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 const 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 * Zero on success, error code on failure.
311 int drm_mode_object_get(struct drm_device
*dev
,
312 struct drm_mode_object
*obj
, uint32_t obj_type
)
314 return drm_mode_object_get_reg(dev
, obj
, obj_type
, true);
317 static void drm_mode_object_register(struct drm_device
*dev
,
318 struct drm_mode_object
*obj
)
320 mutex_lock(&dev
->mode_config
.idr_mutex
);
321 idr_replace(&dev
->mode_config
.crtc_idr
, obj
, obj
->id
);
322 mutex_unlock(&dev
->mode_config
.idr_mutex
);
326 * drm_mode_object_put - free a modeset identifer
328 * @object: object to free
330 * Free @id from @dev's unique identifier pool. Note that despite the _get
331 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
332 * for reference counted modeset objects like framebuffers.
334 void drm_mode_object_put(struct drm_device
*dev
,
335 struct drm_mode_object
*object
)
337 mutex_lock(&dev
->mode_config
.idr_mutex
);
338 idr_remove(&dev
->mode_config
.crtc_idr
, object
->id
);
339 mutex_unlock(&dev
->mode_config
.idr_mutex
);
342 static struct drm_mode_object
*_object_find(struct drm_device
*dev
,
343 uint32_t id
, uint32_t type
)
345 struct drm_mode_object
*obj
= NULL
;
347 mutex_lock(&dev
->mode_config
.idr_mutex
);
348 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
349 if (obj
&& type
!= DRM_MODE_OBJECT_ANY
&& obj
->type
!= type
)
351 if (obj
&& obj
->id
!= id
)
353 /* don't leak out unref'd fb's */
355 (obj
->type
== DRM_MODE_OBJECT_FB
||
356 obj
->type
== DRM_MODE_OBJECT_BLOB
))
358 mutex_unlock(&dev
->mode_config
.idr_mutex
);
364 * drm_mode_object_find - look up a drm object with static lifetime
366 * @id: id of the mode object
367 * @type: type of the mode object
369 * Note that framebuffers cannot be looked up with this functions - since those
370 * are reference counted, they need special treatment. Even with
371 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
372 * rather than WARN_ON()).
374 struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
375 uint32_t id
, uint32_t type
)
377 struct drm_mode_object
*obj
= NULL
;
379 /* Framebuffers are reference counted and need their own lookup
381 WARN_ON(type
== DRM_MODE_OBJECT_FB
|| type
== DRM_MODE_OBJECT_BLOB
);
382 obj
= _object_find(dev
, id
, type
);
385 EXPORT_SYMBOL(drm_mode_object_find
);
388 * drm_framebuffer_init - initialize a framebuffer
390 * @fb: framebuffer to be initialized
391 * @funcs: ... with these functions
393 * Allocates an ID for the framebuffer's parent mode object, sets its mode
394 * functions & device file and adds it to the master fd list.
397 * This functions publishes the fb and makes it available for concurrent access
398 * by other users. Which means by this point the fb _must_ be fully set up -
399 * since all the fb attributes are invariant over its lifetime, no further
400 * locking but only correct reference counting is required.
403 * Zero on success, error code on failure.
405 int drm_framebuffer_init(struct drm_device
*dev
, struct drm_framebuffer
*fb
,
406 const struct drm_framebuffer_funcs
*funcs
)
410 mutex_lock(&dev
->mode_config
.fb_lock
);
411 kref_init(&fb
->refcount
);
412 INIT_LIST_HEAD(&fb
->filp_head
);
416 ret
= drm_mode_object_get(dev
, &fb
->base
, DRM_MODE_OBJECT_FB
);
420 dev
->mode_config
.num_fb
++;
421 list_add(&fb
->head
, &dev
->mode_config
.fb_list
);
423 mutex_unlock(&dev
->mode_config
.fb_lock
);
427 EXPORT_SYMBOL(drm_framebuffer_init
);
429 /* dev->mode_config.fb_lock must be held! */
430 static void __drm_framebuffer_unregister(struct drm_device
*dev
,
431 struct drm_framebuffer
*fb
)
433 mutex_lock(&dev
->mode_config
.idr_mutex
);
434 idr_remove(&dev
->mode_config
.crtc_idr
, fb
->base
.id
);
435 mutex_unlock(&dev
->mode_config
.idr_mutex
);
440 static void drm_framebuffer_free(struct kref
*kref
)
442 struct drm_framebuffer
*fb
=
443 container_of(kref
, struct drm_framebuffer
, refcount
);
444 struct drm_device
*dev
= fb
->dev
;
447 * The lookup idr holds a weak reference, which has not necessarily been
448 * removed at this point. Check for that.
450 mutex_lock(&dev
->mode_config
.fb_lock
);
452 /* Mark fb as reaped and drop idr ref. */
453 __drm_framebuffer_unregister(dev
, fb
);
455 mutex_unlock(&dev
->mode_config
.fb_lock
);
457 fb
->funcs
->destroy(fb
);
460 static struct drm_framebuffer
*__drm_framebuffer_lookup(struct drm_device
*dev
,
463 struct drm_mode_object
*obj
= NULL
;
464 struct drm_framebuffer
*fb
;
466 mutex_lock(&dev
->mode_config
.idr_mutex
);
467 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
468 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_FB
) || (obj
->id
!= id
))
472 mutex_unlock(&dev
->mode_config
.idr_mutex
);
478 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
480 * @id: id of the fb object
482 * If successful, this grabs an additional reference to the framebuffer -
483 * callers need to make sure to eventually unreference the returned framebuffer
484 * again, using @drm_framebuffer_unreference.
486 struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
489 struct drm_framebuffer
*fb
;
491 mutex_lock(&dev
->mode_config
.fb_lock
);
492 fb
= __drm_framebuffer_lookup(dev
, id
);
494 if (!kref_get_unless_zero(&fb
->refcount
))
497 mutex_unlock(&dev
->mode_config
.fb_lock
);
501 EXPORT_SYMBOL(drm_framebuffer_lookup
);
504 * drm_framebuffer_unreference - unref a framebuffer
505 * @fb: framebuffer to unref
507 * This functions decrements the fb's refcount and frees it if it drops to zero.
509 void drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
511 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
512 kref_put(&fb
->refcount
, drm_framebuffer_free
);
514 EXPORT_SYMBOL(drm_framebuffer_unreference
);
517 * drm_framebuffer_reference - incr the fb refcnt
520 * This functions increments the fb's refcount.
522 void drm_framebuffer_reference(struct drm_framebuffer
*fb
)
524 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
525 kref_get(&fb
->refcount
);
527 EXPORT_SYMBOL(drm_framebuffer_reference
);
530 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
531 * @fb: fb to unregister
533 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
534 * those used for fbdev. Note that the caller must hold a reference of it's own,
535 * i.e. the object may not be destroyed through this call (since it'll lead to a
536 * locking inversion).
538 void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
)
540 struct drm_device
*dev
;
547 mutex_lock(&dev
->mode_config
.fb_lock
);
548 /* Mark fb as reaped and drop idr ref. */
549 __drm_framebuffer_unregister(dev
, fb
);
550 mutex_unlock(&dev
->mode_config
.fb_lock
);
552 EXPORT_SYMBOL(drm_framebuffer_unregister_private
);
555 * drm_framebuffer_cleanup - remove a framebuffer object
556 * @fb: framebuffer to remove
558 * Cleanup framebuffer. This function is intended to be used from the drivers
559 * ->destroy callback. It can also be used to clean up driver private
560 * framebuffers embedded into a larger structure.
562 * Note that this function does not remove the fb from active usuage - if it is
563 * still used anywhere, hilarity can ensue since userspace could call getfb on
564 * the id and get back -EINVAL. Obviously no concern at driver unload time.
566 * Also, the framebuffer will not be removed from the lookup idr - for
567 * user-created framebuffers this will happen in in the rmfb ioctl. For
568 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
569 * drm_framebuffer_unregister_private.
571 void drm_framebuffer_cleanup(struct drm_framebuffer
*fb
)
573 struct drm_device
*dev
= fb
->dev
;
575 mutex_lock(&dev
->mode_config
.fb_lock
);
577 dev
->mode_config
.num_fb
--;
578 mutex_unlock(&dev
->mode_config
.fb_lock
);
580 EXPORT_SYMBOL(drm_framebuffer_cleanup
);
583 * drm_framebuffer_remove - remove and unreference a framebuffer object
584 * @fb: framebuffer to remove
586 * Scans all the CRTCs and planes in @dev's mode_config. If they're
587 * using @fb, removes it, setting it to NULL. Then drops the reference to the
588 * passed-in framebuffer. Might take the modeset locks.
590 * Note that this function optimizes the cleanup away if the caller holds the
591 * last reference to the framebuffer. It is also guaranteed to not take the
592 * modeset locks in this case.
594 void drm_framebuffer_remove(struct drm_framebuffer
*fb
)
596 struct drm_device
*dev
;
597 struct drm_crtc
*crtc
;
598 struct drm_plane
*plane
;
599 struct drm_mode_set set
;
607 WARN_ON(!list_empty(&fb
->filp_head
));
610 * drm ABI mandates that we remove any deleted framebuffers from active
611 * useage. But since most sane clients only remove framebuffers they no
612 * longer need, try to optimize this away.
614 * Since we're holding a reference ourselves, observing a refcount of 1
615 * means that we're the last holder and can skip it. Also, the refcount
616 * can never increase from 1 again, so we don't need any barriers or
619 * Note that userspace could try to race with use and instate a new
620 * usage _after_ we've cleared all current ones. End result will be an
621 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
624 if (atomic_read(&fb
->refcount
.refcount
) > 1) {
625 drm_modeset_lock_all(dev
);
626 /* remove from any CRTC */
627 drm_for_each_crtc(crtc
, dev
) {
628 if (crtc
->primary
->fb
== fb
) {
629 /* should turn off the crtc */
630 memset(&set
, 0, sizeof(struct drm_mode_set
));
633 ret
= drm_mode_set_config_internal(&set
);
635 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc
);
639 drm_for_each_plane(plane
, dev
) {
641 drm_plane_force_disable(plane
);
643 drm_modeset_unlock_all(dev
);
646 drm_framebuffer_unreference(fb
);
648 EXPORT_SYMBOL(drm_framebuffer_remove
);
650 DEFINE_WW_CLASS(crtc_ww_class
);
652 static unsigned int drm_num_crtcs(struct drm_device
*dev
)
654 unsigned int num
= 0;
655 struct drm_crtc
*tmp
;
657 drm_for_each_crtc(tmp
, dev
) {
665 * drm_crtc_init_with_planes - Initialise a new CRTC object with
666 * specified primary and cursor planes.
668 * @crtc: CRTC object to init
669 * @primary: Primary plane for CRTC
670 * @cursor: Cursor plane for CRTC
671 * @funcs: callbacks for the new CRTC
672 * @name: printf style format string for the CRTC name, or NULL for default name
674 * Inits a new object created as base part of a driver crtc object.
677 * Zero on success, error code on failure.
679 int drm_crtc_init_with_planes(struct drm_device
*dev
, struct drm_crtc
*crtc
,
680 struct drm_plane
*primary
,
681 struct drm_plane
*cursor
,
682 const struct drm_crtc_funcs
*funcs
,
683 const char *name
, ...)
685 struct drm_mode_config
*config
= &dev
->mode_config
;
688 WARN_ON(primary
&& primary
->type
!= DRM_PLANE_TYPE_PRIMARY
);
689 WARN_ON(cursor
&& cursor
->type
!= DRM_PLANE_TYPE_CURSOR
);
694 drm_modeset_lock_init(&crtc
->mutex
);
695 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
703 crtc
->name
= kvasprintf(GFP_KERNEL
, name
, ap
);
706 crtc
->name
= kasprintf(GFP_KERNEL
, "crtc-%d",
710 drm_mode_object_put(dev
, &crtc
->base
);
714 crtc
->base
.properties
= &crtc
->properties
;
716 list_add_tail(&crtc
->head
, &config
->crtc_list
);
719 crtc
->primary
= primary
;
720 crtc
->cursor
= cursor
;
722 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
724 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
726 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
727 drm_object_attach_property(&crtc
->base
, config
->prop_active
, 0);
728 drm_object_attach_property(&crtc
->base
, config
->prop_mode_id
, 0);
733 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
736 * drm_crtc_cleanup - Clean up the core crtc usage
737 * @crtc: CRTC to cleanup
739 * This function cleans up @crtc and removes it from the DRM mode setting
740 * core. Note that the function does *not* free the crtc structure itself,
741 * this is the responsibility of the caller.
743 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
745 struct drm_device
*dev
= crtc
->dev
;
747 kfree(crtc
->gamma_store
);
748 crtc
->gamma_store
= NULL
;
750 drm_modeset_lock_fini(&crtc
->mutex
);
752 drm_mode_object_put(dev
, &crtc
->base
);
753 list_del(&crtc
->head
);
754 dev
->mode_config
.num_crtc
--;
756 WARN_ON(crtc
->state
&& !crtc
->funcs
->atomic_destroy_state
);
757 if (crtc
->state
&& crtc
->funcs
->atomic_destroy_state
)
758 crtc
->funcs
->atomic_destroy_state(crtc
, crtc
->state
);
762 memset(crtc
, 0, sizeof(*crtc
));
764 EXPORT_SYMBOL(drm_crtc_cleanup
);
767 * drm_crtc_index - find the index of a registered CRTC
768 * @crtc: CRTC to find index for
770 * Given a registered CRTC, return the index of that CRTC within a DRM
771 * device's list of CRTCs.
773 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
775 unsigned int index
= 0;
776 struct drm_crtc
*tmp
;
778 drm_for_each_crtc(tmp
, crtc
->dev
) {
787 EXPORT_SYMBOL(drm_crtc_index
);
790 * drm_mode_remove - remove and free a mode
791 * @connector: connector list to modify
792 * @mode: mode to remove
794 * Remove @mode from @connector's mode list, then free it.
796 static void drm_mode_remove(struct drm_connector
*connector
,
797 struct drm_display_mode
*mode
)
799 list_del(&mode
->head
);
800 drm_mode_destroy(connector
->dev
, mode
);
804 * drm_display_info_set_bus_formats - set the supported bus formats
805 * @info: display info to store bus formats in
806 * @formats: array containing the supported bus formats
807 * @num_formats: the number of entries in the fmts array
809 * Store the supported bus formats in display info structure.
810 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
811 * a full list of available formats.
813 int drm_display_info_set_bus_formats(struct drm_display_info
*info
,
815 unsigned int num_formats
)
819 if (!formats
&& num_formats
)
822 if (formats
&& num_formats
) {
823 fmts
= kmemdup(formats
, sizeof(*formats
) * num_formats
,
829 kfree(info
->bus_formats
);
830 info
->bus_formats
= fmts
;
831 info
->num_bus_formats
= num_formats
;
835 EXPORT_SYMBOL(drm_display_info_set_bus_formats
);
838 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
839 * @connector: connector to quwery
841 * The kernel supports per-connector configration of its consoles through
842 * use of the video= parameter. This function parses that option and
843 * extracts the user's specified mode (or enable/disable status) for a
844 * particular connector. This is typically only used during the early fbdev
847 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
849 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
852 if (fb_get_options(connector
->name
, &option
))
855 if (!drm_mode_parse_command_line_for_connector(option
,
863 switch (mode
->force
) {
867 case DRM_FORCE_ON_DIGITAL
:
876 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
877 connector
->force
= mode
->force
;
880 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
882 mode
->xres
, mode
->yres
,
883 mode
->refresh_specified
? mode
->refresh
: 60,
884 mode
->rb
? " reduced blanking" : "",
885 mode
->margins
? " with margins" : "",
886 mode
->interlace
? " interlaced" : "");
890 * drm_connector_init - Init a preallocated connector
892 * @connector: the connector to init
893 * @funcs: callbacks for this connector
894 * @connector_type: user visible type of the connector
896 * Initialises a preallocated connector. Connectors should be
897 * subclassed as part of driver connector objects.
900 * Zero on success, error code on failure.
