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
*add_framebuffer_internal(struct drm_device
*dev
,
47 struct drm_mode_fb_cmd2
*r
,
48 struct drm_file
*file_priv
);
50 /* Avoid boilerplate. I'm tired of typing. */
51 #define DRM_ENUM_NAME_FN(fnname, list) \
52 const char *fnname(int val) \
55 for (i = 0; i < ARRAY_SIZE(list); i++) { \
56 if (list[i].type == val) \
57 return list[i].name; \
65 static const struct drm_prop_enum_list drm_dpms_enum_list
[] = {
66 { DRM_MODE_DPMS_ON
, "On" },
67 { DRM_MODE_DPMS_STANDBY
, "Standby" },
68 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
69 { DRM_MODE_DPMS_OFF
, "Off" }
72 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
74 static const struct drm_prop_enum_list drm_plane_type_enum_list
[] = {
75 { DRM_PLANE_TYPE_OVERLAY
, "Overlay" },
76 { DRM_PLANE_TYPE_PRIMARY
, "Primary" },
77 { DRM_PLANE_TYPE_CURSOR
, "Cursor" },
83 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] = {
84 { DRM_MODE_SCALE_NONE
, "None" },
85 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
86 { DRM_MODE_SCALE_CENTER
, "Center" },
87 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
90 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list
[] = {
91 { DRM_MODE_PICTURE_ASPECT_NONE
, "Automatic" },
92 { DRM_MODE_PICTURE_ASPECT_4_3
, "4:3" },
93 { DRM_MODE_PICTURE_ASPECT_16_9
, "16:9" },
97 * Non-global properties, but "required" for certain connectors.
99 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list
[] = {
100 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
101 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
102 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
105 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
107 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] = {
108 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
109 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
110 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
113 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
114 drm_dvi_i_subconnector_enum_list
)
116 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] = {
117 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
118 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
119 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
124 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
126 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] = {
127 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
128 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
129 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
134 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
135 drm_tv_subconnector_enum_list
)
137 static const struct drm_prop_enum_list drm_dirty_info_enum_list
[] = {
138 { DRM_MODE_DIRTY_OFF
, "Off" },
139 { DRM_MODE_DIRTY_ON
, "On" },
140 { DRM_MODE_DIRTY_ANNOTATE
, "Annotate" },
143 struct drm_conn_prop_enum_list
{
150 * Connector and encoder types.
152 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] = {
153 { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
154 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
155 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
156 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
157 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
158 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
159 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
160 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
161 { DRM_MODE_CONNECTOR_Component
, "Component" },
162 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
163 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
164 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
165 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
166 { DRM_MODE_CONNECTOR_TV
, "TV" },
167 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
168 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
169 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
172 static const struct drm_prop_enum_list drm_encoder_enum_list
[] = {
173 { DRM_MODE_ENCODER_NONE
, "None" },
174 { DRM_MODE_ENCODER_DAC
, "DAC" },
175 { DRM_MODE_ENCODER_TMDS
, "TMDS" },
176 { DRM_MODE_ENCODER_LVDS
, "LVDS" },
177 { DRM_MODE_ENCODER_TVDAC
, "TV" },
178 { DRM_MODE_ENCODER_VIRTUAL
, "Virtual" },
179 { DRM_MODE_ENCODER_DSI
, "DSI" },
180 { DRM_MODE_ENCODER_DPMST
, "DP MST" },
183 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] = {
184 { SubPixelUnknown
, "Unknown" },
185 { SubPixelHorizontalRGB
, "Horizontal RGB" },
186 { SubPixelHorizontalBGR
, "Horizontal BGR" },
187 { SubPixelVerticalRGB
, "Vertical RGB" },
188 { SubPixelVerticalBGR
, "Vertical BGR" },
189 { SubPixelNone
, "None" },
192 void drm_connector_ida_init(void)
196 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
197 ida_init(&drm_connector_enum_list
[i
].ida
);
200 void drm_connector_ida_destroy(void)
204 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
205 ida_destroy(&drm_connector_enum_list
[i
].ida
);
209 * drm_get_connector_status_name - return a string for connector status
210 * @status: connector status to compute name of
212 * In contrast to the other drm_get_*_name functions this one here returns a
213 * const pointer and hence is threadsafe.
215 const char *drm_get_connector_status_name(enum drm_connector_status status
)
217 if (status
== connector_status_connected
)
219 else if (status
== connector_status_disconnected
)
220 return "disconnected";
224 EXPORT_SYMBOL(drm_get_connector_status_name
);
227 * drm_get_subpixel_order_name - return a string for a given subpixel enum
228 * @order: enum of subpixel_order
230 * Note you could abuse this and return something out of bounds, but that
231 * would be a caller error. No unscrubbed user data should make it here.
233 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
235 return drm_subpixel_enum_list
[order
].name
;
237 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
239 static char printable_char(int c
)
241 return isascii(c
) && isprint(c
) ? c
: '?';
245 * drm_get_format_name - return a string for drm fourcc format
246 * @format: format to compute name of
248 * Note that the buffer used by this function is globally shared and owned by
249 * the function itself.
251 * FIXME: This isn't really multithreading safe.
253 const char *drm_get_format_name(uint32_t format
)
257 snprintf(buf
, sizeof(buf
),
258 "%c%c%c%c %s-endian (0x%08x)",
259 printable_char(format
& 0xff),
260 printable_char((format
>> 8) & 0xff),
261 printable_char((format
>> 16) & 0xff),
262 printable_char((format
>> 24) & 0x7f),
263 format
& DRM_FORMAT_BIG_ENDIAN
? "big" : "little",
268 EXPORT_SYMBOL(drm_get_format_name
);
271 * Internal function to assign a slot in the object idr and optionally
272 * register the object into the idr.
274 static int drm_mode_object_get_reg(struct drm_device
*dev
,
275 struct drm_mode_object
*obj
,
281 mutex_lock(&dev
->mode_config
.idr_mutex
);
282 ret
= idr_alloc(&dev
->mode_config
.crtc_idr
, register_obj
? obj
: NULL
, 1, 0, GFP_KERNEL
);
285 * Set up the object linking under the protection of the idr
286 * lock so that other users can't see inconsistent state.
289 obj
->type
= obj_type
;
291 mutex_unlock(&dev
->mode_config
.idr_mutex
);
293 return ret
< 0 ? ret
: 0;
297 * drm_mode_object_get - allocate a new modeset identifier
299 * @obj: object pointer, used to generate unique ID
300 * @obj_type: object type
302 * Create a unique identifier based on @ptr in @dev's identifier space. Used
303 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
304 * modeset identifiers are _not_ reference counted. Hence don't use this for
305 * reference counted modeset objects like framebuffers.
308 * New unique (relative to other objects in @dev) integer identifier for the
311 int drm_mode_object_get(struct drm_device
*dev
,
312 struct drm_mode_object
*obj
, uint32_t obj_type
)
314 return drm_mode_object_get_reg(dev
, obj
, obj_type
, true);
317 static void drm_mode_object_register(struct drm_device
*dev
,
318 struct drm_mode_object
*obj
)
320 mutex_lock(&dev
->mode_config
.idr_mutex
);
321 idr_replace(&dev
->mode_config
.crtc_idr
, obj
, obj
->id
);
322 mutex_unlock(&dev
->mode_config
.idr_mutex
);
326 * drm_mode_object_put - free a modeset identifer
328 * @object: object to free
330 * Free @id from @dev's unique identifier pool. Note that despite the _get
331 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
332 * for reference counted modeset objects like framebuffers.
334 void drm_mode_object_put(struct drm_device
*dev
,
335 struct drm_mode_object
*object
)
337 mutex_lock(&dev
->mode_config
.idr_mutex
);
338 idr_remove(&dev
->mode_config
.crtc_idr
, object
->id
);
339 mutex_unlock(&dev
->mode_config
.idr_mutex
);
342 static struct drm_mode_object
*_object_find(struct drm_device
*dev
,
343 uint32_t id
, uint32_t type
)
345 struct drm_mode_object
*obj
= NULL
;
347 mutex_lock(&dev
->mode_config
.idr_mutex
);
348 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
349 if (obj
&& type
!= DRM_MODE_OBJECT_ANY
&& obj
->type
!= type
)
351 if (obj
&& obj
->id
!= id
)
353 /* don't leak out unref'd fb's */
354 if (obj
&& (obj
->type
== DRM_MODE_OBJECT_FB
))
356 mutex_unlock(&dev
->mode_config
.idr_mutex
);
362 * drm_mode_object_find - look up a drm object with static lifetime
364 * @id: id of the mode object
365 * @type: type of the mode object
367 * Note that framebuffers cannot be looked up with this functions - since those
368 * are reference counted, they need special treatment. Even with
369 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
370 * rather than WARN_ON()).
372 struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
373 uint32_t id
, uint32_t type
)
375 struct drm_mode_object
*obj
= NULL
;
377 /* Framebuffers are reference counted and need their own lookup
379 WARN_ON(type
== DRM_MODE_OBJECT_FB
);
380 obj
= _object_find(dev
, id
, type
);
383 EXPORT_SYMBOL(drm_mode_object_find
);
386 * drm_framebuffer_init - initialize a framebuffer
388 * @fb: framebuffer to be initialized
389 * @funcs: ... with these functions
391 * Allocates an ID for the framebuffer's parent mode object, sets its mode
392 * functions & device file and adds it to the master fd list.
395 * This functions publishes the fb and makes it available for concurrent access
396 * by other users. Which means by this point the fb _must_ be fully set up -
397 * since all the fb attributes are invariant over its lifetime, no further
398 * locking but only correct reference counting is required.
401 * Zero on success, error code on failure.
403 int drm_framebuffer_init(struct drm_device
*dev
, struct drm_framebuffer
*fb
,
404 const struct drm_framebuffer_funcs
*funcs
)
408 mutex_lock(&dev
->mode_config
.fb_lock
);
409 kref_init(&fb
->refcount
);
410 INIT_LIST_HEAD(&fb
->filp_head
);
414 ret
= drm_mode_object_get(dev
, &fb
->base
, DRM_MODE_OBJECT_FB
);
418 dev
->mode_config
.num_fb
++;
419 list_add(&fb
->head
, &dev
->mode_config
.fb_list
);
421 mutex_unlock(&dev
->mode_config
.fb_lock
);
425 EXPORT_SYMBOL(drm_framebuffer_init
);
427 /* dev->mode_config.fb_lock must be held! */
428 static void __drm_framebuffer_unregister(struct drm_device
*dev
,
429 struct drm_framebuffer
*fb
)
431 mutex_lock(&dev
->mode_config
.idr_mutex
);
432 idr_remove(&dev
->mode_config
.crtc_idr
, fb
->base
.id
);
433 mutex_unlock(&dev
->mode_config
.idr_mutex
);
438 static void drm_framebuffer_free(struct kref
*kref
)
440 struct drm_framebuffer
*fb
=
441 container_of(kref
, struct drm_framebuffer
, refcount
);
442 struct drm_device
*dev
= fb
->dev
;
445 * The lookup idr holds a weak reference, which has not necessarily been
446 * removed at this point. Check for that.
448 mutex_lock(&dev
->mode_config
.fb_lock
);
450 /* Mark fb as reaped and drop idr ref. */
451 __drm_framebuffer_unregister(dev
, fb
);
453 mutex_unlock(&dev
->mode_config
.fb_lock
);
455 fb
->funcs
->destroy(fb
);
458 static struct drm_framebuffer
*__drm_framebuffer_lookup(struct drm_device
*dev
,
461 struct drm_mode_object
*obj
= NULL
;
462 struct drm_framebuffer
*fb
;
464 mutex_lock(&dev
->mode_config
.idr_mutex
);
465 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
466 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_FB
) || (obj
->id
!= id
))
470 mutex_unlock(&dev
->mode_config
.idr_mutex
);
476 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
478 * @id: id of the fb object
480 * If successful, this grabs an additional reference to the framebuffer -
481 * callers need to make sure to eventually unreference the returned framebuffer
482 * again, using @drm_framebuffer_unreference.
484 struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
487 struct drm_framebuffer
*fb
;
489 mutex_lock(&dev
->mode_config
.fb_lock
);
490 fb
= __drm_framebuffer_lookup(dev
, id
);
492 if (!kref_get_unless_zero(&fb
->refcount
))
495 mutex_unlock(&dev
->mode_config
.fb_lock
);
499 EXPORT_SYMBOL(drm_framebuffer_lookup
);
502 * drm_framebuffer_unreference - unref a framebuffer
503 * @fb: framebuffer to unref
505 * This functions decrements the fb's refcount and frees it if it drops to zero.
507 void drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
509 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
510 kref_put(&fb
->refcount
, drm_framebuffer_free
);
512 EXPORT_SYMBOL(drm_framebuffer_unreference
);
515 * drm_framebuffer_reference - incr the fb refcnt
518 * This functions increments the fb's refcount.
520 void drm_framebuffer_reference(struct drm_framebuffer
*fb
)
522 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
523 kref_get(&fb
->refcount
);
525 EXPORT_SYMBOL(drm_framebuffer_reference
);
527 static void drm_framebuffer_free_bug(struct kref
*kref
)
532 static void __drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
534 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
535 kref_put(&fb
->refcount
, drm_framebuffer_free_bug
);
539 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
540 * @fb: fb to unregister
542 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
543 * those used for fbdev. Note that the caller must hold a reference of it's own,
544 * i.e. the object may not be destroyed through this call (since it'll lead to a
545 * locking inversion).
547 void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
)
549 struct drm_device
*dev
= fb
->dev
;
551 mutex_lock(&dev
->mode_config
.fb_lock
);
552 /* Mark fb as reaped and drop idr ref. */
553 __drm_framebuffer_unregister(dev
, fb
);
554 mutex_unlock(&dev
->mode_config
.fb_lock
);
556 EXPORT_SYMBOL(drm_framebuffer_unregister_private
);
559 * drm_framebuffer_cleanup - remove a framebuffer object
560 * @fb: framebuffer to remove
562 * Cleanup framebuffer. This function is intended to be used from the drivers
563 * ->destroy callback. It can also be used to clean up driver private
564 * framebuffers embedded into a larger structure.
566 * Note that this function does not remove the fb from active usuage - if it is
567 * still used anywhere, hilarity can ensue since userspace could call getfb on
568 * the id and get back -EINVAL. Obviously no concern at driver unload time.
570 * Also, the framebuffer will not be removed from the lookup idr - for
571 * user-created framebuffers this will happen in in the rmfb ioctl. For
572 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
573 * drm_framebuffer_unregister_private.
575 void drm_framebuffer_cleanup(struct drm_framebuffer
*fb
)
577 struct drm_device
*dev
= fb
->dev
;
579 mutex_lock(&dev
->mode_config
.fb_lock
);
581 dev
->mode_config
.num_fb
--;
582 mutex_unlock(&dev
->mode_config
.fb_lock
);
584 EXPORT_SYMBOL(drm_framebuffer_cleanup
);
587 * drm_framebuffer_remove - remove and unreference a framebuffer object
588 * @fb: framebuffer to remove
590 * Scans all the CRTCs and planes in @dev's mode_config. If they're
591 * using @fb, removes it, setting it to NULL. Then drops the reference to the
592 * passed-in framebuffer. Might take the modeset locks.
594 * Note that this function optimizes the cleanup away if the caller holds the
595 * last reference to the framebuffer. It is also guaranteed to not take the
596 * modeset locks in this case.
598 void drm_framebuffer_remove(struct drm_framebuffer
*fb
)
600 struct drm_device
*dev
= fb
->dev
;
601 struct drm_crtc
*crtc
;
602 struct drm_plane
*plane
;
603 struct drm_mode_set set
;
606 WARN_ON(!list_empty(&fb
->filp_head
));
609 * drm ABI mandates that we remove any deleted framebuffers from active
610 * useage. But since most sane clients only remove framebuffers they no
611 * longer need, try to optimize this away.
613 * Since we're holding a reference ourselves, observing a refcount of 1
614 * means that we're the last holder and can skip it. Also, the refcount
615 * can never increase from 1 again, so we don't need any barriers or
618 * Note that userspace could try to race with use and instate a new
619 * usage _after_ we've cleared all current ones. End result will be an
620 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
623 if (atomic_read(&fb
->refcount
.refcount
) > 1) {
624 drm_modeset_lock_all(dev
);
625 /* remove from any CRTC */
626 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
627 if (crtc
->primary
->fb
== fb
) {
628 /* should turn off the crtc */
629 memset(&set
, 0, sizeof(struct drm_mode_set
));
632 ret
= drm_mode_set_config_internal(&set
);
634 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc
);
638 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
) {
640 drm_plane_force_disable(plane
);
642 drm_modeset_unlock_all(dev
);
645 drm_framebuffer_unreference(fb
);
647 EXPORT_SYMBOL(drm_framebuffer_remove
);
649 DEFINE_WW_CLASS(crtc_ww_class
);
652 * drm_crtc_init_with_planes - Initialise a new CRTC object with
653 * specified primary and cursor planes.
