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 mutex_lock(&dev
->mode_config
.mutex
);
1126 drm_for_each_connector(connector
, dev
) {
1127 ret
= drm_connector_register(connector
);
1132 mutex_unlock(&dev
->mode_config
.mutex
);
1137 mutex_unlock(&dev
->mode_config
.mutex
);
1138 drm_connector_unregister_all(dev
);
1142 static int drm_encoder_register_all(struct drm_device
*dev
)
1144 struct drm_encoder
*encoder
;
1147 drm_for_each_encoder(encoder
, dev
) {
1148 if (encoder
->funcs
->late_register
)
1149 ret
= encoder
->funcs
->late_register(encoder
);
1157 static void drm_encoder_unregister_all(struct drm_device
*dev
)
1159 struct drm_encoder
*encoder
;
1161 drm_for_each_encoder(encoder
, dev
) {
1162 if (encoder
->funcs
->early_unregister
)
1163 encoder
->funcs
->early_unregister(encoder
);
1168 * drm_encoder_init - Init a preallocated encoder
1170 * @encoder: the encoder to init
1171 * @funcs: callbacks for this encoder
1172 * @encoder_type: user visible type of the encoder
1173 * @name: printf style format string for the encoder name, or NULL for default name
1175 * Initialises a preallocated encoder. Encoder should be
1176 * subclassed as part of driver encoder objects.
1179 * Zero on success, error code on failure.
1181 int drm_encoder_init(struct drm_device
*dev
,
1182 struct drm_encoder
*encoder
,
1183 const struct drm_encoder_funcs
*funcs
,
1184 int encoder_type
, const char *name
, ...)
1188 drm_modeset_lock_all(dev
);
1190 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1195 encoder
->encoder_type
= encoder_type
;
1196 encoder
->funcs
= funcs
;
1201 encoder
->name
= kvasprintf(GFP_KERNEL
, name
, ap
);
1204 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1205 drm_encoder_enum_list
[encoder_type
].name
,
1208 if (!encoder
->name
) {
1213 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1214 encoder
->index
= dev
->mode_config
.num_encoder
++;
1218 drm_mode_object_unregister(dev
, &encoder
->base
);
1221 drm_modeset_unlock_all(dev
);
1225 EXPORT_SYMBOL(drm_encoder_init
);
1228 * drm_encoder_cleanup - cleans up an initialised encoder
1229 * @encoder: encoder to cleanup
1231 * Cleans up the encoder but doesn't free the object.
1233 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1235 struct drm_device
*dev
= encoder
->dev
;
1237 /* Note that the encoder_list is considered to be static; should we
1238 * remove the drm_encoder at runtime we would have to decrement all
1239 * the indices on the drm_encoder after us in the encoder_list.
1242 drm_modeset_lock_all(dev
);
1243 drm_mode_object_unregister(dev
, &encoder
->base
);
1244 kfree(encoder
->name
);
1245 list_del(&encoder
->head
);
1246 dev
->mode_config
.num_encoder
--;
1247 drm_modeset_unlock_all(dev
);
1249 memset(encoder
, 0, sizeof(*encoder
));
1251 EXPORT_SYMBOL(drm_encoder_cleanup
);
1253 static unsigned int drm_num_planes(struct drm_device
*dev
)
1255 unsigned int num
= 0;
1256 struct drm_plane
*tmp
;
1258 drm_for_each_plane(tmp
, dev
) {
1266 * drm_universal_plane_init - Initialize a new universal plane object
1268 * @plane: plane object to init
1269 * @possible_crtcs: bitmask of possible CRTCs
1270 * @funcs: callbacks for the new plane
1271 * @formats: array of supported formats (%DRM_FORMAT_*)
1272 * @format_count: number of elements in @formats
1273 * @type: type of plane (overlay, primary, cursor)
1274 * @name: printf style format string for the plane name, or NULL for default name
1276 * Initializes a plane object of type @type.
1279 * Zero on success, error code on failure.
1281 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1282 unsigned long possible_crtcs
,
1283 const struct drm_plane_funcs
*funcs
,
1284 const uint32_t *formats
, unsigned int format_count
,
1285 enum drm_plane_type type
,
1286 const char *name
, ...)
1288 struct drm_mode_config
*config
= &dev
->mode_config
;
1291 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1295 drm_modeset_lock_init(&plane
->mutex
);
1297 plane
->base
.properties
= &plane
->properties
;
1299 plane
->funcs
= funcs
;
1300 plane
->format_types
= kmalloc_array(format_count
, sizeof(uint32_t),
1302 if (!plane
->format_types
) {
1303 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1304 drm_mode_object_unregister(dev
, &plane
->base
);
1312 plane
->name
= kvasprintf(GFP_KERNEL
, name
, ap
);
1315 plane
->name
= kasprintf(GFP_KERNEL
, "plane-%d",
1316 drm_num_planes(dev
));
1319 kfree(plane
->format_types
);
1320 drm_mode_object_unregister(dev
, &plane
->base
);
1324 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1325 plane
->format_count
= format_count
;
1326 plane
->possible_crtcs
= possible_crtcs
;
1329 list_add_tail(&plane
->head
, &config
->plane_list
);
1330 plane
->index
= config
->num_total_plane
++;
1331 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1332 config
->num_overlay_plane
++;
1334 drm_object_attach_property(&plane
->base
,
1335 config
->plane_type_property
,
1338 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
1339 drm_object_attach_property(&plane
->base
, config
->prop_fb_id
, 0);
1340 drm_object_attach_property(&plane
->base
, config
->prop_crtc_id
, 0);
1341 drm_object_attach_property(&plane
->base
, config
->prop_crtc_x
, 0);
1342 drm_object_attach_property(&plane
->base
, config
->prop_crtc_y
, 0);
1343 drm_object_attach_property(&plane
->base
, config
->prop_crtc_w
, 0);
1344 drm_object_attach_property(&plane
->base
, config
->prop_crtc_h
, 0);
1345 drm_object_attach_property(&plane
->base
, config
->prop_src_x
, 0);
1346 drm_object_attach_property(&plane
->base
, config
->prop_src_y
, 0);
1347 drm_object_attach_property(&plane
->base
, config
->prop_src_w
, 0);
1348 drm_object_attach_property(&plane
->base
, config
->prop_src_h
, 0);
1353 EXPORT_SYMBOL(drm_universal_plane_init
);
1355 static int drm_plane_register_all(struct drm_device
*dev
)
1357 struct drm_plane
*plane
;
1360 drm_for_each_plane(plane
, dev
) {
1361 if (plane
->funcs
->late_register
)
1362 ret
= plane
->funcs
->late_register(plane
);
1370 static void drm_plane_unregister_all(struct drm_device
*dev
)
1372 struct drm_plane
*plane
;
1374 drm_for_each_plane(plane
, dev
) {
1375 if (plane
->funcs
->early_unregister
)
1376 plane
->funcs
->early_unregister(plane
);
1381 * drm_plane_init - Initialize a legacy plane
1383 * @plane: plane object to init
1384 * @possible_crtcs: bitmask of possible CRTCs
1385 * @funcs: callbacks for the new plane
1386 * @formats: array of supported formats (%DRM_FORMAT_*)
1387 * @format_count: number of elements in @formats
1388 * @is_primary: plane type (primary vs overlay)
1390 * Legacy API to initialize a DRM plane.
1392 * New drivers should call drm_universal_plane_init() instead.
1395 * Zero on success, error code on failure.
1397 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1398 unsigned long possible_crtcs
,
1399 const struct drm_plane_funcs
*funcs
,
1400 const uint32_t *formats
, unsigned int format_count
,
1403 enum drm_plane_type type
;
1405 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1406 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1407 formats
, format_count
, type
, NULL
);
1409 EXPORT_SYMBOL(drm_plane_init
);
1412 * drm_plane_cleanup - Clean up the core plane usage
1413 * @plane: plane to cleanup
1415 * This function cleans up @plane and removes it from the DRM mode setting
1416 * core. Note that the function does *not* free the plane structure itself,
1417 * this is the responsibility of the caller.
1419 void drm_plane_cleanup(struct drm_plane
*plane
)
1421 struct drm_device
*dev
= plane
->dev
;
1423 drm_modeset_lock_all(dev
);
1424 kfree(plane
->format_types
);
1425 drm_mode_object_unregister(dev
, &plane
->base
);
1427 BUG_ON(list_empty(&plane
->head
));
1429 /* Note that the plane_list is considered to be static; should we
1430 * remove the drm_plane at runtime we would have to decrement all
1431 * the indices on the drm_plane after us in the plane_list.
1434 list_del(&plane
->head
);
1435 dev
->mode_config
.num_total_plane
--;
1436 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1437 dev
->mode_config
.num_overlay_plane
--;
1438 drm_modeset_unlock_all(dev
);
1440 WARN_ON(plane
->state
&& !plane
->funcs
->atomic_destroy_state
);
1441 if (plane
->state
&& plane
->funcs
->atomic_destroy_state
)
1442 plane
->funcs
->atomic_destroy_state(plane
, plane
->state
);
1446 memset(plane
, 0, sizeof(*plane
));
1448 EXPORT_SYMBOL(drm_plane_cleanup
);
1451 * drm_plane_from_index - find the registered plane at an index
1453 * @idx: index of registered plane to find for
1455 * Given a plane index, return the registered plane from DRM device's
1456 * list of planes with matching index.
1459 drm_plane_from_index(struct drm_device
*dev
, int idx
)
1461 struct drm_plane
*plane
;
1463 drm_for_each_plane(plane
, dev
)
1464 if (idx
== plane
->index
)
1469 EXPORT_SYMBOL(drm_plane_from_index
);
1472 * drm_plane_force_disable - Forcibly disable a plane
1473 * @plane: plane to disable
1475 * Forces the plane to be disabled.
1477 * Used when the plane's current framebuffer is destroyed,
1478 * and when restoring fbdev mode.
1480 void drm_plane_force_disable(struct drm_plane
*plane
)
1487 plane
->old_fb
= plane
->fb
;
1488 ret
= plane
->funcs
->disable_plane(plane
);
1490 DRM_ERROR("failed to disable plane with busy fb\n");
1491 plane
->old_fb
= NULL
;
1494 /* disconnect the plane from the fb and crtc: */
1495 drm_framebuffer_unreference(plane
->old_fb
);
1496 plane
->old_fb
= NULL
;
1500 EXPORT_SYMBOL(drm_plane_force_disable
);
1502 int drm_modeset_register_all(struct drm_device
*dev
)
1506 ret
= drm_plane_register_all(dev
);
1510 ret
= drm_crtc_register_all(dev
);
1514 ret
= drm_encoder_register_all(dev
);
1518 ret
= drm_connector_register_all(dev
);
1525 drm_encoder_unregister_all(dev
);
1527 drm_crtc_unregister_all(dev
);
1529 drm_plane_unregister_all(dev
);
1534 void drm_modeset_unregister_all(struct drm_device
*dev
)
1536 drm_connector_unregister_all(dev
);
1537 drm_encoder_unregister_all(dev
);
1538 drm_crtc_unregister_all(dev
);
1539 drm_plane_unregister_all(dev
);
1542 static int drm_mode_create_standard_properties(struct drm_device
*dev
)
1544 struct drm_property
*prop
;
1547 * Standard properties (apply to all connectors)
1549 prop
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1550 DRM_MODE_PROP_IMMUTABLE
,
1554 dev
->mode_config
.edid_property
= prop
;
1556 prop
= drm_property_create_enum(dev
, 0,
1557 "DPMS", drm_dpms_enum_list
,
1558 ARRAY_SIZE(drm_dpms_enum_list
));
1561 dev
->mode_config
.dpms_property
= prop
;
1563 prop
= drm_property_create(dev
,
1564 DRM_MODE_PROP_BLOB
|
1565 DRM_MODE_PROP_IMMUTABLE
,
1569 dev
->mode_config
.path_property
= prop
;
1571 prop
= drm_property_create(dev
,
1572 DRM_MODE_PROP_BLOB
|
1573 DRM_MODE_PROP_IMMUTABLE
,
1577 dev
->mode_config
.tile_property
= prop
;
1579 prop
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1580 "type", drm_plane_type_enum_list
,
1581 ARRAY_SIZE(drm_plane_type_enum_list
));
1584 dev
->mode_config
.plane_type_property
= prop
;
1586 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1587 "SRC_X", 0, UINT_MAX
);
1590 dev
->mode_config
.prop_src_x
= prop
;
1592 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1593 "SRC_Y", 0, UINT_MAX
);
1596 dev
->mode_config
.prop_src_y
= prop
;
1598 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1599 "SRC_W", 0, UINT_MAX
);
1602 dev
->mode_config
.prop_src_w
= prop
;
1604 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1605 "SRC_H", 0, UINT_MAX
);
1608 dev
->mode_config
.prop_src_h
= prop
;
1610 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1611 "CRTC_X", INT_MIN
, INT_MAX
);
1614 dev
->mode_config
.prop_crtc_x
= prop
;
1616 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1617 "CRTC_Y", INT_MIN
, INT_MAX
);
1620 dev
->mode_config
.prop_crtc_y
= prop
;
1622 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1623 "CRTC_W", 0, INT_MAX
);
1626 dev
->mode_config
.prop_crtc_w
= prop
;
1628 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1629 "CRTC_H", 0, INT_MAX
);
1632 dev
->mode_config
.prop_crtc_h
= prop
;
1634 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1635 "FB_ID", DRM_MODE_OBJECT_FB
);
1638 dev
->mode_config
.prop_fb_id
= prop
;
1640 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1641 "CRTC_ID", DRM_MODE_OBJECT_CRTC
);
1644 dev
->mode_config
.prop_crtc_id
= prop
;
1646 prop
= drm_property_create_bool(dev
, DRM_MODE_PROP_ATOMIC
,
1650 dev
->mode_config
.prop_active
= prop
;
1652 prop
= drm_property_create(dev
,
1653 DRM_MODE_PROP_ATOMIC
| DRM_MODE_PROP_BLOB
,
1657 dev
->mode_config
.prop_mode_id
= prop
;
1659 prop
= drm_property_create(dev
,
1664 dev
->mode_config
.degamma_lut_property
= prop
;
1666 prop
= drm_property_create_range(dev
,
1667 DRM_MODE_PROP_IMMUTABLE
,
1668 "DEGAMMA_LUT_SIZE", 0, UINT_MAX
);
1671 dev
->mode_config
.degamma_lut_size_property
= prop
;
1673 prop
= drm_property_create(dev
,
1678 dev
->mode_config
.ctm_property
= prop
;
1680 prop
= drm_property_create(dev
,
1685 dev
->mode_config
.gamma_lut_property
= prop
;
1687 prop
= drm_property_create_range(dev
,
1688 DRM_MODE_PROP_IMMUTABLE
,
1689 "GAMMA_LUT_SIZE", 0, UINT_MAX
);
1692 dev
->mode_config
.gamma_lut_size_property
= prop
;
1698 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1701 * Called by a driver the first time a DVI-I connector is made.
