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);
704 EXPORT_SYMBOL(drm_crtc_init_with_planes);
707 * drm_crtc_cleanup - Clean up the core crtc usage
708 * @crtc: CRTC to cleanup
710 * This function cleans up @crtc and removes it from the DRM mode setting
711 * core. Note that the function does *not* free the crtc structure itself,
712 * this is the responsibility of the caller.
714 void drm_crtc_cleanup(struct drm_crtc *crtc)
716 struct drm_device *dev = crtc->dev;
718 kfree(crtc->gamma_store);
719 crtc->gamma_store = NULL;
721 drm_modeset_lock_fini(&crtc->mutex);
723 drm_mode_object_put(dev, &crtc->base);
724 list_del(&crtc->head);
725 dev->mode_config.num_crtc--;
727 EXPORT_SYMBOL(drm_crtc_cleanup);
730 * drm_crtc_index - find the index of a registered CRTC
731 * @crtc: CRTC to find index for
733 * Given a registered CRTC, return the index of that CRTC within a DRM
734 * device's list of CRTCs.
736 unsigned int drm_crtc_index(struct drm_crtc *crtc)
738 unsigned int index = 0;
739 struct drm_crtc *tmp;
741 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
750 EXPORT_SYMBOL(drm_crtc_index);
753 * drm_mode_remove - remove and free a mode
754 * @connector: connector list to modify
755 * @mode: mode to remove
757 * Remove @mode from @connector's mode list, then free it.
759 static void drm_mode_remove(struct drm_connector *connector,
760 struct drm_display_mode *mode)
762 list_del(&mode->head);
763 drm_mode_destroy(connector->dev, mode);
767 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
768 * @connector: connector to quwery
770 * The kernel supports per-connector configration of its consoles through
771 * use of the video= parameter. This function parses that option and
772 * extracts the user's specified mode (or enable/disable status) for a
773 * particular connector. This is typically only used during the early fbdev
776 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
778 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
781 if (fb_get_options(connector->name, &option))
784 if (!drm_mode_parse_command_line_for_connector(option,
792 switch (mode->force) {
796 case DRM_FORCE_ON_DIGITAL:
805 DRM_INFO("forcing %s connector %s\n", connector->name, s);
806 connector->force = mode->force;
809 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
811 mode->xres, mode->yres,
812 mode->refresh_specified ? mode->refresh : 60,
813 mode->rb ? " reduced blanking" : "",
814 mode->margins ? " with margins" : "",
815 mode->interlace ? " interlaced" : "");
819 * drm_connector_init - Init a preallocated connector
821 * @connector: the connector to init
822 * @funcs: callbacks for this connector
823 * @connector_type: user visible type of the connector
825 * Initialises a preallocated connector. Connectors should be
826 * subclassed as part of driver connector objects.
829 * Zero on success, error code on failure.
831 int drm_connector_init(struct drm_device *dev,
832 struct drm_connector *connector,
833 const struct drm_connector_funcs *funcs,
837 struct ida *connector_ida =
838 &drm_connector_enum_list[connector_type].ida;
840 drm_modeset_lock_all(dev);
842 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
846 connector->base.properties = &connector->properties;
847 connector->dev = dev;
848 connector->funcs = funcs;
849 connector->connector_type = connector_type;
850 connector->connector_type_id =
851 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
852 if (connector->connector_type_id < 0) {
853 ret = connector->connector_type_id;
857 kasprintf(GFP_KERNEL, "%s-%d",
858 drm_connector_enum_list[connector_type].name,
859 connector->connector_type_id);
860 if (!connector->name) {
865 INIT_LIST_HEAD(&connector->probed_modes);
866 INIT_LIST_HEAD(&connector->modes);
867 connector->edid_blob_ptr = NULL;
868 connector->status = connector_status_unknown;
870 drm_connector_get_cmdline_mode(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;
936 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
937 if (tmp == connector)
945 EXPORT_SYMBOL(drm_connector_index);
948 * drm_connector_register - register a connector
949 * @connector: the connector to register
951 * Register userspace interfaces for a connector
954 * Zero on success, error code on failure.
956 int drm_connector_register(struct drm_connector *connector)
960 drm_mode_object_register(connector->dev, &connector->base);
962 ret = drm_sysfs_connector_add(connector);
966 ret = drm_debugfs_connector_add(connector);
968 drm_sysfs_connector_remove(connector);
974 EXPORT_SYMBOL(drm_connector_register);
977 * drm_connector_unregister - unregister a connector
978 * @connector: the connector to unregister
980 * Unregister userspace interfaces for a connector
982 void drm_connector_unregister(struct drm_connector *connector)
984 drm_sysfs_connector_remove(connector);
985 drm_debugfs_connector_remove(connector);
987 EXPORT_SYMBOL(drm_connector_unregister);
991 * drm_connector_unplug_all - unregister connector userspace interfaces
994 * This function unregisters all connector userspace interfaces in sysfs. Should
995 * be call when the device is disconnected, e.g. from an usb driver's
996 * ->disconnect callback.
998 void drm_connector_unplug_all(struct drm_device *dev)
1000 struct drm_connector *connector;
1002 /* taking the mode config mutex ends up in a clash with sysfs */
1003 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1004 drm_connector_unregister(connector);
1007 EXPORT_SYMBOL(drm_connector_unplug_all);
1010 * drm_bridge_init - initialize a drm transcoder/bridge
1012 * @bridge: transcoder/bridge to set up
1013 * @funcs: bridge function table
1015 * Initialises a preallocated bridge. Bridges should be
1016 * subclassed as part of driver connector objects.
1019 * Zero on success, error code on failure.
1021 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1022 const struct drm_bridge_funcs *funcs)
1026 drm_modeset_lock_all(dev);
1028 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1033 bridge->funcs = funcs;
1035 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1036 dev->mode_config.num_bridge++;
1039 drm_modeset_unlock_all(dev);
1042 EXPORT_SYMBOL(drm_bridge_init);
1045 * drm_bridge_cleanup - cleans up an initialised bridge
1046 * @bridge: bridge to cleanup
1048 * Cleans up the bridge but doesn't free the object.
1050 void drm_bridge_cleanup(struct drm_bridge *bridge)
1052 struct drm_device *dev = bridge->dev;
1054 drm_modeset_lock_all(dev);
1055 drm_mode_object_put(dev, &bridge->base);
1056 list_del(&bridge->head);
1057 dev->mode_config.num_bridge--;
1058 drm_modeset_unlock_all(dev);
1060 EXPORT_SYMBOL(drm_bridge_cleanup);
1063 * drm_encoder_init - Init a preallocated encoder
1065 * @encoder: the encoder to init
1066 * @funcs: callbacks for this encoder
1067 * @encoder_type: user visible type of the encoder
1069 * Initialises a preallocated encoder. Encoder should be
1070 * subclassed as part of driver encoder objects.
1073 * Zero on success, error code on failure.
1075 int drm_encoder_init(struct drm_device *dev,
1076 struct drm_encoder *encoder,
1077 const struct drm_encoder_funcs *funcs,
1082 drm_modeset_lock_all(dev);
1084 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1089 encoder->encoder_type = encoder_type;
1090 encoder->funcs = funcs;
1091 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1092 drm_encoder_enum_list[encoder_type].name,
1094 if (!encoder->name) {
1099 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1100 dev->mode_config.num_encoder++;
1104 drm_mode_object_put(dev, &encoder->base);
1107 drm_modeset_unlock_all(dev);
1111 EXPORT_SYMBOL(drm_encoder_init);
1114 * drm_encoder_cleanup - cleans up an initialised encoder
1115 * @encoder: encoder to cleanup
1117 * Cleans up the encoder but doesn't free the object.
1119 void drm_encoder_cleanup(struct drm_encoder *encoder)
1121 struct drm_device *dev = encoder->dev;
1122 drm_modeset_lock_all(dev);
1123 drm_mode_object_put(dev, &encoder->base);
1124 kfree(encoder->name);
1125 encoder->name = NULL;
1126 list_del(&encoder->head);
1127 dev->mode_config.num_encoder--;
1128 drm_modeset_unlock_all(dev);
1130 EXPORT_SYMBOL(drm_encoder_cleanup);
1133 * drm_universal_plane_init - Initialize a new universal plane object
1135 * @plane: plane object to init
1136 * @possible_crtcs: bitmask of possible CRTCs
1137 * @funcs: callbacks for the new plane
1138 * @formats: array of supported formats (%DRM_FORMAT_*)
1139 * @format_count: number of elements in @formats
1140 * @type: type of plane (overlay, primary, cursor)
1142 * Initializes a plane object of type @type.
1145 * Zero on success, error code on failure.
1147 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1148 unsigned long possible_crtcs,
1149 const struct drm_plane_funcs *funcs,
1150 const uint32_t *formats, uint32_t format_count,
1151 enum drm_plane_type type)
1155 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1159 drm_modeset_lock_init(&plane->mutex);
1161 plane->base.properties = &plane->properties;
1163 plane->funcs = funcs;
1164 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1166 if (!plane->format_types) {
1167 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1168 drm_mode_object_put(dev, &plane->base);
1173 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1174 plane->format_count = format_count;
1175 plane->possible_crtcs = possible_crtcs;
1178 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1179 dev->mode_config.num_total_plane++;
1180 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1181 dev->mode_config.num_overlay_plane++;
1183 drm_object_attach_property(&plane->base,
1184 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, 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);
1537 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1539 uint32_t total_objects = 0;
1541 total_objects += dev->mode_config.num_crtc;
1542 total_objects += dev->mode_config.num_connector;
1543 total_objects += dev->mode_config.num_encoder;
1544 total_objects += dev->mode_config.num_bridge;
1546 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1547 if (!group->id_list)
1550 group->num_crtcs = 0;
1551 group->num_connectors = 0;
1552 group->num_encoders = 0;
1553 group->num_bridges = 0;
1557 void drm_mode_group_destroy(struct drm_mode_group *group)
1559 kfree(group->id_list);
1560 group->id_list = NULL;
1564 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1565 * the drm core's responsibility to set up mode control groups.
1567 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1568 struct drm_mode_group *group)
1570 struct drm_crtc *crtc;
1571 struct drm_encoder *encoder;
1572 struct drm_connector *connector;
1573 struct drm_bridge *bridge;
1576 if ((ret = drm_mode_group_init(dev, group)))
1579 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1580 group->id_list[group->num_crtcs++] = crtc->base.id;
1582 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1583 group->id_list[group->num_crtcs + group->num_encoders++] =
1586 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1587 group->id_list[group->num_crtcs + group->num_encoders +
1588 group->num_connectors++] = connector->base.id;
1590 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1591 group->id_list[group->num_crtcs + group->num_encoders +
1592 group->num_connectors + group->num_bridges++] =
1597 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1599 void drm_reinit_primary_mode_group(struct drm_device *dev)
1601 drm_modeset_lock_all(dev);
1602 drm_mode_group_destroy(&dev->primary->mode_group);
1603 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1604 drm_modeset_unlock_all(dev);
1606 EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1609 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1610 * @out: drm_mode_modeinfo struct to return to the user
1611 * @in: drm_display_mode to use
1613 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1616 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1617 const struct drm_display_mode *in)
1619 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1620 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1621 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1622 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1623 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1624 "timing values too large for mode info\n");
1626 out->clock = in->clock;
1627 out->hdisplay = in->hdisplay;
1628 out->hsync_start = in->hsync_start;
1629 out->hsync_end = in->hsync_end;
1630 out->htotal = in->htotal;
1631 out->hskew = in->hskew;
1632 out->vdisplay = in->vdisplay;
1633 out->vsync_start = in->vsync_start;
1634 out->vsync_end = in->vsync_end;
1635 out->vtotal = in->vtotal;
1636 out->vscan = in->vscan;
1637 out->vrefresh = in->vrefresh;
1638 out->flags = in->flags;
1639 out->type = in->type;
1640 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1641 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1645 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1646 * @out: drm_display_mode to return to the user
1647 * @in: drm_mode_modeinfo to use
1649 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1653 * Zero on success, errno on failure.
