2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_fourcc.h>
40 #include <drm/drm_modeset_lock.h>
41 #include <drm/drm_atomic.h>
43 #include "drm_crtc_internal.h"
44 #include "drm_internal.h"
46 static struct drm_framebuffer
*
47 internal_framebuffer_create(struct drm_device
*dev
,
48 struct drm_mode_fb_cmd2
*r
,
49 struct drm_file
*file_priv
);
51 /* Avoid boilerplate. I'm tired of typing. */
52 #define DRM_ENUM_NAME_FN(fnname, list) \
53 const char *fnname(int val) \
56 for (i = 0; i < ARRAY_SIZE(list); i++) { \
57 if (list[i].type == val) \
58 return list[i].name; \
66 static const struct drm_prop_enum_list drm_dpms_enum_list
[] = {
67 { DRM_MODE_DPMS_ON
, "On" },
68 { DRM_MODE_DPMS_STANDBY
, "Standby" },
69 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
70 { DRM_MODE_DPMS_OFF
, "Off" }
73 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
75 static const struct drm_prop_enum_list drm_plane_type_enum_list
[] = {
76 { DRM_PLANE_TYPE_OVERLAY
, "Overlay" },
77 { DRM_PLANE_TYPE_PRIMARY
, "Primary" },
78 { DRM_PLANE_TYPE_CURSOR
, "Cursor" },
84 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] = {
85 { DRM_MODE_SCALE_NONE
, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
87 { DRM_MODE_SCALE_CENTER
, "Center" },
88 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list
[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE
, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3
, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9
, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list
[] = {
101 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
102 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
103 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
106 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
108 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] = {
109 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
110 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
111 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
114 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
115 drm_dvi_i_subconnector_enum_list
)
117 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] = {
118 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
122 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
125 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
127 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] = {
128 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
129 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
132 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
135 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
136 drm_tv_subconnector_enum_list
)
138 static const struct drm_prop_enum_list drm_dirty_info_enum_list
[] = {
139 { DRM_MODE_DIRTY_OFF
, "Off" },
140 { DRM_MODE_DIRTY_ON
, "On" },
141 { DRM_MODE_DIRTY_ANNOTATE
, "Annotate" },
144 struct drm_conn_prop_enum_list
{
151 * Connector and encoder types.
153 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] = {
154 { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
155 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
156 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
157 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
158 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
159 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
160 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
161 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
162 { DRM_MODE_CONNECTOR_Component
, "Component" },
163 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
164 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
165 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
166 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
167 { DRM_MODE_CONNECTOR_TV
, "TV" },
168 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
169 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
170 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
173 static const struct drm_prop_enum_list drm_encoder_enum_list
[] = {
174 { DRM_MODE_ENCODER_NONE
, "None" },
175 { DRM_MODE_ENCODER_DAC
, "DAC" },
176 { DRM_MODE_ENCODER_TMDS
, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS
, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC
, "TV" },
179 { DRM_MODE_ENCODER_VIRTUAL
, "Virtual" },
180 { DRM_MODE_ENCODER_DSI
, "DSI" },
181 { DRM_MODE_ENCODER_DPMST
, "DP MST" },
184 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] = {
185 { SubPixelUnknown
, "Unknown" },
186 { SubPixelHorizontalRGB
, "Horizontal RGB" },
187 { SubPixelHorizontalBGR
, "Horizontal BGR" },
188 { SubPixelVerticalRGB
, "Vertical RGB" },
189 { SubPixelVerticalBGR
, "Vertical BGR" },
190 { SubPixelNone
, "None" },
193 void drm_connector_ida_init(void)
197 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
198 ida_init(&drm_connector_enum_list
[i
].ida
);
201 void drm_connector_ida_destroy(void)
205 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
206 ida_destroy(&drm_connector_enum_list
[i
].ida
);
210 * drm_get_connector_status_name - return a string for connector status
211 * @status: connector status to compute name of
213 * In contrast to the other drm_get_*_name functions this one here returns a
214 * const pointer and hence is threadsafe.
216 const char *drm_get_connector_status_name(enum drm_connector_status status
)
218 if (status
== connector_status_connected
)
220 else if (status
== connector_status_disconnected
)
221 return "disconnected";
225 EXPORT_SYMBOL(drm_get_connector_status_name
);
228 * drm_get_subpixel_order_name - return a string for a given subpixel enum
229 * @order: enum of subpixel_order
231 * Note you could abuse this and return something out of bounds, but that
232 * would be a caller error. No unscrubbed user data should make it here.
234 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
236 return drm_subpixel_enum_list
[order
].name
;
238 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
240 static char printable_char(int c
)
242 return isascii(c
) && isprint(c
) ? c
: '?';
246 * drm_get_format_name - return a string for drm fourcc format
247 * @format: format to compute name of
249 * Note that the buffer used by this function is globally shared and owned by
250 * the function itself.
252 * FIXME: This isn't really multithreading safe.
254 const char *drm_get_format_name(uint32_t format
)
258 snprintf(buf
, sizeof(buf
),
259 "%c%c%c%c %s-endian (0x%08x)",
260 printable_char(format
& 0xff),
261 printable_char((format
>> 8) & 0xff),
262 printable_char((format
>> 16) & 0xff),
263 printable_char((format
>> 24) & 0x7f),
264 format
& DRM_FORMAT_BIG_ENDIAN
? "big" : "little",
269 EXPORT_SYMBOL(drm_get_format_name
);
272 * Internal function to assign a slot in the object idr and optionally
273 * register the object into the idr.
275 static int drm_mode_object_get_reg(struct drm_device
*dev
,
276 struct drm_mode_object
*obj
,
282 mutex_lock(&dev
->mode_config
.idr_mutex
);
283 ret
= idr_alloc(&dev
->mode_config
.crtc_idr
, register_obj
? obj
: NULL
, 1, 0, GFP_KERNEL
);
286 * Set up the object linking under the protection of the idr
287 * lock so that other users can't see inconsistent state.
290 obj
->type
= obj_type
;
292 mutex_unlock(&dev
->mode_config
.idr_mutex
);
294 return ret
< 0 ? ret
: 0;
298 * drm_mode_object_get - allocate a new modeset identifier
300 * @obj: object pointer, used to generate unique ID
301 * @obj_type: object type
303 * Create a unique identifier based on @ptr in @dev's identifier space. Used
304 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
305 * modeset identifiers are _not_ reference counted. Hence don't use this for
306 * reference counted modeset objects like framebuffers.
309 * New unique (relative to other objects in @dev) integer identifier for the
312 int drm_mode_object_get(struct drm_device
*dev
,
313 struct drm_mode_object
*obj
, uint32_t obj_type
)
315 return drm_mode_object_get_reg(dev
, obj
, obj_type
, true);
318 static void drm_mode_object_register(struct drm_device
*dev
,
319 struct drm_mode_object
*obj
)
321 mutex_lock(&dev
->mode_config
.idr_mutex
);
322 idr_replace(&dev
->mode_config
.crtc_idr
, obj
, obj
->id
);
323 mutex_unlock(&dev
->mode_config
.idr_mutex
);
327 * drm_mode_object_put - free a modeset identifer
329 * @object: object to free
331 * Free @id from @dev's unique identifier pool. Note that despite the _get
332 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
333 * for reference counted modeset objects like framebuffers.
335 void drm_mode_object_put(struct drm_device
*dev
,
336 struct drm_mode_object
*object
)
338 mutex_lock(&dev
->mode_config
.idr_mutex
);
339 idr_remove(&dev
->mode_config
.crtc_idr
, object
->id
);
340 mutex_unlock(&dev
->mode_config
.idr_mutex
);
343 static struct drm_mode_object
*_object_find(struct drm_device
*dev
,
344 uint32_t id
, uint32_t type
)
346 struct drm_mode_object
*obj
= NULL
;
348 mutex_lock(&dev
->mode_config
.idr_mutex
);
349 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
350 if (obj
&& type
!= DRM_MODE_OBJECT_ANY
&& obj
->type
!= type
)
352 if (obj
&& obj
->id
!= id
)
354 /* don't leak out unref'd fb's */
356 (obj
->type
== DRM_MODE_OBJECT_FB
||
357 obj
->type
== DRM_MODE_OBJECT_BLOB
))
359 mutex_unlock(&dev
->mode_config
.idr_mutex
);
365 * drm_mode_object_find - look up a drm object with static lifetime
367 * @id: id of the mode object
368 * @type: type of the mode object
370 * Note that framebuffers cannot be looked up with this functions - since those
371 * are reference counted, they need special treatment. Even with
372 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
373 * rather than WARN_ON()).
375 struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
376 uint32_t id
, uint32_t type
)
378 struct drm_mode_object
*obj
= NULL
;
380 /* Framebuffers are reference counted and need their own lookup
382 WARN_ON(type
== DRM_MODE_OBJECT_FB
|| type
== DRM_MODE_OBJECT_BLOB
);
383 obj
= _object_find(dev
, id
, type
);
386 EXPORT_SYMBOL(drm_mode_object_find
);
389 * drm_framebuffer_init - initialize a framebuffer
391 * @fb: framebuffer to be initialized
392 * @funcs: ... with these functions
394 * Allocates an ID for the framebuffer's parent mode object, sets its mode
395 * functions & device file and adds it to the master fd list.
398 * This functions publishes the fb and makes it available for concurrent access
399 * by other users. Which means by this point the fb _must_ be fully set up -
400 * since all the fb attributes are invariant over its lifetime, no further
401 * locking but only correct reference counting is required.
404 * Zero on success, error code on failure.
406 int drm_framebuffer_init(struct drm_device
*dev
, struct drm_framebuffer
*fb
,
407 const struct drm_framebuffer_funcs
*funcs
)
411 mutex_lock(&dev
->mode_config
.fb_lock
);
412 kref_init(&fb
->refcount
);
413 INIT_LIST_HEAD(&fb
->filp_head
);
417 ret
= drm_mode_object_get(dev
, &fb
->base
, DRM_MODE_OBJECT_FB
);
421 dev
->mode_config
.num_fb
++;
422 list_add(&fb
->head
, &dev
->mode_config
.fb_list
);
424 mutex_unlock(&dev
->mode_config
.fb_lock
);
428 EXPORT_SYMBOL(drm_framebuffer_init
);
430 /* dev->mode_config.fb_lock must be held! */
431 static void __drm_framebuffer_unregister(struct drm_device
*dev
,
432 struct drm_framebuffer
*fb
)
434 mutex_lock(&dev
->mode_config
.idr_mutex
);
435 idr_remove(&dev
->mode_config
.crtc_idr
, fb
->base
.id
);
436 mutex_unlock(&dev
->mode_config
.idr_mutex
);
441 static void drm_framebuffer_free(struct kref
*kref
)
443 struct drm_framebuffer
*fb
=
444 container_of(kref
, struct drm_framebuffer
, refcount
);
445 struct drm_device
*dev
= fb
->dev
;
448 * The lookup idr holds a weak reference, which has not necessarily been
449 * removed at this point. Check for that.
451 mutex_lock(&dev
->mode_config
.fb_lock
);
453 /* Mark fb as reaped and drop idr ref. */
454 __drm_framebuffer_unregister(dev
, fb
);
456 mutex_unlock(&dev
->mode_config
.fb_lock
);
458 fb
->funcs
->destroy(fb
);
461 static struct drm_framebuffer
*__drm_framebuffer_lookup(struct drm_device
*dev
,
464 struct drm_mode_object
*obj
= NULL
;
465 struct drm_framebuffer
*fb
;
467 mutex_lock(&dev
->mode_config
.idr_mutex
);
468 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
469 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_FB
) || (obj
->id
!= id
))
473 mutex_unlock(&dev
->mode_config
.idr_mutex
);
479 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
481 * @id: id of the fb object
483 * If successful, this grabs an additional reference to the framebuffer -
484 * callers need to make sure to eventually unreference the returned framebuffer
485 * again, using @drm_framebuffer_unreference.
487 struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
490 struct drm_framebuffer
*fb
;
492 mutex_lock(&dev
->mode_config
.fb_lock
);
493 fb
= __drm_framebuffer_lookup(dev
, id
);
495 if (!kref_get_unless_zero(&fb
->refcount
))
498 mutex_unlock(&dev
->mode_config
.fb_lock
);
502 EXPORT_SYMBOL(drm_framebuffer_lookup
);
505 * drm_framebuffer_unreference - unref a framebuffer
506 * @fb: framebuffer to unref
508 * This functions decrements the fb's refcount and frees it if it drops to zero.
510 void drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
512 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
513 kref_put(&fb
->refcount
, drm_framebuffer_free
);
515 EXPORT_SYMBOL(drm_framebuffer_unreference
);
518 * drm_framebuffer_reference - incr the fb refcnt
521 * This functions increments the fb's refcount.
523 void drm_framebuffer_reference(struct drm_framebuffer
*fb
)
525 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
526 kref_get(&fb
->refcount
);
528 EXPORT_SYMBOL(drm_framebuffer_reference
);
531 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
532 * @fb: fb to unregister
534 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
535 * those used for fbdev. Note that the caller must hold a reference of it's own,
536 * i.e. the object may not be destroyed through this call (since it'll lead to a
537 * locking inversion).
539 void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
)
541 struct drm_device
*dev
= fb
->dev
;
543 mutex_lock(&dev
->mode_config
.fb_lock
);
544 /* Mark fb as reaped and drop idr ref. */
545 __drm_framebuffer_unregister(dev
, fb
);
546 mutex_unlock(&dev
->mode_config
.fb_lock
);
548 EXPORT_SYMBOL(drm_framebuffer_unregister_private
);
551 * drm_framebuffer_cleanup - remove a framebuffer object
552 * @fb: framebuffer to remove
554 * Cleanup framebuffer. This function is intended to be used from the drivers
555 * ->destroy callback. It can also be used to clean up driver private
556 * framebuffers embedded into a larger structure.
558 * Note that this function does not remove the fb from active usuage - if it is
559 * still used anywhere, hilarity can ensue since userspace could call getfb on
560 * the id and get back -EINVAL. Obviously no concern at driver unload time.
562 * Also, the framebuffer will not be removed from the lookup idr - for
563 * user-created framebuffers this will happen in in the rmfb ioctl. For
564 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
565 * drm_framebuffer_unregister_private.
567 void drm_framebuffer_cleanup(struct drm_framebuffer
*fb
)
569 struct drm_device
*dev
= fb
->dev
;
571 mutex_lock(&dev
->mode_config
.fb_lock
);
573 dev
->mode_config
.num_fb
--;
574 mutex_unlock(&dev
->mode_config
.fb_lock
);
576 EXPORT_SYMBOL(drm_framebuffer_cleanup
);
579 * drm_framebuffer_remove - remove and unreference a framebuffer object
580 * @fb: framebuffer to remove
582 * Scans all the CRTCs and planes in @dev's mode_config. If they're
583 * using @fb, removes it, setting it to NULL. Then drops the reference to the
584 * passed-in framebuffer. Might take the modeset locks.
586 * Note that this function optimizes the cleanup away if the caller holds the
587 * last reference to the framebuffer. It is also guaranteed to not take the
588 * modeset locks in this case.
590 void drm_framebuffer_remove(struct drm_framebuffer
*fb
)
592 struct drm_device
*dev
= fb
->dev
;
593 struct drm_crtc
*crtc
;
594 struct drm_plane
*plane
;
595 struct drm_mode_set set
;
598 WARN_ON(!list_empty(&fb
->filp_head
));
601 * drm ABI mandates that we remove any deleted framebuffers from active
602 * useage. But since most sane clients only remove framebuffers they no
603 * longer need, try to optimize this away.
605 * Since we're holding a reference ourselves, observing a refcount of 1
606 * means that we're the last holder and can skip it. Also, the refcount
607 * can never increase from 1 again, so we don't need any barriers or
610 * Note that userspace could try to race with use and instate a new
611 * usage _after_ we've cleared all current ones. End result will be an
612 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
615 if (atomic_read(&fb
->refcount
.refcount
) > 1) {
616 drm_modeset_lock_all(dev
);
617 /* remove from any CRTC */
618 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
619 if (crtc
->primary
->fb
== fb
) {
620 /* should turn off the crtc */
621 memset(&set
, 0, sizeof(struct drm_mode_set
));
624 ret
= drm_mode_set_config_internal(&set
);
626 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc
);
630 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
) {
632 drm_plane_force_disable(plane
);
634 drm_modeset_unlock_all(dev
);
637 drm_framebuffer_unreference(fb
);
639 EXPORT_SYMBOL(drm_framebuffer_remove
);
641 DEFINE_WW_CLASS(crtc_ww_class
);
644 * drm_crtc_init_with_planes - Initialise a new CRTC object with
645 * specified primary and cursor planes.
647 * @crtc: CRTC object to init
648 * @primary: Primary plane for CRTC
649 * @cursor: Cursor plane for CRTC
650 * @funcs: callbacks for the new CRTC
652 * Inits a new object created as base part of a driver crtc object.
655 * Zero on success, error code on failure.
657 int drm_crtc_init_with_planes(struct drm_device
*dev
, struct drm_crtc
*crtc
,
658 struct drm_plane
*primary
,
659 struct drm_plane
*cursor
,
660 const struct drm_crtc_funcs
*funcs
)
662 struct drm_mode_config
*config
= &dev
->mode_config
;
665 WARN_ON(primary
&& primary
->type
!= DRM_PLANE_TYPE_PRIMARY
);
666 WARN_ON(cursor
&& cursor
->type
!= DRM_PLANE_TYPE_CURSOR
);
670 crtc
->invert_dimensions
= false;
672 drm_modeset_lock_init(&crtc
->mutex
);
673 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
677 crtc
->base
.properties
= &crtc
->properties
;
679 list_add_tail(&crtc
->head
, &config
->crtc_list
);
682 crtc
->primary
= primary
;
683 crtc
->cursor
= cursor
;
685 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
687 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
689 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
690 drm_object_attach_property(&crtc
->base
, config
->prop_active
, 0);
695 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
698 * drm_crtc_cleanup - Clean up the core crtc usage
699 * @crtc: CRTC to cleanup
701 * This function cleans up @crtc and removes it from the DRM mode setting
702 * core. Note that the function does *not* free the crtc structure itself,
703 * this is the responsibility of the caller.
