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, int num_modes,
1392 struct drm_property *tv_selector;
1393 struct drm_property *tv_subconnector;
1396 if (dev->mode_config.tv_select_subconnector_property)
1400 * Basic connector properties
1402 tv_selector = drm_property_create_enum(dev, 0,
1403 "select subconnector",
1404 drm_tv_select_enum_list,
1405 ARRAY_SIZE(drm_tv_select_enum_list));
1406 dev->mode_config.tv_select_subconnector_property = tv_selector;
1409 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1411 drm_tv_subconnector_enum_list,
1412 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1413 dev->mode_config.tv_subconnector_property = tv_subconnector;
1416 * Other, TV specific properties: margins & TV modes.
1418 dev->mode_config.tv_left_margin_property =
1419 drm_property_create_range(dev, 0, "left margin", 0, 100);
1421 dev->mode_config.tv_right_margin_property =
1422 drm_property_create_range(dev, 0, "right margin", 0, 100);
1424 dev->mode_config.tv_top_margin_property =
1425 drm_property_create_range(dev, 0, "top margin", 0, 100);
1427 dev->mode_config.tv_bottom_margin_property =
1428 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1430 dev->mode_config.tv_mode_property =
1431 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1433 for (i = 0; i < num_modes; i++)
1434 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1437 dev->mode_config.tv_brightness_property =
1438 drm_property_create_range(dev, 0, "brightness", 0, 100);
1440 dev->mode_config.tv_contrast_property =
1441 drm_property_create_range(dev, 0, "contrast", 0, 100);
1443 dev->mode_config.tv_flicker_reduction_property =
1444 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1446 dev->mode_config.tv_overscan_property =
1447 drm_property_create_range(dev, 0, "overscan", 0, 100);
1449 dev->mode_config.tv_saturation_property =
1450 drm_property_create_range(dev, 0, "saturation", 0, 100);
1452 dev->mode_config.tv_hue_property =
1453 drm_property_create_range(dev, 0, "hue", 0, 100);
1457 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1460 * drm_mode_create_scaling_mode_property - create scaling mode property
1463 * Called by a driver the first time it's needed, must be attached to desired
1466 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1468 struct drm_property *scaling_mode;
1470 if (dev->mode_config.scaling_mode_property)
1474 drm_property_create_enum(dev, 0, "scaling mode",
1475 drm_scaling_mode_enum_list,
1476 ARRAY_SIZE(drm_scaling_mode_enum_list));
1478 dev->mode_config.scaling_mode_property = scaling_mode;
1482 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1485 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1488 * Called by a driver the first time it's needed, must be attached to desired
1492 * Zero on success, errno on failure.
1494 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1496 if (dev->mode_config.aspect_ratio_property)
1499 dev->mode_config.aspect_ratio_property =
1500 drm_property_create_enum(dev, 0, "aspect ratio",
1501 drm_aspect_ratio_enum_list,
1502 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1504 if (dev->mode_config.aspect_ratio_property == NULL)
1509 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1512 * drm_mode_create_dirty_property - create dirty property
1515 * Called by a driver the first time it's needed, must be attached to desired
1518 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1520 struct drm_property *dirty_info;
1522 if (dev->mode_config.dirty_info_property)
1526 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1528 drm_dirty_info_enum_list,
1529 ARRAY_SIZE(drm_dirty_info_enum_list));
1530 dev->mode_config.dirty_info_property = dirty_info;
1534 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1536 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1538 uint32_t total_objects = 0;
1540 total_objects += dev->mode_config.num_crtc;
1541 total_objects += dev->mode_config.num_connector;
1542 total_objects += dev->mode_config.num_encoder;
1543 total_objects += dev->mode_config.num_bridge;
1545 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1546 if (!group->id_list)
1549 group->num_crtcs = 0;
1550 group->num_connectors = 0;
1551 group->num_encoders = 0;
1552 group->num_bridges = 0;
1556 void drm_mode_group_destroy(struct drm_mode_group *group)
1558 kfree(group->id_list);
1559 group->id_list = NULL;
1563 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1564 * the drm core's responsibility to set up mode control groups.
1566 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1567 struct drm_mode_group *group)
1569 struct drm_crtc *crtc;
1570 struct drm_encoder *encoder;
1571 struct drm_connector *connector;
1572 struct drm_bridge *bridge;
1575 if ((ret = drm_mode_group_init(dev, group)))
1578 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1579 group->id_list[group->num_crtcs++] = crtc->base.id;
1581 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1582 group->id_list[group->num_crtcs + group->num_encoders++] =
1585 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1586 group->id_list[group->num_crtcs + group->num_encoders +
1587 group->num_connectors++] = connector->base.id;
1589 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1590 group->id_list[group->num_crtcs + group->num_encoders +
1591 group->num_connectors + group->num_bridges++] =
1596 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1598 void drm_reinit_primary_mode_group(struct drm_device *dev)
1600 drm_modeset_lock_all(dev);
1601 drm_mode_group_destroy(&dev->primary->mode_group);
1602 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1603 drm_modeset_unlock_all(dev);
1605 EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1608 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1609 * @out: drm_mode_modeinfo struct to return to the user
1610 * @in: drm_display_mode to use
1612 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1615 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1616 const struct drm_display_mode *in)
1618 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1619 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1620 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1621 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1622 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1623 "timing values too large for mode info\n");
1625 out->clock = in->clock;
1626 out->hdisplay = in->hdisplay;
1627 out->hsync_start = in->hsync_start;
1628 out->hsync_end = in->hsync_end;
1629 out->htotal = in->htotal;
1630 out->hskew = in->hskew;
1631 out->vdisplay = in->vdisplay;
1632 out->vsync_start = in->vsync_start;
1633 out->vsync_end = in->vsync_end;
1634 out->vtotal = in->vtotal;
1635 out->vscan = in->vscan;
1636 out->vrefresh = in->vrefresh;
1637 out->flags = in->flags;
1638 out->type = in->type;
1639 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1640 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1644 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1645 * @out: drm_display_mode to return to the user
1646 * @in: drm_mode_modeinfo to use
1648 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1652 * Zero on success, errno on failure.
1654 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1655 const struct drm_mode_modeinfo *in)
1657 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1660 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1663 out->clock = in->clock;
1664 out->hdisplay = in->hdisplay;
1665 out->hsync_start = in->hsync_start;
1666 out->hsync_end = in->hsync_end;
1667 out->htotal = in->htotal;
1668 out->hskew = in->hskew;
1669 out->vdisplay = in->vdisplay;
1670 out->vsync_start = in->vsync_start;
1671 out->vsync_end = in->vsync_end;
1672 out->vtotal = in->vtotal;
1673 out->vscan = in->vscan;
1674 out->vrefresh = in->vrefresh;
1675 out->flags = in->flags;
1676 out->type = in->type;
1677 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1678 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1684 * drm_mode_getresources - get graphics configuration
1685 * @dev: drm device for the ioctl
1686 * @data: data pointer for the ioctl
1687 * @file_priv: drm file for the ioctl call
1689 * Construct a set of configuration description structures and return
1690 * them to the user, including CRTC, connector and framebuffer configuration.
1692 * Called by the user via ioctl.
1695 * Zero on success, errno on failure.
1697 int drm_mode_getresources(struct drm_device *dev, void *data,
1698 struct drm_file *file_priv)
1700 struct drm_mode_card_res *card_res = data;
1701 struct list_head *lh;
1702 struct drm_framebuffer *fb;
1703 struct drm_connector *connector;
1704 struct drm_crtc *crtc;
1705 struct drm_encoder *encoder;
1707 int connector_count = 0;
1710 int encoder_count = 0;
1712 uint32_t __user *fb_id;
1713 uint32_t __user *crtc_id;
1714 uint32_t __user *connector_id;
1715 uint32_t __user *encoder_id;
1716 struct drm_mode_group *mode_group;
1718 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1722 mutex_lock(&file_priv->fbs_lock);
1724 * For the non-control nodes we need to limit the list of resources
1725 * by IDs in the group list for this node
1727 list_for_each(lh, &file_priv->fbs)
1730 /* handle this in 4 parts */
1732 if (card_res->count_fbs >= fb_count) {
1734 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1735 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1736 if (put_user(fb->base.id, fb_id + copied)) {
1737 mutex_unlock(&file_priv->fbs_lock);
1743 card_res->count_fbs = fb_count;
1744 mutex_unlock(&file_priv->fbs_lock);
1746 /* mode_config.mutex protects the connector list against e.g. DP MST
1747 * connector hot-adding. CRTC/Plane lists are invariant. */
1748 mutex_lock(&dev->mode_config.mutex);
1749 if (!drm_is_primary_client(file_priv)) {
1752 list_for_each(lh, &dev->mode_config.crtc_list)
1755 list_for_each(lh, &dev->mode_config.connector_list)
1758 list_for_each(lh, &dev->mode_config.encoder_list)
1762 mode_group = &file_priv->master->minor->mode_group;
1763 crtc_count = mode_group->num_crtcs;
1764 connector_count = mode_group->num_connectors;
1765 encoder_count = mode_group->num_encoders;
1768 card_res->max_height = dev->mode_config.max_height;
1769 card_res->min_height = dev->mode_config.min_height;
1770 card_res->max_width = dev->mode_config.max_width;
1771 card_res->min_width = dev->mode_config.min_width;
1774 if (card_res->count_crtcs >= crtc_count) {
1776 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1778 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1780 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1781 if (put_user(crtc->base.id, crtc_id + copied)) {
1788 for (i = 0; i < mode_group->num_crtcs; i++) {
1789 if (put_user(mode_group->id_list[i],
1790 crtc_id + copied)) {
1798 card_res->count_crtcs = crtc_count;
1801 if (card_res->count_encoders >= encoder_count) {
1803 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1805 list_for_each_entry(encoder,
1806 &dev->mode_config.encoder_list,
1808 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1810 if (put_user(encoder->base.id, encoder_id +
1818 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1819 if (put_user(mode_group->id_list[i],
1820 encoder_id + copied)) {
1829 card_res->count_encoders = encoder_count;
1832 if (card_res->count_connectors >= connector_count) {
1834 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1836 list_for_each_entry(connector,
1837 &dev->mode_config.connector_list,
1839 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1842 if (put_user(connector->base.id,
1843 connector_id + copied)) {
1850 int start = mode_group->num_crtcs +
1851 mode_group->num_encoders;
1852 for (i = start; i < start + mode_group->num_connectors; i++) {
1853 if (put_user(mode_group->id_list[i],
1854 connector_id + copied)) {
1862 card_res->count_connectors = connector_count;
1864 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1865 card_res->count_connectors, card_res->count_encoders);
1868 mutex_unlock(&dev->mode_config.mutex);
1873 * drm_mode_getcrtc - get CRTC configuration
1874 * @dev: drm device for the ioctl
1875 * @data: data pointer for the ioctl
1876 * @file_priv: drm file for the ioctl call
1878 * Construct a CRTC configuration structure to return to the user.
