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
))
2710 * Universal plane src offsets are only 16.16, prevent havoc for
2711 * drivers using universal plane code internally.
2713 if (crtc_req
->x
& 0xffff0000 || crtc_req
->y
& 0xffff0000)
2716 drm_modeset_lock_all(dev
);
2717 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2719 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2723 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2725 if (crtc_req
->mode_valid
) {
2726 /* If we have a mode we need a framebuffer. */
2727 /* If we pass -1, set the mode with the currently bound fb */
2728 if (crtc_req
->fb_id
== -1) {
2729 if (!crtc
->primary
->fb
) {
2730 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2734 fb
= crtc
->primary
->fb
;
2735 /* Make refcounting symmetric with the lookup path. */
2736 drm_framebuffer_reference(fb
);
2738 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2740 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2747 mode
= drm_mode_create(dev
);
2753 ret
= drm_mode_convert_umode(mode
, &crtc_req
->mode
);
2755 DRM_DEBUG_KMS("Invalid mode\n");
2759 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2762 * Check whether the primary plane supports the fb pixel format.
2763 * Drivers not implementing the universal planes API use a
2764 * default formats list provided by the DRM core which doesn't
2765 * match real hardware capabilities. Skip the check in that
2768 if (!crtc
->primary
->format_default
) {
2769 ret
= drm_plane_check_pixel_format(crtc
->primary
,
2772 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2773 drm_get_format_name(fb
->pixel_format
));
2778 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2785 if (crtc_req
->count_connectors
== 0 && mode
) {
2786 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2791 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2792 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2793 crtc_req
->count_connectors
);
2798 if (crtc_req
->count_connectors
> 0) {
2801 /* Avoid unbounded kernel memory allocation */
2802 if (crtc_req
->count_connectors
> config
->num_connector
) {
2807 connector_set
= kmalloc_array(crtc_req
->count_connectors
,
2808 sizeof(struct drm_connector
*),
2810 if (!connector_set
) {
2815 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2816 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2817 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2822 connector
= drm_connector_find(dev
, out_id
);
2824 DRM_DEBUG_KMS("Connector id %d unknown\n",
2829 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2833 connector_set
[i
] = connector
;
2838 set
.x
= crtc_req
->x
;
2839 set
.y
= crtc_req
->y
;
2841 set
.connectors
= connector_set
;
2842 set
.num_connectors
= crtc_req
->count_connectors
;
2844 ret
= drm_mode_set_config_internal(&set
);
2848 drm_framebuffer_unreference(fb
);
2850 kfree(connector_set
);
2851 drm_mode_destroy(dev
, mode
);
2852 drm_modeset_unlock_all(dev
);
2857 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2858 * universal plane handler call
2859 * @crtc: crtc to update cursor for
2860 * @req: data pointer for the ioctl
2861 * @file_priv: drm file for the ioctl call
2863 * Legacy cursor ioctl's work directly with driver buffer handles. To
2864 * translate legacy ioctl calls into universal plane handler calls, we need to
2865 * wrap the native buffer handle in a drm_framebuffer.
2867 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2868 * buffer with a pitch of 4*width; the universal plane interface should be used
2869 * directly in cases where the hardware can support other buffer settings and
2870 * userspace wants to make use of these capabilities.
2873 * Zero on success, negative errno on failure.
2875 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2876 struct drm_mode_cursor2
*req
,
2877 struct drm_file
*file_priv
)
2879 struct drm_device
*dev
= crtc
->dev
;
2880 struct drm_framebuffer
*fb
= NULL
;
2881 struct drm_mode_fb_cmd2 fbreq
= {
2882 .width
= req
->width
,
2883 .height
= req
->height
,
2884 .pixel_format
= DRM_FORMAT_ARGB8888
,
2885 .pitches
= { req
->width
* 4 },
2886 .handles
= { req
->handle
},
2888 int32_t crtc_x
, crtc_y
;
2889 uint32_t crtc_w
= 0, crtc_h
= 0;
2890 uint32_t src_w
= 0, src_h
= 0;
2893 BUG_ON(!crtc
->cursor
);
2894 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2897 * Obtain fb we'll be using (either new or existing) and take an extra
2898 * reference to it if fb != null. setplane will take care of dropping
2899 * the reference if the plane update fails.
2901 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2903 fb
= internal_framebuffer_create(dev
, &fbreq
, file_priv
);
2905 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2912 fb
= crtc
->cursor
->fb
;
2914 drm_framebuffer_reference(fb
);
2917 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2921 crtc_x
= crtc
->cursor_x
;
2922 crtc_y
= crtc
->cursor_y
;
2927 crtc_h
= fb
->height
;
2928 src_w
= fb
->width
<< 16;
2929 src_h
= fb
->height
<< 16;
2933 * setplane_internal will take care of deref'ing either the old or new
2934 * framebuffer depending on success.
2936 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2937 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2938 0, 0, src_w
, src_h
);
2940 /* Update successful; save new cursor position, if necessary */
2941 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2942 crtc
->cursor_x
= req
->x
;
2943 crtc
->cursor_y
= req
->y
;
2949 static int drm_mode_cursor_common(struct drm_device
*dev
,
2950 struct drm_mode_cursor2
*req
,
2951 struct drm_file
*file_priv
)
2953 struct drm_crtc
*crtc
;
2956 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2959 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2962 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2964 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2969 * If this crtc has a universal cursor plane, call that plane's update
2970 * handler rather than using legacy cursor handlers.
2972 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
2974 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2978 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2979 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2983 /* Turns off the cursor if handle is 0 */
2984 if (crtc
->funcs
->cursor_set2
)
2985 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2986 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2988 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2989 req
->width
, req
->height
);
2992 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2993 if (crtc
->funcs
->cursor_move
) {
2994 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
3001 drm_modeset_unlock_crtc(crtc
);
3009 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3010 * @dev: drm device for the ioctl
3011 * @data: data pointer for the ioctl
3012 * @file_priv: drm file for the ioctl call
3014 * Set the cursor configuration based on user request.
3016 * Called by the user via ioctl.
3019 * Zero on success, negative errno on failure.
3021 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
3022 void *data
, struct drm_file
*file_priv
)
3024 struct drm_mode_cursor
*req
= data
;
3025 struct drm_mode_cursor2 new_req
;
3027 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
3028 new_req
.hot_x
= new_req
.hot_y
= 0;
3030 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
3034 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3035 * @dev: drm device for the ioctl
3036 * @data: data pointer for the ioctl
3037 * @file_priv: drm file for the ioctl call
3039 * Set the cursor configuration based on user request. This implements the 2nd
3040 * version of the cursor ioctl, which allows userspace to additionally specify
3041 * the hotspot of the pointer.
3043 * Called by the user via ioctl.
3046 * Zero on success, negative errno on failure.
3048 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
3049 void *data
, struct drm_file
*file_priv
)
3051 struct drm_mode_cursor2
*req
= data
;
3053 return drm_mode_cursor_common(dev
, req
, file_priv
);
3057 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3058 * @bpp: bits per pixels
3059 * @depth: bit depth per pixel
3061 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3062 * Useful in fbdev emulation code, since that deals in those values.
3064 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
3070 fmt
= DRM_FORMAT_C8
;
3074 fmt
= DRM_FORMAT_XRGB1555
;
3076 fmt
= DRM_FORMAT_RGB565
;
3079 fmt
= DRM_FORMAT_RGB888
;
3083 fmt
= DRM_FORMAT_XRGB8888
;
3084 else if (depth
== 30)
3085 fmt
= DRM_FORMAT_XRGB2101010
;
3087 fmt
= DRM_FORMAT_ARGB8888
;
3090 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3091 fmt
= DRM_FORMAT_XRGB8888
;
3097 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
3100 * drm_mode_addfb - add an FB to the graphics configuration
3101 * @dev: drm device for the ioctl
3102 * @data: data pointer for the ioctl
3103 * @file_priv: drm file for the ioctl call
3105 * Add a new FB to the specified CRTC, given a user request. This is the
3106 * original addfb ioctl which only supported RGB formats.
3108 * Called by the user via ioctl.
3111 * Zero on success, negative errno on failure.
