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 EXPORT_SYMBOL(drm_crtc_cleanup);
728 * drm_crtc_index - find the index of a registered CRTC
729 * @crtc: CRTC to find index for
731 * Given a registered CRTC, return the index of that CRTC within a DRM
732 * device's list of CRTCs.
734 unsigned int drm_crtc_index(struct drm_crtc *crtc)
736 unsigned int index = 0;
737 struct drm_crtc *tmp;
739 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
748 EXPORT_SYMBOL(drm_crtc_index);
751 * drm_mode_remove - remove and free a mode
752 * @connector: connector list to modify
753 * @mode: mode to remove
755 * Remove @mode from @connector's mode list, then free it.
757 static void drm_mode_remove(struct drm_connector *connector,
758 struct drm_display_mode *mode)
760 list_del(&mode->head);
761 drm_mode_destroy(connector->dev, mode);
765 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
766 * @connector: connector to quwery
768 * The kernel supports per-connector configration of its consoles through
769 * use of the video= parameter. This function parses that option and
770 * extracts the user's specified mode (or enable/disable status) for a
771 * particular connector. This is typically only used during the early fbdev
774 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
776 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
779 if (fb_get_options(connector->name, &option))
782 if (!drm_mode_parse_command_line_for_connector(option,
790 switch (mode->force) {
794 case DRM_FORCE_ON_DIGITAL:
803 DRM_INFO("forcing %s connector %s\n", connector->name, s);
804 connector->force = mode->force;
807 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
809 mode->xres, mode->yres,
810 mode->refresh_specified ? mode->refresh : 60,
811 mode->rb ? " reduced blanking" : "",
812 mode->margins ? " with margins" : "",
813 mode->interlace ? " interlaced" : "");
817 * drm_connector_init - Init a preallocated connector
819 * @connector: the connector to init
820 * @funcs: callbacks for this connector
821 * @connector_type: user visible type of the connector
823 * Initialises a preallocated connector. Connectors should be
824 * subclassed as part of driver connector objects.
827 * Zero on success, error code on failure.
829 int drm_connector_init(struct drm_device *dev,
830 struct drm_connector *connector,
831 const struct drm_connector_funcs *funcs,
835 struct ida *connector_ida =
836 &drm_connector_enum_list[connector_type].ida;
838 drm_modeset_lock_all(dev);
840 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
844 connector->base.properties = &connector->properties;
845 connector->dev = dev;
846 connector->funcs = funcs;
847 connector->connector_type = connector_type;
848 connector->connector_type_id =
849 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
850 if (connector->connector_type_id < 0) {
851 ret = connector->connector_type_id;
855 kasprintf(GFP_KERNEL, "%s-%d",
856 drm_connector_enum_list[connector_type].name,
857 connector->connector_type_id);
858 if (!connector->name) {
863 INIT_LIST_HEAD(&connector->probed_modes);
864 INIT_LIST_HEAD(&connector->modes);
865 connector->edid_blob_ptr = NULL;
866 connector->status = connector_status_unknown;
868 drm_connector_get_cmdline_mode(connector);
870 /* We should add connectors at the end to avoid upsetting the connector
872 list_add_tail(&connector->head, &dev->mode_config.connector_list);
873 dev->mode_config.num_connector++;
875 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
876 drm_object_attach_property(&connector->base,
877 dev->mode_config.edid_property,
880 drm_object_attach_property(&connector->base,
881 dev->mode_config.dpms_property, 0);
883 connector->debugfs_entry = NULL;
887 drm_mode_object_put(dev, &connector->base);
890 drm_modeset_unlock_all(dev);
894 EXPORT_SYMBOL(drm_connector_init);
897 * drm_connector_cleanup - cleans up an initialised connector
898 * @connector: connector to cleanup
900 * Cleans up the connector but doesn't free the object.
902 void drm_connector_cleanup(struct drm_connector *connector)
904 struct drm_device *dev = connector->dev;
905 struct drm_display_mode *mode, *t;
907 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
908 drm_mode_remove(connector, mode);
910 list_for_each_entry_safe(mode, t, &connector->modes, head)
911 drm_mode_remove(connector, mode);
913 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
914 connector->connector_type_id);
916 drm_mode_object_put(dev, &connector->base);
917 kfree(connector->name);
918 connector->name = NULL;
919 list_del(&connector->head);
920 dev->mode_config.num_connector--;
922 EXPORT_SYMBOL(drm_connector_cleanup);
925 * drm_connector_index - find the index of a registered connector
926 * @connector: connector to find index for
928 * Given a registered connector, return the index of that connector within a DRM
929 * device's list of connectors.
931 unsigned int drm_connector_index(struct drm_connector *connector)
933 unsigned int index = 0;
934 struct drm_connector *tmp;
935 struct drm_mode_config *config = &connector->dev->mode_config;
937 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
939 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
940 if (tmp == connector)
948 EXPORT_SYMBOL(drm_connector_index);
951 * drm_connector_register - register a connector
952 * @connector: the connector to register
954 * Register userspace interfaces for a connector
957 * Zero on success, error code on failure.
959 int drm_connector_register(struct drm_connector *connector)
963 drm_mode_object_register(connector->dev, &connector->base);
965 ret = drm_sysfs_connector_add(connector);
969 ret = drm_debugfs_connector_add(connector);
971 drm_sysfs_connector_remove(connector);
977 EXPORT_SYMBOL(drm_connector_register);
980 * drm_connector_unregister - unregister a connector
981 * @connector: the connector to unregister
983 * Unregister userspace interfaces for a connector
985 void drm_connector_unregister(struct drm_connector *connector)
987 drm_sysfs_connector_remove(connector);
988 drm_debugfs_connector_remove(connector);
990 EXPORT_SYMBOL(drm_connector_unregister);
994 * drm_connector_unplug_all - unregister connector userspace interfaces
997 * This function unregisters all connector userspace interfaces in sysfs. Should
998 * be call when the device is disconnected, e.g. from an usb driver's
999 * ->disconnect callback.
1001 void drm_connector_unplug_all(struct drm_device *dev)
1003 struct drm_connector *connector;
1005 /* taking the mode config mutex ends up in a clash with sysfs */
1006 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1007 drm_connector_unregister(connector);
1010 EXPORT_SYMBOL(drm_connector_unplug_all);
1013 * drm_bridge_init - initialize a drm transcoder/bridge
1015 * @bridge: transcoder/bridge to set up
1016 * @funcs: bridge function table
1018 * Initialises a preallocated bridge. Bridges should be
1019 * subclassed as part of driver connector objects.
1022 * Zero on success, error code on failure.
1024 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1025 const struct drm_bridge_funcs *funcs)
1029 drm_modeset_lock_all(dev);
1031 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1036 bridge->funcs = funcs;
1038 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1039 dev->mode_config.num_bridge++;
1042 drm_modeset_unlock_all(dev);
1045 EXPORT_SYMBOL(drm_bridge_init);
1048 * drm_bridge_cleanup - cleans up an initialised bridge
1049 * @bridge: bridge to cleanup
1051 * Cleans up the bridge but doesn't free the object.
1053 void drm_bridge_cleanup(struct drm_bridge *bridge)
1055 struct drm_device *dev = bridge->dev;
1057 drm_modeset_lock_all(dev);
1058 drm_mode_object_put(dev, &bridge->base);
1059 list_del(&bridge->head);
1060 dev->mode_config.num_bridge--;
1061 drm_modeset_unlock_all(dev);
1063 EXPORT_SYMBOL(drm_bridge_cleanup);
1066 * drm_encoder_init - Init a preallocated encoder
1068 * @encoder: the encoder to init
1069 * @funcs: callbacks for this encoder
1070 * @encoder_type: user visible type of the encoder
1072 * Initialises a preallocated encoder. Encoder should be
1073 * subclassed as part of driver encoder objects.
1076 * Zero on success, error code on failure.
1078 int drm_encoder_init(struct drm_device *dev,
1079 struct drm_encoder *encoder,
1080 const struct drm_encoder_funcs *funcs,
1085 drm_modeset_lock_all(dev);
1087 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1092 encoder->encoder_type = encoder_type;
1093 encoder->funcs = funcs;
1094 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1095 drm_encoder_enum_list[encoder_type].name,
1097 if (!encoder->name) {
1102 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1103 dev->mode_config.num_encoder++;
1107 drm_mode_object_put(dev, &encoder->base);
1110 drm_modeset_unlock_all(dev);
1114 EXPORT_SYMBOL(drm_encoder_init);
1117 * drm_encoder_cleanup - cleans up an initialised encoder
1118 * @encoder: encoder to cleanup
1120 * Cleans up the encoder but doesn't free the object.
1122 void drm_encoder_cleanup(struct drm_encoder *encoder)
1124 struct drm_device *dev = encoder->dev;
1125 drm_modeset_lock_all(dev);
1126 drm_mode_object_put(dev, &encoder->base);
1127 kfree(encoder->name);
1128 encoder->name = NULL;
1129 list_del(&encoder->head);
1130 dev->mode_config.num_encoder--;
1131 drm_modeset_unlock_all(dev);
1133 EXPORT_SYMBOL(drm_encoder_cleanup);
1136 * drm_universal_plane_init - Initialize a new universal plane object
1138 * @plane: plane object to init
1139 * @possible_crtcs: bitmask of possible CRTCs
1140 * @funcs: callbacks for the new plane
1141 * @formats: array of supported formats (%DRM_FORMAT_*)
1142 * @format_count: number of elements in @formats
1143 * @type: type of plane (overlay, primary, cursor)
1145 * Initializes a plane object of type @type.
1148 * Zero on success, error code on failure.
1150 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1151 unsigned long possible_crtcs,
1152 const struct drm_plane_funcs *funcs,
1153 const uint32_t *formats, uint32_t format_count,
1154 enum drm_plane_type type)
1158 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1162 drm_modeset_lock_init(&plane->mutex);
1164 plane->base.properties = &plane->properties;
1166 plane->funcs = funcs;
1167 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1169 if (!plane->format_types) {
1170 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1171 drm_mode_object_put(dev, &plane->base);
1175 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1176 plane->format_count = format_count;
1177 plane->possible_crtcs = possible_crtcs;
1180 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1181 dev->mode_config.num_total_plane++;
1182 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1183 dev->mode_config.num_overlay_plane++;
1185 drm_object_attach_property(&plane->base,
1186 dev->mode_config.plane_type_property,
1191 EXPORT_SYMBOL(drm_universal_plane_init);
1194 * drm_plane_init - Initialize a legacy plane
1196 * @plane: plane object to init
1197 * @possible_crtcs: bitmask of possible CRTCs
1198 * @funcs: callbacks for the new plane
1199 * @formats: array of supported formats (%DRM_FORMAT_*)
1200 * @format_count: number of elements in @formats
1201 * @is_primary: plane type (primary vs overlay)
1203 * Legacy API to initialize a DRM plane.
1205 * New drivers should call drm_universal_plane_init() instead.
1208 * Zero on success, error code on failure.
1210 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1211 unsigned long possible_crtcs,
1212 const struct drm_plane_funcs *funcs,
1213 const uint32_t *formats, uint32_t format_count,
1216 enum drm_plane_type type;
1218 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1219 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1220 formats, format_count, type);
1222 EXPORT_SYMBOL(drm_plane_init);
1225 * drm_plane_cleanup - Clean up the core plane usage
1226 * @plane: plane to cleanup
1228 * This function cleans up @plane and removes it from the DRM mode setting
1229 * core. Note that the function does *not* free the plane structure itself,
1230 * this is the responsibility of the caller.
1232 void drm_plane_cleanup(struct drm_plane *plane)
1234 struct drm_device *dev = plane->dev;
1236 drm_modeset_lock_all(dev);
1237 kfree(plane->format_types);
1238 drm_mode_object_put(dev, &plane->base);
1240 BUG_ON(list_empty(&plane->head));
1242 list_del(&plane->head);
1243 dev->mode_config.num_total_plane--;
1244 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1245 dev->mode_config.num_overlay_plane--;
1246 drm_modeset_unlock_all(dev);
1248 EXPORT_SYMBOL(drm_plane_cleanup);
1251 * drm_plane_index - find the index of a registered plane
1252 * @plane: plane to find index for
1254 * Given a registered plane, return the index of that CRTC within a DRM
1255 * device's list of planes.
1257 unsigned int drm_plane_index(struct drm_plane *plane)
1259 unsigned int index = 0;
1260 struct drm_plane *tmp;
1262 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1271 EXPORT_SYMBOL(drm_plane_index);
1274 * drm_plane_force_disable - Forcibly disable a plane
1275 * @plane: plane to disable
1277 * Forces the plane to be disabled.