1703 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1705 struct drm_property
*dvi_i_selector
;
1706 struct drm_property
*dvi_i_subconnector
;
1708 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1712 drm_property_create_enum(dev
, 0,
1713 "select subconnector",
1714 drm_dvi_i_select_enum_list
,
1715 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1716 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1718 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1720 drm_dvi_i_subconnector_enum_list
,
1721 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1722 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1726 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1729 * drm_create_tv_properties - create TV specific connector properties
1731 * @num_modes: number of different TV formats (modes) supported
1732 * @modes: array of pointers to strings containing name of each format
1734 * Called by a driver's TV initialization routine, this function creates
1735 * the TV specific connector properties for a given device. Caller is
1736 * responsible for allocating a list of format names and passing them to
1739 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1740 unsigned int num_modes
,
1741 const char * const modes
[])
1743 struct drm_property
*tv_selector
;
1744 struct drm_property
*tv_subconnector
;
1747 if (dev
->mode_config
.tv_select_subconnector_property
)
1751 * Basic connector properties
1753 tv_selector
= drm_property_create_enum(dev
, 0,
1754 "select subconnector",
1755 drm_tv_select_enum_list
,
1756 ARRAY_SIZE(drm_tv_select_enum_list
));
1760 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1763 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1765 drm_tv_subconnector_enum_list
,
1766 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1767 if (!tv_subconnector
)
1769 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1772 * Other, TV specific properties: margins & TV modes.
1774 dev
->mode_config
.tv_left_margin_property
=
1775 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1776 if (!dev
->mode_config
.tv_left_margin_property
)
1779 dev
->mode_config
.tv_right_margin_property
=
1780 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1781 if (!dev
->mode_config
.tv_right_margin_property
)
1784 dev
->mode_config
.tv_top_margin_property
=
1785 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1786 if (!dev
->mode_config
.tv_top_margin_property
)
1789 dev
->mode_config
.tv_bottom_margin_property
=
1790 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1791 if (!dev
->mode_config
.tv_bottom_margin_property
)
1794 dev
->mode_config
.tv_mode_property
=
1795 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1797 if (!dev
->mode_config
.tv_mode_property
)
1800 for (i
= 0; i
< num_modes
; i
++)
1801 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1804 dev
->mode_config
.tv_brightness_property
=
1805 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1806 if (!dev
->mode_config
.tv_brightness_property
)
1809 dev
->mode_config
.tv_contrast_property
=
1810 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1811 if (!dev
->mode_config
.tv_contrast_property
)
1814 dev
->mode_config
.tv_flicker_reduction_property
=
1815 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1816 if (!dev
->mode_config
.tv_flicker_reduction_property
)
1819 dev
->mode_config
.tv_overscan_property
=
1820 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1821 if (!dev
->mode_config
.tv_overscan_property
)
1824 dev
->mode_config
.tv_saturation_property
=
1825 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1826 if (!dev
->mode_config
.tv_saturation_property
)
1829 dev
->mode_config
.tv_hue_property
=
1830 drm_property_create_range(dev
, 0, "hue", 0, 100);
1831 if (!dev
->mode_config
.tv_hue_property
)
1838 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1841 * drm_mode_create_scaling_mode_property - create scaling mode property
1844 * Called by a driver the first time it's needed, must be attached to desired
1847 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1849 struct drm_property
*scaling_mode
;
1851 if (dev
->mode_config
.scaling_mode_property
)
1855 drm_property_create_enum(dev
, 0, "scaling mode",
1856 drm_scaling_mode_enum_list
,
1857 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1859 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1863 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1866 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1869 * Called by a driver the first time it's needed, must be attached to desired
1873 * Zero on success, negative errno on failure.
1875 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1877 if (dev
->mode_config
.aspect_ratio_property
)
1880 dev
->mode_config
.aspect_ratio_property
=
1881 drm_property_create_enum(dev
, 0, "aspect ratio",
1882 drm_aspect_ratio_enum_list
,
1883 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1885 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1890 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1893 * drm_mode_create_dirty_property - create dirty property
1896 * Called by a driver the first time it's needed, must be attached to desired
1899 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1901 struct drm_property
*dirty_info
;
1903 if (dev
->mode_config
.dirty_info_property
)
1907 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1909 drm_dirty_info_enum_list
,
1910 ARRAY_SIZE(drm_dirty_info_enum_list
));
1911 dev
->mode_config
.dirty_info_property
= dirty_info
;
1915 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1918 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1921 * Create the the suggested x/y offset property for connectors.
1923 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1925 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1928 dev
->mode_config
.suggested_x_property
=
1929 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1931 dev
->mode_config
.suggested_y_property
=
1932 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1934 if (dev
->mode_config
.suggested_x_property
== NULL
||
1935 dev
->mode_config
.suggested_y_property
== NULL
)
1939 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1942 * drm_mode_getresources - get graphics configuration
1943 * @dev: drm device for the ioctl
1944 * @data: data pointer for the ioctl
1945 * @file_priv: drm file for the ioctl call
1947 * Construct a set of configuration description structures and return
1948 * them to the user, including CRTC, connector and framebuffer configuration.
1950 * Called by the user via ioctl.
1953 * Zero on success, negative errno on failure.
1955 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1956 struct drm_file
*file_priv
)
1958 struct drm_mode_card_res
*card_res
= data
;
1959 struct list_head
*lh
;
1960 struct drm_framebuffer
*fb
;
1961 struct drm_connector
*connector
;
1962 struct drm_crtc
*crtc
;
1963 struct drm_encoder
*encoder
;
1965 int connector_count
= 0;
1968 int encoder_count
= 0;
1970 uint32_t __user
*fb_id
;
1971 uint32_t __user
*crtc_id
;
1972 uint32_t __user
*connector_id
;
1973 uint32_t __user
*encoder_id
;
1975 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1979 mutex_lock(&file_priv
->fbs_lock
);
1981 * For the non-control nodes we need to limit the list of resources
1982 * by IDs in the group list for this node
1984 list_for_each(lh
, &file_priv
->fbs
)
1987 /* handle this in 4 parts */
1989 if (card_res
->count_fbs
>= fb_count
) {
1991 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1992 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1993 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1994 mutex_unlock(&file_priv
->fbs_lock
);
2000 card_res
->count_fbs
= fb_count
;
2001 mutex_unlock(&file_priv
->fbs_lock
);
2003 /* mode_config.mutex protects the connector list against e.g. DP MST
2004 * connector hot-adding. CRTC/Plane lists are invariant. */
2005 mutex_lock(&dev
->mode_config
.mutex
);
2006 drm_for_each_crtc(crtc
, dev
)
2009 drm_for_each_connector(connector
, dev
)
2012 drm_for_each_encoder(encoder
, dev
)
2015 card_res
->max_height
= dev
->mode_config
.max_height
;
2016 card_res
->min_height
= dev
->mode_config
.min_height
;
2017 card_res
->max_width
= dev
->mode_config
.max_width
;
2018 card_res
->min_width
= dev
->mode_config
.min_width
;
2021 if (card_res
->count_crtcs
>= crtc_count
) {
2023 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
2024 drm_for_each_crtc(crtc
, dev
) {
2025 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
2032 card_res
->count_crtcs
= crtc_count
;
2035 if (card_res
->count_encoders
>= encoder_count
) {
2037 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
2038 drm_for_each_encoder(encoder
, dev
) {
2039 if (put_user(encoder
->base
.id
, encoder_id
+
2047 card_res
->count_encoders
= encoder_count
;
2050 if (card_res
->count_connectors
>= connector_count
) {
2052 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
2053 drm_for_each_connector(connector
, dev
) {
2054 if (put_user(connector
->base
.id
,
2055 connector_id
+ copied
)) {
2062 card_res
->count_connectors
= connector_count
;
2065 mutex_unlock(&dev
->mode_config
.mutex
);
2070 * drm_mode_getcrtc - get CRTC configuration
2071 * @dev: drm device for the ioctl
2072 * @data: data pointer for the ioctl
2073 * @file_priv: drm file for the ioctl call
2075 * Construct a CRTC configuration structure to return to the user.
2077 * Called by the user via ioctl.
2080 * Zero on success, negative errno on failure.
2082 int drm_mode_getcrtc(struct drm_device
*dev
,
2083 void *data
, struct drm_file
*file_priv
)
2085 struct drm_mode_crtc
*crtc_resp
= data
;
2086 struct drm_crtc
*crtc
;
2088 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2091 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
2095 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
2096 crtc_resp
->gamma_size
= crtc
->gamma_size
;
2097 if (crtc
->primary
->fb
)
2098 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
2100 crtc_resp
->fb_id
= 0;
2103 crtc_resp
->x
= crtc
->primary
->state
->src_x
>> 16;
2104 crtc_resp
->y
= crtc
->primary
->state
->src_y
>> 16;
2105 if (crtc
->state
->enable
) {
2106 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->state
->mode
);
2107 crtc_resp
->mode_valid
= 1;
2110 crtc_resp
->mode_valid
= 0;
2113 crtc_resp
->x
= crtc
->x
;
2114 crtc_resp
->y
= crtc
->y
;
2115 if (crtc
->enabled
) {
2116 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
2117 crtc_resp
->mode_valid
= 1;
2120 crtc_resp
->mode_valid
= 0;
2123 drm_modeset_unlock_crtc(crtc
);
2128 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
2129 const struct drm_file
*file_priv
)
2132 * If user-space hasn't configured the driver to expose the stereo 3D
2133 * modes, don't expose them.
2135 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
2141 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
2143 /* For atomic drivers only state objects are synchronously updated and
2144 * protected by modeset locks, so check those first. */
2145 if (connector
->state
)
2146 return connector
->state
->best_encoder
;
2147 return connector
->encoder
;
2150 /* helper for getconnector and getproperties ioctls */
2151 static int get_properties(struct drm_mode_object
*obj
, bool atomic
,
2152 uint32_t __user
*prop_ptr
, uint64_t __user
*prop_values
,
2153 uint32_t *arg_count_props
)
2158 props_count
= obj
->properties
->count
;
2160 props_count
-= obj
->properties
->atomic_count
;
2162 if ((*arg_count_props
>= props_count
) && props_count
) {
2163 for (i
= 0, copied
= 0; copied
< props_count
; i
++) {
2164 struct drm_property
*prop
= obj
->properties
->properties
[i
];
2167 if ((prop
->flags
& DRM_MODE_PROP_ATOMIC
) && !atomic
)
2170 ret
= drm_object_property_get_value(obj
, prop
, &val
);
2174 if (put_user(prop
->base
.id
, prop_ptr
+ copied
))
2177 if (put_user(val
, prop_values
+ copied
))
2183 *arg_count_props
= props_count
;
2189 * drm_mode_getconnector - get connector configuration
2190 * @dev: drm device for the ioctl
2191 * @data: data pointer for the ioctl
2192 * @file_priv: drm file for the ioctl call
2194 * Construct a connector configuration structure to return to the user.
2196 * Called by the user via ioctl.
2199 * Zero on success, negative errno on failure.
2201 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
2202 struct drm_file
*file_priv
)
2204 struct drm_mode_get_connector
*out_resp
= data
;
2205 struct drm_connector
*connector
;
2206 struct drm_encoder
*encoder
;
2207 struct drm_display_mode
*mode
;
2209 int encoders_count
= 0;
2213 struct drm_mode_modeinfo u_mode
;
2214 struct drm_mode_modeinfo __user
*mode_ptr
;
2215 uint32_t __user
*encoder_ptr
;
2217 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2220 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
2222 mutex_lock(&dev
->mode_config
.mutex
);
2224 connector
= drm_connector_lookup(dev
, out_resp
->connector_id
);
2230 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++)
2231 if (connector
->encoder_ids
[i
] != 0)
2234 if (out_resp
->count_modes
== 0) {
2235 connector
->funcs
->fill_modes(connector
,
2236 dev
->mode_config
.max_width
,
2237 dev
->mode_config
.max_height
);
2240 /* delayed so we get modes regardless of pre-fill_modes state */
2241 list_for_each_entry(mode
, &connector
->modes
, head
)
2242 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2245 out_resp
->connector_id
= connector
->base
.id
;
2246 out_resp
->connector_type
= connector
->connector_type
;
2247 out_resp
->connector_type_id
= connector
->connector_type_id
;
2248 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2249 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2250 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2251 out_resp
->connection
= connector
->status
;
2253 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2254 encoder
= drm_connector_get_encoder(connector
);
2256 out_resp
->encoder_id
= encoder
->base
.id
;
2258 out_resp
->encoder_id
= 0;
2261 * This ioctl is called twice, once to determine how much space is
2262 * needed, and the 2nd time to fill it.
2264 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2266 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2267 list_for_each_entry(mode
, &connector
->modes
, head
) {
2268 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2271 drm_mode_convert_to_umode(&u_mode
, mode
);
2272 if (copy_to_user(mode_ptr
+ copied
,
2273 &u_mode
, sizeof(u_mode
))) {
2280 out_resp
->count_modes
= mode_count
;
2282 ret
= get_properties(&connector
->base
, file_priv
->atomic
,
2283 (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
),
2284 (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
),
2285 &out_resp
->count_props
);
2289 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2291 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2292 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2293 if (connector
->encoder_ids
[i
] != 0) {
2294 if (put_user(connector
->encoder_ids
[i
],
2295 encoder_ptr
+ copied
)) {
2303 out_resp
->count_encoders
= encoders_count
;
2306 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2308 drm_connector_unreference(connector
);
2310 mutex_unlock(&dev
->mode_config
.mutex
);
2315 static struct drm_crtc
*drm_encoder_get_crtc(struct drm_encoder
*encoder
)
2317 struct drm_connector
*connector
;
2318 struct drm_device
*dev
= encoder
->dev
;
2319 bool uses_atomic
= false;
2321 /* For atomic drivers only state objects are synchronously updated and
2322 * protected by modeset locks, so check those first. */
2323 drm_for_each_connector(connector
, dev
) {
2324 if (!connector
->state
)
2329 if (connector
->state
->best_encoder
!= encoder
)
2332 return connector
->state
->crtc
;
2335 /* Don't return stale data (e.g. pending async disable). */
2339 return encoder
->crtc
;
2343 * drm_mode_getencoder - get encoder configuration
2344 * @dev: drm device for the ioctl
2345 * @data: data pointer for the ioctl
2346 * @file_priv: drm file for the ioctl call
2348 * Construct a encoder configuration structure to return to the user.
