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 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
914 drm_mode_remove(connector, mode);
916 list_for_each_entry_safe(mode, t, &connector->modes, head)
917 drm_mode_remove(connector, mode);
919 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
920 connector->connector_type_id);
922 drm_mode_object_put(dev, &connector->base);
923 kfree(connector->name);
924 connector->name = NULL;
925 list_del(&connector->head);
926 dev->mode_config.num_connector--;
928 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
929 if (connector->state && connector->funcs->atomic_destroy_state)
930 connector->funcs->atomic_destroy_state(connector,
933 memset(connector, 0, sizeof(*connector));
935 EXPORT_SYMBOL(drm_connector_cleanup);
938 * drm_connector_index - find the index of a registered connector
939 * @connector: connector to find index for
941 * Given a registered connector, return the index of that connector within a DRM
942 * device's list of connectors.
944 unsigned int drm_connector_index(struct drm_connector *connector)
946 unsigned int index = 0;
947 struct drm_connector *tmp;
948 struct drm_mode_config *config = &connector->dev->mode_config;
950 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
952 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
953 if (tmp == connector)
961 EXPORT_SYMBOL(drm_connector_index);
964 * drm_connector_register - register a connector
965 * @connector: the connector to register
967 * Register userspace interfaces for a connector
970 * Zero on success, error code on failure.
972 int drm_connector_register(struct drm_connector *connector)
976 drm_mode_object_register(connector->dev, &connector->base);
978 ret = drm_sysfs_connector_add(connector);
982 ret = drm_debugfs_connector_add(connector);
984 drm_sysfs_connector_remove(connector);
990 EXPORT_SYMBOL(drm_connector_register);
993 * drm_connector_unregister - unregister a connector
994 * @connector: the connector to unregister
996 * Unregister userspace interfaces for a connector
998 void drm_connector_unregister(struct drm_connector *connector)
1000 drm_sysfs_connector_remove(connector);
1001 drm_debugfs_connector_remove(connector);
1003 EXPORT_SYMBOL(drm_connector_unregister);
1007 * drm_connector_unplug_all - unregister connector userspace interfaces
1010 * This function unregisters all connector userspace interfaces in sysfs. Should
1011 * be call when the device is disconnected, e.g. from an usb driver's
1012 * ->disconnect callback.
1014 void drm_connector_unplug_all(struct drm_device *dev)
1016 struct drm_connector *connector;
1018 /* taking the mode config mutex ends up in a clash with sysfs */
1019 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1020 drm_connector_unregister(connector);
1023 EXPORT_SYMBOL(drm_connector_unplug_all);
1026 * drm_bridge_init - initialize a drm transcoder/bridge
1028 * @bridge: transcoder/bridge to set up
1029 * @funcs: bridge function table
1031 * Initialises a preallocated bridge. Bridges should be
1032 * subclassed as part of driver connector objects.
1035 * Zero on success, error code on failure.
1037 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1038 const struct drm_bridge_funcs *funcs)
1042 drm_modeset_lock_all(dev);
1044 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1049 bridge->funcs = funcs;
1051 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1052 dev->mode_config.num_bridge++;
1055 drm_modeset_unlock_all(dev);
1058 EXPORT_SYMBOL(drm_bridge_init);
1061 * drm_bridge_cleanup - cleans up an initialised bridge
1062 * @bridge: bridge to cleanup
1064 * Cleans up the bridge but doesn't free the object.
1066 void drm_bridge_cleanup(struct drm_bridge *bridge)
1068 struct drm_device *dev = bridge->dev;
1070 drm_modeset_lock_all(dev);
1071 drm_mode_object_put(dev, &bridge->base);
1072 list_del(&bridge->head);
1073 dev->mode_config.num_bridge--;
1074 drm_modeset_unlock_all(dev);
1076 memset(bridge, 0, sizeof(*bridge));
1078 EXPORT_SYMBOL(drm_bridge_cleanup);
1081 * drm_encoder_init - Init a preallocated encoder
1083 * @encoder: the encoder to init
1084 * @funcs: callbacks for this encoder
1085 * @encoder_type: user visible type of the encoder
1087 * Initialises a preallocated encoder. Encoder should be
1088 * subclassed as part of driver encoder objects.
1091 * Zero on success, error code on failure.
1093 int drm_encoder_init(struct drm_device *dev,
1094 struct drm_encoder *encoder,
1095 const struct drm_encoder_funcs *funcs,
1100 drm_modeset_lock_all(dev);
1102 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1107 encoder->encoder_type = encoder_type;
1108 encoder->funcs = funcs;
1109 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1110 drm_encoder_enum_list[encoder_type].name,
1112 if (!encoder->name) {
1117 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1118 dev->mode_config.num_encoder++;
1122 drm_mode_object_put(dev, &encoder->base);
1125 drm_modeset_unlock_all(dev);
1129 EXPORT_SYMBOL(drm_encoder_init);
1132 * drm_encoder_cleanup - cleans up an initialised encoder
1133 * @encoder: encoder to cleanup
1135 * Cleans up the encoder but doesn't free the object.
1137 void drm_encoder_cleanup(struct drm_encoder *encoder)
1139 struct drm_device *dev = encoder->dev;
1140 drm_modeset_lock_all(dev);
1141 drm_mode_object_put(dev, &encoder->base);
1142 kfree(encoder->name);
1143 list_del(&encoder->head);
1144 dev->mode_config.num_encoder--;
1145 drm_modeset_unlock_all(dev);
1147 memset(encoder, 0, sizeof(*encoder));
1149 EXPORT_SYMBOL(drm_encoder_cleanup);
1152 * drm_universal_plane_init - Initialize a new universal plane object
1154 * @plane: plane object to init
1155 * @possible_crtcs: bitmask of possible CRTCs
1156 * @funcs: callbacks for the new plane
1157 * @formats: array of supported formats (%DRM_FORMAT_*)
1158 * @format_count: number of elements in @formats
1159 * @type: type of plane (overlay, primary, cursor)
1161 * Initializes a plane object of type @type.
1164 * Zero on success, error code on failure.
1166 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1167 unsigned long possible_crtcs,
1168 const struct drm_plane_funcs *funcs,
1169 const uint32_t *formats, uint32_t format_count,
1170 enum drm_plane_type type)
1174 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1178 drm_modeset_lock_init(&plane->mutex);
1180 plane->base.properties = &plane->properties;
1182 plane->funcs = funcs;
1183 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1185 if (!plane->format_types) {
1186 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1187 drm_mode_object_put(dev, &plane->base);
1191 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1192 plane->format_count = format_count;
1193 plane->possible_crtcs = possible_crtcs;
1196 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1197 dev->mode_config.num_total_plane++;
1198 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1199 dev->mode_config.num_overlay_plane++;
1201 drm_object_attach_property(&plane->base,
1202 dev->mode_config.plane_type_property,
1207 EXPORT_SYMBOL(drm_universal_plane_init);
1210 * drm_plane_init - Initialize a legacy plane
1212 * @plane: plane object to init
1213 * @possible_crtcs: bitmask of possible CRTCs
1214 * @funcs: callbacks for the new plane
1215 * @formats: array of supported formats (%DRM_FORMAT_*)
1216 * @format_count: number of elements in @formats
1217 * @is_primary: plane type (primary vs overlay)
1219 * Legacy API to initialize a DRM plane.
1221 * New drivers should call drm_universal_plane_init() instead.
1224 * Zero on success, error code on failure.
1226 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1227 unsigned long possible_crtcs,
1228 const struct drm_plane_funcs *funcs,
1229 const uint32_t *formats, uint32_t format_count,
1232 enum drm_plane_type type;
1234 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1235 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1236 formats, format_count, type);
1238 EXPORT_SYMBOL(drm_plane_init);
1241 * drm_plane_cleanup - Clean up the core plane usage
1242 * @plane: plane to cleanup
1244 * This function cleans up @plane and removes it from the DRM mode setting
1245 * core. Note that the function does *not* free the plane structure itself,
1246 * this is the responsibility of the caller.
1248 void drm_plane_cleanup(struct drm_plane *plane)
1250 struct drm_device *dev = plane->dev;
1252 drm_modeset_lock_all(dev);
1253 kfree(plane->format_types);
1254 drm_mode_object_put(dev, &plane->base);
1256 BUG_ON(list_empty(&plane->head));
1258 list_del(&plane->head);
1259 dev->mode_config.num_total_plane--;
1260 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1261 dev->mode_config.num_overlay_plane--;
1262 drm_modeset_unlock_all(dev);
1264 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1265 if (plane->state && plane->funcs->atomic_destroy_state)
1266 plane->funcs->atomic_destroy_state(plane, plane->state);
1268 memset(plane, 0, sizeof(*plane));
1270 EXPORT_SYMBOL(drm_plane_cleanup);
1273 * drm_plane_index - find the index of a registered plane
1274 * @plane: plane to find index for
1276 * Given a registered plane, return the index of that CRTC within a DRM
1277 * device's list of planes.
1279 unsigned int drm_plane_index(struct drm_plane *plane)
1281 unsigned int index = 0;
1282 struct drm_plane *tmp;
1284 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1293 EXPORT_SYMBOL(drm_plane_index);
1296 * drm_plane_force_disable - Forcibly disable a plane
1297 * @plane: plane to disable
1299 * Forces the plane to be disabled.
1301 * Used when the plane's current framebuffer is destroyed,
1302 * and when restoring fbdev mode.
1304 void drm_plane_force_disable(struct drm_plane *plane)
1311 plane->old_fb = plane->fb;
1312 ret = plane->funcs->disable_plane(plane);
1314 DRM_ERROR("failed to disable plane with busy fb\n");
1315 plane->old_fb = NULL;
1318 /* disconnect the plane from the fb and crtc: */
1319 __drm_framebuffer_unreference(plane->old_fb);
1320 plane->old_fb = NULL;
1324 EXPORT_SYMBOL(drm_plane_force_disable);
1326 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1328 struct drm_property *edid;
1329 struct drm_property *dpms;
1330 struct drm_property *dev_path;
1333 * Standard properties (apply to all connectors)
1335 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1336 DRM_MODE_PROP_IMMUTABLE,
1338 dev->mode_config.edid_property = edid;
1340 dpms = drm_property_create_enum(dev, 0,
1341 "DPMS", drm_dpms_enum_list,
1342 ARRAY_SIZE(drm_dpms_enum_list));
1343 dev->mode_config.dpms_property = dpms;
1345 dev_path = drm_property_create(dev,
1346 DRM_MODE_PROP_BLOB |
1347 DRM_MODE_PROP_IMMUTABLE,
1349 dev->mode_config.path_property = dev_path;
1354 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1356 struct drm_property *type;
1359 * Standard properties (apply to all planes)
1361 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1362 "type", drm_plane_type_enum_list,
1363 ARRAY_SIZE(drm_plane_type_enum_list));
1364 dev->mode_config.plane_type_property = type;
1370 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1373 * Called by a driver the first time a DVI-I connector is made.
1375 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1377 struct drm_property *dvi_i_selector;
1378 struct drm_property *dvi_i_subconnector;
1380 if (dev->mode_config.dvi_i_select_subconnector_property)
1384 drm_property_create_enum(dev, 0,
1385 "select subconnector",
1386 drm_dvi_i_select_enum_list,
1387 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1388 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1390 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1392 drm_dvi_i_subconnector_enum_list,
1393 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1394 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1398 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1401 * drm_create_tv_properties - create TV specific connector properties
1403 * @num_modes: number of different TV formats (modes) supported
1404 * @modes: array of pointers to strings containing name of each format
1406 * Called by a driver's TV initialization routine, this function creates
1407 * the TV specific connector properties for a given device. Caller is
1408 * responsible for allocating a list of format names and passing them to
1411 int drm_mode_create_tv_properties(struct drm_device *dev,
1412 unsigned int num_modes,
1415 struct drm_property *tv_selector;
1416 struct drm_property *tv_subconnector;
1419 if (dev->mode_config.tv_select_subconnector_property)
1423 * Basic connector properties
1425 tv_selector = drm_property_create_enum(dev, 0,
1426 "select subconnector",
1427 drm_tv_select_enum_list,
1428 ARRAY_SIZE(drm_tv_select_enum_list));
1429 dev->mode_config.tv_select_subconnector_property = tv_selector;
1432 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1434 drm_tv_subconnector_enum_list,
1435 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1436 dev->mode_config.tv_subconnector_property = tv_subconnector;
1439 * Other, TV specific properties: margins & TV modes.