902 int drm_connector_init(struct drm_device
*dev
,
903 struct drm_connector
*connector
,
904 const struct drm_connector_funcs
*funcs
,
907 struct drm_mode_config
*config
= &dev
->mode_config
;
909 struct ida
*connector_ida
=
910 &drm_connector_enum_list
[connector_type
].ida
;
912 drm_modeset_lock_all(dev
);
914 ret
= drm_mode_object_get_reg(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
, false);
918 connector
->base
.properties
= &connector
->properties
;
919 connector
->dev
= dev
;
920 connector
->funcs
= funcs
;
922 connector
->connector_id
= ida_simple_get(&config
->connector_ida
, 0, 0, GFP_KERNEL
);
923 if (connector
->connector_id
< 0) {
924 ret
= connector
->connector_id
;
928 connector
->connector_type
= connector_type
;
929 connector
->connector_type_id
=
930 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
931 if (connector
->connector_type_id
< 0) {
932 ret
= connector
->connector_type_id
;
936 kasprintf(GFP_KERNEL
, "%s-%d",
937 drm_connector_enum_list
[connector_type
].name
,
938 connector
->connector_type_id
);
939 if (!connector
->name
) {
941 goto out_put_type_id
;
944 INIT_LIST_HEAD(&connector
->probed_modes
);
945 INIT_LIST_HEAD(&connector
->modes
);
946 connector
->edid_blob_ptr
= NULL
;
947 connector
->status
= connector_status_unknown
;
949 drm_connector_get_cmdline_mode(connector
);
951 /* We should add connectors at the end to avoid upsetting the connector
953 list_add_tail(&connector
->head
, &config
->connector_list
);
954 config
->num_connector
++;
956 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
957 drm_object_attach_property(&connector
->base
,
958 config
->edid_property
,
961 drm_object_attach_property(&connector
->base
,
962 config
->dpms_property
, 0);
964 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
965 drm_object_attach_property(&connector
->base
, config
->prop_crtc_id
, 0);
968 connector
->debugfs_entry
= NULL
;
971 ida_remove(connector_ida
, connector
->connector_type_id
);
974 ida_remove(&config
->connector_ida
, connector
->connector_id
);
977 drm_mode_object_put(dev
, &connector
->base
);
980 drm_modeset_unlock_all(dev
);
984 EXPORT_SYMBOL(drm_connector_init
);
987 * drm_connector_cleanup - cleans up an initialised connector
988 * @connector: connector to cleanup
990 * Cleans up the connector but doesn't free the object.
992 void drm_connector_cleanup(struct drm_connector
*connector
)
994 struct drm_device
*dev
= connector
->dev
;
995 struct drm_display_mode
*mode
, *t
;
997 if (connector
->tile_group
) {
998 drm_mode_put_tile_group(dev
, connector
->tile_group
);
999 connector
->tile_group
= NULL
;
1002 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
1003 drm_mode_remove(connector
, mode
);
1005 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
1006 drm_mode_remove(connector
, mode
);
1008 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
1009 connector
->connector_type_id
);
1011 ida_remove(&dev
->mode_config
.connector_ida
,
1012 connector
->connector_id
);
1014 kfree(connector
->display_info
.bus_formats
);
1015 drm_mode_object_put(dev
, &connector
->base
);
1016 kfree(connector
->name
);
1017 connector
->name
= NULL
;
1018 list_del(&connector
->head
);
1019 dev
->mode_config
.num_connector
--;
1021 WARN_ON(connector
->state
&& !connector
->funcs
->atomic_destroy_state
);
1022 if (connector
->state
&& connector
->funcs
->atomic_destroy_state
)
1023 connector
->funcs
->atomic_destroy_state(connector
,
1026 memset(connector
, 0, sizeof(*connector
));
1028 EXPORT_SYMBOL(drm_connector_cleanup
);
1031 * drm_connector_register - register a connector
1032 * @connector: the connector to register
1034 * Register userspace interfaces for a connector
1037 * Zero on success, error code on failure.
1039 int drm_connector_register(struct drm_connector
*connector
)
1043 drm_mode_object_register(connector
->dev
, &connector
->base
);
1045 ret
= drm_sysfs_connector_add(connector
);
1049 ret
= drm_debugfs_connector_add(connector
);
1051 drm_sysfs_connector_remove(connector
);
1057 EXPORT_SYMBOL(drm_connector_register
);
1060 * drm_connector_unregister - unregister a connector
1061 * @connector: the connector to unregister
1063 * Unregister userspace interfaces for a connector
1065 void drm_connector_unregister(struct drm_connector
*connector
)
1067 drm_sysfs_connector_remove(connector
);
1068 drm_debugfs_connector_remove(connector
);
1070 EXPORT_SYMBOL(drm_connector_unregister
);
1074 * drm_connector_unplug_all - unregister connector userspace interfaces
1077 * This function unregisters all connector userspace interfaces in sysfs. Should
1078 * be call when the device is disconnected, e.g. from an usb driver's
1079 * ->disconnect callback.
1081 void drm_connector_unplug_all(struct drm_device
*dev
)
1083 struct drm_connector
*connector
;
1085 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1086 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1087 drm_connector_unregister(connector
);
1090 EXPORT_SYMBOL(drm_connector_unplug_all
);
1093 * drm_encoder_init - Init a preallocated encoder
1095 * @encoder: the encoder to init
1096 * @funcs: callbacks for this encoder
1097 * @encoder_type: user visible type of the encoder
1098 * @name: printf style format string for the encoder name, or NULL for default name
1100 * Initialises a preallocated encoder. Encoder should be
1101 * subclassed as part of driver encoder objects.
1104 * Zero on success, error code on failure.
1106 int drm_encoder_init(struct drm_device
*dev
,
1107 struct drm_encoder
*encoder
,
1108 const struct drm_encoder_funcs
*funcs
,
1109 int encoder_type
, const char *name
, ...)
1113 drm_modeset_lock_all(dev
);
1115 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1120 encoder
->encoder_type
= encoder_type
;
1121 encoder
->funcs
= funcs
;
1126 encoder
->name
= kvasprintf(GFP_KERNEL
, name
, ap
);
1129 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1130 drm_encoder_enum_list
[encoder_type
].name
,
1133 if (!encoder
->name
) {
1138 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1139 dev
->mode_config
.num_encoder
++;
1143 drm_mode_object_put(dev
, &encoder
->base
);
1146 drm_modeset_unlock_all(dev
);
1150 EXPORT_SYMBOL(drm_encoder_init
);
1153 * drm_encoder_cleanup - cleans up an initialised encoder
1154 * @encoder: encoder to cleanup
1156 * Cleans up the encoder but doesn't free the object.
1158 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1160 struct drm_device
*dev
= encoder
->dev
;
1162 drm_modeset_lock_all(dev
);
1163 drm_mode_object_put(dev
, &encoder
->base
);
1164 kfree(encoder
->name
);
1165 list_del(&encoder
->head
);
1166 dev
->mode_config
.num_encoder
--;
1167 drm_modeset_unlock_all(dev
);
1169 memset(encoder
, 0, sizeof(*encoder
));
1171 EXPORT_SYMBOL(drm_encoder_cleanup
);
1173 static unsigned int drm_num_planes(struct drm_device
*dev
)
1175 unsigned int num
= 0;
1176 struct drm_plane
*tmp
;
1178 drm_for_each_plane(tmp
, dev
) {
1186 * drm_universal_plane_init - Initialize a new universal plane object
1188 * @plane: plane object to init
1189 * @possible_crtcs: bitmask of possible CRTCs
1190 * @funcs: callbacks for the new plane
1191 * @formats: array of supported formats (%DRM_FORMAT_*)
1192 * @format_count: number of elements in @formats
1193 * @type: type of plane (overlay, primary, cursor)
1194 * @name: printf style format string for the plane name, or NULL for default name
1196 * Initializes a plane object of type @type.
1199 * Zero on success, error code on failure.
1201 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1202 unsigned long possible_crtcs
,
1203 const struct drm_plane_funcs
*funcs
,
1204 const uint32_t *formats
, unsigned int format_count
,
1205 enum drm_plane_type type
,
1206 const char *name
, ...)
1208 struct drm_mode_config
*config
= &dev
->mode_config
;
1211 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1215 drm_modeset_lock_init(&plane
->mutex
);
1217 plane
->base
.properties
= &plane
->properties
;
1219 plane
->funcs
= funcs
;
1220 plane
->format_types
= kmalloc_array(format_count
, sizeof(uint32_t),
1222 if (!plane
->format_types
) {
1223 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1224 drm_mode_object_put(dev
, &plane
->base
);
1232 plane
->name
= kvasprintf(GFP_KERNEL
, name
, ap
);
1235 plane
->name
= kasprintf(GFP_KERNEL
, "plane-%d",
1236 drm_num_planes(dev
));
1239 kfree(plane
->format_types
);
1240 drm_mode_object_put(dev
, &plane
->base
);
1244 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1245 plane
->format_count
= format_count
;
1246 plane
->possible_crtcs
= possible_crtcs
;
1249 list_add_tail(&plane
->head
, &config
->plane_list
);
1250 config
->num_total_plane
++;
1251 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1252 config
->num_overlay_plane
++;
1254 drm_object_attach_property(&plane
->base
,
1255 config
->plane_type_property
,
1258 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
1259 drm_object_attach_property(&plane
->base
, config
->prop_fb_id
, 0);
1260 drm_object_attach_property(&plane
->base
, config
->prop_crtc_id
, 0);
1261 drm_object_attach_property(&plane
->base
, config
->prop_crtc_x
, 0);
1262 drm_object_attach_property(&plane
->base
, config
->prop_crtc_y
, 0);
1263 drm_object_attach_property(&plane
->base
, config
->prop_crtc_w
, 0);
1264 drm_object_attach_property(&plane
->base
, config
->prop_crtc_h
, 0);
1265 drm_object_attach_property(&plane
->base
, config
->prop_src_x
, 0);
1266 drm_object_attach_property(&plane
->base
, config
->prop_src_y
, 0);
1267 drm_object_attach_property(&plane
->base
, config
->prop_src_w
, 0);
1268 drm_object_attach_property(&plane
->base
, config
->prop_src_h
, 0);
1273 EXPORT_SYMBOL(drm_universal_plane_init
);
1276 * drm_plane_init - Initialize a legacy plane
1278 * @plane: plane object to init
1279 * @possible_crtcs: bitmask of possible CRTCs
1280 * @funcs: callbacks for the new plane
1281 * @formats: array of supported formats (%DRM_FORMAT_*)
1282 * @format_count: number of elements in @formats
1283 * @is_primary: plane type (primary vs overlay)
1285 * Legacy API to initialize a DRM plane.
1287 * New drivers should call drm_universal_plane_init() instead.
1290 * Zero on success, error code on failure.
1292 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1293 unsigned long possible_crtcs
,
1294 const struct drm_plane_funcs
*funcs
,
1295 const uint32_t *formats
, unsigned int format_count
,
1298 enum drm_plane_type type
;
1300 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1301 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1302 formats
, format_count
, type
, NULL
);
1304 EXPORT_SYMBOL(drm_plane_init
);
1307 * drm_plane_cleanup - Clean up the core plane usage
1308 * @plane: plane to cleanup
1310 * This function cleans up @plane and removes it from the DRM mode setting
1311 * core. Note that the function does *not* free the plane structure itself,
1312 * this is the responsibility of the caller.
1314 void drm_plane_cleanup(struct drm_plane
*plane
)
1316 struct drm_device
*dev
= plane
->dev
;
1318 drm_modeset_lock_all(dev
);
1319 kfree(plane
->format_types
);
1320 drm_mode_object_put(dev
, &plane
->base
);
1322 BUG_ON(list_empty(&plane
->head
));
1324 list_del(&plane
->head
);
1325 dev
->mode_config
.num_total_plane
--;
1326 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1327 dev
->mode_config
.num_overlay_plane
--;
1328 drm_modeset_unlock_all(dev
);
1330 WARN_ON(plane
->state
&& !plane
->funcs
->atomic_destroy_state
);
1331 if (plane
->state
&& plane
->funcs
->atomic_destroy_state
)
1332 plane
->funcs
->atomic_destroy_state(plane
, plane
->state
);
1336 memset(plane
, 0, sizeof(*plane
));
1338 EXPORT_SYMBOL(drm_plane_cleanup
);
1341 * drm_plane_index - find the index of a registered plane
1342 * @plane: plane to find index for
1344 * Given a registered plane, return the index of that CRTC within a DRM
1345 * device's list of planes.
1347 unsigned int drm_plane_index(struct drm_plane
*plane
)
1349 unsigned int index
= 0;
1350 struct drm_plane
*tmp
;
1352 drm_for_each_plane(tmp
, plane
->dev
) {
1361 EXPORT_SYMBOL(drm_plane_index
);
1364 * drm_plane_from_index - find the registered plane at an index
1366 * @idx: index of registered plane to find for
1368 * Given a plane index, return the registered plane from DRM device's
1369 * list of planes with matching index.
1372 drm_plane_from_index(struct drm_device
*dev
, int idx
)
1374 struct drm_plane
*plane
;
1377 drm_for_each_plane(plane
, dev
) {
1384 EXPORT_SYMBOL(drm_plane_from_index
);
1387 * drm_plane_force_disable - Forcibly disable a plane
1388 * @plane: plane to disable
1390 * Forces the plane to be disabled.
1392 * Used when the plane's current framebuffer is destroyed,
1393 * and when restoring fbdev mode.
1395 void drm_plane_force_disable(struct drm_plane
*plane
)
1402 plane
->old_fb
= plane
->fb
;
1403 ret
= plane
->funcs
->disable_plane(plane
);
1405 DRM_ERROR("failed to disable plane with busy fb\n");
1406 plane
->old_fb
= NULL
;
1409 /* disconnect the plane from the fb and crtc: */
1410 drm_framebuffer_unreference(plane
->old_fb
);
1411 plane
->old_fb
= NULL
;
1415 EXPORT_SYMBOL(drm_plane_force_disable
);
1417 static int drm_mode_create_standard_properties(struct drm_device
*dev
)
1419 struct drm_property
*prop
;
1422 * Standard properties (apply to all connectors)
1424 prop
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1425 DRM_MODE_PROP_IMMUTABLE
,
1429 dev
->mode_config
.edid_property
= prop
;
1431 prop
= drm_property_create_enum(dev
, 0,
1432 "DPMS", drm_dpms_enum_list
,
1433 ARRAY_SIZE(drm_dpms_enum_list
));
1436 dev
->mode_config
.dpms_property
= prop
;
1438 prop
= drm_property_create(dev
,
1439 DRM_MODE_PROP_BLOB
|
1440 DRM_MODE_PROP_IMMUTABLE
,
1444 dev
->mode_config
.path_property
= prop
;
1446 prop
= drm_property_create(dev
,
1447 DRM_MODE_PROP_BLOB
|
1448 DRM_MODE_PROP_IMMUTABLE
,
1452 dev
->mode_config
.tile_property
= prop
;
1454 prop
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1455 "type", drm_plane_type_enum_list
,
1456 ARRAY_SIZE(drm_plane_type_enum_list
));
1459 dev
->mode_config
.plane_type_property
= prop
;
1461 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1462 "SRC_X", 0, UINT_MAX
);
1465 dev
->mode_config
.prop_src_x
= prop
;
1467 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1468 "SRC_Y", 0, UINT_MAX
);
1471 dev
->mode_config
.prop_src_y
= prop
;
1473 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1474 "SRC_W", 0, UINT_MAX
);
1477 dev
->mode_config
.prop_src_w
= prop
;
1479 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1480 "SRC_H", 0, UINT_MAX
);
1483 dev
->mode_config
.prop_src_h
= prop
;
1485 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1486 "CRTC_X", INT_MIN
, INT_MAX
);
1489 dev
->mode_config
.prop_crtc_x
= prop
;
1491 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1492 "CRTC_Y", INT_MIN
, INT_MAX
);
1495 dev
->mode_config
.prop_crtc_y
= prop
;
1497 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1498 "CRTC_W", 0, INT_MAX
);
1501 dev
->mode_config
.prop_crtc_w
= prop
;
1503 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1504 "CRTC_H", 0, INT_MAX
);
1507 dev
->mode_config
.prop_crtc_h
= prop
;
1509 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1510 "FB_ID", DRM_MODE_OBJECT_FB
);
1513 dev
->mode_config
.prop_fb_id
= prop
;
1515 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1516 "CRTC_ID", DRM_MODE_OBJECT_CRTC
);
1519 dev
->mode_config
.prop_crtc_id
= prop
;
1521 prop
= drm_property_create_bool(dev
, DRM_MODE_PROP_ATOMIC
,
1525 dev
->mode_config
.prop_active
= prop
;
1527 prop
= drm_property_create(dev
,
1528 DRM_MODE_PROP_ATOMIC
| DRM_MODE_PROP_BLOB
,
1532 dev
->mode_config
.prop_mode_id
= prop
;
1538 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1541 * Called by a driver the first time a DVI-I connector is made.
1543 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1545 struct drm_property
*dvi_i_selector
;
1546 struct drm_property
*dvi_i_subconnector
;
1548 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1552 drm_property_create_enum(dev
, 0,
1553 "select subconnector",
1554 drm_dvi_i_select_enum_list
,
1555 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1556 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1558 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1560 drm_dvi_i_subconnector_enum_list
,
1561 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1562 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1566 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1569 * drm_create_tv_properties - create TV specific connector properties
1571 * @num_modes: number of different TV formats (modes) supported
1572 * @modes: array of pointers to strings containing name of each format
1574 * Called by a driver's TV initialization routine, this function creates
1575 * the TV specific connector properties for a given device. Caller is
1576 * responsible for allocating a list of format names and passing them to
1579 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1580 unsigned int num_modes
,
1581 const char * const modes
[])
1583 struct drm_property
*tv_selector
;
1584 struct drm_property
*tv_subconnector
;
1587 if (dev
->mode_config
.tv_select_subconnector_property
)
1591 * Basic connector properties
1593 tv_selector
= drm_property_create_enum(dev
, 0,
1594 "select subconnector",
1595 drm_tv_select_enum_list
,
1596 ARRAY_SIZE(drm_tv_select_enum_list
));
1600 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1603 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1605 drm_tv_subconnector_enum_list
,
1606 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1607 if (!tv_subconnector
)
1609 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1612 * Other, TV specific properties: margins & TV modes.
