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
;
921 connector
->connector_type
= connector_type
;
922 connector
->connector_type_id
=
923 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
924 if (connector
->connector_type_id
< 0) {
925 ret
= connector
->connector_type_id
;
929 kasprintf(GFP_KERNEL
, "%s-%d",
930 drm_connector_enum_list
[connector_type
].name
,
931 connector
->connector_type_id
);
932 if (!connector
->name
) {
937 INIT_LIST_HEAD(&connector
->probed_modes
);
938 INIT_LIST_HEAD(&connector
->modes
);
939 connector
->edid_blob_ptr
= NULL
;
940 connector
->status
= connector_status_unknown
;
942 drm_connector_get_cmdline_mode(connector
);
944 /* We should add connectors at the end to avoid upsetting the connector
946 list_add_tail(&connector
->head
, &config
->connector_list
);
947 config
->num_connector
++;
949 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
950 drm_object_attach_property(&connector
->base
,
951 config
->edid_property
,
954 drm_object_attach_property(&connector
->base
,
955 config
->dpms_property
, 0);
957 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
958 drm_object_attach_property(&connector
->base
, config
->prop_crtc_id
, 0);
961 connector
->debugfs_entry
= NULL
;
965 drm_mode_object_put(dev
, &connector
->base
);
968 drm_modeset_unlock_all(dev
);
972 EXPORT_SYMBOL(drm_connector_init
);
975 * drm_connector_cleanup - cleans up an initialised connector
976 * @connector: connector to cleanup
978 * Cleans up the connector but doesn't free the object.
980 void drm_connector_cleanup(struct drm_connector
*connector
)
982 struct drm_device
*dev
= connector
->dev
;
983 struct drm_display_mode
*mode
, *t
;
985 if (connector
->tile_group
) {
986 drm_mode_put_tile_group(dev
, connector
->tile_group
);
987 connector
->tile_group
= NULL
;
990 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
991 drm_mode_remove(connector
, mode
);
993 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
994 drm_mode_remove(connector
, mode
);
996 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
997 connector
->connector_type_id
);
999 kfree(connector
->display_info
.bus_formats
);
1000 drm_mode_object_put(dev
, &connector
->base
);
1001 kfree(connector
->name
);
1002 connector
->name
= NULL
;
1003 list_del(&connector
->head
);
1004 dev
->mode_config
.num_connector
--;
1006 WARN_ON(connector
->state
&& !connector
->funcs
->atomic_destroy_state
);
1007 if (connector
->state
&& connector
->funcs
->atomic_destroy_state
)
1008 connector
->funcs
->atomic_destroy_state(connector
,
1011 memset(connector
, 0, sizeof(*connector
));
1013 EXPORT_SYMBOL(drm_connector_cleanup
);
1016 * drm_connector_index - find the index of a registered connector
1017 * @connector: connector to find index for
1019 * Given a registered connector, return the index of that connector within a DRM
1020 * device's list of connectors.
1022 unsigned int drm_connector_index(struct drm_connector
*connector
)
1024 unsigned int index
= 0;
1025 struct drm_connector
*tmp
;
1026 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
1028 WARN_ON(!drm_modeset_is_locked(&config
->connection_mutex
));
1030 drm_for_each_connector(tmp
, connector
->dev
) {
1031 if (tmp
== connector
)
1039 EXPORT_SYMBOL(drm_connector_index
);
1042 * drm_connector_register - register a connector
1043 * @connector: the connector to register
1045 * Register userspace interfaces for a connector
1048 * Zero on success, error code on failure.
1050 int drm_connector_register(struct drm_connector
*connector
)
1054 drm_mode_object_register(connector
->dev
, &connector
->base
);
1056 ret
= drm_sysfs_connector_add(connector
);
1060 ret
= drm_debugfs_connector_add(connector
);
1062 drm_sysfs_connector_remove(connector
);
1068 EXPORT_SYMBOL(drm_connector_register
);
1071 * drm_connector_unregister - unregister a connector
1072 * @connector: the connector to unregister
1074 * Unregister userspace interfaces for a connector
1076 void drm_connector_unregister(struct drm_connector
*connector
)
1078 drm_sysfs_connector_remove(connector
);
1079 drm_debugfs_connector_remove(connector
);
1081 EXPORT_SYMBOL(drm_connector_unregister
);
1085 * drm_connector_unplug_all - unregister connector userspace interfaces
1088 * This function unregisters all connector userspace interfaces in sysfs. Should
1089 * be call when the device is disconnected, e.g. from an usb driver's
1090 * ->disconnect callback.
1092 void drm_connector_unplug_all(struct drm_device
*dev
)
1094 struct drm_connector
*connector
;
1096 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1097 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1098 drm_connector_unregister(connector
);
1101 EXPORT_SYMBOL(drm_connector_unplug_all
);
1104 * drm_encoder_init - Init a preallocated encoder
1106 * @encoder: the encoder to init
1107 * @funcs: callbacks for this encoder
1108 * @encoder_type: user visible type of the encoder
1109 * @name: printf style format string for the encoder name, or NULL for default name
1111 * Initialises a preallocated encoder. Encoder should be
1112 * subclassed as part of driver encoder objects.
1115 * Zero on success, error code on failure.
1117 int drm_encoder_init(struct drm_device
*dev
,
1118 struct drm_encoder
*encoder
,
1119 const struct drm_encoder_funcs
*funcs
,
1120 int encoder_type
, const char *name
, ...)
1124 drm_modeset_lock_all(dev
);
1126 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1131 encoder
->encoder_type
= encoder_type
;
1132 encoder
->funcs
= funcs
;
1137 encoder
->name
= kvasprintf(GFP_KERNEL
, name
, ap
);
1140 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1141 drm_encoder_enum_list
[encoder_type
].name
,
1144 if (!encoder
->name
) {
1149 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1150 dev
->mode_config
.num_encoder
++;
1154 drm_mode_object_put(dev
, &encoder
->base
);
1157 drm_modeset_unlock_all(dev
);
1161 EXPORT_SYMBOL(drm_encoder_init
);
1164 * drm_encoder_cleanup - cleans up an initialised encoder
1165 * @encoder: encoder to cleanup
1167 * Cleans up the encoder but doesn't free the object.