1279 * Used when the plane's current framebuffer is destroyed,
1280 * and when restoring fbdev mode.
1282 void drm_plane_force_disable(struct drm_plane *plane)
1289 plane->old_fb = plane->fb;
1290 ret = plane->funcs->disable_plane(plane);
1292 DRM_ERROR("failed to disable plane with busy fb\n");
1293 plane->old_fb = NULL;
1296 /* disconnect the plane from the fb and crtc: */
1297 __drm_framebuffer_unreference(plane->old_fb);
1298 plane->old_fb = NULL;
1302 EXPORT_SYMBOL(drm_plane_force_disable);
1304 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1306 struct drm_property *edid;
1307 struct drm_property *dpms;
1308 struct drm_property *dev_path;
1311 * Standard properties (apply to all connectors)
1313 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1314 DRM_MODE_PROP_IMMUTABLE,
1316 dev->mode_config.edid_property = edid;
1318 dpms = drm_property_create_enum(dev, 0,
1319 "DPMS", drm_dpms_enum_list,
1320 ARRAY_SIZE(drm_dpms_enum_list));
1321 dev->mode_config.dpms_property = dpms;
1323 dev_path = drm_property_create(dev,
1324 DRM_MODE_PROP_BLOB |
1325 DRM_MODE_PROP_IMMUTABLE,
1327 dev->mode_config.path_property = dev_path;
1332 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1334 struct drm_property *type;
1337 * Standard properties (apply to all planes)
1339 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1340 "type", drm_plane_type_enum_list,
1341 ARRAY_SIZE(drm_plane_type_enum_list));
1342 dev->mode_config.plane_type_property = type;
1348 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1351 * Called by a driver the first time a DVI-I connector is made.
1353 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1355 struct drm_property *dvi_i_selector;
1356 struct drm_property *dvi_i_subconnector;
1358 if (dev->mode_config.dvi_i_select_subconnector_property)
1362 drm_property_create_enum(dev, 0,
1363 "select subconnector",
1364 drm_dvi_i_select_enum_list,
1365 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1366 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1368 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1370 drm_dvi_i_subconnector_enum_list,
1371 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1372 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1376 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1379 * drm_create_tv_properties - create TV specific connector properties
1381 * @num_modes: number of different TV formats (modes) supported
1382 * @modes: array of pointers to strings containing name of each format
1384 * Called by a driver's TV initialization routine, this function creates
1385 * the TV specific connector properties for a given device. Caller is
1386 * responsible for allocating a list of format names and passing them to
1389 int drm_mode_create_tv_properties(struct drm_device *dev,
1390 unsigned int num_modes,
1393 struct drm_property *tv_selector;
1394 struct drm_property *tv_subconnector;
1397 if (dev->mode_config.tv_select_subconnector_property)
1401 * Basic connector properties
1403 tv_selector = drm_property_create_enum(dev, 0,
1404 "select subconnector",
1405 drm_tv_select_enum_list,
1406 ARRAY_SIZE(drm_tv_select_enum_list));
1407 dev->mode_config.tv_select_subconnector_property = tv_selector;
1410 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1412 drm_tv_subconnector_enum_list,
1413 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1414 dev->mode_config.tv_subconnector_property = tv_subconnector;
1417 * Other, TV specific properties: margins & TV modes.
1419 dev->mode_config.tv_left_margin_property =
1420 drm_property_create_range(dev, 0, "left margin", 0, 100);
1422 dev->mode_config.tv_right_margin_property =
1423 drm_property_create_range(dev, 0, "right margin", 0, 100);
1425 dev->mode_config.tv_top_margin_property =
1426 drm_property_create_range(dev, 0, "top margin", 0, 100);
1428 dev->mode_config.tv_bottom_margin_property =
1429 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1431 dev->mode_config.tv_mode_property =
1432 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1434 for (i = 0; i < num_modes; i++)
1435 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1438 dev->mode_config.tv_brightness_property =
1439 drm_property_create_range(dev, 0, "brightness", 0, 100);
1441 dev->mode_config.tv_contrast_property =
1442 drm_property_create_range(dev, 0, "contrast", 0, 100);
1444 dev->mode_config.tv_flicker_reduction_property =
1445 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1447 dev->mode_config.tv_overscan_property =
1448 drm_property_create_range(dev, 0, "overscan", 0, 100);
1450 dev->mode_config.tv_saturation_property =
1451 drm_property_create_range(dev, 0, "saturation", 0, 100);
1453 dev->mode_config.tv_hue_property =
1454 drm_property_create_range(dev, 0, "hue", 0, 100);
1458 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1461 * drm_mode_create_scaling_mode_property - create scaling mode property
1464 * Called by a driver the first time it's needed, must be attached to desired
1467 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1469 struct drm_property *scaling_mode;
1471 if (dev->mode_config.scaling_mode_property)
1475 drm_property_create_enum(dev, 0, "scaling mode",
1476 drm_scaling_mode_enum_list,
1477 ARRAY_SIZE(drm_scaling_mode_enum_list));
1479 dev->mode_config.scaling_mode_property = scaling_mode;
1483 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1486 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1489 * Called by a driver the first time it's needed, must be attached to desired
1493 * Zero on success, negative errno on failure.
1495 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1497 if (dev->mode_config.aspect_ratio_property)
1500 dev->mode_config.aspect_ratio_property =
1501 drm_property_create_enum(dev, 0, "aspect ratio",
1502 drm_aspect_ratio_enum_list,
1503 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1505 if (dev->mode_config.aspect_ratio_property == NULL)
1510 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1513 * drm_mode_create_dirty_property - create dirty property
1516 * Called by a driver the first time it's needed, must be attached to desired
1519 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1521 struct drm_property *dirty_info;
1523 if (dev->mode_config.dirty_info_property)
1527 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1529 drm_dirty_info_enum_list,
1530 ARRAY_SIZE(drm_dirty_info_enum_list));
1531 dev->mode_config.dirty_info_property = dirty_info;
1535 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1538 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1541 * Create the the suggested x/y offset property for connectors.
1543 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1545 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1548 dev->mode_config.suggested_x_property =
1549 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1551 dev->mode_config.suggested_y_property =
1552 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1554 if (dev->mode_config.suggested_x_property == NULL ||
1555 dev->mode_config.suggested_y_property == NULL)
1559 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1561 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1563 uint32_t total_objects = 0;
1565 total_objects += dev->mode_config.num_crtc;
1566 total_objects += dev->mode_config.num_connector;
1567 total_objects += dev->mode_config.num_encoder;
1568 total_objects += dev->mode_config.num_bridge;
1570 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1571 if (!group->id_list)
1574 group->num_crtcs = 0;
1575 group->num_connectors = 0;
1576 group->num_encoders = 0;
1577 group->num_bridges = 0;
1581 void drm_mode_group_destroy(struct drm_mode_group *group)
1583 kfree(group->id_list);
1584 group->id_list = NULL;
1588 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1589 * the drm core's responsibility to set up mode control groups.
1591 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1592 struct drm_mode_group *group)
1594 struct drm_crtc *crtc;
1595 struct drm_encoder *encoder;
1596 struct drm_connector *connector;
1597 struct drm_bridge *bridge;
1600 if ((ret = drm_mode_group_init(dev, group)))
1603 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1604 group->id_list[group->num_crtcs++] = crtc->base.id;
1606 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1607 group->id_list[group->num_crtcs + group->num_encoders++] =
1610 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1611 group->id_list[group->num_crtcs + group->num_encoders +
1612 group->num_connectors++] = connector->base.id;
1614 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1615 group->id_list[group->num_crtcs + group->num_encoders +
1616 group->num_connectors + group->num_bridges++] =
1621 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1623 void drm_reinit_primary_mode_group(struct drm_device *dev)
1625 drm_modeset_lock_all(dev);
1626 drm_mode_group_destroy(&dev->primary->mode_group);
1627 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1628 drm_modeset_unlock_all(dev);
1630 EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1633 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1634 * @out: drm_mode_modeinfo struct to return to the user
1635 * @in: drm_display_mode to use
1637 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1640 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1641 const struct drm_display_mode *in)
1643 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1644 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1645 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1646 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1647 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1648 "timing values too large for mode info\n");
1650 out->clock = in->clock;
1651 out->hdisplay = in->hdisplay;
1652 out->hsync_start = in->hsync_start;
1653 out->hsync_end = in->hsync_end;
1654 out->htotal = in->htotal;
1655 out->hskew = in->hskew;
1656 out->vdisplay = in->vdisplay;
1657 out->vsync_start = in->vsync_start;
1658 out->vsync_end = in->vsync_end;
1659 out->vtotal = in->vtotal;
1660 out->vscan = in->vscan;
1661 out->vrefresh = in->vrefresh;
1662 out->flags = in->flags;
1663 out->type = in->type;
1664 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1665 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1669 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1670 * @out: drm_display_mode to return to the user
1671 * @in: drm_mode_modeinfo to use
1673 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1677 * Zero on success, negative errno on failure.
1679 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1680 const struct drm_mode_modeinfo *in)
1682 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1685 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1688 out->clock = in->clock;
1689 out->hdisplay = in->hdisplay;
1690 out->hsync_start = in->hsync_start;
1691 out->hsync_end = in->hsync_end;
1692 out->htotal = in->htotal;
1693 out->hskew = in->hskew;
1694 out->vdisplay = in->vdisplay;
1695 out->vsync_start = in->vsync_start;
1696 out->vsync_end = in->vsync_end;
1697 out->vtotal = in->vtotal;
1698 out->vscan = in->vscan;
1699 out->vrefresh = in->vrefresh;
1700 out->flags = in->flags;
1701 out->type = in->type;
1702 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1703 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1709 * drm_mode_getresources - get graphics configuration
1710 * @dev: drm device for the ioctl
1711 * @data: data pointer for the ioctl
1712 * @file_priv: drm file for the ioctl call
1714 * Construct a set of configuration description structures and return
1715 * them to the user, including CRTC, connector and framebuffer configuration.
1717 * Called by the user via ioctl.
1720 * Zero on success, negative errno on failure.
1722 int drm_mode_getresources(struct drm_device *dev, void *data,
1723 struct drm_file *file_priv)
1725 struct drm_mode_card_res *card_res = data;
1726 struct list_head *lh;
1727 struct drm_framebuffer *fb;
1728 struct drm_connector *connector;
1729 struct drm_crtc *crtc;
1730 struct drm_encoder *encoder;
1732 int connector_count = 0;
1735 int encoder_count = 0;
1737 uint32_t __user *fb_id;
1738 uint32_t __user *crtc_id;
1739 uint32_t __user *connector_id;
1740 uint32_t __user *encoder_id;
1741 struct drm_mode_group *mode_group;
1743 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1747 mutex_lock(&file_priv->fbs_lock);
1749 * For the non-control nodes we need to limit the list of resources
1750 * by IDs in the group list for this node
1752 list_for_each(lh, &file_priv->fbs)
1755 /* handle this in 4 parts */
1757 if (card_res->count_fbs >= fb_count) {
1759 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1760 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1761 if (put_user(fb->base.id, fb_id + copied)) {
1762 mutex_unlock(&file_priv->fbs_lock);
1768 card_res->count_fbs = fb_count;
1769 mutex_unlock(&file_priv->fbs_lock);
1771 /* mode_config.mutex protects the connector list against e.g. DP MST
1772 * connector hot-adding. CRTC/Plane lists are invariant. */
1773 mutex_lock(&dev->mode_config.mutex);
1774 if (!drm_is_primary_client(file_priv)) {
1777 list_for_each(lh, &dev->mode_config.crtc_list)
1780 list_for_each(lh, &dev->mode_config.connector_list)
1783 list_for_each(lh, &dev->mode_config.encoder_list)
1787 mode_group = &file_priv->master->minor->mode_group;
1788 crtc_count = mode_group->num_crtcs;
1789 connector_count = mode_group->num_connectors;
1790 encoder_count = mode_group->num_encoders;
1793 card_res->max_height = dev->mode_config.max_height;
1794 card_res->min_height = dev->mode_config.min_height;
1795 card_res->max_width = dev->mode_config.max_width;
1796 card_res->min_width = dev->mode_config.min_width;
1799 if (card_res->count_crtcs >= crtc_count) {
1801 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1803 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1805 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1806 if (put_user(crtc->base.id, crtc_id + copied)) {
1813 for (i = 0; i < mode_group->num_crtcs; i++) {
1814 if (put_user(mode_group->id_list[i],
1815 crtc_id + copied)) {
1823 card_res->count_crtcs = crtc_count;
1826 if (card_res->count_encoders >= encoder_count) {
1828 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1830 list_for_each_entry(encoder,
1831 &dev->mode_config.encoder_list,
1833 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1835 if (put_user(encoder->base.id, encoder_id +
1843 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1844 if (put_user(mode_group->id_list[i],
1845 encoder_id + copied)) {
1854 card_res->count_encoders = encoder_count;
1857 if (card_res->count_connectors >= connector_count) {
1859 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1861 list_for_each_entry(connector,
1862 &dev->mode_config.connector_list,
1864 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1867 if (put_user(connector->base.id,
1868 connector_id + copied)) {
1875 int start = mode_group->num_crtcs +
1876 mode_group->num_encoders;
1877 for (i = start; i < start + mode_group->num_connectors; i++) {
1878 if (put_user(mode_group->id_list[i],
1879 connector_id + copied)) {
1887 card_res->count_connectors = connector_count;
1889 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1890 card_res->count_connectors, card_res->count_encoders);
1893 mutex_unlock(&dev->mode_config.mutex);
1898 * drm_mode_getcrtc - get CRTC configuration
1899 * @dev: drm device for the ioctl
1900 * @data: data pointer for the ioctl
1901 * @file_priv: drm file for the ioctl call
1903 * Construct a CRTC configuration structure to return to the user.