2350 * Called by the user via ioctl.
2353 * Zero on success, negative errno on failure.
2355 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2356 struct drm_file
*file_priv
)
2358 struct drm_mode_get_encoder
*enc_resp
= data
;
2359 struct drm_encoder
*encoder
;
2360 struct drm_crtc
*crtc
;
2362 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2365 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2369 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2370 crtc
= drm_encoder_get_crtc(encoder
);
2372 enc_resp
->crtc_id
= crtc
->base
.id
;
2374 enc_resp
->crtc_id
= 0;
2375 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2377 enc_resp
->encoder_type
= encoder
->encoder_type
;
2378 enc_resp
->encoder_id
= encoder
->base
.id
;
2379 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2380 enc_resp
->possible_clones
= encoder
->possible_clones
;
2386 * drm_mode_getplane_res - enumerate all plane resources
2389 * @file_priv: DRM file info
2391 * Construct a list of plane ids to return to the user.
2393 * Called by the user via ioctl.
2396 * Zero on success, negative errno on failure.
2398 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2399 struct drm_file
*file_priv
)
2401 struct drm_mode_get_plane_res
*plane_resp
= data
;
2402 struct drm_mode_config
*config
;
2403 struct drm_plane
*plane
;
2404 uint32_t __user
*plane_ptr
;
2406 unsigned num_planes
;
2408 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2411 config
= &dev
->mode_config
;
2413 if (file_priv
->universal_planes
)
2414 num_planes
= config
->num_total_plane
;
2416 num_planes
= config
->num_overlay_plane
;
2419 * This ioctl is called twice, once to determine how much space is
2420 * needed, and the 2nd time to fill it.
2423 (plane_resp
->count_planes
>= num_planes
)) {
2424 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2426 /* Plane lists are invariant, no locking needed. */
2427 drm_for_each_plane(plane
, dev
) {
2429 * Unless userspace set the 'universal planes'
2430 * capability bit, only advertise overlays.
2432 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2433 !file_priv
->universal_planes
)
2436 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2441 plane_resp
->count_planes
= num_planes
;
2447 * drm_mode_getplane - get plane configuration
2450 * @file_priv: DRM file info
2452 * Construct a plane configuration structure to return to the user.
2454 * Called by the user via ioctl.
2457 * Zero on success, negative errno on failure.
2459 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2460 struct drm_file
*file_priv
)
2462 struct drm_mode_get_plane
*plane_resp
= data
;
2463 struct drm_plane
*plane
;
2464 uint32_t __user
*format_ptr
;
2466 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2469 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2473 drm_modeset_lock(&plane
->mutex
, NULL
);
2475 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2477 plane_resp
->crtc_id
= 0;
2480 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2482 plane_resp
->fb_id
= 0;
2483 drm_modeset_unlock(&plane
->mutex
);
2485 plane_resp
->plane_id
= plane
->base
.id
;
2486 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2487 plane_resp
->gamma_size
= 0;
2490 * This ioctl is called twice, once to determine how much space is
2491 * needed, and the 2nd time to fill it.
2493 if (plane
->format_count
&&
2494 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2495 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2496 if (copy_to_user(format_ptr
,
2497 plane
->format_types
,
2498 sizeof(uint32_t) * plane
->format_count
)) {
2502 plane_resp
->count_format_types
= plane
->format_count
;
2508 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2509 * @plane: plane to check for format support
2510 * @format: the pixel format
2513 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2516 int drm_plane_check_pixel_format(const struct drm_plane
*plane
, u32 format
)
2520 for (i
= 0; i
< plane
->format_count
; i
++) {
2521 if (format
== plane
->format_types
[i
])
2528 static int check_src_coords(uint32_t src_x
, uint32_t src_y
,
2529 uint32_t src_w
, uint32_t src_h
,
2530 const struct drm_framebuffer
*fb
)
2532 unsigned int fb_width
, fb_height
;
2534 fb_width
= fb
->width
<< 16;
2535 fb_height
= fb
->height
<< 16;
2537 /* Make sure source coordinates are inside the fb. */
2538 if (src_w
> fb_width
||
2539 src_x
> fb_width
- src_w
||
2540 src_h
> fb_height
||
2541 src_y
> fb_height
- src_h
) {
2542 DRM_DEBUG_KMS("Invalid source coordinates "
2543 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2544 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2545 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2546 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2547 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2555 * setplane_internal - setplane handler for internal callers
2557 * Note that we assume an extra reference has already been taken on fb. If the
2558 * update fails, this reference will be dropped before return; if it succeeds,
2559 * the previous framebuffer (if any) will be unreferenced instead.
2561 * src_{x,y,w,h} are provided in 16.16 fixed point format
2563 static int __setplane_internal(struct drm_plane
*plane
,
2564 struct drm_crtc
*crtc
,
2565 struct drm_framebuffer
*fb
,
2566 int32_t crtc_x
, int32_t crtc_y
,
2567 uint32_t crtc_w
, uint32_t crtc_h
,
2568 /* src_{x,y,w,h} values are 16.16 fixed point */
2569 uint32_t src_x
, uint32_t src_y
,
2570 uint32_t src_w
, uint32_t src_h
)
2574 /* No fb means shut it down */
2576 plane
->old_fb
= plane
->fb
;
2577 ret
= plane
->funcs
->disable_plane(plane
);
2582 plane
->old_fb
= NULL
;
2587 /* Check whether this plane is usable on this CRTC */
2588 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2589 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2594 /* Check whether this plane supports the fb pixel format. */
2595 ret
= drm_plane_check_pixel_format(plane
, fb
->pixel_format
);
2597 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2598 drm_get_format_name(fb
->pixel_format
));
2602 /* Give drivers some help against integer overflows */
2603 if (crtc_w
> INT_MAX
||
2604 crtc_x
> INT_MAX
- (int32_t) crtc_w
||
2606 crtc_y
> INT_MAX
- (int32_t) crtc_h
) {
2607 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2608 crtc_w
, crtc_h
, crtc_x
, crtc_y
);
2613 ret
= check_src_coords(src_x
, src_y
, src_w
, src_h
, fb
);
2617 plane
->old_fb
= plane
->fb
;
2618 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2619 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2620 src_x
, src_y
, src_w
, src_h
);
2626 plane
->old_fb
= NULL
;
2631 drm_framebuffer_unreference(fb
);
2633 drm_framebuffer_unreference(plane
->old_fb
);
2634 plane
->old_fb
= NULL
;
2639 static int setplane_internal(struct drm_plane
*plane
,
2640 struct drm_crtc
*crtc
,
2641 struct drm_framebuffer
*fb
,
2642 int32_t crtc_x
, int32_t crtc_y
,
2643 uint32_t crtc_w
, uint32_t crtc_h
,
2644 /* src_{x,y,w,h} values are 16.16 fixed point */
2645 uint32_t src_x
, uint32_t src_y
,
2646 uint32_t src_w
, uint32_t src_h
)
2650 drm_modeset_lock_all(plane
->dev
);
2651 ret
= __setplane_internal(plane
, crtc
, fb
,
2652 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2653 src_x
, src_y
, src_w
, src_h
);
2654 drm_modeset_unlock_all(plane
->dev
);
2660 * drm_mode_setplane - configure a plane's configuration
2662 * @data: ioctl data*
2663 * @file_priv: DRM file info
2665 * Set plane configuration, including placement, fb, scaling, and other factors.
2666 * Or pass a NULL fb to disable (planes may be disabled without providing a
2670 * Zero on success, negative errno on failure.
2672 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2673 struct drm_file
*file_priv
)
2675 struct drm_mode_set_plane
*plane_req
= data
;
2676 struct drm_plane
*plane
;
2677 struct drm_crtc
*crtc
= NULL
;
2678 struct drm_framebuffer
*fb
= NULL
;
2680 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2684 * First, find the plane, crtc, and fb objects. If not available,
2685 * we don't bother to call the driver.
2687 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
2689 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2690 plane_req
->plane_id
);
2694 if (plane_req
->fb_id
) {
2695 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2697 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2702 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
2704 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2705 plane_req
->crtc_id
);
2711 * setplane_internal will take care of deref'ing either the old or new
2712 * framebuffer depending on success.
2714 return setplane_internal(plane
, crtc
, fb
,
2715 plane_req
->crtc_x
, plane_req
->crtc_y
,
2716 plane_req
->crtc_w
, plane_req
->crtc_h
,
2717 plane_req
->src_x
, plane_req
->src_y
,
2718 plane_req
->src_w
, plane_req
->src_h
);
2722 * drm_mode_set_config_internal - helper to call ->set_config
2723 * @set: modeset config to set
2725 * This is a little helper to wrap internal calls to the ->set_config driver
2726 * interface. The only thing it adds is correct refcounting dance.
2729 * Zero on success, negative errno on failure.
2731 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2733 struct drm_crtc
*crtc
= set
->crtc
;
2734 struct drm_framebuffer
*fb
;
2735 struct drm_crtc
*tmp
;
2739 * NOTE: ->set_config can also disable other crtcs (if we steal all
2740 * connectors from it), hence we need to refcount the fbs across all
2741 * crtcs. Atomic modeset will have saner semantics ...
2743 drm_for_each_crtc(tmp
, crtc
->dev
)
2744 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2748 ret
= crtc
->funcs
->set_config(set
);
2750 crtc
->primary
->crtc
= crtc
;
2751 crtc
->primary
->fb
= fb
;
2754 drm_for_each_crtc(tmp
, crtc
->dev
) {
2755 if (tmp
->primary
->fb
)
2756 drm_framebuffer_reference(tmp
->primary
->fb
);
2757 if (tmp
->primary
->old_fb
)
2758 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2759 tmp
->primary
->old_fb
= NULL
;
2764 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2767 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2768 * @mode: mode to query
2769 * @hdisplay: hdisplay value to fill in
2770 * @vdisplay: vdisplay value to fill in
2772 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2773 * the appropriate layout.
2775 void drm_crtc_get_hv_timing(const struct drm_display_mode
*mode
,
2776 int *hdisplay
, int *vdisplay
)
2778 struct drm_display_mode adjusted
;
2780 drm_mode_copy(&adjusted
, mode
);
2781 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE_ONLY
);
2782 *hdisplay
= adjusted
.crtc_hdisplay
;
2783 *vdisplay
= adjusted
.crtc_vdisplay
;
2785 EXPORT_SYMBOL(drm_crtc_get_hv_timing
);
2788 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2790 * @crtc: CRTC that framebuffer will be displayed on
2793 * @mode: mode that framebuffer will be displayed under
2794 * @fb: framebuffer to check size of
2796 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2798 const struct drm_display_mode
*mode
,
2799 const struct drm_framebuffer
*fb
)
2802 int hdisplay
, vdisplay
;
2804 drm_crtc_get_hv_timing(mode
, &hdisplay
, &vdisplay
);
2807 crtc
->primary
->state
->rotation
& (BIT(DRM_ROTATE_90
) |
2808 BIT(DRM_ROTATE_270
)))
2809 swap(hdisplay
, vdisplay
);
2811 return check_src_coords(x
<< 16, y
<< 16,
2812 hdisplay
<< 16, vdisplay
<< 16, fb
);
2814 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2817 * drm_mode_setcrtc - set CRTC configuration
2818 * @dev: drm device for the ioctl
2819 * @data: data pointer for the ioctl
2820 * @file_priv: drm file for the ioctl call
2822 * Build a new CRTC configuration based on user request.
2824 * Called by the user via ioctl.
2827 * Zero on success, negative errno on failure.
2829 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2830 struct drm_file
*file_priv
)
2832 struct drm_mode_config
*config
= &dev
->mode_config
;
2833 struct drm_mode_crtc
*crtc_req
= data
;
2834 struct drm_crtc
*crtc
;
2835 struct drm_connector
**connector_set
= NULL
, *connector
;
2836 struct drm_framebuffer
*fb
= NULL
;
2837 struct drm_display_mode
*mode
= NULL
;
2838 struct drm_mode_set set
;
2839 uint32_t __user
*set_connectors_ptr
;
2843 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2847 * Universal plane src offsets are only 16.16, prevent havoc for
2848 * drivers using universal plane code internally.
2850 if (crtc_req
->x
& 0xffff0000 || crtc_req
->y
& 0xffff0000)
2853 drm_modeset_lock_all(dev
);
2854 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2856 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2860 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc
->base
.id
, crtc
->name
);
2862 if (crtc_req
->mode_valid
) {
2863 /* If we have a mode we need a framebuffer. */
2864 /* If we pass -1, set the mode with the currently bound fb */
2865 if (crtc_req
->fb_id
== -1) {
2866 if (!crtc
->primary
->fb
) {
2867 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2871 fb
= crtc
->primary
->fb
;
2872 /* Make refcounting symmetric with the lookup path. */
2873 drm_framebuffer_reference(fb
);
2875 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2877 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2884 mode
= drm_mode_create(dev
);
2890 ret
= drm_mode_convert_umode(mode
, &crtc_req
->mode
);
2892 DRM_DEBUG_KMS("Invalid mode\n");
2897 * Check whether the primary plane supports the fb pixel format.