1169 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1171 struct drm_device
*dev
= encoder
->dev
;
1173 drm_modeset_lock_all(dev
);
1174 drm_mode_object_put(dev
, &encoder
->base
);
1175 kfree(encoder
->name
);
1176 list_del(&encoder
->head
);
1177 dev
->mode_config
.num_encoder
--;
1178 drm_modeset_unlock_all(dev
);
1180 memset(encoder
, 0, sizeof(*encoder
));
1182 EXPORT_SYMBOL(drm_encoder_cleanup
);
1184 static unsigned int drm_num_planes(struct drm_device
*dev
)
1186 unsigned int num
= 0;
1187 struct drm_plane
*tmp
;
1189 drm_for_each_plane(tmp
, dev
) {
1197 * drm_universal_plane_init - Initialize a new universal plane object
1199 * @plane: plane object to init
1200 * @possible_crtcs: bitmask of possible CRTCs
1201 * @funcs: callbacks for the new plane
1202 * @formats: array of supported formats (%DRM_FORMAT_*)
1203 * @format_count: number of elements in @formats
1204 * @type: type of plane (overlay, primary, cursor)
1205 * @name: printf style format string for the plane name, or NULL for default name
1207 * Initializes a plane object of type @type.
1210 * Zero on success, error code on failure.
1212 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1213 unsigned long possible_crtcs
,
1214 const struct drm_plane_funcs
*funcs
,
1215 const uint32_t *formats
, unsigned int format_count
,
1216 enum drm_plane_type type
,
1217 const char *name
, ...)
1219 struct drm_mode_config
*config
= &dev
->mode_config
;
1222 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1226 drm_modeset_lock_init(&plane
->mutex
);
1228 plane
->base
.properties
= &plane
->properties
;
1230 plane
->funcs
= funcs
;
1231 plane
->format_types
= kmalloc_array(format_count
, sizeof(uint32_t),
1233 if (!plane
->format_types
) {
1234 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1235 drm_mode_object_put(dev
, &plane
->base
);
1243 plane
->name
= kvasprintf(GFP_KERNEL
, name
, ap
);
1246 plane
->name
= kasprintf(GFP_KERNEL
, "plane-%d",
1247 drm_num_planes(dev
));
1250 kfree(plane
->format_types
);
1251 drm_mode_object_put(dev
, &plane
->base
);
1255 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1256 plane
->format_count
= format_count
;
1257 plane
->possible_crtcs
= possible_crtcs
;
1260 list_add_tail(&plane
->head
, &config
->plane_list
);
1261 config
->num_total_plane
++;
1262 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1263 config
->num_overlay_plane
++;
1265 drm_object_attach_property(&plane
->base
,
1266 config
->plane_type_property
,
1269 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
1270 drm_object_attach_property(&plane
->base
, config
->prop_fb_id
, 0);
1271 drm_object_attach_property(&plane
->base
, config
->prop_crtc_id
, 0);
1272 drm_object_attach_property(&plane
->base
, config
->prop_crtc_x
, 0);
1273 drm_object_attach_property(&plane
->base
, config
->prop_crtc_y
, 0);
1274 drm_object_attach_property(&plane
->base
, config
->prop_crtc_w
, 0);
1275 drm_object_attach_property(&plane
->base
, config
->prop_crtc_h
, 0);
1276 drm_object_attach_property(&plane
->base
, config
->prop_src_x
, 0);
1277 drm_object_attach_property(&plane
->base
, config
->prop_src_y
, 0);
1278 drm_object_attach_property(&plane
->base
, config
->prop_src_w
, 0);
1279 drm_object_attach_property(&plane
->base
, config
->prop_src_h
, 0);
1284 EXPORT_SYMBOL(drm_universal_plane_init
);
1287 * drm_plane_init - Initialize a legacy plane
1289 * @plane: plane object to init
1290 * @possible_crtcs: bitmask of possible CRTCs
1291 * @funcs: callbacks for the new plane
1292 * @formats: array of supported formats (%DRM_FORMAT_*)
1293 * @format_count: number of elements in @formats
1294 * @is_primary: plane type (primary vs overlay)
1296 * Legacy API to initialize a DRM plane.
1298 * New drivers should call drm_universal_plane_init() instead.
1301 * Zero on success, error code on failure.
1303 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1304 unsigned long possible_crtcs
,
1305 const struct drm_plane_funcs
*funcs
,
1306 const uint32_t *formats
, unsigned int format_count
,
1309 enum drm_plane_type type
;
1311 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1312 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1313 formats
, format_count
, type
, NULL
);
1315 EXPORT_SYMBOL(drm_plane_init
);
1318 * drm_plane_cleanup - Clean up the core plane usage
1319 * @plane: plane to cleanup
1321 * This function cleans up @plane and removes it from the DRM mode setting
1322 * core. Note that the function does *not* free the plane structure itself,
1323 * this is the responsibility of the caller.
1325 void drm_plane_cleanup(struct drm_plane
*plane
)
1327 struct drm_device
*dev
= plane
->dev
;
1329 drm_modeset_lock_all(dev
);
1330 kfree(plane
->format_types
);
1331 drm_mode_object_put(dev
, &plane
->base
);
1333 BUG_ON(list_empty(&plane
->head
));
1335 list_del(&plane
->head
);
1336 dev
->mode_config
.num_total_plane
--;
1337 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1338 dev
->mode_config
.num_overlay_plane
--;
1339 drm_modeset_unlock_all(dev
);
1341 WARN_ON(plane
->state
&& !plane
->funcs
->atomic_destroy_state
);
1342 if (plane
->state
&& plane
->funcs
->atomic_destroy_state
)
1343 plane
->funcs
->atomic_destroy_state(plane
, plane
->state
);
1347 memset(plane
, 0, sizeof(*plane
));
1349 EXPORT_SYMBOL(drm_plane_cleanup
);
1352 * drm_plane_index - find the index of a registered plane
1353 * @plane: plane to find index for
1355 * Given a registered plane, return the index of that CRTC within a DRM
1356 * device's list of planes.
1358 unsigned int drm_plane_index(struct drm_plane
*plane
)
1360 unsigned int index
= 0;
1361 struct drm_plane
*tmp
;
1363 drm_for_each_plane(tmp
, plane
->dev
) {
1372 EXPORT_SYMBOL(drm_plane_index
);
1375 * drm_plane_from_index - find the registered plane at an index
1377 * @idx: index of registered plane to find for
1379 * Given a plane index, return the registered plane from DRM device's
1380 * list of planes with matching index.
1383 drm_plane_from_index(struct drm_device
*dev
, int idx
)
1385 struct drm_plane
*plane
;
1388 drm_for_each_plane(plane
, dev
) {
1395 EXPORT_SYMBOL(drm_plane_from_index
);
1398 * drm_plane_force_disable - Forcibly disable a plane
1399 * @plane: plane to disable
1401 * Forces the plane to be disabled.
1403 * Used when the plane's current framebuffer is destroyed,
1404 * and when restoring fbdev mode.
