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_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2573 * @mode: mode to query
2574 * @hdisplay: hdisplay value to fill in
2575 * @vdisplay: vdisplay value to fill in
2577 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2578 * the appropriate layout.
2580 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2581 int *hdisplay, int *vdisplay)
2583 struct drm_display_mode adjusted;
2585 drm_mode_copy(&adjusted, mode);
2586 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2587 *hdisplay = adjusted.crtc_hdisplay;
2588 *vdisplay = adjusted.crtc_vdisplay;
2590 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2593 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2595 * @crtc: CRTC that framebuffer will be displayed on
2598 * @mode: mode that framebuffer will be displayed under
2599 * @fb: framebuffer to check size of
2601 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2603 const struct drm_display_mode *mode,
2604 const struct drm_framebuffer *fb)
2607 int hdisplay, vdisplay;
2609 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2611 if (crtc->invert_dimensions)
2612 swap(hdisplay, vdisplay);
2614 if (hdisplay > fb->width ||
2615 vdisplay > fb->height ||
2616 x > fb->width - hdisplay ||
2617 y > fb->height - vdisplay) {
2618 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2619 fb->width, fb->height, hdisplay, vdisplay, x, y,
2620 crtc->invert_dimensions ? " (inverted)" : "");
2626 EXPORT_SYMBOL(drm_crtc_check_viewport);
2629 * drm_mode_setcrtc - set CRTC configuration
2630 * @dev: drm device for the ioctl
2631 * @data: data pointer for the ioctl
2632 * @file_priv: drm file for the ioctl call
2634 * Build a new CRTC configuration based on user request.
2636 * Called by the user via ioctl.
2639 * Zero on success, negative errno on failure.
2641 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2642 struct drm_file *file_priv)
2644 struct drm_mode_config *config = &dev->mode_config;
2645 struct drm_mode_crtc *crtc_req = data;
2646 struct drm_crtc *crtc;
2647 struct drm_connector **connector_set = NULL, *connector;
2648 struct drm_framebuffer *fb = NULL;
2649 struct drm_display_mode *mode = NULL;
2650 struct drm_mode_set set;
2651 uint32_t __user *set_connectors_ptr;
2655 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2658 /* For some reason crtc x/y offsets are signed internally. */
2659 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2662 drm_modeset_lock_all(dev);
2663 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2665 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2669 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2671 if (crtc_req->mode_valid) {
2672 /* If we have a mode we need a framebuffer. */
2673 /* If we pass -1, set the mode with the currently bound fb */
2674 if (crtc_req->fb_id == -1) {
2675 if (!crtc->primary->fb) {
2676 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2680 fb = crtc->primary->fb;
2681 /* Make refcounting symmetric with the lookup path. */
2682 drm_framebuffer_reference(fb);
2684 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2686 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2693 mode = drm_mode_create(dev);
2699 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2701 DRM_DEBUG_KMS("Invalid mode\n");
2705 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2707 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2714 if (crtc_req->count_connectors == 0 && mode) {
2715 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2720 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2721 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2722 crtc_req->count_connectors);
2727 if (crtc_req->count_connectors > 0) {
2730 /* Avoid unbounded kernel memory allocation */
2731 if (crtc_req->count_connectors > config->num_connector) {
2736 connector_set = kmalloc(crtc_req->count_connectors *
2737 sizeof(struct drm_connector *),
2739 if (!connector_set) {
2744 for (i = 0; i < crtc_req->count_connectors; i++) {
2745 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2746 if (get_user(out_id, &set_connectors_ptr[i])) {
2751 connector = drm_connector_find(dev, out_id);
2753 DRM_DEBUG_KMS("Connector id %d unknown\n",
2758 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2762 connector_set[i] = connector;
2767 set.x = crtc_req->x;
2768 set.y = crtc_req->y;
2770 set.connectors = connector_set;
2771 set.num_connectors = crtc_req->count_connectors;
2773 ret = drm_mode_set_config_internal(&set);
2777 drm_framebuffer_unreference(fb);
2779 kfree(connector_set);
2780 drm_mode_destroy(dev, mode);
2781 drm_modeset_unlock_all(dev);
2786 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2787 * universal plane handler call
2788 * @crtc: crtc to update cursor for
2789 * @req: data pointer for the ioctl
2790 * @file_priv: drm file for the ioctl call
2792 * Legacy cursor ioctl's work directly with driver buffer handles. To
2793 * translate legacy ioctl calls into universal plane handler calls, we need to
2794 * wrap the native buffer handle in a drm_framebuffer.
2796 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2797 * buffer with a pitch of 4*width; the universal plane interface should be used
2798 * directly in cases where the hardware can support other buffer settings and
2799 * userspace wants to make use of these capabilities.
2802 * Zero on success, negative errno on failure.
2804 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2805 struct drm_mode_cursor2 *req,
2806 struct drm_file *file_priv)
2808 struct drm_device *dev = crtc->dev;
2809 struct drm_framebuffer *fb = NULL;
2810 struct drm_mode_fb_cmd2 fbreq = {
2811 .width = req->width,
2812 .height = req->height,
2813 .pixel_format = DRM_FORMAT_ARGB8888,
2814 .pitches = { req->width * 4 },
2815 .handles = { req->handle },
2817 int32_t crtc_x, crtc_y;
2818 uint32_t crtc_w = 0, crtc_h = 0;
2819 uint32_t src_w = 0, src_h = 0;
2822 BUG_ON(!crtc->cursor);
2823 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2826 * Obtain fb we'll be using (either new or existing) and take an extra
2827 * reference to it if fb != null. setplane will take care of dropping
2828 * the reference if the plane update fails.
2830 if (req->flags & DRM_MODE_CURSOR_BO) {
2832 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2834 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2838 drm_framebuffer_reference(fb);
2843 fb = crtc->cursor->fb;
2845 drm_framebuffer_reference(fb);
2848 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2852 crtc_x = crtc->cursor_x;
2853 crtc_y = crtc->cursor_y;
2858 crtc_h = fb->height;
2859 src_w = fb->width << 16;
2860 src_h = fb->height << 16;
2864 * setplane_internal will take care of deref'ing either the old or new
2865 * framebuffer depending on success.
2867 ret = __setplane_internal(crtc->cursor, crtc, fb,
2868 crtc_x, crtc_y, crtc_w, crtc_h,
2869 0, 0, src_w, src_h);
2871 /* Update successful; save new cursor position, if necessary */
2872 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2873 crtc->cursor_x = req->x;
2874 crtc->cursor_y = req->y;
2880 static int drm_mode_cursor_common(struct drm_device *dev,
2881 struct drm_mode_cursor2 *req,
2882 struct drm_file *file_priv)
2884 struct drm_crtc *crtc;
2887 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2890 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2893 crtc = drm_crtc_find(dev, req->crtc_id);
2895 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2900 * If this crtc has a universal cursor plane, call that plane's update
2901 * handler rather than using legacy cursor handlers.
2903 drm_modeset_lock_crtc(crtc, crtc->cursor);
2905 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2909 if (req->flags & DRM_MODE_CURSOR_BO) {
2910 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2914 /* Turns off the cursor if handle is 0 */
2915 if (crtc->funcs->cursor_set2)
2916 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2917 req->width, req->height, req->hot_x, req->hot_y);
2919 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2920 req->width, req->height);
2923 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2924 if (crtc->funcs->cursor_move) {
2925 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2932 drm_modeset_unlock_crtc(crtc);
2940 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2941 * @dev: drm device for the ioctl
2942 * @data: data pointer for the ioctl
2943 * @file_priv: drm file for the ioctl call
2945 * Set the cursor configuration based on user request.
2947 * Called by the user via ioctl.
2950 * Zero on success, negative errno on failure.