705 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
707 struct drm_device
*dev
= crtc
->dev
;
709 kfree(crtc
->gamma_store
);
710 crtc
->gamma_store
= NULL
;
712 drm_modeset_lock_fini(&crtc
->mutex
);
714 drm_mode_object_put(dev
, &crtc
->base
);
715 list_del(&crtc
->head
);
716 dev
->mode_config
.num_crtc
--;
718 WARN_ON(crtc
->state
&& !crtc
->funcs
->atomic_destroy_state
);
719 if (crtc
->state
&& crtc
->funcs
->atomic_destroy_state
)
720 crtc
->funcs
->atomic_destroy_state(crtc
, crtc
->state
);
722 memset(crtc
, 0, sizeof(*crtc
));
724 EXPORT_SYMBOL(drm_crtc_cleanup
);
727 * drm_crtc_index - find the index of a registered CRTC
728 * @crtc: CRTC to find index for
730 * Given a registered CRTC, return the index of that CRTC within a DRM
731 * device's list of CRTCs.
733 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
735 unsigned int index
= 0;
736 struct drm_crtc
*tmp
;
738 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
747 EXPORT_SYMBOL(drm_crtc_index
);
750 * drm_mode_remove - remove and free a mode
751 * @connector: connector list to modify
752 * @mode: mode to remove
754 * Remove @mode from @connector's mode list, then free it.
756 static void drm_mode_remove(struct drm_connector
*connector
,
757 struct drm_display_mode
*mode
)
759 list_del(&mode
->head
);
760 drm_mode_destroy(connector
->dev
, mode
);
764 * drm_display_info_set_bus_formats - set the supported bus formats
765 * @info: display info to store bus formats in
766 * @formats: array containing the supported bus formats
767 * @num_formats: the number of entries in the fmts array
769 * Store the supported bus formats in display info structure.
770 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
771 * a full list of available formats.
773 int drm_display_info_set_bus_formats(struct drm_display_info
*info
,
775 unsigned int num_formats
)
779 if (!formats
&& num_formats
)
782 if (formats
&& num_formats
) {
783 fmts
= kmemdup(formats
, sizeof(*formats
) * num_formats
,
789 kfree(info
->bus_formats
);
790 info
->bus_formats
= fmts
;
791 info
->num_bus_formats
= num_formats
;
795 EXPORT_SYMBOL(drm_display_info_set_bus_formats
);
798 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
799 * @connector: connector to quwery
801 * The kernel supports per-connector configration of its consoles through
802 * use of the video= parameter. This function parses that option and
803 * extracts the user's specified mode (or enable/disable status) for a
804 * particular connector. This is typically only used during the early fbdev
807 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
809 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
812 if (fb_get_options(connector
->name
, &option
))
815 if (!drm_mode_parse_command_line_for_connector(option
,
823 switch (mode
->force
) {
827 case DRM_FORCE_ON_DIGITAL
:
836 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
837 connector
->force
= mode
->force
;
840 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
842 mode
->xres
, mode
->yres
,
843 mode
->refresh_specified
? mode
->refresh
: 60,
844 mode
->rb
? " reduced blanking" : "",
845 mode
->margins
? " with margins" : "",
846 mode
->interlace
? " interlaced" : "");
850 * drm_connector_init - Init a preallocated connector
852 * @connector: the connector to init
853 * @funcs: callbacks for this connector
854 * @connector_type: user visible type of the connector
856 * Initialises a preallocated connector. Connectors should be
857 * subclassed as part of driver connector objects.
860 * Zero on success, error code on failure.
862 int drm_connector_init(struct drm_device
*dev
,
863 struct drm_connector
*connector
,
864 const struct drm_connector_funcs
*funcs
,
867 struct drm_mode_config
*config
= &dev
->mode_config
;
869 struct ida
*connector_ida
=
870 &drm_connector_enum_list
[connector_type
].ida
;
872 drm_modeset_lock_all(dev
);
874 ret
= drm_mode_object_get_reg(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
, false);
878 connector
->base
.properties
= &connector
->properties
;
879 connector
->dev
= dev
;
880 connector
->funcs
= funcs
;
881 connector
->connector_type
= connector_type
;
882 connector
->connector_type_id
=
883 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
884 if (connector
->connector_type_id
< 0) {
885 ret
= connector
->connector_type_id
;
889 kasprintf(GFP_KERNEL
, "%s-%d",
890 drm_connector_enum_list
[connector_type
].name
,
891 connector
->connector_type_id
);
892 if (!connector
->name
) {
897 INIT_LIST_HEAD(&connector
->probed_modes
);
898 INIT_LIST_HEAD(&connector
->modes
);
899 connector
->edid_blob_ptr
= NULL
;
900 connector
->status
= connector_status_unknown
;
902 drm_connector_get_cmdline_mode(connector
);
904 /* We should add connectors at the end to avoid upsetting the connector
906 list_add_tail(&connector
->head
, &config
->connector_list
);
907 config
->num_connector
++;
909 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
910 drm_object_attach_property(&connector
->base
,
911 config
->edid_property
,
914 drm_object_attach_property(&connector
->base
,
915 config
->dpms_property
, 0);
917 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
918 drm_object_attach_property(&connector
->base
, config
->prop_crtc_id
, 0);
921 connector
->debugfs_entry
= NULL
;
925 drm_mode_object_put(dev
, &connector
->base
);
928 drm_modeset_unlock_all(dev
);
932 EXPORT_SYMBOL(drm_connector_init
);
935 * drm_connector_cleanup - cleans up an initialised connector
936 * @connector: connector to cleanup
938 * Cleans up the connector but doesn't free the object.
940 void drm_connector_cleanup(struct drm_connector
*connector
)
942 struct drm_device
*dev
= connector
->dev
;
943 struct drm_display_mode
*mode
, *t
;
945 if (connector
->tile_group
) {
946 drm_mode_put_tile_group(dev
, connector
->tile_group
);
947 connector
->tile_group
= NULL
;
950 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
951 drm_mode_remove(connector
, mode
);
953 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
954 drm_mode_remove(connector
, mode
);
956 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
957 connector
->connector_type_id
);
959 kfree(connector
->display_info
.bus_formats
);
960 drm_mode_object_put(dev
, &connector
->base
);
961 kfree(connector
->name
);
962 connector
->name
= NULL
;
963 list_del(&connector
->head
);
964 dev
->mode_config
.num_connector
--;
966 WARN_ON(connector
->state
&& !connector
->funcs
->atomic_destroy_state
);
967 if (connector
->state
&& connector
->funcs
->atomic_destroy_state
)
968 connector
->funcs
->atomic_destroy_state(connector
,
971 memset(connector
, 0, sizeof(*connector
));
973 EXPORT_SYMBOL(drm_connector_cleanup
);
976 * drm_connector_index - find the index of a registered connector
977 * @connector: connector to find index for
979 * Given a registered connector, return the index of that connector within a DRM
980 * device's list of connectors.
982 unsigned int drm_connector_index(struct drm_connector
*connector
)
984 unsigned int index
= 0;
985 struct drm_connector
*tmp
;
986 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
988 WARN_ON(!drm_modeset_is_locked(&config
->connection_mutex
));
990 list_for_each_entry(tmp
, &connector
->dev
->mode_config
.connector_list
, head
) {
991 if (tmp
== connector
)
999 EXPORT_SYMBOL(drm_connector_index
);
1002 * drm_connector_register - register a connector
1003 * @connector: the connector to register
1005 * Register userspace interfaces for a connector
1008 * Zero on success, error code on failure.
1010 int drm_connector_register(struct drm_connector
*connector
)
1014 drm_mode_object_register(connector
->dev
, &connector
->base
);
1016 ret
= drm_sysfs_connector_add(connector
);
1020 ret
= drm_debugfs_connector_add(connector
);
1022 drm_sysfs_connector_remove(connector
);
1028 EXPORT_SYMBOL(drm_connector_register
);
1031 * drm_connector_unregister - unregister a connector
1032 * @connector: the connector to unregister
1034 * Unregister userspace interfaces for a connector
1036 void drm_connector_unregister(struct drm_connector
*connector
)
1038 drm_sysfs_connector_remove(connector
);
1039 drm_debugfs_connector_remove(connector
);
1041 EXPORT_SYMBOL(drm_connector_unregister
);
1045 * drm_connector_unplug_all - unregister connector userspace interfaces
1048 * This function unregisters all connector userspace interfaces in sysfs. Should
1049 * be call when the device is disconnected, e.g. from an usb driver's
1050 * ->disconnect callback.
1052 void drm_connector_unplug_all(struct drm_device
*dev
)
1054 struct drm_connector
*connector
;
1056 /* taking the mode config mutex ends up in a clash with sysfs */
1057 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1058 drm_connector_unregister(connector
);
1061 EXPORT_SYMBOL(drm_connector_unplug_all
);
1064 * drm_encoder_init - Init a preallocated encoder
1066 * @encoder: the encoder to init
1067 * @funcs: callbacks for this encoder
1068 * @encoder_type: user visible type of the encoder
1070 * Initialises a preallocated encoder. Encoder should be
1071 * subclassed as part of driver encoder objects.
1074 * Zero on success, error code on failure.
1076 int drm_encoder_init(struct drm_device
*dev
,
1077 struct drm_encoder
*encoder
,
1078 const struct drm_encoder_funcs
*funcs
,
1083 drm_modeset_lock_all(dev
);
1085 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1090 encoder
->encoder_type
= encoder_type
;
1091 encoder
->funcs
= funcs
;
1092 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1093 drm_encoder_enum_list
[encoder_type
].name
,
1095 if (!encoder
->name
) {
1100 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1101 dev
->mode_config
.num_encoder
++;
1105 drm_mode_object_put(dev
, &encoder
->base
);
1108 drm_modeset_unlock_all(dev
);
1112 EXPORT_SYMBOL(drm_encoder_init
);
1115 * drm_encoder_cleanup - cleans up an initialised encoder
1116 * @encoder: encoder to cleanup
1118 * Cleans up the encoder but doesn't free the object.
1120 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1122 struct drm_device
*dev
= encoder
->dev
;
1124 drm_modeset_lock_all(dev
);
1125 drm_mode_object_put(dev
, &encoder
->base
);
1126 kfree(encoder
->name
);
1127 list_del(&encoder
->head
);
1128 dev
->mode_config
.num_encoder
--;
1129 drm_modeset_unlock_all(dev
);
1131 memset(encoder
, 0, sizeof(*encoder
));
1133 EXPORT_SYMBOL(drm_encoder_cleanup
);
1136 * drm_universal_plane_init - Initialize a new universal plane object
1138 * @plane: plane object to init
1139 * @possible_crtcs: bitmask of possible CRTCs
1140 * @funcs: callbacks for the new plane
1141 * @formats: array of supported formats (%DRM_FORMAT_*)
1142 * @format_count: number of elements in @formats
1143 * @type: type of plane (overlay, primary, cursor)
1145 * Initializes a plane object of type @type.
1148 * Zero on success, error code on failure.
1150 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1151 unsigned long possible_crtcs
,
1152 const struct drm_plane_funcs
*funcs
,
1153 const uint32_t *formats
, uint32_t format_count
,
1154 enum drm_plane_type type
)
1156 struct drm_mode_config
*config
= &dev
->mode_config
;
1159 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1163 drm_modeset_lock_init(&plane
->mutex
);
1165 plane
->base
.properties
= &plane
->properties
;
1167 plane
->funcs
= funcs
;
1168 plane
->format_types
= kmalloc_array(format_count
, sizeof(uint32_t),
1170 if (!plane
->format_types
) {
1171 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1172 drm_mode_object_put(dev
, &plane
->base
);
1176 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1177 plane
->format_count
= format_count
;
1178 plane
->possible_crtcs
= possible_crtcs
;
1181 list_add_tail(&plane
->head
, &config
->plane_list
);
1182 config
->num_total_plane
++;
1183 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1184 config
->num_overlay_plane
++;
1186 drm_object_attach_property(&plane
->base
,
1187 config
->plane_type_property
,
1190 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
1191 drm_object_attach_property(&plane
->base
, config
->prop_fb_id
, 0);
1192 drm_object_attach_property(&plane
->base
, config
->prop_crtc_id
, 0);
1193 drm_object_attach_property(&plane
->base
, config
->prop_crtc_x
, 0);
1194 drm_object_attach_property(&plane
->base
, config
->prop_crtc_y
, 0);
1195 drm_object_attach_property(&plane
->base
, config
->prop_crtc_w
, 0);
1196 drm_object_attach_property(&plane
->base
, config
->prop_crtc_h
, 0);
1197 drm_object_attach_property(&plane
->base
, config
->prop_src_x
, 0);
1198 drm_object_attach_property(&plane
->base
, config
->prop_src_y
, 0);
1199 drm_object_attach_property(&plane
->base
, config
->prop_src_w
, 0);
1200 drm_object_attach_property(&plane
->base
, config
->prop_src_h
, 0);
1205 EXPORT_SYMBOL(drm_universal_plane_init
);
1208 * drm_plane_init - Initialize a legacy plane
1210 * @plane: plane object to init
1211 * @possible_crtcs: bitmask of possible CRTCs
1212 * @funcs: callbacks for the new plane
1213 * @formats: array of supported formats (%DRM_FORMAT_*)
1214 * @format_count: number of elements in @formats
1215 * @is_primary: plane type (primary vs overlay)
1217 * Legacy API to initialize a DRM plane.
1219 * New drivers should call drm_universal_plane_init() instead.
1222 * Zero on success, error code on failure.
1224 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1225 unsigned long possible_crtcs
,
1226 const struct drm_plane_funcs
*funcs
,
1227 const uint32_t *formats
, uint32_t format_count
,
1230 enum drm_plane_type type
;
1232 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1233 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1234 formats
, format_count
, type
);
1236 EXPORT_SYMBOL(drm_plane_init
);
1239 * drm_plane_cleanup - Clean up the core plane usage
1240 * @plane: plane to cleanup
1242 * This function cleans up @plane and removes it from the DRM mode setting
1243 * core. Note that the function does *not* free the plane structure itself,
1244 * this is the responsibility of the caller.
1246 void drm_plane_cleanup(struct drm_plane
*plane
)
1248 struct drm_device
*dev
= plane
->dev
;
1250 drm_modeset_lock_all(dev
);
1251 kfree(plane
->format_types
);
1252 drm_mode_object_put(dev
, &plane
->base
);
1254 BUG_ON(list_empty(&plane
->head
));
1256 list_del(&plane
->head
);
1257 dev
->mode_config
.num_total_plane
--;
1258 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1259 dev
->mode_config
.num_overlay_plane
--;
1260 drm_modeset_unlock_all(dev
);
1262 WARN_ON(plane
->state
&& !plane
->funcs
->atomic_destroy_state
);
1263 if (plane
->state
&& plane
->funcs
->atomic_destroy_state
)
1264 plane
->funcs
->atomic_destroy_state(plane
, plane
->state
);
1266 memset(plane
, 0, sizeof(*plane
));
1268 EXPORT_SYMBOL(drm_plane_cleanup
);
1271 * drm_plane_index - find the index of a registered plane
1272 * @plane: plane to find index for
1274 * Given a registered plane, return the index of that CRTC within a DRM
1275 * device's list of planes.
1277 unsigned int drm_plane_index(struct drm_plane
*plane
)
1279 unsigned int index
= 0;
1280 struct drm_plane
*tmp
;
1282 list_for_each_entry(tmp
, &plane
->dev
->mode_config
.plane_list
, head
) {
1291 EXPORT_SYMBOL(drm_plane_index
);
1294 * drm_plane_from_index - find the registered plane at an index
1296 * @idx: index of registered plane to find for
1298 * Given a plane index, return the registered plane from DRM device's
1299 * list of planes with matching index.
1302 drm_plane_from_index(struct drm_device
*dev
, int idx
)
1304 struct drm_plane
*plane
;
1307 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
) {
1314 EXPORT_SYMBOL(drm_plane_from_index
);
1317 * drm_plane_force_disable - Forcibly disable a plane
1318 * @plane: plane to disable
1320 * Forces the plane to be disabled.
1322 * Used when the plane's current framebuffer is destroyed,
1323 * and when restoring fbdev mode.