1880 * Called by the user via ioctl.
1883 * Zero on success, errno on failure.
1885 int drm_mode_getcrtc(struct drm_device *dev,
1886 void *data, struct drm_file *file_priv)
1888 struct drm_mode_crtc *crtc_resp = data;
1889 struct drm_crtc *crtc;
1892 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1895 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1899 drm_modeset_lock_crtc(crtc, crtc->primary);
1900 crtc_resp->x = crtc->x;
1901 crtc_resp->y = crtc->y;
1902 crtc_resp->gamma_size = crtc->gamma_size;
1903 if (crtc->primary->fb)
1904 crtc_resp->fb_id = crtc->primary->fb->base.id;
1906 crtc_resp->fb_id = 0;
1908 if (crtc->enabled) {
1910 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1911 crtc_resp->mode_valid = 1;
1914 crtc_resp->mode_valid = 0;
1916 drm_modeset_unlock_crtc(crtc);
1921 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1922 const struct drm_file *file_priv)
1925 * If user-space hasn't configured the driver to expose the stereo 3D
1926 * modes, don't expose them.
1928 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1935 * drm_mode_getconnector - get connector configuration
1936 * @dev: drm device for the ioctl
1937 * @data: data pointer for the ioctl
1938 * @file_priv: drm file for the ioctl call
1940 * Construct a connector configuration structure to return to the user.
1942 * Called by the user via ioctl.
1945 * Zero on success, errno on failure.
1947 int drm_mode_getconnector(struct drm_device *dev, void *data,
1948 struct drm_file *file_priv)
1950 struct drm_mode_get_connector *out_resp = data;
1951 struct drm_connector *connector;
1952 struct drm_display_mode *mode;
1954 int props_count = 0;
1955 int encoders_count = 0;
1959 struct drm_mode_modeinfo u_mode;
1960 struct drm_mode_modeinfo __user *mode_ptr;
1961 uint32_t __user *prop_ptr;
1962 uint64_t __user *prop_values;
1963 uint32_t __user *encoder_ptr;
1965 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1968 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1970 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1972 mutex_lock(&dev->mode_config.mutex);
1974 connector = drm_connector_find(dev, out_resp->connector_id);
1980 props_count = connector->properties.count;
1982 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1983 if (connector->encoder_ids[i] != 0) {
1988 if (out_resp->count_modes == 0) {
1989 connector->funcs->fill_modes(connector,
1990 dev->mode_config.max_width,
1991 dev->mode_config.max_height);
1994 /* delayed so we get modes regardless of pre-fill_modes state */
1995 list_for_each_entry(mode, &connector->modes, head)
1996 if (drm_mode_expose_to_userspace(mode, file_priv))
1999 out_resp->connector_id = connector->base.id;
2000 out_resp->connector_type = connector->connector_type;
2001 out_resp->connector_type_id = connector->connector_type_id;
2002 out_resp->mm_width = connector->display_info.width_mm;
2003 out_resp->mm_height = connector->display_info.height_mm;
2004 out_resp->subpixel = connector->display_info.subpixel_order;
2005 out_resp->connection = connector->status;
2006 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2007 if (connector->encoder)
2008 out_resp->encoder_id = connector->encoder->base.id;
2010 out_resp->encoder_id = 0;
2011 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2014 * This ioctl is called twice, once to determine how much space is
2015 * needed, and the 2nd time to fill it.
2017 if ((out_resp->count_modes >= mode_count) && mode_count) {
2019 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2020 list_for_each_entry(mode, &connector->modes, head) {
2021 if (!drm_mode_expose_to_userspace(mode, file_priv))
2024 drm_crtc_convert_to_umode(&u_mode, mode);
2025 if (copy_to_user(mode_ptr + copied,
2026 &u_mode, sizeof(u_mode))) {
2033 out_resp->count_modes = mode_count;
2035 if ((out_resp->count_props >= props_count) && props_count) {
2037 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
2038 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
2039 for (i = 0; i < connector->properties.count; i++) {
2040 if (put_user(connector->properties.ids[i],
2041 prop_ptr + copied)) {
2046 if (put_user(connector->properties.values[i],
2047 prop_values + copied)) {
2054 out_resp->count_props = props_count;
2056 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2058 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2059 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2060 if (connector->encoder_ids[i] != 0) {
2061 if (put_user(connector->encoder_ids[i],
2062 encoder_ptr + copied)) {
2070 out_resp->count_encoders = encoders_count;
2073 mutex_unlock(&dev->mode_config.mutex);
2079 * drm_mode_getencoder - get encoder configuration
2080 * @dev: drm device for the ioctl
2081 * @data: data pointer for the ioctl
2082 * @file_priv: drm file for the ioctl call
2084 * Construct a encoder configuration structure to return to the user.
2086 * Called by the user via ioctl.
2089 * Zero on success, errno on failure.
2091 int drm_mode_getencoder(struct drm_device *dev, void *data,
2092 struct drm_file *file_priv)
2094 struct drm_mode_get_encoder *enc_resp = data;
2095 struct drm_encoder *encoder;
2098 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2101 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2105 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2107 enc_resp->crtc_id = encoder->crtc->base.id;
2109 enc_resp->crtc_id = 0;
2110 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2112 enc_resp->encoder_type = encoder->encoder_type;
2113 enc_resp->encoder_id = encoder->base.id;
2114 enc_resp->possible_crtcs = encoder->possible_crtcs;
2115 enc_resp->possible_clones = encoder->possible_clones;
2121 * drm_mode_getplane_res - enumerate all plane resources
2124 * @file_priv: DRM file info
2126 * Construct a list of plane ids to return to the user.
2128 * Called by the user via ioctl.
2131 * Zero on success, errno on failure.
2133 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2134 struct drm_file *file_priv)
2136 struct drm_mode_get_plane_res *plane_resp = data;
2137 struct drm_mode_config *config;
2138 struct drm_plane *plane;
2139 uint32_t __user *plane_ptr;
2141 unsigned num_planes;
2143 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2146 config = &dev->mode_config;
2148 if (file_priv->universal_planes)
2149 num_planes = config->num_total_plane;
2151 num_planes = config->num_overlay_plane;
2154 * This ioctl is called twice, once to determine how much space is
2155 * needed, and the 2nd time to fill it.
2158 (plane_resp->count_planes >= num_planes)) {
2159 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2161 /* Plane lists are invariant, no locking needed. */
2162 list_for_each_entry(plane, &config->plane_list, head) {
2164 * Unless userspace set the 'universal planes'
2165 * capability bit, only advertise overlays.
2167 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2168 !file_priv->universal_planes)
2171 if (put_user(plane->base.id, plane_ptr + copied))
2176 plane_resp->count_planes = num_planes;
2182 * drm_mode_getplane - get plane configuration
2185 * @file_priv: DRM file info
2187 * Construct a plane configuration structure to return to the user.
2189 * Called by the user via ioctl.
2192 * Zero on success, errno on failure.
2194 int drm_mode_getplane(struct drm_device *dev, void *data,
2195 struct drm_file *file_priv)
2197 struct drm_mode_get_plane *plane_resp = data;
2198 struct drm_plane *plane;
2199 uint32_t __user *format_ptr;
2202 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2205 plane = drm_plane_find(dev, plane_resp->plane_id);
2209 drm_modeset_lock(&plane->mutex, NULL);
2211 plane_resp->crtc_id = plane->crtc->base.id;
2213 plane_resp->crtc_id = 0;
2216 plane_resp->fb_id = plane->fb->base.id;
2218 plane_resp->fb_id = 0;
2219 drm_modeset_unlock(&plane->mutex);
2221 plane_resp->plane_id = plane->base.id;
2222 plane_resp->possible_crtcs = plane->possible_crtcs;
2223 plane_resp->gamma_size = 0;
2226 * This ioctl is called twice, once to determine how much space is
2227 * needed, and the 2nd time to fill it.
2229 if (plane->format_count &&
2230 (plane_resp->count_format_types >= plane->format_count)) {
2231 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2232 if (copy_to_user(format_ptr,
2233 plane->format_types,
2234 sizeof(uint32_t) * plane->format_count)) {
2238 plane_resp->count_format_types = plane->format_count;
2244 * setplane_internal - setplane handler for internal callers
2246 * Note that we assume an extra reference has already been taken on fb. If the
2247 * update fails, this reference will be dropped before return; if it succeeds,
2248 * the previous framebuffer (if any) will be unreferenced instead.
2250 * src_{x,y,w,h} are provided in 16.16 fixed point format
2252 static int __setplane_internal(struct drm_plane *plane,
2253 struct drm_crtc *crtc,
2254 struct drm_framebuffer *fb,
2255 int32_t crtc_x, int32_t crtc_y,
2256 uint32_t crtc_w, uint32_t crtc_h,
2257 /* src_{x,y,w,h} values are 16.16 fixed point */
2258 uint32_t src_x, uint32_t src_y,
2259 uint32_t src_w, uint32_t src_h)
2262 unsigned int fb_width, fb_height;
2265 /* No fb means shut it down */
2267 plane->old_fb = plane->fb;
2268 ret = plane->funcs->disable_plane(plane);
2273 plane->old_fb = NULL;
2278 /* Check whether this plane is usable on this CRTC */
2279 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2280 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2285 /* Check whether this plane supports the fb pixel format. */
2286 for (i = 0; i < plane->format_count; i++)
2287 if (fb->pixel_format == plane->format_types[i])
2289 if (i == plane->format_count) {
2290 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2291 drm_get_format_name(fb->pixel_format));
2296 fb_width = fb->width << 16;
2297 fb_height = fb->height << 16;
2299 /* Make sure source coordinates are inside the fb. */
2300 if (src_w > fb_width ||
2301 src_x > fb_width - src_w ||
2302 src_h > fb_height ||
2303 src_y > fb_height - src_h) {
2304 DRM_DEBUG_KMS("Invalid source coordinates "
2305 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2306 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2307 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2308 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2309 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2314 plane->old_fb = plane->fb;
2315 ret = plane->funcs->update_plane(plane, crtc, fb,
2316 crtc_x, crtc_y, crtc_w, crtc_h,
2317 src_x, src_y, src_w, src_h);
2323 plane->old_fb = NULL;
2328 drm_framebuffer_unreference(fb);
2330 drm_framebuffer_unreference(plane->old_fb);
2331 plane->old_fb = NULL;
2336 static int setplane_internal(struct drm_plane *plane,
2337 struct drm_crtc *crtc,
2338 struct drm_framebuffer *fb,
2339 int32_t crtc_x, int32_t crtc_y,
2340 uint32_t crtc_w, uint32_t crtc_h,
2341 /* src_{x,y,w,h} values are 16.16 fixed point */
2342 uint32_t src_x, uint32_t src_y,
2343 uint32_t src_w, uint32_t src_h)
2347 drm_modeset_lock_all(plane->dev);
2348 ret = __setplane_internal(plane, crtc, fb,
2349 crtc_x, crtc_y, crtc_w, crtc_h,
2350 src_x, src_y, src_w, src_h);
2351 drm_modeset_unlock_all(plane->dev);
2357 * drm_mode_setplane - configure a plane's configuration
2359 * @data: ioctl data*
2360 * @file_priv: DRM file info
2362 * Set plane configuration, including placement, fb, scaling, and other factors.
