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>
43 #include "drm_crtc_internal.h"
44 #include "drm_internal.h"
46 static struct drm_framebuffer
*
47 internal_framebuffer_create(struct drm_device
*dev
,
48 struct drm_mode_fb_cmd2
*r
,
49 struct drm_file
*file_priv
);
51 /* Avoid boilerplate. I'm tired of typing. */
52 #define DRM_ENUM_NAME_FN(fnname, list) \
53 const char *fnname(int val) \
56 for (i = 0; i < ARRAY_SIZE(list); i++) { \
57 if (list[i].type == val) \
58 return list[i].name; \
66 static const struct drm_prop_enum_list drm_dpms_enum_list
[] = {
67 { DRM_MODE_DPMS_ON
, "On" },
68 { DRM_MODE_DPMS_STANDBY
, "Standby" },
69 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
70 { DRM_MODE_DPMS_OFF
, "Off" }
73 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
75 static const struct drm_prop_enum_list drm_plane_type_enum_list
[] = {
76 { DRM_PLANE_TYPE_OVERLAY
, "Overlay" },
77 { DRM_PLANE_TYPE_PRIMARY
, "Primary" },
78 { DRM_PLANE_TYPE_CURSOR
, "Cursor" },
84 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] = {
85 { DRM_MODE_SCALE_NONE
, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
87 { DRM_MODE_SCALE_CENTER
, "Center" },
88 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list
[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE
, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3
, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9
, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list
[] = {
101 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
102 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
103 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
106 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
108 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] = {
109 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
110 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
111 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
114 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
115 drm_dvi_i_subconnector_enum_list
)
117 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] = {
118 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
122 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
125 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
127 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] = {
128 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
129 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
132 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
135 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
136 drm_tv_subconnector_enum_list
)
138 static const struct drm_prop_enum_list drm_dirty_info_enum_list
[] = {
139 { DRM_MODE_DIRTY_OFF
, "Off" },
140 { DRM_MODE_DIRTY_ON
, "On" },
141 { DRM_MODE_DIRTY_ANNOTATE
, "Annotate" },
144 struct drm_conn_prop_enum_list
{
151 * Connector and encoder types.
153 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] = {
154 { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
155 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
156 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
157 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
158 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
159 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
160 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
161 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
162 { DRM_MODE_CONNECTOR_Component
, "Component" },
163 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
164 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
165 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
166 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
167 { DRM_MODE_CONNECTOR_TV
, "TV" },
168 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
169 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
170 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
173 static const struct drm_prop_enum_list drm_encoder_enum_list
[] = {
174 { DRM_MODE_ENCODER_NONE
, "None" },
175 { DRM_MODE_ENCODER_DAC
, "DAC" },
176 { DRM_MODE_ENCODER_TMDS
, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS
, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC
, "TV" },
179 { DRM_MODE_ENCODER_VIRTUAL
, "Virtual" },
180 { DRM_MODE_ENCODER_DSI
, "DSI" },
181 { DRM_MODE_ENCODER_DPMST
, "DP MST" },
184 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] = {
185 { SubPixelUnknown
, "Unknown" },
186 { SubPixelHorizontalRGB
, "Horizontal RGB" },
187 { SubPixelHorizontalBGR
, "Horizontal BGR" },
188 { SubPixelVerticalRGB
, "Vertical RGB" },
189 { SubPixelVerticalBGR
, "Vertical BGR" },
190 { SubPixelNone
, "None" },
193 void drm_connector_ida_init(void)
197 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
198 ida_init(&drm_connector_enum_list
[i
].ida
);
201 void drm_connector_ida_destroy(void)
205 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
206 ida_destroy(&drm_connector_enum_list
[i
].ida
);
210 * drm_get_connector_status_name - return a string for connector status
211 * @status: connector status to compute name of
213 * In contrast to the other drm_get_*_name functions this one here returns a
214 * const pointer and hence is threadsafe.
216 const char *drm_get_connector_status_name(enum drm_connector_status status
)
218 if (status
== connector_status_connected
)
220 else if (status
== connector_status_disconnected
)
221 return "disconnected";
225 EXPORT_SYMBOL(drm_get_connector_status_name
);
228 * drm_get_subpixel_order_name - return a string for a given subpixel enum
229 * @order: enum of subpixel_order
231 * Note you could abuse this and return something out of bounds, but that
232 * would be a caller error. No unscrubbed user data should make it here.
234 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
236 return drm_subpixel_enum_list
[order
].name
;
238 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
240 static char printable_char(int c
)
242 return isascii(c
) && isprint(c
) ? c
: '?';
246 * drm_get_format_name - return a string for drm fourcc format
247 * @format: format to compute name of
249 * Note that the buffer used by this function is globally shared and owned by
250 * the function itself.
252 * FIXME: This isn't really multithreading safe.
254 const char *drm_get_format_name(uint32_t format
)
258 snprintf(buf
, sizeof(buf
),
259 "%c%c%c%c %s-endian (0x%08x)",
260 printable_char(format
& 0xff),
261 printable_char((format
>> 8) & 0xff),
262 printable_char((format
>> 16) & 0xff),
263 printable_char((format
>> 24) & 0x7f),
264 format
& DRM_FORMAT_BIG_ENDIAN
? "big" : "little",
269 EXPORT_SYMBOL(drm_get_format_name
);
272 * Internal function to assign a slot in the object idr and optionally
273 * register the object into the idr.
275 static int drm_mode_object_get_reg(struct drm_device
*dev
,
276 struct drm_mode_object
*obj
,
282 mutex_lock(&dev
->mode_config
.idr_mutex
);
283 ret
= idr_alloc(&dev
->mode_config
.crtc_idr
, register_obj
? obj
: NULL
, 1, 0, GFP_KERNEL
);
286 * Set up the object linking under the protection of the idr
287 * lock so that other users can't see inconsistent state.
290 obj
->type
= obj_type
;
292 mutex_unlock(&dev
->mode_config
.idr_mutex
);
294 return ret
< 0 ? ret
: 0;
298 * drm_mode_object_get - allocate a new modeset identifier
300 * @obj: object pointer, used to generate unique ID
301 * @obj_type: object type
303 * Create a unique identifier based on @ptr in @dev's identifier space. Used
304 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
305 * modeset identifiers are _not_ reference counted. Hence don't use this for
306 * reference counted modeset objects like framebuffers.
309 * New unique (relative to other objects in @dev) integer identifier for the
312 int drm_mode_object_get(struct drm_device
*dev
,
313 struct drm_mode_object
*obj
, uint32_t obj_type
)
315 return drm_mode_object_get_reg(dev
, obj
, obj_type
, true);
318 static void drm_mode_object_register(struct drm_device
*dev
,
319 struct drm_mode_object
*obj
)
321 mutex_lock(&dev
->mode_config
.idr_mutex
);
322 idr_replace(&dev
->mode_config
.crtc_idr
, obj
, obj
->id
);
323 mutex_unlock(&dev
->mode_config
.idr_mutex
);
327 * drm_mode_object_put - free a modeset identifer
329 * @object: object to free
331 * Free @id from @dev's unique identifier pool. Note that despite the _get
332 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
333 * for reference counted modeset objects like framebuffers.
335 void drm_mode_object_put(struct drm_device
*dev
,
336 struct drm_mode_object
*object
)
338 mutex_lock(&dev
->mode_config
.idr_mutex
);
339 idr_remove(&dev
->mode_config
.crtc_idr
, object
->id
);
340 mutex_unlock(&dev
->mode_config
.idr_mutex
);
343 static struct drm_mode_object
*_object_find(struct drm_device
*dev
,
344 uint32_t id
, uint32_t type
)
346 struct drm_mode_object
*obj
= NULL
;
348 mutex_lock(&dev
->mode_config
.idr_mutex
);
349 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
350 if (obj
&& type
!= DRM_MODE_OBJECT_ANY
&& obj
->type
!= type
)
352 if (obj
&& obj
->id
!= id
)
354 /* don't leak out unref'd fb's */
356 (obj
->type
== DRM_MODE_OBJECT_FB
||
357 obj
->type
== DRM_MODE_OBJECT_BLOB
))
359 mutex_unlock(&dev
->mode_config
.idr_mutex
);
365 * drm_mode_object_find - look up a drm object with static lifetime
367 * @id: id of the mode object
368 * @type: type of the mode object
370 * Note that framebuffers cannot be looked up with this functions - since those
371 * are reference counted, they need special treatment. Even with
372 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
373 * rather than WARN_ON()).
375 struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
376 uint32_t id
, uint32_t type
)
378 struct drm_mode_object
*obj
= NULL
;
380 /* Framebuffers are reference counted and need their own lookup
382 WARN_ON(type
== DRM_MODE_OBJECT_FB
|| type
== DRM_MODE_OBJECT_BLOB
);
383 obj
= _object_find(dev
, id
, type
);
386 EXPORT_SYMBOL(drm_mode_object_find
);
389 * drm_framebuffer_init - initialize a framebuffer
391 * @fb: framebuffer to be initialized
392 * @funcs: ... with these functions
394 * Allocates an ID for the framebuffer's parent mode object, sets its mode
395 * functions & device file and adds it to the master fd list.
398 * This functions publishes the fb and makes it available for concurrent access
399 * by other users. Which means by this point the fb _must_ be fully set up -
400 * since all the fb attributes are invariant over its lifetime, no further
401 * locking but only correct reference counting is required.
404 * Zero on success, error code on failure.
406 int drm_framebuffer_init(struct drm_device
*dev
, struct drm_framebuffer
*fb
,
407 const struct drm_framebuffer_funcs
*funcs
)
411 mutex_lock(&dev
->mode_config
.fb_lock
);
412 kref_init(&fb
->refcount
);
413 INIT_LIST_HEAD(&fb
->filp_head
);
417 ret
= drm_mode_object_get(dev
, &fb
->base
, DRM_MODE_OBJECT_FB
);
421 dev
->mode_config
.num_fb
++;
422 list_add(&fb
->head
, &dev
->mode_config
.fb_list
);
424 mutex_unlock(&dev
->mode_config
.fb_lock
);
428 EXPORT_SYMBOL(drm_framebuffer_init
);
430 /* dev->mode_config.fb_lock must be held! */
431 static void __drm_framebuffer_unregister(struct drm_device
*dev
,
432 struct drm_framebuffer
*fb
)
434 mutex_lock(&dev
->mode_config
.idr_mutex
);
435 idr_remove(&dev
->mode_config
.crtc_idr
, fb
->base
.id
);
436 mutex_unlock(&dev
->mode_config
.idr_mutex
);
441 static void drm_framebuffer_free(struct kref
*kref
)
443 struct drm_framebuffer
*fb
=
444 container_of(kref
, struct drm_framebuffer
, refcount
);
445 struct drm_device
*dev
= fb
->dev
;
448 * The lookup idr holds a weak reference, which has not necessarily been
449 * removed at this point. Check for that.
451 mutex_lock(&dev
->mode_config
.fb_lock
);
453 /* Mark fb as reaped and drop idr ref. */
454 __drm_framebuffer_unregister(dev
, fb
);
456 mutex_unlock(&dev
->mode_config
.fb_lock
);
458 fb
->funcs
->destroy(fb
);
461 static struct drm_framebuffer
*__drm_framebuffer_lookup(struct drm_device
*dev
,
464 struct drm_mode_object
*obj
= NULL
;
465 struct drm_framebuffer
*fb
;
467 mutex_lock(&dev
->mode_config
.idr_mutex
);
468 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
469 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_FB
) || (obj
->id
!= id
))
473 mutex_unlock(&dev
->mode_config
.idr_mutex
);
479 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
481 * @id: id of the fb object
483 * If successful, this grabs an additional reference to the framebuffer -
484 * callers need to make sure to eventually unreference the returned framebuffer
485 * again, using @drm_framebuffer_unreference.
487 struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
490 struct drm_framebuffer
*fb
;
492 mutex_lock(&dev
->mode_config
.fb_lock
);
493 fb
= __drm_framebuffer_lookup(dev
, id
);
495 if (!kref_get_unless_zero(&fb
->refcount
))
498 mutex_unlock(&dev
->mode_config
.fb_lock
);
502 EXPORT_SYMBOL(drm_framebuffer_lookup
);
505 * drm_framebuffer_unreference - unref a framebuffer
506 * @fb: framebuffer to unref
508 * This functions decrements the fb's refcount and frees it if it drops to zero.
510 void drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
512 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
513 kref_put(&fb
->refcount
, drm_framebuffer_free
);
515 EXPORT_SYMBOL(drm_framebuffer_unreference
);
518 * drm_framebuffer_reference - incr the fb refcnt
521 * This functions increments the fb's refcount.
523 void drm_framebuffer_reference(struct drm_framebuffer
*fb
)
525 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
526 kref_get(&fb
->refcount
);
528 EXPORT_SYMBOL(drm_framebuffer_reference
);
531 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
532 * @fb: fb to unregister
534 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
535 * those used for fbdev. Note that the caller must hold a reference of it's own,
536 * i.e. the object may not be destroyed through this call (since it'll lead to a
537 * locking inversion).
539 void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
)
541 struct drm_device
*dev
= fb
->dev
;
543 mutex_lock(&dev
->mode_config
.fb_lock
);
544 /* Mark fb as reaped and drop idr ref. */
545 __drm_framebuffer_unregister(dev
, fb
);
546 mutex_unlock(&dev
->mode_config
.fb_lock
);
548 EXPORT_SYMBOL(drm_framebuffer_unregister_private
);
551 * drm_framebuffer_cleanup - remove a framebuffer object
552 * @fb: framebuffer to remove
554 * Cleanup framebuffer. This function is intended to be used from the drivers
555 * ->destroy callback. It can also be used to clean up driver private
556 * framebuffers embedded into a larger structure.
558 * Note that this function does not remove the fb from active usuage - if it is
559 * still used anywhere, hilarity can ensue since userspace could call getfb on
560 * the id and get back -EINVAL. Obviously no concern at driver unload time.
562 * Also, the framebuffer will not be removed from the lookup idr - for
563 * user-created framebuffers this will happen in in the rmfb ioctl. For
564 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
565 * drm_framebuffer_unregister_private.
567 void drm_framebuffer_cleanup(struct drm_framebuffer
*fb
)
569 struct drm_device
*dev
= fb
->dev
;
571 mutex_lock(&dev
->mode_config
.fb_lock
);
573 dev
->mode_config
.num_fb
--;
574 mutex_unlock(&dev
->mode_config
.fb_lock
);
576 EXPORT_SYMBOL(drm_framebuffer_cleanup
);
579 * drm_framebuffer_remove - remove and unreference a framebuffer object
580 * @fb: framebuffer to remove
582 * Scans all the CRTCs and planes in @dev's mode_config. If they're
583 * using @fb, removes it, setting it to NULL. Then drops the reference to the
584 * passed-in framebuffer. Might take the modeset locks.
586 * Note that this function optimizes the cleanup away if the caller holds the
587 * last reference to the framebuffer. It is also guaranteed to not take the
588 * modeset locks in this case.
590 void drm_framebuffer_remove(struct drm_framebuffer
*fb
)
592 struct drm_device
*dev
= fb
->dev
;
593 struct drm_crtc
*crtc
;
594 struct drm_plane
*plane
;
595 struct drm_mode_set set
;
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 (atomic_read(&fb
->refcount
.refcount
) > 1) {
616 drm_modeset_lock_all(dev
);
617 /* remove from any CRTC */
618 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
619 if (crtc
->primary
->fb
== fb
) {
620 /* should turn off the crtc */
621 memset(&set
, 0, sizeof(struct drm_mode_set
));
624 ret
= drm_mode_set_config_internal(&set
);
626 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc
);
630 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
) {
632 drm_plane_force_disable(plane
);
634 drm_modeset_unlock_all(dev
);
637 drm_framebuffer_unreference(fb
);
639 EXPORT_SYMBOL(drm_framebuffer_remove
);
641 DEFINE_WW_CLASS(crtc_ww_class
);
644 * drm_crtc_init_with_planes - Initialise a new CRTC object with
645 * specified primary and cursor planes.
647 * @crtc: CRTC object to init
648 * @primary: Primary plane for CRTC
649 * @cursor: Cursor plane for CRTC
650 * @funcs: callbacks for the new CRTC
652 * Inits a new object created as base part of a driver crtc object.
655 * Zero on success, error code on failure.
657 int drm_crtc_init_with_planes(struct drm_device
*dev
, struct drm_crtc
*crtc
,
658 struct drm_plane
*primary
,
659 struct drm_plane
*cursor
,
660 const struct drm_crtc_funcs
*funcs
)
662 struct drm_mode_config
*config
= &dev
->mode_config
;
665 WARN_ON(primary
&& primary
->type
!= DRM_PLANE_TYPE_PRIMARY
);
666 WARN_ON(cursor
&& cursor
->type
!= DRM_PLANE_TYPE_CURSOR
);
670 crtc
->invert_dimensions
= false;
672 drm_modeset_lock_init(&crtc
->mutex
);
673 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
677 crtc
->base
.properties
= &crtc
->properties
;
679 list_add_tail(&crtc
->head
, &config
->crtc_list
);
682 crtc
->primary
= primary
;
683 crtc
->cursor
= cursor
;
685 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
687 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
689 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
690 drm_object_attach_property(&crtc
->base
, config
->prop_active
, 0);
691 drm_object_attach_property(&crtc
->base
, config
->prop_mode_id
, 0);
696 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
699 * drm_crtc_cleanup - Clean up the core crtc usage
700 * @crtc: CRTC to cleanup
702 * This function cleans up @crtc and removes it from the DRM mode setting
703 * core. Note that the function does *not* free the crtc structure itself,
704 * this is the responsibility of the caller.
