_DIRTY_ON, "On" },
145 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
148 struct drm_conn_prop_enum_list {
155 * Connector and encoder types.
157 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
158 { { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
159 { DRM_MODE_CONNECTOR_VGA, "VGA" },
160 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
161 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
162 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
163 { DRM_MODE_CONNECTOR_Composite, "Composite" },
164 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
165 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
166 { DRM_MODE_CONNECTOR_Component, "Component" },
167 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
168 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
169 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
170 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
171 { DRM_MODE_CONNECTOR_TV, "TV" },
172 { DRM_MODE_CONNECTOR_eDP, "eDP" },
173 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
174 { DRM_MODE_CONNECTOR_DSI, "DSI" },
177 static const struct drm_prop_enum_list drm_encoder_enum_list[] =
178 { { DRM_MODE_ENCODER_NONE, "None" },
179 { DRM_MODE_ENCODER_DAC, "DAC" },
180 { DRM_MODE_ENCODER_TMDS, "TMDS" },
181 { DRM_MODE_ENCODER_LVDS, "LVDS" },
182 { DRM_MODE_ENCODER_TVDAC, "TV" },
183 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
184 { DRM_MODE_ENCODER_DSI, "DSI" },
185 { DRM_MODE_ENCODER_DPMST, "DP MST" },
188 static const struct drm_prop_enum_list drm_subpixel_enum_list[] =
190 { SubPixelUnknown, "Unknown" },
191 { SubPixelHorizontalRGB, "Horizontal RGB" },
192 { SubPixelHorizontalBGR, "Horizontal BGR" },
193 { SubPixelVerticalRGB, "Vertical RGB" },
194 { SubPixelVerticalBGR, "Vertical BGR" },
195 { SubPixelNone, "None" },
198 void drm_connector_ida_init(void)
202 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
203 ida_init(&drm_connector_enum_list[i].ida);
206 void drm_connector_ida_destroy(void)
210 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
211 ida_destroy(&drm_connector_enum_list[i].ida);
215 * drm_get_connector_status_name - return a string for connector status
216 * @status: connector status to compute name of
218 * In contrast to the other drm_get_*_name functions this one here returns a
219 * const pointer and hence is threadsafe.
221 const char *drm_get_connector_status_name(enum drm_connector_status status)
223 if (status == connector_status_connected)
225 else if (status == connector_status_disconnected)
226 return "disconnected";
230 EXPORT_SYMBOL(drm_get_connector_status_name);
233 * drm_get_subpixel_order_name - return a string for a given subpixel enum
234 * @order: enum of subpixel_order
236 * Note you could abuse this and return something out of bounds, but that
237 * would be a caller error. No unscrubbed user data should make it here.
239 const char *drm_get_subpixel_order_name(enum subpixel_order order)
241 return drm_subpixel_enum_list[order].name;
243 EXPORT_SYMBOL(drm_get_subpixel_order_name);
245 static char printable_char(int c)
247 return isascii(c) && isprint(c) ? c : '?';
251 * drm_get_format_name - return a string for drm fourcc format
252 * @format: format to compute name of
254 * Note that the buffer used by this function is globally shared and owned by
255 * the function itself.
257 * FIXME: This isn't really multithreading safe.
259 const char *drm_get_format_name(uint32_t format)
263 snprintf(buf, sizeof(buf),
264 "%c%c%c%c %s-endian (0x%08x)",
265 printable_char(format & 0xff),
266 printable_char((format >> 8) & 0xff),
267 printable_char((format >> 16) & 0xff),
268 printable_char((format >> 24) & 0x7f),
269 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
274 EXPORT_SYMBOL(drm_get_format_name);
277 * Internal function to assign a slot in the object idr and optionally
278 * register the object into the idr.
280 static int drm_mode_object_get_reg(struct drm_device *dev,
281 struct drm_mode_object *obj,
287 mutex_lock(&dev->mode_config.idr_mutex);
288 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
291 * Set up the object linking under the protection of the idr
292 * lock so that other users can't see inconsistent state.
295 obj->type = obj_type;
297 mutex_unlock(&dev->mode_config.idr_mutex);
299 return ret < 0 ? ret : 0;
303 * drm_mode_object_get - allocate a new modeset identifier
305 * @obj: object pointer, used to generate unique ID
306 * @obj_type: object type
308 * Create a unique identifier based on @ptr in @dev's identifier space. Used
309 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
310 * modeset identifiers are _not_ reference counted. Hence don't use this for
311 * reference counted modeset objects like framebuffers.
314 * New unique (relative to other objects in @dev) integer identifier for the
317 int drm_mode_object_get(struct drm_device *dev,
318 struct drm_mode_object *obj, uint32_t obj_type)
320 return drm_mode_object_get_reg(dev, obj, obj_type, true);
323 static void drm_mode_object_register(struct drm_device *dev,
324 struct drm_mode_object *obj)
326 mutex_lock(&dev->mode_config.idr_mutex);
327 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
328 mutex_unlock(&dev->mode_config.idr_mutex);
332 * drm_mode_object_put - free a modeset identifer
334 * @object: object to free
336 * Free @id from @dev's unique identifier pool. Note that despite the _get
337 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
338 * for reference counted modeset objects like framebuffers.
340 void drm_mode_object_put(struct drm_device *dev,
341 struct drm_mode_object *object)
343 mutex_lock(&dev->mode_config.idr_mutex);
344 idr_remove(&dev->mode_config.crtc_idr, object->id);
345 mutex_unlock(&dev->mode_config.idr_mutex);
348 static struct drm_mode_object *_object_find(struct drm_device *dev,
349 uint32_t id, uint32_t type)
351 struct drm_mode_object *obj = NULL;
353 mutex_lock(&dev->mode_config.idr_mutex);
354 obj = idr_find(&dev->mode_config.crtc_idr, id);
355 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
357 if (obj && obj->id != id)
359 /* don't leak out unref'd fb's */
360 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
362 mutex_unlock(&dev->mode_config.idr_mutex);
368 * drm_mode_object_find - look up a drm object with static lifetime
370 * @id: id of the mode object
371 * @type: type of the mode object
373 * Note that framebuffers cannot be looked up with this functions - since those
374 * are reference counted, they need special treatment. Even with
375 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
376 * rather than WARN_ON()).
378 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
379 uint32_t id, uint32_t type)
381 struct drm_mode_object *obj = NULL;
383 /* Framebuffers are reference counted and need their own lookup
385 WARN_ON(type == DRM_MODE_OBJECT_FB);
386 obj = _object_find(dev, id, type);
389 EXPORT_SYMBOL(drm_mode_object_find);
392 * drm_framebuffer_init - initialize a framebuffer
394 * @fb: framebuffer to be initialized
395 * @funcs: ... with these functions
397 * Allocates an ID for the framebuffer's parent mode object, sets its mode
398 * functions & device file and adds it to the master fd list.
401 * This functions publishes the fb and makes it available for concurrent access
402 * by other users. Which means by this point the fb _must_ be fully set up -
403 * since all the fb attributes are invariant over its lifetime, no further
404 * locking but only correct reference counting is required.
407 * Zero on success, error code on failure.
409 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
410 const struct drm_framebuffer_funcs *funcs)
414 mutex_lock(&dev->mode_config.fb_lock);
415 kref_init(&fb->refcount);
416 INIT_LIST_HEAD(&fb->filp_head);
420 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
424 dev->mode_config.num_fb++;
425 list_add(&fb->head, &dev->mode_config.fb_list);
427 mutex_unlock(&dev->mode_config.fb_lock);
431 EXPORT_SYMBOL(drm_framebuffer_init);
433 /* dev->mode_config.fb_lock must be held! */
434 static void __drm_framebuffer_unregister(struct drm_device *dev,
435 struct drm_framebuffer *fb)
437 mutex_lock(&dev->mode_config.idr_mutex);
438 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
439 mutex_unlock(&dev->mode_config.idr_mutex);
444 static void drm_framebuffer_free(struct kref *kref)
446 struct drm_framebuffer *fb =
447 container_of(kref, struct drm_framebuffer, refcount);
448 struct drm_device *dev = fb->dev;
451 * The lookup idr holds a weak reference, which has not necessarily been
452 * removed at this point. Check for that.
454 mutex_lock(&dev->mode_config.fb_lock);
456 /* Mark fb as reaped and drop idr ref. */
457 __drm_framebuffer_unregister(dev, fb);
459 mutex_unlock(&dev->mode_config.fb_lock);
461 fb->funcs->destroy(fb);
464 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
467 struct drm_mode_object *obj = NULL;
468 struct drm_framebuffer *fb;
470 mutex_lock(&dev->mode_config.idr_mutex);
471 obj = idr_find(&dev->mode_config.crtc_idr, id);
472 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
476 mutex_unlock(&dev->mode_config.idr_mutex);
482 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
484 * @id: id of the fb object
486 * If successful, this grabs an additional reference to the framebuffer -
487 * callers need to make sure to eventually unreference the returned framebuffer
488 * again, using @drm_framebuffer_unreference.
490 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
493 struct drm_framebuffer *fb;
495 mutex_lock(&dev->mode_config.fb_lock);
496 fb = __drm_framebuffer_lookup(dev, id);
498 if (!kref_get_unless_zero(&fb->refcount))
501 mutex_unlock(&dev->mode_config.fb_lock);
505 EXPORT_SYMBOL(drm_framebuffer_lookup);
508 * drm_framebuffer_unreference - unref a framebuffer
509 * @fb: framebuffer to unref
511 * This functions decrements the fb's refcount and frees it if it drops to zero.
513 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
515 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
516 kref_put(&fb->refcount, drm_framebuffer_free);
518 EXPORT_SYMBOL(drm_framebuffer_unreference);
521 * drm_framebuffer_reference - incr the fb refcnt
524 * This functions increments the fb's refcount.
526 void drm_framebuffer_reference(struct drm_framebuffer *fb)
528 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
529 kref_get(&fb->refcount);
531 EXPORT_SYMBOL(drm_framebuffer_reference);
533 static void drm_framebuffer_free_bug(struct kref *kref)
538 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
540 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
541 kref_put(&fb->refcount, drm_framebuffer_free_bug);
545 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
546 * @fb: fb to unregister
548 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
549 * those used for fbdev. Note that the caller must hold a reference of it's own,
550 * i.e. the object may not be destroyed through this call (since it'll lead to a
551 * locking inversion).
553 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
555 struct drm_device *dev = fb->dev;
557 mutex_lock(&dev->mode_config.fb_lock);
558 /* Mark fb as reaped and drop idr ref. */
559 __drm_framebuffer_unregister(dev, fb);
560 mutex_unlock(&dev->mode_config.fb_lock);
562 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
565 * drm_framebuffer_cleanup - remove a framebuffer object
566 * @fb: framebuffer to remove
568 * Cleanup framebuffer. This function is intended to be used from the drivers
569 * ->destroy callback. It can also be used to clean up driver private
570 * framebuffers embedded into a larger structure.
572 * Note that this function does not remove the fb from active usuage - if it is
573 * still used anywhere, hilarity can ensue since userspace could call getfb on
574 * the id and get back -EINVAL. Obviously no concern at driver unload time.
576 * Also, the framebuffer will not be removed from the lookup idr - for
577 * user-created framebuffers this will happen in in the rmfb ioctl. For
578 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
579 * drm_framebuffer_unregister_private.
581 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
583 struct drm_device *dev = fb->dev;
585 mutex_lock(&dev->mode_config.fb_lock);
587 dev->mode_config.num_fb--;
588 mutex_unlock(&dev->mode_config.fb_lock);
590 EXPORT_SYMBOL(drm_framebuffer_cleanup);
593 * drm_framebuffer_remove - remove and unreference a framebuffer object
594 * @fb: framebuffer to remove
596 * Scans all the CRTCs and planes in @dev's mode_config. If they're
597 * using @fb, removes it, setting it to NULL. Then drops the reference to the
598 * passed-in framebuffer. Might take the modeset locks.
600 * Note that this function optimizes the cleanup away if the caller holds the
601 * last reference to the framebuffer. It is also guaranteed to not take the
602 * modeset locks in this case.
604 void drm_framebuffer_remove(struct drm_framebuffer *fb)
606 struct drm_device *dev = fb->dev;
607 struct drm_crtc *crtc;
608 struct drm_plane *plane;
609 struct drm_mode_set set;
612 WARN_ON(!list_empty(&fb->filp_head));
615 * drm ABI mandates that we remove any deleted framebuffers from active
616 * useage. But since most sane clients only remove framebuffers they no
617 * longer need, try to optimize this away.
619 * Since we're holding a reference ourselves, observing a refcount of 1
620 * means that we're the last holder and can skip it. Also, the refcount
621 * can never increase from 1 again, so we don't need any barriers or
624 * Note that userspace could try to race with use and instate a new
625 * usage _after_ we've cleared all current ones. End result will be an
626 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
629 if (atomic_read(&fb->refcount.refcount) > 1) {
630 drm_modeset_lock_all(dev);
631 /* remove from any CRTC */
632 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
633 if (crtc->primary->fb == fb) {
634 /* should turn off the crtc */
635 memset(&set, 0, sizeof(struct drm_mode_set));
638 ret = drm_mode_set_config_internal(&set);
640 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
644 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
646 drm_plane_force_disable(plane);
648 drm_modeset_unlock_all(dev);
651 drm_framebuffer_unreference(fb);
653 EXPORT_SYMBOL(drm_framebuffer_remove);
655 DEFINE_WW_CLASS(crtc_ww_class);
658 * drm_crtc_init_with_planes - Initialise a new CRTC object with
659 * specified primary and cursor planes.
661 * @crtc: CRTC object to init
662 * @primary: Primary plane for CRTC
663 * @cursor: Cursor plane for CRTC
664 * @funcs: callbacks for the new CRTC
666 * Inits a new object created as base part of a driver crtc object.
669 * Zero on success, error code on failure.
671 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
672 struct drm_plane *primary,
673 struct drm_plane *cursor,
674 const struct drm_crtc_funcs *funcs)
676 struct drm_mode_config *config = &dev->mode_config;
681 crtc->invert_dimensions = false;
683 drm_modeset_lock_init(&crtc->mutex);
684 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
688 crtc->base.properties = &crtc->properties;
690 list_add_tail(&crtc->head, &config->crtc_list);
693 crtc->primary = primary;
694 crtc->cursor = cursor;
696 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
698 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
702 EXPORT_SYMBOL(drm_crtc_init_with_planes);
705 * drm_crtc_cleanup - Clean up the core crtc usage
706 * @crtc: CRTC to cleanup
708 * This function cleans up @crtc and removes it from the DRM mode setting
709 * core. Note that the function does *not* free the crtc structure itself,
710 * this is the responsibility of the caller.