2952 int drm_mode_cursor_ioctl(struct drm_device *dev,
2953 void *data, struct drm_file *file_priv)
2955 struct drm_mode_cursor *req = data;
2956 struct drm_mode_cursor2 new_req;
2958 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2959 new_req.hot_x = new_req.hot_y = 0;
2961 return drm_mode_cursor_common(dev, &new_req, file_priv);
2965 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2966 * @dev: drm device for the ioctl
2967 * @data: data pointer for the ioctl
2968 * @file_priv: drm file for the ioctl call
2970 * Set the cursor configuration based on user request. This implements the 2nd
2971 * version of the cursor ioctl, which allows userspace to additionally specify
2972 * the hotspot of the pointer.
2974 * Called by the user via ioctl.
2977 * Zero on success, negative errno on failure.
2979 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2980 void *data, struct drm_file *file_priv)
2982 struct drm_mode_cursor2 *req = data;
2983 return drm_mode_cursor_common(dev, req, file_priv);
2987 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2988 * @bpp: bits per pixels
2989 * @depth: bit depth per pixel
2991 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2992 * Useful in fbdev emulation code, since that deals in those values.
2994 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3000 fmt = DRM_FORMAT_C8;
3004 fmt = DRM_FORMAT_XRGB1555;
3006 fmt = DRM_FORMAT_RGB565;
3009 fmt = DRM_FORMAT_RGB888;
3013 fmt = DRM_FORMAT_XRGB8888;
3014 else if (depth == 30)
3015 fmt = DRM_FORMAT_XRGB2101010;
3017 fmt = DRM_FORMAT_ARGB8888;
3020 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3021 fmt = DRM_FORMAT_XRGB8888;
3027 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3030 * drm_mode_addfb - add an FB to the graphics configuration
3031 * @dev: drm device for the ioctl
3032 * @data: data pointer for the ioctl
3033 * @file_priv: drm file for the ioctl call
3035 * Add a new FB to the specified CRTC, given a user request. This is the
3036 * original addfb ioctl which only supported RGB formats.
3038 * Called by the user via ioctl.
3041 * Zero on success, negative errno on failure.
3043 int drm_mode_addfb(struct drm_device *dev,
3044 void *data, struct drm_file *file_priv)
3046 struct drm_mode_fb_cmd *or = data;
3047 struct drm_mode_fb_cmd2 r = {};
3050 /* convert to new format and call new ioctl */
3051 r.fb_id = or->fb_id;
3052 r.width = or->width;
3053 r.height = or->height;
3054 r.pitches[0] = or->pitch;
3055 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3056 r.handles[0] = or->handle;
3058 ret = drm_mode_addfb2(dev, &r, file_priv);
3062 or->fb_id = r.fb_id;
3067 static int format_check(const struct drm_mode_fb_cmd2 *r)
3069 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3073 case DRM_FORMAT_RGB332:
3074 case DRM_FORMAT_BGR233:
3075 case DRM_FORMAT_XRGB4444:
3076 case DRM_FORMAT_XBGR4444:
3077 case DRM_FORMAT_RGBX4444:
3078 case DRM_FORMAT_BGRX4444:
3079 case DRM_FORMAT_ARGB4444:
3080 case DRM_FORMAT_ABGR4444:
3081 case DRM_FORMAT_RGBA4444:
3082 case DRM_FORMAT_BGRA4444:
3083 case DRM_FORMAT_XRGB1555:
3084 case DRM_FORMAT_XBGR1555:
3085 case DRM_FORMAT_RGBX5551:
3086 case DRM_FORMAT_BGRX5551:
3087 case DRM_FORMAT_ARGB1555:
3088 case DRM_FORMAT_ABGR1555:
3089 case DRM_FORMAT_RGBA5551:
3090 case DRM_FORMAT_BGRA5551:
3091 case DRM_FORMAT_RGB565:
3092 case DRM_FORMAT_BGR565:
3093 case DRM_FORMAT_RGB888:
3094 case DRM_FORMAT_BGR888:
3095 case DRM_FORMAT_XRGB8888:
3096 case DRM_FORMAT_XBGR8888:
3097 case DRM_FORMAT_RGBX8888:
3098 case DRM_FORMAT_BGRX8888:
3099 case DRM_FORMAT_ARGB8888:
3100 case DRM_FORMAT_ABGR8888:
3101 case DRM_FORMAT_RGBA8888:
3102 case DRM_FORMAT_BGRA8888:
3103 case DRM_FORMAT_XRGB2101010:
3104 case DRM_FORMAT_XBGR2101010:
3105 case DRM_FORMAT_RGBX1010102:
3106 case DRM_FORMAT_BGRX1010102:
3107 case DRM_FORMAT_ARGB2101010:
3108 case DRM_FORMAT_ABGR2101010:
3109 case DRM_FORMAT_RGBA1010102:
3110 case DRM_FORMAT_BGRA1010102:
3111 case DRM_FORMAT_YUYV:
3112 case DRM_FORMAT_YVYU:
3113 case DRM_FORMAT_UYVY:
3114 case DRM_FORMAT_VYUY:
3115 case DRM_FORMAT_AYUV:
3116 case DRM_FORMAT_NV12:
3117 case DRM_FORMAT_NV21:
3118 case DRM_FORMAT_NV16:
3119 case DRM_FORMAT_NV61:
3120 case DRM_FORMAT_NV24:
3121 case DRM_FORMAT_NV42:
3122 case DRM_FORMAT_YUV410:
3123 case DRM_FORMAT_YVU410:
3124 case DRM_FORMAT_YUV411:
3125 case DRM_FORMAT_YVU411:
3126 case DRM_FORMAT_YUV420:
3127 case DRM_FORMAT_YVU420:
3128 case DRM_FORMAT_YUV422:
3129 case DRM_FORMAT_YVU422:
3130 case DRM_FORMAT_YUV444:
3131 case DRM_FORMAT_YVU444:
3134 DRM_DEBUG_KMS("invalid pixel format %s\n",
3135 drm_get_format_name(r->pixel_format));
3140 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3142 int ret, hsub, vsub, num_planes, i;
3144 ret = format_check(r);
3146 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3147 drm_get_format_name(r->pixel_format));
3151 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3152 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3153 num_planes = drm_format_num_planes(r->pixel_format);
3155 if (r->width == 0 || r->width % hsub) {
3156 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3160 if (r->height == 0 || r->height % vsub) {
3161 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3165 for (i = 0; i < num_planes; i++) {
3166 unsigned int width = r->width / (i != 0 ? hsub : 1);
3167 unsigned int height = r->height / (i != 0 ? vsub : 1);
3168 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3170 if (!r->handles[i]) {
3171 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3175 if ((uint64_t) width * cpp > UINT_MAX)
3178 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3181 if (r->pitches[i] < width * cpp) {
3182 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3190 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3191 struct drm_mode_fb_cmd2 *r,
3192 struct drm_file *file_priv)
3194 struct drm_mode_config *config = &dev->mode_config;
3195 struct drm_framebuffer *fb;
3198 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3199 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3200 return ERR_PTR(-EINVAL);
3203 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3204 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3205 r->width, config->min_width, config->max_width);
3206 return ERR_PTR(-EINVAL);
3208 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3209 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3210 r->height, config->min_height, config->max_height);
3211 return ERR_PTR(-EINVAL);
3214 ret = framebuffer_check(r);
3216 return ERR_PTR(ret);
3218 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3220 DRM_DEBUG_KMS("could not create framebuffer\n");
3224 mutex_lock(&file_priv->fbs_lock);
3225 r->fb_id = fb->base.id;
3226 list_add(&fb->filp_head, &file_priv->fbs);
3227 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3228 mutex_unlock(&file_priv->fbs_lock);
3234 * drm_mode_addfb2 - add an FB to the graphics configuration
3235 * @dev: drm device for the ioctl
3236 * @data: data pointer for the ioctl
3237 * @file_priv: drm file for the ioctl call
3239 * Add a new FB to the specified CRTC, given a user request with format. This is
3240 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3241 * and uses fourcc codes as pixel format specifiers.
3243 * Called by the user via ioctl.
3246 * Zero on success, negative errno on failure.