706 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
708 struct drm_device
*dev
= crtc
->dev
;
710 kfree(crtc
->gamma_store
);
711 crtc
->gamma_store
= NULL
;
713 drm_modeset_lock_fini(&crtc
->mutex
);
715 drm_mode_object_put(dev
, &crtc
->base
);
716 list_del(&crtc
->head
);
717 dev
->mode_config
.num_crtc
--;
719 WARN_ON(crtc
->state
&& !crtc
->funcs
->atomic_destroy_state
);
720 if (crtc
->state
&& crtc
->funcs
->atomic_destroy_state
)
721 crtc
->funcs
->atomic_destroy_state(crtc
, crtc
->state
);
723 memset(crtc
, 0, sizeof(*crtc
));
725 EXPORT_SYMBOL(drm_crtc_cleanup
);
728 * drm_crtc_index - find the index of a registered CRTC
729 * @crtc: CRTC to find index for
731 * Given a registered CRTC, return the index of that CRTC within a DRM
732 * device's list of CRTCs.
734 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
736 unsigned int index
= 0;
737 struct drm_crtc
*tmp
;
739 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
748 EXPORT_SYMBOL(drm_crtc_index
);
751 * drm_mode_remove - remove and free a mode
752 * @connector: connector list to modify
753 * @mode: mode to remove
755 * Remove @mode from @connector's mode list, then free it.
757 static void drm_mode_remove(struct drm_connector
*connector
,
758 struct drm_display_mode
*mode
)
760 list_del(&mode
->head
);
761 drm_mode_destroy(connector
->dev
, mode
);
765 * drm_display_info_set_bus_formats - set the supported bus formats
766 * @info: display info to store bus formats in
767 * @formats: array containing the supported bus formats
768 * @num_formats: the number of entries in the fmts array
770 * Store the supported bus formats in display info structure.
771 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
772 * a full list of available formats.
774 int drm_display_info_set_bus_formats(struct drm_display_info
*info
,
776 unsigned int num_formats
)
780 if (!formats
&& num_formats
)
783 if (formats
&& num_formats
) {
784 fmts
= kmemdup(formats
, sizeof(*formats
) * num_formats
,
790 kfree(info
->bus_formats
);
791 info
->bus_formats
= fmts
;
792 info
->num_bus_formats
= num_formats
;
796 EXPORT_SYMBOL(drm_display_info_set_bus_formats
);
799 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
800 * @connector: connector to quwery
802 * The kernel supports per-connector configration of its consoles through
803 * use of the video= parameter. This function parses that option and
804 * extracts the user's specified mode (or enable/disable status) for a
805 * particular connector. This is typically only used during the early fbdev
808 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
810 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
813 if (fb_get_options(connector
->name
, &option
))
816 if (!drm_mode_parse_command_line_for_connector(option
,
824 switch (mode
->force
) {
828 case DRM_FORCE_ON_DIGITAL
:
837 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
838 connector
->force
= mode
->force
;
841 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
843 mode
->xres
, mode
->yres
,
844 mode
->refresh_specified
? mode
->refresh
: 60,
845 mode
->rb
? " reduced blanking" : "",
846 mode
->margins
? " with margins" : "",
847 mode
->interlace
? " interlaced" : "");
851 * drm_connector_init - Init a preallocated connector
853 * @connector: the connector to init
854 * @funcs: callbacks for this connector
855 * @connector_type: user visible type of the connector
857 * Initialises a preallocated connector. Connectors should be
858 * subclassed as part of driver connector objects.
861 * Zero on success, error code on failure.
863 int drm_connector_init(struct drm_device
*dev
,
864 struct drm_connector
*connector
,
865 const struct drm_connector_funcs
*funcs
,
868 struct drm_mode_config
*config
= &dev
->mode_config
;
870 struct ida
*connector_ida
=
871 &drm_connector_enum_list
[connector_type
].ida
;
873 drm_modeset_lock_all(dev
);
875 ret
= drm_mode_object_get_reg(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
, false);
879 connector
->base
.properties
= &connector
->properties
;
880 connector
->dev
= dev
;
881 connector
->funcs
= funcs
;
882 connector
->connector_type
= connector_type
;
883 connector
->connector_type_id
=
884 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
885 if (connector
->connector_type_id
< 0) {
886 ret
= connector
->connector_type_id
;
890 kasprintf(GFP_KERNEL
, "%s-%d",
891 drm_connector_enum_list
[connector_type
].name
,
892 connector
->connector_type_id
);
893 if (!connector
->name
) {
898 INIT_LIST_HEAD(&connector
->probed_modes
);
899 INIT_LIST_HEAD(&connector
->modes
);
900 connector
->edid_blob_ptr
= NULL
;
901 connector
->status
= connector_status_unknown
;
903 drm_connector_get_cmdline_mode(connector
);
905 /* We should add connectors at the end to avoid upsetting the connector
907 list_add_tail(&connector
->head
, &config
->connector_list
);
908 config
->num_connector
++;
910 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
911 drm_object_attach_property(&connector
->base
,
912 config
->edid_property
,
915 drm_object_attach_property(&connector
->base
,
916 config
->dpms_property
, 0);
918 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
919 drm_object_attach_property(&connector
->base
, config
->prop_crtc_id
, 0);
922 connector
->debugfs_entry
= NULL
;
926 drm_mode_object_put(dev
, &connector
->base
);
929 drm_modeset_unlock_all(dev
);
933 EXPORT_SYMBOL(drm_connector_init
);
936 * drm_connector_cleanup - cleans up an initialised connector
937 * @connector: connector to cleanup
939 * Cleans up the connector but doesn't free the object.
941 void drm_connector_cleanup(struct drm_connector
*connector
)
943 struct drm_device
*dev
= connector
->dev
;
944 struct drm_display_mode
*mode
, *t
;
946 if (connector
->tile_group
) {
947 drm_mode_put_tile_group(dev
, connector
->tile_group
);
948 connector
->tile_group
= NULL
;
951 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
952 drm_mode_remove(connector
, mode
);
954 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
955 drm_mode_remove(connector
, mode
);
957 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
958 connector
->connector_type_id
);
960 kfree(connector
->display_info
.bus_formats
);
961 drm_mode_object_put(dev
, &connector
->base
);
962 kfree(connector
->name
);
963 connector
->name
= NULL
;
964 list_del(&connector
->head
);
965 dev
->mode_config
.num_connector
--;
967 WARN_ON(connector
->state
&& !connector
->funcs
->atomic_destroy_state
);
968 if (connector
->state
&& connector
->funcs
->atomic_destroy_state
)
969 connector
->funcs
->atomic_destroy_state(connector
,
972 memset(connector
, 0, sizeof(*connector
));
974 EXPORT_SYMBOL(drm_connector_cleanup
);
977 * drm_connector_index - find the index of a registered connector
978 * @connector: connector to find index for
980 * Given a registered connector, return the index of that connector within a DRM
981 * device's list of connectors.
983 unsigned int drm_connector_index(struct drm_connector
*connector
)
985 unsigned int index
= 0;
986 struct drm_connector
*tmp
;
987 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
989 WARN_ON(!drm_modeset_is_locked(&config
->connection_mutex
));
991 list_for_each_entry(tmp
, &connector
->dev
->mode_config
.connector_list
, head
) {
992 if (tmp
== connector
)
1000 EXPORT_SYMBOL(drm_connector_index
);
1003 * drm_connector_register - register a connector
1004 * @connector: the connector to register
1006 * Register userspace interfaces for a connector
1009 * Zero on success, error code on failure.
1011 int drm_connector_register(struct drm_connector
*connector
)
1015 drm_mode_object_register(connector
->dev
, &connector
->base
);
1017 ret
= drm_sysfs_connector_add(connector
);
1021 ret
= drm_debugfs_connector_add(connector
);
1023 drm_sysfs_connector_remove(connector
);
1029 EXPORT_SYMBOL(drm_connector_register
);
1032 * drm_connector_unregister - unregister a connector
1033 * @connector: the connector to unregister
1035 * Unregister userspace interfaces for a connector
1037 void drm_connector_unregister(struct drm_connector
*connector
)
1039 drm_sysfs_connector_remove(connector
);
1040 drm_debugfs_connector_remove(connector
);
1042 EXPORT_SYMBOL(drm_connector_unregister
);
1046 * drm_connector_unplug_all - unregister connector userspace interfaces
1049 * This function unregisters all connector userspace interfaces in sysfs. Should
1050 * be call when the device is disconnected, e.g. from an usb driver's
1051 * ->disconnect callback.
1053 void drm_connector_unplug_all(struct drm_device
*dev
)
1055 struct drm_connector
*connector
;
1057 /* taking the mode config mutex ends up in a clash with sysfs */
1058 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1059 drm_connector_unregister(connector
);
1062 EXPORT_SYMBOL(drm_connector_unplug_all
);
1065 * drm_encoder_init - Init a preallocated encoder
1067 * @encoder: the encoder to init
1068 * @funcs: callbacks for this encoder
1069 * @encoder_type: user visible type of the encoder
1071 * Initialises a preallocated encoder. Encoder should be
1072 * subclassed as part of driver encoder objects.
1075 * Zero on success, error code on failure.
1077 int drm_encoder_init(struct drm_device
*dev
,
1078 struct drm_encoder
*encoder
,
1079 const struct drm_encoder_funcs
*funcs
,
1084 drm_modeset_lock_all(dev
);
1086 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1091 encoder
->encoder_type
= encoder_type
;
1092 encoder
->funcs
= funcs
;
1093 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1094 drm_encoder_enum_list
[encoder_type
].name
,
1096 if (!encoder
->name
) {
1101 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1102 dev
->mode_config
.num_encoder
++;
1106 drm_mode_object_put(dev
, &encoder
->base
);
1109 drm_modeset_unlock_all(dev
);
1113 EXPORT_SYMBOL(drm_encoder_init
);
1116 * drm_encoder_cleanup - cleans up an initialised encoder
1117 * @encoder: encoder to cleanup
1119 * Cleans up the encoder but doesn't free the object.
1121 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1123 struct drm_device
*dev
= encoder
->dev
;
1125 drm_modeset_lock_all(dev
);
1126 drm_mode_object_put(dev
, &encoder
->base
);
1127 kfree(encoder
->name
);
1128 list_del(&encoder
->head
);
1129 dev
->mode_config
.num_encoder
--;
1130 drm_modeset_unlock_all(dev
);
1132 memset(encoder
, 0, sizeof(*encoder
));
1134 EXPORT_SYMBOL(drm_encoder_cleanup
);
1137 * drm_universal_plane_init - Initialize a new universal plane object
1139 * @plane: plane object to init
1140 * @possible_crtcs: bitmask of possible CRTCs
1141 * @funcs: callbacks for the new plane
1142 * @formats: array of supported formats (%DRM_FORMAT_*)
1143 * @format_count: number of elements in @formats
1144 * @type: type of plane (overlay, primary, cursor)
1146 * Initializes a plane object of type @type.
1149 * Zero on success, error code on failure.
1151 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1152 unsigned long possible_crtcs
,
1153 const struct drm_plane_funcs
*funcs
,
1154 const uint32_t *formats
, uint32_t format_count
,
1155 enum drm_plane_type type
)
1157 struct drm_mode_config
*config
= &dev
->mode_config
;
1160 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1164 drm_modeset_lock_init(&plane
->mutex
);
1166 plane
->base
.properties
= &plane
->properties
;
1168 plane
->funcs
= funcs
;
1169 plane
->format_types
= kmalloc_array(format_count
, sizeof(uint32_t),
1171 if (!plane
->format_types
) {
1172 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1173 drm_mode_object_put(dev
, &plane
->base
);
1177 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1178 plane
->format_count
= format_count
;
1179 plane
->possible_crtcs
= possible_crtcs
;
1182 list_add_tail(&plane
->head
, &config
->plane_list
);
1183 config
->num_total_plane
++;
1184 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1185 config
->num_overlay_plane
++;
1187 drm_object_attach_property(&plane
->base
,
1188 config
->plane_type_property
,
1191 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
1192 drm_object_attach_property(&plane
->base
, config
->prop_fb_id
, 0);
1193 drm_object_attach_property(&plane
->base
, config
->prop_crtc_id
, 0);
1194 drm_object_attach_property(&plane
->base
, config
->prop_crtc_x
, 0);
1195 drm_object_attach_property(&plane
->base
, config
->prop_crtc_y
, 0);
1196 drm_object_attach_property(&plane
->base
, config
->prop_crtc_w
, 0);
1197 drm_object_attach_property(&plane
->base
, config
->prop_crtc_h
, 0);
1198 drm_object_attach_property(&plane
->base
, config
->prop_src_x
, 0);
1199 drm_object_attach_property(&plane
->base
, config
->prop_src_y
, 0);
1200 drm_object_attach_property(&plane
->base
, config
->prop_src_w
, 0);
1201 drm_object_attach_property(&plane
->base
, config
->prop_src_h
, 0);
1206 EXPORT_SYMBOL(drm_universal_plane_init
);
1209 * drm_plane_init - Initialize a legacy plane
1211 * @plane: plane object to init
1212 * @possible_crtcs: bitmask of possible CRTCs
1213 * @funcs: callbacks for the new plane
1214 * @formats: array of supported formats (%DRM_FORMAT_*)
1215 * @format_count: number of elements in @formats
1216 * @is_primary: plane type (primary vs overlay)
1218 * Legacy API to initialize a DRM plane.
1220 * New drivers should call drm_universal_plane_init() instead.
1223 * Zero on success, error code on failure.
1225 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1226 unsigned long possible_crtcs
,
1227 const struct drm_plane_funcs
*funcs
,
1228 const uint32_t *formats
, uint32_t format_count
,
1231 enum drm_plane_type type
;
1233 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1234 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1235 formats
, format_count
, type
);
1237 EXPORT_SYMBOL(drm_plane_init
);
1240 * drm_plane_cleanup - Clean up the core plane usage
1241 * @plane: plane to cleanup
1243 * This function cleans up @plane and removes it from the DRM mode setting
1244 * core. Note that the function does *not* free the plane structure itself,
1245 * this is the responsibility of the caller.
1247 void drm_plane_cleanup(struct drm_plane
*plane
)
1249 struct drm_device
*dev
= plane
->dev
;
1251 drm_modeset_lock_all(dev
);
1252 kfree(plane
->format_types
);
1253 drm_mode_object_put(dev
, &plane
->base
);
1255 BUG_ON(list_empty(&plane
->head
));
1257 list_del(&plane
->head
);
1258 dev
->mode_config
.num_total_plane
--;
1259 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1260 dev
->mode_config
.num_overlay_plane
--;
1261 drm_modeset_unlock_all(dev
);
1263 WARN_ON(plane
->state
&& !plane
->funcs
->atomic_destroy_state
);
1264 if (plane
->state
&& plane
->funcs
->atomic_destroy_state
)
1265 plane
->funcs
->atomic_destroy_state(plane
, plane
->state
);
1267 memset(plane
, 0, sizeof(*plane
));
1269 EXPORT_SYMBOL(drm_plane_cleanup
);
1272 * drm_plane_index - find the index of a registered plane
1273 * @plane: plane to find index for
1275 * Given a registered plane, return the index of that CRTC within a DRM
1276 * device's list of planes.
1278 unsigned int drm_plane_index(struct drm_plane
*plane
)
1280 unsigned int index
= 0;
1281 struct drm_plane
*tmp
;
1283 list_for_each_entry(tmp
, &plane
->dev
->mode_config
.plane_list
, head
) {
1292 EXPORT_SYMBOL(drm_plane_index
);
1295 * drm_plane_from_index - find the registered plane at an index
1297 * @idx: index of registered plane to find for
1299 * Given a plane index, return the registered plane from DRM device's
1300 * list of planes with matching index.
1303 drm_plane_from_index(struct drm_device
*dev
, int idx
)
1305 struct drm_plane
*plane
;
1308 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
) {
1315 EXPORT_SYMBOL(drm_plane_from_index
);
1318 * drm_plane_force_disable - Forcibly disable a plane
1319 * @plane: plane to disable
1321 * Forces the plane to be disabled.
1323 * Used when the plane's current framebuffer is destroyed,
1324 * and when restoring fbdev mode.