712 void drm_crtc_cleanup(struct drm_crtc *crtc)
714 struct drm_device *dev = crtc->dev;
716 kfree(crtc->gamma_store);
717 crtc->gamma_store = NULL;
719 drm_modeset_lock_fini(&crtc->mutex);
721 drm_mode_object_put(dev, &crtc->base);
722 list_del(&crtc->head);
723 dev->mode_config.num_crtc--;
725 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
726 if (crtc->state && crtc->funcs->atomic_destroy_state)
727 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
729 EXPORT_SYMBOL(drm_crtc_cleanup);
732 * drm_crtc_index - find the index of a registered CRTC
733 * @crtc: CRTC to find index for
735 * Given a registered CRTC, return the index of that CRTC within a DRM
736 * device's list of CRTCs.
738 unsigned int drm_crtc_index(struct drm_crtc *crtc)
740 unsigned int index = 0;
741 struct drm_crtc *tmp;
743 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
752 EXPORT_SYMBOL(drm_crtc_index);
755 * drm_mode_remove - remove and free a mode
756 * @connector: connector list to modify
757 * @mode: mode to remove
759 * Remove @mode from @connector's mode list, then free it.
761 static void drm_mode_remove(struct drm_connector *connector,
762 struct drm_display_mode *mode)
764 list_del(&mode->head);
765 drm_mode_destroy(connector->dev, mode);
769 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
770 * @connector: connector to quwery
772 * The kernel supports per-connector configration of its consoles through
773 * use of the video= parameter. This function parses that option and
774 * extracts the user's specified mode (or enable/disable status) for a
775 * particular connector. This is typically only used during the early fbdev
778 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
780 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
783 if (fb_get_options(connector->name, &option))
786 if (!drm_mode_parse_command_line_for_connector(option,
794 switch (mode->force) {
798 case DRM_FORCE_ON_DIGITAL:
807 DRM_INFO("forcing %s connector %s\n", connector->name, s);
808 connector->force = mode->force;
811 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
813 mode->xres, mode->yres,
814 mode->refresh_specified ? mode->refresh : 60,
815 mode->rb ? " reduced blanking" : "",
816 mode->margins ? " with margins" : "",
817 mode->interlace ? " interlaced" : "");
821 * drm_connector_init - Init a preallocated connector
823 * @connector: the connector to init
824 * @funcs: callbacks for this connector
825 * @connector_type: user visible type of the connector
827 * Initialises a preallocated connector. Connectors should be
828 * subclassed as part of driver connector objects.
831 * Zero on success, error code on failure.
833 int drm_connector_init(struct drm_device *dev,
834 struct drm_connector *connector,
835 const struct drm_connector_funcs *funcs,
839 struct ida *connector_ida =
840 &drm_connector_enum_list[connector_type].ida;
842 drm_modeset_lock_all(dev);
844 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
848 connector->base.properties = &connector->properties;
849 connector->dev = dev;
850 connector->funcs = funcs;
851 connector->connector_type = connector_type;
852 connector->connector_type_id =
853 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
854 if (connector->connector_type_id < 0) {
855 ret = connector->connector_type_id;
859 kasprintf(GFP_KERNEL, "%s-%d",
860 drm_connector_enum_list[connector_type].name,
861 connector->connector_type_id);
862 if (!connector->name) {
867 INIT_LIST_HEAD(&connector->probed_modes);
868 INIT_LIST_HEAD(&connector->modes);
869 connector->edid_blob_ptr = NULL;
870 connector->status = connector_status_unknown;
872 drm_connector_get_cmdline_mode(connector);
874 /* We should add connectors at the end to avoid upsetting the connector
876 list_add_tail(&connector->head, &dev->mode_config.connector_list);
877 dev->mode_config.num_connector++;
879 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
880 drm_object_attach_property(&connector->base,
881 dev->mode_config.edid_property,
884 drm_object_attach_property(&connector->base,
885 dev->mode_config.dpms_property, 0);
887 connector->debugfs_entry = NULL;
891 drm_mode_object_put(dev, &connector->base);
894 drm_modeset_unlock_all(dev);
898 EXPORT_SYMBOL(drm_connector_init);
901 * drm_connector_cleanup - cleans up an initialised connector
902 * @connector: connector to cleanup
904 * Cleans up the connector but doesn't free the object.
906 void drm_connector_cleanup(struct drm_connector *connector)
908 struct drm_device *dev = connector->dev;
909 struct drm_display_mode *mode, *t;
911 if (connector->tile_group) {
912 drm_mode_put_tile_group(dev, connector->tile_group);
913 connector->tile_group = NULL;
916 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
917 drm_mode_remove(connector, mode);
919 list_for_each_entry_safe(mode, t, &connector->modes, head)
920 drm_mode_remove(connector, mode);
922 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
923 connector->connector_type_id);
925 drm_mode_object_put(dev, &connector->base);
926 kfree(connector->name);
927 connector->name = NULL;
928 list_del(&connector->head);
929 dev->mode_config.num_connector--;
931 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
932 if (connector->state && connector->funcs->atomic_destroy_state)
933 connector->funcs->atomic_destroy_state(connector,
936 EXPORT_SYMBOL(drm_connector_cleanup);
939 * drm_connector_index - find the index of a registered connector
940 * @connector: connector to find index for
942 * Given a registered connector, return the index of that connector within a DRM
943 * device's list of connectors.
945 unsigned int drm_connector_index(struct drm_connector *connector)
947 unsigned int index = 0;
948 struct drm_connector *tmp;
949 struct drm_mode_config *config = &connector->dev->mode_config;
951 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
953 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
954 if (tmp == connector)
962 EXPORT_SYMBOL(drm_connector_index);
965 * drm_connector_register - register a connector
966 * @connector: the connector to register
968 * Register userspace interfaces for a connector
971 * Zero on success, error code on failure.
973 int drm_connector_register(struct drm_connector *connector)
977 drm_mode_object_register(connector->dev, &connector->base);
979 ret = drm_sysfs_connector_add(connector);
983 ret = drm_debugfs_connector_add(connector);
985 drm_sysfs_connector_remove(connector);
991 EXPORT_SYMBOL(drm_connector_register);
994 * drm_connector_unregister - unregister a connector
995 * @connector: the connector to unregister
997 * Unregister userspace interfaces for a connector
999 void drm_connector_unregister(struct drm_connector *connector)
1001 drm_sysfs_connector_remove(connector);
1002 drm_debugfs_connector_remove(connector);
1004 EXPORT_SYMBOL(drm_connector_unregister);
1008 * drm_connector_unplug_all - unregister connector userspace interfaces
1011 * This function unregisters all connector userspace interfaces in sysfs. Should
1012 * be call when the device is disconnected, e.g. from an usb driver's
1013 * ->disconnect callback.
1015 void drm_connector_unplug_all(struct drm_device *dev)
1017 struct drm_connector *connector;
1019 /* taking the mode config mutex ends up in a clash with sysfs */
1020 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1021 drm_connector_unregister(connector);
1024 EXPORT_SYMBOL(drm_connector_unplug_all);
1027 * drm_bridge_init - initialize a drm transcoder/bridge
1029 * @bridge: transcoder/bridge to set up
1030 * @funcs: bridge function table
1032 * Initialises a preallocated bridge. Bridges should be
1033 * subclassed as part of driver connector objects.
1036 * Zero on success, error code on failure.
1038 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1039 const struct drm_bridge_funcs *funcs)
1043 drm_modeset_lock_all(dev);
1045 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1050 bridge->funcs = funcs;
1052 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1053 dev->mode_config.num_bridge++;
1056 drm_modeset_unlock_all(dev);
1059 EXPORT_SYMBOL(drm_bridge_init);
1062 * drm_bridge_cleanup - cleans up an initialised bridge
1063 * @bridge: bridge to cleanup
1065 * Cleans up the bridge but doesn't free the object.
1067 void drm_bridge_cleanup(struct drm_bridge *bridge)
1069 struct drm_device *dev = bridge->dev;
1071 drm_modeset_lock_all(dev);
1072 drm_mode_object_put(dev, &bridge->base);
1073 list_del(&bridge->head);
1074 dev->mode_config.num_bridge--;
1075 drm_modeset_unlock_all(dev);
1077 EXPORT_SYMBOL(drm_bridge_cleanup);
1080 * drm_encoder_init - Init a preallocated encoder
1082 * @encoder: the encoder to init
1083 * @funcs: callbacks for this encoder
1084 * @encoder_type: user visible type of the encoder
1086 * Initialises a preallocated encoder. Encoder should be
1087 * subclassed as part of driver encoder objects.
1090 * Zero on success, error code on failure.
1092 int drm_encoder_init(struct drm_device *dev,
1093 struct drm_encoder *encoder,
1094 const struct drm_encoder_funcs *funcs,
1099 drm_modeset_lock_all(dev);
1101 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1106 encoder->encoder_type = encoder_type;
1107 encoder->funcs = funcs;
1108 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1109 drm_encoder_enum_list[encoder_type].name,
1111 if (!encoder->name) {
1116 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1117 dev->mode_config.num_encoder++;
1121 drm_mode_object_put(dev, &encoder->base);
1124 drm_modeset_unlock_all(dev);
1128 EXPORT_SYMBOL(drm_encoder_init);
1131 * drm_encoder_cleanup - cleans up an initialised encoder
1132 * @encoder: encoder to cleanup
1134 * Cleans up the encoder but doesn't free the object.
1136 void drm_encoder_cleanup(struct drm_encoder *encoder)
1138 struct drm_device *dev = encoder->dev;
1139 drm_modeset_lock_all(dev);
1140 drm_mode_object_put(dev, &encoder->base);
1141 kfree(encoder->name);
1142 encoder->name = NULL;
1143 list_del(&encoder->head);
1144 dev->mode_config.num_encoder--;
1145 drm_modeset_unlock_all(dev);
1147 EXPORT_SYMBOL(drm_encoder_cleanup);
1150 * drm_universal_plane_init - Initialize a new universal plane object
1152 * @plane: plane object to init
1153 * @possible_crtcs: bitmask of possible CRTCs
1154 * @funcs: callbacks for the new plane
1155 * @formats: array of supported formats (%DRM_FORMAT_*)
1156 * @format_count: number of elements in @formats
1157 * @type: type of plane (overlay, primary, cursor)
1159 * Initializes a plane object of type @type.
1162 * Zero on success, error code on failure.
1164 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1165 unsigned long possible_crtcs,
1166 const struct drm_plane_funcs *funcs,
1167 const uint32_t *formats, uint32_t format_count,
1168 enum drm_plane_type type)
1172 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1176 drm_modeset_lock_init(&plane->mutex);
1178 plane->base.properties = &plane->properties;
1180 plane->funcs = funcs;
1181 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1183 if (!plane->format_types) {
1184 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1185 drm_mode_object_put(dev, &plane->base);
1189 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1190 plane->format_count = format_count;
1191 plane->possible_crtcs = possible_crtcs;
1194 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1195 dev->mode_config.num_total_plane++;
1196 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1197 dev->mode_config.num_overlay_plane++;
1199 drm_object_attach_property(&plane->base,
1200 dev->mode_config.plane_type_property,
1205 EXPORT_SYMBOL(drm_universal_plane_init);
1208 * drm_plane_init - Initialize a legacy plane
1210 * @plane: plane object to init
1211 * @possible_crtcs: bitmask of possible CRTCs
1212 * @funcs: callbacks for the new plane
1213 * @formats: array of supported formats (%DRM_FORMAT_*)
1214 * @format_count: number of elements in @formats
1215 * @is_primary: plane type (primary vs overlay)
1217 * Legacy API to initialize a DRM plane.
1219 * New drivers should call drm_universal_plane_init() instead.
1222 * Zero on success, error code on failure.
1224 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1225 unsigned long possible_crtcs,
1226 const struct drm_plane_funcs *funcs,
1227 const uint32_t *formats, uint32_t format_count,
1230 enum drm_plane_type type;
1232 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1233 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1234 formats, format_count, type);
1236 EXPORT_SYMBOL(drm_plane_init);
1239 * drm_plane_cleanup - Clean up the core plane usage
1240 * @plane: plane to cleanup
1242 * This function cleans up @plane and removes it from the DRM mode setting
1243 * core. Note that the function does *not* free the plane structure itself,
1244 * this is the responsibility of the caller.
1246 void drm_plane_cleanup(struct drm_plane *plane)
1248 struct drm_device *dev = plane->dev;
1250 drm_modeset_lock_all(dev);
1251 kfree(plane->format_types);
1252 drm_mode_object_put(dev, &plane->base);
1254 BUG_ON(list_empty(&plane->head));
1256 list_del(&plane->head);
1257 dev->mode_config.num_total_plane--;
1258 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1259 dev->mode_config.num_overlay_plane--;
1260 drm_modeset_unlock_all(dev);
1262 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1263 if (plane->state && plane->funcs->atomic_destroy_state)
1264 plane->funcs->atomic_destroy_state(plane, plane->state);
1266 EXPORT_SYMBOL(drm_plane_cleanup);
1269 * drm_plane_index - find the index of a registered plane
1270 * @plane: plane to find index for
1272 * Given a registered plane, return the index of that CRTC within a DRM
1273 * device's list of planes.
1275 unsigned int drm_plane_index(struct drm_plane *plane)
1277 unsigned int index = 0;
1278 struct drm_plane *tmp;
1280 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1289 EXPORT_SYMBOL(drm_plane_index);
1292 * drm_plane_force_disable - Forcibly disable a plane
1293 * @plane: plane to disable
1295 * Forces the plane to be disabled.
1297 * Used when the plane's current framebuffer is destroyed,
1298 * and when restoring fbdev mode.
1300 void drm_plane_force_disable(struct drm_plane *plane)
1307 plane->old_fb = plane->fb;
1308 ret = plane->funcs->disable_plane(plane);
1310 DRM_ERROR("failed to disable plane with busy fb\n");
1311 plane->old_fb = NULL;
1314 /* disconnect the plane from the fb and crtc: */
1315 __drm_framebuffer_unreference(plane->old_fb);
1316 plane->old_fb = NULL;
1320 EXPORT_SYMBOL(drm_plane_force_disable);
1322 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1324 struct drm_property *edid;
1325 struct drm_property *dpms;
1326 struct drm_property *dev_path;
1329 * Standard properties (apply to all connectors)
1331 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1332 DRM_MODE_PROP_IMMUTABLE,
1334 dev->mode_config.edid_property = edid;
1336 dpms = drm_property_create_enum(dev, 0,
1337 "DPMS", drm_dpms_enum_list,
1338 ARRAY_SIZE(drm_dpms_enum_list));
1339 dev->mode_config.dpms_property = dpms;
1341 dev_path = drm_property_create(dev,
1342 DRM_MODE_PROP_BLOB |
1343 DRM_MODE_PROP_IMMUTABLE,
1345 dev->mode_config.path_property = dev_path;
1350 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1352 struct drm_property *type;
1355 * Standard properties (apply to all planes)
1357 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1358 "type", drm_plane_type_enum_list,
1359 ARRAY_SIZE(drm_plane_type_enum_list));
1360 dev->mode_config.plane_type_property = type;
1366 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1369 * Called by a driver the first time a DVI-I connector is made.