1406 void drm_plane_force_disable(struct drm_plane
*plane
)
1413 plane
->old_fb
= plane
->fb
;
1414 ret
= plane
->funcs
->disable_plane(plane
);
1416 DRM_ERROR("failed to disable plane with busy fb\n");
1417 plane
->old_fb
= NULL
;
1420 /* disconnect the plane from the fb and crtc: */
1421 drm_framebuffer_unreference(plane
->old_fb
);
1422 plane
->old_fb
= NULL
;
1426 EXPORT_SYMBOL(drm_plane_force_disable
);
1428 static int drm_mode_create_standard_properties(struct drm_device
*dev
)
1430 struct drm_property
*prop
;
1433 * Standard properties (apply to all connectors)
1435 prop
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1436 DRM_MODE_PROP_IMMUTABLE
,
1440 dev
->mode_config
.edid_property
= prop
;
1442 prop
= drm_property_create_enum(dev
, 0,
1443 "DPMS", drm_dpms_enum_list
,
1444 ARRAY_SIZE(drm_dpms_enum_list
));
1447 dev
->mode_config
.dpms_property
= prop
;
1449 prop
= drm_property_create(dev
,
1450 DRM_MODE_PROP_BLOB
|
1451 DRM_MODE_PROP_IMMUTABLE
,
1455 dev
->mode_config
.path_property
= prop
;
1457 prop
= drm_property_create(dev
,
1458 DRM_MODE_PROP_BLOB
|
1459 DRM_MODE_PROP_IMMUTABLE
,
1463 dev
->mode_config
.tile_property
= prop
;
1465 prop
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1466 "type", drm_plane_type_enum_list
,
1467 ARRAY_SIZE(drm_plane_type_enum_list
));
1470 dev
->mode_config
.plane_type_property
= prop
;
1472 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1473 "SRC_X", 0, UINT_MAX
);
1476 dev
->mode_config
.prop_src_x
= prop
;
1478 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1479 "SRC_Y", 0, UINT_MAX
);
1482 dev
->mode_config
.prop_src_y
= prop
;
1484 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1485 "SRC_W", 0, UINT_MAX
);
1488 dev
->mode_config
.prop_src_w
= prop
;
1490 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1491 "SRC_H", 0, UINT_MAX
);
1494 dev
->mode_config
.prop_src_h
= prop
;
1496 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1497 "CRTC_X", INT_MIN
, INT_MAX
);
1500 dev
->mode_config
.prop_crtc_x
= prop
;
1502 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1503 "CRTC_Y", INT_MIN
, INT_MAX
);
1506 dev
->mode_config
.prop_crtc_y
= prop
;
1508 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1509 "CRTC_W", 0, INT_MAX
);
1512 dev
->mode_config
.prop_crtc_w
= prop
;
1514 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1515 "CRTC_H", 0, INT_MAX
);
1518 dev
->mode_config
.prop_crtc_h
= prop
;
1520 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1521 "FB_ID", DRM_MODE_OBJECT_FB
);
1524 dev
->mode_config
.prop_fb_id
= prop
;
1526 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1527 "CRTC_ID", DRM_MODE_OBJECT_CRTC
);
1530 dev
->mode_config
.prop_crtc_id
= prop
;
1532 prop
= drm_property_create_bool(dev
, DRM_MODE_PROP_ATOMIC
,
1536 dev
->mode_config
.prop_active
= prop
;
1538 prop
= drm_property_create(dev
,
1539 DRM_MODE_PROP_ATOMIC
| DRM_MODE_PROP_BLOB
,
1543 dev
->mode_config
.prop_mode_id
= prop
;
1549 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1552 * Called by a driver the first time a DVI-I connector is made.
1554 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1556 struct drm_property
*dvi_i_selector
;
1557 struct drm_property
*dvi_i_subconnector
;
1559 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1563 drm_property_create_enum(dev
, 0,
1564 "select subconnector",
1565 drm_dvi_i_select_enum_list
,
1566 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1567 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1569 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1571 drm_dvi_i_subconnector_enum_list
,
1572 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1573 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1577 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1580 * drm_create_tv_properties - create TV specific connector properties
1582 * @num_modes: number of different TV formats (modes) supported
1583 * @modes: array of pointers to strings containing name of each format
1585 * Called by a driver's TV initialization routine, this function creates
1586 * the TV specific connector properties for a given device. Caller is
1587 * responsible for allocating a list of format names and passing them to
1590 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1591 unsigned int num_modes
,
1592 const char * const modes
[])
1594 struct drm_property
*tv_selector
;
1595 struct drm_property
*tv_subconnector
;
1598 if (dev
->mode_config
.tv_select_subconnector_property
)
1602 * Basic connector properties
1604 tv_selector
= drm_property_create_enum(dev
, 0,
1605 "select subconnector",
1606 drm_tv_select_enum_list
,
1607 ARRAY_SIZE(drm_tv_select_enum_list
));
1611 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1614 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1616 drm_tv_subconnector_enum_list
,
1617 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1618 if (!tv_subconnector
)
1620 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1623 * Other, TV specific properties: margins & TV modes.
1625 dev
->mode_config
.tv_left_margin_property
=
1626 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1627 if (!dev
->mode_config
.tv_left_margin_property
)
1630 dev
->mode_config
.tv_right_margin_property
=
1631 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1632 if (!dev
->mode_config
.tv_right_margin_property
)
1635 dev
->mode_config
.tv_top_margin_property
=
1636 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1637 if (!dev
->mode_config
.tv_top_margin_property
)
1640 dev
->mode_config
.tv_bottom_margin_property
=
1641 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1642 if (!dev
->mode_config
.tv_bottom_margin_property
)
1645 dev
->mode_config
.tv_mode_property
=
1646 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1648 if (!dev
->mode_config
.tv_mode_property
)
1651 for (i
= 0; i
< num_modes
; i
++)
1652 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1655 dev
->mode_config
.tv_brightness_property
=
1656 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1657 if (!dev
->mode_config
.tv_brightness_property
)
1660 dev
->mode_config
.tv_contrast_property
=
1661 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1662 if (!dev
->mode_config
.tv_contrast_property
)
1665 dev
->mode_config
.tv_flicker_reduction_property
=
1666 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1667 if (!dev
->mode_config
.tv_flicker_reduction_property
)
1670 dev
->mode_config
.tv_overscan_property
=
1671 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1672 if (!dev
->mode_config
.tv_overscan_property
)
1675 dev
->mode_config
.tv_saturation_property
=
1676 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1677 if (!dev
->mode_config
.tv_saturation_property
)
1680 dev
->mode_config
.tv_hue_property
=
1681 drm_property_create_range(dev
, 0, "hue", 0, 100);
1682 if (!dev
->mode_config
.tv_hue_property
)
1689 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1692 * drm_mode_create_scaling_mode_property - create scaling mode property
1695 * Called by a driver the first time it's needed, must be attached to desired
1698 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1700 struct drm_property
*scaling_mode
;
1702 if (dev
->mode_config
.scaling_mode_property
)
1706 drm_property_create_enum(dev
, 0, "scaling mode",
1707 drm_scaling_mode_enum_list
,
1708 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1710 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1714 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1717 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1720 * Called by a driver the first time it's needed, must be attached to desired
1724 * Zero on success, negative errno on failure.