1325 void drm_plane_force_disable(struct drm_plane
*plane
)
1332 plane
->old_fb
= plane
->fb
;
1333 ret
= plane
->funcs
->disable_plane(plane
);
1335 DRM_ERROR("failed to disable plane with busy fb\n");
1336 plane
->old_fb
= NULL
;
1339 /* disconnect the plane from the fb and crtc: */
1340 drm_framebuffer_unreference(plane
->old_fb
);
1341 plane
->old_fb
= NULL
;
1345 EXPORT_SYMBOL(drm_plane_force_disable
);
1347 static int drm_mode_create_standard_properties(struct drm_device
*dev
)
1349 struct drm_property
*prop
;
1352 * Standard properties (apply to all connectors)
1354 prop
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1355 DRM_MODE_PROP_IMMUTABLE
,
1359 dev
->mode_config
.edid_property
= prop
;
1361 prop
= drm_property_create_enum(dev
, 0,
1362 "DPMS", drm_dpms_enum_list
,
1363 ARRAY_SIZE(drm_dpms_enum_list
));
1366 dev
->mode_config
.dpms_property
= prop
;
1368 prop
= drm_property_create(dev
,
1369 DRM_MODE_PROP_BLOB
|
1370 DRM_MODE_PROP_IMMUTABLE
,
1374 dev
->mode_config
.path_property
= prop
;
1376 prop
= drm_property_create(dev
,
1377 DRM_MODE_PROP_BLOB
|
1378 DRM_MODE_PROP_IMMUTABLE
,
1382 dev
->mode_config
.tile_property
= prop
;
1384 prop
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1385 "type", drm_plane_type_enum_list
,
1386 ARRAY_SIZE(drm_plane_type_enum_list
));
1389 dev
->mode_config
.plane_type_property
= prop
;
1391 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1392 "SRC_X", 0, UINT_MAX
);
1395 dev
->mode_config
.prop_src_x
= prop
;
1397 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1398 "SRC_Y", 0, UINT_MAX
);
1401 dev
->mode_config
.prop_src_y
= prop
;
1403 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1404 "SRC_W", 0, UINT_MAX
);
1407 dev
->mode_config
.prop_src_w
= prop
;
1409 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1410 "SRC_H", 0, UINT_MAX
);
1413 dev
->mode_config
.prop_src_h
= prop
;
1415 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1416 "CRTC_X", INT_MIN
, INT_MAX
);
1419 dev
->mode_config
.prop_crtc_x
= prop
;
1421 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1422 "CRTC_Y", INT_MIN
, INT_MAX
);
1425 dev
->mode_config
.prop_crtc_y
= prop
;
1427 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1428 "CRTC_W", 0, INT_MAX
);
1431 dev
->mode_config
.prop_crtc_w
= prop
;
1433 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1434 "CRTC_H", 0, INT_MAX
);
1437 dev
->mode_config
.prop_crtc_h
= prop
;
1439 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1440 "FB_ID", DRM_MODE_OBJECT_FB
);
1443 dev
->mode_config
.prop_fb_id
= prop
;
1445 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1446 "CRTC_ID", DRM_MODE_OBJECT_CRTC
);
1449 dev
->mode_config
.prop_crtc_id
= prop
;
1451 prop
= drm_property_create_bool(dev
, DRM_MODE_PROP_ATOMIC
,
1455 dev
->mode_config
.prop_active
= prop
;
1461 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1464 * Called by a driver the first time a DVI-I connector is made.
1466 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1468 struct drm_property
*dvi_i_selector
;
1469 struct drm_property
*dvi_i_subconnector
;
1471 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1475 drm_property_create_enum(dev
, 0,
1476 "select subconnector",
1477 drm_dvi_i_select_enum_list
,
1478 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1479 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1481 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1483 drm_dvi_i_subconnector_enum_list
,
1484 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1485 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1489 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1492 * drm_create_tv_properties - create TV specific connector properties
1494 * @num_modes: number of different TV formats (modes) supported
1495 * @modes: array of pointers to strings containing name of each format
1497 * Called by a driver's TV initialization routine, this function creates
1498 * the TV specific connector properties for a given device. Caller is
1499 * responsible for allocating a list of format names and passing them to
1502 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1503 unsigned int num_modes
,
1506 struct drm_property
*tv_selector
;
1507 struct drm_property
*tv_subconnector
;
1510 if (dev
->mode_config
.tv_select_subconnector_property
)
1514 * Basic connector properties
1516 tv_selector
= drm_property_create_enum(dev
, 0,
1517 "select subconnector",
1518 drm_tv_select_enum_list
,
1519 ARRAY_SIZE(drm_tv_select_enum_list
));
1520 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1523 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1525 drm_tv_subconnector_enum_list
,
1526 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1527 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1530 * Other, TV specific properties: margins & TV modes.
1532 dev
->mode_config
.tv_left_margin_property
=
1533 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1535 dev
->mode_config
.tv_right_margin_property
=
1536 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1538 dev
->mode_config
.tv_top_margin_property
=
1539 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1541 dev
->mode_config
.tv_bottom_margin_property
=
1542 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1544 dev
->mode_config
.tv_mode_property
=
1545 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1547 for (i
= 0; i
< num_modes
; i
++)
1548 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1551 dev
->mode_config
.tv_brightness_property
=
1552 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1554 dev
->mode_config
.tv_contrast_property
=
1555 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1557 dev
->mode_config
.tv_flicker_reduction_property
=
1558 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1560 dev
->mode_config
.tv_overscan_property
=
1561 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1563 dev
->mode_config
.tv_saturation_property
=
1564 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1566 dev
->mode_config
.tv_hue_property
=
1567 drm_property_create_range(dev
, 0, "hue", 0, 100);
1571 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1574 * drm_mode_create_scaling_mode_property - create scaling mode property
1577 * Called by a driver the first time it's needed, must be attached to desired
1580 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1582 struct drm_property
*scaling_mode
;
1584 if (dev
->mode_config
.scaling_mode_property
)
1588 drm_property_create_enum(dev
, 0, "scaling mode",
1589 drm_scaling_mode_enum_list
,
1590 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1592 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1596 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1599 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1602 * Called by a driver the first time it's needed, must be attached to desired
1606 * Zero on success, negative errno on failure.
1608 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1610 if (dev
->mode_config
.aspect_ratio_property
)
1613 dev
->mode_config
.aspect_ratio_property
=
1614 drm_property_create_enum(dev
, 0, "aspect ratio",
1615 drm_aspect_ratio_enum_list
,
1616 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1618 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1623 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1626 * drm_mode_create_dirty_property - create dirty property
1629 * Called by a driver the first time it's needed, must be attached to desired
1632 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1634 struct drm_property
*dirty_info
;
1636 if (dev
->mode_config
.dirty_info_property
)
1640 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1642 drm_dirty_info_enum_list
,
1643 ARRAY_SIZE(drm_dirty_info_enum_list
));
1644 dev
->mode_config
.dirty_info_property
= dirty_info
;
1648 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1651 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1654 * Create the the suggested x/y offset property for connectors.
1656 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1658 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1661 dev
->mode_config
.suggested_x_property
=
1662 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1664 dev
->mode_config
.suggested_y_property
=
1665 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1667 if (dev
->mode_config
.suggested_x_property
== NULL
||
1668 dev
->mode_config
.suggested_y_property
== NULL
)
1672 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1674 static int drm_mode_group_init(struct drm_device
*dev
, struct drm_mode_group
*group
)
1676 uint32_t total_objects
= 0;
1678 total_objects
+= dev
->mode_config
.num_crtc
;
1679 total_objects
+= dev
->mode_config
.num_connector
;
1680 total_objects
+= dev
->mode_config
.num_encoder
;
1682 group
->id_list
= kcalloc(total_objects
, sizeof(uint32_t), GFP_KERNEL
);
1683 if (!group
->id_list
)
1686 group
->num_crtcs
= 0;
1687 group
->num_connectors
= 0;
1688 group
->num_encoders
= 0;
1692 void drm_mode_group_destroy(struct drm_mode_group
*group
)
1694 kfree(group
->id_list
);
1695 group
->id_list
= NULL
;
1699 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1700 * the drm core's responsibility to set up mode control groups.
1702 int drm_mode_group_init_legacy_group(struct drm_device
*dev
,
1703 struct drm_mode_group
*group
)
1705 struct drm_crtc
*crtc
;
1706 struct drm_encoder
*encoder
;
1707 struct drm_connector
*connector
;
1710 ret
= drm_mode_group_init(dev
, group
);
1714 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
1715 group
->id_list
[group
->num_crtcs
++] = crtc
->base
.id
;
1717 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
1718 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
++] =
1721 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1722 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1723 group
->num_connectors
++] = connector
->base
.id
;
1727 EXPORT_SYMBOL(drm_mode_group_init_legacy_group
);
1729 void drm_reinit_primary_mode_group(struct drm_device
*dev
)
1731 drm_modeset_lock_all(dev
);
1732 drm_mode_group_destroy(&dev
->primary
->mode_group
);
1733 drm_mode_group_init_legacy_group(dev
, &dev
->primary
->mode_group
);
1734 drm_modeset_unlock_all(dev
);
1736 EXPORT_SYMBOL(drm_reinit_primary_mode_group
);
1739 * drm_mode_getresources - get graphics configuration
1740 * @dev: drm device for the ioctl
1741 * @data: data pointer for the ioctl
1742 * @file_priv: drm file for the ioctl call
1744 * Construct a set of configuration description structures and return
1745 * them to the user, including CRTC, connector and framebuffer configuration.
1747 * Called by the user via ioctl.
1750 * Zero on success, negative errno on failure.
1752 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1753 struct drm_file
*file_priv
)
1755 struct drm_mode_card_res
*card_res
= data
;
1756 struct list_head
*lh
;
1757 struct drm_framebuffer
*fb
;
1758 struct drm_connector
*connector
;
1759 struct drm_crtc
*crtc
;
1760 struct drm_encoder
*encoder
;
1762 int connector_count
= 0;
1765 int encoder_count
= 0;
1767 uint32_t __user
*fb_id
;
1768 uint32_t __user
*crtc_id
;
1769 uint32_t __user
*connector_id
;
1770 uint32_t __user
*encoder_id
;
1771 struct drm_mode_group
*mode_group
;
1773 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1777 mutex_lock(&file_priv
->fbs_lock
);
1779 * For the non-control nodes we need to limit the list of resources
1780 * by IDs in the group list for this node
1782 list_for_each(lh
, &file_priv
->fbs
)
1785 /* handle this in 4 parts */
1787 if (card_res
->count_fbs
>= fb_count
) {
1789 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1790 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1791 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1792 mutex_unlock(&file_priv
->fbs_lock
);
1798 card_res
->count_fbs
= fb_count
;
1799 mutex_unlock(&file_priv
->fbs_lock
);
1801 /* mode_config.mutex protects the connector list against e.g. DP MST
1802 * connector hot-adding. CRTC/Plane lists are invariant. */
1803 mutex_lock(&dev
->mode_config
.mutex
);
1804 if (!drm_is_primary_client(file_priv
)) {
1807 list_for_each(lh
, &dev
->mode_config
.crtc_list
)
1810 list_for_each(lh
, &dev
->mode_config
.connector_list
)
1813 list_for_each(lh
, &dev
->mode_config
.encoder_list
)
1817 mode_group
= &file_priv
->master
->minor
->mode_group
;
1818 crtc_count
= mode_group
->num_crtcs
;
1819 connector_count
= mode_group
->num_connectors
;
1820 encoder_count
= mode_group
->num_encoders
;
1823 card_res
->max_height
= dev
->mode_config
.max_height
;
1824 card_res
->min_height
= dev
->mode_config
.min_height
;
1825 card_res
->max_width
= dev
->mode_config
.max_width
;
1826 card_res
->min_width
= dev
->mode_config
.min_width
;
1829 if (card_res
->count_crtcs
>= crtc_count
) {
1831 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1833 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
,
1835 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1836 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1843 for (i
= 0; i
< mode_group
->num_crtcs
; i
++) {
1844 if (put_user(mode_group
->id_list
[i
],
1845 crtc_id
+ copied
)) {
1853 card_res
->count_crtcs
= crtc_count
;
1856 if (card_res
->count_encoders
>= encoder_count
) {
1858 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1860 list_for_each_entry(encoder
,
1861 &dev
->mode_config
.encoder_list
,
1863 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1865 if (put_user(encoder
->base
.id
, encoder_id
+
1873 for (i
= mode_group
->num_crtcs
; i
< mode_group
->num_crtcs
+ mode_group
->num_encoders
; i
++) {
1874 if (put_user(mode_group
->id_list
[i
],
1875 encoder_id
+ copied
)) {
1884 card_res
->count_encoders
= encoder_count
;
1887 if (card_res
->count_connectors
>= connector_count
) {
1889 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1891 list_for_each_entry(connector
,
1892 &dev
->mode_config
.connector_list
,
1894 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1897 if (put_user(connector
->base
.id
,
1898 connector_id
+ copied
)) {
1905 int start
= mode_group
->num_crtcs
+
1906 mode_group
->num_encoders
;
1907 for (i
= start
; i
< start
+ mode_group
->num_connectors
; i
++) {
1908 if (put_user(mode_group
->id_list
[i
],
1909 connector_id
+ copied
)) {
1917 card_res
->count_connectors
= connector_count
;
1919 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1920 card_res
->count_connectors
, card_res
->count_encoders
);
1923 mutex_unlock(&dev
->mode_config
.mutex
);
1928 * drm_mode_getcrtc - get CRTC configuration
1929 * @dev: drm device for the ioctl
1930 * @data: data pointer for the ioctl
1931 * @file_priv: drm file for the ioctl call
1933 * Construct a CRTC configuration structure to return to the user.
1935 * Called by the user via ioctl.
1938 * Zero on success, negative errno on failure.
1940 int drm_mode_getcrtc(struct drm_device
*dev
,
1941 void *data
, struct drm_file
*file_priv
)
1943 struct drm_mode_crtc
*crtc_resp
= data
;
1944 struct drm_crtc
*crtc
;
1946 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1949 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
1953 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
1954 crtc_resp
->gamma_size
= crtc
->gamma_size
;
1955 if (crtc
->primary
->fb
)
1956 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
1958 crtc_resp
->fb_id
= 0;
1961 crtc_resp
->x
= crtc
->primary
->state
->src_x
>> 16;
1962 crtc_resp
->y
= crtc
->primary
->state
->src_y
>> 16;
1963 if (crtc
->state
->enable
) {
1964 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->state
->mode
);
1965 crtc_resp
->mode_valid
= 1;
1968 crtc_resp
->mode_valid
= 0;
1971 crtc_resp
->x
= crtc
->x
;
1972 crtc_resp
->y
= crtc
->y
;
1973 if (crtc
->enabled
) {
1974 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
1975 crtc_resp
->mode_valid
= 1;
1978 crtc_resp
->mode_valid
= 0;
1981 drm_modeset_unlock_crtc(crtc
);
1986 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1987 const struct drm_file
*file_priv
)
1990 * If user-space hasn't configured the driver to expose the stereo 3D
1991 * modes, don't expose them.
1993 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
1999 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
2001 /* For atomic drivers only state objects are synchronously updated and
2002 * protected by modeset locks, so check those first. */
2003 if (connector
->state
)
2004 return connector
->state
->best_encoder
;
2005 return connector
->encoder
;
2008 /* helper for getconnector and getproperties ioctls */
2009 static int get_properties(struct drm_mode_object
*obj
, bool atomic
,
2010 uint32_t __user
*prop_ptr
, uint64_t __user
*prop_values
,
2011 uint32_t *arg_count_props
)
2016 props_count
= obj
->properties
->count
;
2018 props_count
-= obj
->properties
->atomic_count
;
2020 if ((*arg_count_props
>= props_count
) && props_count
) {
2021 for (i
= 0, copied
= 0; copied
< props_count
; i
++) {
2022 struct drm_property
*prop
= obj
->properties
->properties
[i
];
2025 if ((prop
->flags
& DRM_MODE_PROP_ATOMIC
) && !atomic
)
2028 ret
= drm_object_property_get_value(obj
, prop
, &val
);
2032 if (put_user(prop
->base
.id
, prop_ptr
+ copied
))
2035 if (put_user(val
, prop_values
+ copied
))
2041 *arg_count_props
= props_count
;
2047 * drm_mode_getconnector - get connector configuration
2048 * @dev: drm device for the ioctl
2049 * @data: data pointer for the ioctl
2050 * @file_priv: drm file for the ioctl call
2052 * Construct a connector configuration structure to return to the user.
2054 * Called by the user via ioctl.
2057 * Zero on success, negative errno on failure.
2059 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
2060 struct drm_file
*file_priv
)
2062 struct drm_mode_get_connector
*out_resp
= data
;
2063 struct drm_connector
*connector
;
2064 struct drm_encoder
*encoder
;
2065 struct drm_display_mode
*mode
;
2067 int encoders_count
= 0;
2071 struct drm_mode_modeinfo u_mode
;
2072 struct drm_mode_modeinfo __user
*mode_ptr
;
2073 uint32_t __user
*encoder_ptr
;
2075 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2078 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
2080 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
2082 mutex_lock(&dev
->mode_config
.mutex
);
2084 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
2090 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++)
2091 if (connector
->encoder_ids
[i
] != 0)
2094 if (out_resp
->count_modes
== 0) {
2095 connector
->funcs
->fill_modes(connector
,
2096 dev
->mode_config
.max_width
,
2097 dev
->mode_config
.max_height
);
2100 /* delayed so we get modes regardless of pre-fill_modes state */
2101 list_for_each_entry(mode
, &connector
->modes
, head
)
2102 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2105 out_resp
->connector_id
= connector
->base
.id
;
2106 out_resp
->connector_type
= connector
->connector_type
;
2107 out_resp
->connector_type_id
= connector
->connector_type_id
;
2108 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2109 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2110 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2111 out_resp
->connection
= connector
->status
;
2113 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2114 encoder
= drm_connector_get_encoder(connector
);
2116 out_resp
->encoder_id
= encoder
->base
.id
;
2118 out_resp
->encoder_id
= 0;
2121 * This ioctl is called twice, once to determine how much space is
2122 * needed, and the 2nd time to fill it.