1371 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1373 struct drm_property *dvi_i_selector;
1374 struct drm_property *dvi_i_subconnector;
1376 if (dev->mode_config.dvi_i_select_subconnector_property)
1380 drm_property_create_enum(dev, 0,
1381 "select subconnector",
1382 drm_dvi_i_select_enum_list,
1383 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1384 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1386 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1388 drm_dvi_i_subconnector_enum_list,
1389 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1390 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1394 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1397 * drm_create_tv_properties - create TV specific connector properties
1399 * @num_modes: number of different TV formats (modes) supported
1400 * @modes: array of pointers to strings containing name of each format
1402 * Called by a driver's TV initialization routine, this function creates
1403 * the TV specific connector properties for a given device. Caller is
1404 * responsible for allocating a list of format names and passing them to
1407 int drm_mode_create_tv_properties(struct drm_device *dev,
1408 unsigned int num_modes,
1411 struct drm_property *tv_selector;
1412 struct drm_property *tv_subconnector;
1415 if (dev->mode_config.tv_select_subconnector_property)
1419 * Basic connector properties
1421 tv_selector = drm_property_create_enum(dev, 0,
1422 "select subconnector",
1423 drm_tv_select_enum_list,
1424 ARRAY_SIZE(drm_tv_select_enum_list));
1425 dev->mode_config.tv_select_subconnector_property = tv_selector;
1428 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1430 drm_tv_subconnector_enum_list,
1431 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1432 dev->mode_config.tv_subconnector_property = tv_subconnector;
1435 * Other, TV specific properties: margins & TV modes.
1437 dev->mode_config.tv_left_margin_property =
1438 drm_property_create_range(dev, 0, "left margin", 0, 100);
1440 dev->mode_config.tv_right_margin_property =
1441 drm_property_create_range(dev, 0, "right margin", 0, 100);
1443 dev->mode_config.tv_top_margin_property =
1444 drm_property_create_range(dev, 0, "top margin", 0, 100);
1446 dev->mode_config.tv_bottom_margin_property =
1447 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1449 dev->mode_config.tv_mode_property =
1450 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1452 for (i = 0; i < num_modes; i++)
1453 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1456 dev->mode_config.tv_brightness_property =
1457 drm_property_create_range(dev, 0, "brightness", 0, 100);
1459 dev->mode_config.tv_contrast_property =
1460 drm_property_create_range(dev, 0, "contrast", 0, 100);
1462 dev->mode_config.tv_flicker_reduction_property =
1463 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1465 dev->mode_config.tv_overscan_property =
1466 drm_property_create_range(dev, 0, "overscan", 0, 100);
1468 dev->mode_config.tv_saturation_property =
1469 drm_property_create_range(dev, 0, "saturation", 0, 100);
1471 dev->mode_config.tv_hue_property =
1472 drm_property_create_range(dev, 0, "hue", 0, 100);
1476 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1479 * drm_mode_create_scaling_mode_property - create scaling mode property
1482 * Called by a driver the first time it's needed, must be attached to desired
1485 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1487 struct drm_property *scaling_mode;
1489 if (dev->mode_config.scaling_mode_property)
1493 drm_property_create_enum(dev, 0, "scaling mode",
1494 drm_scaling_mode_enum_list,
1495 ARRAY_SIZE(drm_scaling_mode_enum_list));
1497 dev->mode_config.scaling_mode_property = scaling_mode;
1501 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1504 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1507 * Called by a driver the first time it's needed, must be attached to desired
1511 * Zero on success, negative errno on failure.
1513 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1515 if (dev->mode_config.aspect_ratio_property)
1518 dev->mode_config.aspect_ratio_property =
1519 drm_property_create_enum(dev, 0, "aspect ratio",
1520 drm_aspect_ratio_enum_list,
1521 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1523 if (dev->mode_config.aspect_ratio_property == NULL)
1528 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1531 * drm_mode_create_dirty_property - create dirty property
1534 * Called by a driver the first time it's needed, must be attached to desired
1537 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1539 struct drm_property *dirty_info;
1541 if (dev->mode_config.dirty_info_property)
1545 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1547 drm_dirty_info_enum_list,
1548 ARRAY_SIZE(drm_dirty_info_enum_list));
1549 dev->mode_config.dirty_info_property = dirty_info;
1553 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1556 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1559 * Create the the suggested x/y offset property for connectors.
1561 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1563 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1566 dev->mode_config.suggested_x_property =
1567 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1569 dev->mode_config.suggested_y_property =
1570 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1572 if (dev->mode_config.suggested_x_property == NULL ||
1573 dev->mode_config.suggested_y_property == NULL)
1577 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1579 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1581 uint32_t total_objects = 0;
1583 total_objects += dev->mode_config.num_crtc;
1584 total_objects += dev->mode_config.num_connector;
1585 total_objects += dev->mode_config.num_encoder;
1586 total_objects += dev->mode_config.num_bridge;
1588 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1589 if (!group->id_list)
1592 group->num_crtcs = 0;
1593 group->num_connectors = 0;
1594 group->num_encoders = 0;
1595 group->num_bridges = 0;
1599 void drm_mode_group_destroy(struct drm_mode_group *group)
1601 kfree(group->id_list);
1602 group->id_list = NULL;
1606 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1607 * the drm core's responsibility to set up mode control groups.
1609 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1610 struct drm_mode_group *group)
1612 struct drm_crtc *crtc;
1613 struct drm_encoder *encoder;
1614 struct drm_connector *connector;
1615 struct drm_bridge *bridge;
1618 if ((ret = drm_mode_group_init(dev, group)))
1621 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1622 group->id_list[group->num_crtcs++] = crtc->base.id;
1624 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1625 group->id_list[group->num_crtcs + group->num_encoders++] =
1628 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1629 group->id_list[group->num_crtcs + group->num_encoders +
1630 group->num_connectors++] = connector->base.id;
1632 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1633 group->id_list[group->num_crtcs + group->num_encoders +
1634 group->num_connectors + group->num_bridges++] =
1639 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1641 void drm_reinit_primary_mode_group(struct drm_device *dev)
1643 drm_modeset_lock_all(dev);
1644 drm_mode_group_destroy(&dev->primary->mode_group);
1645 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1646 drm_modeset_unlock_all(dev);
1648 EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1651 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1652 * @out: drm_mode_modeinfo struct to return to the user
1653 * @in: drm_display_mode to use
1655 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1658 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1659 const struct drm_display_mode *in)
1661 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1662 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1663 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1664 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1665 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1666 "timing values too large for mode info\n");
1668 out->clock = in->clock;
1669 out->hdisplay = in->hdisplay;
1670 out->hsync_start = in->hsync_start;
1671 out->hsync_end = in->hsync_end;
1672 out->htotal = in->htotal;
1673 out->hskew = in->hskew;
1674 out->vdisplay = in->vdisplay;
1675 out->vsync_start = in->vsync_start;
1676 out->vsync_end = in->vsync_end;
1677 out->vtotal = in->vtotal;
1678 out->vscan = in->vscan;
1679 out->vrefresh = in->vrefresh;
1680 out->flags = in->flags;
1681 out->type = in->type;
1682 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1683 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1687 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1688 * @out: drm_display_mode to return to the user
1689 * @in: drm_mode_modeinfo to use
1691 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1695 * Zero on success, negative errno on failure.
1697 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1698 const struct drm_mode_modeinfo *in)
1700 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1703 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1706 out->clock = in->clock;
1707 out->hdisplay = in->hdisplay;
1708 out->hsync_start = in->hsync_start;
1709 out->hsync_end = in->hsync_end;
1710 out->htotal = in->htotal;
1711 out->hskew = in->hskew;
1712 out->vdisplay = in->vdisplay;
1713 out->vsync_start = in->vsync_start;
1714 out->vsync_end = in->vsync_end;
1715 out->vtotal = in->vtotal;
1716 out->vscan = in->vscan;
1717 out->vrefresh = in->vrefresh;
1718 out->flags = in->flags;
1719 out->type = in->type;
1720 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1721 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1727 * drm_mode_getresources - get graphics configuration
1728 * @dev: drm device for the ioctl
1729 * @data: data pointer for the ioctl
1730 * @file_priv: drm file for the ioctl call
1732 * Construct a set of configuration description structures and return
1733 * them to the user, including CRTC, connector and framebuffer configuration.
1735 * Called by the user via ioctl.
1738 * Zero on success, negative errno on failure.
1740 int drm_mode_getresources(struct drm_device *dev, void *data,
1741 struct drm_file *file_priv)
1743 struct drm_mode_card_res *card_res = data;
1744 struct list_head *lh;
1745 struct drm_framebuffer *fb;
1746 struct drm_connector *connector;
1747 struct drm_crtc *crtc;
1748 struct drm_encoder *encoder;
1750 int connector_count = 0;
1753 int encoder_count = 0;
1755 uint32_t __user *fb_id;
1756 uint32_t __user *crtc_id;
1757 uint32_t __user *connector_id;
1758 uint32_t __user *encoder_id;
1759 struct drm_mode_group *mode_group;
1761 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1765 mutex_lock(&file_priv->fbs_lock);
1767 * For the non-control nodes we need to limit the list of resources
1768 * by IDs in the group list for this node
1770 list_for_each(lh, &file_priv->fbs)
1773 /* handle this in 4 parts */
1775 if (card_res->count_fbs >= fb_count) {
1777 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1778 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1779 if (put_user(fb->base.id, fb_id + copied)) {
1780 mutex_unlock(&file_priv->fbs_lock);
1786 card_res->count_fbs = fb_count;
1787 mutex_unlock(&file_priv->fbs_lock);
1789 /* mode_config.mutex protects the connector list against e.g. DP MST
1790 * connector hot-adding. CRTC/Plane lists are invariant. */
1791 mutex_lock(&dev->mode_config.mutex);
1792 if (!drm_is_primary_client(file_priv)) {
1795 list_for_each(lh, &dev->mode_config.crtc_list)
1798 list_for_each(lh, &dev->mode_config.connector_list)
1801 list_for_each(lh, &dev->mode_config.encoder_list)
1805 mode_group = &file_priv->master->minor->mode_group;
1806 crtc_count = mode_group->num_crtcs;
1807 connector_count = mode_group->num_connectors;
1808 encoder_count = mode_group->num_encoders;
1811 card_res->max_height = dev->mode_config.max_height;
1812 card_res->min_height = dev->mode_config.min_height;
1813 card_res->max_width = dev->mode_config.max_width;
1814 card_res->min_width = dev->mode_config.min_width;
1817 if (card_res->count_crtcs >= crtc_count) {
1819 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1821 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1823 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1824 if (put_user(crtc->base.id, crtc_id + copied)) {
1831 for (i = 0; i < mode_group->num_crtcs; i++) {
1832 if (put_user(mode_group->id_list[i],
1833 crtc_id + copied)) {
1841 card_res->count_crtcs = crtc_count;
1844 if (card_res->count_encoders >= encoder_count) {
1846 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1848 list_for_each_entry(encoder,
1849 &dev->mode_config.encoder_list,
1851 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1853 if (put_user(encoder->base.id, encoder_id +
1861 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1862 if (put_user(mode_group->id_list[i],
1863 encoder_id + copied)) {
1872 card_res->count_encoders = encoder_count;
1875 if (card_res->count_connectors >= connector_count) {
1877 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1879 list_for_each_entry(connector,
1880 &dev->mode_config.connector_list,
1882 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1885 if (put_user(connector->base.id,
1886 connector_id + copied)) {
1893 int start = mode_group->num_crtcs +
1894 mode_group->num_encoders;
1895 for (i = start; i < start + mode_group->num_connectors; i++) {
1896 if (put_user(mode_group->id_list[i],
1897 connector_id + copied)) {
1905 card_res->count_connectors = connector_count;
1907 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1908 card_res->count_connectors, card_res->count_encoders);
1911 mutex_unlock(&dev->mode_config.mutex);
1916 * drm_mode_getcrtc - get CRTC configuration
1917 * @dev: drm device for the ioctl
1918 * @data: data pointer for the ioctl
1919 * @file_priv: drm file for the ioctl call
1921 * Construct a CRTC configuration structure to return to the user.
1923 * Called by the user via ioctl.
1926 * Zero on success, negative errno on failure.
1928 int drm_mode_getcrtc(struct drm_device *dev,
1929 void *data, struct drm_file *file_priv)
1931 struct drm_mode_crtc *crtc_resp = data;
1932 struct drm_crtc *crtc;
1934 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1937 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1941 drm_modeset_lock_crtc(crtc, crtc->primary);
1942 crtc_resp->x = crtc->x;
1943 crtc_resp->y = crtc->y;
1944 crtc_resp->gamma_size = crtc->gamma_size;
1945 if (crtc->primary->fb)
1946 crtc_resp->fb_id = crtc->primary->fb->base.id;
1948 crtc_resp->fb_id = 0;
1950 if (crtc->enabled) {
1952 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1953 crtc_resp->mode_valid = 1;
1956 crtc_resp->mode_valid = 0;
1958 drm_modeset_unlock_crtc(crtc);
1963 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1964 const struct drm_file *file_priv)
1967 * If user-space hasn't configured the driver to expose the stereo 3D
1968 * modes, don't expose them.
1970 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1976 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
1978 /* For atomic drivers only state objects are synchronously updated and
1979 * protected by modeset locks, so check those first. */
1980 if (connector->state)
1981 return connector->state->best_encoder;
1982 return connector->encoder;
1986 * drm_mode_getconnector - get connector configuration
1987 * @dev: drm device for the ioctl
1988 * @data: data pointer for the ioctl
1989 * @file_priv: drm file for the ioctl call
1991 * Construct a connector configuration structure to return to the user.
1993 * Called by the user via ioctl.
1996 * Zero on success, negative errno on failure.
1998 int drm_mode_getconnector(struct drm_device *dev, void *data,
1999 struct drm_file *file_priv)
2001 struct drm_mode_get_connector *out_resp = data;
2002 struct drm_connector *connector;
2003 struct drm_encoder *encoder;
2004 struct drm_display_mode *mode;
2006 int props_count = 0;
2007 int encoders_count = 0;
2011 struct drm_mode_modeinfo u_mode;
2012 struct drm_mode_modeinfo __user *mode_ptr;
2013 uint32_t __user *prop_ptr;
2014 uint64_t __user *prop_values;
2015 uint32_t __user *encoder_ptr;
2017 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2020 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2022 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2024 mutex_lock(&dev->mode_config.mutex);
2026 connector = drm_connector_find(dev, out_resp->connector_id);
2032 props_count = connector->properties.count;
2034 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2035 if (connector->encoder_ids[i] != 0) {
2040 if (out_resp->count_modes == 0) {
2041 connector->funcs->fill_modes(connector,
2042 dev->mode_config.max_width,
2043 dev->mode_config.max_height);
2046 /* delayed so we get modes regardless of pre-fill_modes state */
2047 list_for_each_entry(mode, &connector->modes, head)
2048 if (drm_mode_expose_to_userspace(mode, file_priv))
2051 out_resp->connector_id = connector->base.id;
2052 out_resp->connector_type = connector->connector_type;
2053 out_resp->connector_type_id = connector->connector_type_id;
2054 out_resp->mm_width = connector->display_info.width_mm;
2055 out_resp->mm_height = connector->display_info.height_mm;
2056 out_resp->subpixel = connector->display_info.subpixel_order;
2057 out_resp->connection = connector->status;
2058 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2060 encoder = drm_connector_get_encoder(connector);
2062 out_resp->encoder_id = encoder->base.id;
2064 out_resp->encoder_id = 0;
2065 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2068 * This ioctl is called twice, once to determine how much space is
2069 * needed, and the 2nd time to fill it.