1326 void drm_plane_force_disable(struct drm_plane
*plane
)
1333 plane
->old_fb
= plane
->fb
;
1334 ret
= plane
->funcs
->disable_plane(plane
);
1336 DRM_ERROR("failed to disable plane with busy fb\n");
1337 plane
->old_fb
= NULL
;
1340 /* disconnect the plane from the fb and crtc: */
1341 drm_framebuffer_unreference(plane
->old_fb
);
1342 plane
->old_fb
= NULL
;
1346 EXPORT_SYMBOL(drm_plane_force_disable
);
1348 static int drm_mode_create_standard_properties(struct drm_device
*dev
)
1350 struct drm_property
*prop
;
1353 * Standard properties (apply to all connectors)
1355 prop
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1356 DRM_MODE_PROP_IMMUTABLE
,
1360 dev
->mode_config
.edid_property
= prop
;
1362 prop
= drm_property_create_enum(dev
, 0,
1363 "DPMS", drm_dpms_enum_list
,
1364 ARRAY_SIZE(drm_dpms_enum_list
));
1367 dev
->mode_config
.dpms_property
= prop
;
1369 prop
= drm_property_create(dev
,
1370 DRM_MODE_PROP_BLOB
|
1371 DRM_MODE_PROP_IMMUTABLE
,
1375 dev
->mode_config
.path_property
= prop
;
1377 prop
= drm_property_create(dev
,
1378 DRM_MODE_PROP_BLOB
|
1379 DRM_MODE_PROP_IMMUTABLE
,
1383 dev
->mode_config
.tile_property
= prop
;
1385 prop
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1386 "type", drm_plane_type_enum_list
,
1387 ARRAY_SIZE(drm_plane_type_enum_list
));
1390 dev
->mode_config
.plane_type_property
= prop
;
1392 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1393 "SRC_X", 0, UINT_MAX
);
1396 dev
->mode_config
.prop_src_x
= prop
;
1398 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1399 "SRC_Y", 0, UINT_MAX
);
1402 dev
->mode_config
.prop_src_y
= prop
;
1404 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1405 "SRC_W", 0, UINT_MAX
);
1408 dev
->mode_config
.prop_src_w
= prop
;
1410 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1411 "SRC_H", 0, UINT_MAX
);
1414 dev
->mode_config
.prop_src_h
= prop
;
1416 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1417 "CRTC_X", INT_MIN
, INT_MAX
);
1420 dev
->mode_config
.prop_crtc_x
= prop
;
1422 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1423 "CRTC_Y", INT_MIN
, INT_MAX
);
1426 dev
->mode_config
.prop_crtc_y
= prop
;
1428 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1429 "CRTC_W", 0, INT_MAX
);
1432 dev
->mode_config
.prop_crtc_w
= prop
;
1434 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1435 "CRTC_H", 0, INT_MAX
);
1438 dev
->mode_config
.prop_crtc_h
= prop
;
1440 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1441 "FB_ID", DRM_MODE_OBJECT_FB
);
1444 dev
->mode_config
.prop_fb_id
= prop
;
1446 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1447 "CRTC_ID", DRM_MODE_OBJECT_CRTC
);
1450 dev
->mode_config
.prop_crtc_id
= prop
;
1452 prop
= drm_property_create_bool(dev
, DRM_MODE_PROP_ATOMIC
,
1456 dev
->mode_config
.prop_active
= prop
;
1458 prop
= drm_property_create(dev
,
1459 DRM_MODE_PROP_ATOMIC
| DRM_MODE_PROP_BLOB
,
1463 dev
->mode_config
.prop_mode_id
= prop
;
1469 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1472 * Called by a driver the first time a DVI-I connector is made.
1474 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1476 struct drm_property
*dvi_i_selector
;
1477 struct drm_property
*dvi_i_subconnector
;
1479 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1483 drm_property_create_enum(dev
, 0,
1484 "select subconnector",
1485 drm_dvi_i_select_enum_list
,
1486 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1487 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1489 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1491 drm_dvi_i_subconnector_enum_list
,
1492 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1493 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1497 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1500 * drm_create_tv_properties - create TV specific connector properties
1502 * @num_modes: number of different TV formats (modes) supported
1503 * @modes: array of pointers to strings containing name of each format
1505 * Called by a driver's TV initialization routine, this function creates
1506 * the TV specific connector properties for a given device. Caller is
1507 * responsible for allocating a list of format names and passing them to
1510 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1511 unsigned int num_modes
,
1514 struct drm_property
*tv_selector
;
1515 struct drm_property
*tv_subconnector
;
1518 if (dev
->mode_config
.tv_select_subconnector_property
)
1522 * Basic connector properties
1524 tv_selector
= drm_property_create_enum(dev
, 0,
1525 "select subconnector",
1526 drm_tv_select_enum_list
,
1527 ARRAY_SIZE(drm_tv_select_enum_list
));
1528 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1531 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1533 drm_tv_subconnector_enum_list
,
1534 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1535 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1538 * Other, TV specific properties: margins & TV modes.
1540 dev
->mode_config
.tv_left_margin_property
=
1541 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1543 dev
->mode_config
.tv_right_margin_property
=
1544 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1546 dev
->mode_config
.tv_top_margin_property
=
1547 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1549 dev
->mode_config
.tv_bottom_margin_property
=
1550 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1552 dev
->mode_config
.tv_mode_property
=
1553 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1555 for (i
= 0; i
< num_modes
; i
++)
1556 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1559 dev
->mode_config
.tv_brightness_property
=
1560 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1562 dev
->mode_config
.tv_contrast_property
=
1563 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1565 dev
->mode_config
.tv_flicker_reduction_property
=
1566 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1568 dev
->mode_config
.tv_overscan_property
=
1569 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1571 dev
->mode_config
.tv_saturation_property
=
1572 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1574 dev
->mode_config
.tv_hue_property
=
1575 drm_property_create_range(dev
, 0, "hue", 0, 100);
1579 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1582 * drm_mode_create_scaling_mode_property - create scaling mode property
1585 * Called by a driver the first time it's needed, must be attached to desired
1588 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1590 struct drm_property
*scaling_mode
;
1592 if (dev
->mode_config
.scaling_mode_property
)
1596 drm_property_create_enum(dev
, 0, "scaling mode",
1597 drm_scaling_mode_enum_list
,
1598 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1600 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1604 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1607 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1610 * Called by a driver the first time it's needed, must be attached to desired
1614 * Zero on success, negative errno on failure.
1616 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1618 if (dev
->mode_config
.aspect_ratio_property
)
1621 dev
->mode_config
.aspect_ratio_property
=
1622 drm_property_create_enum(dev
, 0, "aspect ratio",
1623 drm_aspect_ratio_enum_list
,
1624 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1626 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1631 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1634 * drm_mode_create_dirty_property - create dirty property
1637 * Called by a driver the first time it's needed, must be attached to desired
1640 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1642 struct drm_property
*dirty_info
;
1644 if (dev
->mode_config
.dirty_info_property
)
1648 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1650 drm_dirty_info_enum_list
,
1651 ARRAY_SIZE(drm_dirty_info_enum_list
));
1652 dev
->mode_config
.dirty_info_property
= dirty_info
;
1656 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1659 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1662 * Create the the suggested x/y offset property for connectors.
1664 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1666 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1669 dev
->mode_config
.suggested_x_property
=
1670 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1672 dev
->mode_config
.suggested_y_property
=
1673 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1675 if (dev
->mode_config
.suggested_x_property
== NULL
||
1676 dev
->mode_config
.suggested_y_property
== NULL
)
1680 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1682 static int drm_mode_group_init(struct drm_device
*dev
, struct drm_mode_group
*group
)
1684 uint32_t total_objects
= 0;
1686 total_objects
+= dev
->mode_config
.num_crtc
;
1687 total_objects
+= dev
->mode_config
.num_connector
;
1688 total_objects
+= dev
->mode_config
.num_encoder
;
1690 group
->id_list
= kcalloc(total_objects
, sizeof(uint32_t), GFP_KERNEL
);
1691 if (!group
->id_list
)
1694 group
->num_crtcs
= 0;
1695 group
->num_connectors
= 0;
1696 group
->num_encoders
= 0;
1700 void drm_mode_group_destroy(struct drm_mode_group
*group
)
1702 kfree(group
->id_list
);
1703 group
->id_list
= NULL
;
1707 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1708 * the drm core's responsibility to set up mode control groups.
1710 int drm_mode_group_init_legacy_group(struct drm_device
*dev
,
1711 struct drm_mode_group
*group
)
1713 struct drm_crtc
*crtc
;
1714 struct drm_encoder
*encoder
;
1715 struct drm_connector
*connector
;
1718 ret
= drm_mode_group_init(dev
, group
);
1722 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
1723 group
->id_list
[group
->num_crtcs
++] = crtc
->base
.id
;
1725 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
1726 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
++] =
1729 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1730 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1731 group
->num_connectors
++] = connector
->base
.id
;
1735 EXPORT_SYMBOL(drm_mode_group_init_legacy_group
);
1737 void drm_reinit_primary_mode_group(struct drm_device
*dev
)
1739 drm_modeset_lock_all(dev
);
1740 drm_mode_group_destroy(&dev
->primary
->mode_group
);
1741 drm_mode_group_init_legacy_group(dev
, &dev
->primary
->mode_group
);
1742 drm_modeset_unlock_all(dev
);
1744 EXPORT_SYMBOL(drm_reinit_primary_mode_group
);
1747 * drm_mode_getresources - get graphics configuration
1748 * @dev: drm device for the ioctl
1749 * @data: data pointer for the ioctl
1750 * @file_priv: drm file for the ioctl call
1752 * Construct a set of configuration description structures and return
1753 * them to the user, including CRTC, connector and framebuffer configuration.
1755 * Called by the user via ioctl.
1758 * Zero on success, negative errno on failure.
1760 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1761 struct drm_file
*file_priv
)
1763 struct drm_mode_card_res
*card_res
= data
;
1764 struct list_head
*lh
;
1765 struct drm_framebuffer
*fb
;
1766 struct drm_connector
*connector
;
1767 struct drm_crtc
*crtc
;
1768 struct drm_encoder
*encoder
;
1770 int connector_count
= 0;
1773 int encoder_count
= 0;
1775 uint32_t __user
*fb_id
;
1776 uint32_t __user
*crtc_id
;
1777 uint32_t __user
*connector_id
;
1778 uint32_t __user
*encoder_id
;
1779 struct drm_mode_group
*mode_group
;
1781 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1785 mutex_lock(&file_priv
->fbs_lock
);
1787 * For the non-control nodes we need to limit the list of resources
1788 * by IDs in the group list for this node
1790 list_for_each(lh
, &file_priv
->fbs
)
1793 /* handle this in 4 parts */
1795 if (card_res
->count_fbs
>= fb_count
) {
1797 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1798 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1799 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1800 mutex_unlock(&file_priv
->fbs_lock
);
1806 card_res
->count_fbs
= fb_count
;
1807 mutex_unlock(&file_priv
->fbs_lock
);
1809 /* mode_config.mutex protects the connector list against e.g. DP MST
1810 * connector hot-adding. CRTC/Plane lists are invariant. */
1811 mutex_lock(&dev
->mode_config
.mutex
);
1812 if (!drm_is_primary_client(file_priv
)) {
1815 list_for_each(lh
, &dev
->mode_config
.crtc_list
)
1818 list_for_each(lh
, &dev
->mode_config
.connector_list
)
1821 list_for_each(lh
, &dev
->mode_config
.encoder_list
)
1825 mode_group
= &file_priv
->master
->minor
->mode_group
;
1826 crtc_count
= mode_group
->num_crtcs
;
1827 connector_count
= mode_group
->num_connectors
;
1828 encoder_count
= mode_group
->num_encoders
;
1831 card_res
->max_height
= dev
->mode_config
.max_height
;
1832 card_res
->min_height
= dev
->mode_config
.min_height
;
1833 card_res
->max_width
= dev
->mode_config
.max_width
;
1834 card_res
->min_width
= dev
->mode_config
.min_width
;
1837 if (card_res
->count_crtcs
>= crtc_count
) {
1839 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1841 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
,
1843 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1844 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1851 for (i
= 0; i
< mode_group
->num_crtcs
; i
++) {
1852 if (put_user(mode_group
->id_list
[i
],
1853 crtc_id
+ copied
)) {
1861 card_res
->count_crtcs
= crtc_count
;
1864 if (card_res
->count_encoders
>= encoder_count
) {
1866 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1868 list_for_each_entry(encoder
,
1869 &dev
->mode_config
.encoder_list
,
1871 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1873 if (put_user(encoder
->base
.id
, encoder_id
+
1881 for (i
= mode_group
->num_crtcs
; i
< mode_group
->num_crtcs
+ mode_group
->num_encoders
; i
++) {
1882 if (put_user(mode_group
->id_list
[i
],
1883 encoder_id
+ copied
)) {
1892 card_res
->count_encoders
= encoder_count
;
1895 if (card_res
->count_connectors
>= connector_count
) {
1897 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1899 list_for_each_entry(connector
,
1900 &dev
->mode_config
.connector_list
,
1902 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1905 if (put_user(connector
->base
.id
,
1906 connector_id
+ copied
)) {
1913 int start
= mode_group
->num_crtcs
+
1914 mode_group
->num_encoders
;
1915 for (i
= start
; i
< start
+ mode_group
->num_connectors
; i
++) {
1916 if (put_user(mode_group
->id_list
[i
],
1917 connector_id
+ copied
)) {
1925 card_res
->count_connectors
= connector_count
;
1927 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1928 card_res
->count_connectors
, card_res
->count_encoders
);
1931 mutex_unlock(&dev
->mode_config
.mutex
);
1936 * drm_mode_getcrtc - get CRTC configuration
1937 * @dev: drm device for the ioctl
1938 * @data: data pointer for the ioctl
1939 * @file_priv: drm file for the ioctl call
1941 * Construct a CRTC configuration structure to return to the user.
1943 * Called by the user via ioctl.
1946 * Zero on success, negative errno on failure.
1948 int drm_mode_getcrtc(struct drm_device
*dev
,
1949 void *data
, struct drm_file
*file_priv
)
1951 struct drm_mode_crtc
*crtc_resp
= data
;
1952 struct drm_crtc
*crtc
;
1954 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1957 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
1961 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
1962 crtc_resp
->gamma_size
= crtc
->gamma_size
;
1963 if (crtc
->primary
->fb
)
1964 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
1966 crtc_resp
->fb_id
= 0;
1969 crtc_resp
->x
= crtc
->primary
->state
->src_x
>> 16;
1970 crtc_resp
->y
= crtc
->primary
->state
->src_y
>> 16;
1971 if (crtc
->state
->enable
) {
1972 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->state
->mode
);
1973 crtc_resp
->mode_valid
= 1;
1976 crtc_resp
->mode_valid
= 0;
1979 crtc_resp
->x
= crtc
->x
;
1980 crtc_resp
->y
= crtc
->y
;
1981 if (crtc
->enabled
) {
1982 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
1983 crtc_resp
->mode_valid
= 1;
1986 crtc_resp
->mode_valid
= 0;
1989 drm_modeset_unlock_crtc(crtc
);
1994 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1995 const struct drm_file
*file_priv
)
1998 * If user-space hasn't configured the driver to expose the stereo 3D
1999 * modes, don't expose them.
2001 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
2007 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
2009 /* For atomic drivers only state objects are synchronously updated and
2010 * protected by modeset locks, so check those first. */
2011 if (connector
->state
)
2012 return connector
->state
->best_encoder
;
2013 return connector
->encoder
;
2016 /* helper for getconnector and getproperties ioctls */
2017 static int get_properties(struct drm_mode_object
*obj
, bool atomic
,
2018 uint32_t __user
*prop_ptr
, uint64_t __user
*prop_values
,
2019 uint32_t *arg_count_props
)
2024 props_count
= obj
->properties
->count
;
2026 props_count
-= obj
->properties
->atomic_count
;
2028 if ((*arg_count_props
>= props_count
) && props_count
) {
2029 for (i
= 0, copied
= 0; copied
< props_count
; i
++) {
2030 struct drm_property
*prop
= obj
->properties
->properties
[i
];
2033 if ((prop
->flags
& DRM_MODE_PROP_ATOMIC
) && !atomic
)
2036 ret
= drm_object_property_get_value(obj
, prop
, &val
);
2040 if (put_user(prop
->base
.id
, prop_ptr
+ copied
))
2043 if (put_user(val
, prop_values
+ copied
))
2049 *arg_count_props
= props_count
;
2055 * drm_mode_getconnector - get connector configuration
2056 * @dev: drm device for the ioctl
2057 * @data: data pointer for the ioctl
2058 * @file_priv: drm file for the ioctl call
2060 * Construct a connector configuration structure to return to the user.
2062 * Called by the user via ioctl.
2065 * Zero on success, negative errno on failure.
2067 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
2068 struct drm_file
*file_priv
)
2070 struct drm_mode_get_connector
*out_resp
= data
;
2071 struct drm_connector
*connector
;
2072 struct drm_encoder
*encoder
;
2073 struct drm_display_mode
*mode
;
2075 int encoders_count
= 0;
2079 struct drm_mode_modeinfo u_mode
;
2080 struct drm_mode_modeinfo __user
*mode_ptr
;
2081 uint32_t __user
*encoder_ptr
;
2083 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2086 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
2088 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
2090 mutex_lock(&dev
->mode_config
.mutex
);
2092 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
2098 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++)
2099 if (connector
->encoder_ids
[i
] != 0)
2102 if (out_resp
->count_modes
== 0) {
2103 connector
->funcs
->fill_modes(connector
,
2104 dev
->mode_config
.max_width
,
2105 dev
->mode_config
.max_height
);
2108 /* delayed so we get modes regardless of pre-fill_modes state */
2109 list_for_each_entry(mode
, &connector
->modes
, head
)
2110 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2113 out_resp
->connector_id
= connector
->base
.id
;
2114 out_resp
->connector_type
= connector
->connector_type
;
2115 out_resp
->connector_type_id
= connector
->connector_type_id
;
2116 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2117 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2118 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2119 out_resp
->connection
= connector
->status
;
2121 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2122 encoder
= drm_connector_get_encoder(connector
);
2124 out_resp
->encoder_id
= encoder
->base
.id
;
2126 out_resp
->encoder_id
= 0;
2129 * This ioctl is called twice, once to determine how much space is
2130 * needed, and the 2nd time to fill it.