2898 * Drivers not implementing the universal planes API use a
2899 * default formats list provided by the DRM core which doesn't
2900 * match real hardware capabilities. Skip the check in that
2903 if (!crtc
->primary
->format_default
) {
2904 ret
= drm_plane_check_pixel_format(crtc
->primary
,
2907 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2908 drm_get_format_name(fb
->pixel_format
));
2913 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2920 if (crtc_req
->count_connectors
== 0 && mode
) {
2921 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2926 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2927 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2928 crtc_req
->count_connectors
);
2933 if (crtc_req
->count_connectors
> 0) {
2936 /* Avoid unbounded kernel memory allocation */
2937 if (crtc_req
->count_connectors
> config
->num_connector
) {
2942 connector_set
= kmalloc_array(crtc_req
->count_connectors
,
2943 sizeof(struct drm_connector
*),
2945 if (!connector_set
) {
2950 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2951 connector_set
[i
] = NULL
;
2952 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2953 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2958 connector
= drm_connector_lookup(dev
, out_id
);
2960 DRM_DEBUG_KMS("Connector id %d unknown\n",
2965 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2969 connector_set
[i
] = connector
;
2974 set
.x
= crtc_req
->x
;
2975 set
.y
= crtc_req
->y
;
2977 set
.connectors
= connector_set
;
2978 set
.num_connectors
= crtc_req
->count_connectors
;
2980 ret
= drm_mode_set_config_internal(&set
);
2984 drm_framebuffer_unreference(fb
);
2986 if (connector_set
) {
2987 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2988 if (connector_set
[i
])
2989 drm_connector_unreference(connector_set
[i
]);
2992 kfree(connector_set
);
2993 drm_mode_destroy(dev
, mode
);
2994 drm_modeset_unlock_all(dev
);
2999 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
3000 * universal plane handler call
3001 * @crtc: crtc to update cursor for
3002 * @req: data pointer for the ioctl
3003 * @file_priv: drm file for the ioctl call
3005 * Legacy cursor ioctl's work directly with driver buffer handles. To
3006 * translate legacy ioctl calls into universal plane handler calls, we need to
3007 * wrap the native buffer handle in a drm_framebuffer.
3009 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
3010 * buffer with a pitch of 4*width; the universal plane interface should be used
3011 * directly in cases where the hardware can support other buffer settings and
3012 * userspace wants to make use of these capabilities.
3015 * Zero on success, negative errno on failure.
3017 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
3018 struct drm_mode_cursor2
*req
,
3019 struct drm_file
*file_priv
)
3021 struct drm_device
*dev
= crtc
->dev
;
3022 struct drm_framebuffer
*fb
= NULL
;
3023 struct drm_mode_fb_cmd2 fbreq
= {
3024 .width
= req
->width
,
3025 .height
= req
->height
,
3026 .pixel_format
= DRM_FORMAT_ARGB8888
,
3027 .pitches
= { req
->width
* 4 },
3028 .handles
= { req
->handle
},
3030 int32_t crtc_x
, crtc_y
;
3031 uint32_t crtc_w
= 0, crtc_h
= 0;
3032 uint32_t src_w
= 0, src_h
= 0;
3035 BUG_ON(!crtc
->cursor
);
3036 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
3039 * Obtain fb we'll be using (either new or existing) and take an extra
3040 * reference to it if fb != null. setplane will take care of dropping
3041 * the reference if the plane update fails.
3043 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
3045 fb
= internal_framebuffer_create(dev
, &fbreq
, file_priv
);
3047 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
3050 fb
->hot_x
= req
->hot_x
;
3051 fb
->hot_y
= req
->hot_y
;
3056 fb
= crtc
->cursor
->fb
;
3058 drm_framebuffer_reference(fb
);
3061 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
3065 crtc_x
= crtc
->cursor_x
;
3066 crtc_y
= crtc
->cursor_y
;
3071 crtc_h
= fb
->height
;
3072 src_w
= fb
->width
<< 16;
3073 src_h
= fb
->height
<< 16;
3077 * setplane_internal will take care of deref'ing either the old or new
3078 * framebuffer depending on success.
3080 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
3081 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
3082 0, 0, src_w
, src_h
);
3084 /* Update successful; save new cursor position, if necessary */
3085 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
3086 crtc
->cursor_x
= req
->x
;
3087 crtc
->cursor_y
= req
->y
;
3093 static int drm_mode_cursor_common(struct drm_device
*dev
,
3094 struct drm_mode_cursor2
*req
,
3095 struct drm_file
*file_priv
)
3097 struct drm_crtc
*crtc
;
3100 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3103 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
3106 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
3108 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
3113 * If this crtc has a universal cursor plane, call that plane's update
3114 * handler rather than using legacy cursor handlers.
3116 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
3118 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
3122 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
3123 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
3127 /* Turns off the cursor if handle is 0 */
3128 if (crtc
->funcs
->cursor_set2
)
3129 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
3130 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
3132 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
3133 req
->width
, req
->height
);
3136 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
3137 if (crtc
->funcs
->cursor_move
) {
3138 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
3145 drm_modeset_unlock_crtc(crtc
);
3153 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3154 * @dev: drm device for the ioctl
3155 * @data: data pointer for the ioctl
3156 * @file_priv: drm file for the ioctl call
3158 * Set the cursor configuration based on user request.
3160 * Called by the user via ioctl.
3163 * Zero on success, negative errno on failure.
3165 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
3166 void *data
, struct drm_file
*file_priv
)
3168 struct drm_mode_cursor
*req
= data
;
3169 struct drm_mode_cursor2 new_req
;
3171 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
3172 new_req
.hot_x
= new_req
.hot_y
= 0;
3174 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
3178 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3179 * @dev: drm device for the ioctl
3180 * @data: data pointer for the ioctl
3181 * @file_priv: drm file for the ioctl call
3183 * Set the cursor configuration based on user request. This implements the 2nd
3184 * version of the cursor ioctl, which allows userspace to additionally specify
3185 * the hotspot of the pointer.
3187 * Called by the user via ioctl.
3190 * Zero on success, negative errno on failure.
3192 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
3193 void *data
, struct drm_file
*file_priv
)
3195 struct drm_mode_cursor2
*req
= data
;
3197 return drm_mode_cursor_common(dev
, req
, file_priv
);
3201 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3202 * @bpp: bits per pixels
3203 * @depth: bit depth per pixel
3205 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3206 * Useful in fbdev emulation code, since that deals in those values.
3208 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
3214 fmt
= DRM_FORMAT_C8
;
3218 fmt
= DRM_FORMAT_XRGB1555
;
3220 fmt
= DRM_FORMAT_RGB565
;
3223 fmt
= DRM_FORMAT_RGB888
;
3227 fmt
= DRM_FORMAT_XRGB8888
;
3228 else if (depth
== 30)
3229 fmt
= DRM_FORMAT_XRGB2101010
;
3231 fmt
= DRM_FORMAT_ARGB8888
;
3234 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3235 fmt
= DRM_FORMAT_XRGB8888
;
3241 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
3244 * drm_mode_addfb - add an FB to the graphics configuration
3245 * @dev: drm device for the ioctl
3246 * @data: data pointer for the ioctl
3247 * @file_priv: drm file for the ioctl call
3249 * Add a new FB to the specified CRTC, given a user request. This is the
3250 * original addfb ioctl which only supported RGB formats.
3252 * Called by the user via ioctl.
3255 * Zero on success, negative errno on failure.
3257 int drm_mode_addfb(struct drm_device
*dev
,
3258 void *data
, struct drm_file
*file_priv
)
3260 struct drm_mode_fb_cmd
*or = data
;
3261 struct drm_mode_fb_cmd2 r
= {};
3264 /* convert to new format and call new ioctl */
3265 r
.fb_id
= or->fb_id
;
3266 r
.width
= or->width
;
3267 r
.height
= or->height
;
3268 r
.pitches
[0] = or->pitch
;
3269 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
3270 r
.handles
[0] = or->handle
;
3272 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
3276 or->fb_id
= r
.fb_id
;
3281 static int format_check(const struct drm_mode_fb_cmd2
*r
)
3283 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3287 case DRM_FORMAT_RGB332
:
3288 case DRM_FORMAT_BGR233
:
3289 case DRM_FORMAT_XRGB4444
:
3290 case DRM_FORMAT_XBGR4444
:
3291 case DRM_FORMAT_RGBX4444
:
3292 case DRM_FORMAT_BGRX4444
:
3293 case DRM_FORMAT_ARGB4444
:
3294 case DRM_FORMAT_ABGR4444
:
3295 case DRM_FORMAT_RGBA4444
:
3296 case DRM_FORMAT_BGRA4444
:
3297 case DRM_FORMAT_XRGB1555
:
3298 case DRM_FORMAT_XBGR1555
:
3299 case DRM_FORMAT_RGBX5551
:
3300 case DRM_FORMAT_BGRX5551
:
3301 case DRM_FORMAT_ARGB1555
:
3302 case DRM_FORMAT_ABGR1555
:
3303 case DRM_FORMAT_RGBA5551
:
3304 case DRM_FORMAT_BGRA5551
:
3305 case DRM_FORMAT_RGB565
:
3306 case DRM_FORMAT_BGR565
:
3307 case DRM_FORMAT_RGB888
:
3308 case DRM_FORMAT_BGR888
:
3309 case DRM_FORMAT_XRGB8888
:
3310 case DRM_FORMAT_XBGR8888
:
3311 case DRM_FORMAT_RGBX8888
:
3312 case DRM_FORMAT_BGRX8888
:
3313 case DRM_FORMAT_ARGB8888
:
3314 case DRM_FORMAT_ABGR8888
:
3315 case DRM_FORMAT_RGBA8888
:
3316 case DRM_FORMAT_BGRA8888
:
3317 case DRM_FORMAT_XRGB2101010
:
3318 case DRM_FORMAT_XBGR2101010
:
3319 case DRM_FORMAT_RGBX1010102
:
3320 case DRM_FORMAT_BGRX1010102
:
3321 case DRM_FORMAT_ARGB2101010
:
3322 case DRM_FORMAT_ABGR2101010
:
3323 case DRM_FORMAT_RGBA1010102
:
3324 case DRM_FORMAT_BGRA1010102
:
3325 case DRM_FORMAT_YUYV
:
3326 case DRM_FORMAT_YVYU
:
3327 case DRM_FORMAT_UYVY
:
3328 case DRM_FORMAT_VYUY
:
3329 case DRM_FORMAT_AYUV
:
3330 case DRM_FORMAT_NV12
:
3331 case DRM_FORMAT_NV21
:
3332 case DRM_FORMAT_NV16
:
3333 case DRM_FORMAT_NV61
:
3334 case DRM_FORMAT_NV24
:
3335 case DRM_FORMAT_NV42
:
3336 case DRM_FORMAT_YUV410
:
3337 case DRM_FORMAT_YVU410
:
3338 case DRM_FORMAT_YUV411
:
3339 case DRM_FORMAT_YVU411
:
3340 case DRM_FORMAT_YUV420
:
3341 case DRM_FORMAT_YVU420
:
3342 case DRM_FORMAT_YUV422
:
3343 case DRM_FORMAT_YVU422
:
3344 case DRM_FORMAT_YUV444
:
3345 case DRM_FORMAT_YVU444
:
3348 DRM_DEBUG_KMS("invalid pixel format %s\n",
3349 drm_get_format_name(r
->pixel_format
));
3354 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3356 int ret
, hsub
, vsub
, num_planes
, i
;
3358 ret
= format_check(r
);
3360 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3361 drm_get_format_name(r
->pixel_format
));
3365 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3366 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3367 num_planes
= drm_format_num_planes(r
->pixel_format
);
3369 if (r
->width
== 0 || r
->width
% hsub
) {
3370 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3374 if (r
->height
== 0 || r
->height
% vsub
) {
3375 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3379 for (i
= 0; i
< num_planes
; i
++) {
3380 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3381 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3382 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3384 if (!r
->handles
[i
]) {
3385 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3389 if ((uint64_t) width
* cpp
> UINT_MAX
)
3392 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3395 if (r
->pitches
[i
] < width
* cpp
) {
3396 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3400 if (r
->modifier
[i
] && !(r
->flags
& DRM_MODE_FB_MODIFIERS
)) {
3401 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3406 /* modifier specific checks: */
3407 switch (r
->modifier
[i
]) {
3408 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE
:
3409 /* NOTE: the pitch restriction may be lifted later if it turns
3410 * out that no hw has this restriction:
3412 if (r
->pixel_format
!= DRM_FORMAT_NV12
||
3413 width
% 128 || height
% 32 ||
3414 r
->pitches
[i
] % 128) {
3415 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i
);
3425 for (i
= num_planes
; i
< 4; i
++) {
3426 if (r
->modifier
[i
]) {
3427 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i
);
3431 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3432 if (!(r
->flags
& DRM_MODE_FB_MODIFIERS
))
3435 if (r
->handles
[i
]) {
3436 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i
);
3440 if (r
->pitches
[i
]) {
3441 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i
);
3445 if (r
->offsets
[i
]) {
3446 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i
);
3454 static struct drm_framebuffer
*
3455 internal_framebuffer_create(struct drm_device
*dev
,
3456 const struct drm_mode_fb_cmd2
*r
,
3457 struct drm_file
*file_priv
)
3459 struct drm_mode_config
*config
= &dev
->mode_config
;
3460 struct drm_framebuffer
*fb
;
3463 if (r
->flags
& ~(DRM_MODE_FB_INTERLACED
| DRM_MODE_FB_MODIFIERS
)) {
3464 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3465 return ERR_PTR(-EINVAL
);
3468 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3469 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3470 r
->width
, config
->min_width
, config
->max_width
);
3471 return ERR_PTR(-EINVAL
);
3473 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3474 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3475 r
->height
, config
->min_height
, config
->max_height
);
3476 return ERR_PTR(-EINVAL
);
3479 if (r
->flags
& DRM_MODE_FB_MODIFIERS
&&
3480 !dev
->mode_config
.allow_fb_modifiers
) {
3481 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3482 return ERR_PTR(-EINVAL
);
3485 ret
= framebuffer_check(r
);
3487 return ERR_PTR(ret
);
3489 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3491 DRM_DEBUG_KMS("could not create framebuffer\n");
3499 * drm_mode_addfb2 - add an FB to the graphics configuration
3500 * @dev: drm device for the ioctl
3501 * @data: data pointer for the ioctl
3502 * @file_priv: drm file for the ioctl call
3504 * Add a new FB to the specified CRTC, given a user request with format. This is
3505 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3506 * and uses fourcc codes as pixel format specifiers.
3508 * Called by the user via ioctl.
3511 * Zero on success, negative errno on failure.