2071 if ((out_resp->count_modes >= mode_count) && mode_count) {
2073 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2074 list_for_each_entry(mode, &connector->modes, head) {
2075 if (!drm_mode_expose_to_userspace(mode, file_priv))
2078 drm_crtc_convert_to_umode(&u_mode, mode);
2079 if (copy_to_user(mode_ptr + copied,
2080 &u_mode, sizeof(u_mode))) {
2087 out_resp->count_modes = mode_count;
2089 if ((out_resp->count_props >= props_count) && props_count) {
2091 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
2092 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
2093 for (i = 0; i < connector->properties.count; i++) {
2094 if (put_user(connector->properties.ids[i],
2095 prop_ptr + copied)) {
2100 if (put_user(connector->properties.values[i],
2101 prop_values + copied)) {
2108 out_resp->count_props = props_count;
2110 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2112 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2113 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2114 if (connector->encoder_ids[i] != 0) {
2115 if (put_user(connector->encoder_ids[i],
2116 encoder_ptr + copied)) {
2124 out_resp->count_encoders = encoders_count;
2127 mutex_unlock(&dev->mode_config.mutex);
2132 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2134 struct drm_connector *connector;
2135 struct drm_device *dev = encoder->dev;
2136 bool uses_atomic = false;
2138 /* For atomic drivers only state objects are synchronously updated and
2139 * protected by modeset locks, so check those first. */
2140 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2141 if (!connector->state)
2146 if (connector->state->best_encoder != encoder)
2149 return connector->state->crtc;
2152 /* Don't return stale data (e.g. pending async disable). */
2156 return encoder->crtc;
2160 * drm_mode_getencoder - get encoder configuration
2161 * @dev: drm device for the ioctl
2162 * @data: data pointer for the ioctl
2163 * @file_priv: drm file for the ioctl call
2165 * Construct a encoder configuration structure to return to the user.
2167 * Called by the user via ioctl.
2170 * Zero on success, negative errno on failure.
2172 int drm_mode_getencoder(struct drm_device *dev, void *data,
2173 struct drm_file *file_priv)
2175 struct drm_mode_get_encoder *enc_resp = data;
2176 struct drm_encoder *encoder;
2177 struct drm_crtc *crtc;
2179 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2182 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2186 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2187 crtc = drm_encoder_get_crtc(encoder);
2189 enc_resp->crtc_id = crtc->base.id;
2190 else if (encoder->crtc)
2191 enc_resp->crtc_id = encoder->crtc->base.id;
2193 enc_resp->crtc_id = 0;
2194 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2196 enc_resp->encoder_type = encoder->encoder_type;
2197 enc_resp->encoder_id = encoder->base.id;
2198 enc_resp->possible_crtcs = encoder->possible_crtcs;
2199 enc_resp->possible_clones = encoder->possible_clones;
2205 * drm_mode_getplane_res - enumerate all plane resources
2208 * @file_priv: DRM file info
2210 * Construct a list of plane ids to return to the user.
2212 * Called by the user via ioctl.
2215 * Zero on success, negative errno on failure.
2217 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2218 struct drm_file *file_priv)
2220 struct drm_mode_get_plane_res *plane_resp = data;
2221 struct drm_mode_config *config;
2222 struct drm_plane *plane;
2223 uint32_t __user *plane_ptr;
2225 unsigned num_planes;
2227 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2230 config = &dev->mode_config;
2232 if (file_priv->universal_planes)
2233 num_planes = config->num_total_plane;
2235 num_planes = config->num_overlay_plane;
2238 * This ioctl is called twice, once to determine how much space is
2239 * needed, and the 2nd time to fill it.
2242 (plane_resp->count_planes >= num_planes)) {
2243 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2245 /* Plane lists are invariant, no locking needed. */
2246 list_for_each_entry(plane, &config->plane_list, head) {
2248 * Unless userspace set the 'universal planes'
2249 * capability bit, only advertise overlays.
2251 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2252 !file_priv->universal_planes)
2255 if (put_user(plane->base.id, plane_ptr + copied))
2260 plane_resp->count_planes = num_planes;
2266 * drm_mode_getplane - get plane configuration
2269 * @file_priv: DRM file info
2271 * Construct a plane configuration structure to return to the user.
2273 * Called by the user via ioctl.
2276 * Zero on success, negative errno on failure.
2278 int drm_mode_getplane(struct drm_device *dev, void *data,
2279 struct drm_file *file_priv)
2281 struct drm_mode_get_plane *plane_resp = data;
2282 struct drm_plane *plane;
2283 uint32_t __user *format_ptr;
2285 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2288 plane = drm_plane_find(dev, plane_resp->plane_id);
2292 drm_modeset_lock(&plane->mutex, NULL);
2294 plane_resp->crtc_id = plane->crtc->base.id;
2296 plane_resp->crtc_id = 0;
2299 plane_resp->fb_id = plane->fb->base.id;
2301 plane_resp->fb_id = 0;
2302 drm_modeset_unlock(&plane->mutex);
2304 plane_resp->plane_id = plane->base.id;
2305 plane_resp->possible_crtcs = plane->possible_crtcs;
2306 plane_resp->gamma_size = 0;
2309 * This ioctl is called twice, once to determine how much space is
2310 * needed, and the 2nd time to fill it.
2312 if (plane->format_count &&
2313 (plane_resp->count_format_types >= plane->format_count)) {
2314 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2315 if (copy_to_user(format_ptr,
2316 plane->format_types,
2317 sizeof(uint32_t) * plane->format_count)) {
2321 plane_resp->count_format_types = plane->format_count;
2327 * setplane_internal - setplane handler for internal callers
2329 * Note that we assume an extra reference has already been taken on fb. If the
2330 * update fails, this reference will be dropped before return; if it succeeds,
2331 * the previous framebuffer (if any) will be unreferenced instead.
2333 * src_{x,y,w,h} are provided in 16.16 fixed point format
2335 static int __setplane_internal(struct drm_plane *plane,
2336 struct drm_crtc *crtc,
2337 struct drm_framebuffer *fb,
2338 int32_t crtc_x, int32_t crtc_y,
2339 uint32_t crtc_w, uint32_t crtc_h,
2340 /* src_{x,y,w,h} values are 16.16 fixed point */
2341 uint32_t src_x, uint32_t src_y,
2342 uint32_t src_w, uint32_t src_h)
2345 unsigned int fb_width, fb_height;
2348 /* No fb means shut it down */
2350 plane->old_fb = plane->fb;
2351 ret = plane->funcs->disable_plane(plane);
2356 plane->old_fb = NULL;
2361 /* Check whether this plane is usable on this CRTC */
2362 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2363 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2368 /* Check whether this plane supports the fb pixel format. */
2369 for (i = 0; i < plane->format_count; i++)
2370 if (fb->pixel_format == plane->format_types[i])
2372 if (i == plane->format_count) {
2373 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2374 drm_get_format_name(fb->pixel_format));
2379 fb_width = fb->width << 16;
2380 fb_height = fb->height << 16;
2382 /* Make sure source coordinates are inside the fb. */
2383 if (src_w > fb_width ||
2384 src_x > fb_width - src_w ||
2385 src_h > fb_height ||
2386 src_y > fb_height - src_h) {
2387 DRM_DEBUG_KMS("Invalid source coordinates "
2388 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2389 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2390 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2391 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2392 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2397 plane->old_fb = plane->fb;
2398 ret = plane->funcs->update_plane(plane, crtc, fb,
2399 crtc_x, crtc_y, crtc_w, crtc_h,
2400 src_x, src_y, src_w, src_h);
2406 plane->old_fb = NULL;
2411 drm_framebuffer_unreference(fb);
2413 drm_framebuffer_unreference(plane->old_fb);
2414 plane->old_fb = NULL;
2419 static int setplane_internal(struct drm_plane *plane,
2420 struct drm_crtc *crtc,
2421 struct drm_framebuffer *fb,
2422 int32_t crtc_x, int32_t crtc_y,
2423 uint32_t crtc_w, uint32_t crtc_h,
2424 /* src_{x,y,w,h} values are 16.16 fixed point */
2425 uint32_t src_x, uint32_t src_y,
2426 uint32_t src_w, uint32_t src_h)
2430 drm_modeset_lock_all(plane->dev);
2431 ret = __setplane_internal(plane, crtc, fb,
2432 crtc_x, crtc_y, crtc_w, crtc_h,
2433 src_x, src_y, src_w, src_h);
2434 drm_modeset_unlock_all(plane->dev);
2440 * drm_mode_setplane - configure a plane's configuration
2442 * @data: ioctl data*
2443 * @file_priv: DRM file info
2445 * Set plane configuration, including placement, fb, scaling, and other factors.
2446 * Or pass a NULL fb to disable (planes may be disabled without providing a
2450 * Zero on success, negative errno on failure.
2452 int drm_mode_setplane(struct drm_device *dev, void *data,
2453 struct drm_file *file_priv)
2455 struct drm_mode_set_plane *plane_req = data;
2456 struct drm_plane *plane;
2457 struct drm_crtc *crtc = NULL;
2458 struct drm_framebuffer *fb = NULL;
2460 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2463 /* Give drivers some help against integer overflows */
2464 if (plane_req->crtc_w > INT_MAX ||
2465 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2466 plane_req->crtc_h > INT_MAX ||
2467 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2468 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2469 plane_req->crtc_w, plane_req->crtc_h,
2470 plane_req->crtc_x, plane_req->crtc_y);
2475 * First, find the plane, crtc, and fb objects. If not available,
2476 * we don't bother to call the driver.
2478 plane = drm_plane_find(dev, plane_req->plane_id);
2480 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2481 plane_req->plane_id);
2485 if (plane_req->fb_id) {
2486 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2488 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2493 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2495 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2496 plane_req->crtc_id);
2502 * setplane_internal will take care of deref'ing either the old or new
2503 * framebuffer depending on success.
2505 return setplane_internal(plane, crtc, fb,
2506 plane_req->crtc_x, plane_req->crtc_y,
2507 plane_req->crtc_w, plane_req->crtc_h,
2508 plane_req->src_x, plane_req->src_y,
2509 plane_req->src_w, plane_req->src_h);
2513 * drm_mode_set_config_internal - helper to call ->set_config
2514 * @set: modeset config to set
2516 * This is a little helper to wrap internal calls to the ->set_config driver
2517 * interface. The only thing it adds is correct refcounting dance.
2520 * Zero on success, negative errno on failure.
2522 int drm_mode_set_config_internal(struct drm_mode_set *set)
2524 struct drm_crtc *crtc = set->crtc;
2525 struct drm_framebuffer *fb;
2526 struct drm_crtc *tmp;
2530 * NOTE: ->set_config can also disable other crtcs (if we steal all
2531 * connectors from it), hence we need to refcount the fbs across all
2532 * crtcs. Atomic modeset will have saner semantics ...
2534 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2535 tmp->primary->old_fb = tmp->primary->fb;
2539 ret = crtc->funcs->set_config(set);
2541 crtc->primary->crtc = crtc;
2542 crtc->primary->fb = fb;
2545 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2546 if (tmp->primary->fb)
2547 drm_framebuffer_reference(tmp->primary->fb);
2548 if (tmp->primary->old_fb)
2549 drm_framebuffer_unreference(tmp->primary->old_fb);
2550 tmp->primary->old_fb = NULL;
2555 EXPORT_SYMBOL(drm_mode_set_config_internal);
2558 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2560 * @crtc: CRTC that framebuffer will be displayed on
2563 * @mode: mode that framebuffer will be displayed under
2564 * @fb: framebuffer to check size of
2566 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2568 const struct drm_display_mode *mode,
2569 const struct drm_framebuffer *fb)
2572 int hdisplay, vdisplay;
2574 hdisplay = mode->hdisplay;
2575 vdisplay = mode->vdisplay;
2577 if (drm_mode_is_stereo(mode)) {
2578 struct drm_display_mode adjusted = *mode;
2580 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2581 hdisplay = adjusted.crtc_hdisplay;
2582 vdisplay = adjusted.crtc_vdisplay;
2585 if (crtc->invert_dimensions)
2586 swap(hdisplay, vdisplay);
2588 if (hdisplay > fb->width ||
2589 vdisplay > fb->height ||
2590 x > fb->width - hdisplay ||
2591 y > fb->height - vdisplay) {
2592 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2593 fb->width, fb->height, hdisplay, vdisplay, x, y,
2594 crtc->invert_dimensions ? " (inverted)" : "");
2600 EXPORT_SYMBOL(drm_crtc_check_viewport);
2603 * drm_mode_setcrtc - set CRTC configuration
2604 * @dev: drm device for the ioctl
2605 * @data: data pointer for the ioctl
2606 * @file_priv: drm file for the ioctl call
2608 * Build a new CRTC configuration based on user request.
2610 * Called by the user via ioctl.
2613 * Zero on success, negative errno on failure.
