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>
41 #include <drm/drm_atomic.h>
42 #include <drm/drm_auth.h>
44 #include "drm_crtc_internal.h"
45 #include "drm_internal.h"
47 static struct drm_framebuffer
*
48 internal_framebuffer_create(struct drm_device
*dev
,
49 const struct drm_mode_fb_cmd2
*r
,
50 struct drm_file
*file_priv
);
52 /* Avoid boilerplate. I'm tired of typing. */
53 #define DRM_ENUM_NAME_FN(fnname, list) \
54 const char *fnname(int val) \
57 for (i = 0; i < ARRAY_SIZE(list); i++) { \
58 if (list[i].type == val) \
59 return list[i].name; \
67 static const struct drm_prop_enum_list drm_dpms_enum_list
[] = {
68 { DRM_MODE_DPMS_ON
, "On" },
69 { DRM_MODE_DPMS_STANDBY
, "Standby" },
70 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
71 { DRM_MODE_DPMS_OFF
, "Off" }
74 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
76 static const struct drm_prop_enum_list drm_plane_type_enum_list
[] = {
77 { DRM_PLANE_TYPE_OVERLAY
, "Overlay" },
78 { DRM_PLANE_TYPE_PRIMARY
, "Primary" },
79 { DRM_PLANE_TYPE_CURSOR
, "Cursor" },
85 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] = {
86 { DRM_MODE_SCALE_NONE
, "None" },
87 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
88 { DRM_MODE_SCALE_CENTER
, "Center" },
89 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
92 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list
[] = {
93 { DRM_MODE_PICTURE_ASPECT_NONE
, "Automatic" },
94 { DRM_MODE_PICTURE_ASPECT_4_3
, "4:3" },
95 { DRM_MODE_PICTURE_ASPECT_16_9
, "16:9" },
99 * Non-global properties, but "required" for certain connectors.
101 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
[] = {
110 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
111 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
112 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
115 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
116 drm_dvi_i_subconnector_enum_list
)
118 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] = {
119 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
120 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
122 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
126 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
128 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] = {
129 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
130 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
132 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
133 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
136 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
137 drm_tv_subconnector_enum_list
)
139 static const struct drm_prop_enum_list drm_dirty_info_enum_list
[] = {
140 { DRM_MODE_DIRTY_OFF
, "Off" },
141 { DRM_MODE_DIRTY_ON
, "On" },
142 { DRM_MODE_DIRTY_ANNOTATE
, "Annotate" },
145 struct drm_conn_prop_enum_list
{
152 * Connector and encoder types.
154 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] = {
155 { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
156 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
157 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
158 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
159 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
160 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
161 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
162 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
163 { DRM_MODE_CONNECTOR_Component
, "Component" },
164 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
165 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
166 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
167 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
168 { DRM_MODE_CONNECTOR_TV
, "TV" },
169 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
170 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
171 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
172 { DRM_MODE_CONNECTOR_DPI
, "DPI" },
175 static const struct drm_prop_enum_list drm_encoder_enum_list
[] = {
176 { DRM_MODE_ENCODER_NONE
, "None" },
177 { DRM_MODE_ENCODER_DAC
, "DAC" },
178 { DRM_MODE_ENCODER_TMDS
, "TMDS" },
179 { DRM_MODE_ENCODER_LVDS
, "LVDS" },
180 { DRM_MODE_ENCODER_TVDAC
, "TV" },
181 { DRM_MODE_ENCODER_VIRTUAL
, "Virtual" },
182 { DRM_MODE_ENCODER_DSI
, "DSI" },
183 { DRM_MODE_ENCODER_DPMST
, "DP MST" },
184 { DRM_MODE_ENCODER_DPI
, "DPI" },
187 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] = {
188 { SubPixelUnknown
, "Unknown" },
189 { SubPixelHorizontalRGB
, "Horizontal RGB" },
190 { SubPixelHorizontalBGR
, "Horizontal BGR" },
191 { SubPixelVerticalRGB
, "Vertical RGB" },
192 { SubPixelVerticalBGR
, "Vertical BGR" },
193 { SubPixelNone
, "None" },
196 void drm_connector_ida_init(void)
200 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
201 ida_init(&drm_connector_enum_list
[i
].ida
);
204 void drm_connector_ida_destroy(void)
208 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
209 ida_destroy(&drm_connector_enum_list
[i
].ida
);
213 * drm_get_connector_status_name - return a string for connector status
214 * @status: connector status to compute name of
216 * In contrast to the other drm_get_*_name functions this one here returns a
217 * const pointer and hence is threadsafe.
219 const char *drm_get_connector_status_name(enum drm_connector_status status
)
221 if (status
== connector_status_connected
)
223 else if (status
== connector_status_disconnected
)
224 return "disconnected";
228 EXPORT_SYMBOL(drm_get_connector_status_name
);
231 * drm_get_subpixel_order_name - return a string for a given subpixel enum
232 * @order: enum of subpixel_order
234 * Note you could abuse this and return something out of bounds, but that
235 * would be a caller error. No unscrubbed user data should make it here.
237 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
239 return drm_subpixel_enum_list
[order
].name
;
241 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
244 * Internal function to assign a slot in the object idr and optionally
245 * register the object into the idr.
247 static int drm_mode_object_get_reg(struct drm_device
*dev
,
248 struct drm_mode_object
*obj
,
251 void (*obj_free_cb
)(struct kref
*kref
))
255 mutex_lock(&dev
->mode_config
.idr_mutex
);
256 ret
= idr_alloc(&dev
->mode_config
.crtc_idr
, register_obj
? obj
: NULL
, 1, 0, GFP_KERNEL
);
259 * Set up the object linking under the protection of the idr
260 * lock so that other users can't see inconsistent state.
263 obj
->type
= obj_type
;
265 obj
->free_cb
= obj_free_cb
;
266 kref_init(&obj
->refcount
);
269 mutex_unlock(&dev
->mode_config
.idr_mutex
);
271 return ret
< 0 ? ret
: 0;
275 * drm_mode_object_get - allocate a new modeset identifier
277 * @obj: object pointer, used to generate unique ID
278 * @obj_type: object type
280 * Create a unique identifier based on @ptr in @dev's identifier space. Used
281 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
282 * modeset identifiers are _not_ reference counted. Hence don't use this for
283 * reference counted modeset objects like framebuffers.
286 * Zero on success, error code on failure.
288 int drm_mode_object_get(struct drm_device
*dev
,
289 struct drm_mode_object
*obj
, uint32_t obj_type
)
291 return drm_mode_object_get_reg(dev
, obj
, obj_type
, true, NULL
);
294 static void drm_mode_object_register(struct drm_device
*dev
,
295 struct drm_mode_object
*obj
)
297 mutex_lock(&dev
->mode_config
.idr_mutex
);
298 idr_replace(&dev
->mode_config
.crtc_idr
, obj
, obj
->id
);
299 mutex_unlock(&dev
->mode_config
.idr_mutex
);
303 * drm_mode_object_unregister - free a modeset identifer
305 * @object: object to free
307 * Free @id from @dev's unique identifier pool.
308 * This function can be called multiple times, and guards against
310 * These modeset identifiers are _not_ reference counted. Hence don't use this
311 * for reference counted modeset objects like framebuffers.
313 void drm_mode_object_unregister(struct drm_device
*dev
,
314 struct drm_mode_object
*object
)
316 mutex_lock(&dev
->mode_config
.idr_mutex
);
318 idr_remove(&dev
->mode_config
.crtc_idr
, object
->id
);
321 mutex_unlock(&dev
->mode_config
.idr_mutex
);
324 static struct drm_mode_object
*_object_find(struct drm_device
*dev
,
325 uint32_t id
, uint32_t type
)
327 struct drm_mode_object
*obj
= NULL
;
329 mutex_lock(&dev
->mode_config
.idr_mutex
);
330 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
331 if (obj
&& type
!= DRM_MODE_OBJECT_ANY
&& obj
->type
!= type
)
333 if (obj
&& obj
->id
!= id
)
336 if (obj
&& obj
->free_cb
) {
337 if (!kref_get_unless_zero(&obj
->refcount
))
340 mutex_unlock(&dev
->mode_config
.idr_mutex
);
346 * drm_mode_object_find - look up a drm object with static lifetime
348 * @id: id of the mode object
349 * @type: type of the mode object
351 * This function is used to look up a modeset object. It will acquire a
352 * reference for reference counted objects. This reference must be dropped again
353 * by callind drm_mode_object_unreference().
355 struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
356 uint32_t id
, uint32_t type
)
358 struct drm_mode_object
*obj
= NULL
;
360 obj
= _object_find(dev
, id
, type
);
363 EXPORT_SYMBOL(drm_mode_object_find
);
366 * drm_mode_object_unreference - decr the object refcnt
369 * This functions decrements the object's refcount if it is a refcounted modeset
370 * object. It is a no-op on any other object. This is used to drop references
371 * acquired with drm_mode_object_reference().
373 void drm_mode_object_unreference(struct drm_mode_object
*obj
)
376 DRM_DEBUG("OBJ ID: %d (%d)\n", obj
->id
, atomic_read(&obj
->refcount
.refcount
));
377 kref_put(&obj
->refcount
, obj
->free_cb
);
380 EXPORT_SYMBOL(drm_mode_object_unreference
);
383 * drm_mode_object_reference - incr the object refcnt
386 * This functions increments the object's refcount if it is a refcounted modeset
387 * object. It is a no-op on any other object. References should be dropped again
388 * by calling drm_mode_object_unreference().
390 void drm_mode_object_reference(struct drm_mode_object
*obj
)
393 DRM_DEBUG("OBJ ID: %d (%d)\n", obj
->id
, atomic_read(&obj
->refcount
.refcount
));
394 kref_get(&obj
->refcount
);
397 EXPORT_SYMBOL(drm_mode_object_reference
);
400 * drm_crtc_force_disable - Forcibly turn off a CRTC
401 * @crtc: CRTC to turn off
404 * Zero on success, error code on failure.
406 int drm_crtc_force_disable(struct drm_crtc
*crtc
)
408 struct drm_mode_set set
= {
412 return drm_mode_set_config_internal(&set
);
414 EXPORT_SYMBOL(drm_crtc_force_disable
);
417 * drm_crtc_force_disable_all - Forcibly turn off all enabled CRTCs
418 * @dev: DRM device whose CRTCs to turn off
420 * Drivers may want to call this on unload to ensure that all displays are
421 * unlit and the GPU is in a consistent, low power state. Takes modeset locks.
424 * Zero on success, error code on failure.
426 int drm_crtc_force_disable_all(struct drm_device
*dev
)
428 struct drm_crtc
*crtc
;
431 drm_modeset_lock_all(dev
);
432 drm_for_each_crtc(crtc
, dev
)
434 ret
= drm_crtc_force_disable(crtc
);
439 drm_modeset_unlock_all(dev
);
442 EXPORT_SYMBOL(drm_crtc_force_disable_all
);
444 static void drm_framebuffer_free(struct kref
*kref
)
446 struct drm_framebuffer
*fb
=
447 container_of(kref
, struct drm_framebuffer
, base
.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 drm_mode_object_unregister(dev
, &fb
->base
);
456 fb
->funcs
->destroy(fb
);
460 * drm_framebuffer_init - initialize a framebuffer
462 * @fb: framebuffer to be initialized
463 * @funcs: ... with these functions
465 * Allocates an ID for the framebuffer's parent mode object, sets its mode
466 * functions & device file and adds it to the master fd list.
469 * This functions publishes the fb and makes it available for concurrent access
470 * by other users. Which means by this point the fb _must_ be fully set up -
471 * since all the fb attributes are invariant over its lifetime, no further
472 * locking but only correct reference counting is required.
475 * Zero on success, error code on failure.
477 int drm_framebuffer_init(struct drm_device
*dev
, struct drm_framebuffer
*fb
,
478 const struct drm_framebuffer_funcs
*funcs
)
482 INIT_LIST_HEAD(&fb
->filp_head
);
486 ret
= drm_mode_object_get_reg(dev
, &fb
->base
, DRM_MODE_OBJECT_FB
,
487 false, drm_framebuffer_free
);
491 mutex_lock(&dev
->mode_config
.fb_lock
);
492 dev
->mode_config
.num_fb
++;
493 list_add(&fb
->head
, &dev
->mode_config
.fb_list
);
494 mutex_unlock(&dev
->mode_config
.fb_lock
);
496 drm_mode_object_register(dev
, &fb
->base
);
500 EXPORT_SYMBOL(drm_framebuffer_init
);
503 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
505 * @id: id of the fb object
507 * If successful, this grabs an additional reference to the framebuffer -
508 * callers need to make sure to eventually unreference the returned framebuffer
509 * again, using @drm_framebuffer_unreference.
511 struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
514 struct drm_mode_object
*obj
;
515 struct drm_framebuffer
*fb
= NULL
;
517 obj
= _object_find(dev
, id
, DRM_MODE_OBJECT_FB
);
522 EXPORT_SYMBOL(drm_framebuffer_lookup
);
525 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
526 * @fb: fb to unregister
528 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
529 * those used for fbdev. Note that the caller must hold a reference of it's own,
530 * i.e. the object may not be destroyed through this call (since it'll lead to a
531 * locking inversion).
533 void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
)
535 struct drm_device
*dev
;
542 /* Mark fb as reaped and drop idr ref. */
543 drm_mode_object_unregister(dev
, &fb
->base
);
545 EXPORT_SYMBOL(drm_framebuffer_unregister_private
);
548 * drm_framebuffer_cleanup - remove a framebuffer object
549 * @fb: framebuffer to remove
551 * Cleanup framebuffer. This function is intended to be used from the drivers
552 * ->destroy callback. It can also be used to clean up driver private
553 * framebuffers embedded into a larger structure.
555 * Note that this function does not remove the fb from active usuage - if it is
556 * still used anywhere, hilarity can ensue since userspace could call getfb on
557 * the id and get back -EINVAL. Obviously no concern at driver unload time.
559 * Also, the framebuffer will not be removed from the lookup idr - for
560 * user-created framebuffers this will happen in in the rmfb ioctl. For
561 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
562 * drm_framebuffer_unregister_private.
564 void drm_framebuffer_cleanup(struct drm_framebuffer
*fb
)
566 struct drm_device
*dev
= fb
->dev
;
568 mutex_lock(&dev
->mode_config
.fb_lock
);
570 dev
->mode_config
.num_fb
--;
571 mutex_unlock(&dev
->mode_config
.fb_lock
);
573 EXPORT_SYMBOL(drm_framebuffer_cleanup
);
576 * drm_framebuffer_remove - remove and unreference a framebuffer object
577 * @fb: framebuffer to remove
579 * Scans all the CRTCs and planes in @dev's mode_config. If they're
580 * using @fb, removes it, setting it to NULL. Then drops the reference to the
581 * passed-in framebuffer. Might take the modeset locks.
583 * Note that this function optimizes the cleanup away if the caller holds the
584 * last reference to the framebuffer. It is also guaranteed to not take the
585 * modeset locks in this case.
587 void drm_framebuffer_remove(struct drm_framebuffer
*fb
)
589 struct drm_device
*dev
;
590 struct drm_crtc
*crtc
;
591 struct drm_plane
*plane
;
598 WARN_ON(!list_empty(&fb
->filp_head
));
601 * drm ABI mandates that we remove any deleted framebuffers from active
602 * useage. But since most sane clients only remove framebuffers they no
603 * longer need, try to optimize this away.
605 * Since we're holding a reference ourselves, observing a refcount of 1
606 * means that we're the last holder and can skip it. Also, the refcount
607 * can never increase from 1 again, so we don't need any barriers or
610 * Note that userspace could try to race with use and instate a new
611 * usage _after_ we've cleared all current ones. End result will be an
612 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
615 if (drm_framebuffer_read_refcount(fb
) > 1) {
616 drm_modeset_lock_all(dev
);
617 /* remove from any CRTC */
618 drm_for_each_crtc(crtc
, dev
) {
619 if (crtc
->primary
->fb
== fb
) {
620 /* should turn off the crtc */
621 if (drm_crtc_force_disable(crtc
))
622 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc
);
626 drm_for_each_plane(plane
, dev
) {
628 drm_plane_force_disable(plane
);
630 drm_modeset_unlock_all(dev
);
633 drm_framebuffer_unreference(fb
);
635 EXPORT_SYMBOL(drm_framebuffer_remove
);
637 DEFINE_WW_CLASS(crtc_ww_class
);
639 static unsigned int drm_num_crtcs(struct drm_device
*dev
)
641 unsigned int num
= 0;
642 struct drm_crtc
*tmp
;
644 drm_for_each_crtc(tmp
, dev
) {
651 static int drm_crtc_register_all(struct drm_device
*dev
)
653 struct drm_crtc
*crtc
;
656 drm_for_each_crtc(crtc
, dev
) {
657 if (crtc
->funcs
->late_register
)
658 ret
= crtc
->funcs
->late_register(crtc
);
666 static void drm_crtc_unregister_all(struct drm_device
*dev
)
668 struct drm_crtc
*crtc
;
670 drm_for_each_crtc(crtc
, dev
) {
671 if (crtc
->funcs
->early_unregister
)
672 crtc
->funcs
->early_unregister(crtc
);
677 * drm_crtc_init_with_planes - Initialise a new CRTC object with
678 * specified primary and cursor planes.
680 * @crtc: CRTC object to init
681 * @primary: Primary plane for CRTC
682 * @cursor: Cursor plane for CRTC
683 * @funcs: callbacks for the new CRTC
684 * @name: printf style format string for the CRTC name, or NULL for default name
686 * Inits a new object created as base part of a driver crtc object.
689 * Zero on success, error code on failure.
691 int drm_crtc_init_with_planes(struct drm_device
*dev
, struct drm_crtc
*crtc
,
692 struct drm_plane
*primary
,
693 struct drm_plane
*cursor
,
694 const struct drm_crtc_funcs
*funcs
,
695 const char *name
, ...)