1726 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1728 if (dev
->mode_config
.aspect_ratio_property
)
1731 dev
->mode_config
.aspect_ratio_property
=
1732 drm_property_create_enum(dev
, 0, "aspect ratio",
1733 drm_aspect_ratio_enum_list
,
1734 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1736 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1741 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1744 * drm_mode_create_dirty_property - create dirty property
1747 * Called by a driver the first time it's needed, must be attached to desired
1750 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1752 struct drm_property
*dirty_info
;
1754 if (dev
->mode_config
.dirty_info_property
)
1758 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1760 drm_dirty_info_enum_list
,
1761 ARRAY_SIZE(drm_dirty_info_enum_list
));
1762 dev
->mode_config
.dirty_info_property
= dirty_info
;
1766 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1769 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1772 * Create the the suggested x/y offset property for connectors.
1774 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1776 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1779 dev
->mode_config
.suggested_x_property
=
1780 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1782 dev
->mode_config
.suggested_y_property
=
1783 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1785 if (dev
->mode_config
.suggested_x_property
== NULL
||
1786 dev
->mode_config
.suggested_y_property
== NULL
)
1790 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1793 * drm_mode_getresources - get graphics configuration
1794 * @dev: drm device for the ioctl
1795 * @data: data pointer for the ioctl
1796 * @file_priv: drm file for the ioctl call
1798 * Construct a set of configuration description structures and return
1799 * them to the user, including CRTC, connector and framebuffer configuration.
1801 * Called by the user via ioctl.
1804 * Zero on success, negative errno on failure.
1806 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1807 struct drm_file
*file_priv
)
1809 struct drm_mode_card_res
*card_res
= data
;
1810 struct list_head
*lh
;
1811 struct drm_framebuffer
*fb
;
1812 struct drm_connector
*connector
;
1813 struct drm_crtc
*crtc
;
1814 struct drm_encoder
*encoder
;
1816 int connector_count
= 0;
1819 int encoder_count
= 0;
1821 uint32_t __user
*fb_id
;
1822 uint32_t __user
*crtc_id
;
1823 uint32_t __user
*connector_id
;
1824 uint32_t __user
*encoder_id
;
1826 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1830 mutex_lock(&file_priv
->fbs_lock
);
1832 * For the non-control nodes we need to limit the list of resources
1833 * by IDs in the group list for this node
1835 list_for_each(lh
, &file_priv
->fbs
)
1838 /* handle this in 4 parts */
1840 if (card_res
->count_fbs
>= fb_count
) {
1842 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1843 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1844 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1845 mutex_unlock(&file_priv
->fbs_lock
);
1851 card_res
->count_fbs
= fb_count
;
1852 mutex_unlock(&file_priv
->fbs_lock
);
1854 /* mode_config.mutex protects the connector list against e.g. DP MST
1855 * connector hot-adding. CRTC/Plane lists are invariant. */
1856 mutex_lock(&dev
->mode_config
.mutex
);
1857 drm_for_each_crtc(crtc
, dev
)
1860 drm_for_each_connector(connector
, dev
)
1863 drm_for_each_encoder(encoder
, dev
)
1866 card_res
->max_height
= dev
->mode_config
.max_height
;
1867 card_res
->min_height
= dev
->mode_config
.min_height
;
1868 card_res
->max_width
= dev
->mode_config
.max_width
;
1869 card_res
->min_width
= dev
->mode_config
.min_width
;
1872 if (card_res
->count_crtcs
>= crtc_count
) {
1874 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1875 drm_for_each_crtc(crtc
, dev
) {
1876 DRM_DEBUG_KMS("[CRTC:%d:%s]\n",
1877 crtc
->base
.id
, crtc
->name
);
1878 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1885 card_res
->count_crtcs
= crtc_count
;
1888 if (card_res
->count_encoders
>= encoder_count
) {
1890 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1891 drm_for_each_encoder(encoder
, dev
) {
1892 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1894 if (put_user(encoder
->base
.id
, encoder_id
+
1902 card_res
->count_encoders
= encoder_count
;
1905 if (card_res
->count_connectors
>= connector_count
) {
1907 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1908 drm_for_each_connector(connector
, dev
) {
1909 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1912 if (put_user(connector
->base
.id
,
1913 connector_id
+ copied
)) {
1920 card_res
->count_connectors
= connector_count
;
1922 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1923 card_res
->count_connectors
, card_res
->count_encoders
);
1926 mutex_unlock(&dev
->mode_config
.mutex
);
1931 * drm_mode_getcrtc - get CRTC configuration
1932 * @dev: drm device for the ioctl
1933 * @data: data pointer for the ioctl
1934 * @file_priv: drm file for the ioctl call
1936 * Construct a CRTC configuration structure to return to the user.
1938 * Called by the user via ioctl.
1941 * Zero on success, negative errno on failure.
1943 int drm_mode_getcrtc(struct drm_device
*dev
,
1944 void *data
, struct drm_file
*file_priv
)
1946 struct drm_mode_crtc
*crtc_resp
= data
;
1947 struct drm_crtc
*crtc
;
1949 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1952 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
1956 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
1957 crtc_resp
->gamma_size
= crtc
->gamma_size
;
1958 if (crtc
->primary
->fb
)
1959 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
1961 crtc_resp
->fb_id
= 0;
1964 crtc_resp
->x
= crtc
->primary
->state
->src_x
>> 16;
1965 crtc_resp
->y
= crtc
->primary
->state
->src_y
>> 16;
1966 if (crtc
->state
->enable
) {
1967 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->state
->mode
);
1968 crtc_resp
->mode_valid
= 1;
1971 crtc_resp
->mode_valid
= 0;
1974 crtc_resp
->x
= crtc
->x
;
1975 crtc_resp
->y
= crtc
->y
;
1976 if (crtc
->enabled
) {
1977 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
1978 crtc_resp
->mode_valid
= 1;
1981 crtc_resp
->mode_valid
= 0;
1984 drm_modeset_unlock_crtc(crtc
);
1989 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1990 const struct drm_file
*file_priv
)
1993 * If user-space hasn't configured the driver to expose the stereo 3D
1994 * modes, don't expose them.