2615 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2616 struct drm_file *file_priv)
2618 struct drm_mode_config *config = &dev->mode_config;
2619 struct drm_mode_crtc *crtc_req = data;
2620 struct drm_crtc *crtc;
2621 struct drm_connector **connector_set = NULL, *connector;
2622 struct drm_framebuffer *fb = NULL;
2623 struct drm_display_mode *mode = NULL;
2624 struct drm_mode_set set;
2625 uint32_t __user *set_connectors_ptr;
2629 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2632 /* For some reason crtc x/y offsets are signed internally. */
2633 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2636 drm_modeset_lock_all(dev);
2637 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2639 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2643 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2645 if (crtc_req->mode_valid) {
2646 /* If we have a mode we need a framebuffer. */
2647 /* If we pass -1, set the mode with the currently bound fb */
2648 if (crtc_req->fb_id == -1) {
2649 if (!crtc->primary->fb) {
2650 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2654 fb = crtc->primary->fb;
2655 /* Make refcounting symmetric with the lookup path. */
2656 drm_framebuffer_reference(fb);
2658 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2660 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2667 mode = drm_mode_create(dev);
2673 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2675 DRM_DEBUG_KMS("Invalid mode\n");
2679 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2681 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2688 if (crtc_req->count_connectors == 0 && mode) {
2689 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2694 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2695 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2696 crtc_req->count_connectors);
2701 if (crtc_req->count_connectors > 0) {
2704 /* Avoid unbounded kernel memory allocation */
2705 if (crtc_req->count_connectors > config->num_connector) {
2710 connector_set = kmalloc(crtc_req->count_connectors *
2711 sizeof(struct drm_connector *),
2713 if (!connector_set) {
2718 for (i = 0; i < crtc_req->count_connectors; i++) {
2719 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2720 if (get_user(out_id, &set_connectors_ptr[i])) {
2725 connector = drm_connector_find(dev, out_id);
2727 DRM_DEBUG_KMS("Connector id %d unknown\n",
2732 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2736 connector_set[i] = connector;
2741 set.x = crtc_req->x;
2742 set.y = crtc_req->y;
2744 set.connectors = connector_set;
2745 set.num_connectors = crtc_req->count_connectors;
2747 ret = drm_mode_set_config_internal(&set);
2751 drm_framebuffer_unreference(fb);
2753 kfree(connector_set);
2754 drm_mode_destroy(dev, mode);
2755 drm_modeset_unlock_all(dev);
2760 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2761 * universal plane handler call
2762 * @crtc: crtc to update cursor for
2763 * @req: data pointer for the ioctl
2764 * @file_priv: drm file for the ioctl call
2766 * Legacy cursor ioctl's work directly with driver buffer handles. To
2767 * translate legacy ioctl calls into universal plane handler calls, we need to
2768 * wrap the native buffer handle in a drm_framebuffer.
2770 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2771 * buffer with a pitch of 4*width; the universal plane interface should be used
2772 * directly in cases where the hardware can support other buffer settings and
2773 * userspace wants to make use of these capabilities.
2776 * Zero on success, negative errno on failure.
2778 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2779 struct drm_mode_cursor2 *req,
2780 struct drm_file *file_priv)
2782 struct drm_device *dev = crtc->dev;
2783 struct drm_framebuffer *fb = NULL;
2784 struct drm_mode_fb_cmd2 fbreq = {
2785 .width = req->width,
2786 .height = req->height,
2787 .pixel_format = DRM_FORMAT_ARGB8888,
2788 .pitches = { req->width * 4 },
2789 .handles = { req->handle },
2791 int32_t crtc_x, crtc_y;
2792 uint32_t crtc_w = 0, crtc_h = 0;
2793 uint32_t src_w = 0, src_h = 0;
2796 BUG_ON(!crtc->cursor);
2797 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2800 * Obtain fb we'll be using (either new or existing) and take an extra
2801 * reference to it if fb != null. setplane will take care of dropping
2802 * the reference if the plane update fails.
2804 if (req->flags & DRM_MODE_CURSOR_BO) {
2806 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2808 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2812 drm_framebuffer_reference(fb);
2817 fb = crtc->cursor->fb;
2819 drm_framebuffer_reference(fb);
2822 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2826 crtc_x = crtc->cursor_x;
2827 crtc_y = crtc->cursor_y;
2832 crtc_h = fb->height;
2833 src_w = fb->width << 16;
2834 src_h = fb->height << 16;
2838 * setplane_internal will take care of deref'ing either the old or new
2839 * framebuffer depending on success.
2841 ret = __setplane_internal(crtc->cursor, crtc, fb,
2842 crtc_x, crtc_y, crtc_w, crtc_h,
2843 0, 0, src_w, src_h);
2845 /* Update successful; save new cursor position, if necessary */
2846 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2847 crtc->cursor_x = req->x;
2848 crtc->cursor_y = req->y;
2854 static int drm_mode_cursor_common(struct drm_device *dev,
2855 struct drm_mode_cursor2 *req,
2856 struct drm_file *file_priv)
2858 struct drm_crtc *crtc;
2861 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2864 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2867 crtc = drm_crtc_find(dev, req->crtc_id);
2869 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2874 * If this crtc has a universal cursor plane, call that plane's update
2875 * handler rather than using legacy cursor handlers.
2877 drm_modeset_lock_crtc(crtc, crtc->cursor);
2879 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2883 if (req->flags & DRM_MODE_CURSOR_BO) {
2884 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2888 /* Turns off the cursor if handle is 0 */
2889 if (crtc->funcs->cursor_set2)
2890 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2891 req->width, req->height, req->hot_x, req->hot_y);
2893 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2894 req->width, req->height);
2897 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2898 if (crtc->funcs->cursor_move) {
2899 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2906 drm_modeset_unlock_crtc(crtc);
2914 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2915 * @dev: drm device for the ioctl
2916 * @data: data pointer for the ioctl
2917 * @file_priv: drm file for the ioctl call
2919 * Set the cursor configuration based on user request.
2921 * Called by the user via ioctl.
2924 * Zero on success, negative errno on failure.
2926 int drm_mode_cursor_ioctl(struct drm_device *dev,
2927 void *data, struct drm_file *file_priv)
2929 struct drm_mode_cursor *req = data;
2930 struct drm_mode_cursor2 new_req;
2932 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2933 new_req.hot_x = new_req.hot_y = 0;
2935 return drm_mode_cursor_common(dev, &new_req, file_priv);
2939 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2940 * @dev: drm device for the ioctl
2941 * @data: data pointer for the ioctl
2942 * @file_priv: drm file for the ioctl call
2944 * Set the cursor configuration based on user request. This implements the 2nd
2945 * version of the cursor ioctl, which allows userspace to additionally specify
2946 * the hotspot of the pointer.
2948 * Called by the user via ioctl.
2951 * Zero on success, negative errno on failure.
2953 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2954 void *data, struct drm_file *file_priv)
2956 struct drm_mode_cursor2 *req = data;
2957 return drm_mode_cursor_common(dev, req, file_priv);
2961 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2962 * @bpp: bits per pixels
2963 * @depth: bit depth per pixel
2965 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2966 * Useful in fbdev emulation code, since that deals in those values.
2968 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2974 fmt = DRM_FORMAT_C8;
2978 fmt = DRM_FORMAT_XRGB1555;
2980 fmt = DRM_FORMAT_RGB565;
2983 fmt = DRM_FORMAT_RGB888;
2987 fmt = DRM_FORMAT_XRGB8888;
2988 else if (depth == 30)
2989 fmt = DRM_FORMAT_XRGB2101010;
2991 fmt = DRM_FORMAT_ARGB8888;
2994 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2995 fmt = DRM_FORMAT_XRGB8888;
3001 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3004 * drm_mode_addfb - add an FB to the graphics configuration
3005 * @dev: drm device for the ioctl
3006 * @data: data pointer for the ioctl
3007 * @file_priv: drm file for the ioctl call
3009 * Add a new FB to the specified CRTC, given a user request. This is the
3010 * original addfb ioctl which only supported RGB formats.
3012 * Called by the user via ioctl.
3015 * Zero on success, negative errno on failure.
3017 int drm_mode_addfb(struct drm_device *dev,
3018 void *data, struct drm_file *file_priv)
3020 struct drm_mode_fb_cmd *or = data;
3021 struct drm_mode_fb_cmd2 r = {};
3024 /* convert to new format and call new ioctl */
3025 r.fb_id = or->fb_id;
3026 r.width = or->width;
3027 r.height = or->height;
3028 r.pitches[0] = or->pitch;
3029 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3030 r.handles[0] = or->handle;
3032 ret = drm_mode_addfb2(dev, &r, file_priv);
3036 or->fb_id = r.fb_id;
3041 static int format_check(const struct drm_mode_fb_cmd2 *r)
3043 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3047 case DRM_FORMAT_RGB332:
3048 case DRM_FORMAT_BGR233:
3049 case DRM_FORMAT_XRGB4444:
3050 case DRM_FORMAT_XBGR4444:
3051 case DRM_FORMAT_RGBX4444:
3052 case DRM_FORMAT_BGRX4444:
3053 case DRM_FORMAT_ARGB4444:
3054 case DRM_FORMAT_ABGR4444:
3055 case DRM_FORMAT_RGBA4444:
3056 case DRM_FORMAT_BGRA4444:
3057 case DRM_FORMAT_XRGB1555:
3058 case DRM_FORMAT_XBGR1555:
3059 case DRM_FORMAT_RGBX5551:
3060 case DRM_FORMAT_BGRX5551:
3061 case DRM_FORMAT_ARGB1555:
3062 case DRM_FORMAT_ABGR1555:
3063 case DRM_FORMAT_RGBA5551:
3064 case DRM_FORMAT_BGRA5551:
3065 case DRM_FORMAT_RGB565:
3066 case DRM_FORMAT_BGR565:
3067 case DRM_FORMAT_RGB888:
3068 case DRM_FORMAT_BGR888:
3069 case DRM_FORMAT_XRGB8888:
3070 case DRM_FORMAT_XBGR8888:
3071 case DRM_FORMAT_RGBX8888:
3072 case DRM_FORMAT_BGRX8888:
3073 case DRM_FORMAT_ARGB8888:
3074 case DRM_FORMAT_ABGR8888:
3075 case DRM_FORMAT_RGBA8888:
3076 case DRM_FORMAT_BGRA8888:
3077 case DRM_FORMAT_XRGB2101010:
3078 case DRM_FORMAT_XBGR2101010:
3079 case DRM_FORMAT_RGBX1010102:
3080 case DRM_FORMAT_BGRX1010102:
3081 case DRM_FORMAT_ARGB2101010:
3082 case DRM_FORMAT_ABGR2101010:
3083 case DRM_FORMAT_RGBA1010102:
3084 case DRM_FORMAT_BGRA1010102:
3085 case DRM_FORMAT_YUYV:
3086 case DRM_FORMAT_YVYU:
3087 case DRM_FORMAT_UYVY:
3088 case DRM_FORMAT_VYUY:
3089 case DRM_FORMAT_AYUV:
3090 case DRM_FORMAT_NV12:
3091 case DRM_FORMAT_NV21:
3092 case DRM_FORMAT_NV16:
3093 case DRM_FORMAT_NV61:
3094 case DRM_FORMAT_NV24:
3095 case DRM_FORMAT_NV42:
3096 case DRM_FORMAT_YUV410:
3097 case DRM_FORMAT_YVU410:
3098 case DRM_FORMAT_YUV411:
3099 case DRM_FORMAT_YVU411:
3100 case DRM_FORMAT_YUV420:
3101 case DRM_FORMAT_YVU420:
3102 case DRM_FORMAT_YUV422:
3103 case DRM_FORMAT_YVU422:
3104 case DRM_FORMAT_YUV444:
3105 case DRM_FORMAT_YVU444:
3108 DRM_DEBUG_KMS("invalid pixel format %s\n",
3109 drm_get_format_name(r->pixel_format));
3114 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3116 int ret, hsub, vsub, num_planes, i;
3118 ret = format_check(r);
3120 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3121 drm_get_format_name(r->pixel_format));
3125 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3126 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3127 num_planes = drm_format_num_planes(r->pixel_format);
3129 if (r->width == 0 || r->width % hsub) {
3130 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3134 if (r->height == 0 || r->height % vsub) {
3135 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3139 for (i = 0; i < num_planes; i++) {
3140 unsigned int width = r->width / (i != 0 ? hsub : 1);
3141 unsigned int height = r->height / (i != 0 ? vsub : 1);
3142 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3144 if (!r->handles[i]) {
3145 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3149 if ((uint64_t) width * cpp > UINT_MAX)
3152 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3155 if (r->pitches[i] < width * cpp) {
3156 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3164 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3165 struct drm_mode_fb_cmd2 *r,
3166 struct drm_file *file_priv)
3168 struct drm_mode_config *config = &dev->mode_config;
3169 struct drm_framebuffer *fb;
3172 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3173 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3174 return ERR_PTR(-EINVAL);
3177 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3178 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3179 r->width, config->min_width, config->max_width);
3180 return ERR_PTR(-EINVAL);
3182 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3183 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3184 r->height, config->min_height, config->max_height);
3185 return ERR_PTR(-EINVAL);
3188 ret = framebuffer_check(r);
3190 return ERR_PTR(ret);
3192 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3194 DRM_DEBUG_KMS("could not create framebuffer\n");
3198 mutex_lock(&file_priv->fbs_lock);
3199 r->fb_id = fb->base.id;
3200 list_add(&fb->filp_head, &file_priv->fbs);
3201 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3202 mutex_unlock(&file_priv->fbs_lock);
3208 * drm_mode_addfb2 - add an FB to the graphics configuration
3209 * @dev: drm device for the ioctl
3210 * @data: data pointer for the ioctl
3211 * @file_priv: drm file for the ioctl call
3213 * Add a new FB to the specified CRTC, given a user request with format. This is
3214 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3215 * and uses fourcc codes as pixel format specifiers.
3217 * Called by the user via ioctl.
3220 * Zero on success, negative errno on failure.
3222 int drm_mode_addfb2(struct drm_device *dev,
3223 void *data, struct drm_file *file_priv)
3225 struct drm_framebuffer *fb;
3227 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3230 fb = add_framebuffer_internal(dev, data, file_priv);
3238 * drm_mode_rmfb - remove an FB from the configuration
3239 * @dev: drm device for the ioctl
3240 * @data: data pointer for the ioctl
3241 * @file_priv: drm file for the ioctl call
3243 * Remove the FB specified by the user.
3245 * Called by the user via ioctl.
3248 * Zero on success, negative errno on failure.
3250 int drm_mode_rmfb(struct drm_device *dev,
3251 void *data, struct drm_file *file_priv)
3253 struct drm_framebuffer *fb = NULL;
3254 struct drm_framebuffer *fbl = NULL;
3255 uint32_t *id = data;
3258 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3261 mutex_lock(&file_priv->fbs_lock);
3262 mutex_lock(&dev->mode_config.fb_lock);
3263 fb = __drm_framebuffer_lookup(dev, *id);
3267 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3273 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3274 __drm_framebuffer_unregister(dev, fb);
3276 list_del_init(&fb->filp_head);
3277 mutex_unlock(&dev->mode_config.fb_lock);
3278 mutex_unlock(&file_priv->fbs_lock);
3280 drm_framebuffer_remove(fb);
3285 mutex_unlock(&dev->mode_config.fb_lock);
3286 mutex_unlock(&file_priv->fbs_lock);
3292 * drm_mode_getfb - get FB info
3293 * @dev: drm device for the ioctl
3294 * @data: data pointer for the ioctl
3295 * @file_priv: drm file for the ioctl call
3297 * Lookup the FB given its ID and return info about it.
3299 * Called by the user via ioctl.
3302 * Zero on success, negative errno on failure.