2363 * Or pass a NULL fb to disable (planes may be disabled without providing a
2367 * Zero on success, errno on failure.
2369 int drm_mode_setplane(struct drm_device *dev, void *data,
2370 struct drm_file *file_priv)
2372 struct drm_mode_set_plane *plane_req = data;
2373 struct drm_mode_object *obj;
2374 struct drm_plane *plane;
2375 struct drm_crtc *crtc = NULL;
2376 struct drm_framebuffer *fb = NULL;
2378 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2381 /* Give drivers some help against integer overflows */
2382 if (plane_req->crtc_w > INT_MAX ||
2383 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2384 plane_req->crtc_h > INT_MAX ||
2385 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2386 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2387 plane_req->crtc_w, plane_req->crtc_h,
2388 plane_req->crtc_x, plane_req->crtc_y);
2393 * First, find the plane, crtc, and fb objects. If not available,
2394 * we don't bother to call the driver.
2396 obj = drm_mode_object_find(dev, plane_req->plane_id,
2397 DRM_MODE_OBJECT_PLANE);
2399 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2400 plane_req->plane_id);
2403 plane = obj_to_plane(obj);
2405 if (plane_req->fb_id) {
2406 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2408 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2413 obj = drm_mode_object_find(dev, plane_req->crtc_id,
2414 DRM_MODE_OBJECT_CRTC);
2416 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2417 plane_req->crtc_id);
2420 crtc = obj_to_crtc(obj);
2424 * setplane_internal will take care of deref'ing either the old or new
2425 * framebuffer depending on success.
2427 return setplane_internal(plane, crtc, fb,
2428 plane_req->crtc_x, plane_req->crtc_y,
2429 plane_req->crtc_w, plane_req->crtc_h,
2430 plane_req->src_x, plane_req->src_y,
2431 plane_req->src_w, plane_req->src_h);
2435 * drm_mode_set_config_internal - helper to call ->set_config
2436 * @set: modeset config to set
2438 * This is a little helper to wrap internal calls to the ->set_config driver
2439 * interface. The only thing it adds is correct refcounting dance.
2442 * Zero on success, errno on failure.
2444 int drm_mode_set_config_internal(struct drm_mode_set *set)
2446 struct drm_crtc *crtc = set->crtc;
2447 struct drm_framebuffer *fb;
2448 struct drm_crtc *tmp;
2452 * NOTE: ->set_config can also disable other crtcs (if we steal all
2453 * connectors from it), hence we need to refcount the fbs across all
2454 * crtcs. Atomic modeset will have saner semantics ...
2456 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2457 tmp->primary->old_fb = tmp->primary->fb;
2461 ret = crtc->funcs->set_config(set);
2463 crtc->primary->crtc = crtc;
2464 crtc->primary->fb = fb;
2467 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2468 if (tmp->primary->fb)
2469 drm_framebuffer_reference(tmp->primary->fb);
2470 if (tmp->primary->old_fb)
2471 drm_framebuffer_unreference(tmp->primary->old_fb);
2472 tmp->primary->old_fb = NULL;
2477 EXPORT_SYMBOL(drm_mode_set_config_internal);
2480 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2482 * @crtc: CRTC that framebuffer will be displayed on
2485 * @mode: mode that framebuffer will be displayed under
2486 * @fb: framebuffer to check size of
2488 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2490 const struct drm_display_mode *mode,
2491 const struct drm_framebuffer *fb)
2494 int hdisplay, vdisplay;
2496 hdisplay = mode->hdisplay;
2497 vdisplay = mode->vdisplay;
2499 if (drm_mode_is_stereo(mode)) {
2500 struct drm_display_mode adjusted = *mode;
2502 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2503 hdisplay = adjusted.crtc_hdisplay;
2504 vdisplay = adjusted.crtc_vdisplay;
2507 if (crtc->invert_dimensions)
2508 swap(hdisplay, vdisplay);
2510 if (hdisplay > fb->width ||
2511 vdisplay > fb->height ||
2512 x > fb->width - hdisplay ||
2513 y > fb->height - vdisplay) {
2514 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2515 fb->width, fb->height, hdisplay, vdisplay, x, y,
2516 crtc->invert_dimensions ? " (inverted)" : "");
2522 EXPORT_SYMBOL(drm_crtc_check_viewport);
2525 * drm_mode_setcrtc - set CRTC configuration
2526 * @dev: drm device for the ioctl
2527 * @data: data pointer for the ioctl
2528 * @file_priv: drm file for the ioctl call
2530 * Build a new CRTC configuration based on user request.
2532 * Called by the user via ioctl.
2535 * Zero on success, errno on failure.
2537 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2538 struct drm_file *file_priv)
2540 struct drm_mode_config *config = &dev->mode_config;
2541 struct drm_mode_crtc *crtc_req = data;
2542 struct drm_crtc *crtc;
2543 struct drm_connector **connector_set = NULL, *connector;
2544 struct drm_framebuffer *fb = NULL;
2545 struct drm_display_mode *mode = NULL;
2546 struct drm_mode_set set;
2547 uint32_t __user *set_connectors_ptr;
2551 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2554 /* For some reason crtc x/y offsets are signed internally. */
2555 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2558 drm_modeset_lock_all(dev);
2559 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2561 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2565 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2567 if (crtc_req->mode_valid) {
2568 /* If we have a mode we need a framebuffer. */
2569 /* If we pass -1, set the mode with the currently bound fb */
2570 if (crtc_req->fb_id == -1) {
2571 if (!crtc->primary->fb) {
2572 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2576 fb = crtc->primary->fb;
2577 /* Make refcounting symmetric with the lookup path. */
2578 drm_framebuffer_reference(fb);
2580 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2582 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2589 mode = drm_mode_create(dev);
2595 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2597 DRM_DEBUG_KMS("Invalid mode\n");
2601 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2603 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2610 if (crtc_req->count_connectors == 0 && mode) {
2611 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2616 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2617 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2618 crtc_req->count_connectors);
2623 if (crtc_req->count_connectors > 0) {
2626 /* Avoid unbounded kernel memory allocation */
2627 if (crtc_req->count_connectors > config->num_connector) {
2632 connector_set = kmalloc(crtc_req->count_connectors *
2633 sizeof(struct drm_connector *),
2635 if (!connector_set) {
2640 for (i = 0; i < crtc_req->count_connectors; i++) {
2641 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2642 if (get_user(out_id, &set_connectors_ptr[i])) {
2647 connector = drm_connector_find(dev, out_id);
2649 DRM_DEBUG_KMS("Connector id %d unknown\n",
2654 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2658 connector_set[i] = connector;
2663 set.x = crtc_req->x;
2664 set.y = crtc_req->y;
2666 set.connectors = connector_set;
2667 set.num_connectors = crtc_req->count_connectors;
2669 ret = drm_mode_set_config_internal(&set);
2673 drm_framebuffer_unreference(fb);
2675 kfree(connector_set);
2676 drm_mode_destroy(dev, mode);
2677 drm_modeset_unlock_all(dev);
2682 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2683 * universal plane handler call
2684 * @crtc: crtc to update cursor for
2685 * @req: data pointer for the ioctl
2686 * @file_priv: drm file for the ioctl call
2688 * Legacy cursor ioctl's work directly with driver buffer handles. To
2689 * translate legacy ioctl calls into universal plane handler calls, we need to
2690 * wrap the native buffer handle in a drm_framebuffer.
2692 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2693 * buffer with a pitch of 4*width; the universal plane interface should be used
2694 * directly in cases where the hardware can support other buffer settings and
2695 * userspace wants to make use of these capabilities.
2698 * Zero on success, errno on failure.
2700 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2701 struct drm_mode_cursor2 *req,
2702 struct drm_file *file_priv)
2704 struct drm_device *dev = crtc->dev;
2705 struct drm_framebuffer *fb = NULL;
2706 struct drm_mode_fb_cmd2 fbreq = {
2707 .width = req->width,
2708 .height = req->height,
2709 .pixel_format = DRM_FORMAT_ARGB8888,
2710 .pitches = { req->width * 4 },
2711 .handles = { req->handle },
2713 int32_t crtc_x, crtc_y;
2714 uint32_t crtc_w = 0, crtc_h = 0;
2715 uint32_t src_w = 0, src_h = 0;
2718 BUG_ON(!crtc->cursor);
2719 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2722 * Obtain fb we'll be using (either new or existing) and take an extra
2723 * reference to it if fb != null. setplane will take care of dropping
2724 * the reference if the plane update fails.
2726 if (req->flags & DRM_MODE_CURSOR_BO) {
2728 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2730 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2734 drm_framebuffer_reference(fb);
2739 fb = crtc->cursor->fb;
2741 drm_framebuffer_reference(fb);
2744 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2748 crtc_x = crtc->cursor_x;
2749 crtc_y = crtc->cursor_y;
2754 crtc_h = fb->height;
2755 src_w = fb->width << 16;
2756 src_h = fb->height << 16;
2760 * setplane_internal will take care of deref'ing either the old or new
2761 * framebuffer depending on success.
2763 ret = __setplane_internal(crtc->cursor, crtc, fb,
2764 crtc_x, crtc_y, crtc_w, crtc_h,
2765 0, 0, src_w, src_h);
2767 /* Update successful; save new cursor position, if necessary */
2768 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2769 crtc->cursor_x = req->x;
2770 crtc->cursor_y = req->y;
2776 static int drm_mode_cursor_common(struct drm_device *dev,
2777 struct drm_mode_cursor2 *req,
2778 struct drm_file *file_priv)
2780 struct drm_crtc *crtc;
2783 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2786 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2789 crtc = drm_crtc_find(dev, req->crtc_id);
2791 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2796 * If this crtc has a universal cursor plane, call that plane's update
2797 * handler rather than using legacy cursor handlers.