655 * @crtc: CRTC object to init
656 * @primary: Primary plane for CRTC
657 * @cursor: Cursor plane for CRTC
658 * @funcs: callbacks for the new CRTC
660 * Inits a new object created as base part of a driver crtc object.
663 * Zero on success, error code on failure.
665 int drm_crtc_init_with_planes(struct drm_device
*dev
, struct drm_crtc
*crtc
,
666 struct drm_plane
*primary
,
667 struct drm_plane
*cursor
,
668 const struct drm_crtc_funcs
*funcs
)
670 struct drm_mode_config
*config
= &dev
->mode_config
;
675 crtc
->invert_dimensions
= false;
677 drm_modeset_lock_init(&crtc
->mutex
);
678 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
682 crtc
->base
.properties
= &crtc
->properties
;
684 list_add_tail(&crtc
->head
, &config
->crtc_list
);
687 crtc
->primary
= primary
;
688 crtc
->cursor
= cursor
;
690 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
692 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
694 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
695 drm_object_attach_property(&crtc
->base
, config
->prop_active
, 0);
700 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
703 * drm_crtc_cleanup - Clean up the core crtc usage
704 * @crtc: CRTC to cleanup
706 * This function cleans up @crtc and removes it from the DRM mode setting
707 * core. Note that the function does *not* free the crtc structure itself,
708 * this is the responsibility of the caller.
710 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
712 struct drm_device
*dev
= crtc
->dev
;
714 kfree(crtc
->gamma_store
);
715 crtc
->gamma_store
= NULL
;
717 drm_modeset_lock_fini(&crtc
->mutex
);
719 drm_mode_object_put(dev
, &crtc
->base
);
720 list_del(&crtc
->head
);
721 dev
->mode_config
.num_crtc
--;
723 WARN_ON(crtc
->state
&& !crtc
->funcs
->atomic_destroy_state
);
724 if (crtc
->state
&& crtc
->funcs
->atomic_destroy_state
)
725 crtc
->funcs
->atomic_destroy_state(crtc
, crtc
->state
);
727 memset(crtc
, 0, sizeof(*crtc
));
729 EXPORT_SYMBOL(drm_crtc_cleanup
);
732 * drm_crtc_index - find the index of a registered CRTC
733 * @crtc: CRTC to find index for
735 * Given a registered CRTC, return the index of that CRTC within a DRM
736 * device's list of CRTCs.
738 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
740 unsigned int index
= 0;
741 struct drm_crtc
*tmp
;
743 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
752 EXPORT_SYMBOL(drm_crtc_index
);
755 * drm_mode_remove - remove and free a mode
756 * @connector: connector list to modify
757 * @mode: mode to remove
759 * Remove @mode from @connector's mode list, then free it.
761 static void drm_mode_remove(struct drm_connector
*connector
,
762 struct drm_display_mode
*mode
)
764 list_del(&mode
->head
);
765 drm_mode_destroy(connector
->dev
, mode
);
769 * drm_display_info_set_bus_formats - set the supported bus formats
770 * @info: display info to store bus formats in
771 * @formats: array containing the supported bus formats
772 * @num_formats: the number of entries in the fmts array
774 * Store the supported bus formats in display info structure.
775 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
776 * a full list of available formats.
778 int drm_display_info_set_bus_formats(struct drm_display_info
*info
,
780 unsigned int num_formats
)
784 if (!formats
&& num_formats
)
787 if (formats
&& num_formats
) {
788 fmts
= kmemdup(formats
, sizeof(*formats
) * num_formats
,
794 kfree(info
->bus_formats
);
795 info
->bus_formats
= fmts
;
796 info
->num_bus_formats
= num_formats
;
800 EXPORT_SYMBOL(drm_display_info_set_bus_formats
);
803 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
804 * @connector: connector to quwery
806 * The kernel supports per-connector configration of its consoles through
807 * use of the video= parameter. This function parses that option and
808 * extracts the user's specified mode (or enable/disable status) for a
809 * particular connector. This is typically only used during the early fbdev
812 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
814 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
817 if (fb_get_options(connector
->name
, &option
))
820 if (!drm_mode_parse_command_line_for_connector(option
,
828 switch (mode
->force
) {
832 case DRM_FORCE_ON_DIGITAL
:
841 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
842 connector
->force
= mode
->force
;
845 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
847 mode
->xres
, mode
->yres
,
848 mode
->refresh_specified
? mode
->refresh
: 60,
849 mode
->rb
? " reduced blanking" : "",
850 mode
->margins
? " with margins" : "",
851 mode
->interlace
? " interlaced" : "");
855 * drm_connector_init - Init a preallocated connector
857 * @connector: the connector to init
858 * @funcs: callbacks for this connector
859 * @connector_type: user visible type of the connector
861 * Initialises a preallocated connector. Connectors should be
862 * subclassed as part of driver connector objects.
865 * Zero on success, error code on failure.
867 int drm_connector_init(struct drm_device
*dev
,
868 struct drm_connector
*connector
,
869 const struct drm_connector_funcs
*funcs
,
872 struct drm_mode_config
*config
= &dev
->mode_config
;
874 struct ida
*connector_ida
=
875 &drm_connector_enum_list
[connector_type
].ida
;
877 drm_modeset_lock_all(dev
);
879 ret
= drm_mode_object_get_reg(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
, false);
883 connector
->base
.properties
= &connector
->properties
;
884 connector
->dev
= dev
;
885 connector
->funcs
= funcs
;
886 connector
->connector_type
= connector_type
;
887 connector
->connector_type_id
=
888 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
889 if (connector
->connector_type_id
< 0) {
890 ret
= connector
->connector_type_id
;
894 kasprintf(GFP_KERNEL
, "%s-%d",
895 drm_connector_enum_list
[connector_type
].name
,
896 connector
->connector_type_id
);
897 if (!connector
->name
) {
902 INIT_LIST_HEAD(&connector
->probed_modes
);
903 INIT_LIST_HEAD(&connector
->modes
);
904 connector
->edid_blob_ptr
= NULL
;
905 connector
->status
= connector_status_unknown
;
907 drm_connector_get_cmdline_mode(connector
);
909 /* We should add connectors at the end to avoid upsetting the connector
911 list_add_tail(&connector
->head
, &config
->connector_list
);
912 config
->num_connector
++;
914 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
915 drm_object_attach_property(&connector
->base
,
916 config
->edid_property
,
919 drm_object_attach_property(&connector
->base
,
920 config
->dpms_property
, 0);
922 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
923 drm_object_attach_property(&connector
->base
, config
->prop_crtc_id
, 0);
926 connector
->debugfs_entry
= NULL
;
930 drm_mode_object_put(dev
, &connector
->base
);
933 drm_modeset_unlock_all(dev
);
937 EXPORT_SYMBOL(drm_connector_init
);
940 * drm_connector_cleanup - cleans up an initialised connector
941 * @connector: connector to cleanup
943 * Cleans up the connector but doesn't free the object.
945 void drm_connector_cleanup(struct drm_connector
*connector
)
947 struct drm_device
*dev
= connector
->dev
;
948 struct drm_display_mode
*mode
, *t
;
950 if (connector
->tile_group
) {
951 drm_mode_put_tile_group(dev
, connector
->tile_group
);
952 connector
->tile_group
= NULL
;
955 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
956 drm_mode_remove(connector
, mode
);
958 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
959 drm_mode_remove(connector
, mode
);
961 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
962 connector
->connector_type_id
);
964 kfree(connector
->display_info
.bus_formats
);
965 drm_mode_object_put(dev
, &connector
->base
);
966 kfree(connector
->name
);
967 connector
->name
= NULL
;
968 list_del(&connector
->head
);
969 dev
->mode_config
.num_connector
--;
971 WARN_ON(connector
->state
&& !connector
->funcs
->atomic_destroy_state
);
972 if (connector
->state
&& connector
->funcs
->atomic_destroy_state
)
973 connector
->funcs
->atomic_destroy_state(connector
,
976 memset(connector
, 0, sizeof(*connector
));
978 EXPORT_SYMBOL(drm_connector_cleanup
);
981 * drm_connector_index - find the index of a registered connector
982 * @connector: connector to find index for
984 * Given a registered connector, return the index of that connector within a DRM
985 * device's list of connectors.
987 unsigned int drm_connector_index(struct drm_connector
*connector
)
989 unsigned int index
= 0;
990 struct drm_connector
*tmp
;
991 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
993 WARN_ON(!drm_modeset_is_locked(&config
->connection_mutex
));
995 list_for_each_entry(tmp
, &connector
->dev
->mode_config
.connector_list
, head
) {
996 if (tmp
== connector
)
1004 EXPORT_SYMBOL(drm_connector_index
);
1007 * drm_connector_register - register a connector
1008 * @connector: the connector to register
1010 * Register userspace interfaces for a connector
1013 * Zero on success, error code on failure.
1015 int drm_connector_register(struct drm_connector
*connector
)
1019 drm_mode_object_register(connector
->dev
, &connector
->base
);
1021 ret
= drm_sysfs_connector_add(connector
);
1025 ret
= drm_debugfs_connector_add(connector
);
1027 drm_sysfs_connector_remove(connector
);
1033 EXPORT_SYMBOL(drm_connector_register
);
1036 * drm_connector_unregister - unregister a connector
1037 * @connector: the connector to unregister
1039 * Unregister userspace interfaces for a connector
1041 void drm_connector_unregister(struct drm_connector
*connector
)
1043 drm_sysfs_connector_remove(connector
);
1044 drm_debugfs_connector_remove(connector
);
1046 EXPORT_SYMBOL(drm_connector_unregister
);
1050 * drm_connector_unplug_all - unregister connector userspace interfaces
1053 * This function unregisters all connector userspace interfaces in sysfs. Should
1054 * be call when the device is disconnected, e.g. from an usb driver's
1055 * ->disconnect callback.
1057 void drm_connector_unplug_all(struct drm_device
*dev
)
1059 struct drm_connector
*connector
;
1061 /* taking the mode config mutex ends up in a clash with sysfs */
1062 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1063 drm_connector_unregister(connector
);
1066 EXPORT_SYMBOL(drm_connector_unplug_all
);
1069 * drm_encoder_init - Init a preallocated encoder
1071 * @encoder: the encoder to init
1072 * @funcs: callbacks for this encoder
1073 * @encoder_type: user visible type of the encoder
1075 * Initialises a preallocated encoder. Encoder should be
1076 * subclassed as part of driver encoder objects.
1079 * Zero on success, error code on failure.
1081 int drm_encoder_init(struct drm_device
*dev
,
1082 struct drm_encoder
*encoder
,
1083 const struct drm_encoder_funcs
*funcs
,
1088 drm_modeset_lock_all(dev
);
1090 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1095 encoder
->encoder_type
= encoder_type
;
1096 encoder
->funcs
= funcs
;
1097 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1098 drm_encoder_enum_list
[encoder_type
].name
,
1100 if (!encoder
->name
) {
1105 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1106 dev
->mode_config
.num_encoder
++;
1110 drm_mode_object_put(dev
, &encoder
->base
);
1113 drm_modeset_unlock_all(dev
);
1117 EXPORT_SYMBOL(drm_encoder_init
);
1120 * drm_encoder_cleanup - cleans up an initialised encoder
1121 * @encoder: encoder to cleanup
1123 * Cleans up the encoder but doesn't free the object.
1125 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1127 struct drm_device
*dev
= encoder
->dev
;
1129 drm_modeset_lock_all(dev
);
1130 drm_mode_object_put(dev
, &encoder
->base
);
1131 kfree(encoder
->name
);
1132 list_del(&encoder
->head
);
1133 dev
->mode_config
.num_encoder
--;
1134 drm_modeset_unlock_all(dev
);
1136 memset(encoder
, 0, sizeof(*encoder
));
1138 EXPORT_SYMBOL(drm_encoder_cleanup
);
1141 * drm_universal_plane_init - Initialize a new universal plane object
1143 * @plane: plane object to init
1144 * @possible_crtcs: bitmask of possible CRTCs
1145 * @funcs: callbacks for the new plane
1146 * @formats: array of supported formats (%DRM_FORMAT_*)
1147 * @format_count: number of elements in @formats
1148 * @type: type of plane (overlay, primary, cursor)
1150 * Initializes a plane object of type @type.
1153 * Zero on success, error code on failure.
1155 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1156 unsigned long possible_crtcs
,
1157 const struct drm_plane_funcs
*funcs
,
1158 const uint32_t *formats
, uint32_t format_count
,
1159 enum drm_plane_type type
)
1161 struct drm_mode_config
*config
= &dev
->mode_config
;
1164 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1168 drm_modeset_lock_init(&plane
->mutex
);
1170 plane
->base
.properties
= &plane
->properties
;
1172 plane
->funcs
= funcs
;
1173 plane
->format_types
= kmalloc_array(format_count
, sizeof(uint32_t),
1175 if (!plane
->format_types
) {
1176 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1177 drm_mode_object_put(dev
, &plane
->base
);
1181 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1182 plane
->format_count
= format_count
;
1183 plane
->possible_crtcs
= possible_crtcs
;
1186 list_add_tail(&plane
->head
, &config
->plane_list
);
1187 config
->num_total_plane
++;
1188 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1189 config
->num_overlay_plane
++;
1191 drm_object_attach_property(&plane
->base
,
1192 config
->plane_type_property
,
1195 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
1196 drm_object_attach_property(&plane
->base
, config
->prop_fb_id
, 0);
1197 drm_object_attach_property(&plane
->base
, config
->prop_crtc_id
, 0);
1198 drm_object_attach_property(&plane
->base
, config
->prop_crtc_x
, 0);
1199 drm_object_attach_property(&plane
->base
, config
->prop_crtc_y
, 0);
1200 drm_object_attach_property(&plane
->base
, config
->prop_crtc_w
, 0);
1201 drm_object_attach_property(&plane
->base
, config
->prop_crtc_h
, 0);
1202 drm_object_attach_property(&plane
->base
, config
->prop_src_x
, 0);
1203 drm_object_attach_property(&plane
->base
, config
->prop_src_y
, 0);
1204 drm_object_attach_property(&plane
->base
, config
->prop_src_w
, 0);
1205 drm_object_attach_property(&plane
->base
, config
->prop_src_h
, 0);
1210 EXPORT_SYMBOL(drm_universal_plane_init
);
1213 * drm_plane_init - Initialize a legacy plane
1215 * @plane: plane object to init
1216 * @possible_crtcs: bitmask of possible CRTCs
1217 * @funcs: callbacks for the new plane
1218 * @formats: array of supported formats (%DRM_FORMAT_*)
1219 * @format_count: number of elements in @formats
1220 * @is_primary: plane type (primary vs overlay)
1222 * Legacy API to initialize a DRM plane.
1224 * New drivers should call drm_universal_plane_init() instead.
1227 * Zero on success, error code on failure.
1229 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1230 unsigned long possible_crtcs
,
1231 const struct drm_plane_funcs
*funcs
,
1232 const uint32_t *formats
, uint32_t format_count
,
1235 enum drm_plane_type type
;
1237 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1238 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1239 formats
, format_count
, type
);
1241 EXPORT_SYMBOL(drm_plane_init
);
1244 * drm_plane_cleanup - Clean up the core plane usage
1245 * @plane: plane to cleanup
1247 * This function cleans up @plane and removes it from the DRM mode setting
1248 * core. Note that the function does *not* free the plane structure itself,
1249 * this is the responsibility of the caller.
1251 void drm_plane_cleanup(struct drm_plane
*plane
)
1253 struct drm_device
*dev
= plane
->dev
;
1255 drm_modeset_lock_all(dev
);
1256 kfree(plane
->format_types
);
1257 drm_mode_object_put(dev
, &plane
->base
);
1259 BUG_ON(list_empty(&plane
->head
));
1261 list_del(&plane
->head
);
1262 dev
->mode_config
.num_total_plane
--;
1263 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1264 dev
->mode_config
.num_overlay_plane
--;
1265 drm_modeset_unlock_all(dev
);
1267 WARN_ON(plane
->state
&& !plane
->funcs
->atomic_destroy_state
);
1268 if (plane
->state
&& plane
->funcs
->atomic_destroy_state
)
1269 plane
->funcs
->atomic_destroy_state(plane
, plane
->state
);
1271 memset(plane
, 0, sizeof(*plane
));
1273 EXPORT_SYMBOL(drm_plane_cleanup
);
1276 * drm_plane_index - find the index of a registered plane
1277 * @plane: plane to find index for
1279 * Given a registered plane, return the index of that CRTC within a DRM
1280 * device's list of planes.
