2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_fourcc.h>
40 #include <drm/drm_modeset_lock.h>
42 #include "drm_crtc_internal.h"
43 #include "drm_internal.h"
45 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
46 struct drm_mode_fb_cmd2 *r,
47 struct drm_file *file_priv);
49 /* Avoid boilerplate. I'm tired of typing. */
50 #define DRM_ENUM_NAME_FN(fnname, list) \
51 const char *fnname(int val) \
54 for (i = 0; i < ARRAY_SIZE(list); i++) { \
55 if (list[i].type == val) \
56 return list[i].name; \
64 static const struct drm_prop_enum_list drm_dpms_enum_list[] =
65 { { DRM_MODE_DPMS_ON, "On" },
66 { DRM_MODE_DPMS_STANDBY, "Standby" },
67 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
68 { DRM_MODE_DPMS_OFF, "Off" }
71 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
73 static const struct drm_prop_enum_list drm_plane_type_enum_list[] =
75 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
76 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
77 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
83 static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
85 { DRM_MODE_SCALE_NONE, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
87 { DRM_MODE_SCALE_CENTER, "Center" },
88 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
102 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
103 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
104 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
107 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
109 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
111 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
112 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
113 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
116 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
117 drm_dvi_i_subconnector_enum_list)
119 static const struct drm_prop_enum_list drm_tv_select_enum_list[] =
121 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
125 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
128 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
130 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
132 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
133 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
134 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
135 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
136 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
139 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
140 drm_tv_subconnector_enum_list)
142 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
143 { DRM_MODE_DIRTY_OFF, "Off" },
144 { DRM_MODE_DIRTY_ON, "On" },
145 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
148 struct drm_conn_prop_enum_list {
155 * Connector and encoder types.
157 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
158 { { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
159 { DRM_MODE_CONNECTOR_VGA, "VGA" },
160 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
161 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
162 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
163 { DRM_MODE_CONNECTOR_Composite, "Composite" },
164 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
165 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
166 { DRM_MODE_CONNECTOR_Component, "Component" },
167 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
168 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
169 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
170 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
171 { DRM_MODE_CONNECTOR_TV, "TV" },
172 { DRM_MODE_CONNECTOR_eDP, "eDP" },
173 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
174 { DRM_MODE_CONNECTOR_DSI, "DSI" },
177 static const struct drm_prop_enum_list drm_encoder_enum_list[] =
178 { { DRM_MODE_ENCODER_NONE, "None" },
179 { DRM_MODE_ENCODER_DAC, "DAC" },
180 { DRM_MODE_ENCODER_TMDS, "TMDS" },
181 { DRM_MODE_ENCODER_LVDS, "LVDS" },
182 { DRM_MODE_ENCODER_TVDAC, "TV" },
183 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
184 { DRM_MODE_ENCODER_DSI, "DSI" },
185 { DRM_MODE_ENCODER_DPMST, "DP MST" },
188 static const struct drm_prop_enum_list drm_subpixel_enum_list[] =
190 { SubPixelUnknown, "Unknown" },
191 { SubPixelHorizontalRGB, "Horizontal RGB" },
192 { SubPixelHorizontalBGR, "Horizontal BGR" },
193 { SubPixelVerticalRGB, "Vertical RGB" },
194 { SubPixelVerticalBGR, "Vertical BGR" },
195 { SubPixelNone, "None" },
198 void drm_connector_ida_init(void)
202 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
203 ida_init(&drm_connector_enum_list[i].ida);
206 void drm_connector_ida_destroy(void)
210 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
211 ida_destroy(&drm_connector_enum_list[i].ida);
215 * drm_get_connector_status_name - return a string for connector status
216 * @status: connector status to compute name of
218 * In contrast to the other drm_get_*_name functions this one here returns a
219 * const pointer and hence is threadsafe.
221 const char *drm_get_connector_status_name(enum drm_connector_status status)
223 if (status == connector_status_connected)
225 else if (status == connector_status_disconnected)
226 return "disconnected";
230 EXPORT_SYMBOL(drm_get_connector_status_name);
233 * drm_get_subpixel_order_name - return a string for a given subpixel enum
234 * @order: enum of subpixel_order
236 * Note you could abuse this and return something out of bounds, but that
237 * would be a caller error. No unscrubbed user data should make it here.
239 const char *drm_get_subpixel_order_name(enum subpixel_order order)
241 return drm_subpixel_enum_list[order].name;
243 EXPORT_SYMBOL(drm_get_subpixel_order_name);
245 static char printable_char(int c)
247 return isascii(c) && isprint(c) ? c : '?';
251 * drm_get_format_name - return a string for drm fourcc format
252 * @format: format to compute name of
254 * Note that the buffer used by this function is globally shared and owned by
255 * the function itself.
257 * FIXME: This isn't really multithreading safe.
259 const char *drm_get_format_name(uint32_t format)
263 snprintf(buf, sizeof(buf),
264 "%c%c%c%c %s-endian (0x%08x)",
265 printable_char(format & 0xff),
266 printable_char((format >> 8) & 0xff),
267 printable_char((format >> 16) & 0xff),
268 printable_char((format >> 24) & 0x7f),
269 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
274 EXPORT_SYMBOL(drm_get_format_name);
277 * Internal function to assign a slot in the object idr and optionally
278 * register the object into the idr.
280 static int drm_mode_object_get_reg(struct drm_device *dev,
281 struct drm_mode_object *obj,
287 mutex_lock(&dev->mode_config.idr_mutex);
288 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
291 * Set up the object linking under the protection of the idr
292 * lock so that other users can't see inconsistent state.
295 obj->type = obj_type;
297 mutex_unlock(&dev->mode_config.idr_mutex);
299 return ret < 0 ? ret : 0;
303 * drm_mode_object_get - allocate a new modeset identifier
305 * @obj: object pointer, used to generate unique ID
306 * @obj_type: object type
308 * Create a unique identifier based on @ptr in @dev's identifier space. Used
309 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
310 * modeset identifiers are _not_ reference counted. Hence don't use this for
311 * reference counted modeset objects like framebuffers.
314 * New unique (relative to other objects in @dev) integer identifier for the
317 int drm_mode_object_get(struct drm_device *dev,
318 struct drm_mode_object *obj, uint32_t obj_type)
320 return drm_mode_object_get_reg(dev, obj, obj_type, true);
323 static void drm_mode_object_register(struct drm_device *dev,
324 struct drm_mode_object *obj)
326 mutex_lock(&dev->mode_config.idr_mutex);
327 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
328 mutex_unlock(&dev->mode_config.idr_mutex);
332 * drm_mode_object_put - free a modeset identifer
334 * @object: object to free
336 * Free @id from @dev's unique identifier pool. Note that despite the _get
337 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
338 * for reference counted modeset objects like framebuffers.
340 void drm_mode_object_put(struct drm_device *dev,
341 struct drm_mode_object *object)
343 mutex_lock(&dev->mode_config.idr_mutex);
344 idr_remove(&dev->mode_config.crtc_idr, object->id);
345 mutex_unlock(&dev->mode_config.idr_mutex);
348 static struct drm_mode_object *_object_find(struct drm_device *dev,
349 uint32_t id, uint32_t type)
351 struct drm_mode_object *obj = NULL;
353 mutex_lock(&dev->mode_config.idr_mutex);
354 obj = idr_find(&dev->mode_config.crtc_idr, id);
355 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
357 if (obj && obj->id != id)
359 /* don't leak out unref'd fb's */
360 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
362 mutex_unlock(&dev->mode_config.idr_mutex);
368 * drm_mode_object_find - look up a drm object with static lifetime
370 * @id: id of the mode object
371 * @type: type of the mode object
373 * Note that framebuffers cannot be looked up with this functions - since those
374 * are reference counted, they need special treatment. Even with
375 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
376 * rather than WARN_ON()).
378 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
379 uint32_t id, uint32_t type)
381 struct drm_mode_object *obj = NULL;
383 /* Framebuffers are reference counted and need their own lookup
385 WARN_ON(type == DRM_MODE_OBJECT_FB);
386 obj = _object_find(dev, id, type);
389 EXPORT_SYMBOL(drm_mode_object_find);
392 * drm_framebuffer_init - initialize a framebuffer
394 * @fb: framebuffer to be initialized
395 * @funcs: ... with these functions
397 * Allocates an ID for the framebuffer's parent mode object, sets its mode
398 * functions & device file and adds it to the master fd list.
401 * This functions publishes the fb and makes it available for concurrent access
402 * by other users. Which means by this point the fb _must_ be fully set up -
403 * since all the fb attributes are invariant over its lifetime, no further
404 * locking but only correct reference counting is required.
407 * Zero on success, error code on failure.
409 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
410 const struct drm_framebuffer_funcs *funcs)
414 mutex_lock(&dev->mode_config.fb_lock);
415 kref_init(&fb->refcount);
416 INIT_LIST_HEAD(&fb->filp_head);
420 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
424 dev->mode_config.num_fb++;
425 list_add(&fb->head, &dev->mode_config.fb_list);
427 mutex_unlock(&dev->mode_config.fb_lock);
431 EXPORT_SYMBOL(drm_framebuffer_init);
433 /* dev->mode_config.fb_lock must be held! */
434 static void __drm_framebuffer_unregister(struct drm_device *dev,
435 struct drm_framebuffer *fb)
437 mutex_lock(&dev->mode_config.idr_mutex);
438 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
439 mutex_unlock(&dev->mode_config.idr_mutex);
444 static void drm_framebuffer_free(struct kref *kref)
446 struct drm_framebuffer *fb =
447 container_of(kref, struct drm_framebuffer, refcount);
448 struct drm_device *dev = fb->dev;
451 * The lookup idr holds a weak reference, which has not necessarily been
452 * removed at this point. Check for that.
454 mutex_lock(&dev->mode_config.fb_lock);
456 /* Mark fb as reaped and drop idr ref. */
457 __drm_framebuffer_unregister(dev, fb);
459 mutex_unlock(&dev->mode_config.fb_lock);
461 fb->funcs->destroy(fb);
464 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
467 struct drm_mode_object *obj = NULL;
468 struct drm_framebuffer *fb;
470 mutex_lock(&dev->mode_config.idr_mutex);
471 obj = idr_find(&dev->mode_config.crtc_idr, id);
472 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
476 mutex_unlock(&dev->mode_config.idr_mutex);
482 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
484 * @id: id of the fb object
486 * If successful, this grabs an additional reference to the framebuffer -
487 * callers need to make sure to eventually unreference the returned framebuffer
488 * again, using @drm_framebuffer_unreference.
490 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
493 struct drm_framebuffer *fb;
495 mutex_lock(&dev->mode_config.fb_lock);
496 fb = __drm_framebuffer_lookup(dev, id);
498 if (!kref_get_unless_zero(&fb->refcount))
501 mutex_unlock(&dev->mode_config.fb_lock);
505 EXPORT_SYMBOL(drm_framebuffer_lookup);
508 * drm_framebuffer_unreference - unref a framebuffer
509 * @fb: framebuffer to unref
511 * This functions decrements the fb's refcount and frees it if it drops to zero.
513 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
515 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
516 kref_put(&fb->refcount, drm_framebuffer_free);
518 EXPORT_SYMBOL(drm_framebuffer_unreference);
521 * drm_framebuffer_reference - incr the fb refcnt
524 * This functions increments the fb's refcount.
526 void drm_framebuffer_reference(struct drm_framebuffer *fb)
528 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
529 kref_get(&fb->refcount);
531 EXPORT_SYMBOL(drm_framebuffer_reference);
533 static void drm_framebuffer_free_bug(struct kref *kref)
538 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
540 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
541 kref_put(&fb->refcount, drm_framebuffer_free_bug);
545 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
546 * @fb: fb to unregister
548 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
549 * those used for fbdev. Note that the caller must hold a reference of it's own,
550 * i.e. the object may not be destroyed through this call (since it'll lead to a
551 * locking inversion).
553 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
555 struct drm_device *dev = fb->dev;
557 mutex_lock(&dev->mode_config.fb_lock);
558 /* Mark fb as reaped and drop idr ref. */
559 __drm_framebuffer_unregister(dev, fb);
560 mutex_unlock(&dev->mode_config.fb_lock);
562 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
565 * drm_framebuffer_cleanup - remove a framebuffer object
566 * @fb: framebuffer to remove
568 * Cleanup framebuffer. This function is intended to be used from the drivers
569 * ->destroy callback. It can also be used to clean up driver private
570 * framebuffers embedded into a larger structure.
572 * Note that this function does not remove the fb from active usuage - if it is
573 * still used anywhere, hilarity can ensue since userspace could call getfb on
574 * the id and get back -EINVAL. Obviously no concern at driver unload time.
576 * Also, the framebuffer will not be removed from the lookup idr - for
577 * user-created framebuffers this will happen in in the rmfb ioctl. For
578 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
579 * drm_framebuffer_unregister_private.
581 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
583 struct drm_device *dev = fb->dev;
585 mutex_lock(&dev->mode_config.fb_lock);
587 dev->mode_config.num_fb--;
588 mutex_unlock(&dev->mode_config.fb_lock);
590 EXPORT_SYMBOL(drm_framebuffer_cleanup);
593 * drm_framebuffer_remove - remove and unreference a framebuffer object
594 * @fb: framebuffer to remove
596 * Scans all the CRTCs and planes in @dev's mode_config. If they're
597 * using @fb, removes it, setting it to NULL. Then drops the reference to the
598 * passed-in framebuffer. Might take the modeset locks.
600 * Note that this function optimizes the cleanup away if the caller holds the
601 * last reference to the framebuffer. It is also guaranteed to not take the
602 * modeset locks in this case.
604 void drm_framebuffer_remove(struct drm_framebuffer *fb)
606 struct drm_device *dev = fb->dev;
607 struct drm_crtc *crtc;
608 struct drm_plane *plane;
609 struct drm_mode_set set;
612 WARN_ON(!list_empty(&fb->filp_head));
615 * drm ABI mandates that we remove any deleted framebuffers from active
616 * useage. But since most sane clients only remove framebuffers they no
617 * longer need, try to optimize this away.
619 * Since we're holding a reference ourselves, observing a refcount of 1
620 * means that we're the last holder and can skip it. Also, the refcount
621 * can never increase from 1 again, so we don't need any barriers or
624 * Note that userspace could try to race with use and instate a new
625 * usage _after_ we've cleared all current ones. End result will be an
626 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
629 if (atomic_read(&fb->refcount.refcount) > 1) {
630 drm_modeset_lock_all(dev);
631 /* remove from any CRTC */
632 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
633 if (crtc->primary->fb == fb) {
634 /* should turn off the crtc */
635 memset(&set, 0, sizeof(struct drm_mode_set));
638 ret = drm_mode_set_config_internal(&set);
640 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
644 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
646 drm_plane_force_disable(plane);
648 drm_modeset_unlock_all(dev);
651 drm_framebuffer_unreference(fb);
653 EXPORT_SYMBOL(drm_framebuffer_remove);
655 DEFINE_WW_CLASS(crtc_ww_class);
658 * drm_crtc_init_with_planes - Initialise a new CRTC object with
659 * specified primary and cursor planes.
661 * @crtc: CRTC object to init
662 * @primary: Primary plane for CRTC
663 * @cursor: Cursor plane for CRTC
664 * @funcs: callbacks for the new CRTC
666 * Inits a new object created as base part of a driver crtc object.
