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/export.h>
36 #include <drm/drm_crtc.h>
37 #include <drm/drm_edid.h>
38 #include <uapi_drm/drm_fourcc.h>
39 #include <linux/slab.h>
40 #include <drm/drm_modeset_lock.h>
41 #include <drm/drm_atomic.h>
43 #include "drm_crtc_internal.h"
44 #include "drm_internal.h"
46 static struct drm_framebuffer
*
47 internal_framebuffer_create(struct drm_device
*dev
,
48 struct drm_mode_fb_cmd2
*r
,
49 struct drm_file
*file_priv
);
51 /* Avoid boilerplate. I'm tired of typing. */
52 #define DRM_ENUM_NAME_FN(fnname, list) \
53 const char *fnname(int val) \
56 for (i = 0; i < ARRAY_SIZE(list); i++) { \
57 if (list[i].type == val) \
58 return list[i].name; \
66 static const struct drm_prop_enum_list drm_dpms_enum_list
[] = {
67 { DRM_MODE_DPMS_ON
, "On" },
68 { DRM_MODE_DPMS_STANDBY
, "Standby" },
69 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
70 { DRM_MODE_DPMS_OFF
, "Off" }
73 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
75 static const struct drm_prop_enum_list drm_plane_type_enum_list
[] = {
76 { DRM_PLANE_TYPE_OVERLAY
, "Overlay" },
77 { DRM_PLANE_TYPE_PRIMARY
, "Primary" },
78 { DRM_PLANE_TYPE_CURSOR
, "Cursor" },
84 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] = {
85 { DRM_MODE_SCALE_NONE
, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
87 { DRM_MODE_SCALE_CENTER
, "Center" },
88 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list
[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE
, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3
, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9
, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list
[] = {
101 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
102 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
103 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
106 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
108 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] = {
109 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
110 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
111 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
114 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
115 drm_dvi_i_subconnector_enum_list
)
117 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] = {
118 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
122 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
125 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
127 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] = {
128 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
129 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
132 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
135 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
136 drm_tv_subconnector_enum_list
)
138 static const struct drm_prop_enum_list drm_dirty_info_enum_list
[] = {
139 { DRM_MODE_DIRTY_OFF
, "Off" },
140 { DRM_MODE_DIRTY_ON
, "On" },
141 { DRM_MODE_DIRTY_ANNOTATE
, "Annotate" },
144 struct drm_conn_prop_enum_list
{
151 * Connector and encoder types.
153 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] = {
154 { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
155 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
156 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
157 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
158 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
159 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
160 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
161 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
162 { DRM_MODE_CONNECTOR_Component
, "Component" },
163 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
164 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
165 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
166 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
167 { DRM_MODE_CONNECTOR_TV
, "TV" },
168 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
169 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
170 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
173 static const struct drm_prop_enum_list drm_encoder_enum_list
[] = {
174 { DRM_MODE_ENCODER_NONE
, "None" },
175 { DRM_MODE_ENCODER_DAC
, "DAC" },
176 { DRM_MODE_ENCODER_TMDS
, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS
, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC
, "TV" },
179 { DRM_MODE_ENCODER_VIRTUAL
, "Virtual" },
180 { DRM_MODE_ENCODER_DSI
, "DSI" },
181 { DRM_MODE_ENCODER_DPMST
, "DP MST" },
184 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] = {
185 { SubPixelUnknown
, "Unknown" },
186 { SubPixelHorizontalRGB
, "Horizontal RGB" },
187 { SubPixelHorizontalBGR
, "Horizontal BGR" },
188 { SubPixelVerticalRGB
, "Vertical RGB" },
189 { SubPixelVerticalBGR
, "Vertical BGR" },
190 { SubPixelNone
, "None" },
193 void drm_connector_ida_init(void)
198 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
199 ida_init(&drm_connector_enum_list
[i
].ida
);
203 void drm_connector_ida_destroy(void)
208 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
209 ida_destroy(&drm_connector_enum_list
[i
].ida
);
214 * drm_get_connector_status_name - return a string for connector status
215 * @status: connector status to compute name of
217 * In contrast to the other drm_get_*_name functions this one here returns a
218 * const pointer and hence is threadsafe.
220 const char *drm_get_connector_status_name(enum drm_connector_status status
)
222 if (status
== connector_status_connected
)
224 else if (status
== connector_status_disconnected
)
225 return "disconnected";
229 EXPORT_SYMBOL(drm_get_connector_status_name
);
232 * drm_get_subpixel_order_name - return a string for a given subpixel enum
233 * @order: enum of subpixel_order
235 * Note you could abuse this and return something out of bounds, but that
236 * would be a caller error. No unscrubbed user data should make it here.
238 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
240 return drm_subpixel_enum_list
[order
].name
;
242 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
244 static char printable_char(int c
)
246 return isascii(c
) && isprint(c
) ? c
: '?';
250 * drm_get_format_name - return a string for drm fourcc format
251 * @format: format to compute name of
253 * Note that the buffer used by this function is globally shared and owned by
254 * the function itself.
256 * FIXME: This isn't really multithreading safe.
258 const char *drm_get_format_name(uint32_t format
)
262 ksnprintf(buf
, sizeof(buf
),
263 "%c%c%c%c %s-endian (0x%08x)",
264 printable_char(format
& 0xff),
265 printable_char((format
>> 8) & 0xff),
266 printable_char((format
>> 16) & 0xff),
267 printable_char((format
>> 24) & 0x7f),
268 format
& DRM_FORMAT_BIG_ENDIAN
? "big" : "little",
273 EXPORT_SYMBOL(drm_get_format_name
);
276 * Internal function to assign a slot in the object idr and optionally
277 * register the object into the idr.
279 static int drm_mode_object_get_reg(struct drm_device
*dev
,
280 struct drm_mode_object
*obj
,
286 mutex_lock(&dev
->mode_config
.idr_mutex
);
287 ret
= idr_alloc(&dev
->mode_config
.crtc_idr
, register_obj
? obj
: NULL
, 1, 0, GFP_KERNEL
);
290 * Set up the object linking under the protection of the idr
291 * lock so that other users can't see inconsistent state.
294 obj
->type
= obj_type
;
296 mutex_unlock(&dev
->mode_config
.idr_mutex
);
298 return ret
< 0 ? ret
: 0;
302 * drm_mode_object_get - allocate a new modeset identifier
304 * @obj: object pointer, used to generate unique ID
305 * @obj_type: object type
307 * Create a unique identifier based on @ptr in @dev's identifier space. Used
308 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
309 * modeset identifiers are _not_ reference counted. Hence don't use this for
310 * reference counted modeset objects like framebuffers.
313 * Zero on success, error code on failure.
315 int drm_mode_object_get(struct drm_device
*dev
,
316 struct drm_mode_object
*obj
, uint32_t obj_type
)
318 return drm_mode_object_get_reg(dev
, obj
, obj_type
, true);
321 static void drm_mode_object_register(struct drm_device
*dev
,
322 struct drm_mode_object
*obj
)
324 mutex_lock(&dev
->mode_config
.idr_mutex
);
325 idr_replace(&dev
->mode_config
.crtc_idr
, obj
, obj
->id
);
326 mutex_unlock(&dev
->mode_config
.idr_mutex
);
330 * drm_mode_object_put - free a modeset identifer
332 * @object: object to free
334 * Free @id from @dev's unique identifier pool. Note that despite the _get
335 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
336 * for reference counted modeset objects like framebuffers.
338 void drm_mode_object_put(struct drm_device
*dev
,
339 struct drm_mode_object
*object
)
341 mutex_lock(&dev
->mode_config
.idr_mutex
);
342 idr_remove(&dev
->mode_config
.crtc_idr
, object
->id
);
343 mutex_unlock(&dev
->mode_config
.idr_mutex
);
346 static struct drm_mode_object
*_object_find(struct drm_device
*dev
,
347 uint32_t id
, uint32_t type
)
349 struct drm_mode_object
*obj
= NULL
;
351 mutex_lock(&dev
->mode_config
.idr_mutex
);
352 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
353 if (obj
&& type
!= DRM_MODE_OBJECT_ANY
&& obj
->type
!= type
)
355 if (obj
&& obj
->id
!= id
)
357 /* don't leak out unref'd fb's */
359 (obj
->type
== DRM_MODE_OBJECT_FB
||
360 obj
->type
== DRM_MODE_OBJECT_BLOB
))
362 mutex_unlock(&dev
->mode_config
.idr_mutex
);
368 * drm_mode_object_find - look up a drm object with static lifetime
370 * @id: id of the mode object
371 * @type: type of the mode object
373 * Note that framebuffers cannot be looked up with this functions - since those
374 * are reference counted, they need special treatment. Even with
375 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
376 * rather than WARN_ON()).
378 struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
379 uint32_t id
, uint32_t type
)
381 struct drm_mode_object
*obj
= NULL
;
383 /* Framebuffers are reference counted and need their own lookup
385 WARN_ON(type
== DRM_MODE_OBJECT_FB
|| type
== DRM_MODE_OBJECT_BLOB
);
386 obj
= _object_find(dev
, id
, type
);
389 EXPORT_SYMBOL(drm_mode_object_find
);
392 * drm_framebuffer_init - initialize a framebuffer
394 * @fb: framebuffer to be initialized
395 * @funcs: ... with these functions
397 * Allocates an ID for the framebuffer's parent mode object, sets its mode
398 * functions & device file and adds it to the master fd list.
401 * This functions publishes the fb and makes it available for concurrent access
402 * by other users. Which means by this point the fb _must_ be fully set up -
403 * since all the fb attributes are invariant over its lifetime, no further
404 * locking but only correct reference counting is required.
407 * Zero on success, error code on failure.
409 int drm_framebuffer_init(struct drm_device
*dev
, struct drm_framebuffer
*fb
,
410 const struct drm_framebuffer_funcs
*funcs
)
414 mutex_lock(&dev
->mode_config
.fb_lock
);
415 kref_init(&fb
->refcount
);
416 INIT_LIST_HEAD(&fb
->filp_head
);
420 ret
= drm_mode_object_get(dev
, &fb
->base
, DRM_MODE_OBJECT_FB
);
424 dev
->mode_config
.num_fb
++;
425 list_add(&fb
->head
, &dev
->mode_config
.fb_list
);
427 mutex_unlock(&dev
->mode_config
.fb_lock
);
431 EXPORT_SYMBOL(drm_framebuffer_init
);
433 /* dev->mode_config.fb_lock must be held! */
434 static void __drm_framebuffer_unregister(struct drm_device
*dev
,
435 struct drm_framebuffer
*fb
)
437 mutex_lock(&dev
->mode_config
.idr_mutex
);
438 idr_remove(&dev
->mode_config
.crtc_idr
, fb
->base
.id
);
439 mutex_unlock(&dev
->mode_config
.idr_mutex
);
444 static void drm_framebuffer_free(struct kref
*kref
)
446 struct drm_framebuffer
*fb
=
447 container_of(kref
, struct drm_framebuffer
, refcount
);
448 struct drm_device
*dev
= fb
->dev
;
451 * The lookup idr holds a weak reference, which has not necessarily been
452 * removed at this point. Check for that.
454 mutex_lock(&dev
->mode_config
.fb_lock
);
456 /* Mark fb as reaped and drop idr ref. */
457 __drm_framebuffer_unregister(dev
, fb
);
459 mutex_unlock(&dev
->mode_config
.fb_lock
);
461 fb
->funcs
->destroy(fb
);
464 static struct drm_framebuffer
*__drm_framebuffer_lookup(struct drm_device
*dev
,
467 struct drm_mode_object
*obj
= NULL
;
468 struct drm_framebuffer
*fb
;
470 mutex_lock(&dev
->mode_config
.idr_mutex
);
471 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
472 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_FB
) || (obj
->id
!= id
))
476 mutex_unlock(&dev
->mode_config
.idr_mutex
);
482 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
484 * @id: id of the fb object
486 * If successful, this grabs an additional reference to the framebuffer -
487 * callers need to make sure to eventually unreference the returned framebuffer
488 * again, using @drm_framebuffer_unreference.
490 struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
493 struct drm_framebuffer
*fb
;
495 mutex_lock(&dev
->mode_config
.fb_lock
);
496 fb
= __drm_framebuffer_lookup(dev
, id
);
498 if (!kref_get_unless_zero(&fb
->refcount
))
501 mutex_unlock(&dev
->mode_config
.fb_lock
);
505 EXPORT_SYMBOL(drm_framebuffer_lookup
);
508 * drm_framebuffer_unreference - unref a framebuffer
509 * @fb: framebuffer to unref
511 * This functions decrements the fb's refcount and frees it if it drops to zero.
513 void drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
515 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
516 kref_put(&fb
->refcount
, drm_framebuffer_free
);
518 EXPORT_SYMBOL(drm_framebuffer_unreference
);
521 * drm_framebuffer_reference - incr the fb refcnt
524 * This functions increments the fb's refcount.
526 void drm_framebuffer_reference(struct drm_framebuffer
*fb
)
528 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
529 kref_get(&fb
->refcount
);
531 EXPORT_SYMBOL(drm_framebuffer_reference
);
534 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
535 * @fb: fb to unregister
537 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
538 * those used for fbdev. Note that the caller must hold a reference of it's own,
539 * i.e. the object may not be destroyed through this call (since it'll lead to a
540 * locking inversion).
542 void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
)
544 struct drm_device
*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
;
601 struct drm_crtc
*crtc
;
602 struct drm_plane
*plane
;
603 struct drm_mode_set set
;
611 WARN_ON(!list_empty(&fb
->filp_head
));
614 * drm ABI mandates that we remove any deleted framebuffers from active
615 * useage. But since most sane clients only remove framebuffers they no
616 * longer need, try to optimize this away.
618 * Since we're holding a reference ourselves, observing a refcount of 1
619 * means that we're the last holder and can skip it. Also, the refcount
620 * can never increase from 1 again, so we don't need any barriers or
623 * Note that userspace could try to race with use and instate a new
624 * usage _after_ we've cleared all current ones. End result will be an
625 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
628 if (atomic_read(&fb
->refcount
.refcount
) > 1) {
629 drm_modeset_lock_all(dev
);
630 /* remove from any CRTC */
631 drm_for_each_crtc(crtc
, dev
) {
632 if (crtc
->primary
->fb
== fb
) {
633 /* should turn off the crtc */
634 memset(&set
, 0, sizeof(struct drm_mode_set
));
637 ret
= drm_mode_set_config_internal(&set
);
639 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc
);
643 drm_for_each_plane(plane
, dev
) {
645 drm_plane_force_disable(plane
);
647 drm_modeset_unlock_all(dev
);
650 drm_framebuffer_unreference(fb
);
652 EXPORT_SYMBOL(drm_framebuffer_remove
);
654 DEFINE_WW_CLASS(crtc_ww_class
);
657 * drm_crtc_init_with_planes - Initialise a new CRTC object with
658 * specified primary and cursor planes.
660 * @crtc: CRTC object to init
661 * @primary: Primary plane for CRTC
662 * @cursor: Cursor plane for CRTC
663 * @funcs: callbacks for the new CRTC
665 * Inits a new object created as base part of a driver crtc object.
668 * Zero on success, error code on failure.
670 int drm_crtc_init_with_planes(struct drm_device
*dev
, struct drm_crtc
*crtc
,
671 struct drm_plane
*primary
,
672 struct drm_plane
*cursor
,
673 const struct drm_crtc_funcs
*funcs
)
675 struct drm_mode_config
*config
= &dev
->mode_config
;
678 WARN_ON(primary
&& primary
->type
!= DRM_PLANE_TYPE_PRIMARY
);
679 WARN_ON(cursor
&& cursor
->type
!= DRM_PLANE_TYPE_CURSOR
);
684 drm_modeset_lock_init(&crtc
->mutex
);
685 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
689 crtc
->base
.properties
= &crtc
->properties
;
691 list_add_tail(&crtc
->head
, &config
->crtc_list
);
694 crtc
->primary
= primary
;
695 crtc
->cursor
= cursor
;
697 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
699 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
701 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
702 drm_object_attach_property(&crtc
->base
, config
->prop_active
, 0);
703 drm_object_attach_property(&crtc
->base
, config
->prop_mode_id
, 0);
708 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
711 * drm_crtc_cleanup - Clean up the core crtc usage
712 * @crtc: CRTC to cleanup
714 * This function cleans up @crtc and removes it from the DRM mode setting
715 * core. Note that the function does *not* free the crtc structure itself,
716 * this is the responsibility of the caller.