1282 unsigned int drm_plane_index(struct drm_plane
*plane
)
1284 unsigned int index
= 0;
1285 struct drm_plane
*tmp
;
1287 list_for_each_entry(tmp
, &plane
->dev
->mode_config
.plane_list
, head
) {
1296 EXPORT_SYMBOL(drm_plane_index
);
1299 * drm_plane_force_disable - Forcibly disable a plane
1300 * @plane: plane to disable
1302 * Forces the plane to be disabled.
1304 * Used when the plane's current framebuffer is destroyed,
1305 * and when restoring fbdev mode.
1307 void drm_plane_force_disable(struct drm_plane
*plane
)
1314 plane
->old_fb
= plane
->fb
;
1315 ret
= plane
->funcs
->disable_plane(plane
);
1317 DRM_ERROR("failed to disable plane with busy fb\n");
1318 plane
->old_fb
= NULL
;
1321 /* disconnect the plane from the fb and crtc: */
1322 __drm_framebuffer_unreference(plane
->old_fb
);
1323 plane
->old_fb
= NULL
;
1327 EXPORT_SYMBOL(drm_plane_force_disable
);
1329 static int drm_mode_create_standard_properties(struct drm_device
*dev
)
1331 struct drm_property
*prop
;
1334 * Standard properties (apply to all connectors)
1336 prop
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1337 DRM_MODE_PROP_IMMUTABLE
,
1341 dev
->mode_config
.edid_property
= prop
;
1343 prop
= drm_property_create_enum(dev
, 0,
1344 "DPMS", drm_dpms_enum_list
,
1345 ARRAY_SIZE(drm_dpms_enum_list
));
1348 dev
->mode_config
.dpms_property
= prop
;
1350 prop
= drm_property_create(dev
,
1351 DRM_MODE_PROP_BLOB
|
1352 DRM_MODE_PROP_IMMUTABLE
,
1356 dev
->mode_config
.path_property
= prop
;
1358 prop
= drm_property_create(dev
,
1359 DRM_MODE_PROP_BLOB
|
1360 DRM_MODE_PROP_IMMUTABLE
,
1364 dev
->mode_config
.tile_property
= prop
;
1366 prop
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1367 "type", drm_plane_type_enum_list
,
1368 ARRAY_SIZE(drm_plane_type_enum_list
));
1371 dev
->mode_config
.plane_type_property
= prop
;
1373 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1374 "SRC_X", 0, UINT_MAX
);
1377 dev
->mode_config
.prop_src_x
= prop
;
1379 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1380 "SRC_Y", 0, UINT_MAX
);
1383 dev
->mode_config
.prop_src_y
= prop
;
1385 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1386 "SRC_W", 0, UINT_MAX
);
1389 dev
->mode_config
.prop_src_w
= prop
;
1391 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1392 "SRC_H", 0, UINT_MAX
);
1395 dev
->mode_config
.prop_src_h
= prop
;
1397 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1398 "CRTC_X", INT_MIN
, INT_MAX
);
1401 dev
->mode_config
.prop_crtc_x
= prop
;
1403 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1404 "CRTC_Y", INT_MIN
, INT_MAX
);
1407 dev
->mode_config
.prop_crtc_y
= prop
;
1409 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1410 "CRTC_W", 0, INT_MAX
);
1413 dev
->mode_config
.prop_crtc_w
= prop
;
1415 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1416 "CRTC_H", 0, INT_MAX
);
1419 dev
->mode_config
.prop_crtc_h
= prop
;
1421 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1422 "FB_ID", DRM_MODE_OBJECT_FB
);
1425 dev
->mode_config
.prop_fb_id
= prop
;
1427 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1428 "CRTC_ID", DRM_MODE_OBJECT_CRTC
);
1431 dev
->mode_config
.prop_crtc_id
= prop
;
1433 prop
= drm_property_create_bool(dev
, DRM_MODE_PROP_ATOMIC
,
1437 dev
->mode_config
.prop_active
= prop
;
1443 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1446 * Called by a driver the first time a DVI-I connector is made.
1448 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1450 struct drm_property
*dvi_i_selector
;
1451 struct drm_property
*dvi_i_subconnector
;
1453 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1457 drm_property_create_enum(dev
, 0,
1458 "select subconnector",
1459 drm_dvi_i_select_enum_list
,
1460 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1461 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1463 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1465 drm_dvi_i_subconnector_enum_list
,
1466 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1467 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1471 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1474 * drm_create_tv_properties - create TV specific connector properties
1476 * @num_modes: number of different TV formats (modes) supported
1477 * @modes: array of pointers to strings containing name of each format
1479 * Called by a driver's TV initialization routine, this function creates
1480 * the TV specific connector properties for a given device. Caller is
1481 * responsible for allocating a list of format names and passing them to
1484 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1485 unsigned int num_modes
,
1488 struct drm_property
*tv_selector
;
1489 struct drm_property
*tv_subconnector
;
1492 if (dev
->mode_config
.tv_select_subconnector_property
)
1496 * Basic connector properties
1498 tv_selector
= drm_property_create_enum(dev
, 0,
1499 "select subconnector",
1500 drm_tv_select_enum_list
,
1501 ARRAY_SIZE(drm_tv_select_enum_list
));
1502 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1505 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1507 drm_tv_subconnector_enum_list
,
1508 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1509 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1512 * Other, TV specific properties: margins & TV modes.
1514 dev
->mode_config
.tv_left_margin_property
=
1515 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1517 dev
->mode_config
.tv_right_margin_property
=
1518 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1520 dev
->mode_config
.tv_top_margin_property
=
1521 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1523 dev
->mode_config
.tv_bottom_margin_property
=
1524 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1526 dev
->mode_config
.tv_mode_property
=
1527 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1529 for (i
= 0; i
< num_modes
; i
++)
1530 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1533 dev
->mode_config
.tv_brightness_property
=
1534 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1536 dev
->mode_config
.tv_contrast_property
=
1537 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1539 dev
->mode_config
.tv_flicker_reduction_property
=
1540 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1542 dev
->mode_config
.tv_overscan_property
=
1543 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1545 dev
->mode_config
.tv_saturation_property
=
1546 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1548 dev
->mode_config
.tv_hue_property
=
1549 drm_property_create_range(dev
, 0, "hue", 0, 100);
1553 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1556 * drm_mode_create_scaling_mode_property - create scaling mode property
1559 * Called by a driver the first time it's needed, must be attached to desired
1562 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1564 struct drm_property
*scaling_mode
;
1566 if (dev
->mode_config
.scaling_mode_property
)
1570 drm_property_create_enum(dev
, 0, "scaling mode",
1571 drm_scaling_mode_enum_list
,
1572 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1574 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1578 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1581 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1584 * Called by a driver the first time it's needed, must be attached to desired
1588 * Zero on success, negative errno on failure.
1590 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1592 if (dev
->mode_config
.aspect_ratio_property
)
1595 dev
->mode_config
.aspect_ratio_property
=
1596 drm_property_create_enum(dev
, 0, "aspect ratio",
1597 drm_aspect_ratio_enum_list
,
1598 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1600 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1605 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1608 * drm_mode_create_dirty_property - create dirty property
1611 * Called by a driver the first time it's needed, must be attached to desired
1614 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1616 struct drm_property
*dirty_info
;
1618 if (dev
->mode_config
.dirty_info_property
)
1622 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1624 drm_dirty_info_enum_list
,
1625 ARRAY_SIZE(drm_dirty_info_enum_list
));
1626 dev
->mode_config
.dirty_info_property
= dirty_info
;
1630 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1633 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1636 * Create the the suggested x/y offset property for connectors.
1638 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1640 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1643 dev
->mode_config
.suggested_x_property
=
1644 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1646 dev
->mode_config
.suggested_y_property
=
1647 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1649 if (dev
->mode_config
.suggested_x_property
== NULL
||
1650 dev
->mode_config
.suggested_y_property
== NULL
)
1654 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1656 static int drm_mode_group_init(struct drm_device
*dev
, struct drm_mode_group
*group
)
1658 uint32_t total_objects
= 0;
1660 total_objects
+= dev
->mode_config
.num_crtc
;
1661 total_objects
+= dev
->mode_config
.num_connector
;
1662 total_objects
+= dev
->mode_config
.num_encoder
;
1664 group
->id_list
= kcalloc(total_objects
, sizeof(uint32_t), GFP_KERNEL
);
1665 if (!group
->id_list
)
1668 group
->num_crtcs
= 0;
1669 group
->num_connectors
= 0;
1670 group
->num_encoders
= 0;
1674 void drm_mode_group_destroy(struct drm_mode_group
*group
)
1676 kfree(group
->id_list
);
1677 group
->id_list
= NULL
;
1681 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1682 * the drm core's responsibility to set up mode control groups.
1684 int drm_mode_group_init_legacy_group(struct drm_device
*dev
,
1685 struct drm_mode_group
*group
)
1687 struct drm_crtc
*crtc
;
1688 struct drm_encoder
*encoder
;
1689 struct drm_connector
*connector
;
1692 ret
= drm_mode_group_init(dev
, group
);
1696 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
1697 group
->id_list
[group
->num_crtcs
++] = crtc
->base
.id
;
1699 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
1700 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
++] =
1703 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1704 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1705 group
->num_connectors
++] = connector
->base
.id
;
1709 EXPORT_SYMBOL(drm_mode_group_init_legacy_group
);
1711 void drm_reinit_primary_mode_group(struct drm_device
*dev
)
1713 drm_modeset_lock_all(dev
);
1714 drm_mode_group_destroy(&dev
->primary
->mode_group
);
1715 drm_mode_group_init_legacy_group(dev
, &dev
->primary
->mode_group
);
1716 drm_modeset_unlock_all(dev
);
1718 EXPORT_SYMBOL(drm_reinit_primary_mode_group
);
1721 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1722 * @out: drm_mode_modeinfo struct to return to the user
1723 * @in: drm_display_mode to use
1725 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1728 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo
*out
,
1729 const struct drm_display_mode
*in
)
1731 WARN(in
->hdisplay
> USHRT_MAX
|| in
->hsync_start
> USHRT_MAX
||
1732 in
->hsync_end
> USHRT_MAX
|| in
->htotal
> USHRT_MAX
||
1733 in
->hskew
> USHRT_MAX
|| in
->vdisplay
> USHRT_MAX
||
1734 in
->vsync_start
> USHRT_MAX
|| in
->vsync_end
> USHRT_MAX
||
1735 in
->vtotal
> USHRT_MAX
|| in
->vscan
> USHRT_MAX
,
1736 "timing values too large for mode info\n");
1738 out
->clock
= in
->clock
;
1739 out
->hdisplay
= in
->hdisplay
;
1740 out
->hsync_start
= in
->hsync_start
;
1741 out
->hsync_end
= in
->hsync_end
;
1742 out
->htotal
= in
->htotal
;
1743 out
->hskew
= in
->hskew
;
1744 out
->vdisplay
= in
->vdisplay
;
1745 out
->vsync_start
= in
->vsync_start
;
1746 out
->vsync_end
= in
->vsync_end
;
1747 out
->vtotal
= in
->vtotal
;
1748 out
->vscan
= in
->vscan
;
1749 out
->vrefresh
= in
->vrefresh
;
1750 out
->flags
= in
->flags
;
1751 out
->type
= in
->type
;
1752 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1753 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1757 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1758 * @out: drm_display_mode to return to the user
1759 * @in: drm_mode_modeinfo to use
1761 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1765 * Zero on success, negative errno on failure.
1767 static int drm_crtc_convert_umode(struct drm_display_mode
*out
,
1768 const struct drm_mode_modeinfo
*in
)
1770 if (in
->clock
> INT_MAX
|| in
->vrefresh
> INT_MAX
)
1773 if ((in
->flags
& DRM_MODE_FLAG_3D_MASK
) > DRM_MODE_FLAG_3D_MAX
)
1776 out
->clock
= in
->clock
;
1777 out
->hdisplay
= in
->hdisplay
;
1778 out
->hsync_start
= in
->hsync_start
;
1779 out
->hsync_end
= in
->hsync_end
;
1780 out
->htotal
= in
->htotal
;
1781 out
->hskew
= in
->hskew
;
1782 out
->vdisplay
= in
->vdisplay
;
1783 out
->vsync_start
= in
->vsync_start
;
1784 out
->vsync_end
= in
->vsync_end
;
1785 out
->vtotal
= in
->vtotal
;
1786 out
->vscan
= in
->vscan
;
1787 out
->vrefresh
= in
->vrefresh
;
1788 out
->flags
= in
->flags
;
1789 out
->type
= in
->type
;
1790 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1791 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1797 * drm_mode_getresources - get graphics configuration
1798 * @dev: drm device for the ioctl
1799 * @data: data pointer for the ioctl
1800 * @file_priv: drm file for the ioctl call
1802 * Construct a set of configuration description structures and return
1803 * them to the user, including CRTC, connector and framebuffer configuration.
1805 * Called by the user via ioctl.
1808 * Zero on success, negative errno on failure.
1810 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1811 struct drm_file
*file_priv
)
1813 struct drm_mode_card_res
*card_res
= data
;
1814 struct list_head
*lh
;
1815 struct drm_framebuffer
*fb
;
1816 struct drm_connector
*connector
;
1817 struct drm_crtc
*crtc
;
1818 struct drm_encoder
*encoder
;
1820 int connector_count
= 0;
1823 int encoder_count
= 0;
1825 uint32_t __user
*fb_id
;
1826 uint32_t __user
*crtc_id
;
1827 uint32_t __user
*connector_id
;
1828 uint32_t __user
*encoder_id
;
1829 struct drm_mode_group
*mode_group
;
1831 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1835 mutex_lock(&file_priv
->fbs_lock
);
1837 * For the non-control nodes we need to limit the list of resources
1838 * by IDs in the group list for this node
1840 list_for_each(lh
, &file_priv
->fbs
)
1843 /* handle this in 4 parts */
1845 if (card_res
->count_fbs
>= fb_count
) {
1847 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1848 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1849 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1850 mutex_unlock(&file_priv
->fbs_lock
);
1856 card_res
->count_fbs
= fb_count
;
1857 mutex_unlock(&file_priv
->fbs_lock
);
1859 /* mode_config.mutex protects the connector list against e.g. DP MST
1860 * connector hot-adding. CRTC/Plane lists are invariant. */
1861 mutex_lock(&dev
->mode_config
.mutex
);
1862 if (!drm_is_primary_client(file_priv
)) {
1865 list_for_each(lh
, &dev
->mode_config
.crtc_list
)
1868 list_for_each(lh
, &dev
->mode_config
.connector_list
)
1871 list_for_each(lh
, &dev
->mode_config
.encoder_list
)
1875 mode_group
= &file_priv
->master
->minor
->mode_group
;
1876 crtc_count
= mode_group
->num_crtcs
;
1877 connector_count
= mode_group
->num_connectors
;
1878 encoder_count
= mode_group
->num_encoders
;
1881 card_res
->max_height
= dev
->mode_config
.max_height
;
1882 card_res
->min_height
= dev
->mode_config
.min_height
;
1883 card_res
->max_width
= dev
->mode_config
.max_width
;
1884 card_res
->min_width
= dev
->mode_config
.min_width
;
1887 if (card_res
->count_crtcs
>= crtc_count
) {
1889 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1891 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
,
1893 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1894 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1901 for (i
= 0; i
< mode_group
->num_crtcs
; i
++) {
1902 if (put_user(mode_group
->id_list
[i
],
1903 crtc_id
+ copied
)) {
1911 card_res
->count_crtcs
= crtc_count
;
1914 if (card_res
->count_encoders
>= encoder_count
) {
1916 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1918 list_for_each_entry(encoder
,
1919 &dev
->mode_config
.encoder_list
,
1921 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1923 if (put_user(encoder
->base
.id
, encoder_id
+
1931 for (i
= mode_group
->num_crtcs
; i
< mode_group
->num_crtcs
+ mode_group
->num_encoders
; i
++) {
1932 if (put_user(mode_group
->id_list
[i
],
1933 encoder_id
+ copied
)) {
1942 card_res
->count_encoders
= encoder_count
;
1945 if (card_res
->count_connectors
>= connector_count
) {
1947 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1949 list_for_each_entry(connector
,
1950 &dev
->mode_config
.connector_list
,
1952 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1955 if (put_user(connector
->base
.id
,
1956 connector_id
+ copied
)) {
1963 int start
= mode_group
->num_crtcs
+
1964 mode_group
->num_encoders
;
1965 for (i
= start
; i
< start
+ mode_group
->num_connectors
; i
++) {
1966 if (put_user(mode_group
->id_list
[i
],
1967 connector_id
+ copied
)) {
1975 card_res
->count_connectors
= connector_count
;
1977 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1978 card_res
->count_connectors
, card_res
->count_encoders
);
1981 mutex_unlock(&dev
->mode_config
.mutex
);
1986 * drm_mode_getcrtc - get CRTC configuration
1987 * @dev: drm device for the ioctl
1988 * @data: data pointer for the ioctl
1989 * @file_priv: drm file for the ioctl call
1991 * Construct a CRTC configuration structure to return to the user.