1441 dev->mode_config.tv_left_margin_property =
1442 drm_property_create_range(dev, 0, "left margin", 0, 100);
1444 dev->mode_config.tv_right_margin_property =
1445 drm_property_create_range(dev, 0, "right margin", 0, 100);
1447 dev->mode_config.tv_top_margin_property =
1448 drm_property_create_range(dev, 0, "top margin", 0, 100);
1450 dev->mode_config.tv_bottom_margin_property =
1451 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1453 dev->mode_config.tv_mode_property =
1454 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1456 for (i = 0; i < num_modes; i++)
1457 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1460 dev->mode_config.tv_brightness_property =
1461 drm_property_create_range(dev, 0, "brightness", 0, 100);
1463 dev->mode_config.tv_contrast_property =
1464 drm_property_create_range(dev, 0, "contrast", 0, 100);
1466 dev->mode_config.tv_flicker_reduction_property =
1467 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1469 dev->mode_config.tv_overscan_property =
1470 drm_property_create_range(dev, 0, "overscan", 0, 100);
1472 dev->mode_config.tv_saturation_property =
1473 drm_property_create_range(dev, 0, "saturation", 0, 100);
1475 dev->mode_config.tv_hue_property =
1476 drm_property_create_range(dev, 0, "hue", 0, 100);
1480 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1483 * drm_mode_create_scaling_mode_property - create scaling mode property
1486 * Called by a driver the first time it's needed, must be attached to desired
1489 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1491 struct drm_property *scaling_mode;
1493 if (dev->mode_config.scaling_mode_property)
1497 drm_property_create_enum(dev, 0, "scaling mode",
1498 drm_scaling_mode_enum_list,
1499 ARRAY_SIZE(drm_scaling_mode_enum_list));
1501 dev->mode_config.scaling_mode_property = scaling_mode;
1505 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1508 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1511 * Called by a driver the first time it's needed, must be attached to desired
1515 * Zero on success, negative errno on failure.
1517 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1519 if (dev->mode_config.aspect_ratio_property)
1522 dev->mode_config.aspect_ratio_property =
1523 drm_property_create_enum(dev, 0, "aspect ratio",
1524 drm_aspect_ratio_enum_list,
1525 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1527 if (dev->mode_config.aspect_ratio_property == NULL)
1532 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1535 * drm_mode_create_dirty_property - create dirty property
1538 * Called by a driver the first time it's needed, must be attached to desired
1541 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1543 struct drm_property *dirty_info;
1545 if (dev->mode_config.dirty_info_property)
1549 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1551 drm_dirty_info_enum_list,
1552 ARRAY_SIZE(drm_dirty_info_enum_list));
1553 dev->mode_config.dirty_info_property = dirty_info;
1557 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1560 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1563 * Create the the suggested x/y offset property for connectors.
1565 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1567 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1570 dev->mode_config.suggested_x_property =
1571 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1573 dev->mode_config.suggested_y_property =
1574 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1576 if (dev->mode_config.suggested_x_property == NULL ||
1577 dev->mode_config.suggested_y_property == NULL)
1581 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1583 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1585 uint32_t total_objects = 0;
1587 total_objects += dev->mode_config.num_crtc;
1588 total_objects += dev->mode_config.num_connector;
1589 total_objects += dev->mode_config.num_encoder;
1590 total_objects += dev->mode_config.num_bridge;
1592 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1593 if (!group->id_list)
1596 group->num_crtcs = 0;
1597 group->num_connectors = 0;
1598 group->num_encoders = 0;
1599 group->num_bridges = 0;
1603 void drm_mode_group_destroy(struct drm_mode_group *group)
1605 kfree(group->id_list);
1606 group->id_list = NULL;
1610 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1611 * the drm core's responsibility to set up mode control groups.
1613 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1614 struct drm_mode_group *group)
1616 struct drm_crtc *crtc;
1617 struct drm_encoder *encoder;
1618 struct drm_connector *connector;
1619 struct drm_bridge *bridge;
1622 if ((ret = drm_mode_group_init(dev, group)))
1625 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1626 group->id_list[group->num_crtcs++] = crtc->base.id;
1628 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1629 group->id_list[group->num_crtcs + group->num_encoders++] =
1632 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1633 group->id_list[group->num_crtcs + group->num_encoders +
1634 group->num_connectors++] = connector->base.id;
1636 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1637 group->id_list[group->num_crtcs + group->num_encoders +
1638 group->num_connectors + group->num_bridges++] =
1643 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1645 void drm_reinit_primary_mode_group(struct drm_device *dev)
1647 drm_modeset_lock_all(dev);
1648 drm_mode_group_destroy(&dev->primary->mode_group);
1649 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1650 drm_modeset_unlock_all(dev);
1652 EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1655 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1656 * @out: drm_mode_modeinfo struct to return to the user
1657 * @in: drm_display_mode to use
1659 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1662 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1663 const struct drm_display_mode *in)
1665 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1666 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1667 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1668 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1669 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1670 "timing values too large for mode info\n");
1672 out->clock = in->clock;
1673 out->hdisplay = in->hdisplay;
1674 out->hsync_start = in->hsync_start;
1675 out->hsync_end = in->hsync_end;
1676 out->htotal = in->htotal;
1677 out->hskew = in->hskew;
1678 out->vdisplay = in->vdisplay;
1679 out->vsync_start = in->vsync_start;
1680 out->vsync_end = in->vsync_end;
1681 out->vtotal = in->vtotal;
1682 out->vscan = in->vscan;
1683 out->vrefresh = in->vrefresh;
1684 out->flags = in->flags;
1685 out->type = in->type;
1686 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1687 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1691 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1692 * @out: drm_display_mode to return to the user
1693 * @in: drm_mode_modeinfo to use
1695 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1699 * Zero on success, negative errno on failure.
1701 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1702 const struct drm_mode_modeinfo *in)
1704 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1707 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1710 out->clock = in->clock;
1711 out->hdisplay = in->hdisplay;
1712 out->hsync_start = in->hsync_start;
1713 out->hsync_end = in->hsync_end;
1714 out->htotal = in->htotal;
1715 out->hskew = in->hskew;
1716 out->vdisplay = in->vdisplay;
1717 out->vsync_start = in->vsync_start;
1718 out->vsync_end = in->vsync_end;
1719 out->vtotal = in->vtotal;
1720 out->vscan = in->vscan;
1721 out->vrefresh = in->vrefresh;
1722 out->flags = in->flags;
1723 out->type = in->type;
1724 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1725 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1731 * drm_mode_getresources - get graphics configuration
1732 * @dev: drm device for the ioctl
1733 * @data: data pointer for the ioctl
1734 * @file_priv: drm file for the ioctl call
1736 * Construct a set of configuration description structures and return
1737 * them to the user, including CRTC, connector and framebuffer configuration.
1739 * Called by the user via ioctl.
1742 * Zero on success, negative errno on failure.
1744 int drm_mode_getresources(struct drm_device *dev, void *data,
1745 struct drm_file *file_priv)
1747 struct drm_mode_card_res *card_res = data;
1748 struct list_head *lh;
1749 struct drm_framebuffer *fb;
1750 struct drm_connector *connector;
1751 struct drm_crtc *crtc;
1752 struct drm_encoder *encoder;
1754 int connector_count = 0;
1757 int encoder_count = 0;
1759 uint32_t __user *fb_id;
1760 uint32_t __user *crtc_id;
1761 uint32_t __user *connector_id;
1762 uint32_t __user *encoder_id;
1763 struct drm_mode_group *mode_group;
1765 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1769 mutex_lock(&file_priv->fbs_lock);
1771 * For the non-control nodes we need to limit the list of resources
1772 * by IDs in the group list for this node
1774 list_for_each(lh, &file_priv->fbs)
1777 /* handle this in 4 parts */
1779 if (card_res->count_fbs >= fb_count) {
1781 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1782 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1783 if (put_user(fb->base.id, fb_id + copied)) {
1784 mutex_unlock(&file_priv->fbs_lock);
1790 card_res->count_fbs = fb_count;
1791 mutex_unlock(&file_priv->fbs_lock);
1793 /* mode_config.mutex protects the connector list against e.g. DP MST
1794 * connector hot-adding. CRTC/Plane lists are invariant. */
1795 mutex_lock(&dev->mode_config.mutex);
1796 if (!drm_is_primary_client(file_priv)) {
1799 list_for_each(lh, &dev->mode_config.crtc_list)
1802 list_for_each(lh, &dev->mode_config.connector_list)
1805 list_for_each(lh, &dev->mode_config.encoder_list)
1809 mode_group = &file_priv->master->minor->mode_group;
1810 crtc_count = mode_group->num_crtcs;
1811 connector_count = mode_group->num_connectors;
1812 encoder_count = mode_group->num_encoders;
1815 card_res->max_height = dev->mode_config.max_height;
1816 card_res->min_height = dev->mode_config.min_height;
1817 card_res->max_width = dev->mode_config.max_width;
1818 card_res->min_width = dev->mode_config.min_width;
1821 if (card_res->count_crtcs >= crtc_count) {
1823 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1825 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1827 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1828 if (put_user(crtc->base.id, crtc_id + copied)) {
1835 for (i = 0; i < mode_group->num_crtcs; i++) {
1836 if (put_user(mode_group->id_list[i],
1837 crtc_id + copied)) {
1845 card_res->count_crtcs = crtc_count;
1848 if (card_res->count_encoders >= encoder_count) {
1850 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1852 list_for_each_entry(encoder,
1853 &dev->mode_config.encoder_list,
1855 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1857 if (put_user(encoder->base.id, encoder_id +
1865 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1866 if (put_user(mode_group->id_list[i],
1867 encoder_id + copied)) {
1876 card_res->count_encoders = encoder_count;
1879 if (card_res->count_connectors >= connector_count) {
1881 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1883 list_for_each_entry(connector,
1884 &dev->mode_config.connector_list,
1886 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1889 if (put_user(connector->base.id,
1890 connector_id + copied)) {
1897 int start = mode_group->num_crtcs +
1898 mode_group->num_encoders;
1899 for (i = start; i < start + mode_group->num_connectors; i++) {
1900 if (put_user(mode_group->id_list[i],
1901 connector_id + copied)) {
1909 card_res->count_connectors = connector_count;
1911 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1912 card_res->count_connectors, card_res->count_encoders);
1915 mutex_unlock(&dev->mode_config.mutex);
1920 * drm_mode_getcrtc - get CRTC configuration
1921 * @dev: drm device for the ioctl
1922 * @data: data pointer for the ioctl
1923 * @file_priv: drm file for the ioctl call
1925 * Construct a CRTC configuration structure to return to the user.
1927 * Called by the user via ioctl.
1930 * Zero on success, negative errno on failure.
1932 int drm_mode_getcrtc(struct drm_device *dev,
1933 void *data, struct drm_file *file_priv)
1935 struct drm_mode_crtc *crtc_resp = data;
1936 struct drm_crtc *crtc;
1938 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1941 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1945 drm_modeset_lock_crtc(crtc, crtc->primary);
1946 crtc_resp->x = crtc->x;
1947 crtc_resp->y = crtc->y;
1948 crtc_resp->gamma_size = crtc->gamma_size;
1949 if (crtc->primary->fb)
1950 crtc_resp->fb_id = crtc->primary->fb->base.id;
1952 crtc_resp->fb_id = 0;
1954 if (crtc->enabled) {
1956 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1957 crtc_resp->mode_valid = 1;
1960 crtc_resp->mode_valid = 0;
1962 drm_modeset_unlock_crtc(crtc);
1967 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1968 const struct drm_file *file_priv)
1971 * If user-space hasn't configured the driver to expose the stereo 3D
1972 * modes, don't expose them.
1974 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1980 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
1982 /* For atomic drivers only state objects are synchronously updated and
1983 * protected by modeset locks, so check those first. */
1984 if (connector->state)
1985 return connector->state->best_encoder;
1986 return connector->encoder;
1990 * drm_mode_getconnector - get connector configuration
1991 * @dev: drm device for the ioctl
1992 * @data: data pointer for the ioctl
1993 * @file_priv: drm file for the ioctl call
1995 * Construct a connector configuration structure to return to the user.