3113 int drm_mode_addfb(struct drm_device
*dev
,
3114 void *data
, struct drm_file
*file_priv
)
3116 struct drm_mode_fb_cmd
*or = data
;
3117 struct drm_mode_fb_cmd2 r
= {};
3120 /* convert to new format and call new ioctl */
3121 r
.fb_id
= or->fb_id
;
3122 r
.width
= or->width
;
3123 r
.height
= or->height
;
3124 r
.pitches
[0] = or->pitch
;
3125 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
3126 r
.handles
[0] = or->handle
;
3128 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
3132 or->fb_id
= r
.fb_id
;
3137 static int format_check(const struct drm_mode_fb_cmd2
*r
)
3139 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3143 case DRM_FORMAT_RGB332
:
3144 case DRM_FORMAT_BGR233
:
3145 case DRM_FORMAT_XRGB4444
:
3146 case DRM_FORMAT_XBGR4444
:
3147 case DRM_FORMAT_RGBX4444
:
3148 case DRM_FORMAT_BGRX4444
:
3149 case DRM_FORMAT_ARGB4444
:
3150 case DRM_FORMAT_ABGR4444
:
3151 case DRM_FORMAT_RGBA4444
:
3152 case DRM_FORMAT_BGRA4444
:
3153 case DRM_FORMAT_XRGB1555
:
3154 case DRM_FORMAT_XBGR1555
:
3155 case DRM_FORMAT_RGBX5551
:
3156 case DRM_FORMAT_BGRX5551
:
3157 case DRM_FORMAT_ARGB1555
:
3158 case DRM_FORMAT_ABGR1555
:
3159 case DRM_FORMAT_RGBA5551
:
3160 case DRM_FORMAT_BGRA5551
:
3161 case DRM_FORMAT_RGB565
:
3162 case DRM_FORMAT_BGR565
:
3163 case DRM_FORMAT_RGB888
:
3164 case DRM_FORMAT_BGR888
:
3165 case DRM_FORMAT_XRGB8888
:
3166 case DRM_FORMAT_XBGR8888
:
3167 case DRM_FORMAT_RGBX8888
:
3168 case DRM_FORMAT_BGRX8888
:
3169 case DRM_FORMAT_ARGB8888
:
3170 case DRM_FORMAT_ABGR8888
:
3171 case DRM_FORMAT_RGBA8888
:
3172 case DRM_FORMAT_BGRA8888
:
3173 case DRM_FORMAT_XRGB2101010
:
3174 case DRM_FORMAT_XBGR2101010
:
3175 case DRM_FORMAT_RGBX1010102
:
3176 case DRM_FORMAT_BGRX1010102
:
3177 case DRM_FORMAT_ARGB2101010
:
3178 case DRM_FORMAT_ABGR2101010
:
3179 case DRM_FORMAT_RGBA1010102
:
3180 case DRM_FORMAT_BGRA1010102
:
3181 case DRM_FORMAT_YUYV
:
3182 case DRM_FORMAT_YVYU
:
3183 case DRM_FORMAT_UYVY
:
3184 case DRM_FORMAT_VYUY
:
3185 case DRM_FORMAT_AYUV
:
3186 case DRM_FORMAT_NV12
:
3187 case DRM_FORMAT_NV21
:
3188 case DRM_FORMAT_NV16
:
3189 case DRM_FORMAT_NV61
:
3190 case DRM_FORMAT_NV24
:
3191 case DRM_FORMAT_NV42
:
3192 case DRM_FORMAT_YUV410
:
3193 case DRM_FORMAT_YVU410
:
3194 case DRM_FORMAT_YUV411
:
3195 case DRM_FORMAT_YVU411
:
3196 case DRM_FORMAT_YUV420
:
3197 case DRM_FORMAT_YVU420
:
3198 case DRM_FORMAT_YUV422
:
3199 case DRM_FORMAT_YVU422
:
3200 case DRM_FORMAT_YUV444
:
3201 case DRM_FORMAT_YVU444
:
3204 DRM_DEBUG_KMS("invalid pixel format %s\n",
3205 drm_get_format_name(r
->pixel_format
));
3210 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3212 int ret
, hsub
, vsub
, num_planes
, i
;
3214 ret
= format_check(r
);
3216 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3217 drm_get_format_name(r
->pixel_format
));
3221 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3222 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3223 num_planes
= drm_format_num_planes(r
->pixel_format
);
3225 if (r
->width
== 0 || r
->width
% hsub
) {
3226 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3230 if (r
->height
== 0 || r
->height
% vsub
) {
3231 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3235 for (i
= 0; i
< num_planes
; i
++) {
3236 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3237 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3238 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3240 if (!r
->handles
[i
]) {
3241 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3245 if ((uint64_t) width
* cpp
> UINT_MAX
)
3248 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3251 if (r
->pitches
[i
] < width
* cpp
) {
3252 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3256 if (r
->modifier
[i
] && !(r
->flags
& DRM_MODE_FB_MODIFIERS
)) {
3257 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3262 /* modifier specific checks: */
3263 switch (r
->modifier
[i
]) {
3264 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE
:
3265 /* NOTE: the pitch restriction may be lifted later if it turns
3266 * out that no hw has this restriction:
3268 if (r
->pixel_format
!= DRM_FORMAT_NV12
||
3269 width
% 128 || height
% 32 ||
3270 r
->pitches
[i
] % 128) {
3271 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i
);
3281 for (i
= num_planes
; i
< 4; i
++) {
3282 if (r
->modifier
[i
]) {
3283 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i
);
3287 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3288 if (!(r
->flags
& DRM_MODE_FB_MODIFIERS
))
3291 if (r
->handles
[i
]) {
3292 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i
);
3296 if (r
->pitches
[i
]) {
3297 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i
);
3301 if (r
->offsets
[i
]) {
3302 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i
);
3310 static struct drm_framebuffer
*
3311 internal_framebuffer_create(struct drm_device
*dev
,
3312 struct drm_mode_fb_cmd2
*r
,
3313 struct drm_file
*file_priv
)
3315 struct drm_mode_config
*config
= &dev
->mode_config
;
3316 struct drm_framebuffer
*fb
;
3319 if (r
->flags
& ~(DRM_MODE_FB_INTERLACED
| DRM_MODE_FB_MODIFIERS
)) {
3320 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3321 return ERR_PTR(-EINVAL
);
3324 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3325 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3326 r
->width
, config
->min_width
, config
->max_width
);
3327 return ERR_PTR(-EINVAL
);
3329 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3330 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3331 r
->height
, config
->min_height
, config
->max_height
);
3332 return ERR_PTR(-EINVAL
);
3335 if (r
->flags
& DRM_MODE_FB_MODIFIERS
&&
3336 !dev
->mode_config
.allow_fb_modifiers
) {
3337 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3338 return ERR_PTR(-EINVAL
);
3341 ret
= framebuffer_check(r
);
3343 return ERR_PTR(ret
);
3345 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3347 DRM_DEBUG_KMS("could not create framebuffer\n");
3355 * drm_mode_addfb2 - add an FB to the graphics configuration
3356 * @dev: drm device for the ioctl
3357 * @data: data pointer for the ioctl
3358 * @file_priv: drm file for the ioctl call
3360 * Add a new FB to the specified CRTC, given a user request with format. This is
3361 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3362 * and uses fourcc codes as pixel format specifiers.
3364 * Called by the user via ioctl.
3367 * Zero on success, negative errno on failure.
3369 int drm_mode_addfb2(struct drm_device
*dev
,
3370 void *data
, struct drm_file
*file_priv
)
3372 struct drm_mode_fb_cmd2
*r
= data
;
3373 struct drm_framebuffer
*fb
;
3375 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3378 fb
= internal_framebuffer_create(dev
, r
, file_priv
);
3382 /* Transfer ownership to the filp for reaping on close */
3384 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3385 mutex_lock(&file_priv
->fbs_lock
);
3386 r
->fb_id
= fb
->base
.id
;
3387 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3388 mutex_unlock(&file_priv
->fbs_lock
);
3394 * drm_mode_rmfb - remove an FB from the configuration
3395 * @dev: drm device for the ioctl
3396 * @data: data pointer for the ioctl
3397 * @file_priv: drm file for the ioctl call
3399 * Remove the FB specified by the user.
3401 * Called by the user via ioctl.
3404 * Zero on success, negative errno on failure.
3406 int drm_mode_rmfb(struct drm_device
*dev
,
3407 void *data
, struct drm_file
*file_priv
)
3409 struct drm_framebuffer
*fb
= NULL
;
3410 struct drm_framebuffer
*fbl
= NULL
;
3411 uint32_t *id
= data
;
3414 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3417 mutex_lock(&file_priv
->fbs_lock
);
3418 mutex_lock(&dev
->mode_config
.fb_lock
);
3419 fb
= __drm_framebuffer_lookup(dev
, *id
);
3423 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3429 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3430 __drm_framebuffer_unregister(dev
, fb
);
3432 list_del_init(&fb
->filp_head
);
3433 mutex_unlock(&dev
->mode_config
.fb_lock
);
3434 mutex_unlock(&file_priv
->fbs_lock
);
3436 drm_framebuffer_remove(fb
);
3441 mutex_unlock(&dev
->mode_config
.fb_lock
);
3442 mutex_unlock(&file_priv
->fbs_lock
);
3448 * drm_mode_getfb - get FB info
3449 * @dev: drm device for the ioctl
3450 * @data: data pointer for the ioctl
3451 * @file_priv: drm file for the ioctl call
3453 * Lookup the FB given its ID and return info about it.
3455 * Called by the user via ioctl.
3458 * Zero on success, negative errno on failure.
3460 int drm_mode_getfb(struct drm_device
*dev
,
3461 void *data
, struct drm_file
*file_priv
)
3463 struct drm_mode_fb_cmd
*r
= data
;
3464 struct drm_framebuffer
*fb
;
3467 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3470 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3474 r
->height
= fb
->height
;
3475 r
->width
= fb
->width
;
3476 r
->depth
= fb
->depth
;
3477 r
->bpp
= fb
->bits_per_pixel
;
3478 r
->pitch
= fb
->pitches
[0];
3479 if (fb
->funcs
->create_handle
) {
3480 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3481 drm_is_control_client(file_priv
)) {
3482 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3485 /* GET_FB() is an unprivileged ioctl so we must not
3486 * return a buffer-handle to non-master processes! For
3487 * backwards-compatibility reasons, we cannot make
3488 * GET_FB() privileged, so just return an invalid handle
3489 * for non-masters. */
3497 drm_framebuffer_unreference(fb
);
3503 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3504 * @dev: drm device for the ioctl
3505 * @data: data pointer for the ioctl
3506 * @file_priv: drm file for the ioctl call
3508 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3509 * rectangle list. Generic userspace which does frontbuffer rendering must call
3510 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3511 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3513 * Modesetting drivers which always update the frontbuffer do not need to
3514 * implement the corresponding ->dirty framebuffer callback.
3516 * Called by the user via ioctl.
3519 * Zero on success, negative errno on failure.