697 struct drm_mode_config
*config
= &dev
->mode_config
;
700 WARN_ON(primary
&& primary
->type
!= DRM_PLANE_TYPE_PRIMARY
);
701 WARN_ON(cursor
&& cursor
->type
!= DRM_PLANE_TYPE_CURSOR
);
706 INIT_LIST_HEAD(&crtc
->commit_list
);
707 spin_lock_init(&crtc
->commit_lock
);
709 drm_modeset_lock_init(&crtc
->mutex
);
710 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
718 crtc
->name
= kvasprintf(GFP_KERNEL
, name
, ap
);
721 crtc
->name
= kasprintf(GFP_KERNEL
, "crtc-%d",
725 drm_mode_object_unregister(dev
, &crtc
->base
);
729 crtc
->base
.properties
= &crtc
->properties
;
731 list_add_tail(&crtc
->head
, &config
->crtc_list
);
732 crtc
->index
= config
->num_crtc
++;
734 crtc
->primary
= primary
;
735 crtc
->cursor
= cursor
;
737 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
739 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
741 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
742 drm_object_attach_property(&crtc
->base
, config
->prop_active
, 0);
743 drm_object_attach_property(&crtc
->base
, config
->prop_mode_id
, 0);
748 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
751 * drm_crtc_cleanup - Clean up the core crtc usage
752 * @crtc: CRTC to cleanup
754 * This function cleans up @crtc and removes it from the DRM mode setting
755 * core. Note that the function does *not* free the crtc structure itself,
756 * this is the responsibility of the caller.
758 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
760 struct drm_device
*dev
= crtc
->dev
;
762 /* Note that the crtc_list is considered to be static; should we
763 * remove the drm_crtc at runtime we would have to decrement all
764 * the indices on the drm_crtc after us in the crtc_list.
767 kfree(crtc
->gamma_store
);
768 crtc
->gamma_store
= NULL
;
770 drm_modeset_lock_fini(&crtc
->mutex
);
772 drm_mode_object_unregister(dev
, &crtc
->base
);
773 list_del(&crtc
->head
);
774 dev
->mode_config
.num_crtc
--;
776 WARN_ON(crtc
->state
&& !crtc
->funcs
->atomic_destroy_state
);
777 if (crtc
->state
&& crtc
->funcs
->atomic_destroy_state
)
778 crtc
->funcs
->atomic_destroy_state(crtc
, crtc
->state
);
782 memset(crtc
, 0, sizeof(*crtc
));
784 EXPORT_SYMBOL(drm_crtc_cleanup
);
787 * drm_mode_remove - remove and free a mode
788 * @connector: connector list to modify
789 * @mode: mode to remove
791 * Remove @mode from @connector's mode list, then free it.
793 static void drm_mode_remove(struct drm_connector
*connector
,
794 struct drm_display_mode
*mode
)
796 list_del(&mode
->head
);
797 drm_mode_destroy(connector
->dev
, mode
);
801 * drm_display_info_set_bus_formats - set the supported bus formats
802 * @info: display info to store bus formats in
803 * @formats: array containing the supported bus formats
804 * @num_formats: the number of entries in the fmts array
806 * Store the supported bus formats in display info structure.
807 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
808 * a full list of available formats.
810 int drm_display_info_set_bus_formats(struct drm_display_info
*info
,
812 unsigned int num_formats
)
816 if (!formats
&& num_formats
)
819 if (formats
&& num_formats
) {
820 fmts
= kmemdup(formats
, sizeof(*formats
) * num_formats
,
826 kfree(info
->bus_formats
);
827 info
->bus_formats
= fmts
;
828 info
->num_bus_formats
= num_formats
;
832 EXPORT_SYMBOL(drm_display_info_set_bus_formats
);
835 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
836 * @connector: connector to quwery
838 * The kernel supports per-connector configration of its consoles through
839 * use of the video= parameter. This function parses that option and
840 * extracts the user's specified mode (or enable/disable status) for a
841 * particular connector. This is typically only used during the early fbdev
844 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
846 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
849 if (fb_get_options(connector
->name
, &option
))
852 if (!drm_mode_parse_command_line_for_connector(option
,
860 switch (mode
->force
) {
864 case DRM_FORCE_ON_DIGITAL
:
873 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
874 connector
->force
= mode
->force
;
877 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
879 mode
->xres
, mode
->yres
,
880 mode
->refresh_specified
? mode
->refresh
: 60,
881 mode
->rb
? " reduced blanking" : "",
882 mode
->margins
? " with margins" : "",
883 mode
->interlace
? " interlaced" : "");
886 static void drm_connector_free(struct kref
*kref
)
888 struct drm_connector
*connector
=
889 container_of(kref
, struct drm_connector
, base
.refcount
);
890 struct drm_device
*dev
= connector
->dev
;
892 drm_mode_object_unregister(dev
, &connector
->base
);
893 connector
->funcs
->destroy(connector
);
897 * drm_connector_init - Init a preallocated connector
899 * @connector: the connector to init
900 * @funcs: callbacks for this connector
901 * @connector_type: user visible type of the connector
903 * Initialises a preallocated connector. Connectors should be
904 * subclassed as part of driver connector objects.
907 * Zero on success, error code on failure.
909 int drm_connector_init(struct drm_device
*dev
,
910 struct drm_connector
*connector
,
911 const struct drm_connector_funcs
*funcs
,
914 struct drm_mode_config
*config
= &dev
->mode_config
;
916 struct ida
*connector_ida
=
917 &drm_connector_enum_list
[connector_type
].ida
;
919 drm_modeset_lock_all(dev
);
921 ret
= drm_mode_object_get_reg(dev
, &connector
->base
,
922 DRM_MODE_OBJECT_CONNECTOR
,
923 false, drm_connector_free
);
927 connector
->base
.properties
= &connector
->properties
;
928 connector
->dev
= dev
;
929 connector
->funcs
= funcs
;
931 ret
= ida_simple_get(&config
->connector_ida
, 0, 0, GFP_KERNEL
);
934 connector
->index
= ret
;
937 connector
->connector_type
= connector_type
;
938 connector
->connector_type_id
=
939 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
940 if (connector
->connector_type_id
< 0) {
941 ret
= connector
->connector_type_id
;
945 kasprintf(GFP_KERNEL
, "%s-%d",
946 drm_connector_enum_list
[connector_type
].name
,
947 connector
->connector_type_id
);
948 if (!connector
->name
) {
950 goto out_put_type_id
;
953 INIT_LIST_HEAD(&connector
->probed_modes
);
954 INIT_LIST_HEAD(&connector
->modes
);
955 connector
->edid_blob_ptr
= NULL
;
956 connector
->status
= connector_status_unknown
;
958 drm_connector_get_cmdline_mode(connector
);
960 /* We should add connectors at the end to avoid upsetting the connector
962 list_add_tail(&connector
->head
, &config
->connector_list
);
963 config
->num_connector
++;
965 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
966 drm_object_attach_property(&connector
->base
,
967 config
->edid_property
,
970 drm_object_attach_property(&connector
->base
,
971 config
->dpms_property
, 0);
973 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
974 drm_object_attach_property(&connector
->base
, config
->prop_crtc_id
, 0);
977 connector
->debugfs_entry
= NULL
;
980 ida_remove(connector_ida
, connector
->connector_type_id
);
983 ida_remove(&config
->connector_ida
, connector
->index
);
986 drm_mode_object_unregister(dev
, &connector
->base
);
989 drm_modeset_unlock_all(dev
);
993 EXPORT_SYMBOL(drm_connector_init
);
996 * drm_connector_cleanup - cleans up an initialised connector
997 * @connector: connector to cleanup
999 * Cleans up the connector but doesn't free the object.
1001 void drm_connector_cleanup(struct drm_connector
*connector
)
1003 struct drm_device
*dev
= connector
->dev
;
1004 struct drm_display_mode
*mode
, *t
;
1006 /* The connector should have been removed from userspace long before
1007 * it is finally destroyed.
1009 if (WARN_ON(connector
->registered
))
1010 drm_connector_unregister(connector
);
1012 if (connector
->tile_group
) {
1013 drm_mode_put_tile_group(dev
, connector
->tile_group
);
1014 connector
->tile_group
= NULL
;
1017 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
1018 drm_mode_remove(connector
, mode
);
1020 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
1021 drm_mode_remove(connector
, mode
);
1023 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
1024 connector
->connector_type_id
);
1026 ida_remove(&dev
->mode_config
.connector_ida
,
1029 kfree(connector
->display_info
.bus_formats
);
1030 drm_mode_object_unregister(dev
, &connector
->base
);
1031 kfree(connector
->name
);
1032 connector
->name
= NULL
;
1033 list_del(&connector
->head
);
1034 dev
->mode_config
.num_connector
--;
1036 WARN_ON(connector
->state
&& !connector
->funcs
->atomic_destroy_state
);
1037 if (connector
->state
&& connector
->funcs
->atomic_destroy_state
)
1038 connector
->funcs
->atomic_destroy_state(connector
,
1041 memset(connector
, 0, sizeof(*connector
));
1043 EXPORT_SYMBOL(drm_connector_cleanup
);
1046 * drm_connector_register - register a connector
1047 * @connector: the connector to register
1049 * Register userspace interfaces for a connector
1052 * Zero on success, error code on failure.
1054 int drm_connector_register(struct drm_connector
*connector
)
1058 if (connector
->registered
)
1061 ret
= drm_sysfs_connector_add(connector
);
1065 ret
= drm_debugfs_connector_add(connector
);
1070 if (connector
->funcs
->late_register
) {
1071 ret
= connector
->funcs
->late_register(connector
);
1076 drm_mode_object_register(connector
->dev
, &connector
->base
);
1078 connector
->registered
= true;
1082 drm_debugfs_connector_remove(connector
);
1084 drm_sysfs_connector_remove(connector
);
1087 EXPORT_SYMBOL(drm_connector_register
);
1090 * drm_connector_unregister - unregister a connector
1091 * @connector: the connector to unregister
1093 * Unregister userspace interfaces for a connector
1095 void drm_connector_unregister(struct drm_connector
*connector
)
1097 if (!connector
->registered
)
1100 if (connector
->funcs
->early_unregister
)
1101 connector
->funcs
->early_unregister(connector
);
1103 drm_sysfs_connector_remove(connector
);
1104 drm_debugfs_connector_remove(connector
);
1106 connector
->registered
= false;
1108 EXPORT_SYMBOL(drm_connector_unregister
);
1110 static void drm_connector_unregister_all(struct drm_device
*dev
)
1112 struct drm_connector
*connector
;
1114 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1115 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1116 drm_connector_unregister(connector
);
1119 static int drm_connector_register_all(struct drm_device
*dev
)
1121 struct drm_connector
*connector
;
1124 /* FIXME: taking the mode config mutex ends up in a clash with
1125 * fbcon/backlight registration */
1126 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
1127 ret
= drm_connector_register(connector
);
1135 mutex_unlock(&dev
->mode_config
.mutex
);
1136 drm_connector_unregister_all(dev
);
1140 static int drm_encoder_register_all(struct drm_device
*dev
)
1142 struct drm_encoder
*encoder
;
1145 drm_for_each_encoder(encoder
, dev
) {
1146 if (encoder
->funcs
->late_register
)
1147 ret
= encoder
->funcs
->late_register(encoder
);
1155 static void drm_encoder_unregister_all(struct drm_device
*dev
)
1157 struct drm_encoder
*encoder
;
1159 drm_for_each_encoder(encoder
, dev
) {
1160 if (encoder
->funcs
->early_unregister
)
1161 encoder
->funcs
->early_unregister(encoder
);
1166 * drm_encoder_init - Init a preallocated encoder
1168 * @encoder: the encoder to init
1169 * @funcs: callbacks for this encoder
1170 * @encoder_type: user visible type of the encoder
1171 * @name: printf style format string for the encoder name, or NULL for default name
1173 * Initialises a preallocated encoder. Encoder should be
1174 * subclassed as part of driver encoder objects.
1177 * Zero on success, error code on failure.
1179 int drm_encoder_init(struct drm_device
*dev
,
1180 struct drm_encoder
*encoder
,
1181 const struct drm_encoder_funcs
*funcs
,
1182 int encoder_type
, const char *name
, ...)
1186 drm_modeset_lock_all(dev
);
1188 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1193 encoder
->encoder_type
= encoder_type
;
1194 encoder
->funcs
= funcs
;
1199 encoder
->name
= kvasprintf(GFP_KERNEL
, name
, ap
);
1202 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1203 drm_encoder_enum_list
[encoder_type
].name
,
1206 if (!encoder
->name
) {
1211 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1212 encoder
->index
= dev
->mode_config
.num_encoder
++;
1216 drm_mode_object_unregister(dev
, &encoder
->base
);
1219 drm_modeset_unlock_all(dev
);
1223 EXPORT_SYMBOL(drm_encoder_init
);
1226 * drm_encoder_cleanup - cleans up an initialised encoder
1227 * @encoder: encoder to cleanup
1229 * Cleans up the encoder but doesn't free the object.
1231 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1233 struct drm_device
*dev
= encoder
->dev
;
1235 /* Note that the encoder_list is considered to be static; should we
1236 * remove the drm_encoder at runtime we would have to decrement all
1237 * the indices on the drm_encoder after us in the encoder_list.
1240 drm_modeset_lock_all(dev
);
1241 drm_mode_object_unregister(dev
, &encoder
->base
);
1242 kfree(encoder
->name
);
1243 list_del(&encoder
->head
);
1244 dev
->mode_config
.num_encoder
--;
1245 drm_modeset_unlock_all(dev
);
1247 memset(encoder
, 0, sizeof(*encoder
));
1249 EXPORT_SYMBOL(drm_encoder_cleanup
);
1251 static unsigned int drm_num_planes(struct drm_device
*dev
)
1253 unsigned int num
= 0;
1254 struct drm_plane
*tmp
;
1256 drm_for_each_plane(tmp
, dev
) {
1264 * drm_universal_plane_init - Initialize a new universal plane object
1266 * @plane: plane object to init
1267 * @possible_crtcs: bitmask of possible CRTCs
1268 * @funcs: callbacks for the new plane
1269 * @formats: array of supported formats (%DRM_FORMAT_*)
1270 * @format_count: number of elements in @formats
1271 * @type: type of plane (overlay, primary, cursor)
1272 * @name: printf style format string for the plane name, or NULL for default name
1274 * Initializes a plane object of type @type.
1277 * Zero on success, error code on failure.
1279 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1280 unsigned long possible_crtcs
,
1281 const struct drm_plane_funcs
*funcs
,
1282 const uint32_t *formats
, unsigned int format_count
,
1283 enum drm_plane_type type
,
1284 const char *name
, ...)
1286 struct drm_mode_config
*config
= &dev
->mode_config
;
1289 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1293 drm_modeset_lock_init(&plane
->mutex
);
1295 plane
->base
.properties
= &plane
->properties
;
1297 plane
->funcs
= funcs
;
1298 plane
->format_types
= kmalloc_array(format_count
, sizeof(uint32_t),
1300 if (!plane
->format_types
) {
1301 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1302 drm_mode_object_unregister(dev
, &plane
->base
);
1310 plane
->name
= kvasprintf(GFP_KERNEL
, name
, ap
);
1313 plane
->name
= kasprintf(GFP_KERNEL
, "plane-%d",
1314 drm_num_planes(dev
));
1317 kfree(plane
->format_types
);
1318 drm_mode_object_unregister(dev
, &plane
->base
);
1322 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1323 plane
->format_count
= format_count
;
1324 plane
->possible_crtcs
= possible_crtcs
;
1327 list_add_tail(&plane
->head
, &config
->plane_list
);
1328 plane
->index
= config
->num_total_plane
++;
1329 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1330 config
->num_overlay_plane
++;
1332 drm_object_attach_property(&plane
->base
,
1333 config
->plane_type_property
,
1336 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
1337 drm_object_attach_property(&plane
->base
, config
->prop_fb_id
, 0);
1338 drm_object_attach_property(&plane
->base
, config
->prop_crtc_id
, 0);
1339 drm_object_attach_property(&plane
->base
, config
->prop_crtc_x
, 0);
1340 drm_object_attach_property(&plane
->base
, config
->prop_crtc_y
, 0);
1341 drm_object_attach_property(&plane
->base
, config
->prop_crtc_w
, 0);
1342 drm_object_attach_property(&plane
->base
, config
->prop_crtc_h
, 0);
1343 drm_object_attach_property(&plane
->base
, config
->prop_src_x
, 0);
1344 drm_object_attach_property(&plane
->base
, config
->prop_src_y
, 0);
1345 drm_object_attach_property(&plane
->base
, config
->prop_src_w
, 0);
1346 drm_object_attach_property(&plane
->base
, config
->prop_src_h
, 0);
1351 EXPORT_SYMBOL(drm_universal_plane_init
);
1353 static int drm_plane_register_all(struct drm_device
*dev
)
1355 struct drm_plane
*plane
;
1358 drm_for_each_plane(plane
, dev
) {
1359 if (plane
->funcs
->late_register
)
1360 ret
= plane
->funcs
->late_register(plane
);
1368 static void drm_plane_unregister_all(struct drm_device
*dev
)
1370 struct drm_plane
*plane
;
1372 drm_for_each_plane(plane
, dev
) {
1373 if (plane
->funcs
->early_unregister
)
1374 plane
->funcs
->early_unregister(plane
);
1379 * drm_plane_init - Initialize a legacy plane
1381 * @plane: plane object to init
1382 * @possible_crtcs: bitmask of possible CRTCs
1383 * @funcs: callbacks for the new plane
1384 * @formats: array of supported formats (%DRM_FORMAT_*)
1385 * @format_count: number of elements in @formats
1386 * @is_primary: plane type (primary vs overlay)
1388 * Legacy API to initialize a DRM plane.