1905 * Called by the user via ioctl.
1908 * Zero on success, negative errno on failure.
1910 int drm_mode_getcrtc(struct drm_device *dev,
1911 void *data, struct drm_file *file_priv)
1913 struct drm_mode_crtc *crtc_resp = data;
1914 struct drm_crtc *crtc;
1916 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1919 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1923 drm_modeset_lock_crtc(crtc, crtc->primary);
1924 crtc_resp->x = crtc->x;
1925 crtc_resp->y = crtc->y;
1926 crtc_resp->gamma_size = crtc->gamma_size;
1927 if (crtc->primary->fb)
1928 crtc_resp->fb_id = crtc->primary->fb->base.id;
1930 crtc_resp->fb_id = 0;
1932 if (crtc->enabled) {
1934 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1935 crtc_resp->mode_valid = 1;
1938 crtc_resp->mode_valid = 0;
1940 drm_modeset_unlock_crtc(crtc);
1945 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1946 const struct drm_file *file_priv)
1949 * If user-space hasn't configured the driver to expose the stereo 3D
1950 * modes, don't expose them.
1952 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1959 * drm_mode_getconnector - get connector configuration
1960 * @dev: drm device for the ioctl
1961 * @data: data pointer for the ioctl
1962 * @file_priv: drm file for the ioctl call
1964 * Construct a connector configuration structure to return to the user.
1966 * Called by the user via ioctl.
1969 * Zero on success, negative errno on failure.
1971 int drm_mode_getconnector(struct drm_device *dev, void *data,
1972 struct drm_file *file_priv)
1974 struct drm_mode_get_connector *out_resp = data;
1975 struct drm_connector *connector;
1976 struct drm_display_mode *mode;
1978 int props_count = 0;
1979 int encoders_count = 0;
1983 struct drm_mode_modeinfo u_mode;
1984 struct drm_mode_modeinfo __user *mode_ptr;
1985 uint32_t __user *prop_ptr;
1986 uint64_t __user *prop_values;
1987 uint32_t __user *encoder_ptr;
1989 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1992 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1994 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1996 mutex_lock(&dev->mode_config.mutex);
1998 connector = drm_connector_find(dev, out_resp->connector_id);
2004 props_count = connector->properties.count;
2006 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2007 if (connector->encoder_ids[i] != 0) {
2012 if (out_resp->count_modes == 0) {
2013 connector->funcs->fill_modes(connector,
2014 dev->mode_config.max_width,
2015 dev->mode_config.max_height);
2018 /* delayed so we get modes regardless of pre-fill_modes state */
2019 list_for_each_entry(mode, &connector->modes, head)
2020 if (drm_mode_expose_to_userspace(mode, file_priv))
2023 out_resp->connector_id = connector->base.id;
2024 out_resp->connector_type = connector->connector_type;
2025 out_resp->connector_type_id = connector->connector_type_id;
2026 out_resp->mm_width = connector->display_info.width_mm;
2027 out_resp->mm_height = connector->display_info.height_mm;
2028 out_resp->subpixel = connector->display_info.subpixel_order;
2029 out_resp->connection = connector->status;
2030 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2031 if (connector->encoder)
2032 out_resp->encoder_id = connector->encoder->base.id;
2034 out_resp->encoder_id = 0;
2035 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2038 * This ioctl is called twice, once to determine how much space is
2039 * needed, and the 2nd time to fill it.
2041 if ((out_resp->count_modes >= mode_count) && mode_count) {
2043 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2044 list_for_each_entry(mode, &connector->modes, head) {
2045 if (!drm_mode_expose_to_userspace(mode, file_priv))
2048 drm_crtc_convert_to_umode(&u_mode, mode);
2049 if (copy_to_user(mode_ptr + copied,
2050 &u_mode, sizeof(u_mode))) {
2057 out_resp->count_modes = mode_count;
2059 if ((out_resp->count_props >= props_count) && props_count) {
2061 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
2062 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
2063 for (i = 0; i < connector->properties.count; i++) {
2064 if (put_user(connector->properties.ids[i],
2065 prop_ptr + copied)) {
2070 if (put_user(connector->properties.values[i],
2071 prop_values + copied)) {
2078 out_resp->count_props = props_count;
2080 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2082 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2083 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2084 if (connector->encoder_ids[i] != 0) {
2085 if (put_user(connector->encoder_ids[i],
2086 encoder_ptr + copied)) {
2094 out_resp->count_encoders = encoders_count;
2097 mutex_unlock(&dev->mode_config.mutex);
2103 * drm_mode_getencoder - get encoder configuration
2104 * @dev: drm device for the ioctl
2105 * @data: data pointer for the ioctl
2106 * @file_priv: drm file for the ioctl call
2108 * Construct a encoder configuration structure to return to the user.
2110 * Called by the user via ioctl.
2113 * Zero on success, negative errno on failure.
2115 int drm_mode_getencoder(struct drm_device *dev, void *data,
2116 struct drm_file *file_priv)
2118 struct drm_mode_get_encoder *enc_resp = data;
2119 struct drm_encoder *encoder;
2121 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2124 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2128 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2130 enc_resp->crtc_id = encoder->crtc->base.id;
2132 enc_resp->crtc_id = 0;
2133 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2135 enc_resp->encoder_type = encoder->encoder_type;
2136 enc_resp->encoder_id = encoder->base.id;
2137 enc_resp->possible_crtcs = encoder->possible_crtcs;
2138 enc_resp->possible_clones = encoder->possible_clones;
2144 * drm_mode_getplane_res - enumerate all plane resources
2147 * @file_priv: DRM file info
2149 * Construct a list of plane ids to return to the user.
2151 * Called by the user via ioctl.
2154 * Zero on success, negative errno on failure.
2156 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2157 struct drm_file *file_priv)
2159 struct drm_mode_get_plane_res *plane_resp = data;
2160 struct drm_mode_config *config;
2161 struct drm_plane *plane;
2162 uint32_t __user *plane_ptr;
2164 unsigned num_planes;
2166 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2169 config = &dev->mode_config;
2171 if (file_priv->universal_planes)
2172 num_planes = config->num_total_plane;
2174 num_planes = config->num_overlay_plane;
2177 * This ioctl is called twice, once to determine how much space is
2178 * needed, and the 2nd time to fill it.
2181 (plane_resp->count_planes >= num_planes)) {
2182 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2184 /* Plane lists are invariant, no locking needed. */
2185 list_for_each_entry(plane, &config->plane_list, head) {
2187 * Unless userspace set the 'universal planes'
2188 * capability bit, only advertise overlays.
2190 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2191 !file_priv->universal_planes)
2194 if (put_user(plane->base.id, plane_ptr + copied))
2199 plane_resp->count_planes = num_planes;
2205 * drm_mode_getplane - get plane configuration
2208 * @file_priv: DRM file info
2210 * Construct a plane configuration structure 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(struct drm_device *dev, void *data,
2218 struct drm_file *file_priv)
2220 struct drm_mode_get_plane *plane_resp = data;
2221 struct drm_plane *plane;
2222 uint32_t __user *format_ptr;
2224 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2227 plane = drm_plane_find(dev, plane_resp->plane_id);
2231 drm_modeset_lock(&plane->mutex, NULL);
2233 plane_resp->crtc_id = plane->crtc->base.id;
2235 plane_resp->crtc_id = 0;
2238 plane_resp->fb_id = plane->fb->base.id;
2240 plane_resp->fb_id = 0;
2241 drm_modeset_unlock(&plane->mutex);
2243 plane_resp->plane_id = plane->base.id;
2244 plane_resp->possible_crtcs = plane->possible_crtcs;
2245 plane_resp->gamma_size = 0;
2248 * This ioctl is called twice, once to determine how much space is
2249 * needed, and the 2nd time to fill it.
2251 if (plane->format_count &&
2252 (plane_resp->count_format_types >= plane->format_count)) {
2253 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2254 if (copy_to_user(format_ptr,
2255 plane->format_types,
2256 sizeof(uint32_t) * plane->format_count)) {
2260 plane_resp->count_format_types = plane->format_count;
2266 * setplane_internal - setplane handler for internal callers
2268 * Note that we assume an extra reference has already been taken on fb. If the
2269 * update fails, this reference will be dropped before return; if it succeeds,
2270 * the previous framebuffer (if any) will be unreferenced instead.
2272 * src_{x,y,w,h} are provided in 16.16 fixed point format
2274 static int __setplane_internal(struct drm_plane *plane,
2275 struct drm_crtc *crtc,
2276 struct drm_framebuffer *fb,
2277 int32_t crtc_x, int32_t crtc_y,
2278 uint32_t crtc_w, uint32_t crtc_h,
2279 /* src_{x,y,w,h} values are 16.16 fixed point */
2280 uint32_t src_x, uint32_t src_y,
2281 uint32_t src_w, uint32_t src_h)
2284 unsigned int fb_width, fb_height;
2287 /* No fb means shut it down */
2289 plane->old_fb = plane->fb;
2290 ret = plane->funcs->disable_plane(plane);
2295 plane->old_fb = NULL;
2300 /* Check whether this plane is usable on this CRTC */
2301 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2302 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2307 /* Check whether this plane supports the fb pixel format. */
2308 for (i = 0; i < plane->format_count; i++)
2309 if (fb->pixel_format == plane->format_types[i])
2311 if (i == plane->format_count) {
2312 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2313 drm_get_format_name(fb->pixel_format));
2318 fb_width = fb->width << 16;
2319 fb_height = fb->height << 16;
2321 /* Make sure source coordinates are inside the fb. */
2322 if (src_w > fb_width ||
2323 src_x > fb_width - src_w ||
2324 src_h > fb_height ||
2325 src_y > fb_height - src_h) {
2326 DRM_DEBUG_KMS("Invalid source coordinates "
2327 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2328 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2329 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2330 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2331 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2336 plane->old_fb = plane->fb;
2337 ret = plane->funcs->update_plane(plane, crtc, fb,
2338 crtc_x, crtc_y, crtc_w, crtc_h,
2339 src_x, src_y, src_w, src_h);
2345 plane->old_fb = NULL;
2350 drm_framebuffer_unreference(fb);
2352 drm_framebuffer_unreference(plane->old_fb);
2353 plane->old_fb = NULL;
2358 static int setplane_internal(struct drm_plane *plane,
2359 struct drm_crtc *crtc,
2360 struct drm_framebuffer *fb,
2361 int32_t crtc_x, int32_t crtc_y,
2362 uint32_t crtc_w, uint32_t crtc_h,
2363 /* src_{x,y,w,h} values are 16.16 fixed point */
2364 uint32_t src_x, uint32_t src_y,
2365 uint32_t src_w, uint32_t src_h)
2369 drm_modeset_lock_all(plane->dev);
2370 ret = __setplane_internal(plane, crtc, fb,
2371 crtc_x, crtc_y, crtc_w, crtc_h,
2372 src_x, src_y, src_w, src_h);
2373 drm_modeset_unlock_all(plane->dev);
2379 * drm_mode_setplane - configure a plane's configuration
2381 * @data: ioctl data*
2382 * @file_priv: DRM file info
2384 * Set plane configuration, including placement, fb, scaling, and other factors.
2385 * Or pass a NULL fb to disable (planes may be disabled without providing a
2389 * Zero on success, negative errno on failure.