3521 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3522 void *data
, struct drm_file
*file_priv
)
3524 struct drm_clip_rect __user
*clips_ptr
;
3525 struct drm_clip_rect
*clips
= NULL
;
3526 struct drm_mode_fb_dirty_cmd
*r
= data
;
3527 struct drm_framebuffer
*fb
;
3532 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3535 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3539 num_clips
= r
->num_clips
;
3540 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3542 if (!num_clips
!= !clips_ptr
) {
3547 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3549 /* If userspace annotates copy, clips must come in pairs */
3550 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3555 if (num_clips
&& clips_ptr
) {
3556 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3560 clips
= kcalloc(num_clips
, sizeof(*clips
), GFP_KERNEL
);
3566 ret
= copy_from_user(clips
, clips_ptr
,
3567 num_clips
* sizeof(*clips
));
3574 if (fb
->funcs
->dirty
) {
3575 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3584 drm_framebuffer_unreference(fb
);
3591 * drm_fb_release - remove and free the FBs on this file
3592 * @priv: drm file for the ioctl
3594 * Destroy all the FBs associated with @filp.
3596 * Called by the user via ioctl.
3599 * Zero on success, negative errno on failure.
3601 void drm_fb_release(struct drm_file
*priv
)
3603 struct drm_device
*dev
= priv
->minor
->dev
;
3604 struct drm_framebuffer
*fb
, *tfb
;
3607 * When the file gets released that means no one else can access the fb
3608 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3609 * avoid upsetting lockdep since the universal cursor code adds a
3610 * framebuffer while holding mutex locks.
3612 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3613 * locks is impossible here since no one else but this function can get
3616 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3618 mutex_lock(&dev
->mode_config
.fb_lock
);
3619 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3620 __drm_framebuffer_unregister(dev
, fb
);
3621 mutex_unlock(&dev
->mode_config
.fb_lock
);
3623 list_del_init(&fb
->filp_head
);
3625 /* This will also drop the fpriv->fbs reference. */
3626 drm_framebuffer_remove(fb
);
3631 * drm_property_create - create a new property type
3633 * @flags: flags specifying the property type
3634 * @name: name of the property
3635 * @num_values: number of pre-defined values
3637 * This creates a new generic drm property which can then be attached to a drm
3638 * object with drm_object_attach_property. The returned property object must be
3639 * freed with drm_property_destroy.
3641 * Note that the DRM core keeps a per-device list of properties and that, if
3642 * drm_mode_config_cleanup() is called, it will destroy all properties created
3646 * A pointer to the newly created property on success, NULL on failure.
3648 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3649 const char *name
, int num_values
)
3651 struct drm_property
*property
= NULL
;
3654 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3658 property
->dev
= dev
;
3661 property
->values
= kcalloc(num_values
, sizeof(uint64_t),
3663 if (!property
->values
)
3667 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3671 property
->flags
= flags
;
3672 property
->num_values
= num_values
;
3673 INIT_LIST_HEAD(&property
->enum_list
);
3676 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3677 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3680 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3682 WARN_ON(!drm_property_type_valid(property
));
3686 kfree(property
->values
);
3690 EXPORT_SYMBOL(drm_property_create
);
3693 * drm_property_create_enum - create a new enumeration property type
3695 * @flags: flags specifying the property type
3696 * @name: name of the property
3697 * @props: enumeration lists with property values
3698 * @num_values: number of pre-defined values
3700 * This creates a new generic drm property which can then be attached to a drm
3701 * object with drm_object_attach_property. The returned property object must be
3702 * freed with drm_property_destroy.
3704 * Userspace is only allowed to set one of the predefined values for enumeration
3708 * A pointer to the newly created property on success, NULL on failure.
3710 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3712 const struct drm_prop_enum_list
*props
,
3715 struct drm_property
*property
;
3718 flags
|= DRM_MODE_PROP_ENUM
;
3720 property
= drm_property_create(dev
, flags
, name
, num_values
);
3724 for (i
= 0; i
< num_values
; i
++) {
3725 ret
= drm_property_add_enum(property
, i
,
3729 drm_property_destroy(dev
, property
);
3736 EXPORT_SYMBOL(drm_property_create_enum
);
3739 * drm_property_create_bitmask - create a new bitmask property type
3741 * @flags: flags specifying the property type
3742 * @name: name of the property
3743 * @props: enumeration lists with property bitflags
3744 * @num_props: size of the @props array
3745 * @supported_bits: bitmask of all supported enumeration values
3747 * This creates a new bitmask drm property which can then be attached to a drm
3748 * object with drm_object_attach_property. The returned property object must be
3749 * freed with drm_property_destroy.
3751 * Compared to plain enumeration properties userspace is allowed to set any
3752 * or'ed together combination of the predefined property bitflag values
3755 * A pointer to the newly created property on success, NULL on failure.
3757 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3758 int flags
, const char *name
,
3759 const struct drm_prop_enum_list
*props
,
3761 uint64_t supported_bits
)
3763 struct drm_property
*property
;
3764 int i
, ret
, index
= 0;
3765 int num_values
= hweight64(supported_bits
);
3767 flags
|= DRM_MODE_PROP_BITMASK
;
3769 property
= drm_property_create(dev
, flags
, name
, num_values
);
3772 for (i
= 0; i
< num_props
; i
++) {
3773 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3776 if (WARN_ON(index
>= num_values
)) {
3777 drm_property_destroy(dev
, property
);
3781 ret
= drm_property_add_enum(property
, index
++,
3785 drm_property_destroy(dev
, property
);
3792 EXPORT_SYMBOL(drm_property_create_bitmask
);
3794 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3795 int flags
, const char *name
,
3796 uint64_t min
, uint64_t max
)
3798 struct drm_property
*property
;
3800 property
= drm_property_create(dev
, flags
, name
, 2);
3804 property
->values
[0] = min
;
3805 property
->values
[1] = max
;
3811 * drm_property_create_range - create a new unsigned ranged property type
3813 * @flags: flags specifying the property type
3814 * @name: name of the property
3815 * @min: minimum value of the property
3816 * @max: maximum value of the property
3818 * This creates a new generic drm property which can then be attached to a drm
3819 * object with drm_object_attach_property. The returned property object must be
3820 * freed with drm_property_destroy.
3822 * Userspace is allowed to set any unsigned integer value in the (min, max)
3826 * A pointer to the newly created property on success, NULL on failure.
3828 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3830 uint64_t min
, uint64_t max
)
3832 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3835 EXPORT_SYMBOL(drm_property_create_range
);
3838 * drm_property_create_signed_range - create a new signed ranged property type
3840 * @flags: flags specifying the property type
3841 * @name: name of the property
3842 * @min: minimum value of the property
3843 * @max: maximum value of the property
3845 * This creates a new generic drm property which can then be attached to a drm
3846 * object with drm_object_attach_property. The returned property object must be
3847 * freed with drm_property_destroy.
3849 * Userspace is allowed to set any signed integer value in the (min, max)
3853 * A pointer to the newly created property on success, NULL on failure.
3855 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3856 int flags
, const char *name
,
3857 int64_t min
, int64_t max
)
3859 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3860 name
, I642U64(min
), I642U64(max
));
3862 EXPORT_SYMBOL(drm_property_create_signed_range
);
3865 * drm_property_create_object - create a new object property type
3867 * @flags: flags specifying the property type
3868 * @name: name of the property
3869 * @type: object type from DRM_MODE_OBJECT_* defines
3871 * This creates a new generic drm property which can then be attached to a drm
3872 * object with drm_object_attach_property. The returned property object must be
3873 * freed with drm_property_destroy.
3875 * Userspace is only allowed to set this to any property value of the given
3876 * @type. Only useful for atomic properties, which is enforced.
3879 * A pointer to the newly created property on success, NULL on failure.
3881 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3882 int flags
, const char *name
, uint32_t type
)
3884 struct drm_property
*property
;
3886 flags
|= DRM_MODE_PROP_OBJECT
;
3888 if (WARN_ON(!(flags
& DRM_MODE_PROP_ATOMIC
)))
3891 property
= drm_property_create(dev
, flags
, name
, 1);
3895 property
->values
[0] = type
;
3899 EXPORT_SYMBOL(drm_property_create_object
);
3902 * drm_property_create_bool - create a new boolean property type
3904 * @flags: flags specifying the property type
3905 * @name: name of the property
3907 * This creates a new generic drm property which can then be attached to a drm
3908 * object with drm_object_attach_property. The returned property object must be
3909 * freed with drm_property_destroy.
3911 * This is implemented as a ranged property with only {0, 1} as valid values.
3914 * A pointer to the newly created property on success, NULL on failure.
3916 struct drm_property
*drm_property_create_bool(struct drm_device
*dev
, int flags
,
3919 return drm_property_create_range(dev
, flags
, name
, 0, 1);
3921 EXPORT_SYMBOL(drm_property_create_bool
);
3924 * drm_property_add_enum - add a possible value to an enumeration property
3925 * @property: enumeration property to change
3926 * @index: index of the new enumeration
3927 * @value: value of the new enumeration
3928 * @name: symbolic name of the new enumeration
3930 * This functions adds enumerations to a property.
3932 * It's use is deprecated, drivers should use one of the more specific helpers
3933 * to directly create the property with all enumerations already attached.
3936 * Zero on success, error code on failure.
3938 int drm_property_add_enum(struct drm_property
*property
, int index
,
3939 uint64_t value
, const char *name
)
3941 struct drm_property_enum
*prop_enum
;
3943 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3944 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3948 * Bitmask enum properties have the additional constraint of values
3951 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3955 if (!list_empty(&property
->enum_list
)) {
3956 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3957 if (prop_enum
->value
== value
) {
3958 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3959 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3965 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3969 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3970 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3971 prop_enum
->value
= value
;
3973 property
->values
[index
] = value
;
3974 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
3977 EXPORT_SYMBOL(drm_property_add_enum
);
3980 * drm_property_destroy - destroy a drm property
3982 * @property: property to destry
3984 * This function frees a property including any attached resources like
3985 * enumeration values.