2799 drm_modeset_lock_crtc(crtc, crtc->cursor);
2801 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2805 if (req->flags & DRM_MODE_CURSOR_BO) {
2806 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2810 /* Turns off the cursor if handle is 0 */
2811 if (crtc->funcs->cursor_set2)
2812 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2813 req->width, req->height, req->hot_x, req->hot_y);
2815 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2816 req->width, req->height);
2819 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2820 if (crtc->funcs->cursor_move) {
2821 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2828 drm_modeset_unlock_crtc(crtc);
2836 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2837 * @dev: drm device for the ioctl
2838 * @data: data pointer for the ioctl
2839 * @file_priv: drm file for the ioctl call
2841 * Set the cursor configuration based on user request.
2843 * Called by the user via ioctl.
2846 * Zero on success, errno on failure.
2848 int drm_mode_cursor_ioctl(struct drm_device *dev,
2849 void *data, struct drm_file *file_priv)
2851 struct drm_mode_cursor *req = data;
2852 struct drm_mode_cursor2 new_req;
2854 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2855 new_req.hot_x = new_req.hot_y = 0;
2857 return drm_mode_cursor_common(dev, &new_req, file_priv);
2861 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2862 * @dev: drm device for the ioctl
2863 * @data: data pointer for the ioctl
2864 * @file_priv: drm file for the ioctl call
2866 * Set the cursor configuration based on user request. This implements the 2nd
2867 * version of the cursor ioctl, which allows userspace to additionally specify
2868 * the hotspot of the pointer.
2870 * Called by the user via ioctl.
2873 * Zero on success, errno on failure.
2875 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2876 void *data, struct drm_file *file_priv)
2878 struct drm_mode_cursor2 *req = data;
2879 return drm_mode_cursor_common(dev, req, file_priv);
2883 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2884 * @bpp: bits per pixels
2885 * @depth: bit depth per pixel
2887 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2888 * Useful in fbdev emulation code, since that deals in those values.
2890 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2896 fmt = DRM_FORMAT_C8;
2900 fmt = DRM_FORMAT_XRGB1555;
2902 fmt = DRM_FORMAT_RGB565;
2905 fmt = DRM_FORMAT_RGB888;
2909 fmt = DRM_FORMAT_XRGB8888;
2910 else if (depth == 30)
2911 fmt = DRM_FORMAT_XRGB2101010;
2913 fmt = DRM_FORMAT_ARGB8888;
2916 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2917 fmt = DRM_FORMAT_XRGB8888;
2923 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2926 * drm_mode_addfb - add an FB to the graphics configuration
2927 * @dev: drm device for the ioctl
2928 * @data: data pointer for the ioctl
2929 * @file_priv: drm file for the ioctl call
2931 * Add a new FB to the specified CRTC, given a user request. This is the
2932 * original addfb ioctl which only supported RGB formats.
2934 * Called by the user via ioctl.
2937 * Zero on success, errno on failure.
2939 int drm_mode_addfb(struct drm_device *dev,
2940 void *data, struct drm_file *file_priv)
2942 struct drm_mode_fb_cmd *or = data;
2943 struct drm_mode_fb_cmd2 r = {};
2946 /* convert to new format and call new ioctl */
2947 r.fb_id = or->fb_id;
2948 r.width = or->width;
2949 r.height = or->height;
2950 r.pitches[0] = or->pitch;
2951 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2952 r.handles[0] = or->handle;
2954 ret = drm_mode_addfb2(dev, &r, file_priv);
2958 or->fb_id = r.fb_id;
2963 static int format_check(const struct drm_mode_fb_cmd2 *r)
2965 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2969 case DRM_FORMAT_RGB332:
2970 case DRM_FORMAT_BGR233:
2971 case DRM_FORMAT_XRGB4444:
2972 case DRM_FORMAT_XBGR4444:
2973 case DRM_FORMAT_RGBX4444:
2974 case DRM_FORMAT_BGRX4444:
2975 case DRM_FORMAT_ARGB4444:
2976 case DRM_FORMAT_ABGR4444:
2977 case DRM_FORMAT_RGBA4444:
2978 case DRM_FORMAT_BGRA4444:
2979 case DRM_FORMAT_XRGB1555:
2980 case DRM_FORMAT_XBGR1555:
2981 case DRM_FORMAT_RGBX5551:
2982 case DRM_FORMAT_BGRX5551:
2983 case DRM_FORMAT_ARGB1555:
2984 case DRM_FORMAT_ABGR1555:
2985 case DRM_FORMAT_RGBA5551:
2986 case DRM_FORMAT_BGRA5551:
2987 case DRM_FORMAT_RGB565:
2988 case DRM_FORMAT_BGR565:
2989 case DRM_FORMAT_RGB888:
2990 case DRM_FORMAT_BGR888:
2991 case DRM_FORMAT_XRGB8888:
2992 case DRM_FORMAT_XBGR8888:
2993 case DRM_FORMAT_RGBX8888:
2994 case DRM_FORMAT_BGRX8888:
2995 case DRM_FORMAT_ARGB8888:
2996 case DRM_FORMAT_ABGR8888:
2997 case DRM_FORMAT_RGBA8888:
2998 case DRM_FORMAT_BGRA8888:
2999 case DRM_FORMAT_XRGB2101010:
3000 case DRM_FORMAT_XBGR2101010:
3001 case DRM_FORMAT_RGBX1010102:
3002 case DRM_FORMAT_BGRX1010102:
3003 case DRM_FORMAT_ARGB2101010:
3004 case DRM_FORMAT_ABGR2101010:
3005 case DRM_FORMAT_RGBA1010102:
3006 case DRM_FORMAT_BGRA1010102:
3007 case DRM_FORMAT_YUYV:
3008 case DRM_FORMAT_YVYU:
3009 case DRM_FORMAT_UYVY:
3010 case DRM_FORMAT_VYUY:
3011 case DRM_FORMAT_AYUV:
3012 case DRM_FORMAT_NV12:
3013 case DRM_FORMAT_NV21:
3014 case DRM_FORMAT_NV16:
3015 case DRM_FORMAT_NV61:
3016 case DRM_FORMAT_NV24:
3017 case DRM_FORMAT_NV42:
3018 case DRM_FORMAT_YUV410:
3019 case DRM_FORMAT_YVU410:
3020 case DRM_FORMAT_YUV411:
3021 case DRM_FORMAT_YVU411:
3022 case DRM_FORMAT_YUV420:
3023 case DRM_FORMAT_YVU420:
3024 case DRM_FORMAT_YUV422:
3025 case DRM_FORMAT_YVU422:
3026 case DRM_FORMAT_YUV444:
3027 case DRM_FORMAT_YVU444:
3030 DRM_DEBUG_KMS("invalid pixel format %s\n",
3031 drm_get_format_name(r->pixel_format));
3036 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3038 int ret, hsub, vsub, num_planes, i;
3040 ret = format_check(r);
3042 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3043 drm_get_format_name(r->pixel_format));
3047 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3048 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3049 num_planes = drm_format_num_planes(r->pixel_format);
3051 if (r->width == 0 || r->width % hsub) {
3052 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3056 if (r->height == 0 || r->height % vsub) {
3057 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3061 for (i = 0; i < num_planes; i++) {
3062 unsigned int width = r->width / (i != 0 ? hsub : 1);
3063 unsigned int height = r->height / (i != 0 ? vsub : 1);
3064 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3066 if (!r->handles[i]) {
3067 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3071 if ((uint64_t) width * cpp > UINT_MAX)
3074 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3077 if (r->pitches[i] < width * cpp) {
3078 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3086 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3087 struct drm_mode_fb_cmd2 *r,
3088 struct drm_file *file_priv)
3090 struct drm_mode_config *config = &dev->mode_config;
3091 struct drm_framebuffer *fb;
3094 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3095 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3096 return ERR_PTR(-EINVAL);
3099 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3100 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3101 r->width, config->min_width, config->max_width);
3102 return ERR_PTR(-EINVAL);
3104 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3105 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3106 r->height, config->min_height, config->max_height);
3107 return ERR_PTR(-EINVAL);
3110 ret = framebuffer_check(r);
3112 return ERR_PTR(ret);
3114 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3116 DRM_DEBUG_KMS("could not create framebuffer\n");
3120 mutex_lock(&file_priv->fbs_lock);
3121 r->fb_id = fb->base.id;
3122 list_add(&fb->filp_head, &file_priv->fbs);
3123 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3124 mutex_unlock(&file_priv->fbs_lock);
3130 * drm_mode_addfb2 - add an FB to the graphics configuration
3131 * @dev: drm device for the ioctl
3132 * @data: data pointer for the ioctl
3133 * @file_priv: drm file for the ioctl call
3135 * Add a new FB to the specified CRTC, given a user request with format. This is
3136 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3137 * and uses fourcc codes as pixel format specifiers.
3139 * Called by the user via ioctl.
3142 * Zero on success, errno on failure.
3144 int drm_mode_addfb2(struct drm_device *dev,
3145 void *data, struct drm_file *file_priv)
3147 struct drm_framebuffer *fb;
3149 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3152 fb = add_framebuffer_internal(dev, data, file_priv);
3160 * drm_mode_rmfb - remove an FB from the configuration
3161 * @dev: drm device for the ioctl
3162 * @data: data pointer for the ioctl
3163 * @file_priv: drm file for the ioctl call
3165 * Remove the FB specified by the user.
3167 * Called by the user via ioctl.
3170 * Zero on success, errno on failure.
3172 int drm_mode_rmfb(struct drm_device *dev,
3173 void *data, struct drm_file *file_priv)
3175 struct drm_framebuffer *fb = NULL;
3176 struct drm_framebuffer *fbl = NULL;
3177 uint32_t *id = data;
3180 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3183 mutex_lock(&file_priv->fbs_lock);
3184 mutex_lock(&dev->mode_config.fb_lock);
3185 fb = __drm_framebuffer_lookup(dev, *id);
3189 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3195 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3196 __drm_framebuffer_unregister(dev, fb);
3198 list_del_init(&fb->filp_head);
3199 mutex_unlock(&dev->mode_config.fb_lock);
3200 mutex_unlock(&file_priv->fbs_lock);
3202 drm_framebuffer_remove(fb);
3207 mutex_unlock(&dev->mode_config.fb_lock);
3208 mutex_unlock(&file_priv->fbs_lock);
3214 * drm_mode_getfb - get FB info
3215 * @dev: drm device for the ioctl
3216 * @data: data pointer for the ioctl
3217 * @file_priv: drm file for the ioctl call
3219 * Lookup the FB given its ID and return info about it.