1993 * Called by the user via ioctl.
1996 * Zero on success, negative errno on failure.
1998 int drm_mode_getcrtc(struct drm_device
*dev
,
1999 void *data
, struct drm_file
*file_priv
)
2001 struct drm_mode_crtc
*crtc_resp
= data
;
2002 struct drm_crtc
*crtc
;
2004 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2007 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
2011 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
2012 crtc_resp
->x
= crtc
->x
;
2013 crtc_resp
->y
= crtc
->y
;
2014 crtc_resp
->gamma_size
= crtc
->gamma_size
;
2015 if (crtc
->primary
->fb
)
2016 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
2018 crtc_resp
->fb_id
= 0;
2020 if (crtc
->enabled
) {
2022 drm_crtc_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
2023 crtc_resp
->mode_valid
= 1;
2026 crtc_resp
->mode_valid
= 0;
2028 drm_modeset_unlock_crtc(crtc
);
2033 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
2034 const struct drm_file
*file_priv
)
2037 * If user-space hasn't configured the driver to expose the stereo 3D
2038 * modes, don't expose them.
2040 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
2046 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
2048 /* For atomic drivers only state objects are synchronously updated and
2049 * protected by modeset locks, so check those first. */
2050 if (connector
->state
)
2051 return connector
->state
->best_encoder
;
2052 return connector
->encoder
;
2055 /* helper for getconnector and getproperties ioctls */
2056 static int get_properties(struct drm_mode_object
*obj
, bool atomic
,
2057 uint32_t __user
*prop_ptr
, uint64_t __user
*prop_values
,
2058 uint32_t *arg_count_props
)
2063 props_count
= obj
->properties
->count
;
2065 props_count
-= obj
->properties
->atomic_count
;
2067 if ((*arg_count_props
>= props_count
) && props_count
) {
2068 for (i
= 0, copied
= 0; copied
< props_count
; i
++) {
2069 struct drm_property
*prop
= obj
->properties
->properties
[i
];
2072 if ((prop
->flags
& DRM_MODE_PROP_ATOMIC
) && !atomic
)
2075 ret
= drm_object_property_get_value(obj
, prop
, &val
);
2079 if (put_user(prop
->base
.id
, prop_ptr
+ copied
))
2082 if (put_user(val
, prop_values
+ copied
))
2088 *arg_count_props
= props_count
;
2094 * drm_mode_getconnector - get connector configuration
2095 * @dev: drm device for the ioctl
2096 * @data: data pointer for the ioctl
2097 * @file_priv: drm file for the ioctl call
2099 * Construct a connector configuration structure to return to the user.
2101 * Called by the user via ioctl.
2104 * Zero on success, negative errno on failure.
2106 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
2107 struct drm_file
*file_priv
)
2109 struct drm_mode_get_connector
*out_resp
= data
;
2110 struct drm_connector
*connector
;
2111 struct drm_encoder
*encoder
;
2112 struct drm_display_mode
*mode
;
2114 int encoders_count
= 0;
2118 struct drm_mode_modeinfo u_mode
;
2119 struct drm_mode_modeinfo __user
*mode_ptr
;
2120 uint32_t __user
*encoder_ptr
;
2122 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2125 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
2127 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
2129 mutex_lock(&dev
->mode_config
.mutex
);
2131 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
2137 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++)
2138 if (connector
->encoder_ids
[i
] != 0)
2141 if (out_resp
->count_modes
== 0) {
2142 connector
->funcs
->fill_modes(connector
,
2143 dev
->mode_config
.max_width
,
2144 dev
->mode_config
.max_height
);
2147 /* delayed so we get modes regardless of pre-fill_modes state */
2148 list_for_each_entry(mode
, &connector
->modes
, head
)
2149 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2152 out_resp
->connector_id
= connector
->base
.id
;
2153 out_resp
->connector_type
= connector
->connector_type
;
2154 out_resp
->connector_type_id
= connector
->connector_type_id
;
2155 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2156 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2157 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2158 out_resp
->connection
= connector
->status
;
2160 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2161 encoder
= drm_connector_get_encoder(connector
);
2163 out_resp
->encoder_id
= encoder
->base
.id
;
2165 out_resp
->encoder_id
= 0;
2168 * This ioctl is called twice, once to determine how much space is
2169 * needed, and the 2nd time to fill it.
2171 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2173 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2174 list_for_each_entry(mode
, &connector
->modes
, head
) {
2175 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2178 drm_crtc_convert_to_umode(&u_mode
, mode
);
2179 if (copy_to_user(mode_ptr
+ copied
,
2180 &u_mode
, sizeof(u_mode
))) {
2187 out_resp
->count_modes
= mode_count
;
2189 ret
= get_properties(&connector
->base
, file_priv
->atomic
,
2190 (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
),
2191 (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
),
2192 &out_resp
->count_props
);
2196 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2198 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2199 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2200 if (connector
->encoder_ids
[i
] != 0) {
2201 if (put_user(connector
->encoder_ids
[i
],
2202 encoder_ptr
+ copied
)) {
2210 out_resp
->count_encoders
= encoders_count
;
2213 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2214 mutex_unlock(&dev
->mode_config
.mutex
);
2219 static struct drm_crtc
*drm_encoder_get_crtc(struct drm_encoder
*encoder
)
2221 struct drm_connector
*connector
;
2222 struct drm_device
*dev
= encoder
->dev
;
2223 bool uses_atomic
= false;
2225 /* For atomic drivers only state objects are synchronously updated and
2226 * protected by modeset locks, so check those first. */
2227 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
2228 if (!connector
->state
)
2233 if (connector
->state
->best_encoder
!= encoder
)
2236 return connector
->state
->crtc
;
2239 /* Don't return stale data (e.g. pending async disable). */
2243 return encoder
->crtc
;
2247 * drm_mode_getencoder - get encoder configuration
2248 * @dev: drm device for the ioctl
2249 * @data: data pointer for the ioctl
2250 * @file_priv: drm file for the ioctl call
2252 * Construct a encoder configuration structure to return to the user.
2254 * Called by the user via ioctl.
2257 * Zero on success, negative errno on failure.
2259 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2260 struct drm_file
*file_priv
)
2262 struct drm_mode_get_encoder
*enc_resp
= data
;
2263 struct drm_encoder
*encoder
;
2264 struct drm_crtc
*crtc
;
2266 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2269 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2273 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2274 crtc
= drm_encoder_get_crtc(encoder
);
2276 enc_resp
->crtc_id
= crtc
->base
.id
;
2277 else if (encoder
->crtc
)
2278 enc_resp
->crtc_id
= encoder
->crtc
->base
.id
;
2280 enc_resp
->crtc_id
= 0;
2281 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2283 enc_resp
->encoder_type
= encoder
->encoder_type
;
2284 enc_resp
->encoder_id
= encoder
->base
.id
;
2285 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2286 enc_resp
->possible_clones
= encoder
->possible_clones
;
2292 * drm_mode_getplane_res - enumerate all plane resources
2295 * @file_priv: DRM file info
2297 * Construct a list of plane ids to return to the user.
2299 * Called by the user via ioctl.
2302 * Zero on success, negative errno on failure.
2304 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2305 struct drm_file
*file_priv
)
2307 struct drm_mode_get_plane_res
*plane_resp
= data
;
2308 struct drm_mode_config
*config
;
2309 struct drm_plane
*plane
;
2310 uint32_t __user
*plane_ptr
;
2312 unsigned num_planes
;
2314 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2317 config
= &dev
->mode_config
;
2319 if (file_priv
->universal_planes
)
2320 num_planes
= config
->num_total_plane
;
2322 num_planes
= config
->num_overlay_plane
;
2325 * This ioctl is called twice, once to determine how much space is
2326 * needed, and the 2nd time to fill it.
2329 (plane_resp
->count_planes
>= num_planes
)) {
2330 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2332 /* Plane lists are invariant, no locking needed. */
2333 list_for_each_entry(plane
, &config
->plane_list
, head
) {
2335 * Unless userspace set the 'universal planes'
2336 * capability bit, only advertise overlays.
2338 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2339 !file_priv
->universal_planes
)
2342 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2347 plane_resp
->count_planes
= num_planes
;
2353 * drm_mode_getplane - get plane configuration
2356 * @file_priv: DRM file info
2358 * Construct a plane configuration structure to return to the user.
2360 * Called by the user via ioctl.
2363 * Zero on success, negative errno on failure.
2365 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2366 struct drm_file
*file_priv
)
2368 struct drm_mode_get_plane
*plane_resp
= data
;
2369 struct drm_plane
*plane
;
2370 uint32_t __user
*format_ptr
;
2372 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2375 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2379 drm_modeset_lock(&plane
->mutex
, NULL
);
2381 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2383 plane_resp
->crtc_id
= 0;
2386 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2388 plane_resp
->fb_id
= 0;
2389 drm_modeset_unlock(&plane
->mutex
);
2391 plane_resp
->plane_id
= plane
->base
.id
;
2392 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2393 plane_resp
->gamma_size
= 0;
2396 * This ioctl is called twice, once to determine how much space is
2397 * needed, and the 2nd time to fill it.
2399 if (plane
->format_count
&&
2400 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2401 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2402 if (copy_to_user(format_ptr
,
2403 plane
->format_types
,
2404 sizeof(uint32_t) * plane
->format_count
)) {
2408 plane_resp
->count_format_types
= plane
->format_count
;
2414 * setplane_internal - setplane handler for internal callers
2416 * Note that we assume an extra reference has already been taken on fb. If the
2417 * update fails, this reference will be dropped before return; if it succeeds,
2418 * the previous framebuffer (if any) will be unreferenced instead.
2420 * src_{x,y,w,h} are provided in 16.16 fixed point format
2422 static int __setplane_internal(struct drm_plane
*plane
,
2423 struct drm_crtc
*crtc
,
2424 struct drm_framebuffer
*fb
,
2425 int32_t crtc_x
, int32_t crtc_y
,
2426 uint32_t crtc_w
, uint32_t crtc_h
,
2427 /* src_{x,y,w,h} values are 16.16 fixed point */
2428 uint32_t src_x
, uint32_t src_y
,
2429 uint32_t src_w
, uint32_t src_h
)
2432 unsigned int fb_width
, fb_height
;
2435 /* No fb means shut it down */
2437 plane
->old_fb
= plane
->fb
;
2438 ret
= plane
->funcs
->disable_plane(plane
);
2443 plane
->old_fb
= NULL
;
2448 /* Check whether this plane is usable on this CRTC */
2449 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2450 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2455 /* Check whether this plane supports the fb pixel format. */
2456 for (i
= 0; i
< plane
->format_count
; i
++)
2457 if (fb
->pixel_format
== plane
->format_types
[i
])
2459 if (i
== plane
->format_count
) {
2460 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2461 drm_get_format_name(fb
->pixel_format
));
2466 fb_width
= fb
->width
<< 16;
2467 fb_height
= fb
->height
<< 16;
2469 /* Make sure source coordinates are inside the fb. */
2470 if (src_w
> fb_width
||
2471 src_x
> fb_width
- src_w
||
2472 src_h
> fb_height
||
2473 src_y
> fb_height
- src_h
) {
2474 DRM_DEBUG_KMS("Invalid source coordinates "
2475 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2476 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2477 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2478 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2479 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2484 plane
->old_fb
= plane
->fb
;
2485 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2486 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2487 src_x
, src_y
, src_w
, src_h
);
2493 plane
->old_fb
= NULL
;
2498 drm_framebuffer_unreference(fb
);
2500 drm_framebuffer_unreference(plane
->old_fb
);
2501 plane
->old_fb
= NULL
;
2506 static int setplane_internal(struct drm_plane
*plane
,
2507 struct drm_crtc
*crtc
,
2508 struct drm_framebuffer
*fb
,
2509 int32_t crtc_x
, int32_t crtc_y
,
2510 uint32_t crtc_w
, uint32_t crtc_h
,
2511 /* src_{x,y,w,h} values are 16.16 fixed point */
2512 uint32_t src_x
, uint32_t src_y
,
2513 uint32_t src_w
, uint32_t src_h
)
2517 drm_modeset_lock_all(plane
->dev
);
2518 ret
= __setplane_internal(plane
, crtc
, fb
,
2519 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2520 src_x
, src_y
, src_w
, src_h
);
2521 drm_modeset_unlock_all(plane
->dev
);
2527 * drm_mode_setplane - configure a plane's configuration
2529 * @data: ioctl data*
2530 * @file_priv: DRM file info
2532 * Set plane configuration, including placement, fb, scaling, and other factors.
2533 * Or pass a NULL fb to disable (planes may be disabled without providing a
2537 * Zero on success, negative errno on failure.
2539 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2540 struct drm_file
*file_priv
)
2542 struct drm_mode_set_plane
*plane_req
= data
;
2543 struct drm_plane
*plane
;
2544 struct drm_crtc
*crtc
= NULL
;
2545 struct drm_framebuffer
*fb
= NULL
;
2547 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2550 /* Give drivers some help against integer overflows */
2551 if (plane_req
->crtc_w
> INT_MAX
||
2552 plane_req
->crtc_x
> INT_MAX
- (int32_t) plane_req
->crtc_w
||
2553 plane_req
->crtc_h
> INT_MAX
||
2554 plane_req
->crtc_y
> INT_MAX
- (int32_t) plane_req
->crtc_h
) {
2555 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2556 plane_req
->crtc_w
, plane_req
->crtc_h
,
2557 plane_req
->crtc_x
, plane_req
->crtc_y
);
2562 * First, find the plane, crtc, and fb objects. If not available,
2563 * we don't bother to call the driver.
2565 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
2567 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2568 plane_req
->plane_id
);
2572 if (plane_req
->fb_id
) {
2573 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2575 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2580 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
2582 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2583 plane_req
->crtc_id
);
2589 * setplane_internal will take care of deref'ing either the old or new
2590 * framebuffer depending on success.
2592 return setplane_internal(plane
, crtc
, fb
,
2593 plane_req
->crtc_x
, plane_req
->crtc_y
,
2594 plane_req
->crtc_w
, plane_req
->crtc_h
,
2595 plane_req
->src_x
, plane_req
->src_y
,
2596 plane_req
->src_w
, plane_req
->src_h
);
2600 * drm_mode_set_config_internal - helper to call ->set_config
2601 * @set: modeset config to set
2603 * This is a little helper to wrap internal calls to the ->set_config driver
2604 * interface. The only thing it adds is correct refcounting dance.
2607 * Zero on success, negative errno on failure.
2609 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2611 struct drm_crtc
*crtc
= set
->crtc
;
2612 struct drm_framebuffer
*fb
;
2613 struct drm_crtc
*tmp
;
2617 * NOTE: ->set_config can also disable other crtcs (if we steal all
2618 * connectors from it), hence we need to refcount the fbs across all
2619 * crtcs. Atomic modeset will have saner semantics ...
2621 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
)
2622 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2626 ret
= crtc
->funcs
->set_config(set
);
2628 crtc
->primary
->crtc
= crtc
;
2629 crtc
->primary
->fb
= fb
;
2632 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
2633 if (tmp
->primary
->fb
)
2634 drm_framebuffer_reference(tmp
->primary
->fb
);
2635 if (tmp
->primary
->old_fb
)
2636 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2637 tmp
->primary
->old_fb
= NULL
;
2642 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2645 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2646 * @mode: mode to query
2647 * @hdisplay: hdisplay value to fill in
2648 * @vdisplay: vdisplay value to fill in
2650 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2651 * the appropriate layout.