3248 int drm_mode_addfb2(struct drm_device *dev,
3249 void *data, struct drm_file *file_priv)
3251 struct drm_framebuffer *fb;
3253 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3256 fb = add_framebuffer_internal(dev, data, file_priv);
3264 * drm_mode_rmfb - remove an FB from the configuration
3265 * @dev: drm device for the ioctl
3266 * @data: data pointer for the ioctl
3267 * @file_priv: drm file for the ioctl call
3269 * Remove the FB specified by the user.
3271 * Called by the user via ioctl.
3274 * Zero on success, negative errno on failure.
3276 int drm_mode_rmfb(struct drm_device *dev,
3277 void *data, struct drm_file *file_priv)
3279 struct drm_framebuffer *fb = NULL;
3280 struct drm_framebuffer *fbl = NULL;
3281 uint32_t *id = data;
3284 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3287 mutex_lock(&file_priv->fbs_lock);
3288 mutex_lock(&dev->mode_config.fb_lock);
3289 fb = __drm_framebuffer_lookup(dev, *id);
3293 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3299 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3300 __drm_framebuffer_unregister(dev, fb);
3302 list_del_init(&fb->filp_head);
3303 mutex_unlock(&dev->mode_config.fb_lock);
3304 mutex_unlock(&file_priv->fbs_lock);
3306 drm_framebuffer_remove(fb);
3311 mutex_unlock(&dev->mode_config.fb_lock);
3312 mutex_unlock(&file_priv->fbs_lock);
3318 * drm_mode_getfb - get FB info
3319 * @dev: drm device for the ioctl
3320 * @data: data pointer for the ioctl
3321 * @file_priv: drm file for the ioctl call
3323 * Lookup the FB given its ID and return info about it.
3325 * Called by the user via ioctl.
3328 * Zero on success, negative errno on failure.
3330 int drm_mode_getfb(struct drm_device *dev,
3331 void *data, struct drm_file *file_priv)
3333 struct drm_mode_fb_cmd *r = data;
3334 struct drm_framebuffer *fb;
3337 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3340 fb = drm_framebuffer_lookup(dev, r->fb_id);
3344 r->height = fb->height;
3345 r->width = fb->width;
3346 r->depth = fb->depth;
3347 r->bpp = fb->bits_per_pixel;
3348 r->pitch = fb->pitches[0];
3349 if (fb->funcs->create_handle) {
3350 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3351 drm_is_control_client(file_priv)) {
3352 ret = fb->funcs->create_handle(fb, file_priv,
3355 /* GET_FB() is an unprivileged ioctl so we must not
3356 * return a buffer-handle to non-master processes! For
3357 * backwards-compatibility reasons, we cannot make
3358 * GET_FB() privileged, so just return an invalid handle
3359 * for non-masters. */
3367 drm_framebuffer_unreference(fb);
3373 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3374 * @dev: drm device for the ioctl
3375 * @data: data pointer for the ioctl
3376 * @file_priv: drm file for the ioctl call
3378 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3379 * rectangle list. Generic userspace which does frontbuffer rendering must call
3380 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3381 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3383 * Modesetting drivers which always update the frontbuffer do not need to
3384 * implement the corresponding ->dirty framebuffer callback.
3386 * Called by the user via ioctl.
3389 * Zero on success, negative errno on failure.
3391 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3392 void *data, struct drm_file *file_priv)
3394 struct drm_clip_rect __user *clips_ptr;
3395 struct drm_clip_rect *clips = NULL;
3396 struct drm_mode_fb_dirty_cmd *r = data;
3397 struct drm_framebuffer *fb;
3402 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3405 fb = drm_framebuffer_lookup(dev, r->fb_id);
3409 num_clips = r->num_clips;
3410 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3412 if (!num_clips != !clips_ptr) {
3417 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3419 /* If userspace annotates copy, clips must come in pairs */
3420 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3425 if (num_clips && clips_ptr) {
3426 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3430 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3436 ret = copy_from_user(clips, clips_ptr,
3437 num_clips * sizeof(*clips));
3444 if (fb->funcs->dirty) {
3445 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3454 drm_framebuffer_unreference(fb);
3461 * drm_fb_release - remove and free the FBs on this file
3462 * @priv: drm file for the ioctl
3464 * Destroy all the FBs associated with @filp.
3466 * Called by the user via ioctl.
3469 * Zero on success, negative errno on failure.
3471 void drm_fb_release(struct drm_file *priv)
3473 struct drm_device *dev = priv->minor->dev;
3474 struct drm_framebuffer *fb, *tfb;
3477 * When the file gets released that means no one else can access the fb
3478 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3479 * avoid upsetting lockdep since the universal cursor code adds a
3480 * framebuffer while holding mutex locks.
3482 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3483 * locks is impossible here since no one else but this function can get
3486 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3488 mutex_lock(&dev->mode_config.fb_lock);
3489 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3490 __drm_framebuffer_unregister(dev, fb);
3491 mutex_unlock(&dev->mode_config.fb_lock);
3493 list_del_init(&fb->filp_head);
3495 /* This will also drop the fpriv->fbs reference. */
3496 drm_framebuffer_remove(fb);
3501 * drm_property_create - create a new property type
3503 * @flags: flags specifying the property type
3504 * @name: name of the property
3505 * @num_values: number of pre-defined values
3507 * This creates a new generic drm property which can then be attached to a drm
3508 * object with drm_object_attach_property. The returned property object must be
3509 * freed with drm_property_destroy.
3511 * Note that the DRM core keeps a per-device list of properties and that, if
3512 * drm_mode_config_cleanup() is called, it will destroy all properties created
3516 * A pointer to the newly created property on success, NULL on failure.
3518 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3519 const char *name, int num_values)
3521 struct drm_property *property = NULL;
3524 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3528 property->dev = dev;
3531 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3532 if (!property->values)
3536 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3540 property->flags = flags;
3541 property->num_values = num_values;
3542 INIT_LIST_HEAD(&property->enum_list);
3545 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3546 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3549 list_add_tail(&property->head, &dev->mode_config.property_list);
3551 WARN_ON(!drm_property_type_valid(property));
3555 kfree(property->values);
3559 EXPORT_SYMBOL(drm_property_create);
3562 * drm_property_create_enum - create a new enumeration property type
3564 * @flags: flags specifying the property type
3565 * @name: name of the property
3566 * @props: enumeration lists with property values
3567 * @num_values: number of pre-defined values
3569 * This creates a new generic drm property which can then be attached to a drm
3570 * object with drm_object_attach_property. The returned property object must be
3571 * freed with drm_property_destroy.
3573 * Userspace is only allowed to set one of the predefined values for enumeration
3577 * A pointer to the newly created property on success, NULL on failure.
3579 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3581 const struct drm_prop_enum_list *props,
3584 struct drm_property *property;
3587 flags |= DRM_MODE_PROP_ENUM;
3589 property = drm_property_create(dev, flags, name, num_values);
3593 for (i = 0; i < num_values; i++) {
3594 ret = drm_property_add_enum(property, i,
3598 drm_property_destroy(dev, property);
3605 EXPORT_SYMBOL(drm_property_create_enum);
3608 * drm_property_create_bitmask - create a new bitmask property type
3610 * @flags: flags specifying the property type
3611 * @name: name of the property
3612 * @props: enumeration lists with property bitflags
3613 * @num_props: size of the @props array
3614 * @supported_bits: bitmask of all supported enumeration values
3616 * This creates a new bitmask drm property which can then be attached to a drm
3617 * object with drm_object_attach_property. The returned property object must be
3618 * freed with drm_property_destroy.
3620 * Compared to plain enumeration properties userspace is allowed to set any
3621 * or'ed together combination of the predefined property bitflag values
3624 * A pointer to the newly created property on success, NULL on failure.