1997 * Called by the user via ioctl.
2000 * Zero on success, negative errno on failure.
2002 int drm_mode_getconnector(struct drm_device *dev, void *data,
2003 struct drm_file *file_priv)
2005 struct drm_mode_get_connector *out_resp = data;
2006 struct drm_connector *connector;
2007 struct drm_encoder *encoder;
2008 struct drm_display_mode *mode;
2010 int props_count = 0;
2011 int encoders_count = 0;
2015 struct drm_mode_modeinfo u_mode;
2016 struct drm_mode_modeinfo __user *mode_ptr;
2017 uint32_t __user *prop_ptr;
2018 uint64_t __user *prop_values;
2019 uint32_t __user *encoder_ptr;
2021 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2024 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2026 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2028 mutex_lock(&dev->mode_config.mutex);
2030 connector = drm_connector_find(dev, out_resp->connector_id);
2036 props_count = connector->properties.count;
2038 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2039 if (connector->encoder_ids[i] != 0) {
2044 if (out_resp->count_modes == 0) {
2045 connector->funcs->fill_modes(connector,
2046 dev->mode_config.max_width,
2047 dev->mode_config.max_height);
2050 /* delayed so we get modes regardless of pre-fill_modes state */
2051 list_for_each_entry(mode, &connector->modes, head)
2052 if (drm_mode_expose_to_userspace(mode, file_priv))
2055 out_resp->connector_id = connector->base.id;
2056 out_resp->connector_type = connector->connector_type;
2057 out_resp->connector_type_id = connector->connector_type_id;
2058 out_resp->mm_width = connector->display_info.width_mm;
2059 out_resp->mm_height = connector->display_info.height_mm;
2060 out_resp->subpixel = connector->display_info.subpixel_order;
2061 out_resp->connection = connector->status;
2062 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2064 encoder = drm_connector_get_encoder(connector);
2066 out_resp->encoder_id = encoder->base.id;
2068 out_resp->encoder_id = 0;
2069 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2072 * This ioctl is called twice, once to determine how much space is
2073 * needed, and the 2nd time to fill it.
2075 if ((out_resp->count_modes >= mode_count) && mode_count) {
2077 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2078 list_for_each_entry(mode, &connector->modes, head) {
2079 if (!drm_mode_expose_to_userspace(mode, file_priv))
2082 drm_crtc_convert_to_umode(&u_mode, mode);
2083 if (copy_to_user(mode_ptr + copied,
2084 &u_mode, sizeof(u_mode))) {
2091 out_resp->count_modes = mode_count;
2093 if ((out_resp->count_props >= props_count) && props_count) {
2095 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
2096 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
2097 for (i = 0; i < connector->properties.count; i++) {
2098 if (put_user(connector->properties.ids[i],
2099 prop_ptr + copied)) {
2104 if (put_user(connector->properties.values[i],
2105 prop_values + copied)) {
2112 out_resp->count_props = props_count;
2114 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2116 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2117 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2118 if (connector->encoder_ids[i] != 0) {
2119 if (put_user(connector->encoder_ids[i],
2120 encoder_ptr + copied)) {
2128 out_resp->count_encoders = encoders_count;
2131 mutex_unlock(&dev->mode_config.mutex);
2136 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2138 struct drm_connector *connector;
2139 struct drm_device *dev = encoder->dev;
2140 bool uses_atomic = false;
2142 /* For atomic drivers only state objects are synchronously updated and
2143 * protected by modeset locks, so check those first. */
2144 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2145 if (!connector->state)
2150 if (connector->state->best_encoder != encoder)
2153 return connector->state->crtc;
2156 /* Don't return stale data (e.g. pending async disable). */
2160 return encoder->crtc;
2164 * drm_mode_getencoder - get encoder configuration
2165 * @dev: drm device for the ioctl
2166 * @data: data pointer for the ioctl
2167 * @file_priv: drm file for the ioctl call
2169 * Construct a encoder configuration structure to return to the user.
2171 * Called by the user via ioctl.
2174 * Zero on success, negative errno on failure.
2176 int drm_mode_getencoder(struct drm_device *dev, void *data,
2177 struct drm_file *file_priv)
2179 struct drm_mode_get_encoder *enc_resp = data;
2180 struct drm_encoder *encoder;
2181 struct drm_crtc *crtc;
2183 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2186 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2190 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2191 crtc = drm_encoder_get_crtc(encoder);
2193 enc_resp->crtc_id = crtc->base.id;
2194 else if (encoder->crtc)
2195 enc_resp->crtc_id = encoder->crtc->base.id;
2197 enc_resp->crtc_id = 0;
2198 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2200 enc_resp->encoder_type = encoder->encoder_type;
2201 enc_resp->encoder_id = encoder->base.id;
2202 enc_resp->possible_crtcs = encoder->possible_crtcs;
2203 enc_resp->possible_clones = encoder->possible_clones;
2209 * drm_mode_getplane_res - enumerate all plane resources
2212 * @file_priv: DRM file info
2214 * Construct a list of plane ids to return to the user.
2216 * Called by the user via ioctl.
2219 * Zero on success, negative errno on failure.
2221 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2222 struct drm_file *file_priv)
2224 struct drm_mode_get_plane_res *plane_resp = data;
2225 struct drm_mode_config *config;
2226 struct drm_plane *plane;
2227 uint32_t __user *plane_ptr;
2229 unsigned num_planes;
2231 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2234 config = &dev->mode_config;
2236 if (file_priv->universal_planes)
2237 num_planes = config->num_total_plane;
2239 num_planes = config->num_overlay_plane;
2242 * This ioctl is called twice, once to determine how much space is
2243 * needed, and the 2nd time to fill it.
2246 (plane_resp->count_planes >= num_planes)) {
2247 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2249 /* Plane lists are invariant, no locking needed. */
2250 list_for_each_entry(plane, &config->plane_list, head) {
2252 * Unless userspace set the 'universal planes'
2253 * capability bit, only advertise overlays.
2255 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2256 !file_priv->universal_planes)
2259 if (put_user(plane->base.id, plane_ptr + copied))
2264 plane_resp->count_planes = num_planes;
2270 * drm_mode_getplane - get plane configuration
2273 * @file_priv: DRM file info
2275 * Construct a plane configuration structure to return to the user.
2277 * Called by the user via ioctl.
2280 * Zero on success, negative errno on failure.
2282 int drm_mode_getplane(struct drm_device *dev, void *data,
2283 struct drm_file *file_priv)
2285 struct drm_mode_get_plane *plane_resp = data;
2286 struct drm_plane *plane;
2287 uint32_t __user *format_ptr;
2289 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2292 plane = drm_plane_find(dev, plane_resp->plane_id);
2296 drm_modeset_lock(&plane->mutex, NULL);
2298 plane_resp->crtc_id = plane->crtc->base.id;
2300 plane_resp->crtc_id = 0;
2303 plane_resp->fb_id = plane->fb->base.id;
2305 plane_resp->fb_id = 0;
2306 drm_modeset_unlock(&plane->mutex);
2308 plane_resp->plane_id = plane->base.id;
2309 plane_resp->possible_crtcs = plane->possible_crtcs;
2310 plane_resp->gamma_size = 0;
2313 * This ioctl is called twice, once to determine how much space is
2314 * needed, and the 2nd time to fill it.
2316 if (plane->format_count &&
2317 (plane_resp->count_format_types >= plane->format_count)) {
2318 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2319 if (copy_to_user(format_ptr,
2320 plane->format_types,
2321 sizeof(uint32_t) * plane->format_count)) {
2325 plane_resp->count_format_types = plane->format_count;
2331 * setplane_internal - setplane handler for internal callers
2333 * Note that we assume an extra reference has already been taken on fb. If the
2334 * update fails, this reference will be dropped before return; if it succeeds,
2335 * the previous framebuffer (if any) will be unreferenced instead.
2337 * src_{x,y,w,h} are provided in 16.16 fixed point format
2339 static int __setplane_internal(struct drm_plane *plane,
2340 struct drm_crtc *crtc,
2341 struct drm_framebuffer *fb,
2342 int32_t crtc_x, int32_t crtc_y,
2343 uint32_t crtc_w, uint32_t crtc_h,
2344 /* src_{x,y,w,h} values are 16.16 fixed point */
2345 uint32_t src_x, uint32_t src_y,
2346 uint32_t src_w, uint32_t src_h)
2349 unsigned int fb_width, fb_height;
2352 /* No fb means shut it down */
2354 plane->old_fb = plane->fb;
2355 ret = plane->funcs->disable_plane(plane);
2360 plane->old_fb = NULL;
2365 /* Check whether this plane is usable on this CRTC */
2366 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2367 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2372 /* Check whether this plane supports the fb pixel format. */
2373 for (i = 0; i < plane->format_count; i++)
2374 if (fb->pixel_format == plane->format_types[i])
2376 if (i == plane->format_count) {
2377 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2378 drm_get_format_name(fb->pixel_format));
2383 fb_width = fb->width << 16;
2384 fb_height = fb->height << 16;
2386 /* Make sure source coordinates are inside the fb. */
2387 if (src_w > fb_width ||
2388 src_x > fb_width - src_w ||
2389 src_h > fb_height ||
2390 src_y > fb_height - src_h) {
2391 DRM_DEBUG_KMS("Invalid source coordinates "
2392 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2393 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2394 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2395 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2396 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2401 plane->old_fb = plane->fb;
2402 ret = plane->funcs->update_plane(plane, crtc, fb,
2403 crtc_x, crtc_y, crtc_w, crtc_h,
2404 src_x, src_y, src_w, src_h);
2410 plane->old_fb = NULL;
2415 drm_framebuffer_unreference(fb);
2417 drm_framebuffer_unreference(plane->old_fb);
2418 plane->old_fb = NULL;
2423 static int setplane_internal(struct drm_plane *plane,
2424 struct drm_crtc *crtc,
2425 struct drm_framebuffer *fb,
2426 int32_t crtc_x, int32_t crtc_y,
2427 uint32_t crtc_w, uint32_t crtc_h,
2428 /* src_{x,y,w,h} values are 16.16 fixed point */
2429 uint32_t src_x, uint32_t src_y,
2430 uint32_t src_w, uint32_t src_h)
2434 drm_modeset_lock_all(plane->dev);
2435 ret = __setplane_internal(plane, crtc, fb,
2436 crtc_x, crtc_y, crtc_w, crtc_h,
2437 src_x, src_y, src_w, src_h);
2438 drm_modeset_unlock_all(plane->dev);
2444 * drm_mode_setplane - configure a plane's configuration
2446 * @data: ioctl data*
2447 * @file_priv: DRM file info
2449 * Set plane configuration, including placement, fb, scaling, and other factors.
2450 * Or pass a NULL fb to disable (planes may be disabled without providing a
2454 * Zero on success, negative errno on failure.
2456 int drm_mode_setplane(struct drm_device *dev, void *data,
2457 struct drm_file *file_priv)
2459 struct drm_mode_set_plane *plane_req = data;
2460 struct drm_plane *plane;
2461 struct drm_crtc *crtc = NULL;
2462 struct drm_framebuffer *fb = NULL;
2464 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2467 /* Give drivers some help against integer overflows */
2468 if (plane_req->crtc_w > INT_MAX ||
2469 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2470 plane_req->crtc_h > INT_MAX ||
2471 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2472 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2473 plane_req->crtc_w, plane_req->crtc_h,
2474 plane_req->crtc_x, plane_req->crtc_y);
2479 * First, find the plane, crtc, and fb objects. If not available,
2480 * we don't bother to call the driver.
2482 plane = drm_plane_find(dev, plane_req->plane_id);
2484 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2485 plane_req->plane_id);
2489 if (plane_req->fb_id) {
2490 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2492 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2497 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2499 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2500 plane_req->crtc_id);
2506 * setplane_internal will take care of deref'ing either the old or new
2507 * framebuffer depending on success.
2509 return setplane_internal(plane, crtc, fb,
2510 plane_req->crtc_x, plane_req->crtc_y,
2511 plane_req->crtc_w, plane_req->crtc_h,
2512 plane_req->src_x, plane_req->src_y,
2513 plane_req->src_w, plane_req->src_h);
2517 * drm_mode_set_config_internal - helper to call ->set_config
2518 * @set: modeset config to set
2520 * This is a little helper to wrap internal calls to the ->set_config driver
2521 * interface. The only thing it adds is correct refcounting dance.