718 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
720 struct drm_device
*dev
= crtc
->dev
;
722 kfree(crtc
->gamma_store
);
723 crtc
->gamma_store
= NULL
;
725 drm_modeset_lock_fini(&crtc
->mutex
);
727 drm_mode_object_put(dev
, &crtc
->base
);
728 list_del(&crtc
->head
);
729 dev
->mode_config
.num_crtc
--;
731 WARN_ON(crtc
->state
&& !crtc
->funcs
->atomic_destroy_state
);
732 if (crtc
->state
&& crtc
->funcs
->atomic_destroy_state
)
733 crtc
->funcs
->atomic_destroy_state(crtc
, crtc
->state
);
735 memset(crtc
, 0, sizeof(*crtc
));
737 EXPORT_SYMBOL(drm_crtc_cleanup
);
740 * drm_crtc_index - find the index of a registered CRTC
741 * @crtc: CRTC to find index for
743 * Given a registered CRTC, return the index of that CRTC within a DRM
744 * device's list of CRTCs.
746 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
748 unsigned int index
= 0;
749 struct drm_crtc
*tmp
;
751 drm_for_each_crtc(tmp
, crtc
->dev
) {
760 EXPORT_SYMBOL(drm_crtc_index
);
763 * drm_mode_remove - remove and free a mode
764 * @connector: connector list to modify
765 * @mode: mode to remove
767 * Remove @mode from @connector's mode list, then free it.
769 static void drm_mode_remove(struct drm_connector
*connector
,
770 struct drm_display_mode
*mode
)
772 list_del(&mode
->head
);
773 drm_mode_destroy(connector
->dev
, mode
);
777 * drm_display_info_set_bus_formats - set the supported bus formats
778 * @info: display info to store bus formats in
779 * @fmts: array containing the supported bus formats
780 * @nfmts: the number of entries in the fmts array
782 * Store the supported bus formats in display info structure.
783 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
784 * a full list of available formats.
786 int drm_display_info_set_bus_formats(struct drm_display_info
*info
,
788 unsigned int num_formats
)
792 if (!formats
&& num_formats
)
795 if (formats
&& num_formats
) {
796 fmts
= kmemdup(formats
, sizeof(*formats
) * num_formats
,
802 kfree(info
->bus_formats
);
803 info
->bus_formats
= fmts
;
804 info
->num_bus_formats
= num_formats
;
808 EXPORT_SYMBOL(drm_display_info_set_bus_formats
);
811 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
812 * @connector: connector to quwery
814 * The kernel supports per-connector configration of its consoles through
815 * use of the video= parameter. This function parses that option and
816 * extracts the user's specified mode (or enable/disable status) for a
817 * particular connector. This is typically only used during the early fbdev
820 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
822 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
825 if (fb_get_options(connector
->name
, &option
))
828 if (!drm_mode_parse_command_line_for_connector(option
,
836 switch (mode
->force
) {
840 case DRM_FORCE_ON_DIGITAL
:
849 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
850 connector
->force
= mode
->force
;
853 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
855 mode
->xres
, mode
->yres
,
856 mode
->refresh_specified
? mode
->refresh
: 60,
857 mode
->rb
? " reduced blanking" : "",
858 mode
->margins
? " with margins" : "",
859 mode
->interlace
? " interlaced" : "");
863 * drm_connector_init - Init a preallocated connector
865 * @connector: the connector to init
866 * @funcs: callbacks for this connector
867 * @connector_type: user visible type of the connector
869 * Initialises a preallocated connector. Connectors should be
870 * subclassed as part of driver connector objects.
873 * Zero on success, error code on failure.
875 int drm_connector_init(struct drm_device
*dev
,
876 struct drm_connector
*connector
,
877 const struct drm_connector_funcs
*funcs
,
880 struct drm_mode_config
*config
= &dev
->mode_config
;
883 drm_modeset_lock_all(dev
);
885 ret
= drm_mode_object_get(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
);
889 connector
->base
.properties
= &connector
->properties
;
890 connector
->dev
= dev
;
891 connector
->funcs
= funcs
;
892 connector
->connector_type
= connector_type
;
893 connector
->connector_type_id
=
894 ++drm_connector_enum_list
[connector_type
].count
; /* TODO */
895 if (connector
->connector_type_id
< 0) {
896 ret
= connector
->connector_type_id
;
900 drm_asprintf(GFP_KERNEL
, "%s-%d",
901 drm_connector_enum_list
[connector_type
].name
,
902 connector
->connector_type_id
);
903 if (!connector
->name
) {
908 INIT_LIST_HEAD(&connector
->probed_modes
);
909 INIT_LIST_HEAD(&connector
->modes
);
910 connector
->edid_blob_ptr
= NULL
;
911 connector
->status
= connector_status_unknown
;
913 drm_connector_get_cmdline_mode(connector
);
915 /* We should add connectors at the end to avoid upsetting the connector
917 list_add_tail(&connector
->head
, &config
->connector_list
);
918 config
->num_connector
++;
920 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
921 drm_object_attach_property(&connector
->base
,
922 config
->edid_property
,
925 drm_object_attach_property(&connector
->base
,
926 config
->dpms_property
, 0);
928 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
929 drm_object_attach_property(&connector
->base
, config
->prop_crtc_id
, 0);
932 connector
->debugfs_entry
= NULL
;
936 drm_mode_object_put(dev
, &connector
->base
);
939 drm_modeset_unlock_all(dev
);
943 EXPORT_SYMBOL(drm_connector_init
);
946 * drm_connector_cleanup - cleans up an initialised connector
947 * @connector: connector to cleanup
949 * Cleans up the connector but doesn't free the object.
951 void drm_connector_cleanup(struct drm_connector
*connector
)
953 struct drm_device
*dev
= connector
->dev
;
954 struct drm_display_mode
*mode
, *t
;
956 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
957 drm_mode_remove(connector
, mode
);
959 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
960 drm_mode_remove(connector
, mode
);
962 kfree(connector
->display_info
.bus_formats
);
963 drm_mode_object_put(dev
, &connector
->base
);
964 kfree(connector
->name
);
965 connector
->name
= NULL
;
966 list_del(&connector
->head
);
967 dev
->mode_config
.num_connector
--;
969 WARN_ON(connector
->state
&& !connector
->funcs
->atomic_destroy_state
);
970 if (connector
->state
&& connector
->funcs
->atomic_destroy_state
)
971 connector
->funcs
->atomic_destroy_state(connector
,
974 memset(connector
, 0, sizeof(*connector
));
976 EXPORT_SYMBOL(drm_connector_cleanup
);
979 * drm_connector_index - find the index of a registered connector
980 * @connector: connector to find index for
982 * Given a registered connector, return the index of that connector within a DRM
983 * device's list of connectors.
985 unsigned int drm_connector_index(struct drm_connector
*connector
)
987 unsigned int index
= 0;
988 struct drm_connector
*tmp
;
989 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
991 WARN_ON(!drm_modeset_is_locked(&config
->connection_mutex
));
993 drm_for_each_connector(tmp
, connector
->dev
) {
994 if (tmp
== connector
)
1002 EXPORT_SYMBOL(drm_connector_index
);
1005 * drm_connector_register - register a connector
1006 * @connector: the connector to register
1008 * Register userspace interfaces for a connector
1011 * Zero on success, error code on failure.
1013 int drm_connector_register(struct drm_connector
*connector
)
1017 drm_mode_object_register(connector
->dev
, &connector
->base
);
1019 ret
= drm_sysfs_connector_add(connector
);
1023 ret
= drm_debugfs_connector_add(connector
);
1025 drm_sysfs_connector_remove(connector
);
1031 EXPORT_SYMBOL(drm_connector_register
);
1034 * drm_connector_unregister - unregister a connector
1035 * @connector: the connector to unregister
1037 * Unregister userspace interfaces for a connector
1039 void drm_connector_unregister(struct drm_connector
*connector
)
1041 drm_sysfs_connector_remove(connector
);
1043 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 /* FIXME: 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
= drm_asprintf(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
, unsigned int 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(sizeof(uint32_t) * format_count
,
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
, unsigned int 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 drm_for_each_plane(tmp
, plane
->dev
) {
1296 EXPORT_SYMBOL(drm_plane_index
);
1299 * drm_plane_from_index - find the registered plane at an index
1301 * @idx: index of registered plane to find for
1303 * Given a plane index, return the registered plane from DRM device's
1304 * list of planes with matching index.
1307 drm_plane_from_index(struct drm_device
*dev
, int idx
)
1309 struct drm_plane
*plane
;
1312 drm_for_each_plane(plane
, dev
) {
1319 EXPORT_SYMBOL(drm_plane_from_index
);
1322 * drm_plane_force_disable - Forcibly disable a plane
1323 * @plane: plane to disable
1325 * Forces the plane to be disabled.
1327 * Used when the plane's current framebuffer is destroyed,
1328 * and when restoring fbdev mode.
1330 void drm_plane_force_disable(struct drm_plane
*plane
)
1337 plane
->old_fb
= plane
->fb
;
1338 ret
= plane
->funcs
->disable_plane(plane
);
1340 DRM_ERROR("failed to disable plane with busy fb\n");
1341 plane
->old_fb
= NULL
;
1344 /* disconnect the plane from the fb and crtc: */
1345 drm_framebuffer_unreference(plane
->old_fb
);
1346 plane
->old_fb
= NULL
;
1350 EXPORT_SYMBOL(drm_plane_force_disable
);
1352 static int drm_mode_create_standard_properties(struct drm_device
*dev
)
1354 struct drm_property
*prop
;
1357 * Standard properties (apply to all connectors)
1359 prop
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1360 DRM_MODE_PROP_IMMUTABLE
,
1364 dev
->mode_config
.edid_property
= prop
;
1366 prop
= drm_property_create_enum(dev
, 0,
1367 "DPMS", drm_dpms_enum_list
,
1368 ARRAY_SIZE(drm_dpms_enum_list
));
1371 dev
->mode_config
.dpms_property
= prop
;
1373 prop
= drm_property_create(dev
,
1374 DRM_MODE_PROP_BLOB
|
1375 DRM_MODE_PROP_IMMUTABLE
,
1379 dev
->mode_config
.path_property
= prop
;
1381 prop
= drm_property_create(dev
,
1382 DRM_MODE_PROP_BLOB
|
1383 DRM_MODE_PROP_IMMUTABLE
,
1387 dev
->mode_config
.tile_property
= prop
;
1389 prop
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1390 "type", drm_plane_type_enum_list
,
1391 ARRAY_SIZE(drm_plane_type_enum_list
));
1394 dev
->mode_config
.plane_type_property
= prop
;
1396 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1397 "SRC_X", 0, UINT_MAX
);
1400 dev
->mode_config
.prop_src_x
= prop
;
1402 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1403 "SRC_Y", 0, UINT_MAX
);
1406 dev
->mode_config
.prop_src_y
= prop
;
1408 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1409 "SRC_W", 0, UINT_MAX
);
1412 dev
->mode_config
.prop_src_w
= prop
;
1414 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1415 "SRC_H", 0, UINT_MAX
);
1418 dev
->mode_config
.prop_src_h
= prop
;
1420 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1421 "CRTC_X", INT_MIN
, INT_MAX
);
1424 dev
->mode_config
.prop_crtc_x
= prop
;
1426 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1427 "CRTC_Y", INT_MIN
, INT_MAX
);
1430 dev
->mode_config
.prop_crtc_y
= prop
;
1432 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1433 "CRTC_W", 0, INT_MAX
);
1436 dev
->mode_config
.prop_crtc_w
= prop
;
1438 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1439 "CRTC_H", 0, INT_MAX
);
1442 dev
->mode_config
.prop_crtc_h
= prop
;
1444 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1445 "FB_ID", DRM_MODE_OBJECT_FB
);
1448 dev
->mode_config
.prop_fb_id
= prop
;
1450 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1451 "CRTC_ID", DRM_MODE_OBJECT_CRTC
);
1454 dev
->mode_config
.prop_crtc_id
= prop
;
1456 prop
= drm_property_create_bool(dev
, DRM_MODE_PROP_ATOMIC
,
1460 dev
->mode_config
.prop_active
= prop
;
1462 prop
= drm_property_create(dev
,
1463 DRM_MODE_PROP_ATOMIC
| DRM_MODE_PROP_BLOB
,
1467 dev
->mode_config
.prop_mode_id
= prop
;
1473 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1476 * Called by a driver the first time a DVI-I connector is made.
1478 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1480 struct drm_property
*dvi_i_selector
;
1481 struct drm_property
*dvi_i_subconnector
;
1483 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1487 drm_property_create_enum(dev
, 0,
1488 "select subconnector",
1489 drm_dvi_i_select_enum_list
,
1490 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1491 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1493 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1495 drm_dvi_i_subconnector_enum_list
,
1496 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1497 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1501 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1504 * drm_create_tv_properties - create TV specific connector properties
1506 * @num_modes: number of different TV formats (modes) supported
1507 * @modes: array of pointers to strings containing name of each format
1509 * Called by a driver's TV initialization routine, this function creates
1510 * the TV specific connector properties for a given device. Caller is
1511 * responsible for allocating a list of format names and passing them to
1514 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1515 unsigned int num_modes
,
1516 const char * const modes
[])
1518 struct drm_property
*tv_selector
;
1519 struct drm_property
*tv_subconnector
;
1522 if (dev
->mode_config
.tv_select_subconnector_property
)
1526 * Basic connector properties
1528 tv_selector
= drm_property_create_enum(dev
, 0,
1529 "select subconnector",
1530 drm_tv_select_enum_list
,
1531 ARRAY_SIZE(drm_tv_select_enum_list
));
1535 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1538 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1540 drm_tv_subconnector_enum_list
,
1541 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1542 if (!tv_subconnector
)
1544 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1547 * Other, TV specific properties: margins & TV modes.
1549 dev
->mode_config
.tv_left_margin_property
=
1550 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1551 if (!dev
->mode_config
.tv_left_margin_property
)
1554 dev
->mode_config
.tv_right_margin_property
=
1555 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1556 if (!dev
->mode_config
.tv_right_margin_property
)
1559 dev
->mode_config
.tv_top_margin_property
=
1560 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1561 if (!dev
->mode_config
.tv_top_margin_property
)
1564 dev
->mode_config
.tv_bottom_margin_property
=
1565 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1566 if (!dev
->mode_config
.tv_bottom_margin_property
)
1569 dev
->mode_config
.tv_mode_property
=
1570 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1572 if (!dev
->mode_config
.tv_mode_property
)
1575 for (i
= 0; i
< num_modes
; i
++)
1576 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1579 dev
->mode_config
.tv_brightness_property
=
1580 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1581 if (!dev
->mode_config
.tv_brightness_property
)
1584 dev
->mode_config
.tv_contrast_property
=
1585 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1586 if (!dev
->mode_config
.tv_contrast_property
)
1589 dev
->mode_config
.tv_flicker_reduction_property
=
1590 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1591 if (!dev
->mode_config
.tv_flicker_reduction_property
)
1594 dev
->mode_config
.tv_overscan_property
=
1595 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1596 if (!dev
->mode_config
.tv_overscan_property
)
1599 dev
->mode_config
.tv_saturation_property
=
1600 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1601 if (!dev
->mode_config
.tv_saturation_property
)
1604 dev
->mode_config
.tv_hue_property
=
1605 drm_property_create_range(dev
, 0, "hue", 0, 100);
1606 if (!dev
->mode_config
.tv_hue_property
)
1613 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1616 * drm_mode_create_scaling_mode_property - create scaling mode property
1619 * Called by a driver the first time it's needed, must be attached to desired
1622 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1624 struct drm_property
*scaling_mode
;
1626 if (dev
->mode_config
.scaling_mode_property
)
1630 drm_property_create_enum(dev
, 0, "scaling mode",
1631 drm_scaling_mode_enum_list
,
1632 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1634 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1638 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1641 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1644 * Called by a driver the first time it's needed, must be attached to desired
1648 * Zero on success, negative errno on failure.
1650 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1652 if (dev
->mode_config
.aspect_ratio_property
)
1655 dev
->mode_config
.aspect_ratio_property
=
1656 drm_property_create_enum(dev
, 0, "aspect ratio",
1657 drm_aspect_ratio_enum_list
,
1658 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1660 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1665 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1668 * drm_mode_create_dirty_property - create dirty property
1671 * Called by a driver the first time it's needed, must be attached to desired
1674 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1676 struct drm_property
*dirty_info
;
1678 if (dev
->mode_config
.dirty_info_property
)
1682 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1684 drm_dirty_info_enum_list
,
1685 ARRAY_SIZE(drm_dirty_info_enum_list
));
1686 dev
->mode_config
.dirty_info_property
= dirty_info
;
1690 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1693 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1696 * Create the the suggested x/y offset property for connectors.