1996 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
2002 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
2004 /* For atomic drivers only state objects are synchronously updated and
2005 * protected by modeset locks, so check those first. */
2006 if (connector
->state
)
2007 return connector
->state
->best_encoder
;
2008 return connector
->encoder
;
2011 /* helper for getconnector and getproperties ioctls */
2012 static int get_properties(struct drm_mode_object
*obj
, bool atomic
,
2013 uint32_t __user
*prop_ptr
, uint64_t __user
*prop_values
,
2014 uint32_t *arg_count_props
)
2019 props_count
= obj
->properties
->count
;
2021 props_count
-= obj
->properties
->atomic_count
;
2023 if ((*arg_count_props
>= props_count
) && props_count
) {
2024 for (i
= 0, copied
= 0; copied
< props_count
; i
++) {
2025 struct drm_property
*prop
= obj
->properties
->properties
[i
];
2028 if ((prop
->flags
& DRM_MODE_PROP_ATOMIC
) && !atomic
)
2031 ret
= drm_object_property_get_value(obj
, prop
, &val
);
2035 if (put_user(prop
->base
.id
, prop_ptr
+ copied
))
2038 if (put_user(val
, prop_values
+ copied
))
2044 *arg_count_props
= props_count
;
2050 * drm_mode_getconnector - get connector configuration
2051 * @dev: drm device for the ioctl
2052 * @data: data pointer for the ioctl
2053 * @file_priv: drm file for the ioctl call
2055 * Construct a connector configuration structure to return to the user.
2057 * Called by the user via ioctl.
2060 * Zero on success, negative errno on failure.
2062 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
2063 struct drm_file
*file_priv
)
2065 struct drm_mode_get_connector
*out_resp
= data
;
2066 struct drm_connector
*connector
;
2067 struct drm_encoder
*encoder
;
2068 struct drm_display_mode
*mode
;
2070 int encoders_count
= 0;
2074 struct drm_mode_modeinfo u_mode
;
2075 struct drm_mode_modeinfo __user
*mode_ptr
;
2076 uint32_t __user
*encoder_ptr
;
2078 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2081 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
2083 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
2085 mutex_lock(&dev
->mode_config
.mutex
);
2087 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
2093 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++)
2094 if (connector
->encoder_ids
[i
] != 0)
2097 if (out_resp
->count_modes
== 0) {
2098 connector
->funcs
->fill_modes(connector
,
2099 dev
->mode_config
.max_width
,
2100 dev
->mode_config
.max_height
);
2103 /* delayed so we get modes regardless of pre-fill_modes state */
2104 list_for_each_entry(mode
, &connector
->modes
, head
)
2105 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2108 out_resp
->connector_id
= connector
->base
.id
;
2109 out_resp
->connector_type
= connector
->connector_type
;
2110 out_resp
->connector_type_id
= connector
->connector_type_id
;
2111 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2112 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2113 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2114 out_resp
->connection
= connector
->status
;
2116 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2117 encoder
= drm_connector_get_encoder(connector
);
2119 out_resp
->encoder_id
= encoder
->base
.id
;
2121 out_resp
->encoder_id
= 0;
2124 * This ioctl is called twice, once to determine how much space is
2125 * needed, and the 2nd time to fill it.
2127 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2129 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2130 list_for_each_entry(mode
, &connector
->modes
, head
) {
2131 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2134 drm_mode_convert_to_umode(&u_mode
, mode
);
2135 if (copy_to_user(mode_ptr
+ copied
,
2136 &u_mode
, sizeof(u_mode
))) {
2143 out_resp
->count_modes
= mode_count
;
2145 ret
= get_properties(&connector
->base
, file_priv
->atomic
,
2146 (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
),
2147 (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
),
2148 &out_resp
->count_props
);
2152 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2154 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2155 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2156 if (connector
->encoder_ids
[i
] != 0) {
2157 if (put_user(connector
->encoder_ids
[i
],
2158 encoder_ptr
+ copied
)) {
2166 out_resp
->count_encoders
= encoders_count
;
2169 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2172 mutex_unlock(&dev
->mode_config
.mutex
);
2177 static struct drm_crtc
*drm_encoder_get_crtc(struct drm_encoder
*encoder
)
2179 struct drm_connector
*connector
;
2180 struct drm_device
*dev
= encoder
->dev
;
2181 bool uses_atomic
= false;
2183 /* For atomic drivers only state objects are synchronously updated and
2184 * protected by modeset locks, so check those first. */
2185 drm_for_each_connector(connector
, dev
) {
2186 if (!connector
->state
)
2191 if (connector
->state
->best_encoder
!= encoder
)
2194 return connector
->state
->crtc
;
2197 /* Don't return stale data (e.g. pending async disable). */
2201 return encoder
->crtc
;
2205 * drm_mode_getencoder - get encoder configuration
2206 * @dev: drm device for the ioctl
2207 * @data: data pointer for the ioctl
2208 * @file_priv: drm file for the ioctl call
2210 * Construct a encoder configuration structure to return to the user.
2212 * Called by the user via ioctl.
2215 * Zero on success, negative errno on failure.
2217 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2218 struct drm_file
*file_priv
)
2220 struct drm_mode_get_encoder
*enc_resp
= data
;
2221 struct drm_encoder
*encoder
;
2222 struct drm_crtc
*crtc
;
2224 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2227 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2231 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2232 crtc
= drm_encoder_get_crtc(encoder
);
2234 enc_resp
->crtc_id
= crtc
->base
.id
;
2236 enc_resp
->crtc_id
= 0;
2237 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2239 enc_resp
->encoder_type
= encoder
->encoder_type
;
2240 enc_resp
->encoder_id
= encoder
->base
.id
;
2241 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2242 enc_resp
->possible_clones
= encoder
->possible_clones
;
2248 * drm_mode_getplane_res - enumerate all plane resources
2251 * @file_priv: DRM file info
2253 * Construct a list of plane ids to return to the user.
2255 * Called by the user via ioctl.
2258 * Zero on success, negative errno on failure.
2260 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2261 struct drm_file
*file_priv
)
2263 struct drm_mode_get_plane_res
*plane_resp
= data
;
2264 struct drm_mode_config
*config
;
2265 struct drm_plane
*plane
;
2266 uint32_t __user
*plane_ptr
;
2268 unsigned num_planes
;
2270 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2273 config
= &dev
->mode_config
;
2275 if (file_priv
->universal_planes
)
2276 num_planes
= config
->num_total_plane
;
2278 num_planes
= config
->num_overlay_plane
;
2281 * This ioctl is called twice, once to determine how much space is
2282 * needed, and the 2nd time to fill it.