3221 * Called by the user via ioctl.
3224 * Zero on success, errno on failure.
3226 int drm_mode_getfb(struct drm_device *dev,
3227 void *data, struct drm_file *file_priv)
3229 struct drm_mode_fb_cmd *r = data;
3230 struct drm_framebuffer *fb;
3233 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3236 fb = drm_framebuffer_lookup(dev, r->fb_id);
3240 r->height = fb->height;
3241 r->width = fb->width;
3242 r->depth = fb->depth;
3243 r->bpp = fb->bits_per_pixel;
3244 r->pitch = fb->pitches[0];
3245 if (fb->funcs->create_handle) {
3246 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3247 drm_is_control_client(file_priv)) {
3248 ret = fb->funcs->create_handle(fb, file_priv,
3251 /* GET_FB() is an unprivileged ioctl so we must not
3252 * return a buffer-handle to non-master processes! For
3253 * backwards-compatibility reasons, we cannot make
3254 * GET_FB() privileged, so just return an invalid handle
3255 * for non-masters. */
3263 drm_framebuffer_unreference(fb);
3269 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3270 * @dev: drm device for the ioctl
3271 * @data: data pointer for the ioctl
3272 * @file_priv: drm file for the ioctl call
3274 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3275 * rectangle list. Generic userspace which does frontbuffer rendering must call
3276 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3277 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3279 * Modesetting drivers which always update the frontbuffer do not need to
3280 * implement the corresponding ->dirty framebuffer callback.
3282 * Called by the user via ioctl.
3285 * Zero on success, errno on failure.
3287 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3288 void *data, struct drm_file *file_priv)
3290 struct drm_clip_rect __user *clips_ptr;
3291 struct drm_clip_rect *clips = NULL;
3292 struct drm_mode_fb_dirty_cmd *r = data;
3293 struct drm_framebuffer *fb;
3298 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3301 fb = drm_framebuffer_lookup(dev, r->fb_id);
3305 num_clips = r->num_clips;
3306 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3308 if (!num_clips != !clips_ptr) {
3313 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3315 /* If userspace annotates copy, clips must come in pairs */
3316 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3321 if (num_clips && clips_ptr) {
3322 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3326 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3332 ret = copy_from_user(clips, clips_ptr,
3333 num_clips * sizeof(*clips));
3340 if (fb->funcs->dirty) {
3341 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3350 drm_framebuffer_unreference(fb);
3357 * drm_fb_release - remove and free the FBs on this file
3358 * @priv: drm file for the ioctl
3360 * Destroy all the FBs associated with @filp.
3362 * Called by the user via ioctl.
3365 * Zero on success, errno on failure.
3367 void drm_fb_release(struct drm_file *priv)
3369 struct drm_device *dev = priv->minor->dev;
3370 struct drm_framebuffer *fb, *tfb;
3373 * When the file gets released that means no one else can access the fb
3374 * list any more, so no need to grab fpriv->fbs_lock. And we need to to
3375 * avoid upsetting lockdep since the universal cursor code adds a
3376 * framebuffer while holding mutex locks.
3378 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3379 * locks is impossible here since no one else but this function can get
3382 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3384 mutex_lock(&dev->mode_config.fb_lock);
3385 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3386 __drm_framebuffer_unregister(dev, fb);
3387 mutex_unlock(&dev->mode_config.fb_lock);
3389 list_del_init(&fb->filp_head);
3391 /* This will also drop the fpriv->fbs reference. */
3392 drm_framebuffer_remove(fb);
3397 * drm_property_create - create a new property type
3399 * @flags: flags specifying the property type
3400 * @name: name of the property
3401 * @num_values: number of pre-defined values
3403 * This creates a new generic drm property which can then be attached to a drm
3404 * object with drm_object_attach_property. The returned property object must be
3405 * freed with drm_property_destroy.
3407 * Note that the DRM core keeps a per-device list of properties and that, if
3408 * drm_mode_config_cleanup() is called, it will destroy all properties created
3412 * A pointer to the newly created property on success, NULL on failure.
3414 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3415 const char *name, int num_values)
3417 struct drm_property *property = NULL;
3420 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3424 property->dev = dev;
3427 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3428 if (!property->values)
3432 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3436 property->flags = flags;
3437 property->num_values = num_values;
3438 INIT_LIST_HEAD(&property->enum_blob_list);
3441 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3442 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3445 list_add_tail(&property->head, &dev->mode_config.property_list);
3447 WARN_ON(!drm_property_type_valid(property));
3451 kfree(property->values);
3455 EXPORT_SYMBOL(drm_property_create);
3458 * drm_property_create_enum - create a new enumeration property type
3460 * @flags: flags specifying the property type
3461 * @name: name of the property
3462 * @props: enumeration lists with property values
3463 * @num_values: number of pre-defined values
3465 * This creates a new generic drm property which can then be attached to a drm
3466 * object with drm_object_attach_property. The returned property object must be
3467 * freed with drm_property_destroy.
3469 * Userspace is only allowed to set one of the predefined values for enumeration
3473 * A pointer to the newly created property on success, NULL on failure.
3475 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3477 const struct drm_prop_enum_list *props,
3480 struct drm_property *property;
3483 flags |= DRM_MODE_PROP_ENUM;
3485 property = drm_property_create(dev, flags, name, num_values);
3489 for (i = 0; i < num_values; i++) {
3490 ret = drm_property_add_enum(property, i,
3494 drm_property_destroy(dev, property);
3501 EXPORT_SYMBOL(drm_property_create_enum);
3504 * drm_property_create_bitmask - create a new bitmask property type
3506 * @flags: flags specifying the property type
3507 * @name: name of the property
3508 * @props: enumeration lists with property bitflags
3509 * @num_props: size of the @props array
3510 * @supported_bits: bitmask of all supported enumeration values
3512 * This creates a new bitmask drm property which can then be attached to a drm
3513 * object with drm_object_attach_property. The returned property object must be
3514 * freed with drm_property_destroy.
3516 * Compared to plain enumeration properties userspace is allowed to set any
3517 * or'ed together combination of the predefined property bitflag values
3520 * A pointer to the newly created property on success, NULL on failure.
3522 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3523 int flags, const char *name,
3524 const struct drm_prop_enum_list *props,
3526 uint64_t supported_bits)
3528 struct drm_property *property;
3529 int i, ret, index = 0;
3530 int num_values = hweight64(supported_bits);
3532 flags |= DRM_MODE_PROP_BITMASK;
3534 property = drm_property_create(dev, flags, name, num_values);
3537 for (i = 0; i < num_props; i++) {
3538 if (!(supported_bits & (1ULL << props[i].type)))
3541 if (WARN_ON(index >= num_values)) {
3542 drm_property_destroy(dev, property);
3546 ret = drm_property_add_enum(property, index++,
3550 drm_property_destroy(dev, property);
3557 EXPORT_SYMBOL(drm_property_create_bitmask);
3559 static struct drm_property *property_create_range(struct drm_device *dev,
3560 int flags, const char *name,
3561 uint64_t min, uint64_t max)
3563 struct drm_property *property;
3565 property = drm_property_create(dev, flags, name, 2);
3569 property->values[0] = min;
3570 property->values[1] = max;
3576 * drm_property_create_range - create a new ranged property type
3578 * @flags: flags specifying the property type
3579 * @name: name of the property
3580 * @min: minimum value of the property
3581 * @max: maximum value of the property
3583 * This creates a new generic drm property which can then be attached to a drm
3584 * object with drm_object_attach_property. The returned property object must be
3585 * freed with drm_property_destroy.
3587 * Userspace is allowed to set any integer value in the (min, max) range
3591 * A pointer to the newly created property on success, NULL on failure.
3593 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3595 uint64_t min, uint64_t max)
3597 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3600 EXPORT_SYMBOL(drm_property_create_range);
3602 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3603 int flags, const char *name,
3604 int64_t min, int64_t max)
3606 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3607 name, I642U64(min), I642U64(max));
3609 EXPORT_SYMBOL(drm_property_create_signed_range);
3611 struct drm_property *drm_property_create_object(struct drm_device *dev,
3612 int flags, const char *name, uint32_t type)
3614 struct drm_property *property;
3616 flags |= DRM_MODE_PROP_OBJECT;
3618 property = drm_property_create(dev, flags, name, 1);
3622 property->values[0] = type;
3626 EXPORT_SYMBOL(drm_property_create_object);
3629 * drm_property_add_enum - add a possible value to an enumeration property
3630 * @property: enumeration property to change
3631 * @index: index of the new enumeration
3632 * @value: value of the new enumeration
3633 * @name: symbolic name of the new enumeration
3635 * This functions adds enumerations to a property.
3637 * It's use is deprecated, drivers should use one of the more specific helpers
3638 * to directly create the property with all enumerations already attached.
3641 * Zero on success, error code on failure.
3643 int drm_property_add_enum(struct drm_property *property, int index,
3644 uint64_t value, const char *name)
3646 struct drm_property_enum *prop_enum;
3648 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3649 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3653 * Bitmask enum properties have the additional constraint of values
3656 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3660 if (!list_empty(&property->enum_blob_list)) {
3661 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3662 if (prop_enum->value == value) {
3663 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3664 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3670 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3674 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3675 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3676 prop_enum->value = value;
3678 property->values[index] = value;
3679 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3682 EXPORT_SYMBOL(drm_property_add_enum);
3685 * drm_property_destroy - destroy a drm property
3687 * @property: property to destry
3689 * This function frees a property including any attached resources like
3690 * enumeration values.
3692 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3694 struct drm_property_enum *prop_enum, *pt;
3696 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3697 list_del(&prop_enum->head);
3701 if (property->num_values)
3702 kfree(property->values);
3703 drm_mode_object_put(dev, &property->base);
3704 list_del(&property->head);
3707 EXPORT_SYMBOL(drm_property_destroy);
3710 * drm_object_attach_property - attach a property to a modeset object
3711 * @obj: drm modeset object
3712 * @property: property to attach
3713 * @init_val: initial value of the property
3715 * This attaches the given property to the modeset object with the given initial
3716 * value. Currently this function cannot fail since the properties are stored in
3717 * a statically sized array.