1698 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1700 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1703 dev
->mode_config
.suggested_x_property
=
1704 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1706 dev
->mode_config
.suggested_y_property
=
1707 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1709 if (dev
->mode_config
.suggested_x_property
== NULL
||
1710 dev
->mode_config
.suggested_y_property
== NULL
)
1714 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1717 * drm_mode_getresources - get graphics configuration
1718 * @dev: drm device for the ioctl
1719 * @data: data pointer for the ioctl
1720 * @file_priv: drm file for the ioctl call
1722 * Construct a set of configuration description structures and return
1723 * them to the user, including CRTC, connector and framebuffer configuration.
1725 * Called by the user via ioctl.
1728 * Zero on success, negative errno on failure.
1730 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1731 struct drm_file
*file_priv
)
1733 struct drm_mode_card_res
*card_res
= data
;
1734 struct list_head
*lh
;
1735 struct drm_framebuffer
*fb
;
1736 struct drm_connector
*connector
;
1737 struct drm_crtc
*crtc
;
1738 struct drm_encoder
*encoder
;
1740 int connector_count
= 0;
1743 int encoder_count
= 0;
1745 uint32_t __user
*fb_id
;
1746 uint32_t __user
*crtc_id
;
1747 uint32_t __user
*connector_id
;
1748 uint32_t __user
*encoder_id
;
1750 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1754 mutex_lock(&file_priv
->fbs_lock
);
1756 * For the non-control nodes we need to limit the list of resources
1757 * by IDs in the group list for this node
1759 list_for_each(lh
, &file_priv
->fbs
)
1762 /* handle this in 4 parts */
1764 if (card_res
->count_fbs
>= fb_count
) {
1766 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1767 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1768 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1769 mutex_unlock(&file_priv
->fbs_lock
);
1775 card_res
->count_fbs
= fb_count
;
1776 mutex_unlock(&file_priv
->fbs_lock
);
1778 /* mode_config.mutex protects the connector list against e.g. DP MST
1779 * connector hot-adding. CRTC/Plane lists are invariant. */
1780 mutex_lock(&dev
->mode_config
.mutex
);
1781 drm_for_each_crtc(crtc
, dev
)
1784 drm_for_each_connector(connector
, dev
)
1787 drm_for_each_encoder(encoder
, dev
)
1790 card_res
->max_height
= dev
->mode_config
.max_height
;
1791 card_res
->min_height
= dev
->mode_config
.min_height
;
1792 card_res
->max_width
= dev
->mode_config
.max_width
;
1793 card_res
->min_width
= dev
->mode_config
.min_width
;
1796 if (card_res
->count_crtcs
>= crtc_count
) {
1798 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1799 drm_for_each_crtc(crtc
, dev
) {
1800 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1801 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1808 card_res
->count_crtcs
= crtc_count
;
1811 if (card_res
->count_encoders
>= encoder_count
) {
1813 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1814 drm_for_each_encoder(encoder
, dev
) {
1815 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1817 if (put_user(encoder
->base
.id
, encoder_id
+
1825 card_res
->count_encoders
= encoder_count
;
1828 if (card_res
->count_connectors
>= connector_count
) {
1830 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1831 drm_for_each_connector(connector
, dev
) {
1832 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1835 if (put_user(connector
->base
.id
,
1836 connector_id
+ copied
)) {
1843 card_res
->count_connectors
= connector_count
;
1845 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1846 card_res
->count_connectors
, card_res
->count_encoders
);
1849 mutex_unlock(&dev
->mode_config
.mutex
);
1854 * drm_mode_getcrtc - get CRTC configuration
1855 * @dev: drm device for the ioctl
1856 * @data: data pointer for the ioctl
1857 * @file_priv: drm file for the ioctl call
1859 * Construct a CRTC configuration structure to return to the user.
1861 * Called by the user via ioctl.
1864 * Zero on success, negative errno on failure.
1866 int drm_mode_getcrtc(struct drm_device
*dev
,
1867 void *data
, struct drm_file
*file_priv
)
1869 struct drm_mode_crtc
*crtc_resp
= data
;
1870 struct drm_crtc
*crtc
;
1872 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1875 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
1879 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
1880 crtc_resp
->gamma_size
= crtc
->gamma_size
;
1881 if (crtc
->primary
->fb
)
1882 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
1884 crtc_resp
->fb_id
= 0;
1887 crtc_resp
->x
= crtc
->primary
->state
->src_x
>> 16;
1888 crtc_resp
->y
= crtc
->primary
->state
->src_y
>> 16;
1889 if (crtc
->state
->enable
) {
1890 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->state
->mode
);
1891 crtc_resp
->mode_valid
= 1;
1894 crtc_resp
->mode_valid
= 0;
1897 crtc_resp
->x
= crtc
->x
;
1898 crtc_resp
->y
= crtc
->y
;
1899 if (crtc
->enabled
) {
1900 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
1901 crtc_resp
->mode_valid
= 1;
1904 crtc_resp
->mode_valid
= 0;
1907 drm_modeset_unlock_crtc(crtc
);
1912 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1913 const struct drm_file
*file_priv
)
1916 * If user-space hasn't configured the driver to expose the stereo 3D
1917 * modes, don't expose them.
1919 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
1925 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
1927 /* For atomic drivers only state objects are synchronously updated and
1928 * protected by modeset locks, so check those first. */
1929 if (connector
->state
)
1930 return connector
->state
->best_encoder
;
1931 return connector
->encoder
;
1934 /* helper for getconnector and getproperties ioctls */
1935 static int get_properties(struct drm_mode_object
*obj
, bool atomic
,
1936 uint32_t __user
*prop_ptr
, uint64_t __user
*prop_values
,
1937 uint32_t *arg_count_props
)
1942 props_count
= obj
->properties
->count
;
1944 props_count
-= obj
->properties
->atomic_count
;
1946 if ((*arg_count_props
>= props_count
) && props_count
) {
1947 for (i
= 0, copied
= 0; copied
< props_count
; i
++) {
1948 struct drm_property
*prop
= obj
->properties
->properties
[i
];
1951 if ((prop
->flags
& DRM_MODE_PROP_ATOMIC
) && !atomic
)
1954 ret
= drm_object_property_get_value(obj
, prop
, &val
);
1958 if (put_user(prop
->base
.id
, prop_ptr
+ copied
))
1961 if (put_user(val
, prop_values
+ copied
))
1967 *arg_count_props
= props_count
;
1973 * drm_mode_getconnector - get connector configuration
1974 * @dev: drm device for the ioctl
1975 * @data: data pointer for the ioctl
1976 * @file_priv: drm file for the ioctl call
1978 * Construct a connector configuration structure to return to the user.
1980 * Called by the user via ioctl.
1983 * Zero on success, negative errno on failure.
1985 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
1986 struct drm_file
*file_priv
)
1988 struct drm_mode_get_connector
*out_resp
= data
;
1989 struct drm_connector
*connector
;
1990 struct drm_encoder
*encoder
;
1991 struct drm_display_mode
*mode
;
1993 int encoders_count
= 0;
1997 struct drm_mode_modeinfo u_mode
;
1998 struct drm_mode_modeinfo __user
*mode_ptr
;
1999 uint32_t __user
*encoder_ptr
;
2001 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2004 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
2006 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
2008 mutex_lock(&dev
->mode_config
.mutex
);
2010 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
2016 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++)
2017 if (connector
->encoder_ids
[i
] != 0)
2020 if (out_resp
->count_modes
== 0) {
2021 connector
->funcs
->fill_modes(connector
,
2022 dev
->mode_config
.max_width
,
2023 dev
->mode_config
.max_height
);
2026 /* delayed so we get modes regardless of pre-fill_modes state */
2027 list_for_each_entry(mode
, &connector
->modes
, head
)
2028 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2031 out_resp
->connector_id
= connector
->base
.id
;
2032 out_resp
->connector_type
= connector
->connector_type
;
2033 out_resp
->connector_type_id
= connector
->connector_type_id
;
2034 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2035 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2036 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2037 out_resp
->connection
= connector
->status
;
2039 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2040 encoder
= drm_connector_get_encoder(connector
);
2042 out_resp
->encoder_id
= encoder
->base
.id
;
2044 out_resp
->encoder_id
= 0;
2047 * This ioctl is called twice, once to determine how much space is
2048 * needed, and the 2nd time to fill it.
2050 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2052 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2053 list_for_each_entry(mode
, &connector
->modes
, head
) {
2054 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2057 drm_mode_convert_to_umode(&u_mode
, mode
);
2058 if (copy_to_user(mode_ptr
+ copied
,
2059 &u_mode
, sizeof(u_mode
))) {
2066 out_resp
->count_modes
= mode_count
;
2068 ret
= get_properties(&connector
->base
, file_priv
->atomic
,
2069 (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
),
2070 (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
),
2071 &out_resp
->count_props
);
2075 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2077 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2078 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2079 if (connector
->encoder_ids
[i
] != 0) {
2080 if (put_user(connector
->encoder_ids
[i
],
2081 encoder_ptr
+ copied
)) {
2089 out_resp
->count_encoders
= encoders_count
;
2092 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2095 mutex_unlock(&dev
->mode_config
.mutex
);
2100 static struct drm_crtc
*drm_encoder_get_crtc(struct drm_encoder
*encoder
)
2102 struct drm_connector
*connector
;
2103 struct drm_device
*dev
= encoder
->dev
;
2104 bool uses_atomic
= false;
2106 /* For atomic drivers only state objects are synchronously updated and
2107 * protected by modeset locks, so check those first. */
2108 drm_for_each_connector(connector
, dev
) {
2109 if (!connector
->state
)
2114 if (connector
->state
->best_encoder
!= encoder
)
2117 return connector
->state
->crtc
;
2120 /* Don't return stale data (e.g. pending async disable). */
2124 return encoder
->crtc
;
2128 * drm_mode_getencoder - get encoder configuration
2129 * @dev: drm device for the ioctl
2130 * @data: data pointer for the ioctl
2131 * @file_priv: drm file for the ioctl call
2133 * Construct a encoder configuration structure to return to the user.
2135 * Called by the user via ioctl.
2138 * Zero on success, negative errno on failure.
2140 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2141 struct drm_file
*file_priv
)
2143 struct drm_mode_get_encoder
*enc_resp
= data
;
2144 struct drm_encoder
*encoder
;
2145 struct drm_crtc
*crtc
;
2147 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2150 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2154 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2155 crtc
= drm_encoder_get_crtc(encoder
);
2157 enc_resp
->crtc_id
= crtc
->base
.id
;
2159 enc_resp
->crtc_id
= 0;
2160 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2162 enc_resp
->encoder_type
= encoder
->encoder_type
;
2163 enc_resp
->encoder_id
= encoder
->base
.id
;
2164 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2165 enc_resp
->possible_clones
= encoder
->possible_clones
;
2171 * drm_mode_getplane_res - enumerate all plane resources
2174 * @file_priv: DRM file info
2176 * Construct a list of plane ids to return to the user.
2178 * Called by the user via ioctl.
2181 * Zero on success, negative errno on failure.
2183 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2184 struct drm_file
*file_priv
)
2186 struct drm_mode_get_plane_res
*plane_resp
= data
;
2187 struct drm_mode_config
*config
;
2188 struct drm_plane
*plane
;
2189 uint32_t __user
*plane_ptr
;
2191 unsigned num_planes
;
2193 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2196 config
= &dev
->mode_config
;
2198 if (file_priv
->universal_planes
)
2199 num_planes
= config
->num_total_plane
;
2201 num_planes
= config
->num_overlay_plane
;
2204 * This ioctl is called twice, once to determine how much space is
2205 * needed, and the 2nd time to fill it.
2208 (plane_resp
->count_planes
>= num_planes
)) {
2209 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2211 /* Plane lists are invariant, no locking needed. */
2212 drm_for_each_plane(plane
, dev
) {
2214 * Unless userspace set the 'universal planes'
2215 * capability bit, only advertise overlays.
2217 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2218 !file_priv
->universal_planes
)
2221 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2226 plane_resp
->count_planes
= num_planes
;
2232 * drm_mode_getplane - get plane configuration
2235 * @file_priv: DRM file info
2237 * Construct a plane configuration structure to return to the user.
2239 * Called by the user via ioctl.
2242 * Zero on success, negative errno on failure.
2244 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2245 struct drm_file
*file_priv
)
2247 struct drm_mode_get_plane
*plane_resp
= data
;
2248 struct drm_plane
*plane
;
2249 uint32_t __user
*format_ptr
;
2251 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2254 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2258 drm_modeset_lock(&plane
->mutex
, NULL
);
2260 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2262 plane_resp
->crtc_id
= 0;
2265 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2267 plane_resp
->fb_id
= 0;
2268 drm_modeset_unlock(&plane
->mutex
);
2270 plane_resp
->plane_id
= plane
->base
.id
;
2271 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2272 plane_resp
->gamma_size
= 0;
2275 * This ioctl is called twice, once to determine how much space is
2276 * needed, and the 2nd time to fill it.
2278 if (plane
->format_count
&&
2279 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2280 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2281 if (copy_to_user(format_ptr
,
2282 plane
->format_types
,
2283 sizeof(uint32_t) * plane
->format_count
)) {
2287 plane_resp
->count_format_types
= plane
->format_count
;
2293 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2294 * @plane: plane to check for format support
2295 * @format: the pixel format
2298 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2301 int drm_plane_check_pixel_format(const struct drm_plane
*plane
, u32 format
)
2305 for (i
= 0; i
< plane
->format_count
; i
++) {
2306 if (format
== plane
->format_types
[i
])
2313 static int check_src_coords(uint32_t src_x
, uint32_t src_y
,
2314 uint32_t src_w
, uint32_t src_h
,
2315 const struct drm_framebuffer
*fb
)
2317 unsigned int fb_width
, fb_height
;
2319 fb_width
= fb
->width
<< 16;
2320 fb_height
= fb
->height
<< 16;
2322 /* Make sure source coordinates are inside the fb. */
2323 if (src_w
> fb_width
||
2324 src_x
> fb_width
- src_w
||
2325 src_h
> fb_height
||
2326 src_y
> fb_height
- src_h
) {
2327 DRM_DEBUG_KMS("Invalid source coordinates "
2328 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2329 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2330 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2331 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2332 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2340 * setplane_internal - setplane handler for internal callers
2342 * Note that we assume an extra reference has already been taken on fb. If the
2343 * update fails, this reference will be dropped before return; if it succeeds,
2344 * the previous framebuffer (if any) will be unreferenced instead.
2346 * src_{x,y,w,h} are provided in 16.16 fixed point format
2348 static int __setplane_internal(struct drm_plane
*plane
,
2349 struct drm_crtc
*crtc
,
2350 struct drm_framebuffer
*fb
,
2351 int32_t crtc_x
, int32_t crtc_y
,
2352 uint32_t crtc_w
, uint32_t crtc_h
,
2353 /* src_{x,y,w,h} values are 16.16 fixed point */
2354 uint32_t src_x
, uint32_t src_y
,
2355 uint32_t src_w
, uint32_t src_h
)
2359 /* No fb means shut it down */
2361 plane
->old_fb
= plane
->fb
;
2362 ret
= plane
->funcs
->disable_plane(plane
);
2367 plane
->old_fb
= NULL
;
2372 /* Check whether this plane is usable on this CRTC */
2373 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2374 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2379 /* Check whether this plane supports the fb pixel format. */
2380 ret
= drm_plane_check_pixel_format(plane
, fb
->pixel_format
);
2382 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2383 drm_get_format_name(fb
->pixel_format
));
2387 /* Give drivers some help against integer overflows */
2388 if (crtc_w
> INT_MAX
||
2389 crtc_x
> INT_MAX
- (int32_t) crtc_w
||
2391 crtc_y
> INT_MAX
- (int32_t) crtc_h
) {
2392 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2393 crtc_w
, crtc_h
, crtc_x
, crtc_y
);
2398 ret
= check_src_coords(src_x
, src_y
, src_w
, src_h
, fb
);
2402 plane
->old_fb
= plane
->fb
;
2403 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2404 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2405 src_x
, src_y
, src_w
, src_h
);
2411 plane
->old_fb
= NULL
;
2416 drm_framebuffer_unreference(fb
);
2418 drm_framebuffer_unreference(plane
->old_fb
);
2419 plane
->old_fb
= NULL
;
2424 static int setplane_internal(struct drm_plane
*plane
,
2425 struct drm_crtc
*crtc
,
2426 struct drm_framebuffer
*fb
,
2427 int32_t crtc_x
, int32_t crtc_y
,
2428 uint32_t crtc_w
, uint32_t crtc_h
,
2429 /* src_{x,y,w,h} values are 16.16 fixed point */
2430 uint32_t src_x
, uint32_t src_y
,
2431 uint32_t src_w
, uint32_t src_h
)
2435 drm_modeset_lock_all(plane
->dev
);
2436 ret
= __setplane_internal(plane
, crtc
, fb
,
2437 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2438 src_x
, src_y
, src_w
, src_h
);
2439 drm_modeset_unlock_all(plane
->dev
);
2445 * drm_mode_setplane - configure a plane's configuration
2447 * @data: ioctl data*
2448 * @file_priv: DRM file info
2450 * Set plane configuration, including placement, fb, scaling, and other factors.