2124 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2126 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2127 list_for_each_entry(mode
, &connector
->modes
, head
) {
2128 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2131 drm_mode_convert_to_umode(&u_mode
, mode
);
2132 if (copy_to_user(mode_ptr
+ copied
,
2133 &u_mode
, sizeof(u_mode
))) {
2140 out_resp
->count_modes
= mode_count
;
2142 ret
= get_properties(&connector
->base
, file_priv
->atomic
,
2143 (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
),
2144 (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
),
2145 &out_resp
->count_props
);
2149 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2151 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2152 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2153 if (connector
->encoder_ids
[i
] != 0) {
2154 if (put_user(connector
->encoder_ids
[i
],
2155 encoder_ptr
+ copied
)) {
2163 out_resp
->count_encoders
= encoders_count
;
2166 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2169 mutex_unlock(&dev
->mode_config
.mutex
);
2174 static struct drm_crtc
*drm_encoder_get_crtc(struct drm_encoder
*encoder
)
2176 struct drm_connector
*connector
;
2177 struct drm_device
*dev
= encoder
->dev
;
2178 bool uses_atomic
= false;
2180 /* For atomic drivers only state objects are synchronously updated and
2181 * protected by modeset locks, so check those first. */
2182 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
2183 if (!connector
->state
)
2188 if (connector
->state
->best_encoder
!= encoder
)
2191 return connector
->state
->crtc
;
2194 /* Don't return stale data (e.g. pending async disable). */
2198 return encoder
->crtc
;
2202 * drm_mode_getencoder - get encoder configuration
2203 * @dev: drm device for the ioctl
2204 * @data: data pointer for the ioctl
2205 * @file_priv: drm file for the ioctl call
2207 * Construct a encoder configuration structure to return to the user.
2209 * Called by the user via ioctl.
2212 * Zero on success, negative errno on failure.
2214 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2215 struct drm_file
*file_priv
)
2217 struct drm_mode_get_encoder
*enc_resp
= data
;
2218 struct drm_encoder
*encoder
;
2219 struct drm_crtc
*crtc
;
2221 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2224 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2228 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2229 crtc
= drm_encoder_get_crtc(encoder
);
2231 enc_resp
->crtc_id
= crtc
->base
.id
;
2233 enc_resp
->crtc_id
= 0;
2234 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2236 enc_resp
->encoder_type
= encoder
->encoder_type
;
2237 enc_resp
->encoder_id
= encoder
->base
.id
;
2238 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2239 enc_resp
->possible_clones
= encoder
->possible_clones
;
2245 * drm_mode_getplane_res - enumerate all plane resources
2248 * @file_priv: DRM file info
2250 * Construct a list of plane ids to return to the user.
2252 * Called by the user via ioctl.
2255 * Zero on success, negative errno on failure.
2257 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2258 struct drm_file
*file_priv
)
2260 struct drm_mode_get_plane_res
*plane_resp
= data
;
2261 struct drm_mode_config
*config
;
2262 struct drm_plane
*plane
;
2263 uint32_t __user
*plane_ptr
;
2265 unsigned num_planes
;
2267 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2270 config
= &dev
->mode_config
;
2272 if (file_priv
->universal_planes
)
2273 num_planes
= config
->num_total_plane
;
2275 num_planes
= config
->num_overlay_plane
;
2278 * This ioctl is called twice, once to determine how much space is
2279 * needed, and the 2nd time to fill it.
2282 (plane_resp
->count_planes
>= num_planes
)) {
2283 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2285 /* Plane lists are invariant, no locking needed. */
2286 list_for_each_entry(plane
, &config
->plane_list
, head
) {
2288 * Unless userspace set the 'universal planes'
2289 * capability bit, only advertise overlays.
2291 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2292 !file_priv
->universal_planes
)
2295 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2300 plane_resp
->count_planes
= num_planes
;
2306 * drm_mode_getplane - get plane configuration
2309 * @file_priv: DRM file info
2311 * Construct a plane configuration structure to return to the user.
2313 * Called by the user via ioctl.
2316 * Zero on success, negative errno on failure.
2318 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2319 struct drm_file
*file_priv
)
2321 struct drm_mode_get_plane
*plane_resp
= data
;
2322 struct drm_plane
*plane
;
2323 uint32_t __user
*format_ptr
;
2325 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2328 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2332 drm_modeset_lock(&plane
->mutex
, NULL
);
2334 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2336 plane_resp
->crtc_id
= 0;
2339 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2341 plane_resp
->fb_id
= 0;
2342 drm_modeset_unlock(&plane
->mutex
);
2344 plane_resp
->plane_id
= plane
->base
.id
;
2345 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2346 plane_resp
->gamma_size
= 0;
2349 * This ioctl is called twice, once to determine how much space is
2350 * needed, and the 2nd time to fill it.
2352 if (plane
->format_count
&&
2353 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2354 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2355 if (copy_to_user(format_ptr
,
2356 plane
->format_types
,
2357 sizeof(uint32_t) * plane
->format_count
)) {
2361 plane_resp
->count_format_types
= plane
->format_count
;
2367 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2368 * @plane: plane to check for format support
2369 * @format: the pixel format
2372 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2375 int drm_plane_check_pixel_format(const struct drm_plane
*plane
, u32 format
)
2379 for (i
= 0; i
< plane
->format_count
; i
++) {
2380 if (format
== plane
->format_types
[i
])
2388 * setplane_internal - setplane handler for internal callers
2390 * Note that we assume an extra reference has already been taken on fb. If the
2391 * update fails, this reference will be dropped before return; if it succeeds,
2392 * the previous framebuffer (if any) will be unreferenced instead.
2394 * src_{x,y,w,h} are provided in 16.16 fixed point format
2396 static int __setplane_internal(struct drm_plane
*plane
,
2397 struct drm_crtc
*crtc
,
2398 struct drm_framebuffer
*fb
,
2399 int32_t crtc_x
, int32_t crtc_y
,
2400 uint32_t crtc_w
, uint32_t crtc_h
,
2401 /* src_{x,y,w,h} values are 16.16 fixed point */
2402 uint32_t src_x
, uint32_t src_y
,
2403 uint32_t src_w
, uint32_t src_h
)
2406 unsigned int fb_width
, fb_height
;
2408 /* No fb means shut it down */
2410 plane
->old_fb
= plane
->fb
;
2411 ret
= plane
->funcs
->disable_plane(plane
);
2416 plane
->old_fb
= NULL
;
2421 /* Check whether this plane is usable on this CRTC */
2422 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2423 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2428 /* Check whether this plane supports the fb pixel format. */
2429 ret
= drm_plane_check_pixel_format(plane
, fb
->pixel_format
);
2431 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2432 drm_get_format_name(fb
->pixel_format
));
2436 /* Give drivers some help against integer overflows */
2437 if (crtc_w
> INT_MAX
||
2438 crtc_x
> INT_MAX
- (int32_t) crtc_w
||
2440 crtc_y
> INT_MAX
- (int32_t) crtc_h
) {
2441 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2442 crtc_w
, crtc_h
, crtc_x
, crtc_y
);
2447 fb_width
= fb
->width
<< 16;
2448 fb_height
= fb
->height
<< 16;
2450 /* Make sure source coordinates are inside the fb. */
2451 if (src_w
> fb_width
||
2452 src_x
> fb_width
- src_w
||
2453 src_h
> fb_height
||
2454 src_y
> fb_height
- src_h
) {
2455 DRM_DEBUG_KMS("Invalid source coordinates "
2456 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2457 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2458 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2459 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2460 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2465 plane
->old_fb
= plane
->fb
;
2466 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2467 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2468 src_x
, src_y
, src_w
, src_h
);
2474 plane
->old_fb
= NULL
;
2479 drm_framebuffer_unreference(fb
);
2481 drm_framebuffer_unreference(plane
->old_fb
);
2482 plane
->old_fb
= NULL
;
2487 static int setplane_internal(struct drm_plane
*plane
,
2488 struct drm_crtc
*crtc
,
2489 struct drm_framebuffer
*fb
,
2490 int32_t crtc_x
, int32_t crtc_y
,
2491 uint32_t crtc_w
, uint32_t crtc_h
,
2492 /* src_{x,y,w,h} values are 16.16 fixed point */
2493 uint32_t src_x
, uint32_t src_y
,
2494 uint32_t src_w
, uint32_t src_h
)
2498 drm_modeset_lock_all(plane
->dev
);
2499 ret
= __setplane_internal(plane
, crtc
, fb
,
2500 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2501 src_x
, src_y
, src_w
, src_h
);
2502 drm_modeset_unlock_all(plane
->dev
);
2508 * drm_mode_setplane - configure a plane's configuration
2510 * @data: ioctl data*
2511 * @file_priv: DRM file info
2513 * Set plane configuration, including placement, fb, scaling, and other factors.
2514 * Or pass a NULL fb to disable (planes may be disabled without providing a
2518 * Zero on success, negative errno on failure.
2520 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2521 struct drm_file
*file_priv
)
2523 struct drm_mode_set_plane
*plane_req
= data
;
2524 struct drm_plane
*plane
;
2525 struct drm_crtc
*crtc
= NULL
;
2526 struct drm_framebuffer
*fb
= NULL
;
2528 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2532 * First, find the plane, crtc, and fb objects. If not available,
2533 * we don't bother to call the driver.
2535 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
2537 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2538 plane_req
->plane_id
);
2542 if (plane_req
->fb_id
) {
2543 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2545 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2550 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
2552 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2553 plane_req
->crtc_id
);
2559 * setplane_internal will take care of deref'ing either the old or new
2560 * framebuffer depending on success.
2562 return setplane_internal(plane
, crtc
, fb
,
2563 plane_req
->crtc_x
, plane_req
->crtc_y
,
2564 plane_req
->crtc_w
, plane_req
->crtc_h
,
2565 plane_req
->src_x
, plane_req
->src_y
,
2566 plane_req
->src_w
, plane_req
->src_h
);
2570 * drm_mode_set_config_internal - helper to call ->set_config
2571 * @set: modeset config to set
2573 * This is a little helper to wrap internal calls to the ->set_config driver
2574 * interface. The only thing it adds is correct refcounting dance.
2577 * Zero on success, negative errno on failure.
2579 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2581 struct drm_crtc
*crtc
= set
->crtc
;
2582 struct drm_framebuffer
*fb
;
2583 struct drm_crtc
*tmp
;
2587 * NOTE: ->set_config can also disable other crtcs (if we steal all
2588 * connectors from it), hence we need to refcount the fbs across all
2589 * crtcs. Atomic modeset will have saner semantics ...
2591 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
)
2592 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2596 ret
= crtc
->funcs
->set_config(set
);
2598 crtc
->primary
->crtc
= crtc
;
2599 crtc
->primary
->fb
= fb
;
2602 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
2603 if (tmp
->primary
->fb
)
2604 drm_framebuffer_reference(tmp
->primary
->fb
);
2605 if (tmp
->primary
->old_fb
)
2606 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2607 tmp
->primary
->old_fb
= NULL
;
2612 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2615 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2616 * @mode: mode to query
2617 * @hdisplay: hdisplay value to fill in
2618 * @vdisplay: vdisplay value to fill in
2620 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2621 * the appropriate layout.
2623 void drm_crtc_get_hv_timing(const struct drm_display_mode
*mode
,
2624 int *hdisplay
, int *vdisplay
)
2626 struct drm_display_mode adjusted
;
2628 drm_mode_copy(&adjusted
, mode
);
2629 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE_ONLY
);
2630 *hdisplay
= adjusted
.crtc_hdisplay
;
2631 *vdisplay
= adjusted
.crtc_vdisplay
;
2633 EXPORT_SYMBOL(drm_crtc_get_hv_timing
);
2636 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2638 * @crtc: CRTC that framebuffer will be displayed on
2641 * @mode: mode that framebuffer will be displayed under
2642 * @fb: framebuffer to check size of
2644 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2646 const struct drm_display_mode
*mode
,
2647 const struct drm_framebuffer
*fb
)
2650 int hdisplay
, vdisplay
;
2652 drm_crtc_get_hv_timing(mode
, &hdisplay
, &vdisplay
);
2654 if (crtc
->invert_dimensions
)
2655 swap(hdisplay
, vdisplay
);
2657 if (hdisplay
> fb
->width
||
2658 vdisplay
> fb
->height
||
2659 x
> fb
->width
- hdisplay
||
2660 y
> fb
->height
- vdisplay
) {
2661 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2662 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2663 crtc
->invert_dimensions
? " (inverted)" : "");
2669 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2672 * drm_mode_setcrtc - set CRTC configuration
2673 * @dev: drm device for the ioctl
2674 * @data: data pointer for the ioctl
2675 * @file_priv: drm file for the ioctl call
2677 * Build a new CRTC configuration based on user request.
2679 * Called by the user via ioctl.
2682 * Zero on success, negative errno on failure.
2684 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2685 struct drm_file
*file_priv
)
2687 struct drm_mode_config
*config
= &dev
->mode_config
;
2688 struct drm_mode_crtc
*crtc_req
= data
;
2689 struct drm_crtc
*crtc
;
2690 struct drm_connector
**connector_set
= NULL
, *connector
;
2691 struct drm_framebuffer
*fb
= NULL
;
2692 struct drm_display_mode
*mode
= NULL
;
2693 struct drm_mode_set set
;
2694 uint32_t __user
*set_connectors_ptr
;
2698 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2701 /* For some reason crtc x/y offsets are signed internally. */
2702 if (crtc_req
->x
> INT_MAX
|| crtc_req
->y
> INT_MAX
)
2705 drm_modeset_lock_all(dev
);
2706 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2708 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2712 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2714 if (crtc_req
->mode_valid
) {
2715 /* If we have a mode we need a framebuffer. */
2716 /* If we pass -1, set the mode with the currently bound fb */
2717 if (crtc_req
->fb_id
== -1) {
2718 if (!crtc
->primary
->fb
) {
2719 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2723 fb
= crtc
->primary
->fb
;
2724 /* Make refcounting symmetric with the lookup path. */
2725 drm_framebuffer_reference(fb
);
2727 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2729 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2736 mode
= drm_mode_create(dev
);
2742 ret
= drm_mode_convert_umode(mode
, &crtc_req
->mode
);
2744 DRM_DEBUG_KMS("Invalid mode\n");
2748 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2751 * Check whether the primary plane supports the fb pixel format.
2752 * Drivers not implementing the universal planes API use a
2753 * default formats list provided by the DRM core which doesn't
2754 * match real hardware capabilities. Skip the check in that
2757 if (!crtc
->primary
->format_default
) {
2758 ret
= drm_plane_check_pixel_format(crtc
->primary
,
2761 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2762 drm_get_format_name(fb
->pixel_format
));
2767 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2774 if (crtc_req
->count_connectors
== 0 && mode
) {
2775 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2780 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2781 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2782 crtc_req
->count_connectors
);
2787 if (crtc_req
->count_connectors
> 0) {
2790 /* Avoid unbounded kernel memory allocation */
2791 if (crtc_req
->count_connectors
> config
->num_connector
) {
2796 connector_set
= kmalloc_array(crtc_req
->count_connectors
,
2797 sizeof(struct drm_connector
*),
2799 if (!connector_set
) {
2804 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2805 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2806 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2811 connector
= drm_connector_find(dev
, out_id
);
2813 DRM_DEBUG_KMS("Connector id %d unknown\n",
2818 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2822 connector_set
[i
] = connector
;
2827 set
.x
= crtc_req
->x
;
2828 set
.y
= crtc_req
->y
;
2830 set
.connectors
= connector_set
;
2831 set
.num_connectors
= crtc_req
->count_connectors
;
2833 ret
= drm_mode_set_config_internal(&set
);
2837 drm_framebuffer_unreference(fb
);
2839 kfree(connector_set
);
2840 drm_mode_destroy(dev
, mode
);
2841 drm_modeset_unlock_all(dev
);
2846 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2847 * universal plane handler call
2848 * @crtc: crtc to update cursor for
2849 * @req: data pointer for the ioctl
2850 * @file_priv: drm file for the ioctl call
2852 * Legacy cursor ioctl's work directly with driver buffer handles. To
2853 * translate legacy ioctl calls into universal plane handler calls, we need to
2854 * wrap the native buffer handle in a drm_framebuffer.
2856 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2857 * buffer with a pitch of 4*width; the universal plane interface should be used
2858 * directly in cases where the hardware can support other buffer settings and
2859 * userspace wants to make use of these capabilities.
2862 * Zero on success, negative errno on failure.
2864 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2865 struct drm_mode_cursor2
*req
,
2866 struct drm_file
*file_priv
)
2868 struct drm_device
*dev
= crtc
->dev
;
2869 struct drm_framebuffer
*fb
= NULL
;
2870 struct drm_mode_fb_cmd2 fbreq
= {
2871 .width
= req
->width
,
2872 .height
= req
->height
,
2873 .pixel_format
= DRM_FORMAT_ARGB8888
,
2874 .pitches
= { req
->width
* 4 },
2875 .handles
= { req
->handle
},
2877 int32_t crtc_x
, crtc_y
;
2878 uint32_t crtc_w
= 0, crtc_h
= 0;
2879 uint32_t src_w
= 0, src_h
= 0;
2882 BUG_ON(!crtc
->cursor
);
2883 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2886 * Obtain fb we'll be using (either new or existing) and take an extra
2887 * reference to it if fb != null. setplane will take care of dropping
2888 * the reference if the plane update fails.
2890 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2892 fb
= internal_framebuffer_create(dev
, &fbreq
, file_priv
);
2894 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2901 fb
= crtc
->cursor
->fb
;
2903 drm_framebuffer_reference(fb
);
2906 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2910 crtc_x
= crtc
->cursor_x
;
2911 crtc_y
= crtc
->cursor_y
;
2916 crtc_h
= fb
->height
;
2917 src_w
= fb
->width
<< 16;
2918 src_h
= fb
->height
<< 16;
2922 * setplane_internal will take care of deref'ing either the old or new
2923 * framebuffer depending on success.