3987 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3989 struct drm_property_enum
*prop_enum
, *pt
;
3991 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
3992 list_del(&prop_enum
->head
);
3996 if (property
->num_values
)
3997 kfree(property
->values
);
3998 drm_mode_object_put(dev
, &property
->base
);
3999 list_del(&property
->head
);
4002 EXPORT_SYMBOL(drm_property_destroy
);
4005 * drm_object_attach_property - attach a property to a modeset object
4006 * @obj: drm modeset object
4007 * @property: property to attach
4008 * @init_val: initial value of the property
4010 * This attaches the given property to the modeset object with the given initial
4011 * value. Currently this function cannot fail since the properties are stored in
4012 * a statically sized array.
4014 void drm_object_attach_property(struct drm_mode_object
*obj
,
4015 struct drm_property
*property
,
4018 int count
= obj
->properties
->count
;
4020 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
4021 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4022 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4023 "you see this message on the same object type.\n",
4028 obj
->properties
->properties
[count
] = property
;
4029 obj
->properties
->values
[count
] = init_val
;
4030 obj
->properties
->count
++;
4031 if (property
->flags
& DRM_MODE_PROP_ATOMIC
)
4032 obj
->properties
->atomic_count
++;
4034 EXPORT_SYMBOL(drm_object_attach_property
);
4037 * drm_object_property_set_value - set the value of a property
4038 * @obj: drm mode object to set property value for
4039 * @property: property to set
4040 * @val: value the property should be set to
4042 * This functions sets a given property on a given object. This function only
4043 * changes the software state of the property, it does not call into the
4044 * driver's ->set_property callback.
4047 * Zero on success, error code on failure.
4049 int drm_object_property_set_value(struct drm_mode_object
*obj
,
4050 struct drm_property
*property
, uint64_t val
)
4054 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4055 if (obj
->properties
->properties
[i
] == property
) {
4056 obj
->properties
->values
[i
] = val
;
4063 EXPORT_SYMBOL(drm_object_property_set_value
);
4066 * drm_object_property_get_value - retrieve the value of a property
4067 * @obj: drm mode object to get property value from
4068 * @property: property to retrieve
4069 * @val: storage for the property value
4071 * This function retrieves the softare state of the given property for the given
4072 * property. Since there is no driver callback to retrieve the current property
4073 * value this might be out of sync with the hardware, depending upon the driver
4077 * Zero on success, error code on failure.
4079 int drm_object_property_get_value(struct drm_mode_object
*obj
,
4080 struct drm_property
*property
, uint64_t *val
)
4084 /* read-only properties bypass atomic mechanism and still store
4085 * their value in obj->properties->values[].. mostly to avoid
4086 * having to deal w/ EDID and similar props in atomic paths:
4088 if (drm_core_check_feature(property
->dev
, DRIVER_ATOMIC
) &&
4089 !(property
->flags
& DRM_MODE_PROP_IMMUTABLE
))
4090 return drm_atomic_get_property(obj
, property
, val
);
4092 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4093 if (obj
->properties
->properties
[i
] == property
) {
4094 *val
= obj
->properties
->values
[i
];
4101 EXPORT_SYMBOL(drm_object_property_get_value
);
4104 * drm_mode_getproperty_ioctl - get the property metadata
4107 * @file_priv: DRM file info
4109 * This function retrieves the metadata for a given property, like the different
4110 * possible values for an enum property or the limits for a range property.
4112 * Blob properties are special
4114 * Called by the user via ioctl.
4117 * Zero on success, negative errno on failure.
4119 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
4120 void *data
, struct drm_file
*file_priv
)
4122 struct drm_mode_get_property
*out_resp
= data
;
4123 struct drm_property
*property
;
4125 int value_count
= 0;
4128 struct drm_property_enum
*prop_enum
;
4129 struct drm_mode_property_enum __user
*enum_ptr
;
4130 uint64_t __user
*values_ptr
;
4132 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4135 drm_modeset_lock_all(dev
);
4136 property
= drm_property_find(dev
, out_resp
->prop_id
);
4142 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4143 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4144 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
4148 value_count
= property
->num_values
;
4150 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
4151 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
4152 out_resp
->flags
= property
->flags
;
4154 if ((out_resp
->count_values
>= value_count
) && value_count
) {
4155 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
4156 for (i
= 0; i
< value_count
; i
++) {
4157 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
4163 out_resp
->count_values
= value_count
;
4165 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4166 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4167 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
4169 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
4170 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
4172 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
4177 if (copy_to_user(&enum_ptr
[copied
].name
,
4178 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
4185 out_resp
->count_enum_blobs
= enum_count
;
4189 * NOTE: The idea seems to have been to use this to read all the blob
4190 * property values. But nothing ever added them to the corresponding
4191 * list, userspace always used the special-purpose get_blob ioctl to
4192 * read the value for a blob property. It also doesn't make a lot of
4193 * sense to return values here when everything else is just metadata for
4194 * the property itself.
4196 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4197 out_resp
->count_enum_blobs
= 0;
4199 drm_modeset_unlock_all(dev
);
4204 * drm_property_create_blob - Create new blob property
4206 * Creates a new blob property for a specified DRM device, optionally
4209 * @dev: DRM device to create property for
4210 * @length: Length to allocate for blob data
4211 * @data: If specified, copies data into blob
4214 * New blob property with a single reference on success, or an ERR_PTR
4217 struct drm_property_blob
*
4218 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
4221 struct drm_property_blob
*blob
;
4225 return ERR_PTR(-EINVAL
);
4227 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
4229 return ERR_PTR(-ENOMEM
);
4231 /* This must be explicitly initialised, so we can safely call list_del
4232 * on it in the removal handler, even if it isn't in a file list. */
4233 INIT_LIST_HEAD(&blob
->head_file
);
4234 blob
->length
= length
;
4238 memcpy(blob
->data
, data
, length
);
4240 mutex_lock(&dev
->mode_config
.blob_lock
);
4242 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
4245 mutex_unlock(&dev
->mode_config
.blob_lock
);
4246 return ERR_PTR(-EINVAL
);
4249 kref_init(&blob
->refcount
);
4251 list_add_tail(&blob
->head_global
,
4252 &dev
->mode_config
.property_blob_list
);
4254 mutex_unlock(&dev
->mode_config
.blob_lock
);
4258 EXPORT_SYMBOL(drm_property_create_blob
);
4261 * drm_property_free_blob - Blob property destructor
4263 * Internal free function for blob properties; must not be used directly.
4267 static void drm_property_free_blob(struct kref
*kref
)
4269 struct drm_property_blob
*blob
=
4270 container_of(kref
, struct drm_property_blob
, refcount
);
4272 WARN_ON(!mutex_is_locked(&blob
->dev
->mode_config
.blob_lock
));
4274 list_del(&blob
->head_global
);
4275 list_del(&blob
->head_file
);
4276 drm_mode_object_put(blob
->dev
, &blob
->base
);
4282 * drm_property_unreference_blob - Unreference a blob property
4284 * Drop a reference on a blob property. May free the object.
4286 * @blob: Pointer to blob property
4288 void drm_property_unreference_blob(struct drm_property_blob
*blob
)
4290 struct drm_device
*dev
;
4297 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4299 if (kref_put_mutex(&blob
->refcount
, drm_property_free_blob
,
4300 &dev
->mode_config
.blob_lock
))
4301 mutex_unlock(&dev
->mode_config
.blob_lock
);
4303 might_lock(&dev
->mode_config
.blob_lock
);
4306 EXPORT_SYMBOL(drm_property_unreference_blob
);
4309 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4311 * Drop a reference on a blob property. May free the object. This must be
4312 * called with blob_lock held.
4314 * @blob: Pointer to blob property
4316 static void drm_property_unreference_blob_locked(struct drm_property_blob
*blob
)
4321 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4323 kref_put(&blob
->refcount
, drm_property_free_blob
);
4327 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4329 * @file_priv: destroy all blobs owned by this file handle
4331 void drm_property_destroy_user_blobs(struct drm_device
*dev
,
4332 struct drm_file
*file_priv
)
4334 struct drm_property_blob
*blob
, *bt
;
4336 mutex_lock(&dev
->mode_config
.blob_lock
);
4338 list_for_each_entry_safe(blob
, bt
, &file_priv
->blobs
, head_file
) {
4339 list_del_init(&blob
->head_file
);
4340 drm_property_unreference_blob_locked(blob
);
4343 mutex_unlock(&dev
->mode_config
.blob_lock
);
4347 * drm_property_reference_blob - Take a reference on an existing property
4349 * Take a new reference on an existing blob property.
4351 * @blob: Pointer to blob property
4353 struct drm_property_blob
*drm_property_reference_blob(struct drm_property_blob
*blob
)
4355 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4356 kref_get(&blob
->refcount
);
4359 EXPORT_SYMBOL(drm_property_reference_blob
);
4362 * Like drm_property_lookup_blob, but does not return an additional reference.
4363 * Must be called with blob_lock held.