3626 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3627 int flags, const char *name,
3628 const struct drm_prop_enum_list *props,
3630 uint64_t supported_bits)
3632 struct drm_property *property;
3633 int i, ret, index = 0;
3634 int num_values = hweight64(supported_bits);
3636 flags |= DRM_MODE_PROP_BITMASK;
3638 property = drm_property_create(dev, flags, name, num_values);
3641 for (i = 0; i < num_props; i++) {
3642 if (!(supported_bits & (1ULL << props[i].type)))
3645 if (WARN_ON(index >= num_values)) {
3646 drm_property_destroy(dev, property);
3650 ret = drm_property_add_enum(property, index++,
3654 drm_property_destroy(dev, property);
3661 EXPORT_SYMBOL(drm_property_create_bitmask);
3663 static struct drm_property *property_create_range(struct drm_device *dev,
3664 int flags, const char *name,
3665 uint64_t min, uint64_t max)
3667 struct drm_property *property;
3669 property = drm_property_create(dev, flags, name, 2);
3673 property->values[0] = min;
3674 property->values[1] = max;
3680 * drm_property_create_range - create a new ranged property type
3682 * @flags: flags specifying the property type
3683 * @name: name of the property
3684 * @min: minimum value of the property
3685 * @max: maximum value of the property
3687 * This creates a new generic drm property which can then be attached to a drm
3688 * object with drm_object_attach_property. The returned property object must be
3689 * freed with drm_property_destroy.
3691 * Userspace is allowed to set any integer value in the (min, max) range
3695 * A pointer to the newly created property on success, NULL on failure.
3697 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3699 uint64_t min, uint64_t max)
3701 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3704 EXPORT_SYMBOL(drm_property_create_range);
3706 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3707 int flags, const char *name,
3708 int64_t min, int64_t max)
3710 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3711 name, I642U64(min), I642U64(max));
3713 EXPORT_SYMBOL(drm_property_create_signed_range);
3715 struct drm_property *drm_property_create_object(struct drm_device *dev,
3716 int flags, const char *name, uint32_t type)
3718 struct drm_property *property;
3720 flags |= DRM_MODE_PROP_OBJECT;
3722 property = drm_property_create(dev, flags, name, 1);
3726 property->values[0] = type;
3730 EXPORT_SYMBOL(drm_property_create_object);
3733 * drm_property_add_enum - add a possible value to an enumeration property
3734 * @property: enumeration property to change
3735 * @index: index of the new enumeration
3736 * @value: value of the new enumeration
3737 * @name: symbolic name of the new enumeration
3739 * This functions adds enumerations to a property.
3741 * It's use is deprecated, drivers should use one of the more specific helpers
3742 * to directly create the property with all enumerations already attached.
3745 * Zero on success, error code on failure.
3747 int drm_property_add_enum(struct drm_property *property, int index,
3748 uint64_t value, const char *name)
3750 struct drm_property_enum *prop_enum;
3752 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3753 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3757 * Bitmask enum properties have the additional constraint of values
3760 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3764 if (!list_empty(&property->enum_list)) {
3765 list_for_each_entry(prop_enum, &property->enum_list, head) {
3766 if (prop_enum->value == value) {
3767 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3768 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3774 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3778 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3779 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3780 prop_enum->value = value;
3782 property->values[index] = value;
3783 list_add_tail(&prop_enum->head, &property->enum_list);
3786 EXPORT_SYMBOL(drm_property_add_enum);
3789 * drm_property_destroy - destroy a drm property
3791 * @property: property to destry
3793 * This function frees a property including any attached resources like
3794 * enumeration values.
3796 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3798 struct drm_property_enum *prop_enum, *pt;
3800 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3801 list_del(&prop_enum->head);
3805 if (property->num_values)
3806 kfree(property->values);
3807 drm_mode_object_put(dev, &property->base);
3808 list_del(&property->head);
3811 EXPORT_SYMBOL(drm_property_destroy);
3814 * drm_object_attach_property - attach a property to a modeset object
3815 * @obj: drm modeset object
3816 * @property: property to attach
3817 * @init_val: initial value of the property
3819 * This attaches the given property to the modeset object with the given initial
3820 * value. Currently this function cannot fail since the properties are stored in
3821 * a statically sized array.
3823 void drm_object_attach_property(struct drm_mode_object *obj,
3824 struct drm_property *property,
3827 int count = obj->properties->count;
3829 if (count == DRM_OBJECT_MAX_PROPERTY) {
3830 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3831 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3832 "you see this message on the same object type.\n",
3837 obj->properties->ids[count] = property->base.id;
3838 obj->properties->values[count] = init_val;
3839 obj->properties->count++;
3841 EXPORT_SYMBOL(drm_object_attach_property);
3844 * drm_object_property_set_value - set the value of a property
3845 * @obj: drm mode object to set property value for
3846 * @property: property to set
3847 * @val: value the property should be set to
3849 * This functions sets a given property on a given object. This function only
3850 * changes the software state of the property, it does not call into the
3851 * driver's ->set_property callback.
3854 * Zero on success, error code on failure.
3856 int drm_object_property_set_value(struct drm_mode_object *obj,
3857 struct drm_property *property, uint64_t val)
3861 for (i = 0; i < obj->properties->count; i++) {
3862 if (obj->properties->ids[i] == property->base.id) {
3863 obj->properties->values[i] = val;
3870 EXPORT_SYMBOL(drm_object_property_set_value);
3873 * drm_object_property_get_value - retrieve the value of a property
3874 * @obj: drm mode object to get property value from
3875 * @property: property to retrieve
3876 * @val: storage for the property value
3878 * This function retrieves the softare state of the given property for the given
3879 * property. Since there is no driver callback to retrieve the current property
3880 * value this might be out of sync with the hardware, depending upon the driver
3884 * Zero on success, error code on failure.
3886 int drm_object_property_get_value(struct drm_mode_object *obj,
3887 struct drm_property *property, uint64_t *val)
3891 for (i = 0; i < obj->properties->count; i++) {
3892 if (obj->properties->ids[i] == property->base.id) {
3893 *val = obj->properties->values[i];
3900 EXPORT_SYMBOL(drm_object_property_get_value);
3903 * drm_mode_getproperty_ioctl - get the property metadata
3906 * @file_priv: DRM file info
3908 * This function retrieves the metadata for a given property, like the different
3909 * possible values for an enum property or the limits for a range property.
3911 * Blob properties are special
3913 * Called by the user via ioctl.
3916 * Zero on success, negative errno on failure.
3918 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3919 void *data, struct drm_file *file_priv)
3921 struct drm_mode_get_property *out_resp = data;
3922 struct drm_property *property;
3924 int value_count = 0;
3927 struct drm_property_enum *prop_enum;
3928 struct drm_mode_property_enum __user *enum_ptr;
3929 uint64_t __user *values_ptr;
3931 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3934 drm_modeset_lock_all(dev);
3935 property = drm_property_find(dev, out_resp->prop_id);
3941 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3942 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3943 list_for_each_entry(prop_enum, &property->enum_list, head)
3947 value_count = property->num_values;
3949 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3950 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3951 out_resp->flags = property->flags;
3953 if ((out_resp->count_values >= value_count) && value_count) {
3954 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3955 for (i = 0; i < value_count; i++) {
3956 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3962 out_resp->count_values = value_count;
3964 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3965 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3966 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3968 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3969 list_for_each_entry(prop_enum, &property->enum_list, head) {
3971 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3976 if (copy_to_user(&enum_ptr[copied].name,
3977 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3984 out_resp->count_enum_blobs = enum_count;
3988 * NOTE: The idea seems to have been to use this to read all the blob
3989 * property values. But nothing ever added them to the corresponding
3990 * list, userspace always used the special-purpose get_blob ioctl to
3991 * read the value for a blob property. It also doesn't make a lot of
3992 * sense to return values here when everything else is just metadata for
3993 * the property itself.
3995 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
3996 out_resp->count_enum_blobs = 0;
3998 drm_modeset_unlock_all(dev);
4002 static struct drm_property_blob *
4003 drm_property_create_blob(struct drm_device *dev, size_t length,
4006 struct drm_property_blob *blob;
4009 if (!length || !data)
4012 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4016 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4022 blob->length = length;
4024 memcpy(blob->data, data, length);
4026 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
4030 static void drm_property_destroy_blob(struct drm_device *dev,
4031 struct drm_property_blob *blob)
4033 drm_mode_object_put(dev, &blob->base);
4034 list_del(&blob->head);
4039 * drm_mode_getblob_ioctl - get the contents of a blob property value
4042 * @file_priv: DRM file info
4044 * This function retrieves the contents of a blob property. The value stored in
4045 * an object's blob property is just a normal modeset object id.