1614 dev
->mode_config
.tv_left_margin_property
=
1615 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1616 if (!dev
->mode_config
.tv_left_margin_property
)
1619 dev
->mode_config
.tv_right_margin_property
=
1620 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1621 if (!dev
->mode_config
.tv_right_margin_property
)
1624 dev
->mode_config
.tv_top_margin_property
=
1625 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1626 if (!dev
->mode_config
.tv_top_margin_property
)
1629 dev
->mode_config
.tv_bottom_margin_property
=
1630 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1631 if (!dev
->mode_config
.tv_bottom_margin_property
)
1634 dev
->mode_config
.tv_mode_property
=
1635 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1637 if (!dev
->mode_config
.tv_mode_property
)
1640 for (i
= 0; i
< num_modes
; i
++)
1641 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1644 dev
->mode_config
.tv_brightness_property
=
1645 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1646 if (!dev
->mode_config
.tv_brightness_property
)
1649 dev
->mode_config
.tv_contrast_property
=
1650 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1651 if (!dev
->mode_config
.tv_contrast_property
)
1654 dev
->mode_config
.tv_flicker_reduction_property
=
1655 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1656 if (!dev
->mode_config
.tv_flicker_reduction_property
)
1659 dev
->mode_config
.tv_overscan_property
=
1660 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1661 if (!dev
->mode_config
.tv_overscan_property
)
1664 dev
->mode_config
.tv_saturation_property
=
1665 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1666 if (!dev
->mode_config
.tv_saturation_property
)
1669 dev
->mode_config
.tv_hue_property
=
1670 drm_property_create_range(dev
, 0, "hue", 0, 100);
1671 if (!dev
->mode_config
.tv_hue_property
)
1678 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1681 * drm_mode_create_scaling_mode_property - create scaling mode property
1684 * Called by a driver the first time it's needed, must be attached to desired
1687 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1689 struct drm_property
*scaling_mode
;
1691 if (dev
->mode_config
.scaling_mode_property
)
1695 drm_property_create_enum(dev
, 0, "scaling mode",
1696 drm_scaling_mode_enum_list
,
1697 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1699 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1703 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1706 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1709 * Called by a driver the first time it's needed, must be attached to desired
1713 * Zero on success, negative errno on failure.
1715 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1717 if (dev
->mode_config
.aspect_ratio_property
)
1720 dev
->mode_config
.aspect_ratio_property
=
1721 drm_property_create_enum(dev
, 0, "aspect ratio",
1722 drm_aspect_ratio_enum_list
,
1723 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1725 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1730 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1733 * drm_mode_create_dirty_property - create dirty property
1736 * Called by a driver the first time it's needed, must be attached to desired
1739 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1741 struct drm_property
*dirty_info
;
1743 if (dev
->mode_config
.dirty_info_property
)
1747 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1749 drm_dirty_info_enum_list
,
1750 ARRAY_SIZE(drm_dirty_info_enum_list
));
1751 dev
->mode_config
.dirty_info_property
= dirty_info
;
1755 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1758 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1761 * Create the the suggested x/y offset property for connectors.
1763 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1765 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1768 dev
->mode_config
.suggested_x_property
=
1769 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1771 dev
->mode_config
.suggested_y_property
=
1772 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1774 if (dev
->mode_config
.suggested_x_property
== NULL
||
1775 dev
->mode_config
.suggested_y_property
== NULL
)
1779 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1782 * drm_mode_getresources - get graphics configuration
1783 * @dev: drm device for the ioctl
1784 * @data: data pointer for the ioctl
1785 * @file_priv: drm file for the ioctl call
1787 * Construct a set of configuration description structures and return
1788 * them to the user, including CRTC, connector and framebuffer configuration.
1790 * Called by the user via ioctl.
1793 * Zero on success, negative errno on failure.
1795 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1796 struct drm_file
*file_priv
)
1798 struct drm_mode_card_res
*card_res
= data
;
1799 struct list_head
*lh
;
1800 struct drm_framebuffer
*fb
;
1801 struct drm_connector
*connector
;
1802 struct drm_crtc
*crtc
;
1803 struct drm_encoder
*encoder
;
1805 int connector_count
= 0;
1808 int encoder_count
= 0;
1810 uint32_t __user
*fb_id
;
1811 uint32_t __user
*crtc_id
;
1812 uint32_t __user
*connector_id
;
1813 uint32_t __user
*encoder_id
;
1815 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1819 mutex_lock(&file_priv
->fbs_lock
);
1821 * For the non-control nodes we need to limit the list of resources
1822 * by IDs in the group list for this node
1824 list_for_each(lh
, &file_priv
->fbs
)
1827 /* handle this in 4 parts */
1829 if (card_res
->count_fbs
>= fb_count
) {
1831 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1832 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1833 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1834 mutex_unlock(&file_priv
->fbs_lock
);
1840 card_res
->count_fbs
= fb_count
;
1841 mutex_unlock(&file_priv
->fbs_lock
);
1843 /* mode_config.mutex protects the connector list against e.g. DP MST
1844 * connector hot-adding. CRTC/Plane lists are invariant. */
1845 mutex_lock(&dev
->mode_config
.mutex
);
1846 drm_for_each_crtc(crtc
, dev
)
1849 drm_for_each_connector(connector
, dev
)
1852 drm_for_each_encoder(encoder
, dev
)
1855 card_res
->max_height
= dev
->mode_config
.max_height
;
1856 card_res
->min_height
= dev
->mode_config
.min_height
;
1857 card_res
->max_width
= dev
->mode_config
.max_width
;
1858 card_res
->min_width
= dev
->mode_config
.min_width
;
1861 if (card_res
->count_crtcs
>= crtc_count
) {
1863 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1864 drm_for_each_crtc(crtc
, dev
) {
1865 DRM_DEBUG_KMS("[CRTC:%d:%s]\n",
1866 crtc
->base
.id
, crtc
->name
);
1867 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1874 card_res
->count_crtcs
= crtc_count
;
1877 if (card_res
->count_encoders
>= encoder_count
) {
1879 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1880 drm_for_each_encoder(encoder
, dev
) {
1881 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1883 if (put_user(encoder
->base
.id
, encoder_id
+
1891 card_res
->count_encoders
= encoder_count
;
1894 if (card_res
->count_connectors
>= connector_count
) {
1896 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1897 drm_for_each_connector(connector
, dev
) {
1898 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1901 if (put_user(connector
->base
.id
,
1902 connector_id
+ copied
)) {
1909 card_res
->count_connectors
= connector_count
;
1911 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1912 card_res
->count_connectors
, card_res
->count_encoders
);
1915 mutex_unlock(&dev
->mode_config
.mutex
);
1920 * drm_mode_getcrtc - get CRTC configuration
1921 * @dev: drm device for the ioctl
1922 * @data: data pointer for the ioctl
1923 * @file_priv: drm file for the ioctl call
1925 * Construct a CRTC configuration structure to return to the user.
1927 * Called by the user via ioctl.
1930 * Zero on success, negative errno on failure.
1932 int drm_mode_getcrtc(struct drm_device
*dev
,
1933 void *data
, struct drm_file
*file_priv
)
1935 struct drm_mode_crtc
*crtc_resp
= data
;
1936 struct drm_crtc
*crtc
;
1938 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1941 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
1945 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
1946 crtc_resp
->gamma_size
= crtc
->gamma_size
;
1947 if (crtc
->primary
->fb
)
1948 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
1950 crtc_resp
->fb_id
= 0;
1953 crtc_resp
->x
= crtc
->primary
->state
->src_x
>> 16;
1954 crtc_resp
->y
= crtc
->primary
->state
->src_y
>> 16;
1955 if (crtc
->state
->enable
) {
1956 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->state
->mode
);
1957 crtc_resp
->mode_valid
= 1;
1960 crtc_resp
->mode_valid
= 0;
1963 crtc_resp
->x
= crtc
->x
;
1964 crtc_resp
->y
= crtc
->y
;
1965 if (crtc
->enabled
) {
1966 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
1967 crtc_resp
->mode_valid
= 1;
1970 crtc_resp
->mode_valid
= 0;
1973 drm_modeset_unlock_crtc(crtc
);
1978 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1979 const struct drm_file
*file_priv
)
1982 * If user-space hasn't configured the driver to expose the stereo 3D
1983 * modes, don't expose them.
1985 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
1991 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
1993 /* For atomic drivers only state objects are synchronously updated and
1994 * protected by modeset locks, so check those first. */
1995 if (connector
->state
)
1996 return connector
->state
->best_encoder
;
1997 return connector
->encoder
;
2000 /* helper for getconnector and getproperties ioctls */
2001 static int get_properties(struct drm_mode_object
*obj
, bool atomic
,
2002 uint32_t __user
*prop_ptr
, uint64_t __user
*prop_values
,
2003 uint32_t *arg_count_props
)
2008 props_count
= obj
->properties
->count
;
2010 props_count
-= obj
->properties
->atomic_count
;
2012 if ((*arg_count_props
>= props_count
) && props_count
) {
2013 for (i
= 0, copied
= 0; copied
< props_count
; i
++) {
2014 struct drm_property
*prop
= obj
->properties
->properties
[i
];
2017 if ((prop
->flags
& DRM_MODE_PROP_ATOMIC
) && !atomic
)
2020 ret
= drm_object_property_get_value(obj
, prop
, &val
);
2024 if (put_user(prop
->base
.id
, prop_ptr
+ copied
))
2027 if (put_user(val
, prop_values
+ copied
))
2033 *arg_count_props
= props_count
;
2039 * drm_mode_getconnector - get connector configuration
2040 * @dev: drm device for the ioctl
2041 * @data: data pointer for the ioctl
2042 * @file_priv: drm file for the ioctl call
2044 * Construct a connector configuration structure to return to the user.
2046 * Called by the user via ioctl.
2049 * Zero on success, negative errno on failure.
2051 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
2052 struct drm_file
*file_priv
)
2054 struct drm_mode_get_connector
*out_resp
= data
;
2055 struct drm_connector
*connector
;
2056 struct drm_encoder
*encoder
;
2057 struct drm_display_mode
*mode
;
2059 int encoders_count
= 0;
2063 struct drm_mode_modeinfo u_mode
;
2064 struct drm_mode_modeinfo __user
*mode_ptr
;
2065 uint32_t __user
*encoder_ptr
;
2067 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2070 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
2072 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
2074 mutex_lock(&dev
->mode_config
.mutex
);
2076 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
2082 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++)
2083 if (connector
->encoder_ids
[i
] != 0)
2086 if (out_resp
->count_modes
== 0) {
2087 connector
->funcs
->fill_modes(connector
,
2088 dev
->mode_config
.max_width
,
2089 dev
->mode_config
.max_height
);
2092 /* delayed so we get modes regardless of pre-fill_modes state */
2093 list_for_each_entry(mode
, &connector
->modes
, head
)
2094 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2097 out_resp
->connector_id
= connector
->base
.id
;
2098 out_resp
->connector_type
= connector
->connector_type
;
2099 out_resp
->connector_type_id
= connector
->connector_type_id
;
2100 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2101 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2102 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2103 out_resp
->connection
= connector
->status
;
2105 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2106 encoder
= drm_connector_get_encoder(connector
);
2108 out_resp
->encoder_id
= encoder
->base
.id
;
2110 out_resp
->encoder_id
= 0;
2113 * This ioctl is called twice, once to determine how much space is
2114 * needed, and the 2nd time to fill it.
2116 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2118 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2119 list_for_each_entry(mode
, &connector
->modes
, head
) {
2120 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2123 drm_mode_convert_to_umode(&u_mode
, mode
);
2124 if (copy_to_user(mode_ptr
+ copied
,
2125 &u_mode
, sizeof(u_mode
))) {
2132 out_resp
->count_modes
= mode_count
;
2134 ret
= get_properties(&connector
->base
, file_priv
->atomic
,
2135 (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
),
2136 (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
),
2137 &out_resp
->count_props
);
2141 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2143 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2144 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2145 if (connector
->encoder_ids
[i
] != 0) {
2146 if (put_user(connector
->encoder_ids
[i
],
2147 encoder_ptr
+ copied
)) {
2155 out_resp
->count_encoders
= encoders_count
;
2158 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2161 mutex_unlock(&dev
->mode_config
.mutex
);
2166 static struct drm_crtc
*drm_encoder_get_crtc(struct drm_encoder
*encoder
)
2168 struct drm_connector
*connector
;
2169 struct drm_device
*dev
= encoder
->dev
;
2170 bool uses_atomic
= false;
2172 /* For atomic drivers only state objects are synchronously updated and
2173 * protected by modeset locks, so check those first. */
2174 drm_for_each_connector(connector
, dev
) {
2175 if (!connector
->state
)
2180 if (connector
->state
->best_encoder
!= encoder
)
2183 return connector
->state
->crtc
;
2186 /* Don't return stale data (e.g. pending async disable). */
2190 return encoder
->crtc
;
2194 * drm_mode_getencoder - get encoder configuration
2195 * @dev: drm device for the ioctl
2196 * @data: data pointer for the ioctl
2197 * @file_priv: drm file for the ioctl call
2199 * Construct a encoder configuration structure to return to the user.
2201 * Called by the user via ioctl.
2204 * Zero on success, negative errno on failure.
2206 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2207 struct drm_file
*file_priv
)
2209 struct drm_mode_get_encoder
*enc_resp
= data
;
2210 struct drm_encoder
*encoder
;
2211 struct drm_crtc
*crtc
;
2213 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2216 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2220 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2221 crtc
= drm_encoder_get_crtc(encoder
);
2223 enc_resp
->crtc_id
= crtc
->base
.id
;
2225 enc_resp
->crtc_id
= 0;
2226 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2228 enc_resp
->encoder_type
= encoder
->encoder_type
;
2229 enc_resp
->encoder_id
= encoder
->base
.id
;
2230 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2231 enc_resp
->possible_clones
= encoder
->possible_clones
;
2237 * drm_mode_getplane_res - enumerate all plane resources
2240 * @file_priv: DRM file info
2242 * Construct a list of plane ids to return to the user.
2244 * Called by the user via ioctl.
2247 * Zero on success, negative errno on failure.
2249 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2250 struct drm_file
*file_priv
)
2252 struct drm_mode_get_plane_res
*plane_resp
= data
;
2253 struct drm_mode_config
*config
;
2254 struct drm_plane
*plane
;
2255 uint32_t __user
*plane_ptr
;
2257 unsigned num_planes
;
2259 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2262 config
= &dev
->mode_config
;
2264 if (file_priv
->universal_planes
)
2265 num_planes
= config
->num_total_plane
;
2267 num_planes
= config
->num_overlay_plane
;
2270 * This ioctl is called twice, once to determine how much space is
2271 * needed, and the 2nd time to fill it.
2274 (plane_resp
->count_planes
>= num_planes
)) {
2275 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2277 /* Plane lists are invariant, no locking needed. */
2278 drm_for_each_plane(plane
, dev
) {
2280 * Unless userspace set the 'universal planes'
2281 * capability bit, only advertise overlays.
2283 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2284 !file_priv
->universal_planes
)
2287 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2292 plane_resp
->count_planes
= num_planes
;
2298 * drm_mode_getplane - get plane configuration
2301 * @file_priv: DRM file info
2303 * Construct a plane configuration structure to return to the user.
2305 * Called by the user via ioctl.
2308 * Zero on success, negative errno on failure.
2310 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2311 struct drm_file
*file_priv
)
2313 struct drm_mode_get_plane
*plane_resp
= data
;
2314 struct drm_plane
*plane
;
2315 uint32_t __user
*format_ptr
;
2317 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2320 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2324 drm_modeset_lock(&plane
->mutex
, NULL
);
2326 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2328 plane_resp
->crtc_id
= 0;
2331 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2333 plane_resp
->fb_id
= 0;
2334 drm_modeset_unlock(&plane
->mutex
);
2336 plane_resp
->plane_id
= plane
->base
.id
;
2337 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2338 plane_resp
->gamma_size
= 0;
2341 * This ioctl is called twice, once to determine how much space is
2342 * needed, and the 2nd time to fill it.