4365 static struct drm_property_blob
*__drm_property_lookup_blob(struct drm_device
*dev
,
4368 struct drm_mode_object
*obj
= NULL
;
4369 struct drm_property_blob
*blob
;
4371 WARN_ON(!mutex_is_locked(&dev
->mode_config
.blob_lock
));
4373 mutex_lock(&dev
->mode_config
.idr_mutex
);
4374 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
4375 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_BLOB
) || (obj
->id
!= id
))
4378 blob
= obj_to_blob(obj
);
4379 mutex_unlock(&dev
->mode_config
.idr_mutex
);
4385 * drm_property_lookup_blob - look up a blob property and take a reference
4387 * @id: id of the blob property
4389 * If successful, this takes an additional reference to the blob property.
4390 * callers need to make sure to eventually unreference the returned property
4391 * again, using @drm_property_unreference_blob.
4393 struct drm_property_blob
*drm_property_lookup_blob(struct drm_device
*dev
,
4396 struct drm_property_blob
*blob
;
4398 mutex_lock(&dev
->mode_config
.blob_lock
);
4399 blob
= __drm_property_lookup_blob(dev
, id
);
4401 if (!kref_get_unless_zero(&blob
->refcount
))
4404 mutex_unlock(&dev
->mode_config
.blob_lock
);
4408 EXPORT_SYMBOL(drm_property_lookup_blob
);
4411 * drm_property_replace_global_blob - atomically replace existing blob property
4413 * @replace: location of blob property pointer to be replaced
4414 * @length: length of data for new blob, or 0 for no data
4415 * @data: content for new blob, or NULL for no data
4416 * @obj_holds_id: optional object for property holding blob ID
4417 * @prop_holds_id: optional property holding blob ID
4418 * @return 0 on success or error on failure
4420 * This function will atomically replace a global property in the blob list,
4421 * optionally updating a property which holds the ID of that property. It is
4422 * guaranteed to be atomic: no caller will be allowed to see intermediate
4423 * results, and either the entire operation will succeed and clean up the
4424 * previous property, or it will fail and the state will be unchanged.
4426 * If length is 0 or data is NULL, no new blob will be created, and the holding
4427 * property, if specified, will be set to 0.
4429 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4430 * by holding the relevant modesetting object lock for its parent.
4432 * For example, a drm_connector has a 'PATH' property, which contains the ID
4433 * of a blob property with the value of the MST path information. Calling this
4434 * function with replace pointing to the connector's path_blob_ptr, length and
4435 * data set for the new path information, obj_holds_id set to the connector's
4436 * base object, and prop_holds_id set to the path property name, will perform
4437 * a completely atomic update. The access to path_blob_ptr is protected by the
4438 * caller holding a lock on the connector.
4440 static int drm_property_replace_global_blob(struct drm_device
*dev
,
4441 struct drm_property_blob
**replace
,
4444 struct drm_mode_object
*obj_holds_id
,
4445 struct drm_property
*prop_holds_id
)
4447 struct drm_property_blob
*new_blob
= NULL
;
4448 struct drm_property_blob
*old_blob
= NULL
;
4451 WARN_ON(replace
== NULL
);
4453 old_blob
= *replace
;
4455 if (length
&& data
) {
4456 new_blob
= drm_property_create_blob(dev
, length
, data
);
4457 if (IS_ERR(new_blob
))
4458 return PTR_ERR(new_blob
);
4461 /* This does not need to be synchronised with blob_lock, as the
4462 * get_properties ioctl locks all modesetting objects, and
4463 * obj_holds_id must be locked before calling here, so we cannot
4464 * have its value out of sync with the list membership modified
4465 * below under blob_lock. */
4467 ret
= drm_object_property_set_value(obj_holds_id
,
4470 new_blob
->base
.id
: 0);
4476 drm_property_unreference_blob(old_blob
);
4478 *replace
= new_blob
;
4483 drm_property_unreference_blob(new_blob
);
4488 * drm_mode_getblob_ioctl - get the contents of a blob property value
4491 * @file_priv: DRM file info
4493 * This function retrieves the contents of a blob property. The value stored in
4494 * an object's blob property is just a normal modeset object id.
4496 * Called by the user via ioctl.
4499 * Zero on success, negative errno on failure.
4501 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
4502 void *data
, struct drm_file
*file_priv
)
4504 struct drm_mode_get_blob
*out_resp
= data
;
4505 struct drm_property_blob
*blob
;
4507 void __user
*blob_ptr
;
4509 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4512 drm_modeset_lock_all(dev
);
4513 mutex_lock(&dev
->mode_config
.blob_lock
);
4514 blob
= __drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4520 if (out_resp
->length
== blob
->length
) {
4521 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4522 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)) {
4527 out_resp
->length
= blob
->length
;
4530 mutex_unlock(&dev
->mode_config
.blob_lock
);
4531 drm_modeset_unlock_all(dev
);
4536 * drm_mode_createblob_ioctl - create a new blob property
4539 * @file_priv: DRM file info
4541 * This function creates a new blob property with user-defined values. In order
4542 * to give us sensible validation and checking when creating, rather than at
4543 * every potential use, we also require a type to be provided upfront.
4545 * Called by the user via ioctl.
4548 * Zero on success, negative errno on failure.
4550 int drm_mode_createblob_ioctl(struct drm_device
*dev
,
4551 void *data
, struct drm_file
*file_priv
)
4553 struct drm_mode_create_blob
*out_resp
= data
;
4554 struct drm_property_blob
*blob
;
4555 void __user
*blob_ptr
;
4558 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4561 blob
= drm_property_create_blob(dev
, out_resp
->length
, NULL
);
4563 return PTR_ERR(blob
);
4565 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4566 if (copy_from_user(blob
->data
, blob_ptr
, out_resp
->length
)) {
4571 /* Dropping the lock between create_blob and our access here is safe
4572 * as only the same file_priv can remove the blob; at this point, it is
4573 * not associated with any file_priv. */
4574 mutex_lock(&dev
->mode_config
.blob_lock
);
4575 out_resp
->blob_id
= blob
->base
.id
;
4576 list_add_tail(&file_priv
->blobs
, &blob
->head_file
);
4577 mutex_unlock(&dev
->mode_config
.blob_lock
);
4582 drm_property_unreference_blob(blob
);
4587 * drm_mode_destroyblob_ioctl - destroy a user blob property
4590 * @file_priv: DRM file info
4592 * Destroy an existing user-defined blob property.
4594 * Called by the user via ioctl.
4597 * Zero on success, negative errno on failure.
4599 int drm_mode_destroyblob_ioctl(struct drm_device
*dev
,
4600 void *data
, struct drm_file
*file_priv
)
4602 struct drm_mode_destroy_blob
*out_resp
= data
;
4603 struct drm_property_blob
*blob
= NULL
, *bt
;
4607 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4610 mutex_lock(&dev
->mode_config
.blob_lock
);
4611 blob
= __drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4617 /* Ensure the property was actually created by this user. */
4618 list_for_each_entry(bt
, &file_priv
->blobs
, head_file
) {
4630 /* We must drop head_file here, because we may not be the last
4631 * reference on the blob. */
4632 list_del_init(&blob
->head_file
);
4633 drm_property_unreference_blob_locked(blob
);
4634 mutex_unlock(&dev
->mode_config
.blob_lock
);
4639 mutex_unlock(&dev
->mode_config
.blob_lock
);
4644 * drm_mode_connector_set_path_property - set tile property on connector
4645 * @connector: connector to set property on.
4646 * @path: path to use for property; must not be NULL.
4648 * This creates a property to expose to userspace to specify a
4649 * connector path. This is mainly used for DisplayPort MST where
4650 * connectors have a topology and we want to allow userspace to give
4651 * them more meaningful names.
4654 * Zero on success, negative errno on failure.
4656 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4659 struct drm_device
*dev
= connector
->dev
;
4662 ret
= drm_property_replace_global_blob(dev
,
4663 &connector
->path_blob_ptr
,
4667 dev
->mode_config
.path_property
);
4670 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4673 * drm_mode_connector_set_tile_property - set tile property on connector
4674 * @connector: connector to set property on.
4676 * This looks up the tile information for a connector, and creates a
4677 * property for userspace to parse if it exists. The property is of
4678 * the form of 8 integers using ':' as a separator.
4681 * Zero on success, errno on failure.
4683 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
)
4685 struct drm_device
*dev
= connector
->dev
;
4689 if (!connector
->has_tile
) {
4690 ret
= drm_property_replace_global_blob(dev
,
4691 &connector
->tile_blob_ptr
,
4695 dev
->mode_config
.tile_property
);
4699 snprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4700 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
4701 connector
->num_h_tile
, connector
->num_v_tile
,
4702 connector
->tile_h_loc
, connector
->tile_v_loc
,
4703 connector
->tile_h_size
, connector
->tile_v_size
);
4705 ret
= drm_property_replace_global_blob(dev
,
4706 &connector
->tile_blob_ptr
,
4710 dev
->mode_config
.tile_property
);
4713 EXPORT_SYMBOL(drm_mode_connector_set_tile_property
);
4716 * drm_mode_connector_update_edid_property - update the edid property of a connector
4717 * @connector: drm connector
4718 * @edid: new value of the edid property
4720 * This function creates a new blob modeset object and assigns its id to the
4721 * connector's edid property.
4724 * Zero on success, negative errno on failure.