4047 * Called by the user via ioctl.
4050 * Zero on success, negative errno on failure.
4052 int drm_mode_getblob_ioctl(struct drm_device *dev,
4053 void *data, struct drm_file *file_priv)
4055 struct drm_mode_get_blob *out_resp = data;
4056 struct drm_property_blob *blob;
4058 void __user *blob_ptr;
4060 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4063 drm_modeset_lock_all(dev);
4064 blob = drm_property_blob_find(dev, out_resp->blob_id);
4070 if (out_resp->length == blob->length) {
4071 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4072 if (copy_to_user(blob_ptr, blob->data, blob->length)){
4077 out_resp->length = blob->length;
4080 drm_modeset_unlock_all(dev);
4085 * drm_mode_connector_set_path_property - set tile property on connector
4086 * @connector: connector to set property on.
4087 * @path: path to use for property.
4089 * This creates a property to expose to userspace to specify a
4090 * connector path. This is mainly used for DisplayPort MST where
4091 * connectors have a topology and we want to allow userspace to give
4092 * them more meaningful names.
4095 * Zero on success, negative errno on failure.
4097 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4100 struct drm_device *dev = connector->dev;
4101 size_t size = strlen(path) + 1;
4104 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4106 if (!connector->path_blob_ptr)
4109 ret = drm_object_property_set_value(&connector->base,
4110 dev->mode_config.path_property,
4111 connector->path_blob_ptr->base.id);
4114 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4117 * drm_mode_connector_set_tile_property - set tile property on connector
4118 * @connector: connector to set property on.
4120 * This looks up the tile information for a connector, and creates a
4121 * property for userspace to parse if it exists. The property is of
4122 * the form of 8 integers using ':' as a separator.
4125 * Zero on success, errno on failure.
4127 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4129 struct drm_device *dev = connector->dev;
4133 if (connector->tile_blob_ptr)
4134 drm_property_destroy_blob(dev, connector->tile_blob_ptr);
4136 if (!connector->has_tile) {
4137 connector->tile_blob_ptr = NULL;
4138 ret = drm_object_property_set_value(&connector->base,
4139 dev->mode_config.tile_property, 0);
4143 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4144 connector->tile_group->id, connector->tile_is_single_monitor,
4145 connector->num_h_tile, connector->num_v_tile,
4146 connector->tile_h_loc, connector->tile_v_loc,
4147 connector->tile_h_size, connector->tile_v_size);
4148 size = strlen(tile) + 1;
4150 connector->tile_blob_ptr = drm_property_create_blob(connector->dev,
4152 if (!connector->tile_blob_ptr)
4155 ret = drm_object_property_set_value(&connector->base,
4156 dev->mode_config.tile_property,
4157 connector->tile_blob_ptr->base.id);
4160 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4163 * drm_mode_connector_update_edid_property - update the edid property of a connector
4164 * @connector: drm connector
4165 * @edid: new value of the edid property
4167 * This function creates a new blob modeset object and assigns its id to the
4168 * connector's edid property.
4171 * Zero on success, negative errno on failure.
4173 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4174 const struct edid *edid)
4176 struct drm_device *dev = connector->dev;
4180 /* ignore requests to set edid when overridden */
4181 if (connector->override_edid)
4184 if (connector->edid_blob_ptr)
4185 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4187 /* Delete edid, when there is none. */
4189 connector->edid_blob_ptr = NULL;
4190 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4194 size = EDID_LENGTH * (1 + edid->extensions);
4195 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4197 if (!connector->edid_blob_ptr)
4200 ret = drm_object_property_set_value(&connector->base,
4201 dev->mode_config.edid_property,
4202 connector->edid_blob_ptr->base.id);
4206 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4208 static bool drm_property_change_is_valid(struct drm_property *property,
4211 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4214 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4215 if (value < property->values[0] || value > property->values[1])
4218 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4219 int64_t svalue = U642I64(value);
4220 if (svalue < U642I64(property->values[0]) ||
4221 svalue > U642I64(property->values[1]))
4224 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4226 uint64_t valid_mask = 0;
4227 for (i = 0; i < property->num_values; i++)
4228 valid_mask |= (1ULL << property->values[i]);
4229 return !(value & ~valid_mask);
4230 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4231 /* Only the driver knows */
4233 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4234 struct drm_mode_object *obj;
4235 /* a zero value for an object property translates to null: */
4239 * NOTE: use _object_find() directly to bypass restriction on
4240 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4241 * object this could race against object finalization, so it
4242 * simply tells us that the object *was* valid. Which is good
4245 obj = _object_find(property->dev, value, property->values[0]);
4249 for (i = 0; i < property->num_values; i++)
4250 if (property->values[i] == value)
4257 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4260 * @file_priv: DRM file info
4262 * This function sets the current value for a connectors's property. It also
4263 * calls into a driver's ->set_property callback to update the hardware state
4265 * Called by the user via ioctl.
4268 * Zero on success, negative errno on failure.
4270 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4271 void *data, struct drm_file *file_priv)
4273 struct drm_mode_connector_set_property *conn_set_prop = data;
4274 struct drm_mode_obj_set_property obj_set_prop = {
4275 .value = conn_set_prop->value,
4276 .prop_id = conn_set_prop->prop_id,
4277 .obj_id = conn_set_prop->connector_id,
4278 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4281 /* It does all the locking and checking we need */
4282 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4285 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4286 struct drm_property *property,
4290 struct drm_connector *connector = obj_to_connector(obj);
4292 /* Do DPMS ourselves */
4293 if (property == connector->dev->mode_config.dpms_property) {
4294 if (connector->funcs->dpms)
4295 (*connector->funcs->dpms)(connector, (int)value);
4297 } else if (connector->funcs->set_property)
4298 ret = connector->funcs->set_property(connector, property, value);
4300 /* store the property value if successful */
4302 drm_object_property_set_value(&connector->base, property, value);
4306 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4307 struct drm_property *property,
4311 struct drm_crtc *crtc = obj_to_crtc(obj);
4313 if (crtc->funcs->set_property)
4314 ret = crtc->funcs->set_property(crtc, property, value);
4316 drm_object_property_set_value(obj, property, value);
4322 * drm_mode_plane_set_obj_prop - set the value of a property
4323 * @plane: drm plane object to set property value for
4324 * @property: property to set
4325 * @value: value the property should be set to
4327 * This functions sets a given property on a given plane object. This function
4328 * calls the driver's ->set_property callback and changes the software state of
4329 * the property if the callback succeeds.
4332 * Zero on success, error code on failure.
4334 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4335 struct drm_property *property,
4339 struct drm_mode_object *obj = &plane->base;
4341 if (plane->funcs->set_property)
4342 ret = plane->funcs->set_property(plane, property, value);
4344 drm_object_property_set_value(obj, property, value);
4348 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4351 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4354 * @file_priv: DRM file info
4356 * This function retrieves the current value for an object's property. Compared
4357 * to the connector specific ioctl this one is extended to also work on crtc and
4360 * Called by the user via ioctl.
4363 * Zero on success, negative errno on failure.
4365 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4366 struct drm_file *file_priv)
4368 struct drm_mode_obj_get_properties *arg = data;
4369 struct drm_mode_object *obj;
4373 int props_count = 0;
4374 uint32_t __user *props_ptr;
4375 uint64_t __user *prop_values_ptr;
4377 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4380 drm_modeset_lock_all(dev);
4382 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4387 if (!obj->properties) {
4392 props_count = obj->properties->count;
4394 /* This ioctl is called twice, once to determine how much space is
4395 * needed, and the 2nd time to fill it. */
4396 if ((arg->count_props >= props_count) && props_count) {
4398 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
4399 prop_values_ptr = (uint64_t __user *)(unsigned long)
4400 (arg->prop_values_ptr);
4401 for (i = 0; i < props_count; i++) {
4402 if (put_user(obj->properties->ids[i],
4403 props_ptr + copied)) {
4407 if (put_user(obj->properties->values[i],
4408 prop_values_ptr + copied)) {
4415 arg->count_props = props_count;
4417 drm_modeset_unlock_all(dev);
4422 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4425 * @file_priv: DRM file info
4427 * This function sets the current value for an object's property. It also calls
4428 * into a driver's ->set_property callback to update the hardware state.