2391 int drm_mode_setplane(struct drm_device *dev, void *data,
2392 struct drm_file *file_priv)
2394 struct drm_mode_set_plane *plane_req = data;
2395 struct drm_mode_object *obj;
2396 struct drm_plane *plane;
2397 struct drm_crtc *crtc = NULL;
2398 struct drm_framebuffer *fb = NULL;
2400 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2403 /* Give drivers some help against integer overflows */
2404 if (plane_req->crtc_w > INT_MAX ||
2405 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2406 plane_req->crtc_h > INT_MAX ||
2407 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2408 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2409 plane_req->crtc_w, plane_req->crtc_h,
2410 plane_req->crtc_x, plane_req->crtc_y);
2415 * First, find the plane, crtc, and fb objects. If not available,
2416 * we don't bother to call the driver.
2418 obj = drm_mode_object_find(dev, plane_req->plane_id,
2419 DRM_MODE_OBJECT_PLANE);
2421 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2422 plane_req->plane_id);
2425 plane = obj_to_plane(obj);
2427 if (plane_req->fb_id) {
2428 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2430 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2435 obj = drm_mode_object_find(dev, plane_req->crtc_id,
2436 DRM_MODE_OBJECT_CRTC);
2438 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2439 plane_req->crtc_id);
2442 crtc = obj_to_crtc(obj);
2446 * setplane_internal will take care of deref'ing either the old or new
2447 * framebuffer depending on success.
2449 return setplane_internal(plane, crtc, fb,
2450 plane_req->crtc_x, plane_req->crtc_y,
2451 plane_req->crtc_w, plane_req->crtc_h,
2452 plane_req->src_x, plane_req->src_y,
2453 plane_req->src_w, plane_req->src_h);
2457 * drm_mode_set_config_internal - helper to call ->set_config
2458 * @set: modeset config to set
2460 * This is a little helper to wrap internal calls to the ->set_config driver
2461 * interface. The only thing it adds is correct refcounting dance.
2464 * Zero on success, negative errno on failure.
2466 int drm_mode_set_config_internal(struct drm_mode_set *set)
2468 struct drm_crtc *crtc = set->crtc;
2469 struct drm_framebuffer *fb;
2470 struct drm_crtc *tmp;
2474 * NOTE: ->set_config can also disable other crtcs (if we steal all
2475 * connectors from it), hence we need to refcount the fbs across all
2476 * crtcs. Atomic modeset will have saner semantics ...
2478 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2479 tmp->primary->old_fb = tmp->primary->fb;
2483 ret = crtc->funcs->set_config(set);
2485 crtc->primary->crtc = crtc;
2486 crtc->primary->fb = fb;
2489 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2490 if (tmp->primary->fb)
2491 drm_framebuffer_reference(tmp->primary->fb);
2492 if (tmp->primary->old_fb)
2493 drm_framebuffer_unreference(tmp->primary->old_fb);
2494 tmp->primary->old_fb = NULL;
2499 EXPORT_SYMBOL(drm_mode_set_config_internal);
2502 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2504 * @crtc: CRTC that framebuffer will be displayed on
2507 * @mode: mode that framebuffer will be displayed under
2508 * @fb: framebuffer to check size of
2510 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2512 const struct drm_display_mode *mode,
2513 const struct drm_framebuffer *fb)
2516 int hdisplay, vdisplay;
2518 hdisplay = mode->hdisplay;
2519 vdisplay = mode->vdisplay;
2521 if (drm_mode_is_stereo(mode)) {
2522 struct drm_display_mode adjusted = *mode;
2524 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2525 hdisplay = adjusted.crtc_hdisplay;
2526 vdisplay = adjusted.crtc_vdisplay;
2529 if (crtc->invert_dimensions)
2530 swap(hdisplay, vdisplay);
2532 if (hdisplay > fb->width ||
2533 vdisplay > fb->height ||
2534 x > fb->width - hdisplay ||
2535 y > fb->height - vdisplay) {
2536 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2537 fb->width, fb->height, hdisplay, vdisplay, x, y,
2538 crtc->invert_dimensions ? " (inverted)" : "");
2544 EXPORT_SYMBOL(drm_crtc_check_viewport);
2547 * drm_mode_setcrtc - set CRTC configuration
2548 * @dev: drm device for the ioctl
2549 * @data: data pointer for the ioctl
2550 * @file_priv: drm file for the ioctl call
2552 * Build a new CRTC configuration based on user request.
2554 * Called by the user via ioctl.
2557 * Zero on success, negative errno on failure.
2559 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2560 struct drm_file *file_priv)
2562 struct drm_mode_config *config = &dev->mode_config;
2563 struct drm_mode_crtc *crtc_req = data;
2564 struct drm_crtc *crtc;
2565 struct drm_connector **connector_set = NULL, *connector;
2566 struct drm_framebuffer *fb = NULL;
2567 struct drm_display_mode *mode = NULL;
2568 struct drm_mode_set set;
2569 uint32_t __user *set_connectors_ptr;
2573 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2576 /* For some reason crtc x/y offsets are signed internally. */
2577 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2580 drm_modeset_lock_all(dev);
2581 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2583 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2587 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2589 if (crtc_req->mode_valid) {
2590 /* If we have a mode we need a framebuffer. */
2591 /* If we pass -1, set the mode with the currently bound fb */
2592 if (crtc_req->fb_id == -1) {
2593 if (!crtc->primary->fb) {
2594 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2598 fb = crtc->primary->fb;
2599 /* Make refcounting symmetric with the lookup path. */
2600 drm_framebuffer_reference(fb);
2602 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2604 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2611 mode = drm_mode_create(dev);
2617 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2619 DRM_DEBUG_KMS("Invalid mode\n");
2623 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2625 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2632 if (crtc_req->count_connectors == 0 && mode) {
2633 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2638 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2639 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2640 crtc_req->count_connectors);
2645 if (crtc_req->count_connectors > 0) {
2648 /* Avoid unbounded kernel memory allocation */
2649 if (crtc_req->count_connectors > config->num_connector) {
2654 connector_set = kmalloc(crtc_req->count_connectors *
2655 sizeof(struct drm_connector *),
2657 if (!connector_set) {
2662 for (i = 0; i < crtc_req->count_connectors; i++) {
2663 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2664 if (get_user(out_id, &set_connectors_ptr[i])) {
2669 connector = drm_connector_find(dev, out_id);
2671 DRM_DEBUG_KMS("Connector id %d unknown\n",
2676 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2680 connector_set[i] = connector;
2685 set.x = crtc_req->x;
2686 set.y = crtc_req->y;
2688 set.connectors = connector_set;
2689 set.num_connectors = crtc_req->count_connectors;
2691 ret = drm_mode_set_config_internal(&set);
2695 drm_framebuffer_unreference(fb);
2697 kfree(connector_set);
2698 drm_mode_destroy(dev, mode);
2699 drm_modeset_unlock_all(dev);
2704 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2705 * universal plane handler call
2706 * @crtc: crtc to update cursor for
2707 * @req: data pointer for the ioctl
2708 * @file_priv: drm file for the ioctl call
2710 * Legacy cursor ioctl's work directly with driver buffer handles. To
2711 * translate legacy ioctl calls into universal plane handler calls, we need to
2712 * wrap the native buffer handle in a drm_framebuffer.
2714 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2715 * buffer with a pitch of 4*width; the universal plane interface should be used
2716 * directly in cases where the hardware can support other buffer settings and
2717 * userspace wants to make use of these capabilities.
2720 * Zero on success, negative errno on failure.
2722 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2723 struct drm_mode_cursor2 *req,
2724 struct drm_file *file_priv)
2726 struct drm_device *dev = crtc->dev;
2727 struct drm_framebuffer *fb = NULL;
2728 struct drm_mode_fb_cmd2 fbreq = {
2729 .width = req->width,
2730 .height = req->height,
2731 .pixel_format = DRM_FORMAT_ARGB8888,
2732 .pitches = { req->width * 4 },
2733 .handles = { req->handle },
2735 int32_t crtc_x, crtc_y;
2736 uint32_t crtc_w = 0, crtc_h = 0;
2737 uint32_t src_w = 0, src_h = 0;
2740 BUG_ON(!crtc->cursor);
2741 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2744 * Obtain fb we'll be using (either new or existing) and take an extra
2745 * reference to it if fb != null. setplane will take care of dropping
2746 * the reference if the plane update fails.
2748 if (req->flags & DRM_MODE_CURSOR_BO) {
2750 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2752 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2756 drm_framebuffer_reference(fb);
2761 fb = crtc->cursor->fb;
2763 drm_framebuffer_reference(fb);
2766 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2770 crtc_x = crtc->cursor_x;
2771 crtc_y = crtc->cursor_y;
2776 crtc_h = fb->height;
2777 src_w = fb->width << 16;
2778 src_h = fb->height << 16;
2782 * setplane_internal will take care of deref'ing either the old or new
2783 * framebuffer depending on success.
2785 ret = __setplane_internal(crtc->cursor, crtc, fb,
2786 crtc_x, crtc_y, crtc_w, crtc_h,
2787 0, 0, src_w, src_h);
2789 /* Update successful; save new cursor position, if necessary */
2790 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2791 crtc->cursor_x = req->x;
2792 crtc->cursor_y = req->y;
2798 static int drm_mode_cursor_common(struct drm_device *dev,
2799 struct drm_mode_cursor2 *req,
2800 struct drm_file *file_priv)
2802 struct drm_crtc *crtc;
2805 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2808 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2811 crtc = drm_crtc_find(dev, req->crtc_id);
2813 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2818 * If this crtc has a universal cursor plane, call that plane's update
2819 * handler rather than using legacy cursor handlers.
2821 drm_modeset_lock_crtc(crtc, crtc->cursor);
2823 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2827 if (req->flags & DRM_MODE_CURSOR_BO) {
2828 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2832 /* Turns off the cursor if handle is 0 */
2833 if (crtc->funcs->cursor_set2)
2834 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2835 req->width, req->height, req->hot_x, req->hot_y);
2837 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2838 req->width, req->height);
2841 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2842 if (crtc->funcs->cursor_move) {
2843 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2850 drm_modeset_unlock_crtc(crtc);
2858 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2859 * @dev: drm device for the ioctl
2860 * @data: data pointer for the ioctl
2861 * @file_priv: drm file for the ioctl call
2863 * Set the cursor configuration based on user request.
2865 * Called by the user via ioctl.
2868 * Zero on success, negative errno on failure.
2870 int drm_mode_cursor_ioctl(struct drm_device *dev,
2871 void *data, struct drm_file *file_priv)
2873 struct drm_mode_cursor *req = data;
2874 struct drm_mode_cursor2 new_req;
2876 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2877 new_req.hot_x = new_req.hot_y = 0;
2879 return drm_mode_cursor_common(dev, &new_req, file_priv);
2883 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2884 * @dev: drm device for the ioctl
2885 * @data: data pointer for the ioctl
2886 * @file_priv: drm file for the ioctl call
2888 * Set the cursor configuration based on user request. This implements the 2nd
2889 * version of the cursor ioctl, which allows userspace to additionally specify
2890 * the hotspot of the pointer.
2892 * Called by the user via ioctl.
2895 * Zero on success, negative errno on failure.
2897 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2898 void *data, struct drm_file *file_priv)
2900 struct drm_mode_cursor2 *req = data;
2901 return drm_mode_cursor_common(dev, req, file_priv);
2905 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2906 * @bpp: bits per pixels
2907 * @depth: bit depth per pixel
2909 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2910 * Useful in fbdev emulation code, since that deals in those values.
2912 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2918 fmt = DRM_FORMAT_C8;
2922 fmt = DRM_FORMAT_XRGB1555;
2924 fmt = DRM_FORMAT_RGB565;
2927 fmt = DRM_FORMAT_RGB888;
2931 fmt = DRM_FORMAT_XRGB8888;
2932 else if (depth == 30)
2933 fmt = DRM_FORMAT_XRGB2101010;
2935 fmt = DRM_FORMAT_ARGB8888;
2938 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2939 fmt = DRM_FORMAT_XRGB8888;
2945 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2948 * drm_mode_addfb - add an FB to the graphics configuration
2949 * @dev: drm device for the ioctl
2950 * @data: data pointer for the ioctl
2951 * @file_priv: drm file for the ioctl call
2953 * Add a new FB to the specified CRTC, given a user request. This is the
2954 * original addfb ioctl which only supported RGB formats.
2956 * Called by the user via ioctl.
2959 * Zero on success, negative errno on failure.