1655 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1656 const struct drm_mode_modeinfo *in)
1658 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1661 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1664 out->clock = in->clock;
1665 out->hdisplay = in->hdisplay;
1666 out->hsync_start = in->hsync_start;
1667 out->hsync_end = in->hsync_end;
1668 out->htotal = in->htotal;
1669 out->hskew = in->hskew;
1670 out->vdisplay = in->vdisplay;
1671 out->vsync_start = in->vsync_start;
1672 out->vsync_end = in->vsync_end;
1673 out->vtotal = in->vtotal;
1674 out->vscan = in->vscan;
1675 out->vrefresh = in->vrefresh;
1676 out->flags = in->flags;
1677 out->type = in->type;
1678 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1679 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1685 * drm_mode_getresources - get graphics configuration
1686 * @dev: drm device for the ioctl
1687 * @data: data pointer for the ioctl
1688 * @file_priv: drm file for the ioctl call
1690 * Construct a set of configuration description structures and return
1691 * them to the user, including CRTC, connector and framebuffer configuration.
1693 * Called by the user via ioctl.
1696 * Zero on success, errno on failure.
1698 int drm_mode_getresources(struct drm_device *dev, void *data,
1699 struct drm_file *file_priv)
1701 struct drm_mode_card_res *card_res = data;
1702 struct list_head *lh;
1703 struct drm_framebuffer *fb;
1704 struct drm_connector *connector;
1705 struct drm_crtc *crtc;
1706 struct drm_encoder *encoder;
1708 int connector_count = 0;
1711 int encoder_count = 0;
1713 uint32_t __user *fb_id;
1714 uint32_t __user *crtc_id;
1715 uint32_t __user *connector_id;
1716 uint32_t __user *encoder_id;
1717 struct drm_mode_group *mode_group;
1719 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1723 mutex_lock(&file_priv->fbs_lock);
1725 * For the non-control nodes we need to limit the list of resources
1726 * by IDs in the group list for this node
1728 list_for_each(lh, &file_priv->fbs)
1731 /* handle this in 4 parts */
1733 if (card_res->count_fbs >= fb_count) {
1735 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1736 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1737 if (put_user(fb->base.id, fb_id + copied)) {
1738 mutex_unlock(&file_priv->fbs_lock);
1744 card_res->count_fbs = fb_count;
1745 mutex_unlock(&file_priv->fbs_lock);
1747 /* mode_config.mutex protects the connector list against e.g. DP MST
1748 * connector hot-adding. CRTC/Plane lists are invariant. */
1749 mutex_lock(&dev->mode_config.mutex);
1750 if (!drm_is_primary_client(file_priv)) {
1753 list_for_each(lh, &dev->mode_config.crtc_list)
1756 list_for_each(lh, &dev->mode_config.connector_list)
1759 list_for_each(lh, &dev->mode_config.encoder_list)
1763 mode_group = &file_priv->master->minor->mode_group;
1764 crtc_count = mode_group->num_crtcs;
1765 connector_count = mode_group->num_connectors;
1766 encoder_count = mode_group->num_encoders;
1769 card_res->max_height = dev->mode_config.max_height;
1770 card_res->min_height = dev->mode_config.min_height;
1771 card_res->max_width = dev->mode_config.max_width;
1772 card_res->min_width = dev->mode_config.min_width;
1775 if (card_res->count_crtcs >= crtc_count) {
1777 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1779 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1781 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1782 if (put_user(crtc->base.id, crtc_id + copied)) {
1789 for (i = 0; i < mode_group->num_crtcs; i++) {
1790 if (put_user(mode_group->id_list[i],
1791 crtc_id + copied)) {
1799 card_res->count_crtcs = crtc_count;
1802 if (card_res->count_encoders >= encoder_count) {
1804 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1806 list_for_each_entry(encoder,
1807 &dev->mode_config.encoder_list,
1809 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1811 if (put_user(encoder->base.id, encoder_id +
1819 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1820 if (put_user(mode_group->id_list[i],
1821 encoder_id + copied)) {
1830 card_res->count_encoders = encoder_count;
1833 if (card_res->count_connectors >= connector_count) {
1835 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1837 list_for_each_entry(connector,
1838 &dev->mode_config.connector_list,
1840 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1843 if (put_user(connector->base.id,
1844 connector_id + copied)) {
1851 int start = mode_group->num_crtcs +
1852 mode_group->num_encoders;
1853 for (i = start; i < start + mode_group->num_connectors; i++) {
1854 if (put_user(mode_group->id_list[i],
1855 connector_id + copied)) {
1863 card_res->count_connectors = connector_count;
1865 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1866 card_res->count_connectors, card_res->count_encoders);
1869 mutex_unlock(&dev->mode_config.mutex);
1874 * drm_mode_getcrtc - get CRTC configuration
1875 * @dev: drm device for the ioctl
1876 * @data: data pointer for the ioctl
1877 * @file_priv: drm file for the ioctl call
1879 * Construct a CRTC configuration structure to return to the user.
1881 * Called by the user via ioctl.
1884 * Zero on success, errno on failure.
1886 int drm_mode_getcrtc(struct drm_device *dev,
1887 void *data, struct drm_file *file_priv)
1889 struct drm_mode_crtc *crtc_resp = data;
1890 struct drm_crtc *crtc;
1893 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1896 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1900 drm_modeset_lock_crtc(crtc, crtc->primary);
1901 crtc_resp->x = crtc->x;
1902 crtc_resp->y = crtc->y;
1903 crtc_resp->gamma_size = crtc->gamma_size;
1904 if (crtc->primary->fb)
1905 crtc_resp->fb_id = crtc->primary->fb->base.id;
1907 crtc_resp->fb_id = 0;
1909 if (crtc->enabled) {
1911 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1912 crtc_resp->mode_valid = 1;
1915 crtc_resp->mode_valid = 0;
1917 drm_modeset_unlock_crtc(crtc);
1922 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1923 const struct drm_file *file_priv)
1926 * If user-space hasn't configured the driver to expose the stereo 3D
1927 * modes, don't expose them.
1929 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1936 * drm_mode_getconnector - get connector configuration
1937 * @dev: drm device for the ioctl
1938 * @data: data pointer for the ioctl
1939 * @file_priv: drm file for the ioctl call
1941 * Construct a connector configuration structure to return to the user.
1943 * Called by the user via ioctl.
1946 * Zero on success, errno on failure.
1948 int drm_mode_getconnector(struct drm_device *dev, void *data,
1949 struct drm_file *file_priv)
1951 struct drm_mode_get_connector *out_resp = data;
1952 struct drm_connector *connector;
1953 struct drm_display_mode *mode;
1955 int props_count = 0;
1956 int encoders_count = 0;
1960 struct drm_mode_modeinfo u_mode;
1961 struct drm_mode_modeinfo __user *mode_ptr;
1962 uint32_t __user *prop_ptr;
1963 uint64_t __user *prop_values;
1964 uint32_t __user *encoder_ptr;
1966 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1969 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1971 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1973 mutex_lock(&dev->mode_config.mutex);
1975 connector = drm_connector_find(dev, out_resp->connector_id);
1981 props_count = connector->properties.count;
1983 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1984 if (connector->encoder_ids[i] != 0) {
1989 if (out_resp->count_modes == 0) {
1990 connector->funcs->fill_modes(connector,
1991 dev->mode_config.max_width,
1992 dev->mode_config.max_height);
1995 /* delayed so we get modes regardless of pre-fill_modes state */
1996 list_for_each_entry(mode, &connector->modes, head)
1997 if (drm_mode_expose_to_userspace(mode, file_priv))
2000 out_resp->connector_id = connector->base.id;
2001 out_resp->connector_type = connector->connector_type;
2002 out_resp->connector_type_id = connector->connector_type_id;
2003 out_resp->mm_width = connector->display_info.width_mm;
2004 out_resp->mm_height = connector->display_info.height_mm;
2005 out_resp->subpixel = connector->display_info.subpixel_order;
2006 out_resp->connection = connector->status;
2007 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2008 if (connector->encoder)
2009 out_resp->encoder_id = connector->encoder->base.id;
2011 out_resp->encoder_id = 0;
2012 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2015 * This ioctl is called twice, once to determine how much space is
2016 * needed, and the 2nd time to fill it.
2018 if ((out_resp->count_modes >= mode_count) && mode_count) {
2020 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2021 list_for_each_entry(mode, &connector->modes, head) {
2022 if (!drm_mode_expose_to_userspace(mode, file_priv))
2025 drm_crtc_convert_to_umode(&u_mode, mode);
2026 if (copy_to_user(mode_ptr + copied,
2027 &u_mode, sizeof(u_mode))) {
2034 out_resp->count_modes = mode_count;
2036 if ((out_resp->count_props >= props_count) && props_count) {
2038 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
2039 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
2040 for (i = 0; i < connector->properties.count; i++) {
2041 if (put_user(connector->properties.ids[i],
2042 prop_ptr + copied)) {
2047 if (put_user(connector->properties.values[i],
2048 prop_values + copied)) {
2055 out_resp->count_props = props_count;
2057 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2059 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2060 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2061 if (connector->encoder_ids[i] != 0) {
2062 if (put_user(connector->encoder_ids[i],
2063 encoder_ptr + copied)) {
2071 out_resp->count_encoders = encoders_count;
2074 mutex_unlock(&dev->mode_config.mutex);
2080 * drm_mode_getencoder - get encoder configuration
2081 * @dev: drm device for the ioctl
2082 * @data: data pointer for the ioctl
2083 * @file_priv: drm file for the ioctl call
2085 * Construct a encoder configuration structure to return to the user.
2087 * Called by the user via ioctl.
2090 * Zero on success, errno on failure.
2092 int drm_mode_getencoder(struct drm_device *dev, void *data,
2093 struct drm_file *file_priv)
2095 struct drm_mode_get_encoder *enc_resp = data;
2096 struct drm_encoder *encoder;
2099 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2102 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2106 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2108 enc_resp->crtc_id = encoder->crtc->base.id;
2110 enc_resp->crtc_id = 0;
2111 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2113 enc_resp->encoder_type = encoder->encoder_type;
2114 enc_resp->encoder_id = encoder->base.id;
2115 enc_resp->possible_crtcs = encoder->possible_crtcs;
2116 enc_resp->possible_clones = encoder->possible_clones;
2122 * drm_mode_getplane_res - enumerate all plane resources
2125 * @file_priv: DRM file info
2127 * Construct a list of plane ids to return to the user.
2129 * Called by the user via ioctl.
2132 * Zero on success, errno on failure.