4726 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4727 const struct edid
*edid
)
4729 struct drm_device
*dev
= connector
->dev
;
4733 /* ignore requests to set edid when overridden */
4734 if (connector
->override_edid
)
4738 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4740 ret
= drm_property_replace_global_blob(dev
,
4741 &connector
->edid_blob_ptr
,
4745 dev
->mode_config
.edid_property
);
4748 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4750 /* Some properties could refer to dynamic refcnt'd objects, or things that
4751 * need special locking to handle lifetime issues (ie. to ensure the prop
4752 * value doesn't become invalid part way through the property update due to
4753 * race). The value returned by reference via 'obj' should be passed back
4754 * to drm_property_change_valid_put() after the property is set (and the
4755 * object to which the property is attached has a chance to take it's own
4758 bool drm_property_change_valid_get(struct drm_property
*property
,
4759 uint64_t value
, struct drm_mode_object
**ref
)
4763 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4768 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4769 if (value
< property
->values
[0] || value
> property
->values
[1])
4772 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4773 int64_t svalue
= U642I64(value
);
4775 if (svalue
< U642I64(property
->values
[0]) ||
4776 svalue
> U642I64(property
->values
[1]))
4779 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4780 uint64_t valid_mask
= 0;
4782 for (i
= 0; i
< property
->num_values
; i
++)
4783 valid_mask
|= (1ULL << property
->values
[i
]);
4784 return !(value
& ~valid_mask
);
4785 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4786 struct drm_property_blob
*blob
;
4791 blob
= drm_property_lookup_blob(property
->dev
, value
);
4798 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4799 /* a zero value for an object property translates to null: */
4803 /* handle refcnt'd objects specially: */
4804 if (property
->values
[0] == DRM_MODE_OBJECT_FB
) {
4805 struct drm_framebuffer
*fb
;
4806 fb
= drm_framebuffer_lookup(property
->dev
, value
);
4814 return _object_find(property
->dev
, value
, property
->values
[0]) != NULL
;
4818 for (i
= 0; i
< property
->num_values
; i
++)
4819 if (property
->values
[i
] == value
)
4824 void drm_property_change_valid_put(struct drm_property
*property
,
4825 struct drm_mode_object
*ref
)
4830 if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4831 if (property
->values
[0] == DRM_MODE_OBJECT_FB
)
4832 drm_framebuffer_unreference(obj_to_fb(ref
));
4833 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4834 drm_property_unreference_blob(obj_to_blob(ref
));
4838 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4841 * @file_priv: DRM file info
4843 * This function sets the current value for a connectors's property. It also
4844 * calls into a driver's ->set_property callback to update the hardware state
4846 * Called by the user via ioctl.
4849 * Zero on success, negative errno on failure.
4851 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4852 void *data
, struct drm_file
*file_priv
)
4854 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4855 struct drm_mode_obj_set_property obj_set_prop
= {
4856 .value
= conn_set_prop
->value
,
4857 .prop_id
= conn_set_prop
->prop_id
,
4858 .obj_id
= conn_set_prop
->connector_id
,
4859 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4862 /* It does all the locking and checking we need */
4863 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4866 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4867 struct drm_property
*property
,
4871 struct drm_connector
*connector
= obj_to_connector(obj
);
4873 /* Do DPMS ourselves */
4874 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4875 if (connector
->funcs
->dpms
)
4876 (*connector
->funcs
->dpms
)(connector
, (int)value
);
4878 } else if (connector
->funcs
->set_property
)
4879 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4881 /* store the property value if successful */
4883 drm_object_property_set_value(&connector
->base
, property
, value
);
4887 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4888 struct drm_property
*property
,
4892 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4894 if (crtc
->funcs
->set_property
)
4895 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4897 drm_object_property_set_value(obj
, property
, value
);
4903 * drm_mode_plane_set_obj_prop - set the value of a property
4904 * @plane: drm plane object to set property value for
4905 * @property: property to set
4906 * @value: value the property should be set to
4908 * This functions sets a given property on a given plane object. This function
4909 * calls the driver's ->set_property callback and changes the software state of
4910 * the property if the callback succeeds.
4913 * Zero on success, error code on failure.
4915 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4916 struct drm_property
*property
,
4920 struct drm_mode_object
*obj
= &plane
->base
;
4922 if (plane
->funcs
->set_property
)
4923 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4925 drm_object_property_set_value(obj
, property
, value
);
4929 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4932 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4935 * @file_priv: DRM file info
4937 * This function retrieves the current value for an object's property. Compared
4938 * to the connector specific ioctl this one is extended to also work on crtc and
4941 * Called by the user via ioctl.
4944 * Zero on success, negative errno on failure.
4946 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4947 struct drm_file
*file_priv
)
4949 struct drm_mode_obj_get_properties
*arg
= data
;
4950 struct drm_mode_object
*obj
;
4953 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4956 drm_modeset_lock_all(dev
);
4958 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4963 if (!obj
->properties
) {
4968 ret
= get_properties(obj
, file_priv
->atomic
,
4969 (uint32_t __user
*)(unsigned long)(arg
->props_ptr
),
4970 (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
),
4974 drm_modeset_unlock_all(dev
);
4979 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4982 * @file_priv: DRM file info
4984 * This function sets the current value for an object's property. It also calls
4985 * into a driver's ->set_property callback to update the hardware state.
4986 * Compared to the connector specific ioctl this one is extended to also work on
4987 * crtc and plane objects.
4989 * Called by the user via ioctl.
4992 * Zero on success, negative errno on failure.
4994 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4995 struct drm_file
*file_priv
)
4997 struct drm_mode_obj_set_property
*arg
= data
;
4998 struct drm_mode_object
*arg_obj
;
4999 struct drm_mode_object
*prop_obj
;
5000 struct drm_property
*property
;
5001 int i
, ret
= -EINVAL
;
5002 struct drm_mode_object
*ref
;
5004 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5007 drm_modeset_lock_all(dev
);
5009 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
5014 if (!arg_obj
->properties
)
5017 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
5018 if (arg_obj
->properties
->properties
[i
]->base
.id
== arg
->prop_id
)
5021 if (i
== arg_obj
->properties
->count
)
5024 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
5025 DRM_MODE_OBJECT_PROPERTY
);
5030 property
= obj_to_property(prop_obj
);
5032 if (!drm_property_change_valid_get(property
, arg
->value
, &ref
))
5035 switch (arg_obj
->type
) {
5036 case DRM_MODE_OBJECT_CONNECTOR
:
5037 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
5040 case DRM_MODE_OBJECT_CRTC
:
5041 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
5043 case DRM_MODE_OBJECT_PLANE
:
5044 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
5045 property
, arg
->value
);
5049 drm_property_change_valid_put(property
, ref
);
5052 drm_modeset_unlock_all(dev
);
5057 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5058 * @connector: connector to attach
5059 * @encoder: encoder to attach @connector to
5061 * This function links up a connector to an encoder. Note that the routing
5062 * restrictions between encoders and crtcs are exposed to userspace through the
5063 * possible_clones and possible_crtcs bitmasks.
5066 * Zero on success, negative errno on failure.
5068 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
5069 struct drm_encoder
*encoder
)
5073 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
5074 if (connector
->encoder_ids
[i
] == 0) {
5075 connector
->encoder_ids
[i
] = encoder
->base
.id
;
5081 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
5084 * drm_mode_crtc_set_gamma_size - set the gamma table size
5085 * @crtc: CRTC to set the gamma table size for
5086 * @gamma_size: size of the gamma table
5088 * Drivers which support gamma tables should set this to the supported gamma
5089 * table size when initializing the CRTC. Currently the drm core only supports a
5090 * fixed gamma table size.
5093 * Zero on success, negative errno on failure.
5095 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
5098 crtc
->gamma_size
= gamma_size
;
5100 crtc
->gamma_store
= kcalloc(gamma_size
, sizeof(uint16_t) * 3,
5102 if (!crtc
->gamma_store
) {
5103 crtc
->gamma_size
= 0;
5109 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
5112 * drm_mode_gamma_set_ioctl - set the gamma table
5115 * @file_priv: DRM file info
5117 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5118 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5120 * Called by the user via ioctl.
5123 * Zero on success, negative errno on failure.
5125 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
5126 void *data
, struct drm_file
*file_priv
)
5128 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5129 struct drm_crtc
*crtc
;
5130 void *r_base
, *g_base
, *b_base
;
5134 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5137 drm_modeset_lock_all(dev
);
5138 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5144 if (crtc
->funcs
->gamma_set
== NULL
) {
5149 /* memcpy into gamma store */
5150 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5155 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5156 r_base
= crtc
->gamma_store
;
5157 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
5162 g_base
= r_base
+ size
;
5163 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
5168 b_base
= g_base
+ size
;
5169 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
5174 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
5177 drm_modeset_unlock_all(dev
);
5183 * drm_mode_gamma_get_ioctl - get the gamma table
5186 * @file_priv: DRM file info
5188 * Copy the current gamma table into the storage provided. This also provides
5189 * the gamma table size the driver expects, which can be used to size the
5190 * allocated storage.
5192 * Called by the user via ioctl.
5195 * Zero on success, negative errno on failure.
5197 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
5198 void *data
, struct drm_file
*file_priv
)
5200 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5201 struct drm_crtc
*crtc
;
5202 void *r_base
, *g_base
, *b_base
;
5206 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5209 drm_modeset_lock_all(dev
);
5210 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5216 /* memcpy into gamma store */
5217 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5222 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5223 r_base
= crtc
->gamma_store
;
5224 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
5229 g_base
= r_base
+ size
;
5230 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
5235 b_base
= g_base
+ size
;
5236 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
5241 drm_modeset_unlock_all(dev
);
5246 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5249 * @file_priv: DRM file info
5251 * This schedules an asynchronous update on a given CRTC, called page flip.
5252 * Optionally a drm event is generated to signal the completion of the event.
5253 * Generic drivers cannot assume that a pageflip with changed framebuffer
5254 * properties (including driver specific metadata like tiling layout) will work,
5255 * but some drivers support e.g. pixel format changes through the pageflip
5258 * Called by the user via ioctl.
5261 * Zero on success, negative errno on failure.