2961 int drm_mode_addfb(struct drm_device *dev,
2962 void *data, struct drm_file *file_priv)
2964 struct drm_mode_fb_cmd *or = data;
2965 struct drm_mode_fb_cmd2 r = {};
2968 /* convert to new format and call new ioctl */
2969 r.fb_id = or->fb_id;
2970 r.width = or->width;
2971 r.height = or->height;
2972 r.pitches[0] = or->pitch;
2973 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2974 r.handles[0] = or->handle;
2976 ret = drm_mode_addfb2(dev, &r, file_priv);
2980 or->fb_id = r.fb_id;
2985 static int format_check(const struct drm_mode_fb_cmd2 *r)
2987 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2991 case DRM_FORMAT_RGB332:
2992 case DRM_FORMAT_BGR233:
2993 case DRM_FORMAT_XRGB4444:
2994 case DRM_FORMAT_XBGR4444:
2995 case DRM_FORMAT_RGBX4444:
2996 case DRM_FORMAT_BGRX4444:
2997 case DRM_FORMAT_ARGB4444:
2998 case DRM_FORMAT_ABGR4444:
2999 case DRM_FORMAT_RGBA4444:
3000 case DRM_FORMAT_BGRA4444:
3001 case DRM_FORMAT_XRGB1555:
3002 case DRM_FORMAT_XBGR1555:
3003 case DRM_FORMAT_RGBX5551:
3004 case DRM_FORMAT_BGRX5551:
3005 case DRM_FORMAT_ARGB1555:
3006 case DRM_FORMAT_ABGR1555:
3007 case DRM_FORMAT_RGBA5551:
3008 case DRM_FORMAT_BGRA5551:
3009 case DRM_FORMAT_RGB565:
3010 case DRM_FORMAT_BGR565:
3011 case DRM_FORMAT_RGB888:
3012 case DRM_FORMAT_BGR888:
3013 case DRM_FORMAT_XRGB8888:
3014 case DRM_FORMAT_XBGR8888:
3015 case DRM_FORMAT_RGBX8888:
3016 case DRM_FORMAT_BGRX8888:
3017 case DRM_FORMAT_ARGB8888:
3018 case DRM_FORMAT_ABGR8888:
3019 case DRM_FORMAT_RGBA8888:
3020 case DRM_FORMAT_BGRA8888:
3021 case DRM_FORMAT_XRGB2101010:
3022 case DRM_FORMAT_XBGR2101010:
3023 case DRM_FORMAT_RGBX1010102:
3024 case DRM_FORMAT_BGRX1010102:
3025 case DRM_FORMAT_ARGB2101010:
3026 case DRM_FORMAT_ABGR2101010:
3027 case DRM_FORMAT_RGBA1010102:
3028 case DRM_FORMAT_BGRA1010102:
3029 case DRM_FORMAT_YUYV:
3030 case DRM_FORMAT_YVYU:
3031 case DRM_FORMAT_UYVY:
3032 case DRM_FORMAT_VYUY:
3033 case DRM_FORMAT_AYUV:
3034 case DRM_FORMAT_NV12:
3035 case DRM_FORMAT_NV21:
3036 case DRM_FORMAT_NV16:
3037 case DRM_FORMAT_NV61:
3038 case DRM_FORMAT_NV24:
3039 case DRM_FORMAT_NV42:
3040 case DRM_FORMAT_YUV410:
3041 case DRM_FORMAT_YVU410:
3042 case DRM_FORMAT_YUV411:
3043 case DRM_FORMAT_YVU411:
3044 case DRM_FORMAT_YUV420:
3045 case DRM_FORMAT_YVU420:
3046 case DRM_FORMAT_YUV422:
3047 case DRM_FORMAT_YVU422:
3048 case DRM_FORMAT_YUV444:
3049 case DRM_FORMAT_YVU444:
3052 DRM_DEBUG_KMS("invalid pixel format %s\n",
3053 drm_get_format_name(r->pixel_format));
3058 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3060 int ret, hsub, vsub, num_planes, i;
3062 ret = format_check(r);
3064 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3065 drm_get_format_name(r->pixel_format));
3069 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3070 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3071 num_planes = drm_format_num_planes(r->pixel_format);
3073 if (r->width == 0 || r->width % hsub) {
3074 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3078 if (r->height == 0 || r->height % vsub) {
3079 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3083 for (i = 0; i < num_planes; i++) {
3084 unsigned int width = r->width / (i != 0 ? hsub : 1);
3085 unsigned int height = r->height / (i != 0 ? vsub : 1);
3086 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3088 if (!r->handles[i]) {
3089 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3093 if ((uint64_t) width * cpp > UINT_MAX)
3096 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3099 if (r->pitches[i] < width * cpp) {
3100 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3108 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3109 struct drm_mode_fb_cmd2 *r,
3110 struct drm_file *file_priv)
3112 struct drm_mode_config *config = &dev->mode_config;
3113 struct drm_framebuffer *fb;
3116 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3117 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3118 return ERR_PTR(-EINVAL);
3121 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3122 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3123 r->width, config->min_width, config->max_width);
3124 return ERR_PTR(-EINVAL);
3126 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3127 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3128 r->height, config->min_height, config->max_height);
3129 return ERR_PTR(-EINVAL);
3132 ret = framebuffer_check(r);
3134 return ERR_PTR(ret);
3136 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3138 DRM_DEBUG_KMS("could not create framebuffer\n");
3142 mutex_lock(&file_priv->fbs_lock);
3143 r->fb_id = fb->base.id;
3144 list_add(&fb->filp_head, &file_priv->fbs);
3145 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3146 mutex_unlock(&file_priv->fbs_lock);
3152 * drm_mode_addfb2 - add an FB to the graphics configuration
3153 * @dev: drm device for the ioctl
3154 * @data: data pointer for the ioctl
3155 * @file_priv: drm file for the ioctl call
3157 * Add a new FB to the specified CRTC, given a user request with format. This is
3158 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3159 * and uses fourcc codes as pixel format specifiers.
3161 * Called by the user via ioctl.
3164 * Zero on success, negative errno on failure.
3166 int drm_mode_addfb2(struct drm_device *dev,
3167 void *data, struct drm_file *file_priv)
3169 struct drm_framebuffer *fb;
3171 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3174 fb = add_framebuffer_internal(dev, data, file_priv);
3182 * drm_mode_rmfb - remove an FB from the configuration
3183 * @dev: drm device for the ioctl
3184 * @data: data pointer for the ioctl
3185 * @file_priv: drm file for the ioctl call
3187 * Remove the FB specified by the user.
3189 * Called by the user via ioctl.
3192 * Zero on success, negative errno on failure.
3194 int drm_mode_rmfb(struct drm_device *dev,
3195 void *data, struct drm_file *file_priv)
3197 struct drm_framebuffer *fb = NULL;
3198 struct drm_framebuffer *fbl = NULL;
3199 uint32_t *id = data;
3202 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3205 mutex_lock(&file_priv->fbs_lock);
3206 mutex_lock(&dev->mode_config.fb_lock);
3207 fb = __drm_framebuffer_lookup(dev, *id);
3211 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3217 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3218 __drm_framebuffer_unregister(dev, fb);
3220 list_del_init(&fb->filp_head);
3221 mutex_unlock(&dev->mode_config.fb_lock);
3222 mutex_unlock(&file_priv->fbs_lock);
3224 drm_framebuffer_remove(fb);
3229 mutex_unlock(&dev->mode_config.fb_lock);
3230 mutex_unlock(&file_priv->fbs_lock);
3236 * drm_mode_getfb - get FB info
3237 * @dev: drm device for the ioctl
3238 * @data: data pointer for the ioctl
3239 * @file_priv: drm file for the ioctl call
3241 * Lookup the FB given its ID and return info about it.
3243 * Called by the user via ioctl.
3246 * Zero on success, negative errno on failure.
3248 int drm_mode_getfb(struct drm_device *dev,
3249 void *data, struct drm_file *file_priv)
3251 struct drm_mode_fb_cmd *r = data;
3252 struct drm_framebuffer *fb;
3255 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3258 fb = drm_framebuffer_lookup(dev, r->fb_id);
3262 r->height = fb->height;
3263 r->width = fb->width;
3264 r->depth = fb->depth;
3265 r->bpp = fb->bits_per_pixel;
3266 r->pitch = fb->pitches[0];
3267 if (fb->funcs->create_handle) {
3268 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3269 drm_is_control_client(file_priv)) {
3270 ret = fb->funcs->create_handle(fb, file_priv,
3273 /* GET_FB() is an unprivileged ioctl so we must not
3274 * return a buffer-handle to non-master processes! For
3275 * backwards-compatibility reasons, we cannot make
3276 * GET_FB() privileged, so just return an invalid handle
3277 * for non-masters. */
3285 drm_framebuffer_unreference(fb);
3291 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3292 * @dev: drm device for the ioctl
3293 * @data: data pointer for the ioctl
3294 * @file_priv: drm file for the ioctl call
3296 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3297 * rectangle list. Generic userspace which does frontbuffer rendering must call
3298 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3299 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3301 * Modesetting drivers which always update the frontbuffer do not need to
3302 * implement the corresponding ->dirty framebuffer callback.
3304 * Called by the user via ioctl.
3307 * Zero on success, negative errno on failure.
3309 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3310 void *data, struct drm_file *file_priv)
3312 struct drm_clip_rect __user *clips_ptr;
3313 struct drm_clip_rect *clips = NULL;
3314 struct drm_mode_fb_dirty_cmd *r = data;
3315 struct drm_framebuffer *fb;
3320 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3323 fb = drm_framebuffer_lookup(dev, r->fb_id);
3327 num_clips = r->num_clips;
3328 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3330 if (!num_clips != !clips_ptr) {
3335 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3337 /* If userspace annotates copy, clips must come in pairs */
3338 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3343 if (num_clips && clips_ptr) {
3344 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3348 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3354 ret = copy_from_user(clips, clips_ptr,
3355 num_clips * sizeof(*clips));
3362 if (fb->funcs->dirty) {
3363 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3372 drm_framebuffer_unreference(fb);
3379 * drm_fb_release - remove and free the FBs on this file
3380 * @priv: drm file for the ioctl
3382 * Destroy all the FBs associated with @filp.
3384 * Called by the user via ioctl.
3387 * Zero on success, negative errno on failure.
3389 void drm_fb_release(struct drm_file *priv)
3391 struct drm_device *dev = priv->minor->dev;
3392 struct drm_framebuffer *fb, *tfb;
3395 * When the file gets released that means no one else can access the fb
3396 * list any more, so no need to grab fpriv->fbs_lock. And we need to to
3397 * avoid upsetting lockdep since the universal cursor code adds a
3398 * framebuffer while holding mutex locks.
3400 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3401 * locks is impossible here since no one else but this function can get
3404 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3406 mutex_lock(&dev->mode_config.fb_lock);
3407 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3408 __drm_framebuffer_unregister(dev, fb);
3409 mutex_unlock(&dev->mode_config.fb_lock);
3411 list_del_init(&fb->filp_head);
3413 /* This will also drop the fpriv->fbs reference. */
3414 drm_framebuffer_remove(fb);
3419 * drm_property_create - create a new property type
3421 * @flags: flags specifying the property type
3422 * @name: name of the property
3423 * @num_values: number of pre-defined values
3425 * This creates a new generic drm property which can then be attached to a drm
3426 * object with drm_object_attach_property. The returned property object must be
3427 * freed with drm_property_destroy.
3429 * Note that the DRM core keeps a per-device list of properties and that, if
3430 * drm_mode_config_cleanup() is called, it will destroy all properties created
3434 * A pointer to the newly created property on success, NULL on failure.
3436 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3437 const char *name, int num_values)
3439 struct drm_property *property = NULL;
3442 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3446 property->dev = dev;
3449 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3450 if (!property->values)
3454 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3458 property->flags = flags;
3459 property->num_values = num_values;
3460 INIT_LIST_HEAD(&property->enum_list);
3463 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3464 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3467 list_add_tail(&property->head, &dev->mode_config.property_list);
3469 WARN_ON(!drm_property_type_valid(property));
3473 kfree(property->values);
3477 EXPORT_SYMBOL(drm_property_create);
3480 * drm_property_create_enum - create a new enumeration property type
3482 * @flags: flags specifying the property type
3483 * @name: name of the property
3484 * @props: enumeration lists with property values
3485 * @num_values: number of pre-defined values
3487 * This creates a new generic drm property which can then be attached to a drm
3488 * object with drm_object_attach_property. The returned property object must be
3489 * freed with drm_property_destroy.
3491 * Userspace is only allowed to set one of the predefined values for enumeration
3495 * A pointer to the newly created property on success, NULL on failure.