1390 * New drivers should call drm_universal_plane_init() instead.
1393 * Zero on success, error code on failure.
1395 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1396 unsigned long possible_crtcs
,
1397 const struct drm_plane_funcs
*funcs
,
1398 const uint32_t *formats
, unsigned int format_count
,
1401 enum drm_plane_type type
;
1403 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1404 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1405 formats
, format_count
, type
, NULL
);
1407 EXPORT_SYMBOL(drm_plane_init
);
1410 * drm_plane_cleanup - Clean up the core plane usage
1411 * @plane: plane to cleanup
1413 * This function cleans up @plane and removes it from the DRM mode setting
1414 * core. Note that the function does *not* free the plane structure itself,
1415 * this is the responsibility of the caller.
1417 void drm_plane_cleanup(struct drm_plane
*plane
)
1419 struct drm_device
*dev
= plane
->dev
;
1421 drm_modeset_lock_all(dev
);
1422 kfree(plane
->format_types
);
1423 drm_mode_object_unregister(dev
, &plane
->base
);
1425 BUG_ON(list_empty(&plane
->head
));
1427 /* Note that the plane_list is considered to be static; should we
1428 * remove the drm_plane at runtime we would have to decrement all
1429 * the indices on the drm_plane after us in the plane_list.
1432 list_del(&plane
->head
);
1433 dev
->mode_config
.num_total_plane
--;
1434 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1435 dev
->mode_config
.num_overlay_plane
--;
1436 drm_modeset_unlock_all(dev
);
1438 WARN_ON(plane
->state
&& !plane
->funcs
->atomic_destroy_state
);
1439 if (plane
->state
&& plane
->funcs
->atomic_destroy_state
)
1440 plane
->funcs
->atomic_destroy_state(plane
, plane
->state
);
1444 memset(plane
, 0, sizeof(*plane
));
1446 EXPORT_SYMBOL(drm_plane_cleanup
);
1449 * drm_plane_from_index - find the registered plane at an index
1451 * @idx: index of registered plane to find for
1453 * Given a plane index, return the registered plane from DRM device's
1454 * list of planes with matching index.
1457 drm_plane_from_index(struct drm_device
*dev
, int idx
)
1459 struct drm_plane
*plane
;
1461 drm_for_each_plane(plane
, dev
)
1462 if (idx
== plane
->index
)
1467 EXPORT_SYMBOL(drm_plane_from_index
);
1470 * drm_plane_force_disable - Forcibly disable a plane
1471 * @plane: plane to disable
1473 * Forces the plane to be disabled.
1475 * Used when the plane's current framebuffer is destroyed,
1476 * and when restoring fbdev mode.
1478 void drm_plane_force_disable(struct drm_plane
*plane
)
1485 plane
->old_fb
= plane
->fb
;
1486 ret
= plane
->funcs
->disable_plane(plane
);
1488 DRM_ERROR("failed to disable plane with busy fb\n");
1489 plane
->old_fb
= NULL
;
1492 /* disconnect the plane from the fb and crtc: */
1493 drm_framebuffer_unreference(plane
->old_fb
);
1494 plane
->old_fb
= NULL
;
1498 EXPORT_SYMBOL(drm_plane_force_disable
);
1500 int drm_modeset_register_all(struct drm_device
*dev
)
1504 ret
= drm_plane_register_all(dev
);
1508 ret
= drm_crtc_register_all(dev
);
1512 ret
= drm_encoder_register_all(dev
);
1516 ret
= drm_connector_register_all(dev
);
1523 drm_encoder_unregister_all(dev
);
1525 drm_crtc_unregister_all(dev
);
1527 drm_plane_unregister_all(dev
);
1532 void drm_modeset_unregister_all(struct drm_device
*dev
)
1534 drm_connector_unregister_all(dev
);
1535 drm_encoder_unregister_all(dev
);
1536 drm_crtc_unregister_all(dev
);
1537 drm_plane_unregister_all(dev
);
1540 static int drm_mode_create_standard_properties(struct drm_device
*dev
)
1542 struct drm_property
*prop
;
1545 * Standard properties (apply to all connectors)
1547 prop
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1548 DRM_MODE_PROP_IMMUTABLE
,
1552 dev
->mode_config
.edid_property
= prop
;
1554 prop
= drm_property_create_enum(dev
, 0,
1555 "DPMS", drm_dpms_enum_list
,
1556 ARRAY_SIZE(drm_dpms_enum_list
));
1559 dev
->mode_config
.dpms_property
= prop
;
1561 prop
= drm_property_create(dev
,
1562 DRM_MODE_PROP_BLOB
|
1563 DRM_MODE_PROP_IMMUTABLE
,
1567 dev
->mode_config
.path_property
= prop
;
1569 prop
= drm_property_create(dev
,
1570 DRM_MODE_PROP_BLOB
|
1571 DRM_MODE_PROP_IMMUTABLE
,
1575 dev
->mode_config
.tile_property
= prop
;
1577 prop
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1578 "type", drm_plane_type_enum_list
,
1579 ARRAY_SIZE(drm_plane_type_enum_list
));
1582 dev
->mode_config
.plane_type_property
= prop
;
1584 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1585 "SRC_X", 0, UINT_MAX
);
1588 dev
->mode_config
.prop_src_x
= prop
;
1590 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1591 "SRC_Y", 0, UINT_MAX
);
1594 dev
->mode_config
.prop_src_y
= prop
;
1596 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1597 "SRC_W", 0, UINT_MAX
);
1600 dev
->mode_config
.prop_src_w
= prop
;
1602 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1603 "SRC_H", 0, UINT_MAX
);
1606 dev
->mode_config
.prop_src_h
= prop
;
1608 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1609 "CRTC_X", INT_MIN
, INT_MAX
);
1612 dev
->mode_config
.prop_crtc_x
= prop
;
1614 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1615 "CRTC_Y", INT_MIN
, INT_MAX
);
1618 dev
->mode_config
.prop_crtc_y
= prop
;
1620 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1621 "CRTC_W", 0, INT_MAX
);
1624 dev
->mode_config
.prop_crtc_w
= prop
;
1626 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1627 "CRTC_H", 0, INT_MAX
);
1630 dev
->mode_config
.prop_crtc_h
= prop
;
1632 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1633 "FB_ID", DRM_MODE_OBJECT_FB
);
1636 dev
->mode_config
.prop_fb_id
= prop
;
1638 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1639 "CRTC_ID", DRM_MODE_OBJECT_CRTC
);
1642 dev
->mode_config
.prop_crtc_id
= prop
;
1644 prop
= drm_property_create_bool(dev
, DRM_MODE_PROP_ATOMIC
,
1648 dev
->mode_config
.prop_active
= prop
;
1650 prop
= drm_property_create(dev
,
1651 DRM_MODE_PROP_ATOMIC
| DRM_MODE_PROP_BLOB
,
1655 dev
->mode_config
.prop_mode_id
= prop
;
1657 prop
= drm_property_create(dev
,
1662 dev
->mode_config
.degamma_lut_property
= prop
;
1664 prop
= drm_property_create_range(dev
,
1665 DRM_MODE_PROP_IMMUTABLE
,
1666 "DEGAMMA_LUT_SIZE", 0, UINT_MAX
);
1669 dev
->mode_config
.degamma_lut_size_property
= prop
;
1671 prop
= drm_property_create(dev
,
1676 dev
->mode_config
.ctm_property
= prop
;
1678 prop
= drm_property_create(dev
,
1683 dev
->mode_config
.gamma_lut_property
= prop
;
1685 prop
= drm_property_create_range(dev
,
1686 DRM_MODE_PROP_IMMUTABLE
,
1687 "GAMMA_LUT_SIZE", 0, UINT_MAX
);
1690 dev
->mode_config
.gamma_lut_size_property
= prop
;
1696 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1699 * Called by a driver the first time a DVI-I connector is made.
1701 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1703 struct drm_property
*dvi_i_selector
;
1704 struct drm_property
*dvi_i_subconnector
;
1706 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1710 drm_property_create_enum(dev
, 0,
1711 "select subconnector",
1712 drm_dvi_i_select_enum_list
,
1713 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1714 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1716 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1718 drm_dvi_i_subconnector_enum_list
,
1719 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1720 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1724 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1727 * drm_create_tv_properties - create TV specific connector properties
1729 * @num_modes: number of different TV formats (modes) supported
1730 * @modes: array of pointers to strings containing name of each format
1732 * Called by a driver's TV initialization routine, this function creates
1733 * the TV specific connector properties for a given device. Caller is
1734 * responsible for allocating a list of format names and passing them to
1737 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1738 unsigned int num_modes
,
1739 const char * const modes
[])
1741 struct drm_property
*tv_selector
;
1742 struct drm_property
*tv_subconnector
;
1745 if (dev
->mode_config
.tv_select_subconnector_property
)
1749 * Basic connector properties
1751 tv_selector
= drm_property_create_enum(dev
, 0,
1752 "select subconnector",
1753 drm_tv_select_enum_list
,
1754 ARRAY_SIZE(drm_tv_select_enum_list
));
1758 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1761 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1763 drm_tv_subconnector_enum_list
,
1764 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1765 if (!tv_subconnector
)
1767 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1770 * Other, TV specific properties: margins & TV modes.
1772 dev
->mode_config
.tv_left_margin_property
=
1773 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1774 if (!dev
->mode_config
.tv_left_margin_property
)
1777 dev
->mode_config
.tv_right_margin_property
=
1778 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1779 if (!dev
->mode_config
.tv_right_margin_property
)
1782 dev
->mode_config
.tv_top_margin_property
=
1783 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1784 if (!dev
->mode_config
.tv_top_margin_property
)
1787 dev
->mode_config
.tv_bottom_margin_property
=
1788 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1789 if (!dev
->mode_config
.tv_bottom_margin_property
)
1792 dev
->mode_config
.tv_mode_property
=
1793 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1795 if (!dev
->mode_config
.tv_mode_property
)
1798 for (i
= 0; i
< num_modes
; i
++)
1799 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1802 dev
->mode_config
.tv_brightness_property
=
1803 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1804 if (!dev
->mode_config
.tv_brightness_property
)
1807 dev
->mode_config
.tv_contrast_property
=
1808 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1809 if (!dev
->mode_config
.tv_contrast_property
)
1812 dev
->mode_config
.tv_flicker_reduction_property
=
1813 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1814 if (!dev
->mode_config
.tv_flicker_reduction_property
)
1817 dev
->mode_config
.tv_overscan_property
=
1818 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1819 if (!dev
->mode_config
.tv_overscan_property
)
1822 dev
->mode_config
.tv_saturation_property
=
1823 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1824 if (!dev
->mode_config
.tv_saturation_property
)
1827 dev
->mode_config
.tv_hue_property
=
1828 drm_property_create_range(dev
, 0, "hue", 0, 100);
1829 if (!dev
->mode_config
.tv_hue_property
)
1836 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1839 * drm_mode_create_scaling_mode_property - create scaling mode property
1842 * Called by a driver the first time it's needed, must be attached to desired
1845 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1847 struct drm_property
*scaling_mode
;
1849 if (dev
->mode_config
.scaling_mode_property
)
1853 drm_property_create_enum(dev
, 0, "scaling mode",
1854 drm_scaling_mode_enum_list
,
1855 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1857 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1861 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1864 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1867 * Called by a driver the first time it's needed, must be attached to desired
1871 * Zero on success, negative errno on failure.
1873 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1875 if (dev
->mode_config
.aspect_ratio_property
)
1878 dev
->mode_config
.aspect_ratio_property
=
1879 drm_property_create_enum(dev
, 0, "aspect ratio",
1880 drm_aspect_ratio_enum_list
,
1881 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1883 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1888 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1891 * drm_mode_create_dirty_property - create dirty property
1894 * Called by a driver the first time it's needed, must be attached to desired
1897 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1899 struct drm_property
*dirty_info
;
1901 if (dev
->mode_config
.dirty_info_property
)
1905 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1907 drm_dirty_info_enum_list
,
1908 ARRAY_SIZE(drm_dirty_info_enum_list
));
1909 dev
->mode_config
.dirty_info_property
= dirty_info
;
1913 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1916 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1919 * Create the the suggested x/y offset property for connectors.
1921 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1923 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1926 dev
->mode_config
.suggested_x_property
=
1927 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1929 dev
->mode_config
.suggested_y_property
=
1930 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1932 if (dev
->mode_config
.suggested_x_property
== NULL
||
1933 dev
->mode_config
.suggested_y_property
== NULL
)
1937 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1940 * drm_mode_getresources - get graphics configuration
1941 * @dev: drm device for the ioctl
1942 * @data: data pointer for the ioctl
1943 * @file_priv: drm file for the ioctl call
1945 * Construct a set of configuration description structures and return
1946 * them to the user, including CRTC, connector and framebuffer configuration.
1948 * Called by the user via ioctl.
1951 * Zero on success, negative errno on failure.
1953 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1954 struct drm_file
*file_priv
)
1956 struct drm_mode_card_res
*card_res
= data
;
1957 struct list_head
*lh
;
1958 struct drm_framebuffer
*fb
;
1959 struct drm_connector
*connector
;
1960 struct drm_crtc
*crtc
;
1961 struct drm_encoder
*encoder
;
1963 int connector_count
= 0;
1966 int encoder_count
= 0;
1968 uint32_t __user
*fb_id
;
1969 uint32_t __user
*crtc_id
;
1970 uint32_t __user
*connector_id
;
1971 uint32_t __user
*encoder_id
;
1973 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1977 mutex_lock(&file_priv
->fbs_lock
);
1979 * For the non-control nodes we need to limit the list of resources
1980 * by IDs in the group list for this node
1982 list_for_each(lh
, &file_priv
->fbs
)
1985 /* handle this in 4 parts */
1987 if (card_res
->count_fbs
>= fb_count
) {
1989 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1990 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1991 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1992 mutex_unlock(&file_priv
->fbs_lock
);
1998 card_res
->count_fbs
= fb_count
;
1999 mutex_unlock(&file_priv
->fbs_lock
);
2001 /* mode_config.mutex protects the connector list against e.g. DP MST
2002 * connector hot-adding. CRTC/Plane lists are invariant. */
2003 mutex_lock(&dev
->mode_config
.mutex
);
2004 drm_for_each_crtc(crtc
, dev
)
2007 drm_for_each_connector(connector
, dev
)
2010 drm_for_each_encoder(encoder
, dev
)
2013 card_res
->max_height
= dev
->mode_config
.max_height
;
2014 card_res
->min_height
= dev
->mode_config
.min_height
;
2015 card_res
->max_width
= dev
->mode_config
.max_width
;
2016 card_res
->min_width
= dev
->mode_config
.min_width
;
2019 if (card_res
->count_crtcs
>= crtc_count
) {
2021 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
2022 drm_for_each_crtc(crtc
, dev
) {
2023 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
2030 card_res
->count_crtcs
= crtc_count
;
2033 if (card_res
->count_encoders
>= encoder_count
) {
2035 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
2036 drm_for_each_encoder(encoder
, dev
) {
2037 if (put_user(encoder
->base
.id
, encoder_id
+
2045 card_res
->count_encoders
= encoder_count
;
2048 if (card_res
->count_connectors
>= connector_count
) {
2050 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
2051 drm_for_each_connector(connector
, dev
) {
2052 if (put_user(connector
->base
.id
,
2053 connector_id
+ copied
)) {
2060 card_res
->count_connectors
= connector_count
;
2063 mutex_unlock(&dev
->mode_config
.mutex
);
2068 * drm_mode_getcrtc - get CRTC configuration
2069 * @dev: drm device for the ioctl
2070 * @data: data pointer for the ioctl
2071 * @file_priv: drm file for the ioctl call
2073 * Construct a CRTC configuration structure to return to the user.
2075 * Called by the user via ioctl.
2078 * Zero on success, negative errno on failure.
2080 int drm_mode_getcrtc(struct drm_device
*dev
,
2081 void *data
, struct drm_file
*file_priv
)
2083 struct drm_mode_crtc
*crtc_resp
= data
;
2084 struct drm_crtc
*crtc
;
2086 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2089 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
2093 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
2094 crtc_resp
->gamma_size
= crtc
->gamma_size
;
2095 if (crtc
->primary
->fb
)
2096 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
2098 crtc_resp
->fb_id
= 0;
2101 crtc_resp
->x
= crtc
->primary
->state
->src_x
>> 16;
2102 crtc_resp
->y
= crtc
->primary
->state
->src_y
>> 16;
2103 if (crtc
->state
->enable
) {
2104 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->state
->mode
);
2105 crtc_resp
->mode_valid
= 1;
2108 crtc_resp
->mode_valid
= 0;
2111 crtc_resp
->x
= crtc
->x
;
2112 crtc_resp
->y
= crtc
->y
;
2113 if (crtc
->enabled
) {
2114 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
2115 crtc_resp
->mode_valid
= 1;
2118 crtc_resp
->mode_valid
= 0;
2121 drm_modeset_unlock_crtc(crtc
);
2126 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
2127 const struct drm_file
*file_priv
)
2130 * If user-space hasn't configured the driver to expose the stereo 3D
2131 * modes, don't expose them.