2134 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2135 struct drm_file *file_priv)
2137 struct drm_mode_get_plane_res *plane_resp = data;
2138 struct drm_mode_config *config;
2139 struct drm_plane *plane;
2140 uint32_t __user *plane_ptr;
2142 unsigned num_planes;
2144 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2147 config = &dev->mode_config;
2149 if (file_priv->universal_planes)
2150 num_planes = config->num_total_plane;
2152 num_planes = config->num_overlay_plane;
2155 * This ioctl is called twice, once to determine how much space is
2156 * needed, and the 2nd time to fill it.
2159 (plane_resp->count_planes >= num_planes)) {
2160 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2162 /* Plane lists are invariant, no locking needed. */
2163 list_for_each_entry(plane, &config->plane_list, head) {
2165 * Unless userspace set the 'universal planes'
2166 * capability bit, only advertise overlays.
2168 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2169 !file_priv->universal_planes)
2172 if (put_user(plane->base.id, plane_ptr + copied))
2177 plane_resp->count_planes = num_planes;
2183 * drm_mode_getplane - get plane configuration
2186 * @file_priv: DRM file info
2188 * Construct a plane configuration structure to return to the user.
2190 * Called by the user via ioctl.
2193 * Zero on success, errno on failure.
2195 int drm_mode_getplane(struct drm_device *dev, void *data,
2196 struct drm_file *file_priv)
2198 struct drm_mode_get_plane *plane_resp = data;
2199 struct drm_plane *plane;
2200 uint32_t __user *format_ptr;
2203 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2206 plane = drm_plane_find(dev, plane_resp->plane_id);
2210 drm_modeset_lock(&plane->mutex, NULL);
2212 plane_resp->crtc_id = plane->crtc->base.id;
2214 plane_resp->crtc_id = 0;
2217 plane_resp->fb_id = plane->fb->base.id;
2219 plane_resp->fb_id = 0;
2220 drm_modeset_unlock(&plane->mutex);
2222 plane_resp->plane_id = plane->base.id;
2223 plane_resp->possible_crtcs = plane->possible_crtcs;
2224 plane_resp->gamma_size = 0;
2227 * This ioctl is called twice, once to determine how much space is
2228 * needed, and the 2nd time to fill it.
2230 if (plane->format_count &&
2231 (plane_resp->count_format_types >= plane->format_count)) {
2232 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2233 if (copy_to_user(format_ptr,
2234 plane->format_types,
2235 sizeof(uint32_t) * plane->format_count)) {
2239 plane_resp->count_format_types = plane->format_count;
2245 * setplane_internal - setplane handler for internal callers
2247 * Note that we assume an extra reference has already been taken on fb. If the
2248 * update fails, this reference will be dropped before return; if it succeeds,
2249 * the previous framebuffer (if any) will be unreferenced instead.
2251 * src_{x,y,w,h} are provided in 16.16 fixed point format
2253 static int __setplane_internal(struct drm_plane *plane,
2254 struct drm_crtc *crtc,
2255 struct drm_framebuffer *fb,
2256 int32_t crtc_x, int32_t crtc_y,
2257 uint32_t crtc_w, uint32_t crtc_h,
2258 /* src_{x,y,w,h} values are 16.16 fixed point */
2259 uint32_t src_x, uint32_t src_y,
2260 uint32_t src_w, uint32_t src_h)
2263 unsigned int fb_width, fb_height;
2266 /* No fb means shut it down */
2268 plane->old_fb = plane->fb;
2269 ret = plane->funcs->disable_plane(plane);
2274 plane->old_fb = NULL;
2279 /* Check whether this plane is usable on this CRTC */
2280 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2281 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2286 /* Check whether this plane supports the fb pixel format. */
2287 for (i = 0; i < plane->format_count; i++)
2288 if (fb->pixel_format == plane->format_types[i])
2290 if (i == plane->format_count) {
2291 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2292 drm_get_format_name(fb->pixel_format));
2297 fb_width = fb->width << 16;
2298 fb_height = fb->height << 16;
2300 /* Make sure source coordinates are inside the fb. */
2301 if (src_w > fb_width ||
2302 src_x > fb_width - src_w ||
2303 src_h > fb_height ||
2304 src_y > fb_height - src_h) {
2305 DRM_DEBUG_KMS("Invalid source coordinates "
2306 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2307 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2308 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2309 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2310 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2315 plane->old_fb = plane->fb;
2316 ret = plane->funcs->update_plane(plane, crtc, fb,
2317 crtc_x, crtc_y, crtc_w, crtc_h,
2318 src_x, src_y, src_w, src_h);
2324 plane->old_fb = NULL;
2329 drm_framebuffer_unreference(fb);
2331 drm_framebuffer_unreference(plane->old_fb);
2332 plane->old_fb = NULL;
2337 static int setplane_internal(struct drm_plane *plane,
2338 struct drm_crtc *crtc,
2339 struct drm_framebuffer *fb,
2340 int32_t crtc_x, int32_t crtc_y,
2341 uint32_t crtc_w, uint32_t crtc_h,
2342 /* src_{x,y,w,h} values are 16.16 fixed point */
2343 uint32_t src_x, uint32_t src_y,
2344 uint32_t src_w, uint32_t src_h)
2348 drm_modeset_lock_all(plane->dev);
2349 ret = __setplane_internal(plane, crtc, fb,
2350 crtc_x, crtc_y, crtc_w, crtc_h,
2351 src_x, src_y, src_w, src_h);
2352 drm_modeset_unlock_all(plane->dev);
2358 * drm_mode_setplane - configure a plane's configuration
2360 * @data: ioctl data*
2361 * @file_priv: DRM file info
2363 * Set plane configuration, including placement, fb, scaling, and other factors.
2364 * Or pass a NULL fb to disable (planes may be disabled without providing a
2368 * Zero on success, errno on failure.
2370 int drm_mode_setplane(struct drm_device *dev, void *data,
2371 struct drm_file *file_priv)
2373 struct drm_mode_set_plane *plane_req = data;
2374 struct drm_mode_object *obj;
2375 struct drm_plane *plane;
2376 struct drm_crtc *crtc = NULL;
2377 struct drm_framebuffer *fb = NULL;
2379 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2382 /* Give drivers some help against integer overflows */
2383 if (plane_req->crtc_w > INT_MAX ||
2384 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2385 plane_req->crtc_h > INT_MAX ||
2386 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2387 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2388 plane_req->crtc_w, plane_req->crtc_h,
2389 plane_req->crtc_x, plane_req->crtc_y);
2394 * First, find the plane, crtc, and fb objects. If not available,
2395 * we don't bother to call the driver.
2397 obj = drm_mode_object_find(dev, plane_req->plane_id,
2398 DRM_MODE_OBJECT_PLANE);
2400 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2401 plane_req->plane_id);
2404 plane = obj_to_plane(obj);
2406 if (plane_req->fb_id) {
2407 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2409 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2414 obj = drm_mode_object_find(dev, plane_req->crtc_id,
2415 DRM_MODE_OBJECT_CRTC);
2417 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2418 plane_req->crtc_id);
2421 crtc = obj_to_crtc(obj);
2425 * setplane_internal will take care of deref'ing either the old or new
2426 * framebuffer depending on success.
2428 return setplane_internal(plane, crtc, fb,
2429 plane_req->crtc_x, plane_req->crtc_y,
2430 plane_req->crtc_w, plane_req->crtc_h,
2431 plane_req->src_x, plane_req->src_y,
2432 plane_req->src_w, plane_req->src_h);
2436 * drm_mode_set_config_internal - helper to call ->set_config
2437 * @set: modeset config to set
2439 * This is a little helper to wrap internal calls to the ->set_config driver
2440 * interface. The only thing it adds is correct refcounting dance.
2443 * Zero on success, errno on failure.
2445 int drm_mode_set_config_internal(struct drm_mode_set *set)
2447 struct drm_crtc *crtc = set->crtc;
2448 struct drm_framebuffer *fb;
2449 struct drm_crtc *tmp;
2453 * NOTE: ->set_config can also disable other crtcs (if we steal all
2454 * connectors from it), hence we need to refcount the fbs across all
2455 * crtcs. Atomic modeset will have saner semantics ...
2457 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2458 tmp->primary->old_fb = tmp->primary->fb;
2462 ret = crtc->funcs->set_config(set);
2464 crtc->primary->crtc = crtc;
2465 crtc->primary->fb = fb;
2468 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2469 if (tmp->primary->fb)
2470 drm_framebuffer_reference(tmp->primary->fb);
2471 if (tmp->primary->old_fb)
2472 drm_framebuffer_unreference(tmp->primary->old_fb);
2473 tmp->primary->old_fb = NULL;
2478 EXPORT_SYMBOL(drm_mode_set_config_internal);
2481 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2483 * @crtc: CRTC that framebuffer will be displayed on
2486 * @mode: mode that framebuffer will be displayed under
2487 * @fb: framebuffer to check size of
2489 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2491 const struct drm_display_mode *mode,
2492 const struct drm_framebuffer *fb)
2495 int hdisplay, vdisplay;
2497 hdisplay = mode->hdisplay;
2498 vdisplay = mode->vdisplay;
2500 if (drm_mode_is_stereo(mode)) {
2501 struct drm_display_mode adjusted = *mode;
2503 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2504 hdisplay = adjusted.crtc_hdisplay;
2505 vdisplay = adjusted.crtc_vdisplay;
2508 if (crtc->invert_dimensions)
2509 swap(hdisplay, vdisplay);
2511 if (hdisplay > fb->width ||
2512 vdisplay > fb->height ||
2513 x > fb->width - hdisplay ||
2514 y > fb->height - vdisplay) {
2515 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2516 fb->width, fb->height, hdisplay, vdisplay, x, y,
2517 crtc->invert_dimensions ? " (inverted)" : "");
2523 EXPORT_SYMBOL(drm_crtc_check_viewport);
2526 * drm_mode_setcrtc - set CRTC configuration
2527 * @dev: drm device for the ioctl
2528 * @data: data pointer for the ioctl
2529 * @file_priv: drm file for the ioctl call
2531 * Build a new CRTC configuration based on user request.
2533 * Called by the user via ioctl.
2536 * Zero on success, errno on failure.