2344 if (plane
->format_count
&&
2345 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2346 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2347 if (copy_to_user(format_ptr
,
2348 plane
->format_types
,
2349 sizeof(uint32_t) * plane
->format_count
)) {
2353 plane_resp
->count_format_types
= plane
->format_count
;
2359 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2360 * @plane: plane to check for format support
2361 * @format: the pixel format
2364 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2367 int drm_plane_check_pixel_format(const struct drm_plane
*plane
, u32 format
)
2371 for (i
= 0; i
< plane
->format_count
; i
++) {
2372 if (format
== plane
->format_types
[i
])
2379 static int check_src_coords(uint32_t src_x
, uint32_t src_y
,
2380 uint32_t src_w
, uint32_t src_h
,
2381 const struct drm_framebuffer
*fb
)
2383 unsigned int fb_width
, fb_height
;
2385 fb_width
= fb
->width
<< 16;
2386 fb_height
= fb
->height
<< 16;
2388 /* Make sure source coordinates are inside the fb. */
2389 if (src_w
> fb_width
||
2390 src_x
> fb_width
- src_w
||
2391 src_h
> fb_height
||
2392 src_y
> fb_height
- src_h
) {
2393 DRM_DEBUG_KMS("Invalid source coordinates "
2394 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2395 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2396 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2397 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2398 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2406 * setplane_internal - setplane handler for internal callers
2408 * Note that we assume an extra reference has already been taken on fb. If the
2409 * update fails, this reference will be dropped before return; if it succeeds,
2410 * the previous framebuffer (if any) will be unreferenced instead.
2412 * src_{x,y,w,h} are provided in 16.16 fixed point format
2414 static int __setplane_internal(struct drm_plane
*plane
,
2415 struct drm_crtc
*crtc
,
2416 struct drm_framebuffer
*fb
,
2417 int32_t crtc_x
, int32_t crtc_y
,
2418 uint32_t crtc_w
, uint32_t crtc_h
,
2419 /* src_{x,y,w,h} values are 16.16 fixed point */
2420 uint32_t src_x
, uint32_t src_y
,
2421 uint32_t src_w
, uint32_t src_h
)
2425 /* No fb means shut it down */
2427 plane
->old_fb
= plane
->fb
;
2428 ret
= plane
->funcs
->disable_plane(plane
);
2433 plane
->old_fb
= NULL
;
2438 /* Check whether this plane is usable on this CRTC */
2439 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2440 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2445 /* Check whether this plane supports the fb pixel format. */
2446 ret
= drm_plane_check_pixel_format(plane
, fb
->pixel_format
);
2448 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2449 drm_get_format_name(fb
->pixel_format
));
2453 /* Give drivers some help against integer overflows */
2454 if (crtc_w
> INT_MAX
||
2455 crtc_x
> INT_MAX
- (int32_t) crtc_w
||
2457 crtc_y
> INT_MAX
- (int32_t) crtc_h
) {
2458 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2459 crtc_w
, crtc_h
, crtc_x
, crtc_y
);
2464 ret
= check_src_coords(src_x
, src_y
, src_w
, src_h
, fb
);
2468 plane
->old_fb
= plane
->fb
;
2469 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2470 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2471 src_x
, src_y
, src_w
, src_h
);
2477 plane
->old_fb
= NULL
;
2482 drm_framebuffer_unreference(fb
);
2484 drm_framebuffer_unreference(plane
->old_fb
);
2485 plane
->old_fb
= NULL
;
2490 static int setplane_internal(struct drm_plane
*plane
,
2491 struct drm_crtc
*crtc
,
2492 struct drm_framebuffer
*fb
,
2493 int32_t crtc_x
, int32_t crtc_y
,
2494 uint32_t crtc_w
, uint32_t crtc_h
,
2495 /* src_{x,y,w,h} values are 16.16 fixed point */
2496 uint32_t src_x
, uint32_t src_y
,
2497 uint32_t src_w
, uint32_t src_h
)
2501 drm_modeset_lock_all(plane
->dev
);
2502 ret
= __setplane_internal(plane
, crtc
, fb
,
2503 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2504 src_x
, src_y
, src_w
, src_h
);
2505 drm_modeset_unlock_all(plane
->dev
);
2511 * drm_mode_setplane - configure a plane's configuration
2513 * @data: ioctl data*
2514 * @file_priv: DRM file info
2516 * Set plane configuration, including placement, fb, scaling, and other factors.
2517 * Or pass a NULL fb to disable (planes may be disabled without providing a
2521 * Zero on success, negative errno on failure.
2523 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2524 struct drm_file
*file_priv
)
2526 struct drm_mode_set_plane
*plane_req
= data
;
2527 struct drm_plane
*plane
;
2528 struct drm_crtc
*crtc
= NULL
;
2529 struct drm_framebuffer
*fb
= NULL
;
2531 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2535 * First, find the plane, crtc, and fb objects. If not available,
2536 * we don't bother to call the driver.
2538 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
2540 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2541 plane_req
->plane_id
);
2545 if (plane_req
->fb_id
) {
2546 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2548 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2553 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
2555 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2556 plane_req
->crtc_id
);
2562 * setplane_internal will take care of deref'ing either the old or new
2563 * framebuffer depending on success.
2565 return setplane_internal(plane
, crtc
, fb
,
2566 plane_req
->crtc_x
, plane_req
->crtc_y
,
2567 plane_req
->crtc_w
, plane_req
->crtc_h
,
2568 plane_req
->src_x
, plane_req
->src_y
,
2569 plane_req
->src_w
, plane_req
->src_h
);
2573 * drm_mode_set_config_internal - helper to call ->set_config
2574 * @set: modeset config to set
2576 * This is a little helper to wrap internal calls to the ->set_config driver
2577 * interface. The only thing it adds is correct refcounting dance.
2580 * Zero on success, negative errno on failure.
2582 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2584 struct drm_crtc
*crtc
= set
->crtc
;
2585 struct drm_framebuffer
*fb
;
2586 struct drm_crtc
*tmp
;
2590 * NOTE: ->set_config can also disable other crtcs (if we steal all
2591 * connectors from it), hence we need to refcount the fbs across all
2592 * crtcs. Atomic modeset will have saner semantics ...
2594 drm_for_each_crtc(tmp
, crtc
->dev
)
2595 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2599 ret
= crtc
->funcs
->set_config(set
);
2601 crtc
->primary
->crtc
= crtc
;
2602 crtc
->primary
->fb
= fb
;
2605 drm_for_each_crtc(tmp
, crtc
->dev
) {
2606 if (tmp
->primary
->fb
)
2607 drm_framebuffer_reference(tmp
->primary
->fb
);
2608 if (tmp
->primary
->old_fb
)
2609 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2610 tmp
->primary
->old_fb
= NULL
;
2615 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2618 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2619 * @mode: mode to query
2620 * @hdisplay: hdisplay value to fill in
2621 * @vdisplay: vdisplay value to fill in
2623 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2624 * the appropriate layout.
2626 void drm_crtc_get_hv_timing(const struct drm_display_mode
*mode
,
2627 int *hdisplay
, int *vdisplay
)
2629 struct drm_display_mode adjusted
;
2631 drm_mode_copy(&adjusted
, mode
);
2632 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE_ONLY
);
2633 *hdisplay
= adjusted
.crtc_hdisplay
;
2634 *vdisplay
= adjusted
.crtc_vdisplay
;
2636 EXPORT_SYMBOL(drm_crtc_get_hv_timing
);
2639 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2641 * @crtc: CRTC that framebuffer will be displayed on
2644 * @mode: mode that framebuffer will be displayed under
2645 * @fb: framebuffer to check size of
2647 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2649 const struct drm_display_mode
*mode
,
2650 const struct drm_framebuffer
*fb
)
2653 int hdisplay
, vdisplay
;
2655 drm_crtc_get_hv_timing(mode
, &hdisplay
, &vdisplay
);
2658 crtc
->primary
->state
->rotation
& (BIT(DRM_ROTATE_90
) |
2659 BIT(DRM_ROTATE_270
)))
2660 swap(hdisplay
, vdisplay
);
2662 return check_src_coords(x
<< 16, y
<< 16,
2663 hdisplay
<< 16, vdisplay
<< 16, fb
);
2665 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2668 * drm_mode_setcrtc - set CRTC configuration
2669 * @dev: drm device for the ioctl
2670 * @data: data pointer for the ioctl
2671 * @file_priv: drm file for the ioctl call
2673 * Build a new CRTC configuration based on user request.
2675 * Called by the user via ioctl.
2678 * Zero on success, negative errno on failure.
2680 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2681 struct drm_file
*file_priv
)
2683 struct drm_mode_config
*config
= &dev
->mode_config
;
2684 struct drm_mode_crtc
*crtc_req
= data
;
2685 struct drm_crtc
*crtc
;
2686 struct drm_connector
**connector_set
= NULL
, *connector
;
2687 struct drm_framebuffer
*fb
= NULL
;
2688 struct drm_display_mode
*mode
= NULL
;
2689 struct drm_mode_set set
;
2690 uint32_t __user
*set_connectors_ptr
;
2694 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2698 * Universal plane src offsets are only 16.16, prevent havoc for
2699 * drivers using universal plane code internally.
2701 if (crtc_req
->x
& 0xffff0000 || crtc_req
->y
& 0xffff0000)
2704 drm_modeset_lock_all(dev
);
2705 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2707 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2711 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc
->base
.id
, crtc
->name
);
2713 if (crtc_req
->mode_valid
) {
2714 /* If we have a mode we need a framebuffer. */
2715 /* If we pass -1, set the mode with the currently bound fb */
2716 if (crtc_req
->fb_id
== -1) {
2717 if (!crtc
->primary
->fb
) {
2718 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2722 fb
= crtc
->primary
->fb
;
2723 /* Make refcounting symmetric with the lookup path. */
2724 drm_framebuffer_reference(fb
);
2726 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2728 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2735 mode
= drm_mode_create(dev
);
2741 ret
= drm_mode_convert_umode(mode
, &crtc_req
->mode
);
2743 DRM_DEBUG_KMS("Invalid mode\n");
2747 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2750 * Check whether the primary plane supports the fb pixel format.
2751 * Drivers not implementing the universal planes API use a
2752 * default formats list provided by the DRM core which doesn't
2753 * match real hardware capabilities. Skip the check in that
2756 if (!crtc
->primary
->format_default
) {
2757 ret
= drm_plane_check_pixel_format(crtc
->primary
,
2760 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2761 drm_get_format_name(fb
->pixel_format
));
2766 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2773 if (crtc_req
->count_connectors
== 0 && mode
) {
2774 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2779 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2780 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2781 crtc_req
->count_connectors
);
2786 if (crtc_req
->count_connectors
> 0) {
2789 /* Avoid unbounded kernel memory allocation */
2790 if (crtc_req
->count_connectors
> config
->num_connector
) {
2795 connector_set
= kmalloc_array(crtc_req
->count_connectors
,
2796 sizeof(struct drm_connector
*),
2798 if (!connector_set
) {
2803 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2804 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2805 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2810 connector
= drm_connector_find(dev
, out_id
);
2812 DRM_DEBUG_KMS("Connector id %d unknown\n",
2817 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2821 connector_set
[i
] = connector
;
2826 set
.x
= crtc_req
->x
;
2827 set
.y
= crtc_req
->y
;
2829 set
.connectors
= connector_set
;
2830 set
.num_connectors
= crtc_req
->count_connectors
;
2832 ret
= drm_mode_set_config_internal(&set
);
2836 drm_framebuffer_unreference(fb
);
2838 kfree(connector_set
);
2839 drm_mode_destroy(dev
, mode
);
2840 drm_modeset_unlock_all(dev
);
2845 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2846 * universal plane handler call
2847 * @crtc: crtc to update cursor for
2848 * @req: data pointer for the ioctl
2849 * @file_priv: drm file for the ioctl call
2851 * Legacy cursor ioctl's work directly with driver buffer handles. To
2852 * translate legacy ioctl calls into universal plane handler calls, we need to
2853 * wrap the native buffer handle in a drm_framebuffer.
2855 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2856 * buffer with a pitch of 4*width; the universal plane interface should be used
2857 * directly in cases where the hardware can support other buffer settings and
2858 * userspace wants to make use of these capabilities.
2861 * Zero on success, negative errno on failure.
2863 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2864 struct drm_mode_cursor2
*req
,
2865 struct drm_file
*file_priv
)
2867 struct drm_device
*dev
= crtc
->dev
;
2868 struct drm_framebuffer
*fb
= NULL
;
2869 struct drm_mode_fb_cmd2 fbreq
= {
2870 .width
= req
->width
,
2871 .height
= req
->height
,
2872 .pixel_format
= DRM_FORMAT_ARGB8888
,
2873 .pitches
= { req
->width
* 4 },
2874 .handles
= { req
->handle
},
2876 int32_t crtc_x
, crtc_y
;
2877 uint32_t crtc_w
= 0, crtc_h
= 0;
2878 uint32_t src_w
= 0, src_h
= 0;
2881 BUG_ON(!crtc
->cursor
);
2882 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2885 * Obtain fb we'll be using (either new or existing) and take an extra
2886 * reference to it if fb != null. setplane will take care of dropping
2887 * the reference if the plane update fails.
2889 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2891 fb
= internal_framebuffer_create(dev
, &fbreq
, file_priv
);
2893 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2900 fb
= crtc
->cursor
->fb
;
2902 drm_framebuffer_reference(fb
);
2905 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2909 crtc_x
= crtc
->cursor_x
;
2910 crtc_y
= crtc
->cursor_y
;
2915 crtc_h
= fb
->height
;
2916 src_w
= fb
->width
<< 16;
2917 src_h
= fb
->height
<< 16;
2921 * setplane_internal will take care of deref'ing either the old or new
2922 * framebuffer depending on success.
2924 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2925 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2926 0, 0, src_w
, src_h
);
2928 /* Update successful; save new cursor position, if necessary */
2929 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2930 crtc
->cursor_x
= req
->x
;
2931 crtc
->cursor_y
= req
->y
;
2937 static int drm_mode_cursor_common(struct drm_device
*dev
,
2938 struct drm_mode_cursor2
*req
,
2939 struct drm_file
*file_priv
)
2941 struct drm_crtc
*crtc
;
2944 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2947 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2950 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2952 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2957 * If this crtc has a universal cursor plane, call that plane's update
2958 * handler rather than using legacy cursor handlers.
2960 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
2962 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2966 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2967 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2971 /* Turns off the cursor if handle is 0 */
2972 if (crtc
->funcs
->cursor_set2
)
2973 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2974 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2976 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2977 req
->width
, req
->height
);
2980 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2981 if (crtc
->funcs
->cursor_move
) {
2982 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
2989 drm_modeset_unlock_crtc(crtc
);
2997 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2998 * @dev: drm device for the ioctl
2999 * @data: data pointer for the ioctl
3000 * @file_priv: drm file for the ioctl call
3002 * Set the cursor configuration based on user request.
3004 * Called by the user via ioctl.
3007 * Zero on success, negative errno on failure.
3009 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
3010 void *data
, struct drm_file
*file_priv
)
3012 struct drm_mode_cursor
*req
= data
;
3013 struct drm_mode_cursor2 new_req
;
3015 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
3016 new_req
.hot_x
= new_req
.hot_y
= 0;
3018 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
3022 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3023 * @dev: drm device for the ioctl
3024 * @data: data pointer for the ioctl
3025 * @file_priv: drm file for the ioctl call
3027 * Set the cursor configuration based on user request. This implements the 2nd
3028 * version of the cursor ioctl, which allows userspace to additionally specify
3029 * the hotspot of the pointer.
3031 * Called by the user via ioctl.
3034 * Zero on success, negative errno on failure.
3036 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
3037 void *data
, struct drm_file
*file_priv
)
3039 struct drm_mode_cursor2
*req
= data
;
3041 return drm_mode_cursor_common(dev
, req
, file_priv
);
3045 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3046 * @bpp: bits per pixels
3047 * @depth: bit depth per pixel
3049 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3050 * Useful in fbdev emulation code, since that deals in those values.
3052 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
3058 fmt
= DRM_FORMAT_C8
;
3062 fmt
= DRM_FORMAT_XRGB1555
;
3064 fmt
= DRM_FORMAT_RGB565
;
3067 fmt
= DRM_FORMAT_RGB888
;
3071 fmt
= DRM_FORMAT_XRGB8888
;
3072 else if (depth
== 30)
3073 fmt
= DRM_FORMAT_XRGB2101010
;
3075 fmt
= DRM_FORMAT_ARGB8888
;
3078 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3079 fmt
= DRM_FORMAT_XRGB8888
;
3085 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
3088 * drm_mode_addfb - add an FB to the graphics configuration
3089 * @dev: drm device for the ioctl
3090 * @data: data pointer for the ioctl
3091 * @file_priv: drm file for the ioctl call
3093 * Add a new FB to the specified CRTC, given a user request. This is the
3094 * original addfb ioctl which only supported RGB formats.
3096 * Called by the user via ioctl.
3099 * Zero on success, negative errno on failure.