2451 * Or pass a NULL fb to disable (planes may be disabled without providing a
2455 * Zero on success, negative errno on failure.
2457 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2458 struct drm_file
*file_priv
)
2460 struct drm_mode_set_plane
*plane_req
= data
;
2461 struct drm_plane
*plane
;
2462 struct drm_crtc
*crtc
= NULL
;
2463 struct drm_framebuffer
*fb
= NULL
;
2465 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2469 * First, find the plane, crtc, and fb objects. If not available,
2470 * we don't bother to call the driver.
2472 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
2474 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2475 plane_req
->plane_id
);
2479 if (plane_req
->fb_id
) {
2480 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2482 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2487 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
2489 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2490 plane_req
->crtc_id
);
2496 * setplane_internal will take care of deref'ing either the old or new
2497 * framebuffer depending on success.
2499 return setplane_internal(plane
, crtc
, fb
,
2500 plane_req
->crtc_x
, plane_req
->crtc_y
,
2501 plane_req
->crtc_w
, plane_req
->crtc_h
,
2502 plane_req
->src_x
, plane_req
->src_y
,
2503 plane_req
->src_w
, plane_req
->src_h
);
2507 * drm_mode_set_config_internal - helper to call ->set_config
2508 * @set: modeset config to set
2510 * This is a little helper to wrap internal calls to the ->set_config driver
2511 * interface. The only thing it adds is correct refcounting dance.
2514 * Zero on success, negative errno on failure.
2516 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2518 struct drm_crtc
*crtc
= set
->crtc
;
2519 struct drm_framebuffer
*fb
;
2520 struct drm_crtc
*tmp
;
2524 * NOTE: ->set_config can also disable other crtcs (if we steal all
2525 * connectors from it), hence we need to refcount the fbs across all
2526 * crtcs. Atomic modeset will have saner semantics ...
2528 drm_for_each_crtc(tmp
, crtc
->dev
)
2529 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2533 ret
= crtc
->funcs
->set_config(set
);
2535 crtc
->primary
->crtc
= crtc
;
2536 crtc
->primary
->fb
= fb
;
2539 drm_for_each_crtc(tmp
, crtc
->dev
) {
2540 if (tmp
->primary
->fb
)
2541 drm_framebuffer_reference(tmp
->primary
->fb
);
2542 if (tmp
->primary
->old_fb
)
2543 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2544 tmp
->primary
->old_fb
= NULL
;
2549 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2552 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2553 * @mode: mode to query
2554 * @hdisplay: hdisplay value to fill in
2555 * @vdisplay: vdisplay value to fill in
2557 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2558 * the appropriate layout.
2560 void drm_crtc_get_hv_timing(const struct drm_display_mode
*mode
,
2561 int *hdisplay
, int *vdisplay
)
2563 struct drm_display_mode adjusted
;
2565 drm_mode_copy(&adjusted
, mode
);
2566 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE_ONLY
);
2567 *hdisplay
= adjusted
.crtc_hdisplay
;
2568 *vdisplay
= adjusted
.crtc_vdisplay
;
2570 EXPORT_SYMBOL(drm_crtc_get_hv_timing
);
2573 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2575 * @crtc: CRTC that framebuffer will be displayed on
2578 * @mode: mode that framebuffer will be displayed under
2579 * @fb: framebuffer to check size of
2581 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2583 const struct drm_display_mode
*mode
,
2584 const struct drm_framebuffer
*fb
)
2587 int hdisplay
, vdisplay
;
2589 drm_crtc_get_hv_timing(mode
, &hdisplay
, &vdisplay
);
2592 crtc
->primary
->state
->rotation
& (BIT(DRM_ROTATE_90
) |
2593 BIT(DRM_ROTATE_270
)))
2594 swap(hdisplay
, vdisplay
);
2596 return check_src_coords(x
<< 16, y
<< 16,
2597 hdisplay
<< 16, vdisplay
<< 16, fb
);
2599 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2602 * drm_mode_setcrtc - set CRTC configuration
2603 * @dev: drm device for the ioctl
2604 * @data: data pointer for the ioctl
2605 * @file_priv: drm file for the ioctl call
2607 * Build a new CRTC configuration based on user request.
2609 * Called by the user via ioctl.
2612 * Zero on success, negative errno on failure.
2614 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2615 struct drm_file
*file_priv
)
2617 struct drm_mode_config
*config
= &dev
->mode_config
;
2618 struct drm_mode_crtc
*crtc_req
= data
;
2619 struct drm_crtc
*crtc
;
2620 struct drm_connector
**connector_set
= NULL
, *connector
;
2621 struct drm_framebuffer
*fb
= NULL
;
2622 struct drm_display_mode
*mode
= NULL
;
2623 struct drm_mode_set set
;
2624 uint32_t __user
*set_connectors_ptr
;
2628 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2632 * Universal plane src offsets are only 16.16, prevent havoc for
2633 * drivers using universal plane code internally.
2635 if (crtc_req
->x
& 0xffff0000 || crtc_req
->y
& 0xffff0000)
2638 drm_modeset_lock_all(dev
);
2639 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2641 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2645 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2647 if (crtc_req
->mode_valid
) {
2648 /* If we have a mode we need a framebuffer. */
2649 /* If we pass -1, set the mode with the currently bound fb */
2650 if (crtc_req
->fb_id
== -1) {
2651 if (!crtc
->primary
->fb
) {
2652 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2656 fb
= crtc
->primary
->fb
;
2657 /* Make refcounting symmetric with the lookup path. */
2658 drm_framebuffer_reference(fb
);
2660 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2662 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2669 mode
= drm_mode_create(dev
);
2675 ret
= drm_mode_convert_umode(mode
, &crtc_req
->mode
);
2677 DRM_DEBUG_KMS("Invalid mode\n");
2681 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2684 * Check whether the primary plane supports the fb pixel format.
2685 * Drivers not implementing the universal planes API use a
2686 * default formats list provided by the DRM core which doesn't
2687 * match real hardware capabilities. Skip the check in that
2690 if (!crtc
->primary
->format_default
) {
2691 ret
= drm_plane_check_pixel_format(crtc
->primary
,
2694 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2695 drm_get_format_name(fb
->pixel_format
));
2700 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2707 if (crtc_req
->count_connectors
== 0 && mode
) {
2708 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2713 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2714 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2715 crtc_req
->count_connectors
);
2720 if (crtc_req
->count_connectors
> 0) {
2723 /* Avoid unbounded kernel memory allocation */
2724 if (crtc_req
->count_connectors
> config
->num_connector
) {
2729 connector_set
= kmalloc(crtc_req
->count_connectors
*
2730 sizeof(struct drm_connector
*),
2732 if (!connector_set
) {
2737 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2738 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2739 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2744 connector
= drm_connector_find(dev
, out_id
);
2746 DRM_DEBUG_KMS("Connector id %d unknown\n",
2751 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2755 connector_set
[i
] = connector
;
2760 set
.x
= crtc_req
->x
;
2761 set
.y
= crtc_req
->y
;
2763 set
.connectors
= connector_set
;
2764 set
.num_connectors
= crtc_req
->count_connectors
;
2766 ret
= drm_mode_set_config_internal(&set
);
2770 drm_framebuffer_unreference(fb
);
2772 kfree(connector_set
);
2773 drm_mode_destroy(dev
, mode
);
2774 drm_modeset_unlock_all(dev
);
2779 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2780 * universal plane handler call
2781 * @crtc: crtc to update cursor for
2782 * @req: data pointer for the ioctl
2783 * @file_priv: drm file for the ioctl call
2785 * Legacy cursor ioctl's work directly with driver buffer handles. To
2786 * translate legacy ioctl calls into universal plane handler calls, we need to
2787 * wrap the native buffer handle in a drm_framebuffer.
2789 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2790 * buffer with a pitch of 4*width; the universal plane interface should be used
2791 * directly in cases where the hardware can support other buffer settings and
2792 * userspace wants to make use of these capabilities.
2795 * Zero on success, negative errno on failure.
2797 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2798 struct drm_mode_cursor2
*req
,
2799 struct drm_file
*file_priv
)
2801 struct drm_device
*dev
= crtc
->dev
;
2802 struct drm_framebuffer
*fb
= NULL
;
2803 struct drm_mode_fb_cmd2 fbreq
= {
2804 .width
= req
->width
,
2805 .height
= req
->height
,
2806 .pixel_format
= DRM_FORMAT_ARGB8888
,
2807 .pitches
= { req
->width
* 4 },
2808 .handles
= { req
->handle
},
2810 int32_t crtc_x
, crtc_y
;
2811 uint32_t crtc_w
= 0, crtc_h
= 0;
2812 uint32_t src_w
= 0, src_h
= 0;
2815 BUG_ON(!crtc
->cursor
);
2816 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2819 * Obtain fb we'll be using (either new or existing) and take an extra
2820 * reference to it if fb != null. setplane will take care of dropping
2821 * the reference if the plane update fails.
2823 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2825 fb
= internal_framebuffer_create(dev
, &fbreq
, file_priv
);
2827 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2834 fb
= crtc
->cursor
->fb
;
2836 drm_framebuffer_reference(fb
);
2839 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2843 crtc_x
= crtc
->cursor_x
;
2844 crtc_y
= crtc
->cursor_y
;
2849 crtc_h
= fb
->height
;
2850 src_w
= fb
->width
<< 16;
2851 src_h
= fb
->height
<< 16;
2855 * setplane_internal will take care of deref'ing either the old or new
2856 * framebuffer depending on success.
2858 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2859 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2860 0, 0, src_w
, src_h
);
2862 /* Update successful; save new cursor position, if necessary */
2863 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2864 crtc
->cursor_x
= req
->x
;
2865 crtc
->cursor_y
= req
->y
;
2871 static int drm_mode_cursor_common(struct drm_device
*dev
,
2872 struct drm_mode_cursor2
*req
,
2873 struct drm_file
*file_priv
)
2875 struct drm_crtc
*crtc
;
2878 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2881 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2884 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2886 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2891 * If this crtc has a universal cursor plane, call that plane's update
2892 * handler rather than using legacy cursor handlers.
2894 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
2896 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2900 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2901 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2905 /* Turns off the cursor if handle is 0 */
2906 if (crtc
->funcs
->cursor_set2
)
2907 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2908 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2910 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2911 req
->width
, req
->height
);
2914 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2915 if (crtc
->funcs
->cursor_move
) {
2916 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
2923 drm_modeset_unlock_crtc(crtc
);
2931 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2932 * @dev: drm device for the ioctl
2933 * @data: data pointer for the ioctl
2934 * @file_priv: drm file for the ioctl call
2936 * Set the cursor configuration based on user request.
2938 * Called by the user via ioctl.
2941 * Zero on success, negative errno on failure.
2943 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
2944 void *data
, struct drm_file
*file_priv
)
2946 struct drm_mode_cursor
*req
= data
;
2947 struct drm_mode_cursor2 new_req
;
2949 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
2950 new_req
.hot_x
= new_req
.hot_y
= 0;
2952 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
2956 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2957 * @dev: drm device for the ioctl
2958 * @data: data pointer for the ioctl
2959 * @file_priv: drm file for the ioctl call
2961 * Set the cursor configuration based on user request. This implements the 2nd
2962 * version of the cursor ioctl, which allows userspace to additionally specify
2963 * the hotspot of the pointer.
2965 * Called by the user via ioctl.
2968 * Zero on success, negative errno on failure.
2970 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
2971 void *data
, struct drm_file
*file_priv
)
2973 struct drm_mode_cursor2
*req
= data
;
2975 return drm_mode_cursor_common(dev
, req
, file_priv
);
2979 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2980 * @bpp: bits per pixels
2981 * @depth: bit depth per pixel
2983 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2984 * Useful in fbdev emulation code, since that deals in those values.
2986 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
2992 fmt
= DRM_FORMAT_C8
;
2996 fmt
= DRM_FORMAT_XRGB1555
;
2998 fmt
= DRM_FORMAT_RGB565
;
3001 fmt
= DRM_FORMAT_RGB888
;
3005 fmt
= DRM_FORMAT_XRGB8888
;
3006 else if (depth
== 30)
3007 fmt
= DRM_FORMAT_XRGB2101010
;
3009 fmt
= DRM_FORMAT_ARGB8888
;
3012 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3013 fmt
= DRM_FORMAT_XRGB8888
;
3019 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
3022 * drm_mode_addfb - add an FB to the graphics configuration
3023 * @dev: drm device for the ioctl
3024 * @data: data pointer for the ioctl
3025 * @file_priv: drm file for the ioctl call
3027 * Add a new FB to the specified CRTC, given a user request. This is the
3028 * original addfb ioctl which only supported RGB formats.
3030 * Called by the user via ioctl.
3033 * Zero on success, negative errno on failure.