2133 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
2139 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
2141 /* For atomic drivers only state objects are synchronously updated and
2142 * protected by modeset locks, so check those first. */
2143 if (connector
->state
)
2144 return connector
->state
->best_encoder
;
2145 return connector
->encoder
;
2148 /* helper for getconnector and getproperties ioctls */
2149 static int get_properties(struct drm_mode_object
*obj
, bool atomic
,
2150 uint32_t __user
*prop_ptr
, uint64_t __user
*prop_values
,
2151 uint32_t *arg_count_props
)
2156 props_count
= obj
->properties
->count
;
2158 props_count
-= obj
->properties
->atomic_count
;
2160 if ((*arg_count_props
>= props_count
) && props_count
) {
2161 for (i
= 0, copied
= 0; copied
< props_count
; i
++) {
2162 struct drm_property
*prop
= obj
->properties
->properties
[i
];
2165 if ((prop
->flags
& DRM_MODE_PROP_ATOMIC
) && !atomic
)
2168 ret
= drm_object_property_get_value(obj
, prop
, &val
);
2172 if (put_user(prop
->base
.id
, prop_ptr
+ copied
))
2175 if (put_user(val
, prop_values
+ copied
))
2181 *arg_count_props
= props_count
;
2187 * drm_mode_getconnector - get connector configuration
2188 * @dev: drm device for the ioctl
2189 * @data: data pointer for the ioctl
2190 * @file_priv: drm file for the ioctl call
2192 * Construct a connector configuration structure to return to the user.
2194 * Called by the user via ioctl.
2197 * Zero on success, negative errno on failure.
2199 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
2200 struct drm_file
*file_priv
)
2202 struct drm_mode_get_connector
*out_resp
= data
;
2203 struct drm_connector
*connector
;
2204 struct drm_encoder
*encoder
;
2205 struct drm_display_mode
*mode
;
2207 int encoders_count
= 0;
2211 struct drm_mode_modeinfo u_mode
;
2212 struct drm_mode_modeinfo __user
*mode_ptr
;
2213 uint32_t __user
*encoder_ptr
;
2215 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2218 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
2220 mutex_lock(&dev
->mode_config
.mutex
);
2222 connector
= drm_connector_lookup(dev
, out_resp
->connector_id
);
2228 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++)
2229 if (connector
->encoder_ids
[i
] != 0)
2232 if (out_resp
->count_modes
== 0) {
2233 connector
->funcs
->fill_modes(connector
,
2234 dev
->mode_config
.max_width
,
2235 dev
->mode_config
.max_height
);
2238 /* delayed so we get modes regardless of pre-fill_modes state */
2239 list_for_each_entry(mode
, &connector
->modes
, head
)
2240 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2243 out_resp
->connector_id
= connector
->base
.id
;
2244 out_resp
->connector_type
= connector
->connector_type
;
2245 out_resp
->connector_type_id
= connector
->connector_type_id
;
2246 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2247 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2248 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2249 out_resp
->connection
= connector
->status
;
2251 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2252 encoder
= drm_connector_get_encoder(connector
);
2254 out_resp
->encoder_id
= encoder
->base
.id
;
2256 out_resp
->encoder_id
= 0;
2259 * This ioctl is called twice, once to determine how much space is
2260 * needed, and the 2nd time to fill it.
2262 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2264 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2265 list_for_each_entry(mode
, &connector
->modes
, head
) {
2266 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2269 drm_mode_convert_to_umode(&u_mode
, mode
);
2270 if (copy_to_user(mode_ptr
+ copied
,
2271 &u_mode
, sizeof(u_mode
))) {
2278 out_resp
->count_modes
= mode_count
;
2280 ret
= get_properties(&connector
->base
, file_priv
->atomic
,
2281 (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
),
2282 (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
),
2283 &out_resp
->count_props
);
2287 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2289 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2290 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2291 if (connector
->encoder_ids
[i
] != 0) {
2292 if (put_user(connector
->encoder_ids
[i
],
2293 encoder_ptr
+ copied
)) {
2301 out_resp
->count_encoders
= encoders_count
;
2304 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2306 drm_connector_unreference(connector
);
2308 mutex_unlock(&dev
->mode_config
.mutex
);
2313 static struct drm_crtc
*drm_encoder_get_crtc(struct drm_encoder
*encoder
)
2315 struct drm_connector
*connector
;
2316 struct drm_device
*dev
= encoder
->dev
;
2317 bool uses_atomic
= false;
2319 /* For atomic drivers only state objects are synchronously updated and
2320 * protected by modeset locks, so check those first. */
2321 drm_for_each_connector(connector
, dev
) {
2322 if (!connector
->state
)
2327 if (connector
->state
->best_encoder
!= encoder
)
2330 return connector
->state
->crtc
;
2333 /* Don't return stale data (e.g. pending async disable). */
2337 return encoder
->crtc
;
2341 * drm_mode_getencoder - get encoder configuration
2342 * @dev: drm device for the ioctl
2343 * @data: data pointer for the ioctl
2344 * @file_priv: drm file for the ioctl call
2346 * Construct a encoder configuration structure to return to the user.
2348 * Called by the user via ioctl.
2351 * Zero on success, negative errno on failure.
2353 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2354 struct drm_file
*file_priv
)
2356 struct drm_mode_get_encoder
*enc_resp
= data
;
2357 struct drm_encoder
*encoder
;
2358 struct drm_crtc
*crtc
;
2360 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2363 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2367 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2368 crtc
= drm_encoder_get_crtc(encoder
);
2370 enc_resp
->crtc_id
= crtc
->base
.id
;
2372 enc_resp
->crtc_id
= 0;
2373 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2375 enc_resp
->encoder_type
= encoder
->encoder_type
;
2376 enc_resp
->encoder_id
= encoder
->base
.id
;
2377 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2378 enc_resp
->possible_clones
= encoder
->possible_clones
;
2384 * drm_mode_getplane_res - enumerate all plane resources
2387 * @file_priv: DRM file info
2389 * Construct a list of plane ids to return to the user.
2391 * Called by the user via ioctl.
2394 * Zero on success, negative errno on failure.
2396 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2397 struct drm_file
*file_priv
)
2399 struct drm_mode_get_plane_res
*plane_resp
= data
;
2400 struct drm_mode_config
*config
;
2401 struct drm_plane
*plane
;
2402 uint32_t __user
*plane_ptr
;
2404 unsigned num_planes
;
2406 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2409 config
= &dev
->mode_config
;
2411 if (file_priv
->universal_planes
)
2412 num_planes
= config
->num_total_plane
;
2414 num_planes
= config
->num_overlay_plane
;
2417 * This ioctl is called twice, once to determine how much space is
2418 * needed, and the 2nd time to fill it.
2421 (plane_resp
->count_planes
>= num_planes
)) {
2422 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2424 /* Plane lists are invariant, no locking needed. */
2425 drm_for_each_plane(plane
, dev
) {
2427 * Unless userspace set the 'universal planes'
2428 * capability bit, only advertise overlays.
2430 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2431 !file_priv
->universal_planes
)
2434 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2439 plane_resp
->count_planes
= num_planes
;
2445 * drm_mode_getplane - get plane configuration
2448 * @file_priv: DRM file info
2450 * Construct a plane configuration structure to return to the user.
2452 * Called by the user via ioctl.
2455 * Zero on success, negative errno on failure.
2457 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2458 struct drm_file
*file_priv
)
2460 struct drm_mode_get_plane
*plane_resp
= data
;
2461 struct drm_plane
*plane
;
2462 uint32_t __user
*format_ptr
;
2464 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2467 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2471 drm_modeset_lock(&plane
->mutex
, NULL
);
2473 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2475 plane_resp
->crtc_id
= 0;
2478 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2480 plane_resp
->fb_id
= 0;
2481 drm_modeset_unlock(&plane
->mutex
);
2483 plane_resp
->plane_id
= plane
->base
.id
;
2484 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2485 plane_resp
->gamma_size
= 0;
2488 * This ioctl is called twice, once to determine how much space is
2489 * needed, and the 2nd time to fill it.
2491 if (plane
->format_count
&&
2492 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2493 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2494 if (copy_to_user(format_ptr
,
2495 plane
->format_types
,
2496 sizeof(uint32_t) * plane
->format_count
)) {
2500 plane_resp
->count_format_types
= plane
->format_count
;
2506 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2507 * @plane: plane to check for format support
2508 * @format: the pixel format
2511 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2514 int drm_plane_check_pixel_format(const struct drm_plane
*plane
, u32 format
)
2518 for (i
= 0; i
< plane
->format_count
; i
++) {
2519 if (format
== plane
->format_types
[i
])
2526 static int check_src_coords(uint32_t src_x
, uint32_t src_y
,
2527 uint32_t src_w
, uint32_t src_h
,
2528 const struct drm_framebuffer
*fb
)
2530 unsigned int fb_width
, fb_height
;
2532 fb_width
= fb
->width
<< 16;
2533 fb_height
= fb
->height
<< 16;
2535 /* Make sure source coordinates are inside the fb. */
2536 if (src_w
> fb_width
||
2537 src_x
> fb_width
- src_w
||
2538 src_h
> fb_height
||
2539 src_y
> fb_height
- src_h
) {
2540 DRM_DEBUG_KMS("Invalid source coordinates "
2541 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2542 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2543 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2544 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2545 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2553 * setplane_internal - setplane handler for internal callers
2555 * Note that we assume an extra reference has already been taken on fb. If the
2556 * update fails, this reference will be dropped before return; if it succeeds,
2557 * the previous framebuffer (if any) will be unreferenced instead.
2559 * src_{x,y,w,h} are provided in 16.16 fixed point format
2561 static int __setplane_internal(struct drm_plane
*plane
,
2562 struct drm_crtc
*crtc
,
2563 struct drm_framebuffer
*fb
,
2564 int32_t crtc_x
, int32_t crtc_y
,
2565 uint32_t crtc_w
, uint32_t crtc_h
,
2566 /* src_{x,y,w,h} values are 16.16 fixed point */
2567 uint32_t src_x
, uint32_t src_y
,
2568 uint32_t src_w
, uint32_t src_h
)
2572 /* No fb means shut it down */
2574 plane
->old_fb
= plane
->fb
;
2575 ret
= plane
->funcs
->disable_plane(plane
);
2580 plane
->old_fb
= NULL
;
2585 /* Check whether this plane is usable on this CRTC */
2586 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2587 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2592 /* Check whether this plane supports the fb pixel format. */
2593 ret
= drm_plane_check_pixel_format(plane
, fb
->pixel_format
);
2595 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2596 drm_get_format_name(fb
->pixel_format
));
2600 /* Give drivers some help against integer overflows */
2601 if (crtc_w
> INT_MAX
||
2602 crtc_x
> INT_MAX
- (int32_t) crtc_w
||
2604 crtc_y
> INT_MAX
- (int32_t) crtc_h
) {
2605 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2606 crtc_w
, crtc_h
, crtc_x
, crtc_y
);
2611 ret
= check_src_coords(src_x
, src_y
, src_w
, src_h
, fb
);
2615 plane
->old_fb
= plane
->fb
;
2616 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2617 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2618 src_x
, src_y
, src_w
, src_h
);
2624 plane
->old_fb
= NULL
;
2629 drm_framebuffer_unreference(fb
);
2631 drm_framebuffer_unreference(plane
->old_fb
);
2632 plane
->old_fb
= NULL
;
2637 static int setplane_internal(struct drm_plane
*plane
,
2638 struct drm_crtc
*crtc
,
2639 struct drm_framebuffer
*fb
,
2640 int32_t crtc_x
, int32_t crtc_y
,
2641 uint32_t crtc_w
, uint32_t crtc_h
,
2642 /* src_{x,y,w,h} values are 16.16 fixed point */
2643 uint32_t src_x
, uint32_t src_y
,
2644 uint32_t src_w
, uint32_t src_h
)
2648 drm_modeset_lock_all(plane
->dev
);
2649 ret
= __setplane_internal(plane
, crtc
, fb
,
2650 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2651 src_x
, src_y
, src_w
, src_h
);
2652 drm_modeset_unlock_all(plane
->dev
);
2658 * drm_mode_setplane - configure a plane's configuration
2660 * @data: ioctl data*
2661 * @file_priv: DRM file info
2663 * Set plane configuration, including placement, fb, scaling, and other factors.
2664 * Or pass a NULL fb to disable (planes may be disabled without providing a
2668 * Zero on success, negative errno on failure.
2670 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2671 struct drm_file
*file_priv
)
2673 struct drm_mode_set_plane
*plane_req
= data
;
2674 struct drm_plane
*plane
;
2675 struct drm_crtc
*crtc
= NULL
;
2676 struct drm_framebuffer
*fb
= NULL
;
2678 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2682 * First, find the plane, crtc, and fb objects. If not available,
2683 * we don't bother to call the driver.
2685 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
2687 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2688 plane_req
->plane_id
);
2692 if (plane_req
->fb_id
) {
2693 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2695 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2700 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
2702 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2703 plane_req
->crtc_id
);
2709 * setplane_internal will take care of deref'ing either the old or new
2710 * framebuffer depending on success.
2712 return setplane_internal(plane
, crtc
, fb
,
2713 plane_req
->crtc_x
, plane_req
->crtc_y
,
2714 plane_req
->crtc_w
, plane_req
->crtc_h
,
2715 plane_req
->src_x
, plane_req
->src_y
,
2716 plane_req
->src_w
, plane_req
->src_h
);
2720 * drm_mode_set_config_internal - helper to call ->set_config
2721 * @set: modeset config to set
2723 * This is a little helper to wrap internal calls to the ->set_config driver
2724 * interface. The only thing it adds is correct refcounting dance.
2727 * Zero on success, negative errno on failure.
2729 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2731 struct drm_crtc
*crtc
= set
->crtc
;
2732 struct drm_framebuffer
*fb
;
2733 struct drm_crtc
*tmp
;
2737 * NOTE: ->set_config can also disable other crtcs (if we steal all
2738 * connectors from it), hence we need to refcount the fbs across all
2739 * crtcs. Atomic modeset will have saner semantics ...
2741 drm_for_each_crtc(tmp
, crtc
->dev
)
2742 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2746 ret
= crtc
->funcs
->set_config(set
);
2748 crtc
->primary
->crtc
= crtc
;
2749 crtc
->primary
->fb
= fb
;
2752 drm_for_each_crtc(tmp
, crtc
->dev
) {
2753 if (tmp
->primary
->fb
)
2754 drm_framebuffer_reference(tmp
->primary
->fb
);
2755 if (tmp
->primary
->old_fb
)
2756 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2757 tmp
->primary
->old_fb
= NULL
;
2762 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2765 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2766 * @mode: mode to query
2767 * @hdisplay: hdisplay value to fill in
2768 * @vdisplay: vdisplay value to fill in
2770 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2771 * the appropriate layout.
2773 void drm_crtc_get_hv_timing(const struct drm_display_mode
*mode
,
2774 int *hdisplay
, int *vdisplay
)
2776 struct drm_display_mode adjusted
;
2778 drm_mode_copy(&adjusted
, mode
);
2779 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE_ONLY
);
2780 *hdisplay
= adjusted
.crtc_hdisplay
;
2781 *vdisplay
= adjusted
.crtc_vdisplay
;
2783 EXPORT_SYMBOL(drm_crtc_get_hv_timing
);
2786 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2788 * @crtc: CRTC that framebuffer will be displayed on
2791 * @mode: mode that framebuffer will be displayed under
2792 * @fb: framebuffer to check size of
2794 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2796 const struct drm_display_mode
*mode
,
2797 const struct drm_framebuffer
*fb
)
2800 int hdisplay
, vdisplay
;
2802 drm_crtc_get_hv_timing(mode
, &hdisplay
, &vdisplay
);
2805 crtc
->primary
->state
->rotation
& (BIT(DRM_ROTATE_90
) |
2806 BIT(DRM_ROTATE_270
)))
2807 swap(hdisplay
, vdisplay
);
2809 return check_src_coords(x
<< 16, y
<< 16,
2810 hdisplay
<< 16, vdisplay
<< 16, fb
);
2812 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2815 * drm_mode_setcrtc - set CRTC configuration
2816 * @dev: drm device for the ioctl
2817 * @data: data pointer for the ioctl
2818 * @file_priv: drm file for the ioctl call
2820 * Build a new CRTC configuration based on user request.
2822 * Called by the user via ioctl.
2825 * Zero on success, negative errno on failure.
2827 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2828 struct drm_file
*file_priv
)
2830 struct drm_mode_config
*config
= &dev
->mode_config
;
2831 struct drm_mode_crtc
*crtc_req
= data
;
2832 struct drm_crtc
*crtc
;
2833 struct drm_connector
**connector_set
= NULL
, *connector
;
2834 struct drm_framebuffer
*fb
= NULL
;
2835 struct drm_display_mode
*mode
= NULL
;
2836 struct drm_mode_set set
;
2837 uint32_t __user
*set_connectors_ptr
;
2841 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2845 * Universal plane src offsets are only 16.16, prevent havoc for
2846 * drivers using universal plane code internally.
2848 if (crtc_req
->x
& 0xffff0000 || crtc_req
->y
& 0xffff0000)
2851 drm_modeset_lock_all(dev
);
2852 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2854 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2858 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc
->base
.id
, crtc
->name
);
2860 if (crtc_req
->mode_valid
) {
2861 /* If we have a mode we need a framebuffer. */
2862 /* If we pass -1, set the mode with the currently bound fb */
2863 if (crtc_req
->fb_id
== -1) {
2864 if (!crtc
->primary
->fb
) {
2865 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2869 fb
= crtc
->primary
->fb
;
2870 /* Make refcounting symmetric with the lookup path. */
2871 drm_framebuffer_reference(fb
);
2873 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2875 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2882 mode
= drm_mode_create(dev
);
2888 ret
= drm_mode_convert_umode(mode
, &crtc_req
->mode
);
2890 DRM_DEBUG_KMS("Invalid mode\n");
2895 * Check whether the primary plane supports the fb pixel format.