5263 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
5264 void *data
, struct drm_file
*file_priv
)
5266 struct drm_mode_crtc_page_flip
*page_flip
= data
;
5267 struct drm_crtc
*crtc
;
5268 struct drm_framebuffer
*fb
= NULL
;
5269 struct drm_pending_vblank_event
*e
= NULL
;
5270 unsigned long flags
;
5273 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
5274 page_flip
->reserved
!= 0)
5277 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
5280 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
5284 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
5285 if (crtc
->primary
->fb
== NULL
) {
5286 /* The framebuffer is currently unbound, presumably
5287 * due to a hotplug event, that userspace has not
5294 if (crtc
->funcs
->page_flip
== NULL
)
5297 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
5303 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
5307 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
5308 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5313 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5315 spin_lock_irqsave(&dev
->event_lock
, flags
);
5316 if (file_priv
->event_space
< sizeof(e
->event
)) {
5317 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5320 file_priv
->event_space
-= sizeof(e
->event
);
5321 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5323 e
= kzalloc(sizeof(*e
), GFP_KERNEL
);
5325 spin_lock_irqsave(&dev
->event_lock
, flags
);
5326 file_priv
->event_space
+= sizeof(e
->event
);
5327 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5331 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
5332 e
->event
.base
.length
= sizeof(e
->event
);
5333 e
->event
.user_data
= page_flip
->user_data
;
5334 e
->base
.event
= &e
->event
.base
;
5335 e
->base
.file_priv
= file_priv
;
5337 (void (*) (struct drm_pending_event
*)) kfree
;
5340 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
5341 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
5343 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5344 spin_lock_irqsave(&dev
->event_lock
, flags
);
5345 file_priv
->event_space
+= sizeof(e
->event
);
5346 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5349 /* Keep the old fb, don't unref it. */
5350 crtc
->primary
->old_fb
= NULL
;
5353 * Warn if the driver hasn't properly updated the crtc->fb
5354 * field to reflect that the new framebuffer is now used.
5355 * Failing to do so will screw with the reference counting
5358 WARN_ON(crtc
->primary
->fb
!= fb
);
5359 /* Unref only the old framebuffer. */
5365 drm_framebuffer_unreference(fb
);
5366 if (crtc
->primary
->old_fb
)
5367 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
5368 crtc
->primary
->old_fb
= NULL
;
5369 drm_modeset_unlock_crtc(crtc
);
5375 * drm_mode_config_reset - call ->reset callbacks
5378 * This functions calls all the crtc's, encoder's and connector's ->reset
5379 * callback. Drivers can use this in e.g. their driver load or resume code to
5380 * reset hardware and software state.
5382 void drm_mode_config_reset(struct drm_device
*dev
)
5384 struct drm_crtc
*crtc
;
5385 struct drm_plane
*plane
;
5386 struct drm_encoder
*encoder
;
5387 struct drm_connector
*connector
;
5389 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
)
5390 if (plane
->funcs
->reset
)
5391 plane
->funcs
->reset(plane
);
5393 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
5394 if (crtc
->funcs
->reset
)
5395 crtc
->funcs
->reset(crtc
);
5397 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
5398 if (encoder
->funcs
->reset
)
5399 encoder
->funcs
->reset(encoder
);
5401 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
5402 if (connector
->funcs
->reset
)
5403 connector
->funcs
->reset(connector
);
5405 EXPORT_SYMBOL(drm_mode_config_reset
);
5408 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5411 * @file_priv: DRM file info
5413 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5414 * TTM or something else entirely) and returns the resulting buffer handle. This
5415 * handle can then be wrapped up into a framebuffer modeset object.
5417 * Note that userspace is not allowed to use such objects for render
5418 * acceleration - drivers must create their own private ioctls for such a use
5421 * Called by the user via ioctl.
5424 * Zero on success, negative errno on failure.
5426 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
5427 void *data
, struct drm_file
*file_priv
)
5429 struct drm_mode_create_dumb
*args
= data
;
5430 u32 cpp
, stride
, size
;
5432 if (!dev
->driver
->dumb_create
)
5434 if (!args
->width
|| !args
->height
|| !args
->bpp
)
5437 /* overflow checks for 32bit size calculations */
5438 /* NOTE: DIV_ROUND_UP() can overflow */
5439 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
5440 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
5442 stride
= cpp
* args
->width
;
5443 if (args
->height
> 0xffffffffU
/ stride
)
5446 /* test for wrap-around */
5447 size
= args
->height
* stride
;
5448 if (PAGE_ALIGN(size
) == 0)
5452 * handle, pitch and size are output parameters. Zero them out to
5453 * prevent drivers from accidentally using uninitialized data. Since
5454 * not all existing userspace is clearing these fields properly we
5455 * cannot reject IOCTL with garbage in them.
5461 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
5465 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5468 * @file_priv: DRM file info
5470 * Allocate an offset in the drm device node's address space to be able to
5471 * memory map a dumb buffer.
5473 * Called by the user via ioctl.
5476 * Zero on success, negative errno on failure.
5478 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
5479 void *data
, struct drm_file
*file_priv
)
5481 struct drm_mode_map_dumb
*args
= data
;
5483 /* call driver ioctl to get mmap offset */
5484 if (!dev
->driver
->dumb_map_offset
)
5487 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
5491 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5494 * @file_priv: DRM file info
5496 * This destroys the userspace handle for the given dumb backing storage buffer.
5497 * Since buffer objects must be reference counted in the kernel a buffer object
5498 * won't be immediately freed if a framebuffer modeset object still uses it.
5500 * Called by the user via ioctl.
5503 * Zero on success, negative errno on failure.
5505 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
5506 void *data
, struct drm_file
*file_priv
)
5508 struct drm_mode_destroy_dumb
*args
= data
;
5510 if (!dev
->driver
->dumb_destroy
)
5513 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
5517 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5518 * @format: pixel format (DRM_FORMAT_*)
5519 * @depth: storage for the depth value
5520 * @bpp: storage for the bpp value
5522 * This only supports RGB formats here for compat with code that doesn't use
5523 * pixel formats directly yet.
5525 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
5530 case DRM_FORMAT_RGB332
:
5531 case DRM_FORMAT_BGR233
:
5535 case DRM_FORMAT_XRGB1555
:
5536 case DRM_FORMAT_XBGR1555
:
5537 case DRM_FORMAT_RGBX5551
:
5538 case DRM_FORMAT_BGRX5551
:
5539 case DRM_FORMAT_ARGB1555
:
5540 case DRM_FORMAT_ABGR1555
:
5541 case DRM_FORMAT_RGBA5551
:
5542 case DRM_FORMAT_BGRA5551
:
5546 case DRM_FORMAT_RGB565
:
5547 case DRM_FORMAT_BGR565
:
5551 case DRM_FORMAT_RGB888
:
5552 case DRM_FORMAT_BGR888
:
5556 case DRM_FORMAT_XRGB8888
:
5557 case DRM_FORMAT_XBGR8888
:
5558 case DRM_FORMAT_RGBX8888
:
5559 case DRM_FORMAT_BGRX8888
:
5563 case DRM_FORMAT_XRGB2101010
:
5564 case DRM_FORMAT_XBGR2101010
:
5565 case DRM_FORMAT_RGBX1010102
:
5566 case DRM_FORMAT_BGRX1010102
:
5567 case DRM_FORMAT_ARGB2101010
:
5568 case DRM_FORMAT_ABGR2101010
:
5569 case DRM_FORMAT_RGBA1010102
:
5570 case DRM_FORMAT_BGRA1010102
:
5574 case DRM_FORMAT_ARGB8888
:
5575 case DRM_FORMAT_ABGR8888
:
5576 case DRM_FORMAT_RGBA8888
:
5577 case DRM_FORMAT_BGRA8888
:
5582 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5583 drm_get_format_name(format
));
5589 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
5592 * drm_format_num_planes - get the number of planes for format
5593 * @format: pixel format (DRM_FORMAT_*)
5596 * The number of planes used by the specified pixel format.
5598 int drm_format_num_planes(uint32_t format
)
5601 case DRM_FORMAT_YUV410
:
5602 case DRM_FORMAT_YVU410
:
5603 case DRM_FORMAT_YUV411
:
5604 case DRM_FORMAT_YVU411
:
5605 case DRM_FORMAT_YUV420
:
5606 case DRM_FORMAT_YVU420
:
5607 case DRM_FORMAT_YUV422
:
5608 case DRM_FORMAT_YVU422
:
5609 case DRM_FORMAT_YUV444
:
5610 case DRM_FORMAT_YVU444
:
5612 case DRM_FORMAT_NV12
:
5613 case DRM_FORMAT_NV21
:
5614 case DRM_FORMAT_NV16
:
5615 case DRM_FORMAT_NV61
:
5616 case DRM_FORMAT_NV24
:
5617 case DRM_FORMAT_NV42
:
5623 EXPORT_SYMBOL(drm_format_num_planes
);
5626 * drm_format_plane_cpp - determine the bytes per pixel value
5627 * @format: pixel format (DRM_FORMAT_*)
5628 * @plane: plane index
5631 * The bytes per pixel value for the specified plane.