3101 int drm_mode_addfb(struct drm_device
*dev
,
3102 void *data
, struct drm_file
*file_priv
)
3104 struct drm_mode_fb_cmd
*or = data
;
3105 struct drm_mode_fb_cmd2 r
= {};
3108 /* convert to new format and call new ioctl */
3109 r
.fb_id
= or->fb_id
;
3110 r
.width
= or->width
;
3111 r
.height
= or->height
;
3112 r
.pitches
[0] = or->pitch
;
3113 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
3114 r
.handles
[0] = or->handle
;
3116 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
3120 or->fb_id
= r
.fb_id
;
3125 static int format_check(const struct drm_mode_fb_cmd2
*r
)
3127 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3131 case DRM_FORMAT_RGB332
:
3132 case DRM_FORMAT_BGR233
:
3133 case DRM_FORMAT_XRGB4444
:
3134 case DRM_FORMAT_XBGR4444
:
3135 case DRM_FORMAT_RGBX4444
:
3136 case DRM_FORMAT_BGRX4444
:
3137 case DRM_FORMAT_ARGB4444
:
3138 case DRM_FORMAT_ABGR4444
:
3139 case DRM_FORMAT_RGBA4444
:
3140 case DRM_FORMAT_BGRA4444
:
3141 case DRM_FORMAT_XRGB1555
:
3142 case DRM_FORMAT_XBGR1555
:
3143 case DRM_FORMAT_RGBX5551
:
3144 case DRM_FORMAT_BGRX5551
:
3145 case DRM_FORMAT_ARGB1555
:
3146 case DRM_FORMAT_ABGR1555
:
3147 case DRM_FORMAT_RGBA5551
:
3148 case DRM_FORMAT_BGRA5551
:
3149 case DRM_FORMAT_RGB565
:
3150 case DRM_FORMAT_BGR565
:
3151 case DRM_FORMAT_RGB888
:
3152 case DRM_FORMAT_BGR888
:
3153 case DRM_FORMAT_XRGB8888
:
3154 case DRM_FORMAT_XBGR8888
:
3155 case DRM_FORMAT_RGBX8888
:
3156 case DRM_FORMAT_BGRX8888
:
3157 case DRM_FORMAT_ARGB8888
:
3158 case DRM_FORMAT_ABGR8888
:
3159 case DRM_FORMAT_RGBA8888
:
3160 case DRM_FORMAT_BGRA8888
:
3161 case DRM_FORMAT_XRGB2101010
:
3162 case DRM_FORMAT_XBGR2101010
:
3163 case DRM_FORMAT_RGBX1010102
:
3164 case DRM_FORMAT_BGRX1010102
:
3165 case DRM_FORMAT_ARGB2101010
:
3166 case DRM_FORMAT_ABGR2101010
:
3167 case DRM_FORMAT_RGBA1010102
:
3168 case DRM_FORMAT_BGRA1010102
:
3169 case DRM_FORMAT_YUYV
:
3170 case DRM_FORMAT_YVYU
:
3171 case DRM_FORMAT_UYVY
:
3172 case DRM_FORMAT_VYUY
:
3173 case DRM_FORMAT_AYUV
:
3174 case DRM_FORMAT_NV12
:
3175 case DRM_FORMAT_NV21
:
3176 case DRM_FORMAT_NV16
:
3177 case DRM_FORMAT_NV61
:
3178 case DRM_FORMAT_NV24
:
3179 case DRM_FORMAT_NV42
:
3180 case DRM_FORMAT_YUV410
:
3181 case DRM_FORMAT_YVU410
:
3182 case DRM_FORMAT_YUV411
:
3183 case DRM_FORMAT_YVU411
:
3184 case DRM_FORMAT_YUV420
:
3185 case DRM_FORMAT_YVU420
:
3186 case DRM_FORMAT_YUV422
:
3187 case DRM_FORMAT_YVU422
:
3188 case DRM_FORMAT_YUV444
:
3189 case DRM_FORMAT_YVU444
:
3192 DRM_DEBUG_KMS("invalid pixel format %s\n",
3193 drm_get_format_name(r
->pixel_format
));
3198 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3200 int ret
, hsub
, vsub
, num_planes
, i
;
3202 ret
= format_check(r
);
3204 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3205 drm_get_format_name(r
->pixel_format
));
3209 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3210 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3211 num_planes
= drm_format_num_planes(r
->pixel_format
);
3213 if (r
->width
== 0 || r
->width
% hsub
) {
3214 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3218 if (r
->height
== 0 || r
->height
% vsub
) {
3219 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3223 for (i
= 0; i
< num_planes
; i
++) {
3224 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3225 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3226 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3228 if (!r
->handles
[i
]) {
3229 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3233 if ((uint64_t) width
* cpp
> UINT_MAX
)
3236 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3239 if (r
->pitches
[i
] < width
* cpp
) {
3240 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3244 if (r
->modifier
[i
] && !(r
->flags
& DRM_MODE_FB_MODIFIERS
)) {
3245 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3250 /* modifier specific checks: */
3251 switch (r
->modifier
[i
]) {
3252 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE
:
3253 /* NOTE: the pitch restriction may be lifted later if it turns
3254 * out that no hw has this restriction:
3256 if (r
->pixel_format
!= DRM_FORMAT_NV12
||
3257 width
% 128 || height
% 32 ||
3258 r
->pitches
[i
] % 128) {
3259 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i
);
3269 for (i
= num_planes
; i
< 4; i
++) {
3270 if (r
->modifier
[i
]) {
3271 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i
);
3275 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3276 if (!(r
->flags
& DRM_MODE_FB_MODIFIERS
))
3279 if (r
->handles
[i
]) {
3280 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i
);
3284 if (r
->pitches
[i
]) {
3285 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i
);
3289 if (r
->offsets
[i
]) {
3290 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i
);
3298 static struct drm_framebuffer
*
3299 internal_framebuffer_create(struct drm_device
*dev
,
3300 const struct drm_mode_fb_cmd2
*r
,
3301 struct drm_file
*file_priv
)
3303 struct drm_mode_config
*config
= &dev
->mode_config
;
3304 struct drm_framebuffer
*fb
;
3307 if (r
->flags
& ~(DRM_MODE_FB_INTERLACED
| DRM_MODE_FB_MODIFIERS
)) {
3308 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3309 return ERR_PTR(-EINVAL
);
3312 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3313 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3314 r
->width
, config
->min_width
, config
->max_width
);
3315 return ERR_PTR(-EINVAL
);
3317 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3318 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3319 r
->height
, config
->min_height
, config
->max_height
);
3320 return ERR_PTR(-EINVAL
);
3323 if (r
->flags
& DRM_MODE_FB_MODIFIERS
&&
3324 !dev
->mode_config
.allow_fb_modifiers
) {
3325 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3326 return ERR_PTR(-EINVAL
);
3329 ret
= framebuffer_check(r
);
3331 return ERR_PTR(ret
);
3333 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3335 DRM_DEBUG_KMS("could not create framebuffer\n");
3343 * drm_mode_addfb2 - add an FB to the graphics configuration
3344 * @dev: drm device for the ioctl
3345 * @data: data pointer for the ioctl
3346 * @file_priv: drm file for the ioctl call
3348 * Add a new FB to the specified CRTC, given a user request with format. This is
3349 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3350 * and uses fourcc codes as pixel format specifiers.
3352 * Called by the user via ioctl.
3355 * Zero on success, negative errno on failure.
3357 int drm_mode_addfb2(struct drm_device
*dev
,
3358 void *data
, struct drm_file
*file_priv
)
3360 struct drm_mode_fb_cmd2
*r
= data
;
3361 struct drm_framebuffer
*fb
;
3363 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3366 fb
= internal_framebuffer_create(dev
, r
, file_priv
);
3370 /* Transfer ownership to the filp for reaping on close */
3372 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3373 mutex_lock(&file_priv
->fbs_lock
);
3374 r
->fb_id
= fb
->base
.id
;
3375 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3376 mutex_unlock(&file_priv
->fbs_lock
);
3382 * drm_mode_rmfb - remove an FB from the configuration
3383 * @dev: drm device for the ioctl
3384 * @data: data pointer for the ioctl
3385 * @file_priv: drm file for the ioctl call
3387 * Remove the FB specified by the user.
3389 * Called by the user via ioctl.
3392 * Zero on success, negative errno on failure.
3394 int drm_mode_rmfb(struct drm_device
*dev
,
3395 void *data
, struct drm_file
*file_priv
)
3397 struct drm_framebuffer
*fb
= NULL
;
3398 struct drm_framebuffer
*fbl
= NULL
;
3399 uint32_t *id
= data
;
3402 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3405 mutex_lock(&file_priv
->fbs_lock
);
3406 mutex_lock(&dev
->mode_config
.fb_lock
);
3407 fb
= __drm_framebuffer_lookup(dev
, *id
);
3411 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3417 list_del_init(&fb
->filp_head
);
3418 mutex_unlock(&dev
->mode_config
.fb_lock
);
3419 mutex_unlock(&file_priv
->fbs_lock
);
3421 drm_framebuffer_unreference(fb
);
3426 mutex_unlock(&dev
->mode_config
.fb_lock
);
3427 mutex_unlock(&file_priv
->fbs_lock
);
3433 * drm_mode_getfb - get FB info
3434 * @dev: drm device for the ioctl
3435 * @data: data pointer for the ioctl
3436 * @file_priv: drm file for the ioctl call
3438 * Lookup the FB given its ID and return info about it.
3440 * Called by the user via ioctl.
3443 * Zero on success, negative errno on failure.
3445 int drm_mode_getfb(struct drm_device
*dev
,
3446 void *data
, struct drm_file
*file_priv
)
3448 struct drm_mode_fb_cmd
*r
= data
;
3449 struct drm_framebuffer
*fb
;
3452 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3455 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3459 r
->height
= fb
->height
;
3460 r
->width
= fb
->width
;
3461 r
->depth
= fb
->depth
;
3462 r
->bpp
= fb
->bits_per_pixel
;
3463 r
->pitch
= fb
->pitches
[0];
3464 if (fb
->funcs
->create_handle
) {
3465 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3466 drm_is_control_client(file_priv
)) {
3467 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3470 /* GET_FB() is an unprivileged ioctl so we must not
3471 * return a buffer-handle to non-master processes! For
3472 * backwards-compatibility reasons, we cannot make
3473 * GET_FB() privileged, so just return an invalid handle
3474 * for non-masters. */
3482 drm_framebuffer_unreference(fb
);
3488 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3489 * @dev: drm device for the ioctl
3490 * @data: data pointer for the ioctl
3491 * @file_priv: drm file for the ioctl call
3493 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3494 * rectangle list. Generic userspace which does frontbuffer rendering must call
3495 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3496 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3498 * Modesetting drivers which always update the frontbuffer do not need to
3499 * implement the corresponding ->dirty framebuffer callback.
3501 * Called by the user via ioctl.
3504 * Zero on success, negative errno on failure.
3506 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3507 void *data
, struct drm_file
*file_priv
)
3509 struct drm_clip_rect __user
*clips_ptr
;
3510 struct drm_clip_rect
*clips
= NULL
;
3511 struct drm_mode_fb_dirty_cmd
*r
= data
;
3512 struct drm_framebuffer
*fb
;
3517 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3520 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3524 num_clips
= r
->num_clips
;
3525 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3527 if (!num_clips
!= !clips_ptr
) {
3532 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3534 /* If userspace annotates copy, clips must come in pairs */
3535 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3540 if (num_clips
&& clips_ptr
) {
3541 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3545 clips
= kcalloc(num_clips
, sizeof(*clips
), GFP_KERNEL
);
3551 ret
= copy_from_user(clips
, clips_ptr
,
3552 num_clips
* sizeof(*clips
));
3559 if (fb
->funcs
->dirty
) {
3560 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3569 drm_framebuffer_unreference(fb
);
3576 * drm_fb_release - remove and free the FBs on this file
3577 * @priv: drm file for the ioctl
3579 * Destroy all the FBs associated with @filp.
3581 * Called by the user via ioctl.
3584 * Zero on success, negative errno on failure.
3586 void drm_fb_release(struct drm_file
*priv
)
3588 struct drm_framebuffer
*fb
, *tfb
;
3591 * When the file gets released that means no one else can access the fb
3592 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3593 * avoid upsetting lockdep since the universal cursor code adds a
3594 * framebuffer while holding mutex locks.
3596 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3597 * locks is impossible here since no one else but this function can get
3600 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3601 list_del_init(&fb
->filp_head
);
3603 /* This drops the fpriv->fbs reference. */
3604 drm_framebuffer_unreference(fb
);
3609 * drm_property_create - create a new property type
3611 * @flags: flags specifying the property type
3612 * @name: name of the property
3613 * @num_values: number of pre-defined values
3615 * This creates a new generic drm property which can then be attached to a drm
3616 * object with drm_object_attach_property. The returned property object must be
3617 * freed with drm_property_destroy.
3619 * Note that the DRM core keeps a per-device list of properties and that, if
3620 * drm_mode_config_cleanup() is called, it will destroy all properties created
3624 * A pointer to the newly created property on success, NULL on failure.
3626 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3627 const char *name
, int num_values
)
3629 struct drm_property
*property
= NULL
;
3632 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3636 property
->dev
= dev
;
3639 property
->values
= kcalloc(num_values
, sizeof(uint64_t),
3641 if (!property
->values
)
3645 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3649 property
->flags
= flags
;
3650 property
->num_values
= num_values
;
3651 INIT_LIST_HEAD(&property
->enum_list
);
3654 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3655 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3658 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3660 WARN_ON(!drm_property_type_valid(property
));
3664 kfree(property
->values
);
3668 EXPORT_SYMBOL(drm_property_create
);
3671 * drm_property_create_enum - create a new enumeration property type
3673 * @flags: flags specifying the property type
3674 * @name: name of the property
3675 * @props: enumeration lists with property values
3676 * @num_values: number of pre-defined values
3678 * This creates a new generic drm property which can then be attached to a drm
3679 * object with drm_object_attach_property. The returned property object must be
3680 * freed with drm_property_destroy.
3682 * Userspace is only allowed to set one of the predefined values for enumeration
3686 * A pointer to the newly created property on success, NULL on failure.
3688 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3690 const struct drm_prop_enum_list
*props
,
3693 struct drm_property
*property
;
3696 flags
|= DRM_MODE_PROP_ENUM
;
3698 property
= drm_property_create(dev
, flags
, name
, num_values
);
3702 for (i
= 0; i
< num_values
; i
++) {
3703 ret
= drm_property_add_enum(property
, i
,
3707 drm_property_destroy(dev
, property
);
3714 EXPORT_SYMBOL(drm_property_create_enum
);
3717 * drm_property_create_bitmask - create a new bitmask property type
3719 * @flags: flags specifying the property type
3720 * @name: name of the property
3721 * @props: enumeration lists with property bitflags
3722 * @num_props: size of the @props array
3723 * @supported_bits: bitmask of all supported enumeration values
3725 * This creates a new bitmask drm property which can then be attached to a drm
3726 * object with drm_object_attach_property. The returned property object must be
3727 * freed with drm_property_destroy.
3729 * Compared to plain enumeration properties userspace is allowed to set any
3730 * or'ed together combination of the predefined property bitflag values
3733 * A pointer to the newly created property on success, NULL on failure.
3735 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3736 int flags
, const char *name
,
3737 const struct drm_prop_enum_list
*props
,
3739 uint64_t supported_bits
)
3741 struct drm_property
*property
;
3742 int i
, ret
, index
= 0;
3743 int num_values
= hweight64(supported_bits
);
3745 flags
|= DRM_MODE_PROP_BITMASK
;
3747 property
= drm_property_create(dev
, flags
, name
, num_values
);
3750 for (i
= 0; i
< num_props
; i
++) {
3751 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3754 if (WARN_ON(index
>= num_values
)) {
3755 drm_property_destroy(dev
, property
);
3759 ret
= drm_property_add_enum(property
, index
++,
3763 drm_property_destroy(dev
, property
);
3770 EXPORT_SYMBOL(drm_property_create_bitmask
);
3772 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3773 int flags
, const char *name
,
3774 uint64_t min
, uint64_t max
)
3776 struct drm_property
*property
;
3778 property
= drm_property_create(dev
, flags
, name
, 2);
3782 property
->values
[0] = min
;
3783 property
->values
[1] = max
;
3789 * drm_property_create_range - create a new unsigned ranged property type
3791 * @flags: flags specifying the property type
3792 * @name: name of the property
3793 * @min: minimum value of the property
3794 * @max: maximum value of the property
3796 * This creates a new generic drm property which can then be attached to a drm
3797 * object with drm_object_attach_property. The returned property object must be
3798 * freed with drm_property_destroy.
3800 * Userspace is allowed to set any unsigned integer value in the (min, max)
3804 * A pointer to the newly created property on success, NULL on failure.
3806 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3808 uint64_t min
, uint64_t max
)
3810 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3813 EXPORT_SYMBOL(drm_property_create_range
);
3816 * drm_property_create_signed_range - create a new signed ranged property type
3818 * @flags: flags specifying the property type
3819 * @name: name of the property
3820 * @min: minimum value of the property
3821 * @max: maximum value of the property
3823 * This creates a new generic drm property which can then be attached to a drm
3824 * object with drm_object_attach_property. The returned property object must be
3825 * freed with drm_property_destroy.
3827 * Userspace is allowed to set any signed integer value in the (min, max)
3831 * A pointer to the newly created property on success, NULL on failure.