2896 * Drivers not implementing the universal planes API use a
2897 * default formats list provided by the DRM core which doesn't
2898 * match real hardware capabilities. Skip the check in that
2901 if (!crtc
->primary
->format_default
) {
2902 ret
= drm_plane_check_pixel_format(crtc
->primary
,
2905 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2906 drm_get_format_name(fb
->pixel_format
));
2911 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2918 if (crtc_req
->count_connectors
== 0 && mode
) {
2919 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2924 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2925 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2926 crtc_req
->count_connectors
);
2931 if (crtc_req
->count_connectors
> 0) {
2934 /* Avoid unbounded kernel memory allocation */
2935 if (crtc_req
->count_connectors
> config
->num_connector
) {
2940 connector_set
= kmalloc_array(crtc_req
->count_connectors
,
2941 sizeof(struct drm_connector
*),
2943 if (!connector_set
) {
2948 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2949 connector_set
[i
] = NULL
;
2950 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2951 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2956 connector
= drm_connector_lookup(dev
, out_id
);
2958 DRM_DEBUG_KMS("Connector id %d unknown\n",
2963 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2967 connector_set
[i
] = connector
;
2972 set
.x
= crtc_req
->x
;
2973 set
.y
= crtc_req
->y
;
2975 set
.connectors
= connector_set
;
2976 set
.num_connectors
= crtc_req
->count_connectors
;
2978 ret
= drm_mode_set_config_internal(&set
);
2982 drm_framebuffer_unreference(fb
);
2984 if (connector_set
) {
2985 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2986 if (connector_set
[i
])
2987 drm_connector_unreference(connector_set
[i
]);
2990 kfree(connector_set
);
2991 drm_mode_destroy(dev
, mode
);
2992 drm_modeset_unlock_all(dev
);
2997 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2998 * universal plane handler call
2999 * @crtc: crtc to update cursor for
3000 * @req: data pointer for the ioctl
3001 * @file_priv: drm file for the ioctl call
3003 * Legacy cursor ioctl's work directly with driver buffer handles. To
3004 * translate legacy ioctl calls into universal plane handler calls, we need to
3005 * wrap the native buffer handle in a drm_framebuffer.
3007 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
3008 * buffer with a pitch of 4*width; the universal plane interface should be used
3009 * directly in cases where the hardware can support other buffer settings and
3010 * userspace wants to make use of these capabilities.
3013 * Zero on success, negative errno on failure.
3015 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
3016 struct drm_mode_cursor2
*req
,
3017 struct drm_file
*file_priv
)
3019 struct drm_device
*dev
= crtc
->dev
;
3020 struct drm_framebuffer
*fb
= NULL
;
3021 struct drm_mode_fb_cmd2 fbreq
= {
3022 .width
= req
->width
,
3023 .height
= req
->height
,
3024 .pixel_format
= DRM_FORMAT_ARGB8888
,
3025 .pitches
= { req
->width
* 4 },
3026 .handles
= { req
->handle
},
3028 int32_t crtc_x
, crtc_y
;
3029 uint32_t crtc_w
= 0, crtc_h
= 0;
3030 uint32_t src_w
= 0, src_h
= 0;
3033 BUG_ON(!crtc
->cursor
);
3034 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
3037 * Obtain fb we'll be using (either new or existing) and take an extra
3038 * reference to it if fb != null. setplane will take care of dropping
3039 * the reference if the plane update fails.
3041 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
3043 fb
= internal_framebuffer_create(dev
, &fbreq
, file_priv
);
3045 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
3048 fb
->hot_x
= req
->hot_x
;
3049 fb
->hot_y
= req
->hot_y
;
3054 fb
= crtc
->cursor
->fb
;
3056 drm_framebuffer_reference(fb
);
3059 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
3063 crtc_x
= crtc
->cursor_x
;
3064 crtc_y
= crtc
->cursor_y
;
3069 crtc_h
= fb
->height
;
3070 src_w
= fb
->width
<< 16;
3071 src_h
= fb
->height
<< 16;
3075 * setplane_internal will take care of deref'ing either the old or new
3076 * framebuffer depending on success.
3078 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
3079 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
3080 0, 0, src_w
, src_h
);
3082 /* Update successful; save new cursor position, if necessary */
3083 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
3084 crtc
->cursor_x
= req
->x
;
3085 crtc
->cursor_y
= req
->y
;
3091 static int drm_mode_cursor_common(struct drm_device
*dev
,
3092 struct drm_mode_cursor2
*req
,
3093 struct drm_file
*file_priv
)
3095 struct drm_crtc
*crtc
;
3098 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3101 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
3104 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
3106 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
3111 * If this crtc has a universal cursor plane, call that plane's update
3112 * handler rather than using legacy cursor handlers.
3114 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
3116 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
3120 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
3121 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
3125 /* Turns off the cursor if handle is 0 */
3126 if (crtc
->funcs
->cursor_set2
)
3127 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
3128 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
3130 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
3131 req
->width
, req
->height
);
3134 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
3135 if (crtc
->funcs
->cursor_move
) {
3136 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
3143 drm_modeset_unlock_crtc(crtc
);
3151 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3152 * @dev: drm device for the ioctl
3153 * @data: data pointer for the ioctl
3154 * @file_priv: drm file for the ioctl call
3156 * Set the cursor configuration based on user request.
3158 * Called by the user via ioctl.
3161 * Zero on success, negative errno on failure.
3163 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
3164 void *data
, struct drm_file
*file_priv
)
3166 struct drm_mode_cursor
*req
= data
;
3167 struct drm_mode_cursor2 new_req
;
3169 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
3170 new_req
.hot_x
= new_req
.hot_y
= 0;
3172 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
3176 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3177 * @dev: drm device for the ioctl
3178 * @data: data pointer for the ioctl
3179 * @file_priv: drm file for the ioctl call
3181 * Set the cursor configuration based on user request. This implements the 2nd
3182 * version of the cursor ioctl, which allows userspace to additionally specify
3183 * the hotspot of the pointer.
3185 * Called by the user via ioctl.
3188 * Zero on success, negative errno on failure.
3190 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
3191 void *data
, struct drm_file
*file_priv
)
3193 struct drm_mode_cursor2
*req
= data
;
3195 return drm_mode_cursor_common(dev
, req
, file_priv
);
3199 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3200 * @bpp: bits per pixels
3201 * @depth: bit depth per pixel
3203 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3204 * Useful in fbdev emulation code, since that deals in those values.
3206 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
3212 fmt
= DRM_FORMAT_C8
;
3216 fmt
= DRM_FORMAT_XRGB1555
;
3218 fmt
= DRM_FORMAT_RGB565
;
3221 fmt
= DRM_FORMAT_RGB888
;
3225 fmt
= DRM_FORMAT_XRGB8888
;
3226 else if (depth
== 30)
3227 fmt
= DRM_FORMAT_XRGB2101010
;
3229 fmt
= DRM_FORMAT_ARGB8888
;
3232 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3233 fmt
= DRM_FORMAT_XRGB8888
;
3239 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
3242 * drm_mode_addfb - add an FB to the graphics 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 * Add a new FB to the specified CRTC, given a user request. This is the
3248 * original addfb ioctl which only supported RGB formats.
3250 * Called by the user via ioctl.
3253 * Zero on success, negative errno on failure.
3255 int drm_mode_addfb(struct drm_device
*dev
,
3256 void *data
, struct drm_file
*file_priv
)
3258 struct drm_mode_fb_cmd
*or = data
;
3259 struct drm_mode_fb_cmd2 r
= {};
3262 /* convert to new format and call new ioctl */
3263 r
.fb_id
= or->fb_id
;
3264 r
.width
= or->width
;
3265 r
.height
= or->height
;
3266 r
.pitches
[0] = or->pitch
;
3267 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
3268 r
.handles
[0] = or->handle
;
3270 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
3274 or->fb_id
= r
.fb_id
;
3279 static int format_check(const struct drm_mode_fb_cmd2
*r
)
3281 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3285 case DRM_FORMAT_RGB332
:
3286 case DRM_FORMAT_BGR233
:
3287 case DRM_FORMAT_XRGB4444
:
3288 case DRM_FORMAT_XBGR4444
:
3289 case DRM_FORMAT_RGBX4444
:
3290 case DRM_FORMAT_BGRX4444
:
3291 case DRM_FORMAT_ARGB4444
:
3292 case DRM_FORMAT_ABGR4444
:
3293 case DRM_FORMAT_RGBA4444
:
3294 case DRM_FORMAT_BGRA4444
:
3295 case DRM_FORMAT_XRGB1555
:
3296 case DRM_FORMAT_XBGR1555
:
3297 case DRM_FORMAT_RGBX5551
:
3298 case DRM_FORMAT_BGRX5551
:
3299 case DRM_FORMAT_ARGB1555
:
3300 case DRM_FORMAT_ABGR1555
:
3301 case DRM_FORMAT_RGBA5551
:
3302 case DRM_FORMAT_BGRA5551
:
3303 case DRM_FORMAT_RGB565
:
3304 case DRM_FORMAT_BGR565
:
3305 case DRM_FORMAT_RGB888
:
3306 case DRM_FORMAT_BGR888
:
3307 case DRM_FORMAT_XRGB8888
:
3308 case DRM_FORMAT_XBGR8888
:
3309 case DRM_FORMAT_RGBX8888
:
3310 case DRM_FORMAT_BGRX8888
:
3311 case DRM_FORMAT_ARGB8888
:
3312 case DRM_FORMAT_ABGR8888
:
3313 case DRM_FORMAT_RGBA8888
:
3314 case DRM_FORMAT_BGRA8888
:
3315 case DRM_FORMAT_XRGB2101010
:
3316 case DRM_FORMAT_XBGR2101010
:
3317 case DRM_FORMAT_RGBX1010102
:
3318 case DRM_FORMAT_BGRX1010102
:
3319 case DRM_FORMAT_ARGB2101010
:
3320 case DRM_FORMAT_ABGR2101010
:
3321 case DRM_FORMAT_RGBA1010102
:
3322 case DRM_FORMAT_BGRA1010102
:
3323 case DRM_FORMAT_YUYV
:
3324 case DRM_FORMAT_YVYU
:
3325 case DRM_FORMAT_UYVY
:
3326 case DRM_FORMAT_VYUY
:
3327 case DRM_FORMAT_AYUV
:
3328 case DRM_FORMAT_NV12
:
3329 case DRM_FORMAT_NV21
:
3330 case DRM_FORMAT_NV16
:
3331 case DRM_FORMAT_NV61
:
3332 case DRM_FORMAT_NV24
:
3333 case DRM_FORMAT_NV42
:
3334 case DRM_FORMAT_YUV410
:
3335 case DRM_FORMAT_YVU410
:
3336 case DRM_FORMAT_YUV411
:
3337 case DRM_FORMAT_YVU411
:
3338 case DRM_FORMAT_YUV420
:
3339 case DRM_FORMAT_YVU420
:
3340 case DRM_FORMAT_YUV422
:
3341 case DRM_FORMAT_YVU422
:
3342 case DRM_FORMAT_YUV444
:
3343 case DRM_FORMAT_YVU444
:
3346 DRM_DEBUG_KMS("invalid pixel format %s\n",
3347 drm_get_format_name(r
->pixel_format
));
3352 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3354 int ret
, hsub
, vsub
, num_planes
, i
;
3356 ret
= format_check(r
);
3358 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3359 drm_get_format_name(r
->pixel_format
));
3363 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3364 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3365 num_planes
= drm_format_num_planes(r
->pixel_format
);
3367 if (r
->width
== 0 || r
->width
% hsub
) {
3368 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3372 if (r
->height
== 0 || r
->height
% vsub
) {
3373 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3377 for (i
= 0; i
< num_planes
; i
++) {
3378 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3379 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3380 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3382 if (!r
->handles
[i
]) {
3383 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3387 if ((uint64_t) width
* cpp
> UINT_MAX
)
3390 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3393 if (r
->pitches
[i
] < width
* cpp
) {
3394 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3398 if (r
->modifier
[i
] && !(r
->flags
& DRM_MODE_FB_MODIFIERS
)) {
3399 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3404 /* modifier specific checks: */
3405 switch (r
->modifier
[i
]) {
3406 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE
:
3407 /* NOTE: the pitch restriction may be lifted later if it turns
3408 * out that no hw has this restriction:
3410 if (r
->pixel_format
!= DRM_FORMAT_NV12
||
3411 width
% 128 || height
% 32 ||
3412 r
->pitches
[i
] % 128) {
3413 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i
);
3423 for (i
= num_planes
; i
< 4; i
++) {
3424 if (r
->modifier
[i
]) {
3425 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i
);
3429 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3430 if (!(r
->flags
& DRM_MODE_FB_MODIFIERS
))
3433 if (r
->handles
[i
]) {
3434 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i
);
3438 if (r
->pitches
[i
]) {
3439 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i
);
3443 if (r
->offsets
[i
]) {
3444 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i
);
3452 static struct drm_framebuffer
*
3453 internal_framebuffer_create(struct drm_device
*dev
,
3454 const struct drm_mode_fb_cmd2
*r
,
3455 struct drm_file
*file_priv
)
3457 struct drm_mode_config
*config
= &dev
->mode_config
;
3458 struct drm_framebuffer
*fb
;
3461 if (r
->flags
& ~(DRM_MODE_FB_INTERLACED
| DRM_MODE_FB_MODIFIERS
)) {
3462 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3463 return ERR_PTR(-EINVAL
);
3466 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3467 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3468 r
->width
, config
->min_width
, config
->max_width
);
3469 return ERR_PTR(-EINVAL
);
3471 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3472 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3473 r
->height
, config
->min_height
, config
->max_height
);
3474 return ERR_PTR(-EINVAL
);
3477 if (r
->flags
& DRM_MODE_FB_MODIFIERS
&&
3478 !dev
->mode_config
.allow_fb_modifiers
) {
3479 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3480 return ERR_PTR(-EINVAL
);
3483 ret
= framebuffer_check(r
);
3485 return ERR_PTR(ret
);
3487 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3489 DRM_DEBUG_KMS("could not create framebuffer\n");
3497 * drm_mode_addfb2 - add an FB to the graphics configuration
3498 * @dev: drm device for the ioctl
3499 * @data: data pointer for the ioctl
3500 * @file_priv: drm file for the ioctl call
3502 * Add a new FB to the specified CRTC, given a user request with format. This is
3503 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3504 * and uses fourcc codes as pixel format specifiers.
3506 * Called by the user via ioctl.
3509 * Zero on success, negative errno on failure.
3511 int drm_mode_addfb2(struct drm_device
*dev
,
3512 void *data
, struct drm_file
*file_priv
)
3514 struct drm_mode_fb_cmd2
*r
= data
;
3515 struct drm_framebuffer
*fb
;
3517 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3520 fb
= internal_framebuffer_create(dev
, r
, file_priv
);
3524 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3525 r
->fb_id
= fb
->base
.id
;
3527 /* Transfer ownership to the filp for reaping on close */
3528 mutex_lock(&file_priv
->fbs_lock
);
3529 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3530 mutex_unlock(&file_priv
->fbs_lock
);
3535 struct drm_mode_rmfb_work
{
3536 struct work_struct work
;
3537 struct list_head fbs
;
3540 static void drm_mode_rmfb_work_fn(struct work_struct
*w
)
3542 struct drm_mode_rmfb_work
*arg
= container_of(w
, typeof(*arg
), work
);
3544 while (!list_empty(&arg
->fbs
)) {
3545 struct drm_framebuffer
*fb
=
3546 list_first_entry(&arg
->fbs
, typeof(*fb
), filp_head
);
3548 list_del_init(&fb
->filp_head
);
3549 drm_framebuffer_remove(fb
);
3554 * drm_mode_rmfb - remove an FB from the configuration
3555 * @dev: drm device for the ioctl
3556 * @data: data pointer for the ioctl
3557 * @file_priv: drm file for the ioctl call
3559 * Remove the FB specified by the user.
3561 * Called by the user via ioctl.
3564 * Zero on success, negative errno on failure.
3566 int drm_mode_rmfb(struct drm_device
*dev
,
3567 void *data
, struct drm_file
*file_priv
)
3569 struct drm_framebuffer
*fb
= NULL
;
3570 struct drm_framebuffer
*fbl
= NULL
;
3571 uint32_t *id
= data
;
3574 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3577 fb
= drm_framebuffer_lookup(dev
, *id
);
3581 mutex_lock(&file_priv
->fbs_lock
);
3582 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3586 mutex_unlock(&file_priv
->fbs_lock
);
3590 list_del_init(&fb
->filp_head
);
3591 mutex_unlock(&file_priv
->fbs_lock
);
3593 /* drop the reference we picked up in framebuffer lookup */
3594 drm_framebuffer_unreference(fb
);
3597 * we now own the reference that was stored in the fbs list
3599 * drm_framebuffer_remove may fail with -EINTR on pending signals,
3600 * so run this in a separate stack as there's no way to correctly
3601 * handle this after the fb is already removed from the lookup table.
3603 if (drm_framebuffer_read_refcount(fb
) > 1) {
3604 struct drm_mode_rmfb_work arg
;
3606 INIT_WORK_ONSTACK(&arg
.work
, drm_mode_rmfb_work_fn
);
3607 INIT_LIST_HEAD(&arg
.fbs
);
3608 list_add_tail(&fb
->filp_head
, &arg
.fbs
);
3610 schedule_work(&arg
.work
);
3611 flush_work(&arg
.work
);
3612 destroy_work_on_stack(&arg
.work
);
3614 drm_framebuffer_unreference(fb
);
3619 drm_framebuffer_unreference(fb
);
3624 * drm_mode_getfb - get FB info
3625 * @dev: drm device for the ioctl
3626 * @data: data pointer for the ioctl
3627 * @file_priv: drm file for the ioctl call
3629 * Lookup the FB given its ID and return info about it.
3631 * Called by the user via ioctl.
3634 * Zero on success, negative errno on failure.