2285 (plane_resp
->count_planes
>= num_planes
)) {
2286 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2288 /* Plane lists are invariant, no locking needed. */
2289 drm_for_each_plane(plane
, dev
) {
2291 * Unless userspace set the 'universal planes'
2292 * capability bit, only advertise overlays.
2294 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2295 !file_priv
->universal_planes
)
2298 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2303 plane_resp
->count_planes
= num_planes
;
2309 * drm_mode_getplane - get plane configuration
2312 * @file_priv: DRM file info
2314 * Construct a plane configuration structure to return to the user.
2316 * Called by the user via ioctl.
2319 * Zero on success, negative errno on failure.
2321 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2322 struct drm_file
*file_priv
)
2324 struct drm_mode_get_plane
*plane_resp
= data
;
2325 struct drm_plane
*plane
;
2326 uint32_t __user
*format_ptr
;
2328 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2331 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2335 drm_modeset_lock(&plane
->mutex
, NULL
);
2337 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2339 plane_resp
->crtc_id
= 0;
2342 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2344 plane_resp
->fb_id
= 0;
2345 drm_modeset_unlock(&plane
->mutex
);
2347 plane_resp
->plane_id
= plane
->base
.id
;
2348 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2349 plane_resp
->gamma_size
= 0;
2352 * This ioctl is called twice, once to determine how much space is
2353 * needed, and the 2nd time to fill it.
2355 if (plane
->format_count
&&
2356 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2357 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2358 if (copy_to_user(format_ptr
,
2359 plane
->format_types
,
2360 sizeof(uint32_t) * plane
->format_count
)) {
2364 plane_resp
->count_format_types
= plane
->format_count
;
2370 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2371 * @plane: plane to check for format support
2372 * @format: the pixel format
2375 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2378 int drm_plane_check_pixel_format(const struct drm_plane
*plane
, u32 format
)
2382 for (i
= 0; i
< plane
->format_count
; i
++) {
2383 if (format
== plane
->format_types
[i
])
2390 static int check_src_coords(uint32_t src_x
, uint32_t src_y
,
2391 uint32_t src_w
, uint32_t src_h
,
2392 const struct drm_framebuffer
*fb
)
2394 unsigned int fb_width
, fb_height
;
2396 fb_width
= fb
->width
<< 16;
2397 fb_height
= fb
->height
<< 16;
2399 /* Make sure source coordinates are inside the fb. */
2400 if (src_w
> fb_width
||
2401 src_x
> fb_width
- src_w
||
2402 src_h
> fb_height
||
2403 src_y
> fb_height
- src_h
) {
2404 DRM_DEBUG_KMS("Invalid source coordinates "
2405 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2406 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2407 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2408 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2409 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2417 * setplane_internal - setplane handler for internal callers
2419 * Note that we assume an extra reference has already been taken on fb. If the
2420 * update fails, this reference will be dropped before return; if it succeeds,
2421 * the previous framebuffer (if any) will be unreferenced instead.
2423 * src_{x,y,w,h} are provided in 16.16 fixed point format
2425 static int __setplane_internal(struct drm_plane
*plane
,
2426 struct drm_crtc
*crtc
,
2427 struct drm_framebuffer
*fb
,
2428 int32_t crtc_x
, int32_t crtc_y
,
2429 uint32_t crtc_w
, uint32_t crtc_h
,
2430 /* src_{x,y,w,h} values are 16.16 fixed point */
2431 uint32_t src_x
, uint32_t src_y
,
2432 uint32_t src_w
, uint32_t src_h
)
2436 /* No fb means shut it down */
2438 plane
->old_fb
= plane
->fb
;
2439 ret
= plane
->funcs
->disable_plane(plane
);
2444 plane
->old_fb
= NULL
;
2449 /* Check whether this plane is usable on this CRTC */
2450 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2451 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2456 /* Check whether this plane supports the fb pixel format. */
2457 ret
= drm_plane_check_pixel_format(plane
, fb
->pixel_format
);
2459 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2460 drm_get_format_name(fb
->pixel_format
));
2464 /* Give drivers some help against integer overflows */
2465 if (crtc_w
> INT_MAX
||
2466 crtc_x
> INT_MAX
- (int32_t) crtc_w
||
2468 crtc_y
> INT_MAX
- (int32_t) crtc_h
) {
2469 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2470 crtc_w
, crtc_h
, crtc_x
, crtc_y
);
2475 ret
= check_src_coords(src_x
, src_y
, src_w
, src_h
, fb
);
2479 plane
->old_fb
= plane
->fb
;
2480 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2481 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2482 src_x
, src_y
, src_w
, src_h
);
2488 plane
->old_fb
= NULL
;
2493 drm_framebuffer_unreference(fb
);
2495 drm_framebuffer_unreference(plane
->old_fb
);
2496 plane
->old_fb
= NULL
;
2501 static int setplane_internal(struct drm_plane
*plane
,
2502 struct drm_crtc
*crtc
,
2503 struct drm_framebuffer
*fb
,
2504 int32_t crtc_x
, int32_t crtc_y
,
2505 uint32_t crtc_w
, uint32_t crtc_h
,
2506 /* src_{x,y,w,h} values are 16.16 fixed point */
2507 uint32_t src_x
, uint32_t src_y
,
2508 uint32_t src_w
, uint32_t src_h
)
2512 drm_modeset_lock_all(plane
->dev
);
2513 ret
= __setplane_internal(plane
, crtc
, fb
,
2514 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2515 src_x
, src_y
, src_w
, src_h
);
2516 drm_modeset_unlock_all(plane
->dev
);
2522 * drm_mode_setplane - configure a plane's configuration
2524 * @data: ioctl data*
2525 * @file_priv: DRM file info
2527 * Set plane configuration, including placement, fb, scaling, and other factors.
2528 * Or pass a NULL fb to disable (planes may be disabled without providing a
2532 * Zero on success, negative errno on failure.
2534 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2535 struct drm_file
*file_priv
)
2537 struct drm_mode_set_plane
*plane_req
= data
;
2538 struct drm_plane
*plane
;
2539 struct drm_crtc
*crtc
= NULL
;
2540 struct drm_framebuffer
*fb
= NULL
;
2542 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2546 * First, find the plane, crtc, and fb objects. If not available,
2547 * we don't bother to call the driver.
2549 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
2551 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2552 plane_req
->plane_id
);
2556 if (plane_req
->fb_id
) {
2557 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2559 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2564 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
2566 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2567 plane_req
->crtc_id
);
2573 * setplane_internal will take care of deref'ing either the old or new
2574 * framebuffer depending on success.