669 * Zero on success, error code on failure.
671 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
672 struct drm_plane *primary,
673 struct drm_plane *cursor,
674 const struct drm_crtc_funcs *funcs)
676 struct drm_mode_config *config = &dev->mode_config;
681 crtc->invert_dimensions = false;
683 drm_modeset_lock_init(&crtc->mutex);
684 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
688 crtc->base.properties = &crtc->properties;
690 list_add_tail(&crtc->head, &config->crtc_list);
693 crtc->primary = primary;
694 crtc->cursor = cursor;
696 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
698 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
702 EXPORT_SYMBOL(drm_crtc_init_with_planes);
705 * drm_crtc_cleanup - Clean up the core crtc usage
706 * @crtc: CRTC to cleanup
708 * This function cleans up @crtc and removes it from the DRM mode setting
709 * core. Note that the function does *not* free the crtc structure itself,
710 * this is the responsibility of the caller.
712 void drm_crtc_cleanup(struct drm_crtc *crtc)
714 struct drm_device *dev = crtc->dev;
716 kfree(crtc->gamma_store);
717 crtc->gamma_store = NULL;
719 drm_modeset_lock_fini(&crtc->mutex);
721 drm_mode_object_put(dev, &crtc->base);
722 list_del(&crtc->head);
723 dev->mode_config.num_crtc--;
725 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
726 if (crtc->state && crtc->funcs->atomic_destroy_state)
727 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
729 memset(crtc, 0, sizeof(*crtc));
731 EXPORT_SYMBOL(drm_crtc_cleanup);
734 * drm_crtc_index - find the index of a registered CRTC
735 * @crtc: CRTC to find index for
737 * Given a registered CRTC, return the index of that CRTC within a DRM
738 * device's list of CRTCs.
740 unsigned int drm_crtc_index(struct drm_crtc *crtc)
742 unsigned int index = 0;
743 struct drm_crtc *tmp;
745 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
754 EXPORT_SYMBOL(drm_crtc_index);
757 * drm_mode_remove - remove and free a mode
758 * @connector: connector list to modify
759 * @mode: mode to remove
761 * Remove @mode from @connector's mode list, then free it.
763 static void drm_mode_remove(struct drm_connector *connector,
764 struct drm_display_mode *mode)
766 list_del(&mode->head);
767 drm_mode_destroy(connector->dev, mode);
771 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
772 * @connector: connector to quwery
774 * The kernel supports per-connector configration of its consoles through
775 * use of the video= parameter. This function parses that option and
776 * extracts the user's specified mode (or enable/disable status) for a
777 * particular connector. This is typically only used during the early fbdev
780 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
782 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
785 if (fb_get_options(connector->name, &option))
788 if (!drm_mode_parse_command_line_for_connector(option,
796 switch (mode->force) {
800 case DRM_FORCE_ON_DIGITAL:
809 DRM_INFO("forcing %s connector %s\n", connector->name, s);
810 connector->force = mode->force;
813 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
815 mode->xres, mode->yres,
816 mode->refresh_specified ? mode->refresh : 60,
817 mode->rb ? " reduced blanking" : "",
818 mode->margins ? " with margins" : "",
819 mode->interlace ? " interlaced" : "");
823 * drm_connector_init - Init a preallocated connector
825 * @connector: the connector to init
826 * @funcs: callbacks for this connector
827 * @connector_type: user visible type of the connector
829 * Initialises a preallocated connector. Connectors should be
830 * subclassed as part of driver connector objects.
833 * Zero on success, error code on failure.
835 int drm_connector_init(struct drm_device *dev,
836 struct drm_connector *connector,
837 const struct drm_connector_funcs *funcs,
841 struct ida *connector_ida =
842 &drm_connector_enum_list[connector_type].ida;
844 drm_modeset_lock_all(dev);
846 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
850 connector->base.properties = &connector->properties;
851 connector->dev = dev;
852 connector->funcs = funcs;
853 connector->connector_type = connector_type;
854 connector->connector_type_id =
855 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
856 if (connector->connector_type_id < 0) {
857 ret = connector->connector_type_id;
861 kasprintf(GFP_KERNEL, "%s-%d",
862 drm_connector_enum_list[connector_type].name,
863 connector->connector_type_id);
864 if (!connector->name) {
869 INIT_LIST_HEAD(&connector->probed_modes);
870 INIT_LIST_HEAD(&connector->modes);
871 connector->edid_blob_ptr = NULL;
872 connector->status = connector_status_unknown;
874 drm_connector_get_cmdline_mode(connector);
876 /* We should add connectors at the end to avoid upsetting the connector
878 list_add_tail(&connector->head, &dev->mode_config.connector_list);
879 dev->mode_config.num_connector++;
881 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
882 drm_object_attach_property(&connector->base,
883 dev->mode_config.edid_property,
886 drm_object_attach_property(&connector->base,
887 dev->mode_config.dpms_property, 0);
889 connector->debugfs_entry = NULL;
893 drm_mode_object_put(dev, &connector->base);
896 drm_modeset_unlock_all(dev);
900 EXPORT_SYMBOL(drm_connector_init);
903 * drm_connector_cleanup - cleans up an initialised connector
904 * @connector: connector to cleanup
906 * Cleans up the connector but doesn't free the object.
908 void drm_connector_cleanup(struct drm_connector *connector)
910 struct drm_device *dev = connector->dev;
911 struct drm_display_mode *mode, *t;
913 if (connector->tile_group) {
914 drm_mode_put_tile_group(dev, connector->tile_group);
915 connector->tile_group = NULL;
918 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
919 drm_mode_remove(connector, mode);
921 list_for_each_entry_safe(mode, t, &connector->modes, head)
922 drm_mode_remove(connector, mode);
924 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
925 connector->connector_type_id);
927 drm_mode_object_put(dev, &connector->base);
928 kfree(connector->name);
929 connector->name = NULL;
930 list_del(&connector->head);
931 dev->mode_config.num_connector--;
933 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
934 if (connector->state && connector->funcs->atomic_destroy_state)
935 connector->funcs->atomic_destroy_state(connector,
938 memset(connector, 0, sizeof(*connector));
940 EXPORT_SYMBOL(drm_connector_cleanup);
943 * drm_connector_index - find the index of a registered connector
944 * @connector: connector to find index for
946 * Given a registered connector, return the index of that connector within a DRM
947 * device's list of connectors.
949 unsigned int drm_connector_index(struct drm_connector *connector)
951 unsigned int index = 0;
952 struct drm_connector *tmp;
953 struct drm_mode_config *config = &connector->dev->mode_config;
955 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
957 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
958 if (tmp == connector)
966 EXPORT_SYMBOL(drm_connector_index);
969 * drm_connector_register - register a connector
970 * @connector: the connector to register
972 * Register userspace interfaces for a connector
975 * Zero on success, error code on failure.
977 int drm_connector_register(struct drm_connector *connector)
981 drm_mode_object_register(connector->dev, &connector->base);
983 ret = drm_sysfs_connector_add(connector);
987 ret = drm_debugfs_connector_add(connector);
989 drm_sysfs_connector_remove(connector);
995 EXPORT_SYMBOL(drm_connector_register);
998 * drm_connector_unregister - unregister a connector
999 * @connector: the connector to unregister
1001 * Unregister userspace interfaces for a connector
1003 void drm_connector_unregister(struct drm_connector *connector)
1005 drm_sysfs_connector_remove(connector);
1006 drm_debugfs_connector_remove(connector);
1008 EXPORT_SYMBOL(drm_connector_unregister);
1012 * drm_connector_unplug_all - unregister connector userspace interfaces
1015 * This function unregisters all connector userspace interfaces in sysfs. Should
1016 * be call when the device is disconnected, e.g. from an usb driver's
1017 * ->disconnect callback.
1019 void drm_connector_unplug_all(struct drm_device *dev)
1021 struct drm_connector *connector;
1023 /* taking the mode config mutex ends up in a clash with sysfs */
1024 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1025 drm_connector_unregister(connector);
1028 EXPORT_SYMBOL(drm_connector_unplug_all);
1031 * drm_bridge_init - initialize a drm transcoder/bridge
1033 * @bridge: transcoder/bridge to set up
1034 * @funcs: bridge function table
1036 * Initialises a preallocated bridge. Bridges should be
1037 * subclassed as part of driver connector objects.
1040 * Zero on success, error code on failure.
1042 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1043 const struct drm_bridge_funcs *funcs)
1047 drm_modeset_lock_all(dev);
1049 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1054 bridge->funcs = funcs;
1056 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1057 dev->mode_config.num_bridge++;
1060 drm_modeset_unlock_all(dev);
1063 EXPORT_SYMBOL(drm_bridge_init);
1066 * drm_bridge_cleanup - cleans up an initialised bridge
1067 * @bridge: bridge to cleanup
1069 * Cleans up the bridge but doesn't free the object.
1071 void drm_bridge_cleanup(struct drm_bridge *bridge)
1073 struct drm_device *dev = bridge->dev;
1075 drm_modeset_lock_all(dev);
1076 drm_mode_object_put(dev, &bridge->base);
1077 list_del(&bridge->head);
1078 dev->mode_config.num_bridge--;
1079 drm_modeset_unlock_all(dev);
1081 memset(bridge, 0, sizeof(*bridge));
1083 EXPORT_SYMBOL(drm_bridge_cleanup);
1086 * drm_encoder_init - Init a preallocated encoder
1088 * @encoder: the encoder to init
1089 * @funcs: callbacks for this encoder
1090 * @encoder_type: user visible type of the encoder
1092 * Initialises a preallocated encoder. Encoder should be
1093 * subclassed as part of driver encoder objects.
1096 * Zero on success, error code on failure.
1098 int drm_encoder_init(struct drm_device *dev,
1099 struct drm_encoder *encoder,
1100 const struct drm_encoder_funcs *funcs,
1105 drm_modeset_lock_all(dev);
1107 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1112 encoder->encoder_type = encoder_type;
1113 encoder->funcs = funcs;
1114 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1115 drm_encoder_enum_list[encoder_type].name,
1117 if (!encoder->name) {
1122 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1123 dev->mode_config.num_encoder++;
1127 drm_mode_object_put(dev, &encoder->base);
1130 drm_modeset_unlock_all(dev);
1134 EXPORT_SYMBOL(drm_encoder_init);
1137 * drm_encoder_cleanup - cleans up an initialised encoder
1138 * @encoder: encoder to cleanup
1140 * Cleans up the encoder but doesn't free the object.
1142 void drm_encoder_cleanup(struct drm_encoder *encoder)
1144 struct drm_device *dev = encoder->dev;
1145 drm_modeset_lock_all(dev);
1146 drm_mode_object_put(dev, &encoder->base);
1147 kfree(encoder->name);
1148 list_del(&encoder->head);
1149 dev->mode_config.num_encoder--;
1150 drm_modeset_unlock_all(dev);
1152 memset(encoder, 0, sizeof(*encoder));
1154 EXPORT_SYMBOL(drm_encoder_cleanup);
1157 * drm_universal_plane_init - Initialize a new universal plane object
1159 * @plane: plane object to init
1160 * @possible_crtcs: bitmask of possible CRTCs
1161 * @funcs: callbacks for the new plane
1162 * @formats: array of supported formats (%DRM_FORMAT_*)
1163 * @format_count: number of elements in @formats
1164 * @type: type of plane (overlay, primary, cursor)
1166 * Initializes a plane object of type @type.
1169 * Zero on success, error code on failure.
1171 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1172 unsigned long possible_crtcs,
1173 const struct drm_plane_funcs *funcs,
1174 const uint32_t *formats, uint32_t format_count,
1175 enum drm_plane_type type)
1179 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1183 drm_modeset_lock_init(&plane->mutex);
1185 plane->base.properties = &plane->properties;
1187 plane->funcs = funcs;
1188 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1190 if (!plane->format_types) {
1191 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1192 drm_mode_object_put(dev, &plane->base);
1196 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1197 plane->format_count = format_count;
1198 plane->possible_crtcs = possible_crtcs;
1201 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1202 dev->mode_config.num_total_plane++;
1203 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1204 dev->mode_config.num_overlay_plane++;
1206 drm_object_attach_property(&plane->base,
1207 dev->mode_config.plane_type_property,
1212 EXPORT_SYMBOL(drm_universal_plane_init);
1215 * drm_plane_init - Initialize a legacy plane
1217 * @plane: plane object to init
1218 * @possible_crtcs: bitmask of possible CRTCs
1219 * @funcs: callbacks for the new plane
1220 * @formats: array of supported formats (%DRM_FORMAT_*)
1221 * @format_count: number of elements in @formats
1222 * @is_primary: plane type (primary vs overlay)
1224 * Legacy API to initialize a DRM plane.
1226 * New drivers should call drm_universal_plane_init() instead.
1229 * Zero on success, error code on failure.
1231 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1232 unsigned long possible_crtcs,
1233 const struct drm_plane_funcs *funcs,
1234 const uint32_t *formats, uint32_t format_count,
1237 enum drm_plane_type type;
1239 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1240 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1241 formats, format_count, type);
1243 EXPORT_SYMBOL(drm_plane_init);
1246 * drm_plane_cleanup - Clean up the core plane usage
1247 * @plane: plane to cleanup
1249 * This function cleans up @plane and removes it from the DRM mode setting
1250 * core. Note that the function does *not* free the plane structure itself,
1251 * this is the responsibility of the caller.
1253 void drm_plane_cleanup(struct drm_plane *plane)
1255 struct drm_device *dev = plane->dev;
1257 drm_modeset_lock_all(dev);
1258 kfree(plane->format_types);
1259 drm_mode_object_put(dev, &plane->base);
1261 BUG_ON(list_empty(&plane->head));
1263 list_del(&plane->head);
1264 dev->mode_config.num_total_plane--;
1265 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1266 dev->mode_config.num_overlay_plane--;
1267 drm_modeset_unlock_all(dev);
1269 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1270 if (plane->state && plane->funcs->atomic_destroy_state)
1271 plane->funcs->atomic_destroy_state(plane, plane->state);
1273 memset(plane, 0, sizeof(*plane));
1275 EXPORT_SYMBOL(drm_plane_cleanup);
1278 * drm_plane_index - find the index of a registered plane
1279 * @plane: plane to find index for
1281 * Given a registered plane, return the index of that CRTC within a DRM
1282 * device's list of planes.
1284 unsigned int drm_plane_index(struct drm_plane *plane)
1286 unsigned int index = 0;
1287 struct drm_plane *tmp;
1289 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1298 EXPORT_SYMBOL(drm_plane_index);
1301 * drm_plane_force_disable - Forcibly disable a plane
1302 * @plane: plane to disable
1304 * Forces the plane to be disabled.
1306 * Used when the plane's current framebuffer is destroyed,
1307 * and when restoring fbdev mode.