2524 * Zero on success, negative errno on failure.
2526 int drm_mode_set_config_internal(struct drm_mode_set *set)
2528 struct drm_crtc *crtc = set->crtc;
2529 struct drm_framebuffer *fb;
2530 struct drm_crtc *tmp;
2534 * NOTE: ->set_config can also disable other crtcs (if we steal all
2535 * connectors from it), hence we need to refcount the fbs across all
2536 * crtcs. Atomic modeset will have saner semantics ...
2538 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2539 tmp->primary->old_fb = tmp->primary->fb;
2543 ret = crtc->funcs->set_config(set);
2545 crtc->primary->crtc = crtc;
2546 crtc->primary->fb = fb;
2549 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2550 if (tmp->primary->fb)
2551 drm_framebuffer_reference(tmp->primary->fb);
2552 if (tmp->primary->old_fb)
2553 drm_framebuffer_unreference(tmp->primary->old_fb);
2554 tmp->primary->old_fb = NULL;
2559 EXPORT_SYMBOL(drm_mode_set_config_internal);
2562 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2564 * @crtc: CRTC that framebuffer will be displayed on
2567 * @mode: mode that framebuffer will be displayed under
2568 * @fb: framebuffer to check size of
2570 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2572 const struct drm_display_mode *mode,
2573 const struct drm_framebuffer *fb)
2576 int hdisplay, vdisplay;
2578 hdisplay = mode->hdisplay;
2579 vdisplay = mode->vdisplay;
2581 if (drm_mode_is_stereo(mode)) {
2582 struct drm_display_mode adjusted = *mode;
2584 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2585 hdisplay = adjusted.crtc_hdisplay;
2586 vdisplay = adjusted.crtc_vdisplay;
2589 if (crtc->invert_dimensions)
2590 swap(hdisplay, vdisplay);
2592 if (hdisplay > fb->width ||
2593 vdisplay > fb->height ||
2594 x > fb->width - hdisplay ||
2595 y > fb->height - vdisplay) {
2596 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2597 fb->width, fb->height, hdisplay, vdisplay, x, y,
2598 crtc->invert_dimensions ? " (inverted)" : "");
2604 EXPORT_SYMBOL(drm_crtc_check_viewport);
2607 * drm_mode_setcrtc - set CRTC configuration
2608 * @dev: drm device for the ioctl
2609 * @data: data pointer for the ioctl
2610 * @file_priv: drm file for the ioctl call
2612 * Build a new CRTC configuration based on user request.
2614 * Called by the user via ioctl.
2617 * Zero on success, negative errno on failure.
2619 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2620 struct drm_file *file_priv)
2622 struct drm_mode_config *config = &dev->mode_config;
2623 struct drm_mode_crtc *crtc_req = data;
2624 struct drm_crtc *crtc;
2625 struct drm_connector **connector_set = NULL, *connector;
2626 struct drm_framebuffer *fb = NULL;
2627 struct drm_display_mode *mode = NULL;
2628 struct drm_mode_set set;
2629 uint32_t __user *set_connectors_ptr;
2633 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2636 /* For some reason crtc x/y offsets are signed internally. */
2637 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2640 drm_modeset_lock_all(dev);
2641 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2643 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2647 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2649 if (crtc_req->mode_valid) {
2650 /* If we have a mode we need a framebuffer. */
2651 /* If we pass -1, set the mode with the currently bound fb */
2652 if (crtc_req->fb_id == -1) {
2653 if (!crtc->primary->fb) {
2654 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2658 fb = crtc->primary->fb;
2659 /* Make refcounting symmetric with the lookup path. */
2660 drm_framebuffer_reference(fb);
2662 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2664 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2671 mode = drm_mode_create(dev);
2677 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2679 DRM_DEBUG_KMS("Invalid mode\n");
2683 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2685 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2692 if (crtc_req->count_connectors == 0 && mode) {
2693 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2698 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2699 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2700 crtc_req->count_connectors);
2705 if (crtc_req->count_connectors > 0) {
2708 /* Avoid unbounded kernel memory allocation */
2709 if (crtc_req->count_connectors > config->num_connector) {
2714 connector_set = kmalloc(crtc_req->count_connectors *
2715 sizeof(struct drm_connector *),
2717 if (!connector_set) {
2722 for (i = 0; i < crtc_req->count_connectors; i++) {
2723 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2724 if (get_user(out_id, &set_connectors_ptr[i])) {
2729 connector = drm_connector_find(dev, out_id);
2731 DRM_DEBUG_KMS("Connector id %d unknown\n",
2736 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2740 connector_set[i] = connector;
2745 set.x = crtc_req->x;
2746 set.y = crtc_req->y;
2748 set.connectors = connector_set;
2749 set.num_connectors = crtc_req->count_connectors;
2751 ret = drm_mode_set_config_internal(&set);
2755 drm_framebuffer_unreference(fb);
2757 kfree(connector_set);
2758 drm_mode_destroy(dev, mode);
2759 drm_modeset_unlock_all(dev);
2764 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2765 * universal plane handler call
2766 * @crtc: crtc to update cursor for
2767 * @req: data pointer for the ioctl
2768 * @file_priv: drm file for the ioctl call
2770 * Legacy cursor ioctl's work directly with driver buffer handles. To
2771 * translate legacy ioctl calls into universal plane handler calls, we need to
2772 * wrap the native buffer handle in a drm_framebuffer.
2774 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2775 * buffer with a pitch of 4*width; the universal plane interface should be used
2776 * directly in cases where the hardware can support other buffer settings and
2777 * userspace wants to make use of these capabilities.
2780 * Zero on success, negative errno on failure.
2782 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2783 struct drm_mode_cursor2 *req,
2784 struct drm_file *file_priv)
2786 struct drm_device *dev = crtc->dev;
2787 struct drm_framebuffer *fb = NULL;
2788 struct drm_mode_fb_cmd2 fbreq = {
2789 .width = req->width,
2790 .height = req->height,
2791 .pixel_format = DRM_FORMAT_ARGB8888,
2792 .pitches = { req->width * 4 },
2793 .handles = { req->handle },
2795 int32_t crtc_x, crtc_y;
2796 uint32_t crtc_w = 0, crtc_h = 0;
2797 uint32_t src_w = 0, src_h = 0;
2800 BUG_ON(!crtc->cursor);
2801 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2804 * Obtain fb we'll be using (either new or existing) and take an extra
2805 * reference to it if fb != null. setplane will take care of dropping
2806 * the reference if the plane update fails.
2808 if (req->flags & DRM_MODE_CURSOR_BO) {
2810 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2812 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2816 drm_framebuffer_reference(fb);
2821 fb = crtc->cursor->fb;
2823 drm_framebuffer_reference(fb);
2826 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2830 crtc_x = crtc->cursor_x;
2831 crtc_y = crtc->cursor_y;
2836 crtc_h = fb->height;
2837 src_w = fb->width << 16;
2838 src_h = fb->height << 16;
2842 * setplane_internal will take care of deref'ing either the old or new
2843 * framebuffer depending on success.
2845 ret = __setplane_internal(crtc->cursor, crtc, fb,
2846 crtc_x, crtc_y, crtc_w, crtc_h,
2847 0, 0, src_w, src_h);
2849 /* Update successful; save new cursor position, if necessary */
2850 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2851 crtc->cursor_x = req->x;
2852 crtc->cursor_y = req->y;
2858 static int drm_mode_cursor_common(struct drm_device *dev,
2859 struct drm_mode_cursor2 *req,
2860 struct drm_file *file_priv)
2862 struct drm_crtc *crtc;
2865 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2868 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2871 crtc = drm_crtc_find(dev, req->crtc_id);
2873 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2878 * If this crtc has a universal cursor plane, call that plane's update
2879 * handler rather than using legacy cursor handlers.
2881 drm_modeset_lock_crtc(crtc, crtc->cursor);
2883 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2887 if (req->flags & DRM_MODE_CURSOR_BO) {
2888 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2892 /* Turns off the cursor if handle is 0 */
2893 if (crtc->funcs->cursor_set2)
2894 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2895 req->width, req->height, req->hot_x, req->hot_y);
2897 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2898 req->width, req->height);
2901 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2902 if (crtc->funcs->cursor_move) {
2903 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2910 drm_modeset_unlock_crtc(crtc);
2918 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2919 * @dev: drm device for the ioctl
2920 * @data: data pointer for the ioctl
2921 * @file_priv: drm file for the ioctl call
2923 * Set the cursor configuration based on user request.
2925 * Called by the user via ioctl.
2928 * Zero on success, negative errno on failure.
2930 int drm_mode_cursor_ioctl(struct drm_device *dev,
2931 void *data, struct drm_file *file_priv)
2933 struct drm_mode_cursor *req = data;
2934 struct drm_mode_cursor2 new_req;
2936 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2937 new_req.hot_x = new_req.hot_y = 0;
2939 return drm_mode_cursor_common(dev, &new_req, file_priv);
2943 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2944 * @dev: drm device for the ioctl
2945 * @data: data pointer for the ioctl
2946 * @file_priv: drm file for the ioctl call
2948 * Set the cursor configuration based on user request. This implements the 2nd
2949 * version of the cursor ioctl, which allows userspace to additionally specify
2950 * the hotspot of the pointer.
2952 * Called by the user via ioctl.
2955 * Zero on success, negative errno on failure.
2957 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2958 void *data, struct drm_file *file_priv)
2960 struct drm_mode_cursor2 *req = data;
2961 return drm_mode_cursor_common(dev, req, file_priv);
2965 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2966 * @bpp: bits per pixels
2967 * @depth: bit depth per pixel
2969 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2970 * Useful in fbdev emulation code, since that deals in those values.
2972 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2978 fmt = DRM_FORMAT_C8;
2982 fmt = DRM_FORMAT_XRGB1555;
2984 fmt = DRM_FORMAT_RGB565;
2987 fmt = DRM_FORMAT_RGB888;
2991 fmt = DRM_FORMAT_XRGB8888;
2992 else if (depth == 30)
2993 fmt = DRM_FORMAT_XRGB2101010;
2995 fmt = DRM_FORMAT_ARGB8888;
2998 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2999 fmt = DRM_FORMAT_XRGB8888;
3005 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3008 * drm_mode_addfb - add an FB to the graphics configuration
3009 * @dev: drm device for the ioctl
3010 * @data: data pointer for the ioctl
3011 * @file_priv: drm file for the ioctl call
3013 * Add a new FB to the specified CRTC, given a user request. This is the
3014 * original addfb ioctl which only supported RGB formats.
3016 * Called by the user via ioctl.
3019 * Zero on success, negative errno on failure.