3636 int drm_mode_getfb(struct drm_device
*dev
,
3637 void *data
, struct drm_file
*file_priv
)
3639 struct drm_mode_fb_cmd
*r
= data
;
3640 struct drm_framebuffer
*fb
;
3643 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3646 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3650 r
->height
= fb
->height
;
3651 r
->width
= fb
->width
;
3652 r
->depth
= fb
->depth
;
3653 r
->bpp
= fb
->bits_per_pixel
;
3654 r
->pitch
= fb
->pitches
[0];
3655 if (fb
->funcs
->create_handle
) {
3656 if (drm_is_current_master(file_priv
) || capable(CAP_SYS_ADMIN
) ||
3657 drm_is_control_client(file_priv
)) {
3658 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3661 /* GET_FB() is an unprivileged ioctl so we must not
3662 * return a buffer-handle to non-master processes! For
3663 * backwards-compatibility reasons, we cannot make
3664 * GET_FB() privileged, so just return an invalid handle
3665 * for non-masters. */
3673 drm_framebuffer_unreference(fb
);
3679 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3680 * @dev: drm device for the ioctl
3681 * @data: data pointer for the ioctl
3682 * @file_priv: drm file for the ioctl call
3684 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3685 * rectangle list. Generic userspace which does frontbuffer rendering must call
3686 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3687 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3689 * Modesetting drivers which always update the frontbuffer do not need to
3690 * implement the corresponding ->dirty framebuffer callback.
3692 * Called by the user via ioctl.
3695 * Zero on success, negative errno on failure.
3697 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3698 void *data
, struct drm_file
*file_priv
)
3700 struct drm_clip_rect __user
*clips_ptr
;
3701 struct drm_clip_rect
*clips
= NULL
;
3702 struct drm_mode_fb_dirty_cmd
*r
= data
;
3703 struct drm_framebuffer
*fb
;
3708 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3711 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3715 num_clips
= r
->num_clips
;
3716 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3718 if (!num_clips
!= !clips_ptr
) {
3723 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3725 /* If userspace annotates copy, clips must come in pairs */
3726 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3731 if (num_clips
&& clips_ptr
) {
3732 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3736 clips
= kcalloc(num_clips
, sizeof(*clips
), GFP_KERNEL
);
3742 ret
= copy_from_user(clips
, clips_ptr
,
3743 num_clips
* sizeof(*clips
));
3750 if (fb
->funcs
->dirty
) {
3751 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3760 drm_framebuffer_unreference(fb
);
3766 * drm_fb_release - remove and free the FBs on this file
3767 * @priv: drm file for the ioctl
3769 * Destroy all the FBs associated with @filp.
3771 * Called by the user via ioctl.
3774 * Zero on success, negative errno on failure.
3776 void drm_fb_release(struct drm_file
*priv
)
3778 struct drm_framebuffer
*fb
, *tfb
;
3779 struct drm_mode_rmfb_work arg
;
3781 INIT_LIST_HEAD(&arg
.fbs
);
3784 * When the file gets released that means no one else can access the fb
3785 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3786 * avoid upsetting lockdep since the universal cursor code adds a
3787 * framebuffer while holding mutex locks.
3789 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3790 * locks is impossible here since no one else but this function can get
3793 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3794 if (drm_framebuffer_read_refcount(fb
) > 1) {
3795 list_move_tail(&fb
->filp_head
, &arg
.fbs
);
3797 list_del_init(&fb
->filp_head
);
3799 /* This drops the fpriv->fbs reference. */
3800 drm_framebuffer_unreference(fb
);
3804 if (!list_empty(&arg
.fbs
)) {
3805 INIT_WORK_ONSTACK(&arg
.work
, drm_mode_rmfb_work_fn
);
3807 schedule_work(&arg
.work
);
3808 flush_work(&arg
.work
);
3809 destroy_work_on_stack(&arg
.work
);
3813 static bool drm_property_type_valid(struct drm_property
*property
)
3815 if (property
->flags
& DRM_MODE_PROP_EXTENDED_TYPE
)
3816 return !(property
->flags
& DRM_MODE_PROP_LEGACY_TYPE
);
3817 return !!(property
->flags
& DRM_MODE_PROP_LEGACY_TYPE
);
3821 * drm_property_create - create a new property type
3823 * @flags: flags specifying the property type
3824 * @name: name of the property
3825 * @num_values: number of pre-defined values
3827 * This creates a new generic drm property which can then be attached to a drm
3828 * object with drm_object_attach_property. The returned property object must be
3829 * freed with drm_property_destroy.
3831 * Note that the DRM core keeps a per-device list of properties and that, if
3832 * drm_mode_config_cleanup() is called, it will destroy all properties created
3836 * A pointer to the newly created property on success, NULL on failure.
3838 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3839 const char *name
, int num_values
)
3841 struct drm_property
*property
= NULL
;
3844 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3848 property
->dev
= dev
;
3851 property
->values
= kcalloc(num_values
, sizeof(uint64_t),
3853 if (!property
->values
)
3857 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3861 property
->flags
= flags
;
3862 property
->num_values
= num_values
;
3863 INIT_LIST_HEAD(&property
->enum_list
);
3866 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3867 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3870 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3872 WARN_ON(!drm_property_type_valid(property
));
3876 kfree(property
->values
);
3880 EXPORT_SYMBOL(drm_property_create
);
3883 * drm_property_create_enum - create a new enumeration property type
3885 * @flags: flags specifying the property type
3886 * @name: name of the property
3887 * @props: enumeration lists with property values
3888 * @num_values: number of pre-defined values
3890 * This creates a new generic drm property which can then be attached to a drm
3891 * object with drm_object_attach_property. The returned property object must be
3892 * freed with drm_property_destroy.
3894 * Userspace is only allowed to set one of the predefined values for enumeration
3898 * A pointer to the newly created property on success, NULL on failure.
3900 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3902 const struct drm_prop_enum_list
*props
,
3905 struct drm_property
*property
;
3908 flags
|= DRM_MODE_PROP_ENUM
;
3910 property
= drm_property_create(dev
, flags
, name
, num_values
);
3914 for (i
= 0; i
< num_values
; i
++) {
3915 ret
= drm_property_add_enum(property
, i
,
3919 drm_property_destroy(dev
, property
);
3926 EXPORT_SYMBOL(drm_property_create_enum
);
3929 * drm_property_create_bitmask - create a new bitmask property type
3931 * @flags: flags specifying the property type
3932 * @name: name of the property
3933 * @props: enumeration lists with property bitflags
3934 * @num_props: size of the @props array
3935 * @supported_bits: bitmask of all supported enumeration values
3937 * This creates a new bitmask drm property which can then be attached to a drm
3938 * object with drm_object_attach_property. The returned property object must be
3939 * freed with drm_property_destroy.
3941 * Compared to plain enumeration properties userspace is allowed to set any
3942 * or'ed together combination of the predefined property bitflag values
3945 * A pointer to the newly created property on success, NULL on failure.
3947 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3948 int flags
, const char *name
,
3949 const struct drm_prop_enum_list
*props
,
3951 uint64_t supported_bits
)
3953 struct drm_property
*property
;
3954 int i
, ret
, index
= 0;
3955 int num_values
= hweight64(supported_bits
);
3957 flags
|= DRM_MODE_PROP_BITMASK
;
3959 property
= drm_property_create(dev
, flags
, name
, num_values
);
3962 for (i
= 0; i
< num_props
; i
++) {
3963 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3966 if (WARN_ON(index
>= num_values
)) {
3967 drm_property_destroy(dev
, property
);
3971 ret
= drm_property_add_enum(property
, index
++,
3975 drm_property_destroy(dev
, property
);
3982 EXPORT_SYMBOL(drm_property_create_bitmask
);
3984 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3985 int flags
, const char *name
,
3986 uint64_t min
, uint64_t max
)
3988 struct drm_property
*property
;
3990 property
= drm_property_create(dev
, flags
, name
, 2);
3994 property
->values
[0] = min
;
3995 property
->values
[1] = max
;
4001 * drm_property_create_range - create a new unsigned ranged property type
4003 * @flags: flags specifying the property type
4004 * @name: name of the property
4005 * @min: minimum value of the property
4006 * @max: maximum value of the property
4008 * This creates a new generic drm property which can then be attached to a drm
4009 * object with drm_object_attach_property. The returned property object must be
4010 * freed with drm_property_destroy.
4012 * Userspace is allowed to set any unsigned integer value in the (min, max)
4016 * A pointer to the newly created property on success, NULL on failure.
4018 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
4020 uint64_t min
, uint64_t max
)
4022 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
4025 EXPORT_SYMBOL(drm_property_create_range
);
4028 * drm_property_create_signed_range - create a new signed ranged property type
4030 * @flags: flags specifying the property type
4031 * @name: name of the property
4032 * @min: minimum value of the property
4033 * @max: maximum value of the property
4035 * This creates a new generic drm property which can then be attached to a drm
4036 * object with drm_object_attach_property. The returned property object must be
4037 * freed with drm_property_destroy.
4039 * Userspace is allowed to set any signed integer value in the (min, max)
4043 * A pointer to the newly created property on success, NULL on failure.
4045 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
4046 int flags
, const char *name
,
4047 int64_t min
, int64_t max
)
4049 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
4050 name
, I642U64(min
), I642U64(max
));
4052 EXPORT_SYMBOL(drm_property_create_signed_range
);
4055 * drm_property_create_object - create a new object property type
4057 * @flags: flags specifying the property type
4058 * @name: name of the property
4059 * @type: object type from DRM_MODE_OBJECT_* defines
4061 * This creates a new generic drm property which can then be attached to a drm
4062 * object with drm_object_attach_property. The returned property object must be
4063 * freed with drm_property_destroy.
4065 * Userspace is only allowed to set this to any property value of the given
4066 * @type. Only useful for atomic properties, which is enforced.
4069 * A pointer to the newly created property on success, NULL on failure.
4071 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
4072 int flags
, const char *name
, uint32_t type
)
4074 struct drm_property
*property
;
4076 flags
|= DRM_MODE_PROP_OBJECT
;
4078 if (WARN_ON(!(flags
& DRM_MODE_PROP_ATOMIC
)))
4081 property
= drm_property_create(dev
, flags
, name
, 1);
4085 property
->values
[0] = type
;
4089 EXPORT_SYMBOL(drm_property_create_object
);
4092 * drm_property_create_bool - create a new boolean property type
4094 * @flags: flags specifying the property type
4095 * @name: name of the property
4097 * This creates a new generic drm property which can then be attached to a drm
4098 * object with drm_object_attach_property. The returned property object must be
4099 * freed with drm_property_destroy.
4101 * This is implemented as a ranged property with only {0, 1} as valid values.
4104 * A pointer to the newly created property on success, NULL on failure.
4106 struct drm_property
*drm_property_create_bool(struct drm_device
*dev
, int flags
,
4109 return drm_property_create_range(dev
, flags
, name
, 0, 1);
4111 EXPORT_SYMBOL(drm_property_create_bool
);
4114 * drm_property_add_enum - add a possible value to an enumeration property
4115 * @property: enumeration property to change
4116 * @index: index of the new enumeration
4117 * @value: value of the new enumeration
4118 * @name: symbolic name of the new enumeration
4120 * This functions adds enumerations to a property.
4122 * It's use is deprecated, drivers should use one of the more specific helpers
4123 * to directly create the property with all enumerations already attached.
4126 * Zero on success, error code on failure.
4128 int drm_property_add_enum(struct drm_property
*property
, int index
,
4129 uint64_t value
, const char *name
)
4131 struct drm_property_enum
*prop_enum
;
4133 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4134 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
4138 * Bitmask enum properties have the additional constraint of values
4141 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
4145 if (!list_empty(&property
->enum_list
)) {
4146 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
4147 if (prop_enum
->value
== value
) {
4148 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
4149 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
4155 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
4159 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
4160 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
4161 prop_enum
->value
= value
;
4163 property
->values
[index
] = value
;
4164 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
4167 EXPORT_SYMBOL(drm_property_add_enum
);
4170 * drm_property_destroy - destroy a drm property
4172 * @property: property to destry
4174 * This function frees a property including any attached resources like
4175 * enumeration values.
4177 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
4179 struct drm_property_enum
*prop_enum
, *pt
;
4181 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
4182 list_del(&prop_enum
->head
);
4186 if (property
->num_values
)
4187 kfree(property
->values
);
4188 drm_mode_object_unregister(dev
, &property
->base
);
4189 list_del(&property
->head
);
4192 EXPORT_SYMBOL(drm_property_destroy
);
4195 * drm_object_attach_property - attach a property to a modeset object
4196 * @obj: drm modeset object
4197 * @property: property to attach
4198 * @init_val: initial value of the property
4200 * This attaches the given property to the modeset object with the given initial
4201 * value. Currently this function cannot fail since the properties are stored in
4202 * a statically sized array.
4204 void drm_object_attach_property(struct drm_mode_object
*obj
,
4205 struct drm_property
*property
,
4208 int count
= obj
->properties
->count
;
4210 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
4211 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4212 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4213 "you see this message on the same object type.\n",
4218 obj
->properties
->properties
[count
] = property
;
4219 obj
->properties
->values
[count
] = init_val
;
4220 obj
->properties
->count
++;
4221 if (property
->flags
& DRM_MODE_PROP_ATOMIC
)
4222 obj
->properties
->atomic_count
++;
4224 EXPORT_SYMBOL(drm_object_attach_property
);
4227 * drm_object_property_set_value - set the value of a property
4228 * @obj: drm mode object to set property value for
4229 * @property: property to set
4230 * @val: value the property should be set to
4232 * This functions sets a given property on a given object. This function only
4233 * changes the software state of the property, it does not call into the
4234 * driver's ->set_property callback.
4237 * Zero on success, error code on failure.
4239 int drm_object_property_set_value(struct drm_mode_object
*obj
,
4240 struct drm_property
*property
, uint64_t val
)
4244 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4245 if (obj
->properties
->properties
[i
] == property
) {
4246 obj
->properties
->values
[i
] = val
;
4253 EXPORT_SYMBOL(drm_object_property_set_value
);
4256 * drm_object_property_get_value - retrieve the value of a property
4257 * @obj: drm mode object to get property value from
4258 * @property: property to retrieve
4259 * @val: storage for the property value
4261 * This function retrieves the softare state of the given property for the given
4262 * property. Since there is no driver callback to retrieve the current property
4263 * value this might be out of sync with the hardware, depending upon the driver
4267 * Zero on success, error code on failure.
4269 int drm_object_property_get_value(struct drm_mode_object
*obj
,
4270 struct drm_property
*property
, uint64_t *val
)
4274 /* read-only properties bypass atomic mechanism and still store
4275 * their value in obj->properties->values[].. mostly to avoid
4276 * having to deal w/ EDID and similar props in atomic paths:
4278 if (drm_core_check_feature(property
->dev
, DRIVER_ATOMIC
) &&
4279 !(property
->flags
& DRM_MODE_PROP_IMMUTABLE
))
4280 return drm_atomic_get_property(obj
, property
, val
);
4282 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4283 if (obj
->properties
->properties
[i
] == property
) {
4284 *val
= obj
->properties
->values
[i
];
4291 EXPORT_SYMBOL(drm_object_property_get_value
);
4294 * drm_mode_getproperty_ioctl - get the property metadata
4297 * @file_priv: DRM file info
4299 * This function retrieves the metadata for a given property, like the different
4300 * possible values for an enum property or the limits for a range property.
4302 * Blob properties are special
4304 * Called by the user via ioctl.
4307 * Zero on success, negative errno on failure.
4309 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
4310 void *data
, struct drm_file
*file_priv
)
4312 struct drm_mode_get_property
*out_resp
= data
;
4313 struct drm_property
*property
;
4315 int value_count
= 0;
4318 struct drm_property_enum
*prop_enum
;
4319 struct drm_mode_property_enum __user
*enum_ptr
;
4320 uint64_t __user
*values_ptr
;
4322 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4325 drm_modeset_lock_all(dev
);
4326 property
= drm_property_find(dev
, out_resp
->prop_id
);
4332 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4333 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4334 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
4338 value_count
= property
->num_values
;
4340 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
4341 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
4342 out_resp
->flags
= property
->flags
;
4344 if ((out_resp
->count_values
>= value_count
) && value_count
) {
4345 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
4346 for (i
= 0; i
< value_count
; i
++) {
4347 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
4353 out_resp
->count_values
= value_count
;
4355 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4356 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4357 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
4359 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
4360 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
4362 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
4367 if (copy_to_user(&enum_ptr
[copied
].name
,
4368 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
4375 out_resp
->count_enum_blobs
= enum_count
;
4379 * NOTE: The idea seems to have been to use this to read all the blob
4380 * property values. But nothing ever added them to the corresponding
4381 * list, userspace always used the special-purpose get_blob ioctl to
4382 * read the value for a blob property. It also doesn't make a lot of
4383 * sense to return values here when everything else is just metadata for
4384 * the property itself.
4386 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4387 out_resp
->count_enum_blobs
= 0;
4389 drm_modeset_unlock_all(dev
);
4393 static void drm_property_free_blob(struct kref
*kref
)
4395 struct drm_property_blob
*blob
=
4396 container_of(kref
, struct drm_property_blob
, base
.refcount
);
4398 mutex_lock(&blob
->dev
->mode_config
.blob_lock
);
4399 list_del(&blob
->head_global
);
4400 mutex_unlock(&blob
->dev
->mode_config
.blob_lock
);
4402 drm_mode_object_unregister(blob
->dev
, &blob
->base
);
4408 * drm_property_create_blob - Create new blob property
4410 * Creates a new blob property for a specified DRM device, optionally
4413 * @dev: DRM device to create property for
4414 * @length: Length to allocate for blob data
4415 * @data: If specified, copies data into blob
4418 * New blob property with a single reference on success, or an ERR_PTR
4421 struct drm_property_blob
*
4422 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
4425 struct drm_property_blob
*blob
;
4428 if (!length
|| length
> ULONG_MAX
- sizeof(struct drm_property_blob
))
4429 return ERR_PTR(-EINVAL
);
4431 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
4433 return ERR_PTR(-ENOMEM
);
4435 /* This must be explicitly initialised, so we can safely call list_del
4436 * on it in the removal handler, even if it isn't in a file list. */
4437 INIT_LIST_HEAD(&blob
->head_file
);
4438 blob
->length
= length
;
4442 memcpy(blob
->data
, data
, length
);
4444 ret
= drm_mode_object_get_reg(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
,
4445 true, drm_property_free_blob
);
4448 return ERR_PTR(-EINVAL
);
4451 mutex_lock(&dev
->mode_config
.blob_lock
);
4452 list_add_tail(&blob
->head_global
,
4453 &dev
->mode_config
.property_blob_list
);
4454 mutex_unlock(&dev
->mode_config
.blob_lock
);
4458 EXPORT_SYMBOL(drm_property_create_blob
);
4461 * drm_property_unreference_blob - Unreference a blob property
4463 * Drop a reference on a blob property. May free the object.