3035 int drm_mode_addfb(struct drm_device
*dev
,
3036 void *data
, struct drm_file
*file_priv
)
3038 struct drm_mode_fb_cmd
*or = data
;
3039 struct drm_mode_fb_cmd2 r
= {};
3042 /* convert to new format and call new ioctl */
3043 r
.fb_id
= or->fb_id
;
3044 r
.width
= or->width
;
3045 r
.height
= or->height
;
3046 r
.pitches
[0] = or->pitch
;
3047 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
3048 r
.handles
[0] = or->handle
;
3050 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
3054 or->fb_id
= r
.fb_id
;
3059 static int format_check(const struct drm_mode_fb_cmd2
*r
)
3061 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3065 case DRM_FORMAT_RGB332
:
3066 case DRM_FORMAT_BGR233
:
3067 case DRM_FORMAT_XRGB4444
:
3068 case DRM_FORMAT_XBGR4444
:
3069 case DRM_FORMAT_RGBX4444
:
3070 case DRM_FORMAT_BGRX4444
:
3071 case DRM_FORMAT_ARGB4444
:
3072 case DRM_FORMAT_ABGR4444
:
3073 case DRM_FORMAT_RGBA4444
:
3074 case DRM_FORMAT_BGRA4444
:
3075 case DRM_FORMAT_XRGB1555
:
3076 case DRM_FORMAT_XBGR1555
:
3077 case DRM_FORMAT_RGBX5551
:
3078 case DRM_FORMAT_BGRX5551
:
3079 case DRM_FORMAT_ARGB1555
:
3080 case DRM_FORMAT_ABGR1555
:
3081 case DRM_FORMAT_RGBA5551
:
3082 case DRM_FORMAT_BGRA5551
:
3083 case DRM_FORMAT_RGB565
:
3084 case DRM_FORMAT_BGR565
:
3085 case DRM_FORMAT_RGB888
:
3086 case DRM_FORMAT_BGR888
:
3087 case DRM_FORMAT_XRGB8888
:
3088 case DRM_FORMAT_XBGR8888
:
3089 case DRM_FORMAT_RGBX8888
:
3090 case DRM_FORMAT_BGRX8888
:
3091 case DRM_FORMAT_ARGB8888
:
3092 case DRM_FORMAT_ABGR8888
:
3093 case DRM_FORMAT_RGBA8888
:
3094 case DRM_FORMAT_BGRA8888
:
3095 case DRM_FORMAT_XRGB2101010
:
3096 case DRM_FORMAT_XBGR2101010
:
3097 case DRM_FORMAT_RGBX1010102
:
3098 case DRM_FORMAT_BGRX1010102
:
3099 case DRM_FORMAT_ARGB2101010
:
3100 case DRM_FORMAT_ABGR2101010
:
3101 case DRM_FORMAT_RGBA1010102
:
3102 case DRM_FORMAT_BGRA1010102
:
3103 case DRM_FORMAT_YUYV
:
3104 case DRM_FORMAT_YVYU
:
3105 case DRM_FORMAT_UYVY
:
3106 case DRM_FORMAT_VYUY
:
3107 case DRM_FORMAT_AYUV
:
3108 case DRM_FORMAT_NV12
:
3109 case DRM_FORMAT_NV21
:
3110 case DRM_FORMAT_NV16
:
3111 case DRM_FORMAT_NV61
:
3112 case DRM_FORMAT_NV24
:
3113 case DRM_FORMAT_NV42
:
3114 case DRM_FORMAT_YUV410
:
3115 case DRM_FORMAT_YVU410
:
3116 case DRM_FORMAT_YUV411
:
3117 case DRM_FORMAT_YVU411
:
3118 case DRM_FORMAT_YUV420
:
3119 case DRM_FORMAT_YVU420
:
3120 case DRM_FORMAT_YUV422
:
3121 case DRM_FORMAT_YVU422
:
3122 case DRM_FORMAT_YUV444
:
3123 case DRM_FORMAT_YVU444
:
3126 DRM_DEBUG_KMS("invalid pixel format %s\n",
3127 drm_get_format_name(r
->pixel_format
));
3132 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3134 int ret
, hsub
, vsub
, num_planes
, i
;
3136 ret
= format_check(r
);
3138 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3139 drm_get_format_name(r
->pixel_format
));
3143 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3144 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3145 num_planes
= drm_format_num_planes(r
->pixel_format
);
3147 if (r
->width
== 0 || r
->width
% hsub
) {
3148 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3152 if (r
->height
== 0 || r
->height
% vsub
) {
3153 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3157 for (i
= 0; i
< num_planes
; i
++) {
3158 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3159 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3160 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3162 if (!r
->handles
[i
]) {
3163 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3167 if ((uint64_t) width
* cpp
> UINT_MAX
)
3170 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3173 if (r
->pitches
[i
] < width
* cpp
) {
3174 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3178 if (r
->modifier
[i
] && !(r
->flags
& DRM_MODE_FB_MODIFIERS
)) {
3179 DRM_DEBUG_KMS("bad fb modifier %lu for plane %d\n",
3184 /* modifier specific checks: */
3185 switch (r
->modifier
[i
]) {
3186 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE
:
3187 /* NOTE: the pitch restriction may be lifted later if it turns
3188 * out that no hw has this restriction:
3190 if (r
->pixel_format
!= DRM_FORMAT_NV12
||
3191 width
% 128 || height
% 32 ||
3192 r
->pitches
[i
] % 128) {
3193 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i
);
3203 for (i
= num_planes
; i
< 4; i
++) {
3204 if (r
->modifier
[i
]) {
3205 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i
);
3209 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3210 if (!(r
->flags
& DRM_MODE_FB_MODIFIERS
))
3213 if (r
->handles
[i
]) {
3214 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i
);
3218 if (r
->pitches
[i
]) {
3219 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i
);
3223 if (r
->offsets
[i
]) {
3224 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i
);
3232 static struct drm_framebuffer
*
3233 internal_framebuffer_create(struct drm_device
*dev
,
3234 struct drm_mode_fb_cmd2
*r
,
3235 struct drm_file
*file_priv
)
3237 struct drm_mode_config
*config
= &dev
->mode_config
;
3238 struct drm_framebuffer
*fb
;
3241 if (r
->flags
& ~(DRM_MODE_FB_INTERLACED
| DRM_MODE_FB_MODIFIERS
)) {
3242 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3243 return ERR_PTR(-EINVAL
);
3246 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3247 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3248 r
->width
, config
->min_width
, config
->max_width
);
3249 return ERR_PTR(-EINVAL
);
3251 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3252 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3253 r
->height
, config
->min_height
, config
->max_height
);
3254 return ERR_PTR(-EINVAL
);
3257 if (r
->flags
& DRM_MODE_FB_MODIFIERS
&&
3258 !dev
->mode_config
.allow_fb_modifiers
) {
3259 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3260 return ERR_PTR(-EINVAL
);
3263 ret
= framebuffer_check(r
);
3265 return ERR_PTR(ret
);
3267 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3269 DRM_DEBUG_KMS("could not create framebuffer\n");
3277 * drm_mode_addfb2 - add an FB to the graphics configuration
3278 * @dev: drm device for the ioctl
3279 * @data: data pointer for the ioctl
3280 * @file_priv: drm file for the ioctl call
3282 * Add a new FB to the specified CRTC, given a user request with format. This is
3283 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3284 * and uses fourcc codes as pixel format specifiers.
3286 * Called by the user via ioctl.
3289 * Zero on success, negative errno on failure.
3291 int drm_mode_addfb2(struct drm_device
*dev
,
3292 void *data
, struct drm_file
*file_priv
)
3294 struct drm_mode_fb_cmd2
*r
= data
;
3295 struct drm_framebuffer
*fb
;
3297 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3300 fb
= internal_framebuffer_create(dev
, r
, file_priv
);
3304 /* Transfer ownership to the filp for reaping on close */
3306 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3307 mutex_lock(&file_priv
->fbs_lock
);
3308 r
->fb_id
= fb
->base
.id
;
3309 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3310 mutex_unlock(&file_priv
->fbs_lock
);
3316 * drm_mode_rmfb - remove an FB from the configuration
3317 * @dev: drm device for the ioctl
3318 * @data: data pointer for the ioctl
3319 * @file_priv: drm file for the ioctl call
3321 * Remove the FB specified by the user.
3323 * Called by the user via ioctl.
3326 * Zero on success, negative errno on failure.
3328 int drm_mode_rmfb(struct drm_device
*dev
,
3329 void *data
, struct drm_file
*file_priv
)
3331 struct drm_framebuffer
*fb
= NULL
;
3332 struct drm_framebuffer
*fbl
= NULL
;
3333 uint32_t *id
= data
;
3336 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3339 mutex_lock(&file_priv
->fbs_lock
);
3340 mutex_lock(&dev
->mode_config
.fb_lock
);
3341 fb
= __drm_framebuffer_lookup(dev
, *id
);
3345 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3351 list_del_init(&fb
->filp_head
);
3352 mutex_unlock(&dev
->mode_config
.fb_lock
);
3353 mutex_unlock(&file_priv
->fbs_lock
);
3355 drm_framebuffer_unreference(fb
);
3360 mutex_unlock(&dev
->mode_config
.fb_lock
);
3361 mutex_unlock(&file_priv
->fbs_lock
);
3367 * drm_mode_getfb - get FB info
3368 * @dev: drm device for the ioctl
3369 * @data: data pointer for the ioctl
3370 * @file_priv: drm file for the ioctl call
3372 * Lookup the FB given its ID and return info about it.
3374 * Called by the user via ioctl.
3377 * Zero on success, negative errno on failure.
3379 int drm_mode_getfb(struct drm_device
*dev
,
3380 void *data
, struct drm_file
*file_priv
)
3382 struct drm_mode_fb_cmd
*r
= data
;
3383 struct drm_framebuffer
*fb
;
3386 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3389 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3393 r
->height
= fb
->height
;
3394 r
->width
= fb
->width
;
3395 r
->depth
= fb
->depth
;
3396 r
->bpp
= fb
->bits_per_pixel
;
3397 r
->pitch
= fb
->pitches
[0];
3398 if (fb
->funcs
->create_handle
) {
3399 ret
= fb
->funcs
->create_handle(fb
, file_priv
, &r
->handle
);
3404 drm_framebuffer_unreference(fb
);
3410 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3411 * @dev: drm device for the ioctl
3412 * @data: data pointer for the ioctl
3413 * @file_priv: drm file for the ioctl call
3415 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3416 * rectangle list. Generic userspace which does frontbuffer rendering must call
3417 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3418 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3420 * Modesetting drivers which always update the frontbuffer do not need to
3421 * implement the corresponding ->dirty framebuffer callback.
3423 * Called by the user via ioctl.
3426 * Zero on success, negative errno on failure.
3428 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3429 void *data
, struct drm_file
*file_priv
)
3431 struct drm_clip_rect __user
*clips_ptr
;
3432 struct drm_clip_rect
*clips
= NULL
;
3433 struct drm_mode_fb_dirty_cmd
*r
= data
;
3434 struct drm_framebuffer
*fb
;
3439 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3442 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3446 num_clips
= r
->num_clips
;
3447 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3449 if (!num_clips
!= !clips_ptr
) {
3454 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3456 /* If userspace annotates copy, clips must come in pairs */
3457 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3462 if (num_clips
&& clips_ptr
) {
3463 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3467 clips
= kcalloc(num_clips
, sizeof(*clips
), GFP_KERNEL
);
3473 ret
= copy_from_user(clips
, clips_ptr
,
3474 num_clips
* sizeof(*clips
));
3481 if (fb
->funcs
->dirty
) {
3482 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3491 drm_framebuffer_unreference(fb
);
3498 * drm_fb_release - remove and free the FBs on this file
3499 * @priv: drm file for the ioctl
3501 * Destroy all the FBs associated with @filp.
3503 * Called by the user via ioctl.
3506 * Zero on success, negative errno on failure.
3508 void drm_fb_release(struct drm_file
*priv
)
3510 struct drm_framebuffer
*fb
, *tfb
;
3513 * When the file gets released that means no one else can access the fb
3514 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3515 * avoid upsetting lockdep since the universal cursor code adds a
3516 * framebuffer while holding mutex locks.
3518 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3519 * locks is impossible here since no one else but this function can get
3522 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3523 list_del_init(&fb
->filp_head
);
3525 /* This drops the fpriv->fbs reference. */
3526 drm_framebuffer_unreference(fb
);
3531 * drm_property_create - create a new property type
3533 * @flags: flags specifying the property type
3534 * @name: name of the property
3535 * @num_values: number of pre-defined values
3537 * This creates a new generic drm property which can then be attached to a drm
3538 * object with drm_object_attach_property. The returned property object must be
3539 * freed with drm_property_destroy.
3541 * Note that the DRM core keeps a per-device list of properties and that, if
3542 * drm_mode_config_cleanup() is called, it will destroy all properties created
3546 * A pointer to the newly created property on success, NULL on failure.
3548 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3549 const char *name
, int num_values
)
3551 struct drm_property
*property
= NULL
;
3554 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3558 property
->dev
= dev
;
3561 property
->values
= kcalloc(num_values
, sizeof(uint64_t),
3563 if (!property
->values
)
3567 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3571 property
->flags
= flags
;
3572 property
->num_values
= num_values
;
3573 INIT_LIST_HEAD(&property
->enum_list
);
3576 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3577 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3580 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3582 WARN_ON(!drm_property_type_valid(property
));
3586 kfree(property
->values
);
3590 EXPORT_SYMBOL(drm_property_create
);
3593 * drm_property_create_enum - create a new enumeration property type
3595 * @flags: flags specifying the property type
3596 * @name: name of the property
3597 * @props: enumeration lists with property values
3598 * @num_values: number of pre-defined values
3600 * This creates a new generic drm property which can then be attached to a drm
3601 * object with drm_object_attach_property. The returned property object must be
3602 * freed with drm_property_destroy.
3604 * Userspace is only allowed to set one of the predefined values for enumeration
3608 * A pointer to the newly created property on success, NULL on failure.
3610 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3612 const struct drm_prop_enum_list
*props
,
3615 struct drm_property
*property
;
3618 flags
|= DRM_MODE_PROP_ENUM
;
3620 property
= drm_property_create(dev
, flags
, name
, num_values
);
3624 for (i
= 0; i
< num_values
; i
++) {
3625 ret
= drm_property_add_enum(property
, i
,
3629 drm_property_destroy(dev
, property
);
3636 EXPORT_SYMBOL(drm_property_create_enum
);
3639 * drm_property_create_bitmask - create a new bitmask property type
3641 * @flags: flags specifying the property type
3642 * @name: name of the property
3643 * @props: enumeration lists with property bitflags
3644 * @num_props: size of the @props array
3645 * @supported_bits: bitmask of all supported enumeration values
3647 * This creates a new bitmask drm property which can then be attached to a drm
3648 * object with drm_object_attach_property. The returned property object must be
3649 * freed with drm_property_destroy.
3651 * Compared to plain enumeration properties userspace is allowed to set any
3652 * or'ed together combination of the predefined property bitflag values
3655 * A pointer to the newly created property on success, NULL on failure.
3657 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3658 int flags
, const char *name
,
3659 const struct drm_prop_enum_list
*props
,
3661 uint64_t supported_bits
)
3663 struct drm_property
*property
;
3664 int i
, ret
, index
= 0;
3665 int num_values
= hweight64(supported_bits
);
3667 flags
|= DRM_MODE_PROP_BITMASK
;
3669 property
= drm_property_create(dev
, flags
, name
, num_values
);
3672 for (i
= 0; i
< num_props
; i
++) {
3673 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3676 if (WARN_ON(index
>= num_values
)) {
3677 drm_property_destroy(dev
, property
);
3681 ret
= drm_property_add_enum(property
, index
++,
3685 drm_property_destroy(dev
, property
);
3692 EXPORT_SYMBOL(drm_property_create_bitmask
);
3694 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3695 int flags
, const char *name
,
3696 uint64_t min
, uint64_t max
)
3698 struct drm_property
*property
;
3700 property
= drm_property_create(dev
, flags
, name
, 2);
3704 property
->values
[0] = min
;
3705 property
->values
[1] = max
;
3711 * drm_property_create_range - create a new unsigned ranged property type
3713 * @flags: flags specifying the property type
3714 * @name: name of the property
3715 * @min: minimum value of the property
3716 * @max: maximum value of the property
3718 * This creates a new generic drm property which can then be attached to a drm
3719 * object with drm_object_attach_property. The returned property object must be
3720 * freed with drm_property_destroy.
3722 * Userspace is allowed to set any unsigned integer value in the (min, max)
3726 * A pointer to the newly created property on success, NULL on failure.
3728 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3730 uint64_t min
, uint64_t max
)
3732 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3735 EXPORT_SYMBOL(drm_property_create_range
);
3738 * drm_property_create_signed_range - create a new signed ranged property type
3740 * @flags: flags specifying the property type
3741 * @name: name of the property
3742 * @min: minimum value of the property
3743 * @max: maximum value of the property
3745 * This creates a new generic drm property which can then be attached to a drm
3746 * object with drm_object_attach_property. The returned property object must be
3747 * freed with drm_property_destroy.
3749 * Userspace is allowed to set any signed integer value in the (min, max)
3753 * A pointer to the newly created property on success, NULL on failure.
3755 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3756 int flags
, const char *name
,
3757 int64_t min
, int64_t max
)
3759 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3760 name
, I642U64(min
), I642U64(max
));
3762 EXPORT_SYMBOL(drm_property_create_signed_range
);
3765 * drm_property_create_object - create a new object property type
3767 * @flags: flags specifying the property type
3768 * @name: name of the property
3769 * @type: object type from DRM_MODE_OBJECT_* defines
3771 * This creates a new generic drm property which can then be attached to a drm
3772 * object with drm_object_attach_property. The returned property object must be
3773 * freed with drm_property_destroy.
3775 * Userspace is only allowed to set this to any property value of the given
3776 * @type. Only useful for atomic properties, which is enforced.
3779 * A pointer to the newly created property on success, NULL on failure.
3781 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3782 int flags
, const char *name
, uint32_t type
)
3784 struct drm_property
*property
;
3786 flags
|= DRM_MODE_PROP_OBJECT
;
3788 if (WARN_ON(!(flags
& DRM_MODE_PROP_ATOMIC
)))
3791 property
= drm_property_create(dev
, flags
, name
, 1);
3795 property
->values
[0] = type
;
3799 EXPORT_SYMBOL(drm_property_create_object
);
3802 * drm_property_create_bool - create a new boolean property type
3804 * @flags: flags specifying the property type
3805 * @name: name of the property
3807 * This creates a new generic drm property which can then be attached to a drm
3808 * object with drm_object_attach_property. The returned property object must be
3809 * freed with drm_property_destroy.
3811 * This is implemented as a ranged property with only {0, 1} as valid values.
3814 * A pointer to the newly created property on success, NULL on failure.
3816 struct drm_property
*drm_property_create_bool(struct drm_device
*dev
, int flags
,
3819 return drm_property_create_range(dev
, flags
, name
, 0, 1);
3821 EXPORT_SYMBOL(drm_property_create_bool
);
3824 * drm_property_add_enum - add a possible value to an enumeration property
3825 * @property: enumeration property to change
3826 * @index: index of the new enumeration
3827 * @value: value of the new enumeration
3828 * @name: symbolic name of the new enumeration
3830 * This functions adds enumerations to a property.