2538 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2539 struct drm_file *file_priv)
2541 struct drm_mode_config *config = &dev->mode_config;
2542 struct drm_mode_crtc *crtc_req = data;
2543 struct drm_crtc *crtc;
2544 struct drm_connector **connector_set = NULL, *connector;
2545 struct drm_framebuffer *fb = NULL;
2546 struct drm_display_mode *mode = NULL;
2547 struct drm_mode_set set;
2548 uint32_t __user *set_connectors_ptr;
2552 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2555 /* For some reason crtc x/y offsets are signed internally. */
2556 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2559 drm_modeset_lock_all(dev);
2560 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2562 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2566 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2568 if (crtc_req->mode_valid) {
2569 /* If we have a mode we need a framebuffer. */
2570 /* If we pass -1, set the mode with the currently bound fb */
2571 if (crtc_req->fb_id == -1) {
2572 if (!crtc->primary->fb) {
2573 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2577 fb = crtc->primary->fb;
2578 /* Make refcounting symmetric with the lookup path. */
2579 drm_framebuffer_reference(fb);
2581 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2583 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2590 mode = drm_mode_create(dev);
2596 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2598 DRM_DEBUG_KMS("Invalid mode\n");
2602 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2604 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2611 if (crtc_req->count_connectors == 0 && mode) {
2612 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2617 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2618 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2619 crtc_req->count_connectors);
2624 if (crtc_req->count_connectors > 0) {
2627 /* Avoid unbounded kernel memory allocation */
2628 if (crtc_req->count_connectors > config->num_connector) {
2633 connector_set = kmalloc(crtc_req->count_connectors *
2634 sizeof(struct drm_connector *),
2636 if (!connector_set) {
2641 for (i = 0; i < crtc_req->count_connectors; i++) {
2642 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2643 if (get_user(out_id, &set_connectors_ptr[i])) {
2648 connector = drm_connector_find(dev, out_id);
2650 DRM_DEBUG_KMS("Connector id %d unknown\n",
2655 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2659 connector_set[i] = connector;
2664 set.x = crtc_req->x;
2665 set.y = crtc_req->y;
2667 set.connectors = connector_set;
2668 set.num_connectors = crtc_req->count_connectors;
2670 ret = drm_mode_set_config_internal(&set);
2674 drm_framebuffer_unreference(fb);
2676 kfree(connector_set);
2677 drm_mode_destroy(dev, mode);
2678 drm_modeset_unlock_all(dev);
2683 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2684 * universal plane handler call
2685 * @crtc: crtc to update cursor for
2686 * @req: data pointer for the ioctl
2687 * @file_priv: drm file for the ioctl call
2689 * Legacy cursor ioctl's work directly with driver buffer handles. To
2690 * translate legacy ioctl calls into universal plane handler calls, we need to
2691 * wrap the native buffer handle in a drm_framebuffer.
2693 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2694 * buffer with a pitch of 4*width; the universal plane interface should be used
2695 * directly in cases where the hardware can support other buffer settings and
2696 * userspace wants to make use of these capabilities.
2699 * Zero on success, errno on failure.
2701 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2702 struct drm_mode_cursor2 *req,
2703 struct drm_file *file_priv)
2705 struct drm_device *dev = crtc->dev;
2706 struct drm_framebuffer *fb = NULL;
2707 struct drm_mode_fb_cmd2 fbreq = {
2708 .width = req->width,
2709 .height = req->height,
2710 .pixel_format = DRM_FORMAT_ARGB8888,
2711 .pitches = { req->width * 4 },
2712 .handles = { req->handle },
2714 int32_t crtc_x, crtc_y;
2715 uint32_t crtc_w = 0, crtc_h = 0;
2716 uint32_t src_w = 0, src_h = 0;
2719 BUG_ON(!crtc->cursor);
2720 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2723 * Obtain fb we'll be using (either new or existing) and take an extra
2724 * reference to it if fb != null. setplane will take care of dropping
2725 * the reference if the plane update fails.
2727 if (req->flags & DRM_MODE_CURSOR_BO) {
2729 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2731 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2735 drm_framebuffer_reference(fb);
2740 fb = crtc->cursor->fb;
2742 drm_framebuffer_reference(fb);
2745 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2749 crtc_x = crtc->cursor_x;
2750 crtc_y = crtc->cursor_y;
2755 crtc_h = fb->height;
2756 src_w = fb->width << 16;
2757 src_h = fb->height << 16;
2761 * setplane_internal will take care of deref'ing either the old or new
2762 * framebuffer depending on success.
2764 ret = __setplane_internal(crtc->cursor, crtc, fb,
2765 crtc_x, crtc_y, crtc_w, crtc_h,
2766 0, 0, src_w, src_h);
2768 /* Update successful; save new cursor position, if necessary */
2769 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2770 crtc->cursor_x = req->x;
2771 crtc->cursor_y = req->y;
2777 static int drm_mode_cursor_common(struct drm_device *dev,
2778 struct drm_mode_cursor2 *req,
2779 struct drm_file *file_priv)
2781 struct drm_crtc *crtc;
2784 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2787 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2790 crtc = drm_crtc_find(dev, req->crtc_id);
2792 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2797 * If this crtc has a universal cursor plane, call that plane's update
2798 * handler rather than using legacy cursor handlers.
2800 drm_modeset_lock_crtc(crtc, crtc->cursor);
2802 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2806 if (req->flags & DRM_MODE_CURSOR_BO) {
2807 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2811 /* Turns off the cursor if handle is 0 */
2812 if (crtc->funcs->cursor_set2)
2813 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2814 req->width, req->height, req->hot_x, req->hot_y);
2816 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2817 req->width, req->height);
2820 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2821 if (crtc->funcs->cursor_move) {
2822 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2829 drm_modeset_unlock_crtc(crtc);
2837 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2838 * @dev: drm device for the ioctl
2839 * @data: data pointer for the ioctl
2840 * @file_priv: drm file for the ioctl call
2842 * Set the cursor configuration based on user request.
2844 * Called by the user via ioctl.
2847 * Zero on success, errno on failure.
2849 int drm_mode_cursor_ioctl(struct drm_device *dev,
2850 void *data, struct drm_file *file_priv)
2852 struct drm_mode_cursor *req = data;
2853 struct drm_mode_cursor2 new_req;
2855 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2856 new_req.hot_x = new_req.hot_y = 0;
2858 return drm_mode_cursor_common(dev, &new_req, file_priv);
2862 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2863 * @dev: drm device for the ioctl
2864 * @data: data pointer for the ioctl
2865 * @file_priv: drm file for the ioctl call
2867 * Set the cursor configuration based on user request. This implements the 2nd
2868 * version of the cursor ioctl, which allows userspace to additionally specify
2869 * the hotspot of the pointer.
2871 * Called by the user via ioctl.
2874 * Zero on success, errno on failure.
2876 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2877 void *data, struct drm_file *file_priv)
2879 struct drm_mode_cursor2 *req = data;
2880 return drm_mode_cursor_common(dev, req, file_priv);
2884 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2885 * @bpp: bits per pixels
2886 * @depth: bit depth per pixel
2888 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2889 * Useful in fbdev emulation code, since that deals in those values.
2891 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2897 fmt = DRM_FORMAT_C8;
2901 fmt = DRM_FORMAT_XRGB1555;
2903 fmt = DRM_FORMAT_RGB565;
2906 fmt = DRM_FORMAT_RGB888;
2910 fmt = DRM_FORMAT_XRGB8888;
2911 else if (depth == 30)
2912 fmt = DRM_FORMAT_XRGB2101010;
2914 fmt = DRM_FORMAT_ARGB8888;
2917 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2918 fmt = DRM_FORMAT_XRGB8888;
2924 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2927 * drm_mode_addfb - add an FB to the graphics configuration
2928 * @dev: drm device for the ioctl
2929 * @data: data pointer for the ioctl
2930 * @file_priv: drm file for the ioctl call
2932 * Add a new FB to the specified CRTC, given a user request. This is the
2933 * original addfb ioctl which only supported RGB formats.
2935 * Called by the user via ioctl.
2938 * Zero on success, errno on failure.
2940 int drm_mode_addfb(struct drm_device *dev,
2941 void *data, struct drm_file *file_priv)
2943 struct drm_mode_fb_cmd *or = data;
2944 struct drm_mode_fb_cmd2 r = {};
2947 /* convert to new format and call new ioctl */
2948 r.fb_id = or->fb_id;
2949 r.width = or->width;
2950 r.height = or->height;
2951 r.pitches[0] = or->pitch;
2952 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2953 r.handles[0] = or->handle;
2955 ret = drm_mode_addfb2(dev, &r, file_priv);
2959 or->fb_id = r.fb_id;
2964 static int format_check(const struct drm_mode_fb_cmd2 *r)
2966 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2970 case DRM_FORMAT_RGB332:
2971 case DRM_FORMAT_BGR233:
2972 case DRM_FORMAT_XRGB4444:
2973 case DRM_FORMAT_XBGR4444:
2974 case DRM_FORMAT_RGBX4444:
2975 case DRM_FORMAT_BGRX4444:
2976 case DRM_FORMAT_ARGB4444:
2977 case DRM_FORMAT_ABGR4444:
2978 case DRM_FORMAT_RGBA4444:
2979 case DRM_FORMAT_BGRA4444:
2980 case DRM_FORMAT_XRGB1555:
2981 case DRM_FORMAT_XBGR1555:
2982 case DRM_FORMAT_RGBX5551:
2983 case DRM_FORMAT_BGRX5551:
2984 case DRM_FORMAT_ARGB1555:
2985 case DRM_FORMAT_ABGR1555:
2986 case DRM_FORMAT_RGBA5551:
2987 case DRM_FORMAT_BGRA5551:
2988 case DRM_FORMAT_RGB565:
2989 case DRM_FORMAT_BGR565:
2990 case DRM_FORMAT_RGB888:
2991 case DRM_FORMAT_BGR888:
2992 case DRM_FORMAT_XRGB8888:
2993 case DRM_FORMAT_XBGR8888:
2994 case DRM_FORMAT_RGBX8888:
2995 case DRM_FORMAT_BGRX8888:
2996 case DRM_FORMAT_ARGB8888:
2997 case DRM_FORMAT_ABGR8888:
2998 case DRM_FORMAT_RGBA8888:
2999 case DRM_FORMAT_BGRA8888:
3000 case DRM_FORMAT_XRGB2101010:
3001 case DRM_FORMAT_XBGR2101010:
3002 case DRM_FORMAT_RGBX1010102:
3003 case DRM_FORMAT_BGRX1010102:
3004 case DRM_FORMAT_ARGB2101010:
3005 case DRM_FORMAT_ABGR2101010:
3006 case DRM_FORMAT_RGBA1010102:
3007 case DRM_FORMAT_BGRA1010102:
3008 case DRM_FORMAT_YUYV:
3009 case DRM_FORMAT_YVYU:
3010 case DRM_FORMAT_UYVY:
3011 case DRM_FORMAT_VYUY:
3012 case DRM_FORMAT_AYUV:
3013 case DRM_FORMAT_NV12:
3014 case DRM_FORMAT_NV21:
3015 case DRM_FORMAT_NV16:
3016 case DRM_FORMAT_NV61:
3017 case DRM_FORMAT_NV24:
3018 case DRM_FORMAT_NV42:
3019 case DRM_FORMAT_YUV410:
3020 case DRM_FORMAT_YVU410:
3021 case DRM_FORMAT_YUV411:
3022 case DRM_FORMAT_YVU411:
3023 case DRM_FORMAT_YUV420:
3024 case DRM_FORMAT_YVU420:
3025 case DRM_FORMAT_YUV422:
3026 case DRM_FORMAT_YVU422:
3027 case DRM_FORMAT_YUV444:
3028 case DRM_FORMAT_YVU444:
3031 DRM_DEBUG_KMS("invalid pixel format %s\n",
3032 drm_get_format_name(r->pixel_format));
3037 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3039 int ret, hsub, vsub, num_planes, i;
3041 ret = format_check(r);
3043 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3044 drm_get_format_name(r->pixel_format));
3048 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3049 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3050 num_planes = drm_format_num_planes(r->pixel_format);
3052 if (r->width == 0 || r->width % hsub) {
3053 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3057 if (r->height == 0 || r->height % vsub) {
3058 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3062 for (i = 0; i < num_planes; i++) {
3063 unsigned int width = r->width / (i != 0 ? hsub : 1);
3064 unsigned int height = r->height / (i != 0 ? vsub : 1);
3065 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3067 if (!r->handles[i]) {
3068 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3072 if ((uint64_t) width * cpp > UINT_MAX)
3075 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3078 if (r->pitches[i] < width * cpp) {
3079 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3087 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3088 struct drm_mode_fb_cmd2 *r,
3089 struct drm_file *file_priv)
3091 struct drm_mode_config *config = &dev->mode_config;
3092 struct drm_framebuffer *fb;
3095 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3096 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3097 return ERR_PTR(-EINVAL);
3100 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3101 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3102 r->width, config->min_width, config->max_width);
3103 return ERR_PTR(-EINVAL);
3105 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3106 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3107 r->height, config->min_height, config->max_height);
3108 return ERR_PTR(-EINVAL);
3111 ret = framebuffer_check(r);
3113 return ERR_PTR(ret);
3115 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3117 DRM_DEBUG_KMS("could not create framebuffer\n");
3121 mutex_lock(&file_priv->fbs_lock);
3122 r->fb_id = fb->base.id;
3123 list_add(&fb->filp_head, &file_priv->fbs);
3124 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3125 mutex_unlock(&file_priv->fbs_lock);
3131 * drm_mode_addfb2 - add an FB to the graphics configuration
3132 * @dev: drm device for the ioctl
3133 * @data: data pointer for the ioctl
3134 * @file_priv: drm file for the ioctl call
3136 * Add a new FB to the specified CRTC, given a user request with format. This is
3137 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3138 * and uses fourcc codes as pixel format specifiers.