4429 * Compared to the connector specific ioctl this one is extended to also work on
4430 * crtc and plane objects.
4432 * Called by the user via ioctl.
4435 * Zero on success, negative errno on failure.
4437 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4438 struct drm_file *file_priv)
4440 struct drm_mode_obj_set_property *arg = data;
4441 struct drm_mode_object *arg_obj;
4442 struct drm_mode_object *prop_obj;
4443 struct drm_property *property;
4447 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4450 drm_modeset_lock_all(dev);
4452 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4457 if (!arg_obj->properties)
4460 for (i = 0; i < arg_obj->properties->count; i++)
4461 if (arg_obj->properties->ids[i] == arg->prop_id)
4464 if (i == arg_obj->properties->count)
4467 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4468 DRM_MODE_OBJECT_PROPERTY);
4473 property = obj_to_property(prop_obj);
4475 if (!drm_property_change_is_valid(property, arg->value))
4478 switch (arg_obj->type) {
4479 case DRM_MODE_OBJECT_CONNECTOR:
4480 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4483 case DRM_MODE_OBJECT_CRTC:
4484 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4486 case DRM_MODE_OBJECT_PLANE:
4487 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4488 property, arg->value);
4493 drm_modeset_unlock_all(dev);
4498 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4499 * @connector: connector to attach
4500 * @encoder: encoder to attach @connector to
4502 * This function links up a connector to an encoder. Note that the routing
4503 * restrictions between encoders and crtcs are exposed to userspace through the
4504 * possible_clones and possible_crtcs bitmasks.
4507 * Zero on success, negative errno on failure.
4509 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4510 struct drm_encoder *encoder)
4514 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4515 if (connector->encoder_ids[i] == 0) {
4516 connector->encoder_ids[i] = encoder->base.id;
4522 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4525 * drm_mode_crtc_set_gamma_size - set the gamma table size
4526 * @crtc: CRTC to set the gamma table size for
4527 * @gamma_size: size of the gamma table
4529 * Drivers which support gamma tables should set this to the supported gamma
4530 * table size when initializing the CRTC. Currently the drm core only supports a
4531 * fixed gamma table size.
4534 * Zero on success, negative errno on failure.
4536 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4539 crtc->gamma_size = gamma_size;
4541 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4542 if (!crtc->gamma_store) {
4543 crtc->gamma_size = 0;
4549 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4552 * drm_mode_gamma_set_ioctl - set the gamma table
4555 * @file_priv: DRM file info
4557 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4558 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4560 * Called by the user via ioctl.
4563 * Zero on success, negative errno on failure.
4565 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4566 void *data, struct drm_file *file_priv)
4568 struct drm_mode_crtc_lut *crtc_lut = data;
4569 struct drm_crtc *crtc;
4570 void *r_base, *g_base, *b_base;
4574 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4577 drm_modeset_lock_all(dev);
4578 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4584 if (crtc->funcs->gamma_set == NULL) {
4589 /* memcpy into gamma store */
4590 if (crtc_lut->gamma_size != crtc->gamma_size) {
4595 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4596 r_base = crtc->gamma_store;
4597 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4602 g_base = r_base + size;
4603 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4608 b_base = g_base + size;
4609 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4614 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4617 drm_modeset_unlock_all(dev);
4623 * drm_mode_gamma_get_ioctl - get the gamma table
4626 * @file_priv: DRM file info
4628 * Copy the current gamma table into the storage provided. This also provides
4629 * the gamma table size the driver expects, which can be used to size the
4630 * allocated storage.
4632 * Called by the user via ioctl.
4635 * Zero on success, negative errno on failure.
4637 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4638 void *data, struct drm_file *file_priv)
4640 struct drm_mode_crtc_lut *crtc_lut = data;
4641 struct drm_crtc *crtc;
4642 void *r_base, *g_base, *b_base;
4646 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4649 drm_modeset_lock_all(dev);
4650 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4656 /* memcpy into gamma store */
4657 if (crtc_lut->gamma_size != crtc->gamma_size) {
4662 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4663 r_base = crtc->gamma_store;
4664 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4669 g_base = r_base + size;
4670 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4675 b_base = g_base + size;
4676 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4681 drm_modeset_unlock_all(dev);
4686 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4689 * @file_priv: DRM file info
4691 * This schedules an asynchronous update on a given CRTC, called page flip.
4692 * Optionally a drm event is generated to signal the completion of the event.
4693 * Generic drivers cannot assume that a pageflip with changed framebuffer
4694 * properties (including driver specific metadata like tiling layout) will work,
4695 * but some drivers support e.g. pixel format changes through the pageflip
4698 * Called by the user via ioctl.
4701 * Zero on success, negative errno on failure.
4703 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4704 void *data, struct drm_file *file_priv)
4706 struct drm_mode_crtc_page_flip *page_flip = data;
4707 struct drm_crtc *crtc;
4708 struct drm_framebuffer *fb = NULL;
4709 struct drm_pending_vblank_event *e = NULL;
4710 unsigned long flags;
4713 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4714 page_flip->reserved != 0)
4717 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4720 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4724 drm_modeset_lock_crtc(crtc, crtc->primary);
4725 if (crtc->primary->fb == NULL) {
4726 /* The framebuffer is currently unbound, presumably
4727 * due to a hotplug event, that userspace has not
4734 if (crtc->funcs->page_flip == NULL)
4737 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4743 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4747 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4748 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4753 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4755 spin_lock_irqsave(&dev->event_lock, flags);
4756 if (file_priv->event_space < sizeof e->event) {
4757 spin_unlock_irqrestore(&dev->event_lock, flags);
4760 file_priv->event_space -= sizeof e->event;
4761 spin_unlock_irqrestore(&dev->event_lock, flags);
4763 e = kzalloc(sizeof *e, GFP_KERNEL);
4765 spin_lock_irqsave(&dev->event_lock, flags);
4766 file_priv->event_space += sizeof e->event;
4767 spin_unlock_irqrestore(&dev->event_lock, flags);
4771 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4772 e->event.base.length = sizeof e->event;
4773 e->event.user_data = page_flip->user_data;
4774 e->base.event = &e->event.base;
4775 e->base.file_priv = file_priv;
4777 (void (*) (struct drm_pending_event *)) kfree;
4780 crtc->primary->old_fb = crtc->primary->fb;
4781 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4783 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4784 spin_lock_irqsave(&dev->event_lock, flags);
4785 file_priv->event_space += sizeof e->event;
4786 spin_unlock_irqrestore(&dev->event_lock, flags);
4789 /* Keep the old fb, don't unref it. */
4790 crtc->primary->old_fb = NULL;
4793 * Warn if the driver hasn't properly updated the crtc->fb
4794 * field to reflect that the new framebuffer is now used.
4795 * Failing to do so will screw with the reference counting
4798 WARN_ON(crtc->primary->fb != fb);
4799 /* Unref only the old framebuffer. */
4805 drm_framebuffer_unreference(fb);
4806 if (crtc->primary->old_fb)
4807 drm_framebuffer_unreference(crtc->primary->old_fb);
4808 crtc->primary->old_fb = NULL;
4809 drm_modeset_unlock_crtc(crtc);
4815 * drm_mode_config_reset - call ->reset callbacks
4818 * This functions calls all the crtc's, encoder's and connector's ->reset
4819 * callback. Drivers can use this in e.g. their driver load or resume code to
4820 * reset hardware and software state.