2653 void drm_crtc_get_hv_timing(const struct drm_display_mode
*mode
,
2654 int *hdisplay
, int *vdisplay
)
2656 struct drm_display_mode adjusted
;
2658 drm_mode_copy(&adjusted
, mode
);
2659 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE_ONLY
);
2660 *hdisplay
= adjusted
.crtc_hdisplay
;
2661 *vdisplay
= adjusted
.crtc_vdisplay
;
2663 EXPORT_SYMBOL(drm_crtc_get_hv_timing
);
2666 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2668 * @crtc: CRTC that framebuffer will be displayed on
2671 * @mode: mode that framebuffer will be displayed under
2672 * @fb: framebuffer to check size of
2674 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2676 const struct drm_display_mode
*mode
,
2677 const struct drm_framebuffer
*fb
)
2680 int hdisplay
, vdisplay
;
2682 drm_crtc_get_hv_timing(mode
, &hdisplay
, &vdisplay
);
2684 if (crtc
->invert_dimensions
)
2685 swap(hdisplay
, vdisplay
);
2687 if (hdisplay
> fb
->width
||
2688 vdisplay
> fb
->height
||
2689 x
> fb
->width
- hdisplay
||
2690 y
> fb
->height
- vdisplay
) {
2691 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2692 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2693 crtc
->invert_dimensions
? " (inverted)" : "");
2699 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2702 * drm_mode_setcrtc - set CRTC configuration
2703 * @dev: drm device for the ioctl
2704 * @data: data pointer for the ioctl
2705 * @file_priv: drm file for the ioctl call
2707 * Build a new CRTC configuration based on user request.
2709 * Called by the user via ioctl.
2712 * Zero on success, negative errno on failure.
2714 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2715 struct drm_file
*file_priv
)
2717 struct drm_mode_config
*config
= &dev
->mode_config
;
2718 struct drm_mode_crtc
*crtc_req
= data
;
2719 struct drm_crtc
*crtc
;
2720 struct drm_connector
**connector_set
= NULL
, *connector
;
2721 struct drm_framebuffer
*fb
= NULL
;
2722 struct drm_display_mode
*mode
= NULL
;
2723 struct drm_mode_set set
;
2724 uint32_t __user
*set_connectors_ptr
;
2728 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2731 /* For some reason crtc x/y offsets are signed internally. */
2732 if (crtc_req
->x
> INT_MAX
|| crtc_req
->y
> INT_MAX
)
2735 drm_modeset_lock_all(dev
);
2736 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2738 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2742 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2744 if (crtc_req
->mode_valid
) {
2745 /* If we have a mode we need a framebuffer. */
2746 /* If we pass -1, set the mode with the currently bound fb */
2747 if (crtc_req
->fb_id
== -1) {
2748 if (!crtc
->primary
->fb
) {
2749 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2753 fb
= crtc
->primary
->fb
;
2754 /* Make refcounting symmetric with the lookup path. */
2755 drm_framebuffer_reference(fb
);
2757 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2759 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2766 mode
= drm_mode_create(dev
);
2772 ret
= drm_crtc_convert_umode(mode
, &crtc_req
->mode
);
2774 DRM_DEBUG_KMS("Invalid mode\n");
2778 mode
->status
= drm_mode_validate_basic(mode
);
2779 if (mode
->status
!= MODE_OK
) {
2784 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2786 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2793 if (crtc_req
->count_connectors
== 0 && mode
) {
2794 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2799 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2800 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2801 crtc_req
->count_connectors
);
2806 if (crtc_req
->count_connectors
> 0) {
2809 /* Avoid unbounded kernel memory allocation */
2810 if (crtc_req
->count_connectors
> config
->num_connector
) {
2815 connector_set
= kmalloc_array(crtc_req
->count_connectors
,
2816 sizeof(struct drm_connector
*),
2818 if (!connector_set
) {
2823 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2824 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2825 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2830 connector
= drm_connector_find(dev
, out_id
);
2832 DRM_DEBUG_KMS("Connector id %d unknown\n",
2837 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2841 connector_set
[i
] = connector
;
2846 set
.x
= crtc_req
->x
;
2847 set
.y
= crtc_req
->y
;
2849 set
.connectors
= connector_set
;
2850 set
.num_connectors
= crtc_req
->count_connectors
;
2852 ret
= drm_mode_set_config_internal(&set
);
2856 drm_framebuffer_unreference(fb
);
2858 kfree(connector_set
);
2859 drm_mode_destroy(dev
, mode
);
2860 drm_modeset_unlock_all(dev
);
2865 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2866 * universal plane handler call
2867 * @crtc: crtc to update cursor for
2868 * @req: data pointer for the ioctl
2869 * @file_priv: drm file for the ioctl call
2871 * Legacy cursor ioctl's work directly with driver buffer handles. To
2872 * translate legacy ioctl calls into universal plane handler calls, we need to
2873 * wrap the native buffer handle in a drm_framebuffer.
2875 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2876 * buffer with a pitch of 4*width; the universal plane interface should be used
2877 * directly in cases where the hardware can support other buffer settings and
2878 * userspace wants to make use of these capabilities.
2881 * Zero on success, negative errno on failure.
2883 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2884 struct drm_mode_cursor2
*req
,
2885 struct drm_file
*file_priv
)
2887 struct drm_device
*dev
= crtc
->dev
;
2888 struct drm_framebuffer
*fb
= NULL
;
2889 struct drm_mode_fb_cmd2 fbreq
= {
2890 .width
= req
->width
,
2891 .height
= req
->height
,
2892 .pixel_format
= DRM_FORMAT_ARGB8888
,
2893 .pitches
= { req
->width
* 4 },
2894 .handles
= { req
->handle
},
2896 int32_t crtc_x
, crtc_y
;
2897 uint32_t crtc_w
= 0, crtc_h
= 0;
2898 uint32_t src_w
= 0, src_h
= 0;
2901 BUG_ON(!crtc
->cursor
);
2902 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2905 * Obtain fb we'll be using (either new or existing) and take an extra
2906 * reference to it if fb != null. setplane will take care of dropping
2907 * the reference if the plane update fails.
2909 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2911 fb
= add_framebuffer_internal(dev
, &fbreq
, file_priv
);
2913 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2917 drm_framebuffer_reference(fb
);
2922 fb
= crtc
->cursor
->fb
;
2924 drm_framebuffer_reference(fb
);
2927 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2931 crtc_x
= crtc
->cursor_x
;
2932 crtc_y
= crtc
->cursor_y
;
2937 crtc_h
= fb
->height
;
2938 src_w
= fb
->width
<< 16;
2939 src_h
= fb
->height
<< 16;
2943 * setplane_internal will take care of deref'ing either the old or new
2944 * framebuffer depending on success.
2946 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2947 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2948 0, 0, src_w
, src_h
);
2950 /* Update successful; save new cursor position, if necessary */
2951 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2952 crtc
->cursor_x
= req
->x
;
2953 crtc
->cursor_y
= req
->y
;
2959 static int drm_mode_cursor_common(struct drm_device
*dev
,
2960 struct drm_mode_cursor2
*req
,
2961 struct drm_file
*file_priv
)
2963 struct drm_crtc
*crtc
;
2966 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2969 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2972 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2974 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2979 * If this crtc has a universal cursor plane, call that plane's update
2980 * handler rather than using legacy cursor handlers.
2982 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
2984 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2988 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2989 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2993 /* Turns off the cursor if handle is 0 */
2994 if (crtc
->funcs
->cursor_set2
)
2995 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2996 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2998 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2999 req
->width
, req
->height
);
3002 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
3003 if (crtc
->funcs
->cursor_move
) {
3004 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
3011 drm_modeset_unlock_crtc(crtc
);
3019 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3020 * @dev: drm device for the ioctl
3021 * @data: data pointer for the ioctl
3022 * @file_priv: drm file for the ioctl call
3024 * Set the cursor configuration based on user request.
3026 * Called by the user via ioctl.
3029 * Zero on success, negative errno on failure.
3031 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
3032 void *data
, struct drm_file
*file_priv
)
3034 struct drm_mode_cursor
*req
= data
;
3035 struct drm_mode_cursor2 new_req
;
3037 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
3038 new_req
.hot_x
= new_req
.hot_y
= 0;
3040 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
3044 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3045 * @dev: drm device for the ioctl
3046 * @data: data pointer for the ioctl
3047 * @file_priv: drm file for the ioctl call
3049 * Set the cursor configuration based on user request. This implements the 2nd
3050 * version of the cursor ioctl, which allows userspace to additionally specify
3051 * the hotspot of the pointer.
3053 * Called by the user via ioctl.
3056 * Zero on success, negative errno on failure.
3058 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
3059 void *data
, struct drm_file
*file_priv
)
3061 struct drm_mode_cursor2
*req
= data
;
3063 return drm_mode_cursor_common(dev
, req
, file_priv
);
3067 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3068 * @bpp: bits per pixels
3069 * @depth: bit depth per pixel
3071 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3072 * Useful in fbdev emulation code, since that deals in those values.
3074 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
3080 fmt
= DRM_FORMAT_C8
;
3084 fmt
= DRM_FORMAT_XRGB1555
;
3086 fmt
= DRM_FORMAT_RGB565
;
3089 fmt
= DRM_FORMAT_RGB888
;
3093 fmt
= DRM_FORMAT_XRGB8888
;
3094 else if (depth
== 30)
3095 fmt
= DRM_FORMAT_XRGB2101010
;
3097 fmt
= DRM_FORMAT_ARGB8888
;
3100 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3101 fmt
= DRM_FORMAT_XRGB8888
;
3107 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
3110 * drm_mode_addfb - add an FB to the graphics configuration
3111 * @dev: drm device for the ioctl
3112 * @data: data pointer for the ioctl
3113 * @file_priv: drm file for the ioctl call
3115 * Add a new FB to the specified CRTC, given a user request. This is the
3116 * original addfb ioctl which only supported RGB formats.
3118 * Called by the user via ioctl.
3121 * Zero on success, negative errno on failure.
3123 int drm_mode_addfb(struct drm_device
*dev
,
3124 void *data
, struct drm_file
*file_priv
)
3126 struct drm_mode_fb_cmd
*or = data
;
3127 struct drm_mode_fb_cmd2 r
= {};
3130 /* convert to new format and call new ioctl */
3131 r
.fb_id
= or->fb_id
;
3132 r
.width
= or->width
;
3133 r
.height
= or->height
;
3134 r
.pitches
[0] = or->pitch
;
3135 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
3136 r
.handles
[0] = or->handle
;
3138 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
3142 or->fb_id
= r
.fb_id
;
3147 static int format_check(const struct drm_mode_fb_cmd2
*r
)
3149 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3153 case DRM_FORMAT_RGB332
:
3154 case DRM_FORMAT_BGR233
:
3155 case DRM_FORMAT_XRGB4444
:
3156 case DRM_FORMAT_XBGR4444
:
3157 case DRM_FORMAT_RGBX4444
:
3158 case DRM_FORMAT_BGRX4444
:
3159 case DRM_FORMAT_ARGB4444
:
3160 case DRM_FORMAT_ABGR4444
:
3161 case DRM_FORMAT_RGBA4444
:
3162 case DRM_FORMAT_BGRA4444
:
3163 case DRM_FORMAT_XRGB1555
:
3164 case DRM_FORMAT_XBGR1555
:
3165 case DRM_FORMAT_RGBX5551
:
3166 case DRM_FORMAT_BGRX5551
:
3167 case DRM_FORMAT_ARGB1555
:
3168 case DRM_FORMAT_ABGR1555
:
3169 case DRM_FORMAT_RGBA5551
:
3170 case DRM_FORMAT_BGRA5551
:
3171 case DRM_FORMAT_RGB565
:
3172 case DRM_FORMAT_BGR565
:
3173 case DRM_FORMAT_RGB888
:
3174 case DRM_FORMAT_BGR888
:
3175 case DRM_FORMAT_XRGB8888
:
3176 case DRM_FORMAT_XBGR8888
:
3177 case DRM_FORMAT_RGBX8888
:
3178 case DRM_FORMAT_BGRX8888
:
3179 case DRM_FORMAT_ARGB8888
:
3180 case DRM_FORMAT_ABGR8888
:
3181 case DRM_FORMAT_RGBA8888
:
3182 case DRM_FORMAT_BGRA8888
:
3183 case DRM_FORMAT_XRGB2101010
:
3184 case DRM_FORMAT_XBGR2101010
:
3185 case DRM_FORMAT_RGBX1010102
:
3186 case DRM_FORMAT_BGRX1010102
:
3187 case DRM_FORMAT_ARGB2101010
:
3188 case DRM_FORMAT_ABGR2101010
:
3189 case DRM_FORMAT_RGBA1010102
:
3190 case DRM_FORMAT_BGRA1010102
:
3191 case DRM_FORMAT_YUYV
:
3192 case DRM_FORMAT_YVYU
:
3193 case DRM_FORMAT_UYVY
:
3194 case DRM_FORMAT_VYUY
:
3195 case DRM_FORMAT_AYUV
:
3196 case DRM_FORMAT_NV12
:
3197 case DRM_FORMAT_NV21
:
3198 case DRM_FORMAT_NV16
:
3199 case DRM_FORMAT_NV61
:
3200 case DRM_FORMAT_NV24
:
3201 case DRM_FORMAT_NV42
:
3202 case DRM_FORMAT_YUV410
:
3203 case DRM_FORMAT_YVU410
:
3204 case DRM_FORMAT_YUV411
:
3205 case DRM_FORMAT_YVU411
:
3206 case DRM_FORMAT_YUV420
:
3207 case DRM_FORMAT_YVU420
:
3208 case DRM_FORMAT_YUV422
:
3209 case DRM_FORMAT_YVU422
:
3210 case DRM_FORMAT_YUV444
:
3211 case DRM_FORMAT_YVU444
:
3214 DRM_DEBUG_KMS("invalid pixel format %s\n",
3215 drm_get_format_name(r
->pixel_format
));
3220 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3222 int ret
, hsub
, vsub
, num_planes
, i
;
3224 ret
= format_check(r
);
3226 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3227 drm_get_format_name(r
->pixel_format
));
3231 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3232 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3233 num_planes
= drm_format_num_planes(r
->pixel_format
);
3235 if (r
->width
== 0 || r
->width
% hsub
) {
3236 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3240 if (r
->height
== 0 || r
->height
% vsub
) {
3241 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3245 for (i
= 0; i
< num_planes
; i
++) {
3246 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3247 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3248 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3250 if (!r
->handles
[i
]) {
3251 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3255 if ((uint64_t) width
* cpp
> UINT_MAX
)
3258 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3261 if (r
->pitches
[i
] < width
* cpp
) {
3262 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3270 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
3271 struct drm_mode_fb_cmd2
*r
,
3272 struct drm_file
*file_priv
)
3274 struct drm_mode_config
*config
= &dev
->mode_config
;
3275 struct drm_framebuffer
*fb
;
3278 if (r
->flags
& ~DRM_MODE_FB_INTERLACED
) {
3279 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3280 return ERR_PTR(-EINVAL
);
3283 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3284 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3285 r
->width
, config
->min_width
, config
->max_width
);
3286 return ERR_PTR(-EINVAL
);
3288 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3289 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3290 r
->height
, config
->min_height
, config
->max_height
);
3291 return ERR_PTR(-EINVAL
);
3294 ret
= framebuffer_check(r
);
3296 return ERR_PTR(ret
);
3298 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3300 DRM_DEBUG_KMS("could not create framebuffer\n");
3304 mutex_lock(&file_priv
->fbs_lock
);
3305 r
->fb_id
= fb
->base
.id
;
3306 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3307 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3308 mutex_unlock(&file_priv
->fbs_lock
);
3314 * drm_mode_addfb2 - add an FB to the graphics configuration
3315 * @dev: drm device for the ioctl
3316 * @data: data pointer for the ioctl
3317 * @file_priv: drm file for the ioctl call
3319 * Add a new FB to the specified CRTC, given a user request with format. This is
3320 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3321 * and uses fourcc codes as pixel format specifiers.
3323 * Called by the user via ioctl.
3326 * Zero on success, negative errno on failure.
3328 int drm_mode_addfb2(struct drm_device
*dev
,
3329 void *data
, struct drm_file
*file_priv
)
3331 struct drm_framebuffer
*fb
;
3333 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3336 fb
= add_framebuffer_internal(dev
, data
, file_priv
);
3344 * drm_mode_rmfb - remove an FB from the configuration
3345 * @dev: drm device for the ioctl
3346 * @data: data pointer for the ioctl
3347 * @file_priv: drm file for the ioctl call
3349 * Remove the FB specified by the user.
3351 * Called by the user via ioctl.
3354 * Zero on success, negative errno on failure.
3356 int drm_mode_rmfb(struct drm_device
*dev
,
3357 void *data
, struct drm_file
*file_priv
)
3359 struct drm_framebuffer
*fb
= NULL
;
3360 struct drm_framebuffer
*fbl
= NULL
;
3361 uint32_t *id
= data
;
3364 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3367 mutex_lock(&file_priv
->fbs_lock
);
3368 mutex_lock(&dev
->mode_config
.fb_lock
);
3369 fb
= __drm_framebuffer_lookup(dev
, *id
);
3373 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3379 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3380 __drm_framebuffer_unregister(dev
, fb
);
3382 list_del_init(&fb
->filp_head
);
3383 mutex_unlock(&dev
->mode_config
.fb_lock
);
3384 mutex_unlock(&file_priv
->fbs_lock
);
3386 drm_framebuffer_remove(fb
);
3391 mutex_unlock(&dev
->mode_config
.fb_lock
);
3392 mutex_unlock(&file_priv
->fbs_lock
);
3398 * drm_mode_getfb - get FB info
3399 * @dev: drm device for the ioctl
3400 * @data: data pointer for the ioctl
3401 * @file_priv: drm file for the ioctl call
3403 * Lookup the FB given its ID and return info about it.