3140 * Called by the user via ioctl.
3143 * Zero on success, errno on failure.
3145 int drm_mode_addfb2(struct drm_device *dev,
3146 void *data, struct drm_file *file_priv)
3148 struct drm_framebuffer *fb;
3150 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3153 fb = add_framebuffer_internal(dev, data, file_priv);
3161 * drm_mode_rmfb - remove an FB from the configuration
3162 * @dev: drm device for the ioctl
3163 * @data: data pointer for the ioctl
3164 * @file_priv: drm file for the ioctl call
3166 * Remove the FB specified by the user.
3168 * Called by the user via ioctl.
3171 * Zero on success, errno on failure.
3173 int drm_mode_rmfb(struct drm_device *dev,
3174 void *data, struct drm_file *file_priv)
3176 struct drm_framebuffer *fb = NULL;
3177 struct drm_framebuffer *fbl = NULL;
3178 uint32_t *id = data;
3181 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3184 mutex_lock(&file_priv->fbs_lock);
3185 mutex_lock(&dev->mode_config.fb_lock);
3186 fb = __drm_framebuffer_lookup(dev, *id);
3190 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3196 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3197 __drm_framebuffer_unregister(dev, fb);
3199 list_del_init(&fb->filp_head);
3200 mutex_unlock(&dev->mode_config.fb_lock);
3201 mutex_unlock(&file_priv->fbs_lock);
3203 drm_framebuffer_remove(fb);
3208 mutex_unlock(&dev->mode_config.fb_lock);
3209 mutex_unlock(&file_priv->fbs_lock);
3215 * drm_mode_getfb - get FB info
3216 * @dev: drm device for the ioctl
3217 * @data: data pointer for the ioctl
3218 * @file_priv: drm file for the ioctl call
3220 * Lookup the FB given its ID and return info about it.
3222 * Called by the user via ioctl.
3225 * Zero on success, errno on failure.
3227 int drm_mode_getfb(struct drm_device *dev,
3228 void *data, struct drm_file *file_priv)
3230 struct drm_mode_fb_cmd *r = data;
3231 struct drm_framebuffer *fb;
3234 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3237 fb = drm_framebuffer_lookup(dev, r->fb_id);
3241 r->height = fb->height;
3242 r->width = fb->width;
3243 r->depth = fb->depth;
3244 r->bpp = fb->bits_per_pixel;
3245 r->pitch = fb->pitches[0];
3246 if (fb->funcs->create_handle) {
3247 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3248 drm_is_control_client(file_priv)) {
3249 ret = fb->funcs->create_handle(fb, file_priv,
3252 /* GET_FB() is an unprivileged ioctl so we must not
3253 * return a buffer-handle to non-master processes! For
3254 * backwards-compatibility reasons, we cannot make
3255 * GET_FB() privileged, so just return an invalid handle
3256 * for non-masters. */
3264 drm_framebuffer_unreference(fb);
3270 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3271 * @dev: drm device for the ioctl
3272 * @data: data pointer for the ioctl
3273 * @file_priv: drm file for the ioctl call
3275 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3276 * rectangle list. Generic userspace which does frontbuffer rendering must call
3277 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3278 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3280 * Modesetting drivers which always update the frontbuffer do not need to
3281 * implement the corresponding ->dirty framebuffer callback.
3283 * Called by the user via ioctl.
3286 * Zero on success, errno on failure.
3288 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3289 void *data, struct drm_file *file_priv)
3291 struct drm_clip_rect __user *clips_ptr;
3292 struct drm_clip_rect *clips = NULL;
3293 struct drm_mode_fb_dirty_cmd *r = data;
3294 struct drm_framebuffer *fb;
3299 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3302 fb = drm_framebuffer_lookup(dev, r->fb_id);
3306 num_clips = r->num_clips;
3307 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3309 if (!num_clips != !clips_ptr) {
3314 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3316 /* If userspace annotates copy, clips must come in pairs */
3317 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3322 if (num_clips && clips_ptr) {
3323 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3327 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3333 ret = copy_from_user(clips, clips_ptr,
3334 num_clips * sizeof(*clips));
3341 if (fb->funcs->dirty) {
3342 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3351 drm_framebuffer_unreference(fb);
3358 * drm_fb_release - remove and free the FBs on this file
3359 * @priv: drm file for the ioctl
3361 * Destroy all the FBs associated with @filp.
3363 * Called by the user via ioctl.
3366 * Zero on success, errno on failure.
3368 void drm_fb_release(struct drm_file *priv)
3370 struct drm_device *dev = priv->minor->dev;
3371 struct drm_framebuffer *fb, *tfb;
3374 * When the file gets released that means no one else can access the fb
3375 * list any more, so no need to grab fpriv->fbs_lock. And we need to to
3376 * avoid upsetting lockdep since the universal cursor code adds a
3377 * framebuffer while holding mutex locks.
3379 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3380 * locks is impossible here since no one else but this function can get
3383 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3385 mutex_lock(&dev->mode_config.fb_lock);
3386 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3387 __drm_framebuffer_unregister(dev, fb);
3388 mutex_unlock(&dev->mode_config.fb_lock);
3390 list_del_init(&fb->filp_head);
3392 /* This will also drop the fpriv->fbs reference. */
3393 drm_framebuffer_remove(fb);
3398 * drm_property_create - create a new property type
3400 * @flags: flags specifying the property type
3401 * @name: name of the property
3402 * @num_values: number of pre-defined values
3404 * This creates a new generic drm property which can then be attached to a drm
3405 * object with drm_object_attach_property. The returned property object must be
3406 * freed with drm_property_destroy.
3408 * Note that the DRM core keeps a per-device list of properties and that, if
3409 * drm_mode_config_cleanup() is called, it will destroy all properties created
3413 * A pointer to the newly created property on success, NULL on failure.
3415 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3416 const char *name, int num_values)
3418 struct drm_property *property = NULL;
3421 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3425 property->dev = dev;
3428 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3429 if (!property->values)
3433 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3437 property->flags = flags;
3438 property->num_values = num_values;
3439 INIT_LIST_HEAD(&property->enum_blob_list);
3442 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3443 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3446 list_add_tail(&property->head, &dev->mode_config.property_list);
3448 WARN_ON(!drm_property_type_valid(property));
3452 kfree(property->values);
3456 EXPORT_SYMBOL(drm_property_create);
3459 * drm_property_create_enum - create a new enumeration property type
3461 * @flags: flags specifying the property type
3462 * @name: name of the property
3463 * @props: enumeration lists with property values
3464 * @num_values: number of pre-defined values
3466 * This creates a new generic drm property which can then be attached to a drm
3467 * object with drm_object_attach_property. The returned property object must be
3468 * freed with drm_property_destroy.
3470 * Userspace is only allowed to set one of the predefined values for enumeration
3474 * A pointer to the newly created property on success, NULL on failure.
3476 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3478 const struct drm_prop_enum_list *props,
3481 struct drm_property *property;
3484 flags |= DRM_MODE_PROP_ENUM;
3486 property = drm_property_create(dev, flags, name, num_values);
3490 for (i = 0; i < num_values; i++) {
3491 ret = drm_property_add_enum(property, i,
3495 drm_property_destroy(dev, property);
3502 EXPORT_SYMBOL(drm_property_create_enum);
3505 * drm_property_create_bitmask - create a new bitmask property type
3507 * @flags: flags specifying the property type
3508 * @name: name of the property
3509 * @props: enumeration lists with property bitflags
3510 * @num_props: size of the @props array
3511 * @supported_bits: bitmask of all supported enumeration values
3513 * This creates a new bitmask drm property which can then be attached to a drm
3514 * object with drm_object_attach_property. The returned property object must be
3515 * freed with drm_property_destroy.
3517 * Compared to plain enumeration properties userspace is allowed to set any
3518 * or'ed together combination of the predefined property bitflag values
3521 * A pointer to the newly created property on success, NULL on failure.
3523 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3524 int flags, const char *name,
3525 const struct drm_prop_enum_list *props,
3527 uint64_t supported_bits)
3529 struct drm_property *property;
3530 int i, ret, index = 0;
3531 int num_values = hweight64(supported_bits);
3533 flags |= DRM_MODE_PROP_BITMASK;
3535 property = drm_property_create(dev, flags, name, num_values);
3538 for (i = 0; i < num_props; i++) {
3539 if (!(supported_bits & (1ULL << props[i].type)))
3542 if (WARN_ON(index >= num_values)) {
3543 drm_property_destroy(dev, property);
3547 ret = drm_property_add_enum(property, index++,
3551 drm_property_destroy(dev, property);
3558 EXPORT_SYMBOL(drm_property_create_bitmask);
3560 static struct drm_property *property_create_range(struct drm_device *dev,
3561 int flags, const char *name,
3562 uint64_t min, uint64_t max)
3564 struct drm_property *property;
3566 property = drm_property_create(dev, flags, name, 2);
3570 property->values[0] = min;
3571 property->values[1] = max;
3577 * drm_property_create_range - create a new ranged property type
3579 * @flags: flags specifying the property type
3580 * @name: name of the property
3581 * @min: minimum value of the property
3582 * @max: maximum value of the property
3584 * This creates a new generic drm property which can then be attached to a drm
3585 * object with drm_object_attach_property. The returned property object must be
3586 * freed with drm_property_destroy.
3588 * Userspace is allowed to set any integer value in the (min, max) range
3592 * A pointer to the newly created property on success, NULL on failure.
3594 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3596 uint64_t min, uint64_t max)
3598 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3601 EXPORT_SYMBOL(drm_property_create_range);
3603 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3604 int flags, const char *name,
3605 int64_t min, int64_t max)
3607 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3608 name, I642U64(min), I642U64(max));
3610 EXPORT_SYMBOL(drm_property_create_signed_range);
3612 struct drm_property *drm_property_create_object(struct drm_device *dev,
3613 int flags, const char *name, uint32_t type)
3615 struct drm_property *property;
3617 flags |= DRM_MODE_PROP_OBJECT;
3619 property = drm_property_create(dev, flags, name, 1);
3623 property->values[0] = type;
3627 EXPORT_SYMBOL(drm_property_create_object);
3630 * drm_property_add_enum - add a possible value to an enumeration property
3631 * @property: enumeration property to change
3632 * @index: index of the new enumeration
3633 * @value: value of the new enumeration
3634 * @name: symbolic name of the new enumeration
3636 * This functions adds enumerations to a property.