3833 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3834 int flags
, const char *name
,
3835 int64_t min
, int64_t max
)
3837 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3838 name
, I642U64(min
), I642U64(max
));
3840 EXPORT_SYMBOL(drm_property_create_signed_range
);
3843 * drm_property_create_object - create a new object property type
3845 * @flags: flags specifying the property type
3846 * @name: name of the property
3847 * @type: object type from DRM_MODE_OBJECT_* defines
3849 * This creates a new generic drm property which can then be attached to a drm
3850 * object with drm_object_attach_property. The returned property object must be
3851 * freed with drm_property_destroy.
3853 * Userspace is only allowed to set this to any property value of the given
3854 * @type. Only useful for atomic properties, which is enforced.
3857 * A pointer to the newly created property on success, NULL on failure.
3859 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3860 int flags
, const char *name
, uint32_t type
)
3862 struct drm_property
*property
;
3864 flags
|= DRM_MODE_PROP_OBJECT
;
3866 if (WARN_ON(!(flags
& DRM_MODE_PROP_ATOMIC
)))
3869 property
= drm_property_create(dev
, flags
, name
, 1);
3873 property
->values
[0] = type
;
3877 EXPORT_SYMBOL(drm_property_create_object
);
3880 * drm_property_create_bool - create a new boolean property type
3882 * @flags: flags specifying the property type
3883 * @name: name of the property
3885 * This creates a new generic drm property which can then be attached to a drm
3886 * object with drm_object_attach_property. The returned property object must be
3887 * freed with drm_property_destroy.
3889 * This is implemented as a ranged property with only {0, 1} as valid values.
3892 * A pointer to the newly created property on success, NULL on failure.
3894 struct drm_property
*drm_property_create_bool(struct drm_device
*dev
, int flags
,
3897 return drm_property_create_range(dev
, flags
, name
, 0, 1);
3899 EXPORT_SYMBOL(drm_property_create_bool
);
3902 * drm_property_add_enum - add a possible value to an enumeration property
3903 * @property: enumeration property to change
3904 * @index: index of the new enumeration
3905 * @value: value of the new enumeration
3906 * @name: symbolic name of the new enumeration
3908 * This functions adds enumerations to a property.
3910 * It's use is deprecated, drivers should use one of the more specific helpers
3911 * to directly create the property with all enumerations already attached.
3914 * Zero on success, error code on failure.
3916 int drm_property_add_enum(struct drm_property
*property
, int index
,
3917 uint64_t value
, const char *name
)
3919 struct drm_property_enum
*prop_enum
;
3921 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3922 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3926 * Bitmask enum properties have the additional constraint of values
3929 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3933 if (!list_empty(&property
->enum_list
)) {
3934 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3935 if (prop_enum
->value
== value
) {
3936 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3937 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3943 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3947 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3948 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3949 prop_enum
->value
= value
;
3951 property
->values
[index
] = value
;
3952 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
3955 EXPORT_SYMBOL(drm_property_add_enum
);
3958 * drm_property_destroy - destroy a drm property
3960 * @property: property to destry
3962 * This function frees a property including any attached resources like
3963 * enumeration values.
3965 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3967 struct drm_property_enum
*prop_enum
, *pt
;
3969 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
3970 list_del(&prop_enum
->head
);
3974 if (property
->num_values
)
3975 kfree(property
->values
);
3976 drm_mode_object_put(dev
, &property
->base
);
3977 list_del(&property
->head
);
3980 EXPORT_SYMBOL(drm_property_destroy
);
3983 * drm_object_attach_property - attach a property to a modeset object
3984 * @obj: drm modeset object
3985 * @property: property to attach
3986 * @init_val: initial value of the property
3988 * This attaches the given property to the modeset object with the given initial
3989 * value. Currently this function cannot fail since the properties are stored in
3990 * a statically sized array.
3992 void drm_object_attach_property(struct drm_mode_object
*obj
,
3993 struct drm_property
*property
,
3996 int count
= obj
->properties
->count
;
3998 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3999 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4000 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4001 "you see this message on the same object type.\n",
4006 obj
->properties
->properties
[count
] = property
;
4007 obj
->properties
->values
[count
] = init_val
;
4008 obj
->properties
->count
++;
4009 if (property
->flags
& DRM_MODE_PROP_ATOMIC
)
4010 obj
->properties
->atomic_count
++;
4012 EXPORT_SYMBOL(drm_object_attach_property
);
4015 * drm_object_property_set_value - set the value of a property
4016 * @obj: drm mode object to set property value for
4017 * @property: property to set
4018 * @val: value the property should be set to
4020 * This functions sets a given property on a given object. This function only
4021 * changes the software state of the property, it does not call into the
4022 * driver's ->set_property callback.
4025 * Zero on success, error code on failure.
4027 int drm_object_property_set_value(struct drm_mode_object
*obj
,
4028 struct drm_property
*property
, uint64_t val
)
4032 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4033 if (obj
->properties
->properties
[i
] == property
) {
4034 obj
->properties
->values
[i
] = val
;
4041 EXPORT_SYMBOL(drm_object_property_set_value
);
4044 * drm_object_property_get_value - retrieve the value of a property
4045 * @obj: drm mode object to get property value from
4046 * @property: property to retrieve
4047 * @val: storage for the property value
4049 * This function retrieves the softare state of the given property for the given
4050 * property. Since there is no driver callback to retrieve the current property
4051 * value this might be out of sync with the hardware, depending upon the driver
4055 * Zero on success, error code on failure.
4057 int drm_object_property_get_value(struct drm_mode_object
*obj
,
4058 struct drm_property
*property
, uint64_t *val
)
4062 /* read-only properties bypass atomic mechanism and still store
4063 * their value in obj->properties->values[].. mostly to avoid
4064 * having to deal w/ EDID and similar props in atomic paths:
4066 if (drm_core_check_feature(property
->dev
, DRIVER_ATOMIC
) &&
4067 !(property
->flags
& DRM_MODE_PROP_IMMUTABLE
))
4068 return drm_atomic_get_property(obj
, property
, val
);
4070 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4071 if (obj
->properties
->properties
[i
] == property
) {
4072 *val
= obj
->properties
->values
[i
];
4079 EXPORT_SYMBOL(drm_object_property_get_value
);
4082 * drm_mode_getproperty_ioctl - get the property metadata
4085 * @file_priv: DRM file info
4087 * This function retrieves the metadata for a given property, like the different
4088 * possible values for an enum property or the limits for a range property.
4090 * Blob properties are special
4092 * Called by the user via ioctl.
4095 * Zero on success, negative errno on failure.
4097 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
4098 void *data
, struct drm_file
*file_priv
)
4100 struct drm_mode_get_property
*out_resp
= data
;
4101 struct drm_property
*property
;
4103 int value_count
= 0;
4106 struct drm_property_enum
*prop_enum
;
4107 struct drm_mode_property_enum __user
*enum_ptr
;
4108 uint64_t __user
*values_ptr
;
4110 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4113 drm_modeset_lock_all(dev
);
4114 property
= drm_property_find(dev
, out_resp
->prop_id
);
4120 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4121 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4122 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
4126 value_count
= property
->num_values
;
4128 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
4129 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
4130 out_resp
->flags
= property
->flags
;
4132 if ((out_resp
->count_values
>= value_count
) && value_count
) {
4133 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
4134 for (i
= 0; i
< value_count
; i
++) {
4135 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
4141 out_resp
->count_values
= value_count
;
4143 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4144 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4145 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
4147 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
4148 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
4150 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
4155 if (copy_to_user(&enum_ptr
[copied
].name
,
4156 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
4163 out_resp
->count_enum_blobs
= enum_count
;
4167 * NOTE: The idea seems to have been to use this to read all the blob
4168 * property values. But nothing ever added them to the corresponding
4169 * list, userspace always used the special-purpose get_blob ioctl to
4170 * read the value for a blob property. It also doesn't make a lot of
4171 * sense to return values here when everything else is just metadata for
4172 * the property itself.
4174 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4175 out_resp
->count_enum_blobs
= 0;
4177 drm_modeset_unlock_all(dev
);
4182 * drm_property_create_blob - Create new blob property
4184 * Creates a new blob property for a specified DRM device, optionally
4187 * @dev: DRM device to create property for
4188 * @length: Length to allocate for blob data
4189 * @data: If specified, copies data into blob
4192 * New blob property with a single reference on success, or an ERR_PTR
4195 struct drm_property_blob
*
4196 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
4199 struct drm_property_blob
*blob
;
4202 if (!length
|| length
> ULONG_MAX
- sizeof(struct drm_property_blob
))
4203 return ERR_PTR(-EINVAL
);
4205 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
4207 return ERR_PTR(-ENOMEM
);
4209 /* This must be explicitly initialised, so we can safely call list_del
4210 * on it in the removal handler, even if it isn't in a file list. */
4211 INIT_LIST_HEAD(&blob
->head_file
);
4212 blob
->length
= length
;
4216 memcpy(blob
->data
, data
, length
);
4218 mutex_lock(&dev
->mode_config
.blob_lock
);
4220 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
4223 mutex_unlock(&dev
->mode_config
.blob_lock
);
4224 return ERR_PTR(-EINVAL
);
4227 kref_init(&blob
->refcount
);
4229 list_add_tail(&blob
->head_global
,
4230 &dev
->mode_config
.property_blob_list
);
4232 mutex_unlock(&dev
->mode_config
.blob_lock
);
4236 EXPORT_SYMBOL(drm_property_create_blob
);
4239 * drm_property_free_blob - Blob property destructor
4241 * Internal free function for blob properties; must not be used directly.
4245 static void drm_property_free_blob(struct kref
*kref
)
4247 struct drm_property_blob
*blob
=
4248 container_of(kref
, struct drm_property_blob
, refcount
);
4250 WARN_ON(!mutex_is_locked(&blob
->dev
->mode_config
.blob_lock
));
4252 list_del(&blob
->head_global
);
4253 list_del(&blob
->head_file
);
4254 drm_mode_object_put(blob
->dev
, &blob
->base
);
4260 * drm_property_unreference_blob - Unreference a blob property
4262 * Drop a reference on a blob property. May free the object.
4264 * @blob: Pointer to blob property
4266 void drm_property_unreference_blob(struct drm_property_blob
*blob
)
4268 struct drm_device
*dev
;
4275 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4277 if (kref_put_mutex(&blob
->refcount
, drm_property_free_blob
,
4278 &dev
->mode_config
.blob_lock
))
4279 mutex_unlock(&dev
->mode_config
.blob_lock
);
4281 might_lock(&dev
->mode_config
.blob_lock
);
4283 EXPORT_SYMBOL(drm_property_unreference_blob
);
4286 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4288 * Drop a reference on a blob property. May free the object. This must be
4289 * called with blob_lock held.
4291 * @blob: Pointer to blob property
4293 static void drm_property_unreference_blob_locked(struct drm_property_blob
*blob
)
4298 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4300 kref_put(&blob
->refcount
, drm_property_free_blob
);
4304 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4306 * @file_priv: destroy all blobs owned by this file handle
4308 void drm_property_destroy_user_blobs(struct drm_device
*dev
,
4309 struct drm_file
*file_priv
)
4311 struct drm_property_blob
*blob
, *bt
;
4313 mutex_lock(&dev
->mode_config
.blob_lock
);
4315 list_for_each_entry_safe(blob
, bt
, &file_priv
->blobs
, head_file
) {
4316 list_del_init(&blob
->head_file
);
4317 drm_property_unreference_blob_locked(blob
);
4320 mutex_unlock(&dev
->mode_config
.blob_lock
);
4324 * drm_property_reference_blob - Take a reference on an existing property
4326 * Take a new reference on an existing blob property.
4328 * @blob: Pointer to blob property
4330 struct drm_property_blob
*drm_property_reference_blob(struct drm_property_blob
*blob
)
4332 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4333 kref_get(&blob
->refcount
);
4336 EXPORT_SYMBOL(drm_property_reference_blob
);
4339 * Like drm_property_lookup_blob, but does not return an additional reference.
4340 * Must be called with blob_lock held.
4342 static struct drm_property_blob
*__drm_property_lookup_blob(struct drm_device
*dev
,
4345 struct drm_mode_object
*obj
= NULL
;
4346 struct drm_property_blob
*blob
;
4348 WARN_ON(!mutex_is_locked(&dev
->mode_config
.blob_lock
));
4350 mutex_lock(&dev
->mode_config
.idr_mutex
);
4351 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
4352 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_BLOB
) || (obj
->id
!= id
))
4355 blob
= obj_to_blob(obj
);
4356 mutex_unlock(&dev
->mode_config
.idr_mutex
);
4362 * drm_property_lookup_blob - look up a blob property and take a reference
4364 * @id: id of the blob property
4366 * If successful, this takes an additional reference to the blob property.
4367 * callers need to make sure to eventually unreference the returned property
4368 * again, using @drm_property_unreference_blob.
4370 struct drm_property_blob
*drm_property_lookup_blob(struct drm_device
*dev
,
4373 struct drm_property_blob
*blob
;
4375 mutex_lock(&dev
->mode_config
.blob_lock
);
4376 blob
= __drm_property_lookup_blob(dev
, id
);
4378 if (!kref_get_unless_zero(&blob
->refcount
))
4381 mutex_unlock(&dev
->mode_config
.blob_lock
);
4385 EXPORT_SYMBOL(drm_property_lookup_blob
);
4388 * drm_property_replace_global_blob - atomically replace existing blob property
4390 * @replace: location of blob property pointer to be replaced
4391 * @length: length of data for new blob, or 0 for no data
4392 * @data: content for new blob, or NULL for no data
4393 * @obj_holds_id: optional object for property holding blob ID
4394 * @prop_holds_id: optional property holding blob ID
4395 * @return 0 on success or error on failure
4397 * This function will atomically replace a global property in the blob list,
4398 * optionally updating a property which holds the ID of that property. It is
4399 * guaranteed to be atomic: no caller will be allowed to see intermediate
4400 * results, and either the entire operation will succeed and clean up the
4401 * previous property, or it will fail and the state will be unchanged.
4403 * If length is 0 or data is NULL, no new blob will be created, and the holding
4404 * property, if specified, will be set to 0.
4406 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4407 * by holding the relevant modesetting object lock for its parent.
4409 * For example, a drm_connector has a 'PATH' property, which contains the ID
4410 * of a blob property with the value of the MST path information. Calling this
4411 * function with replace pointing to the connector's path_blob_ptr, length and
4412 * data set for the new path information, obj_holds_id set to the connector's
4413 * base object, and prop_holds_id set to the path property name, will perform
4414 * a completely atomic update. The access to path_blob_ptr is protected by the
4415 * caller holding a lock on the connector.
4417 static int drm_property_replace_global_blob(struct drm_device
*dev
,
4418 struct drm_property_blob
**replace
,
4421 struct drm_mode_object
*obj_holds_id
,
4422 struct drm_property
*prop_holds_id
)
4424 struct drm_property_blob
*new_blob
= NULL
;
4425 struct drm_property_blob
*old_blob
= NULL
;
4428 WARN_ON(replace
== NULL
);
4430 old_blob
= *replace
;
4432 if (length
&& data
) {
4433 new_blob
= drm_property_create_blob(dev
, length
, data
);
4434 if (IS_ERR(new_blob
))
4435 return PTR_ERR(new_blob
);
4438 /* This does not need to be synchronised with blob_lock, as the
4439 * get_properties ioctl locks all modesetting objects, and
4440 * obj_holds_id must be locked before calling here, so we cannot
4441 * have its value out of sync with the list membership modified
4442 * below under blob_lock. */
4444 ret
= drm_object_property_set_value(obj_holds_id
,
4447 new_blob
->base
.id
: 0);
4452 drm_property_unreference_blob(old_blob
);
4453 *replace
= new_blob
;
4458 drm_property_unreference_blob(new_blob
);
4463 * drm_mode_getblob_ioctl - get the contents of a blob property value
4466 * @file_priv: DRM file info
4468 * This function retrieves the contents of a blob property. The value stored in
4469 * an object's blob property is just a normal modeset object id.
4471 * Called by the user via ioctl.
4474 * Zero on success, negative errno on failure.
4476 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
4477 void *data
, struct drm_file
*file_priv
)
4479 struct drm_mode_get_blob
*out_resp
= data
;
4480 struct drm_property_blob
*blob
;
4482 void __user
*blob_ptr
;
4484 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4487 drm_modeset_lock_all(dev
);
4488 mutex_lock(&dev
->mode_config
.blob_lock
);
4489 blob
= __drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4495 if (out_resp
->length
== blob
->length
) {
4496 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4497 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)) {
4502 out_resp
->length
= blob
->length
;
4505 mutex_unlock(&dev
->mode_config
.blob_lock
);
4506 drm_modeset_unlock_all(dev
);
4511 * drm_mode_createblob_ioctl - create a new blob property
4514 * @file_priv: DRM file info
4516 * This function creates a new blob property with user-defined values. In order
4517 * to give us sensible validation and checking when creating, rather than at
4518 * every potential use, we also require a type to be provided upfront.
4520 * Called by the user via ioctl.
4523 * Zero on success, negative errno on failure.