1309 void drm_plane_force_disable(struct drm_plane *plane)
1316 plane->old_fb = plane->fb;
1317 ret = plane->funcs->disable_plane(plane);
1319 DRM_ERROR("failed to disable plane with busy fb\n");
1320 plane->old_fb = NULL;
1323 /* disconnect the plane from the fb and crtc: */
1324 __drm_framebuffer_unreference(plane->old_fb);
1325 plane->old_fb = NULL;
1329 EXPORT_SYMBOL(drm_plane_force_disable);
1331 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1333 struct drm_property *edid;
1334 struct drm_property *dpms;
1335 struct drm_property *dev_path;
1338 * Standard properties (apply to all connectors)
1340 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1341 DRM_MODE_PROP_IMMUTABLE,
1343 dev->mode_config.edid_property = edid;
1345 dpms = drm_property_create_enum(dev, 0,
1346 "DPMS", drm_dpms_enum_list,
1347 ARRAY_SIZE(drm_dpms_enum_list));
1348 dev->mode_config.dpms_property = dpms;
1350 dev_path = drm_property_create(dev,
1351 DRM_MODE_PROP_BLOB |
1352 DRM_MODE_PROP_IMMUTABLE,
1354 dev->mode_config.path_property = dev_path;
1356 dev->mode_config.tile_property = drm_property_create(dev,
1357 DRM_MODE_PROP_BLOB |
1358 DRM_MODE_PROP_IMMUTABLE,
1364 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1366 struct drm_property *type;
1369 * Standard properties (apply to all planes)
1371 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1372 "type", drm_plane_type_enum_list,
1373 ARRAY_SIZE(drm_plane_type_enum_list));
1374 dev->mode_config.plane_type_property = type;
1380 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1383 * Called by a driver the first time a DVI-I connector is made.
1385 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1387 struct drm_property *dvi_i_selector;
1388 struct drm_property *dvi_i_subconnector;
1390 if (dev->mode_config.dvi_i_select_subconnector_property)
1394 drm_property_create_enum(dev, 0,
1395 "select subconnector",
1396 drm_dvi_i_select_enum_list,
1397 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1398 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1400 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1402 drm_dvi_i_subconnector_enum_list,
1403 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1404 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1408 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1411 * drm_create_tv_properties - create TV specific connector properties
1413 * @num_modes: number of different TV formats (modes) supported
1414 * @modes: array of pointers to strings containing name of each format
1416 * Called by a driver's TV initialization routine, this function creates
1417 * the TV specific connector properties for a given device. Caller is
1418 * responsible for allocating a list of format names and passing them to
1421 int drm_mode_create_tv_properties(struct drm_device *dev,
1422 unsigned int num_modes,
1425 struct drm_property *tv_selector;
1426 struct drm_property *tv_subconnector;
1429 if (dev->mode_config.tv_select_subconnector_property)
1433 * Basic connector properties
1435 tv_selector = drm_property_create_enum(dev, 0,
1436 "select subconnector",
1437 drm_tv_select_enum_list,
1438 ARRAY_SIZE(drm_tv_select_enum_list));
1439 dev->mode_config.tv_select_subconnector_property = tv_selector;
1442 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1444 drm_tv_subconnector_enum_list,
1445 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1446 dev->mode_config.tv_subconnector_property = tv_subconnector;
1449 * Other, TV specific properties: margins & TV modes.
1451 dev->mode_config.tv_left_margin_property =
1452 drm_property_create_range(dev, 0, "left margin", 0, 100);
1454 dev->mode_config.tv_right_margin_property =
1455 drm_property_create_range(dev, 0, "right margin", 0, 100);
1457 dev->mode_config.tv_top_margin_property =
1458 drm_property_create_range(dev, 0, "top margin", 0, 100);
1460 dev->mode_config.tv_bottom_margin_property =
1461 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1463 dev->mode_config.tv_mode_property =
1464 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1466 for (i = 0; i < num_modes; i++)
1467 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1470 dev->mode_config.tv_brightness_property =
1471 drm_property_create_range(dev, 0, "brightness", 0, 100);
1473 dev->mode_config.tv_contrast_property =
1474 drm_property_create_range(dev, 0, "contrast", 0, 100);
1476 dev->mode_config.tv_flicker_reduction_property =
1477 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1479 dev->mode_config.tv_overscan_property =
1480 drm_property_create_range(dev, 0, "overscan", 0, 100);
1482 dev->mode_config.tv_saturation_property =
1483 drm_property_create_range(dev, 0, "saturation", 0, 100);
1485 dev->mode_config.tv_hue_property =
1486 drm_property_create_range(dev, 0, "hue", 0, 100);
1490 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1493 * drm_mode_create_scaling_mode_property - create scaling mode property
1496 * Called by a driver the first time it's needed, must be attached to desired
1499 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1501 struct drm_property *scaling_mode;
1503 if (dev->mode_config.scaling_mode_property)
1507 drm_property_create_enum(dev, 0, "scaling mode",
1508 drm_scaling_mode_enum_list,
1509 ARRAY_SIZE(drm_scaling_mode_enum_list));
1511 dev->mode_config.scaling_mode_property = scaling_mode;
1515 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1518 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1521 * Called by a driver the first time it's needed, must be attached to desired
1525 * Zero on success, negative errno on failure.
1527 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1529 if (dev->mode_config.aspect_ratio_property)
1532 dev->mode_config.aspect_ratio_property =
1533 drm_property_create_enum(dev, 0, "aspect ratio",
1534 drm_aspect_ratio_enum_list,
1535 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1537 if (dev->mode_config.aspect_ratio_property == NULL)
1542 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1545 * drm_mode_create_dirty_property - create dirty property
1548 * Called by a driver the first time it's needed, must be attached to desired
1551 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1553 struct drm_property *dirty_info;
1555 if (dev->mode_config.dirty_info_property)
1559 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1561 drm_dirty_info_enum_list,
1562 ARRAY_SIZE(drm_dirty_info_enum_list));
1563 dev->mode_config.dirty_info_property = dirty_info;
1567 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1570 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1573 * Create the the suggested x/y offset property for connectors.
1575 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1577 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1580 dev->mode_config.suggested_x_property =
1581 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1583 dev->mode_config.suggested_y_property =
1584 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1586 if (dev->mode_config.suggested_x_property == NULL ||
1587 dev->mode_config.suggested_y_property == NULL)
1591 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1593 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1595 uint32_t total_objects = 0;
1597 total_objects += dev->mode_config.num_crtc;
1598 total_objects += dev->mode_config.num_connector;
1599 total_objects += dev->mode_config.num_encoder;
1600 total_objects += dev->mode_config.num_bridge;
1602 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1603 if (!group->id_list)
1606 group->num_crtcs = 0;
1607 group->num_connectors = 0;
1608 group->num_encoders = 0;
1609 group->num_bridges = 0;
1613 void drm_mode_group_destroy(struct drm_mode_group *group)
1615 kfree(group->id_list);
1616 group->id_list = NULL;
1620 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1621 * the drm core's responsibility to set up mode control groups.
1623 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1624 struct drm_mode_group *group)
1626 struct drm_crtc *crtc;
1627 struct drm_encoder *encoder;
1628 struct drm_connector *connector;
1629 struct drm_bridge *bridge;
1632 if ((ret = drm_mode_group_init(dev, group)))
1635 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1636 group->id_list[group->num_crtcs++] = crtc->base.id;
1638 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1639 group->id_list[group->num_crtcs + group->num_encoders++] =
1642 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1643 group->id_list[group->num_crtcs + group->num_encoders +
1644 group->num_connectors++] = connector->base.id;
1646 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1647 group->id_list[group->num_crtcs + group->num_encoders +
1648 group->num_connectors + group->num_bridges++] =
1653 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1655 void drm_reinit_primary_mode_group(struct drm_device *dev)
1657 drm_modeset_lock_all(dev);
1658 drm_mode_group_destroy(&dev->primary->mode_group);
1659 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1660 drm_modeset_unlock_all(dev);
1662 EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1665 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1666 * @out: drm_mode_modeinfo struct to return to the user
1667 * @in: drm_display_mode to use
1669 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1672 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1673 const struct drm_display_mode *in)
1675 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1676 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1677 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1678 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1679 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1680 "timing values too large for mode info\n");
1682 out->clock = in->clock;
1683 out->hdisplay = in->hdisplay;
1684 out->hsync_start = in->hsync_start;
1685 out->hsync_end = in->hsync_end;
1686 out->htotal = in->htotal;
1687 out->hskew = in->hskew;
1688 out->vdisplay = in->vdisplay;
1689 out->vsync_start = in->vsync_start;
1690 out->vsync_end = in->vsync_end;
1691 out->vtotal = in->vtotal;
1692 out->vscan = in->vscan;
1693 out->vrefresh = in->vrefresh;
1694 out->flags = in->flags;
1695 out->type = in->type;
1696 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1697 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1701 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1702 * @out: drm_display_mode to return to the user
1703 * @in: drm_mode_modeinfo to use
1705 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1709 * Zero on success, negative errno on failure.
1711 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1712 const struct drm_mode_modeinfo *in)
1714 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1717 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1720 out->clock = in->clock;
1721 out->hdisplay = in->hdisplay;
1722 out->hsync_start = in->hsync_start;
1723 out->hsync_end = in->hsync_end;
1724 out->htotal = in->htotal;
1725 out->hskew = in->hskew;
1726 out->vdisplay = in->vdisplay;
1727 out->vsync_start = in->vsync_start;
1728 out->vsync_end = in->vsync_end;
1729 out->vtotal = in->vtotal;
1730 out->vscan = in->vscan;
1731 out->vrefresh = in->vrefresh;
1732 out->flags = in->flags;
1733 out->type = in->type;
1734 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1735 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1741 * drm_mode_getresources - get graphics configuration
1742 * @dev: drm device for the ioctl
1743 * @data: data pointer for the ioctl
1744 * @file_priv: drm file for the ioctl call
1746 * Construct a set of configuration description structures and return
1747 * them to the user, including CRTC, connector and framebuffer configuration.
1749 * Called by the user via ioctl.
1752 * Zero on success, negative errno on failure.
1754 int drm_mode_getresources(struct drm_device *dev, void *data,
1755 struct drm_file *file_priv)
1757 struct drm_mode_card_res *card_res = data;
1758 struct list_head *lh;
1759 struct drm_framebuffer *fb;
1760 struct drm_connector *connector;
1761 struct drm_crtc *crtc;
1762 struct drm_encoder *encoder;
1764 int connector_count = 0;
1767 int encoder_count = 0;
1769 uint32_t __user *fb_id;
1770 uint32_t __user *crtc_id;
1771 uint32_t __user *connector_id;
1772 uint32_t __user *encoder_id;
1773 struct drm_mode_group *mode_group;
1775 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1779 mutex_lock(&file_priv->fbs_lock);
1781 * For the non-control nodes we need to limit the list of resources
1782 * by IDs in the group list for this node
1784 list_for_each(lh, &file_priv->fbs)
1787 /* handle this in 4 parts */
1789 if (card_res->count_fbs >= fb_count) {
1791 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1792 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1793 if (put_user(fb->base.id, fb_id + copied)) {
1794 mutex_unlock(&file_priv->fbs_lock);
1800 card_res->count_fbs = fb_count;
1801 mutex_unlock(&file_priv->fbs_lock);
1803 /* mode_config.mutex protects the connector list against e.g. DP MST
1804 * connector hot-adding. CRTC/Plane lists are invariant. */
1805 mutex_lock(&dev->mode_config.mutex);
1806 if (!drm_is_primary_client(file_priv)) {
1809 list_for_each(lh, &dev->mode_config.crtc_list)
1812 list_for_each(lh, &dev->mode_config.connector_list)
1815 list_for_each(lh, &dev->mode_config.encoder_list)
1819 mode_group = &file_priv->master->minor->mode_group;
1820 crtc_count = mode_group->num_crtcs;
1821 connector_count = mode_group->num_connectors;
1822 encoder_count = mode_group->num_encoders;
1825 card_res->max_height = dev->mode_config.max_height;
1826 card_res->min_height = dev->mode_config.min_height;
1827 card_res->max_width = dev->mode_config.max_width;
1828 card_res->min_width = dev->mode_config.min_width;
1831 if (card_res->count_crtcs >= crtc_count) {
1833 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1835 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1837 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1838 if (put_user(crtc->base.id, crtc_id + copied)) {
1845 for (i = 0; i < mode_group->num_crtcs; i++) {
1846 if (put_user(mode_group->id_list[i],
1847 crtc_id + copied)) {
1855 card_res->count_crtcs = crtc_count;
1858 if (card_res->count_encoders >= encoder_count) {
1860 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1862 list_for_each_entry(encoder,
1863 &dev->mode_config.encoder_list,
1865 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1867 if (put_user(encoder->base.id, encoder_id +
1875 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1876 if (put_user(mode_group->id_list[i],
1877 encoder_id + copied)) {
1886 card_res->count_encoders = encoder_count;
1889 if (card_res->count_connectors >= connector_count) {
1891 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1893 list_for_each_entry(connector,
1894 &dev->mode_config.connector_list,
1896 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1899 if (put_user(connector->base.id,
1900 connector_id + copied)) {
1907 int start = mode_group->num_crtcs +
1908 mode_group->num_encoders;
1909 for (i = start; i < start + mode_group->num_connectors; i++) {
1910 if (put_user(mode_group->id_list[i],
1911 connector_id + copied)) {
1919 card_res->count_connectors = connector_count;
1921 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1922 card_res->count_connectors, card_res->count_encoders);
1925 mutex_unlock(&dev->mode_config.mutex);
1930 * drm_mode_getcrtc - get CRTC configuration
1931 * @dev: drm device for the ioctl
1932 * @data: data pointer for the ioctl
1933 * @file_priv: drm file for the ioctl call
1935 * Construct a CRTC configuration structure to return to the user.
1937 * Called by the user via ioctl.
1940 * Zero on success, negative errno on failure.
1942 int drm_mode_getcrtc(struct drm_device *dev,
1943 void *data, struct drm_file *file_priv)
1945 struct drm_mode_crtc *crtc_resp = data;
1946 struct drm_crtc *crtc;
1948 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1951 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1955 drm_modeset_lock_crtc(crtc, crtc->primary);
1956 crtc_resp->x = crtc->x;
1957 crtc_resp->y = crtc->y;
1958 crtc_resp->gamma_size = crtc->gamma_size;
1959 if (crtc->primary->fb)
1960 crtc_resp->fb_id = crtc->primary->fb->base.id;
1962 crtc_resp->fb_id = 0;
1964 if (crtc->enabled) {
1966 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1967 crtc_resp->mode_valid = 1;
1970 crtc_resp->mode_valid = 0;
1972 drm_modeset_unlock_crtc(crtc);
1977 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1978 const struct drm_file *file_priv)
1981 * If user-space hasn't configured the driver to expose the stereo 3D
1982 * modes, don't expose them.
1984 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1990 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
1992 /* For atomic drivers only state objects are synchronously updated and
1993 * protected by modeset locks, so check those first. */
1994 if (connector->state)
1995 return connector->state->best_encoder;
1996 return connector->encoder;
2000 * drm_mode_getconnector - get connector configuration
2001 * @dev: drm device for the ioctl
2002 * @data: data pointer for the ioctl
2003 * @file_priv: drm file for the ioctl call
2005 * Construct a connector configuration structure to return to the user.
2007 * Called by the user via ioctl.
2010 * Zero on success, negative errno on failure.