3405 * Called by the user via ioctl.
3408 * Zero on success, negative errno on failure.
3410 int drm_mode_getfb(struct drm_device
*dev
,
3411 void *data
, struct drm_file
*file_priv
)
3413 struct drm_mode_fb_cmd
*r
= data
;
3414 struct drm_framebuffer
*fb
;
3417 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3420 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3424 r
->height
= fb
->height
;
3425 r
->width
= fb
->width
;
3426 r
->depth
= fb
->depth
;
3427 r
->bpp
= fb
->bits_per_pixel
;
3428 r
->pitch
= fb
->pitches
[0];
3429 if (fb
->funcs
->create_handle
) {
3430 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3431 drm_is_control_client(file_priv
)) {
3432 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3435 /* GET_FB() is an unprivileged ioctl so we must not
3436 * return a buffer-handle to non-master processes! For
3437 * backwards-compatibility reasons, we cannot make
3438 * GET_FB() privileged, so just return an invalid handle
3439 * for non-masters. */
3447 drm_framebuffer_unreference(fb
);
3453 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3454 * @dev: drm device for the ioctl
3455 * @data: data pointer for the ioctl
3456 * @file_priv: drm file for the ioctl call
3458 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3459 * rectangle list. Generic userspace which does frontbuffer rendering must call
3460 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3461 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3463 * Modesetting drivers which always update the frontbuffer do not need to
3464 * implement the corresponding ->dirty framebuffer callback.
3466 * Called by the user via ioctl.
3469 * Zero on success, negative errno on failure.
3471 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3472 void *data
, struct drm_file
*file_priv
)
3474 struct drm_clip_rect __user
*clips_ptr
;
3475 struct drm_clip_rect
*clips
= NULL
;
3476 struct drm_mode_fb_dirty_cmd
*r
= data
;
3477 struct drm_framebuffer
*fb
;
3482 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3485 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3489 num_clips
= r
->num_clips
;
3490 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3492 if (!num_clips
!= !clips_ptr
) {
3497 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3499 /* If userspace annotates copy, clips must come in pairs */
3500 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3505 if (num_clips
&& clips_ptr
) {
3506 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3510 clips
= kcalloc(num_clips
, sizeof(*clips
), GFP_KERNEL
);
3516 ret
= copy_from_user(clips
, clips_ptr
,
3517 num_clips
* sizeof(*clips
));
3524 if (fb
->funcs
->dirty
) {
3525 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3534 drm_framebuffer_unreference(fb
);
3541 * drm_fb_release - remove and free the FBs on this file
3542 * @priv: drm file for the ioctl
3544 * Destroy all the FBs associated with @filp.
3546 * Called by the user via ioctl.
3549 * Zero on success, negative errno on failure.
3551 void drm_fb_release(struct drm_file
*priv
)
3553 struct drm_device
*dev
= priv
->minor
->dev
;
3554 struct drm_framebuffer
*fb
, *tfb
;
3557 * When the file gets released that means no one else can access the fb
3558 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3559 * avoid upsetting lockdep since the universal cursor code adds a
3560 * framebuffer while holding mutex locks.
3562 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3563 * locks is impossible here since no one else but this function can get
3566 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3568 mutex_lock(&dev
->mode_config
.fb_lock
);
3569 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3570 __drm_framebuffer_unregister(dev
, fb
);
3571 mutex_unlock(&dev
->mode_config
.fb_lock
);
3573 list_del_init(&fb
->filp_head
);
3575 /* This will also drop the fpriv->fbs reference. */
3576 drm_framebuffer_remove(fb
);
3581 * drm_property_create - create a new property type
3583 * @flags: flags specifying the property type
3584 * @name: name of the property
3585 * @num_values: number of pre-defined values
3587 * This creates a new generic drm property which can then be attached to a drm
3588 * object with drm_object_attach_property. The returned property object must be
3589 * freed with drm_property_destroy.
3591 * Note that the DRM core keeps a per-device list of properties and that, if
3592 * drm_mode_config_cleanup() is called, it will destroy all properties created
3596 * A pointer to the newly created property on success, NULL on failure.
3598 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3599 const char *name
, int num_values
)
3601 struct drm_property
*property
= NULL
;
3604 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3608 property
->dev
= dev
;
3611 property
->values
= kcalloc(num_values
, sizeof(uint64_t),
3613 if (!property
->values
)
3617 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3621 property
->flags
= flags
;
3622 property
->num_values
= num_values
;
3623 INIT_LIST_HEAD(&property
->enum_list
);
3626 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3627 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3630 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3632 WARN_ON(!drm_property_type_valid(property
));
3636 kfree(property
->values
);
3640 EXPORT_SYMBOL(drm_property_create
);
3643 * drm_property_create_enum - create a new enumeration property type
3645 * @flags: flags specifying the property type
3646 * @name: name of the property
3647 * @props: enumeration lists with property values
3648 * @num_values: number of pre-defined values
3650 * This creates a new generic drm property which can then be attached to a drm
3651 * object with drm_object_attach_property. The returned property object must be
3652 * freed with drm_property_destroy.
3654 * Userspace is only allowed to set one of the predefined values for enumeration
3658 * A pointer to the newly created property on success, NULL on failure.
3660 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3662 const struct drm_prop_enum_list
*props
,
3665 struct drm_property
*property
;
3668 flags
|= DRM_MODE_PROP_ENUM
;
3670 property
= drm_property_create(dev
, flags
, name
, num_values
);
3674 for (i
= 0; i
< num_values
; i
++) {
3675 ret
= drm_property_add_enum(property
, i
,
3679 drm_property_destroy(dev
, property
);
3686 EXPORT_SYMBOL(drm_property_create_enum
);
3689 * drm_property_create_bitmask - create a new bitmask property type
3691 * @flags: flags specifying the property type
3692 * @name: name of the property
3693 * @props: enumeration lists with property bitflags
3694 * @num_props: size of the @props array
3695 * @supported_bits: bitmask of all supported enumeration values
3697 * This creates a new bitmask drm property which can then be attached to a drm
3698 * object with drm_object_attach_property. The returned property object must be
3699 * freed with drm_property_destroy.
3701 * Compared to plain enumeration properties userspace is allowed to set any
3702 * or'ed together combination of the predefined property bitflag values
3705 * A pointer to the newly created property on success, NULL on failure.
3707 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3708 int flags
, const char *name
,
3709 const struct drm_prop_enum_list
*props
,
3711 uint64_t supported_bits
)
3713 struct drm_property
*property
;
3714 int i
, ret
, index
= 0;
3715 int num_values
= hweight64(supported_bits
);
3717 flags
|= DRM_MODE_PROP_BITMASK
;
3719 property
= drm_property_create(dev
, flags
, name
, num_values
);
3722 for (i
= 0; i
< num_props
; i
++) {
3723 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3726 if (WARN_ON(index
>= num_values
)) {
3727 drm_property_destroy(dev
, property
);
3731 ret
= drm_property_add_enum(property
, index
++,
3735 drm_property_destroy(dev
, property
);
3742 EXPORT_SYMBOL(drm_property_create_bitmask
);
3744 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3745 int flags
, const char *name
,
3746 uint64_t min
, uint64_t max
)
3748 struct drm_property
*property
;
3750 property
= drm_property_create(dev
, flags
, name
, 2);
3754 property
->values
[0] = min
;
3755 property
->values
[1] = max
;
3761 * drm_property_create_range - create a new unsigned ranged property type
3763 * @flags: flags specifying the property type
3764 * @name: name of the property
3765 * @min: minimum value of the property
3766 * @max: maximum value of the property
3768 * This creates a new generic drm property which can then be attached to a drm
3769 * object with drm_object_attach_property. The returned property object must be
3770 * freed with drm_property_destroy.
3772 * Userspace is allowed to set any unsigned integer value in the (min, max)
3776 * A pointer to the newly created property on success, NULL on failure.
3778 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3780 uint64_t min
, uint64_t max
)
3782 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3785 EXPORT_SYMBOL(drm_property_create_range
);
3788 * drm_property_create_signed_range - create a new signed ranged property type
3790 * @flags: flags specifying the property type
3791 * @name: name of the property
3792 * @min: minimum value of the property
3793 * @max: maximum value of the property
3795 * This creates a new generic drm property which can then be attached to a drm
3796 * object with drm_object_attach_property. The returned property object must be
3797 * freed with drm_property_destroy.
3799 * Userspace is allowed to set any signed integer value in the (min, max)
3803 * A pointer to the newly created property on success, NULL on failure.
3805 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3806 int flags
, const char *name
,
3807 int64_t min
, int64_t max
)
3809 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3810 name
, I642U64(min
), I642U64(max
));
3812 EXPORT_SYMBOL(drm_property_create_signed_range
);
3815 * drm_property_create_object - create a new object property type
3817 * @flags: flags specifying the property type
3818 * @name: name of the property
3819 * @type: object type from DRM_MODE_OBJECT_* defines
3821 * This creates a new generic drm property which can then be attached to a drm
3822 * object with drm_object_attach_property. The returned property object must be
3823 * freed with drm_property_destroy.
3825 * Userspace is only allowed to set this to any property value of the given
3826 * @type. Only useful for atomic properties, which is enforced.
3829 * A pointer to the newly created property on success, NULL on failure.
3831 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3832 int flags
, const char *name
, uint32_t type
)
3834 struct drm_property
*property
;
3836 flags
|= DRM_MODE_PROP_OBJECT
;
3838 if (WARN_ON(!(flags
& DRM_MODE_PROP_ATOMIC
)))
3841 property
= drm_property_create(dev
, flags
, name
, 1);
3845 property
->values
[0] = type
;
3849 EXPORT_SYMBOL(drm_property_create_object
);
3852 * drm_property_create_bool - create a new boolean property type
3854 * @flags: flags specifying the property type
3855 * @name: name of the property
3857 * This creates a new generic drm property which can then be attached to a drm
3858 * object with drm_object_attach_property. The returned property object must be
3859 * freed with drm_property_destroy.
3861 * This is implemented as a ranged property with only {0, 1} as valid values.
3864 * A pointer to the newly created property on success, NULL on failure.
3866 struct drm_property
*drm_property_create_bool(struct drm_device
*dev
, int flags
,
3869 return drm_property_create_range(dev
, flags
, name
, 0, 1);
3871 EXPORT_SYMBOL(drm_property_create_bool
);
3874 * drm_property_add_enum - add a possible value to an enumeration property
3875 * @property: enumeration property to change
3876 * @index: index of the new enumeration
3877 * @value: value of the new enumeration
3878 * @name: symbolic name of the new enumeration
3880 * This functions adds enumerations to a property.
3882 * It's use is deprecated, drivers should use one of the more specific helpers
3883 * to directly create the property with all enumerations already attached.
3886 * Zero on success, error code on failure.
3888 int drm_property_add_enum(struct drm_property
*property
, int index
,
3889 uint64_t value
, const char *name
)
3891 struct drm_property_enum
*prop_enum
;
3893 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3894 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3898 * Bitmask enum properties have the additional constraint of values
3901 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3905 if (!list_empty(&property
->enum_list
)) {
3906 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3907 if (prop_enum
->value
== value
) {
3908 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3909 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3915 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3919 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3920 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3921 prop_enum
->value
= value
;
3923 property
->values
[index
] = value
;
3924 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
3927 EXPORT_SYMBOL(drm_property_add_enum
);
3930 * drm_property_destroy - destroy a drm property
3932 * @property: property to destry
3934 * This function frees a property including any attached resources like
3935 * enumeration values.
3937 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3939 struct drm_property_enum
*prop_enum
, *pt
;
3941 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
3942 list_del(&prop_enum
->head
);
3946 if (property
->num_values
)
3947 kfree(property
->values
);
3948 drm_mode_object_put(dev
, &property
->base
);
3949 list_del(&property
->head
);
3952 EXPORT_SYMBOL(drm_property_destroy
);
3955 * drm_object_attach_property - attach a property to a modeset object
3956 * @obj: drm modeset object
3957 * @property: property to attach
3958 * @init_val: initial value of the property
3960 * This attaches the given property to the modeset object with the given initial
3961 * value. Currently this function cannot fail since the properties are stored in
3962 * a statically sized array.
3964 void drm_object_attach_property(struct drm_mode_object
*obj
,
3965 struct drm_property
*property
,
3968 int count
= obj
->properties
->count
;
3970 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3971 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3972 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3973 "you see this message on the same object type.\n",
3978 obj
->properties
->properties
[count
] = property
;
3979 obj
->properties
->values
[count
] = init_val
;
3980 obj
->properties
->count
++;
3981 if (property
->flags
& DRM_MODE_PROP_ATOMIC
)
3982 obj
->properties
->atomic_count
++;
3984 EXPORT_SYMBOL(drm_object_attach_property
);
3987 * drm_object_property_set_value - set the value of a property
3988 * @obj: drm mode object to set property value for
3989 * @property: property to set
3990 * @val: value the property should be set to
3992 * This functions sets a given property on a given object. This function only
3993 * changes the software state of the property, it does not call into the
3994 * driver's ->set_property callback.
3997 * Zero on success, error code on failure.
3999 int drm_object_property_set_value(struct drm_mode_object
*obj
,
4000 struct drm_property
*property
, uint64_t val
)
4004 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4005 if (obj
->properties
->properties
[i
] == property
) {
4006 obj
->properties
->values
[i
] = val
;
4013 EXPORT_SYMBOL(drm_object_property_set_value
);
4016 * drm_object_property_get_value - retrieve the value of a property
4017 * @obj: drm mode object to get property value from
4018 * @property: property to retrieve
4019 * @val: storage for the property value
4021 * This function retrieves the softare state of the given property for the given
4022 * property. Since there is no driver callback to retrieve the current property
4023 * value this might be out of sync with the hardware, depending upon the driver
4027 * Zero on success, error code on failure.
4029 int drm_object_property_get_value(struct drm_mode_object
*obj
,
4030 struct drm_property
*property
, uint64_t *val
)
4034 /* read-only properties bypass atomic mechanism and still store
4035 * their value in obj->properties->values[].. mostly to avoid
4036 * having to deal w/ EDID and similar props in atomic paths:
4038 if (drm_core_check_feature(property
->dev
, DRIVER_ATOMIC
) &&
4039 !(property
->flags
& DRM_MODE_PROP_IMMUTABLE
))
4040 return drm_atomic_get_property(obj
, property
, val
);
4042 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4043 if (obj
->properties
->properties
[i
] == property
) {
4044 *val
= obj
->properties
->values
[i
];
4051 EXPORT_SYMBOL(drm_object_property_get_value
);
4054 * drm_mode_getproperty_ioctl - get the property metadata
4057 * @file_priv: DRM file info
4059 * This function retrieves the metadata for a given property, like the different
4060 * possible values for an enum property or the limits for a range property.
4062 * Blob properties are special
4064 * Called by the user via ioctl.
4067 * Zero on success, negative errno on failure.
4069 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
4070 void *data
, struct drm_file
*file_priv
)
4072 struct drm_mode_get_property
*out_resp
= data
;
4073 struct drm_property
*property
;
4075 int value_count
= 0;
4078 struct drm_property_enum
*prop_enum
;
4079 struct drm_mode_property_enum __user
*enum_ptr
;
4080 uint64_t __user
*values_ptr
;
4082 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4085 drm_modeset_lock_all(dev
);
4086 property
= drm_property_find(dev
, out_resp
->prop_id
);
4092 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4093 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4094 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
4098 value_count
= property
->num_values
;
4100 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
4101 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
4102 out_resp
->flags
= property
->flags
;
4104 if ((out_resp
->count_values
>= value_count
) && value_count
) {
4105 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
4106 for (i
= 0; i
< value_count
; i
++) {
4107 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
4113 out_resp
->count_values
= value_count
;
4115 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4116 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4117 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
4119 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
4120 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
4122 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
4127 if (copy_to_user(&enum_ptr
[copied
].name
,
4128 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
4135 out_resp
->count_enum_blobs
= enum_count
;
4139 * NOTE: The idea seems to have been to use this to read all the blob
4140 * property values. But nothing ever added them to the corresponding
4141 * list, userspace always used the special-purpose get_blob ioctl to
4142 * read the value for a blob property. It also doesn't make a lot of
4143 * sense to return values here when everything else is just metadata for
4144 * the property itself.