4525 int drm_mode_createblob_ioctl(struct drm_device
*dev
,
4526 void *data
, struct drm_file
*file_priv
)
4528 struct drm_mode_create_blob
*out_resp
= data
;
4529 struct drm_property_blob
*blob
;
4530 void __user
*blob_ptr
;
4533 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4536 blob
= drm_property_create_blob(dev
, out_resp
->length
, NULL
);
4538 return PTR_ERR(blob
);
4540 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4541 if (copy_from_user(blob
->data
, blob_ptr
, out_resp
->length
)) {
4546 /* Dropping the lock between create_blob and our access here is safe
4547 * as only the same file_priv can remove the blob; at this point, it is
4548 * not associated with any file_priv. */
4549 mutex_lock(&dev
->mode_config
.blob_lock
);
4550 out_resp
->blob_id
= blob
->base
.id
;
4551 list_add_tail(&blob
->head_file
, &file_priv
->blobs
);
4552 mutex_unlock(&dev
->mode_config
.blob_lock
);
4557 drm_property_unreference_blob(blob
);
4562 * drm_mode_destroyblob_ioctl - destroy a user blob property
4565 * @file_priv: DRM file info
4567 * Destroy an existing user-defined blob property.
4569 * Called by the user via ioctl.
4572 * Zero on success, negative errno on failure.
4574 int drm_mode_destroyblob_ioctl(struct drm_device
*dev
,
4575 void *data
, struct drm_file
*file_priv
)
4577 struct drm_mode_destroy_blob
*out_resp
= data
;
4578 struct drm_property_blob
*blob
= NULL
, *bt
;
4582 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4585 mutex_lock(&dev
->mode_config
.blob_lock
);
4586 blob
= __drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4592 /* Ensure the property was actually created by this user. */
4593 list_for_each_entry(bt
, &file_priv
->blobs
, head_file
) {
4605 /* We must drop head_file here, because we may not be the last
4606 * reference on the blob. */
4607 list_del_init(&blob
->head_file
);
4608 drm_property_unreference_blob_locked(blob
);
4609 mutex_unlock(&dev
->mode_config
.blob_lock
);
4614 mutex_unlock(&dev
->mode_config
.blob_lock
);
4619 * drm_mode_connector_set_path_property - set tile property on connector
4620 * @connector: connector to set property on.
4621 * @path: path to use for property; must not be NULL.
4623 * This creates a property to expose to userspace to specify a
4624 * connector path. This is mainly used for DisplayPort MST where
4625 * connectors have a topology and we want to allow userspace to give
4626 * them more meaningful names.
4629 * Zero on success, negative errno on failure.
4631 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4634 struct drm_device
*dev
= connector
->dev
;
4637 ret
= drm_property_replace_global_blob(dev
,
4638 &connector
->path_blob_ptr
,
4642 dev
->mode_config
.path_property
);
4645 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4648 * drm_mode_connector_set_tile_property - set tile property on connector
4649 * @connector: connector to set property on.
4651 * This looks up the tile information for a connector, and creates a
4652 * property for userspace to parse if it exists. The property is of
4653 * the form of 8 integers using ':' as a separator.
4656 * Zero on success, errno on failure.
4658 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
)
4660 struct drm_device
*dev
= connector
->dev
;
4664 if (!connector
->has_tile
) {
4665 ret
= drm_property_replace_global_blob(dev
,
4666 &connector
->tile_blob_ptr
,
4670 dev
->mode_config
.tile_property
);
4674 snprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4675 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
4676 connector
->num_h_tile
, connector
->num_v_tile
,
4677 connector
->tile_h_loc
, connector
->tile_v_loc
,
4678 connector
->tile_h_size
, connector
->tile_v_size
);
4680 ret
= drm_property_replace_global_blob(dev
,
4681 &connector
->tile_blob_ptr
,
4685 dev
->mode_config
.tile_property
);
4688 EXPORT_SYMBOL(drm_mode_connector_set_tile_property
);
4691 * drm_mode_connector_update_edid_property - update the edid property of a connector
4692 * @connector: drm connector
4693 * @edid: new value of the edid property
4695 * This function creates a new blob modeset object and assigns its id to the
4696 * connector's edid property.
4699 * Zero on success, negative errno on failure.
4701 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4702 const struct edid
*edid
)
4704 struct drm_device
*dev
= connector
->dev
;
4708 /* ignore requests to set edid when overridden */
4709 if (connector
->override_edid
)
4713 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4715 ret
= drm_property_replace_global_blob(dev
,
4716 &connector
->edid_blob_ptr
,
4720 dev
->mode_config
.edid_property
);
4723 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4725 /* Some properties could refer to dynamic refcnt'd objects, or things that
4726 * need special locking to handle lifetime issues (ie. to ensure the prop
4727 * value doesn't become invalid part way through the property update due to
4728 * race). The value returned by reference via 'obj' should be passed back
4729 * to drm_property_change_valid_put() after the property is set (and the
4730 * object to which the property is attached has a chance to take it's own
4733 bool drm_property_change_valid_get(struct drm_property
*property
,
4734 uint64_t value
, struct drm_mode_object
**ref
)
4738 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4743 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4744 if (value
< property
->values
[0] || value
> property
->values
[1])
4747 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4748 int64_t svalue
= U642I64(value
);
4750 if (svalue
< U642I64(property
->values
[0]) ||
4751 svalue
> U642I64(property
->values
[1]))
4754 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4755 uint64_t valid_mask
= 0;
4757 for (i
= 0; i
< property
->num_values
; i
++)
4758 valid_mask
|= (1ULL << property
->values
[i
]);
4759 return !(value
& ~valid_mask
);
4760 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4761 struct drm_property_blob
*blob
;
4766 blob
= drm_property_lookup_blob(property
->dev
, value
);
4773 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4774 /* a zero value for an object property translates to null: */
4778 /* handle refcnt'd objects specially: */
4779 if (property
->values
[0] == DRM_MODE_OBJECT_FB
) {
4780 struct drm_framebuffer
*fb
;
4781 fb
= drm_framebuffer_lookup(property
->dev
, value
);
4789 return _object_find(property
->dev
, value
, property
->values
[0]) != NULL
;
4793 for (i
= 0; i
< property
->num_values
; i
++)
4794 if (property
->values
[i
] == value
)
4799 void drm_property_change_valid_put(struct drm_property
*property
,
4800 struct drm_mode_object
*ref
)
4805 if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4806 if (property
->values
[0] == DRM_MODE_OBJECT_FB
)
4807 drm_framebuffer_unreference(obj_to_fb(ref
));
4808 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4809 drm_property_unreference_blob(obj_to_blob(ref
));
4813 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4816 * @file_priv: DRM file info
4818 * This function sets the current value for a connectors's property. It also
4819 * calls into a driver's ->set_property callback to update the hardware state
4821 * Called by the user via ioctl.
4824 * Zero on success, negative errno on failure.
4826 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4827 void *data
, struct drm_file
*file_priv
)
4829 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4830 struct drm_mode_obj_set_property obj_set_prop
= {
4831 .value
= conn_set_prop
->value
,
4832 .prop_id
= conn_set_prop
->prop_id
,
4833 .obj_id
= conn_set_prop
->connector_id
,
4834 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4837 /* It does all the locking and checking we need */
4838 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4841 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4842 struct drm_property
*property
,
4846 struct drm_connector
*connector
= obj_to_connector(obj
);
4848 /* Do DPMS ourselves */
4849 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4850 ret
= (*connector
->funcs
->dpms
)(connector
, (int)value
);
4851 } else if (connector
->funcs
->set_property
)
4852 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4854 /* store the property value if successful */
4856 drm_object_property_set_value(&connector
->base
, property
, value
);
4860 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4861 struct drm_property
*property
,
4865 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4867 if (crtc
->funcs
->set_property
)
4868 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4870 drm_object_property_set_value(obj
, property
, value
);
4876 * drm_mode_plane_set_obj_prop - set the value of a property
4877 * @plane: drm plane object to set property value for
4878 * @property: property to set
4879 * @value: value the property should be set to
4881 * This functions sets a given property on a given plane object. This function
4882 * calls the driver's ->set_property callback and changes the software state of
4883 * the property if the callback succeeds.
4886 * Zero on success, error code on failure.
4888 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4889 struct drm_property
*property
,
4893 struct drm_mode_object
*obj
= &plane
->base
;
4895 if (plane
->funcs
->set_property
)
4896 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4898 drm_object_property_set_value(obj
, property
, value
);
4902 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4905 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4908 * @file_priv: DRM file info
4910 * This function retrieves the current value for an object's property. Compared
4911 * to the connector specific ioctl this one is extended to also work on crtc and
4914 * Called by the user via ioctl.
4917 * Zero on success, negative errno on failure.
4919 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4920 struct drm_file
*file_priv
)
4922 struct drm_mode_obj_get_properties
*arg
= data
;
4923 struct drm_mode_object
*obj
;
4926 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4929 drm_modeset_lock_all(dev
);
4931 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4936 if (!obj
->properties
) {
4941 ret
= get_properties(obj
, file_priv
->atomic
,
4942 (uint32_t __user
*)(unsigned long)(arg
->props_ptr
),
4943 (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
),
4947 drm_modeset_unlock_all(dev
);
4952 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4955 * @file_priv: DRM file info
4957 * This function sets the current value for an object's property. It also calls
4958 * into a driver's ->set_property callback to update the hardware state.
4959 * Compared to the connector specific ioctl this one is extended to also work on
4960 * crtc and plane objects.
4962 * Called by the user via ioctl.
4965 * Zero on success, negative errno on failure.
4967 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4968 struct drm_file
*file_priv
)
4970 struct drm_mode_obj_set_property
*arg
= data
;
4971 struct drm_mode_object
*arg_obj
;
4972 struct drm_mode_object
*prop_obj
;
4973 struct drm_property
*property
;
4974 int i
, ret
= -EINVAL
;
4975 struct drm_mode_object
*ref
;
4977 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4980 drm_modeset_lock_all(dev
);
4982 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4987 if (!arg_obj
->properties
)
4990 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4991 if (arg_obj
->properties
->properties
[i
]->base
.id
== arg
->prop_id
)
4994 if (i
== arg_obj
->properties
->count
)
4997 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
4998 DRM_MODE_OBJECT_PROPERTY
);
5003 property
= obj_to_property(prop_obj
);
5005 if (!drm_property_change_valid_get(property
, arg
->value
, &ref
))
5008 switch (arg_obj
->type
) {
5009 case DRM_MODE_OBJECT_CONNECTOR
:
5010 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
5013 case DRM_MODE_OBJECT_CRTC
:
5014 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
5016 case DRM_MODE_OBJECT_PLANE
:
5017 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
5018 property
, arg
->value
);
5022 drm_property_change_valid_put(property
, ref
);
5025 drm_modeset_unlock_all(dev
);
5030 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5031 * @connector: connector to attach
5032 * @encoder: encoder to attach @connector to
5034 * This function links up a connector to an encoder. Note that the routing
5035 * restrictions between encoders and crtcs are exposed to userspace through the
5036 * possible_clones and possible_crtcs bitmasks.
5039 * Zero on success, negative errno on failure.
5041 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
5042 struct drm_encoder
*encoder
)
5047 * In the past, drivers have attempted to model the static association
5048 * of connector to encoder in simple connector/encoder devices using a
5049 * direct assignment of connector->encoder = encoder. This connection
5050 * is a logical one and the responsibility of the core, so drivers are
5051 * expected not to mess with this.
5053 * Note that the error return should've been enough here, but a large
5054 * majority of drivers ignores the return value, so add in a big WARN
5055 * to get people's attention.
5057 if (WARN_ON(connector
->encoder
))
5060 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
5061 if (connector
->encoder_ids
[i
] == 0) {
5062 connector
->encoder_ids
[i
] = encoder
->base
.id
;
5068 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
5071 * drm_mode_crtc_set_gamma_size - set the gamma table size
5072 * @crtc: CRTC to set the gamma table size for
5073 * @gamma_size: size of the gamma table
5075 * Drivers which support gamma tables should set this to the supported gamma
5076 * table size when initializing the CRTC. Currently the drm core only supports a
5077 * fixed gamma table size.
5080 * Zero on success, negative errno on failure.
5082 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
5085 crtc
->gamma_size
= gamma_size
;
5087 crtc
->gamma_store
= kcalloc(gamma_size
, sizeof(uint16_t) * 3,
5089 if (!crtc
->gamma_store
) {
5090 crtc
->gamma_size
= 0;
5096 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
5099 * drm_mode_gamma_set_ioctl - set the gamma table
5102 * @file_priv: DRM file info
5104 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5105 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5107 * Called by the user via ioctl.
5110 * Zero on success, negative errno on failure.
5112 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
5113 void *data
, struct drm_file
*file_priv
)
5115 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5116 struct drm_crtc
*crtc
;
5117 void *r_base
, *g_base
, *b_base
;
5121 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5124 drm_modeset_lock_all(dev
);
5125 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5131 if (crtc
->funcs
->gamma_set
== NULL
) {
5136 /* memcpy into gamma store */
5137 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5142 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5143 r_base
= crtc
->gamma_store
;
5144 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
5149 g_base
= r_base
+ size
;
5150 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
5155 b_base
= g_base
+ size
;
5156 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
5161 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
5164 drm_modeset_unlock_all(dev
);
5170 * drm_mode_gamma_get_ioctl - get the gamma table
5173 * @file_priv: DRM file info
5175 * Copy the current gamma table into the storage provided. This also provides
5176 * the gamma table size the driver expects, which can be used to size the
5177 * allocated storage.
5179 * Called by the user via ioctl.
5182 * Zero on success, negative errno on failure.
5184 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
5185 void *data
, struct drm_file
*file_priv
)
5187 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5188 struct drm_crtc
*crtc
;
5189 void *r_base
, *g_base
, *b_base
;
5193 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5196 drm_modeset_lock_all(dev
);
5197 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5203 /* memcpy into gamma store */
5204 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5209 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5210 r_base
= crtc
->gamma_store
;
5211 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
5216 g_base
= r_base
+ size
;
5217 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
5222 b_base
= g_base
+ size
;
5223 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
5228 drm_modeset_unlock_all(dev
);
5233 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5236 * @file_priv: DRM file info
5238 * This schedules an asynchronous update on a given CRTC, called page flip.
5239 * Optionally a drm event is generated to signal the completion of the event.
5240 * Generic drivers cannot assume that a pageflip with changed framebuffer
5241 * properties (including driver specific metadata like tiling layout) will work,
5242 * but some drivers support e.g. pixel format changes through the pageflip
5245 * Called by the user via ioctl.
5248 * Zero on success, negative errno on failure.
5250 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
5251 void *data
, struct drm_file
*file_priv
)
5253 struct drm_mode_crtc_page_flip
*page_flip
= data
;
5254 struct drm_crtc
*crtc
;
5255 struct drm_framebuffer
*fb
= NULL
;
5256 struct drm_pending_vblank_event
*e
= NULL
;
5257 unsigned long flags
;
5260 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
5261 page_flip
->reserved
!= 0)
5264 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
5267 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
5271 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
5272 if (crtc
->primary
->fb
== NULL
) {
5273 /* The framebuffer is currently unbound, presumably
5274 * due to a hotplug event, that userspace has not
5281 if (crtc
->funcs
->page_flip
== NULL
)
5284 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
5291 const struct drm_plane_state
*state
= crtc
->primary
->state
;
5293 ret
= check_src_coords(state
->src_x
, state
->src_y
,
5294 state
->src_w
, state
->src_h
, fb
);
5296 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
5301 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
5302 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5307 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5309 spin_lock_irqsave(&dev
->event_lock
, flags
);
5310 if (file_priv
->event_space
< sizeof(e
->event
)) {
5311 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5314 file_priv
->event_space
-= sizeof(e
->event
);
5315 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5317 e
= kzalloc(sizeof(*e
), GFP_KERNEL
);
5319 spin_lock_irqsave(&dev
->event_lock
, flags
);
5320 file_priv
->event_space
+= sizeof(e
->event
);
5321 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5325 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
5326 e
->event
.base
.length
= sizeof(e
->event
);
5327 e
->event
.user_data
= page_flip
->user_data
;
5328 e
->base
.event
= &e
->event
.base
;
5329 e
->base
.file_priv
= file_priv
;
5331 (void (*) (struct drm_pending_event
*)) kfree
;
5334 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
5335 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
5337 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5338 spin_lock_irqsave(&dev
->event_lock
, flags
);
5339 file_priv
->event_space
+= sizeof(e
->event
);
5340 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5343 /* Keep the old fb, don't unref it. */
5344 crtc
->primary
->old_fb
= NULL
;
5346 crtc
->primary
->fb
= fb
;
5347 /* Unref only the old framebuffer. */
5353 drm_framebuffer_unreference(fb
);
5354 if (crtc
->primary
->old_fb
)
5355 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
5356 crtc
->primary
->old_fb
= NULL
;
5357 drm_modeset_unlock_crtc(crtc
);
5363 * drm_mode_config_reset - call ->reset callbacks
5366 * This functions calls all the crtc's, encoder's and connector's ->reset
5367 * callback. Drivers can use this in e.g. their driver load or resume code to
5368 * reset hardware and software state.