2012 int drm_mode_getconnector(struct drm_device *dev, void *data,
2013 struct drm_file *file_priv)
2015 struct drm_mode_get_connector *out_resp = data;
2016 struct drm_connector *connector;
2017 struct drm_encoder *encoder;
2018 struct drm_display_mode *mode;
2020 int props_count = 0;
2021 int encoders_count = 0;
2025 struct drm_mode_modeinfo u_mode;
2026 struct drm_mode_modeinfo __user *mode_ptr;
2027 uint32_t __user *prop_ptr;
2028 uint64_t __user *prop_values;
2029 uint32_t __user *encoder_ptr;
2031 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2034 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2036 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2038 mutex_lock(&dev->mode_config.mutex);
2040 connector = drm_connector_find(dev, out_resp->connector_id);
2046 props_count = connector->properties.count;
2048 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2049 if (connector->encoder_ids[i] != 0) {
2054 if (out_resp->count_modes == 0) {
2055 connector->funcs->fill_modes(connector,
2056 dev->mode_config.max_width,
2057 dev->mode_config.max_height);
2060 /* delayed so we get modes regardless of pre-fill_modes state */
2061 list_for_each_entry(mode, &connector->modes, head)
2062 if (drm_mode_expose_to_userspace(mode, file_priv))
2065 out_resp->connector_id = connector->base.id;
2066 out_resp->connector_type = connector->connector_type;
2067 out_resp->connector_type_id = connector->connector_type_id;
2068 out_resp->mm_width = connector->display_info.width_mm;
2069 out_resp->mm_height = connector->display_info.height_mm;
2070 out_resp->subpixel = connector->display_info.subpixel_order;
2071 out_resp->connection = connector->status;
2072 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2074 encoder = drm_connector_get_encoder(connector);
2076 out_resp->encoder_id = encoder->base.id;
2078 out_resp->encoder_id = 0;
2079 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2082 * This ioctl is called twice, once to determine how much space is
2083 * needed, and the 2nd time to fill it.
2085 if ((out_resp->count_modes >= mode_count) && mode_count) {
2087 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2088 list_for_each_entry(mode, &connector->modes, head) {
2089 if (!drm_mode_expose_to_userspace(mode, file_priv))
2092 drm_crtc_convert_to_umode(&u_mode, mode);
2093 if (copy_to_user(mode_ptr + copied,
2094 &u_mode, sizeof(u_mode))) {
2101 out_resp->count_modes = mode_count;
2103 if ((out_resp->count_props >= props_count) && props_count) {
2105 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
2106 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
2107 for (i = 0; i < connector->properties.count; i++) {
2108 if (put_user(connector->properties.ids[i],
2109 prop_ptr + copied)) {
2114 if (put_user(connector->properties.values[i],
2115 prop_values + copied)) {
2122 out_resp->count_props = props_count;
2124 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2126 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2127 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2128 if (connector->encoder_ids[i] != 0) {
2129 if (put_user(connector->encoder_ids[i],
2130 encoder_ptr + copied)) {
2138 out_resp->count_encoders = encoders_count;
2141 mutex_unlock(&dev->mode_config.mutex);
2146 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2148 struct drm_connector *connector;
2149 struct drm_device *dev = encoder->dev;
2150 bool uses_atomic = false;
2152 /* For atomic drivers only state objects are synchronously updated and
2153 * protected by modeset locks, so check those first. */
2154 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2155 if (!connector->state)
2160 if (connector->state->best_encoder != encoder)
2163 return connector->state->crtc;
2166 /* Don't return stale data (e.g. pending async disable). */
2170 return encoder->crtc;
2174 * drm_mode_getencoder - get encoder configuration
2175 * @dev: drm device for the ioctl
2176 * @data: data pointer for the ioctl
2177 * @file_priv: drm file for the ioctl call
2179 * Construct a encoder configuration structure to return to the user.
2181 * Called by the user via ioctl.
2184 * Zero on success, negative errno on failure.
2186 int drm_mode_getencoder(struct drm_device *dev, void *data,
2187 struct drm_file *file_priv)
2189 struct drm_mode_get_encoder *enc_resp = data;
2190 struct drm_encoder *encoder;
2191 struct drm_crtc *crtc;
2193 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2196 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2200 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2201 crtc = drm_encoder_get_crtc(encoder);
2203 enc_resp->crtc_id = crtc->base.id;
2204 else if (encoder->crtc)
2205 enc_resp->crtc_id = encoder->crtc->base.id;
2207 enc_resp->crtc_id = 0;
2208 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2210 enc_resp->encoder_type = encoder->encoder_type;
2211 enc_resp->encoder_id = encoder->base.id;
2212 enc_resp->possible_crtcs = encoder->possible_crtcs;
2213 enc_resp->possible_clones = encoder->possible_clones;
2219 * drm_mode_getplane_res - enumerate all plane resources
2222 * @file_priv: DRM file info
2224 * Construct a list of plane ids to return to the user.
2226 * Called by the user via ioctl.
2229 * Zero on success, negative errno on failure.
2231 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2232 struct drm_file *file_priv)
2234 struct drm_mode_get_plane_res *plane_resp = data;
2235 struct drm_mode_config *config;
2236 struct drm_plane *plane;
2237 uint32_t __user *plane_ptr;
2239 unsigned num_planes;
2241 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2244 config = &dev->mode_config;
2246 if (file_priv->universal_planes)
2247 num_planes = config->num_total_plane;
2249 num_planes = config->num_overlay_plane;
2252 * This ioctl is called twice, once to determine how much space is
2253 * needed, and the 2nd time to fill it.
2256 (plane_resp->count_planes >= num_planes)) {
2257 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2259 /* Plane lists are invariant, no locking needed. */
2260 list_for_each_entry(plane, &config->plane_list, head) {
2262 * Unless userspace set the 'universal planes'
2263 * capability bit, only advertise overlays.
2265 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2266 !file_priv->universal_planes)
2269 if (put_user(plane->base.id, plane_ptr + copied))
2274 plane_resp->count_planes = num_planes;
2280 * drm_mode_getplane - get plane configuration
2283 * @file_priv: DRM file info
2285 * Construct a plane configuration structure to return to the user.
2287 * Called by the user via ioctl.
2290 * Zero on success, negative errno on failure.
2292 int drm_mode_getplane(struct drm_device *dev, void *data,
2293 struct drm_file *file_priv)
2295 struct drm_mode_get_plane *plane_resp = data;
2296 struct drm_plane *plane;
2297 uint32_t __user *format_ptr;
2299 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2302 plane = drm_plane_find(dev, plane_resp->plane_id);
2306 drm_modeset_lock(&plane->mutex, NULL);
2308 plane_resp->crtc_id = plane->crtc->base.id;
2310 plane_resp->crtc_id = 0;
2313 plane_resp->fb_id = plane->fb->base.id;
2315 plane_resp->fb_id = 0;
2316 drm_modeset_unlock(&plane->mutex);
2318 plane_resp->plane_id = plane->base.id;
2319 plane_resp->possible_crtcs = plane->possible_crtcs;
2320 plane_resp->gamma_size = 0;
2323 * This ioctl is called twice, once to determine how much space is
2324 * needed, and the 2nd time to fill it.
2326 if (plane->format_count &&
2327 (plane_resp->count_format_types >= plane->format_count)) {
2328 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2329 if (copy_to_user(format_ptr,
2330 plane->format_types,
2331 sizeof(uint32_t) * plane->format_count)) {
2335 plane_resp->count_format_types = plane->format_count;
2341 * setplane_internal - setplane handler for internal callers
2343 * Note that we assume an extra reference has already been taken on fb. If the
2344 * update fails, this reference will be dropped before return; if it succeeds,
2345 * the previous framebuffer (if any) will be unreferenced instead.
2347 * src_{x,y,w,h} are provided in 16.16 fixed point format
2349 static int __setplane_internal(struct drm_plane *plane,
2350 struct drm_crtc *crtc,
2351 struct drm_framebuffer *fb,
2352 int32_t crtc_x, int32_t crtc_y,
2353 uint32_t crtc_w, uint32_t crtc_h,
2354 /* src_{x,y,w,h} values are 16.16 fixed point */
2355 uint32_t src_x, uint32_t src_y,
2356 uint32_t src_w, uint32_t src_h)
2359 unsigned int fb_width, fb_height;
2362 /* No fb means shut it down */
2364 plane->old_fb = plane->fb;
2365 ret = plane->funcs->disable_plane(plane);
2370 plane->old_fb = NULL;
2375 /* Check whether this plane is usable on this CRTC */
2376 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2377 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2382 /* Check whether this plane supports the fb pixel format. */
2383 for (i = 0; i < plane->format_count; i++)
2384 if (fb->pixel_format == plane->format_types[i])
2386 if (i == plane->format_count) {
2387 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2388 drm_get_format_name(fb->pixel_format));
2393 fb_width = fb->width << 16;
2394 fb_height = fb->height << 16;
2396 /* Make sure source coordinates are inside the fb. */
2397 if (src_w > fb_width ||
2398 src_x > fb_width - src_w ||
2399 src_h > fb_height ||
2400 src_y > fb_height - src_h) {
2401 DRM_DEBUG_KMS("Invalid source coordinates "
2402 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2403 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2404 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2405 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2406 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2411 plane->old_fb = plane->fb;
2412 ret = plane->funcs->update_plane(plane, crtc, fb,
2413 crtc_x, crtc_y, crtc_w, crtc_h,
2414 src_x, src_y, src_w, src_h);
2420 plane->old_fb = NULL;
2425 drm_framebuffer_unreference(fb);
2427 drm_framebuffer_unreference(plane->old_fb);
2428 plane->old_fb = NULL;
2433 static int setplane_internal(struct drm_plane *plane,
2434 struct drm_crtc *crtc,
2435 struct drm_framebuffer *fb,
2436 int32_t crtc_x, int32_t crtc_y,
2437 uint32_t crtc_w, uint32_t crtc_h,
2438 /* src_{x,y,w,h} values are 16.16 fixed point */
2439 uint32_t src_x, uint32_t src_y,
2440 uint32_t src_w, uint32_t src_h)
2444 drm_modeset_lock_all(plane->dev);
2445 ret = __setplane_internal(plane, crtc, fb,
2446 crtc_x, crtc_y, crtc_w, crtc_h,
2447 src_x, src_y, src_w, src_h);
2448 drm_modeset_unlock_all(plane->dev);
2454 * drm_mode_setplane - configure a plane's configuration
2456 * @data: ioctl data*
2457 * @file_priv: DRM file info
2459 * Set plane configuration, including placement, fb, scaling, and other factors.
2460 * Or pass a NULL fb to disable (planes may be disabled without providing a
2464 * Zero on success, negative errno on failure.
2466 int drm_mode_setplane(struct drm_device *dev, void *data,
2467 struct drm_file *file_priv)
2469 struct drm_mode_set_plane *plane_req = data;
2470 struct drm_plane *plane;
2471 struct drm_crtc *crtc = NULL;
2472 struct drm_framebuffer *fb = NULL;
2474 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2477 /* Give drivers some help against integer overflows */
2478 if (plane_req->crtc_w > INT_MAX ||
2479 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2480 plane_req->crtc_h > INT_MAX ||
2481 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2482 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2483 plane_req->crtc_w, plane_req->crtc_h,
2484 plane_req->crtc_x, plane_req->crtc_y);
2489 * First, find the plane, crtc, and fb objects. If not available,
2490 * we don't bother to call the driver.
2492 plane = drm_plane_find(dev, plane_req->plane_id);
2494 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2495 plane_req->plane_id);
2499 if (plane_req->fb_id) {
2500 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2502 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2507 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2509 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2510 plane_req->crtc_id);
2516 * setplane_internal will take care of deref'ing either the old or new
2517 * framebuffer depending on success.
2519 return setplane_internal(plane, crtc, fb,
2520 plane_req->crtc_x, plane_req->crtc_y,
2521 plane_req->crtc_w, plane_req->crtc_h,
2522 plane_req->src_x, plane_req->src_y,
2523 plane_req->src_w, plane_req->src_h);
2527 * drm_mode_set_config_internal - helper to call ->set_config
2528 * @set: modeset config to set
2530 * This is a little helper to wrap internal calls to the ->set_config driver
2531 * interface. The only thing it adds is correct refcounting dance.
2534 * Zero on success, negative errno on failure.
2536 int drm_mode_set_config_internal(struct drm_mode_set *set)
2538 struct drm_crtc *crtc = set->crtc;
2539 struct drm_framebuffer *fb;
2540 struct drm_crtc *tmp;
2544 * NOTE: ->set_config can also disable other crtcs (if we steal all
2545 * connectors from it), hence we need to refcount the fbs across all
2546 * crtcs. Atomic modeset will have saner semantics ...
2548 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2549 tmp->primary->old_fb = tmp->primary->fb;
2553 ret = crtc->funcs->set_config(set);
2555 crtc->primary->crtc = crtc;
2556 crtc->primary->fb = fb;
2559 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2560 if (tmp->primary->fb)
2561 drm_framebuffer_reference(tmp->primary->fb);
2562 if (tmp->primary->old_fb)
2563 drm_framebuffer_unreference(tmp->primary->old_fb);
2564 tmp->primary->old_fb = NULL;
2569 EXPORT_SYMBOL(drm_mode_set_config_internal);
2572 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2574 * @crtc: CRTC that framebuffer will be displayed on
2577 * @mode: mode that framebuffer will be displayed under
2578 * @fb: framebuffer to check size of
2580 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2582 const struct drm_display_mode *mode,
2583 const struct drm_framebuffer *fb)
2586 int hdisplay, vdisplay;
2588 hdisplay = mode->hdisplay;
2589 vdisplay = mode->vdisplay;
2591 if (drm_mode_is_stereo(mode)) {
2592 struct drm_display_mode adjusted = *mode;
2594 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2595 hdisplay = adjusted.crtc_hdisplay;
2596 vdisplay = adjusted.crtc_vdisplay;
2599 if (crtc->invert_dimensions)
2600 swap(hdisplay, vdisplay);
2602 if (hdisplay > fb->width ||
2603 vdisplay > fb->height ||
2604 x > fb->width - hdisplay ||
2605 y > fb->height - vdisplay) {
2606 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2607 fb->width, fb->height, hdisplay, vdisplay, x, y,
2608 crtc->invert_dimensions ? " (inverted)" : "");
2614 EXPORT_SYMBOL(drm_crtc_check_viewport);
2617 * drm_mode_setcrtc - set CRTC configuration
2618 * @dev: drm device for the ioctl
2619 * @data: data pointer for the ioctl
2620 * @file_priv: drm file for the ioctl call
2622 * Build a new CRTC configuration based on user request.
2624 * Called by the user via ioctl.
2627 * Zero on success, negative errno on failure.