3832 * It's use is deprecated, drivers should use one of the more specific helpers
3833 * to directly create the property with all enumerations already attached.
3836 * Zero on success, error code on failure.
3838 int drm_property_add_enum(struct drm_property
*property
, int index
,
3839 uint64_t value
, const char *name
)
3841 struct drm_property_enum
*prop_enum
;
3843 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3844 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3848 * Bitmask enum properties have the additional constraint of values
3851 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3855 if (!list_empty(&property
->enum_list
)) {
3856 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3857 if (prop_enum
->value
== value
) {
3858 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3859 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3865 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3869 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3870 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3871 prop_enum
->value
= value
;
3873 property
->values
[index
] = value
;
3874 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
3877 EXPORT_SYMBOL(drm_property_add_enum
);
3880 * drm_property_destroy - destroy a drm property
3882 * @property: property to destry
3884 * This function frees a property including any attached resources like
3885 * enumeration values.
3887 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3889 struct drm_property_enum
*prop_enum
, *pt
;
3891 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
3892 list_del(&prop_enum
->head
);
3896 if (property
->num_values
)
3897 kfree(property
->values
);
3898 drm_mode_object_put(dev
, &property
->base
);
3899 list_del(&property
->head
);
3902 EXPORT_SYMBOL(drm_property_destroy
);
3905 * drm_object_attach_property - attach a property to a modeset object
3906 * @obj: drm modeset object
3907 * @property: property to attach
3908 * @init_val: initial value of the property
3910 * This attaches the given property to the modeset object with the given initial
3911 * value. Currently this function cannot fail since the properties are stored in
3912 * a statically sized array.
3914 void drm_object_attach_property(struct drm_mode_object
*obj
,
3915 struct drm_property
*property
,
3918 int count
= obj
->properties
->count
;
3920 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3921 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3922 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3923 "you see this message on the same object type.\n",
3928 obj
->properties
->properties
[count
] = property
;
3929 obj
->properties
->values
[count
] = init_val
;
3930 obj
->properties
->count
++;
3931 if (property
->flags
& DRM_MODE_PROP_ATOMIC
)
3932 obj
->properties
->atomic_count
++;
3934 EXPORT_SYMBOL(drm_object_attach_property
);
3937 * drm_object_property_set_value - set the value of a property
3938 * @obj: drm mode object to set property value for
3939 * @property: property to set
3940 * @val: value the property should be set to
3942 * This functions sets a given property on a given object. This function only
3943 * changes the software state of the property, it does not call into the
3944 * driver's ->set_property callback.
3947 * Zero on success, error code on failure.
3949 int drm_object_property_set_value(struct drm_mode_object
*obj
,
3950 struct drm_property
*property
, uint64_t val
)
3954 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3955 if (obj
->properties
->properties
[i
] == property
) {
3956 obj
->properties
->values
[i
] = val
;
3963 EXPORT_SYMBOL(drm_object_property_set_value
);
3966 * drm_object_property_get_value - retrieve the value of a property
3967 * @obj: drm mode object to get property value from
3968 * @property: property to retrieve
3969 * @val: storage for the property value
3971 * This function retrieves the softare state of the given property for the given
3972 * property. Since there is no driver callback to retrieve the current property
3973 * value this might be out of sync with the hardware, depending upon the driver
3977 * Zero on success, error code on failure.
3979 int drm_object_property_get_value(struct drm_mode_object
*obj
,
3980 struct drm_property
*property
, uint64_t *val
)
3984 /* read-only properties bypass atomic mechanism and still store
3985 * their value in obj->properties->values[].. mostly to avoid
3986 * having to deal w/ EDID and similar props in atomic paths:
3988 if (drm_core_check_feature(property
->dev
, DRIVER_ATOMIC
) &&
3989 !(property
->flags
& DRM_MODE_PROP_IMMUTABLE
))
3990 return drm_atomic_get_property(obj
, property
, val
);
3992 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3993 if (obj
->properties
->properties
[i
] == property
) {
3994 *val
= obj
->properties
->values
[i
];
4001 EXPORT_SYMBOL(drm_object_property_get_value
);
4004 * drm_mode_getproperty_ioctl - get the property metadata
4007 * @file_priv: DRM file info
4009 * This function retrieves the metadata for a given property, like the different
4010 * possible values for an enum property or the limits for a range property.
4012 * Blob properties are special
4014 * Called by the user via ioctl.
4017 * Zero on success, negative errno on failure.
4019 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
4020 void *data
, struct drm_file
*file_priv
)
4022 struct drm_mode_get_property
*out_resp
= data
;
4023 struct drm_property
*property
;
4025 int value_count
= 0;
4028 struct drm_property_enum
*prop_enum
;
4029 struct drm_mode_property_enum __user
*enum_ptr
;
4030 uint64_t __user
*values_ptr
;
4032 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4035 drm_modeset_lock_all(dev
);
4036 property
= drm_property_find(dev
, out_resp
->prop_id
);
4042 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4043 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4044 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
4048 value_count
= property
->num_values
;
4050 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
4051 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
4052 out_resp
->flags
= property
->flags
;
4054 if ((out_resp
->count_values
>= value_count
) && value_count
) {
4055 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
4056 for (i
= 0; i
< value_count
; i
++) {
4057 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
4063 out_resp
->count_values
= value_count
;
4065 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4066 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4067 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
4069 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
4070 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
4072 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
4077 if (copy_to_user(&enum_ptr
[copied
].name
,
4078 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
4085 out_resp
->count_enum_blobs
= enum_count
;
4089 * NOTE: The idea seems to have been to use this to read all the blob
4090 * property values. But nothing ever added them to the corresponding
4091 * list, userspace always used the special-purpose get_blob ioctl to
4092 * read the value for a blob property. It also doesn't make a lot of
4093 * sense to return values here when everything else is just metadata for
4094 * the property itself.
4096 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4097 out_resp
->count_enum_blobs
= 0;
4099 drm_modeset_unlock_all(dev
);
4104 * drm_property_create_blob - Create new blob property
4106 * Creates a new blob property for a specified DRM device, optionally
4109 * @dev: DRM device to create property for
4110 * @length: Length to allocate for blob data
4111 * @data: If specified, copies data into blob
4114 * New blob property with a single reference on success, or an ERR_PTR
4117 struct drm_property_blob
*
4118 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
4121 struct drm_property_blob
*blob
;
4124 if (!length
|| length
> ULONG_MAX
- sizeof(struct drm_property_blob
))
4125 return ERR_PTR(-EINVAL
);
4127 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
4129 return ERR_PTR(-ENOMEM
);
4131 /* This must be explicitly initialised, so we can safely call list_del
4132 * on it in the removal handler, even if it isn't in a file list. */
4133 INIT_LIST_HEAD(&blob
->head_file
);
4134 blob
->length
= length
;
4138 memcpy(blob
->data
, data
, length
);
4140 mutex_lock(&dev
->mode_config
.blob_lock
);
4142 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
4145 mutex_unlock(&dev
->mode_config
.blob_lock
);
4146 return ERR_PTR(-EINVAL
);
4149 kref_init(&blob
->refcount
);
4151 list_add_tail(&blob
->head_global
,
4152 &dev
->mode_config
.property_blob_list
);
4154 mutex_unlock(&dev
->mode_config
.blob_lock
);
4158 EXPORT_SYMBOL(drm_property_create_blob
);
4161 * drm_property_free_blob - Blob property destructor
4163 * Internal free function for blob properties; must not be used directly.
4167 static void drm_property_free_blob(struct kref
*kref
)
4169 struct drm_property_blob
*blob
=
4170 container_of(kref
, struct drm_property_blob
, refcount
);
4172 WARN_ON(!mutex_is_locked(&blob
->dev
->mode_config
.blob_lock
));
4174 list_del(&blob
->head_global
);
4175 list_del(&blob
->head_file
);
4176 drm_mode_object_put(blob
->dev
, &blob
->base
);
4182 * drm_property_unreference_blob - Unreference a blob property
4184 * Drop a reference on a blob property. May free the object.
4186 * @blob: Pointer to blob property
4188 void drm_property_unreference_blob(struct drm_property_blob
*blob
)
4190 struct drm_device
*dev
;
4197 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4199 if (kref_put_mutex(&blob
->refcount
, drm_property_free_blob
,
4200 &dev
->mode_config
.blob_lock
))
4201 mutex_unlock(&dev
->mode_config
.blob_lock
);
4203 might_lock(&dev
->mode_config
.blob_lock
);
4205 EXPORT_SYMBOL(drm_property_unreference_blob
);
4208 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4210 * Drop a reference on a blob property. May free the object. This must be
4211 * called with blob_lock held.
4213 * @blob: Pointer to blob property
4215 static void drm_property_unreference_blob_locked(struct drm_property_blob
*blob
)
4220 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4222 kref_put(&blob
->refcount
, drm_property_free_blob
);
4226 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4228 * @file_priv: destroy all blobs owned by this file handle
4230 void drm_property_destroy_user_blobs(struct drm_device
*dev
,
4231 struct drm_file
*file_priv
)
4233 struct drm_property_blob
*blob
, *bt
;
4235 mutex_lock(&dev
->mode_config
.blob_lock
);
4237 list_for_each_entry_safe(blob
, bt
, &file_priv
->blobs
, head_file
) {
4238 list_del_init(&blob
->head_file
);
4239 drm_property_unreference_blob_locked(blob
);
4242 mutex_unlock(&dev
->mode_config
.blob_lock
);
4246 * drm_property_reference_blob - Take a reference on an existing property
4248 * Take a new reference on an existing blob property.
4250 * @blob: Pointer to blob property
4252 struct drm_property_blob
*drm_property_reference_blob(struct drm_property_blob
*blob
)
4254 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4255 kref_get(&blob
->refcount
);
4258 EXPORT_SYMBOL(drm_property_reference_blob
);
4261 * Like drm_property_lookup_blob, but does not return an additional reference.
4262 * Must be called with blob_lock held.
4264 static struct drm_property_blob
*__drm_property_lookup_blob(struct drm_device
*dev
,
4267 struct drm_mode_object
*obj
= NULL
;
4268 struct drm_property_blob
*blob
;
4270 WARN_ON(!mutex_is_locked(&dev
->mode_config
.blob_lock
));
4272 mutex_lock(&dev
->mode_config
.idr_mutex
);
4273 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
4274 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_BLOB
) || (obj
->id
!= id
))
4277 blob
= obj_to_blob(obj
);
4278 mutex_unlock(&dev
->mode_config
.idr_mutex
);
4284 * drm_property_lookup_blob - look up a blob property and take a reference
4286 * @id: id of the blob property
4288 * If successful, this takes an additional reference to the blob property.
4289 * callers need to make sure to eventually unreference the returned property
4290 * again, using @drm_property_unreference_blob.
4292 struct drm_property_blob
*drm_property_lookup_blob(struct drm_device
*dev
,
4295 struct drm_property_blob
*blob
;
4297 mutex_lock(&dev
->mode_config
.blob_lock
);
4298 blob
= __drm_property_lookup_blob(dev
, id
);
4300 if (!kref_get_unless_zero(&blob
->refcount
))
4303 mutex_unlock(&dev
->mode_config
.blob_lock
);
4307 EXPORT_SYMBOL(drm_property_lookup_blob
);
4310 * drm_property_replace_global_blob - atomically replace existing blob property
4312 * @replace: location of blob property pointer to be replaced
4313 * @length: length of data for new blob, or 0 for no data
4314 * @data: content for new blob, or NULL for no data
4315 * @obj_holds_id: optional object for property holding blob ID
4316 * @prop_holds_id: optional property holding blob ID
4317 * @return 0 on success or error on failure
4319 * This function will atomically replace a global property in the blob list,
4320 * optionally updating a property which holds the ID of that property. It is
4321 * guaranteed to be atomic: no caller will be allowed to see intermediate
4322 * results, and either the entire operation will succeed and clean up the
4323 * previous property, or it will fail and the state will be unchanged.
4325 * If length is 0 or data is NULL, no new blob will be created, and the holding
4326 * property, if specified, will be set to 0.
4328 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4329 * by holding the relevant modesetting object lock for its parent.
4331 * For example, a drm_connector has a 'PATH' property, which contains the ID
4332 * of a blob property with the value of the MST path information. Calling this
4333 * function with replace pointing to the connector's path_blob_ptr, length and
4334 * data set for the new path information, obj_holds_id set to the connector's
4335 * base object, and prop_holds_id set to the path property name, will perform
4336 * a completely atomic update. The access to path_blob_ptr is protected by the
4337 * caller holding a lock on the connector.
4339 static int drm_property_replace_global_blob(struct drm_device
*dev
,
4340 struct drm_property_blob
**replace
,
4343 struct drm_mode_object
*obj_holds_id
,
4344 struct drm_property
*prop_holds_id
)
4346 struct drm_property_blob
*new_blob
= NULL
;
4347 struct drm_property_blob
*old_blob
= NULL
;
4350 WARN_ON(replace
== NULL
);
4352 old_blob
= *replace
;
4354 if (length
&& data
) {
4355 new_blob
= drm_property_create_blob(dev
, length
, data
);
4356 if (IS_ERR(new_blob
))
4357 return PTR_ERR(new_blob
);
4360 /* This does not need to be synchronised with blob_lock, as the
4361 * get_properties ioctl locks all modesetting objects, and
4362 * obj_holds_id must be locked before calling here, so we cannot
4363 * have its value out of sync with the list membership modified
4364 * below under blob_lock. */
4366 ret
= drm_object_property_set_value(obj_holds_id
,
4369 new_blob
->base
.id
: 0);
4374 drm_property_unreference_blob(old_blob
);
4375 *replace
= new_blob
;
4380 drm_property_unreference_blob(new_blob
);
4385 * drm_mode_getblob_ioctl - get the contents of a blob property value
4388 * @file_priv: DRM file info
4390 * This function retrieves the contents of a blob property. The value stored in
4391 * an object's blob property is just a normal modeset object id.
4393 * Called by the user via ioctl.
4396 * Zero on success, negative errno on failure.
4398 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
4399 void *data
, struct drm_file
*file_priv
)
4401 struct drm_mode_get_blob
*out_resp
= data
;
4402 struct drm_property_blob
*blob
;
4404 void __user
*blob_ptr
;
4406 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4409 drm_modeset_lock_all(dev
);
4410 mutex_lock(&dev
->mode_config
.blob_lock
);
4411 blob
= __drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4417 if (out_resp
->length
== blob
->length
) {
4418 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4419 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)) {
4424 out_resp
->length
= blob
->length
;
4427 mutex_unlock(&dev
->mode_config
.blob_lock
);
4428 drm_modeset_unlock_all(dev
);
4433 * drm_mode_createblob_ioctl - create a new blob property
4436 * @file_priv: DRM file info
4438 * This function creates a new blob property with user-defined values. In order
4439 * to give us sensible validation and checking when creating, rather than at
4440 * every potential use, we also require a type to be provided upfront.
4442 * Called by the user via ioctl.
4445 * Zero on success, negative errno on failure.
4447 int drm_mode_createblob_ioctl(struct drm_device
*dev
,
4448 void *data
, struct drm_file
*file_priv
)
4450 struct drm_mode_create_blob
*out_resp
= data
;
4451 struct drm_property_blob
*blob
;
4452 void __user
*blob_ptr
;
4455 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4458 blob
= drm_property_create_blob(dev
, out_resp
->length
, NULL
);
4460 return PTR_ERR(blob
);
4462 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4463 if (copy_from_user(blob
->data
, blob_ptr
, out_resp
->length
)) {
4468 /* Dropping the lock between create_blob and our access here is safe
4469 * as only the same file_priv can remove the blob; at this point, it is
4470 * not associated with any file_priv. */
4471 mutex_lock(&dev
->mode_config
.blob_lock
);
4472 out_resp
->blob_id
= blob
->base
.id
;
4473 list_add_tail(&blob
->head_file
, &file_priv
->blobs
);
4474 mutex_unlock(&dev
->mode_config
.blob_lock
);
4479 drm_property_unreference_blob(blob
);
4484 * drm_mode_destroyblob_ioctl - destroy a user blob property
4487 * @file_priv: DRM file info
4489 * Destroy an existing user-defined blob property.
4491 * Called by the user via ioctl.
4494 * Zero on success, negative errno on failure.