5370 void drm_mode_config_reset(struct drm_device
*dev
)
5372 struct drm_crtc
*crtc
;
5373 struct drm_plane
*plane
;
5374 struct drm_encoder
*encoder
;
5375 struct drm_connector
*connector
;
5377 drm_for_each_plane(plane
, dev
)
5378 if (plane
->funcs
->reset
)
5379 plane
->funcs
->reset(plane
);
5381 drm_for_each_crtc(crtc
, dev
)
5382 if (crtc
->funcs
->reset
)
5383 crtc
->funcs
->reset(crtc
);
5385 drm_for_each_encoder(encoder
, dev
)
5386 if (encoder
->funcs
->reset
)
5387 encoder
->funcs
->reset(encoder
);
5389 mutex_lock(&dev
->mode_config
.mutex
);
5390 drm_for_each_connector(connector
, dev
)
5391 if (connector
->funcs
->reset
)
5392 connector
->funcs
->reset(connector
);
5393 mutex_unlock(&dev
->mode_config
.mutex
);
5395 EXPORT_SYMBOL(drm_mode_config_reset
);
5398 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5401 * @file_priv: DRM file info
5403 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5404 * TTM or something else entirely) and returns the resulting buffer handle. This
5405 * handle can then be wrapped up into a framebuffer modeset object.
5407 * Note that userspace is not allowed to use such objects for render
5408 * acceleration - drivers must create their own private ioctls for such a use
5411 * Called by the user via ioctl.
5414 * Zero on success, negative errno on failure.
5416 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
5417 void *data
, struct drm_file
*file_priv
)
5419 struct drm_mode_create_dumb
*args
= data
;
5420 u32 cpp
, stride
, size
;
5422 if (!dev
->driver
->dumb_create
)
5424 if (!args
->width
|| !args
->height
|| !args
->bpp
)
5427 /* overflow checks for 32bit size calculations */
5428 /* NOTE: DIV_ROUND_UP() can overflow */
5429 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
5430 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
5432 stride
= cpp
* args
->width
;
5433 if (args
->height
> 0xffffffffU
/ stride
)
5436 /* test for wrap-around */
5437 size
= args
->height
* stride
;
5438 if (PAGE_ALIGN(size
) == 0)
5442 * handle, pitch and size are output parameters. Zero them out to
5443 * prevent drivers from accidentally using uninitialized data. Since
5444 * not all existing userspace is clearing these fields properly we
5445 * cannot reject IOCTL with garbage in them.
5451 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
5455 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5458 * @file_priv: DRM file info
5460 * Allocate an offset in the drm device node's address space to be able to
5461 * memory map a dumb buffer.
5463 * Called by the user via ioctl.
5466 * Zero on success, negative errno on failure.
5468 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
5469 void *data
, struct drm_file
*file_priv
)
5471 struct drm_mode_map_dumb
*args
= data
;
5473 /* call driver ioctl to get mmap offset */
5474 if (!dev
->driver
->dumb_map_offset
)
5477 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
5481 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5484 * @file_priv: DRM file info
5486 * This destroys the userspace handle for the given dumb backing storage buffer.
5487 * Since buffer objects must be reference counted in the kernel a buffer object
5488 * won't be immediately freed if a framebuffer modeset object still uses it.
5490 * Called by the user via ioctl.
5493 * Zero on success, negative errno on failure.
5495 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
5496 void *data
, struct drm_file
*file_priv
)
5498 struct drm_mode_destroy_dumb
*args
= data
;
5500 if (!dev
->driver
->dumb_destroy
)
5503 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
5507 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5508 * @format: pixel format (DRM_FORMAT_*)
5509 * @depth: storage for the depth value
5510 * @bpp: storage for the bpp value
5512 * This only supports RGB formats here for compat with code that doesn't use
5513 * pixel formats directly yet.
5515 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
5520 case DRM_FORMAT_RGB332
:
5521 case DRM_FORMAT_BGR233
:
5525 case DRM_FORMAT_XRGB1555
:
5526 case DRM_FORMAT_XBGR1555
:
5527 case DRM_FORMAT_RGBX5551
:
5528 case DRM_FORMAT_BGRX5551
:
5529 case DRM_FORMAT_ARGB1555
:
5530 case DRM_FORMAT_ABGR1555
:
5531 case DRM_FORMAT_RGBA5551
:
5532 case DRM_FORMAT_BGRA5551
:
5536 case DRM_FORMAT_RGB565
:
5537 case DRM_FORMAT_BGR565
:
5541 case DRM_FORMAT_RGB888
:
5542 case DRM_FORMAT_BGR888
:
5546 case DRM_FORMAT_XRGB8888
:
5547 case DRM_FORMAT_XBGR8888
:
5548 case DRM_FORMAT_RGBX8888
:
5549 case DRM_FORMAT_BGRX8888
:
5553 case DRM_FORMAT_XRGB2101010
:
5554 case DRM_FORMAT_XBGR2101010
:
5555 case DRM_FORMAT_RGBX1010102
:
5556 case DRM_FORMAT_BGRX1010102
:
5557 case DRM_FORMAT_ARGB2101010
:
5558 case DRM_FORMAT_ABGR2101010
:
5559 case DRM_FORMAT_RGBA1010102
:
5560 case DRM_FORMAT_BGRA1010102
:
5564 case DRM_FORMAT_ARGB8888
:
5565 case DRM_FORMAT_ABGR8888
:
5566 case DRM_FORMAT_RGBA8888
:
5567 case DRM_FORMAT_BGRA8888
:
5572 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5573 drm_get_format_name(format
));
5579 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
5582 * drm_format_num_planes - get the number of planes for format
5583 * @format: pixel format (DRM_FORMAT_*)
5586 * The number of planes used by the specified pixel format.
5588 int drm_format_num_planes(uint32_t format
)
5591 case DRM_FORMAT_YUV410
:
5592 case DRM_FORMAT_YVU410
:
5593 case DRM_FORMAT_YUV411
:
5594 case DRM_FORMAT_YVU411
:
5595 case DRM_FORMAT_YUV420
:
5596 case DRM_FORMAT_YVU420
:
5597 case DRM_FORMAT_YUV422
:
5598 case DRM_FORMAT_YVU422
:
5599 case DRM_FORMAT_YUV444
:
5600 case DRM_FORMAT_YVU444
:
5602 case DRM_FORMAT_NV12
:
5603 case DRM_FORMAT_NV21
:
5604 case DRM_FORMAT_NV16
:
5605 case DRM_FORMAT_NV61
:
5606 case DRM_FORMAT_NV24
:
5607 case DRM_FORMAT_NV42
:
5613 EXPORT_SYMBOL(drm_format_num_planes
);
5616 * drm_format_plane_cpp - determine the bytes per pixel value
5617 * @format: pixel format (DRM_FORMAT_*)
5618 * @plane: plane index
5621 * The bytes per pixel value for the specified plane.
5623 int drm_format_plane_cpp(uint32_t format
, int plane
)
5628 if (plane
>= drm_format_num_planes(format
))
5632 case DRM_FORMAT_YUYV
:
5633 case DRM_FORMAT_YVYU
:
5634 case DRM_FORMAT_UYVY
:
5635 case DRM_FORMAT_VYUY
:
5637 case DRM_FORMAT_NV12
:
5638 case DRM_FORMAT_NV21
:
5639 case DRM_FORMAT_NV16
:
5640 case DRM_FORMAT_NV61
:
5641 case DRM_FORMAT_NV24
:
5642 case DRM_FORMAT_NV42
:
5643 return plane
? 2 : 1;
5644 case DRM_FORMAT_YUV410
:
5645 case DRM_FORMAT_YVU410
:
5646 case DRM_FORMAT_YUV411
:
5647 case DRM_FORMAT_YVU411
:
5648 case DRM_FORMAT_YUV420
:
5649 case DRM_FORMAT_YVU420
:
5650 case DRM_FORMAT_YUV422
:
5651 case DRM_FORMAT_YVU422
:
5652 case DRM_FORMAT_YUV444
:
5653 case DRM_FORMAT_YVU444
:
5656 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
5660 EXPORT_SYMBOL(drm_format_plane_cpp
);
5663 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5664 * @format: pixel format (DRM_FORMAT_*)
5667 * The horizontal chroma subsampling factor for the
5668 * specified pixel format.
5670 int drm_format_horz_chroma_subsampling(uint32_t format
)
5673 case DRM_FORMAT_YUV411
:
5674 case DRM_FORMAT_YVU411
:
5675 case DRM_FORMAT_YUV410
:
5676 case DRM_FORMAT_YVU410
:
5678 case DRM_FORMAT_YUYV
:
5679 case DRM_FORMAT_YVYU
:
5680 case DRM_FORMAT_UYVY
:
5681 case DRM_FORMAT_VYUY
:
5682 case DRM_FORMAT_NV12
:
5683 case DRM_FORMAT_NV21
:
5684 case DRM_FORMAT_NV16
:
5685 case DRM_FORMAT_NV61
:
5686 case DRM_FORMAT_YUV422
:
5687 case DRM_FORMAT_YVU422
:
5688 case DRM_FORMAT_YUV420
:
5689 case DRM_FORMAT_YVU420
:
5695 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5698 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5699 * @format: pixel format (DRM_FORMAT_*)
5702 * The vertical chroma subsampling factor for the
5703 * specified pixel format.
5705 int drm_format_vert_chroma_subsampling(uint32_t format
)
5708 case DRM_FORMAT_YUV410
:
5709 case DRM_FORMAT_YVU410
:
5711 case DRM_FORMAT_YUV420
:
5712 case DRM_FORMAT_YVU420
:
5713 case DRM_FORMAT_NV12
:
5714 case DRM_FORMAT_NV21
:
5720 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5723 * drm_rotation_simplify() - Try to simplify the rotation
5724 * @rotation: Rotation to be simplified
5725 * @supported_rotations: Supported rotations
5727 * Attempt to simplify the rotation to a form that is supported.
5728 * Eg. if the hardware supports everything except DRM_REFLECT_X
5729 * one could call this function like this:
5731 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5732 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5733 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5735 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5736 * transforms the hardware supports, this function may not
5737 * be able to produce a supported transform, so the caller should
5738 * check the result afterwards.
5740 unsigned int drm_rotation_simplify(unsigned int rotation
,
5741 unsigned int supported_rotations
)
5743 if (rotation
& ~supported_rotations
) {
5744 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5745 rotation
= (rotation
& DRM_REFLECT_MASK
) |
5746 BIT((ffs(rotation
& DRM_ROTATE_MASK
) + 1) % 4);
5751 EXPORT_SYMBOL(drm_rotation_simplify
);
5754 * drm_mode_config_init - initialize DRM mode_configuration structure
5757 * Initialize @dev's mode_config structure, used for tracking the graphics
5758 * configuration of @dev.
5760 * Since this initializes the modeset locks, no locking is possible. Which is no
5761 * problem, since this should happen single threaded at init time. It is the
5762 * driver's problem to ensure this guarantee.
5765 void drm_mode_config_init(struct drm_device
*dev
)
5767 mutex_init(&dev
->mode_config
.mutex
);
5768 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5769 mutex_init(&dev
->mode_config
.idr_mutex
);
5770 mutex_init(&dev
->mode_config
.fb_lock
);
5771 mutex_init(&dev
->mode_config
.blob_lock
);
5772 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5773 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5774 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5775 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5776 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5777 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5778 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5779 idr_init(&dev
->mode_config
.crtc_idr
);
5780 idr_init(&dev
->mode_config
.tile_idr
);
5781 ida_init(&dev
->mode_config
.connector_ida
);
5783 drm_modeset_lock_all(dev
);
5784 drm_mode_create_standard_properties(dev
);
5785 drm_modeset_unlock_all(dev
);
5787 /* Just to be sure */
5788 dev
->mode_config
.num_fb
= 0;
5789 dev
->mode_config
.num_connector
= 0;
5790 dev
->mode_config
.num_crtc
= 0;
5791 dev
->mode_config
.num_encoder
= 0;
5792 dev
->mode_config
.num_overlay_plane
= 0;
5793 dev
->mode_config
.num_total_plane
= 0;
5795 EXPORT_SYMBOL(drm_mode_config_init
);
5798 * drm_mode_config_cleanup - free up DRM mode_config info
5801 * Free up all the connectors and CRTCs associated with this DRM device, then
5802 * free up the framebuffers and associated buffer objects.
5804 * Note that since this /should/ happen single-threaded at driver/device
5805 * teardown time, no locking is required. It's the driver's job to ensure that
5806 * this guarantee actually holds true.
5808 * FIXME: cleanup any dangling user buffer objects too
5810 void drm_mode_config_cleanup(struct drm_device
*dev
)
5812 struct drm_connector
*connector
, *ot
;
5813 struct drm_crtc
*crtc
, *ct
;
5814 struct drm_encoder
*encoder
, *enct
;
5815 struct drm_framebuffer
*fb
, *fbt
;
5816 struct drm_property
*property
, *pt
;
5817 struct drm_property_blob
*blob
, *bt
;
5818 struct drm_plane
*plane
, *plt
;
5820 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5822 encoder
->funcs
->destroy(encoder
);
5825 list_for_each_entry_safe(connector
, ot
,
5826 &dev
->mode_config
.connector_list
, head
) {
5827 connector
->funcs
->destroy(connector
);
5830 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5832 drm_property_destroy(dev
, property
);
5835 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5837 drm_property_unreference_blob(blob
);
5841 * Single-threaded teardown context, so it's not required to grab the
5842 * fb_lock to protect against concurrent fb_list access. Contrary, it
5843 * would actually deadlock with the drm_framebuffer_cleanup function.
5845 * Also, if there are any framebuffers left, that's a driver leak now,
5846 * so politely WARN about this.
5848 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5849 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5850 drm_framebuffer_free(&fb
->refcount
);
5853 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5855 plane
->funcs
->destroy(plane
);
5858 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5859 crtc
->funcs
->destroy(crtc
);
5862 ida_destroy(&dev
->mode_config
.connector_ida
);
5863 idr_destroy(&dev
->mode_config
.tile_idr
);
5864 idr_destroy(&dev
->mode_config
.crtc_idr
);
5865 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5867 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5869 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5870 unsigned int supported_rotations
)
5872 static const struct drm_prop_enum_list props
[] = {
5873 { DRM_ROTATE_0
, "rotate-0" },
5874 { DRM_ROTATE_90
, "rotate-90" },
5875 { DRM_ROTATE_180
, "rotate-180" },
5876 { DRM_ROTATE_270
, "rotate-270" },
5877 { DRM_REFLECT_X
, "reflect-x" },
5878 { DRM_REFLECT_Y
, "reflect-y" },
5881 return drm_property_create_bitmask(dev
, 0, "rotation",
5882 props
, ARRAY_SIZE(props
),
5883 supported_rotations
);
5885 EXPORT_SYMBOL(drm_mode_create_rotation_property
);
5890 * Tile groups are used to represent tiled monitors with a unique
5891 * integer identifier. Tiled monitors using DisplayID v1.3 have
5892 * a unique 8-byte handle, we store this in a tile group, so we
5893 * have a common identifier for all tiles in a monitor group.
5895 static void drm_tile_group_free(struct kref
*kref
)
5897 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
5898 struct drm_device
*dev
= tg
->dev
;
5899 mutex_lock(&dev
->mode_config
.idr_mutex
);
5900 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
5901 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5906 * drm_mode_put_tile_group - drop a reference to a tile group.
5908 * @tg: tile group to drop reference to.
5910 * drop reference to tile group and free if 0.
5912 void drm_mode_put_tile_group(struct drm_device
*dev
,
5913 struct drm_tile_group
*tg
)
5915 kref_put(&tg
->refcount
, drm_tile_group_free
);
5919 * drm_mode_get_tile_group - get a reference to an existing tile group
5921 * @topology: 8-bytes unique per monitor.
5923 * Use the unique bytes to get a reference to an existing tile group.
5926 * tile group or NULL if not found.
5928 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
5931 struct drm_tile_group
*tg
;
5933 mutex_lock(&dev
->mode_config
.idr_mutex
);
5934 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
5935 if (!memcmp(tg
->group_data
, topology
, 8)) {
5936 if (!kref_get_unless_zero(&tg
->refcount
))
5938 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5942 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5945 EXPORT_SYMBOL(drm_mode_get_tile_group
);
5948 * drm_mode_create_tile_group - create a tile group from a displayid description
5950 * @topology: 8-bytes unique per monitor.
5952 * Create a tile group for the unique monitor, and get a unique
5953 * identifier for the tile group.
5956 * new tile group or error.
5958 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
5961 struct drm_tile_group
*tg
;
5964 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
5966 return ERR_PTR(-ENOMEM
);
5968 kref_init(&tg
->refcount
);
5969 memcpy(tg
->group_data
, topology
, 8);
5972 mutex_lock(&dev
->mode_config
.idr_mutex
);
5973 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
5981 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5984 EXPORT_SYMBOL(drm_mode_create_tile_group
);