5633 int drm_format_plane_cpp(uint32_t format
, int plane
)
5638 if (plane
>= drm_format_num_planes(format
))
5642 case DRM_FORMAT_YUYV
:
5643 case DRM_FORMAT_YVYU
:
5644 case DRM_FORMAT_UYVY
:
5645 case DRM_FORMAT_VYUY
:
5647 case DRM_FORMAT_NV12
:
5648 case DRM_FORMAT_NV21
:
5649 case DRM_FORMAT_NV16
:
5650 case DRM_FORMAT_NV61
:
5651 case DRM_FORMAT_NV24
:
5652 case DRM_FORMAT_NV42
:
5653 return plane
? 2 : 1;
5654 case DRM_FORMAT_YUV410
:
5655 case DRM_FORMAT_YVU410
:
5656 case DRM_FORMAT_YUV411
:
5657 case DRM_FORMAT_YVU411
:
5658 case DRM_FORMAT_YUV420
:
5659 case DRM_FORMAT_YVU420
:
5660 case DRM_FORMAT_YUV422
:
5661 case DRM_FORMAT_YVU422
:
5662 case DRM_FORMAT_YUV444
:
5663 case DRM_FORMAT_YVU444
:
5666 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
5670 EXPORT_SYMBOL(drm_format_plane_cpp
);
5673 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5674 * @format: pixel format (DRM_FORMAT_*)
5677 * The horizontal chroma subsampling factor for the
5678 * specified pixel format.
5680 int drm_format_horz_chroma_subsampling(uint32_t format
)
5683 case DRM_FORMAT_YUV411
:
5684 case DRM_FORMAT_YVU411
:
5685 case DRM_FORMAT_YUV410
:
5686 case DRM_FORMAT_YVU410
:
5688 case DRM_FORMAT_YUYV
:
5689 case DRM_FORMAT_YVYU
:
5690 case DRM_FORMAT_UYVY
:
5691 case DRM_FORMAT_VYUY
:
5692 case DRM_FORMAT_NV12
:
5693 case DRM_FORMAT_NV21
:
5694 case DRM_FORMAT_NV16
:
5695 case DRM_FORMAT_NV61
:
5696 case DRM_FORMAT_YUV422
:
5697 case DRM_FORMAT_YVU422
:
5698 case DRM_FORMAT_YUV420
:
5699 case DRM_FORMAT_YVU420
:
5705 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5708 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5709 * @format: pixel format (DRM_FORMAT_*)
5712 * The vertical chroma subsampling factor for the
5713 * specified pixel format.
5715 int drm_format_vert_chroma_subsampling(uint32_t format
)
5718 case DRM_FORMAT_YUV410
:
5719 case DRM_FORMAT_YVU410
:
5721 case DRM_FORMAT_YUV420
:
5722 case DRM_FORMAT_YVU420
:
5723 case DRM_FORMAT_NV12
:
5724 case DRM_FORMAT_NV21
:
5730 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5733 * drm_rotation_simplify() - Try to simplify the rotation
5734 * @rotation: Rotation to be simplified
5735 * @supported_rotations: Supported rotations
5737 * Attempt to simplify the rotation to a form that is supported.
5738 * Eg. if the hardware supports everything except DRM_REFLECT_X
5739 * one could call this function like this:
5741 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5742 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5743 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5745 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5746 * transforms the hardware supports, this function may not
5747 * be able to produce a supported transform, so the caller should
5748 * check the result afterwards.
5750 unsigned int drm_rotation_simplify(unsigned int rotation
,
5751 unsigned int supported_rotations
)
5753 if (rotation
& ~supported_rotations
) {
5754 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5755 rotation
= (rotation
& ~0xf) | BIT((ffs(rotation
& 0xf) + 1) % 4);
5760 EXPORT_SYMBOL(drm_rotation_simplify
);
5763 * drm_mode_config_init - initialize DRM mode_configuration structure
5766 * Initialize @dev's mode_config structure, used for tracking the graphics
5767 * configuration of @dev.
5769 * Since this initializes the modeset locks, no locking is possible. Which is no
5770 * problem, since this should happen single threaded at init time. It is the
5771 * driver's problem to ensure this guarantee.
5774 void drm_mode_config_init(struct drm_device
*dev
)
5776 mutex_init(&dev
->mode_config
.mutex
);
5777 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5778 mutex_init(&dev
->mode_config
.idr_mutex
);
5779 mutex_init(&dev
->mode_config
.fb_lock
);
5780 mutex_init(&dev
->mode_config
.blob_lock
);
5781 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5782 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5783 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5784 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5785 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5786 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5787 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5788 idr_init(&dev
->mode_config
.crtc_idr
);
5789 idr_init(&dev
->mode_config
.tile_idr
);
5791 drm_modeset_lock_all(dev
);
5792 drm_mode_create_standard_properties(dev
);
5793 drm_modeset_unlock_all(dev
);
5795 /* Just to be sure */
5796 dev
->mode_config
.num_fb
= 0;
5797 dev
->mode_config
.num_connector
= 0;
5798 dev
->mode_config
.num_crtc
= 0;
5799 dev
->mode_config
.num_encoder
= 0;
5800 dev
->mode_config
.num_overlay_plane
= 0;
5801 dev
->mode_config
.num_total_plane
= 0;
5803 EXPORT_SYMBOL(drm_mode_config_init
);
5806 * drm_mode_config_cleanup - free up DRM mode_config info
5809 * Free up all the connectors and CRTCs associated with this DRM device, then
5810 * free up the framebuffers and associated buffer objects.
5812 * Note that since this /should/ happen single-threaded at driver/device
5813 * teardown time, no locking is required. It's the driver's job to ensure that
5814 * this guarantee actually holds true.
5816 * FIXME: cleanup any dangling user buffer objects too
5818 void drm_mode_config_cleanup(struct drm_device
*dev
)
5820 struct drm_connector
*connector
, *ot
;
5821 struct drm_crtc
*crtc
, *ct
;
5822 struct drm_encoder
*encoder
, *enct
;
5823 struct drm_framebuffer
*fb
, *fbt
;
5824 struct drm_property
*property
, *pt
;
5825 struct drm_property_blob
*blob
, *bt
;
5826 struct drm_plane
*plane
, *plt
;
5828 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5830 encoder
->funcs
->destroy(encoder
);
5833 list_for_each_entry_safe(connector
, ot
,
5834 &dev
->mode_config
.connector_list
, head
) {
5835 connector
->funcs
->destroy(connector
);
5838 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5840 drm_property_destroy(dev
, property
);
5843 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5845 drm_property_unreference_blob(blob
);
5849 * Single-threaded teardown context, so it's not required to grab the
5850 * fb_lock to protect against concurrent fb_list access. Contrary, it
5851 * would actually deadlock with the drm_framebuffer_cleanup function.
5853 * Also, if there are any framebuffers left, that's a driver leak now,
5854 * so politely WARN about this.
5856 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5857 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5858 drm_framebuffer_remove(fb
);
5861 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5863 plane
->funcs
->destroy(plane
);
5866 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5867 crtc
->funcs
->destroy(crtc
);
5870 idr_destroy(&dev
->mode_config
.tile_idr
);
5871 idr_destroy(&dev
->mode_config
.crtc_idr
);
5872 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5874 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5876 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5877 unsigned int supported_rotations
)
5879 static const struct drm_prop_enum_list props
[] = {
5880 { DRM_ROTATE_0
, "rotate-0" },
5881 { DRM_ROTATE_90
, "rotate-90" },
5882 { DRM_ROTATE_180
, "rotate-180" },
5883 { DRM_ROTATE_270
, "rotate-270" },
5884 { DRM_REFLECT_X
, "reflect-x" },
5885 { DRM_REFLECT_Y
, "reflect-y" },
5888 return drm_property_create_bitmask(dev
, 0, "rotation",
5889 props
, ARRAY_SIZE(props
),
5890 supported_rotations
);
5892 EXPORT_SYMBOL(drm_mode_create_rotation_property
);
5897 * Tile groups are used to represent tiled monitors with a unique
5898 * integer identifier. Tiled monitors using DisplayID v1.3 have
5899 * a unique 8-byte handle, we store this in a tile group, so we
5900 * have a common identifier for all tiles in a monitor group.
5902 static void drm_tile_group_free(struct kref
*kref
)
5904 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
5905 struct drm_device
*dev
= tg
->dev
;
5906 mutex_lock(&dev
->mode_config
.idr_mutex
);
5907 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
5908 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5913 * drm_mode_put_tile_group - drop a reference to a tile group.
5915 * @tg: tile group to drop reference to.
5917 * drop reference to tile group and free if 0.
5919 void drm_mode_put_tile_group(struct drm_device
*dev
,
5920 struct drm_tile_group
*tg
)
5922 kref_put(&tg
->refcount
, drm_tile_group_free
);
5926 * drm_mode_get_tile_group - get a reference to an existing tile group
5928 * @topology: 8-bytes unique per monitor.
5930 * Use the unique bytes to get a reference to an existing tile group.
5933 * tile group or NULL if not found.
5935 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
5938 struct drm_tile_group
*tg
;
5940 mutex_lock(&dev
->mode_config
.idr_mutex
);
5941 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
5942 if (!memcmp(tg
->group_data
, topology
, 8)) {
5943 if (!kref_get_unless_zero(&tg
->refcount
))
5945 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5949 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5952 EXPORT_SYMBOL(drm_mode_get_tile_group
);
5955 * drm_mode_create_tile_group - create a tile group from a displayid description
5957 * @topology: 8-bytes unique per monitor.
5959 * Create a tile group for the unique monitor, and get a unique
5960 * identifier for the tile group.
5963 * new tile group or error.
5965 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
5968 struct drm_tile_group
*tg
;
5971 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
5973 return ERR_PTR(-ENOMEM
);
5975 kref_init(&tg
->refcount
);
5976 memcpy(tg
->group_data
, topology
, 8);
5979 mutex_lock(&dev
->mode_config
.idr_mutex
);
5980 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
5988 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5991 EXPORT_SYMBOL(drm_mode_create_tile_group
);