2132 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2134 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2135 list_for_each_entry(mode
, &connector
->modes
, head
) {
2136 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2139 drm_mode_convert_to_umode(&u_mode
, mode
);
2140 if (copy_to_user(mode_ptr
+ copied
,
2141 &u_mode
, sizeof(u_mode
))) {
2148 out_resp
->count_modes
= mode_count
;
2150 ret
= get_properties(&connector
->base
, file_priv
->atomic
,
2151 (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
),
2152 (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
),
2153 &out_resp
->count_props
);
2157 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2159 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2160 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2161 if (connector
->encoder_ids
[i
] != 0) {
2162 if (put_user(connector
->encoder_ids
[i
],
2163 encoder_ptr
+ copied
)) {
2171 out_resp
->count_encoders
= encoders_count
;
2174 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2177 mutex_unlock(&dev
->mode_config
.mutex
);
2182 static struct drm_crtc
*drm_encoder_get_crtc(struct drm_encoder
*encoder
)
2184 struct drm_connector
*connector
;
2185 struct drm_device
*dev
= encoder
->dev
;
2186 bool uses_atomic
= false;
2188 /* For atomic drivers only state objects are synchronously updated and
2189 * protected by modeset locks, so check those first. */
2190 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
2191 if (!connector
->state
)
2196 if (connector
->state
->best_encoder
!= encoder
)
2199 return connector
->state
->crtc
;
2202 /* Don't return stale data (e.g. pending async disable). */
2206 return encoder
->crtc
;
2210 * drm_mode_getencoder - get encoder configuration
2211 * @dev: drm device for the ioctl
2212 * @data: data pointer for the ioctl
2213 * @file_priv: drm file for the ioctl call
2215 * Construct a encoder configuration structure to return to the user.
2217 * Called by the user via ioctl.
2220 * Zero on success, negative errno on failure.
2222 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2223 struct drm_file
*file_priv
)
2225 struct drm_mode_get_encoder
*enc_resp
= data
;
2226 struct drm_encoder
*encoder
;
2227 struct drm_crtc
*crtc
;
2229 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2232 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2236 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2237 crtc
= drm_encoder_get_crtc(encoder
);
2239 enc_resp
->crtc_id
= crtc
->base
.id
;
2241 enc_resp
->crtc_id
= 0;
2242 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2244 enc_resp
->encoder_type
= encoder
->encoder_type
;
2245 enc_resp
->encoder_id
= encoder
->base
.id
;
2246 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2247 enc_resp
->possible_clones
= encoder
->possible_clones
;
2253 * drm_mode_getplane_res - enumerate all plane resources
2256 * @file_priv: DRM file info
2258 * Construct a list of plane ids to return to the user.
2260 * Called by the user via ioctl.
2263 * Zero on success, negative errno on failure.
2265 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2266 struct drm_file
*file_priv
)
2268 struct drm_mode_get_plane_res
*plane_resp
= data
;
2269 struct drm_mode_config
*config
;
2270 struct drm_plane
*plane
;
2271 uint32_t __user
*plane_ptr
;
2273 unsigned num_planes
;
2275 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2278 config
= &dev
->mode_config
;
2280 if (file_priv
->universal_planes
)
2281 num_planes
= config
->num_total_plane
;
2283 num_planes
= config
->num_overlay_plane
;
2286 * This ioctl is called twice, once to determine how much space is
2287 * needed, and the 2nd time to fill it.
2290 (plane_resp
->count_planes
>= num_planes
)) {
2291 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2293 /* Plane lists are invariant, no locking needed. */
2294 list_for_each_entry(plane
, &config
->plane_list
, head
) {
2296 * Unless userspace set the 'universal planes'
2297 * capability bit, only advertise overlays.
2299 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2300 !file_priv
->universal_planes
)
2303 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2308 plane_resp
->count_planes
= num_planes
;
2314 * drm_mode_getplane - get plane configuration
2317 * @file_priv: DRM file info
2319 * Construct a plane configuration structure to return to the user.
2321 * Called by the user via ioctl.
2324 * Zero on success, negative errno on failure.
2326 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2327 struct drm_file
*file_priv
)
2329 struct drm_mode_get_plane
*plane_resp
= data
;
2330 struct drm_plane
*plane
;
2331 uint32_t __user
*format_ptr
;
2333 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2336 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2340 drm_modeset_lock(&plane
->mutex
, NULL
);
2342 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2344 plane_resp
->crtc_id
= 0;
2347 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2349 plane_resp
->fb_id
= 0;
2350 drm_modeset_unlock(&plane
->mutex
);
2352 plane_resp
->plane_id
= plane
->base
.id
;
2353 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2354 plane_resp
->gamma_size
= 0;
2357 * This ioctl is called twice, once to determine how much space is
2358 * needed, and the 2nd time to fill it.
2360 if (plane
->format_count
&&
2361 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2362 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2363 if (copy_to_user(format_ptr
,
2364 plane
->format_types
,
2365 sizeof(uint32_t) * plane
->format_count
)) {
2369 plane_resp
->count_format_types
= plane
->format_count
;
2375 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2376 * @plane: plane to check for format support
2377 * @format: the pixel format
2380 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2383 int drm_plane_check_pixel_format(const struct drm_plane
*plane
, u32 format
)
2387 for (i
= 0; i
< plane
->format_count
; i
++) {
2388 if (format
== plane
->format_types
[i
])
2396 * setplane_internal - setplane handler for internal callers
2398 * Note that we assume an extra reference has already been taken on fb. If the
2399 * update fails, this reference will be dropped before return; if it succeeds,
2400 * the previous framebuffer (if any) will be unreferenced instead.
2402 * src_{x,y,w,h} are provided in 16.16 fixed point format
2404 static int __setplane_internal(struct drm_plane
*plane
,
2405 struct drm_crtc
*crtc
,
2406 struct drm_framebuffer
*fb
,
2407 int32_t crtc_x
, int32_t crtc_y
,
2408 uint32_t crtc_w
, uint32_t crtc_h
,
2409 /* src_{x,y,w,h} values are 16.16 fixed point */
2410 uint32_t src_x
, uint32_t src_y
,
2411 uint32_t src_w
, uint32_t src_h
)
2414 unsigned int fb_width
, fb_height
;
2416 /* No fb means shut it down */
2418 plane
->old_fb
= plane
->fb
;
2419 ret
= plane
->funcs
->disable_plane(plane
);
2424 plane
->old_fb
= NULL
;
2429 /* Check whether this plane is usable on this CRTC */
2430 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2431 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2436 /* Check whether this plane supports the fb pixel format. */
2437 ret
= drm_plane_check_pixel_format(plane
, fb
->pixel_format
);
2439 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2440 drm_get_format_name(fb
->pixel_format
));
2444 /* Give drivers some help against integer overflows */
2445 if (crtc_w
> INT_MAX
||
2446 crtc_x
> INT_MAX
- (int32_t) crtc_w
||
2448 crtc_y
> INT_MAX
- (int32_t) crtc_h
) {
2449 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2450 crtc_w
, crtc_h
, crtc_x
, crtc_y
);
2455 fb_width
= fb
->width
<< 16;
2456 fb_height
= fb
->height
<< 16;
2458 /* Make sure source coordinates are inside the fb. */
2459 if (src_w
> fb_width
||
2460 src_x
> fb_width
- src_w
||
2461 src_h
> fb_height
||
2462 src_y
> fb_height
- src_h
) {
2463 DRM_DEBUG_KMS("Invalid source coordinates "
2464 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2465 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2466 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2467 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2468 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2473 plane
->old_fb
= plane
->fb
;
2474 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2475 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2476 src_x
, src_y
, src_w
, src_h
);
2482 plane
->old_fb
= NULL
;
2487 drm_framebuffer_unreference(fb
);
2489 drm_framebuffer_unreference(plane
->old_fb
);
2490 plane
->old_fb
= NULL
;
2495 static int setplane_internal(struct drm_plane
*plane
,
2496 struct drm_crtc
*crtc
,
2497 struct drm_framebuffer
*fb
,
2498 int32_t crtc_x
, int32_t crtc_y
,
2499 uint32_t crtc_w
, uint32_t crtc_h
,
2500 /* src_{x,y,w,h} values are 16.16 fixed point */
2501 uint32_t src_x
, uint32_t src_y
,
2502 uint32_t src_w
, uint32_t src_h
)
2506 drm_modeset_lock_all(plane
->dev
);
2507 ret
= __setplane_internal(plane
, crtc
, fb
,
2508 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2509 src_x
, src_y
, src_w
, src_h
);
2510 drm_modeset_unlock_all(plane
->dev
);
2516 * drm_mode_setplane - configure a plane's configuration
2518 * @data: ioctl data*
2519 * @file_priv: DRM file info
2521 * Set plane configuration, including placement, fb, scaling, and other factors.
2522 * Or pass a NULL fb to disable (planes may be disabled without providing a
2526 * Zero on success, negative errno on failure.
2528 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2529 struct drm_file
*file_priv
)
2531 struct drm_mode_set_plane
*plane_req
= data
;
2532 struct drm_plane
*plane
;
2533 struct drm_crtc
*crtc
= NULL
;
2534 struct drm_framebuffer
*fb
= NULL
;
2536 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2540 * First, find the plane, crtc, and fb objects. If not available,
2541 * we don't bother to call the driver.
2543 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
2545 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2546 plane_req
->plane_id
);
2550 if (plane_req
->fb_id
) {
2551 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2553 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2558 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
2560 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2561 plane_req
->crtc_id
);
2567 * setplane_internal will take care of deref'ing either the old or new
2568 * framebuffer depending on success.
2570 return setplane_internal(plane
, crtc
, fb
,
2571 plane_req
->crtc_x
, plane_req
->crtc_y
,
2572 plane_req
->crtc_w
, plane_req
->crtc_h
,
2573 plane_req
->src_x
, plane_req
->src_y
,
2574 plane_req
->src_w
, plane_req
->src_h
);
2578 * drm_mode_set_config_internal - helper to call ->set_config
2579 * @set: modeset config to set
2581 * This is a little helper to wrap internal calls to the ->set_config driver
2582 * interface. The only thing it adds is correct refcounting dance.
2585 * Zero on success, negative errno on failure.
2587 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2589 struct drm_crtc
*crtc
= set
->crtc
;
2590 struct drm_framebuffer
*fb
;
2591 struct drm_crtc
*tmp
;
2595 * NOTE: ->set_config can also disable other crtcs (if we steal all
2596 * connectors from it), hence we need to refcount the fbs across all
2597 * crtcs. Atomic modeset will have saner semantics ...
2599 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
)
2600 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2604 ret
= crtc
->funcs
->set_config(set
);
2606 crtc
->primary
->crtc
= crtc
;
2607 crtc
->primary
->fb
= fb
;
2610 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
2611 if (tmp
->primary
->fb
)
2612 drm_framebuffer_reference(tmp
->primary
->fb
);
2613 if (tmp
->primary
->old_fb
)
2614 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2615 tmp
->primary
->old_fb
= NULL
;
2620 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2623 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2624 * @mode: mode to query
2625 * @hdisplay: hdisplay value to fill in
2626 * @vdisplay: vdisplay value to fill in
2628 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2629 * the appropriate layout.
2631 void drm_crtc_get_hv_timing(const struct drm_display_mode
*mode
,
2632 int *hdisplay
, int *vdisplay
)
2634 struct drm_display_mode adjusted
;
2636 drm_mode_copy(&adjusted
, mode
);
2637 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE_ONLY
);
2638 *hdisplay
= adjusted
.crtc_hdisplay
;
2639 *vdisplay
= adjusted
.crtc_vdisplay
;
2641 EXPORT_SYMBOL(drm_crtc_get_hv_timing
);
2644 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2646 * @crtc: CRTC that framebuffer will be displayed on
2649 * @mode: mode that framebuffer will be displayed under
2650 * @fb: framebuffer to check size of
2652 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2654 const struct drm_display_mode
*mode
,
2655 const struct drm_framebuffer
*fb
)
2658 int hdisplay
, vdisplay
;
2660 drm_crtc_get_hv_timing(mode
, &hdisplay
, &vdisplay
);
2662 if (crtc
->invert_dimensions
)
2663 swap(hdisplay
, vdisplay
);
2665 if (hdisplay
> fb
->width
||
2666 vdisplay
> fb
->height
||
2667 x
> fb
->width
- hdisplay
||
2668 y
> fb
->height
- vdisplay
) {
2669 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2670 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2671 crtc
->invert_dimensions
? " (inverted)" : "");
2677 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2680 * drm_mode_setcrtc - set CRTC configuration
2681 * @dev: drm device for the ioctl
2682 * @data: data pointer for the ioctl
2683 * @file_priv: drm file for the ioctl call
2685 * Build a new CRTC configuration based on user request.
2687 * Called by the user via ioctl.
2690 * Zero on success, negative errno on failure.
2692 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2693 struct drm_file
*file_priv
)
2695 struct drm_mode_config
*config
= &dev
->mode_config
;
2696 struct drm_mode_crtc
*crtc_req
= data
;
2697 struct drm_crtc
*crtc
;
2698 struct drm_connector
**connector_set
= NULL
, *connector
;
2699 struct drm_framebuffer
*fb
= NULL
;
2700 struct drm_display_mode
*mode
= NULL
;
2701 struct drm_mode_set set
;
2702 uint32_t __user
*set_connectors_ptr
;
2706 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2709 /* For some reason crtc x/y offsets are signed internally. */
2710 if (crtc_req
->x
> INT_MAX
|| crtc_req
->y
> INT_MAX
)
2713 drm_modeset_lock_all(dev
);
2714 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2716 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2720 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2722 if (crtc_req
->mode_valid
) {
2723 /* If we have a mode we need a framebuffer. */
2724 /* If we pass -1, set the mode with the currently bound fb */
2725 if (crtc_req
->fb_id
== -1) {
2726 if (!crtc
->primary
->fb
) {
2727 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2731 fb
= crtc
->primary
->fb
;
2732 /* Make refcounting symmetric with the lookup path. */
2733 drm_framebuffer_reference(fb
);
2735 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2737 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2744 mode
= drm_mode_create(dev
);
2750 ret
= drm_mode_convert_umode(mode
, &crtc_req
->mode
);
2752 DRM_DEBUG_KMS("Invalid mode\n");
2756 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2759 * Check whether the primary plane supports the fb pixel format.
2760 * Drivers not implementing the universal planes API use a
2761 * default formats list provided by the DRM core which doesn't
2762 * match real hardware capabilities. Skip the check in that
2765 if (!crtc
->primary
->format_default
) {
2766 ret
= drm_plane_check_pixel_format(crtc
->primary
,
2769 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2770 drm_get_format_name(fb
->pixel_format
));
2775 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2782 if (crtc_req
->count_connectors
== 0 && mode
) {
2783 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2788 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2789 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2790 crtc_req
->count_connectors
);
2795 if (crtc_req
->count_connectors
> 0) {
2798 /* Avoid unbounded kernel memory allocation */
2799 if (crtc_req
->count_connectors
> config
->num_connector
) {
2804 connector_set
= kmalloc_array(crtc_req
->count_connectors
,
2805 sizeof(struct drm_connector
*),
2807 if (!connector_set
) {
2812 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2813 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2814 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2819 connector
= drm_connector_find(dev
, out_id
);
2821 DRM_DEBUG_KMS("Connector id %d unknown\n",
2826 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2830 connector_set
[i
] = connector
;
2835 set
.x
= crtc_req
->x
;
2836 set
.y
= crtc_req
->y
;
2838 set
.connectors
= connector_set
;
2839 set
.num_connectors
= crtc_req
->count_connectors
;
2841 ret
= drm_mode_set_config_internal(&set
);
2845 drm_framebuffer_unreference(fb
);
2847 kfree(connector_set
);
2848 drm_mode_destroy(dev
, mode
);
2849 drm_modeset_unlock_all(dev
);
2854 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2855 * universal plane handler call
2856 * @crtc: crtc to update cursor for
2857 * @req: data pointer for the ioctl
2858 * @file_priv: drm file for the ioctl call
2860 * Legacy cursor ioctl's work directly with driver buffer handles. To
2861 * translate legacy ioctl calls into universal plane handler calls, we need to
2862 * wrap the native buffer handle in a drm_framebuffer.
2864 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2865 * buffer with a pitch of 4*width; the universal plane interface should be used
2866 * directly in cases where the hardware can support other buffer settings and
2867 * userspace wants to make use of these capabilities.
2870 * Zero on success, negative errno on failure.
2872 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2873 struct drm_mode_cursor2
*req
,
2874 struct drm_file
*file_priv
)
2876 struct drm_device
*dev
= crtc
->dev
;
2877 struct drm_framebuffer
*fb
= NULL
;
2878 struct drm_mode_fb_cmd2 fbreq
= {
2879 .width
= req
->width
,
2880 .height
= req
->height
,
2881 .pixel_format
= DRM_FORMAT_ARGB8888
,
2882 .pitches
= { req
->width
* 4 },
2883 .handles
= { req
->handle
},
2885 int32_t crtc_x
, crtc_y
;
2886 uint32_t crtc_w
= 0, crtc_h
= 0;
2887 uint32_t src_w
= 0, src_h
= 0;
2890 BUG_ON(!crtc
->cursor
);
2891 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2894 * Obtain fb we'll be using (either new or existing) and take an extra
2895 * reference to it if fb != null. setplane will take care of dropping
2896 * the reference if the plane update fails.
2898 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2900 fb
= internal_framebuffer_create(dev
, &fbreq
, file_priv
);
2902 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2909 fb
= crtc
->cursor
->fb
;
2911 drm_framebuffer_reference(fb
);
2914 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2918 crtc_x
= crtc
->cursor_x
;
2919 crtc_y
= crtc
->cursor_y
;
2924 crtc_h
= fb
->height
;
2925 src_w
= fb
->width
<< 16;
2926 src_h
= fb
->height
<< 16;
2930 * setplane_internal will take care of deref'ing either the old or new
2931 * framebuffer depending on success.
2933 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2934 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2935 0, 0, src_w
, src_h
);
2937 /* Update successful; save new cursor position, if necessary */
2938 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2939 crtc
->cursor_x
= req
->x
;
2940 crtc
->cursor_y
= req
->y
;
2946 static int drm_mode_cursor_common(struct drm_device
*dev
,
2947 struct drm_mode_cursor2
*req
,
2948 struct drm_file
*file_priv
)
2950 struct drm_crtc
*crtc
;
2953 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2956 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2959 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2961 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2966 * If this crtc has a universal cursor plane, call that plane's update
2967 * handler rather than using legacy cursor handlers.