3304 int drm_mode_getfb(struct drm_device *dev,
3305 void *data, struct drm_file *file_priv)
3307 struct drm_mode_fb_cmd *r = data;
3308 struct drm_framebuffer *fb;
3311 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3314 fb = drm_framebuffer_lookup(dev, r->fb_id);
3318 r->height = fb->height;
3319 r->width = fb->width;
3320 r->depth = fb->depth;
3321 r->bpp = fb->bits_per_pixel;
3322 r->pitch = fb->pitches[0];
3323 if (fb->funcs->create_handle) {
3324 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3325 drm_is_control_client(file_priv)) {
3326 ret = fb->funcs->create_handle(fb, file_priv,
3329 /* GET_FB() is an unprivileged ioctl so we must not
3330 * return a buffer-handle to non-master processes! For
3331 * backwards-compatibility reasons, we cannot make
3332 * GET_FB() privileged, so just return an invalid handle
3333 * for non-masters. */
3341 drm_framebuffer_unreference(fb);
3347 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3348 * @dev: drm device for the ioctl
3349 * @data: data pointer for the ioctl
3350 * @file_priv: drm file for the ioctl call
3352 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3353 * rectangle list. Generic userspace which does frontbuffer rendering must call
3354 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3355 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3357 * Modesetting drivers which always update the frontbuffer do not need to
3358 * implement the corresponding ->dirty framebuffer callback.
3360 * Called by the user via ioctl.
3363 * Zero on success, negative errno on failure.
3365 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3366 void *data, struct drm_file *file_priv)
3368 struct drm_clip_rect __user *clips_ptr;
3369 struct drm_clip_rect *clips = NULL;
3370 struct drm_mode_fb_dirty_cmd *r = data;
3371 struct drm_framebuffer *fb;
3376 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3379 fb = drm_framebuffer_lookup(dev, r->fb_id);
3383 num_clips = r->num_clips;
3384 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3386 if (!num_clips != !clips_ptr) {
3391 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3393 /* If userspace annotates copy, clips must come in pairs */
3394 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3399 if (num_clips && clips_ptr) {
3400 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3404 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3410 ret = copy_from_user(clips, clips_ptr,
3411 num_clips * sizeof(*clips));
3418 if (fb->funcs->dirty) {
3419 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3428 drm_framebuffer_unreference(fb);
3435 * drm_fb_release - remove and free the FBs on this file
3436 * @priv: drm file for the ioctl
3438 * Destroy all the FBs associated with @filp.
3440 * Called by the user via ioctl.
3443 * Zero on success, negative errno on failure.
3445 void drm_fb_release(struct drm_file *priv)
3447 struct drm_device *dev = priv->minor->dev;
3448 struct drm_framebuffer *fb, *tfb;
3451 * When the file gets released that means no one else can access the fb
3452 * list any more, so no need to grab fpriv->fbs_lock. And we need to to
3453 * avoid upsetting lockdep since the universal cursor code adds a
3454 * framebuffer while holding mutex locks.
3456 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3457 * locks is impossible here since no one else but this function can get
3460 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3462 mutex_lock(&dev->mode_config.fb_lock);
3463 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3464 __drm_framebuffer_unregister(dev, fb);
3465 mutex_unlock(&dev->mode_config.fb_lock);
3467 list_del_init(&fb->filp_head);
3469 /* This will also drop the fpriv->fbs reference. */
3470 drm_framebuffer_remove(fb);
3475 * drm_property_create - create a new property type
3477 * @flags: flags specifying the property type
3478 * @name: name of the property
3479 * @num_values: number of pre-defined values
3481 * This creates a new generic drm property which can then be attached to a drm
3482 * object with drm_object_attach_property. The returned property object must be
3483 * freed with drm_property_destroy.
3485 * Note that the DRM core keeps a per-device list of properties and that, if
3486 * drm_mode_config_cleanup() is called, it will destroy all properties created
3490 * A pointer to the newly created property on success, NULL on failure.
3492 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3493 const char *name, int num_values)
3495 struct drm_property *property = NULL;
3498 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3502 property->dev = dev;
3505 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3506 if (!property->values)
3510 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3514 property->flags = flags;
3515 property->num_values = num_values;
3516 INIT_LIST_HEAD(&property->enum_list);
3519 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3520 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3523 list_add_tail(&property->head, &dev->mode_config.property_list);
3525 WARN_ON(!drm_property_type_valid(property));
3529 kfree(property->values);
3533 EXPORT_SYMBOL(drm_property_create);
3536 * drm_property_create_enum - create a new enumeration property type
3538 * @flags: flags specifying the property type
3539 * @name: name of the property
3540 * @props: enumeration lists with property values
3541 * @num_values: number of pre-defined values
3543 * This creates a new generic drm property which can then be attached to a drm
3544 * object with drm_object_attach_property. The returned property object must be
3545 * freed with drm_property_destroy.
3547 * Userspace is only allowed to set one of the predefined values for enumeration
3551 * A pointer to the newly created property on success, NULL on failure.
3553 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3555 const struct drm_prop_enum_list *props,
3558 struct drm_property *property;
3561 flags |= DRM_MODE_PROP_ENUM;
3563 property = drm_property_create(dev, flags, name, num_values);
3567 for (i = 0; i < num_values; i++) {
3568 ret = drm_property_add_enum(property, i,
3572 drm_property_destroy(dev, property);
3579 EXPORT_SYMBOL(drm_property_create_enum);
3582 * drm_property_create_bitmask - create a new bitmask property type
3584 * @flags: flags specifying the property type
3585 * @name: name of the property
3586 * @props: enumeration lists with property bitflags
3587 * @num_props: size of the @props array
3588 * @supported_bits: bitmask of all supported enumeration values
3590 * This creates a new bitmask 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 * Compared to plain enumeration properties userspace is allowed to set any
3595 * or'ed together combination of the predefined property bitflag values
3598 * A pointer to the newly created property on success, NULL on failure.
3600 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3601 int flags, const char *name,
3602 const struct drm_prop_enum_list *props,
3604 uint64_t supported_bits)
3606 struct drm_property *property;
3607 int i, ret, index = 0;
3608 int num_values = hweight64(supported_bits);
3610 flags |= DRM_MODE_PROP_BITMASK;
3612 property = drm_property_create(dev, flags, name, num_values);
3615 for (i = 0; i < num_props; i++) {
3616 if (!(supported_bits & (1ULL << props[i].type)))
3619 if (WARN_ON(index >= num_values)) {
3620 drm_property_destroy(dev, property);
3624 ret = drm_property_add_enum(property, index++,
3628 drm_property_destroy(dev, property);
3635 EXPORT_SYMBOL(drm_property_create_bitmask);
3637 static struct drm_property *property_create_range(struct drm_device *dev,
3638 int flags, const char *name,
3639 uint64_t min, uint64_t max)
3641 struct drm_property *property;
3643 property = drm_property_create(dev, flags, name, 2);
3647 property->values[0] = min;
3648 property->values[1] = max;
3654 * drm_property_create_range - create a new ranged property type
3656 * @flags: flags specifying the property type
3657 * @name: name of the property
3658 * @min: minimum value of the property
3659 * @max: maximum value of the property
3661 * This creates a new generic drm property which can then be attached to a drm
3662 * object with drm_object_attach_property. The returned property object must be
3663 * freed with drm_property_destroy.
3665 * Userspace is allowed to set any integer value in the (min, max) range
3669 * A pointer to the newly created property on success, NULL on failure.
3671 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3673 uint64_t min, uint64_t max)
3675 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3678 EXPORT_SYMBOL(drm_property_create_range);
3680 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3681 int flags, const char *name,
3682 int64_t min, int64_t max)
3684 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3685 name, I642U64(min), I642U64(max));
3687 EXPORT_SYMBOL(drm_property_create_signed_range);
3689 struct drm_property *drm_property_create_object(struct drm_device *dev,
3690 int flags, const char *name, uint32_t type)
3692 struct drm_property *property;
3694 flags |= DRM_MODE_PROP_OBJECT;
3696 property = drm_property_create(dev, flags, name, 1);
3700 property->values[0] = type;
3704 EXPORT_SYMBOL(drm_property_create_object);
3707 * drm_property_add_enum - add a possible value to an enumeration property
3708 * @property: enumeration property to change
3709 * @index: index of the new enumeration
3710 * @value: value of the new enumeration
3711 * @name: symbolic name of the new enumeration
3713 * This functions adds enumerations to a property.
3715 * It's use is deprecated, drivers should use one of the more specific helpers
3716 * to directly create the property with all enumerations already attached.
3719 * Zero on success, error code on failure.
3721 int drm_property_add_enum(struct drm_property *property, int index,
3722 uint64_t value, const char *name)
3724 struct drm_property_enum *prop_enum;
3726 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3727 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3731 * Bitmask enum properties have the additional constraint of values
3734 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3738 if (!list_empty(&property->enum_list)) {
3739 list_for_each_entry(prop_enum, &property->enum_list, head) {
3740 if (prop_enum->value == value) {
3741 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3742 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3748 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3752 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3753 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3754 prop_enum->value = value;
3756 property->values[index] = value;
3757 list_add_tail(&prop_enum->head, &property->enum_list);
3760 EXPORT_SYMBOL(drm_property_add_enum);
3763 * drm_property_destroy - destroy a drm property
3765 * @property: property to destry
3767 * This function frees a property including any attached resources like
3768 * enumeration values.
3770 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3772 struct drm_property_enum *prop_enum, *pt;
3774 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3775 list_del(&prop_enum->head);
3779 if (property->num_values)
3780 kfree(property->values);
3781 drm_mode_object_put(dev, &property->base);
3782 list_del(&property->head);
3785 EXPORT_SYMBOL(drm_property_destroy);
3788 * drm_object_attach_property - attach a property to a modeset object
3789 * @obj: drm modeset object
3790 * @property: property to attach
3791 * @init_val: initial value of the property
3793 * This attaches the given property to the modeset object with the given initial
3794 * value. Currently this function cannot fail since the properties are stored in
3795 * a statically sized array.
3797 void drm_object_attach_property(struct drm_mode_object *obj,
3798 struct drm_property *property,
3801 int count = obj->properties->count;
3803 if (count == DRM_OBJECT_MAX_PROPERTY) {
3804 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3805 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3806 "you see this message on the same object type.\n",
3811 obj->properties->ids[count] = property->base.id;
3812 obj->properties->values[count] = init_val;
3813 obj->properties->count++;
3815 EXPORT_SYMBOL(drm_object_attach_property);
3818 * drm_object_property_set_value - set the value of a property
3819 * @obj: drm mode object to set property value for
3820 * @property: property to set
3821 * @val: value the property should be set to
3823 * This functions sets a given property on a given object. This function only
3824 * changes the software state of the property, it does not call into the
3825 * driver's ->set_property callback.
3828 * Zero on success, error code on failure.
3830 int drm_object_property_set_value(struct drm_mode_object *obj,
3831 struct drm_property *property, uint64_t val)
3835 for (i = 0; i < obj->properties->count; i++) {
3836 if (obj->properties->ids[i] == property->base.id) {
3837 obj->properties->values[i] = val;
3844 EXPORT_SYMBOL(drm_object_property_set_value);
3847 * drm_object_property_get_value - retrieve the value of a property
3848 * @obj: drm mode object to get property value from
3849 * @property: property to retrieve
3850 * @val: storage for the property value
3852 * This function retrieves the softare state of the given property for the given
3853 * property. Since there is no driver callback to retrieve the current property
3854 * value this might be out of sync with the hardware, depending upon the driver
3858 * Zero on success, error code on failure.
3860 int drm_object_property_get_value(struct drm_mode_object *obj,
3861 struct drm_property *property, uint64_t *val)
3865 for (i = 0; i < obj->properties->count; i++) {
3866 if (obj->properties->ids[i] == property->base.id) {
3867 *val = obj->properties->values[i];
3874 EXPORT_SYMBOL(drm_object_property_get_value);
3877 * drm_mode_getproperty_ioctl - get the property metadata
3880 * @file_priv: DRM file info
3882 * This function retrieves the metadata for a given property, like the different
3883 * possible values for an enum property or the limits for a range property.
3885 * Blob properties are special
3887 * Called by the user via ioctl.
3890 * Zero on success, negative errno on failure.
3892 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3893 void *data, struct drm_file *file_priv)
3895 struct drm_mode_get_property *out_resp = data;
3896 struct drm_property *property;
3898 int value_count = 0;
3901 struct drm_property_enum *prop_enum;
3902 struct drm_mode_property_enum __user *enum_ptr;
3903 uint64_t __user *values_ptr;
3905 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3908 drm_modeset_lock_all(dev);
3909 property = drm_property_find(dev, out_resp->prop_id);
3915 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3916 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3917 list_for_each_entry(prop_enum, &property->enum_list, head)
3921 value_count = property->num_values;
3923 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3924 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3925 out_resp->flags = property->flags;
3927 if ((out_resp->count_values >= value_count) && value_count) {
3928 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3929 for (i = 0; i < value_count; i++) {
3930 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3936 out_resp->count_values = value_count;
3938 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3939 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3940 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3942 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3943 list_for_each_entry(prop_enum, &property->enum_list, head) {
3945 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3950 if (copy_to_user(&enum_ptr[copied].name,
3951 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3958 out_resp->count_enum_blobs = enum_count;
3962 * NOTE: The idea seems to have been to use this to read all the blob
3963 * property values. But nothing ever added them to the corresponding
3964 * list, userspace always used the special-purpose get_blob ioctl to
3965 * read the value for a blob property. It also doesn't make a lot of
3966 * sense to return values here when everything else is just metadata for
3967 * the property itself.
3969 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
3970 out_resp->count_enum_blobs = 0;
3972 drm_modeset_unlock_all(dev);
3976 static struct drm_property_blob *
3977 drm_property_create_blob(struct drm_device *dev, size_t length,
3980 struct drm_property_blob *blob;
3983 if (!length || !data)
3986 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3990 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3996 blob->length = length;
3998 memcpy(blob->data, data, length);
4000 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
4004 static void drm_property_destroy_blob(struct drm_device *dev,
4005 struct drm_property_blob *blob)
4007 drm_mode_object_put(dev, &blob->base);
4008 list_del(&blob->head);
4013 * drm_mode_getblob_ioctl - get the contents of a blob property value
4016 * @file_priv: DRM file info
4018 * This function retrieves the contents of a blob property. The value stored in
4019 * an object's blob property is just a normal modeset object id.
4021 * Called by the user via ioctl.
4024 * Zero on success, negative errno on failure.
4026 int drm_mode_getblob_ioctl(struct drm_device *dev,
4027 void *data, struct drm_file *file_priv)
4029 struct drm_mode_get_blob *out_resp = data;
4030 struct drm_property_blob *blob;
4032 void __user *blob_ptr;
4034 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4037 drm_modeset_lock_all(dev);
4038 blob = drm_property_blob_find(dev, out_resp->blob_id);
4044 if (out_resp->length == blob->length) {
4045 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4046 if (copy_to_user(blob_ptr, blob->data, blob->length)){
4051 out_resp->length = blob->length;
4054 drm_modeset_unlock_all(dev);
4059 * drm_mode_connector_set_path_property - set tile property on connector
4060 * @connector: connector to set property on.