2925 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2926 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2927 0, 0, src_w
, src_h
);
2929 /* Update successful; save new cursor position, if necessary */
2930 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2931 crtc
->cursor_x
= req
->x
;
2932 crtc
->cursor_y
= req
->y
;
2938 static int drm_mode_cursor_common(struct drm_device
*dev
,
2939 struct drm_mode_cursor2
*req
,
2940 struct drm_file
*file_priv
)
2942 struct drm_crtc
*crtc
;
2945 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2948 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2951 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2953 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2958 * If this crtc has a universal cursor plane, call that plane's update
2959 * handler rather than using legacy cursor handlers.
2961 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
2963 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2967 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2968 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2972 /* Turns off the cursor if handle is 0 */
2973 if (crtc
->funcs
->cursor_set2
)
2974 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2975 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2977 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2978 req
->width
, req
->height
);
2981 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2982 if (crtc
->funcs
->cursor_move
) {
2983 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
2990 drm_modeset_unlock_crtc(crtc
);
2998 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2999 * @dev: drm device for the ioctl
3000 * @data: data pointer for the ioctl
3001 * @file_priv: drm file for the ioctl call
3003 * Set the cursor configuration based on user request.
3005 * Called by the user via ioctl.
3008 * Zero on success, negative errno on failure.
3010 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
3011 void *data
, struct drm_file
*file_priv
)
3013 struct drm_mode_cursor
*req
= data
;
3014 struct drm_mode_cursor2 new_req
;
3016 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
3017 new_req
.hot_x
= new_req
.hot_y
= 0;
3019 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
3023 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3024 * @dev: drm device for the ioctl
3025 * @data: data pointer for the ioctl
3026 * @file_priv: drm file for the ioctl call
3028 * Set the cursor configuration based on user request. This implements the 2nd
3029 * version of the cursor ioctl, which allows userspace to additionally specify
3030 * the hotspot of the pointer.
3032 * Called by the user via ioctl.
3035 * Zero on success, negative errno on failure.
3037 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
3038 void *data
, struct drm_file
*file_priv
)
3040 struct drm_mode_cursor2
*req
= data
;
3042 return drm_mode_cursor_common(dev
, req
, file_priv
);
3046 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3047 * @bpp: bits per pixels
3048 * @depth: bit depth per pixel
3050 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3051 * Useful in fbdev emulation code, since that deals in those values.
3053 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
3059 fmt
= DRM_FORMAT_C8
;
3063 fmt
= DRM_FORMAT_XRGB1555
;
3065 fmt
= DRM_FORMAT_RGB565
;
3068 fmt
= DRM_FORMAT_RGB888
;
3072 fmt
= DRM_FORMAT_XRGB8888
;
3073 else if (depth
== 30)
3074 fmt
= DRM_FORMAT_XRGB2101010
;
3076 fmt
= DRM_FORMAT_ARGB8888
;
3079 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3080 fmt
= DRM_FORMAT_XRGB8888
;
3086 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
3089 * drm_mode_addfb - add an FB to the graphics configuration
3090 * @dev: drm device for the ioctl
3091 * @data: data pointer for the ioctl
3092 * @file_priv: drm file for the ioctl call
3094 * Add a new FB to the specified CRTC, given a user request. This is the
3095 * original addfb ioctl which only supported RGB formats.
3097 * Called by the user via ioctl.
3100 * Zero on success, negative errno on failure.
3102 int drm_mode_addfb(struct drm_device
*dev
,
3103 void *data
, struct drm_file
*file_priv
)
3105 struct drm_mode_fb_cmd
*or = data
;
3106 struct drm_mode_fb_cmd2 r
= {};
3109 /* convert to new format and call new ioctl */
3110 r
.fb_id
= or->fb_id
;
3111 r
.width
= or->width
;
3112 r
.height
= or->height
;
3113 r
.pitches
[0] = or->pitch
;
3114 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
3115 r
.handles
[0] = or->handle
;
3117 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
3121 or->fb_id
= r
.fb_id
;
3126 static int format_check(const struct drm_mode_fb_cmd2
*r
)
3128 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3132 case DRM_FORMAT_RGB332
:
3133 case DRM_FORMAT_BGR233
:
3134 case DRM_FORMAT_XRGB4444
:
3135 case DRM_FORMAT_XBGR4444
:
3136 case DRM_FORMAT_RGBX4444
:
3137 case DRM_FORMAT_BGRX4444
:
3138 case DRM_FORMAT_ARGB4444
:
3139 case DRM_FORMAT_ABGR4444
:
3140 case DRM_FORMAT_RGBA4444
:
3141 case DRM_FORMAT_BGRA4444
:
3142 case DRM_FORMAT_XRGB1555
:
3143 case DRM_FORMAT_XBGR1555
:
3144 case DRM_FORMAT_RGBX5551
:
3145 case DRM_FORMAT_BGRX5551
:
3146 case DRM_FORMAT_ARGB1555
:
3147 case DRM_FORMAT_ABGR1555
:
3148 case DRM_FORMAT_RGBA5551
:
3149 case DRM_FORMAT_BGRA5551
:
3150 case DRM_FORMAT_RGB565
:
3151 case DRM_FORMAT_BGR565
:
3152 case DRM_FORMAT_RGB888
:
3153 case DRM_FORMAT_BGR888
:
3154 case DRM_FORMAT_XRGB8888
:
3155 case DRM_FORMAT_XBGR8888
:
3156 case DRM_FORMAT_RGBX8888
:
3157 case DRM_FORMAT_BGRX8888
:
3158 case DRM_FORMAT_ARGB8888
:
3159 case DRM_FORMAT_ABGR8888
:
3160 case DRM_FORMAT_RGBA8888
:
3161 case DRM_FORMAT_BGRA8888
:
3162 case DRM_FORMAT_XRGB2101010
:
3163 case DRM_FORMAT_XBGR2101010
:
3164 case DRM_FORMAT_RGBX1010102
:
3165 case DRM_FORMAT_BGRX1010102
:
3166 case DRM_FORMAT_ARGB2101010
:
3167 case DRM_FORMAT_ABGR2101010
:
3168 case DRM_FORMAT_RGBA1010102
:
3169 case DRM_FORMAT_BGRA1010102
:
3170 case DRM_FORMAT_YUYV
:
3171 case DRM_FORMAT_YVYU
:
3172 case DRM_FORMAT_UYVY
:
3173 case DRM_FORMAT_VYUY
:
3174 case DRM_FORMAT_AYUV
:
3175 case DRM_FORMAT_NV12
:
3176 case DRM_FORMAT_NV21
:
3177 case DRM_FORMAT_NV16
:
3178 case DRM_FORMAT_NV61
:
3179 case DRM_FORMAT_NV24
:
3180 case DRM_FORMAT_NV42
:
3181 case DRM_FORMAT_YUV410
:
3182 case DRM_FORMAT_YVU410
:
3183 case DRM_FORMAT_YUV411
:
3184 case DRM_FORMAT_YVU411
:
3185 case DRM_FORMAT_YUV420
:
3186 case DRM_FORMAT_YVU420
:
3187 case DRM_FORMAT_YUV422
:
3188 case DRM_FORMAT_YVU422
:
3189 case DRM_FORMAT_YUV444
:
3190 case DRM_FORMAT_YVU444
:
3193 DRM_DEBUG_KMS("invalid pixel format %s\n",
3194 drm_get_format_name(r
->pixel_format
));
3199 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3201 int ret
, hsub
, vsub
, num_planes
, i
;
3203 ret
= format_check(r
);
3205 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3206 drm_get_format_name(r
->pixel_format
));
3210 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3211 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3212 num_planes
= drm_format_num_planes(r
->pixel_format
);
3214 if (r
->width
== 0 || r
->width
% hsub
) {
3215 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3219 if (r
->height
== 0 || r
->height
% vsub
) {
3220 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3224 for (i
= 0; i
< num_planes
; i
++) {
3225 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3226 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3227 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3229 if (!r
->handles
[i
]) {
3230 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3234 if ((uint64_t) width
* cpp
> UINT_MAX
)
3237 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3240 if (r
->pitches
[i
] < width
* cpp
) {
3241 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3245 if (r
->modifier
[i
] && !(r
->flags
& DRM_MODE_FB_MODIFIERS
)) {
3246 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3255 static struct drm_framebuffer
*
3256 internal_framebuffer_create(struct drm_device
*dev
,
3257 struct drm_mode_fb_cmd2
*r
,
3258 struct drm_file
*file_priv
)
3260 struct drm_mode_config
*config
= &dev
->mode_config
;
3261 struct drm_framebuffer
*fb
;
3264 if (r
->flags
& ~(DRM_MODE_FB_INTERLACED
| DRM_MODE_FB_MODIFIERS
)) {
3265 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3266 return ERR_PTR(-EINVAL
);
3269 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3270 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3271 r
->width
, config
->min_width
, config
->max_width
);
3272 return ERR_PTR(-EINVAL
);
3274 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3275 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3276 r
->height
, config
->min_height
, config
->max_height
);
3277 return ERR_PTR(-EINVAL
);
3280 if (r
->flags
& DRM_MODE_FB_MODIFIERS
&&
3281 !dev
->mode_config
.allow_fb_modifiers
) {
3282 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3283 return ERR_PTR(-EINVAL
);
3286 ret
= framebuffer_check(r
);
3288 return ERR_PTR(ret
);
3290 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3292 DRM_DEBUG_KMS("could not create framebuffer\n");
3300 * drm_mode_addfb2 - add an FB to the graphics configuration
3301 * @dev: drm device for the ioctl
3302 * @data: data pointer for the ioctl
3303 * @file_priv: drm file for the ioctl call
3305 * Add a new FB to the specified CRTC, given a user request with format. This is
3306 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3307 * and uses fourcc codes as pixel format specifiers.
3309 * Called by the user via ioctl.
3312 * Zero on success, negative errno on failure.
3314 int drm_mode_addfb2(struct drm_device
*dev
,
3315 void *data
, struct drm_file
*file_priv
)
3317 struct drm_mode_fb_cmd2
*r
= data
;
3318 struct drm_framebuffer
*fb
;
3320 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3323 fb
= internal_framebuffer_create(dev
, r
, file_priv
);
3327 /* Transfer ownership to the filp for reaping on close */
3329 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3330 mutex_lock(&file_priv
->fbs_lock
);
3331 r
->fb_id
= fb
->base
.id
;
3332 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3333 mutex_unlock(&file_priv
->fbs_lock
);
3339 * drm_mode_rmfb - remove an FB from the configuration
3340 * @dev: drm device for the ioctl
3341 * @data: data pointer for the ioctl
3342 * @file_priv: drm file for the ioctl call
3344 * Remove the FB specified by the user.
3346 * Called by the user via ioctl.
3349 * Zero on success, negative errno on failure.
3351 int drm_mode_rmfb(struct drm_device
*dev
,
3352 void *data
, struct drm_file
*file_priv
)
3354 struct drm_framebuffer
*fb
= NULL
;
3355 struct drm_framebuffer
*fbl
= NULL
;
3356 uint32_t *id
= data
;
3359 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3362 mutex_lock(&file_priv
->fbs_lock
);
3363 mutex_lock(&dev
->mode_config
.fb_lock
);
3364 fb
= __drm_framebuffer_lookup(dev
, *id
);
3368 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3374 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3375 __drm_framebuffer_unregister(dev
, fb
);
3377 list_del_init(&fb
->filp_head
);
3378 mutex_unlock(&dev
->mode_config
.fb_lock
);
3379 mutex_unlock(&file_priv
->fbs_lock
);
3381 drm_framebuffer_remove(fb
);
3386 mutex_unlock(&dev
->mode_config
.fb_lock
);
3387 mutex_unlock(&file_priv
->fbs_lock
);
3393 * drm_mode_getfb - get FB info
3394 * @dev: drm device for the ioctl
3395 * @data: data pointer for the ioctl
3396 * @file_priv: drm file for the ioctl call
3398 * Lookup the FB given its ID and return info about it.
3400 * Called by the user via ioctl.
3403 * Zero on success, negative errno on failure.
3405 int drm_mode_getfb(struct drm_device
*dev
,
3406 void *data
, struct drm_file
*file_priv
)
3408 struct drm_mode_fb_cmd
*r
= data
;
3409 struct drm_framebuffer
*fb
;
3412 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3415 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3419 r
->height
= fb
->height
;
3420 r
->width
= fb
->width
;
3421 r
->depth
= fb
->depth
;
3422 r
->bpp
= fb
->bits_per_pixel
;
3423 r
->pitch
= fb
->pitches
[0];
3424 if (fb
->funcs
->create_handle
) {
3425 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3426 drm_is_control_client(file_priv
)) {
3427 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3430 /* GET_FB() is an unprivileged ioctl so we must not
3431 * return a buffer-handle to non-master processes! For
3432 * backwards-compatibility reasons, we cannot make
3433 * GET_FB() privileged, so just return an invalid handle
3434 * for non-masters. */
3442 drm_framebuffer_unreference(fb
);
3448 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3449 * @dev: drm device for the ioctl
3450 * @data: data pointer for the ioctl
3451 * @file_priv: drm file for the ioctl call
3453 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3454 * rectangle list. Generic userspace which does frontbuffer rendering must call
3455 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3456 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3458 * Modesetting drivers which always update the frontbuffer do not need to
3459 * implement the corresponding ->dirty framebuffer callback.
3461 * Called by the user via ioctl.
3464 * Zero on success, negative errno on failure.
3466 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3467 void *data
, struct drm_file
*file_priv
)
3469 struct drm_clip_rect __user
*clips_ptr
;
3470 struct drm_clip_rect
*clips
= NULL
;
3471 struct drm_mode_fb_dirty_cmd
*r
= data
;
3472 struct drm_framebuffer
*fb
;
3477 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3480 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3484 num_clips
= r
->num_clips
;
3485 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3487 if (!num_clips
!= !clips_ptr
) {
3492 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3494 /* If userspace annotates copy, clips must come in pairs */
3495 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3500 if (num_clips
&& clips_ptr
) {
3501 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3505 clips
= kcalloc(num_clips
, sizeof(*clips
), GFP_KERNEL
);
3511 ret
= copy_from_user(clips
, clips_ptr
,
3512 num_clips
* sizeof(*clips
));
3519 if (fb
->funcs
->dirty
) {
3520 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3529 drm_framebuffer_unreference(fb
);
3536 * drm_fb_release - remove and free the FBs on this file
3537 * @priv: drm file for the ioctl
3539 * Destroy all the FBs associated with @filp.
3541 * Called by the user via ioctl.
3544 * Zero on success, negative errno on failure.
3546 void drm_fb_release(struct drm_file
*priv
)
3548 struct drm_device
*dev
= priv
->minor
->dev
;
3549 struct drm_framebuffer
*fb
, *tfb
;
3552 * When the file gets released that means no one else can access the fb
3553 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3554 * avoid upsetting lockdep since the universal cursor code adds a
3555 * framebuffer while holding mutex locks.
3557 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3558 * locks is impossible here since no one else but this function can get
3561 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3563 mutex_lock(&dev
->mode_config
.fb_lock
);
3564 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3565 __drm_framebuffer_unregister(dev
, fb
);
3566 mutex_unlock(&dev
->mode_config
.fb_lock
);
3568 list_del_init(&fb
->filp_head
);
3570 /* This will also drop the fpriv->fbs reference. */
3571 drm_framebuffer_remove(fb
);
3576 * drm_property_create - create a new property type
3578 * @flags: flags specifying the property type
3579 * @name: name of the property
3580 * @num_values: number of pre-defined values
3582 * This creates a new generic drm property which can then be attached to a drm
3583 * object with drm_object_attach_property. The returned property object must be
3584 * freed with drm_property_destroy.
3586 * Note that the DRM core keeps a per-device list of properties and that, if
3587 * drm_mode_config_cleanup() is called, it will destroy all properties created
3591 * A pointer to the newly created property on success, NULL on failure.
3593 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3594 const char *name
, int num_values
)
3596 struct drm_property
*property
= NULL
;
3599 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3603 property
->dev
= dev
;
3606 property
->values
= kcalloc(num_values
, sizeof(uint64_t),
3608 if (!property
->values
)
3612 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3616 property
->flags
= flags
;
3617 property
->num_values
= num_values
;
3618 INIT_LIST_HEAD(&property
->enum_list
);
3621 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3622 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3625 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3627 WARN_ON(!drm_property_type_valid(property
));
3631 kfree(property
->values
);
3635 EXPORT_SYMBOL(drm_property_create
);
3638 * drm_property_create_enum - create a new enumeration property type
3640 * @flags: flags specifying the property type
3641 * @name: name of the property
3642 * @props: enumeration lists with property values
3643 * @num_values: number of pre-defined values
3645 * This creates a new generic drm property which can then be attached to a drm
3646 * object with drm_object_attach_property. The returned property object must be
3647 * freed with drm_property_destroy.
3649 * Userspace is only allowed to set one of the predefined values for enumeration
3653 * A pointer to the newly created property on success, NULL on failure.
3655 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3657 const struct drm_prop_enum_list
*props
,
3660 struct drm_property
*property
;
3663 flags
|= DRM_MODE_PROP_ENUM
;
3665 property
= drm_property_create(dev
, flags
, name
, num_values
);
3669 for (i
= 0; i
< num_values
; i
++) {
3670 ret
= drm_property_add_enum(property
, i
,
3674 drm_property_destroy(dev
, property
);
3681 EXPORT_SYMBOL(drm_property_create_enum
);
3684 * drm_property_create_bitmask - create a new bitmask property type
3686 * @flags: flags specifying the property type
3687 * @name: name of the property
3688 * @props: enumeration lists with property bitflags
3689 * @num_props: size of the @props array
3690 * @supported_bits: bitmask of all supported enumeration values
3692 * This creates a new bitmask drm property which can then be attached to a drm
3693 * object with drm_object_attach_property. The returned property object must be
3694 * freed with drm_property_destroy.