3719 void drm_object_attach_property(struct drm_mode_object *obj,
3720 struct drm_property *property,
3723 int count = obj->properties->count;
3725 if (count == DRM_OBJECT_MAX_PROPERTY) {
3726 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3727 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3728 "you see this message on the same object type.\n",
3733 obj->properties->ids[count] = property->base.id;
3734 obj->properties->values[count] = init_val;
3735 obj->properties->count++;
3737 EXPORT_SYMBOL(drm_object_attach_property);
3740 * drm_object_property_set_value - set the value of a property
3741 * @obj: drm mode object to set property value for
3742 * @property: property to set
3743 * @val: value the property should be set to
3745 * This functions sets a given property on a given object. This function only
3746 * changes the software state of the property, it does not call into the
3747 * driver's ->set_property callback.
3750 * Zero on success, error code on failure.
3752 int drm_object_property_set_value(struct drm_mode_object *obj,
3753 struct drm_property *property, uint64_t val)
3757 for (i = 0; i < obj->properties->count; i++) {
3758 if (obj->properties->ids[i] == property->base.id) {
3759 obj->properties->values[i] = val;
3766 EXPORT_SYMBOL(drm_object_property_set_value);
3769 * drm_object_property_get_value - retrieve the value of a property
3770 * @obj: drm mode object to get property value from
3771 * @property: property to retrieve
3772 * @val: storage for the property value
3774 * This function retrieves the softare state of the given property for the given
3775 * property. Since there is no driver callback to retrieve the current property
3776 * value this might be out of sync with the hardware, depending upon the driver
3780 * Zero on success, error code on failure.
3782 int drm_object_property_get_value(struct drm_mode_object *obj,
3783 struct drm_property *property, uint64_t *val)
3787 for (i = 0; i < obj->properties->count; i++) {
3788 if (obj->properties->ids[i] == property->base.id) {
3789 *val = obj->properties->values[i];
3796 EXPORT_SYMBOL(drm_object_property_get_value);
3799 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3802 * @file_priv: DRM file info
3804 * This function retrieves the current value for an connectors's property.
3806 * Called by the user via ioctl.
3809 * Zero on success, errno on failure.
3811 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3812 void *data, struct drm_file *file_priv)
3814 struct drm_mode_get_property *out_resp = data;
3815 struct drm_property *property;
3818 int value_count = 0;
3821 struct drm_property_enum *prop_enum;
3822 struct drm_mode_property_enum __user *enum_ptr;
3823 struct drm_property_blob *prop_blob;
3824 uint32_t __user *blob_id_ptr;
3825 uint64_t __user *values_ptr;
3826 uint32_t __user *blob_length_ptr;
3828 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3831 drm_modeset_lock_all(dev);
3832 property = drm_property_find(dev, out_resp->prop_id);
3838 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3839 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3840 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3842 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3843 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3847 value_count = property->num_values;
3849 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3850 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3851 out_resp->flags = property->flags;
3853 if ((out_resp->count_values >= value_count) && value_count) {
3854 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3855 for (i = 0; i < value_count; i++) {
3856 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3862 out_resp->count_values = value_count;
3864 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3865 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3866 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3868 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3869 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3871 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3876 if (copy_to_user(&enum_ptr[copied].name,
3877 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3884 out_resp->count_enum_blobs = enum_count;
3887 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3888 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3890 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3891 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3893 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3894 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3899 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3907 out_resp->count_enum_blobs = blob_count;
3910 drm_modeset_unlock_all(dev);
3914 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3917 struct drm_property_blob *blob;
3920 if (!length || !data)
3923 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3927 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3933 blob->length = length;
3935 memcpy(blob->data, data, length);
3937 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3941 static void drm_property_destroy_blob(struct drm_device *dev,
3942 struct drm_property_blob *blob)
3944 drm_mode_object_put(dev, &blob->base);
3945 list_del(&blob->head);
3950 * drm_mode_getblob_ioctl - get the contents of a blob property value
3953 * @file_priv: DRM file info
3955 * This function retrieves the contents of a blob property. The value stored in
3956 * an object's blob property is just a normal modeset object id.
3958 * Called by the user via ioctl.
3961 * Zero on success, errno on failure.
3963 int drm_mode_getblob_ioctl(struct drm_device *dev,
3964 void *data, struct drm_file *file_priv)
3966 struct drm_mode_get_blob *out_resp = data;
3967 struct drm_property_blob *blob;
3969 void __user *blob_ptr;
3971 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3974 drm_modeset_lock_all(dev);
3975 blob = drm_property_blob_find(dev, out_resp->blob_id);
3981 if (out_resp->length == blob->length) {
3982 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3983 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3988 out_resp->length = blob->length;
3991 drm_modeset_unlock_all(dev);
3996 * drm_mode_connector_set_path_property - set tile property on connector
3997 * @connector: connector to set property on.
3998 * @path: path to use for property.
4000 * This creates a property to expose to userspace to specify a
4001 * connector path. This is mainly used for DisplayPort MST where
4002 * connectors have a topology and we want to allow userspace to give
4003 * them more meaningful names.
4006 * Zero on success, errno on failure.
4008 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4011 struct drm_device *dev = connector->dev;
4013 size = strlen(path) + 1;
4015 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4017 if (!connector->path_blob_ptr)
4020 ret = drm_object_property_set_value(&connector->base,
4021 dev->mode_config.path_property,
4022 connector->path_blob_ptr->base.id);
4025 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4028 * drm_mode_connector_update_edid_property - update the edid property of a connector
4029 * @connector: drm connector
4030 * @edid: new value of the edid property
4032 * This function creates a new blob modeset object and assigns its id to the
4033 * connector's edid property.
4036 * Zero on success, errno on failure.
4038 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4041 struct drm_device *dev = connector->dev;
4044 /* ignore requests to set edid when overridden */
4045 if (connector->override_edid)
4048 if (connector->edid_blob_ptr)
4049 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4051 /* Delete edid, when there is none. */
4053 connector->edid_blob_ptr = NULL;
4054 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4058 size = EDID_LENGTH * (1 + edid->extensions);
4059 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4061 if (!connector->edid_blob_ptr)
4064 ret = drm_object_property_set_value(&connector->base,
4065 dev->mode_config.edid_property,
4066 connector->edid_blob_ptr->base.id);
4070 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4072 static bool drm_property_change_is_valid(struct drm_property *property,
4075 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4078 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4079 if (value < property->values[0] || value > property->values[1])
4082 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4083 int64_t svalue = U642I64(value);
4084 if (svalue < U642I64(property->values[0]) ||
4085 svalue > U642I64(property->values[1]))
4088 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4090 uint64_t valid_mask = 0;
4091 for (i = 0; i < property->num_values; i++)
4092 valid_mask |= (1ULL << property->values[i]);
4093 return !(value & ~valid_mask);
4094 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4095 /* Only the driver knows */
4097 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4098 struct drm_mode_object *obj;
4099 /* a zero value for an object property translates to null: */
4103 * NOTE: use _object_find() directly to bypass restriction on
4104 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4105 * object this could race against object finalization, so it
4106 * simply tells us that the object *was* valid. Which is good
4109 obj = _object_find(property->dev, value, property->values[0]);
4113 for (i = 0; i < property->num_values; i++)
4114 if (property->values[i] == value)
4121 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4124 * @file_priv: DRM file info
4126 * This function sets the current value for a connectors's property. It also
4127 * calls into a driver's ->set_property callback to update the hardware state
4129 * Called by the user via ioctl.
4132 * Zero on success, errno on failure.
4134 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4135 void *data, struct drm_file *file_priv)
4137 struct drm_mode_connector_set_property *conn_set_prop = data;
4138 struct drm_mode_obj_set_property obj_set_prop = {
4139 .value = conn_set_prop->value,
4140 .prop_id = conn_set_prop->prop_id,
4141 .obj_id = conn_set_prop->connector_id,
4142 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4145 /* It does all the locking and checking we need */
4146 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4149 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4150 struct drm_property *property,
4154 struct drm_connector *connector = obj_to_connector(obj);
4156 /* Do DPMS ourselves */
4157 if (property == connector->dev->mode_config.dpms_property) {
4158 if (connector->funcs->dpms)
4159 (*connector->funcs->dpms)(connector, (int)value);
4161 } else if (connector->funcs->set_property)
4162 ret = connector->funcs->set_property(connector, property, value);
4164 /* store the property value if successful */
4166 drm_object_property_set_value(&connector->base, property, value);
4170 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4171 struct drm_property *property,
4175 struct drm_crtc *crtc = obj_to_crtc(obj);
4177 if (crtc->funcs->set_property)
4178 ret = crtc->funcs->set_property(crtc, property, value);
4180 drm_object_property_set_value(obj, property, value);
4186 * drm_mode_plane_set_obj_prop - set the value of a property
4187 * @plane: drm plane object to set property value for
4188 * @property: property to set
4189 * @value: value the property should be set to
4191 * This functions sets a given property on a given plane object. This function
4192 * calls the driver's ->set_property callback and changes the software state of
4193 * the property if the callback succeeds.
4196 * Zero on success, error code on failure.
4198 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4199 struct drm_property *property,
4203 struct drm_mode_object *obj = &plane->base;
4205 if (plane->funcs->set_property)
4206 ret = plane->funcs->set_property(plane, property, value);
4208 drm_object_property_set_value(obj, property, value);
4212 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4215 * drm_mode_getproperty_ioctl - get the current value of a object's property
4218 * @file_priv: DRM file info
4220 * This function retrieves the current value for an object's property. Compared
4221 * to the connector specific ioctl this one is extended to also work on crtc and
4224 * Called by the user via ioctl.
4227 * Zero on success, errno on failure.
4229 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4230 struct drm_file *file_priv)
4232 struct drm_mode_obj_get_properties *arg = data;
4233 struct drm_mode_object *obj;
4237 int props_count = 0;
4238 uint32_t __user *props_ptr;
4239 uint64_t __user *prop_values_ptr;
4241 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4244 drm_modeset_lock_all(dev);
4246 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4251 if (!obj->properties) {
4256 props_count = obj->properties->count;
4258 /* This ioctl is called twice, once to determine how much space is
4259 * needed, and the 2nd time to fill it. */
4260 if ((arg->count_props >= props_count) && props_count) {
4262 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
4263 prop_values_ptr = (uint64_t __user *)(unsigned long)
4264 (arg->prop_values_ptr);
4265 for (i = 0; i < props_count; i++) {
4266 if (put_user(obj->properties->ids[i],
4267 props_ptr + copied)) {
4271 if (put_user(obj->properties->values[i],
4272 prop_values_ptr + copied)) {
4279 arg->count_props = props_count;
4281 drm_modeset_unlock_all(dev);
4286 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4289 * @file_priv: DRM file info
4291 * This function sets the current value for an object's property. It also calls
4292 * into a driver's ->set_property callback to update the hardware state.