2629 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2630 struct drm_file *file_priv)
2632 struct drm_mode_config *config = &dev->mode_config;
2633 struct drm_mode_crtc *crtc_req = data;
2634 struct drm_crtc *crtc;
2635 struct drm_connector **connector_set = NULL, *connector;
2636 struct drm_framebuffer *fb = NULL;
2637 struct drm_display_mode *mode = NULL;
2638 struct drm_mode_set set;
2639 uint32_t __user *set_connectors_ptr;
2643 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2646 /* For some reason crtc x/y offsets are signed internally. */
2647 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2650 drm_modeset_lock_all(dev);
2651 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2653 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2657 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2659 if (crtc_req->mode_valid) {
2660 /* If we have a mode we need a framebuffer. */
2661 /* If we pass -1, set the mode with the currently bound fb */
2662 if (crtc_req->fb_id == -1) {
2663 if (!crtc->primary->fb) {
2664 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2668 fb = crtc->primary->fb;
2669 /* Make refcounting symmetric with the lookup path. */
2670 drm_framebuffer_reference(fb);
2672 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2674 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2681 mode = drm_mode_create(dev);
2687 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2689 DRM_DEBUG_KMS("Invalid mode\n");
2693 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2695 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2702 if (crtc_req->count_connectors == 0 && mode) {
2703 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2708 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2709 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2710 crtc_req->count_connectors);
2715 if (crtc_req->count_connectors > 0) {
2718 /* Avoid unbounded kernel memory allocation */
2719 if (crtc_req->count_connectors > config->num_connector) {
2724 connector_set = kmalloc(crtc_req->count_connectors *
2725 sizeof(struct drm_connector *),
2727 if (!connector_set) {
2732 for (i = 0; i < crtc_req->count_connectors; i++) {
2733 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2734 if (get_user(out_id, &set_connectors_ptr[i])) {
2739 connector = drm_connector_find(dev, out_id);
2741 DRM_DEBUG_KMS("Connector id %d unknown\n",
2746 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2750 connector_set[i] = connector;
2755 set.x = crtc_req->x;
2756 set.y = crtc_req->y;
2758 set.connectors = connector_set;
2759 set.num_connectors = crtc_req->count_connectors;
2761 ret = drm_mode_set_config_internal(&set);
2765 drm_framebuffer_unreference(fb);
2767 kfree(connector_set);
2768 drm_mode_destroy(dev, mode);
2769 drm_modeset_unlock_all(dev);
2774 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2775 * universal plane handler call
2776 * @crtc: crtc to update cursor for
2777 * @req: data pointer for the ioctl
2778 * @file_priv: drm file for the ioctl call
2780 * Legacy cursor ioctl's work directly with driver buffer handles. To
2781 * translate legacy ioctl calls into universal plane handler calls, we need to
2782 * wrap the native buffer handle in a drm_framebuffer.
2784 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2785 * buffer with a pitch of 4*width; the universal plane interface should be used
2786 * directly in cases where the hardware can support other buffer settings and
2787 * userspace wants to make use of these capabilities.
2790 * Zero on success, negative errno on failure.
2792 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2793 struct drm_mode_cursor2 *req,
2794 struct drm_file *file_priv)
2796 struct drm_device *dev = crtc->dev;
2797 struct drm_framebuffer *fb = NULL;
2798 struct drm_mode_fb_cmd2 fbreq = {
2799 .width = req->width,
2800 .height = req->height,
2801 .pixel_format = DRM_FORMAT_ARGB8888,
2802 .pitches = { req->width * 4 },
2803 .handles = { req->handle },
2805 int32_t crtc_x, crtc_y;
2806 uint32_t crtc_w = 0, crtc_h = 0;
2807 uint32_t src_w = 0, src_h = 0;
2810 BUG_ON(!crtc->cursor);
2811 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2814 * Obtain fb we'll be using (either new or existing) and take an extra
2815 * reference to it if fb != null. setplane will take care of dropping
2816 * the reference if the plane update fails.
2818 if (req->flags & DRM_MODE_CURSOR_BO) {
2820 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2822 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2826 drm_framebuffer_reference(fb);
2831 fb = crtc->cursor->fb;
2833 drm_framebuffer_reference(fb);
2836 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2840 crtc_x = crtc->cursor_x;
2841 crtc_y = crtc->cursor_y;
2846 crtc_h = fb->height;
2847 src_w = fb->width << 16;
2848 src_h = fb->height << 16;
2852 * setplane_internal will take care of deref'ing either the old or new
2853 * framebuffer depending on success.
2855 ret = __setplane_internal(crtc->cursor, crtc, fb,
2856 crtc_x, crtc_y, crtc_w, crtc_h,
2857 0, 0, src_w, src_h);
2859 /* Update successful; save new cursor position, if necessary */
2860 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2861 crtc->cursor_x = req->x;
2862 crtc->cursor_y = req->y;
2868 static int drm_mode_cursor_common(struct drm_device *dev,
2869 struct drm_mode_cursor2 *req,
2870 struct drm_file *file_priv)
2872 struct drm_crtc *crtc;
2875 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2878 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2881 crtc = drm_crtc_find(dev, req->crtc_id);
2883 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2888 * If this crtc has a universal cursor plane, call that plane's update
2889 * handler rather than using legacy cursor handlers.
2891 drm_modeset_lock_crtc(crtc, crtc->cursor);
2893 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2897 if (req->flags & DRM_MODE_CURSOR_BO) {
2898 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2902 /* Turns off the cursor if handle is 0 */
2903 if (crtc->funcs->cursor_set2)
2904 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2905 req->width, req->height, req->hot_x, req->hot_y);
2907 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2908 req->width, req->height);
2911 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2912 if (crtc->funcs->cursor_move) {
2913 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2920 drm_modeset_unlock_crtc(crtc);
2928 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2929 * @dev: drm device for the ioctl
2930 * @data: data pointer for the ioctl
2931 * @file_priv: drm file for the ioctl call
2933 * Set the cursor configuration based on user request.
2935 * Called by the user via ioctl.
2938 * Zero on success, negative errno on failure.
2940 int drm_mode_cursor_ioctl(struct drm_device *dev,
2941 void *data, struct drm_file *file_priv)
2943 struct drm_mode_cursor *req = data;
2944 struct drm_mode_cursor2 new_req;
2946 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2947 new_req.hot_x = new_req.hot_y = 0;
2949 return drm_mode_cursor_common(dev, &new_req, file_priv);
2953 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2954 * @dev: drm device for the ioctl
2955 * @data: data pointer for the ioctl
2956 * @file_priv: drm file for the ioctl call
2958 * Set the cursor configuration based on user request. This implements the 2nd
2959 * version of the cursor ioctl, which allows userspace to additionally specify
2960 * the hotspot of the pointer.
2962 * Called by the user via ioctl.
2965 * Zero on success, negative errno on failure.
2967 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2968 void *data, struct drm_file *file_priv)
2970 struct drm_mode_cursor2 *req = data;
2971 return drm_mode_cursor_common(dev, req, file_priv);
2975 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2976 * @bpp: bits per pixels
2977 * @depth: bit depth per pixel
2979 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2980 * Useful in fbdev emulation code, since that deals in those values.
2982 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2988 fmt = DRM_FORMAT_C8;
2992 fmt = DRM_FORMAT_XRGB1555;
2994 fmt = DRM_FORMAT_RGB565;
2997 fmt = DRM_FORMAT_RGB888;
3001 fmt = DRM_FORMAT_XRGB8888;
3002 else if (depth == 30)
3003 fmt = DRM_FORMAT_XRGB2101010;
3005 fmt = DRM_FORMAT_ARGB8888;
3008 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3009 fmt = DRM_FORMAT_XRGB8888;
3015 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3018 * drm_mode_addfb - add an FB to the graphics configuration
3019 * @dev: drm device for the ioctl
3020 * @data: data pointer for the ioctl
3021 * @file_priv: drm file for the ioctl call
3023 * Add a new FB to the specified CRTC, given a user request. This is the
3024 * original addfb ioctl which only supported RGB formats.
3026 * Called by the user via ioctl.
3029 * Zero on success, negative errno on failure.
3031 int drm_mode_addfb(struct drm_device *dev,
3032 void *data, struct drm_file *file_priv)
3034 struct drm_mode_fb_cmd *or = data;
3035 struct drm_mode_fb_cmd2 r = {};
3038 /* convert to new format and call new ioctl */
3039 r.fb_id = or->fb_id;
3040 r.width = or->width;
3041 r.height = or->height;
3042 r.pitches[0] = or->pitch;
3043 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3044 r.handles[0] = or->handle;
3046 ret = drm_mode_addfb2(dev, &r, file_priv);
3050 or->fb_id = r.fb_id;
3055 static int format_check(const struct drm_mode_fb_cmd2 *r)
3057 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3061 case DRM_FORMAT_RGB332:
3062 case DRM_FORMAT_BGR233:
3063 case DRM_FORMAT_XRGB4444:
3064 case DRM_FORMAT_XBGR4444:
3065 case DRM_FORMAT_RGBX4444:
3066 case DRM_FORMAT_BGRX4444:
3067 case DRM_FORMAT_ARGB4444:
3068 case DRM_FORMAT_ABGR4444:
3069 case DRM_FORMAT_RGBA4444:
3070 case DRM_FORMAT_BGRA4444:
3071 case DRM_FORMAT_XRGB1555:
3072 case DRM_FORMAT_XBGR1555:
3073 case DRM_FORMAT_RGBX5551:
3074 case DRM_FORMAT_BGRX5551:
3075 case DRM_FORMAT_ARGB1555:
3076 case DRM_FORMAT_ABGR1555:
3077 case DRM_FORMAT_RGBA5551:
3078 case DRM_FORMAT_BGRA5551:
3079 case DRM_FORMAT_RGB565:
3080 case DRM_FORMAT_BGR565:
3081 case DRM_FORMAT_RGB888:
3082 case DRM_FORMAT_BGR888:
3083 case DRM_FORMAT_XRGB8888:
3084 case DRM_FORMAT_XBGR8888:
3085 case DRM_FORMAT_RGBX8888:
3086 case DRM_FORMAT_BGRX8888:
3087 case DRM_FORMAT_ARGB8888:
3088 case DRM_FORMAT_ABGR8888:
3089 case DRM_FORMAT_RGBA8888:
3090 case DRM_FORMAT_BGRA8888:
3091 case DRM_FORMAT_XRGB2101010:
3092 case DRM_FORMAT_XBGR2101010:
3093 case DRM_FORMAT_RGBX1010102:
3094 case DRM_FORMAT_BGRX1010102:
3095 case DRM_FORMAT_ARGB2101010:
3096 case DRM_FORMAT_ABGR2101010:
3097 case DRM_FORMAT_RGBA1010102:
3098 case DRM_FORMAT_BGRA1010102:
3099 case DRM_FORMAT_YUYV:
3100 case DRM_FORMAT_YVYU:
3101 case DRM_FORMAT_UYVY:
3102 case DRM_FORMAT_VYUY:
3103 case DRM_FORMAT_AYUV:
3104 case DRM_FORMAT_NV12:
3105 case DRM_FORMAT_NV21:
3106 case DRM_FORMAT_NV16:
3107 case DRM_FORMAT_NV61:
3108 case DRM_FORMAT_NV24:
3109 case DRM_FORMAT_NV42:
3110 case DRM_FORMAT_YUV410:
3111 case DRM_FORMAT_YVU410:
3112 case DRM_FORMAT_YUV411:
3113 case DRM_FORMAT_YVU411:
3114 case DRM_FORMAT_YUV420:
3115 case DRM_FORMAT_YVU420:
3116 case DRM_FORMAT_YUV422:
3117 case DRM_FORMAT_YVU422:
3118 case DRM_FORMAT_YUV444:
3119 case DRM_FORMAT_YVU444:
3122 DRM_DEBUG_KMS("invalid pixel format %s\n",
3123 drm_get_format_name(r->pixel_format));
3128 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3130 int ret, hsub, vsub, num_planes, i;
3132 ret = format_check(r);
3134 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3135 drm_get_format_name(r->pixel_format));
3139 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3140 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3141 num_planes = drm_format_num_planes(r->pixel_format);
3143 if (r->width == 0 || r->width % hsub) {
3144 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3148 if (r->height == 0 || r->height % vsub) {
3149 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3153 for (i = 0; i < num_planes; i++) {
3154 unsigned int width = r->width / (i != 0 ? hsub : 1);
3155 unsigned int height = r->height / (i != 0 ? vsub : 1);
3156 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3158 if (!r->handles[i]) {
3159 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3163 if ((uint64_t) width * cpp > UINT_MAX)
3166 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3169 if (r->pitches[i] < width * cpp) {
3170 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3178 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3179 struct drm_mode_fb_cmd2 *r,
3180 struct drm_file *file_priv)
3182 struct drm_mode_config *config = &dev->mode_config;
3183 struct drm_framebuffer *fb;
3186 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3187 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3188 return ERR_PTR(-EINVAL);
3191 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3192 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3193 r->width, config->min_width, config->max_width);
3194 return ERR_PTR(-EINVAL);
3196 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3197 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3198 r->height, config->min_height, config->max_height);
3199 return ERR_PTR(-EINVAL);
3202 ret = framebuffer_check(r);
3204 return ERR_PTR(ret);
3206 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3208 DRM_DEBUG_KMS("could not create framebuffer\n");
3212 mutex_lock(&file_priv->fbs_lock);
3213 r->fb_id = fb->base.id;
3214 list_add(&fb->filp_head, &file_priv->fbs);
3215 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3216 mutex_unlock(&file_priv->fbs_lock);
3222 * drm_mode_addfb2 - add an FB to the graphics configuration
3223 * @dev: drm device for the ioctl
3224 * @data: data pointer for the ioctl
3225 * @file_priv: drm file for the ioctl call
3227 * Add a new FB to the specified CRTC, given a user request with format. This is
3228 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3229 * and uses fourcc codes as pixel format specifiers.
3231 * Called by the user via ioctl.
3234 * Zero on success, negative errno on failure.
3236 int drm_mode_addfb2(struct drm_device *dev,
3237 void *data, struct drm_file *file_priv)
3239 struct drm_framebuffer *fb;
3241 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3244 fb = add_framebuffer_internal(dev, data, file_priv);
3252 * drm_mode_rmfb - remove an FB from the configuration
3253 * @dev: drm device for the ioctl
3254 * @data: data pointer for the ioctl
3255 * @file_priv: drm file for the ioctl call
3257 * Remove the FB specified by the user.
3259 * Called by the user via ioctl.
3262 * Zero on success, negative errno on failure.
3264 int drm_mode_rmfb(struct drm_device *dev,
3265 void *data, struct drm_file *file_priv)
3267 struct drm_framebuffer *fb = NULL;
3268 struct drm_framebuffer *fbl = NULL;
3269 uint32_t *id = data;
3272 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3275 mutex_lock(&file_priv->fbs_lock);
3276 mutex_lock(&dev->mode_config.fb_lock);
3277 fb = __drm_framebuffer_lookup(dev, *id);
3281 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3287 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3288 __drm_framebuffer_unregister(dev, fb);
3290 list_del_init(&fb->filp_head);
3291 mutex_unlock(&dev->mode_config.fb_lock);
3292 mutex_unlock(&file_priv->fbs_lock);
3294 drm_framebuffer_remove(fb);
3299 mutex_unlock(&dev->mode_config.fb_lock);
3300 mutex_unlock(&file_priv->fbs_lock);
3306 * drm_mode_getfb - get FB info
3307 * @dev: drm device for the ioctl
3308 * @data: data pointer for the ioctl
3309 * @file_priv: drm file for the ioctl call
3311 * Lookup the FB given its ID and return info about it.
3313 * Called by the user via ioctl.
3316 * Zero on success, negative errno on failure.
3318 int drm_mode_getfb(struct drm_device *dev,
3319 void *data, struct drm_file *file_priv)
3321 struct drm_mode_fb_cmd *r = data;
3322 struct drm_framebuffer *fb;
3325 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3328 fb = drm_framebuffer_lookup(dev, r->fb_id);
3332 r->height = fb->height;
3333 r->width = fb->width;
3334 r->depth = fb->depth;
3335 r->bpp = fb->bits_per_pixel;
3336 r->pitch = fb->pitches[0];
3337 if (fb->funcs->create_handle) {
3338 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3339 drm_is_control_client(file_priv)) {
3340 ret = fb->funcs->create_handle(fb, file_priv,
3343 /* GET_FB() is an unprivileged ioctl so we must not
3344 * return a buffer-handle to non-master processes! For
3345 * backwards-compatibility reasons, we cannot make
3346 * GET_FB() privileged, so just return an invalid handle
3347 * for non-masters. */
3355 drm_framebuffer_unreference(fb);
3361 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3362 * @dev: drm device for the ioctl
3363 * @data: data pointer for the ioctl
3364 * @file_priv: drm file for the ioctl call
3366 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3367 * rectangle list. Generic userspace which does frontbuffer rendering must call
3368 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3369 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3371 * Modesetting drivers which always update the frontbuffer do not need to
3372 * implement the corresponding ->dirty framebuffer callback.