3513 int drm_mode_addfb2(struct drm_device
*dev
,
3514 void *data
, struct drm_file
*file_priv
)
3516 struct drm_mode_fb_cmd2
*r
= data
;
3517 struct drm_framebuffer
*fb
;
3519 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3522 fb
= internal_framebuffer_create(dev
, r
, file_priv
);
3526 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3527 r
->fb_id
= fb
->base
.id
;
3529 /* Transfer ownership to the filp for reaping on close */
3530 mutex_lock(&file_priv
->fbs_lock
);
3531 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3532 mutex_unlock(&file_priv
->fbs_lock
);
3537 struct drm_mode_rmfb_work
{
3538 struct work_struct work
;
3539 struct list_head fbs
;
3542 static void drm_mode_rmfb_work_fn(struct work_struct
*w
)
3544 struct drm_mode_rmfb_work
*arg
= container_of(w
, typeof(*arg
), work
);
3546 while (!list_empty(&arg
->fbs
)) {
3547 struct drm_framebuffer
*fb
=
3548 list_first_entry(&arg
->fbs
, typeof(*fb
), filp_head
);
3550 list_del_init(&fb
->filp_head
);
3551 drm_framebuffer_remove(fb
);
3556 * drm_mode_rmfb - remove an FB from the configuration
3557 * @dev: drm device for the ioctl
3558 * @data: data pointer for the ioctl
3559 * @file_priv: drm file for the ioctl call
3561 * Remove the FB specified by the user.
3563 * Called by the user via ioctl.
3566 * Zero on success, negative errno on failure.
3568 int drm_mode_rmfb(struct drm_device
*dev
,
3569 void *data
, struct drm_file
*file_priv
)
3571 struct drm_framebuffer
*fb
= NULL
;
3572 struct drm_framebuffer
*fbl
= NULL
;
3573 uint32_t *id
= data
;
3576 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3579 fb
= drm_framebuffer_lookup(dev
, *id
);
3583 mutex_lock(&file_priv
->fbs_lock
);
3584 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3588 mutex_unlock(&file_priv
->fbs_lock
);
3592 list_del_init(&fb
->filp_head
);
3593 mutex_unlock(&file_priv
->fbs_lock
);
3595 /* drop the reference we picked up in framebuffer lookup */
3596 drm_framebuffer_unreference(fb
);
3599 * we now own the reference that was stored in the fbs list
3601 * drm_framebuffer_remove may fail with -EINTR on pending signals,
3602 * so run this in a separate stack as there's no way to correctly
3603 * handle this after the fb is already removed from the lookup table.
3605 if (drm_framebuffer_read_refcount(fb
) > 1) {
3606 struct drm_mode_rmfb_work arg
;
3608 INIT_WORK_ONSTACK(&arg
.work
, drm_mode_rmfb_work_fn
);
3609 INIT_LIST_HEAD(&arg
.fbs
);
3610 list_add_tail(&fb
->filp_head
, &arg
.fbs
);
3612 schedule_work(&arg
.work
);
3613 flush_work(&arg
.work
);
3614 destroy_work_on_stack(&arg
.work
);
3616 drm_framebuffer_unreference(fb
);
3621 drm_framebuffer_unreference(fb
);
3626 * drm_mode_getfb - get FB info
3627 * @dev: drm device for the ioctl
3628 * @data: data pointer for the ioctl
3629 * @file_priv: drm file for the ioctl call
3631 * Lookup the FB given its ID and return info about it.
3633 * Called by the user via ioctl.
3636 * Zero on success, negative errno on failure.
3638 int drm_mode_getfb(struct drm_device
*dev
,
3639 void *data
, struct drm_file
*file_priv
)
3641 struct drm_mode_fb_cmd
*r
= data
;
3642 struct drm_framebuffer
*fb
;
3645 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3648 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3652 r
->height
= fb
->height
;
3653 r
->width
= fb
->width
;
3654 r
->depth
= fb
->depth
;
3655 r
->bpp
= fb
->bits_per_pixel
;
3656 r
->pitch
= fb
->pitches
[0];
3657 if (fb
->funcs
->create_handle
) {
3658 if (drm_is_current_master(file_priv
) || capable(CAP_SYS_ADMIN
) ||
3659 drm_is_control_client(file_priv
)) {
3660 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3663 /* GET_FB() is an unprivileged ioctl so we must not
3664 * return a buffer-handle to non-master processes! For
3665 * backwards-compatibility reasons, we cannot make
3666 * GET_FB() privileged, so just return an invalid handle
3667 * for non-masters. */
3675 drm_framebuffer_unreference(fb
);
3681 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3682 * @dev: drm device for the ioctl
3683 * @data: data pointer for the ioctl
3684 * @file_priv: drm file for the ioctl call
3686 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3687 * rectangle list. Generic userspace which does frontbuffer rendering must call
3688 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3689 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3691 * Modesetting drivers which always update the frontbuffer do not need to
3692 * implement the corresponding ->dirty framebuffer callback.
3694 * Called by the user via ioctl.
3697 * Zero on success, negative errno on failure.
3699 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3700 void *data
, struct drm_file
*file_priv
)
3702 struct drm_clip_rect __user
*clips_ptr
;
3703 struct drm_clip_rect
*clips
= NULL
;
3704 struct drm_mode_fb_dirty_cmd
*r
= data
;
3705 struct drm_framebuffer
*fb
;
3710 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3713 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3717 num_clips
= r
->num_clips
;
3718 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3720 if (!num_clips
!= !clips_ptr
) {
3725 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3727 /* If userspace annotates copy, clips must come in pairs */
3728 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3733 if (num_clips
&& clips_ptr
) {
3734 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3738 clips
= kcalloc(num_clips
, sizeof(*clips
), GFP_KERNEL
);
3744 ret
= copy_from_user(clips
, clips_ptr
,
3745 num_clips
* sizeof(*clips
));
3752 if (fb
->funcs
->dirty
) {
3753 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3762 drm_framebuffer_unreference(fb
);
3768 * drm_fb_release - remove and free the FBs on this file
3769 * @priv: drm file for the ioctl
3771 * Destroy all the FBs associated with @filp.
3773 * Called by the user via ioctl.
3776 * Zero on success, negative errno on failure.
3778 void drm_fb_release(struct drm_file
*priv
)
3780 struct drm_framebuffer
*fb
, *tfb
;
3781 struct drm_mode_rmfb_work arg
;
3783 INIT_LIST_HEAD(&arg
.fbs
);
3786 * When the file gets released that means no one else can access the fb
3787 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3788 * avoid upsetting lockdep since the universal cursor code adds a
3789 * framebuffer while holding mutex locks.
3791 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3792 * locks is impossible here since no one else but this function can get
3795 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3796 if (drm_framebuffer_read_refcount(fb
) > 1) {
3797 list_move_tail(&fb
->filp_head
, &arg
.fbs
);
3799 list_del_init(&fb
->filp_head
);
3801 /* This drops the fpriv->fbs reference. */
3802 drm_framebuffer_unreference(fb
);
3806 if (!list_empty(&arg
.fbs
)) {
3807 INIT_WORK_ONSTACK(&arg
.work
, drm_mode_rmfb_work_fn
);
3809 schedule_work(&arg
.work
);
3810 flush_work(&arg
.work
);
3811 destroy_work_on_stack(&arg
.work
);
3815 static bool drm_property_type_valid(struct drm_property
*property
)
3817 if (property
->flags
& DRM_MODE_PROP_EXTENDED_TYPE
)
3818 return !(property
->flags
& DRM_MODE_PROP_LEGACY_TYPE
);
3819 return !!(property
->flags
& DRM_MODE_PROP_LEGACY_TYPE
);
3823 * drm_property_create - create a new property type
3825 * @flags: flags specifying the property type
3826 * @name: name of the property
3827 * @num_values: number of pre-defined values
3829 * This creates a new generic drm property which can then be attached to a drm
3830 * object with drm_object_attach_property. The returned property object must be
3831 * freed with drm_property_destroy.
3833 * Note that the DRM core keeps a per-device list of properties and that, if
3834 * drm_mode_config_cleanup() is called, it will destroy all properties created
3838 * A pointer to the newly created property on success, NULL on failure.
3840 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3841 const char *name
, int num_values
)
3843 struct drm_property
*property
= NULL
;
3846 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3850 property
->dev
= dev
;
3853 property
->values
= kcalloc(num_values
, sizeof(uint64_t),
3855 if (!property
->values
)
3859 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3863 property
->flags
= flags
;
3864 property
->num_values
= num_values
;
3865 INIT_LIST_HEAD(&property
->enum_list
);
3868 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3869 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3872 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3874 WARN_ON(!drm_property_type_valid(property
));
3878 kfree(property
->values
);
3882 EXPORT_SYMBOL(drm_property_create
);
3885 * drm_property_create_enum - create a new enumeration property type
3887 * @flags: flags specifying the property type
3888 * @name: name of the property
3889 * @props: enumeration lists with property values
3890 * @num_values: number of pre-defined values
3892 * This creates a new generic drm property which can then be attached to a drm
3893 * object with drm_object_attach_property. The returned property object must be
3894 * freed with drm_property_destroy.
3896 * Userspace is only allowed to set one of the predefined values for enumeration
3900 * A pointer to the newly created property on success, NULL on failure.
3902 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3904 const struct drm_prop_enum_list
*props
,
3907 struct drm_property
*property
;
3910 flags
|= DRM_MODE_PROP_ENUM
;
3912 property
= drm_property_create(dev
, flags
, name
, num_values
);
3916 for (i
= 0; i
< num_values
; i
++) {
3917 ret
= drm_property_add_enum(property
, i
,
3921 drm_property_destroy(dev
, property
);
3928 EXPORT_SYMBOL(drm_property_create_enum
);
3931 * drm_property_create_bitmask - create a new bitmask property type
3933 * @flags: flags specifying the property type
3934 * @name: name of the property
3935 * @props: enumeration lists with property bitflags
3936 * @num_props: size of the @props array
3937 * @supported_bits: bitmask of all supported enumeration values
3939 * This creates a new bitmask drm property which can then be attached to a drm
3940 * object with drm_object_attach_property. The returned property object must be
3941 * freed with drm_property_destroy.
3943 * Compared to plain enumeration properties userspace is allowed to set any
3944 * or'ed together combination of the predefined property bitflag values
3947 * A pointer to the newly created property on success, NULL on failure.
3949 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3950 int flags
, const char *name
,
3951 const struct drm_prop_enum_list
*props
,
3953 uint64_t supported_bits
)
3955 struct drm_property
*property
;
3956 int i
, ret
, index
= 0;
3957 int num_values
= hweight64(supported_bits
);
3959 flags
|= DRM_MODE_PROP_BITMASK
;
3961 property
= drm_property_create(dev
, flags
, name
, num_values
);
3964 for (i
= 0; i
< num_props
; i
++) {
3965 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3968 if (WARN_ON(index
>= num_values
)) {
3969 drm_property_destroy(dev
, property
);
3973 ret
= drm_property_add_enum(property
, index
++,
3977 drm_property_destroy(dev
, property
);
3984 EXPORT_SYMBOL(drm_property_create_bitmask
);
3986 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3987 int flags
, const char *name
,
3988 uint64_t min
, uint64_t max
)
3990 struct drm_property
*property
;
3992 property
= drm_property_create(dev
, flags
, name
, 2);
3996 property
->values
[0] = min
;
3997 property
->values
[1] = max
;
4003 * drm_property_create_range - create a new unsigned ranged property type
4005 * @flags: flags specifying the property type
4006 * @name: name of the property
4007 * @min: minimum value of the property
4008 * @max: maximum value of the property
4010 * This creates a new generic drm property which can then be attached to a drm
4011 * object with drm_object_attach_property. The returned property object must be
4012 * freed with drm_property_destroy.
4014 * Userspace is allowed to set any unsigned integer value in the (min, max)
4018 * A pointer to the newly created property on success, NULL on failure.
4020 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
4022 uint64_t min
, uint64_t max
)
4024 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
4027 EXPORT_SYMBOL(drm_property_create_range
);
4030 * drm_property_create_signed_range - create a new signed ranged property type
4032 * @flags: flags specifying the property type
4033 * @name: name of the property
4034 * @min: minimum value of the property
4035 * @max: maximum value of the property
4037 * This creates a new generic drm property which can then be attached to a drm
4038 * object with drm_object_attach_property. The returned property object must be
4039 * freed with drm_property_destroy.
4041 * Userspace is allowed to set any signed integer value in the (min, max)
4045 * A pointer to the newly created property on success, NULL on failure.
4047 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
4048 int flags
, const char *name
,
4049 int64_t min
, int64_t max
)
4051 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
4052 name
, I642U64(min
), I642U64(max
));
4054 EXPORT_SYMBOL(drm_property_create_signed_range
);
4057 * drm_property_create_object - create a new object property type
4059 * @flags: flags specifying the property type
4060 * @name: name of the property
4061 * @type: object type from DRM_MODE_OBJECT_* defines
4063 * This creates a new generic drm property which can then be attached to a drm
4064 * object with drm_object_attach_property. The returned property object must be
4065 * freed with drm_property_destroy.
4067 * Userspace is only allowed to set this to any property value of the given
4068 * @type. Only useful for atomic properties, which is enforced.
4071 * A pointer to the newly created property on success, NULL on failure.
4073 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
4074 int flags
, const char *name
, uint32_t type
)
4076 struct drm_property
*property
;
4078 flags
|= DRM_MODE_PROP_OBJECT
;
4080 if (WARN_ON(!(flags
& DRM_MODE_PROP_ATOMIC
)))
4083 property
= drm_property_create(dev
, flags
, name
, 1);
4087 property
->values
[0] = type
;
4091 EXPORT_SYMBOL(drm_property_create_object
);
4094 * drm_property_create_bool - create a new boolean property type
4096 * @flags: flags specifying the property type
4097 * @name: name of the property
4099 * This creates a new generic drm property which can then be attached to a drm
4100 * object with drm_object_attach_property. The returned property object must be
4101 * freed with drm_property_destroy.
4103 * This is implemented as a ranged property with only {0, 1} as valid values.
4106 * A pointer to the newly created property on success, NULL on failure.
4108 struct drm_property
*drm_property_create_bool(struct drm_device
*dev
, int flags
,
4111 return drm_property_create_range(dev
, flags
, name
, 0, 1);
4113 EXPORT_SYMBOL(drm_property_create_bool
);
4116 * drm_property_add_enum - add a possible value to an enumeration property
4117 * @property: enumeration property to change
4118 * @index: index of the new enumeration
4119 * @value: value of the new enumeration
4120 * @name: symbolic name of the new enumeration
4122 * This functions adds enumerations to a property.