4822 void drm_mode_config_reset(struct drm_device *dev)
4824 struct drm_crtc *crtc;
4825 struct drm_plane *plane;
4826 struct drm_encoder *encoder;
4827 struct drm_connector *connector;
4829 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4830 if (plane->funcs->reset)
4831 plane->funcs->reset(plane);
4833 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4834 if (crtc->funcs->reset)
4835 crtc->funcs->reset(crtc);
4837 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4838 if (encoder->funcs->reset)
4839 encoder->funcs->reset(encoder);
4841 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4842 connector->status = connector_status_unknown;
4844 if (connector->funcs->reset)
4845 connector->funcs->reset(connector);
4848 EXPORT_SYMBOL(drm_mode_config_reset);
4851 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4854 * @file_priv: DRM file info
4856 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4857 * TTM or something else entirely) and returns the resulting buffer handle. This
4858 * handle can then be wrapped up into a framebuffer modeset object.
4860 * Note that userspace is not allowed to use such objects for render
4861 * acceleration - drivers must create their own private ioctls for such a use
4864 * Called by the user via ioctl.
4867 * Zero on success, negative errno on failure.
4869 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4870 void *data, struct drm_file *file_priv)
4872 struct drm_mode_create_dumb *args = data;
4873 u32 cpp, stride, size;
4875 if (!dev->driver->dumb_create)
4877 if (!args->width || !args->height || !args->bpp)
4880 /* overflow checks for 32bit size calculations */
4881 /* NOTE: DIV_ROUND_UP() can overflow */
4882 cpp = DIV_ROUND_UP(args->bpp, 8);
4883 if (!cpp || cpp > 0xffffffffU / args->width)
4885 stride = cpp * args->width;
4886 if (args->height > 0xffffffffU / stride)
4889 /* test for wrap-around */
4890 size = args->height * stride;
4891 if (PAGE_ALIGN(size) == 0)
4895 * handle, pitch and size are output parameters. Zero them out to
4896 * prevent drivers from accidentally using uninitialized data. Since
4897 * not all existing userspace is clearing these fields properly we
4898 * cannot reject IOCTL with garbage in them.
4904 return dev->driver->dumb_create(file_priv, dev, args);
4908 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4911 * @file_priv: DRM file info
4913 * Allocate an offset in the drm device node's address space to be able to
4914 * memory map a dumb buffer.
4916 * Called by the user via ioctl.
4919 * Zero on success, negative errno on failure.
4921 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4922 void *data, struct drm_file *file_priv)
4924 struct drm_mode_map_dumb *args = data;
4926 /* call driver ioctl to get mmap offset */
4927 if (!dev->driver->dumb_map_offset)
4930 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4934 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4937 * @file_priv: DRM file info
4939 * This destroys the userspace handle for the given dumb backing storage buffer.
4940 * Since buffer objects must be reference counted in the kernel a buffer object
4941 * won't be immediately freed if a framebuffer modeset object still uses it.
4943 * Called by the user via ioctl.
4946 * Zero on success, negative errno on failure.
4948 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4949 void *data, struct drm_file *file_priv)
4951 struct drm_mode_destroy_dumb *args = data;
4953 if (!dev->driver->dumb_destroy)
4956 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4960 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4961 * @format: pixel format (DRM_FORMAT_*)
4962 * @depth: storage for the depth value
4963 * @bpp: storage for the bpp value
4965 * This only supports RGB formats here for compat with code that doesn't use
4966 * pixel formats directly yet.
4968 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4973 case DRM_FORMAT_RGB332:
4974 case DRM_FORMAT_BGR233:
4978 case DRM_FORMAT_XRGB1555:
4979 case DRM_FORMAT_XBGR1555:
4980 case DRM_FORMAT_RGBX5551:
4981 case DRM_FORMAT_BGRX5551:
4982 case DRM_FORMAT_ARGB1555:
4983 case DRM_FORMAT_ABGR1555:
4984 case DRM_FORMAT_RGBA5551:
4985 case DRM_FORMAT_BGRA5551:
4989 case DRM_FORMAT_RGB565:
4990 case DRM_FORMAT_BGR565:
4994 case DRM_FORMAT_RGB888:
4995 case DRM_FORMAT_BGR888:
4999 case DRM_FORMAT_XRGB8888:
5000 case DRM_FORMAT_XBGR8888:
5001 case DRM_FORMAT_RGBX8888:
5002 case DRM_FORMAT_BGRX8888:
5006 case DRM_FORMAT_XRGB2101010:
5007 case DRM_FORMAT_XBGR2101010:
5008 case DRM_FORMAT_RGBX1010102:
5009 case DRM_FORMAT_BGRX1010102:
5010 case DRM_FORMAT_ARGB2101010:
5011 case DRM_FORMAT_ABGR2101010:
5012 case DRM_FORMAT_RGBA1010102:
5013 case DRM_FORMAT_BGRA1010102:
5017 case DRM_FORMAT_ARGB8888:
5018 case DRM_FORMAT_ABGR8888:
5019 case DRM_FORMAT_RGBA8888:
5020 case DRM_FORMAT_BGRA8888:
5025 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5026 drm_get_format_name(format));
5032 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5035 * drm_format_num_planes - get the number of planes for format
5036 * @format: pixel format (DRM_FORMAT_*)
5039 * The number of planes used by the specified pixel format.
5041 int drm_format_num_planes(uint32_t format)
5044 case DRM_FORMAT_YUV410:
5045 case DRM_FORMAT_YVU410:
5046 case DRM_FORMAT_YUV411:
5047 case DRM_FORMAT_YVU411:
5048 case DRM_FORMAT_YUV420:
5049 case DRM_FORMAT_YVU420:
5050 case DRM_FORMAT_YUV422:
5051 case DRM_FORMAT_YVU422:
5052 case DRM_FORMAT_YUV444:
5053 case DRM_FORMAT_YVU444:
5055 case DRM_FORMAT_NV12:
5056 case DRM_FORMAT_NV21:
5057 case DRM_FORMAT_NV16:
5058 case DRM_FORMAT_NV61:
5059 case DRM_FORMAT_NV24:
5060 case DRM_FORMAT_NV42:
5066 EXPORT_SYMBOL(drm_format_num_planes);
5069 * drm_format_plane_cpp - determine the bytes per pixel value
5070 * @format: pixel format (DRM_FORMAT_*)
5071 * @plane: plane index
5074 * The bytes per pixel value for the specified plane.
5076 int drm_format_plane_cpp(uint32_t format, int plane)
5081 if (plane >= drm_format_num_planes(format))
5085 case DRM_FORMAT_YUYV:
5086 case DRM_FORMAT_YVYU:
5087 case DRM_FORMAT_UYVY:
5088 case DRM_FORMAT_VYUY:
5090 case DRM_FORMAT_NV12:
5091 case DRM_FORMAT_NV21:
5092 case DRM_FORMAT_NV16:
5093 case DRM_FORMAT_NV61:
5094 case DRM_FORMAT_NV24:
5095 case DRM_FORMAT_NV42:
5096 return plane ? 2 : 1;
5097 case DRM_FORMAT_YUV410:
5098 case DRM_FORMAT_YVU410:
5099 case DRM_FORMAT_YUV411:
5100 case DRM_FORMAT_YVU411:
5101 case DRM_FORMAT_YUV420:
5102 case DRM_FORMAT_YVU420:
5103 case DRM_FORMAT_YUV422:
5104 case DRM_FORMAT_YVU422:
5105 case DRM_FORMAT_YUV444:
5106 case DRM_FORMAT_YVU444:
5109 drm_fb_get_bpp_depth(format, &depth, &bpp);
5113 EXPORT_SYMBOL(drm_format_plane_cpp);
5116 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5117 * @format: pixel format (DRM_FORMAT_*)
5120 * The horizontal chroma subsampling factor for the
5121 * specified pixel format.
5123 int drm_format_horz_chroma_subsampling(uint32_t format)
5126 case DRM_FORMAT_YUV411:
5127 case DRM_FORMAT_YVU411:
5128 case DRM_FORMAT_YUV410:
5129 case DRM_FORMAT_YVU410:
5131 case DRM_FORMAT_YUYV:
5132 case DRM_FORMAT_YVYU:
5133 case DRM_FORMAT_UYVY:
5134 case DRM_FORMAT_VYUY:
5135 case DRM_FORMAT_NV12:
5136 case DRM_FORMAT_NV21:
5137 case DRM_FORMAT_NV16:
5138 case DRM_FORMAT_NV61:
5139 case DRM_FORMAT_YUV422:
5140 case DRM_FORMAT_YVU422:
5141 case DRM_FORMAT_YUV420:
5142 case DRM_FORMAT_YVU420:
5148 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5151 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5152 * @format: pixel format (DRM_FORMAT_*)
5155 * The vertical chroma subsampling factor for the
5156 * specified pixel format.