4496 int drm_mode_destroyblob_ioctl(struct drm_device
*dev
,
4497 void *data
, struct drm_file
*file_priv
)
4499 struct drm_mode_destroy_blob
*out_resp
= data
;
4500 struct drm_property_blob
*blob
= NULL
, *bt
;
4504 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4507 mutex_lock(&dev
->mode_config
.blob_lock
);
4508 blob
= __drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4514 /* Ensure the property was actually created by this user. */
4515 list_for_each_entry(bt
, &file_priv
->blobs
, head_file
) {
4527 /* We must drop head_file here, because we may not be the last
4528 * reference on the blob. */
4529 list_del_init(&blob
->head_file
);
4530 drm_property_unreference_blob_locked(blob
);
4531 mutex_unlock(&dev
->mode_config
.blob_lock
);
4536 mutex_unlock(&dev
->mode_config
.blob_lock
);
4541 * drm_mode_connector_set_path_property - set tile property on connector
4542 * @connector: connector to set property on.
4543 * @path: path to use for property; must not be NULL.
4545 * This creates a property to expose to userspace to specify a
4546 * connector path. This is mainly used for DisplayPort MST where
4547 * connectors have a topology and we want to allow userspace to give
4548 * them more meaningful names.
4551 * Zero on success, negative errno on failure.
4553 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4556 struct drm_device
*dev
= connector
->dev
;
4559 ret
= drm_property_replace_global_blob(dev
,
4560 &connector
->path_blob_ptr
,
4564 dev
->mode_config
.path_property
);
4567 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4570 * drm_mode_connector_set_tile_property - set tile property on connector
4571 * @connector: connector to set property on.
4573 * This looks up the tile information for a connector, and creates a
4574 * property for userspace to parse if it exists. The property is of
4575 * the form of 8 integers using ':' as a separator.
4578 * Zero on success, errno on failure.
4580 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
)
4582 struct drm_device
*dev
= connector
->dev
;
4586 if (!connector
->has_tile
) {
4587 ret
= drm_property_replace_global_blob(dev
,
4588 &connector
->tile_blob_ptr
,
4592 dev
->mode_config
.tile_property
);
4596 ksnprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4597 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
4598 connector
->num_h_tile
, connector
->num_v_tile
,
4599 connector
->tile_h_loc
, connector
->tile_v_loc
,
4600 connector
->tile_h_size
, connector
->tile_v_size
);
4602 ret
= drm_property_replace_global_blob(dev
,
4603 &connector
->tile_blob_ptr
,
4607 dev
->mode_config
.tile_property
);
4610 EXPORT_SYMBOL(drm_mode_connector_set_tile_property
);
4613 * drm_mode_connector_update_edid_property - update the edid property of a connector
4614 * @connector: drm connector
4615 * @edid: new value of the edid property
4617 * This function creates a new blob modeset object and assigns its id to the
4618 * connector's edid property.
4621 * Zero on success, negative errno on failure.
4623 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4624 const struct edid
*edid
)
4626 struct drm_device
*dev
= connector
->dev
;
4630 /* ignore requests to set edid when overridden */
4631 if (connector
->override_edid
)
4635 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4637 ret
= drm_property_replace_global_blob(dev
,
4638 &connector
->edid_blob_ptr
,
4642 dev
->mode_config
.edid_property
);
4645 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4647 /* Some properties could refer to dynamic refcnt'd objects, or things that
4648 * need special locking to handle lifetime issues (ie. to ensure the prop
4649 * value doesn't become invalid part way through the property update due to
4650 * race). The value returned by reference via 'obj' should be passed back
4651 * to drm_property_change_valid_put() after the property is set (and the
4652 * object to which the property is attached has a chance to take it's own
4655 bool drm_property_change_valid_get(struct drm_property
*property
,
4656 uint64_t value
, struct drm_mode_object
**ref
)
4660 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4665 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4666 if (value
< property
->values
[0] || value
> property
->values
[1])
4669 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4670 int64_t svalue
= U642I64(value
);
4672 if (svalue
< U642I64(property
->values
[0]) ||
4673 svalue
> U642I64(property
->values
[1]))
4676 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4677 uint64_t valid_mask
= 0;
4679 for (i
= 0; i
< property
->num_values
; i
++)
4680 valid_mask
|= (1ULL << property
->values
[i
]);
4681 return !(value
& ~valid_mask
);
4682 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4683 struct drm_property_blob
*blob
;
4688 blob
= drm_property_lookup_blob(property
->dev
, value
);
4695 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4696 /* a zero value for an object property translates to null: */
4700 /* handle refcnt'd objects specially: */
4701 if (property
->values
[0] == DRM_MODE_OBJECT_FB
) {
4702 struct drm_framebuffer
*fb
;
4703 fb
= drm_framebuffer_lookup(property
->dev
, value
);
4711 return _object_find(property
->dev
, value
, property
->values
[0]) != NULL
;
4715 for (i
= 0; i
< property
->num_values
; i
++)
4716 if (property
->values
[i
] == value
)
4721 void drm_property_change_valid_put(struct drm_property
*property
,
4722 struct drm_mode_object
*ref
)
4727 if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4728 if (property
->values
[0] == DRM_MODE_OBJECT_FB
)
4729 drm_framebuffer_unreference(obj_to_fb(ref
));
4730 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4731 drm_property_unreference_blob(obj_to_blob(ref
));
4735 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4738 * @file_priv: DRM file info
4740 * This function sets the current value for a connectors's property. It also
4741 * calls into a driver's ->set_property callback to update the hardware state
4743 * Called by the user via ioctl.
4746 * Zero on success, negative errno on failure.
4748 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4749 void *data
, struct drm_file
*file_priv
)
4751 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4752 struct drm_mode_obj_set_property obj_set_prop
= {
4753 .value
= conn_set_prop
->value
,
4754 .prop_id
= conn_set_prop
->prop_id
,
4755 .obj_id
= conn_set_prop
->connector_id
,
4756 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4759 /* It does all the locking and checking we need */
4760 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4763 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4764 struct drm_property
*property
,
4768 struct drm_connector
*connector
= obj_to_connector(obj
);
4770 /* Do DPMS ourselves */
4771 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4773 if (connector
->funcs
->dpms
)
4774 ret
= (*connector
->funcs
->dpms
)(connector
, (int)value
);
4775 } else if (connector
->funcs
->set_property
)
4776 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4778 /* store the property value if successful */
4780 drm_object_property_set_value(&connector
->base
, property
, value
);
4784 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4785 struct drm_property
*property
,
4789 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4791 if (crtc
->funcs
->set_property
)
4792 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4794 drm_object_property_set_value(obj
, property
, value
);
4800 * drm_mode_plane_set_obj_prop - set the value of a property
4801 * @plane: drm plane object to set property value for
4802 * @property: property to set
4803 * @value: value the property should be set to
4805 * This functions sets a given property on a given plane object. This function
4806 * calls the driver's ->set_property callback and changes the software state of
4807 * the property if the callback succeeds.
4810 * Zero on success, error code on failure.
4812 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4813 struct drm_property
*property
,
4817 struct drm_mode_object
*obj
= &plane
->base
;
4819 if (plane
->funcs
->set_property
)
4820 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4822 drm_object_property_set_value(obj
, property
, value
);
4826 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4829 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4832 * @file_priv: DRM file info
4834 * This function retrieves the current value for an object's property. Compared
4835 * to the connector specific ioctl this one is extended to also work on crtc and
4838 * Called by the user via ioctl.
4841 * Zero on success, negative errno on failure.
4843 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4844 struct drm_file
*file_priv
)
4846 struct drm_mode_obj_get_properties
*arg
= data
;
4847 struct drm_mode_object
*obj
;
4850 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4853 drm_modeset_lock_all(dev
);
4855 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4860 if (!obj
->properties
) {
4865 ret
= get_properties(obj
, file_priv
->atomic
,
4866 (uint32_t __user
*)(unsigned long)(arg
->props_ptr
),
4867 (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
),
4871 drm_modeset_unlock_all(dev
);
4876 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4879 * @file_priv: DRM file info
4881 * This function sets the current value for an object's property. It also calls
4882 * into a driver's ->set_property callback to update the hardware state.
4883 * Compared to the connector specific ioctl this one is extended to also work on
4884 * crtc and plane objects.
4886 * Called by the user via ioctl.
4889 * Zero on success, negative errno on failure.
4891 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4892 struct drm_file
*file_priv
)
4894 struct drm_mode_obj_set_property
*arg
= data
;
4895 struct drm_mode_object
*arg_obj
;
4896 struct drm_mode_object
*prop_obj
;
4897 struct drm_property
*property
;
4898 int i
, ret
= -EINVAL
;
4899 struct drm_mode_object
*ref
;
4901 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4904 drm_modeset_lock_all(dev
);
4906 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4911 if (!arg_obj
->properties
)
4914 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4915 if (arg_obj
->properties
->properties
[i
]->base
.id
== arg
->prop_id
)
4918 if (i
== arg_obj
->properties
->count
)
4921 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
4922 DRM_MODE_OBJECT_PROPERTY
);
4927 property
= obj_to_property(prop_obj
);
4929 if (!drm_property_change_valid_get(property
, arg
->value
, &ref
))
4932 switch (arg_obj
->type
) {
4933 case DRM_MODE_OBJECT_CONNECTOR
:
4934 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
4937 case DRM_MODE_OBJECT_CRTC
:
4938 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
4940 case DRM_MODE_OBJECT_PLANE
:
4941 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
4942 property
, arg
->value
);
4946 drm_property_change_valid_put(property
, ref
);
4949 drm_modeset_unlock_all(dev
);
4954 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4955 * @connector: connector to attach
4956 * @encoder: encoder to attach @connector to
4958 * This function links up a connector to an encoder. Note that the routing
4959 * restrictions between encoders and crtcs are exposed to userspace through the
4960 * possible_clones and possible_crtcs bitmasks.
4963 * Zero on success, negative errno on failure.
4965 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
4966 struct drm_encoder
*encoder
)
4970 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
4971 if (connector
->encoder_ids
[i
] == 0) {
4972 connector
->encoder_ids
[i
] = encoder
->base
.id
;
4978 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
4981 * drm_mode_crtc_set_gamma_size - set the gamma table size
4982 * @crtc: CRTC to set the gamma table size for
4983 * @gamma_size: size of the gamma table
4985 * Drivers which support gamma tables should set this to the supported gamma
4986 * table size when initializing the CRTC. Currently the drm core only supports a
4987 * fixed gamma table size.
4990 * Zero on success, negative errno on failure.
4992 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
4995 crtc
->gamma_size
= gamma_size
;
4997 crtc
->gamma_store
= kcalloc(gamma_size
, sizeof(uint16_t) * 3,
4999 if (!crtc
->gamma_store
) {
5000 crtc
->gamma_size
= 0;
5006 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
5009 * drm_mode_gamma_set_ioctl - set the gamma table
5012 * @file_priv: DRM file info
5014 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5015 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5017 * Called by the user via ioctl.
5020 * Zero on success, negative errno on failure.
5022 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
5023 void *data
, struct drm_file
*file_priv
)
5025 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5026 struct drm_crtc
*crtc
;
5027 void *r_base
, *g_base
, *b_base
;
5031 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5034 drm_modeset_lock_all(dev
);
5035 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5041 if (crtc
->funcs
->gamma_set
== NULL
) {
5046 /* memcpy into gamma store */
5047 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5052 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5053 r_base
= crtc
->gamma_store
;
5054 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
5059 g_base
= (char *)r_base
+ size
;
5060 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
5065 b_base
= (char *)g_base
+ size
;
5066 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
5071 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
5074 drm_modeset_unlock_all(dev
);
5080 * drm_mode_gamma_get_ioctl - get the gamma table
5083 * @file_priv: DRM file info
5085 * Copy the current gamma table into the storage provided. This also provides
5086 * the gamma table size the driver expects, which can be used to size the
5087 * allocated storage.
5089 * Called by the user via ioctl.
5092 * Zero on success, negative errno on failure.
5094 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
5095 void *data
, struct drm_file
*file_priv
)
5097 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5098 struct drm_crtc
*crtc
;
5099 void *r_base
, *g_base
, *b_base
;
5103 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5106 drm_modeset_lock_all(dev
);
5107 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5113 /* memcpy into gamma store */
5114 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5119 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5120 r_base
= crtc
->gamma_store
;
5121 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
5126 g_base
= (char *)r_base
+ size
;
5127 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
5132 b_base
= (char *)g_base
+ size
;
5133 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
5138 drm_modeset_unlock_all(dev
);
5142 #ifdef __DragonFly__
5144 * The Linux layer version of kfree() is a macro and can't be called
5145 * directly via a function pointer
5148 drm_crtc_event_destroy(struct drm_pending_event
*e
)
5155 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5158 * @file_priv: DRM file info
5160 * This schedules an asynchronous update on a given CRTC, called page flip.
5161 * Optionally a drm event is generated to signal the completion of the event.
5162 * Generic drivers cannot assume that a pageflip with changed framebuffer
5163 * properties (including driver specific metadata like tiling layout) will work,
5164 * but some drivers support e.g. pixel format changes through the pageflip
5167 * Called by the user via ioctl.
5170 * Zero on success, negative errno on failure.
5172 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
5173 void *data
, struct drm_file
*file_priv
)
5175 struct drm_mode_crtc_page_flip
*page_flip
= data
;
5176 struct drm_crtc
*crtc
;
5177 struct drm_framebuffer
*fb
= NULL
;
5178 struct drm_pending_vblank_event
*e
= NULL
;
5179 unsigned long flags
;
5182 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
5183 page_flip
->reserved
!= 0)
5186 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
5189 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
5193 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
5194 if (crtc
->primary
->fb
== NULL
) {
5195 /* The framebuffer is currently unbound, presumably
5196 * due to a hotplug event, that userspace has not
5203 if (crtc
->funcs
->page_flip
== NULL
)
5206 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
5213 const struct drm_plane_state
*state
= crtc
->primary
->state
;
5215 ret
= check_src_coords(state
->src_x
, state
->src_y
,
5216 state
->src_w
, state
->src_h
, fb
);
5218 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
5223 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
5224 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5229 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5231 spin_lock_irqsave(&dev
->event_lock
, flags
);
5232 if (file_priv
->event_space
< sizeof(e
->event
)) {
5233 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5236 file_priv
->event_space
-= sizeof(e
->event
);
5237 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5239 e
= kzalloc(sizeof(*e
), GFP_KERNEL
);
5241 spin_lock_irqsave(&dev
->event_lock
, flags
);
5242 file_priv
->event_space
+= sizeof(e
->event
);
5243 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5247 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
5248 e
->event
.base
.length
= sizeof(e
->event
);
5249 e
->event
.user_data
= page_flip
->user_data
;
5250 e
->base
.event
= &e
->event
.base
;
5251 e
->base
.file_priv
= file_priv
;
5252 #ifdef __DragonFly__
5253 e
->base
.destroy
= drm_crtc_event_destroy
;
5256 (void (*) (struct drm_pending_event
*)) kfree
;
5260 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
5261 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
5263 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5264 spin_lock_irqsave(&dev
->event_lock
, flags
);
5265 file_priv
->event_space
+= sizeof(e
->event
);
5266 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5269 /* Keep the old fb, don't unref it. */
5270 crtc
->primary
->old_fb
= NULL
;
5272 crtc
->primary
->fb
= fb
;
5273 /* Unref only the old framebuffer. */
5279 drm_framebuffer_unreference(fb
);
5280 if (crtc
->primary
->old_fb
)
5281 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
5282 crtc
->primary
->old_fb
= NULL
;
5283 drm_modeset_unlock_crtc(crtc
);
5289 * drm_mode_config_reset - call ->reset callbacks
5292 * This functions calls all the crtc's, encoder's and connector's ->reset
5293 * callback. Drivers can use this in e.g. their driver load or resume code to
5294 * reset hardware and software state.