4465 * @blob: Pointer to blob property
4467 void drm_property_unreference_blob(struct drm_property_blob
*blob
)
4472 drm_mode_object_unreference(&blob
->base
);
4474 EXPORT_SYMBOL(drm_property_unreference_blob
);
4477 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4479 * @file_priv: destroy all blobs owned by this file handle
4481 void drm_property_destroy_user_blobs(struct drm_device
*dev
,
4482 struct drm_file
*file_priv
)
4484 struct drm_property_blob
*blob
, *bt
;
4487 * When the file gets released that means no one else can access the
4488 * blob list any more, so no need to grab dev->blob_lock.
4490 list_for_each_entry_safe(blob
, bt
, &file_priv
->blobs
, head_file
) {
4491 list_del_init(&blob
->head_file
);
4492 drm_property_unreference_blob(blob
);
4497 * drm_property_reference_blob - Take a reference on an existing property
4499 * Take a new reference on an existing blob property.
4501 * @blob: Pointer to blob property
4503 struct drm_property_blob
*drm_property_reference_blob(struct drm_property_blob
*blob
)
4505 drm_mode_object_reference(&blob
->base
);
4508 EXPORT_SYMBOL(drm_property_reference_blob
);
4511 * drm_property_lookup_blob - look up a blob property and take a reference
4513 * @id: id of the blob property
4515 * If successful, this takes an additional reference to the blob property.
4516 * callers need to make sure to eventually unreference the returned property
4517 * again, using @drm_property_unreference_blob.
4519 struct drm_property_blob
*drm_property_lookup_blob(struct drm_device
*dev
,
4522 struct drm_mode_object
*obj
;
4523 struct drm_property_blob
*blob
= NULL
;
4525 obj
= _object_find(dev
, id
, DRM_MODE_OBJECT_BLOB
);
4527 blob
= obj_to_blob(obj
);
4530 EXPORT_SYMBOL(drm_property_lookup_blob
);
4533 * drm_property_replace_global_blob - atomically replace existing blob property
4535 * @replace: location of blob property pointer to be replaced
4536 * @length: length of data for new blob, or 0 for no data
4537 * @data: content for new blob, or NULL for no data
4538 * @obj_holds_id: optional object for property holding blob ID
4539 * @prop_holds_id: optional property holding blob ID
4540 * @return 0 on success or error on failure
4542 * This function will atomically replace a global property in the blob list,
4543 * optionally updating a property which holds the ID of that property. It is
4544 * guaranteed to be atomic: no caller will be allowed to see intermediate
4545 * results, and either the entire operation will succeed and clean up the
4546 * previous property, or it will fail and the state will be unchanged.
4548 * If length is 0 or data is NULL, no new blob will be created, and the holding
4549 * property, if specified, will be set to 0.
4551 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4552 * by holding the relevant modesetting object lock for its parent.
4554 * For example, a drm_connector has a 'PATH' property, which contains the ID
4555 * of a blob property with the value of the MST path information. Calling this
4556 * function with replace pointing to the connector's path_blob_ptr, length and
4557 * data set for the new path information, obj_holds_id set to the connector's
4558 * base object, and prop_holds_id set to the path property name, will perform
4559 * a completely atomic update. The access to path_blob_ptr is protected by the
4560 * caller holding a lock on the connector.
4562 static int drm_property_replace_global_blob(struct drm_device
*dev
,
4563 struct drm_property_blob
**replace
,
4566 struct drm_mode_object
*obj_holds_id
,
4567 struct drm_property
*prop_holds_id
)
4569 struct drm_property_blob
*new_blob
= NULL
;
4570 struct drm_property_blob
*old_blob
= NULL
;
4573 WARN_ON(replace
== NULL
);
4575 old_blob
= *replace
;
4577 if (length
&& data
) {
4578 new_blob
= drm_property_create_blob(dev
, length
, data
);
4579 if (IS_ERR(new_blob
))
4580 return PTR_ERR(new_blob
);
4583 /* This does not need to be synchronised with blob_lock, as the
4584 * get_properties ioctl locks all modesetting objects, and
4585 * obj_holds_id must be locked before calling here, so we cannot
4586 * have its value out of sync with the list membership modified
4587 * below under blob_lock. */
4589 ret
= drm_object_property_set_value(obj_holds_id
,
4592 new_blob
->base
.id
: 0);
4597 drm_property_unreference_blob(old_blob
);
4598 *replace
= new_blob
;
4603 drm_property_unreference_blob(new_blob
);
4608 * drm_mode_getblob_ioctl - get the contents of a blob property value
4611 * @file_priv: DRM file info
4613 * This function retrieves the contents of a blob property. The value stored in
4614 * an object's blob property is just a normal modeset object id.
4616 * Called by the user via ioctl.
4619 * Zero on success, negative errno on failure.
4621 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
4622 void *data
, struct drm_file
*file_priv
)
4624 struct drm_mode_get_blob
*out_resp
= data
;
4625 struct drm_property_blob
*blob
;
4627 void __user
*blob_ptr
;
4629 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4632 blob
= drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4636 if (out_resp
->length
== blob
->length
) {
4637 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4638 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)) {
4643 out_resp
->length
= blob
->length
;
4645 drm_property_unreference_blob(blob
);
4651 * drm_mode_createblob_ioctl - create a new blob property
4654 * @file_priv: DRM file info
4656 * This function creates a new blob property with user-defined values. In order
4657 * to give us sensible validation and checking when creating, rather than at
4658 * every potential use, we also require a type to be provided upfront.
4660 * Called by the user via ioctl.
4663 * Zero on success, negative errno on failure.
4665 int drm_mode_createblob_ioctl(struct drm_device
*dev
,
4666 void *data
, struct drm_file
*file_priv
)
4668 struct drm_mode_create_blob
*out_resp
= data
;
4669 struct drm_property_blob
*blob
;
4670 void __user
*blob_ptr
;
4673 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4676 blob
= drm_property_create_blob(dev
, out_resp
->length
, NULL
);
4678 return PTR_ERR(blob
);
4680 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4681 if (copy_from_user(blob
->data
, blob_ptr
, out_resp
->length
)) {
4686 /* Dropping the lock between create_blob and our access here is safe
4687 * as only the same file_priv can remove the blob; at this point, it is
4688 * not associated with any file_priv. */
4689 mutex_lock(&dev
->mode_config
.blob_lock
);
4690 out_resp
->blob_id
= blob
->base
.id
;
4691 list_add_tail(&blob
->head_file
, &file_priv
->blobs
);
4692 mutex_unlock(&dev
->mode_config
.blob_lock
);
4697 drm_property_unreference_blob(blob
);
4702 * drm_mode_destroyblob_ioctl - destroy a user blob property
4705 * @file_priv: DRM file info
4707 * Destroy an existing user-defined blob property.
4709 * Called by the user via ioctl.
4712 * Zero on success, negative errno on failure.
4714 int drm_mode_destroyblob_ioctl(struct drm_device
*dev
,
4715 void *data
, struct drm_file
*file_priv
)
4717 struct drm_mode_destroy_blob
*out_resp
= data
;
4718 struct drm_property_blob
*blob
= NULL
, *bt
;
4722 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4725 blob
= drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4729 mutex_lock(&dev
->mode_config
.blob_lock
);
4730 /* Ensure the property was actually created by this user. */
4731 list_for_each_entry(bt
, &file_priv
->blobs
, head_file
) {
4743 /* We must drop head_file here, because we may not be the last
4744 * reference on the blob. */
4745 list_del_init(&blob
->head_file
);
4746 mutex_unlock(&dev
->mode_config
.blob_lock
);
4748 /* One reference from lookup, and one from the filp. */
4749 drm_property_unreference_blob(blob
);
4750 drm_property_unreference_blob(blob
);
4755 mutex_unlock(&dev
->mode_config
.blob_lock
);
4756 drm_property_unreference_blob(blob
);
4762 * drm_mode_connector_set_path_property - set tile property on connector
4763 * @connector: connector to set property on.
4764 * @path: path to use for property; must not be NULL.
4766 * This creates a property to expose to userspace to specify a
4767 * connector path. This is mainly used for DisplayPort MST where
4768 * connectors have a topology and we want to allow userspace to give
4769 * them more meaningful names.
4772 * Zero on success, negative errno on failure.
4774 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4777 struct drm_device
*dev
= connector
->dev
;
4780 ret
= drm_property_replace_global_blob(dev
,
4781 &connector
->path_blob_ptr
,
4785 dev
->mode_config
.path_property
);
4788 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4791 * drm_mode_connector_set_tile_property - set tile property on connector
4792 * @connector: connector to set property on.
4794 * This looks up the tile information for a connector, and creates a
4795 * property for userspace to parse if it exists. The property is of
4796 * the form of 8 integers using ':' as a separator.
4799 * Zero on success, errno on failure.
4801 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
)
4803 struct drm_device
*dev
= connector
->dev
;
4807 if (!connector
->has_tile
) {
4808 ret
= drm_property_replace_global_blob(dev
,
4809 &connector
->tile_blob_ptr
,
4813 dev
->mode_config
.tile_property
);
4817 snprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4818 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
4819 connector
->num_h_tile
, connector
->num_v_tile
,
4820 connector
->tile_h_loc
, connector
->tile_v_loc
,
4821 connector
->tile_h_size
, connector
->tile_v_size
);
4823 ret
= drm_property_replace_global_blob(dev
,
4824 &connector
->tile_blob_ptr
,
4828 dev
->mode_config
.tile_property
);
4831 EXPORT_SYMBOL(drm_mode_connector_set_tile_property
);
4834 * drm_mode_connector_update_edid_property - update the edid property of a connector
4835 * @connector: drm connector
4836 * @edid: new value of the edid property
4838 * This function creates a new blob modeset object and assigns its id to the
4839 * connector's edid property.
4842 * Zero on success, negative errno on failure.
4844 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4845 const struct edid
*edid
)
4847 struct drm_device
*dev
= connector
->dev
;
4851 /* ignore requests to set edid when overridden */
4852 if (connector
->override_edid
)
4856 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4858 ret
= drm_property_replace_global_blob(dev
,
4859 &connector
->edid_blob_ptr
,
4863 dev
->mode_config
.edid_property
);
4866 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4868 /* Some properties could refer to dynamic refcnt'd objects, or things that
4869 * need special locking to handle lifetime issues (ie. to ensure the prop
4870 * value doesn't become invalid part way through the property update due to
4871 * race). The value returned by reference via 'obj' should be passed back
4872 * to drm_property_change_valid_put() after the property is set (and the
4873 * object to which the property is attached has a chance to take it's own
4876 bool drm_property_change_valid_get(struct drm_property
*property
,
4877 uint64_t value
, struct drm_mode_object
**ref
)
4881 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4886 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4887 if (value
< property
->values
[0] || value
> property
->values
[1])
4890 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4891 int64_t svalue
= U642I64(value
);
4893 if (svalue
< U642I64(property
->values
[0]) ||
4894 svalue
> U642I64(property
->values
[1]))
4897 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4898 uint64_t valid_mask
= 0;
4900 for (i
= 0; i
< property
->num_values
; i
++)
4901 valid_mask
|= (1ULL << property
->values
[i
]);
4902 return !(value
& ~valid_mask
);
4903 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4904 struct drm_property_blob
*blob
;
4909 blob
= drm_property_lookup_blob(property
->dev
, value
);
4916 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4917 /* a zero value for an object property translates to null: */
4921 *ref
= _object_find(property
->dev
, value
, property
->values
[0]);
4922 return *ref
!= NULL
;
4925 for (i
= 0; i
< property
->num_values
; i
++)
4926 if (property
->values
[i
] == value
)
4931 void drm_property_change_valid_put(struct drm_property
*property
,
4932 struct drm_mode_object
*ref
)
4937 if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4938 drm_mode_object_unreference(ref
);
4939 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4940 drm_property_unreference_blob(obj_to_blob(ref
));
4944 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4947 * @file_priv: DRM file info
4949 * This function sets the current value for a connectors's property. It also
4950 * calls into a driver's ->set_property callback to update the hardware state
4952 * Called by the user via ioctl.
4955 * Zero on success, negative errno on failure.
4957 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4958 void *data
, struct drm_file
*file_priv
)
4960 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4961 struct drm_mode_obj_set_property obj_set_prop
= {
4962 .value
= conn_set_prop
->value
,
4963 .prop_id
= conn_set_prop
->prop_id
,
4964 .obj_id
= conn_set_prop
->connector_id
,
4965 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4968 /* It does all the locking and checking we need */
4969 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4972 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4973 struct drm_property
*property
,
4977 struct drm_connector
*connector
= obj_to_connector(obj
);
4979 /* Do DPMS ourselves */
4980 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4981 ret
= (*connector
->funcs
->dpms
)(connector
, (int)value
);
4982 } else if (connector
->funcs
->set_property
)
4983 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4985 /* store the property value if successful */
4987 drm_object_property_set_value(&connector
->base
, property
, value
);
4991 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4992 struct drm_property
*property
,
4996 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4998 if (crtc
->funcs
->set_property
)
4999 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
5001 drm_object_property_set_value(obj
, property
, value
);
5007 * drm_mode_plane_set_obj_prop - set the value of a property
5008 * @plane: drm plane object to set property value for
5009 * @property: property to set
5010 * @value: value the property should be set to
5012 * This functions sets a given property on a given plane object. This function
5013 * calls the driver's ->set_property callback and changes the software state of
5014 * the property if the callback succeeds.
5017 * Zero on success, error code on failure.
5019 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
5020 struct drm_property
*property
,
5024 struct drm_mode_object
*obj
= &plane
->base
;
5026 if (plane
->funcs
->set_property
)
5027 ret
= plane
->funcs
->set_property(plane
, property
, value
);
5029 drm_object_property_set_value(obj
, property
, value
);
5033 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
5036 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
5039 * @file_priv: DRM file info
5041 * This function retrieves the current value for an object's property. Compared
5042 * to the connector specific ioctl this one is extended to also work on crtc and
5045 * Called by the user via ioctl.
5048 * Zero on success, negative errno on failure.
5050 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
5051 struct drm_file
*file_priv
)
5053 struct drm_mode_obj_get_properties
*arg
= data
;
5054 struct drm_mode_object
*obj
;
5057 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5060 drm_modeset_lock_all(dev
);
5062 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
5067 if (!obj
->properties
) {
5072 ret
= get_properties(obj
, file_priv
->atomic
,
5073 (uint32_t __user
*)(unsigned long)(arg
->props_ptr
),
5074 (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
),
5078 drm_mode_object_unreference(obj
);
5080 drm_modeset_unlock_all(dev
);
5085 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
5088 * @file_priv: DRM file info
5090 * This function sets the current value for an object's property. It also calls
5091 * into a driver's ->set_property callback to update the hardware state.
5092 * Compared to the connector specific ioctl this one is extended to also work on
5093 * crtc and plane objects.
5095 * Called by the user via ioctl.
5098 * Zero on success, negative errno on failure.
5100 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
5101 struct drm_file
*file_priv
)
5103 struct drm_mode_obj_set_property
*arg
= data
;
5104 struct drm_mode_object
*arg_obj
;
5105 struct drm_mode_object
*prop_obj
;
5106 struct drm_property
*property
;
5107 int i
, ret
= -EINVAL
;
5108 struct drm_mode_object
*ref
;
5110 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5113 drm_modeset_lock_all(dev
);
5115 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
5120 if (!arg_obj
->properties
)
5123 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
5124 if (arg_obj
->properties
->properties
[i
]->base
.id
== arg
->prop_id
)
5127 if (i
== arg_obj
->properties
->count
)
5130 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
5131 DRM_MODE_OBJECT_PROPERTY
);
5136 property
= obj_to_property(prop_obj
);
5138 if (!drm_property_change_valid_get(property
, arg
->value
, &ref
))
5141 switch (arg_obj
->type
) {
5142 case DRM_MODE_OBJECT_CONNECTOR
:
5143 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
5146 case DRM_MODE_OBJECT_CRTC
:
5147 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
5149 case DRM_MODE_OBJECT_PLANE
:
5150 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
5151 property
, arg
->value
);
5155 drm_property_change_valid_put(property
, ref
);
5158 drm_mode_object_unreference(arg_obj
);
5160 drm_modeset_unlock_all(dev
);
5165 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5166 * @connector: connector to attach
5167 * @encoder: encoder to attach @connector to
5169 * This function links up a connector to an encoder. Note that the routing
5170 * restrictions between encoders and crtcs are exposed to userspace through the
5171 * possible_clones and possible_crtcs bitmasks.
5174 * Zero on success, negative errno on failure.
5176 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
5177 struct drm_encoder
*encoder
)
5182 * In the past, drivers have attempted to model the static association
5183 * of connector to encoder in simple connector/encoder devices using a
5184 * direct assignment of connector->encoder = encoder. This connection
5185 * is a logical one and the responsibility of the core, so drivers are
5186 * expected not to mess with this.
5188 * Note that the error return should've been enough here, but a large
5189 * majority of drivers ignores the return value, so add in a big WARN
5190 * to get people's attention.