3374 * Called by the user via ioctl.
3377 * Zero on success, negative errno on failure.
3379 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3380 void *data, struct drm_file *file_priv)
3382 struct drm_clip_rect __user *clips_ptr;
3383 struct drm_clip_rect *clips = NULL;
3384 struct drm_mode_fb_dirty_cmd *r = data;
3385 struct drm_framebuffer *fb;
3390 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3393 fb = drm_framebuffer_lookup(dev, r->fb_id);
3397 num_clips = r->num_clips;
3398 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3400 if (!num_clips != !clips_ptr) {
3405 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3407 /* If userspace annotates copy, clips must come in pairs */
3408 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3413 if (num_clips && clips_ptr) {
3414 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3418 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3424 ret = copy_from_user(clips, clips_ptr,
3425 num_clips * sizeof(*clips));
3432 if (fb->funcs->dirty) {
3433 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3442 drm_framebuffer_unreference(fb);
3449 * drm_fb_release - remove and free the FBs on this file
3450 * @priv: drm file for the ioctl
3452 * Destroy all the FBs associated with @filp.
3454 * Called by the user via ioctl.
3457 * Zero on success, negative errno on failure.
3459 void drm_fb_release(struct drm_file *priv)
3461 struct drm_device *dev = priv->minor->dev;
3462 struct drm_framebuffer *fb, *tfb;
3465 * When the file gets released that means no one else can access the fb
3466 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3467 * avoid upsetting lockdep since the universal cursor code adds a
3468 * framebuffer while holding mutex locks.
3470 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3471 * locks is impossible here since no one else but this function can get
3474 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3476 mutex_lock(&dev->mode_config.fb_lock);
3477 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3478 __drm_framebuffer_unregister(dev, fb);
3479 mutex_unlock(&dev->mode_config.fb_lock);
3481 list_del_init(&fb->filp_head);
3483 /* This will also drop the fpriv->fbs reference. */
3484 drm_framebuffer_remove(fb);
3489 * drm_property_create - create a new property type
3491 * @flags: flags specifying the property type
3492 * @name: name of the property
3493 * @num_values: number of pre-defined values
3495 * This creates a new generic drm property which can then be attached to a drm
3496 * object with drm_object_attach_property. The returned property object must be
3497 * freed with drm_property_destroy.
3499 * Note that the DRM core keeps a per-device list of properties and that, if
3500 * drm_mode_config_cleanup() is called, it will destroy all properties created
3504 * A pointer to the newly created property on success, NULL on failure.
3506 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3507 const char *name, int num_values)
3509 struct drm_property *property = NULL;
3512 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3516 property->dev = dev;
3519 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3520 if (!property->values)
3524 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3528 property->flags = flags;
3529 property->num_values = num_values;
3530 INIT_LIST_HEAD(&property->enum_list);
3533 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3534 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3537 list_add_tail(&property->head, &dev->mode_config.property_list);
3539 WARN_ON(!drm_property_type_valid(property));
3543 kfree(property->values);
3547 EXPORT_SYMBOL(drm_property_create);
3550 * drm_property_create_enum - create a new enumeration property type
3552 * @flags: flags specifying the property type
3553 * @name: name of the property
3554 * @props: enumeration lists with property values
3555 * @num_values: number of pre-defined values
3557 * This creates a new generic drm property which can then be attached to a drm
3558 * object with drm_object_attach_property. The returned property object must be
3559 * freed with drm_property_destroy.
3561 * Userspace is only allowed to set one of the predefined values for enumeration
3565 * A pointer to the newly created property on success, NULL on failure.
3567 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3569 const struct drm_prop_enum_list *props,
3572 struct drm_property *property;
3575 flags |= DRM_MODE_PROP_ENUM;
3577 property = drm_property_create(dev, flags, name, num_values);
3581 for (i = 0; i < num_values; i++) {
3582 ret = drm_property_add_enum(property, i,
3586 drm_property_destroy(dev, property);
3593 EXPORT_SYMBOL(drm_property_create_enum);
3596 * drm_property_create_bitmask - create a new bitmask property type
3598 * @flags: flags specifying the property type
3599 * @name: name of the property
3600 * @props: enumeration lists with property bitflags
3601 * @num_props: size of the @props array
3602 * @supported_bits: bitmask of all supported enumeration values
3604 * This creates a new bitmask drm property which can then be attached to a drm
3605 * object with drm_object_attach_property. The returned property object must be
3606 * freed with drm_property_destroy.
3608 * Compared to plain enumeration properties userspace is allowed to set any
3609 * or'ed together combination of the predefined property bitflag values
3612 * A pointer to the newly created property on success, NULL on failure.
3614 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3615 int flags, const char *name,
3616 const struct drm_prop_enum_list *props,
3618 uint64_t supported_bits)
3620 struct drm_property *property;
3621 int i, ret, index = 0;
3622 int num_values = hweight64(supported_bits);
3624 flags |= DRM_MODE_PROP_BITMASK;
3626 property = drm_property_create(dev, flags, name, num_values);
3629 for (i = 0; i < num_props; i++) {
3630 if (!(supported_bits & (1ULL << props[i].type)))
3633 if (WARN_ON(index >= num_values)) {
3634 drm_property_destroy(dev, property);
3638 ret = drm_property_add_enum(property, index++,
3642 drm_property_destroy(dev, property);
3649 EXPORT_SYMBOL(drm_property_create_bitmask);
3651 static struct drm_property *property_create_range(struct drm_device *dev,
3652 int flags, const char *name,
3653 uint64_t min, uint64_t max)
3655 struct drm_property *property;
3657 property = drm_property_create(dev, flags, name, 2);
3661 property->values[0] = min;
3662 property->values[1] = max;
3668 * drm_property_create_range - create a new ranged property type
3670 * @flags: flags specifying the property type
3671 * @name: name of the property
3672 * @min: minimum value of the property
3673 * @max: maximum value of the property
3675 * This creates a new generic drm property which can then be attached to a drm
3676 * object with drm_object_attach_property. The returned property object must be
3677 * freed with drm_property_destroy.
3679 * Userspace is allowed to set any integer value in the (min, max) range
3683 * A pointer to the newly created property on success, NULL on failure.
3685 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3687 uint64_t min, uint64_t max)
3689 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3692 EXPORT_SYMBOL(drm_property_create_range);
3694 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3695 int flags, const char *name,
3696 int64_t min, int64_t max)
3698 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3699 name, I642U64(min), I642U64(max));
3701 EXPORT_SYMBOL(drm_property_create_signed_range);
3703 struct drm_property *drm_property_create_object(struct drm_device *dev,
3704 int flags, const char *name, uint32_t type)
3706 struct drm_property *property;
3708 flags |= DRM_MODE_PROP_OBJECT;
3710 property = drm_property_create(dev, flags, name, 1);
3714 property->values[0] = type;
3718 EXPORT_SYMBOL(drm_property_create_object);
3721 * drm_property_add_enum - add a possible value to an enumeration property
3722 * @property: enumeration property to change
3723 * @index: index of the new enumeration
3724 * @value: value of the new enumeration
3725 * @name: symbolic name of the new enumeration
3727 * This functions adds enumerations to a property.
3729 * It's use is deprecated, drivers should use one of the more specific helpers
3730 * to directly create the property with all enumerations already attached.
3733 * Zero on success, error code on failure.
3735 int drm_property_add_enum(struct drm_property *property, int index,
3736 uint64_t value, const char *name)
3738 struct drm_property_enum *prop_enum;
3740 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3741 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3745 * Bitmask enum properties have the additional constraint of values
3748 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3752 if (!list_empty(&property->enum_list)) {
3753 list_for_each_entry(prop_enum, &property->enum_list, head) {
3754 if (prop_enum->value == value) {
3755 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3756 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3762 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3766 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3767 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3768 prop_enum->value = value;
3770 property->values[index] = value;
3771 list_add_tail(&prop_enum->head, &property->enum_list);
3774 EXPORT_SYMBOL(drm_property_add_enum);
3777 * drm_property_destroy - destroy a drm property
3779 * @property: property to destry
3781 * This function frees a property including any attached resources like
3782 * enumeration values.
3784 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3786 struct drm_property_enum *prop_enum, *pt;
3788 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3789 list_del(&prop_enum->head);
3793 if (property->num_values)
3794 kfree(property->values);
3795 drm_mode_object_put(dev, &property->base);
3796 list_del(&property->head);
3799 EXPORT_SYMBOL(drm_property_destroy);
3802 * drm_object_attach_property - attach a property to a modeset object
3803 * @obj: drm modeset object
3804 * @property: property to attach
3805 * @init_val: initial value of the property
3807 * This attaches the given property to the modeset object with the given initial
3808 * value. Currently this function cannot fail since the properties are stored in
3809 * a statically sized array.
3811 void drm_object_attach_property(struct drm_mode_object *obj,
3812 struct drm_property *property,
3815 int count = obj->properties->count;
3817 if (count == DRM_OBJECT_MAX_PROPERTY) {
3818 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3819 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3820 "you see this message on the same object type.\n",
3825 obj->properties->ids[count] = property->base.id;
3826 obj->properties->values[count] = init_val;
3827 obj->properties->count++;
3829 EXPORT_SYMBOL(drm_object_attach_property);
3832 * drm_object_property_set_value - set the value of a property
3833 * @obj: drm mode object to set property value for
3834 * @property: property to set
3835 * @val: value the property should be set to
3837 * This functions sets a given property on a given object. This function only
3838 * changes the software state of the property, it does not call into the
3839 * driver's ->set_property callback.
3842 * Zero on success, error code on failure.
3844 int drm_object_property_set_value(struct drm_mode_object *obj,
3845 struct drm_property *property, uint64_t val)
3849 for (i = 0; i < obj->properties->count; i++) {
3850 if (obj->properties->ids[i] == property->base.id) {
3851 obj->properties->values[i] = val;
3858 EXPORT_SYMBOL(drm_object_property_set_value);
3861 * drm_object_property_get_value - retrieve the value of a property
3862 * @obj: drm mode object to get property value from
3863 * @property: property to retrieve
3864 * @val: storage for the property value
3866 * This function retrieves the softare state of the given property for the given
3867 * property. Since there is no driver callback to retrieve the current property
3868 * value this might be out of sync with the hardware, depending upon the driver
3872 * Zero on success, error code on failure.
3874 int drm_object_property_get_value(struct drm_mode_object *obj,
3875 struct drm_property *property, uint64_t *val)
3879 for (i = 0; i < obj->properties->count; i++) {
3880 if (obj->properties->ids[i] == property->base.id) {
3881 *val = obj->properties->values[i];
3888 EXPORT_SYMBOL(drm_object_property_get_value);
3891 * drm_mode_getproperty_ioctl - get the property metadata
3894 * @file_priv: DRM file info
3896 * This function retrieves the metadata for a given property, like the different
3897 * possible values for an enum property or the limits for a range property.
3899 * Blob properties are special
3901 * Called by the user via ioctl.
3904 * Zero on success, negative errno on failure.
3906 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3907 void *data, struct drm_file *file_priv)
3909 struct drm_mode_get_property *out_resp = data;
3910 struct drm_property *property;
3912 int value_count = 0;
3915 struct drm_property_enum *prop_enum;
3916 struct drm_mode_property_enum __user *enum_ptr;
3917 uint64_t __user *values_ptr;
3919 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3922 drm_modeset_lock_all(dev);
3923 property = drm_property_find(dev, out_resp->prop_id);
3929 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3930 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3931 list_for_each_entry(prop_enum, &property->enum_list, head)
3935 value_count = property->num_values;
3937 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3938 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3939 out_resp->flags = property->flags;
3941 if ((out_resp->count_values >= value_count) && value_count) {
3942 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3943 for (i = 0; i < value_count; i++) {
3944 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3950 out_resp->count_values = value_count;
3952 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3953 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3954 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3956 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3957 list_for_each_entry(prop_enum, &property->enum_list, head) {
3959 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3964 if (copy_to_user(&enum_ptr[copied].name,
3965 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3972 out_resp->count_enum_blobs = enum_count;
3976 * NOTE: The idea seems to have been to use this to read all the blob
3977 * property values. But nothing ever added them to the corresponding
3978 * list, userspace always used the special-purpose get_blob ioctl to
3979 * read the value for a blob property. It also doesn't make a lot of
3980 * sense to return values here when everything else is just metadata for
3981 * the property itself.
3983 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
3984 out_resp->count_enum_blobs = 0;
3986 drm_modeset_unlock_all(dev);
3990 static struct drm_property_blob *
3991 drm_property_create_blob(struct drm_device *dev, size_t length,
3994 struct drm_property_blob *blob;
3997 if (!length || !data)
4000 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4004 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4010 blob->length = length;
4012 memcpy(blob->data, data, length);
4014 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
4018 static void drm_property_destroy_blob(struct drm_device *dev,
4019 struct drm_property_blob *blob)
4021 drm_mode_object_put(dev, &blob->base);
4022 list_del(&blob->head);
4027 * drm_mode_getblob_ioctl - get the contents of a blob property value
4030 * @file_priv: DRM file info
4032 * This function retrieves the contents of a blob property. The value stored in
4033 * an object's blob property is just a normal modeset object id.
4035 * Called by the user via ioctl.
4038 * Zero on success, negative errno on failure.
4040 int drm_mode_getblob_ioctl(struct drm_device *dev,
4041 void *data, struct drm_file *file_priv)
4043 struct drm_mode_get_blob *out_resp = data;
4044 struct drm_property_blob *blob;
4046 void __user *blob_ptr;
4048 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4051 drm_modeset_lock_all(dev);
4052 blob = drm_property_blob_find(dev, out_resp->blob_id);
4058 if (out_resp->length == blob->length) {
4059 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4060 if (copy_to_user(blob_ptr, blob->data, blob->length)){
4065 out_resp->length = blob->length;
4068 drm_modeset_unlock_all(dev);
4073 * drm_mode_connector_set_path_property - set tile property on connector
4074 * @connector: connector to set property on.
4075 * @path: path to use for property.
4077 * This creates a property to expose to userspace to specify a
4078 * connector path. This is mainly used for DisplayPort MST where
4079 * connectors have a topology and we want to allow userspace to give
4080 * them more meaningful names.
4083 * Zero on success, negative errno on failure.
4085 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4088 struct drm_device *dev = connector->dev;
4089 size_t size = strlen(path) + 1;
4092 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4094 if (!connector->path_blob_ptr)
4097 ret = drm_object_property_set_value(&connector->base,
4098 dev->mode_config.path_property,
4099 connector->path_blob_ptr->base.id);
4102 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4105 * drm_mode_connector_set_tile_property - set tile property on connector
4106 * @connector: connector to set property on.
4108 * This looks up the tile information for a connector, and creates a
4109 * property for userspace to parse if it exists. The property is of
4110 * the form of 8 integers using ':' as a separator.