3497 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3499 const struct drm_prop_enum_list *props,
3502 struct drm_property *property;
3505 flags |= DRM_MODE_PROP_ENUM;
3507 property = drm_property_create(dev, flags, name, num_values);
3511 for (i = 0; i < num_values; i++) {
3512 ret = drm_property_add_enum(property, i,
3516 drm_property_destroy(dev, property);
3523 EXPORT_SYMBOL(drm_property_create_enum);
3526 * drm_property_create_bitmask - create a new bitmask property type
3528 * @flags: flags specifying the property type
3529 * @name: name of the property
3530 * @props: enumeration lists with property bitflags
3531 * @num_props: size of the @props array
3532 * @supported_bits: bitmask of all supported enumeration values
3534 * This creates a new bitmask drm property which can then be attached to a drm
3535 * object with drm_object_attach_property. The returned property object must be
3536 * freed with drm_property_destroy.
3538 * Compared to plain enumeration properties userspace is allowed to set any
3539 * or'ed together combination of the predefined property bitflag values
3542 * A pointer to the newly created property on success, NULL on failure.
3544 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3545 int flags, const char *name,
3546 const struct drm_prop_enum_list *props,
3548 uint64_t supported_bits)
3550 struct drm_property *property;
3551 int i, ret, index = 0;
3552 int num_values = hweight64(supported_bits);
3554 flags |= DRM_MODE_PROP_BITMASK;
3556 property = drm_property_create(dev, flags, name, num_values);
3559 for (i = 0; i < num_props; i++) {
3560 if (!(supported_bits & (1ULL << props[i].type)))
3563 if (WARN_ON(index >= num_values)) {
3564 drm_property_destroy(dev, property);
3568 ret = drm_property_add_enum(property, index++,
3572 drm_property_destroy(dev, property);
3579 EXPORT_SYMBOL(drm_property_create_bitmask);
3581 static struct drm_property *property_create_range(struct drm_device *dev,
3582 int flags, const char *name,
3583 uint64_t min, uint64_t max)
3585 struct drm_property *property;
3587 property = drm_property_create(dev, flags, name, 2);
3591 property->values[0] = min;
3592 property->values[1] = max;
3598 * drm_property_create_range - create a new ranged property type
3600 * @flags: flags specifying the property type
3601 * @name: name of the property
3602 * @min: minimum value of the property
3603 * @max: maximum value of the property
3605 * This creates a new generic drm property which can then be attached to a drm
3606 * object with drm_object_attach_property. The returned property object must be
3607 * freed with drm_property_destroy.
3609 * Userspace is allowed to set any integer value in the (min, max) range
3613 * A pointer to the newly created property on success, NULL on failure.
3615 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3617 uint64_t min, uint64_t max)
3619 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3622 EXPORT_SYMBOL(drm_property_create_range);
3624 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3625 int flags, const char *name,
3626 int64_t min, int64_t max)
3628 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3629 name, I642U64(min), I642U64(max));
3631 EXPORT_SYMBOL(drm_property_create_signed_range);
3633 struct drm_property *drm_property_create_object(struct drm_device *dev,
3634 int flags, const char *name, uint32_t type)
3636 struct drm_property *property;
3638 flags |= DRM_MODE_PROP_OBJECT;
3640 property = drm_property_create(dev, flags, name, 1);
3644 property->values[0] = type;
3648 EXPORT_SYMBOL(drm_property_create_object);
3651 * drm_property_add_enum - add a possible value to an enumeration property
3652 * @property: enumeration property to change
3653 * @index: index of the new enumeration
3654 * @value: value of the new enumeration
3655 * @name: symbolic name of the new enumeration
3657 * This functions adds enumerations to a property.
3659 * It's use is deprecated, drivers should use one of the more specific helpers
3660 * to directly create the property with all enumerations already attached.
3663 * Zero on success, error code on failure.
3665 int drm_property_add_enum(struct drm_property *property, int index,
3666 uint64_t value, const char *name)
3668 struct drm_property_enum *prop_enum;
3670 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3671 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3675 * Bitmask enum properties have the additional constraint of values
3678 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3682 if (!list_empty(&property->enum_list)) {
3683 list_for_each_entry(prop_enum, &property->enum_list, head) {
3684 if (prop_enum->value == value) {
3685 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3686 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3692 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3696 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3697 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3698 prop_enum->value = value;
3700 property->values[index] = value;
3701 list_add_tail(&prop_enum->head, &property->enum_list);
3704 EXPORT_SYMBOL(drm_property_add_enum);
3707 * drm_property_destroy - destroy a drm property
3709 * @property: property to destry
3711 * This function frees a property including any attached resources like
3712 * enumeration values.
3714 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3716 struct drm_property_enum *prop_enum, *pt;
3718 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3719 list_del(&prop_enum->head);
3723 if (property->num_values)
3724 kfree(property->values);
3725 drm_mode_object_put(dev, &property->base);
3726 list_del(&property->head);
3729 EXPORT_SYMBOL(drm_property_destroy);
3732 * drm_object_attach_property - attach a property to a modeset object
3733 * @obj: drm modeset object
3734 * @property: property to attach
3735 * @init_val: initial value of the property
3737 * This attaches the given property to the modeset object with the given initial
3738 * value. Currently this function cannot fail since the properties are stored in
3739 * a statically sized array.
3741 void drm_object_attach_property(struct drm_mode_object *obj,
3742 struct drm_property *property,
3745 int count = obj->properties->count;
3747 if (count == DRM_OBJECT_MAX_PROPERTY) {
3748 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3749 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3750 "you see this message on the same object type.\n",
3755 obj->properties->ids[count] = property->base.id;
3756 obj->properties->values[count] = init_val;
3757 obj->properties->count++;
3759 EXPORT_SYMBOL(drm_object_attach_property);
3762 * drm_object_property_set_value - set the value of a property
3763 * @obj: drm mode object to set property value for
3764 * @property: property to set
3765 * @val: value the property should be set to
3767 * This functions sets a given property on a given object. This function only
3768 * changes the software state of the property, it does not call into the
3769 * driver's ->set_property callback.
3772 * Zero on success, error code on failure.
3774 int drm_object_property_set_value(struct drm_mode_object *obj,
3775 struct drm_property *property, uint64_t val)
3779 for (i = 0; i < obj->properties->count; i++) {
3780 if (obj->properties->ids[i] == property->base.id) {
3781 obj->properties->values[i] = val;
3788 EXPORT_SYMBOL(drm_object_property_set_value);
3791 * drm_object_property_get_value - retrieve the value of a property
3792 * @obj: drm mode object to get property value from
3793 * @property: property to retrieve
3794 * @val: storage for the property value
3796 * This function retrieves the softare state of the given property for the given
3797 * property. Since there is no driver callback to retrieve the current property
3798 * value this might be out of sync with the hardware, depending upon the driver
3802 * Zero on success, error code on failure.
3804 int drm_object_property_get_value(struct drm_mode_object *obj,
3805 struct drm_property *property, uint64_t *val)
3809 for (i = 0; i < obj->properties->count; i++) {
3810 if (obj->properties->ids[i] == property->base.id) {
3811 *val = obj->properties->values[i];
3818 EXPORT_SYMBOL(drm_object_property_get_value);
3821 * drm_mode_getproperty_ioctl - get the property metadata
3824 * @file_priv: DRM file info
3826 * This function retrieves the metadata for a given property, like the different
3827 * possible values for an enum property or the limits for a range property.
3829 * Blob properties are special
3831 * Called by the user via ioctl.
3834 * Zero on success, negative errno on failure.
3836 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3837 void *data, struct drm_file *file_priv)
3839 struct drm_mode_get_property *out_resp = data;
3840 struct drm_property *property;
3842 int value_count = 0;
3845 struct drm_property_enum *prop_enum;
3846 struct drm_mode_property_enum __user *enum_ptr;
3847 uint64_t __user *values_ptr;
3849 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3852 drm_modeset_lock_all(dev);
3853 property = drm_property_find(dev, out_resp->prop_id);
3859 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3860 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3861 list_for_each_entry(prop_enum, &property->enum_list, head)
3865 value_count = property->num_values;
3867 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3868 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3869 out_resp->flags = property->flags;
3871 if ((out_resp->count_values >= value_count) && value_count) {
3872 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3873 for (i = 0; i < value_count; i++) {
3874 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3880 out_resp->count_values = value_count;
3882 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3883 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3884 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3886 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3887 list_for_each_entry(prop_enum, &property->enum_list, head) {
3889 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3894 if (copy_to_user(&enum_ptr[copied].name,
3895 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3902 out_resp->count_enum_blobs = enum_count;
3906 * NOTE: The idea seems to have been to use this to read all the blob
3907 * property values. But nothing ever added them to the corresponding
3908 * list, userspace always used the special-purpose get_blob ioctl to
3909 * read the value for a blob property. It also doesn't make a lot of
3910 * sense to return values here when everything else is just metadata for
3911 * the property itself.
3913 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
3914 out_resp->count_enum_blobs = 0;
3916 drm_modeset_unlock_all(dev);
3920 static struct drm_property_blob *
3921 drm_property_create_blob(struct drm_device *dev, size_t length,
3924 struct drm_property_blob *blob;
3927 if (!length || !data)
3930 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3934 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3940 blob->length = length;
3942 memcpy(blob->data, data, length);
3944 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3948 static void drm_property_destroy_blob(struct drm_device *dev,
3949 struct drm_property_blob *blob)
3951 drm_mode_object_put(dev, &blob->base);
3952 list_del(&blob->head);
3957 * drm_mode_getblob_ioctl - get the contents of a blob property value
3960 * @file_priv: DRM file info
3962 * This function retrieves the contents of a blob property. The value stored in
3963 * an object's blob property is just a normal modeset object id.
3965 * Called by the user via ioctl.
3968 * Zero on success, negative errno on failure.
3970 int drm_mode_getblob_ioctl(struct drm_device *dev,
3971 void *data, struct drm_file *file_priv)
3973 struct drm_mode_get_blob *out_resp = data;
3974 struct drm_property_blob *blob;
3976 void __user *blob_ptr;
3978 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3981 drm_modeset_lock_all(dev);
3982 blob = drm_property_blob_find(dev, out_resp->blob_id);
3988 if (out_resp->length == blob->length) {
3989 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3990 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3995 out_resp->length = blob->length;
3998 drm_modeset_unlock_all(dev);
4003 * drm_mode_connector_set_path_property - set tile property on connector
4004 * @connector: connector to set property on.
4005 * @path: path to use for property.
4007 * This creates a property to expose to userspace to specify a
4008 * connector path. This is mainly used for DisplayPort MST where
4009 * connectors have a topology and we want to allow userspace to give
4010 * them more meaningful names.
4013 * Zero on success, negative errno on failure.
4015 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4018 struct drm_device *dev = connector->dev;
4019 size_t size = strlen(path) + 1;
4022 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4024 if (!connector->path_blob_ptr)
4027 ret = drm_object_property_set_value(&connector->base,
4028 dev->mode_config.path_property,
4029 connector->path_blob_ptr->base.id);
4032 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4035 * drm_mode_connector_update_edid_property - update the edid property of a connector
4036 * @connector: drm connector
4037 * @edid: new value of the edid property
4039 * This function creates a new blob modeset object and assigns its id to the
4040 * connector's edid property.
4043 * Zero on success, negative errno on failure.
4045 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4046 const struct edid *edid)
4048 struct drm_device *dev = connector->dev;
4052 /* ignore requests to set edid when overridden */
4053 if (connector->override_edid)
4056 if (connector->edid_blob_ptr)
4057 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4059 /* Delete edid, when there is none. */
4061 connector->edid_blob_ptr = NULL;
4062 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4066 size = EDID_LENGTH * (1 + edid->extensions);
4067 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4069 if (!connector->edid_blob_ptr)
4072 ret = drm_object_property_set_value(&connector->base,
4073 dev->mode_config.edid_property,
4074 connector->edid_blob_ptr->base.id);
4078 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4080 static bool drm_property_change_is_valid(struct drm_property *property,
4083 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4086 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4087 if (value < property->values[0] || value > property->values[1])
4090 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4091 int64_t svalue = U642I64(value);
4092 if (svalue < U642I64(property->values[0]) ||
4093 svalue > U642I64(property->values[1]))
4096 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4098 uint64_t valid_mask = 0;
4099 for (i = 0; i < property->num_values; i++)
4100 valid_mask |= (1ULL << property->values[i]);
4101 return !(value & ~valid_mask);
4102 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4103 /* Only the driver knows */
4105 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4106 struct drm_mode_object *obj;
4107 /* a zero value for an object property translates to null: */
4111 * NOTE: use _object_find() directly to bypass restriction on
4112 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4113 * object this could race against object finalization, so it
4114 * simply tells us that the object *was* valid. Which is good
4117 obj = _object_find(property->dev, value, property->values[0]);
4121 for (i = 0; i < property->num_values; i++)
4122 if (property->values[i] == value)
4129 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4132 * @file_priv: DRM file info
4134 * This function sets the current value for a connectors's property. It also
4135 * calls into a driver's ->set_property callback to update the hardware state
4137 * Called by the user via ioctl.