2969 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
2971 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2975 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2976 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2980 /* Turns off the cursor if handle is 0 */
2981 if (crtc
->funcs
->cursor_set2
)
2982 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2983 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2985 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2986 req
->width
, req
->height
);
2989 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2990 if (crtc
->funcs
->cursor_move
) {
2991 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
2998 drm_modeset_unlock_crtc(crtc
);
3006 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3007 * @dev: drm device for the ioctl
3008 * @data: data pointer for the ioctl
3009 * @file_priv: drm file for the ioctl call
3011 * Set the cursor configuration based on user request.
3013 * Called by the user via ioctl.
3016 * Zero on success, negative errno on failure.
3018 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
3019 void *data
, struct drm_file
*file_priv
)
3021 struct drm_mode_cursor
*req
= data
;
3022 struct drm_mode_cursor2 new_req
;
3024 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
3025 new_req
.hot_x
= new_req
.hot_y
= 0;
3027 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
3031 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3032 * @dev: drm device for the ioctl
3033 * @data: data pointer for the ioctl
3034 * @file_priv: drm file for the ioctl call
3036 * Set the cursor configuration based on user request. This implements the 2nd
3037 * version of the cursor ioctl, which allows userspace to additionally specify
3038 * the hotspot of the pointer.
3040 * Called by the user via ioctl.
3043 * Zero on success, negative errno on failure.
3045 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
3046 void *data
, struct drm_file
*file_priv
)
3048 struct drm_mode_cursor2
*req
= data
;
3050 return drm_mode_cursor_common(dev
, req
, file_priv
);
3054 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3055 * @bpp: bits per pixels
3056 * @depth: bit depth per pixel
3058 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3059 * Useful in fbdev emulation code, since that deals in those values.
3061 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
3067 fmt
= DRM_FORMAT_C8
;
3071 fmt
= DRM_FORMAT_XRGB1555
;
3073 fmt
= DRM_FORMAT_RGB565
;
3076 fmt
= DRM_FORMAT_RGB888
;
3080 fmt
= DRM_FORMAT_XRGB8888
;
3081 else if (depth
== 30)
3082 fmt
= DRM_FORMAT_XRGB2101010
;
3084 fmt
= DRM_FORMAT_ARGB8888
;
3087 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3088 fmt
= DRM_FORMAT_XRGB8888
;
3094 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
3097 * drm_mode_addfb - add an FB to the graphics configuration
3098 * @dev: drm device for the ioctl
3099 * @data: data pointer for the ioctl
3100 * @file_priv: drm file for the ioctl call
3102 * Add a new FB to the specified CRTC, given a user request. This is the
3103 * original addfb ioctl which only supported RGB formats.
3105 * Called by the user via ioctl.
3108 * Zero on success, negative errno on failure.
3110 int drm_mode_addfb(struct drm_device
*dev
,
3111 void *data
, struct drm_file
*file_priv
)
3113 struct drm_mode_fb_cmd
*or = data
;
3114 struct drm_mode_fb_cmd2 r
= {};
3117 /* convert to new format and call new ioctl */
3118 r
.fb_id
= or->fb_id
;
3119 r
.width
= or->width
;
3120 r
.height
= or->height
;
3121 r
.pitches
[0] = or->pitch
;
3122 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
3123 r
.handles
[0] = or->handle
;
3125 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
3129 or->fb_id
= r
.fb_id
;
3134 static int format_check(const struct drm_mode_fb_cmd2
*r
)
3136 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3140 case DRM_FORMAT_RGB332
:
3141 case DRM_FORMAT_BGR233
:
3142 case DRM_FORMAT_XRGB4444
:
3143 case DRM_FORMAT_XBGR4444
:
3144 case DRM_FORMAT_RGBX4444
:
3145 case DRM_FORMAT_BGRX4444
:
3146 case DRM_FORMAT_ARGB4444
:
3147 case DRM_FORMAT_ABGR4444
:
3148 case DRM_FORMAT_RGBA4444
:
3149 case DRM_FORMAT_BGRA4444
:
3150 case DRM_FORMAT_XRGB1555
:
3151 case DRM_FORMAT_XBGR1555
:
3152 case DRM_FORMAT_RGBX5551
:
3153 case DRM_FORMAT_BGRX5551
:
3154 case DRM_FORMAT_ARGB1555
:
3155 case DRM_FORMAT_ABGR1555
:
3156 case DRM_FORMAT_RGBA5551
:
3157 case DRM_FORMAT_BGRA5551
:
3158 case DRM_FORMAT_RGB565
:
3159 case DRM_FORMAT_BGR565
:
3160 case DRM_FORMAT_RGB888
:
3161 case DRM_FORMAT_BGR888
:
3162 case DRM_FORMAT_XRGB8888
:
3163 case DRM_FORMAT_XBGR8888
:
3164 case DRM_FORMAT_RGBX8888
:
3165 case DRM_FORMAT_BGRX8888
:
3166 case DRM_FORMAT_ARGB8888
:
3167 case DRM_FORMAT_ABGR8888
:
3168 case DRM_FORMAT_RGBA8888
:
3169 case DRM_FORMAT_BGRA8888
:
3170 case DRM_FORMAT_XRGB2101010
:
3171 case DRM_FORMAT_XBGR2101010
:
3172 case DRM_FORMAT_RGBX1010102
:
3173 case DRM_FORMAT_BGRX1010102
:
3174 case DRM_FORMAT_ARGB2101010
:
3175 case DRM_FORMAT_ABGR2101010
:
3176 case DRM_FORMAT_RGBA1010102
:
3177 case DRM_FORMAT_BGRA1010102
:
3178 case DRM_FORMAT_YUYV
:
3179 case DRM_FORMAT_YVYU
:
3180 case DRM_FORMAT_UYVY
:
3181 case DRM_FORMAT_VYUY
:
3182 case DRM_FORMAT_AYUV
:
3183 case DRM_FORMAT_NV12
:
3184 case DRM_FORMAT_NV21
:
3185 case DRM_FORMAT_NV16
:
3186 case DRM_FORMAT_NV61
:
3187 case DRM_FORMAT_NV24
:
3188 case DRM_FORMAT_NV42
:
3189 case DRM_FORMAT_YUV410
:
3190 case DRM_FORMAT_YVU410
:
3191 case DRM_FORMAT_YUV411
:
3192 case DRM_FORMAT_YVU411
:
3193 case DRM_FORMAT_YUV420
:
3194 case DRM_FORMAT_YVU420
:
3195 case DRM_FORMAT_YUV422
:
3196 case DRM_FORMAT_YVU422
:
3197 case DRM_FORMAT_YUV444
:
3198 case DRM_FORMAT_YVU444
:
3201 DRM_DEBUG_KMS("invalid pixel format %s\n",
3202 drm_get_format_name(r
->pixel_format
));
3207 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3209 int ret
, hsub
, vsub
, num_planes
, i
;
3211 ret
= format_check(r
);
3213 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3214 drm_get_format_name(r
->pixel_format
));
3218 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3219 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3220 num_planes
= drm_format_num_planes(r
->pixel_format
);
3222 if (r
->width
== 0 || r
->width
% hsub
) {
3223 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3227 if (r
->height
== 0 || r
->height
% vsub
) {
3228 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3232 for (i
= 0; i
< num_planes
; i
++) {
3233 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3234 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3235 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3237 if (!r
->handles
[i
]) {
3238 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3242 if ((uint64_t) width
* cpp
> UINT_MAX
)
3245 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3248 if (r
->pitches
[i
] < width
* cpp
) {
3249 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3253 if (r
->modifier
[i
] && !(r
->flags
& DRM_MODE_FB_MODIFIERS
)) {
3254 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3260 for (i
= num_planes
; i
< 4; i
++) {
3261 if (r
->modifier
[i
]) {
3262 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i
);
3266 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3267 if (!(r
->flags
& DRM_MODE_FB_MODIFIERS
))
3270 if (r
->handles
[i
]) {
3271 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i
);
3275 if (r
->pitches
[i
]) {
3276 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i
);
3280 if (r
->offsets
[i
]) {
3281 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i
);
3289 static struct drm_framebuffer
*
3290 internal_framebuffer_create(struct drm_device
*dev
,
3291 struct drm_mode_fb_cmd2
*r
,
3292 struct drm_file
*file_priv
)
3294 struct drm_mode_config
*config
= &dev
->mode_config
;
3295 struct drm_framebuffer
*fb
;
3298 if (r
->flags
& ~(DRM_MODE_FB_INTERLACED
| DRM_MODE_FB_MODIFIERS
)) {
3299 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3300 return ERR_PTR(-EINVAL
);
3303 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3304 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3305 r
->width
, config
->min_width
, config
->max_width
);
3306 return ERR_PTR(-EINVAL
);
3308 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3309 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3310 r
->height
, config
->min_height
, config
->max_height
);
3311 return ERR_PTR(-EINVAL
);
3314 if (r
->flags
& DRM_MODE_FB_MODIFIERS
&&
3315 !dev
->mode_config
.allow_fb_modifiers
) {
3316 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3317 return ERR_PTR(-EINVAL
);
3320 ret
= framebuffer_check(r
);
3322 return ERR_PTR(ret
);
3324 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3326 DRM_DEBUG_KMS("could not create framebuffer\n");
3334 * drm_mode_addfb2 - add an FB to the graphics configuration
3335 * @dev: drm device for the ioctl
3336 * @data: data pointer for the ioctl
3337 * @file_priv: drm file for the ioctl call
3339 * Add a new FB to the specified CRTC, given a user request with format. This is
3340 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3341 * and uses fourcc codes as pixel format specifiers.
3343 * Called by the user via ioctl.
3346 * Zero on success, negative errno on failure.
3348 int drm_mode_addfb2(struct drm_device
*dev
,
3349 void *data
, struct drm_file
*file_priv
)
3351 struct drm_mode_fb_cmd2
*r
= data
;
3352 struct drm_framebuffer
*fb
;
3354 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3357 fb
= internal_framebuffer_create(dev
, r
, file_priv
);
3361 /* Transfer ownership to the filp for reaping on close */
3363 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3364 mutex_lock(&file_priv
->fbs_lock
);
3365 r
->fb_id
= fb
->base
.id
;
3366 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3367 mutex_unlock(&file_priv
->fbs_lock
);
3373 * drm_mode_rmfb - remove an FB from the configuration
3374 * @dev: drm device for the ioctl
3375 * @data: data pointer for the ioctl
3376 * @file_priv: drm file for the ioctl call
3378 * Remove the FB specified by the user.
3380 * Called by the user via ioctl.
3383 * Zero on success, negative errno on failure.
3385 int drm_mode_rmfb(struct drm_device
*dev
,
3386 void *data
, struct drm_file
*file_priv
)
3388 struct drm_framebuffer
*fb
= NULL
;
3389 struct drm_framebuffer
*fbl
= NULL
;
3390 uint32_t *id
= data
;
3393 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3396 mutex_lock(&file_priv
->fbs_lock
);
3397 mutex_lock(&dev
->mode_config
.fb_lock
);
3398 fb
= __drm_framebuffer_lookup(dev
, *id
);
3402 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3408 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3409 __drm_framebuffer_unregister(dev
, fb
);
3411 list_del_init(&fb
->filp_head
);
3412 mutex_unlock(&dev
->mode_config
.fb_lock
);
3413 mutex_unlock(&file_priv
->fbs_lock
);
3415 drm_framebuffer_remove(fb
);
3420 mutex_unlock(&dev
->mode_config
.fb_lock
);
3421 mutex_unlock(&file_priv
->fbs_lock
);
3427 * drm_mode_getfb - get FB info
3428 * @dev: drm device for the ioctl
3429 * @data: data pointer for the ioctl
3430 * @file_priv: drm file for the ioctl call
3432 * Lookup the FB given its ID and return info about it.
3434 * Called by the user via ioctl.
3437 * Zero on success, negative errno on failure.
3439 int drm_mode_getfb(struct drm_device
*dev
,
3440 void *data
, struct drm_file
*file_priv
)
3442 struct drm_mode_fb_cmd
*r
= data
;
3443 struct drm_framebuffer
*fb
;
3446 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3449 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3453 r
->height
= fb
->height
;
3454 r
->width
= fb
->width
;
3455 r
->depth
= fb
->depth
;
3456 r
->bpp
= fb
->bits_per_pixel
;
3457 r
->pitch
= fb
->pitches
[0];
3458 if (fb
->funcs
->create_handle
) {
3459 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3460 drm_is_control_client(file_priv
)) {
3461 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3464 /* GET_FB() is an unprivileged ioctl so we must not
3465 * return a buffer-handle to non-master processes! For
3466 * backwards-compatibility reasons, we cannot make
3467 * GET_FB() privileged, so just return an invalid handle
3468 * for non-masters. */
3476 drm_framebuffer_unreference(fb
);
3482 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3483 * @dev: drm device for the ioctl
3484 * @data: data pointer for the ioctl
3485 * @file_priv: drm file for the ioctl call
3487 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3488 * rectangle list. Generic userspace which does frontbuffer rendering must call
3489 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3490 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3492 * Modesetting drivers which always update the frontbuffer do not need to
3493 * implement the corresponding ->dirty framebuffer callback.
3495 * Called by the user via ioctl.
3498 * Zero on success, negative errno on failure.
3500 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3501 void *data
, struct drm_file
*file_priv
)
3503 struct drm_clip_rect __user
*clips_ptr
;
3504 struct drm_clip_rect
*clips
= NULL
;
3505 struct drm_mode_fb_dirty_cmd
*r
= data
;
3506 struct drm_framebuffer
*fb
;
3511 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3514 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3518 num_clips
= r
->num_clips
;
3519 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3521 if (!num_clips
!= !clips_ptr
) {
3526 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3528 /* If userspace annotates copy, clips must come in pairs */
3529 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3534 if (num_clips
&& clips_ptr
) {
3535 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3539 clips
= kcalloc(num_clips
, sizeof(*clips
), GFP_KERNEL
);
3545 ret
= copy_from_user(clips
, clips_ptr
,
3546 num_clips
* sizeof(*clips
));
3553 if (fb
->funcs
->dirty
) {
3554 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3563 drm_framebuffer_unreference(fb
);
3570 * drm_fb_release - remove and free the FBs on this file
3571 * @priv: drm file for the ioctl
3573 * Destroy all the FBs associated with @filp.
3575 * Called by the user via ioctl.
3578 * Zero on success, negative errno on failure.
3580 void drm_fb_release(struct drm_file
*priv
)
3582 struct drm_device
*dev
= priv
->minor
->dev
;
3583 struct drm_framebuffer
*fb
, *tfb
;
3586 * When the file gets released that means no one else can access the fb
3587 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3588 * avoid upsetting lockdep since the universal cursor code adds a
3589 * framebuffer while holding mutex locks.
3591 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3592 * locks is impossible here since no one else but this function can get
3595 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3597 mutex_lock(&dev
->mode_config
.fb_lock
);
3598 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3599 __drm_framebuffer_unregister(dev
, fb
);
3600 mutex_unlock(&dev
->mode_config
.fb_lock
);
3602 list_del_init(&fb
->filp_head
);
3604 /* This will also drop the fpriv->fbs reference. */
3605 drm_framebuffer_remove(fb
);
3610 * drm_property_create - create a new property type
3612 * @flags: flags specifying the property type
3613 * @name: name of the property
3614 * @num_values: number of pre-defined values
3616 * This creates a new generic drm property which can then be attached to a drm
3617 * object with drm_object_attach_property. The returned property object must be
3618 * freed with drm_property_destroy.
3620 * Note that the DRM core keeps a per-device list of properties and that, if
3621 * drm_mode_config_cleanup() is called, it will destroy all properties created
3625 * A pointer to the newly created property on success, NULL on failure.
3627 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3628 const char *name
, int num_values
)
3630 struct drm_property
*property
= NULL
;
3633 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3637 property
->dev
= dev
;
3640 property
->values
= kcalloc(num_values
, sizeof(uint64_t),
3642 if (!property
->values
)
3646 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3650 property
->flags
= flags
;
3651 property
->num_values
= num_values
;
3652 INIT_LIST_HEAD(&property
->enum_list
);
3655 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3656 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3659 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3661 WARN_ON(!drm_property_type_valid(property
));
3665 kfree(property
->values
);
3669 EXPORT_SYMBOL(drm_property_create
);
3672 * drm_property_create_enum - create a new enumeration property type
3674 * @flags: flags specifying the property type
3675 * @name: name of the property
3676 * @props: enumeration lists with property values
3677 * @num_values: number of pre-defined values
3679 * This creates a new generic drm property which can then be attached to a drm
3680 * object with drm_object_attach_property. The returned property object must be
3681 * freed with drm_property_destroy.
3683 * Userspace is only allowed to set one of the predefined values for enumeration
3687 * A pointer to the newly created property on success, NULL on failure.
3689 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3691 const struct drm_prop_enum_list
*props
,
3694 struct drm_property
*property
;
3697 flags
|= DRM_MODE_PROP_ENUM
;
3699 property
= drm_property_create(dev
, flags
, name
, num_values
);
3703 for (i
= 0; i
< num_values
; i
++) {
3704 ret
= drm_property_add_enum(property
, i
,
3708 drm_property_destroy(dev
, property
);
3715 EXPORT_SYMBOL(drm_property_create_enum
);
3718 * drm_property_create_bitmask - create a new bitmask property type
3720 * @flags: flags specifying the property type
3721 * @name: name of the property
3722 * @props: enumeration lists with property bitflags
3723 * @num_props: size of the @props array
3724 * @supported_bits: bitmask of all supported enumeration values
3726 * This creates a new bitmask drm property which can then be attached to a drm
3727 * object with drm_object_attach_property. The returned property object must be
3728 * freed with drm_property_destroy.