4113 * Zero on success, errno on failure.
4115 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4117 struct drm_device *dev = connector->dev;
4121 if (connector->tile_blob_ptr)
4122 drm_property_destroy_blob(dev, connector->tile_blob_ptr);
4124 if (!connector->has_tile) {
4125 connector->tile_blob_ptr = NULL;
4126 ret = drm_object_property_set_value(&connector->base,
4127 dev->mode_config.tile_property, 0);
4131 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4132 connector->tile_group->id, connector->tile_is_single_monitor,
4133 connector->num_h_tile, connector->num_v_tile,
4134 connector->tile_h_loc, connector->tile_v_loc,
4135 connector->tile_h_size, connector->tile_v_size);
4136 size = strlen(tile) + 1;
4138 connector->tile_blob_ptr = drm_property_create_blob(connector->dev,
4140 if (!connector->tile_blob_ptr)
4143 ret = drm_object_property_set_value(&connector->base,
4144 dev->mode_config.tile_property,
4145 connector->tile_blob_ptr->base.id);
4148 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4151 * drm_mode_connector_update_edid_property - update the edid property of a connector
4152 * @connector: drm connector
4153 * @edid: new value of the edid property
4155 * This function creates a new blob modeset object and assigns its id to the
4156 * connector's edid property.
4159 * Zero on success, negative errno on failure.
4161 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4162 const struct edid *edid)
4164 struct drm_device *dev = connector->dev;
4168 /* ignore requests to set edid when overridden */
4169 if (connector->override_edid)
4172 if (connector->edid_blob_ptr)
4173 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4175 /* Delete edid, when there is none. */
4177 connector->edid_blob_ptr = NULL;
4178 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4182 size = EDID_LENGTH * (1 + edid->extensions);
4183 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4185 if (!connector->edid_blob_ptr)
4188 ret = drm_object_property_set_value(&connector->base,
4189 dev->mode_config.edid_property,
4190 connector->edid_blob_ptr->base.id);
4194 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4196 /* Some properties could refer to dynamic refcnt'd objects, or things that
4197 * need special locking to handle lifetime issues (ie. to ensure the prop
4198 * value doesn't become invalid part way through the property update due to
4199 * race). The value returned by reference via 'obj' should be passed back
4200 * to drm_property_change_valid_put() after the property is set (and the
4201 * object to which the property is attached has a chance to take it's own
4204 static bool drm_property_change_valid_get(struct drm_property *property,
4205 uint64_t value, struct drm_mode_object **ref)
4207 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4212 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4213 if (value < property->values[0] || value > property->values[1])
4216 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4217 int64_t svalue = U642I64(value);
4218 if (svalue < U642I64(property->values[0]) ||
4219 svalue > U642I64(property->values[1]))
4222 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4224 uint64_t valid_mask = 0;
4225 for (i = 0; i < property->num_values; i++)
4226 valid_mask |= (1ULL << property->values[i]);
4227 return !(value & ~valid_mask);
4228 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4229 /* Only the driver knows */
4231 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4232 /* a zero value for an object property translates to null: */
4236 /* handle refcnt'd objects specially: */
4237 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4238 struct drm_framebuffer *fb;
4239 fb = drm_framebuffer_lookup(property->dev, value);
4247 return _object_find(property->dev, value, property->values[0]) != NULL;
4251 for (i = 0; i < property->num_values; i++)
4252 if (property->values[i] == value)
4258 static void drm_property_change_valid_put(struct drm_property *property,
4259 struct drm_mode_object *ref)
4264 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4265 if (property->values[0] == DRM_MODE_OBJECT_FB)
4266 drm_framebuffer_unreference(obj_to_fb(ref));
4271 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4274 * @file_priv: DRM file info
4276 * This function sets the current value for a connectors's property. It also
4277 * calls into a driver's ->set_property callback to update the hardware state
4279 * Called by the user via ioctl.
4282 * Zero on success, negative errno on failure.
4284 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4285 void *data, struct drm_file *file_priv)
4287 struct drm_mode_connector_set_property *conn_set_prop = data;
4288 struct drm_mode_obj_set_property obj_set_prop = {
4289 .value = conn_set_prop->value,
4290 .prop_id = conn_set_prop->prop_id,
4291 .obj_id = conn_set_prop->connector_id,
4292 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4295 /* It does all the locking and checking we need */
4296 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4299 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4300 struct drm_property *property,
4304 struct drm_connector *connector = obj_to_connector(obj);
4306 /* Do DPMS ourselves */
4307 if (property == connector->dev->mode_config.dpms_property) {
4308 if (connector->funcs->dpms)
4309 (*connector->funcs->dpms)(connector, (int)value);
4311 } else if (connector->funcs->set_property)
4312 ret = connector->funcs->set_property(connector, property, value);
4314 /* store the property value if successful */
4316 drm_object_property_set_value(&connector->base, property, value);
4320 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4321 struct drm_property *property,
4325 struct drm_crtc *crtc = obj_to_crtc(obj);
4327 if (crtc->funcs->set_property)
4328 ret = crtc->funcs->set_property(crtc, property, value);
4330 drm_object_property_set_value(obj, property, value);
4336 * drm_mode_plane_set_obj_prop - set the value of a property
4337 * @plane: drm plane object to set property value for
4338 * @property: property to set
4339 * @value: value the property should be set to
4341 * This functions sets a given property on a given plane object. This function
4342 * calls the driver's ->set_property callback and changes the software state of
4343 * the property if the callback succeeds.
4346 * Zero on success, error code on failure.
4348 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4349 struct drm_property *property,
4353 struct drm_mode_object *obj = &plane->base;
4355 if (plane->funcs->set_property)
4356 ret = plane->funcs->set_property(plane, property, value);
4358 drm_object_property_set_value(obj, property, value);
4362 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4365 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4368 * @file_priv: DRM file info
4370 * This function retrieves the current value for an object's property. Compared
4371 * to the connector specific ioctl this one is extended to also work on crtc and
4374 * Called by the user via ioctl.
4377 * Zero on success, negative errno on failure.
4379 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4380 struct drm_file *file_priv)
4382 struct drm_mode_obj_get_properties *arg = data;
4383 struct drm_mode_object *obj;
4387 int props_count = 0;
4388 uint32_t __user *props_ptr;
4389 uint64_t __user *prop_values_ptr;
4391 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4394 drm_modeset_lock_all(dev);
4396 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4401 if (!obj->properties) {
4406 props_count = obj->properties->count;
4408 /* This ioctl is called twice, once to determine how much space is
4409 * needed, and the 2nd time to fill it. */
4410 if ((arg->count_props >= props_count) && props_count) {
4412 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
4413 prop_values_ptr = (uint64_t __user *)(unsigned long)
4414 (arg->prop_values_ptr);
4415 for (i = 0; i < props_count; i++) {
4416 if (put_user(obj->properties->ids[i],
4417 props_ptr + copied)) {
4421 if (put_user(obj->properties->values[i],
4422 prop_values_ptr + copied)) {
4429 arg->count_props = props_count;
4431 drm_modeset_unlock_all(dev);
4436 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4439 * @file_priv: DRM file info
4441 * This function sets the current value for an object's property. It also calls
4442 * into a driver's ->set_property callback to update the hardware state.
4443 * Compared to the connector specific ioctl this one is extended to also work on
4444 * crtc and plane objects.
4446 * Called by the user via ioctl.
4449 * Zero on success, negative errno on failure.
4451 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4452 struct drm_file *file_priv)
4454 struct drm_mode_obj_set_property *arg = data;
4455 struct drm_mode_object *arg_obj;
4456 struct drm_mode_object *prop_obj;
4457 struct drm_property *property;
4458 int i, ret = -EINVAL;
4459 struct drm_mode_object *ref;
4461 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4464 drm_modeset_lock_all(dev);
4466 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4471 if (!arg_obj->properties)
4474 for (i = 0; i < arg_obj->properties->count; i++)
4475 if (arg_obj->properties->ids[i] == arg->prop_id)
4478 if (i == arg_obj->properties->count)
4481 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4482 DRM_MODE_OBJECT_PROPERTY);
4487 property = obj_to_property(prop_obj);
4489 if (!drm_property_change_valid_get(property, arg->value, &ref))
4492 switch (arg_obj->type) {
4493 case DRM_MODE_OBJECT_CONNECTOR:
4494 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4497 case DRM_MODE_OBJECT_CRTC:
4498 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4500 case DRM_MODE_OBJECT_PLANE:
4501 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4502 property, arg->value);
4506 drm_property_change_valid_put(property, ref);
4509 drm_modeset_unlock_all(dev);
4514 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4515 * @connector: connector to attach
4516 * @encoder: encoder to attach @connector to
4518 * This function links up a connector to an encoder. Note that the routing
4519 * restrictions between encoders and crtcs are exposed to userspace through the
4520 * possible_clones and possible_crtcs bitmasks.
4523 * Zero on success, negative errno on failure.
4525 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4526 struct drm_encoder *encoder)
4530 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4531 if (connector->encoder_ids[i] == 0) {
4532 connector->encoder_ids[i] = encoder->base.id;
4538 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4541 * drm_mode_crtc_set_gamma_size - set the gamma table size
4542 * @crtc: CRTC to set the gamma table size for
4543 * @gamma_size: size of the gamma table
4545 * Drivers which support gamma tables should set this to the supported gamma
4546 * table size when initializing the CRTC. Currently the drm core only supports a
4547 * fixed gamma table size.
4550 * Zero on success, negative errno on failure.
4552 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4555 crtc->gamma_size = gamma_size;
4557 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4558 if (!crtc->gamma_store) {
4559 crtc->gamma_size = 0;
4565 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4568 * drm_mode_gamma_set_ioctl - set the gamma table
4571 * @file_priv: DRM file info
4573 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4574 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4576 * Called by the user via ioctl.
4579 * Zero on success, negative errno on failure.
4581 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4582 void *data, struct drm_file *file_priv)
4584 struct drm_mode_crtc_lut *crtc_lut = data;
4585 struct drm_crtc *crtc;
4586 void *r_base, *g_base, *b_base;
4590 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4593 drm_modeset_lock_all(dev);
4594 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4600 if (crtc->funcs->gamma_set == NULL) {
4605 /* memcpy into gamma store */
4606 if (crtc_lut->gamma_size != crtc->gamma_size) {
4611 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4612 r_base = crtc->gamma_store;
4613 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4618 g_base = r_base + size;
4619 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4624 b_base = g_base + size;
4625 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4630 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4633 drm_modeset_unlock_all(dev);
4639 * drm_mode_gamma_get_ioctl - get the gamma table
4642 * @file_priv: DRM file info
4644 * Copy the current gamma table into the storage provided. This also provides
4645 * the gamma table size the driver expects, which can be used to size the
4646 * allocated storage.
4648 * Called by the user via ioctl.
4651 * Zero on success, negative errno on failure.
4653 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4654 void *data, struct drm_file *file_priv)
4656 struct drm_mode_crtc_lut *crtc_lut = data;
4657 struct drm_crtc *crtc;
4658 void *r_base, *g_base, *b_base;
4662 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4665 drm_modeset_lock_all(dev);
4666 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4672 /* memcpy into gamma store */
4673 if (crtc_lut->gamma_size != crtc->gamma_size) {
4678 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4679 r_base = crtc->gamma_store;
4680 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4685 g_base = r_base + size;
4686 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4691 b_base = g_base + size;
4692 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4697 drm_modeset_unlock_all(dev);
4702 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4705 * @file_priv: DRM file info
4707 * This schedules an asynchronous update on a given CRTC, called page flip.
4708 * Optionally a drm event is generated to signal the completion of the event.
4709 * Generic drivers cannot assume that a pageflip with changed framebuffer
4710 * properties (including driver specific metadata like tiling layout) will work,
4711 * but some drivers support e.g. pixel format changes through the pageflip
4714 * Called by the user via ioctl.
4717 * Zero on success, negative errno on failure.
4719 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4720 void *data, struct drm_file *file_priv)
4722 struct drm_mode_crtc_page_flip *page_flip = data;
4723 struct drm_crtc *crtc;
4724 struct drm_framebuffer *fb = NULL;
4725 struct drm_pending_vblank_event *e = NULL;
4726 unsigned long flags;
4729 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4730 page_flip->reserved != 0)
4733 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4736 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4740 drm_modeset_lock_crtc(crtc, crtc->primary);
4741 if (crtc->primary->fb == NULL) {
4742 /* The framebuffer is currently unbound, presumably
4743 * due to a hotplug event, that userspace has not
4750 if (crtc->funcs->page_flip == NULL)
4753 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4759 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4763 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4764 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4769 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4771 spin_lock_irqsave(&dev->event_lock, flags);
4772 if (file_priv->event_space < sizeof e->event) {
4773 spin_unlock_irqrestore(&dev->event_lock, flags);
4776 file_priv->event_space -= sizeof e->event;
4777 spin_unlock_irqrestore(&dev->event_lock, flags);
4779 e = kzalloc(sizeof *e, GFP_KERNEL);
4781 spin_lock_irqsave(&dev->event_lock, flags);
4782 file_priv->event_space += sizeof e->event;
4783 spin_unlock_irqrestore(&dev->event_lock, flags);
4787 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4788 e->event.base.length = sizeof e->event;
4789 e->event.user_data = page_flip->user_data;
4790 e->base.event = &e->event.base;
4791 e->base.file_priv = file_priv;
4793 (void (*) (struct drm_pending_event *)) kfree;
4796 crtc->primary->old_fb = crtc->primary->fb;
4797 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4799 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4800 spin_lock_irqsave(&dev->event_lock, flags);
4801 file_priv->event_space += sizeof e->event;
4802 spin_unlock_irqrestore(&dev->event_lock, flags);
4805 /* Keep the old fb, don't unref it. */
4806 crtc->primary->old_fb = NULL;
4809 * Warn if the driver hasn't properly updated the crtc->fb
4810 * field to reflect that the new framebuffer is now used.
4811 * Failing to do so will screw with the reference counting
4814 WARN_ON(crtc->primary->fb != fb);
4815 /* Unref only the old framebuffer. */
4821 drm_framebuffer_unreference(fb);
4822 if (crtc->primary->old_fb)
4823 drm_framebuffer_unreference(crtc->primary->old_fb);
4824 crtc->primary->old_fb = NULL;
4825 drm_modeset_unlock_crtc(crtc);
4831 * drm_mode_config_reset - call ->reset callbacks
4834 * This functions calls all the crtc's, encoder's and connector's ->reset
4835 * callback. Drivers can use this in e.g. their driver load or resume code to
4836 * reset hardware and software state.
4838 void drm_mode_config_reset(struct drm_device *dev)
4840 struct drm_crtc *crtc;
4841 struct drm_plane *plane;
4842 struct drm_encoder *encoder;
4843 struct drm_connector *connector;
4845 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4846 if (plane->funcs->reset)
4847 plane->funcs->reset(plane);
4849 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4850 if (crtc->funcs->reset)
4851 crtc->funcs->reset(crtc);
4853 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4854 if (encoder->funcs->reset)
4855 encoder->funcs->reset(encoder);
4857 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4858 connector->status = connector_status_unknown;
4860 if (connector->funcs->reset)
4861 connector->funcs->reset(connector);
4864 EXPORT_SYMBOL(drm_mode_config_reset);
4867 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4870 * @file_priv: DRM file info
4872 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4873 * TTM or something else entirely) and returns the resulting buffer handle. This
4874 * handle can then be wrapped up into a framebuffer modeset object.