4124 * It's use is deprecated, drivers should use one of the more specific helpers
4125 * to directly create the property with all enumerations already attached.
4128 * Zero on success, error code on failure.
4130 int drm_property_add_enum(struct drm_property
*property
, int index
,
4131 uint64_t value
, const char *name
)
4133 struct drm_property_enum
*prop_enum
;
4135 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4136 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
4140 * Bitmask enum properties have the additional constraint of values
4143 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
4147 if (!list_empty(&property
->enum_list
)) {
4148 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
4149 if (prop_enum
->value
== value
) {
4150 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
4151 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
4157 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
4161 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
4162 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
4163 prop_enum
->value
= value
;
4165 property
->values
[index
] = value
;
4166 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
4169 EXPORT_SYMBOL(drm_property_add_enum
);
4172 * drm_property_destroy - destroy a drm property
4174 * @property: property to destry
4176 * This function frees a property including any attached resources like
4177 * enumeration values.
4179 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
4181 struct drm_property_enum
*prop_enum
, *pt
;
4183 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
4184 list_del(&prop_enum
->head
);
4188 if (property
->num_values
)
4189 kfree(property
->values
);
4190 drm_mode_object_unregister(dev
, &property
->base
);
4191 list_del(&property
->head
);
4194 EXPORT_SYMBOL(drm_property_destroy
);
4197 * drm_object_attach_property - attach a property to a modeset object
4198 * @obj: drm modeset object
4199 * @property: property to attach
4200 * @init_val: initial value of the property
4202 * This attaches the given property to the modeset object with the given initial
4203 * value. Currently this function cannot fail since the properties are stored in
4204 * a statically sized array.
4206 void drm_object_attach_property(struct drm_mode_object
*obj
,
4207 struct drm_property
*property
,
4210 int count
= obj
->properties
->count
;
4212 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
4213 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4214 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4215 "you see this message on the same object type.\n",
4220 obj
->properties
->properties
[count
] = property
;
4221 obj
->properties
->values
[count
] = init_val
;
4222 obj
->properties
->count
++;
4223 if (property
->flags
& DRM_MODE_PROP_ATOMIC
)
4224 obj
->properties
->atomic_count
++;
4226 EXPORT_SYMBOL(drm_object_attach_property
);
4229 * drm_object_property_set_value - set the value of a property
4230 * @obj: drm mode object to set property value for
4231 * @property: property to set
4232 * @val: value the property should be set to
4234 * This functions sets a given property on a given object. This function only
4235 * changes the software state of the property, it does not call into the
4236 * driver's ->set_property callback.
4239 * Zero on success, error code on failure.
4241 int drm_object_property_set_value(struct drm_mode_object
*obj
,
4242 struct drm_property
*property
, uint64_t val
)
4246 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4247 if (obj
->properties
->properties
[i
] == property
) {
4248 obj
->properties
->values
[i
] = val
;
4255 EXPORT_SYMBOL(drm_object_property_set_value
);
4258 * drm_object_property_get_value - retrieve the value of a property
4259 * @obj: drm mode object to get property value from
4260 * @property: property to retrieve
4261 * @val: storage for the property value
4263 * This function retrieves the softare state of the given property for the given
4264 * property. Since there is no driver callback to retrieve the current property
4265 * value this might be out of sync with the hardware, depending upon the driver
4269 * Zero on success, error code on failure.
4271 int drm_object_property_get_value(struct drm_mode_object
*obj
,
4272 struct drm_property
*property
, uint64_t *val
)
4276 /* read-only properties bypass atomic mechanism and still store
4277 * their value in obj->properties->values[].. mostly to avoid
4278 * having to deal w/ EDID and similar props in atomic paths:
4280 if (drm_core_check_feature(property
->dev
, DRIVER_ATOMIC
) &&
4281 !(property
->flags
& DRM_MODE_PROP_IMMUTABLE
))
4282 return drm_atomic_get_property(obj
, property
, val
);
4284 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4285 if (obj
->properties
->properties
[i
] == property
) {
4286 *val
= obj
->properties
->values
[i
];
4293 EXPORT_SYMBOL(drm_object_property_get_value
);
4296 * drm_mode_getproperty_ioctl - get the property metadata
4299 * @file_priv: DRM file info
4301 * This function retrieves the metadata for a given property, like the different
4302 * possible values for an enum property or the limits for a range property.
4304 * Blob properties are special
4306 * Called by the user via ioctl.
4309 * Zero on success, negative errno on failure.
4311 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
4312 void *data
, struct drm_file
*file_priv
)
4314 struct drm_mode_get_property
*out_resp
= data
;
4315 struct drm_property
*property
;
4317 int value_count
= 0;
4320 struct drm_property_enum
*prop_enum
;
4321 struct drm_mode_property_enum __user
*enum_ptr
;
4322 uint64_t __user
*values_ptr
;
4324 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4327 drm_modeset_lock_all(dev
);
4328 property
= drm_property_find(dev
, out_resp
->prop_id
);
4334 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4335 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4336 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
4340 value_count
= property
->num_values
;
4342 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
4343 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
4344 out_resp
->flags
= property
->flags
;
4346 if ((out_resp
->count_values
>= value_count
) && value_count
) {
4347 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
4348 for (i
= 0; i
< value_count
; i
++) {
4349 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
4355 out_resp
->count_values
= value_count
;
4357 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4358 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4359 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
4361 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
4362 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
4364 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
4369 if (copy_to_user(&enum_ptr
[copied
].name
,
4370 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
4377 out_resp
->count_enum_blobs
= enum_count
;
4381 * NOTE: The idea seems to have been to use this to read all the blob
4382 * property values. But nothing ever added them to the corresponding
4383 * list, userspace always used the special-purpose get_blob ioctl to
4384 * read the value for a blob property. It also doesn't make a lot of
4385 * sense to return values here when everything else is just metadata for
4386 * the property itself.
4388 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4389 out_resp
->count_enum_blobs
= 0;
4391 drm_modeset_unlock_all(dev
);
4395 static void drm_property_free_blob(struct kref
*kref
)
4397 struct drm_property_blob
*blob
=
4398 container_of(kref
, struct drm_property_blob
, base
.refcount
);
4400 mutex_lock(&blob
->dev
->mode_config
.blob_lock
);
4401 list_del(&blob
->head_global
);
4402 mutex_unlock(&blob
->dev
->mode_config
.blob_lock
);
4404 drm_mode_object_unregister(blob
->dev
, &blob
->base
);
4410 * drm_property_create_blob - Create new blob property
4412 * Creates a new blob property for a specified DRM device, optionally
4415 * @dev: DRM device to create property for
4416 * @length: Length to allocate for blob data
4417 * @data: If specified, copies data into blob
4420 * New blob property with a single reference on success, or an ERR_PTR
4423 struct drm_property_blob
*
4424 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
4427 struct drm_property_blob
*blob
;
4430 if (!length
|| length
> ULONG_MAX
- sizeof(struct drm_property_blob
))
4431 return ERR_PTR(-EINVAL
);
4433 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
4435 return ERR_PTR(-ENOMEM
);
4437 /* This must be explicitly initialised, so we can safely call list_del
4438 * on it in the removal handler, even if it isn't in a file list. */
4439 INIT_LIST_HEAD(&blob
->head_file
);
4440 blob
->length
= length
;
4444 memcpy(blob
->data
, data
, length
);
4446 ret
= drm_mode_object_get_reg(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
,
4447 true, drm_property_free_blob
);
4450 return ERR_PTR(-EINVAL
);
4453 mutex_lock(&dev
->mode_config
.blob_lock
);
4454 list_add_tail(&blob
->head_global
,
4455 &dev
->mode_config
.property_blob_list
);
4456 mutex_unlock(&dev
->mode_config
.blob_lock
);
4460 EXPORT_SYMBOL(drm_property_create_blob
);
4463 * drm_property_unreference_blob - Unreference a blob property
4465 * Drop a reference on a blob property. May free the object.
4467 * @blob: Pointer to blob property
4469 void drm_property_unreference_blob(struct drm_property_blob
*blob
)
4474 drm_mode_object_unreference(&blob
->base
);
4476 EXPORT_SYMBOL(drm_property_unreference_blob
);
4479 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4481 * @file_priv: destroy all blobs owned by this file handle
4483 void drm_property_destroy_user_blobs(struct drm_device
*dev
,
4484 struct drm_file
*file_priv
)
4486 struct drm_property_blob
*blob
, *bt
;
4489 * When the file gets released that means no one else can access the
4490 * blob list any more, so no need to grab dev->blob_lock.
4492 list_for_each_entry_safe(blob
, bt
, &file_priv
->blobs
, head_file
) {
4493 list_del_init(&blob
->head_file
);
4494 drm_property_unreference_blob(blob
);
4499 * drm_property_reference_blob - Take a reference on an existing property
4501 * Take a new reference on an existing blob property.
4503 * @blob: Pointer to blob property
4505 struct drm_property_blob
*drm_property_reference_blob(struct drm_property_blob
*blob
)
4507 drm_mode_object_reference(&blob
->base
);
4510 EXPORT_SYMBOL(drm_property_reference_blob
);
4513 * drm_property_lookup_blob - look up a blob property and take a reference
4515 * @id: id of the blob property
4517 * If successful, this takes an additional reference to the blob property.
4518 * callers need to make sure to eventually unreference the returned property
4519 * again, using @drm_property_unreference_blob.
4521 struct drm_property_blob
*drm_property_lookup_blob(struct drm_device
*dev
,
4524 struct drm_mode_object
*obj
;
4525 struct drm_property_blob
*blob
= NULL
;
4527 obj
= _object_find(dev
, id
, DRM_MODE_OBJECT_BLOB
);
4529 blob
= obj_to_blob(obj
);
4532 EXPORT_SYMBOL(drm_property_lookup_blob
);
4535 * drm_property_replace_global_blob - atomically replace existing blob property
4537 * @replace: location of blob property pointer to be replaced
4538 * @length: length of data for new blob, or 0 for no data
4539 * @data: content for new blob, or NULL for no data
4540 * @obj_holds_id: optional object for property holding blob ID
4541 * @prop_holds_id: optional property holding blob ID
4542 * @return 0 on success or error on failure
4544 * This function will atomically replace a global property in the blob list,
4545 * optionally updating a property which holds the ID of that property. It is
4546 * guaranteed to be atomic: no caller will be allowed to see intermediate
4547 * results, and either the entire operation will succeed and clean up the
4548 * previous property, or it will fail and the state will be unchanged.
4550 * If length is 0 or data is NULL, no new blob will be created, and the holding
4551 * property, if specified, will be set to 0.
4553 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4554 * by holding the relevant modesetting object lock for its parent.
4556 * For example, a drm_connector has a 'PATH' property, which contains the ID
4557 * of a blob property with the value of the MST path information. Calling this
4558 * function with replace pointing to the connector's path_blob_ptr, length and
4559 * data set for the new path information, obj_holds_id set to the connector's
4560 * base object, and prop_holds_id set to the path property name, will perform
4561 * a completely atomic update. The access to path_blob_ptr is protected by the
4562 * caller holding a lock on the connector.
4564 static int drm_property_replace_global_blob(struct drm_device
*dev
,
4565 struct drm_property_blob
**replace
,
4568 struct drm_mode_object
*obj_holds_id
,
4569 struct drm_property
*prop_holds_id
)
4571 struct drm_property_blob
*new_blob
= NULL
;
4572 struct drm_property_blob
*old_blob
= NULL
;
4575 WARN_ON(replace
== NULL
);
4577 old_blob
= *replace
;
4579 if (length
&& data
) {
4580 new_blob
= drm_property_create_blob(dev
, length
, data
);
4581 if (IS_ERR(new_blob
))
4582 return PTR_ERR(new_blob
);
4585 /* This does not need to be synchronised with blob_lock, as the
4586 * get_properties ioctl locks all modesetting objects, and
4587 * obj_holds_id must be locked before calling here, so we cannot
4588 * have its value out of sync with the list membership modified
4589 * below under blob_lock. */
4591 ret
= drm_object_property_set_value(obj_holds_id
,
4594 new_blob
->base
.id
: 0);
4599 drm_property_unreference_blob(old_blob
);
4600 *replace
= new_blob
;
4605 drm_property_unreference_blob(new_blob
);
4610 * drm_mode_getblob_ioctl - get the contents of a blob property value
4613 * @file_priv: DRM file info
4615 * This function retrieves the contents of a blob property. The value stored in
4616 * an object's blob property is just a normal modeset object id.
4618 * Called by the user via ioctl.
4621 * Zero on success, negative errno on failure.
4623 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
4624 void *data
, struct drm_file
*file_priv
)
4626 struct drm_mode_get_blob
*out_resp
= data
;
4627 struct drm_property_blob
*blob
;
4629 void __user
*blob_ptr
;
4631 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4634 blob
= drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4638 if (out_resp
->length
== blob
->length
) {
4639 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4640 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)) {
4645 out_resp
->length
= blob
->length
;
4647 drm_property_unreference_blob(blob
);
4653 * drm_mode_createblob_ioctl - create a new blob property
4656 * @file_priv: DRM file info
4658 * This function creates a new blob property with user-defined values. In order
4659 * to give us sensible validation and checking when creating, rather than at
4660 * every potential use, we also require a type to be provided upfront.
4662 * Called by the user via ioctl.
4665 * Zero on success, negative errno on failure.
4667 int drm_mode_createblob_ioctl(struct drm_device
*dev
,
4668 void *data
, struct drm_file
*file_priv
)
4670 struct drm_mode_create_blob
*out_resp
= data
;
4671 struct drm_property_blob
*blob
;
4672 void __user
*blob_ptr
;
4675 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4678 blob
= drm_property_create_blob(dev
, out_resp
->length
, NULL
);
4680 return PTR_ERR(blob
);
4682 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4683 if (copy_from_user(blob
->data
, blob_ptr
, out_resp
->length
)) {
4688 /* Dropping the lock between create_blob and our access here is safe
4689 * as only the same file_priv can remove the blob; at this point, it is
4690 * not associated with any file_priv. */
4691 mutex_lock(&dev
->mode_config
.blob_lock
);
4692 out_resp
->blob_id
= blob
->base
.id
;
4693 list_add_tail(&blob
->head_file
, &file_priv
->blobs
);
4694 mutex_unlock(&dev
->mode_config
.blob_lock
);
4699 drm_property_unreference_blob(blob
);
4704 * drm_mode_destroyblob_ioctl - destroy a user blob property
4707 * @file_priv: DRM file info
4709 * Destroy an existing user-defined blob property.