3730 * Compared to plain enumeration properties userspace is allowed to set any
3731 * or'ed together combination of the predefined property bitflag values
3734 * A pointer to the newly created property on success, NULL on failure.
3736 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3737 int flags
, const char *name
,
3738 const struct drm_prop_enum_list
*props
,
3740 uint64_t supported_bits
)
3742 struct drm_property
*property
;
3743 int i
, ret
, index
= 0;
3744 int num_values
= hweight64(supported_bits
);
3746 flags
|= DRM_MODE_PROP_BITMASK
;
3748 property
= drm_property_create(dev
, flags
, name
, num_values
);
3751 for (i
= 0; i
< num_props
; i
++) {
3752 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3755 if (WARN_ON(index
>= num_values
)) {
3756 drm_property_destroy(dev
, property
);
3760 ret
= drm_property_add_enum(property
, index
++,
3764 drm_property_destroy(dev
, property
);
3771 EXPORT_SYMBOL(drm_property_create_bitmask
);
3773 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3774 int flags
, const char *name
,
3775 uint64_t min
, uint64_t max
)
3777 struct drm_property
*property
;
3779 property
= drm_property_create(dev
, flags
, name
, 2);
3783 property
->values
[0] = min
;
3784 property
->values
[1] = max
;
3790 * drm_property_create_range - create a new unsigned ranged property type
3792 * @flags: flags specifying the property type
3793 * @name: name of the property
3794 * @min: minimum value of the property
3795 * @max: maximum value of the property
3797 * This creates a new generic drm property which can then be attached to a drm
3798 * object with drm_object_attach_property. The returned property object must be
3799 * freed with drm_property_destroy.
3801 * Userspace is allowed to set any unsigned integer value in the (min, max)
3805 * A pointer to the newly created property on success, NULL on failure.
3807 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3809 uint64_t min
, uint64_t max
)
3811 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3814 EXPORT_SYMBOL(drm_property_create_range
);
3817 * drm_property_create_signed_range - create a new signed ranged property type
3819 * @flags: flags specifying the property type
3820 * @name: name of the property
3821 * @min: minimum value of the property
3822 * @max: maximum value of the property
3824 * This creates a new generic drm property which can then be attached to a drm
3825 * object with drm_object_attach_property. The returned property object must be
3826 * freed with drm_property_destroy.
3828 * Userspace is allowed to set any signed integer value in the (min, max)
3832 * A pointer to the newly created property on success, NULL on failure.
3834 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3835 int flags
, const char *name
,
3836 int64_t min
, int64_t max
)
3838 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3839 name
, I642U64(min
), I642U64(max
));
3841 EXPORT_SYMBOL(drm_property_create_signed_range
);
3844 * drm_property_create_object - create a new object property type
3846 * @flags: flags specifying the property type
3847 * @name: name of the property
3848 * @type: object type from DRM_MODE_OBJECT_* defines
3850 * This creates a new generic drm property which can then be attached to a drm
3851 * object with drm_object_attach_property. The returned property object must be
3852 * freed with drm_property_destroy.
3854 * Userspace is only allowed to set this to any property value of the given
3855 * @type. Only useful for atomic properties, which is enforced.
3858 * A pointer to the newly created property on success, NULL on failure.
3860 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3861 int flags
, const char *name
, uint32_t type
)
3863 struct drm_property
*property
;
3865 flags
|= DRM_MODE_PROP_OBJECT
;
3867 if (WARN_ON(!(flags
& DRM_MODE_PROP_ATOMIC
)))
3870 property
= drm_property_create(dev
, flags
, name
, 1);
3874 property
->values
[0] = type
;
3878 EXPORT_SYMBOL(drm_property_create_object
);
3881 * drm_property_create_bool - create a new boolean property type
3883 * @flags: flags specifying the property type
3884 * @name: name of the property
3886 * This creates a new generic drm property which can then be attached to a drm
3887 * object with drm_object_attach_property. The returned property object must be
3888 * freed with drm_property_destroy.
3890 * This is implemented as a ranged property with only {0, 1} as valid values.
3893 * A pointer to the newly created property on success, NULL on failure.
3895 struct drm_property
*drm_property_create_bool(struct drm_device
*dev
, int flags
,
3898 return drm_property_create_range(dev
, flags
, name
, 0, 1);
3900 EXPORT_SYMBOL(drm_property_create_bool
);
3903 * drm_property_add_enum - add a possible value to an enumeration property
3904 * @property: enumeration property to change
3905 * @index: index of the new enumeration
3906 * @value: value of the new enumeration
3907 * @name: symbolic name of the new enumeration
3909 * This functions adds enumerations to a property.
3911 * It's use is deprecated, drivers should use one of the more specific helpers
3912 * to directly create the property with all enumerations already attached.
3915 * Zero on success, error code on failure.
3917 int drm_property_add_enum(struct drm_property
*property
, int index
,
3918 uint64_t value
, const char *name
)
3920 struct drm_property_enum
*prop_enum
;
3922 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3923 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3927 * Bitmask enum properties have the additional constraint of values
3930 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3934 if (!list_empty(&property
->enum_list
)) {
3935 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3936 if (prop_enum
->value
== value
) {
3937 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3938 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3944 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3948 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3949 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3950 prop_enum
->value
= value
;
3952 property
->values
[index
] = value
;
3953 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
3956 EXPORT_SYMBOL(drm_property_add_enum
);
3959 * drm_property_destroy - destroy a drm property
3961 * @property: property to destry
3963 * This function frees a property including any attached resources like
3964 * enumeration values.
3966 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3968 struct drm_property_enum
*prop_enum
, *pt
;
3970 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
3971 list_del(&prop_enum
->head
);
3975 if (property
->num_values
)
3976 kfree(property
->values
);
3977 drm_mode_object_put(dev
, &property
->base
);
3978 list_del(&property
->head
);
3981 EXPORT_SYMBOL(drm_property_destroy
);
3984 * drm_object_attach_property - attach a property to a modeset object
3985 * @obj: drm modeset object
3986 * @property: property to attach
3987 * @init_val: initial value of the property
3989 * This attaches the given property to the modeset object with the given initial
3990 * value. Currently this function cannot fail since the properties are stored in
3991 * a statically sized array.
3993 void drm_object_attach_property(struct drm_mode_object
*obj
,
3994 struct drm_property
*property
,
3997 int count
= obj
->properties
->count
;
3999 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
4000 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4001 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4002 "you see this message on the same object type.\n",
4007 obj
->properties
->properties
[count
] = property
;
4008 obj
->properties
->values
[count
] = init_val
;
4009 obj
->properties
->count
++;
4010 if (property
->flags
& DRM_MODE_PROP_ATOMIC
)
4011 obj
->properties
->atomic_count
++;
4013 EXPORT_SYMBOL(drm_object_attach_property
);
4016 * drm_object_property_set_value - set the value of a property
4017 * @obj: drm mode object to set property value for
4018 * @property: property to set
4019 * @val: value the property should be set to
4021 * This functions sets a given property on a given object. This function only
4022 * changes the software state of the property, it does not call into the
4023 * driver's ->set_property callback.
4026 * Zero on success, error code on failure.
4028 int drm_object_property_set_value(struct drm_mode_object
*obj
,
4029 struct drm_property
*property
, uint64_t val
)
4033 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4034 if (obj
->properties
->properties
[i
] == property
) {
4035 obj
->properties
->values
[i
] = val
;
4042 EXPORT_SYMBOL(drm_object_property_set_value
);
4045 * drm_object_property_get_value - retrieve the value of a property
4046 * @obj: drm mode object to get property value from
4047 * @property: property to retrieve
4048 * @val: storage for the property value
4050 * This function retrieves the softare state of the given property for the given
4051 * property. Since there is no driver callback to retrieve the current property
4052 * value this might be out of sync with the hardware, depending upon the driver
4056 * Zero on success, error code on failure.
4058 int drm_object_property_get_value(struct drm_mode_object
*obj
,
4059 struct drm_property
*property
, uint64_t *val
)
4063 /* read-only properties bypass atomic mechanism and still store
4064 * their value in obj->properties->values[].. mostly to avoid
4065 * having to deal w/ EDID and similar props in atomic paths:
4067 if (drm_core_check_feature(property
->dev
, DRIVER_ATOMIC
) &&
4068 !(property
->flags
& DRM_MODE_PROP_IMMUTABLE
))
4069 return drm_atomic_get_property(obj
, property
, val
);
4071 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4072 if (obj
->properties
->properties
[i
] == property
) {
4073 *val
= obj
->properties
->values
[i
];
4080 EXPORT_SYMBOL(drm_object_property_get_value
);
4083 * drm_mode_getproperty_ioctl - get the property metadata
4086 * @file_priv: DRM file info
4088 * This function retrieves the metadata for a given property, like the different
4089 * possible values for an enum property or the limits for a range property.
4091 * Blob properties are special
4093 * Called by the user via ioctl.
4096 * Zero on success, negative errno on failure.
4098 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
4099 void *data
, struct drm_file
*file_priv
)
4101 struct drm_mode_get_property
*out_resp
= data
;
4102 struct drm_property
*property
;
4104 int value_count
= 0;
4107 struct drm_property_enum
*prop_enum
;
4108 struct drm_mode_property_enum __user
*enum_ptr
;
4109 uint64_t __user
*values_ptr
;
4111 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4114 drm_modeset_lock_all(dev
);
4115 property
= drm_property_find(dev
, out_resp
->prop_id
);
4121 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4122 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4123 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
4127 value_count
= property
->num_values
;
4129 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
4130 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
4131 out_resp
->flags
= property
->flags
;
4133 if ((out_resp
->count_values
>= value_count
) && value_count
) {
4134 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
4135 for (i
= 0; i
< value_count
; i
++) {
4136 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
4142 out_resp
->count_values
= value_count
;
4144 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4145 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4146 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
4148 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
4149 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
4151 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
4156 if (copy_to_user(&enum_ptr
[copied
].name
,
4157 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
4164 out_resp
->count_enum_blobs
= enum_count
;
4168 * NOTE: The idea seems to have been to use this to read all the blob
4169 * property values. But nothing ever added them to the corresponding
4170 * list, userspace always used the special-purpose get_blob ioctl to
4171 * read the value for a blob property. It also doesn't make a lot of
4172 * sense to return values here when everything else is just metadata for
4173 * the property itself.
4175 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4176 out_resp
->count_enum_blobs
= 0;
4178 drm_modeset_unlock_all(dev
);
4183 * drm_property_create_blob - Create new blob property
4185 * Creates a new blob property for a specified DRM device, optionally
4188 * @dev: DRM device to create property for
4189 * @length: Length to allocate for blob data
4190 * @data: If specified, copies data into blob
4193 * New blob property with a single reference on success, or an ERR_PTR
4196 struct drm_property_blob
*
4197 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
4200 struct drm_property_blob
*blob
;
4204 return ERR_PTR(-EINVAL
);
4206 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
4208 return ERR_PTR(-ENOMEM
);
4210 /* This must be explicitly initialised, so we can safely call list_del
4211 * on it in the removal handler, even if it isn't in a file list. */
4212 INIT_LIST_HEAD(&blob
->head_file
);
4213 blob
->length
= length
;
4217 memcpy(blob
->data
, data
, length
);
4219 mutex_lock(&dev
->mode_config
.blob_lock
);
4221 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
4224 mutex_unlock(&dev
->mode_config
.blob_lock
);
4225 return ERR_PTR(-EINVAL
);
4228 kref_init(&blob
->refcount
);
4230 list_add_tail(&blob
->head_global
,
4231 &dev
->mode_config
.property_blob_list
);
4233 mutex_unlock(&dev
->mode_config
.blob_lock
);
4237 EXPORT_SYMBOL(drm_property_create_blob
);
4240 * drm_property_free_blob - Blob property destructor
4242 * Internal free function for blob properties; must not be used directly.
4246 static void drm_property_free_blob(struct kref
*kref
)
4248 struct drm_property_blob
*blob
=
4249 container_of(kref
, struct drm_property_blob
, refcount
);
4251 WARN_ON(!mutex_is_locked(&blob
->dev
->mode_config
.blob_lock
));
4253 list_del(&blob
->head_global
);
4254 list_del(&blob
->head_file
);
4255 drm_mode_object_put(blob
->dev
, &blob
->base
);
4261 * drm_property_unreference_blob - Unreference a blob property
4263 * Drop a reference on a blob property. May free the object.
4265 * @blob: Pointer to blob property
4267 void drm_property_unreference_blob(struct drm_property_blob
*blob
)
4269 struct drm_device
*dev
;
4276 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4278 if (kref_put_mutex(&blob
->refcount
, drm_property_free_blob
,
4279 &dev
->mode_config
.blob_lock
))
4280 mutex_unlock(&dev
->mode_config
.blob_lock
);
4282 might_lock(&dev
->mode_config
.blob_lock
);
4285 EXPORT_SYMBOL(drm_property_unreference_blob
);
4288 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4290 * Drop a reference on a blob property. May free the object. This must be
4291 * called with blob_lock held.
4293 * @blob: Pointer to blob property
4295 static void drm_property_unreference_blob_locked(struct drm_property_blob
*blob
)
4300 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4302 kref_put(&blob
->refcount
, drm_property_free_blob
);
4306 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4308 * @file_priv: destroy all blobs owned by this file handle
4310 void drm_property_destroy_user_blobs(struct drm_device
*dev
,
4311 struct drm_file
*file_priv
)
4313 struct drm_property_blob
*blob
, *bt
;
4315 mutex_lock(&dev
->mode_config
.blob_lock
);
4317 list_for_each_entry_safe(blob
, bt
, &file_priv
->blobs
, head_file
) {
4318 list_del_init(&blob
->head_file
);
4319 drm_property_unreference_blob_locked(blob
);
4322 mutex_unlock(&dev
->mode_config
.blob_lock
);
4326 * drm_property_reference_blob - Take a reference on an existing property
4328 * Take a new reference on an existing blob property.
4330 * @blob: Pointer to blob property
4332 struct drm_property_blob
*drm_property_reference_blob(struct drm_property_blob
*blob
)
4334 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4335 kref_get(&blob
->refcount
);
4338 EXPORT_SYMBOL(drm_property_reference_blob
);
4341 * Like drm_property_lookup_blob, but does not return an additional reference.
4342 * Must be called with blob_lock held.
4344 static struct drm_property_blob
*__drm_property_lookup_blob(struct drm_device
*dev
,
4347 struct drm_mode_object
*obj
= NULL
;
4348 struct drm_property_blob
*blob
;
4350 WARN_ON(!mutex_is_locked(&dev
->mode_config
.blob_lock
));
4352 mutex_lock(&dev
->mode_config
.idr_mutex
);
4353 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
4354 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_BLOB
) || (obj
->id
!= id
))
4357 blob
= obj_to_blob(obj
);
4358 mutex_unlock(&dev
->mode_config
.idr_mutex
);
4364 * drm_property_lookup_blob - look up a blob property and take a reference
4366 * @id: id of the blob property
4368 * If successful, this takes an additional reference to the blob property.
4369 * callers need to make sure to eventually unreference the returned property
4370 * again, using @drm_property_unreference_blob.
4372 struct drm_property_blob
*drm_property_lookup_blob(struct drm_device
*dev
,
4375 struct drm_property_blob
*blob
;
4377 mutex_lock(&dev
->mode_config
.blob_lock
);
4378 blob
= __drm_property_lookup_blob(dev
, id
);
4380 if (!kref_get_unless_zero(&blob
->refcount
))
4383 mutex_unlock(&dev
->mode_config
.blob_lock
);
4387 EXPORT_SYMBOL(drm_property_lookup_blob
);
4390 * drm_property_replace_global_blob - atomically replace existing blob property
4392 * @replace: location of blob property pointer to be replaced
4393 * @length: length of data for new blob, or 0 for no data
4394 * @data: content for new blob, or NULL for no data
4395 * @obj_holds_id: optional object for property holding blob ID
4396 * @prop_holds_id: optional property holding blob ID
4397 * @return 0 on success or error on failure
4399 * This function will atomically replace a global property in the blob list,
4400 * optionally updating a property which holds the ID of that property. It is
4401 * guaranteed to be atomic: no caller will be allowed to see intermediate
4402 * results, and either the entire operation will succeed and clean up the
4403 * previous property, or it will fail and the state will be unchanged.
4405 * If length is 0 or data is NULL, no new blob will be created, and the holding
4406 * property, if specified, will be set to 0.
4408 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4409 * by holding the relevant modesetting object lock for its parent.
4411 * For example, a drm_connector has a 'PATH' property, which contains the ID
4412 * of a blob property with the value of the MST path information. Calling this
4413 * function with replace pointing to the connector's path_blob_ptr, length and
4414 * data set for the new path information, obj_holds_id set to the connector's
4415 * base object, and prop_holds_id set to the path property name, will perform
4416 * a completely atomic update. The access to path_blob_ptr is protected by the
4417 * caller holding a lock on the connector.