4146 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4147 out_resp
->count_enum_blobs
= 0;
4149 drm_modeset_unlock_all(dev
);
4153 static struct drm_property_blob
*
4154 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
4157 struct drm_property_blob
*blob
;
4160 if (!length
|| !data
)
4163 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
4167 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
4173 blob
->length
= length
;
4175 memcpy(blob
->data
, data
, length
);
4177 list_add_tail(&blob
->head
, &dev
->mode_config
.property_blob_list
);
4181 static void drm_property_destroy_blob(struct drm_device
*dev
,
4182 struct drm_property_blob
*blob
)
4184 drm_mode_object_put(dev
, &blob
->base
);
4185 list_del(&blob
->head
);
4190 * drm_mode_getblob_ioctl - get the contents of a blob property value
4193 * @file_priv: DRM file info
4195 * This function retrieves the contents of a blob property. The value stored in
4196 * an object's blob property is just a normal modeset object id.
4198 * Called by the user via ioctl.
4201 * Zero on success, negative errno on failure.
4203 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
4204 void *data
, struct drm_file
*file_priv
)
4206 struct drm_mode_get_blob
*out_resp
= data
;
4207 struct drm_property_blob
*blob
;
4209 void __user
*blob_ptr
;
4211 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4214 drm_modeset_lock_all(dev
);
4215 blob
= drm_property_blob_find(dev
, out_resp
->blob_id
);
4221 if (out_resp
->length
== blob
->length
) {
4222 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4223 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)) {
4228 out_resp
->length
= blob
->length
;
4231 drm_modeset_unlock_all(dev
);
4236 * drm_mode_connector_set_path_property - set tile property on connector
4237 * @connector: connector to set property on.
4238 * @path: path to use for property.
4240 * This creates a property to expose to userspace to specify a
4241 * connector path. This is mainly used for DisplayPort MST where
4242 * connectors have a topology and we want to allow userspace to give
4243 * them more meaningful names.
4246 * Zero on success, negative errno on failure.
4248 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4251 struct drm_device
*dev
= connector
->dev
;
4252 size_t size
= strlen(path
) + 1;
4255 connector
->path_blob_ptr
= drm_property_create_blob(connector
->dev
,
4257 if (!connector
->path_blob_ptr
)
4260 ret
= drm_object_property_set_value(&connector
->base
,
4261 dev
->mode_config
.path_property
,
4262 connector
->path_blob_ptr
->base
.id
);
4265 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4268 * drm_mode_connector_set_tile_property - set tile property on connector
4269 * @connector: connector to set property on.
4271 * This looks up the tile information for a connector, and creates a
4272 * property for userspace to parse if it exists. The property is of
4273 * the form of 8 integers using ':' as a separator.
4276 * Zero on success, errno on failure.
4278 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
)
4280 struct drm_device
*dev
= connector
->dev
;
4284 if (connector
->tile_blob_ptr
)
4285 drm_property_destroy_blob(dev
, connector
->tile_blob_ptr
);
4287 if (!connector
->has_tile
) {
4288 connector
->tile_blob_ptr
= NULL
;
4289 ret
= drm_object_property_set_value(&connector
->base
,
4290 dev
->mode_config
.tile_property
, 0);
4294 snprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4295 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
4296 connector
->num_h_tile
, connector
->num_v_tile
,
4297 connector
->tile_h_loc
, connector
->tile_v_loc
,
4298 connector
->tile_h_size
, connector
->tile_v_size
);
4299 size
= strlen(tile
) + 1;
4301 connector
->tile_blob_ptr
= drm_property_create_blob(connector
->dev
,
4303 if (!connector
->tile_blob_ptr
)
4306 ret
= drm_object_property_set_value(&connector
->base
,
4307 dev
->mode_config
.tile_property
,
4308 connector
->tile_blob_ptr
->base
.id
);
4311 EXPORT_SYMBOL(drm_mode_connector_set_tile_property
);
4314 * drm_mode_connector_update_edid_property - update the edid property of a connector
4315 * @connector: drm connector
4316 * @edid: new value of the edid property
4318 * This function creates a new blob modeset object and assigns its id to the
4319 * connector's edid property.
4322 * Zero on success, negative errno on failure.
4324 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4325 const struct edid
*edid
)
4327 struct drm_device
*dev
= connector
->dev
;
4331 /* ignore requests to set edid when overridden */
4332 if (connector
->override_edid
)
4335 if (connector
->edid_blob_ptr
)
4336 drm_property_destroy_blob(dev
, connector
->edid_blob_ptr
);
4338 /* Delete edid, when there is none. */
4340 connector
->edid_blob_ptr
= NULL
;
4341 ret
= drm_object_property_set_value(&connector
->base
, dev
->mode_config
.edid_property
, 0);
4345 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4346 connector
->edid_blob_ptr
= drm_property_create_blob(connector
->dev
,
4348 if (!connector
->edid_blob_ptr
)
4351 ret
= drm_object_property_set_value(&connector
->base
,
4352 dev
->mode_config
.edid_property
,
4353 connector
->edid_blob_ptr
->base
.id
);
4357 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4359 /* Some properties could refer to dynamic refcnt'd objects, or things that
4360 * need special locking to handle lifetime issues (ie. to ensure the prop
4361 * value doesn't become invalid part way through the property update due to
4362 * race). The value returned by reference via 'obj' should be passed back
4363 * to drm_property_change_valid_put() after the property is set (and the
4364 * object to which the property is attached has a chance to take it's own
4367 bool drm_property_change_valid_get(struct drm_property
*property
,
4368 uint64_t value
, struct drm_mode_object
**ref
)
4372 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4377 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4378 if (value
< property
->values
[0] || value
> property
->values
[1])
4381 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4382 int64_t svalue
= U642I64(value
);
4384 if (svalue
< U642I64(property
->values
[0]) ||
4385 svalue
> U642I64(property
->values
[1]))
4388 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4389 uint64_t valid_mask
= 0;
4391 for (i
= 0; i
< property
->num_values
; i
++)
4392 valid_mask
|= (1ULL << property
->values
[i
]);
4393 return !(value
& ~valid_mask
);
4394 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4395 /* Only the driver knows */
4397 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4398 /* a zero value for an object property translates to null: */
4402 /* handle refcnt'd objects specially: */
4403 if (property
->values
[0] == DRM_MODE_OBJECT_FB
) {
4404 struct drm_framebuffer
*fb
;
4405 fb
= drm_framebuffer_lookup(property
->dev
, value
);
4413 return _object_find(property
->dev
, value
, property
->values
[0]) != NULL
;
4417 for (i
= 0; i
< property
->num_values
; i
++)
4418 if (property
->values
[i
] == value
)
4423 void drm_property_change_valid_put(struct drm_property
*property
,
4424 struct drm_mode_object
*ref
)
4429 if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4430 if (property
->values
[0] == DRM_MODE_OBJECT_FB
)
4431 drm_framebuffer_unreference(obj_to_fb(ref
));
4436 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4439 * @file_priv: DRM file info
4441 * This function sets the current value for a connectors's property. It also
4442 * calls into a driver's ->set_property callback to update the hardware state
4444 * Called by the user via ioctl.
4447 * Zero on success, negative errno on failure.
4449 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4450 void *data
, struct drm_file
*file_priv
)
4452 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4453 struct drm_mode_obj_set_property obj_set_prop
= {
4454 .value
= conn_set_prop
->value
,
4455 .prop_id
= conn_set_prop
->prop_id
,
4456 .obj_id
= conn_set_prop
->connector_id
,
4457 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4460 /* It does all the locking and checking we need */
4461 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4464 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4465 struct drm_property
*property
,
4469 struct drm_connector
*connector
= obj_to_connector(obj
);
4471 /* Do DPMS ourselves */
4472 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4473 if (connector
->funcs
->dpms
)
4474 (*connector
->funcs
->dpms
)(connector
, (int)value
);
4476 } else if (connector
->funcs
->set_property
)
4477 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4479 /* store the property value if successful */
4481 drm_object_property_set_value(&connector
->base
, property
, value
);
4485 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4486 struct drm_property
*property
,
4490 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4492 if (crtc
->funcs
->set_property
)
4493 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4495 drm_object_property_set_value(obj
, property
, value
);
4501 * drm_mode_plane_set_obj_prop - set the value of a property
4502 * @plane: drm plane object to set property value for
4503 * @property: property to set
4504 * @value: value the property should be set to
4506 * This functions sets a given property on a given plane object. This function
4507 * calls the driver's ->set_property callback and changes the software state of
4508 * the property if the callback succeeds.
4511 * Zero on success, error code on failure.
4513 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4514 struct drm_property
*property
,
4518 struct drm_mode_object
*obj
= &plane
->base
;
4520 if (plane
->funcs
->set_property
)
4521 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4523 drm_object_property_set_value(obj
, property
, value
);
4527 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4530 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4533 * @file_priv: DRM file info
4535 * This function retrieves the current value for an object's property. Compared
4536 * to the connector specific ioctl this one is extended to also work on crtc and
4539 * Called by the user via ioctl.
4542 * Zero on success, negative errno on failure.
4544 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4545 struct drm_file
*file_priv
)
4547 struct drm_mode_obj_get_properties
*arg
= data
;
4548 struct drm_mode_object
*obj
;
4551 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4554 drm_modeset_lock_all(dev
);
4556 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4561 if (!obj
->properties
) {
4566 ret
= get_properties(obj
, file_priv
->atomic
,
4567 (uint32_t __user
*)(unsigned long)(arg
->props_ptr
),
4568 (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
),
4572 drm_modeset_unlock_all(dev
);
4577 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4580 * @file_priv: DRM file info
4582 * This function sets the current value for an object's property. It also calls
4583 * into a driver's ->set_property callback to update the hardware state.
4584 * Compared to the connector specific ioctl this one is extended to also work on
4585 * crtc and plane objects.
4587 * Called by the user via ioctl.
4590 * Zero on success, negative errno on failure.
4592 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4593 struct drm_file
*file_priv
)
4595 struct drm_mode_obj_set_property
*arg
= data
;
4596 struct drm_mode_object
*arg_obj
;
4597 struct drm_mode_object
*prop_obj
;
4598 struct drm_property
*property
;
4599 int i
, ret
= -EINVAL
;
4600 struct drm_mode_object
*ref
;
4602 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4605 drm_modeset_lock_all(dev
);
4607 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4612 if (!arg_obj
->properties
)
4615 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4616 if (arg_obj
->properties
->properties
[i
]->base
.id
== arg
->prop_id
)
4619 if (i
== arg_obj
->properties
->count
)
4622 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
4623 DRM_MODE_OBJECT_PROPERTY
);
4628 property
= obj_to_property(prop_obj
);
4630 if (!drm_property_change_valid_get(property
, arg
->value
, &ref
))
4633 switch (arg_obj
->type
) {
4634 case DRM_MODE_OBJECT_CONNECTOR
:
4635 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
4638 case DRM_MODE_OBJECT_CRTC
:
4639 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
4641 case DRM_MODE_OBJECT_PLANE
:
4642 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
4643 property
, arg
->value
);
4647 drm_property_change_valid_put(property
, ref
);
4650 drm_modeset_unlock_all(dev
);
4655 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4656 * @connector: connector to attach
4657 * @encoder: encoder to attach @connector to
4659 * This function links up a connector to an encoder. Note that the routing
4660 * restrictions between encoders and crtcs are exposed to userspace through the
4661 * possible_clones and possible_crtcs bitmasks.
4664 * Zero on success, negative errno on failure.
4666 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
4667 struct drm_encoder
*encoder
)
4671 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
4672 if (connector
->encoder_ids
[i
] == 0) {
4673 connector
->encoder_ids
[i
] = encoder
->base
.id
;
4679 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
4682 * drm_mode_crtc_set_gamma_size - set the gamma table size
4683 * @crtc: CRTC to set the gamma table size for
4684 * @gamma_size: size of the gamma table
4686 * Drivers which support gamma tables should set this to the supported gamma
4687 * table size when initializing the CRTC. Currently the drm core only supports a
4688 * fixed gamma table size.
4691 * Zero on success, negative errno on failure.
4693 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
4696 crtc
->gamma_size
= gamma_size
;
4698 crtc
->gamma_store
= kcalloc(gamma_size
, sizeof(uint16_t) * 3,
4700 if (!crtc
->gamma_store
) {
4701 crtc
->gamma_size
= 0;
4707 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
4710 * drm_mode_gamma_set_ioctl - set the gamma table
4713 * @file_priv: DRM file info
4715 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4716 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4718 * Called by the user via ioctl.
4721 * Zero on success, negative errno on failure.
4723 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
4724 void *data
, struct drm_file
*file_priv
)
4726 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4727 struct drm_crtc
*crtc
;
4728 void *r_base
, *g_base
, *b_base
;
4732 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4735 drm_modeset_lock_all(dev
);
4736 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4742 if (crtc
->funcs
->gamma_set
== NULL
) {
4747 /* memcpy into gamma store */
4748 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4753 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4754 r_base
= crtc
->gamma_store
;
4755 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
4760 g_base
= r_base
+ size
;
4761 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
4766 b_base
= g_base
+ size
;
4767 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
4772 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
4775 drm_modeset_unlock_all(dev
);
4781 * drm_mode_gamma_get_ioctl - get the gamma table
4784 * @file_priv: DRM file info
4786 * Copy the current gamma table into the storage provided. This also provides
4787 * the gamma table size the driver expects, which can be used to size the
4788 * allocated storage.
4790 * Called by the user via ioctl.
4793 * Zero on success, negative errno on failure.
4795 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
4796 void *data
, struct drm_file
*file_priv
)
4798 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4799 struct drm_crtc
*crtc
;
4800 void *r_base
, *g_base
, *b_base
;
4804 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4807 drm_modeset_lock_all(dev
);
4808 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4814 /* memcpy into gamma store */
4815 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4820 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4821 r_base
= crtc
->gamma_store
;
4822 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
4827 g_base
= r_base
+ size
;
4828 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
4833 b_base
= g_base
+ size
;
4834 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
4839 drm_modeset_unlock_all(dev
);
4844 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4847 * @file_priv: DRM file info
4849 * This schedules an asynchronous update on a given CRTC, called page flip.
4850 * Optionally a drm event is generated to signal the completion of the event.
4851 * Generic drivers cannot assume that a pageflip with changed framebuffer
4852 * properties (including driver specific metadata like tiling layout) will work,
4853 * but some drivers support e.g. pixel format changes through the pageflip
4856 * Called by the user via ioctl.
4859 * Zero on success, negative errno on failure.
4861 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
4862 void *data
, struct drm_file
*file_priv
)
4864 struct drm_mode_crtc_page_flip
*page_flip
= data
;
4865 struct drm_crtc
*crtc
;
4866 struct drm_framebuffer
*fb
= NULL
;
4867 struct drm_pending_vblank_event
*e
= NULL
;
4868 unsigned long flags
;
4871 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
4872 page_flip
->reserved
!= 0)
4875 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
4878 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
4882 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
4883 if (crtc
->primary
->fb
== NULL
) {
4884 /* The framebuffer is currently unbound, presumably
4885 * due to a hotplug event, that userspace has not
4892 if (crtc
->funcs
->page_flip
== NULL
)
4895 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
4901 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
4905 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
4906 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4911 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4913 spin_lock_irqsave(&dev
->event_lock
, flags
);
4914 if (file_priv
->event_space
< sizeof(e
->event
)) {
4915 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4918 file_priv
->event_space
-= sizeof(e
->event
);
4919 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4921 e
= kzalloc(sizeof(*e
), GFP_KERNEL
);
4923 spin_lock_irqsave(&dev
->event_lock
, flags
);
4924 file_priv
->event_space
+= sizeof(e
->event
);
4925 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4929 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
4930 e
->event
.base
.length
= sizeof(e
->event
);
4931 e
->event
.user_data
= page_flip
->user_data
;
4932 e
->base
.event
= &e
->event
.base
;
4933 e
->base
.file_priv
= file_priv
;
4935 (void (*) (struct drm_pending_event
*)) kfree
;
4938 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
4939 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
4941 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4942 spin_lock_irqsave(&dev
->event_lock
, flags
);
4943 file_priv
->event_space
+= sizeof(e
->event
);
4944 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4947 /* Keep the old fb, don't unref it. */
4948 crtc
->primary
->old_fb
= NULL
;
4951 * Warn if the driver hasn't properly updated the crtc->fb
4952 * field to reflect that the new framebuffer is now used.