4876 * Note that userspace is not allowed to use such objects for render
4877 * acceleration - drivers must create their own private ioctls for such a use
4880 * Called by the user via ioctl.
4883 * Zero on success, negative errno on failure.
4885 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4886 void *data, struct drm_file *file_priv)
4888 struct drm_mode_create_dumb *args = data;
4889 u32 cpp, stride, size;
4891 if (!dev->driver->dumb_create)
4893 if (!args->width || !args->height || !args->bpp)
4896 /* overflow checks for 32bit size calculations */
4897 /* NOTE: DIV_ROUND_UP() can overflow */
4898 cpp = DIV_ROUND_UP(args->bpp, 8);
4899 if (!cpp || cpp > 0xffffffffU / args->width)
4901 stride = cpp * args->width;
4902 if (args->height > 0xffffffffU / stride)
4905 /* test for wrap-around */
4906 size = args->height * stride;
4907 if (PAGE_ALIGN(size) == 0)
4911 * handle, pitch and size are output parameters. Zero them out to
4912 * prevent drivers from accidentally using uninitialized data. Since
4913 * not all existing userspace is clearing these fields properly we
4914 * cannot reject IOCTL with garbage in them.
4920 return dev->driver->dumb_create(file_priv, dev, args);
4924 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4927 * @file_priv: DRM file info
4929 * Allocate an offset in the drm device node's address space to be able to
4930 * memory map a dumb buffer.
4932 * Called by the user via ioctl.
4935 * Zero on success, negative errno on failure.
4937 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4938 void *data, struct drm_file *file_priv)
4940 struct drm_mode_map_dumb *args = data;
4942 /* call driver ioctl to get mmap offset */
4943 if (!dev->driver->dumb_map_offset)
4946 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4950 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4953 * @file_priv: DRM file info
4955 * This destroys the userspace handle for the given dumb backing storage buffer.
4956 * Since buffer objects must be reference counted in the kernel a buffer object
4957 * won't be immediately freed if a framebuffer modeset object still uses it.
4959 * Called by the user via ioctl.
4962 * Zero on success, negative errno on failure.
4964 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4965 void *data, struct drm_file *file_priv)
4967 struct drm_mode_destroy_dumb *args = data;
4969 if (!dev->driver->dumb_destroy)
4972 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4976 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4977 * @format: pixel format (DRM_FORMAT_*)
4978 * @depth: storage for the depth value
4979 * @bpp: storage for the bpp value
4981 * This only supports RGB formats here for compat with code that doesn't use
4982 * pixel formats directly yet.
4984 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4989 case DRM_FORMAT_RGB332:
4990 case DRM_FORMAT_BGR233:
4994 case DRM_FORMAT_XRGB1555:
4995 case DRM_FORMAT_XBGR1555:
4996 case DRM_FORMAT_RGBX5551:
4997 case DRM_FORMAT_BGRX5551:
4998 case DRM_FORMAT_ARGB1555:
4999 case DRM_FORMAT_ABGR1555:
5000 case DRM_FORMAT_RGBA5551:
5001 case DRM_FORMAT_BGRA5551:
5005 case DRM_FORMAT_RGB565:
5006 case DRM_FORMAT_BGR565:
5010 case DRM_FORMAT_RGB888:
5011 case DRM_FORMAT_BGR888:
5015 case DRM_FORMAT_XRGB8888:
5016 case DRM_FORMAT_XBGR8888:
5017 case DRM_FORMAT_RGBX8888:
5018 case DRM_FORMAT_BGRX8888:
5022 case DRM_FORMAT_XRGB2101010:
5023 case DRM_FORMAT_XBGR2101010:
5024 case DRM_FORMAT_RGBX1010102:
5025 case DRM_FORMAT_BGRX1010102:
5026 case DRM_FORMAT_ARGB2101010:
5027 case DRM_FORMAT_ABGR2101010:
5028 case DRM_FORMAT_RGBA1010102:
5029 case DRM_FORMAT_BGRA1010102:
5033 case DRM_FORMAT_ARGB8888:
5034 case DRM_FORMAT_ABGR8888:
5035 case DRM_FORMAT_RGBA8888:
5036 case DRM_FORMAT_BGRA8888:
5041 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5042 drm_get_format_name(format));
5048 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5051 * drm_format_num_planes - get the number of planes for format
5052 * @format: pixel format (DRM_FORMAT_*)
5055 * The number of planes used by the specified pixel format.
5057 int drm_format_num_planes(uint32_t format)
5060 case DRM_FORMAT_YUV410:
5061 case DRM_FORMAT_YVU410:
5062 case DRM_FORMAT_YUV411:
5063 case DRM_FORMAT_YVU411:
5064 case DRM_FORMAT_YUV420:
5065 case DRM_FORMAT_YVU420:
5066 case DRM_FORMAT_YUV422:
5067 case DRM_FORMAT_YVU422:
5068 case DRM_FORMAT_YUV444:
5069 case DRM_FORMAT_YVU444:
5071 case DRM_FORMAT_NV12:
5072 case DRM_FORMAT_NV21:
5073 case DRM_FORMAT_NV16:
5074 case DRM_FORMAT_NV61:
5075 case DRM_FORMAT_NV24:
5076 case DRM_FORMAT_NV42:
5082 EXPORT_SYMBOL(drm_format_num_planes);
5085 * drm_format_plane_cpp - determine the bytes per pixel value
5086 * @format: pixel format (DRM_FORMAT_*)
5087 * @plane: plane index
5090 * The bytes per pixel value for the specified plane.
5092 int drm_format_plane_cpp(uint32_t format, int plane)
5097 if (plane >= drm_format_num_planes(format))
5101 case DRM_FORMAT_YUYV:
5102 case DRM_FORMAT_YVYU:
5103 case DRM_FORMAT_UYVY:
5104 case DRM_FORMAT_VYUY:
5106 case DRM_FORMAT_NV12:
5107 case DRM_FORMAT_NV21:
5108 case DRM_FORMAT_NV16:
5109 case DRM_FORMAT_NV61:
5110 case DRM_FORMAT_NV24:
5111 case DRM_FORMAT_NV42:
5112 return plane ? 2 : 1;
5113 case DRM_FORMAT_YUV410:
5114 case DRM_FORMAT_YVU410:
5115 case DRM_FORMAT_YUV411:
5116 case DRM_FORMAT_YVU411:
5117 case DRM_FORMAT_YUV420:
5118 case DRM_FORMAT_YVU420:
5119 case DRM_FORMAT_YUV422:
5120 case DRM_FORMAT_YVU422:
5121 case DRM_FORMAT_YUV444:
5122 case DRM_FORMAT_YVU444:
5125 drm_fb_get_bpp_depth(format, &depth, &bpp);
5129 EXPORT_SYMBOL(drm_format_plane_cpp);
5132 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5133 * @format: pixel format (DRM_FORMAT_*)
5136 * The horizontal chroma subsampling factor for the
5137 * specified pixel format.
5139 int drm_format_horz_chroma_subsampling(uint32_t format)
5142 case DRM_FORMAT_YUV411:
5143 case DRM_FORMAT_YVU411:
5144 case DRM_FORMAT_YUV410:
5145 case DRM_FORMAT_YVU410:
5147 case DRM_FORMAT_YUYV:
5148 case DRM_FORMAT_YVYU:
5149 case DRM_FORMAT_UYVY:
5150 case DRM_FORMAT_VYUY:
5151 case DRM_FORMAT_NV12:
5152 case DRM_FORMAT_NV21:
5153 case DRM_FORMAT_NV16:
5154 case DRM_FORMAT_NV61:
5155 case DRM_FORMAT_YUV422:
5156 case DRM_FORMAT_YVU422:
5157 case DRM_FORMAT_YUV420:
5158 case DRM_FORMAT_YVU420:
5164 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5167 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5168 * @format: pixel format (DRM_FORMAT_*)
5171 * The vertical chroma subsampling factor for the
5172 * specified pixel format.
5174 int drm_format_vert_chroma_subsampling(uint32_t format)
5177 case DRM_FORMAT_YUV410:
5178 case DRM_FORMAT_YVU410:
5180 case DRM_FORMAT_YUV420:
5181 case DRM_FORMAT_YVU420:
5182 case DRM_FORMAT_NV12:
5183 case DRM_FORMAT_NV21:
5189 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5192 * drm_rotation_simplify() - Try to simplify the rotation
5193 * @rotation: Rotation to be simplified
5194 * @supported_rotations: Supported rotations
5196 * Attempt to simplify the rotation to a form that is supported.
5197 * Eg. if the hardware supports everything except DRM_REFLECT_X
5198 * one could call this function like this:
5200 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5201 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5202 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5204 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5205 * transforms the hardware supports, this function may not
5206 * be able to produce a supported transform, so the caller should
5207 * check the result afterwards.
5209 unsigned int drm_rotation_simplify(unsigned int rotation,
5210 unsigned int supported_rotations)
5212 if (rotation & ~supported_rotations) {
5213 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5214 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5219 EXPORT_SYMBOL(drm_rotation_simplify);
5222 * drm_mode_config_init - initialize DRM mode_configuration structure
5225 * Initialize @dev's mode_config structure, used for tracking the graphics
5226 * configuration of @dev.
5228 * Since this initializes the modeset locks, no locking is possible. Which is no
5229 * problem, since this should happen single threaded at init time. It is the
5230 * driver's problem to ensure this guarantee.
5233 void drm_mode_config_init(struct drm_device *dev)
5235 mutex_init(&dev->mode_config.mutex);
5236 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5237 mutex_init(&dev->mode_config.idr_mutex);
5238 mutex_init(&dev->mode_config.fb_lock);
5239 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5240 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5241 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5242 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
5243 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5244 INIT_LIST_HEAD(&dev->mode_config.property_list);
5245 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5246 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5247 idr_init(&dev->mode_config.crtc_idr);
5248 idr_init(&dev->mode_config.tile_idr);
5250 drm_modeset_lock_all(dev);
5251 drm_mode_create_standard_connector_properties(dev);
5252 drm_mode_create_standard_plane_properties(dev);
5253 drm_modeset_unlock_all(dev);
5255 /* Just to be sure */
5256 dev->mode_config.num_fb = 0;
5257 dev->mode_config.num_connector = 0;
5258 dev->mode_config.num_crtc = 0;
5259 dev->mode_config.num_encoder = 0;
5260 dev->mode_config.num_overlay_plane = 0;
5261 dev->mode_config.num_total_plane = 0;
5263 EXPORT_SYMBOL(drm_mode_config_init);
5266 * drm_mode_config_cleanup - free up DRM mode_config info
5269 * Free up all the connectors and CRTCs associated with this DRM device, then
5270 * free up the framebuffers and associated buffer objects.
5272 * Note that since this /should/ happen single-threaded at driver/device
5273 * teardown time, no locking is required. It's the driver's job to ensure that
5274 * this guarantee actually holds true.
5276 * FIXME: cleanup any dangling user buffer objects too
5278 void drm_mode_config_cleanup(struct drm_device *dev)
5280 struct drm_connector *connector, *ot;
5281 struct drm_crtc *crtc, *ct;
5282 struct drm_encoder *encoder, *enct;
5283 struct drm_bridge *bridge, *brt;
5284 struct drm_framebuffer *fb, *fbt;
5285 struct drm_property *property, *pt;
5286 struct drm_property_blob *blob, *bt;
5287 struct drm_plane *plane, *plt;
5289 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5291 encoder->funcs->destroy(encoder);
5294 list_for_each_entry_safe(bridge, brt,
5295 &dev->mode_config.bridge_list, head) {
5296 bridge->funcs->destroy(bridge);
5299 list_for_each_entry_safe(connector, ot,
5300 &dev->mode_config.connector_list, head) {
5301 connector->funcs->destroy(connector);
5304 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5306 drm_property_destroy(dev, property);
5309 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5311 drm_property_destroy_blob(dev, blob);
5315 * Single-threaded teardown context, so it's not required to grab the
5316 * fb_lock to protect against concurrent fb_list access. Contrary, it
5317 * would actually deadlock with the drm_framebuffer_cleanup function.
5319 * Also, if there are any framebuffers left, that's a driver leak now,
5320 * so politely WARN about this.
5322 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5323 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5324 drm_framebuffer_remove(fb);
5327 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5329 plane->funcs->destroy(plane);
5332 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5333 crtc->funcs->destroy(crtc);
5336 idr_destroy(&dev->mode_config.tile_idr);
5337 idr_destroy(&dev->mode_config.crtc_idr);
5338 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5340 EXPORT_SYMBOL(drm_mode_config_cleanup);
5342 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5343 unsigned int supported_rotations)
5345 static const struct drm_prop_enum_list props[] = {
5346 { DRM_ROTATE_0, "rotate-0" },
5347 { DRM_ROTATE_90, "rotate-90" },
5348 { DRM_ROTATE_180, "rotate-180" },
5349 { DRM_ROTATE_270, "rotate-270" },
5350 { DRM_REFLECT_X, "reflect-x" },
5351 { DRM_REFLECT_Y, "reflect-y" },
5354 return drm_property_create_bitmask(dev, 0, "rotation",
5355 props, ARRAY_SIZE(props),
5356 supported_rotations);
5358 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5363 * Tile groups are used to represent tiled monitors with a unique
5364 * integer identifier. Tiled monitors using DisplayID v1.3 have
5365 * a unique 8-byte handle, we store this in a tile group, so we
5366 * have a common identifier for all tiles in a monitor group.
5368 static void drm_tile_group_free(struct kref *kref)
5370 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5371 struct drm_device *dev = tg->dev;
5372 mutex_lock(&dev->mode_config.idr_mutex);
5373 idr_remove(&dev->mode_config.tile_idr, tg->id);
5374 mutex_unlock(&dev->mode_config.idr_mutex);
5379 * drm_mode_put_tile_group - drop a reference to a tile group.
5381 * @tg: tile group to drop reference to.
5383 * drop reference to tile group and free if 0.
5385 void drm_mode_put_tile_group(struct drm_device *dev,
5386 struct drm_tile_group *tg)
5388 kref_put(&tg->refcount, drm_tile_group_free);
5392 * drm_mode_get_tile_group - get a reference to an existing tile group
5394 * @topology: 8-bytes unique per monitor.
5396 * Use the unique bytes to get a reference to an existing tile group.
5399 * tile group or NULL if not found.
5401 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5404 struct drm_tile_group *tg;
5406 mutex_lock(&dev->mode_config.idr_mutex);
5407 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5408 if (!memcmp(tg->group_data, topology, 8)) {
5409 if (!kref_get_unless_zero(&tg->refcount))
5411 mutex_unlock(&dev->mode_config.idr_mutex);
5415 mutex_unlock(&dev->mode_config.idr_mutex);
5420 * drm_mode_create_tile_group - create a tile group from a displayid description
5422 * @topology: 8-bytes unique per monitor.
5424 * Create a tile group for the unique monitor, and get a unique
5425 * identifier for the tile group.
5428 * new tile group or error.
5430 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5433 struct drm_tile_group *tg;
5436 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5438 return ERR_PTR(-ENOMEM);
5440 kref_init(&tg->refcount);
5441 memcpy(tg->group_data, topology, 8);
5444 mutex_lock(&dev->mode_config.idr_mutex);
5445 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5453 mutex_unlock(&dev->mode_config.idr_mutex);