3021 int drm_mode_addfb(struct drm_device *dev,
3022 void *data, struct drm_file *file_priv)
3024 struct drm_mode_fb_cmd *or = data;
3025 struct drm_mode_fb_cmd2 r = {};
3028 /* convert to new format and call new ioctl */
3029 r.fb_id = or->fb_id;
3030 r.width = or->width;
3031 r.height = or->height;
3032 r.pitches[0] = or->pitch;
3033 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3034 r.handles[0] = or->handle;
3036 ret = drm_mode_addfb2(dev, &r, file_priv);
3040 or->fb_id = r.fb_id;
3045 static int format_check(const struct drm_mode_fb_cmd2 *r)
3047 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3051 case DRM_FORMAT_RGB332:
3052 case DRM_FORMAT_BGR233:
3053 case DRM_FORMAT_XRGB4444:
3054 case DRM_FORMAT_XBGR4444:
3055 case DRM_FORMAT_RGBX4444:
3056 case DRM_FORMAT_BGRX4444:
3057 case DRM_FORMAT_ARGB4444:
3058 case DRM_FORMAT_ABGR4444:
3059 case DRM_FORMAT_RGBA4444:
3060 case DRM_FORMAT_BGRA4444:
3061 case DRM_FORMAT_XRGB1555:
3062 case DRM_FORMAT_XBGR1555:
3063 case DRM_FORMAT_RGBX5551:
3064 case DRM_FORMAT_BGRX5551:
3065 case DRM_FORMAT_ARGB1555:
3066 case DRM_FORMAT_ABGR1555:
3067 case DRM_FORMAT_RGBA5551:
3068 case DRM_FORMAT_BGRA5551:
3069 case DRM_FORMAT_RGB565:
3070 case DRM_FORMAT_BGR565:
3071 case DRM_FORMAT_RGB888:
3072 case DRM_FORMAT_BGR888:
3073 case DRM_FORMAT_XRGB8888:
3074 case DRM_FORMAT_XBGR8888:
3075 case DRM_FORMAT_RGBX8888:
3076 case DRM_FORMAT_BGRX8888:
3077 case DRM_FORMAT_ARGB8888:
3078 case DRM_FORMAT_ABGR8888:
3079 case DRM_FORMAT_RGBA8888:
3080 case DRM_FORMAT_BGRA8888:
3081 case DRM_FORMAT_XRGB2101010:
3082 case DRM_FORMAT_XBGR2101010:
3083 case DRM_FORMAT_RGBX1010102:
3084 case DRM_FORMAT_BGRX1010102:
3085 case DRM_FORMAT_ARGB2101010:
3086 case DRM_FORMAT_ABGR2101010:
3087 case DRM_FORMAT_RGBA1010102:
3088 case DRM_FORMAT_BGRA1010102:
3089 case DRM_FORMAT_YUYV:
3090 case DRM_FORMAT_YVYU:
3091 case DRM_FORMAT_UYVY:
3092 case DRM_FORMAT_VYUY:
3093 case DRM_FORMAT_AYUV:
3094 case DRM_FORMAT_NV12:
3095 case DRM_FORMAT_NV21:
3096 case DRM_FORMAT_NV16:
3097 case DRM_FORMAT_NV61:
3098 case DRM_FORMAT_NV24:
3099 case DRM_FORMAT_NV42:
3100 case DRM_FORMAT_YUV410:
3101 case DRM_FORMAT_YVU410:
3102 case DRM_FORMAT_YUV411:
3103 case DRM_FORMAT_YVU411:
3104 case DRM_FORMAT_YUV420:
3105 case DRM_FORMAT_YVU420:
3106 case DRM_FORMAT_YUV422:
3107 case DRM_FORMAT_YVU422:
3108 case DRM_FORMAT_YUV444:
3109 case DRM_FORMAT_YVU444:
3112 DRM_DEBUG_KMS("invalid pixel format %s\n",
3113 drm_get_format_name(r->pixel_format));
3118 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3120 int ret, hsub, vsub, num_planes, i;
3122 ret = format_check(r);
3124 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3125 drm_get_format_name(r->pixel_format));
3129 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3130 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3131 num_planes = drm_format_num_planes(r->pixel_format);
3133 if (r->width == 0 || r->width % hsub) {
3134 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3138 if (r->height == 0 || r->height % vsub) {
3139 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3143 for (i = 0; i < num_planes; i++) {
3144 unsigned int width = r->width / (i != 0 ? hsub : 1);
3145 unsigned int height = r->height / (i != 0 ? vsub : 1);
3146 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3148 if (!r->handles[i]) {
3149 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3153 if ((uint64_t) width * cpp > UINT_MAX)
3156 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3159 if (r->pitches[i] < width * cpp) {
3160 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3168 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3169 struct drm_mode_fb_cmd2 *r,
3170 struct drm_file *file_priv)
3172 struct drm_mode_config *config = &dev->mode_config;
3173 struct drm_framebuffer *fb;
3176 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3177 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3178 return ERR_PTR(-EINVAL);
3181 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3182 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3183 r->width, config->min_width, config->max_width);
3184 return ERR_PTR(-EINVAL);
3186 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3187 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3188 r->height, config->min_height, config->max_height);
3189 return ERR_PTR(-EINVAL);
3192 ret = framebuffer_check(r);
3194 return ERR_PTR(ret);
3196 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3198 DRM_DEBUG_KMS("could not create framebuffer\n");
3202 mutex_lock(&file_priv->fbs_lock);
3203 r->fb_id = fb->base.id;
3204 list_add(&fb->filp_head, &file_priv->fbs);
3205 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3206 mutex_unlock(&file_priv->fbs_lock);
3212 * drm_mode_addfb2 - add an FB to the graphics configuration
3213 * @dev: drm device for the ioctl
3214 * @data: data pointer for the ioctl
3215 * @file_priv: drm file for the ioctl call
3217 * Add a new FB to the specified CRTC, given a user request with format. This is
3218 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3219 * and uses fourcc codes as pixel format specifiers.
3221 * Called by the user via ioctl.
3224 * Zero on success, negative errno on failure.
3226 int drm_mode_addfb2(struct drm_device *dev,
3227 void *data, struct drm_file *file_priv)
3229 struct drm_framebuffer *fb;
3231 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3234 fb = add_framebuffer_internal(dev, data, file_priv);
3242 * drm_mode_rmfb - remove an FB from the configuration
3243 * @dev: drm device for the ioctl
3244 * @data: data pointer for the ioctl
3245 * @file_priv: drm file for the ioctl call
3247 * Remove the FB specified by the user.
3249 * Called by the user via ioctl.
3252 * Zero on success, negative errno on failure.
3254 int drm_mode_rmfb(struct drm_device *dev,
3255 void *data, struct drm_file *file_priv)
3257 struct drm_framebuffer *fb = NULL;
3258 struct drm_framebuffer *fbl = NULL;
3259 uint32_t *id = data;
3262 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3265 mutex_lock(&file_priv->fbs_lock);
3266 mutex_lock(&dev->mode_config.fb_lock);
3267 fb = __drm_framebuffer_lookup(dev, *id);
3271 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3277 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3278 __drm_framebuffer_unregister(dev, fb);
3280 list_del_init(&fb->filp_head);
3281 mutex_unlock(&dev->mode_config.fb_lock);
3282 mutex_unlock(&file_priv->fbs_lock);
3284 drm_framebuffer_remove(fb);
3289 mutex_unlock(&dev->mode_config.fb_lock);
3290 mutex_unlock(&file_priv->fbs_lock);
3296 * drm_mode_getfb - get FB info
3297 * @dev: drm device for the ioctl
3298 * @data: data pointer for the ioctl
3299 * @file_priv: drm file for the ioctl call
3301 * Lookup the FB given its ID and return info about it.
3303 * Called by the user via ioctl.
3306 * Zero on success, negative errno on failure.
3308 int drm_mode_getfb(struct drm_device *dev,
3309 void *data, struct drm_file *file_priv)
3311 struct drm_mode_fb_cmd *r = data;
3312 struct drm_framebuffer *fb;
3315 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3318 fb = drm_framebuffer_lookup(dev, r->fb_id);
3322 r->height = fb->height;
3323 r->width = fb->width;
3324 r->depth = fb->depth;
3325 r->bpp = fb->bits_per_pixel;
3326 r->pitch = fb->pitches[0];
3327 if (fb->funcs->create_handle) {
3328 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3329 drm_is_control_client(file_priv)) {
3330 ret = fb->funcs->create_handle(fb, file_priv,
3333 /* GET_FB() is an unprivileged ioctl so we must not
3334 * return a buffer-handle to non-master processes! For
3335 * backwards-compatibility reasons, we cannot make
3336 * GET_FB() privileged, so just return an invalid handle
3337 * for non-masters. */
3345 drm_framebuffer_unreference(fb);
3351 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3352 * @dev: drm device for the ioctl
3353 * @data: data pointer for the ioctl
3354 * @file_priv: drm file for the ioctl call
3356 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3357 * rectangle list. Generic userspace which does frontbuffer rendering must call
3358 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3359 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3361 * Modesetting drivers which always update the frontbuffer do not need to
3362 * implement the corresponding ->dirty framebuffer callback.
3364 * Called by the user via ioctl.
3367 * Zero on success, negative errno on failure.
3369 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3370 void *data, struct drm_file *file_priv)
3372 struct drm_clip_rect __user *clips_ptr;
3373 struct drm_clip_rect *clips = NULL;
3374 struct drm_mode_fb_dirty_cmd *r = data;
3375 struct drm_framebuffer *fb;
3380 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3383 fb = drm_framebuffer_lookup(dev, r->fb_id);
3387 num_clips = r->num_clips;
3388 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3390 if (!num_clips != !clips_ptr) {
3395 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3397 /* If userspace annotates copy, clips must come in pairs */
3398 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3403 if (num_clips && clips_ptr) {
3404 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3408 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3414 ret = copy_from_user(clips, clips_ptr,
3415 num_clips * sizeof(*clips));
3422 if (fb->funcs->dirty) {
3423 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3432 drm_framebuffer_unreference(fb);
3439 * drm_fb_release - remove and free the FBs on this file
3440 * @priv: drm file for the ioctl
3442 * Destroy all the FBs associated with @filp.
3444 * Called by the user via ioctl.
3447 * Zero on success, negative errno on failure.
3449 void drm_fb_release(struct drm_file *priv)
3451 struct drm_device *dev = priv->minor->dev;
3452 struct drm_framebuffer *fb, *tfb;
3455 * When the file gets released that means no one else can access the fb
3456 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3457 * avoid upsetting lockdep since the universal cursor code adds a
3458 * framebuffer while holding mutex locks.
3460 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3461 * locks is impossible here since no one else but this function can get
3464 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3466 mutex_lock(&dev->mode_config.fb_lock);
3467 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3468 __drm_framebuffer_unregister(dev, fb);
3469 mutex_unlock(&dev->mode_config.fb_lock);
3471 list_del_init(&fb->filp_head);
3473 /* This will also drop the fpriv->fbs reference. */
3474 drm_framebuffer_remove(fb);
3479 * drm_property_create - create a new property type
3481 * @flags: flags specifying the property type
3482 * @name: name of the property
3483 * @num_values: number of pre-defined values
3485 * This creates a new generic drm property which can then be attached to a drm
3486 * object with drm_object_attach_property. The returned property object must be
3487 * freed with drm_property_destroy.
3489 * Note that the DRM core keeps a per-device list of properties and that, if
3490 * drm_mode_config_cleanup() is called, it will destroy all properties created
3494 * A pointer to the newly created property on success, NULL on failure.
3496 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3497 const char *name, int num_values)
3499 struct drm_property *property = NULL;
3502 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3506 property->dev = dev;
3509 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3510 if (!property->values)
3514 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3518 property->flags = flags;
3519 property->num_values = num_values;
3520 INIT_LIST_HEAD(&property->enum_list);
3523 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3524 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3527 list_add_tail(&property->head, &dev->mode_config.property_list);
3529 WARN_ON(!drm_property_type_valid(property));
3533 kfree(property->values);
3537 EXPORT_SYMBOL(drm_property_create);
3540 * drm_property_create_enum - create a new enumeration property type
3542 * @flags: flags specifying the property type
3543 * @name: name of the property
3544 * @props: enumeration lists with property values
3545 * @num_values: number of pre-defined values
3547 * This creates a new generic drm property which can then be attached to a drm
3548 * object with drm_object_attach_property. The returned property object must be
3549 * freed with drm_property_destroy.
3551 * Userspace is only allowed to set one of the predefined values for enumeration
3555 * A pointer to the newly created property on success, NULL on failure.
3557 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3559 const struct drm_prop_enum_list *props,
3562 struct drm_property *property;
3565 flags |= DRM_MODE_PROP_ENUM;
3567 property = drm_property_create(dev, flags, name, num_values);
3571 for (i = 0; i < num_values; i++) {
3572 ret = drm_property_add_enum(property, i,
3576 drm_property_destroy(dev, property);
3583 EXPORT_SYMBOL(drm_property_create_enum);
3586 * drm_property_create_bitmask - create a new bitmask property type
3588 * @flags: flags specifying the property type
3589 * @name: name of the property
3590 * @props: enumeration lists with property bitflags
3591 * @num_props: size of the @props array
3592 * @supported_bits: bitmask of all supported enumeration values
3594 * This creates a new bitmask drm property which can then be attached to a drm
3595 * object with drm_object_attach_property. The returned property object must be
3596 * freed with drm_property_destroy.
3598 * Compared to plain enumeration properties userspace is allowed to set any
3599 * or'ed together combination of the predefined property bitflag values
3602 * A pointer to the newly created property on success, NULL on failure.