2576 return setplane_internal(plane
, crtc
, fb
,
2577 plane_req
->crtc_x
, plane_req
->crtc_y
,
2578 plane_req
->crtc_w
, plane_req
->crtc_h
,
2579 plane_req
->src_x
, plane_req
->src_y
,
2580 plane_req
->src_w
, plane_req
->src_h
);
2584 * drm_mode_set_config_internal - helper to call ->set_config
2585 * @set: modeset config to set
2587 * This is a little helper to wrap internal calls to the ->set_config driver
2588 * interface. The only thing it adds is correct refcounting dance.
2591 * Zero on success, negative errno on failure.
2593 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2595 struct drm_crtc
*crtc
= set
->crtc
;
2596 struct drm_framebuffer
*fb
;
2597 struct drm_crtc
*tmp
;
2601 * NOTE: ->set_config can also disable other crtcs (if we steal all
2602 * connectors from it), hence we need to refcount the fbs across all
2603 * crtcs. Atomic modeset will have saner semantics ...
2605 drm_for_each_crtc(tmp
, crtc
->dev
)
2606 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2610 ret
= crtc
->funcs
->set_config(set
);
2612 crtc
->primary
->crtc
= crtc
;
2613 crtc
->primary
->fb
= fb
;
2616 drm_for_each_crtc(tmp
, crtc
->dev
) {
2617 if (tmp
->primary
->fb
)
2618 drm_framebuffer_reference(tmp
->primary
->fb
);
2619 if (tmp
->primary
->old_fb
)
2620 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2621 tmp
->primary
->old_fb
= NULL
;
2626 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2629 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2630 * @mode: mode to query
2631 * @hdisplay: hdisplay value to fill in
2632 * @vdisplay: vdisplay value to fill in
2634 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2635 * the appropriate layout.
2637 void drm_crtc_get_hv_timing(const struct drm_display_mode
*mode
,
2638 int *hdisplay
, int *vdisplay
)
2640 struct drm_display_mode adjusted
;
2642 drm_mode_copy(&adjusted
, mode
);
2643 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE_ONLY
);
2644 *hdisplay
= adjusted
.crtc_hdisplay
;
2645 *vdisplay
= adjusted
.crtc_vdisplay
;
2647 EXPORT_SYMBOL(drm_crtc_get_hv_timing
);
2650 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2652 * @crtc: CRTC that framebuffer will be displayed on
2655 * @mode: mode that framebuffer will be displayed under
2656 * @fb: framebuffer to check size of
2658 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2660 const struct drm_display_mode
*mode
,
2661 const struct drm_framebuffer
*fb
)
2664 int hdisplay
, vdisplay
;
2666 drm_crtc_get_hv_timing(mode
, &hdisplay
, &vdisplay
);
2669 crtc
->primary
->state
->rotation
& (BIT(DRM_ROTATE_90
) |
2670 BIT(DRM_ROTATE_270
)))
2671 swap(hdisplay
, vdisplay
);
2673 return check_src_coords(x
<< 16, y
<< 16,
2674 hdisplay
<< 16, vdisplay
<< 16, fb
);
2676 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2679 * drm_mode_setcrtc - set CRTC configuration
2680 * @dev: drm device for the ioctl
2681 * @data: data pointer for the ioctl
2682 * @file_priv: drm file for the ioctl call
2684 * Build a new CRTC configuration based on user request.
2686 * Called by the user via ioctl.
2689 * Zero on success, negative errno on failure.
2691 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2692 struct drm_file
*file_priv
)
2694 struct drm_mode_config
*config
= &dev
->mode_config
;
2695 struct drm_mode_crtc
*crtc_req
= data
;
2696 struct drm_crtc
*crtc
;
2697 struct drm_connector
**connector_set
= NULL
, *connector
;
2698 struct drm_framebuffer
*fb
= NULL
;
2699 struct drm_display_mode
*mode
= NULL
;
2700 struct drm_mode_set set
;
2701 uint32_t __user
*set_connectors_ptr
;
2705 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2709 * Universal plane src offsets are only 16.16, prevent havoc for
2710 * drivers using universal plane code internally.
2712 if (crtc_req
->x
& 0xffff0000 || crtc_req
->y
& 0xffff0000)
2715 drm_modeset_lock_all(dev
);
2716 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2718 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2722 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc
->base
.id
, crtc
->name
);
2724 if (crtc_req
->mode_valid
) {
2725 /* If we have a mode we need a framebuffer. */
2726 /* If we pass -1, set the mode with the currently bound fb */
2727 if (crtc_req
->fb_id
== -1) {
2728 if (!crtc
->primary
->fb
) {
2729 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2733 fb
= crtc
->primary
->fb
;
2734 /* Make refcounting symmetric with the lookup path. */
2735 drm_framebuffer_reference(fb
);
2737 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2739 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2746 mode
= drm_mode_create(dev
);
2752 ret
= drm_mode_convert_umode(mode
, &crtc_req
->mode
);
2754 DRM_DEBUG_KMS("Invalid mode\n");
2758 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2761 * Check whether the primary plane supports the fb pixel format.
2762 * Drivers not implementing the universal planes API use a
2763 * default formats list provided by the DRM core which doesn't
2764 * match real hardware capabilities. Skip the check in that
2767 if (!crtc
->primary
->format_default
) {
2768 ret
= drm_plane_check_pixel_format(crtc
->primary
,
2771 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2772 drm_get_format_name(fb
->pixel_format
));
2777 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2784 if (crtc_req
->count_connectors
== 0 && mode
) {
2785 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2790 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2791 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2792 crtc_req
->count_connectors
);
2797 if (crtc_req
->count_connectors
> 0) {
2800 /* Avoid unbounded kernel memory allocation */
2801 if (crtc_req
->count_connectors
> config
->num_connector
) {
2806 connector_set
= kmalloc_array(crtc_req
->count_connectors
,
2807 sizeof(struct drm_connector
*),
2809 if (!connector_set
) {
2814 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2815 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2816 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2821 connector
= drm_connector_find(dev
, out_id
);
2823 DRM_DEBUG_KMS("Connector id %d unknown\n",
2828 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2832 connector_set
[i
] = connector
;
2837 set
.x
= crtc_req
->x
;
2838 set
.y
= crtc_req
->y
;
2840 set
.connectors
= connector_set
;
2841 set
.num_connectors
= crtc_req
->count_connectors
;
2843 ret
= drm_mode_set_config_internal(&set
);
2847 drm_framebuffer_unreference(fb
);
2849 kfree(connector_set
);
2850 drm_mode_destroy(dev
, mode
);
2851 drm_modeset_unlock_all(dev
);
2856 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2857 * universal plane handler call
2858 * @crtc: crtc to update cursor for
2859 * @req: data pointer for the ioctl
2860 * @file_priv: drm file for the ioctl call
2862 * Legacy cursor ioctl's work directly with driver buffer handles. To
2863 * translate legacy ioctl calls into universal plane handler calls, we need to
2864 * wrap the native buffer handle in a drm_framebuffer.