4953 * Failing to do so will screw with the reference counting
4956 WARN_ON(crtc
->primary
->fb
!= fb
);
4957 /* Unref only the old framebuffer. */
4963 drm_framebuffer_unreference(fb
);
4964 if (crtc
->primary
->old_fb
)
4965 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
4966 crtc
->primary
->old_fb
= NULL
;
4967 drm_modeset_unlock_crtc(crtc
);
4973 * drm_mode_config_reset - call ->reset callbacks
4976 * This functions calls all the crtc's, encoder's and connector's ->reset
4977 * callback. Drivers can use this in e.g. their driver load or resume code to
4978 * reset hardware and software state.
4980 void drm_mode_config_reset(struct drm_device
*dev
)
4982 struct drm_crtc
*crtc
;
4983 struct drm_plane
*plane
;
4984 struct drm_encoder
*encoder
;
4985 struct drm_connector
*connector
;
4987 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
)
4988 if (plane
->funcs
->reset
)
4989 plane
->funcs
->reset(plane
);
4991 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
4992 if (crtc
->funcs
->reset
)
4993 crtc
->funcs
->reset(crtc
);
4995 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
4996 if (encoder
->funcs
->reset
)
4997 encoder
->funcs
->reset(encoder
);
4999 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
5000 connector
->status
= connector_status_unknown
;
5002 if (connector
->funcs
->reset
)
5003 connector
->funcs
->reset(connector
);
5006 EXPORT_SYMBOL(drm_mode_config_reset
);
5009 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5012 * @file_priv: DRM file info
5014 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5015 * TTM or something else entirely) and returns the resulting buffer handle. This
5016 * handle can then be wrapped up into a framebuffer modeset object.
5018 * Note that userspace is not allowed to use such objects for render
5019 * acceleration - drivers must create their own private ioctls for such a use
5022 * Called by the user via ioctl.
5025 * Zero on success, negative errno on failure.
5027 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
5028 void *data
, struct drm_file
*file_priv
)
5030 struct drm_mode_create_dumb
*args
= data
;
5031 u32 cpp
, stride
, size
;
5033 if (!dev
->driver
->dumb_create
)
5035 if (!args
->width
|| !args
->height
|| !args
->bpp
)
5038 /* overflow checks for 32bit size calculations */
5039 /* NOTE: DIV_ROUND_UP() can overflow */
5040 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
5041 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
5043 stride
= cpp
* args
->width
;
5044 if (args
->height
> 0xffffffffU
/ stride
)
5047 /* test for wrap-around */
5048 size
= args
->height
* stride
;
5049 if (PAGE_ALIGN(size
) == 0)
5053 * handle, pitch and size are output parameters. Zero them out to
5054 * prevent drivers from accidentally using uninitialized data. Since
5055 * not all existing userspace is clearing these fields properly we
5056 * cannot reject IOCTL with garbage in them.
5062 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
5066 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5069 * @file_priv: DRM file info
5071 * Allocate an offset in the drm device node's address space to be able to
5072 * memory map a dumb buffer.
5074 * Called by the user via ioctl.
5077 * Zero on success, negative errno on failure.
5079 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
5080 void *data
, struct drm_file
*file_priv
)
5082 struct drm_mode_map_dumb
*args
= data
;
5084 /* call driver ioctl to get mmap offset */
5085 if (!dev
->driver
->dumb_map_offset
)
5088 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
5092 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5095 * @file_priv: DRM file info
5097 * This destroys the userspace handle for the given dumb backing storage buffer.
5098 * Since buffer objects must be reference counted in the kernel a buffer object
5099 * won't be immediately freed if a framebuffer modeset object still uses it.
5101 * Called by the user via ioctl.
5104 * Zero on success, negative errno on failure.
5106 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
5107 void *data
, struct drm_file
*file_priv
)
5109 struct drm_mode_destroy_dumb
*args
= data
;
5111 if (!dev
->driver
->dumb_destroy
)
5114 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
5118 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5119 * @format: pixel format (DRM_FORMAT_*)
5120 * @depth: storage for the depth value
5121 * @bpp: storage for the bpp value
5123 * This only supports RGB formats here for compat with code that doesn't use
5124 * pixel formats directly yet.
5126 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
5131 case DRM_FORMAT_RGB332
:
5132 case DRM_FORMAT_BGR233
:
5136 case DRM_FORMAT_XRGB1555
:
5137 case DRM_FORMAT_XBGR1555
:
5138 case DRM_FORMAT_RGBX5551
:
5139 case DRM_FORMAT_BGRX5551
:
5140 case DRM_FORMAT_ARGB1555
:
5141 case DRM_FORMAT_ABGR1555
:
5142 case DRM_FORMAT_RGBA5551
:
5143 case DRM_FORMAT_BGRA5551
:
5147 case DRM_FORMAT_RGB565
:
5148 case DRM_FORMAT_BGR565
:
5152 case DRM_FORMAT_RGB888
:
5153 case DRM_FORMAT_BGR888
:
5157 case DRM_FORMAT_XRGB8888
:
5158 case DRM_FORMAT_XBGR8888
:
5159 case DRM_FORMAT_RGBX8888
:
5160 case DRM_FORMAT_BGRX8888
:
5164 case DRM_FORMAT_XRGB2101010
:
5165 case DRM_FORMAT_XBGR2101010
:
5166 case DRM_FORMAT_RGBX1010102
:
5167 case DRM_FORMAT_BGRX1010102
:
5168 case DRM_FORMAT_ARGB2101010
:
5169 case DRM_FORMAT_ABGR2101010
:
5170 case DRM_FORMAT_RGBA1010102
:
5171 case DRM_FORMAT_BGRA1010102
:
5175 case DRM_FORMAT_ARGB8888
:
5176 case DRM_FORMAT_ABGR8888
:
5177 case DRM_FORMAT_RGBA8888
:
5178 case DRM_FORMAT_BGRA8888
:
5183 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5184 drm_get_format_name(format
));
5190 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
5193 * drm_format_num_planes - get the number of planes for format
5194 * @format: pixel format (DRM_FORMAT_*)
5197 * The number of planes used by the specified pixel format.
5199 int drm_format_num_planes(uint32_t format
)
5202 case DRM_FORMAT_YUV410
:
5203 case DRM_FORMAT_YVU410
:
5204 case DRM_FORMAT_YUV411
:
5205 case DRM_FORMAT_YVU411
:
5206 case DRM_FORMAT_YUV420
:
5207 case DRM_FORMAT_YVU420
:
5208 case DRM_FORMAT_YUV422
:
5209 case DRM_FORMAT_YVU422
:
5210 case DRM_FORMAT_YUV444
:
5211 case DRM_FORMAT_YVU444
:
5213 case DRM_FORMAT_NV12
:
5214 case DRM_FORMAT_NV21
:
5215 case DRM_FORMAT_NV16
:
5216 case DRM_FORMAT_NV61
:
5217 case DRM_FORMAT_NV24
:
5218 case DRM_FORMAT_NV42
:
5224 EXPORT_SYMBOL(drm_format_num_planes
);
5227 * drm_format_plane_cpp - determine the bytes per pixel value
5228 * @format: pixel format (DRM_FORMAT_*)
5229 * @plane: plane index
5232 * The bytes per pixel value for the specified plane.
5234 int drm_format_plane_cpp(uint32_t format
, int plane
)
5239 if (plane
>= drm_format_num_planes(format
))
5243 case DRM_FORMAT_YUYV
:
5244 case DRM_FORMAT_YVYU
:
5245 case DRM_FORMAT_UYVY
:
5246 case DRM_FORMAT_VYUY
:
5248 case DRM_FORMAT_NV12
:
5249 case DRM_FORMAT_NV21
:
5250 case DRM_FORMAT_NV16
:
5251 case DRM_FORMAT_NV61
:
5252 case DRM_FORMAT_NV24
:
5253 case DRM_FORMAT_NV42
:
5254 return plane
? 2 : 1;
5255 case DRM_FORMAT_YUV410
:
5256 case DRM_FORMAT_YVU410
:
5257 case DRM_FORMAT_YUV411
:
5258 case DRM_FORMAT_YVU411
:
5259 case DRM_FORMAT_YUV420
:
5260 case DRM_FORMAT_YVU420
:
5261 case DRM_FORMAT_YUV422
:
5262 case DRM_FORMAT_YVU422
:
5263 case DRM_FORMAT_YUV444
:
5264 case DRM_FORMAT_YVU444
:
5267 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
5271 EXPORT_SYMBOL(drm_format_plane_cpp
);
5274 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5275 * @format: pixel format (DRM_FORMAT_*)
5278 * The horizontal chroma subsampling factor for the
5279 * specified pixel format.
5281 int drm_format_horz_chroma_subsampling(uint32_t format
)
5284 case DRM_FORMAT_YUV411
:
5285 case DRM_FORMAT_YVU411
:
5286 case DRM_FORMAT_YUV410
:
5287 case DRM_FORMAT_YVU410
:
5289 case DRM_FORMAT_YUYV
:
5290 case DRM_FORMAT_YVYU
:
5291 case DRM_FORMAT_UYVY
:
5292 case DRM_FORMAT_VYUY
:
5293 case DRM_FORMAT_NV12
:
5294 case DRM_FORMAT_NV21
:
5295 case DRM_FORMAT_NV16
:
5296 case DRM_FORMAT_NV61
:
5297 case DRM_FORMAT_YUV422
:
5298 case DRM_FORMAT_YVU422
:
5299 case DRM_FORMAT_YUV420
:
5300 case DRM_FORMAT_YVU420
:
5306 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5309 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5310 * @format: pixel format (DRM_FORMAT_*)
5313 * The vertical chroma subsampling factor for the
5314 * specified pixel format.
5316 int drm_format_vert_chroma_subsampling(uint32_t format
)
5319 case DRM_FORMAT_YUV410
:
5320 case DRM_FORMAT_YVU410
:
5322 case DRM_FORMAT_YUV420
:
5323 case DRM_FORMAT_YVU420
:
5324 case DRM_FORMAT_NV12
:
5325 case DRM_FORMAT_NV21
:
5331 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5334 * drm_rotation_simplify() - Try to simplify the rotation
5335 * @rotation: Rotation to be simplified
5336 * @supported_rotations: Supported rotations
5338 * Attempt to simplify the rotation to a form that is supported.
5339 * Eg. if the hardware supports everything except DRM_REFLECT_X
5340 * one could call this function like this:
5342 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5343 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5344 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5346 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5347 * transforms the hardware supports, this function may not
5348 * be able to produce a supported transform, so the caller should
5349 * check the result afterwards.
5351 unsigned int drm_rotation_simplify(unsigned int rotation
,
5352 unsigned int supported_rotations
)
5354 if (rotation
& ~supported_rotations
) {
5355 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5356 rotation
= (rotation
& ~0xf) | BIT((ffs(rotation
& 0xf) + 1) % 4);
5361 EXPORT_SYMBOL(drm_rotation_simplify
);
5364 * drm_mode_config_init - initialize DRM mode_configuration structure
5367 * Initialize @dev's mode_config structure, used for tracking the graphics
5368 * configuration of @dev.
5370 * Since this initializes the modeset locks, no locking is possible. Which is no
5371 * problem, since this should happen single threaded at init time. It is the
5372 * driver's problem to ensure this guarantee.
5375 void drm_mode_config_init(struct drm_device
*dev
)
5377 mutex_init(&dev
->mode_config
.mutex
);
5378 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5379 mutex_init(&dev
->mode_config
.idr_mutex
);
5380 mutex_init(&dev
->mode_config
.fb_lock
);
5381 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5382 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5383 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5384 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5385 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5386 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5387 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5388 idr_init(&dev
->mode_config
.crtc_idr
);
5389 idr_init(&dev
->mode_config
.tile_idr
);
5391 drm_modeset_lock_all(dev
);
5392 drm_mode_create_standard_properties(dev
);
5393 drm_modeset_unlock_all(dev
);
5395 /* Just to be sure */
5396 dev
->mode_config
.num_fb
= 0;
5397 dev
->mode_config
.num_connector
= 0;
5398 dev
->mode_config
.num_crtc
= 0;
5399 dev
->mode_config
.num_encoder
= 0;
5400 dev
->mode_config
.num_overlay_plane
= 0;
5401 dev
->mode_config
.num_total_plane
= 0;
5403 EXPORT_SYMBOL(drm_mode_config_init
);
5406 * drm_mode_config_cleanup - free up DRM mode_config info
5409 * Free up all the connectors and CRTCs associated with this DRM device, then
5410 * free up the framebuffers and associated buffer objects.
5412 * Note that since this /should/ happen single-threaded at driver/device
5413 * teardown time, no locking is required. It's the driver's job to ensure that
5414 * this guarantee actually holds true.
5416 * FIXME: cleanup any dangling user buffer objects too
5418 void drm_mode_config_cleanup(struct drm_device
*dev
)
5420 struct drm_connector
*connector
, *ot
;
5421 struct drm_crtc
*crtc
, *ct
;
5422 struct drm_encoder
*encoder
, *enct
;
5423 struct drm_framebuffer
*fb
, *fbt
;
5424 struct drm_property
*property
, *pt
;
5425 struct drm_property_blob
*blob
, *bt
;
5426 struct drm_plane
*plane
, *plt
;
5428 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5430 encoder
->funcs
->destroy(encoder
);
5433 list_for_each_entry_safe(connector
, ot
,
5434 &dev
->mode_config
.connector_list
, head
) {
5435 connector
->funcs
->destroy(connector
);
5438 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5440 drm_property_destroy(dev
, property
);
5443 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5445 drm_property_destroy_blob(dev
, blob
);
5449 * Single-threaded teardown context, so it's not required to grab the
5450 * fb_lock to protect against concurrent fb_list access. Contrary, it
5451 * would actually deadlock with the drm_framebuffer_cleanup function.
5453 * Also, if there are any framebuffers left, that's a driver leak now,
5454 * so politely WARN about this.
5456 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5457 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5458 drm_framebuffer_remove(fb
);
5461 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5463 plane
->funcs
->destroy(plane
);
5466 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5467 crtc
->funcs
->destroy(crtc
);
5470 idr_destroy(&dev
->mode_config
.tile_idr
);
5471 idr_destroy(&dev
->mode_config
.crtc_idr
);
5472 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5474 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5476 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5477 unsigned int supported_rotations
)
5479 static const struct drm_prop_enum_list props
[] = {
5480 { DRM_ROTATE_0
, "rotate-0" },
5481 { DRM_ROTATE_90
, "rotate-90" },
5482 { DRM_ROTATE_180
, "rotate-180" },
5483 { DRM_ROTATE_270
, "rotate-270" },
5484 { DRM_REFLECT_X
, "reflect-x" },
5485 { DRM_REFLECT_Y
, "reflect-y" },
5488 return drm_property_create_bitmask(dev
, 0, "rotation",
5489 props
, ARRAY_SIZE(props
),
5490 supported_rotations
);
5492 EXPORT_SYMBOL(drm_mode_create_rotation_property
);
5497 * Tile groups are used to represent tiled monitors with a unique
5498 * integer identifier. Tiled monitors using DisplayID v1.3 have
5499 * a unique 8-byte handle, we store this in a tile group, so we
5500 * have a common identifier for all tiles in a monitor group.
5502 static void drm_tile_group_free(struct kref
*kref
)
5504 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
5505 struct drm_device
*dev
= tg
->dev
;
5506 mutex_lock(&dev
->mode_config
.idr_mutex
);
5507 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
5508 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5513 * drm_mode_put_tile_group - drop a reference to a tile group.
5515 * @tg: tile group to drop reference to.
5517 * drop reference to tile group and free if 0.
5519 void drm_mode_put_tile_group(struct drm_device
*dev
,
5520 struct drm_tile_group
*tg
)
5522 kref_put(&tg
->refcount
, drm_tile_group_free
);
5526 * drm_mode_get_tile_group - get a reference to an existing tile group
5528 * @topology: 8-bytes unique per monitor.
5530 * Use the unique bytes to get a reference to an existing tile group.
5533 * tile group or NULL if not found.
5535 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
5538 struct drm_tile_group
*tg
;
5540 mutex_lock(&dev
->mode_config
.idr_mutex
);
5541 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
5542 if (!memcmp(tg
->group_data
, topology
, 8)) {
5543 if (!kref_get_unless_zero(&tg
->refcount
))
5545 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5549 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5554 * drm_mode_create_tile_group - create a tile group from a displayid description
5556 * @topology: 8-bytes unique per monitor.
5558 * Create a tile group for the unique monitor, and get a unique
5559 * identifier for the tile group.
5562 * new tile group or error.
5564 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
5567 struct drm_tile_group
*tg
;
5570 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
5572 return ERR_PTR(-ENOMEM
);
5574 kref_init(&tg
->refcount
);
5575 memcpy(tg
->group_data
, topology
, 8);
5578 mutex_lock(&dev
->mode_config
.idr_mutex
);
5579 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
5587 mutex_unlock(&dev
->mode_config
.idr_mutex
);