3696 * Compared to plain enumeration properties userspace is allowed to set any
3697 * or'ed together combination of the predefined property bitflag values
3700 * A pointer to the newly created property on success, NULL on failure.
3702 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3703 int flags
, const char *name
,
3704 const struct drm_prop_enum_list
*props
,
3706 uint64_t supported_bits
)
3708 struct drm_property
*property
;
3709 int i
, ret
, index
= 0;
3710 int num_values
= hweight64(supported_bits
);
3712 flags
|= DRM_MODE_PROP_BITMASK
;
3714 property
= drm_property_create(dev
, flags
, name
, num_values
);
3717 for (i
= 0; i
< num_props
; i
++) {
3718 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3721 if (WARN_ON(index
>= num_values
)) {
3722 drm_property_destroy(dev
, property
);
3726 ret
= drm_property_add_enum(property
, index
++,
3730 drm_property_destroy(dev
, property
);
3737 EXPORT_SYMBOL(drm_property_create_bitmask
);
3739 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3740 int flags
, const char *name
,
3741 uint64_t min
, uint64_t max
)
3743 struct drm_property
*property
;
3745 property
= drm_property_create(dev
, flags
, name
, 2);
3749 property
->values
[0] = min
;
3750 property
->values
[1] = max
;
3756 * drm_property_create_range - create a new unsigned ranged property type
3758 * @flags: flags specifying the property type
3759 * @name: name of the property
3760 * @min: minimum value of the property
3761 * @max: maximum value of the property
3763 * This creates a new generic drm property which can then be attached to a drm
3764 * object with drm_object_attach_property. The returned property object must be
3765 * freed with drm_property_destroy.
3767 * Userspace is allowed to set any unsigned integer value in the (min, max)
3771 * A pointer to the newly created property on success, NULL on failure.
3773 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3775 uint64_t min
, uint64_t max
)
3777 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3780 EXPORT_SYMBOL(drm_property_create_range
);
3783 * drm_property_create_signed_range - create a new signed ranged property type
3785 * @flags: flags specifying the property type
3786 * @name: name of the property
3787 * @min: minimum value of the property
3788 * @max: maximum value of the property
3790 * This creates a new generic drm property which can then be attached to a drm
3791 * object with drm_object_attach_property. The returned property object must be
3792 * freed with drm_property_destroy.
3794 * Userspace is allowed to set any signed integer value in the (min, max)
3798 * A pointer to the newly created property on success, NULL on failure.
3800 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3801 int flags
, const char *name
,
3802 int64_t min
, int64_t max
)
3804 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3805 name
, I642U64(min
), I642U64(max
));
3807 EXPORT_SYMBOL(drm_property_create_signed_range
);
3810 * drm_property_create_object - create a new object property type
3812 * @flags: flags specifying the property type
3813 * @name: name of the property
3814 * @type: object type from DRM_MODE_OBJECT_* defines
3816 * This creates a new generic drm property which can then be attached to a drm
3817 * object with drm_object_attach_property. The returned property object must be
3818 * freed with drm_property_destroy.
3820 * Userspace is only allowed to set this to any property value of the given
3821 * @type. Only useful for atomic properties, which is enforced.
3824 * A pointer to the newly created property on success, NULL on failure.
3826 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3827 int flags
, const char *name
, uint32_t type
)
3829 struct drm_property
*property
;
3831 flags
|= DRM_MODE_PROP_OBJECT
;
3833 if (WARN_ON(!(flags
& DRM_MODE_PROP_ATOMIC
)))
3836 property
= drm_property_create(dev
, flags
, name
, 1);
3840 property
->values
[0] = type
;
3844 EXPORT_SYMBOL(drm_property_create_object
);
3847 * drm_property_create_bool - create a new boolean property type
3849 * @flags: flags specifying the property type
3850 * @name: name of the property
3852 * This creates a new generic drm property which can then be attached to a drm
3853 * object with drm_object_attach_property. The returned property object must be
3854 * freed with drm_property_destroy.
3856 * This is implemented as a ranged property with only {0, 1} as valid values.
3859 * A pointer to the newly created property on success, NULL on failure.
3861 struct drm_property
*drm_property_create_bool(struct drm_device
*dev
, int flags
,
3864 return drm_property_create_range(dev
, flags
, name
, 0, 1);
3866 EXPORT_SYMBOL(drm_property_create_bool
);
3869 * drm_property_add_enum - add a possible value to an enumeration property
3870 * @property: enumeration property to change
3871 * @index: index of the new enumeration
3872 * @value: value of the new enumeration
3873 * @name: symbolic name of the new enumeration
3875 * This functions adds enumerations to a property.
3877 * It's use is deprecated, drivers should use one of the more specific helpers
3878 * to directly create the property with all enumerations already attached.
3881 * Zero on success, error code on failure.
3883 int drm_property_add_enum(struct drm_property
*property
, int index
,
3884 uint64_t value
, const char *name
)
3886 struct drm_property_enum
*prop_enum
;
3888 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3889 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3893 * Bitmask enum properties have the additional constraint of values
3896 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3900 if (!list_empty(&property
->enum_list
)) {
3901 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3902 if (prop_enum
->value
== value
) {
3903 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3904 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3910 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3914 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3915 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3916 prop_enum
->value
= value
;
3918 property
->values
[index
] = value
;
3919 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
3922 EXPORT_SYMBOL(drm_property_add_enum
);
3925 * drm_property_destroy - destroy a drm property
3927 * @property: property to destry
3929 * This function frees a property including any attached resources like
3930 * enumeration values.
3932 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3934 struct drm_property_enum
*prop_enum
, *pt
;
3936 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
3937 list_del(&prop_enum
->head
);
3941 if (property
->num_values
)
3942 kfree(property
->values
);
3943 drm_mode_object_put(dev
, &property
->base
);
3944 list_del(&property
->head
);
3947 EXPORT_SYMBOL(drm_property_destroy
);
3950 * drm_object_attach_property - attach a property to a modeset object
3951 * @obj: drm modeset object
3952 * @property: property to attach
3953 * @init_val: initial value of the property
3955 * This attaches the given property to the modeset object with the given initial
3956 * value. Currently this function cannot fail since the properties are stored in
3957 * a statically sized array.
3959 void drm_object_attach_property(struct drm_mode_object
*obj
,
3960 struct drm_property
*property
,
3963 int count
= obj
->properties
->count
;
3965 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3966 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3967 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3968 "you see this message on the same object type.\n",
3973 obj
->properties
->properties
[count
] = property
;
3974 obj
->properties
->values
[count
] = init_val
;
3975 obj
->properties
->count
++;
3976 if (property
->flags
& DRM_MODE_PROP_ATOMIC
)
3977 obj
->properties
->atomic_count
++;
3979 EXPORT_SYMBOL(drm_object_attach_property
);
3982 * drm_object_property_set_value - set the value of a property
3983 * @obj: drm mode object to set property value for
3984 * @property: property to set
3985 * @val: value the property should be set to
3987 * This functions sets a given property on a given object. This function only
3988 * changes the software state of the property, it does not call into the
3989 * driver's ->set_property callback.
3992 * Zero on success, error code on failure.
3994 int drm_object_property_set_value(struct drm_mode_object
*obj
,
3995 struct drm_property
*property
, uint64_t val
)
3999 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4000 if (obj
->properties
->properties
[i
] == property
) {
4001 obj
->properties
->values
[i
] = val
;
4008 EXPORT_SYMBOL(drm_object_property_set_value
);
4011 * drm_object_property_get_value - retrieve the value of a property
4012 * @obj: drm mode object to get property value from
4013 * @property: property to retrieve
4014 * @val: storage for the property value
4016 * This function retrieves the softare state of the given property for the given
4017 * property. Since there is no driver callback to retrieve the current property
4018 * value this might be out of sync with the hardware, depending upon the driver
4022 * Zero on success, error code on failure.
4024 int drm_object_property_get_value(struct drm_mode_object
*obj
,
4025 struct drm_property
*property
, uint64_t *val
)
4029 /* read-only properties bypass atomic mechanism and still store
4030 * their value in obj->properties->values[].. mostly to avoid
4031 * having to deal w/ EDID and similar props in atomic paths:
4033 if (drm_core_check_feature(property
->dev
, DRIVER_ATOMIC
) &&
4034 !(property
->flags
& DRM_MODE_PROP_IMMUTABLE
))
4035 return drm_atomic_get_property(obj
, property
, val
);
4037 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4038 if (obj
->properties
->properties
[i
] == property
) {
4039 *val
= obj
->properties
->values
[i
];
4046 EXPORT_SYMBOL(drm_object_property_get_value
);
4049 * drm_mode_getproperty_ioctl - get the property metadata
4052 * @file_priv: DRM file info
4054 * This function retrieves the metadata for a given property, like the different
4055 * possible values for an enum property or the limits for a range property.
4057 * Blob properties are special
4059 * Called by the user via ioctl.
4062 * Zero on success, negative errno on failure.
4064 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
4065 void *data
, struct drm_file
*file_priv
)
4067 struct drm_mode_get_property
*out_resp
= data
;
4068 struct drm_property
*property
;
4070 int value_count
= 0;
4073 struct drm_property_enum
*prop_enum
;
4074 struct drm_mode_property_enum __user
*enum_ptr
;
4075 uint64_t __user
*values_ptr
;
4077 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4080 drm_modeset_lock_all(dev
);
4081 property
= drm_property_find(dev
, out_resp
->prop_id
);
4087 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4088 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4089 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
4093 value_count
= property
->num_values
;
4095 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
4096 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
4097 out_resp
->flags
= property
->flags
;
4099 if ((out_resp
->count_values
>= value_count
) && value_count
) {
4100 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
4101 for (i
= 0; i
< value_count
; i
++) {
4102 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
4108 out_resp
->count_values
= value_count
;
4110 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4111 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4112 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
4114 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
4115 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
4117 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
4122 if (copy_to_user(&enum_ptr
[copied
].name
,
4123 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
4130 out_resp
->count_enum_blobs
= enum_count
;
4134 * NOTE: The idea seems to have been to use this to read all the blob
4135 * property values. But nothing ever added them to the corresponding
4136 * list, userspace always used the special-purpose get_blob ioctl to
4137 * read the value for a blob property. It also doesn't make a lot of
4138 * sense to return values here when everything else is just metadata for
4139 * the property itself.
4141 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4142 out_resp
->count_enum_blobs
= 0;
4144 drm_modeset_unlock_all(dev
);
4149 * drm_property_create_blob - Create new blob property
4151 * Creates a new blob property for a specified DRM device, optionally
4154 * @dev: DRM device to create property for
4155 * @length: Length to allocate for blob data
4156 * @data: If specified, copies data into blob
4159 * New blob property with a single reference on success, or an ERR_PTR
4162 struct drm_property_blob
*
4163 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
4166 struct drm_property_blob
*blob
;
4170 return ERR_PTR(-EINVAL
);
4172 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
4174 return ERR_PTR(-ENOMEM
);
4176 /* This must be explicitly initialised, so we can safely call list_del
4177 * on it in the removal handler, even if it isn't in a file list. */
4178 INIT_LIST_HEAD(&blob
->head_file
);
4179 blob
->length
= length
;
4183 memcpy(blob
->data
, data
, length
);
4185 mutex_lock(&dev
->mode_config
.blob_lock
);
4187 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
4190 mutex_unlock(&dev
->mode_config
.blob_lock
);
4191 return ERR_PTR(-EINVAL
);
4194 kref_init(&blob
->refcount
);
4196 list_add_tail(&blob
->head_global
,
4197 &dev
->mode_config
.property_blob_list
);
4199 mutex_unlock(&dev
->mode_config
.blob_lock
);
4203 EXPORT_SYMBOL(drm_property_create_blob
);
4206 * drm_property_free_blob - Blob property destructor
4208 * Internal free function for blob properties; must not be used directly.
4212 static void drm_property_free_blob(struct kref
*kref
)
4214 struct drm_property_blob
*blob
=
4215 container_of(kref
, struct drm_property_blob
, refcount
);
4217 WARN_ON(!mutex_is_locked(&blob
->dev
->mode_config
.blob_lock
));
4219 list_del(&blob
->head_global
);
4220 list_del(&blob
->head_file
);
4221 drm_mode_object_put(blob
->dev
, &blob
->base
);
4227 * drm_property_unreference_blob - Unreference a blob property
4229 * Drop a reference on a blob property. May free the object.
4231 * @blob: Pointer to blob property
4233 void drm_property_unreference_blob(struct drm_property_blob
*blob
)
4235 struct drm_device
*dev
;
4242 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4244 if (kref_put_mutex(&blob
->refcount
, drm_property_free_blob
,
4245 &dev
->mode_config
.blob_lock
))
4246 mutex_unlock(&dev
->mode_config
.blob_lock
);
4248 might_lock(&dev
->mode_config
.blob_lock
);
4251 EXPORT_SYMBOL(drm_property_unreference_blob
);
4254 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4256 * Drop a reference on a blob property. May free the object. This must be
4257 * called with blob_lock held.
4259 * @blob: Pointer to blob property
4261 static void drm_property_unreference_blob_locked(struct drm_property_blob
*blob
)
4266 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4268 kref_put(&blob
->refcount
, drm_property_free_blob
);
4272 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4274 * @file_priv: destroy all blobs owned by this file handle
4276 void drm_property_destroy_user_blobs(struct drm_device
*dev
,
4277 struct drm_file
*file_priv
)
4279 struct drm_property_blob
*blob
, *bt
;
4281 mutex_lock(&dev
->mode_config
.blob_lock
);
4283 list_for_each_entry_safe(blob
, bt
, &file_priv
->blobs
, head_file
) {
4284 list_del_init(&blob
->head_file
);
4285 drm_property_unreference_blob_locked(blob
);
4288 mutex_unlock(&dev
->mode_config
.blob_lock
);
4292 * drm_property_reference_blob - Take a reference on an existing property
4294 * Take a new reference on an existing blob property.
4296 * @blob: Pointer to blob property
4298 struct drm_property_blob
*drm_property_reference_blob(struct drm_property_blob
*blob
)
4300 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4301 kref_get(&blob
->refcount
);
4304 EXPORT_SYMBOL(drm_property_reference_blob
);
4307 * Like drm_property_lookup_blob, but does not return an additional reference.
4308 * Must be called with blob_lock held.
4310 static struct drm_property_blob
*__drm_property_lookup_blob(struct drm_device
*dev
,
4313 struct drm_mode_object
*obj
= NULL
;
4314 struct drm_property_blob
*blob
;
4316 WARN_ON(!mutex_is_locked(&dev
->mode_config
.blob_lock
));
4318 mutex_lock(&dev
->mode_config
.idr_mutex
);
4319 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
4320 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_BLOB
) || (obj
->id
!= id
))
4323 blob
= obj_to_blob(obj
);
4324 mutex_unlock(&dev
->mode_config
.idr_mutex
);
4330 * drm_property_lookup_blob - look up a blob property and take a reference
4332 * @id: id of the blob property
4334 * If successful, this takes an additional reference to the blob property.
4335 * callers need to make sure to eventually unreference the returned property
4336 * again, using @drm_property_unreference_blob.
4338 struct drm_property_blob
*drm_property_lookup_blob(struct drm_device
*dev
,
4341 struct drm_property_blob
*blob
;
4343 mutex_lock(&dev
->mode_config
.blob_lock
);
4344 blob
= __drm_property_lookup_blob(dev
, id
);
4346 if (!kref_get_unless_zero(&blob
->refcount
))
4349 mutex_unlock(&dev
->mode_config
.blob_lock
);
4353 EXPORT_SYMBOL(drm_property_lookup_blob
);
4356 * drm_property_replace_global_blob - atomically replace existing blob property
4358 * @replace: location of blob property pointer to be replaced
4359 * @length: length of data for new blob, or 0 for no data
4360 * @data: content for new blob, or NULL for no data
4361 * @obj_holds_id: optional object for property holding blob ID
4362 * @prop_holds_id: optional property holding blob ID
4363 * @return 0 on success or error on failure
4365 * This function will atomically replace a global property in the blob list,
4366 * optionally updating a property which holds the ID of that property. It is
4367 * guaranteed to be atomic: no caller will be allowed to see intermediate
4368 * results, and either the entire operation will succeed and clean up the
4369 * previous property, or it will fail and the state will be unchanged.
4371 * If length is 0 or data is NULL, no new blob will be created, and the holding
4372 * property, if specified, will be set to 0.
4374 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4375 * by holding the relevant modesetting object lock for its parent.
4377 * For example, a drm_connector has a 'PATH' property, which contains the ID
4378 * of a blob property with the value of the MST path information. Calling this
4379 * function with replace pointing to the connector's path_blob_ptr, length and
4380 * data set for the new path information, obj_holds_id set to the connector's
4381 * base object, and prop_holds_id set to the path property name, will perform
4382 * a completely atomic update. The access to path_blob_ptr is protected by the
4383 * caller holding a lock on the connector.