4061 * @path: path to use for property.
4063 * This creates a property to expose to userspace to specify a
4064 * connector path. This is mainly used for DisplayPort MST where
4065 * connectors have a topology and we want to allow userspace to give
4066 * them more meaningful names.
4069 * Zero on success, negative errno on failure.
4071 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4074 struct drm_device *dev = connector->dev;
4075 size_t size = strlen(path) + 1;
4078 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4080 if (!connector->path_blob_ptr)
4083 ret = drm_object_property_set_value(&connector->base,
4084 dev->mode_config.path_property,
4085 connector->path_blob_ptr->base.id);
4088 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4091 * drm_mode_connector_update_edid_property - update the edid property of a connector
4092 * @connector: drm connector
4093 * @edid: new value of the edid property
4095 * This function creates a new blob modeset object and assigns its id to the
4096 * connector's edid property.
4099 * Zero on success, negative errno on failure.
4101 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4102 const struct edid *edid)
4104 struct drm_device *dev = connector->dev;
4108 /* ignore requests to set edid when overridden */
4109 if (connector->override_edid)
4112 if (connector->edid_blob_ptr)
4113 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4115 /* Delete edid, when there is none. */
4117 connector->edid_blob_ptr = NULL;
4118 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4122 size = EDID_LENGTH * (1 + edid->extensions);
4123 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4125 if (!connector->edid_blob_ptr)
4128 ret = drm_object_property_set_value(&connector->base,
4129 dev->mode_config.edid_property,
4130 connector->edid_blob_ptr->base.id);
4134 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4136 static bool drm_property_change_is_valid(struct drm_property *property,
4139 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4142 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4143 if (value < property->values[0] || value > property->values[1])
4146 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4147 int64_t svalue = U642I64(value);
4148 if (svalue < U642I64(property->values[0]) ||
4149 svalue > U642I64(property->values[1]))
4152 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4154 uint64_t valid_mask = 0;
4155 for (i = 0; i < property->num_values; i++)
4156 valid_mask |= (1ULL << property->values[i]);
4157 return !(value & ~valid_mask);
4158 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4159 /* Only the driver knows */
4161 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4162 struct drm_mode_object *obj;
4163 /* a zero value for an object property translates to null: */
4167 * NOTE: use _object_find() directly to bypass restriction on
4168 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4169 * object this could race against object finalization, so it
4170 * simply tells us that the object *was* valid. Which is good
4173 obj = _object_find(property->dev, value, property->values[0]);
4177 for (i = 0; i < property->num_values; i++)
4178 if (property->values[i] == value)
4185 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4188 * @file_priv: DRM file info
4190 * This function sets the current value for a connectors's property. It also
4191 * calls into a driver's ->set_property callback to update the hardware state
4193 * Called by the user via ioctl.
4196 * Zero on success, negative errno on failure.
4198 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4199 void *data, struct drm_file *file_priv)
4201 struct drm_mode_connector_set_property *conn_set_prop = data;
4202 struct drm_mode_obj_set_property obj_set_prop = {
4203 .value = conn_set_prop->value,
4204 .prop_id = conn_set_prop->prop_id,
4205 .obj_id = conn_set_prop->connector_id,
4206 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4209 /* It does all the locking and checking we need */
4210 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4213 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4214 struct drm_property *property,
4218 struct drm_connector *connector = obj_to_connector(obj);
4220 /* Do DPMS ourselves */
4221 if (property == connector->dev->mode_config.dpms_property) {
4222 if (connector->funcs->dpms)
4223 (*connector->funcs->dpms)(connector, (int)value);
4225 } else if (connector->funcs->set_property)
4226 ret = connector->funcs->set_property(connector, property, value);
4228 /* store the property value if successful */
4230 drm_object_property_set_value(&connector->base, property, value);
4234 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4235 struct drm_property *property,
4239 struct drm_crtc *crtc = obj_to_crtc(obj);
4241 if (crtc->funcs->set_property)
4242 ret = crtc->funcs->set_property(crtc, property, value);
4244 drm_object_property_set_value(obj, property, value);
4250 * drm_mode_plane_set_obj_prop - set the value of a property
4251 * @plane: drm plane object to set property value for
4252 * @property: property to set
4253 * @value: value the property should be set to
4255 * This functions sets a given property on a given plane object. This function
4256 * calls the driver's ->set_property callback and changes the software state of
4257 * the property if the callback succeeds.
4260 * Zero on success, error code on failure.
4262 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4263 struct drm_property *property,
4267 struct drm_mode_object *obj = &plane->base;
4269 if (plane->funcs->set_property)
4270 ret = plane->funcs->set_property(plane, property, value);
4272 drm_object_property_set_value(obj, property, value);
4276 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4279 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4282 * @file_priv: DRM file info
4284 * This function retrieves the current value for an object's property. Compared
4285 * to the connector specific ioctl this one is extended to also work on crtc and
4288 * Called by the user via ioctl.
4291 * Zero on success, negative errno on failure.
4293 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4294 struct drm_file *file_priv)
4296 struct drm_mode_obj_get_properties *arg = data;
4297 struct drm_mode_object *obj;
4301 int props_count = 0;
4302 uint32_t __user *props_ptr;
4303 uint64_t __user *prop_values_ptr;
4305 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4308 drm_modeset_lock_all(dev);
4310 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4315 if (!obj->properties) {
4320 props_count = obj->properties->count;
4322 /* This ioctl is called twice, once to determine how much space is
4323 * needed, and the 2nd time to fill it. */
4324 if ((arg->count_props >= props_count) && props_count) {
4326 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
4327 prop_values_ptr = (uint64_t __user *)(unsigned long)
4328 (arg->prop_values_ptr);
4329 for (i = 0; i < props_count; i++) {
4330 if (put_user(obj->properties->ids[i],
4331 props_ptr + copied)) {
4335 if (put_user(obj->properties->values[i],
4336 prop_values_ptr + copied)) {
4343 arg->count_props = props_count;
4345 drm_modeset_unlock_all(dev);
4350 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4353 * @file_priv: DRM file info
4355 * This function sets the current value for an object's property. It also calls
4356 * into a driver's ->set_property callback to update the hardware state.
4357 * Compared to the connector specific ioctl this one is extended to also work on
4358 * crtc and plane objects.
4360 * Called by the user via ioctl.
4363 * Zero on success, negative errno on failure.
4365 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4366 struct drm_file *file_priv)
4368 struct drm_mode_obj_set_property *arg = data;
4369 struct drm_mode_object *arg_obj;
4370 struct drm_mode_object *prop_obj;
4371 struct drm_property *property;
4375 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4378 drm_modeset_lock_all(dev);
4380 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4385 if (!arg_obj->properties)
4388 for (i = 0; i < arg_obj->properties->count; i++)
4389 if (arg_obj->properties->ids[i] == arg->prop_id)
4392 if (i == arg_obj->properties->count)
4395 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4396 DRM_MODE_OBJECT_PROPERTY);
4401 property = obj_to_property(prop_obj);
4403 if (!drm_property_change_is_valid(property, arg->value))
4406 switch (arg_obj->type) {
4407 case DRM_MODE_OBJECT_CONNECTOR:
4408 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4411 case DRM_MODE_OBJECT_CRTC:
4412 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4414 case DRM_MODE_OBJECT_PLANE:
4415 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4416 property, arg->value);
4421 drm_modeset_unlock_all(dev);
4426 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4427 * @connector: connector to attach
4428 * @encoder: encoder to attach @connector to
4430 * This function links up a connector to an encoder. Note that the routing
4431 * restrictions between encoders and crtcs are exposed to userspace through the
4432 * possible_clones and possible_crtcs bitmasks.
4435 * Zero on success, negative errno on failure.
4437 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4438 struct drm_encoder *encoder)
4442 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4443 if (connector->encoder_ids[i] == 0) {
4444 connector->encoder_ids[i] = encoder->base.id;
4450 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4453 * drm_mode_crtc_set_gamma_size - set the gamma table size
4454 * @crtc: CRTC to set the gamma table size for
4455 * @gamma_size: size of the gamma table
4457 * Drivers which support gamma tables should set this to the supported gamma
4458 * table size when initializing the CRTC. Currently the drm core only supports a
4459 * fixed gamma table size.
4462 * Zero on success, negative errno on failure.
4464 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4467 crtc->gamma_size = gamma_size;
4469 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4470 if (!crtc->gamma_store) {
4471 crtc->gamma_size = 0;
4477 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4480 * drm_mode_gamma_set_ioctl - set the gamma table
4483 * @file_priv: DRM file info
4485 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4486 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4488 * Called by the user via ioctl.
4491 * Zero on success, negative errno on failure.
4493 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4494 void *data, struct drm_file *file_priv)
4496 struct drm_mode_crtc_lut *crtc_lut = data;
4497 struct drm_crtc *crtc;
4498 void *r_base, *g_base, *b_base;
4502 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4505 drm_modeset_lock_all(dev);
4506 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4512 if (crtc->funcs->gamma_set == NULL) {
4517 /* memcpy into gamma store */
4518 if (crtc_lut->gamma_size != crtc->gamma_size) {
4523 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4524 r_base = crtc->gamma_store;
4525 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4530 g_base = r_base + size;
4531 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4536 b_base = g_base + size;
4537 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4542 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4545 drm_modeset_unlock_all(dev);
4551 * drm_mode_gamma_get_ioctl - get the gamma table
4554 * @file_priv: DRM file info
4556 * Copy the current gamma table into the storage provided. This also provides
4557 * the gamma table size the driver expects, which can be used to size the
4558 * allocated storage.
4560 * Called by the user via ioctl.
4563 * Zero on success, negative errno on failure.
4565 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4566 void *data, struct drm_file *file_priv)
4568 struct drm_mode_crtc_lut *crtc_lut = data;
4569 struct drm_crtc *crtc;
4570 void *r_base, *g_base, *b_base;
4574 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4577 drm_modeset_lock_all(dev);
4578 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4584 /* memcpy into gamma store */
4585 if (crtc_lut->gamma_size != crtc->gamma_size) {
4590 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4591 r_base = crtc->gamma_store;
4592 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4597 g_base = r_base + size;
4598 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4603 b_base = g_base + size;
4604 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4609 drm_modeset_unlock_all(dev);
4614 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4617 * @file_priv: DRM file info
4619 * This schedules an asynchronous update on a given CRTC, called page flip.
4620 * Optionally a drm event is generated to signal the completion of the event.
4621 * Generic drivers cannot assume that a pageflip with changed framebuffer
4622 * properties (including driver specific metadata like tiling layout) will work,
4623 * but some drivers support e.g. pixel format changes through the pageflip
4626 * Called by the user via ioctl.
4629 * Zero on success, negative errno on failure.
4631 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4632 void *data, struct drm_file *file_priv)
4634 struct drm_mode_crtc_page_flip *page_flip = data;
4635 struct drm_crtc *crtc;
4636 struct drm_framebuffer *fb = NULL;
4637 struct drm_pending_vblank_event *e = NULL;
4638 unsigned long flags;
4641 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4642 page_flip->reserved != 0)
4645 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4648 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4652 drm_modeset_lock_crtc(crtc, crtc->primary);
4653 if (crtc->primary->fb == NULL) {
4654 /* The framebuffer is currently unbound, presumably
4655 * due to a hotplug event, that userspace has not
4662 if (crtc->funcs->page_flip == NULL)
4665 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4671 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4675 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4676 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4681 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4683 spin_lock_irqsave(&dev->event_lock, flags);
4684 if (file_priv->event_space < sizeof e->event) {
4685 spin_unlock_irqrestore(&dev->event_lock, flags);
4688 file_priv->event_space -= sizeof e->event;
4689 spin_unlock_irqrestore(&dev->event_lock, flags);
4691 e = kzalloc(sizeof *e, GFP_KERNEL);
4693 spin_lock_irqsave(&dev->event_lock, flags);
4694 file_priv->event_space += sizeof e->event;
4695 spin_unlock_irqrestore(&dev->event_lock, flags);
4699 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4700 e->event.base.length = sizeof e->event;
4701 e->event.user_data = page_flip->user_data;
4702 e->base.event = &e->event.base;
4703 e->base.file_priv = file_priv;
4705 (void (*) (struct drm_pending_event *)) kfree;
4708 crtc->primary->old_fb = crtc->primary->fb;
4709 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4711 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4712 spin_lock_irqsave(&dev->event_lock, flags);
4713 file_priv->event_space += sizeof e->event;
4714 spin_unlock_irqrestore(&dev->event_lock, flags);
4717 /* Keep the old fb, don't unref it. */
4718 crtc->primary->old_fb = NULL;
4721 * Warn if the driver hasn't properly updated the crtc->fb
4722 * field to reflect that the new framebuffer is now used.
4723 * Failing to do so will screw with the reference counting
4726 WARN_ON(crtc->primary->fb != fb);
4727 /* Unref only the old framebuffer. */
4733 drm_framebuffer_unreference(fb);
4734 if (crtc->primary->old_fb)
4735 drm_framebuffer_unreference(crtc->primary->old_fb);
4736 crtc->primary->old_fb = NULL;
4737 drm_modeset_unlock_crtc(crtc);
4743 * drm_mode_config_reset - call ->reset callbacks
4746 * This functions calls all the crtc's, encoder's and connector's ->reset
4747 * callback. Drivers can use this in e.g. their driver load or resume code to
4748 * reset hardware and software state.
4750 void drm_mode_config_reset(struct drm_device *dev)
4752 struct drm_crtc *crtc;
4753 struct drm_plane *plane;
4754 struct drm_encoder *encoder;
4755 struct drm_connector *connector;
4757 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4758 if (plane->funcs->reset)
4759 plane->funcs->reset(plane);
4761 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4762 if (crtc->funcs->reset)
4763 crtc->funcs->reset(crtc);
4765 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4766 if (encoder->funcs->reset)
4767 encoder->funcs->reset(encoder);
4769 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4770 connector->status = connector_status_unknown;
4772 if (connector->funcs->reset)
4773 connector->funcs->reset(connector);
4776 EXPORT_SYMBOL(drm_mode_config_reset);
4779 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4782 * @file_priv: DRM file info
4784 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4785 * TTM or something else entirely) and returns the resulting buffer handle. This
4786 * handle can then be wrapped up into a framebuffer modeset object.
4788 * Note that userspace is not allowed to use such objects for render
4789 * acceleration - drivers must create their own private ioctls for such a use
4792 * Called by the user via ioctl.
4795 * Zero on success, negative errno on failure.