5296 void drm_mode_config_reset(struct drm_device
*dev
)
5298 struct drm_crtc
*crtc
;
5299 struct drm_plane
*plane
;
5300 struct drm_encoder
*encoder
;
5301 struct drm_connector
*connector
;
5303 drm_for_each_plane(plane
, dev
)
5304 if (plane
->funcs
->reset
)
5305 plane
->funcs
->reset(plane
);
5307 drm_for_each_crtc(crtc
, dev
)
5308 if (crtc
->funcs
->reset
)
5309 crtc
->funcs
->reset(crtc
);
5311 drm_for_each_encoder(encoder
, dev
)
5312 if (encoder
->funcs
->reset
)
5313 encoder
->funcs
->reset(encoder
);
5315 mutex_lock(&dev
->mode_config
.mutex
);
5316 drm_for_each_connector(connector
, dev
) {
5317 connector
->status
= connector_status_unknown
;
5319 if (connector
->funcs
->reset
)
5320 connector
->funcs
->reset(connector
);
5322 mutex_unlock(&dev
->mode_config
.mutex
);
5324 EXPORT_SYMBOL(drm_mode_config_reset
);
5327 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5330 * @file_priv: DRM file info
5332 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5333 * TTM or something else entirely) and returns the resulting buffer handle. This
5334 * handle can then be wrapped up into a framebuffer modeset object.
5336 * Note that userspace is not allowed to use such objects for render
5337 * acceleration - drivers must create their own private ioctls for such a use
5340 * Called by the user via ioctl.
5343 * Zero on success, negative errno on failure.
5345 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
5346 void *data
, struct drm_file
*file_priv
)
5348 struct drm_mode_create_dumb
*args
= data
;
5349 u32 cpp
, stride
, size
;
5351 if (!dev
->driver
->dumb_create
)
5353 if (!args
->width
|| !args
->height
|| !args
->bpp
)
5356 /* overflow checks for 32bit size calculations */
5357 /* NOTE: DIV_ROUND_UP() can overflow */
5358 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
5359 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
5361 stride
= cpp
* args
->width
;
5362 if (args
->height
> 0xffffffffU
/ stride
)
5365 /* test for wrap-around */
5366 size
= args
->height
* stride
;
5367 if (PAGE_ALIGN(size
) == 0)
5371 * handle, pitch and size are output parameters. Zero them out to
5372 * prevent drivers from accidentally using uninitialized data. Since
5373 * not all existing userspace is clearing these fields properly we
5374 * cannot reject IOCTL with garbage in them.
5380 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
5384 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5387 * @file_priv: DRM file info
5389 * Allocate an offset in the drm device node's address space to be able to
5390 * memory map a dumb buffer.
5392 * Called by the user via ioctl.
5395 * Zero on success, negative errno on failure.
5397 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
5398 void *data
, struct drm_file
*file_priv
)
5400 struct drm_mode_map_dumb
*args
= data
;
5402 /* call driver ioctl to get mmap offset */
5403 if (!dev
->driver
->dumb_map_offset
)
5406 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
5410 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5413 * @file_priv: DRM file info
5415 * This destroys the userspace handle for the given dumb backing storage buffer.
5416 * Since buffer objects must be reference counted in the kernel a buffer object
5417 * won't be immediately freed if a framebuffer modeset object still uses it.
5419 * Called by the user via ioctl.
5422 * Zero on success, negative errno on failure.
5424 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
5425 void *data
, struct drm_file
*file_priv
)
5427 struct drm_mode_destroy_dumb
*args
= data
;
5429 if (!dev
->driver
->dumb_destroy
)
5432 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
5436 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5437 * @format: pixel format (DRM_FORMAT_*)
5438 * @depth: storage for the depth value
5439 * @bpp: storage for the bpp value
5441 * This only supports RGB formats here for compat with code that doesn't use
5442 * pixel formats directly yet.
5444 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
5449 case DRM_FORMAT_RGB332
:
5450 case DRM_FORMAT_BGR233
:
5454 case DRM_FORMAT_XRGB1555
:
5455 case DRM_FORMAT_XBGR1555
:
5456 case DRM_FORMAT_RGBX5551
:
5457 case DRM_FORMAT_BGRX5551
:
5458 case DRM_FORMAT_ARGB1555
:
5459 case DRM_FORMAT_ABGR1555
:
5460 case DRM_FORMAT_RGBA5551
:
5461 case DRM_FORMAT_BGRA5551
:
5465 case DRM_FORMAT_RGB565
:
5466 case DRM_FORMAT_BGR565
:
5470 case DRM_FORMAT_RGB888
:
5471 case DRM_FORMAT_BGR888
:
5475 case DRM_FORMAT_XRGB8888
:
5476 case DRM_FORMAT_XBGR8888
:
5477 case DRM_FORMAT_RGBX8888
:
5478 case DRM_FORMAT_BGRX8888
:
5482 case DRM_FORMAT_XRGB2101010
:
5483 case DRM_FORMAT_XBGR2101010
:
5484 case DRM_FORMAT_RGBX1010102
:
5485 case DRM_FORMAT_BGRX1010102
:
5486 case DRM_FORMAT_ARGB2101010
:
5487 case DRM_FORMAT_ABGR2101010
:
5488 case DRM_FORMAT_RGBA1010102
:
5489 case DRM_FORMAT_BGRA1010102
:
5493 case DRM_FORMAT_ARGB8888
:
5494 case DRM_FORMAT_ABGR8888
:
5495 case DRM_FORMAT_RGBA8888
:
5496 case DRM_FORMAT_BGRA8888
:
5501 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5502 drm_get_format_name(format
));
5508 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
5511 * drm_format_num_planes - get the number of planes for format
5512 * @format: pixel format (DRM_FORMAT_*)
5515 * The number of planes used by the specified pixel format.
5517 int drm_format_num_planes(uint32_t format
)
5520 case DRM_FORMAT_YUV410
:
5521 case DRM_FORMAT_YVU410
:
5522 case DRM_FORMAT_YUV411
:
5523 case DRM_FORMAT_YVU411
:
5524 case DRM_FORMAT_YUV420
:
5525 case DRM_FORMAT_YVU420
:
5526 case DRM_FORMAT_YUV422
:
5527 case DRM_FORMAT_YVU422
:
5528 case DRM_FORMAT_YUV444
:
5529 case DRM_FORMAT_YVU444
:
5531 case DRM_FORMAT_NV12
:
5532 case DRM_FORMAT_NV21
:
5533 case DRM_FORMAT_NV16
:
5534 case DRM_FORMAT_NV61
:
5535 case DRM_FORMAT_NV24
:
5536 case DRM_FORMAT_NV42
:
5542 EXPORT_SYMBOL(drm_format_num_planes
);
5545 * drm_format_plane_cpp - determine the bytes per pixel value
5546 * @format: pixel format (DRM_FORMAT_*)
5547 * @plane: plane index
5550 * The bytes per pixel value for the specified plane.
5552 int drm_format_plane_cpp(uint32_t format
, int plane
)
5557 if (plane
>= drm_format_num_planes(format
))
5561 case DRM_FORMAT_YUYV
:
5562 case DRM_FORMAT_YVYU
:
5563 case DRM_FORMAT_UYVY
:
5564 case DRM_FORMAT_VYUY
:
5566 case DRM_FORMAT_NV12
:
5567 case DRM_FORMAT_NV21
:
5568 case DRM_FORMAT_NV16
:
5569 case DRM_FORMAT_NV61
:
5570 case DRM_FORMAT_NV24
:
5571 case DRM_FORMAT_NV42
:
5572 return plane
? 2 : 1;
5573 case DRM_FORMAT_YUV410
:
5574 case DRM_FORMAT_YVU410
:
5575 case DRM_FORMAT_YUV411
:
5576 case DRM_FORMAT_YVU411
:
5577 case DRM_FORMAT_YUV420
:
5578 case DRM_FORMAT_YVU420
:
5579 case DRM_FORMAT_YUV422
:
5580 case DRM_FORMAT_YVU422
:
5581 case DRM_FORMAT_YUV444
:
5582 case DRM_FORMAT_YVU444
:
5585 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
5589 EXPORT_SYMBOL(drm_format_plane_cpp
);
5592 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5593 * @format: pixel format (DRM_FORMAT_*)
5596 * The horizontal chroma subsampling factor for the
5597 * specified pixel format.
5599 int drm_format_horz_chroma_subsampling(uint32_t format
)
5602 case DRM_FORMAT_YUV411
:
5603 case DRM_FORMAT_YVU411
:
5604 case DRM_FORMAT_YUV410
:
5605 case DRM_FORMAT_YVU410
:
5607 case DRM_FORMAT_YUYV
:
5608 case DRM_FORMAT_YVYU
:
5609 case DRM_FORMAT_UYVY
:
5610 case DRM_FORMAT_VYUY
:
5611 case DRM_FORMAT_NV12
:
5612 case DRM_FORMAT_NV21
:
5613 case DRM_FORMAT_NV16
:
5614 case DRM_FORMAT_NV61
:
5615 case DRM_FORMAT_YUV422
:
5616 case DRM_FORMAT_YVU422
:
5617 case DRM_FORMAT_YUV420
:
5618 case DRM_FORMAT_YVU420
:
5624 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5627 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5628 * @format: pixel format (DRM_FORMAT_*)
5631 * The vertical chroma subsampling factor for the
5632 * specified pixel format.
5634 int drm_format_vert_chroma_subsampling(uint32_t format
)
5637 case DRM_FORMAT_YUV410
:
5638 case DRM_FORMAT_YVU410
:
5640 case DRM_FORMAT_YUV420
:
5641 case DRM_FORMAT_YVU420
:
5642 case DRM_FORMAT_NV12
:
5643 case DRM_FORMAT_NV21
:
5649 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5652 * drm_rotation_simplify() - Try to simplify the rotation
5653 * @rotation: Rotation to be simplified
5654 * @supported_rotations: Supported rotations
5656 * Attempt to simplify the rotation to a form that is supported.
5657 * Eg. if the hardware supports everything except DRM_REFLECT_X
5658 * one could call this function like this:
5660 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5661 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5662 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5664 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5665 * transforms the hardware supports, this function may not
5666 * be able to produce a supported transform, so the caller should
5667 * check the result afterwards.
5669 unsigned int drm_rotation_simplify(unsigned int rotation
,
5670 unsigned int supported_rotations
)
5672 if (rotation
& ~supported_rotations
) {
5673 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5674 rotation
= (rotation
& DRM_REFLECT_MASK
) |
5675 BIT((ffs(rotation
& DRM_ROTATE_MASK
) + 1) % 4);
5680 EXPORT_SYMBOL(drm_rotation_simplify
);
5683 * drm_mode_config_init - initialize DRM mode_configuration structure
5686 * Initialize @dev's mode_config structure, used for tracking the graphics
5687 * configuration of @dev.
5689 * Since this initializes the modeset locks, no locking is possible. Which is no
5690 * problem, since this should happen single threaded at init time. It is the
5691 * driver's problem to ensure this guarantee.
5694 void drm_mode_config_init(struct drm_device
*dev
)
5696 lockinit(&dev
->mode_config
.mutex
, "drmmcm", 0, LK_CANRECURSE
);
5697 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5698 lockinit(&dev
->mode_config
.idr_mutex
, "mcfgidr", 0, LK_CANRECURSE
);
5699 lockinit(&dev
->mode_config
.fb_lock
, "drmfbl", 0, LK_CANRECURSE
);
5700 lockinit(&dev
->mode_config
.blob_lock
, "drmcbl", 0, LK_CANRECURSE
);
5701 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5702 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5703 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5704 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5705 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5706 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5707 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5708 idr_init(&dev
->mode_config
.crtc_idr
);
5709 idr_init(&dev
->mode_config
.tile_idr
);
5711 drm_modeset_lock_all(dev
);
5712 drm_mode_create_standard_properties(dev
);
5713 drm_modeset_unlock_all(dev
);
5715 /* Just to be sure */
5716 dev
->mode_config
.num_fb
= 0;
5717 dev
->mode_config
.num_connector
= 0;
5718 dev
->mode_config
.num_crtc
= 0;
5719 dev
->mode_config
.num_encoder
= 0;
5720 dev
->mode_config
.num_overlay_plane
= 0;
5721 dev
->mode_config
.num_total_plane
= 0;
5723 EXPORT_SYMBOL(drm_mode_config_init
);
5726 * drm_mode_config_cleanup - free up DRM mode_config info
5729 * Free up all the connectors and CRTCs associated with this DRM device, then
5730 * free up the framebuffers and associated buffer objects.
5732 * Note that since this /should/ happen single-threaded at driver/device
5733 * teardown time, no locking is required. It's the driver's job to ensure that
5734 * this guarantee actually holds true.
5736 * FIXME: cleanup any dangling user buffer objects too
5738 void drm_mode_config_cleanup(struct drm_device
*dev
)
5740 struct drm_connector
*connector
, *ot
;
5741 struct drm_crtc
*crtc
, *ct
;
5742 struct drm_encoder
*encoder
, *enct
;
5743 struct drm_framebuffer
*fb
, *fbt
;
5744 struct drm_property
*property
, *pt
;
5745 struct drm_property_blob
*blob
, *bt
;
5746 struct drm_plane
*plane
, *plt
;
5748 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5750 encoder
->funcs
->destroy(encoder
);
5753 list_for_each_entry_safe(connector
, ot
,
5754 &dev
->mode_config
.connector_list
, head
) {
5755 connector
->funcs
->destroy(connector
);
5758 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5760 drm_property_destroy(dev
, property
);
5763 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5765 drm_property_unreference_blob(blob
);
5769 * Single-threaded teardown context, so it's not required to grab the
5770 * fb_lock to protect against concurrent fb_list access. Contrary, it
5771 * would actually deadlock with the drm_framebuffer_cleanup function.
5773 * Also, if there are any framebuffers left, that's a driver leak now,
5774 * so politely WARN about this.
5776 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5777 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5778 drm_framebuffer_free(&fb
->refcount
);
5781 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5783 plane
->funcs
->destroy(plane
);
5786 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5787 crtc
->funcs
->destroy(crtc
);
5790 idr_destroy(&dev
->mode_config
.tile_idr
);
5791 idr_destroy(&dev
->mode_config
.crtc_idr
);
5792 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5794 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5796 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5797 unsigned int supported_rotations
)
5799 static const struct drm_prop_enum_list props
[] = {
5800 { DRM_ROTATE_0
, "rotate-0" },
5801 { DRM_ROTATE_90
, "rotate-90" },
5802 { DRM_ROTATE_180
, "rotate-180" },
5803 { DRM_ROTATE_270
, "rotate-270" },
5804 { DRM_REFLECT_X
, "reflect-x" },
5805 { DRM_REFLECT_Y
, "reflect-y" },
5808 return drm_property_create_bitmask(dev
, 0, "rotation",
5809 props
, ARRAY_SIZE(props
),
5810 supported_rotations
);
5812 EXPORT_SYMBOL(drm_mode_create_rotation_property
);
5817 * Tile groups are used to represent tiled monitors with a unique
5818 * integer identifier. Tiled monitors using DisplayID v1.3 have
5819 * a unique 8-byte handle, we store this in a tile group, so we
5820 * have a common identifier for all tiles in a monitor group.
5822 static void drm_tile_group_free(struct kref
*kref
)
5824 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
5825 struct drm_device
*dev
= tg
->dev
;
5826 mutex_lock(&dev
->mode_config
.idr_mutex
);
5827 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
5828 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5833 * drm_mode_put_tile_group - drop a reference to a tile group.
5835 * @tg: tile group to drop reference to.
5837 * drop reference to tile group and free if 0.
5839 void drm_mode_put_tile_group(struct drm_device
*dev
,
5840 struct drm_tile_group
*tg
)
5842 kref_put(&tg
->refcount
, drm_tile_group_free
);
5846 * drm_mode_get_tile_group - get a reference to an existing tile group
5848 * @topology: 8-bytes unique per monitor.
5850 * Use the unique bytes to get a reference to an existing tile group.
5853 * tile group or NULL if not found.
5855 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
5859 struct drm_tile_group
*tg
;
5861 mutex_lock(&dev
->mode_config
.idr_mutex
);
5862 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
5863 if (!memcmp(tg
->group_data
, topology
, 8)) {
5864 if (!kref_get_unless_zero(&tg
->refcount
))
5866 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5870 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5874 EXPORT_SYMBOL(drm_mode_get_tile_group
);
5877 * drm_mode_create_tile_group - create a tile group from a displayid description
5879 * @topology: 8-bytes unique per monitor.
5881 * Create a tile group for the unique monitor, and get a unique
5882 * identifier for the tile group.
5885 * new tile group or error.
5887 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
5890 struct drm_tile_group
*tg
;
5893 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
5895 return ERR_PTR(-ENOMEM
);
5897 kref_init(&tg
->refcount
);
5898 memcpy(tg
->group_data
, topology
, 8);
5901 mutex_lock(&dev
->mode_config
.idr_mutex
);
5902 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
5910 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5913 EXPORT_SYMBOL(drm_mode_create_tile_group
);