3604 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3605 int flags, const char *name,
3606 const struct drm_prop_enum_list *props,
3608 uint64_t supported_bits)
3610 struct drm_property *property;
3611 int i, ret, index = 0;
3612 int num_values = hweight64(supported_bits);
3614 flags |= DRM_MODE_PROP_BITMASK;
3616 property = drm_property_create(dev, flags, name, num_values);
3619 for (i = 0; i < num_props; i++) {
3620 if (!(supported_bits & (1ULL << props[i].type)))
3623 if (WARN_ON(index >= num_values)) {
3624 drm_property_destroy(dev, property);
3628 ret = drm_property_add_enum(property, index++,
3632 drm_property_destroy(dev, property);
3639 EXPORT_SYMBOL(drm_property_create_bitmask);
3641 static struct drm_property *property_create_range(struct drm_device *dev,
3642 int flags, const char *name,
3643 uint64_t min, uint64_t max)
3645 struct drm_property *property;
3647 property = drm_property_create(dev, flags, name, 2);
3651 property->values[0] = min;
3652 property->values[1] = max;
3658 * drm_property_create_range - create a new ranged property type
3660 * @flags: flags specifying the property type
3661 * @name: name of the property
3662 * @min: minimum value of the property
3663 * @max: maximum value of the property
3665 * This creates a new generic drm property which can then be attached to a drm
3666 * object with drm_object_attach_property. The returned property object must be
3667 * freed with drm_property_destroy.
3669 * Userspace is allowed to set any integer value in the (min, max) range
3673 * A pointer to the newly created property on success, NULL on failure.
3675 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3677 uint64_t min, uint64_t max)
3679 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3682 EXPORT_SYMBOL(drm_property_create_range);
3684 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3685 int flags, const char *name,
3686 int64_t min, int64_t max)
3688 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3689 name, I642U64(min), I642U64(max));
3691 EXPORT_SYMBOL(drm_property_create_signed_range);
3693 struct drm_property *drm_property_create_object(struct drm_device *dev,
3694 int flags, const char *name, uint32_t type)
3696 struct drm_property *property;
3698 flags |= DRM_MODE_PROP_OBJECT;
3700 property = drm_property_create(dev, flags, name, 1);
3704 property->values[0] = type;
3708 EXPORT_SYMBOL(drm_property_create_object);
3711 * drm_property_add_enum - add a possible value to an enumeration property
3712 * @property: enumeration property to change
3713 * @index: index of the new enumeration
3714 * @value: value of the new enumeration
3715 * @name: symbolic name of the new enumeration
3717 * This functions adds enumerations to a property.
3719 * It's use is deprecated, drivers should use one of the more specific helpers
3720 * to directly create the property with all enumerations already attached.
3723 * Zero on success, error code on failure.
3725 int drm_property_add_enum(struct drm_property *property, int index,
3726 uint64_t value, const char *name)
3728 struct drm_property_enum *prop_enum;
3730 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3731 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3735 * Bitmask enum properties have the additional constraint of values
3738 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3742 if (!list_empty(&property->enum_list)) {
3743 list_for_each_entry(prop_enum, &property->enum_list, head) {
3744 if (prop_enum->value == value) {
3745 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3746 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3752 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3756 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3757 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3758 prop_enum->value = value;
3760 property->values[index] = value;
3761 list_add_tail(&prop_enum->head, &property->enum_list);
3764 EXPORT_SYMBOL(drm_property_add_enum);
3767 * drm_property_destroy - destroy a drm property
3769 * @property: property to destry
3771 * This function frees a property including any attached resources like
3772 * enumeration values.
3774 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3776 struct drm_property_enum *prop_enum, *pt;
3778 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3779 list_del(&prop_enum->head);
3783 if (property->num_values)
3784 kfree(property->values);
3785 drm_mode_object_put(dev, &property->base);
3786 list_del(&property->head);
3789 EXPORT_SYMBOL(drm_property_destroy);
3792 * drm_object_attach_property - attach a property to a modeset object
3793 * @obj: drm modeset object
3794 * @property: property to attach
3795 * @init_val: initial value of the property
3797 * This attaches the given property to the modeset object with the given initial
3798 * value. Currently this function cannot fail since the properties are stored in
3799 * a statically sized array.
3801 void drm_object_attach_property(struct drm_mode_object *obj,
3802 struct drm_property *property,
3805 int count = obj->properties->count;
3807 if (count == DRM_OBJECT_MAX_PROPERTY) {
3808 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3809 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3810 "you see this message on the same object type.\n",
3815 obj->properties->ids[count] = property->base.id;
3816 obj->properties->values[count] = init_val;
3817 obj->properties->count++;
3819 EXPORT_SYMBOL(drm_object_attach_property);
3822 * drm_object_property_set_value - set the value of a property
3823 * @obj: drm mode object to set property value for
3824 * @property: property to set
3825 * @val: value the property should be set to
3827 * This functions sets a given property on a given object. This function only
3828 * changes the software state of the property, it does not call into the
3829 * driver's ->set_property callback.
3832 * Zero on success, error code on failure.
3834 int drm_object_property_set_value(struct drm_mode_object *obj,
3835 struct drm_property *property, uint64_t val)
3839 for (i = 0; i < obj->properties->count; i++) {
3840 if (obj->properties->ids[i] == property->base.id) {
3841 obj->properties->values[i] = val;
3848 EXPORT_SYMBOL(drm_object_property_set_value);
3851 * drm_object_property_get_value - retrieve the value of a property
3852 * @obj: drm mode object to get property value from
3853 * @property: property to retrieve
3854 * @val: storage for the property value
3856 * This function retrieves the softare state of the given property for the given
3857 * property. Since there is no driver callback to retrieve the current property
3858 * value this might be out of sync with the hardware, depending upon the driver
3862 * Zero on success, error code on failure.
3864 int drm_object_property_get_value(struct drm_mode_object *obj,
3865 struct drm_property *property, uint64_t *val)
3869 for (i = 0; i < obj->properties->count; i++) {
3870 if (obj->properties->ids[i] == property->base.id) {
3871 *val = obj->properties->values[i];
3878 EXPORT_SYMBOL(drm_object_property_get_value);
3881 * drm_mode_getproperty_ioctl - get the property metadata
3884 * @file_priv: DRM file info
3886 * This function retrieves the metadata for a given property, like the different
3887 * possible values for an enum property or the limits for a range property.
3889 * Blob properties are special
3891 * Called by the user via ioctl.
3894 * Zero on success, negative errno on failure.
3896 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3897 void *data, struct drm_file *file_priv)
3899 struct drm_mode_get_property *out_resp = data;
3900 struct drm_property *property;
3902 int value_count = 0;
3905 struct drm_property_enum *prop_enum;
3906 struct drm_mode_property_enum __user *enum_ptr;
3907 uint64_t __user *values_ptr;
3909 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3912 drm_modeset_lock_all(dev);
3913 property = drm_property_find(dev, out_resp->prop_id);
3919 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3920 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3921 list_for_each_entry(prop_enum, &property->enum_list, head)
3925 value_count = property->num_values;
3927 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3928 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3929 out_resp->flags = property->flags;
3931 if ((out_resp->count_values >= value_count) && value_count) {
3932 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3933 for (i = 0; i < value_count; i++) {
3934 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3940 out_resp->count_values = value_count;
3942 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3943 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3944 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3946 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3947 list_for_each_entry(prop_enum, &property->enum_list, head) {
3949 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3954 if (copy_to_user(&enum_ptr[copied].name,
3955 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3962 out_resp->count_enum_blobs = enum_count;
3966 * NOTE: The idea seems to have been to use this to read all the blob
3967 * property values. But nothing ever added them to the corresponding
3968 * list, userspace always used the special-purpose get_blob ioctl to
3969 * read the value for a blob property. It also doesn't make a lot of
3970 * sense to return values here when everything else is just metadata for
3971 * the property itself.
3973 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
3974 out_resp->count_enum_blobs = 0;
3976 drm_modeset_unlock_all(dev);
3980 static struct drm_property_blob *
3981 drm_property_create_blob(struct drm_device *dev, size_t length,
3984 struct drm_property_blob *blob;
3987 if (!length || !data)
3990 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3994 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4000 blob->length = length;
4002 memcpy(blob->data, data, length);
4004 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
4008 static void drm_property_destroy_blob(struct drm_device *dev,
4009 struct drm_property_blob *blob)
4011 drm_mode_object_put(dev, &blob->base);
4012 list_del(&blob->head);
4017 * drm_mode_getblob_ioctl - get the contents of a blob property value
4020 * @file_priv: DRM file info
4022 * This function retrieves the contents of a blob property. The value stored in
4023 * an object's blob property is just a normal modeset object id.
4025 * Called by the user via ioctl.
4028 * Zero on success, negative errno on failure.
4030 int drm_mode_getblob_ioctl(struct drm_device *dev,
4031 void *data, struct drm_file *file_priv)
4033 struct drm_mode_get_blob *out_resp = data;
4034 struct drm_property_blob *blob;
4036 void __user *blob_ptr;
4038 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4041 drm_modeset_lock_all(dev);
4042 blob = drm_property_blob_find(dev, out_resp->blob_id);
4048 if (out_resp->length == blob->length) {
4049 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4050 if (copy_to_user(blob_ptr, blob->data, blob->length)){
4055 out_resp->length = blob->length;
4058 drm_modeset_unlock_all(dev);
4063 * drm_mode_connector_set_path_property - set tile property on connector
4064 * @connector: connector to set property on.
4065 * @path: path to use for property.
4067 * This creates a property to expose to userspace to specify a
4068 * connector path. This is mainly used for DisplayPort MST where
4069 * connectors have a topology and we want to allow userspace to give
4070 * them more meaningful names.
4073 * Zero on success, negative errno on failure.
4075 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4078 struct drm_device *dev = connector->dev;
4079 size_t size = strlen(path) + 1;
4082 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4084 if (!connector->path_blob_ptr)
4087 ret = drm_object_property_set_value(&connector->base,
4088 dev->mode_config.path_property,
4089 connector->path_blob_ptr->base.id);
4092 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4095 * drm_mode_connector_update_edid_property - update the edid property of a connector
4096 * @connector: drm connector
4097 * @edid: new value of the edid property
4099 * This function creates a new blob modeset object and assigns its id to the
4100 * connector's edid property.
4103 * Zero on success, negative errno on failure.
4105 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4106 const struct edid *edid)
4108 struct drm_device *dev = connector->dev;
4112 /* ignore requests to set edid when overridden */
4113 if (connector->override_edid)
4116 if (connector->edid_blob_ptr)
4117 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4119 /* Delete edid, when there is none. */
4121 connector->edid_blob_ptr = NULL;
4122 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4126 size = EDID_LENGTH * (1 + edid->extensions);
4127 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4129 if (!connector->edid_blob_ptr)
4132 ret = drm_object_property_set_value(&connector->base,
4133 dev->mode_config.edid_property,
4134 connector->edid_blob_ptr->base.id);
4138 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4140 static bool drm_property_change_is_valid(struct drm_property *property,
4143 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4146 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4147 if (value < property->values[0] || value > property->values[1])
4150 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4151 int64_t svalue = U642I64(value);
4152 if (svalue < U642I64(property->values[0]) ||
4153 svalue > U642I64(property->values[1]))
4156 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4158 uint64_t valid_mask = 0;
4159 for (i = 0; i < property->num_values; i++)
4160 valid_mask |= (1ULL << property->values[i]);
4161 return !(value & ~valid_mask);
4162 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4163 /* Only the driver knows */
4165 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4166 struct drm_mode_object *obj;
4167 /* a zero value for an object property translates to null: */
4171 * NOTE: use _object_find() directly to bypass restriction on
4172 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4173 * object this could race against object finalization, so it
4174 * simply tells us that the object *was* valid. Which is good
4177 obj = _object_find(property->dev, value, property->values[0]);
4181 for (i = 0; i < property->num_values; i++)
4182 if (property->values[i] == value)
4189 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4192 * @file_priv: DRM file info
4194 * This function sets the current value for a connectors's property. It also
4195 * calls into a driver's ->set_property callback to update the hardware state
4197 * Called by the user via ioctl.
4200 * Zero on success, negative errno on failure.