4140 * Zero on success, negative errno on failure.
4142 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4143 void *data, struct drm_file *file_priv)
4145 struct drm_mode_connector_set_property *conn_set_prop = data;
4146 struct drm_mode_obj_set_property obj_set_prop = {
4147 .value = conn_set_prop->value,
4148 .prop_id = conn_set_prop->prop_id,
4149 .obj_id = conn_set_prop->connector_id,
4150 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4153 /* It does all the locking and checking we need */
4154 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4157 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4158 struct drm_property *property,
4162 struct drm_connector *connector = obj_to_connector(obj);
4164 /* Do DPMS ourselves */
4165 if (property == connector->dev->mode_config.dpms_property) {
4166 if (connector->funcs->dpms)
4167 (*connector->funcs->dpms)(connector, (int)value);
4169 } else if (connector->funcs->set_property)
4170 ret = connector->funcs->set_property(connector, property, value);
4172 /* store the property value if successful */
4174 drm_object_property_set_value(&connector->base, property, value);
4178 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4179 struct drm_property *property,
4183 struct drm_crtc *crtc = obj_to_crtc(obj);
4185 if (crtc->funcs->set_property)
4186 ret = crtc->funcs->set_property(crtc, property, value);
4188 drm_object_property_set_value(obj, property, value);
4194 * drm_mode_plane_set_obj_prop - set the value of a property
4195 * @plane: drm plane object to set property value for
4196 * @property: property to set
4197 * @value: value the property should be set to
4199 * This functions sets a given property on a given plane object. This function
4200 * calls the driver's ->set_property callback and changes the software state of
4201 * the property if the callback succeeds.
4204 * Zero on success, error code on failure.
4206 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4207 struct drm_property *property,
4211 struct drm_mode_object *obj = &plane->base;
4213 if (plane->funcs->set_property)
4214 ret = plane->funcs->set_property(plane, property, value);
4216 drm_object_property_set_value(obj, property, value);
4220 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4223 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4226 * @file_priv: DRM file info
4228 * This function retrieves the current value for an object's property. Compared
4229 * to the connector specific ioctl this one is extended to also work on crtc and
4232 * Called by the user via ioctl.
4235 * Zero on success, negative errno on failure.
4237 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4238 struct drm_file *file_priv)
4240 struct drm_mode_obj_get_properties *arg = data;
4241 struct drm_mode_object *obj;
4245 int props_count = 0;
4246 uint32_t __user *props_ptr;
4247 uint64_t __user *prop_values_ptr;
4249 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4252 drm_modeset_lock_all(dev);
4254 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4259 if (!obj->properties) {
4264 props_count = obj->properties->count;
4266 /* This ioctl is called twice, once to determine how much space is
4267 * needed, and the 2nd time to fill it. */
4268 if ((arg->count_props >= props_count) && props_count) {
4270 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
4271 prop_values_ptr = (uint64_t __user *)(unsigned long)
4272 (arg->prop_values_ptr);
4273 for (i = 0; i < props_count; i++) {
4274 if (put_user(obj->properties->ids[i],
4275 props_ptr + copied)) {
4279 if (put_user(obj->properties->values[i],
4280 prop_values_ptr + copied)) {
4287 arg->count_props = props_count;
4289 drm_modeset_unlock_all(dev);
4294 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4297 * @file_priv: DRM file info
4299 * This function sets the current value for an object's property. It also calls
4300 * into a driver's ->set_property callback to update the hardware state.
4301 * Compared to the connector specific ioctl this one is extended to also work on
4302 * crtc and plane objects.
4304 * Called by the user via ioctl.
4307 * Zero on success, negative errno on failure.
4309 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4310 struct drm_file *file_priv)
4312 struct drm_mode_obj_set_property *arg = data;
4313 struct drm_mode_object *arg_obj;
4314 struct drm_mode_object *prop_obj;
4315 struct drm_property *property;
4319 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4322 drm_modeset_lock_all(dev);
4324 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4329 if (!arg_obj->properties)
4332 for (i = 0; i < arg_obj->properties->count; i++)
4333 if (arg_obj->properties->ids[i] == arg->prop_id)
4336 if (i == arg_obj->properties->count)
4339 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4340 DRM_MODE_OBJECT_PROPERTY);
4345 property = obj_to_property(prop_obj);
4347 if (!drm_property_change_is_valid(property, arg->value))
4350 switch (arg_obj->type) {
4351 case DRM_MODE_OBJECT_CONNECTOR:
4352 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4355 case DRM_MODE_OBJECT_CRTC:
4356 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4358 case DRM_MODE_OBJECT_PLANE:
4359 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4360 property, arg->value);
4365 drm_modeset_unlock_all(dev);
4370 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4371 * @connector: connector to attach
4372 * @encoder: encoder to attach @connector to
4374 * This function links up a connector to an encoder. Note that the routing
4375 * restrictions between encoders and crtcs are exposed to userspace through the
4376 * possible_clones and possible_crtcs bitmasks.
4379 * Zero on success, negative errno on failure.
4381 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4382 struct drm_encoder *encoder)
4386 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4387 if (connector->encoder_ids[i] == 0) {
4388 connector->encoder_ids[i] = encoder->base.id;
4394 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4397 * drm_mode_crtc_set_gamma_size - set the gamma table size
4398 * @crtc: CRTC to set the gamma table size for
4399 * @gamma_size: size of the gamma table
4401 * Drivers which support gamma tables should set this to the supported gamma
4402 * table size when initializing the CRTC. Currently the drm core only supports a
4403 * fixed gamma table size.
4406 * Zero on success, negative errno on failure.
4408 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4411 crtc->gamma_size = gamma_size;
4413 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4414 if (!crtc->gamma_store) {
4415 crtc->gamma_size = 0;
4421 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4424 * drm_mode_gamma_set_ioctl - set the gamma table
4427 * @file_priv: DRM file info
4429 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4430 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4432 * Called by the user via ioctl.
4435 * Zero on success, negative errno on failure.
4437 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4438 void *data, struct drm_file *file_priv)
4440 struct drm_mode_crtc_lut *crtc_lut = data;
4441 struct drm_crtc *crtc;
4442 void *r_base, *g_base, *b_base;
4446 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4449 drm_modeset_lock_all(dev);
4450 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4456 if (crtc->funcs->gamma_set == NULL) {
4461 /* memcpy into gamma store */
4462 if (crtc_lut->gamma_size != crtc->gamma_size) {
4467 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4468 r_base = crtc->gamma_store;
4469 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4474 g_base = r_base + size;
4475 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4480 b_base = g_base + size;
4481 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4486 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4489 drm_modeset_unlock_all(dev);
4495 * drm_mode_gamma_get_ioctl - get the gamma table
4498 * @file_priv: DRM file info
4500 * Copy the current gamma table into the storage provided. This also provides
4501 * the gamma table size the driver expects, which can be used to size the
4502 * allocated storage.
4504 * Called by the user via ioctl.
4507 * Zero on success, negative errno on failure.
4509 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4510 void *data, struct drm_file *file_priv)
4512 struct drm_mode_crtc_lut *crtc_lut = data;
4513 struct drm_crtc *crtc;
4514 void *r_base, *g_base, *b_base;
4518 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4521 drm_modeset_lock_all(dev);
4522 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4528 /* memcpy into gamma store */
4529 if (crtc_lut->gamma_size != crtc->gamma_size) {
4534 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4535 r_base = crtc->gamma_store;
4536 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4541 g_base = r_base + size;
4542 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4547 b_base = g_base + size;
4548 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4553 drm_modeset_unlock_all(dev);
4558 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4561 * @file_priv: DRM file info
4563 * This schedules an asynchronous update on a given CRTC, called page flip.
4564 * Optionally a drm event is generated to signal the completion of the event.
4565 * Generic drivers cannot assume that a pageflip with changed framebuffer
4566 * properties (including driver specific metadata like tiling layout) will work,
4567 * but some drivers support e.g. pixel format changes through the pageflip
4570 * Called by the user via ioctl.
4573 * Zero on success, negative errno on failure.
4575 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4576 void *data, struct drm_file *file_priv)
4578 struct drm_mode_crtc_page_flip *page_flip = data;
4579 struct drm_crtc *crtc;
4580 struct drm_framebuffer *fb = NULL;
4581 struct drm_pending_vblank_event *e = NULL;
4582 unsigned long flags;
4585 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4586 page_flip->reserved != 0)
4589 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4592 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4596 drm_modeset_lock_crtc(crtc, crtc->primary);
4597 if (crtc->primary->fb == NULL) {
4598 /* The framebuffer is currently unbound, presumably
4599 * due to a hotplug event, that userspace has not
4606 if (crtc->funcs->page_flip == NULL)
4609 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4615 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4619 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4620 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4625 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4627 spin_lock_irqsave(&dev->event_lock, flags);
4628 if (file_priv->event_space < sizeof e->event) {
4629 spin_unlock_irqrestore(&dev->event_lock, flags);
4632 file_priv->event_space -= sizeof e->event;
4633 spin_unlock_irqrestore(&dev->event_lock, flags);
4635 e = kzalloc(sizeof *e, GFP_KERNEL);
4637 spin_lock_irqsave(&dev->event_lock, flags);
4638 file_priv->event_space += sizeof e->event;
4639 spin_unlock_irqrestore(&dev->event_lock, flags);
4643 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4644 e->event.base.length = sizeof e->event;
4645 e->event.user_data = page_flip->user_data;
4646 e->base.event = &e->event.base;
4647 e->base.file_priv = file_priv;
4649 (void (*) (struct drm_pending_event *)) kfree;
4652 crtc->primary->old_fb = crtc->primary->fb;
4653 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4655 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4656 spin_lock_irqsave(&dev->event_lock, flags);
4657 file_priv->event_space += sizeof e->event;
4658 spin_unlock_irqrestore(&dev->event_lock, flags);
4661 /* Keep the old fb, don't unref it. */
4662 crtc->primary->old_fb = NULL;
4665 * Warn if the driver hasn't properly updated the crtc->fb
4666 * field to reflect that the new framebuffer is now used.
4667 * Failing to do so will screw with the reference counting
4670 WARN_ON(crtc->primary->fb != fb);
4671 /* Unref only the old framebuffer. */
4677 drm_framebuffer_unreference(fb);
4678 if (crtc->primary->old_fb)
4679 drm_framebuffer_unreference(crtc->primary->old_fb);
4680 crtc->primary->old_fb = NULL;
4681 drm_modeset_unlock_crtc(crtc);
4687 * drm_mode_config_reset - call ->reset callbacks
4690 * This functions calls all the crtc's, encoder's and connector's ->reset
4691 * callback. Drivers can use this in e.g. their driver load or resume code to
4692 * reset hardware and software state.
4694 void drm_mode_config_reset(struct drm_device *dev)
4696 struct drm_crtc *crtc;
4697 struct drm_plane *plane;
4698 struct drm_encoder *encoder;
4699 struct drm_connector *connector;
4701 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4702 if (plane->funcs->reset)
4703 plane->funcs->reset(plane);
4705 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4706 if (crtc->funcs->reset)
4707 crtc->funcs->reset(crtc);
4709 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4710 if (encoder->funcs->reset)
4711 encoder->funcs->reset(encoder);
4713 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4714 connector->status = connector_status_unknown;
4716 if (connector->funcs->reset)
4717 connector->funcs->reset(connector);
4720 EXPORT_SYMBOL(drm_mode_config_reset);
4723 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4726 * @file_priv: DRM file info
4728 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4729 * TTM or something else entirely) and returns the resulting buffer handle. This
4730 * handle can then be wrapped up into a framebuffer modeset object.
4732 * Note that userspace is not allowed to use such objects for render
4733 * acceleration - drivers must create their own private ioctls for such a use
4736 * Called by the user via ioctl.
4739 * Zero on success, negative errno on failure.