4797 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4798 void *data, struct drm_file *file_priv)
4800 struct drm_mode_create_dumb *args = data;
4801 u32 cpp, stride, size;
4803 if (!dev->driver->dumb_create)
4805 if (!args->width || !args->height || !args->bpp)
4808 /* overflow checks for 32bit size calculations */
4809 /* NOTE: DIV_ROUND_UP() can overflow */
4810 cpp = DIV_ROUND_UP(args->bpp, 8);
4811 if (!cpp || cpp > 0xffffffffU / args->width)
4813 stride = cpp * args->width;
4814 if (args->height > 0xffffffffU / stride)
4817 /* test for wrap-around */
4818 size = args->height * stride;
4819 if (PAGE_ALIGN(size) == 0)
4823 * handle, pitch and size are output parameters. Zero them out to
4824 * prevent drivers from accidentally using uninitialized data. Since
4825 * not all existing userspace is clearing these fields properly we
4826 * cannot reject IOCTL with garbage in them.
4832 return dev->driver->dumb_create(file_priv, dev, args);
4836 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4839 * @file_priv: DRM file info
4841 * Allocate an offset in the drm device node's address space to be able to
4842 * memory map a dumb buffer.
4844 * Called by the user via ioctl.
4847 * Zero on success, negative errno on failure.
4849 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4850 void *data, struct drm_file *file_priv)
4852 struct drm_mode_map_dumb *args = data;
4854 /* call driver ioctl to get mmap offset */
4855 if (!dev->driver->dumb_map_offset)
4858 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4862 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4865 * @file_priv: DRM file info
4867 * This destroys the userspace handle for the given dumb backing storage buffer.
4868 * Since buffer objects must be reference counted in the kernel a buffer object
4869 * won't be immediately freed if a framebuffer modeset object still uses it.
4871 * Called by the user via ioctl.
4874 * Zero on success, negative errno on failure.
4876 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4877 void *data, struct drm_file *file_priv)
4879 struct drm_mode_destroy_dumb *args = data;
4881 if (!dev->driver->dumb_destroy)
4884 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4888 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4889 * @format: pixel format (DRM_FORMAT_*)
4890 * @depth: storage for the depth value
4891 * @bpp: storage for the bpp value
4893 * This only supports RGB formats here for compat with code that doesn't use
4894 * pixel formats directly yet.
4896 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4901 case DRM_FORMAT_RGB332:
4902 case DRM_FORMAT_BGR233:
4906 case DRM_FORMAT_XRGB1555:
4907 case DRM_FORMAT_XBGR1555:
4908 case DRM_FORMAT_RGBX5551:
4909 case DRM_FORMAT_BGRX5551:
4910 case DRM_FORMAT_ARGB1555:
4911 case DRM_FORMAT_ABGR1555:
4912 case DRM_FORMAT_RGBA5551:
4913 case DRM_FORMAT_BGRA5551:
4917 case DRM_FORMAT_RGB565:
4918 case DRM_FORMAT_BGR565:
4922 case DRM_FORMAT_RGB888:
4923 case DRM_FORMAT_BGR888:
4927 case DRM_FORMAT_XRGB8888:
4928 case DRM_FORMAT_XBGR8888:
4929 case DRM_FORMAT_RGBX8888:
4930 case DRM_FORMAT_BGRX8888:
4934 case DRM_FORMAT_XRGB2101010:
4935 case DRM_FORMAT_XBGR2101010:
4936 case DRM_FORMAT_RGBX1010102:
4937 case DRM_FORMAT_BGRX1010102:
4938 case DRM_FORMAT_ARGB2101010:
4939 case DRM_FORMAT_ABGR2101010:
4940 case DRM_FORMAT_RGBA1010102:
4941 case DRM_FORMAT_BGRA1010102:
4945 case DRM_FORMAT_ARGB8888:
4946 case DRM_FORMAT_ABGR8888:
4947 case DRM_FORMAT_RGBA8888:
4948 case DRM_FORMAT_BGRA8888:
4953 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4954 drm_get_format_name(format));
4960 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4963 * drm_format_num_planes - get the number of planes for format
4964 * @format: pixel format (DRM_FORMAT_*)
4967 * The number of planes used by the specified pixel format.
4969 int drm_format_num_planes(uint32_t format)
4972 case DRM_FORMAT_YUV410:
4973 case DRM_FORMAT_YVU410:
4974 case DRM_FORMAT_YUV411:
4975 case DRM_FORMAT_YVU411:
4976 case DRM_FORMAT_YUV420:
4977 case DRM_FORMAT_YVU420:
4978 case DRM_FORMAT_YUV422:
4979 case DRM_FORMAT_YVU422:
4980 case DRM_FORMAT_YUV444:
4981 case DRM_FORMAT_YVU444:
4983 case DRM_FORMAT_NV12:
4984 case DRM_FORMAT_NV21:
4985 case DRM_FORMAT_NV16:
4986 case DRM_FORMAT_NV61:
4987 case DRM_FORMAT_NV24:
4988 case DRM_FORMAT_NV42:
4994 EXPORT_SYMBOL(drm_format_num_planes);
4997 * drm_format_plane_cpp - determine the bytes per pixel value
4998 * @format: pixel format (DRM_FORMAT_*)
4999 * @plane: plane index
5002 * The bytes per pixel value for the specified plane.
5004 int drm_format_plane_cpp(uint32_t format, int plane)
5009 if (plane >= drm_format_num_planes(format))
5013 case DRM_FORMAT_YUYV:
5014 case DRM_FORMAT_YVYU:
5015 case DRM_FORMAT_UYVY:
5016 case DRM_FORMAT_VYUY:
5018 case DRM_FORMAT_NV12:
5019 case DRM_FORMAT_NV21:
5020 case DRM_FORMAT_NV16:
5021 case DRM_FORMAT_NV61:
5022 case DRM_FORMAT_NV24:
5023 case DRM_FORMAT_NV42:
5024 return plane ? 2 : 1;
5025 case DRM_FORMAT_YUV410:
5026 case DRM_FORMAT_YVU410:
5027 case DRM_FORMAT_YUV411:
5028 case DRM_FORMAT_YVU411:
5029 case DRM_FORMAT_YUV420:
5030 case DRM_FORMAT_YVU420:
5031 case DRM_FORMAT_YUV422:
5032 case DRM_FORMAT_YVU422:
5033 case DRM_FORMAT_YUV444:
5034 case DRM_FORMAT_YVU444:
5037 drm_fb_get_bpp_depth(format, &depth, &bpp);
5041 EXPORT_SYMBOL(drm_format_plane_cpp);
5044 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5045 * @format: pixel format (DRM_FORMAT_*)
5048 * The horizontal chroma subsampling factor for the
5049 * specified pixel format.
5051 int drm_format_horz_chroma_subsampling(uint32_t format)
5054 case DRM_FORMAT_YUV411:
5055 case DRM_FORMAT_YVU411:
5056 case DRM_FORMAT_YUV410:
5057 case DRM_FORMAT_YVU410:
5059 case DRM_FORMAT_YUYV:
5060 case DRM_FORMAT_YVYU:
5061 case DRM_FORMAT_UYVY:
5062 case DRM_FORMAT_VYUY:
5063 case DRM_FORMAT_NV12:
5064 case DRM_FORMAT_NV21:
5065 case DRM_FORMAT_NV16:
5066 case DRM_FORMAT_NV61:
5067 case DRM_FORMAT_YUV422:
5068 case DRM_FORMAT_YVU422:
5069 case DRM_FORMAT_YUV420:
5070 case DRM_FORMAT_YVU420:
5076 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5079 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5080 * @format: pixel format (DRM_FORMAT_*)
5083 * The vertical chroma subsampling factor for the
5084 * specified pixel format.
5086 int drm_format_vert_chroma_subsampling(uint32_t format)
5089 case DRM_FORMAT_YUV410:
5090 case DRM_FORMAT_YVU410:
5092 case DRM_FORMAT_YUV420:
5093 case DRM_FORMAT_YVU420:
5094 case DRM_FORMAT_NV12:
5095 case DRM_FORMAT_NV21:
5101 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5104 * drm_rotation_simplify() - Try to simplify the rotation
5105 * @rotation: Rotation to be simplified
5106 * @supported_rotations: Supported rotations
5108 * Attempt to simplify the rotation to a form that is supported.
5109 * Eg. if the hardware supports everything except DRM_REFLECT_X
5110 * one could call this function like this:
5112 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5113 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5114 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5116 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5117 * transforms the hardware supports, this function may not
5118 * be able to produce a supported transform, so the caller should
5119 * check the result afterwards.
5121 unsigned int drm_rotation_simplify(unsigned int rotation,
5122 unsigned int supported_rotations)
5124 if (rotation & ~supported_rotations) {
5125 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5126 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5131 EXPORT_SYMBOL(drm_rotation_simplify);
5134 * drm_mode_config_init - initialize DRM mode_configuration structure
5137 * Initialize @dev's mode_config structure, used for tracking the graphics
5138 * configuration of @dev.
5140 * Since this initializes the modeset locks, no locking is possible. Which is no
5141 * problem, since this should happen single threaded at init time. It is the
5142 * driver's problem to ensure this guarantee.
5145 void drm_mode_config_init(struct drm_device *dev)
5147 mutex_init(&dev->mode_config.mutex);
5148 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5149 mutex_init(&dev->mode_config.idr_mutex);
5150 mutex_init(&dev->mode_config.fb_lock);
5151 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5152 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5153 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5154 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
5155 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5156 INIT_LIST_HEAD(&dev->mode_config.property_list);
5157 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5158 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5159 idr_init(&dev->mode_config.crtc_idr);
5160 idr_init(&dev->mode_config.tile_idr);
5162 drm_modeset_lock_all(dev);
5163 drm_mode_create_standard_connector_properties(dev);
5164 drm_mode_create_standard_plane_properties(dev);
5165 drm_modeset_unlock_all(dev);
5167 /* Just to be sure */
5168 dev->mode_config.num_fb = 0;
5169 dev->mode_config.num_connector = 0;
5170 dev->mode_config.num_crtc = 0;
5171 dev->mode_config.num_encoder = 0;
5172 dev->mode_config.num_overlay_plane = 0;
5173 dev->mode_config.num_total_plane = 0;
5175 EXPORT_SYMBOL(drm_mode_config_init);
5178 * drm_mode_config_cleanup - free up DRM mode_config info
5181 * Free up all the connectors and CRTCs associated with this DRM device, then
5182 * free up the framebuffers and associated buffer objects.
5184 * Note that since this /should/ happen single-threaded at driver/device
5185 * teardown time, no locking is required. It's the driver's job to ensure that
5186 * this guarantee actually holds true.
5188 * FIXME: cleanup any dangling user buffer objects too
5190 void drm_mode_config_cleanup(struct drm_device *dev)
5192 struct drm_connector *connector, *ot;
5193 struct drm_crtc *crtc, *ct;
5194 struct drm_encoder *encoder, *enct;
5195 struct drm_bridge *bridge, *brt;
5196 struct drm_framebuffer *fb, *fbt;
5197 struct drm_property *property, *pt;
5198 struct drm_property_blob *blob, *bt;
5199 struct drm_plane *plane, *plt;
5201 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5203 encoder->funcs->destroy(encoder);
5206 list_for_each_entry_safe(bridge, brt,
5207 &dev->mode_config.bridge_list, head) {
5208 bridge->funcs->destroy(bridge);
5211 list_for_each_entry_safe(connector, ot,
5212 &dev->mode_config.connector_list, head) {
5213 connector->funcs->destroy(connector);
5216 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5218 drm_property_destroy(dev, property);
5221 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5223 drm_property_destroy_blob(dev, blob);
5227 * Single-threaded teardown context, so it's not required to grab the
5228 * fb_lock to protect against concurrent fb_list access. Contrary, it
5229 * would actually deadlock with the drm_framebuffer_cleanup function.
5231 * Also, if there are any framebuffers left, that's a driver leak now,
5232 * so politely WARN about this.
5234 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5235 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5236 drm_framebuffer_remove(fb);
5239 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5241 plane->funcs->destroy(plane);
5244 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5245 crtc->funcs->destroy(crtc);
5248 idr_destroy(&dev->mode_config.tile_idr);
5249 idr_destroy(&dev->mode_config.crtc_idr);
5250 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5252 EXPORT_SYMBOL(drm_mode_config_cleanup);
5254 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5255 unsigned int supported_rotations)
5257 static const struct drm_prop_enum_list props[] = {
5258 { DRM_ROTATE_0, "rotate-0" },
5259 { DRM_ROTATE_90, "rotate-90" },
5260 { DRM_ROTATE_180, "rotate-180" },
5261 { DRM_ROTATE_270, "rotate-270" },
5262 { DRM_REFLECT_X, "reflect-x" },
5263 { DRM_REFLECT_Y, "reflect-y" },
5266 return drm_property_create_bitmask(dev, 0, "rotation",
5267 props, ARRAY_SIZE(props),
5268 supported_rotations);
5270 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5275 * Tile groups are used to represent tiled monitors with a unique
5276 * integer identifier. Tiled monitors using DisplayID v1.3 have
5277 * a unique 8-byte handle, we store this in a tile group, so we
5278 * have a common identifier for all tiles in a monitor group.
5280 static void drm_tile_group_free(struct kref *kref)
5282 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5283 struct drm_device *dev = tg->dev;
5284 mutex_lock(&dev->mode_config.idr_mutex);
5285 idr_remove(&dev->mode_config.tile_idr, tg->id);
5286 mutex_unlock(&dev->mode_config.idr_mutex);
5291 * drm_mode_put_tile_group - drop a reference to a tile group.
5293 * @tg: tile group to drop reference to.
5295 * drop reference to tile group and free if 0.
5297 void drm_mode_put_tile_group(struct drm_device *dev,
5298 struct drm_tile_group *tg)
5300 kref_put(&tg->refcount, drm_tile_group_free);
5304 * drm_mode_get_tile_group - get a reference to an existing tile group
5306 * @topology: 8-bytes unique per monitor.
5308 * Use the unique bytes to get a reference to an existing tile group.
5311 * tile group or NULL if not found.
5313 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5316 struct drm_tile_group *tg;
5318 mutex_lock(&dev->mode_config.idr_mutex);
5319 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5320 if (!memcmp(tg->group_data, topology, 8)) {
5321 if (!kref_get_unless_zero(&tg->refcount))
5323 mutex_unlock(&dev->mode_config.idr_mutex);
5327 mutex_unlock(&dev->mode_config.idr_mutex);
5332 * drm_mode_create_tile_group - create a tile group from a displayid description
5334 * @topology: 8-bytes unique per monitor.
5336 * Create a tile group for the unique monitor, and get a unique
5337 * identifier for the tile group.
5340 * new tile group or error.
5342 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5345 struct drm_tile_group *tg;
5348 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5350 return ERR_PTR(-ENOMEM);
5352 kref_init(&tg->refcount);
5353 memcpy(tg->group_data, topology, 8);
5356 mutex_lock(&dev->mode_config.idr_mutex);
5357 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5365 mutex_unlock(&dev->mode_config.idr_mutex);