4202 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4203 void *data, struct drm_file *file_priv)
4205 struct drm_mode_connector_set_property *conn_set_prop = data;
4206 struct drm_mode_obj_set_property obj_set_prop = {
4207 .value = conn_set_prop->value,
4208 .prop_id = conn_set_prop->prop_id,
4209 .obj_id = conn_set_prop->connector_id,
4210 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4213 /* It does all the locking and checking we need */
4214 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4217 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4218 struct drm_property *property,
4222 struct drm_connector *connector = obj_to_connector(obj);
4224 /* Do DPMS ourselves */
4225 if (property == connector->dev->mode_config.dpms_property) {
4226 if (connector->funcs->dpms)
4227 (*connector->funcs->dpms)(connector, (int)value);
4229 } else if (connector->funcs->set_property)
4230 ret = connector->funcs->set_property(connector, property, value);
4232 /* store the property value if successful */
4234 drm_object_property_set_value(&connector->base, property, value);
4238 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4239 struct drm_property *property,
4243 struct drm_crtc *crtc = obj_to_crtc(obj);
4245 if (crtc->funcs->set_property)
4246 ret = crtc->funcs->set_property(crtc, property, value);
4248 drm_object_property_set_value(obj, property, value);
4254 * drm_mode_plane_set_obj_prop - set the value of a property
4255 * @plane: drm plane object to set property value for
4256 * @property: property to set
4257 * @value: value the property should be set to
4259 * This functions sets a given property on a given plane object. This function
4260 * calls the driver's ->set_property callback and changes the software state of
4261 * the property if the callback succeeds.
4264 * Zero on success, error code on failure.
4266 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4267 struct drm_property *property,
4271 struct drm_mode_object *obj = &plane->base;
4273 if (plane->funcs->set_property)
4274 ret = plane->funcs->set_property(plane, property, value);
4276 drm_object_property_set_value(obj, property, value);
4280 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4283 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4286 * @file_priv: DRM file info
4288 * This function retrieves the current value for an object's property. Compared
4289 * to the connector specific ioctl this one is extended to also work on crtc and
4292 * Called by the user via ioctl.
4295 * Zero on success, negative errno on failure.
4297 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4298 struct drm_file *file_priv)
4300 struct drm_mode_obj_get_properties *arg = data;
4301 struct drm_mode_object *obj;
4305 int props_count = 0;
4306 uint32_t __user *props_ptr;
4307 uint64_t __user *prop_values_ptr;
4309 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4312 drm_modeset_lock_all(dev);
4314 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4319 if (!obj->properties) {
4324 props_count = obj->properties->count;
4326 /* This ioctl is called twice, once to determine how much space is
4327 * needed, and the 2nd time to fill it. */
4328 if ((arg->count_props >= props_count) && props_count) {
4330 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
4331 prop_values_ptr = (uint64_t __user *)(unsigned long)
4332 (arg->prop_values_ptr);
4333 for (i = 0; i < props_count; i++) {
4334 if (put_user(obj->properties->ids[i],
4335 props_ptr + copied)) {
4339 if (put_user(obj->properties->values[i],
4340 prop_values_ptr + copied)) {
4347 arg->count_props = props_count;
4349 drm_modeset_unlock_all(dev);
4354 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4357 * @file_priv: DRM file info
4359 * This function sets the current value for an object's property. It also calls
4360 * into a driver's ->set_property callback to update the hardware state.
4361 * Compared to the connector specific ioctl this one is extended to also work on
4362 * crtc and plane objects.
4364 * Called by the user via ioctl.
4367 * Zero on success, negative errno on failure.
4369 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4370 struct drm_file *file_priv)
4372 struct drm_mode_obj_set_property *arg = data;
4373 struct drm_mode_object *arg_obj;
4374 struct drm_mode_object *prop_obj;
4375 struct drm_property *property;
4379 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4382 drm_modeset_lock_all(dev);
4384 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4389 if (!arg_obj->properties)
4392 for (i = 0; i < arg_obj->properties->count; i++)
4393 if (arg_obj->properties->ids[i] == arg->prop_id)
4396 if (i == arg_obj->properties->count)
4399 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4400 DRM_MODE_OBJECT_PROPERTY);
4405 property = obj_to_property(prop_obj);
4407 if (!drm_property_change_is_valid(property, arg->value))
4410 switch (arg_obj->type) {
4411 case DRM_MODE_OBJECT_CONNECTOR:
4412 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4415 case DRM_MODE_OBJECT_CRTC:
4416 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4418 case DRM_MODE_OBJECT_PLANE:
4419 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4420 property, arg->value);
4425 drm_modeset_unlock_all(dev);
4430 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4431 * @connector: connector to attach
4432 * @encoder: encoder to attach @connector to
4434 * This function links up a connector to an encoder. Note that the routing
4435 * restrictions between encoders and crtcs are exposed to userspace through the
4436 * possible_clones and possible_crtcs bitmasks.
4439 * Zero on success, negative errno on failure.
4441 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4442 struct drm_encoder *encoder)
4446 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4447 if (connector->encoder_ids[i] == 0) {
4448 connector->encoder_ids[i] = encoder->base.id;
4454 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4457 * drm_mode_crtc_set_gamma_size - set the gamma table size
4458 * @crtc: CRTC to set the gamma table size for
4459 * @gamma_size: size of the gamma table
4461 * Drivers which support gamma tables should set this to the supported gamma
4462 * table size when initializing the CRTC. Currently the drm core only supports a
4463 * fixed gamma table size.
4466 * Zero on success, negative errno on failure.
4468 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4471 crtc->gamma_size = gamma_size;
4473 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4474 if (!crtc->gamma_store) {
4475 crtc->gamma_size = 0;
4481 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4484 * drm_mode_gamma_set_ioctl - set the gamma table
4487 * @file_priv: DRM file info
4489 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4490 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4492 * Called by the user via ioctl.
4495 * Zero on success, negative errno on failure.
4497 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4498 void *data, struct drm_file *file_priv)
4500 struct drm_mode_crtc_lut *crtc_lut = data;
4501 struct drm_crtc *crtc;
4502 void *r_base, *g_base, *b_base;
4506 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4509 drm_modeset_lock_all(dev);
4510 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4516 if (crtc->funcs->gamma_set == NULL) {
4521 /* memcpy into gamma store */
4522 if (crtc_lut->gamma_size != crtc->gamma_size) {
4527 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4528 r_base = crtc->gamma_store;
4529 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4534 g_base = r_base + size;
4535 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4540 b_base = g_base + size;
4541 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4546 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4549 drm_modeset_unlock_all(dev);
4555 * drm_mode_gamma_get_ioctl - get the gamma table
4558 * @file_priv: DRM file info
4560 * Copy the current gamma table into the storage provided. This also provides
4561 * the gamma table size the driver expects, which can be used to size the
4562 * allocated storage.
4564 * Called by the user via ioctl.
4567 * Zero on success, negative errno on failure.
4569 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4570 void *data, struct drm_file *file_priv)
4572 struct drm_mode_crtc_lut *crtc_lut = data;
4573 struct drm_crtc *crtc;
4574 void *r_base, *g_base, *b_base;
4578 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4581 drm_modeset_lock_all(dev);
4582 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4588 /* memcpy into gamma store */
4589 if (crtc_lut->gamma_size != crtc->gamma_size) {
4594 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4595 r_base = crtc->gamma_store;
4596 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4601 g_base = r_base + size;
4602 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4607 b_base = g_base + size;
4608 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4613 drm_modeset_unlock_all(dev);
4618 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4621 * @file_priv: DRM file info
4623 * This schedules an asynchronous update on a given CRTC, called page flip.
4624 * Optionally a drm event is generated to signal the completion of the event.
4625 * Generic drivers cannot assume that a pageflip with changed framebuffer
4626 * properties (including driver specific metadata like tiling layout) will work,
4627 * but some drivers support e.g. pixel format changes through the pageflip
4630 * Called by the user via ioctl.
4633 * Zero on success, negative errno on failure.
4635 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4636 void *data, struct drm_file *file_priv)
4638 struct drm_mode_crtc_page_flip *page_flip = data;
4639 struct drm_crtc *crtc;
4640 struct drm_framebuffer *fb = NULL;
4641 struct drm_pending_vblank_event *e = NULL;
4642 unsigned long flags;
4645 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4646 page_flip->reserved != 0)
4649 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4652 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4656 drm_modeset_lock_crtc(crtc, crtc->primary);
4657 if (crtc->primary->fb == NULL) {
4658 /* The framebuffer is currently unbound, presumably
4659 * due to a hotplug event, that userspace has not
4666 if (crtc->funcs->page_flip == NULL)
4669 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4675 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4679 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4680 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4685 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4687 spin_lock_irqsave(&dev->event_lock, flags);
4688 if (file_priv->event_space < sizeof e->event) {
4689 spin_unlock_irqrestore(&dev->event_lock, flags);
4692 file_priv->event_space -= sizeof e->event;
4693 spin_unlock_irqrestore(&dev->event_lock, flags);
4695 e = kzalloc(sizeof *e, GFP_KERNEL);
4697 spin_lock_irqsave(&dev->event_lock, flags);
4698 file_priv->event_space += sizeof e->event;
4699 spin_unlock_irqrestore(&dev->event_lock, flags);
4703 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4704 e->event.base.length = sizeof e->event;
4705 e->event.user_data = page_flip->user_data;
4706 e->base.event = &e->event.base;
4707 e->base.file_priv = file_priv;
4709 (void (*) (struct drm_pending_event *)) kfree;
4712 crtc->primary->old_fb = crtc->primary->fb;
4713 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4715 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4716 spin_lock_irqsave(&dev->event_lock, flags);
4717 file_priv->event_space += sizeof e->event;
4718 spin_unlock_irqrestore(&dev->event_lock, flags);
4721 /* Keep the old fb, don't unref it. */
4722 crtc->primary->old_fb = NULL;
4725 * Warn if the driver hasn't properly updated the crtc->fb
4726 * field to reflect that the new framebuffer is now used.
4727 * Failing to do so will screw with the reference counting
4730 WARN_ON(crtc->primary->fb != fb);
4731 /* Unref only the old framebuffer. */
4737 drm_framebuffer_unreference(fb);
4738 if (crtc->primary->old_fb)
4739 drm_framebuffer_unreference(crtc->primary->old_fb);
4740 crtc->primary->old_fb = NULL;
4741 drm_modeset_unlock_crtc(crtc);
4747 * drm_mode_config_reset - call ->reset callbacks
4750 * This functions calls all the crtc's, encoder's and connector's ->reset
4751 * callback. Drivers can use this in e.g. their driver load or resume code to
4752 * reset hardware and software state.
4754 void drm_mode_config_reset(struct drm_device *dev)
4756 struct drm_crtc *crtc;
4757 struct drm_plane *plane;
4758 struct drm_encoder *encoder;
4759 struct drm_connector *connector;
4761 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4762 if (plane->funcs->reset)
4763 plane->funcs->reset(plane);
4765 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4766 if (crtc->funcs->reset)
4767 crtc->funcs->reset(crtc);
4769 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4770 if (encoder->funcs->reset)
4771 encoder->funcs->reset(encoder);
4773 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4774 connector->status = connector_status_unknown;
4776 if (connector->funcs->reset)
4777 connector->funcs->reset(connector);
4780 EXPORT_SYMBOL(drm_mode_config_reset);
4783 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4786 * @file_priv: DRM file info
4788 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4789 * TTM or something else entirely) and returns the resulting buffer handle. This
4790 * handle can then be wrapped up into a framebuffer modeset object.
4792 * Note that userspace is not allowed to use such objects for render
4793 * acceleration - drivers must create their own private ioctls for such a use
4796 * Called by the user via ioctl.
4799 * Zero on success, negative errno on failure.
4801 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4802 void *data, struct drm_file *file_priv)
4804 struct drm_mode_create_dumb *args = data;
4805 u32 cpp, stride, size;
4807 if (!dev->driver->dumb_create)
4809 if (!args->width || !args->height || !args->bpp)
4812 /* overflow checks for 32bit size calculations */
4813 /* NOTE: DIV_ROUND_UP() can overflow */
4814 cpp = DIV_ROUND_UP(args->bpp, 8);
4815 if (!cpp || cpp > 0xffffffffU / args->width)
4817 stride = cpp * args->width;
4818 if (args->height > 0xffffffffU / stride)
4821 /* test for wrap-around */
4822 size = args->height * stride;
4823 if (PAGE_ALIGN(size) == 0)
4827 * handle, pitch and size are output parameters. Zero them out to
4828 * prevent drivers from accidentally using uninitialized data. Since
4829 * not all existing userspace is clearing these fields properly we
4830 * cannot reject IOCTL with garbage in them.