4293 * Compared to the connector specific ioctl this one is extended to also work on
4294 * crtc and plane objects.
4296 * Called by the user via ioctl.
4299 * Zero on success, errno on failure.
4301 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4302 struct drm_file *file_priv)
4304 struct drm_mode_obj_set_property *arg = data;
4305 struct drm_mode_object *arg_obj;
4306 struct drm_mode_object *prop_obj;
4307 struct drm_property *property;
4311 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4314 drm_modeset_lock_all(dev);
4316 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4321 if (!arg_obj->properties)
4324 for (i = 0; i < arg_obj->properties->count; i++)
4325 if (arg_obj->properties->ids[i] == arg->prop_id)
4328 if (i == arg_obj->properties->count)
4331 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4332 DRM_MODE_OBJECT_PROPERTY);
4337 property = obj_to_property(prop_obj);
4339 if (!drm_property_change_is_valid(property, arg->value))
4342 switch (arg_obj->type) {
4343 case DRM_MODE_OBJECT_CONNECTOR:
4344 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4347 case DRM_MODE_OBJECT_CRTC:
4348 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4350 case DRM_MODE_OBJECT_PLANE:
4351 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4352 property, arg->value);
4357 drm_modeset_unlock_all(dev);
4362 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4363 * @connector: connector to attach
4364 * @encoder: encoder to attach @connector to
4366 * This function links up a connector to an encoder. Note that the routing
4367 * restrictions between encoders and crtcs are exposed to userspace through the
4368 * possible_clones and possible_crtcs bitmasks.
4371 * Zero on success, errno on failure.
4373 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4374 struct drm_encoder *encoder)
4378 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4379 if (connector->encoder_ids[i] == 0) {
4380 connector->encoder_ids[i] = encoder->base.id;
4386 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4389 * drm_mode_crtc_set_gamma_size - set the gamma table size
4390 * @crtc: CRTC to set the gamma table size for
4391 * @gamma_size: size of the gamma table
4393 * Drivers which support gamma tables should set this to the supported gamma
4394 * table size when initializing the CRTC. Currently the drm core only supports a
4395 * fixed gamma table size.
4398 * Zero on success, errno on failure.
4400 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4403 crtc->gamma_size = gamma_size;
4405 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4406 if (!crtc->gamma_store) {
4407 crtc->gamma_size = 0;
4413 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4416 * drm_mode_gamma_set_ioctl - set the gamma table
4419 * @file_priv: DRM file info
4421 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4422 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4424 * Called by the user via ioctl.
4427 * Zero on success, errno on failure.
4429 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4430 void *data, struct drm_file *file_priv)
4432 struct drm_mode_crtc_lut *crtc_lut = data;
4433 struct drm_crtc *crtc;
4434 void *r_base, *g_base, *b_base;
4438 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4441 drm_modeset_lock_all(dev);
4442 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4448 if (crtc->funcs->gamma_set == NULL) {
4453 /* memcpy into gamma store */
4454 if (crtc_lut->gamma_size != crtc->gamma_size) {
4459 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4460 r_base = crtc->gamma_store;
4461 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4466 g_base = r_base + size;
4467 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4472 b_base = g_base + size;
4473 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4478 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4481 drm_modeset_unlock_all(dev);
4487 * drm_mode_gamma_get_ioctl - get the gamma table
4490 * @file_priv: DRM file info
4492 * Copy the current gamma table into the storage provided. This also provides
4493 * the gamma table size the driver expects, which can be used to size the
4494 * allocated storage.
4496 * Called by the user via ioctl.
4499 * Zero on success, errno on failure.
4501 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4502 void *data, struct drm_file *file_priv)
4504 struct drm_mode_crtc_lut *crtc_lut = data;
4505 struct drm_crtc *crtc;
4506 void *r_base, *g_base, *b_base;
4510 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4513 drm_modeset_lock_all(dev);
4514 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4520 /* memcpy into gamma store */
4521 if (crtc_lut->gamma_size != crtc->gamma_size) {
4526 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4527 r_base = crtc->gamma_store;
4528 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4533 g_base = r_base + size;
4534 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4539 b_base = g_base + size;
4540 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4545 drm_modeset_unlock_all(dev);
4550 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4553 * @file_priv: DRM file info
4555 * This schedules an asynchronous update on a given CRTC, called page flip.
4556 * Optionally a drm event is generated to signal the completion of the event.
4557 * Generic drivers cannot assume that a pageflip with changed framebuffer
4558 * properties (including driver specific metadata like tiling layout) will work,
4559 * but some drivers support e.g. pixel format changes through the pageflip
4562 * Called by the user via ioctl.
4565 * Zero on success, errno on failure.
4567 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4568 void *data, struct drm_file *file_priv)
4570 struct drm_mode_crtc_page_flip *page_flip = data;
4571 struct drm_crtc *crtc;
4572 struct drm_framebuffer *fb = NULL;
4573 struct drm_pending_vblank_event *e = NULL;
4574 unsigned long flags;
4577 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4578 page_flip->reserved != 0)
4581 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4584 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4588 drm_modeset_lock_crtc(crtc, crtc->primary);
4589 if (crtc->primary->fb == NULL) {
4590 /* The framebuffer is currently unbound, presumably
4591 * due to a hotplug event, that userspace has not
4598 if (crtc->funcs->page_flip == NULL)
4601 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4607 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4611 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4612 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4617 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4619 spin_lock_irqsave(&dev->event_lock, flags);
4620 if (file_priv->event_space < sizeof e->event) {
4621 spin_unlock_irqrestore(&dev->event_lock, flags);
4624 file_priv->event_space -= sizeof e->event;
4625 spin_unlock_irqrestore(&dev->event_lock, flags);
4627 e = kzalloc(sizeof *e, GFP_KERNEL);
4629 spin_lock_irqsave(&dev->event_lock, flags);
4630 file_priv->event_space += sizeof e->event;
4631 spin_unlock_irqrestore(&dev->event_lock, flags);
4635 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4636 e->event.base.length = sizeof e->event;
4637 e->event.user_data = page_flip->user_data;
4638 e->base.event = &e->event.base;
4639 e->base.file_priv = file_priv;
4641 (void (*) (struct drm_pending_event *)) kfree;
4644 crtc->primary->old_fb = crtc->primary->fb;
4645 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4647 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4648 spin_lock_irqsave(&dev->event_lock, flags);
4649 file_priv->event_space += sizeof e->event;
4650 spin_unlock_irqrestore(&dev->event_lock, flags);
4653 /* Keep the old fb, don't unref it. */
4654 crtc->primary->old_fb = NULL;
4657 * Warn if the driver hasn't properly updated the crtc->fb
4658 * field to reflect that the new framebuffer is now used.
4659 * Failing to do so will screw with the reference counting
4662 WARN_ON(crtc->primary->fb != fb);
4663 /* Unref only the old framebuffer. */
4669 drm_framebuffer_unreference(fb);
4670 if (crtc->primary->old_fb)
4671 drm_framebuffer_unreference(crtc->primary->old_fb);
4672 crtc->primary->old_fb = NULL;
4673 drm_modeset_unlock_crtc(crtc);
4679 * drm_mode_config_reset - call ->reset callbacks
4682 * This functions calls all the crtc's, encoder's and connector's ->reset
4683 * callback. Drivers can use this in e.g. their driver load or resume code to
4684 * reset hardware and software state.
4686 void drm_mode_config_reset(struct drm_device *dev)
4688 struct drm_crtc *crtc;
4689 struct drm_plane *plane;
4690 struct drm_encoder *encoder;
4691 struct drm_connector *connector;
4693 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4694 if (plane->funcs->reset)
4695 plane->funcs->reset(plane);
4697 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4698 if (crtc->funcs->reset)
4699 crtc->funcs->reset(crtc);
4701 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4702 if (encoder->funcs->reset)
4703 encoder->funcs->reset(encoder);
4705 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4706 connector->status = connector_status_unknown;
4708 if (connector->funcs->reset)
4709 connector->funcs->reset(connector);
4712 EXPORT_SYMBOL(drm_mode_config_reset);
4715 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4718 * @file_priv: DRM file info
4720 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4721 * TTM or something else entirely) and returns the resulting buffer handle. This
4722 * handle can then be wrapped up into a framebuffer modeset object.
4724 * Note that userspace is not allowed to use such objects for render
4725 * acceleration - drivers must create their own private ioctls for such a use
4728 * Called by the user via ioctl.
4731 * Zero on success, errno on failure.
4733 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4734 void *data, struct drm_file *file_priv)
4736 struct drm_mode_create_dumb *args = data;
4737 u32 cpp, stride, size;
4739 if (!dev->driver->dumb_create)
4741 if (!args->width || !args->height || !args->bpp)
4744 /* overflow checks for 32bit size calculations */
4745 /* NOTE: DIV_ROUND_UP() can overflow */
4746 cpp = DIV_ROUND_UP(args->bpp, 8);
4747 if (!cpp || cpp > 0xffffffffU / args->width)
4749 stride = cpp * args->width;
4750 if (args->height > 0xffffffffU / stride)
4753 /* test for wrap-around */
4754 size = args->height * stride;
4755 if (PAGE_ALIGN(size) == 0)
4758 return dev->driver->dumb_create(file_priv, dev, args);
4762 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4765 * @file_priv: DRM file info
4767 * Allocate an offset in the drm device node's address space to be able to
4768 * memory map a dumb buffer.
4770 * Called by the user via ioctl.
4773 * Zero on success, errno on failure.
4775 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4776 void *data, struct drm_file *file_priv)
4778 struct drm_mode_map_dumb *args = data;
4780 /* call driver ioctl to get mmap offset */
4781 if (!dev->driver->dumb_map_offset)
4784 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4788 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4791 * @file_priv: DRM file info
4793 * This destroys the userspace handle for the given dumb backing storage buffer.
4794 * Since buffer objects must be reference counted in the kernel a buffer object
4795 * won't be immediately freed if a framebuffer modeset object still uses it.
4797 * Called by the user via ioctl.
4800 * Zero on success, errno on failure.
4802 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4803 void *data, struct drm_file *file_priv)
4805 struct drm_mode_destroy_dumb *args = data;
4807 if (!dev->driver->dumb_destroy)
4810 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4814 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4815 * @format: pixel format (DRM_FORMAT_*)
4816 * @depth: storage for the depth value
4817 * @bpp: storage for the bpp value
4819 * This only supports RGB formats here for compat with code that doesn't use
4820 * pixel formats directly yet.