4741 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4742 void *data, struct drm_file *file_priv)
4744 struct drm_mode_create_dumb *args = data;
4745 u32 cpp, stride, size;
4747 if (!dev->driver->dumb_create)
4749 if (!args->width || !args->height || !args->bpp)
4752 /* overflow checks for 32bit size calculations */
4753 /* NOTE: DIV_ROUND_UP() can overflow */
4754 cpp = DIV_ROUND_UP(args->bpp, 8);
4755 if (!cpp || cpp > 0xffffffffU / args->width)
4757 stride = cpp * args->width;
4758 if (args->height > 0xffffffffU / stride)
4761 /* test for wrap-around */
4762 size = args->height * stride;
4763 if (PAGE_ALIGN(size) == 0)
4767 * handle, pitch and size are output parameters. Zero them out to
4768 * prevent drivers from accidentally using uninitialized data. Since
4769 * not all existing userspace is clearing these fields properly we
4770 * cannot reject IOCTL with garbage in them.
4776 return dev->driver->dumb_create(file_priv, dev, args);
4780 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4783 * @file_priv: DRM file info
4785 * Allocate an offset in the drm device node's address space to be able to
4786 * memory map a dumb buffer.
4788 * Called by the user via ioctl.
4791 * Zero on success, negative errno on failure.
4793 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4794 void *data, struct drm_file *file_priv)
4796 struct drm_mode_map_dumb *args = data;
4798 /* call driver ioctl to get mmap offset */
4799 if (!dev->driver->dumb_map_offset)
4802 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4806 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4809 * @file_priv: DRM file info
4811 * This destroys the userspace handle for the given dumb backing storage buffer.
4812 * Since buffer objects must be reference counted in the kernel a buffer object
4813 * won't be immediately freed if a framebuffer modeset object still uses it.
4815 * Called by the user via ioctl.
4818 * Zero on success, negative errno on failure.
4820 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4821 void *data, struct drm_file *file_priv)
4823 struct drm_mode_destroy_dumb *args = data;
4825 if (!dev->driver->dumb_destroy)
4828 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4832 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4833 * @format: pixel format (DRM_FORMAT_*)
4834 * @depth: storage for the depth value
4835 * @bpp: storage for the bpp value
4837 * This only supports RGB formats here for compat with code that doesn't use
4838 * pixel formats directly yet.
4840 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4845 case DRM_FORMAT_RGB332:
4846 case DRM_FORMAT_BGR233:
4850 case DRM_FORMAT_XRGB1555:
4851 case DRM_FORMAT_XBGR1555:
4852 case DRM_FORMAT_RGBX5551:
4853 case DRM_FORMAT_BGRX5551:
4854 case DRM_FORMAT_ARGB1555:
4855 case DRM_FORMAT_ABGR1555:
4856 case DRM_FORMAT_RGBA5551:
4857 case DRM_FORMAT_BGRA5551:
4861 case DRM_FORMAT_RGB565:
4862 case DRM_FORMAT_BGR565:
4866 case DRM_FORMAT_RGB888:
4867 case DRM_FORMAT_BGR888:
4871 case DRM_FORMAT_XRGB8888:
4872 case DRM_FORMAT_XBGR8888:
4873 case DRM_FORMAT_RGBX8888:
4874 case DRM_FORMAT_BGRX8888:
4878 case DRM_FORMAT_XRGB2101010:
4879 case DRM_FORMAT_XBGR2101010:
4880 case DRM_FORMAT_RGBX1010102:
4881 case DRM_FORMAT_BGRX1010102:
4882 case DRM_FORMAT_ARGB2101010:
4883 case DRM_FORMAT_ABGR2101010:
4884 case DRM_FORMAT_RGBA1010102:
4885 case DRM_FORMAT_BGRA1010102:
4889 case DRM_FORMAT_ARGB8888:
4890 case DRM_FORMAT_ABGR8888:
4891 case DRM_FORMAT_RGBA8888:
4892 case DRM_FORMAT_BGRA8888:
4897 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4898 drm_get_format_name(format));
4904 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4907 * drm_format_num_planes - get the number of planes for format
4908 * @format: pixel format (DRM_FORMAT_*)
4911 * The number of planes used by the specified pixel format.
4913 int drm_format_num_planes(uint32_t format)
4916 case DRM_FORMAT_YUV410:
4917 case DRM_FORMAT_YVU410:
4918 case DRM_FORMAT_YUV411:
4919 case DRM_FORMAT_YVU411:
4920 case DRM_FORMAT_YUV420:
4921 case DRM_FORMAT_YVU420:
4922 case DRM_FORMAT_YUV422:
4923 case DRM_FORMAT_YVU422:
4924 case DRM_FORMAT_YUV444:
4925 case DRM_FORMAT_YVU444:
4927 case DRM_FORMAT_NV12:
4928 case DRM_FORMAT_NV21:
4929 case DRM_FORMAT_NV16:
4930 case DRM_FORMAT_NV61:
4931 case DRM_FORMAT_NV24:
4932 case DRM_FORMAT_NV42:
4938 EXPORT_SYMBOL(drm_format_num_planes);
4941 * drm_format_plane_cpp - determine the bytes per pixel value
4942 * @format: pixel format (DRM_FORMAT_*)
4943 * @plane: plane index
4946 * The bytes per pixel value for the specified plane.
4948 int drm_format_plane_cpp(uint32_t format, int plane)
4953 if (plane >= drm_format_num_planes(format))
4957 case DRM_FORMAT_YUYV:
4958 case DRM_FORMAT_YVYU:
4959 case DRM_FORMAT_UYVY:
4960 case DRM_FORMAT_VYUY:
4962 case DRM_FORMAT_NV12:
4963 case DRM_FORMAT_NV21:
4964 case DRM_FORMAT_NV16:
4965 case DRM_FORMAT_NV61:
4966 case DRM_FORMAT_NV24:
4967 case DRM_FORMAT_NV42:
4968 return plane ? 2 : 1;
4969 case DRM_FORMAT_YUV410:
4970 case DRM_FORMAT_YVU410:
4971 case DRM_FORMAT_YUV411:
4972 case DRM_FORMAT_YVU411:
4973 case DRM_FORMAT_YUV420:
4974 case DRM_FORMAT_YVU420:
4975 case DRM_FORMAT_YUV422:
4976 case DRM_FORMAT_YVU422:
4977 case DRM_FORMAT_YUV444:
4978 case DRM_FORMAT_YVU444:
4981 drm_fb_get_bpp_depth(format, &depth, &bpp);
4985 EXPORT_SYMBOL(drm_format_plane_cpp);
4988 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4989 * @format: pixel format (DRM_FORMAT_*)
4992 * The horizontal chroma subsampling factor for the
4993 * specified pixel format.
4995 int drm_format_horz_chroma_subsampling(uint32_t format)
4998 case DRM_FORMAT_YUV411:
4999 case DRM_FORMAT_YVU411:
5000 case DRM_FORMAT_YUV410:
5001 case DRM_FORMAT_YVU410:
5003 case DRM_FORMAT_YUYV:
5004 case DRM_FORMAT_YVYU:
5005 case DRM_FORMAT_UYVY:
5006 case DRM_FORMAT_VYUY:
5007 case DRM_FORMAT_NV12:
5008 case DRM_FORMAT_NV21:
5009 case DRM_FORMAT_NV16:
5010 case DRM_FORMAT_NV61:
5011 case DRM_FORMAT_YUV422:
5012 case DRM_FORMAT_YVU422:
5013 case DRM_FORMAT_YUV420:
5014 case DRM_FORMAT_YVU420:
5020 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5023 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5024 * @format: pixel format (DRM_FORMAT_*)
5027 * The vertical chroma subsampling factor for the
5028 * specified pixel format.
5030 int drm_format_vert_chroma_subsampling(uint32_t format)
5033 case DRM_FORMAT_YUV410:
5034 case DRM_FORMAT_YVU410:
5036 case DRM_FORMAT_YUV420:
5037 case DRM_FORMAT_YVU420:
5038 case DRM_FORMAT_NV12:
5039 case DRM_FORMAT_NV21:
5045 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5048 * drm_rotation_simplify() - Try to simplify the rotation
5049 * @rotation: Rotation to be simplified
5050 * @supported_rotations: Supported rotations
5052 * Attempt to simplify the rotation to a form that is supported.
5053 * Eg. if the hardware supports everything except DRM_REFLECT_X
5054 * one could call this function like this:
5056 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5057 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5058 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5060 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5061 * transforms the hardware supports, this function may not
5062 * be able to produce a supported transform, so the caller should
5063 * check the result afterwards.
5065 unsigned int drm_rotation_simplify(unsigned int rotation,
5066 unsigned int supported_rotations)
5068 if (rotation & ~supported_rotations) {
5069 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5070 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5075 EXPORT_SYMBOL(drm_rotation_simplify);
5078 * drm_mode_config_init - initialize DRM mode_configuration structure
5081 * Initialize @dev's mode_config structure, used for tracking the graphics
5082 * configuration of @dev.
5084 * Since this initializes the modeset locks, no locking is possible. Which is no
5085 * problem, since this should happen single threaded at init time. It is the
5086 * driver's problem to ensure this guarantee.
5089 void drm_mode_config_init(struct drm_device *dev)
5091 mutex_init(&dev->mode_config.mutex);
5092 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5093 mutex_init(&dev->mode_config.idr_mutex);
5094 mutex_init(&dev->mode_config.fb_lock);
5095 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5096 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5097 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5098 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
5099 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5100 INIT_LIST_HEAD(&dev->mode_config.property_list);
5101 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5102 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5103 idr_init(&dev->mode_config.crtc_idr);
5105 drm_modeset_lock_all(dev);
5106 drm_mode_create_standard_connector_properties(dev);
5107 drm_mode_create_standard_plane_properties(dev);
5108 drm_modeset_unlock_all(dev);
5110 /* Just to be sure */
5111 dev->mode_config.num_fb = 0;
5112 dev->mode_config.num_connector = 0;
5113 dev->mode_config.num_crtc = 0;
5114 dev->mode_config.num_encoder = 0;
5115 dev->mode_config.num_overlay_plane = 0;
5116 dev->mode_config.num_total_plane = 0;
5118 EXPORT_SYMBOL(drm_mode_config_init);
5121 * drm_mode_config_cleanup - free up DRM mode_config info
5124 * Free up all the connectors and CRTCs associated with this DRM device, then
5125 * free up the framebuffers and associated buffer objects.
5127 * Note that since this /should/ happen single-threaded at driver/device
5128 * teardown time, no locking is required. It's the driver's job to ensure that
5129 * this guarantee actually holds true.
5131 * FIXME: cleanup any dangling user buffer objects too
5133 void drm_mode_config_cleanup(struct drm_device *dev)
5135 struct drm_connector *connector, *ot;
5136 struct drm_crtc *crtc, *ct;
5137 struct drm_encoder *encoder, *enct;
5138 struct drm_bridge *bridge, *brt;
5139 struct drm_framebuffer *fb, *fbt;
5140 struct drm_property *property, *pt;
5141 struct drm_property_blob *blob, *bt;
5142 struct drm_plane *plane, *plt;
5144 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5146 encoder->funcs->destroy(encoder);
5149 list_for_each_entry_safe(bridge, brt,
5150 &dev->mode_config.bridge_list, head) {
5151 bridge->funcs->destroy(bridge);
5154 list_for_each_entry_safe(connector, ot,
5155 &dev->mode_config.connector_list, head) {
5156 connector->funcs->destroy(connector);
5159 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5161 drm_property_destroy(dev, property);
5164 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5166 drm_property_destroy_blob(dev, blob);
5170 * Single-threaded teardown context, so it's not required to grab the
5171 * fb_lock to protect against concurrent fb_list access. Contrary, it
5172 * would actually deadlock with the drm_framebuffer_cleanup function.
5174 * Also, if there are any framebuffers left, that's a driver leak now,
5175 * so politely WARN about this.
5177 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5178 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5179 drm_framebuffer_remove(fb);
5182 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5184 plane->funcs->destroy(plane);
5187 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5188 crtc->funcs->destroy(crtc);
5191 idr_destroy(&dev->mode_config.crtc_idr);
5192 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5194 EXPORT_SYMBOL(drm_mode_config_cleanup);
5196 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5197 unsigned int supported_rotations)
5199 static const struct drm_prop_enum_list props[] = {
5200 { DRM_ROTATE_0, "rotate-0" },
5201 { DRM_ROTATE_90, "rotate-90" },
5202 { DRM_ROTATE_180, "rotate-180" },
5203 { DRM_ROTATE_270, "rotate-270" },
5204 { DRM_REFLECT_X, "reflect-x" },
5205 { DRM_REFLECT_Y, "reflect-y" },
5208 return drm_property_create_bitmask(dev, 0, "rotation",
5209 props, ARRAY_SIZE(props),
5210 supported_rotations);
5212 EXPORT_SYMBOL(drm_mode_create_rotation_property);