4385 static int drm_property_replace_global_blob(struct drm_device
*dev
,
4386 struct drm_property_blob
**replace
,
4389 struct drm_mode_object
*obj_holds_id
,
4390 struct drm_property
*prop_holds_id
)
4392 struct drm_property_blob
*new_blob
= NULL
;
4393 struct drm_property_blob
*old_blob
= NULL
;
4396 WARN_ON(replace
== NULL
);
4398 old_blob
= *replace
;
4400 if (length
&& data
) {
4401 new_blob
= drm_property_create_blob(dev
, length
, data
);
4402 if (IS_ERR(new_blob
))
4403 return PTR_ERR(new_blob
);
4406 /* This does not need to be synchronised with blob_lock, as the
4407 * get_properties ioctl locks all modesetting objects, and
4408 * obj_holds_id must be locked before calling here, so we cannot
4409 * have its value out of sync with the list membership modified
4410 * below under blob_lock. */
4412 ret
= drm_object_property_set_value(obj_holds_id
,
4415 new_blob
->base
.id
: 0);
4421 drm_property_unreference_blob(old_blob
);
4423 *replace
= new_blob
;
4428 drm_property_unreference_blob(new_blob
);
4433 * drm_mode_getblob_ioctl - get the contents of a blob property value
4436 * @file_priv: DRM file info
4438 * This function retrieves the contents of a blob property. The value stored in
4439 * an object's blob property is just a normal modeset object id.
4441 * Called by the user via ioctl.
4444 * Zero on success, negative errno on failure.
4446 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
4447 void *data
, struct drm_file
*file_priv
)
4449 struct drm_mode_get_blob
*out_resp
= data
;
4450 struct drm_property_blob
*blob
;
4452 void __user
*blob_ptr
;
4454 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4457 drm_modeset_lock_all(dev
);
4458 mutex_lock(&dev
->mode_config
.blob_lock
);
4459 blob
= __drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4465 if (out_resp
->length
== blob
->length
) {
4466 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4467 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)) {
4472 out_resp
->length
= blob
->length
;
4475 mutex_unlock(&dev
->mode_config
.blob_lock
);
4476 drm_modeset_unlock_all(dev
);
4481 * drm_mode_createblob_ioctl - create a new blob property
4484 * @file_priv: DRM file info
4486 * This function creates a new blob property with user-defined values. In order
4487 * to give us sensible validation and checking when creating, rather than at
4488 * every potential use, we also require a type to be provided upfront.
4490 * Called by the user via ioctl.
4493 * Zero on success, negative errno on failure.
4495 int drm_mode_createblob_ioctl(struct drm_device
*dev
,
4496 void *data
, struct drm_file
*file_priv
)
4498 struct drm_mode_create_blob
*out_resp
= data
;
4499 struct drm_property_blob
*blob
;
4500 void __user
*blob_ptr
;
4503 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4506 blob
= drm_property_create_blob(dev
, out_resp
->length
, NULL
);
4508 return PTR_ERR(blob
);
4510 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4511 if (copy_from_user(blob
->data
, blob_ptr
, out_resp
->length
)) {
4516 /* Dropping the lock between create_blob and our access here is safe
4517 * as only the same file_priv can remove the blob; at this point, it is
4518 * not associated with any file_priv. */
4519 mutex_lock(&dev
->mode_config
.blob_lock
);
4520 out_resp
->blob_id
= blob
->base
.id
;
4521 list_add_tail(&file_priv
->blobs
, &blob
->head_file
);
4522 mutex_unlock(&dev
->mode_config
.blob_lock
);
4527 drm_property_unreference_blob(blob
);
4532 * drm_mode_destroyblob_ioctl - destroy a user blob property
4535 * @file_priv: DRM file info
4537 * Destroy an existing user-defined blob property.
4539 * Called by the user via ioctl.
4542 * Zero on success, negative errno on failure.
4544 int drm_mode_destroyblob_ioctl(struct drm_device
*dev
,
4545 void *data
, struct drm_file
*file_priv
)
4547 struct drm_mode_destroy_blob
*out_resp
= data
;
4548 struct drm_property_blob
*blob
= NULL
, *bt
;
4552 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4555 mutex_lock(&dev
->mode_config
.blob_lock
);
4556 blob
= __drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4562 /* Ensure the property was actually created by this user. */
4563 list_for_each_entry(bt
, &file_priv
->blobs
, head_file
) {
4575 /* We must drop head_file here, because we may not be the last
4576 * reference on the blob. */
4577 list_del_init(&blob
->head_file
);
4578 drm_property_unreference_blob_locked(blob
);
4579 mutex_unlock(&dev
->mode_config
.blob_lock
);
4584 mutex_unlock(&dev
->mode_config
.blob_lock
);
4589 * drm_mode_connector_set_path_property - set tile property on connector
4590 * @connector: connector to set property on.
4591 * @path: path to use for property; must not be NULL.
4593 * This creates a property to expose to userspace to specify a
4594 * connector path. This is mainly used for DisplayPort MST where
4595 * connectors have a topology and we want to allow userspace to give
4596 * them more meaningful names.
4599 * Zero on success, negative errno on failure.
4601 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4604 struct drm_device
*dev
= connector
->dev
;
4607 ret
= drm_property_replace_global_blob(dev
,
4608 &connector
->path_blob_ptr
,
4612 dev
->mode_config
.path_property
);
4615 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4618 * drm_mode_connector_set_tile_property - set tile property on connector
4619 * @connector: connector to set property on.
4621 * This looks up the tile information for a connector, and creates a
4622 * property for userspace to parse if it exists. The property is of
4623 * the form of 8 integers using ':' as a separator.
4626 * Zero on success, errno on failure.
4628 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
)
4630 struct drm_device
*dev
= connector
->dev
;
4634 if (!connector
->has_tile
) {
4635 ret
= drm_property_replace_global_blob(dev
,
4636 &connector
->tile_blob_ptr
,
4640 dev
->mode_config
.tile_property
);
4644 snprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4645 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
4646 connector
->num_h_tile
, connector
->num_v_tile
,
4647 connector
->tile_h_loc
, connector
->tile_v_loc
,
4648 connector
->tile_h_size
, connector
->tile_v_size
);
4650 ret
= drm_property_replace_global_blob(dev
,
4651 &connector
->tile_blob_ptr
,
4655 dev
->mode_config
.tile_property
);
4658 EXPORT_SYMBOL(drm_mode_connector_set_tile_property
);
4661 * drm_mode_connector_update_edid_property - update the edid property of a connector
4662 * @connector: drm connector
4663 * @edid: new value of the edid property
4665 * This function creates a new blob modeset object and assigns its id to the
4666 * connector's edid property.
4669 * Zero on success, negative errno on failure.
4671 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4672 const struct edid
*edid
)
4674 struct drm_device
*dev
= connector
->dev
;
4678 /* ignore requests to set edid when overridden */
4679 if (connector
->override_edid
)
4683 size
= EDID_LENGTH
+ (1 + edid
->extensions
);
4685 ret
= drm_property_replace_global_blob(dev
,
4686 &connector
->edid_blob_ptr
,
4690 dev
->mode_config
.edid_property
);
4693 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4695 /* Some properties could refer to dynamic refcnt'd objects, or things that
4696 * need special locking to handle lifetime issues (ie. to ensure the prop
4697 * value doesn't become invalid part way through the property update due to
4698 * race). The value returned by reference via 'obj' should be passed back
4699 * to drm_property_change_valid_put() after the property is set (and the
4700 * object to which the property is attached has a chance to take it's own
4703 bool drm_property_change_valid_get(struct drm_property
*property
,
4704 uint64_t value
, struct drm_mode_object
**ref
)
4708 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4713 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4714 if (value
< property
->values
[0] || value
> property
->values
[1])
4717 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4718 int64_t svalue
= U642I64(value
);
4720 if (svalue
< U642I64(property
->values
[0]) ||
4721 svalue
> U642I64(property
->values
[1]))
4724 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4725 uint64_t valid_mask
= 0;
4727 for (i
= 0; i
< property
->num_values
; i
++)
4728 valid_mask
|= (1ULL << property
->values
[i
]);
4729 return !(value
& ~valid_mask
);
4730 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4731 struct drm_property_blob
*blob
;
4736 blob
= drm_property_lookup_blob(property
->dev
, value
);
4743 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4744 /* a zero value for an object property translates to null: */
4748 /* handle refcnt'd objects specially: */
4749 if (property
->values
[0] == DRM_MODE_OBJECT_FB
) {
4750 struct drm_framebuffer
*fb
;
4751 fb
= drm_framebuffer_lookup(property
->dev
, value
);
4759 return _object_find(property
->dev
, value
, property
->values
[0]) != NULL
;
4763 for (i
= 0; i
< property
->num_values
; i
++)
4764 if (property
->values
[i
] == value
)
4769 void drm_property_change_valid_put(struct drm_property
*property
,
4770 struct drm_mode_object
*ref
)
4775 if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4776 if (property
->values
[0] == DRM_MODE_OBJECT_FB
)
4777 drm_framebuffer_unreference(obj_to_fb(ref
));
4782 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4785 * @file_priv: DRM file info
4787 * This function sets the current value for a connectors's property. It also
4788 * calls into a driver's ->set_property callback to update the hardware state
4790 * Called by the user via ioctl.
4793 * Zero on success, negative errno on failure.
4795 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4796 void *data
, struct drm_file
*file_priv
)
4798 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4799 struct drm_mode_obj_set_property obj_set_prop
= {
4800 .value
= conn_set_prop
->value
,
4801 .prop_id
= conn_set_prop
->prop_id
,
4802 .obj_id
= conn_set_prop
->connector_id
,
4803 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4806 /* It does all the locking and checking we need */
4807 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4810 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4811 struct drm_property
*property
,
4815 struct drm_connector
*connector
= obj_to_connector(obj
);
4817 /* Do DPMS ourselves */
4818 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4819 if (connector
->funcs
->dpms
)
4820 (*connector
->funcs
->dpms
)(connector
, (int)value
);
4822 } else if (connector
->funcs
->set_property
)
4823 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4825 /* store the property value if successful */
4827 drm_object_property_set_value(&connector
->base
, property
, value
);
4831 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4832 struct drm_property
*property
,
4836 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4838 if (crtc
->funcs
->set_property
)
4839 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4841 drm_object_property_set_value(obj
, property
, value
);
4847 * drm_mode_plane_set_obj_prop - set the value of a property
4848 * @plane: drm plane object to set property value for
4849 * @property: property to set
4850 * @value: value the property should be set to
4852 * This functions sets a given property on a given plane object. This function
4853 * calls the driver's ->set_property callback and changes the software state of
4854 * the property if the callback succeeds.
4857 * Zero on success, error code on failure.
4859 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4860 struct drm_property
*property
,
4864 struct drm_mode_object
*obj
= &plane
->base
;
4866 if (plane
->funcs
->set_property
)
4867 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4869 drm_object_property_set_value(obj
, property
, value
);
4873 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4876 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4879 * @file_priv: DRM file info
4881 * This function retrieves the current value for an object's property. Compared
4882 * to the connector specific ioctl this one is extended to also work on crtc and
4885 * Called by the user via ioctl.
4888 * Zero on success, negative errno on failure.
4890 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4891 struct drm_file
*file_priv
)
4893 struct drm_mode_obj_get_properties
*arg
= data
;
4894 struct drm_mode_object
*obj
;
4897 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4900 drm_modeset_lock_all(dev
);
4902 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4907 if (!obj
->properties
) {
4912 ret
= get_properties(obj
, file_priv
->atomic
,
4913 (uint32_t __user
*)(unsigned long)(arg
->props_ptr
),
4914 (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
),
4918 drm_modeset_unlock_all(dev
);
4923 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4926 * @file_priv: DRM file info
4928 * This function sets the current value for an object's property. It also calls
4929 * into a driver's ->set_property callback to update the hardware state.
4930 * Compared to the connector specific ioctl this one is extended to also work on
4931 * crtc and plane objects.
4933 * Called by the user via ioctl.
4936 * Zero on success, negative errno on failure.
4938 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4939 struct drm_file
*file_priv
)
4941 struct drm_mode_obj_set_property
*arg
= data
;
4942 struct drm_mode_object
*arg_obj
;
4943 struct drm_mode_object
*prop_obj
;
4944 struct drm_property
*property
;
4945 int i
, ret
= -EINVAL
;
4946 struct drm_mode_object
*ref
;
4948 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4951 drm_modeset_lock_all(dev
);
4953 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4958 if (!arg_obj
->properties
)
4961 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4962 if (arg_obj
->properties
->properties
[i
]->base
.id
== arg
->prop_id
)
4965 if (i
== arg_obj
->properties
->count
)
4968 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
4969 DRM_MODE_OBJECT_PROPERTY
);
4974 property
= obj_to_property(prop_obj
);
4976 if (!drm_property_change_valid_get(property
, arg
->value
, &ref
))
4979 switch (arg_obj
->type
) {
4980 case DRM_MODE_OBJECT_CONNECTOR
:
4981 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
4984 case DRM_MODE_OBJECT_CRTC
:
4985 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
4987 case DRM_MODE_OBJECT_PLANE
:
4988 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
4989 property
, arg
->value
);
4993 drm_property_change_valid_put(property
, ref
);
4996 drm_modeset_unlock_all(dev
);
5001 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5002 * @connector: connector to attach
5003 * @encoder: encoder to attach @connector to
5005 * This function links up a connector to an encoder. Note that the routing
5006 * restrictions between encoders and crtcs are exposed to userspace through the
5007 * possible_clones and possible_crtcs bitmasks.
5010 * Zero on success, negative errno on failure.
5012 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
5013 struct drm_encoder
*encoder
)
5017 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
5018 if (connector
->encoder_ids
[i
] == 0) {
5019 connector
->encoder_ids
[i
] = encoder
->base
.id
;
5025 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
5028 * drm_mode_crtc_set_gamma_size - set the gamma table size
5029 * @crtc: CRTC to set the gamma table size for
5030 * @gamma_size: size of the gamma table
5032 * Drivers which support gamma tables should set this to the supported gamma
5033 * table size when initializing the CRTC. Currently the drm core only supports a
5034 * fixed gamma table size.
5037 * Zero on success, negative errno on failure.
5039 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
5042 crtc
->gamma_size
= gamma_size
;
5044 crtc
->gamma_store
= kcalloc(gamma_size
, sizeof(uint16_t) * 3,
5046 if (!crtc
->gamma_store
) {
5047 crtc
->gamma_size
= 0;
5053 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
5056 * drm_mode_gamma_set_ioctl - set the gamma table
5059 * @file_priv: DRM file info
5061 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5062 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5064 * Called by the user via ioctl.
5067 * Zero on success, negative errno on failure.
5069 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
5070 void *data
, struct drm_file
*file_priv
)
5072 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5073 struct drm_crtc
*crtc
;
5074 void *r_base
, *g_base
, *b_base
;
5078 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5081 drm_modeset_lock_all(dev
);
5082 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5088 if (crtc
->funcs
->gamma_set
== NULL
) {
5093 /* memcpy into gamma store */
5094 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5099 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5100 r_base
= crtc
->gamma_store
;
5101 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
5106 g_base
= r_base
+ size
;
5107 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
5112 b_base
= g_base
+ size
;
5113 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
5118 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
5121 drm_modeset_unlock_all(dev
);
5127 * drm_mode_gamma_get_ioctl - get the gamma table
5130 * @file_priv: DRM file info
5132 * Copy the current gamma table into the storage provided. This also provides
5133 * the gamma table size the driver expects, which can be used to size the
5134 * allocated storage.
5136 * Called by the user via ioctl.
5139 * Zero on success, negative errno on failure.
5141 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
5142 void *data
, struct drm_file
*file_priv
)
5144 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5145 struct drm_crtc
*crtc
;
5146 void *r_base
, *g_base
, *b_base
;
5150 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5153 drm_modeset_lock_all(dev
);
5154 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5160 /* memcpy into gamma store */
5161 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5166 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5167 r_base
= crtc
->gamma_store
;
5168 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
5173 g_base
= r_base
+ size
;
5174 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
5179 b_base
= g_base
+ size
;
5180 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
5185 drm_modeset_unlock_all(dev
);
5190 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5193 * @file_priv: DRM file info
5195 * This schedules an asynchronous update on a given CRTC, called page flip.
5196 * Optionally a drm event is generated to signal the completion of the event.
5197 * Generic drivers cannot assume that a pageflip with changed framebuffer
5198 * properties (including driver specific metadata like tiling layout) will work,
5199 * but some drivers support e.g. pixel format changes through the pageflip
5202 * Called by the user via ioctl.
5205 * Zero on success, negative errno on failure.
5207 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
5208 void *data
, struct drm_file
*file_priv
)
5210 struct drm_mode_crtc_page_flip
*page_flip
= data
;
5211 struct drm_crtc
*crtc
;
5212 struct drm_framebuffer
*fb
= NULL
;
5213 struct drm_pending_vblank_event
*e
= NULL
;
5214 unsigned long flags
;
5217 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
5218 page_flip
->reserved
!= 0)
5221 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
5224 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
5228 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
5229 if (crtc
->primary
->fb
== NULL
) {
5230 /* The framebuffer is currently unbound, presumably
5231 * due to a hotplug event, that userspace has not
5238 if (crtc
->funcs
->page_flip
== NULL
)
5241 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
5247 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
5251 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
5252 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5257 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5259 spin_lock_irqsave(&dev
->event_lock
, flags
);
5260 if (file_priv
->event_space
< sizeof(e
->event
)) {
5261 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5264 file_priv
->event_space
-= sizeof(e
->event
);
5265 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5267 e
= kzalloc(sizeof(*e
), GFP_KERNEL
);
5269 spin_lock_irqsave(&dev
->event_lock
, flags
);
5270 file_priv
->event_space
+= sizeof(e
->event
);
5271 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5275 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
5276 e
->event
.base
.length
= sizeof(e
->event
);
5277 e
->event
.user_data
= page_flip
->user_data
;
5278 e
->base
.event
= &e
->event
.base
;
5279 e
->base
.file_priv
= file_priv
;
5281 (void (*) (struct drm_pending_event
*)) kfree
;
5284 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
5285 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
5287 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5288 spin_lock_irqsave(&dev
->event_lock
, flags
);
5289 file_priv
->event_space
+= sizeof(e
->event
);
5290 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5293 /* Keep the old fb, don't unref it. */
5294 crtc
->primary
->old_fb
= NULL
;
5297 * Warn if the driver hasn't properly updated the crtc->fb
5298 * field to reflect that the new framebuffer is now used.