4711 * Called by the user via ioctl.
4714 * Zero on success, negative errno on failure.
4716 int drm_mode_destroyblob_ioctl(struct drm_device
*dev
,
4717 void *data
, struct drm_file
*file_priv
)
4719 struct drm_mode_destroy_blob
*out_resp
= data
;
4720 struct drm_property_blob
*blob
= NULL
, *bt
;
4724 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4727 blob
= drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4731 mutex_lock(&dev
->mode_config
.blob_lock
);
4732 /* Ensure the property was actually created by this user. */
4733 list_for_each_entry(bt
, &file_priv
->blobs
, head_file
) {
4745 /* We must drop head_file here, because we may not be the last
4746 * reference on the blob. */
4747 list_del_init(&blob
->head_file
);
4748 mutex_unlock(&dev
->mode_config
.blob_lock
);
4750 /* One reference from lookup, and one from the filp. */
4751 drm_property_unreference_blob(blob
);
4752 drm_property_unreference_blob(blob
);
4757 mutex_unlock(&dev
->mode_config
.blob_lock
);
4758 drm_property_unreference_blob(blob
);
4764 * drm_mode_connector_set_path_property - set tile property on connector
4765 * @connector: connector to set property on.
4766 * @path: path to use for property; must not be NULL.
4768 * This creates a property to expose to userspace to specify a
4769 * connector path. This is mainly used for DisplayPort MST where
4770 * connectors have a topology and we want to allow userspace to give
4771 * them more meaningful names.
4774 * Zero on success, negative errno on failure.
4776 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4779 struct drm_device
*dev
= connector
->dev
;
4782 ret
= drm_property_replace_global_blob(dev
,
4783 &connector
->path_blob_ptr
,
4787 dev
->mode_config
.path_property
);
4790 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4793 * drm_mode_connector_set_tile_property - set tile property on connector
4794 * @connector: connector to set property on.
4796 * This looks up the tile information for a connector, and creates a
4797 * property for userspace to parse if it exists. The property is of
4798 * the form of 8 integers using ':' as a separator.
4801 * Zero on success, errno on failure.
4803 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
)
4805 struct drm_device
*dev
= connector
->dev
;
4809 if (!connector
->has_tile
) {
4810 ret
= drm_property_replace_global_blob(dev
,
4811 &connector
->tile_blob_ptr
,
4815 dev
->mode_config
.tile_property
);
4819 snprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4820 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
4821 connector
->num_h_tile
, connector
->num_v_tile
,
4822 connector
->tile_h_loc
, connector
->tile_v_loc
,
4823 connector
->tile_h_size
, connector
->tile_v_size
);
4825 ret
= drm_property_replace_global_blob(dev
,
4826 &connector
->tile_blob_ptr
,
4830 dev
->mode_config
.tile_property
);
4833 EXPORT_SYMBOL(drm_mode_connector_set_tile_property
);
4836 * drm_mode_connector_update_edid_property - update the edid property of a connector
4837 * @connector: drm connector
4838 * @edid: new value of the edid property
4840 * This function creates a new blob modeset object and assigns its id to the
4841 * connector's edid property.
4844 * Zero on success, negative errno on failure.
4846 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4847 const struct edid
*edid
)
4849 struct drm_device
*dev
= connector
->dev
;
4853 /* ignore requests to set edid when overridden */
4854 if (connector
->override_edid
)
4858 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4860 ret
= drm_property_replace_global_blob(dev
,
4861 &connector
->edid_blob_ptr
,
4865 dev
->mode_config
.edid_property
);
4868 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4870 /* Some properties could refer to dynamic refcnt'd objects, or things that
4871 * need special locking to handle lifetime issues (ie. to ensure the prop
4872 * value doesn't become invalid part way through the property update due to
4873 * race). The value returned by reference via 'obj' should be passed back
4874 * to drm_property_change_valid_put() after the property is set (and the
4875 * object to which the property is attached has a chance to take it's own
4878 bool drm_property_change_valid_get(struct drm_property
*property
,
4879 uint64_t value
, struct drm_mode_object
**ref
)
4883 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4888 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4889 if (value
< property
->values
[0] || value
> property
->values
[1])
4892 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4893 int64_t svalue
= U642I64(value
);
4895 if (svalue
< U642I64(property
->values
[0]) ||
4896 svalue
> U642I64(property
->values
[1]))
4899 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4900 uint64_t valid_mask
= 0;
4902 for (i
= 0; i
< property
->num_values
; i
++)
4903 valid_mask
|= (1ULL << property
->values
[i
]);
4904 return !(value
& ~valid_mask
);
4905 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4906 struct drm_property_blob
*blob
;
4911 blob
= drm_property_lookup_blob(property
->dev
, value
);
4918 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4919 /* a zero value for an object property translates to null: */
4923 *ref
= _object_find(property
->dev
, value
, property
->values
[0]);
4924 return *ref
!= NULL
;
4927 for (i
= 0; i
< property
->num_values
; i
++)
4928 if (property
->values
[i
] == value
)
4933 void drm_property_change_valid_put(struct drm_property
*property
,
4934 struct drm_mode_object
*ref
)
4939 if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4940 drm_mode_object_unreference(ref
);
4941 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4942 drm_property_unreference_blob(obj_to_blob(ref
));
4946 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4949 * @file_priv: DRM file info
4951 * This function sets the current value for a connectors's property. It also
4952 * calls into a driver's ->set_property callback to update the hardware state
4954 * Called by the user via ioctl.
4957 * Zero on success, negative errno on failure.
4959 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4960 void *data
, struct drm_file
*file_priv
)
4962 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4963 struct drm_mode_obj_set_property obj_set_prop
= {
4964 .value
= conn_set_prop
->value
,
4965 .prop_id
= conn_set_prop
->prop_id
,
4966 .obj_id
= conn_set_prop
->connector_id
,
4967 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4970 /* It does all the locking and checking we need */
4971 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4974 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4975 struct drm_property
*property
,
4979 struct drm_connector
*connector
= obj_to_connector(obj
);
4981 /* Do DPMS ourselves */
4982 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4983 ret
= (*connector
->funcs
->dpms
)(connector
, (int)value
);
4984 } else if (connector
->funcs
->set_property
)
4985 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4987 /* store the property value if successful */
4989 drm_object_property_set_value(&connector
->base
, property
, value
);
4993 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4994 struct drm_property
*property
,
4998 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
5000 if (crtc
->funcs
->set_property
)
5001 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
5003 drm_object_property_set_value(obj
, property
, value
);
5009 * drm_mode_plane_set_obj_prop - set the value of a property
5010 * @plane: drm plane object to set property value for
5011 * @property: property to set
5012 * @value: value the property should be set to
5014 * This functions sets a given property on a given plane object. This function
5015 * calls the driver's ->set_property callback and changes the software state of
5016 * the property if the callback succeeds.
5019 * Zero on success, error code on failure.
5021 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
5022 struct drm_property
*property
,
5026 struct drm_mode_object
*obj
= &plane
->base
;
5028 if (plane
->funcs
->set_property
)
5029 ret
= plane
->funcs
->set_property(plane
, property
, value
);
5031 drm_object_property_set_value(obj
, property
, value
);
5035 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
5038 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
5041 * @file_priv: DRM file info
5043 * This function retrieves the current value for an object's property. Compared
5044 * to the connector specific ioctl this one is extended to also work on crtc and
5047 * Called by the user via ioctl.
5050 * Zero on success, negative errno on failure.
5052 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
5053 struct drm_file
*file_priv
)
5055 struct drm_mode_obj_get_properties
*arg
= data
;
5056 struct drm_mode_object
*obj
;
5059 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5062 drm_modeset_lock_all(dev
);
5064 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
5069 if (!obj
->properties
) {
5074 ret
= get_properties(obj
, file_priv
->atomic
,
5075 (uint32_t __user
*)(unsigned long)(arg
->props_ptr
),
5076 (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
),
5080 drm_mode_object_unreference(obj
);
5082 drm_modeset_unlock_all(dev
);
5087 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
5090 * @file_priv: DRM file info
5092 * This function sets the current value for an object's property. It also calls
5093 * into a driver's ->set_property callback to update the hardware state.
5094 * Compared to the connector specific ioctl this one is extended to also work on
5095 * crtc and plane objects.
5097 * Called by the user via ioctl.
5100 * Zero on success, negative errno on failure.
5102 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
5103 struct drm_file
*file_priv
)
5105 struct drm_mode_obj_set_property
*arg
= data
;
5106 struct drm_mode_object
*arg_obj
;
5107 struct drm_mode_object
*prop_obj
;
5108 struct drm_property
*property
;
5109 int i
, ret
= -EINVAL
;
5110 struct drm_mode_object
*ref
;
5112 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5115 drm_modeset_lock_all(dev
);
5117 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
5122 if (!arg_obj
->properties
)
5125 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
5126 if (arg_obj
->properties
->properties
[i
]->base
.id
== arg
->prop_id
)
5129 if (i
== arg_obj
->properties
->count
)
5132 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
5133 DRM_MODE_OBJECT_PROPERTY
);
5138 property
= obj_to_property(prop_obj
);
5140 if (!drm_property_change_valid_get(property
, arg
->value
, &ref
))
5143 switch (arg_obj
->type
) {
5144 case DRM_MODE_OBJECT_CONNECTOR
:
5145 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
5148 case DRM_MODE_OBJECT_CRTC
:
5149 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
5151 case DRM_MODE_OBJECT_PLANE
:
5152 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
5153 property
, arg
->value
);
5157 drm_property_change_valid_put(property
, ref
);
5160 drm_mode_object_unreference(arg_obj
);
5162 drm_modeset_unlock_all(dev
);
5167 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5168 * @connector: connector to attach
5169 * @encoder: encoder to attach @connector to
5171 * This function links up a connector to an encoder. Note that the routing
5172 * restrictions between encoders and crtcs are exposed to userspace through the
5173 * possible_clones and possible_crtcs bitmasks.
5176 * Zero on success, negative errno on failure.
5178 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
5179 struct drm_encoder
*encoder
)
5184 * In the past, drivers have attempted to model the static association
5185 * of connector to encoder in simple connector/encoder devices using a
5186 * direct assignment of connector->encoder = encoder. This connection
5187 * is a logical one and the responsibility of the core, so drivers are
5188 * expected not to mess with this.
5190 * Note that the error return should've been enough here, but a large
5191 * majority of drivers ignores the return value, so add in a big WARN
5192 * to get people's attention.
5194 if (WARN_ON(connector
->encoder
))
5197 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
5198 if (connector
->encoder_ids
[i
] == 0) {
5199 connector
->encoder_ids
[i
] = encoder
->base
.id
;
5205 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
5208 * drm_mode_crtc_set_gamma_size - set the gamma table size
5209 * @crtc: CRTC to set the gamma table size for
5210 * @gamma_size: size of the gamma table
5212 * Drivers which support gamma tables should set this to the supported gamma
5213 * table size when initializing the CRTC. Currently the drm core only supports a
5214 * fixed gamma table size.
5217 * Zero on success, negative errno on failure.
5219 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
5222 uint16_t *r_base
, *g_base
, *b_base
;
5225 crtc
->gamma_size
= gamma_size
;
5227 crtc
->gamma_store
= kcalloc(gamma_size
, sizeof(uint16_t) * 3,
5229 if (!crtc
->gamma_store
) {
5230 crtc
->gamma_size
= 0;
5234 r_base
= crtc
->gamma_store
;
5235 g_base
= r_base
+ gamma_size
;
5236 b_base
= g_base
+ gamma_size
;
5237 for (i
= 0; i
< gamma_size
; i
++) {
5246 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
5249 * drm_mode_gamma_set_ioctl - set the gamma table
5252 * @file_priv: DRM file info
5254 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5255 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5257 * Called by the user via ioctl.
5260 * Zero on success, negative errno on failure.
5262 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
5263 void *data
, struct drm_file
*file_priv
)
5265 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5266 struct drm_crtc
*crtc
;
5267 void *r_base
, *g_base
, *b_base
;
5271 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5274 drm_modeset_lock_all(dev
);
5275 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5281 if (crtc
->funcs
->gamma_set
== NULL
) {
5286 /* memcpy into gamma store */
5287 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5292 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5293 r_base
= crtc
->gamma_store
;
5294 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
5299 g_base
= r_base
+ size
;
5300 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
5305 b_base
= g_base
+ size
;
5306 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
5311 ret
= crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, crtc
->gamma_size
);
5314 drm_modeset_unlock_all(dev
);
5320 * drm_mode_gamma_get_ioctl - get the gamma table
5323 * @file_priv: DRM file info
5325 * Copy the current gamma table into the storage provided. This also provides
5326 * the gamma table size the driver expects, which can be used to size the
5327 * allocated storage.
5329 * Called by the user via ioctl.
5332 * Zero on success, negative errno on failure.
5334 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
5335 void *data
, struct drm_file
*file_priv
)
5337 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5338 struct drm_crtc
*crtc
;
5339 void *r_base
, *g_base
, *b_base
;
5343 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5346 drm_modeset_lock_all(dev
);
5347 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5353 /* memcpy into gamma store */
5354 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5359 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5360 r_base
= crtc
->gamma_store
;
5361 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
5366 g_base
= r_base
+ size
;
5367 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
5372 b_base
= g_base
+ size
;
5373 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
5378 drm_modeset_unlock_all(dev
);
5383 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5386 * @file_priv: DRM file info
5388 * This schedules an asynchronous update on a given CRTC, called page flip.
5389 * Optionally a drm event is generated to signal the completion of the event.
5390 * Generic drivers cannot assume that a pageflip with changed framebuffer
5391 * properties (including driver specific metadata like tiling layout) will work,
5392 * but some drivers support e.g. pixel format changes through the pageflip
5395 * Called by the user via ioctl.
5398 * Zero on success, negative errno on failure.