4419 static int drm_property_replace_global_blob(struct drm_device
*dev
,
4420 struct drm_property_blob
**replace
,
4423 struct drm_mode_object
*obj_holds_id
,
4424 struct drm_property
*prop_holds_id
)
4426 struct drm_property_blob
*new_blob
= NULL
;
4427 struct drm_property_blob
*old_blob
= NULL
;
4430 WARN_ON(replace
== NULL
);
4432 old_blob
= *replace
;
4434 if (length
&& data
) {
4435 new_blob
= drm_property_create_blob(dev
, length
, data
);
4436 if (IS_ERR(new_blob
))
4437 return PTR_ERR(new_blob
);
4440 /* This does not need to be synchronised with blob_lock, as the
4441 * get_properties ioctl locks all modesetting objects, and
4442 * obj_holds_id must be locked before calling here, so we cannot
4443 * have its value out of sync with the list membership modified
4444 * below under blob_lock. */
4446 ret
= drm_object_property_set_value(obj_holds_id
,
4449 new_blob
->base
.id
: 0);
4455 drm_property_unreference_blob(old_blob
);
4457 *replace
= new_blob
;
4462 drm_property_unreference_blob(new_blob
);
4467 * drm_mode_getblob_ioctl - get the contents of a blob property value
4470 * @file_priv: DRM file info
4472 * This function retrieves the contents of a blob property. The value stored in
4473 * an object's blob property is just a normal modeset object id.
4475 * Called by the user via ioctl.
4478 * Zero on success, negative errno on failure.
4480 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
4481 void *data
, struct drm_file
*file_priv
)
4483 struct drm_mode_get_blob
*out_resp
= data
;
4484 struct drm_property_blob
*blob
;
4486 void __user
*blob_ptr
;
4488 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4491 drm_modeset_lock_all(dev
);
4492 mutex_lock(&dev
->mode_config
.blob_lock
);
4493 blob
= __drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4499 if (out_resp
->length
== blob
->length
) {
4500 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4501 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)) {
4506 out_resp
->length
= blob
->length
;
4509 mutex_unlock(&dev
->mode_config
.blob_lock
);
4510 drm_modeset_unlock_all(dev
);
4515 * drm_mode_createblob_ioctl - create a new blob property
4518 * @file_priv: DRM file info
4520 * This function creates a new blob property with user-defined values. In order
4521 * to give us sensible validation and checking when creating, rather than at
4522 * every potential use, we also require a type to be provided upfront.
4524 * Called by the user via ioctl.
4527 * Zero on success, negative errno on failure.
4529 int drm_mode_createblob_ioctl(struct drm_device
*dev
,
4530 void *data
, struct drm_file
*file_priv
)
4532 struct drm_mode_create_blob
*out_resp
= data
;
4533 struct drm_property_blob
*blob
;
4534 void __user
*blob_ptr
;
4537 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4540 blob
= drm_property_create_blob(dev
, out_resp
->length
, NULL
);
4542 return PTR_ERR(blob
);
4544 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4545 if (copy_from_user(blob
->data
, blob_ptr
, out_resp
->length
)) {
4550 /* Dropping the lock between create_blob and our access here is safe
4551 * as only the same file_priv can remove the blob; at this point, it is
4552 * not associated with any file_priv. */
4553 mutex_lock(&dev
->mode_config
.blob_lock
);
4554 out_resp
->blob_id
= blob
->base
.id
;
4555 list_add_tail(&file_priv
->blobs
, &blob
->head_file
);
4556 mutex_unlock(&dev
->mode_config
.blob_lock
);
4561 drm_property_unreference_blob(blob
);
4566 * drm_mode_destroyblob_ioctl - destroy a user blob property
4569 * @file_priv: DRM file info
4571 * Destroy an existing user-defined blob property.
4573 * Called by the user via ioctl.
4576 * Zero on success, negative errno on failure.
4578 int drm_mode_destroyblob_ioctl(struct drm_device
*dev
,
4579 void *data
, struct drm_file
*file_priv
)
4581 struct drm_mode_destroy_blob
*out_resp
= data
;
4582 struct drm_property_blob
*blob
= NULL
, *bt
;
4586 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4589 mutex_lock(&dev
->mode_config
.blob_lock
);
4590 blob
= __drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4596 /* Ensure the property was actually created by this user. */
4597 list_for_each_entry(bt
, &file_priv
->blobs
, head_file
) {
4609 /* We must drop head_file here, because we may not be the last
4610 * reference on the blob. */
4611 list_del_init(&blob
->head_file
);
4612 drm_property_unreference_blob_locked(blob
);
4613 mutex_unlock(&dev
->mode_config
.blob_lock
);
4618 mutex_unlock(&dev
->mode_config
.blob_lock
);
4623 * drm_mode_connector_set_path_property - set tile property on connector
4624 * @connector: connector to set property on.
4625 * @path: path to use for property; must not be NULL.
4627 * This creates a property to expose to userspace to specify a
4628 * connector path. This is mainly used for DisplayPort MST where
4629 * connectors have a topology and we want to allow userspace to give
4630 * them more meaningful names.
4633 * Zero on success, negative errno on failure.
4635 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4638 struct drm_device
*dev
= connector
->dev
;
4641 ret
= drm_property_replace_global_blob(dev
,
4642 &connector
->path_blob_ptr
,
4646 dev
->mode_config
.path_property
);
4649 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4652 * drm_mode_connector_set_tile_property - set tile property on connector
4653 * @connector: connector to set property on.
4655 * This looks up the tile information for a connector, and creates a
4656 * property for userspace to parse if it exists. The property is of
4657 * the form of 8 integers using ':' as a separator.
4660 * Zero on success, errno on failure.
4662 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
)
4664 struct drm_device
*dev
= connector
->dev
;
4668 if (!connector
->has_tile
) {
4669 ret
= drm_property_replace_global_blob(dev
,
4670 &connector
->tile_blob_ptr
,
4674 dev
->mode_config
.tile_property
);
4678 snprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4679 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
4680 connector
->num_h_tile
, connector
->num_v_tile
,
4681 connector
->tile_h_loc
, connector
->tile_v_loc
,
4682 connector
->tile_h_size
, connector
->tile_v_size
);
4684 ret
= drm_property_replace_global_blob(dev
,
4685 &connector
->tile_blob_ptr
,
4689 dev
->mode_config
.tile_property
);
4692 EXPORT_SYMBOL(drm_mode_connector_set_tile_property
);
4695 * drm_mode_connector_update_edid_property - update the edid property of a connector
4696 * @connector: drm connector
4697 * @edid: new value of the edid property
4699 * This function creates a new blob modeset object and assigns its id to the
4700 * connector's edid property.
4703 * Zero on success, negative errno on failure.
4705 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4706 const struct edid
*edid
)
4708 struct drm_device
*dev
= connector
->dev
;
4712 /* ignore requests to set edid when overridden */
4713 if (connector
->override_edid
)
4717 size
= EDID_LENGTH
+ (1 + edid
->extensions
);
4719 ret
= drm_property_replace_global_blob(dev
,
4720 &connector
->edid_blob_ptr
,
4724 dev
->mode_config
.edid_property
);
4727 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4729 /* Some properties could refer to dynamic refcnt'd objects, or things that
4730 * need special locking to handle lifetime issues (ie. to ensure the prop
4731 * value doesn't become invalid part way through the property update due to
4732 * race). The value returned by reference via 'obj' should be passed back
4733 * to drm_property_change_valid_put() after the property is set (and the
4734 * object to which the property is attached has a chance to take it's own
4737 bool drm_property_change_valid_get(struct drm_property
*property
,
4738 uint64_t value
, struct drm_mode_object
**ref
)
4742 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4747 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4748 if (value
< property
->values
[0] || value
> property
->values
[1])
4751 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4752 int64_t svalue
= U642I64(value
);
4754 if (svalue
< U642I64(property
->values
[0]) ||
4755 svalue
> U642I64(property
->values
[1]))
4758 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4759 uint64_t valid_mask
= 0;
4761 for (i
= 0; i
< property
->num_values
; i
++)
4762 valid_mask
|= (1ULL << property
->values
[i
]);
4763 return !(value
& ~valid_mask
);
4764 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4765 struct drm_property_blob
*blob
;
4770 blob
= drm_property_lookup_blob(property
->dev
, value
);
4777 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4778 /* a zero value for an object property translates to null: */
4782 /* handle refcnt'd objects specially: */
4783 if (property
->values
[0] == DRM_MODE_OBJECT_FB
) {
4784 struct drm_framebuffer
*fb
;
4785 fb
= drm_framebuffer_lookup(property
->dev
, value
);
4793 return _object_find(property
->dev
, value
, property
->values
[0]) != NULL
;
4797 for (i
= 0; i
< property
->num_values
; i
++)
4798 if (property
->values
[i
] == value
)
4803 void drm_property_change_valid_put(struct drm_property
*property
,
4804 struct drm_mode_object
*ref
)
4809 if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4810 if (property
->values
[0] == DRM_MODE_OBJECT_FB
)
4811 drm_framebuffer_unreference(obj_to_fb(ref
));
4812 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4813 drm_property_unreference_blob(obj_to_blob(ref
));
4817 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4820 * @file_priv: DRM file info
4822 * This function sets the current value for a connectors's property. It also
4823 * calls into a driver's ->set_property callback to update the hardware state
4825 * Called by the user via ioctl.
4828 * Zero on success, negative errno on failure.
4830 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4831 void *data
, struct drm_file
*file_priv
)
4833 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4834 struct drm_mode_obj_set_property obj_set_prop
= {
4835 .value
= conn_set_prop
->value
,
4836 .prop_id
= conn_set_prop
->prop_id
,
4837 .obj_id
= conn_set_prop
->connector_id
,
4838 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4841 /* It does all the locking and checking we need */
4842 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4845 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4846 struct drm_property
*property
,
4850 struct drm_connector
*connector
= obj_to_connector(obj
);
4852 /* Do DPMS ourselves */
4853 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4854 if (connector
->funcs
->dpms
)
4855 (*connector
->funcs
->dpms
)(connector
, (int)value
);
4857 } else if (connector
->funcs
->set_property
)
4858 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4860 /* store the property value if successful */
4862 drm_object_property_set_value(&connector
->base
, property
, value
);
4866 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4867 struct drm_property
*property
,
4871 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4873 if (crtc
->funcs
->set_property
)
4874 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4876 drm_object_property_set_value(obj
, property
, value
);
4882 * drm_mode_plane_set_obj_prop - set the value of a property
4883 * @plane: drm plane object to set property value for
4884 * @property: property to set
4885 * @value: value the property should be set to
4887 * This functions sets a given property on a given plane object. This function
4888 * calls the driver's ->set_property callback and changes the software state of
4889 * the property if the callback succeeds.
4892 * Zero on success, error code on failure.
4894 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4895 struct drm_property
*property
,
4899 struct drm_mode_object
*obj
= &plane
->base
;
4901 if (plane
->funcs
->set_property
)
4902 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4904 drm_object_property_set_value(obj
, property
, value
);
4908 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4911 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4914 * @file_priv: DRM file info
4916 * This function retrieves the current value for an object's property. Compared
4917 * to the connector specific ioctl this one is extended to also work on crtc and
4920 * Called by the user via ioctl.
4923 * Zero on success, negative errno on failure.
4925 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4926 struct drm_file
*file_priv
)
4928 struct drm_mode_obj_get_properties
*arg
= data
;
4929 struct drm_mode_object
*obj
;
4932 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4935 drm_modeset_lock_all(dev
);
4937 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4942 if (!obj
->properties
) {
4947 ret
= get_properties(obj
, file_priv
->atomic
,
4948 (uint32_t __user
*)(unsigned long)(arg
->props_ptr
),
4949 (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
),
4953 drm_modeset_unlock_all(dev
);
4958 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4961 * @file_priv: DRM file info
4963 * This function sets the current value for an object's property. It also calls
4964 * into a driver's ->set_property callback to update the hardware state.
4965 * Compared to the connector specific ioctl this one is extended to also work on
4966 * crtc and plane objects.
4968 * Called by the user via ioctl.
4971 * Zero on success, negative errno on failure.
4973 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4974 struct drm_file
*file_priv
)
4976 struct drm_mode_obj_set_property
*arg
= data
;
4977 struct drm_mode_object
*arg_obj
;
4978 struct drm_mode_object
*prop_obj
;
4979 struct drm_property
*property
;
4980 int i
, ret
= -EINVAL
;
4981 struct drm_mode_object
*ref
;
4983 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4986 drm_modeset_lock_all(dev
);
4988 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4993 if (!arg_obj
->properties
)
4996 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4997 if (arg_obj
->properties
->properties
[i
]->base
.id
== arg
->prop_id
)
5000 if (i
== arg_obj
->properties
->count
)
5003 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
5004 DRM_MODE_OBJECT_PROPERTY
);
5009 property
= obj_to_property(prop_obj
);
5011 if (!drm_property_change_valid_get(property
, arg
->value
, &ref
))
5014 switch (arg_obj
->type
) {
5015 case DRM_MODE_OBJECT_CONNECTOR
:
5016 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
5019 case DRM_MODE_OBJECT_CRTC
:
5020 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
5022 case DRM_MODE_OBJECT_PLANE
:
5023 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
5024 property
, arg
->value
);
5028 drm_property_change_valid_put(property
, ref
);
5031 drm_modeset_unlock_all(dev
);
5036 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5037 * @connector: connector to attach
5038 * @encoder: encoder to attach @connector to
5040 * This function links up a connector to an encoder. Note that the routing
5041 * restrictions between encoders and crtcs are exposed to userspace through the
5042 * possible_clones and possible_crtcs bitmasks.
5045 * Zero on success, negative errno on failure.
5047 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
5048 struct drm_encoder
*encoder
)
5052 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
5053 if (connector
->encoder_ids
[i
] == 0) {
5054 connector
->encoder_ids
[i
] = encoder
->base
.id
;
5060 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
5063 * drm_mode_crtc_set_gamma_size - set the gamma table size
5064 * @crtc: CRTC to set the gamma table size for
5065 * @gamma_size: size of the gamma table
5067 * Drivers which support gamma tables should set this to the supported gamma
5068 * table size when initializing the CRTC. Currently the drm core only supports a
5069 * fixed gamma table size.
5072 * Zero on success, negative errno on failure.
5074 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
5077 crtc
->gamma_size
= gamma_size
;
5079 crtc
->gamma_store
= kcalloc(gamma_size
, sizeof(uint16_t) * 3,
5081 if (!crtc
->gamma_store
) {
5082 crtc
->gamma_size
= 0;
5088 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
5091 * drm_mode_gamma_set_ioctl - set the gamma table
5094 * @file_priv: DRM file info
5096 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5097 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5099 * Called by the user via ioctl.
5102 * Zero on success, negative errno on failure.
5104 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
5105 void *data
, struct drm_file
*file_priv
)
5107 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5108 struct drm_crtc
*crtc
;
5109 void *r_base
, *g_base
, *b_base
;
5113 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5116 drm_modeset_lock_all(dev
);
5117 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5123 if (crtc
->funcs
->gamma_set
== NULL
) {
5128 /* memcpy into gamma store */
5129 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5134 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5135 r_base
= crtc
->gamma_store
;
5136 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
5141 g_base
= r_base
+ size
;
5142 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
5147 b_base
= g_base
+ size
;
5148 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
5153 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
5156 drm_modeset_unlock_all(dev
);
5162 * drm_mode_gamma_get_ioctl - get the gamma table
5165 * @file_priv: DRM file info
5167 * Copy the current gamma table into the storage provided. This also provides
5168 * the gamma table size the driver expects, which can be used to size the
5169 * allocated storage.
5171 * Called by the user via ioctl.
5174 * Zero on success, negative errno on failure.
5176 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
5177 void *data
, struct drm_file
*file_priv
)
5179 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5180 struct drm_crtc
*crtc
;
5181 void *r_base
, *g_base
, *b_base
;
5185 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5188 drm_modeset_lock_all(dev
);
5189 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5195 /* memcpy into gamma store */
5196 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5201 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5202 r_base
= crtc
->gamma_store
;
5203 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
5208 g_base
= r_base
+ size
;
5209 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
5214 b_base
= g_base
+ size
;
5215 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
5220 drm_modeset_unlock_all(dev
);
5225 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5228 * @file_priv: DRM file info
5230 * This schedules an asynchronous update on a given CRTC, called page flip.
5231 * Optionally a drm event is generated to signal the completion of the event.
5232 * Generic drivers cannot assume that a pageflip with changed framebuffer
5233 * properties (including driver specific metadata like tiling layout) will work,
5234 * but some drivers support e.g. pixel format changes through the pageflip
5237 * Called by the user via ioctl.
5240 * Zero on success, negative errno on failure.
5242 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
5243 void *data
, struct drm_file
*file_priv
)
5245 struct drm_mode_crtc_page_flip
*page_flip
= data
;
5246 struct drm_crtc
*crtc
;
5247 struct drm_framebuffer
*fb
= NULL
;
5248 struct drm_pending_vblank_event
*e
= NULL
;
5249 unsigned long flags
;
5252 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
5253 page_flip
->reserved
!= 0)
5256 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
5259 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
5263 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
5264 if (crtc
->primary
->fb
== NULL
) {
5265 /* The framebuffer is currently unbound, presumably
5266 * due to a hotplug event, that userspace has not
5273 if (crtc
->funcs
->page_flip
== NULL
)
5276 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
5282 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
5286 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
5287 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5292 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5294 spin_lock_irqsave(&dev
->event_lock
, flags
);
5295 if (file_priv
->event_space
< sizeof(e
->event
)) {
5296 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5299 file_priv
->event_space
-= sizeof(e
->event
);
5300 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5302 e
= kzalloc(sizeof(*e
), GFP_KERNEL
);
5304 spin_lock_irqsave(&dev
->event_lock
, flags
);
5305 file_priv
->event_space
+= sizeof(e
->event
);
5306 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5310 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
5311 e
->event
.base
.length
= sizeof(e
->event
);
5312 e
->event
.user_data
= page_flip
->user_data
;
5313 e
->base
.event
= &e
->event
.base
;
5314 e
->base
.file_priv
= file_priv
;
5316 (void (*) (struct drm_pending_event
*)) kfree
;
5319 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
5320 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
5322 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5323 spin_lock_irqsave(&dev
->event_lock
, flags
);
5324 file_priv
->event_space
+= sizeof(e
->event
);
5325 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5328 /* Keep the old fb, don't unref it. */
5329 crtc
->primary
->old_fb
= NULL
;
5332 * Warn if the driver hasn't properly updated the crtc->fb
5333 * field to reflect that the new framebuffer is now used.