5158 int drm_format_vert_chroma_subsampling(uint32_t format)
5161 case DRM_FORMAT_YUV410:
5162 case DRM_FORMAT_YVU410:
5164 case DRM_FORMAT_YUV420:
5165 case DRM_FORMAT_YVU420:
5166 case DRM_FORMAT_NV12:
5167 case DRM_FORMAT_NV21:
5173 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5176 * drm_rotation_simplify() - Try to simplify the rotation
5177 * @rotation: Rotation to be simplified
5178 * @supported_rotations: Supported rotations
5180 * Attempt to simplify the rotation to a form that is supported.
5181 * Eg. if the hardware supports everything except DRM_REFLECT_X
5182 * one could call this function like this:
5184 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5185 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5186 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5188 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5189 * transforms the hardware supports, this function may not
5190 * be able to produce a supported transform, so the caller should
5191 * check the result afterwards.
5193 unsigned int drm_rotation_simplify(unsigned int rotation,
5194 unsigned int supported_rotations)
5196 if (rotation & ~supported_rotations) {
5197 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5198 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5203 EXPORT_SYMBOL(drm_rotation_simplify);
5206 * drm_mode_config_init - initialize DRM mode_configuration structure
5209 * Initialize @dev's mode_config structure, used for tracking the graphics
5210 * configuration of @dev.
5212 * Since this initializes the modeset locks, no locking is possible. Which is no
5213 * problem, since this should happen single threaded at init time. It is the
5214 * driver's problem to ensure this guarantee.
5217 void drm_mode_config_init(struct drm_device *dev)
5219 mutex_init(&dev->mode_config.mutex);
5220 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5221 mutex_init(&dev->mode_config.idr_mutex);
5222 mutex_init(&dev->mode_config.fb_lock);
5223 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5224 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5225 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5226 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
5227 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5228 INIT_LIST_HEAD(&dev->mode_config.property_list);
5229 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5230 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5231 idr_init(&dev->mode_config.crtc_idr);
5232 idr_init(&dev->mode_config.tile_idr);
5234 drm_modeset_lock_all(dev);
5235 drm_mode_create_standard_connector_properties(dev);
5236 drm_mode_create_standard_plane_properties(dev);
5237 drm_modeset_unlock_all(dev);
5239 /* Just to be sure */
5240 dev->mode_config.num_fb = 0;
5241 dev->mode_config.num_connector = 0;
5242 dev->mode_config.num_crtc = 0;
5243 dev->mode_config.num_encoder = 0;
5244 dev->mode_config.num_overlay_plane = 0;
5245 dev->mode_config.num_total_plane = 0;
5247 EXPORT_SYMBOL(drm_mode_config_init);
5250 * drm_mode_config_cleanup - free up DRM mode_config info
5253 * Free up all the connectors and CRTCs associated with this DRM device, then
5254 * free up the framebuffers and associated buffer objects.
5256 * Note that since this /should/ happen single-threaded at driver/device
5257 * teardown time, no locking is required. It's the driver's job to ensure that
5258 * this guarantee actually holds true.
5260 * FIXME: cleanup any dangling user buffer objects too
5262 void drm_mode_config_cleanup(struct drm_device *dev)
5264 struct drm_connector *connector, *ot;
5265 struct drm_crtc *crtc, *ct;
5266 struct drm_encoder *encoder, *enct;
5267 struct drm_bridge *bridge, *brt;
5268 struct drm_framebuffer *fb, *fbt;
5269 struct drm_property *property, *pt;
5270 struct drm_property_blob *blob, *bt;
5271 struct drm_plane *plane, *plt;
5273 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5275 encoder->funcs->destroy(encoder);
5278 list_for_each_entry_safe(bridge, brt,
5279 &dev->mode_config.bridge_list, head) {
5280 bridge->funcs->destroy(bridge);
5283 list_for_each_entry_safe(connector, ot,
5284 &dev->mode_config.connector_list, head) {
5285 connector->funcs->destroy(connector);
5288 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5290 drm_property_destroy(dev, property);
5293 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5295 drm_property_destroy_blob(dev, blob);
5299 * Single-threaded teardown context, so it's not required to grab the
5300 * fb_lock to protect against concurrent fb_list access. Contrary, it
5301 * would actually deadlock with the drm_framebuffer_cleanup function.
5303 * Also, if there are any framebuffers left, that's a driver leak now,
5304 * so politely WARN about this.
5306 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5307 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5308 drm_framebuffer_remove(fb);
5311 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5313 plane->funcs->destroy(plane);
5316 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5317 crtc->funcs->destroy(crtc);
5320 idr_destroy(&dev->mode_config.tile_idr);
5321 idr_destroy(&dev->mode_config.crtc_idr);
5322 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5324 EXPORT_SYMBOL(drm_mode_config_cleanup);
5326 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5327 unsigned int supported_rotations)
5329 static const struct drm_prop_enum_list props[] = {
5330 { DRM_ROTATE_0, "rotate-0" },
5331 { DRM_ROTATE_90, "rotate-90" },
5332 { DRM_ROTATE_180, "rotate-180" },
5333 { DRM_ROTATE_270, "rotate-270" },
5334 { DRM_REFLECT_X, "reflect-x" },
5335 { DRM_REFLECT_Y, "reflect-y" },
5338 return drm_property_create_bitmask(dev, 0, "rotation",
5339 props, ARRAY_SIZE(props),
5340 supported_rotations);
5342 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5347 * Tile groups are used to represent tiled monitors with a unique
5348 * integer identifier. Tiled monitors using DisplayID v1.3 have
5349 * a unique 8-byte handle, we store this in a tile group, so we
5350 * have a common identifier for all tiles in a monitor group.
5352 static void drm_tile_group_free(struct kref *kref)
5354 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5355 struct drm_device *dev = tg->dev;
5356 mutex_lock(&dev->mode_config.idr_mutex);
5357 idr_remove(&dev->mode_config.tile_idr, tg->id);
5358 mutex_unlock(&dev->mode_config.idr_mutex);
5363 * drm_mode_put_tile_group - drop a reference to a tile group.
5365 * @tg: tile group to drop reference to.
5367 * drop reference to tile group and free if 0.
5369 void drm_mode_put_tile_group(struct drm_device *dev,
5370 struct drm_tile_group *tg)
5372 kref_put(&tg->refcount, drm_tile_group_free);
5376 * drm_mode_get_tile_group - get a reference to an existing tile group
5378 * @topology: 8-bytes unique per monitor.
5380 * Use the unique bytes to get a reference to an existing tile group.
5383 * tile group or NULL if not found.
5385 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5388 struct drm_tile_group *tg;
5390 mutex_lock(&dev->mode_config.idr_mutex);
5391 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5392 if (!memcmp(tg->group_data, topology, 8)) {
5393 if (!kref_get_unless_zero(&tg->refcount))
5395 mutex_unlock(&dev->mode_config.idr_mutex);
5399 mutex_unlock(&dev->mode_config.idr_mutex);
5404 * drm_mode_create_tile_group - create a tile group from a displayid description
5406 * @topology: 8-bytes unique per monitor.
5408 * Create a tile group for the unique monitor, and get a unique
5409 * identifier for the tile group.
5412 * new tile group or error.
5414 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5417 struct drm_tile_group *tg;
5420 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5422 return ERR_PTR(-ENOMEM);
5424 kref_init(&tg->refcount);
5425 memcpy(tg->group_data, topology, 8);
5428 mutex_lock(&dev->mode_config.idr_mutex);
5429 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5437 mutex_unlock(&dev->mode_config.idr_mutex);