4836 return dev->driver->dumb_create(file_priv, dev, args);
4840 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4843 * @file_priv: DRM file info
4845 * Allocate an offset in the drm device node's address space to be able to
4846 * memory map a dumb buffer.
4848 * Called by the user via ioctl.
4851 * Zero on success, negative errno on failure.
4853 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4854 void *data, struct drm_file *file_priv)
4856 struct drm_mode_map_dumb *args = data;
4858 /* call driver ioctl to get mmap offset */
4859 if (!dev->driver->dumb_map_offset)
4862 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4866 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4869 * @file_priv: DRM file info
4871 * This destroys the userspace handle for the given dumb backing storage buffer.
4872 * Since buffer objects must be reference counted in the kernel a buffer object
4873 * won't be immediately freed if a framebuffer modeset object still uses it.
4875 * Called by the user via ioctl.
4878 * Zero on success, negative errno on failure.
4880 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4881 void *data, struct drm_file *file_priv)
4883 struct drm_mode_destroy_dumb *args = data;
4885 if (!dev->driver->dumb_destroy)
4888 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4892 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4893 * @format: pixel format (DRM_FORMAT_*)
4894 * @depth: storage for the depth value
4895 * @bpp: storage for the bpp value
4897 * This only supports RGB formats here for compat with code that doesn't use
4898 * pixel formats directly yet.
4900 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4905 case DRM_FORMAT_RGB332:
4906 case DRM_FORMAT_BGR233:
4910 case DRM_FORMAT_XRGB1555:
4911 case DRM_FORMAT_XBGR1555:
4912 case DRM_FORMAT_RGBX5551:
4913 case DRM_FORMAT_BGRX5551:
4914 case DRM_FORMAT_ARGB1555:
4915 case DRM_FORMAT_ABGR1555:
4916 case DRM_FORMAT_RGBA5551:
4917 case DRM_FORMAT_BGRA5551:
4921 case DRM_FORMAT_RGB565:
4922 case DRM_FORMAT_BGR565:
4926 case DRM_FORMAT_RGB888:
4927 case DRM_FORMAT_BGR888:
4931 case DRM_FORMAT_XRGB8888:
4932 case DRM_FORMAT_XBGR8888:
4933 case DRM_FORMAT_RGBX8888:
4934 case DRM_FORMAT_BGRX8888:
4938 case DRM_FORMAT_XRGB2101010:
4939 case DRM_FORMAT_XBGR2101010:
4940 case DRM_FORMAT_RGBX1010102:
4941 case DRM_FORMAT_BGRX1010102:
4942 case DRM_FORMAT_ARGB2101010:
4943 case DRM_FORMAT_ABGR2101010:
4944 case DRM_FORMAT_RGBA1010102:
4945 case DRM_FORMAT_BGRA1010102:
4949 case DRM_FORMAT_ARGB8888:
4950 case DRM_FORMAT_ABGR8888:
4951 case DRM_FORMAT_RGBA8888:
4952 case DRM_FORMAT_BGRA8888:
4957 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4958 drm_get_format_name(format));
4964 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4967 * drm_format_num_planes - get the number of planes for format
4968 * @format: pixel format (DRM_FORMAT_*)
4971 * The number of planes used by the specified pixel format.
4973 int drm_format_num_planes(uint32_t format)
4976 case DRM_FORMAT_YUV410:
4977 case DRM_FORMAT_YVU410:
4978 case DRM_FORMAT_YUV411:
4979 case DRM_FORMAT_YVU411:
4980 case DRM_FORMAT_YUV420:
4981 case DRM_FORMAT_YVU420:
4982 case DRM_FORMAT_YUV422:
4983 case DRM_FORMAT_YVU422:
4984 case DRM_FORMAT_YUV444:
4985 case DRM_FORMAT_YVU444:
4987 case DRM_FORMAT_NV12:
4988 case DRM_FORMAT_NV21:
4989 case DRM_FORMAT_NV16:
4990 case DRM_FORMAT_NV61:
4991 case DRM_FORMAT_NV24:
4992 case DRM_FORMAT_NV42:
4998 EXPORT_SYMBOL(drm_format_num_planes);
5001 * drm_format_plane_cpp - determine the bytes per pixel value
5002 * @format: pixel format (DRM_FORMAT_*)
5003 * @plane: plane index
5006 * The bytes per pixel value for the specified plane.
5008 int drm_format_plane_cpp(uint32_t format, int plane)
5013 if (plane >= drm_format_num_planes(format))
5017 case DRM_FORMAT_YUYV:
5018 case DRM_FORMAT_YVYU:
5019 case DRM_FORMAT_UYVY:
5020 case DRM_FORMAT_VYUY:
5022 case DRM_FORMAT_NV12:
5023 case DRM_FORMAT_NV21:
5024 case DRM_FORMAT_NV16:
5025 case DRM_FORMAT_NV61:
5026 case DRM_FORMAT_NV24:
5027 case DRM_FORMAT_NV42:
5028 return plane ? 2 : 1;
5029 case DRM_FORMAT_YUV410:
5030 case DRM_FORMAT_YVU410:
5031 case DRM_FORMAT_YUV411:
5032 case DRM_FORMAT_YVU411:
5033 case DRM_FORMAT_YUV420:
5034 case DRM_FORMAT_YVU420:
5035 case DRM_FORMAT_YUV422:
5036 case DRM_FORMAT_YVU422:
5037 case DRM_FORMAT_YUV444:
5038 case DRM_FORMAT_YVU444:
5041 drm_fb_get_bpp_depth(format, &depth, &bpp);
5045 EXPORT_SYMBOL(drm_format_plane_cpp);
5048 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5049 * @format: pixel format (DRM_FORMAT_*)
5052 * The horizontal chroma subsampling factor for the
5053 * specified pixel format.
5055 int drm_format_horz_chroma_subsampling(uint32_t format)
5058 case DRM_FORMAT_YUV411:
5059 case DRM_FORMAT_YVU411:
5060 case DRM_FORMAT_YUV410:
5061 case DRM_FORMAT_YVU410:
5063 case DRM_FORMAT_YUYV:
5064 case DRM_FORMAT_YVYU:
5065 case DRM_FORMAT_UYVY:
5066 case DRM_FORMAT_VYUY:
5067 case DRM_FORMAT_NV12:
5068 case DRM_FORMAT_NV21:
5069 case DRM_FORMAT_NV16:
5070 case DRM_FORMAT_NV61:
5071 case DRM_FORMAT_YUV422:
5072 case DRM_FORMAT_YVU422:
5073 case DRM_FORMAT_YUV420:
5074 case DRM_FORMAT_YVU420:
5080 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5083 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5084 * @format: pixel format (DRM_FORMAT_*)
5087 * The vertical chroma subsampling factor for the
5088 * specified pixel format.
5090 int drm_format_vert_chroma_subsampling(uint32_t format)
5093 case DRM_FORMAT_YUV410:
5094 case DRM_FORMAT_YVU410:
5096 case DRM_FORMAT_YUV420:
5097 case DRM_FORMAT_YVU420:
5098 case DRM_FORMAT_NV12:
5099 case DRM_FORMAT_NV21:
5105 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5108 * drm_rotation_simplify() - Try to simplify the rotation
5109 * @rotation: Rotation to be simplified
5110 * @supported_rotations: Supported rotations
5112 * Attempt to simplify the rotation to a form that is supported.
5113 * Eg. if the hardware supports everything except DRM_REFLECT_X
5114 * one could call this function like this:
5116 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5117 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5118 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5120 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5121 * transforms the hardware supports, this function may not
5122 * be able to produce a supported transform, so the caller should
5123 * check the result afterwards.
5125 unsigned int drm_rotation_simplify(unsigned int rotation,
5126 unsigned int supported_rotations)
5128 if (rotation & ~supported_rotations) {
5129 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5130 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5135 EXPORT_SYMBOL(drm_rotation_simplify);
5138 * drm_mode_config_init - initialize DRM mode_configuration structure
5141 * Initialize @dev's mode_config structure, used for tracking the graphics
5142 * configuration of @dev.
5144 * Since this initializes the modeset locks, no locking is possible. Which is no
5145 * problem, since this should happen single threaded at init time. It is the
5146 * driver's problem to ensure this guarantee.
5149 void drm_mode_config_init(struct drm_device *dev)
5151 mutex_init(&dev->mode_config.mutex);
5152 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5153 mutex_init(&dev->mode_config.idr_mutex);
5154 mutex_init(&dev->mode_config.fb_lock);
5155 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5156 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5157 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5158 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
5159 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5160 INIT_LIST_HEAD(&dev->mode_config.property_list);
5161 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5162 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5163 idr_init(&dev->mode_config.crtc_idr);
5165 drm_modeset_lock_all(dev);
5166 drm_mode_create_standard_connector_properties(dev);
5167 drm_mode_create_standard_plane_properties(dev);
5168 drm_modeset_unlock_all(dev);
5170 /* Just to be sure */
5171 dev->mode_config.num_fb = 0;
5172 dev->mode_config.num_connector = 0;
5173 dev->mode_config.num_crtc = 0;
5174 dev->mode_config.num_encoder = 0;
5175 dev->mode_config.num_overlay_plane = 0;
5176 dev->mode_config.num_total_plane = 0;
5178 EXPORT_SYMBOL(drm_mode_config_init);
5181 * drm_mode_config_cleanup - free up DRM mode_config info
5184 * Free up all the connectors and CRTCs associated with this DRM device, then
5185 * free up the framebuffers and associated buffer objects.
5187 * Note that since this /should/ happen single-threaded at driver/device
5188 * teardown time, no locking is required. It's the driver's job to ensure that
5189 * this guarantee actually holds true.
5191 * FIXME: cleanup any dangling user buffer objects too
5193 void drm_mode_config_cleanup(struct drm_device *dev)
5195 struct drm_connector *connector, *ot;
5196 struct drm_crtc *crtc, *ct;
5197 struct drm_encoder *encoder, *enct;
5198 struct drm_bridge *bridge, *brt;
5199 struct drm_framebuffer *fb, *fbt;
5200 struct drm_property *property, *pt;
5201 struct drm_property_blob *blob, *bt;
5202 struct drm_plane *plane, *plt;
5204 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5206 encoder->funcs->destroy(encoder);
5209 list_for_each_entry_safe(bridge, brt,
5210 &dev->mode_config.bridge_list, head) {
5211 bridge->funcs->destroy(bridge);
5214 list_for_each_entry_safe(connector, ot,
5215 &dev->mode_config.connector_list, head) {
5216 connector->funcs->destroy(connector);
5219 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5221 drm_property_destroy(dev, property);
5224 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5226 drm_property_destroy_blob(dev, blob);
5230 * Single-threaded teardown context, so it's not required to grab the
5231 * fb_lock to protect against concurrent fb_list access. Contrary, it
5232 * would actually deadlock with the drm_framebuffer_cleanup function.
5234 * Also, if there are any framebuffers left, that's a driver leak now,
5235 * so politely WARN about this.
5237 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5238 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5239 drm_framebuffer_remove(fb);
5242 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5244 plane->funcs->destroy(plane);
5247 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5248 crtc->funcs->destroy(crtc);
5251 idr_destroy(&dev->mode_config.crtc_idr);
5252 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5254 EXPORT_SYMBOL(drm_mode_config_cleanup);
5256 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5257 unsigned int supported_rotations)
5259 static const struct drm_prop_enum_list props[] = {
5260 { DRM_ROTATE_0, "rotate-0" },
5261 { DRM_ROTATE_90, "rotate-90" },
5262 { DRM_ROTATE_180, "rotate-180" },
5263 { DRM_ROTATE_270, "rotate-270" },
5264 { DRM_REFLECT_X, "reflect-x" },
5265 { DRM_REFLECT_Y, "reflect-y" },
5268 return drm_property_create_bitmask(dev, 0, "rotation",
5269 props, ARRAY_SIZE(props),
5270 supported_rotations);
5272 EXPORT_SYMBOL(drm_mode_create_rotation_property);