4822 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4827 case DRM_FORMAT_RGB332:
4828 case DRM_FORMAT_BGR233:
4832 case DRM_FORMAT_XRGB1555:
4833 case DRM_FORMAT_XBGR1555:
4834 case DRM_FORMAT_RGBX5551:
4835 case DRM_FORMAT_BGRX5551:
4836 case DRM_FORMAT_ARGB1555:
4837 case DRM_FORMAT_ABGR1555:
4838 case DRM_FORMAT_RGBA5551:
4839 case DRM_FORMAT_BGRA5551:
4843 case DRM_FORMAT_RGB565:
4844 case DRM_FORMAT_BGR565:
4848 case DRM_FORMAT_RGB888:
4849 case DRM_FORMAT_BGR888:
4853 case DRM_FORMAT_XRGB8888:
4854 case DRM_FORMAT_XBGR8888:
4855 case DRM_FORMAT_RGBX8888:
4856 case DRM_FORMAT_BGRX8888:
4860 case DRM_FORMAT_XRGB2101010:
4861 case DRM_FORMAT_XBGR2101010:
4862 case DRM_FORMAT_RGBX1010102:
4863 case DRM_FORMAT_BGRX1010102:
4864 case DRM_FORMAT_ARGB2101010:
4865 case DRM_FORMAT_ABGR2101010:
4866 case DRM_FORMAT_RGBA1010102:
4867 case DRM_FORMAT_BGRA1010102:
4871 case DRM_FORMAT_ARGB8888:
4872 case DRM_FORMAT_ABGR8888:
4873 case DRM_FORMAT_RGBA8888:
4874 case DRM_FORMAT_BGRA8888:
4879 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4880 drm_get_format_name(format));
4886 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4889 * drm_format_num_planes - get the number of planes for format
4890 * @format: pixel format (DRM_FORMAT_*)
4893 * The number of planes used by the specified pixel format.
4895 int drm_format_num_planes(uint32_t format)
4898 case DRM_FORMAT_YUV410:
4899 case DRM_FORMAT_YVU410:
4900 case DRM_FORMAT_YUV411:
4901 case DRM_FORMAT_YVU411:
4902 case DRM_FORMAT_YUV420:
4903 case DRM_FORMAT_YVU420:
4904 case DRM_FORMAT_YUV422:
4905 case DRM_FORMAT_YVU422:
4906 case DRM_FORMAT_YUV444:
4907 case DRM_FORMAT_YVU444:
4909 case DRM_FORMAT_NV12:
4910 case DRM_FORMAT_NV21:
4911 case DRM_FORMAT_NV16:
4912 case DRM_FORMAT_NV61:
4913 case DRM_FORMAT_NV24:
4914 case DRM_FORMAT_NV42:
4920 EXPORT_SYMBOL(drm_format_num_planes);
4923 * drm_format_plane_cpp - determine the bytes per pixel value
4924 * @format: pixel format (DRM_FORMAT_*)
4925 * @plane: plane index
4928 * The bytes per pixel value for the specified plane.
4930 int drm_format_plane_cpp(uint32_t format, int plane)
4935 if (plane >= drm_format_num_planes(format))
4939 case DRM_FORMAT_YUYV:
4940 case DRM_FORMAT_YVYU:
4941 case DRM_FORMAT_UYVY:
4942 case DRM_FORMAT_VYUY:
4944 case DRM_FORMAT_NV12:
4945 case DRM_FORMAT_NV21:
4946 case DRM_FORMAT_NV16:
4947 case DRM_FORMAT_NV61:
4948 case DRM_FORMAT_NV24:
4949 case DRM_FORMAT_NV42:
4950 return plane ? 2 : 1;
4951 case DRM_FORMAT_YUV410:
4952 case DRM_FORMAT_YVU410:
4953 case DRM_FORMAT_YUV411:
4954 case DRM_FORMAT_YVU411:
4955 case DRM_FORMAT_YUV420:
4956 case DRM_FORMAT_YVU420:
4957 case DRM_FORMAT_YUV422:
4958 case DRM_FORMAT_YVU422:
4959 case DRM_FORMAT_YUV444:
4960 case DRM_FORMAT_YVU444:
4963 drm_fb_get_bpp_depth(format, &depth, &bpp);
4967 EXPORT_SYMBOL(drm_format_plane_cpp);
4970 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4971 * @format: pixel format (DRM_FORMAT_*)
4974 * The horizontal chroma subsampling factor for the
4975 * specified pixel format.
4977 int drm_format_horz_chroma_subsampling(uint32_t format)
4980 case DRM_FORMAT_YUV411:
4981 case DRM_FORMAT_YVU411:
4982 case DRM_FORMAT_YUV410:
4983 case DRM_FORMAT_YVU410:
4985 case DRM_FORMAT_YUYV:
4986 case DRM_FORMAT_YVYU:
4987 case DRM_FORMAT_UYVY:
4988 case DRM_FORMAT_VYUY:
4989 case DRM_FORMAT_NV12:
4990 case DRM_FORMAT_NV21:
4991 case DRM_FORMAT_NV16:
4992 case DRM_FORMAT_NV61:
4993 case DRM_FORMAT_YUV422:
4994 case DRM_FORMAT_YVU422:
4995 case DRM_FORMAT_YUV420:
4996 case DRM_FORMAT_YVU420:
5002 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5005 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5006 * @format: pixel format (DRM_FORMAT_*)
5009 * The vertical chroma subsampling factor for the
5010 * specified pixel format.
5012 int drm_format_vert_chroma_subsampling(uint32_t format)
5015 case DRM_FORMAT_YUV410:
5016 case DRM_FORMAT_YVU410:
5018 case DRM_FORMAT_YUV420:
5019 case DRM_FORMAT_YVU420:
5020 case DRM_FORMAT_NV12:
5021 case DRM_FORMAT_NV21:
5027 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5030 * drm_rotation_simplify() - Try to simplify the rotation
5031 * @rotation: Rotation to be simplified
5032 * @supported_rotations: Supported rotations
5034 * Attempt to simplify the rotation to a form that is supported.
5035 * Eg. if the hardware supports everything except DRM_REFLECT_X
5036 * one could call this function like this:
5038 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5039 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5040 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5042 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5043 * transforms the hardware supports, this function may not
5044 * be able to produce a supported transform, so the caller should
5045 * check the result afterwards.
5047 unsigned int drm_rotation_simplify(unsigned int rotation,
5048 unsigned int supported_rotations)
5050 if (rotation & ~supported_rotations) {
5051 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5052 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5057 EXPORT_SYMBOL(drm_rotation_simplify);
5060 * drm_mode_config_init - initialize DRM mode_configuration structure
5063 * Initialize @dev's mode_config structure, used for tracking the graphics
5064 * configuration of @dev.
5066 * Since this initializes the modeset locks, no locking is possible. Which is no
5067 * problem, since this should happen single threaded at init time. It is the
5068 * driver's problem to ensure this guarantee.
5071 void drm_mode_config_init(struct drm_device *dev)
5073 mutex_init(&dev->mode_config.mutex);
5074 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5075 mutex_init(&dev->mode_config.idr_mutex);
5076 mutex_init(&dev->mode_config.fb_lock);
5077 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5078 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5079 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5080 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
5081 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5082 INIT_LIST_HEAD(&dev->mode_config.property_list);
5083 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5084 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5085 idr_init(&dev->mode_config.crtc_idr);
5087 drm_modeset_lock_all(dev);
5088 drm_mode_create_standard_connector_properties(dev);
5089 drm_mode_create_standard_plane_properties(dev);
5090 drm_modeset_unlock_all(dev);
5092 /* Just to be sure */
5093 dev->mode_config.num_fb = 0;
5094 dev->mode_config.num_connector = 0;
5095 dev->mode_config.num_crtc = 0;
5096 dev->mode_config.num_encoder = 0;
5097 dev->mode_config.num_overlay_plane = 0;
5098 dev->mode_config.num_total_plane = 0;
5100 EXPORT_SYMBOL(drm_mode_config_init);
5103 * drm_mode_config_cleanup - free up DRM mode_config info
5106 * Free up all the connectors and CRTCs associated with this DRM device, then
5107 * free up the framebuffers and associated buffer objects.
5109 * Note that since this /should/ happen single-threaded at driver/device
5110 * teardown time, no locking is required. It's the driver's job to ensure that
5111 * this guarantee actually holds true.
5113 * FIXME: cleanup any dangling user buffer objects too
5115 void drm_mode_config_cleanup(struct drm_device *dev)
5117 struct drm_connector *connector, *ot;
5118 struct drm_crtc *crtc, *ct;
5119 struct drm_encoder *encoder, *enct;
5120 struct drm_bridge *bridge, *brt;
5121 struct drm_framebuffer *fb, *fbt;
5122 struct drm_property *property, *pt;
5123 struct drm_property_blob *blob, *bt;
5124 struct drm_plane *plane, *plt;
5126 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5128 encoder->funcs->destroy(encoder);
5131 list_for_each_entry_safe(bridge, brt,
5132 &dev->mode_config.bridge_list, head) {
5133 bridge->funcs->destroy(bridge);
5136 list_for_each_entry_safe(connector, ot,
5137 &dev->mode_config.connector_list, head) {
5138 connector->funcs->destroy(connector);
5141 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5143 drm_property_destroy(dev, property);
5146 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5148 drm_property_destroy_blob(dev, blob);
5152 * Single-threaded teardown context, so it's not required to grab the
5153 * fb_lock to protect against concurrent fb_list access. Contrary, it
5154 * would actually deadlock with the drm_framebuffer_cleanup function.
5156 * Also, if there are any framebuffers left, that's a driver leak now,
5157 * so politely WARN about this.
5159 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5160 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5161 drm_framebuffer_remove(fb);
5164 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5166 plane->funcs->destroy(plane);
5169 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5170 crtc->funcs->destroy(crtc);
5173 idr_destroy(&dev->mode_config.crtc_idr);
5174 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5176 EXPORT_SYMBOL(drm_mode_config_cleanup);
5178 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5179 unsigned int supported_rotations)
5181 static const struct drm_prop_enum_list props[] = {
5182 { DRM_ROTATE_0, "rotate-0" },
5183 { DRM_ROTATE_90, "rotate-90" },
5184 { DRM_ROTATE_180, "rotate-180" },
5185 { DRM_ROTATE_270, "rotate-270" },
5186 { DRM_REFLECT_X, "reflect-x" },
5187 { DRM_REFLECT_Y, "reflect-y" },
5190 return drm_property_create_bitmask(dev, 0, "rotation",
5191 props, ARRAY_SIZE(props),
5192 supported_rotations);
5194 EXPORT_SYMBOL(drm_mode_create_rotation_property);