3638 * It's use is deprecated, drivers should use one of the more specific helpers
3639 * to directly create the property with all enumerations already attached.
3642 * Zero on success, error code on failure.
3644 int drm_property_add_enum(struct drm_property *property, int index,
3645 uint64_t value, const char *name)
3647 struct drm_property_enum *prop_enum;
3649 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3650 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3654 * Bitmask enum properties have the additional constraint of values
3657 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3661 if (!list_empty(&property->enum_blob_list)) {
3662 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3663 if (prop_enum->value == value) {
3664 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3665 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3671 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3675 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3676 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3677 prop_enum->value = value;
3679 property->values[index] = value;
3680 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3683 EXPORT_SYMBOL(drm_property_add_enum);
3686 * drm_property_destroy - destroy a drm property
3688 * @property: property to destry
3690 * This function frees a property including any attached resources like
3691 * enumeration values.
3693 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3695 struct drm_property_enum *prop_enum, *pt;
3697 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3698 list_del(&prop_enum->head);
3702 if (property->num_values)
3703 kfree(property->values);
3704 drm_mode_object_put(dev, &property->base);
3705 list_del(&property->head);
3708 EXPORT_SYMBOL(drm_property_destroy);
3711 * drm_object_attach_property - attach a property to a modeset object
3712 * @obj: drm modeset object
3713 * @property: property to attach
3714 * @init_val: initial value of the property
3716 * This attaches the given property to the modeset object with the given initial
3717 * value. Currently this function cannot fail since the properties are stored in
3718 * a statically sized array.
3720 void drm_object_attach_property(struct drm_mode_object *obj,
3721 struct drm_property *property,
3724 int count = obj->properties->count;
3726 if (count == DRM_OBJECT_MAX_PROPERTY) {
3727 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3728 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3729 "you see this message on the same object type.\n",
3734 obj->properties->ids[count] = property->base.id;
3735 obj->properties->values[count] = init_val;
3736 obj->properties->count++;
3738 EXPORT_SYMBOL(drm_object_attach_property);
3741 * drm_object_property_set_value - set the value of a property
3742 * @obj: drm mode object to set property value for
3743 * @property: property to set
3744 * @val: value the property should be set to
3746 * This functions sets a given property on a given object. This function only
3747 * changes the software state of the property, it does not call into the
3748 * driver's ->set_property callback.
3751 * Zero on success, error code on failure.
3753 int drm_object_property_set_value(struct drm_mode_object *obj,
3754 struct drm_property *property, uint64_t val)
3758 for (i = 0; i < obj->properties->count; i++) {
3759 if (obj->properties->ids[i] == property->base.id) {
3760 obj->properties->values[i] = val;
3767 EXPORT_SYMBOL(drm_object_property_set_value);
3770 * drm_object_property_get_value - retrieve the value of a property
3771 * @obj: drm mode object to get property value from
3772 * @property: property to retrieve
3773 * @val: storage for the property value
3775 * This function retrieves the softare state of the given property for the given
3776 * property. Since there is no driver callback to retrieve the current property
3777 * value this might be out of sync with the hardware, depending upon the driver
3781 * Zero on success, error code on failure.
3783 int drm_object_property_get_value(struct drm_mode_object *obj,
3784 struct drm_property *property, uint64_t *val)
3788 for (i = 0; i < obj->properties->count; i++) {
3789 if (obj->properties->ids[i] == property->base.id) {
3790 *val = obj->properties->values[i];
3797 EXPORT_SYMBOL(drm_object_property_get_value);
3800 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3803 * @file_priv: DRM file info
3805 * This function retrieves the current value for an connectors's property.
3807 * Called by the user via ioctl.
3810 * Zero on success, errno on failure.
3812 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3813 void *data, struct drm_file *file_priv)
3815 struct drm_mode_get_property *out_resp = data;
3816 struct drm_property *property;
3819 int value_count = 0;
3822 struct drm_property_enum *prop_enum;
3823 struct drm_mode_property_enum __user *enum_ptr;
3824 struct drm_property_blob *prop_blob;
3825 uint32_t __user *blob_id_ptr;
3826 uint64_t __user *values_ptr;
3827 uint32_t __user *blob_length_ptr;
3829 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3832 drm_modeset_lock_all(dev);
3833 property = drm_property_find(dev, out_resp->prop_id);
3839 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3840 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3841 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3843 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3844 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3848 value_count = property->num_values;
3850 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3851 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3852 out_resp->flags = property->flags;
3854 if ((out_resp->count_values >= value_count) && value_count) {
3855 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3856 for (i = 0; i < value_count; i++) {
3857 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3863 out_resp->count_values = value_count;
3865 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3866 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3867 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3869 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3870 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3872 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3877 if (copy_to_user(&enum_ptr[copied].name,
3878 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3885 out_resp->count_enum_blobs = enum_count;
3888 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3889 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3891 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3892 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3894 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3895 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3900 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3908 out_resp->count_enum_blobs = blob_count;
3911 drm_modeset_unlock_all(dev);
3915 static struct drm_property_blob *
3916 drm_property_create_blob(struct drm_device *dev, size_t length,
3919 struct drm_property_blob *blob;
3922 if (!length || !data)
3925 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3929 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3935 blob->length = length;
3937 memcpy(blob->data, data, length);
3939 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3943 static void drm_property_destroy_blob(struct drm_device *dev,
3944 struct drm_property_blob *blob)
3946 drm_mode_object_put(dev, &blob->base);
3947 list_del(&blob->head);
3952 * drm_mode_getblob_ioctl - get the contents of a blob property value
3955 * @file_priv: DRM file info
3957 * This function retrieves the contents of a blob property. The value stored in
3958 * an object's blob property is just a normal modeset object id.
3960 * Called by the user via ioctl.
3963 * Zero on success, errno on failure.
3965 int drm_mode_getblob_ioctl(struct drm_device *dev,
3966 void *data, struct drm_file *file_priv)
3968 struct drm_mode_get_blob *out_resp = data;
3969 struct drm_property_blob *blob;
3971 void __user *blob_ptr;
3973 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3976 drm_modeset_lock_all(dev);
3977 blob = drm_property_blob_find(dev, out_resp->blob_id);
3983 if (out_resp->length == blob->length) {
3984 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3985 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3990 out_resp->length = blob->length;
3993 drm_modeset_unlock_all(dev);
3998 * drm_mode_connector_set_path_property - set tile property on connector
3999 * @connector: connector to set property on.
4000 * @path: path to use for property.
4002 * This creates a property to expose to userspace to specify a
4003 * connector path. This is mainly used for DisplayPort MST where
4004 * connectors have a topology and we want to allow userspace to give
4005 * them more meaningful names.
4008 * Zero on success, errno on failure.
4010 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4013 struct drm_device *dev = connector->dev;
4014 size_t size = strlen(path) + 1;
4017 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4019 if (!connector->path_blob_ptr)
4022 ret = drm_object_property_set_value(&connector->base,
4023 dev->mode_config.path_property,
4024 connector->path_blob_ptr->base.id);
4027 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4030 * drm_mode_connector_update_edid_property - update the edid property of a connector
4031 * @connector: drm connector
4032 * @edid: new value of the edid property
4034 * This function creates a new blob modeset object and assigns its id to the
4035 * connector's edid property.
4038 * Zero on success, errno on failure.
4040 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4041 const struct edid *edid)
4043 struct drm_device *dev = connector->dev;
4047 /* ignore requests to set edid when overridden */
4048 if (connector->override_edid)
4051 if (connector->edid_blob_ptr)
4052 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4054 /* Delete edid, when there is none. */
4056 connector->edid_blob_ptr = NULL;
4057 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4061 size = EDID_LENGTH * (1 + edid->extensions);
4062 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4064 if (!connector->edid_blob_ptr)
4067 ret = drm_object_property_set_value(&connector->base,
4068 dev->mode_config.edid_property,
4069 connector->edid_blob_ptr->base.id);
4073 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4075 static bool drm_property_change_is_valid(struct drm_property *property,
4078 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4081 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4082 if (value < property->values[0] || value > property->values[1])
4085 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4086 int64_t svalue = U642I64(value);
4087 if (svalue < U642I64(property->values[0]) ||
4088 svalue > U642I64(property->values[1]))
4091 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4093 uint64_t valid_mask = 0;
4094 for (i = 0; i < property->num_values; i++)
4095 valid_mask |= (1ULL << property->values[i]);
4096 return !(value & ~valid_mask);
4097 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4098 /* Only the driver knows */
4100 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4101 struct drm_mode_object *obj;
4102 /* a zero value for an object property translates to null: */
4106 * NOTE: use _object_find() directly to bypass restriction on
4107 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4108 * object this could race against object finalization, so it
4109 * simply tells us that the object *was* valid. Which is good
4112 obj = _object_find(property->dev, value, property->values[0]);
4116 for (i = 0; i < property->num_values; i++)
4117 if (property->values[i] == value)
4124 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4127 * @file_priv: DRM file info
4129 * This function sets the current value for a connectors's property. It also
4130 * calls into a driver's ->set_property callback to update the hardware state
4132 * Called by the user via ioctl.
4135 * Zero on success, errno on failure.
4137 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4138 void *data, struct drm_file *file_priv)
4140 struct drm_mode_connector_set_property *conn_set_prop = data;
4141 struct drm_mode_obj_set_property obj_set_prop = {
4142 .value = conn_set_prop->value,
4143 .prop_id = conn_set_prop->prop_id,
4144 .obj_id = conn_set_prop->connector_id,
4145 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4148 /* It does all the locking and checking we need */
4149 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4152 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4153 struct drm_property *property,
4157 struct drm_connector *connector = obj_to_connector(obj);
4159 /* Do DPMS ourselves */
4160 if (property == connector->dev->mode_config.dpms_property) {
4161 if (connector->funcs->dpms)
4162 (*connector->funcs->dpms)(connector, (int)value);
4164 } else if (connector->funcs->set_property)
4165 ret = connector->funcs->set_property(connector, property, value);
4167 /* store the property value if successful */
4169 drm_object_property_set_value(&connector->base, property, value);
4173 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4174 struct drm_property *property,
4178 struct drm_crtc *crtc = obj_to_crtc(obj);
4180 if (crtc->funcs->set_property)
4181 ret = crtc->funcs->set_property(crtc, property, value);
4183 drm_object_property_set_value(obj, property, value);
4189 * drm_mode_plane_set_obj_prop - set the value of a property
4190 * @plane: drm plane object to set property value for
4191 * @property: property to set
4192 * @value: value the property should be set to
4194 * This functions sets a given property on a given plane object. This function
4195 * calls the driver's ->set_property callback and changes the software state of
4196 * the property if the callback succeeds.
4199 * Zero on success, error code on failure.