5299 * Failing to do so will screw with the reference counting
5302 WARN_ON(crtc
->primary
->fb
!= fb
);
5303 /* Unref only the old framebuffer. */
5309 drm_framebuffer_unreference(fb
);
5310 if (crtc
->primary
->old_fb
)
5311 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
5312 crtc
->primary
->old_fb
= NULL
;
5313 drm_modeset_unlock_crtc(crtc
);
5319 * drm_mode_config_reset - call ->reset callbacks
5322 * This functions calls all the crtc's, encoder's and connector's ->reset
5323 * callback. Drivers can use this in e.g. their driver load or resume code to
5324 * reset hardware and software state.
5326 void drm_mode_config_reset(struct drm_device
*dev
)
5328 struct drm_crtc
*crtc
;
5329 struct drm_plane
*plane
;
5330 struct drm_encoder
*encoder
;
5331 struct drm_connector
*connector
;
5333 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
)
5334 if (plane
->funcs
->reset
)
5335 plane
->funcs
->reset(plane
);
5337 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
5338 if (crtc
->funcs
->reset
)
5339 crtc
->funcs
->reset(crtc
);
5341 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
5342 if (encoder
->funcs
->reset
)
5343 encoder
->funcs
->reset(encoder
);
5345 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
5346 connector
->status
= connector_status_unknown
;
5348 if (connector
->funcs
->reset
)
5349 connector
->funcs
->reset(connector
);
5352 EXPORT_SYMBOL(drm_mode_config_reset
);
5355 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5358 * @file_priv: DRM file info
5360 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5361 * TTM or something else entirely) and returns the resulting buffer handle. This
5362 * handle can then be wrapped up into a framebuffer modeset object.
5364 * Note that userspace is not allowed to use such objects for render
5365 * acceleration - drivers must create their own private ioctls for such a use
5368 * Called by the user via ioctl.
5371 * Zero on success, negative errno on failure.
5373 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
5374 void *data
, struct drm_file
*file_priv
)
5376 struct drm_mode_create_dumb
*args
= data
;
5377 u32 cpp
, stride
, size
;
5379 if (!dev
->driver
->dumb_create
)
5381 if (!args
->width
|| !args
->height
|| !args
->bpp
)
5384 /* overflow checks for 32bit size calculations */
5385 /* NOTE: DIV_ROUND_UP() can overflow */
5386 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
5387 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
5389 stride
= cpp
* args
->width
;
5390 if (args
->height
> 0xffffffffU
/ stride
)
5393 /* test for wrap-around */
5394 size
= args
->height
* stride
;
5395 if (PAGE_ALIGN(size
) == 0)
5399 * handle, pitch and size are output parameters. Zero them out to
5400 * prevent drivers from accidentally using uninitialized data. Since
5401 * not all existing userspace is clearing these fields properly we
5402 * cannot reject IOCTL with garbage in them.
5408 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
5412 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5415 * @file_priv: DRM file info
5417 * Allocate an offset in the drm device node's address space to be able to
5418 * memory map a dumb buffer.
5420 * Called by the user via ioctl.
5423 * Zero on success, negative errno on failure.
5425 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
5426 void *data
, struct drm_file
*file_priv
)
5428 struct drm_mode_map_dumb
*args
= data
;
5430 /* call driver ioctl to get mmap offset */
5431 if (!dev
->driver
->dumb_map_offset
)
5434 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
5438 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5441 * @file_priv: DRM file info
5443 * This destroys the userspace handle for the given dumb backing storage buffer.
5444 * Since buffer objects must be reference counted in the kernel a buffer object
5445 * won't be immediately freed if a framebuffer modeset object still uses it.
5447 * Called by the user via ioctl.
5450 * Zero on success, negative errno on failure.
5452 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
5453 void *data
, struct drm_file
*file_priv
)
5455 struct drm_mode_destroy_dumb
*args
= data
;
5457 if (!dev
->driver
->dumb_destroy
)
5460 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
5464 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5465 * @format: pixel format (DRM_FORMAT_*)
5466 * @depth: storage for the depth value
5467 * @bpp: storage for the bpp value
5469 * This only supports RGB formats here for compat with code that doesn't use
5470 * pixel formats directly yet.
5472 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
5477 case DRM_FORMAT_RGB332
:
5478 case DRM_FORMAT_BGR233
:
5482 case DRM_FORMAT_XRGB1555
:
5483 case DRM_FORMAT_XBGR1555
:
5484 case DRM_FORMAT_RGBX5551
:
5485 case DRM_FORMAT_BGRX5551
:
5486 case DRM_FORMAT_ARGB1555
:
5487 case DRM_FORMAT_ABGR1555
:
5488 case DRM_FORMAT_RGBA5551
:
5489 case DRM_FORMAT_BGRA5551
:
5493 case DRM_FORMAT_RGB565
:
5494 case DRM_FORMAT_BGR565
:
5498 case DRM_FORMAT_RGB888
:
5499 case DRM_FORMAT_BGR888
:
5503 case DRM_FORMAT_XRGB8888
:
5504 case DRM_FORMAT_XBGR8888
:
5505 case DRM_FORMAT_RGBX8888
:
5506 case DRM_FORMAT_BGRX8888
:
5510 case DRM_FORMAT_XRGB2101010
:
5511 case DRM_FORMAT_XBGR2101010
:
5512 case DRM_FORMAT_RGBX1010102
:
5513 case DRM_FORMAT_BGRX1010102
:
5514 case DRM_FORMAT_ARGB2101010
:
5515 case DRM_FORMAT_ABGR2101010
:
5516 case DRM_FORMAT_RGBA1010102
:
5517 case DRM_FORMAT_BGRA1010102
:
5521 case DRM_FORMAT_ARGB8888
:
5522 case DRM_FORMAT_ABGR8888
:
5523 case DRM_FORMAT_RGBA8888
:
5524 case DRM_FORMAT_BGRA8888
:
5529 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5530 drm_get_format_name(format
));
5536 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
5539 * drm_format_num_planes - get the number of planes for format
5540 * @format: pixel format (DRM_FORMAT_*)
5543 * The number of planes used by the specified pixel format.
5545 int drm_format_num_planes(uint32_t format
)
5548 case DRM_FORMAT_YUV410
:
5549 case DRM_FORMAT_YVU410
:
5550 case DRM_FORMAT_YUV411
:
5551 case DRM_FORMAT_YVU411
:
5552 case DRM_FORMAT_YUV420
:
5553 case DRM_FORMAT_YVU420
:
5554 case DRM_FORMAT_YUV422
:
5555 case DRM_FORMAT_YVU422
:
5556 case DRM_FORMAT_YUV444
:
5557 case DRM_FORMAT_YVU444
:
5559 case DRM_FORMAT_NV12
:
5560 case DRM_FORMAT_NV21
:
5561 case DRM_FORMAT_NV16
:
5562 case DRM_FORMAT_NV61
:
5563 case DRM_FORMAT_NV24
:
5564 case DRM_FORMAT_NV42
:
5570 EXPORT_SYMBOL(drm_format_num_planes
);
5573 * drm_format_plane_cpp - determine the bytes per pixel value
5574 * @format: pixel format (DRM_FORMAT_*)
5575 * @plane: plane index
5578 * The bytes per pixel value for the specified plane.
5580 int drm_format_plane_cpp(uint32_t format
, int plane
)
5585 if (plane
>= drm_format_num_planes(format
))
5589 case DRM_FORMAT_YUYV
:
5590 case DRM_FORMAT_YVYU
:
5591 case DRM_FORMAT_UYVY
:
5592 case DRM_FORMAT_VYUY
:
5594 case DRM_FORMAT_NV12
:
5595 case DRM_FORMAT_NV21
:
5596 case DRM_FORMAT_NV16
:
5597 case DRM_FORMAT_NV61
:
5598 case DRM_FORMAT_NV24
:
5599 case DRM_FORMAT_NV42
:
5600 return plane
? 2 : 1;
5601 case DRM_FORMAT_YUV410
:
5602 case DRM_FORMAT_YVU410
:
5603 case DRM_FORMAT_YUV411
:
5604 case DRM_FORMAT_YVU411
:
5605 case DRM_FORMAT_YUV420
:
5606 case DRM_FORMAT_YVU420
:
5607 case DRM_FORMAT_YUV422
:
5608 case DRM_FORMAT_YVU422
:
5609 case DRM_FORMAT_YUV444
:
5610 case DRM_FORMAT_YVU444
:
5613 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
5617 EXPORT_SYMBOL(drm_format_plane_cpp
);
5620 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5621 * @format: pixel format (DRM_FORMAT_*)
5624 * The horizontal chroma subsampling factor for the
5625 * specified pixel format.
5627 int drm_format_horz_chroma_subsampling(uint32_t format
)
5630 case DRM_FORMAT_YUV411
:
5631 case DRM_FORMAT_YVU411
:
5632 case DRM_FORMAT_YUV410
:
5633 case DRM_FORMAT_YVU410
:
5635 case DRM_FORMAT_YUYV
:
5636 case DRM_FORMAT_YVYU
:
5637 case DRM_FORMAT_UYVY
:
5638 case DRM_FORMAT_VYUY
:
5639 case DRM_FORMAT_NV12
:
5640 case DRM_FORMAT_NV21
:
5641 case DRM_FORMAT_NV16
:
5642 case DRM_FORMAT_NV61
:
5643 case DRM_FORMAT_YUV422
:
5644 case DRM_FORMAT_YVU422
:
5645 case DRM_FORMAT_YUV420
:
5646 case DRM_FORMAT_YVU420
:
5652 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5655 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5656 * @format: pixel format (DRM_FORMAT_*)
5659 * The vertical chroma subsampling factor for the
5660 * specified pixel format.
5662 int drm_format_vert_chroma_subsampling(uint32_t format
)
5665 case DRM_FORMAT_YUV410
:
5666 case DRM_FORMAT_YVU410
:
5668 case DRM_FORMAT_YUV420
:
5669 case DRM_FORMAT_YVU420
:
5670 case DRM_FORMAT_NV12
:
5671 case DRM_FORMAT_NV21
:
5677 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5680 * drm_rotation_simplify() - Try to simplify the rotation
5681 * @rotation: Rotation to be simplified
5682 * @supported_rotations: Supported rotations
5684 * Attempt to simplify the rotation to a form that is supported.
5685 * Eg. if the hardware supports everything except DRM_REFLECT_X
5686 * one could call this function like this:
5688 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5689 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5690 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5692 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5693 * transforms the hardware supports, this function may not
5694 * be able to produce a supported transform, so the caller should
5695 * check the result afterwards.
5697 unsigned int drm_rotation_simplify(unsigned int rotation
,
5698 unsigned int supported_rotations
)
5700 if (rotation
& ~supported_rotations
) {
5701 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5702 rotation
= (rotation
& ~0xf) | BIT((ffs(rotation
& 0xf) + 1) % 4);
5707 EXPORT_SYMBOL(drm_rotation_simplify
);
5710 * drm_mode_config_init - initialize DRM mode_configuration structure
5713 * Initialize @dev's mode_config structure, used for tracking the graphics
5714 * configuration of @dev.
5716 * Since this initializes the modeset locks, no locking is possible. Which is no
5717 * problem, since this should happen single threaded at init time. It is the
5718 * driver's problem to ensure this guarantee.
5721 void drm_mode_config_init(struct drm_device
*dev
)
5723 mutex_init(&dev
->mode_config
.mutex
);
5724 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5725 mutex_init(&dev
->mode_config
.idr_mutex
);
5726 mutex_init(&dev
->mode_config
.fb_lock
);
5727 mutex_init(&dev
->mode_config
.blob_lock
);
5728 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5729 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5730 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5731 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5732 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5733 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5734 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5735 idr_init(&dev
->mode_config
.crtc_idr
);
5736 idr_init(&dev
->mode_config
.tile_idr
);
5738 drm_modeset_lock_all(dev
);
5739 drm_mode_create_standard_properties(dev
);
5740 drm_modeset_unlock_all(dev
);
5742 /* Just to be sure */
5743 dev
->mode_config
.num_fb
= 0;
5744 dev
->mode_config
.num_connector
= 0;
5745 dev
->mode_config
.num_crtc
= 0;
5746 dev
->mode_config
.num_encoder
= 0;
5747 dev
->mode_config
.num_overlay_plane
= 0;
5748 dev
->mode_config
.num_total_plane
= 0;
5750 EXPORT_SYMBOL(drm_mode_config_init
);
5753 * drm_mode_config_cleanup - free up DRM mode_config info
5756 * Free up all the connectors and CRTCs associated with this DRM device, then
5757 * free up the framebuffers and associated buffer objects.
5759 * Note that since this /should/ happen single-threaded at driver/device
5760 * teardown time, no locking is required. It's the driver's job to ensure that
5761 * this guarantee actually holds true.
5763 * FIXME: cleanup any dangling user buffer objects too
5765 void drm_mode_config_cleanup(struct drm_device
*dev
)
5767 struct drm_connector
*connector
, *ot
;
5768 struct drm_crtc
*crtc
, *ct
;
5769 struct drm_encoder
*encoder
, *enct
;
5770 struct drm_framebuffer
*fb
, *fbt
;
5771 struct drm_property
*property
, *pt
;
5772 struct drm_property_blob
*blob
, *bt
;
5773 struct drm_plane
*plane
, *plt
;
5775 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5777 encoder
->funcs
->destroy(encoder
);
5780 list_for_each_entry_safe(connector
, ot
,
5781 &dev
->mode_config
.connector_list
, head
) {
5782 connector
->funcs
->destroy(connector
);
5785 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5787 drm_property_destroy(dev
, property
);
5790 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5792 drm_property_unreference_blob(blob
);
5796 * Single-threaded teardown context, so it's not required to grab the
5797 * fb_lock to protect against concurrent fb_list access. Contrary, it
5798 * would actually deadlock with the drm_framebuffer_cleanup function.
5800 * Also, if there are any framebuffers left, that's a driver leak now,
5801 * so politely WARN about this.
5803 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5804 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5805 drm_framebuffer_remove(fb
);
5808 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5810 plane
->funcs
->destroy(plane
);
5813 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5814 crtc
->funcs
->destroy(crtc
);
5817 idr_destroy(&dev
->mode_config
.tile_idr
);
5818 idr_destroy(&dev
->mode_config
.crtc_idr
);
5819 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5821 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5823 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5824 unsigned int supported_rotations
)
5826 static const struct drm_prop_enum_list props
[] = {
5827 { DRM_ROTATE_0
, "rotate-0" },
5828 { DRM_ROTATE_90
, "rotate-90" },
5829 { DRM_ROTATE_180
, "rotate-180" },
5830 { DRM_ROTATE_270
, "rotate-270" },
5831 { DRM_REFLECT_X
, "reflect-x" },
5832 { DRM_REFLECT_Y
, "reflect-y" },
5835 return drm_property_create_bitmask(dev
, 0, "rotation",
5836 props
, ARRAY_SIZE(props
),
5837 supported_rotations
);
5839 EXPORT_SYMBOL(drm_mode_create_rotation_property
);
5844 * Tile groups are used to represent tiled monitors with a unique
5845 * integer identifier. Tiled monitors using DisplayID v1.3 have
5846 * a unique 8-byte handle, we store this in a tile group, so we
5847 * have a common identifier for all tiles in a monitor group.
5849 static void drm_tile_group_free(struct kref
*kref
)
5851 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
5852 struct drm_device
*dev
= tg
->dev
;
5853 mutex_lock(&dev
->mode_config
.idr_mutex
);
5854 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
5855 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5860 * drm_mode_put_tile_group - drop a reference to a tile group.
5862 * @tg: tile group to drop reference to.
5864 * drop reference to tile group and free if 0.
5866 void drm_mode_put_tile_group(struct drm_device
*dev
,
5867 struct drm_tile_group
*tg
)
5869 kref_put(&tg
->refcount
, drm_tile_group_free
);
5873 * drm_mode_get_tile_group - get a reference to an existing tile group
5875 * @topology: 8-bytes unique per monitor.
5877 * Use the unique bytes to get a reference to an existing tile group.
5880 * tile group or NULL if not found.
5882 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
5885 struct drm_tile_group
*tg
;
5887 mutex_lock(&dev
->mode_config
.idr_mutex
);
5888 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
5889 if (!memcmp(tg
->group_data
, topology
, 8)) {
5890 if (!kref_get_unless_zero(&tg
->refcount
))
5892 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5896 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5899 EXPORT_SYMBOL(drm_mode_get_tile_group
);
5902 * drm_mode_create_tile_group - create a tile group from a displayid description
5904 * @topology: 8-bytes unique per monitor.
5906 * Create a tile group for the unique monitor, and get a unique
5907 * identifier for the tile group.
5910 * new tile group or error.
5912 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
5915 struct drm_tile_group
*tg
;
5918 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
5920 return ERR_PTR(-ENOMEM
);
5922 kref_init(&tg
->refcount
);
5923 memcpy(tg
->group_data
, topology
, 8);
5926 mutex_lock(&dev
->mode_config
.idr_mutex
);
5927 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
5935 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5938 EXPORT_SYMBOL(drm_mode_create_tile_group
);