5400 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
5401 void *data
, struct drm_file
*file_priv
)
5403 struct drm_mode_crtc_page_flip
*page_flip
= data
;
5404 struct drm_crtc
*crtc
;
5405 struct drm_framebuffer
*fb
= NULL
;
5406 struct drm_pending_vblank_event
*e
= NULL
;
5409 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
5410 page_flip
->reserved
!= 0)
5413 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
5416 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
5420 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
5421 if (crtc
->primary
->fb
== NULL
) {
5422 /* The framebuffer is currently unbound, presumably
5423 * due to a hotplug event, that userspace has not
5430 if (crtc
->funcs
->page_flip
== NULL
)
5433 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
5440 const struct drm_plane_state
*state
= crtc
->primary
->state
;
5442 ret
= check_src_coords(state
->src_x
, state
->src_y
,
5443 state
->src_w
, state
->src_h
, fb
);
5445 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
5450 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
5451 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5456 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5457 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
5462 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
5463 e
->event
.base
.length
= sizeof(e
->event
);
5464 e
->event
.user_data
= page_flip
->user_data
;
5465 ret
= drm_event_reserve_init(dev
, file_priv
, &e
->base
, &e
->event
.base
);
5472 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
5473 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
5475 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
)
5476 drm_event_cancel_free(dev
, &e
->base
);
5477 /* Keep the old fb, don't unref it. */
5478 crtc
->primary
->old_fb
= NULL
;
5480 crtc
->primary
->fb
= fb
;
5481 /* Unref only the old framebuffer. */
5487 drm_framebuffer_unreference(fb
);
5488 if (crtc
->primary
->old_fb
)
5489 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
5490 crtc
->primary
->old_fb
= NULL
;
5491 drm_modeset_unlock_crtc(crtc
);
5497 * drm_mode_config_reset - call ->reset callbacks
5500 * This functions calls all the crtc's, encoder's and connector's ->reset
5501 * callback. Drivers can use this in e.g. their driver load or resume code to
5502 * reset hardware and software state.
5504 void drm_mode_config_reset(struct drm_device
*dev
)
5506 struct drm_crtc
*crtc
;
5507 struct drm_plane
*plane
;
5508 struct drm_encoder
*encoder
;
5509 struct drm_connector
*connector
;
5511 drm_for_each_plane(plane
, dev
)
5512 if (plane
->funcs
->reset
)
5513 plane
->funcs
->reset(plane
);
5515 drm_for_each_crtc(crtc
, dev
)
5516 if (crtc
->funcs
->reset
)
5517 crtc
->funcs
->reset(crtc
);
5519 drm_for_each_encoder(encoder
, dev
)
5520 if (encoder
->funcs
->reset
)
5521 encoder
->funcs
->reset(encoder
);
5523 mutex_lock(&dev
->mode_config
.mutex
);
5524 drm_for_each_connector(connector
, dev
)
5525 if (connector
->funcs
->reset
)
5526 connector
->funcs
->reset(connector
);
5527 mutex_unlock(&dev
->mode_config
.mutex
);
5529 EXPORT_SYMBOL(drm_mode_config_reset
);
5532 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5535 * @file_priv: DRM file info
5537 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5538 * TTM or something else entirely) and returns the resulting buffer handle. This
5539 * handle can then be wrapped up into a framebuffer modeset object.
5541 * Note that userspace is not allowed to use such objects for render
5542 * acceleration - drivers must create their own private ioctls for such a use
5545 * Called by the user via ioctl.
5548 * Zero on success, negative errno on failure.
5550 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
5551 void *data
, struct drm_file
*file_priv
)
5553 struct drm_mode_create_dumb
*args
= data
;
5554 u32 cpp
, stride
, size
;
5556 if (!dev
->driver
->dumb_create
)
5558 if (!args
->width
|| !args
->height
|| !args
->bpp
)
5561 /* overflow checks for 32bit size calculations */
5562 /* NOTE: DIV_ROUND_UP() can overflow */
5563 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
5564 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
5566 stride
= cpp
* args
->width
;
5567 if (args
->height
> 0xffffffffU
/ stride
)
5570 /* test for wrap-around */
5571 size
= args
->height
* stride
;
5572 if (PAGE_ALIGN(size
) == 0)
5576 * handle, pitch and size are output parameters. Zero them out to
5577 * prevent drivers from accidentally using uninitialized data. Since
5578 * not all existing userspace is clearing these fields properly we
5579 * cannot reject IOCTL with garbage in them.
5585 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
5589 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5592 * @file_priv: DRM file info
5594 * Allocate an offset in the drm device node's address space to be able to
5595 * memory map a dumb buffer.
5597 * Called by the user via ioctl.
5600 * Zero on success, negative errno on failure.
5602 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
5603 void *data
, struct drm_file
*file_priv
)
5605 struct drm_mode_map_dumb
*args
= data
;
5607 /* call driver ioctl to get mmap offset */
5608 if (!dev
->driver
->dumb_map_offset
)
5611 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
5615 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5618 * @file_priv: DRM file info
5620 * This destroys the userspace handle for the given dumb backing storage buffer.
5621 * Since buffer objects must be reference counted in the kernel a buffer object
5622 * won't be immediately freed if a framebuffer modeset object still uses it.
5624 * Called by the user via ioctl.
5627 * Zero on success, negative errno on failure.
5629 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
5630 void *data
, struct drm_file
*file_priv
)
5632 struct drm_mode_destroy_dumb
*args
= data
;
5634 if (!dev
->driver
->dumb_destroy
)
5637 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
5641 * drm_rotation_simplify() - Try to simplify the rotation
5642 * @rotation: Rotation to be simplified
5643 * @supported_rotations: Supported rotations
5645 * Attempt to simplify the rotation to a form that is supported.
5646 * Eg. if the hardware supports everything except DRM_REFLECT_X
5647 * one could call this function like this:
5649 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5650 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5651 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5653 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5654 * transforms the hardware supports, this function may not
5655 * be able to produce a supported transform, so the caller should
5656 * check the result afterwards.
5658 unsigned int drm_rotation_simplify(unsigned int rotation
,
5659 unsigned int supported_rotations
)
5661 if (rotation
& ~supported_rotations
) {
5662 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5663 rotation
= (rotation
& DRM_REFLECT_MASK
) |
5664 BIT((ffs(rotation
& DRM_ROTATE_MASK
) + 1) % 4);
5669 EXPORT_SYMBOL(drm_rotation_simplify
);
5672 * drm_mode_config_init - initialize DRM mode_configuration structure
5675 * Initialize @dev's mode_config structure, used for tracking the graphics
5676 * configuration of @dev.
5678 * Since this initializes the modeset locks, no locking is possible. Which is no
5679 * problem, since this should happen single threaded at init time. It is the
5680 * driver's problem to ensure this guarantee.
5683 void drm_mode_config_init(struct drm_device
*dev
)
5685 mutex_init(&dev
->mode_config
.mutex
);
5686 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5687 mutex_init(&dev
->mode_config
.idr_mutex
);
5688 mutex_init(&dev
->mode_config
.fb_lock
);
5689 mutex_init(&dev
->mode_config
.blob_lock
);
5690 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5691 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5692 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5693 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5694 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5695 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5696 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5697 idr_init(&dev
->mode_config
.crtc_idr
);
5698 idr_init(&dev
->mode_config
.tile_idr
);
5699 ida_init(&dev
->mode_config
.connector_ida
);
5701 drm_modeset_lock_all(dev
);
5702 drm_mode_create_standard_properties(dev
);
5703 drm_modeset_unlock_all(dev
);
5705 /* Just to be sure */
5706 dev
->mode_config
.num_fb
= 0;
5707 dev
->mode_config
.num_connector
= 0;
5708 dev
->mode_config
.num_crtc
= 0;
5709 dev
->mode_config
.num_encoder
= 0;
5710 dev
->mode_config
.num_overlay_plane
= 0;
5711 dev
->mode_config
.num_total_plane
= 0;
5713 EXPORT_SYMBOL(drm_mode_config_init
);
5716 * drm_mode_config_cleanup - free up DRM mode_config info
5719 * Free up all the connectors and CRTCs associated with this DRM device, then
5720 * free up the framebuffers and associated buffer objects.
5722 * Note that since this /should/ happen single-threaded at driver/device
5723 * teardown time, no locking is required. It's the driver's job to ensure that
5724 * this guarantee actually holds true.
5726 * FIXME: cleanup any dangling user buffer objects too
5728 void drm_mode_config_cleanup(struct drm_device
*dev
)
5730 struct drm_connector
*connector
, *ot
;
5731 struct drm_crtc
*crtc
, *ct
;
5732 struct drm_encoder
*encoder
, *enct
;
5733 struct drm_framebuffer
*fb
, *fbt
;
5734 struct drm_property
*property
, *pt
;
5735 struct drm_property_blob
*blob
, *bt
;
5736 struct drm_plane
*plane
, *plt
;
5738 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5740 encoder
->funcs
->destroy(encoder
);
5743 list_for_each_entry_safe(connector
, ot
,
5744 &dev
->mode_config
.connector_list
, head
) {
5745 connector
->funcs
->destroy(connector
);
5748 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5750 drm_property_destroy(dev
, property
);
5753 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5755 plane
->funcs
->destroy(plane
);
5758 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5759 crtc
->funcs
->destroy(crtc
);
5762 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5764 drm_property_unreference_blob(blob
);
5768 * Single-threaded teardown context, so it's not required to grab the
5769 * fb_lock to protect against concurrent fb_list access. Contrary, it
5770 * would actually deadlock with the drm_framebuffer_cleanup function.
5772 * Also, if there are any framebuffers left, that's a driver leak now,
5773 * so politely WARN about this.
5775 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5776 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5777 drm_framebuffer_free(&fb
->base
.refcount
);
5780 ida_destroy(&dev
->mode_config
.connector_ida
);
5781 idr_destroy(&dev
->mode_config
.tile_idr
);
5782 idr_destroy(&dev
->mode_config
.crtc_idr
);
5783 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5785 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5787 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5788 unsigned int supported_rotations
)
5790 static const struct drm_prop_enum_list props
[] = {
5791 { DRM_ROTATE_0
, "rotate-0" },
5792 { DRM_ROTATE_90
, "rotate-90" },
5793 { DRM_ROTATE_180
, "rotate-180" },
5794 { DRM_ROTATE_270
, "rotate-270" },
5795 { DRM_REFLECT_X
, "reflect-x" },
5796 { DRM_REFLECT_Y
, "reflect-y" },
5799 return drm_property_create_bitmask(dev
, 0, "rotation",
5800 props
, ARRAY_SIZE(props
),
5801 supported_rotations
);
5803 EXPORT_SYMBOL(drm_mode_create_rotation_property
);
5808 * Tile groups are used to represent tiled monitors with a unique
5809 * integer identifier. Tiled monitors using DisplayID v1.3 have
5810 * a unique 8-byte handle, we store this in a tile group, so we
5811 * have a common identifier for all tiles in a monitor group.
5813 static void drm_tile_group_free(struct kref
*kref
)
5815 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
5816 struct drm_device
*dev
= tg
->dev
;
5817 mutex_lock(&dev
->mode_config
.idr_mutex
);
5818 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
5819 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5824 * drm_mode_put_tile_group - drop a reference to a tile group.
5826 * @tg: tile group to drop reference to.
5828 * drop reference to tile group and free if 0.
5830 void drm_mode_put_tile_group(struct drm_device
*dev
,
5831 struct drm_tile_group
*tg
)
5833 kref_put(&tg
->refcount
, drm_tile_group_free
);
5837 * drm_mode_get_tile_group - get a reference to an existing tile group
5839 * @topology: 8-bytes unique per monitor.
5841 * Use the unique bytes to get a reference to an existing tile group.
5844 * tile group or NULL if not found.
5846 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
5849 struct drm_tile_group
*tg
;
5851 mutex_lock(&dev
->mode_config
.idr_mutex
);
5852 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
5853 if (!memcmp(tg
->group_data
, topology
, 8)) {
5854 if (!kref_get_unless_zero(&tg
->refcount
))
5856 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5860 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5863 EXPORT_SYMBOL(drm_mode_get_tile_group
);
5866 * drm_mode_create_tile_group - create a tile group from a displayid description
5868 * @topology: 8-bytes unique per monitor.
5870 * Create a tile group for the unique monitor, and get a unique
5871 * identifier for the tile group.
5874 * new tile group or error.
5876 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
5879 struct drm_tile_group
*tg
;
5882 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
5884 return ERR_PTR(-ENOMEM
);
5886 kref_init(&tg
->refcount
);
5887 memcpy(tg
->group_data
, topology
, 8);
5890 mutex_lock(&dev
->mode_config
.idr_mutex
);
5891 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
5899 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5902 EXPORT_SYMBOL(drm_mode_create_tile_group
);
5905 * drm_crtc_enable_color_mgmt - enable color management properties
5907 * @degamma_lut_size: the size of the degamma lut (before CSC)
5908 * @has_ctm: whether to attach ctm_property for CSC matrix
5909 * @gamma_lut_size: the size of the gamma lut (after CSC)
5911 * This function lets the driver enable the color correction
5912 * properties on a CRTC. This includes 3 degamma, csc and gamma
5913 * properties that userspace can set and 2 size properties to inform
5914 * the userspace of the lut sizes. Each of the properties are
5915 * optional. The gamma and degamma properties are only attached if
5916 * their size is not 0 and ctm_property is only attached if has_ctm is
5919 void drm_crtc_enable_color_mgmt(struct drm_crtc
*crtc
,
5920 uint degamma_lut_size
,
5922 uint gamma_lut_size
)
5924 struct drm_device
*dev
= crtc
->dev
;
5925 struct drm_mode_config
*config
= &dev
->mode_config
;
5927 if (degamma_lut_size
) {
5928 drm_object_attach_property(&crtc
->base
,
5929 config
->degamma_lut_property
, 0);
5930 drm_object_attach_property(&crtc
->base
,
5931 config
->degamma_lut_size_property
,
5936 drm_object_attach_property(&crtc
->base
,
5937 config
->ctm_property
, 0);
5939 if (gamma_lut_size
) {
5940 drm_object_attach_property(&crtc
->base
,
5941 config
->gamma_lut_property
, 0);
5942 drm_object_attach_property(&crtc
->base
,
5943 config
->gamma_lut_size_property
,
5947 EXPORT_SYMBOL(drm_crtc_enable_color_mgmt
);