4201 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4202 struct drm_property *property,
4206 struct drm_mode_object *obj = &plane->base;
4208 if (plane->funcs->set_property)
4209 ret = plane->funcs->set_property(plane, property, value);
4211 drm_object_property_set_value(obj, property, value);
4215 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4218 * drm_mode_getproperty_ioctl - get the current value of a object's property
4221 * @file_priv: DRM file info
4223 * This function retrieves the current value for an object's property. Compared
4224 * to the connector specific ioctl this one is extended to also work on crtc and
4227 * Called by the user via ioctl.
4230 * Zero on success, errno on failure.
4232 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4233 struct drm_file *file_priv)
4235 struct drm_mode_obj_get_properties *arg = data;
4236 struct drm_mode_object *obj;
4240 int props_count = 0;
4241 uint32_t __user *props_ptr;
4242 uint64_t __user *prop_values_ptr;
4244 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4247 drm_modeset_lock_all(dev);
4249 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4254 if (!obj->properties) {
4259 props_count = obj->properties->count;
4261 /* This ioctl is called twice, once to determine how much space is
4262 * needed, and the 2nd time to fill it. */
4263 if ((arg->count_props >= props_count) && props_count) {
4265 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
4266 prop_values_ptr = (uint64_t __user *)(unsigned long)
4267 (arg->prop_values_ptr);
4268 for (i = 0; i < props_count; i++) {
4269 if (put_user(obj->properties->ids[i],
4270 props_ptr + copied)) {
4274 if (put_user(obj->properties->values[i],
4275 prop_values_ptr + copied)) {
4282 arg->count_props = props_count;
4284 drm_modeset_unlock_all(dev);
4289 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4292 * @file_priv: DRM file info
4294 * This function sets the current value for an object's property. It also calls
4295 * into a driver's ->set_property callback to update the hardware state.
4296 * Compared to the connector specific ioctl this one is extended to also work on
4297 * crtc and plane objects.
4299 * Called by the user via ioctl.
4302 * Zero on success, errno on failure.
4304 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4305 struct drm_file *file_priv)
4307 struct drm_mode_obj_set_property *arg = data;
4308 struct drm_mode_object *arg_obj;
4309 struct drm_mode_object *prop_obj;
4310 struct drm_property *property;
4314 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4317 drm_modeset_lock_all(dev);
4319 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4324 if (!arg_obj->properties)
4327 for (i = 0; i < arg_obj->properties->count; i++)
4328 if (arg_obj->properties->ids[i] == arg->prop_id)
4331 if (i == arg_obj->properties->count)
4334 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4335 DRM_MODE_OBJECT_PROPERTY);
4340 property = obj_to_property(prop_obj);
4342 if (!drm_property_change_is_valid(property, arg->value))
4345 switch (arg_obj->type) {
4346 case DRM_MODE_OBJECT_CONNECTOR:
4347 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4350 case DRM_MODE_OBJECT_CRTC:
4351 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4353 case DRM_MODE_OBJECT_PLANE:
4354 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4355 property, arg->value);
4360 drm_modeset_unlock_all(dev);
4365 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4366 * @connector: connector to attach
4367 * @encoder: encoder to attach @connector to
4369 * This function links up a connector to an encoder. Note that the routing
4370 * restrictions between encoders and crtcs are exposed to userspace through the
4371 * possible_clones and possible_crtcs bitmasks.
4374 * Zero on success, errno on failure.
4376 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4377 struct drm_encoder *encoder)
4381 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4382 if (connector->encoder_ids[i] == 0) {
4383 connector->encoder_ids[i] = encoder->base.id;
4389 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4392 * drm_mode_crtc_set_gamma_size - set the gamma table size
4393 * @crtc: CRTC to set the gamma table size for
4394 * @gamma_size: size of the gamma table
4396 * Drivers which support gamma tables should set this to the supported gamma
4397 * table size when initializing the CRTC. Currently the drm core only supports a
4398 * fixed gamma table size.
4401 * Zero on success, errno on failure.
4403 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4406 crtc->gamma_size = gamma_size;
4408 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4409 if (!crtc->gamma_store) {
4410 crtc->gamma_size = 0;
4416 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4419 * drm_mode_gamma_set_ioctl - set the gamma table
4422 * @file_priv: DRM file info
4424 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4425 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4427 * Called by the user via ioctl.
4430 * Zero on success, errno on failure.
4432 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4433 void *data, struct drm_file *file_priv)
4435 struct drm_mode_crtc_lut *crtc_lut = data;
4436 struct drm_crtc *crtc;
4437 void *r_base, *g_base, *b_base;
4441 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4444 drm_modeset_lock_all(dev);
4445 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4451 if (crtc->funcs->gamma_set == NULL) {
4456 /* memcpy into gamma store */
4457 if (crtc_lut->gamma_size != crtc->gamma_size) {
4462 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4463 r_base = crtc->gamma_store;
4464 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4469 g_base = r_base + size;
4470 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4475 b_base = g_base + size;
4476 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4481 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4484 drm_modeset_unlock_all(dev);
4490 * drm_mode_gamma_get_ioctl - get the gamma table
4493 * @file_priv: DRM file info
4495 * Copy the current gamma table into the storage provided. This also provides
4496 * the gamma table size the driver expects, which can be used to size the
4497 * allocated storage.
4499 * Called by the user via ioctl.
4502 * Zero on success, errno on failure.
4504 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4505 void *data, struct drm_file *file_priv)
4507 struct drm_mode_crtc_lut *crtc_lut = data;
4508 struct drm_crtc *crtc;
4509 void *r_base, *g_base, *b_base;
4513 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4516 drm_modeset_lock_all(dev);
4517 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4523 /* memcpy into gamma store */
4524 if (crtc_lut->gamma_size != crtc->gamma_size) {
4529 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4530 r_base = crtc->gamma_store;
4531 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4536 g_base = r_base + size;
4537 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4542 b_base = g_base + size;
4543 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4548 drm_modeset_unlock_all(dev);
4553 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4556 * @file_priv: DRM file info
4558 * This schedules an asynchronous update on a given CRTC, called page flip.
4559 * Optionally a drm event is generated to signal the completion of the event.
4560 * Generic drivers cannot assume that a pageflip with changed framebuffer
4561 * properties (including driver specific metadata like tiling layout) will work,
4562 * but some drivers support e.g. pixel format changes through the pageflip
4565 * Called by the user via ioctl.
4568 * Zero on success, errno on failure.
4570 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4571 void *data, struct drm_file *file_priv)
4573 struct drm_mode_crtc_page_flip *page_flip = data;
4574 struct drm_crtc *crtc;
4575 struct drm_framebuffer *fb = NULL;
4576 struct drm_pending_vblank_event *e = NULL;
4577 unsigned long flags;
4580 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4581 page_flip->reserved != 0)
4584 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4587 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4591 drm_modeset_lock_crtc(crtc, crtc->primary);
4592 if (crtc->primary->fb == NULL) {
4593 /* The framebuffer is currently unbound, presumably
4594 * due to a hotplug event, that userspace has not
4601 if (crtc->funcs->page_flip == NULL)
4604 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4610 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4614 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4615 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4620 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4622 spin_lock_irqsave(&dev->event_lock, flags);
4623 if (file_priv->event_space < sizeof e->event) {
4624 spin_unlock_irqrestore(&dev->event_lock, flags);
4627 file_priv->event_space -= sizeof e->event;
4628 spin_unlock_irqrestore(&dev->event_lock, flags);
4630 e = kzalloc(sizeof *e, GFP_KERNEL);
4632 spin_lock_irqsave(&dev->event_lock, flags);
4633 file_priv->event_space += sizeof e->event;
4634 spin_unlock_irqrestore(&dev->event_lock, flags);
4638 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4639 e->event.base.length = sizeof e->event;
4640 e->event.user_data = page_flip->user_data;
4641 e->base.event = &e->event.base;
4642 e->base.file_priv = file_priv;
4644 (void (*) (struct drm_pending_event *)) kfree;
4647 crtc->primary->old_fb = crtc->primary->fb;
4648 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4650 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4651 spin_lock_irqsave(&dev->event_lock, flags);
4652 file_priv->event_space += sizeof e->event;
4653 spin_unlock_irqrestore(&dev->event_lock, flags);
4656 /* Keep the old fb, don't unref it. */
4657 crtc->primary->old_fb = NULL;
4660 * Warn if the driver hasn't properly updated the crtc->fb
4661 * field to reflect that the new framebuffer is now used.
4662 * Failing to do so will screw with the reference counting
4665 WARN_ON(crtc->primary->fb != fb);
4666 /* Unref only the old framebuffer. */
4672 drm_framebuffer_unreference(fb);
4673 if (crtc->primary->old_fb)
4674 drm_framebuffer_unreference(crtc->primary->old_fb);
4675 crtc->primary->old_fb = NULL;
4676 drm_modeset_unlock_crtc(crtc);
4682 * drm_mode_config_reset - call ->reset callbacks
4685 * This functions calls all the crtc's, encoder's and connector's ->reset
4686 * callback. Drivers can use this in e.g. their driver load or resume code to
4687 * reset hardware and software state.
4689 void drm_mode_config_reset(struct drm_device *dev)
4691 struct drm_crtc *crtc;
4692 struct drm_plane *plane;
4693 struct drm_encoder *encoder;
4694 struct drm_connector *connector;
4696 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4697 if (plane->funcs->reset)
4698 plane->funcs->reset(plane);
4700 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4701 if (crtc->funcs->reset)
4702 crtc->funcs->reset(crtc);
4704 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4705 if (encoder->funcs->reset)
4706 encoder->funcs->reset(encoder);
4708 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4709 connector->status = connector_status_unknown;
4711 if (connector->funcs->reset)
4712 connector->funcs->reset(connector);
4715 EXPORT_SYMBOL(drm_mode_config_reset);
4718 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4721 * @file_priv: DRM file info
4723 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4724 * TTM or something else entirely) and returns the resulting buffer handle. This
4725 * handle can then be wrapped up into a framebuffer modeset object.
4727 * Note that userspace is not allowed to use such objects for render
4728 * acceleration - drivers must create their own private ioctls for such a use
4731 * Called by the user via ioctl.
4734 * Zero on success, errno on failure.
4736 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4737 void *data, struct drm_file *file_priv)
4739 struct drm_mode_create_dumb *args = data;
4740 u32 cpp, stride, size;
4742 if (!dev->driver->dumb_create)
4744 if (!args->width || !args->height || !args->bpp)
4747 /* overflow checks for 32bit size calculations */
4748 /* NOTE: DIV_ROUND_UP() can overflow */
4749 cpp = DIV_ROUND_UP(args->bpp, 8);
4750 if (!cpp || cpp > 0xffffffffU / args->width)
4752 stride = cpp * args->width;
4753 if (args->height > 0xffffffffU / stride)
4756 /* test for wrap-around */
4757 size = args->height * stride;
4758 if (PAGE_ALIGN(size) == 0)
4761 return dev->driver->dumb_create(file_priv, dev, args);
4765 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4768 * @file_priv: DRM file info
4770 * Allocate an offset in the drm device node's address space to be able to
4771 * memory map a dumb buffer.
4773 * Called by the user via ioctl.
4776 * Zero on success, errno on failure.
4778 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4779 void *data, struct drm_file *file_priv)
4781 struct drm_mode_map_dumb *args = data;
4783 /* call driver ioctl to get mmap offset */
4784 if (!dev->driver->dumb_map_offset)
4787 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4791 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4794 * @file_priv: DRM file info
4796 * This destroys the userspace handle for the given dumb backing storage buffer.