5192 if (WARN_ON(connector
->encoder
))
5195 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
5196 if (connector
->encoder_ids
[i
] == 0) {
5197 connector
->encoder_ids
[i
] = encoder
->base
.id
;
5203 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
5206 * drm_mode_crtc_set_gamma_size - set the gamma table size
5207 * @crtc: CRTC to set the gamma table size for
5208 * @gamma_size: size of the gamma table
5210 * Drivers which support gamma tables should set this to the supported gamma
5211 * table size when initializing the CRTC. Currently the drm core only supports a
5212 * fixed gamma table size.
5215 * Zero on success, negative errno on failure.
5217 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
5220 uint16_t *r_base
, *g_base
, *b_base
;
5223 crtc
->gamma_size
= gamma_size
;
5225 crtc
->gamma_store
= kcalloc(gamma_size
, sizeof(uint16_t) * 3,
5227 if (!crtc
->gamma_store
) {
5228 crtc
->gamma_size
= 0;
5232 r_base
= crtc
->gamma_store
;
5233 g_base
= r_base
+ gamma_size
;
5234 b_base
= g_base
+ gamma_size
;
5235 for (i
= 0; i
< gamma_size
; i
++) {
5244 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
5247 * drm_mode_gamma_set_ioctl - set the gamma table
5250 * @file_priv: DRM file info
5252 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5253 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5255 * Called by the user via ioctl.
5258 * Zero on success, negative errno on failure.
5260 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
5261 void *data
, struct drm_file
*file_priv
)
5263 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5264 struct drm_crtc
*crtc
;
5265 void *r_base
, *g_base
, *b_base
;
5269 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5272 drm_modeset_lock_all(dev
);
5273 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5279 if (crtc
->funcs
->gamma_set
== NULL
) {
5284 /* memcpy into gamma store */
5285 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5290 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5291 r_base
= crtc
->gamma_store
;
5292 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
5297 g_base
= r_base
+ size
;
5298 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
5303 b_base
= g_base
+ size
;
5304 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
5309 ret
= crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, crtc
->gamma_size
);
5312 drm_modeset_unlock_all(dev
);
5318 * drm_mode_gamma_get_ioctl - get the gamma table
5321 * @file_priv: DRM file info
5323 * Copy the current gamma table into the storage provided. This also provides
5324 * the gamma table size the driver expects, which can be used to size the
5325 * allocated storage.
5327 * Called by the user via ioctl.
5330 * Zero on success, negative errno on failure.
5332 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
5333 void *data
, struct drm_file
*file_priv
)
5335 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5336 struct drm_crtc
*crtc
;
5337 void *r_base
, *g_base
, *b_base
;
5341 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5344 drm_modeset_lock_all(dev
);
5345 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5351 /* memcpy into gamma store */
5352 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5357 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5358 r_base
= crtc
->gamma_store
;
5359 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
5364 g_base
= r_base
+ size
;
5365 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
5370 b_base
= g_base
+ size
;
5371 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
5376 drm_modeset_unlock_all(dev
);
5381 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5384 * @file_priv: DRM file info
5386 * This schedules an asynchronous update on a given CRTC, called page flip.
5387 * Optionally a drm event is generated to signal the completion of the event.
5388 * Generic drivers cannot assume that a pageflip with changed framebuffer
5389 * properties (including driver specific metadata like tiling layout) will work,
5390 * but some drivers support e.g. pixel format changes through the pageflip
5393 * Called by the user via ioctl.
5396 * Zero on success, negative errno on failure.
5398 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
5399 void *data
, struct drm_file
*file_priv
)
5401 struct drm_mode_crtc_page_flip
*page_flip
= data
;
5402 struct drm_crtc
*crtc
;
5403 struct drm_framebuffer
*fb
= NULL
;
5404 struct drm_pending_vblank_event
*e
= NULL
;
5407 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
5408 page_flip
->reserved
!= 0)
5411 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
5414 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
5418 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
5419 if (crtc
->primary
->fb
== NULL
) {
5420 /* The framebuffer is currently unbound, presumably
5421 * due to a hotplug event, that userspace has not
5428 if (crtc
->funcs
->page_flip
== NULL
)
5431 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
5438 const struct drm_plane_state
*state
= crtc
->primary
->state
;
5440 ret
= check_src_coords(state
->src_x
, state
->src_y
,
5441 state
->src_w
, state
->src_h
, fb
);
5443 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
5448 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
5449 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5454 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5455 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
5460 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
5461 e
->event
.base
.length
= sizeof(e
->event
);
5462 e
->event
.user_data
= page_flip
->user_data
;
5463 ret
= drm_event_reserve_init(dev
, file_priv
, &e
->base
, &e
->event
.base
);
5470 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
5471 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
5473 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
)
5474 drm_event_cancel_free(dev
, &e
->base
);
5475 /* Keep the old fb, don't unref it. */
5476 crtc
->primary
->old_fb
= NULL
;
5478 crtc
->primary
->fb
= fb
;
5479 /* Unref only the old framebuffer. */
5485 drm_framebuffer_unreference(fb
);
5486 if (crtc
->primary
->old_fb
)
5487 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
5488 crtc
->primary
->old_fb
= NULL
;
5489 drm_modeset_unlock_crtc(crtc
);
5495 * drm_mode_config_reset - call ->reset callbacks
5498 * This functions calls all the crtc's, encoder's and connector's ->reset
5499 * callback. Drivers can use this in e.g. their driver load or resume code to
5500 * reset hardware and software state.
5502 void drm_mode_config_reset(struct drm_device
*dev
)
5504 struct drm_crtc
*crtc
;
5505 struct drm_plane
*plane
;
5506 struct drm_encoder
*encoder
;
5507 struct drm_connector
*connector
;
5509 drm_for_each_plane(plane
, dev
)
5510 if (plane
->funcs
->reset
)
5511 plane
->funcs
->reset(plane
);
5513 drm_for_each_crtc(crtc
, dev
)
5514 if (crtc
->funcs
->reset
)
5515 crtc
->funcs
->reset(crtc
);
5517 drm_for_each_encoder(encoder
, dev
)
5518 if (encoder
->funcs
->reset
)
5519 encoder
->funcs
->reset(encoder
);
5521 mutex_lock(&dev
->mode_config
.mutex
);
5522 drm_for_each_connector(connector
, dev
)
5523 if (connector
->funcs
->reset
)
5524 connector
->funcs
->reset(connector
);
5525 mutex_unlock(&dev
->mode_config
.mutex
);
5527 EXPORT_SYMBOL(drm_mode_config_reset
);
5530 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5533 * @file_priv: DRM file info
5535 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5536 * TTM or something else entirely) and returns the resulting buffer handle. This
5537 * handle can then be wrapped up into a framebuffer modeset object.
5539 * Note that userspace is not allowed to use such objects for render
5540 * acceleration - drivers must create their own private ioctls for such a use
5543 * Called by the user via ioctl.
5546 * Zero on success, negative errno on failure.
5548 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
5549 void *data
, struct drm_file
*file_priv
)
5551 struct drm_mode_create_dumb
*args
= data
;
5552 u32 cpp
, stride
, size
;
5554 if (!dev
->driver
->dumb_create
)
5556 if (!args
->width
|| !args
->height
|| !args
->bpp
)
5559 /* overflow checks for 32bit size calculations */
5560 /* NOTE: DIV_ROUND_UP() can overflow */
5561 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
5562 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
5564 stride
= cpp
* args
->width
;
5565 if (args
->height
> 0xffffffffU
/ stride
)
5568 /* test for wrap-around */
5569 size
= args
->height
* stride
;
5570 if (PAGE_ALIGN(size
) == 0)
5574 * handle, pitch and size are output parameters. Zero them out to
5575 * prevent drivers from accidentally using uninitialized data. Since
5576 * not all existing userspace is clearing these fields properly we
5577 * cannot reject IOCTL with garbage in them.
5583 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
5587 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5590 * @file_priv: DRM file info
5592 * Allocate an offset in the drm device node's address space to be able to
5593 * memory map a dumb buffer.
5595 * Called by the user via ioctl.
5598 * Zero on success, negative errno on failure.
5600 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
5601 void *data
, struct drm_file
*file_priv
)
5603 struct drm_mode_map_dumb
*args
= data
;
5605 /* call driver ioctl to get mmap offset */
5606 if (!dev
->driver
->dumb_map_offset
)
5609 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
5613 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5616 * @file_priv: DRM file info
5618 * This destroys the userspace handle for the given dumb backing storage buffer.
5619 * Since buffer objects must be reference counted in the kernel a buffer object
5620 * won't be immediately freed if a framebuffer modeset object still uses it.
5622 * Called by the user via ioctl.
5625 * Zero on success, negative errno on failure.
5627 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
5628 void *data
, struct drm_file
*file_priv
)
5630 struct drm_mode_destroy_dumb
*args
= data
;
5632 if (!dev
->driver
->dumb_destroy
)
5635 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
5639 * drm_rotation_simplify() - Try to simplify the rotation
5640 * @rotation: Rotation to be simplified
5641 * @supported_rotations: Supported rotations
5643 * Attempt to simplify the rotation to a form that is supported.
5644 * Eg. if the hardware supports everything except DRM_REFLECT_X
5645 * one could call this function like this:
5647 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5648 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5649 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5651 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5652 * transforms the hardware supports, this function may not
5653 * be able to produce a supported transform, so the caller should
5654 * check the result afterwards.
5656 unsigned int drm_rotation_simplify(unsigned int rotation
,
5657 unsigned int supported_rotations
)
5659 if (rotation
& ~supported_rotations
) {
5660 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5661 rotation
= (rotation
& DRM_REFLECT_MASK
) |
5662 BIT((ffs(rotation
& DRM_ROTATE_MASK
) + 1) % 4);
5667 EXPORT_SYMBOL(drm_rotation_simplify
);
5670 * drm_mode_config_init - initialize DRM mode_configuration structure
5673 * Initialize @dev's mode_config structure, used for tracking the graphics
5674 * configuration of @dev.
5676 * Since this initializes the modeset locks, no locking is possible. Which is no
5677 * problem, since this should happen single threaded at init time. It is the
5678 * driver's problem to ensure this guarantee.
5681 void drm_mode_config_init(struct drm_device
*dev
)
5683 mutex_init(&dev
->mode_config
.mutex
);
5684 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5685 mutex_init(&dev
->mode_config
.idr_mutex
);
5686 mutex_init(&dev
->mode_config
.fb_lock
);
5687 mutex_init(&dev
->mode_config
.blob_lock
);
5688 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5689 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5690 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5691 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5692 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5693 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5694 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5695 idr_init(&dev
->mode_config
.crtc_idr
);
5696 idr_init(&dev
->mode_config
.tile_idr
);
5697 ida_init(&dev
->mode_config
.connector_ida
);
5699 drm_modeset_lock_all(dev
);
5700 drm_mode_create_standard_properties(dev
);
5701 drm_modeset_unlock_all(dev
);
5703 /* Just to be sure */
5704 dev
->mode_config
.num_fb
= 0;
5705 dev
->mode_config
.num_connector
= 0;
5706 dev
->mode_config
.num_crtc
= 0;
5707 dev
->mode_config
.num_encoder
= 0;
5708 dev
->mode_config
.num_overlay_plane
= 0;
5709 dev
->mode_config
.num_total_plane
= 0;
5711 EXPORT_SYMBOL(drm_mode_config_init
);
5714 * drm_mode_config_cleanup - free up DRM mode_config info
5717 * Free up all the connectors and CRTCs associated with this DRM device, then
5718 * free up the framebuffers and associated buffer objects.
5720 * Note that since this /should/ happen single-threaded at driver/device
5721 * teardown time, no locking is required. It's the driver's job to ensure that
5722 * this guarantee actually holds true.
5724 * FIXME: cleanup any dangling user buffer objects too
5726 void drm_mode_config_cleanup(struct drm_device
*dev
)
5728 struct drm_connector
*connector
, *ot
;
5729 struct drm_crtc
*crtc
, *ct
;
5730 struct drm_encoder
*encoder
, *enct
;
5731 struct drm_framebuffer
*fb
, *fbt
;
5732 struct drm_property
*property
, *pt
;
5733 struct drm_property_blob
*blob
, *bt
;
5734 struct drm_plane
*plane
, *plt
;
5736 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5738 encoder
->funcs
->destroy(encoder
);
5741 list_for_each_entry_safe(connector
, ot
,
5742 &dev
->mode_config
.connector_list
, head
) {
5743 connector
->funcs
->destroy(connector
);
5746 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5748 drm_property_destroy(dev
, property
);
5751 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5753 plane
->funcs
->destroy(plane
);
5756 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5757 crtc
->funcs
->destroy(crtc
);
5760 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5762 drm_property_unreference_blob(blob
);
5766 * Single-threaded teardown context, so it's not required to grab the
5767 * fb_lock to protect against concurrent fb_list access. Contrary, it
5768 * would actually deadlock with the drm_framebuffer_cleanup function.
5770 * Also, if there are any framebuffers left, that's a driver leak now,
5771 * so politely WARN about this.
5773 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5774 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5775 drm_framebuffer_free(&fb
->base
.refcount
);
5778 ida_destroy(&dev
->mode_config
.connector_ida
);
5779 idr_destroy(&dev
->mode_config
.tile_idr
);
5780 idr_destroy(&dev
->mode_config
.crtc_idr
);
5781 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5783 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5785 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5786 unsigned int supported_rotations
)
5788 static const struct drm_prop_enum_list props
[] = {
5789 { DRM_ROTATE_0
, "rotate-0" },
5790 { DRM_ROTATE_90
, "rotate-90" },
5791 { DRM_ROTATE_180
, "rotate-180" },
5792 { DRM_ROTATE_270
, "rotate-270" },
5793 { DRM_REFLECT_X
, "reflect-x" },
5794 { DRM_REFLECT_Y
, "reflect-y" },
5797 return drm_property_create_bitmask(dev
, 0, "rotation",
5798 props
, ARRAY_SIZE(props
),
5799 supported_rotations
);
5801 EXPORT_SYMBOL(drm_mode_create_rotation_property
);
5806 * Tile groups are used to represent tiled monitors with a unique
5807 * integer identifier. Tiled monitors using DisplayID v1.3 have
5808 * a unique 8-byte handle, we store this in a tile group, so we
5809 * have a common identifier for all tiles in a monitor group.
5811 static void drm_tile_group_free(struct kref
*kref
)
5813 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
5814 struct drm_device
*dev
= tg
->dev
;
5815 mutex_lock(&dev
->mode_config
.idr_mutex
);
5816 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
5817 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5822 * drm_mode_put_tile_group - drop a reference to a tile group.
5824 * @tg: tile group to drop reference to.
5826 * drop reference to tile group and free if 0.
5828 void drm_mode_put_tile_group(struct drm_device
*dev
,
5829 struct drm_tile_group
*tg
)
5831 kref_put(&tg
->refcount
, drm_tile_group_free
);
5835 * drm_mode_get_tile_group - get a reference to an existing tile group
5837 * @topology: 8-bytes unique per monitor.
5839 * Use the unique bytes to get a reference to an existing tile group.
5842 * tile group or NULL if not found.
5844 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
5847 struct drm_tile_group
*tg
;
5849 mutex_lock(&dev
->mode_config
.idr_mutex
);
5850 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
5851 if (!memcmp(tg
->group_data
, topology
, 8)) {
5852 if (!kref_get_unless_zero(&tg
->refcount
))
5854 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5858 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5861 EXPORT_SYMBOL(drm_mode_get_tile_group
);
5864 * drm_mode_create_tile_group - create a tile group from a displayid description
5866 * @topology: 8-bytes unique per monitor.
5868 * Create a tile group for the unique monitor, and get a unique
5869 * identifier for the tile group.
5872 * new tile group or error.
5874 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
5877 struct drm_tile_group
*tg
;
5880 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
5882 return ERR_PTR(-ENOMEM
);
5884 kref_init(&tg
->refcount
);
5885 memcpy(tg
->group_data
, topology
, 8);
5888 mutex_lock(&dev
->mode_config
.idr_mutex
);
5889 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
5897 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5900 EXPORT_SYMBOL(drm_mode_create_tile_group
);
5903 * drm_crtc_enable_color_mgmt - enable color management properties
5905 * @degamma_lut_size: the size of the degamma lut (before CSC)
5906 * @has_ctm: whether to attach ctm_property for CSC matrix
5907 * @gamma_lut_size: the size of the gamma lut (after CSC)
5909 * This function lets the driver enable the color correction
5910 * properties on a CRTC. This includes 3 degamma, csc and gamma
5911 * properties that userspace can set and 2 size properties to inform
5912 * the userspace of the lut sizes. Each of the properties are
5913 * optional. The gamma and degamma properties are only attached if
5914 * their size is not 0 and ctm_property is only attached if has_ctm is
5917 void drm_crtc_enable_color_mgmt(struct drm_crtc
*crtc
,
5918 uint degamma_lut_size
,
5920 uint gamma_lut_size
)
5922 struct drm_device
*dev
= crtc
->dev
;
5923 struct drm_mode_config
*config
= &dev
->mode_config
;
5925 if (degamma_lut_size
) {
5926 drm_object_attach_property(&crtc
->base
,
5927 config
->degamma_lut_property
, 0);
5928 drm_object_attach_property(&crtc
->base
,
5929 config
->degamma_lut_size_property
,
5934 drm_object_attach_property(&crtc
->base
,
5935 config
->ctm_property
, 0);
5937 if (gamma_lut_size
) {
5938 drm_object_attach_property(&crtc
->base
,
5939 config
->gamma_lut_property
, 0);
5940 drm_object_attach_property(&crtc
->base
,
5941 config
->gamma_lut_size_property
,
5945 EXPORT_SYMBOL(drm_crtc_enable_color_mgmt
);