5334 * Failing to do so will screw with the reference counting
5337 WARN_ON(crtc
->primary
->fb
!= fb
);
5338 /* Unref only the old framebuffer. */
5344 drm_framebuffer_unreference(fb
);
5345 if (crtc
->primary
->old_fb
)
5346 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
5347 crtc
->primary
->old_fb
= NULL
;
5348 drm_modeset_unlock_crtc(crtc
);
5354 * drm_mode_config_reset - call ->reset callbacks
5357 * This functions calls all the crtc's, encoder's and connector's ->reset
5358 * callback. Drivers can use this in e.g. their driver load or resume code to
5359 * reset hardware and software state.
5361 void drm_mode_config_reset(struct drm_device
*dev
)
5363 struct drm_crtc
*crtc
;
5364 struct drm_plane
*plane
;
5365 struct drm_encoder
*encoder
;
5366 struct drm_connector
*connector
;
5368 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
)
5369 if (plane
->funcs
->reset
)
5370 plane
->funcs
->reset(plane
);
5372 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
5373 if (crtc
->funcs
->reset
)
5374 crtc
->funcs
->reset(crtc
);
5376 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
5377 if (encoder
->funcs
->reset
)
5378 encoder
->funcs
->reset(encoder
);
5380 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
5381 connector
->status
= connector_status_unknown
;
5383 if (connector
->funcs
->reset
)
5384 connector
->funcs
->reset(connector
);
5387 EXPORT_SYMBOL(drm_mode_config_reset
);
5390 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5393 * @file_priv: DRM file info
5395 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5396 * TTM or something else entirely) and returns the resulting buffer handle. This
5397 * handle can then be wrapped up into a framebuffer modeset object.
5399 * Note that userspace is not allowed to use such objects for render
5400 * acceleration - drivers must create their own private ioctls for such a use
5403 * Called by the user via ioctl.
5406 * Zero on success, negative errno on failure.
5408 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
5409 void *data
, struct drm_file
*file_priv
)
5411 struct drm_mode_create_dumb
*args
= data
;
5412 u32 cpp
, stride
, size
;
5414 if (!dev
->driver
->dumb_create
)
5416 if (!args
->width
|| !args
->height
|| !args
->bpp
)
5419 /* overflow checks for 32bit size calculations */
5420 /* NOTE: DIV_ROUND_UP() can overflow */
5421 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
5422 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
5424 stride
= cpp
* args
->width
;
5425 if (args
->height
> 0xffffffffU
/ stride
)
5428 /* test for wrap-around */
5429 size
= args
->height
* stride
;
5430 if (PAGE_ALIGN(size
) == 0)
5434 * handle, pitch and size are output parameters. Zero them out to
5435 * prevent drivers from accidentally using uninitialized data. Since
5436 * not all existing userspace is clearing these fields properly we
5437 * cannot reject IOCTL with garbage in them.
5443 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
5447 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5450 * @file_priv: DRM file info
5452 * Allocate an offset in the drm device node's address space to be able to
5453 * memory map a dumb buffer.
5455 * Called by the user via ioctl.
5458 * Zero on success, negative errno on failure.
5460 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
5461 void *data
, struct drm_file
*file_priv
)
5463 struct drm_mode_map_dumb
*args
= data
;
5465 /* call driver ioctl to get mmap offset */
5466 if (!dev
->driver
->dumb_map_offset
)
5469 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
5473 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5476 * @file_priv: DRM file info
5478 * This destroys the userspace handle for the given dumb backing storage buffer.
5479 * Since buffer objects must be reference counted in the kernel a buffer object
5480 * won't be immediately freed if a framebuffer modeset object still uses it.
5482 * Called by the user via ioctl.
5485 * Zero on success, negative errno on failure.
5487 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
5488 void *data
, struct drm_file
*file_priv
)
5490 struct drm_mode_destroy_dumb
*args
= data
;
5492 if (!dev
->driver
->dumb_destroy
)
5495 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
5499 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5500 * @format: pixel format (DRM_FORMAT_*)
5501 * @depth: storage for the depth value
5502 * @bpp: storage for the bpp value
5504 * This only supports RGB formats here for compat with code that doesn't use
5505 * pixel formats directly yet.
5507 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
5512 case DRM_FORMAT_RGB332
:
5513 case DRM_FORMAT_BGR233
:
5517 case DRM_FORMAT_XRGB1555
:
5518 case DRM_FORMAT_XBGR1555
:
5519 case DRM_FORMAT_RGBX5551
:
5520 case DRM_FORMAT_BGRX5551
:
5521 case DRM_FORMAT_ARGB1555
:
5522 case DRM_FORMAT_ABGR1555
:
5523 case DRM_FORMAT_RGBA5551
:
5524 case DRM_FORMAT_BGRA5551
:
5528 case DRM_FORMAT_RGB565
:
5529 case DRM_FORMAT_BGR565
:
5533 case DRM_FORMAT_RGB888
:
5534 case DRM_FORMAT_BGR888
:
5538 case DRM_FORMAT_XRGB8888
:
5539 case DRM_FORMAT_XBGR8888
:
5540 case DRM_FORMAT_RGBX8888
:
5541 case DRM_FORMAT_BGRX8888
:
5545 case DRM_FORMAT_XRGB2101010
:
5546 case DRM_FORMAT_XBGR2101010
:
5547 case DRM_FORMAT_RGBX1010102
:
5548 case DRM_FORMAT_BGRX1010102
:
5549 case DRM_FORMAT_ARGB2101010
:
5550 case DRM_FORMAT_ABGR2101010
:
5551 case DRM_FORMAT_RGBA1010102
:
5552 case DRM_FORMAT_BGRA1010102
:
5556 case DRM_FORMAT_ARGB8888
:
5557 case DRM_FORMAT_ABGR8888
:
5558 case DRM_FORMAT_RGBA8888
:
5559 case DRM_FORMAT_BGRA8888
:
5564 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5565 drm_get_format_name(format
));
5571 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
5574 * drm_format_num_planes - get the number of planes for format
5575 * @format: pixel format (DRM_FORMAT_*)
5578 * The number of planes used by the specified pixel format.
5580 int drm_format_num_planes(uint32_t format
)
5583 case DRM_FORMAT_YUV410
:
5584 case DRM_FORMAT_YVU410
:
5585 case DRM_FORMAT_YUV411
:
5586 case DRM_FORMAT_YVU411
:
5587 case DRM_FORMAT_YUV420
:
5588 case DRM_FORMAT_YVU420
:
5589 case DRM_FORMAT_YUV422
:
5590 case DRM_FORMAT_YVU422
:
5591 case DRM_FORMAT_YUV444
:
5592 case DRM_FORMAT_YVU444
:
5594 case DRM_FORMAT_NV12
:
5595 case DRM_FORMAT_NV21
:
5596 case DRM_FORMAT_NV16
:
5597 case DRM_FORMAT_NV61
:
5598 case DRM_FORMAT_NV24
:
5599 case DRM_FORMAT_NV42
:
5605 EXPORT_SYMBOL(drm_format_num_planes
);
5608 * drm_format_plane_cpp - determine the bytes per pixel value
5609 * @format: pixel format (DRM_FORMAT_*)
5610 * @plane: plane index
5613 * The bytes per pixel value for the specified plane.
5615 int drm_format_plane_cpp(uint32_t format
, int plane
)
5620 if (plane
>= drm_format_num_planes(format
))
5624 case DRM_FORMAT_YUYV
:
5625 case DRM_FORMAT_YVYU
:
5626 case DRM_FORMAT_UYVY
:
5627 case DRM_FORMAT_VYUY
:
5629 case DRM_FORMAT_NV12
:
5630 case DRM_FORMAT_NV21
:
5631 case DRM_FORMAT_NV16
:
5632 case DRM_FORMAT_NV61
:
5633 case DRM_FORMAT_NV24
:
5634 case DRM_FORMAT_NV42
:
5635 return plane
? 2 : 1;
5636 case DRM_FORMAT_YUV410
:
5637 case DRM_FORMAT_YVU410
:
5638 case DRM_FORMAT_YUV411
:
5639 case DRM_FORMAT_YVU411
:
5640 case DRM_FORMAT_YUV420
:
5641 case DRM_FORMAT_YVU420
:
5642 case DRM_FORMAT_YUV422
:
5643 case DRM_FORMAT_YVU422
:
5644 case DRM_FORMAT_YUV444
:
5645 case DRM_FORMAT_YVU444
:
5648 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
5652 EXPORT_SYMBOL(drm_format_plane_cpp
);
5655 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5656 * @format: pixel format (DRM_FORMAT_*)
5659 * The horizontal chroma subsampling factor for the
5660 * specified pixel format.
5662 int drm_format_horz_chroma_subsampling(uint32_t format
)
5665 case DRM_FORMAT_YUV411
:
5666 case DRM_FORMAT_YVU411
:
5667 case DRM_FORMAT_YUV410
:
5668 case DRM_FORMAT_YVU410
:
5670 case DRM_FORMAT_YUYV
:
5671 case DRM_FORMAT_YVYU
:
5672 case DRM_FORMAT_UYVY
:
5673 case DRM_FORMAT_VYUY
:
5674 case DRM_FORMAT_NV12
:
5675 case DRM_FORMAT_NV21
:
5676 case DRM_FORMAT_NV16
:
5677 case DRM_FORMAT_NV61
:
5678 case DRM_FORMAT_YUV422
:
5679 case DRM_FORMAT_YVU422
:
5680 case DRM_FORMAT_YUV420
:
5681 case DRM_FORMAT_YVU420
:
5687 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5690 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5691 * @format: pixel format (DRM_FORMAT_*)
5694 * The vertical chroma subsampling factor for the
5695 * specified pixel format.
5697 int drm_format_vert_chroma_subsampling(uint32_t format
)
5700 case DRM_FORMAT_YUV410
:
5701 case DRM_FORMAT_YVU410
:
5703 case DRM_FORMAT_YUV420
:
5704 case DRM_FORMAT_YVU420
:
5705 case DRM_FORMAT_NV12
:
5706 case DRM_FORMAT_NV21
:
5712 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5715 * drm_rotation_simplify() - Try to simplify the rotation
5716 * @rotation: Rotation to be simplified
5717 * @supported_rotations: Supported rotations
5719 * Attempt to simplify the rotation to a form that is supported.
5720 * Eg. if the hardware supports everything except DRM_REFLECT_X
5721 * one could call this function like this:
5723 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5724 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5725 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5727 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5728 * transforms the hardware supports, this function may not
5729 * be able to produce a supported transform, so the caller should
5730 * check the result afterwards.
5732 unsigned int drm_rotation_simplify(unsigned int rotation
,
5733 unsigned int supported_rotations
)
5735 if (rotation
& ~supported_rotations
) {
5736 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5737 rotation
= (rotation
& ~0xf) | BIT((ffs(rotation
& 0xf) + 1) % 4);
5742 EXPORT_SYMBOL(drm_rotation_simplify
);
5745 * drm_mode_config_init - initialize DRM mode_configuration structure
5748 * Initialize @dev's mode_config structure, used for tracking the graphics
5749 * configuration of @dev.
5751 * Since this initializes the modeset locks, no locking is possible. Which is no
5752 * problem, since this should happen single threaded at init time. It is the
5753 * driver's problem to ensure this guarantee.
5756 void drm_mode_config_init(struct drm_device
*dev
)
5758 mutex_init(&dev
->mode_config
.mutex
);
5759 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5760 mutex_init(&dev
->mode_config
.idr_mutex
);
5761 mutex_init(&dev
->mode_config
.fb_lock
);
5762 mutex_init(&dev
->mode_config
.blob_lock
);
5763 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5764 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5765 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5766 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5767 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5768 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5769 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5770 idr_init(&dev
->mode_config
.crtc_idr
);
5771 idr_init(&dev
->mode_config
.tile_idr
);
5773 drm_modeset_lock_all(dev
);
5774 drm_mode_create_standard_properties(dev
);
5775 drm_modeset_unlock_all(dev
);
5777 /* Just to be sure */
5778 dev
->mode_config
.num_fb
= 0;
5779 dev
->mode_config
.num_connector
= 0;
5780 dev
->mode_config
.num_crtc
= 0;
5781 dev
->mode_config
.num_encoder
= 0;
5782 dev
->mode_config
.num_overlay_plane
= 0;
5783 dev
->mode_config
.num_total_plane
= 0;
5785 EXPORT_SYMBOL(drm_mode_config_init
);
5788 * drm_mode_config_cleanup - free up DRM mode_config info
5791 * Free up all the connectors and CRTCs associated with this DRM device, then
5792 * free up the framebuffers and associated buffer objects.
5794 * Note that since this /should/ happen single-threaded at driver/device
5795 * teardown time, no locking is required. It's the driver's job to ensure that
5796 * this guarantee actually holds true.
5798 * FIXME: cleanup any dangling user buffer objects too
5800 void drm_mode_config_cleanup(struct drm_device
*dev
)
5802 struct drm_connector
*connector
, *ot
;
5803 struct drm_crtc
*crtc
, *ct
;
5804 struct drm_encoder
*encoder
, *enct
;
5805 struct drm_framebuffer
*fb
, *fbt
;
5806 struct drm_property
*property
, *pt
;
5807 struct drm_property_blob
*blob
, *bt
;
5808 struct drm_plane
*plane
, *plt
;
5810 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5812 encoder
->funcs
->destroy(encoder
);
5815 list_for_each_entry_safe(connector
, ot
,
5816 &dev
->mode_config
.connector_list
, head
) {
5817 connector
->funcs
->destroy(connector
);
5820 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5822 drm_property_destroy(dev
, property
);
5825 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5827 drm_property_unreference_blob(blob
);
5831 * Single-threaded teardown context, so it's not required to grab the
5832 * fb_lock to protect against concurrent fb_list access. Contrary, it
5833 * would actually deadlock with the drm_framebuffer_cleanup function.
5835 * Also, if there are any framebuffers left, that's a driver leak now,
5836 * so politely WARN about this.
5838 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5839 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5840 drm_framebuffer_remove(fb
);
5843 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5845 plane
->funcs
->destroy(plane
);
5848 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5849 crtc
->funcs
->destroy(crtc
);
5852 idr_destroy(&dev
->mode_config
.tile_idr
);
5853 idr_destroy(&dev
->mode_config
.crtc_idr
);
5854 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5856 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5858 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5859 unsigned int supported_rotations
)
5861 static const struct drm_prop_enum_list props
[] = {
5862 { DRM_ROTATE_0
, "rotate-0" },
5863 { DRM_ROTATE_90
, "rotate-90" },
5864 { DRM_ROTATE_180
, "rotate-180" },
5865 { DRM_ROTATE_270
, "rotate-270" },
5866 { DRM_REFLECT_X
, "reflect-x" },
5867 { DRM_REFLECT_Y
, "reflect-y" },
5870 return drm_property_create_bitmask(dev
, 0, "rotation",
5871 props
, ARRAY_SIZE(props
),
5872 supported_rotations
);
5874 EXPORT_SYMBOL(drm_mode_create_rotation_property
);
5879 * Tile groups are used to represent tiled monitors with a unique
5880 * integer identifier. Tiled monitors using DisplayID v1.3 have
5881 * a unique 8-byte handle, we store this in a tile group, so we
5882 * have a common identifier for all tiles in a monitor group.
5884 static void drm_tile_group_free(struct kref
*kref
)
5886 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
5887 struct drm_device
*dev
= tg
->dev
;
5888 mutex_lock(&dev
->mode_config
.idr_mutex
);
5889 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
5890 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5895 * drm_mode_put_tile_group - drop a reference to a tile group.
5897 * @tg: tile group to drop reference to.
5899 * drop reference to tile group and free if 0.
5901 void drm_mode_put_tile_group(struct drm_device
*dev
,
5902 struct drm_tile_group
*tg
)
5904 kref_put(&tg
->refcount
, drm_tile_group_free
);
5908 * drm_mode_get_tile_group - get a reference to an existing tile group
5910 * @topology: 8-bytes unique per monitor.
5912 * Use the unique bytes to get a reference to an existing tile group.
5915 * tile group or NULL if not found.
5917 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
5920 struct drm_tile_group
*tg
;
5922 mutex_lock(&dev
->mode_config
.idr_mutex
);
5923 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
5924 if (!memcmp(tg
->group_data
, topology
, 8)) {
5925 if (!kref_get_unless_zero(&tg
->refcount
))
5927 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5931 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5934 EXPORT_SYMBOL(drm_mode_get_tile_group
);
5937 * drm_mode_create_tile_group - create a tile group from a displayid description
5939 * @topology: 8-bytes unique per monitor.
5941 * Create a tile group for the unique monitor, and get a unique
5942 * identifier for the tile group.
5945 * new tile group or error.
5947 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
5950 struct drm_tile_group
*tg
;
5953 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
5955 return ERR_PTR(-ENOMEM
);
5957 kref_init(&tg
->refcount
);
5958 memcpy(tg
->group_data
, topology
, 8);
5961 mutex_lock(&dev
->mode_config
.idr_mutex
);
5962 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
5970 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5973 EXPORT_SYMBOL(drm_mode_create_tile_group
);