4797 * Since buffer objects must be reference counted in the kernel a buffer object
4798 * won't be immediately freed if a framebuffer modeset object still uses it.
4800 * Called by the user via ioctl.
4803 * Zero on success, errno on failure.
4805 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4806 void *data, struct drm_file *file_priv)
4808 struct drm_mode_destroy_dumb *args = data;
4810 if (!dev->driver->dumb_destroy)
4813 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4817 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4818 * @format: pixel format (DRM_FORMAT_*)
4819 * @depth: storage for the depth value
4820 * @bpp: storage for the bpp value
4822 * This only supports RGB formats here for compat with code that doesn't use
4823 * pixel formats directly yet.
4825 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4830 case DRM_FORMAT_RGB332:
4831 case DRM_FORMAT_BGR233:
4835 case DRM_FORMAT_XRGB1555:
4836 case DRM_FORMAT_XBGR1555:
4837 case DRM_FORMAT_RGBX5551:
4838 case DRM_FORMAT_BGRX5551:
4839 case DRM_FORMAT_ARGB1555:
4840 case DRM_FORMAT_ABGR1555:
4841 case DRM_FORMAT_RGBA5551:
4842 case DRM_FORMAT_BGRA5551:
4846 case DRM_FORMAT_RGB565:
4847 case DRM_FORMAT_BGR565:
4851 case DRM_FORMAT_RGB888:
4852 case DRM_FORMAT_BGR888:
4856 case DRM_FORMAT_XRGB8888:
4857 case DRM_FORMAT_XBGR8888:
4858 case DRM_FORMAT_RGBX8888:
4859 case DRM_FORMAT_BGRX8888:
4863 case DRM_FORMAT_XRGB2101010:
4864 case DRM_FORMAT_XBGR2101010:
4865 case DRM_FORMAT_RGBX1010102:
4866 case DRM_FORMAT_BGRX1010102:
4867 case DRM_FORMAT_ARGB2101010:
4868 case DRM_FORMAT_ABGR2101010:
4869 case DRM_FORMAT_RGBA1010102:
4870 case DRM_FORMAT_BGRA1010102:
4874 case DRM_FORMAT_ARGB8888:
4875 case DRM_FORMAT_ABGR8888:
4876 case DRM_FORMAT_RGBA8888:
4877 case DRM_FORMAT_BGRA8888:
4882 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4883 drm_get_format_name(format));
4889 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4892 * drm_format_num_planes - get the number of planes for format
4893 * @format: pixel format (DRM_FORMAT_*)
4896 * The number of planes used by the specified pixel format.
4898 int drm_format_num_planes(uint32_t format)
4901 case DRM_FORMAT_YUV410:
4902 case DRM_FORMAT_YVU410:
4903 case DRM_FORMAT_YUV411:
4904 case DRM_FORMAT_YVU411:
4905 case DRM_FORMAT_YUV420:
4906 case DRM_FORMAT_YVU420:
4907 case DRM_FORMAT_YUV422:
4908 case DRM_FORMAT_YVU422:
4909 case DRM_FORMAT_YUV444:
4910 case DRM_FORMAT_YVU444:
4912 case DRM_FORMAT_NV12:
4913 case DRM_FORMAT_NV21:
4914 case DRM_FORMAT_NV16:
4915 case DRM_FORMAT_NV61:
4916 case DRM_FORMAT_NV24:
4917 case DRM_FORMAT_NV42:
4923 EXPORT_SYMBOL(drm_format_num_planes);
4926 * drm_format_plane_cpp - determine the bytes per pixel value
4927 * @format: pixel format (DRM_FORMAT_*)
4928 * @plane: plane index
4931 * The bytes per pixel value for the specified plane.
4933 int drm_format_plane_cpp(uint32_t format, int plane)
4938 if (plane >= drm_format_num_planes(format))
4942 case DRM_FORMAT_YUYV:
4943 case DRM_FORMAT_YVYU:
4944 case DRM_FORMAT_UYVY:
4945 case DRM_FORMAT_VYUY:
4947 case DRM_FORMAT_NV12:
4948 case DRM_FORMAT_NV21:
4949 case DRM_FORMAT_NV16:
4950 case DRM_FORMAT_NV61:
4951 case DRM_FORMAT_NV24:
4952 case DRM_FORMAT_NV42:
4953 return plane ? 2 : 1;
4954 case DRM_FORMAT_YUV410:
4955 case DRM_FORMAT_YVU410:
4956 case DRM_FORMAT_YUV411:
4957 case DRM_FORMAT_YVU411:
4958 case DRM_FORMAT_YUV420:
4959 case DRM_FORMAT_YVU420:
4960 case DRM_FORMAT_YUV422:
4961 case DRM_FORMAT_YVU422:
4962 case DRM_FORMAT_YUV444:
4963 case DRM_FORMAT_YVU444:
4966 drm_fb_get_bpp_depth(format, &depth, &bpp);
4970 EXPORT_SYMBOL(drm_format_plane_cpp);
4973 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4974 * @format: pixel format (DRM_FORMAT_*)
4977 * The horizontal chroma subsampling factor for the
4978 * specified pixel format.
4980 int drm_format_horz_chroma_subsampling(uint32_t format)
4983 case DRM_FORMAT_YUV411:
4984 case DRM_FORMAT_YVU411:
4985 case DRM_FORMAT_YUV410:
4986 case DRM_FORMAT_YVU410:
4988 case DRM_FORMAT_YUYV:
4989 case DRM_FORMAT_YVYU:
4990 case DRM_FORMAT_UYVY:
4991 case DRM_FORMAT_VYUY:
4992 case DRM_FORMAT_NV12:
4993 case DRM_FORMAT_NV21:
4994 case DRM_FORMAT_NV16:
4995 case DRM_FORMAT_NV61:
4996 case DRM_FORMAT_YUV422:
4997 case DRM_FORMAT_YVU422:
4998 case DRM_FORMAT_YUV420:
4999 case DRM_FORMAT_YVU420:
5005 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5008 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5009 * @format: pixel format (DRM_FORMAT_*)
5012 * The vertical chroma subsampling factor for the
5013 * specified pixel format.
5015 int drm_format_vert_chroma_subsampling(uint32_t format)
5018 case DRM_FORMAT_YUV410:
5019 case DRM_FORMAT_YVU410:
5021 case DRM_FORMAT_YUV420:
5022 case DRM_FORMAT_YVU420:
5023 case DRM_FORMAT_NV12:
5024 case DRM_FORMAT_NV21:
5030 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5033 * drm_rotation_simplify() - Try to simplify the rotation
5034 * @rotation: Rotation to be simplified
5035 * @supported_rotations: Supported rotations
5037 * Attempt to simplify the rotation to a form that is supported.
5038 * Eg. if the hardware supports everything except DRM_REFLECT_X
5039 * one could call this function like this:
5041 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5042 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5043 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5045 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5046 * transforms the hardware supports, this function may not
5047 * be able to produce a supported transform, so the caller should
5048 * check the result afterwards.
5050 unsigned int drm_rotation_simplify(unsigned int rotation,
5051 unsigned int supported_rotations)
5053 if (rotation & ~supported_rotations) {
5054 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5055 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5060 EXPORT_SYMBOL(drm_rotation_simplify);
5063 * drm_mode_config_init - initialize DRM mode_configuration structure
5066 * Initialize @dev's mode_config structure, used for tracking the graphics
5067 * configuration of @dev.
5069 * Since this initializes the modeset locks, no locking is possible. Which is no
5070 * problem, since this should happen single threaded at init time. It is the
5071 * driver's problem to ensure this guarantee.
5074 void drm_mode_config_init(struct drm_device *dev)
5076 mutex_init(&dev->mode_config.mutex);
5077 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5078 mutex_init(&dev->mode_config.idr_mutex);
5079 mutex_init(&dev->mode_config.fb_lock);
5080 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5081 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5082 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5083 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
5084 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5085 INIT_LIST_HEAD(&dev->mode_config.property_list);
5086 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5087 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5088 idr_init(&dev->mode_config.crtc_idr);
5090 drm_modeset_lock_all(dev);
5091 drm_mode_create_standard_connector_properties(dev);
5092 drm_mode_create_standard_plane_properties(dev);
5093 drm_modeset_unlock_all(dev);
5095 /* Just to be sure */
5096 dev->mode_config.num_fb = 0;
5097 dev->mode_config.num_connector = 0;
5098 dev->mode_config.num_crtc = 0;
5099 dev->mode_config.num_encoder = 0;
5100 dev->mode_config.num_overlay_plane = 0;
5101 dev->mode_config.num_total_plane = 0;
5103 EXPORT_SYMBOL(drm_mode_config_init);
5106 * drm_mode_config_cleanup - free up DRM mode_config info
5109 * Free up all the connectors and CRTCs associated with this DRM device, then
5110 * free up the framebuffers and associated buffer objects.
5112 * Note that since this /should/ happen single-threaded at driver/device
5113 * teardown time, no locking is required. It's the driver's job to ensure that
5114 * this guarantee actually holds true.
5116 * FIXME: cleanup any dangling user buffer objects too
5118 void drm_mode_config_cleanup(struct drm_device *dev)
5120 struct drm_connector *connector, *ot;
5121 struct drm_crtc *crtc, *ct;
5122 struct drm_encoder *encoder, *enct;
5123 struct drm_bridge *bridge, *brt;
5124 struct drm_framebuffer *fb, *fbt;
5125 struct drm_property *property, *pt;
5126 struct drm_property_blob *blob, *bt;
5127 struct drm_plane *plane, *plt;
5129 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5131 encoder->funcs->destroy(encoder);
5134 list_for_each_entry_safe(bridge, brt,
5135 &dev->mode_config.bridge_list, head) {
5136 bridge->funcs->destroy(bridge);
5139 list_for_each_entry_safe(connector, ot,
5140 &dev->mode_config.connector_list, head) {
5141 connector->funcs->destroy(connector);
5144 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5146 drm_property_destroy(dev, property);
5149 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5151 drm_property_destroy_blob(dev, blob);
5155 * Single-threaded teardown context, so it's not required to grab the
5156 * fb_lock to protect against concurrent fb_list access. Contrary, it
5157 * would actually deadlock with the drm_framebuffer_cleanup function.
5159 * Also, if there are any framebuffers left, that's a driver leak now,
5160 * so politely WARN about this.
5162 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5163 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5164 drm_framebuffer_remove(fb);
5167 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5169 plane->funcs->destroy(plane);
5172 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5173 crtc->funcs->destroy(crtc);
5176 idr_destroy(&dev->mode_config.crtc_idr);
5177 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5179 EXPORT_SYMBOL(drm_mode_config_cleanup);
5181 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5182 unsigned int supported_rotations)
5184 static const struct drm_prop_enum_list props[] = {
5185 { DRM_ROTATE_0, "rotate-0" },
5186 { DRM_ROTATE_90, "rotate-90" },
5187 { DRM_ROTATE_180, "rotate-180" },
5188 { DRM_ROTATE_270, "rotate-270" },
5189 { DRM_REFLECT_X, "reflect-x" },
5190 { DRM_REFLECT_Y, "reflect-y" },
5193 return drm_property_create_bitmask(dev, 0, "rotation",
5194 props, ARRAY_SIZE(props),
5195 supported_rotations);
5197 EXPORT_SYMBOL(drm_mode_create_rotation_property);