2866 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2867 * buffer with a pitch of 4*width; the universal plane interface should be used
2868 * directly in cases where the hardware can support other buffer settings and
2869 * userspace wants to make use of these capabilities.
2872 * Zero on success, negative errno on failure.
2874 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2875 struct drm_mode_cursor2
*req
,
2876 struct drm_file
*file_priv
)
2878 struct drm_device
*dev
= crtc
->dev
;
2879 struct drm_framebuffer
*fb
= NULL
;
2880 struct drm_mode_fb_cmd2 fbreq
= {
2881 .width
= req
->width
,
2882 .height
= req
->height
,
2883 .pixel_format
= DRM_FORMAT_ARGB8888
,
2884 .pitches
= { req
->width
* 4 },
2885 .handles
= { req
->handle
},
2887 int32_t crtc_x
, crtc_y
;
2888 uint32_t crtc_w
= 0, crtc_h
= 0;
2889 uint32_t src_w
= 0, src_h
= 0;
2892 BUG_ON(!crtc
->cursor
);
2893 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2896 * Obtain fb we'll be using (either new or existing) and take an extra
2897 * reference to it if fb != null. setplane will take care of dropping
2898 * the reference if the plane update fails.
2900 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2902 fb
= internal_framebuffer_create(dev
, &fbreq
, file_priv
);
2904 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2911 fb
= crtc
->cursor
->fb
;
2913 drm_framebuffer_reference(fb
);
2916 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2920 crtc_x
= crtc
->cursor_x
;
2921 crtc_y
= crtc
->cursor_y
;
2926 crtc_h
= fb
->height
;
2927 src_w
= fb
->width
<< 16;
2928 src_h
= fb
->height
<< 16;
2932 * setplane_internal will take care of deref'ing either the old or new
2933 * framebuffer depending on success.
2935 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2936 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2937 0, 0, src_w
, src_h
);
2939 /* Update successful; save new cursor position, if necessary */
2940 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2941 crtc
->cursor_x
= req
->x
;
2942 crtc
->cursor_y
= req
->y
;
2948 static int drm_mode_cursor_common(struct drm_device
*dev
,
2949 struct drm_mode_cursor2
*req
,
2950 struct drm_file
*file_priv
)
2952 struct drm_crtc
*crtc
;
2955 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2958 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2961 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2963 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2968 * If this crtc has a universal cursor plane, call that plane's update
2969 * handler rather than using legacy cursor handlers.
2971 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
2973 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2977 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2978 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2982 /* Turns off the cursor if handle is 0 */
2983 if (crtc
->funcs
->cursor_set2
)
2984 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2985 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2987 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2988 req
->width
, req
->height
);
2991 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2992 if (crtc
->funcs
->cursor_move
) {
2993 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
3000 drm_modeset_unlock_crtc(crtc
);
3008 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3009 * @dev: drm device for the ioctl
3010 * @data: data pointer for the ioctl
3011 * @file_priv: drm file for the ioctl call
3013 * Set the cursor configuration based on user request.
3015 * Called by the user via ioctl.
3018 * Zero on success, negative errno on failure.
3020 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
3021 void *data
, struct drm_file
*file_priv
)
3023 struct drm_mode_cursor
*req
= data
;
3024 struct drm_mode_cursor2 new_req
;
3026 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
3027 new_req
.hot_x
= new_req
.hot_y
= 0;
3029 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
3033 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3034 * @dev: drm device for the ioctl
3035 * @data: data pointer for the ioctl
3036 * @file_priv: drm file for the ioctl call
3038 * Set the cursor configuration based on user request. This implements the 2nd
3039 * version of the cursor ioctl, which allows userspace to additionally specify
3040 * the hotspot of the pointer.
3042 * Called by the user via ioctl.
3045 * Zero on success, negative errno on failure.
3047 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
3048 void *data
, struct drm_file
*file_priv
)
3050 struct drm_mode_cursor2
*req
= data
;
3052 return drm_mode_cursor_common(dev
, req
, file_priv
);
3056 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3057 * @bpp: bits per pixels
3058 * @depth: bit depth per pixel
3060 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3061 * Useful in fbdev emulation code, since that deals in those values.
3063 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
3069 fmt
= DRM_FORMAT_C8
;
3073 fmt
= DRM_FORMAT_XRGB1555
;
3075 fmt
= DRM_FORMAT_RGB565
;
3078 fmt
= DRM_FORMAT_RGB888
;
3082 fmt
= DRM_FORMAT_XRGB8888
;
3083 else if (depth
== 30)
3084 fmt
= DRM_FORMAT_XRGB2101010
;
3086 fmt
= DRM_FORMAT_ARGB8888
;
3089 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3090 fmt
= DRM_FORMAT_XRGB8888
;
3096 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
3099 * drm_mode_addfb - add an FB to the graphics configuration
3100 * @dev: drm device for the ioctl
3101 * @data: data pointer for the ioctl
3102 * @file_priv: drm file for the ioctl call
3104 * Add a new FB to the specified CRTC, given a user request. This is the
3105 * original addfb ioctl which only supported RGB formats.
3107 * Called by the user via ioctl.
3110 * Zero on success, negative errno on failure.
3112 int drm_mode_addfb(struct drm_device
*dev
,
3113 void *data
, struct drm_file
*file_priv
)
3115 struct drm_mode_fb_cmd
*or = data
;
3116 struct drm_mode_fb_cmd2 r
= {};
3119 /* convert to new format and call new ioctl */
3120 r
.fb_id
= or->fb_id
;
3121 r
.width
= or->width
;
3122 r
.height
= or->height
;
3123 r
.pitches
[0] = or->pitch
;
3124 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
3125 r
.handles
[0] = or->handle
;
3127 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
3131 or->fb_id
= r
.fb_id
;
3136 static int format_check(const struct drm_mode_fb_cmd2
*r
)
3138 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3142 case DRM_FORMAT_RGB332
:
3143 case DRM_FORMAT_BGR233
:
3144 case DRM_FORMAT_XRGB4444
:
3145 case DRM_FORMAT_XBGR4444
:
3146 case DRM_FORMAT_RGBX4444
:
3147 case DRM_FORMAT_BGRX4444
:
3148 case DRM_FORMAT_ARGB4444
:
3149 case DRM_FORMAT_ABGR4444
:
3150 case DRM_FORMAT_RGBA4444
:
3151 case DRM_FORMAT_BGRA4444
:
3152 case DRM_FORMAT_XRGB1555
:
3153 case DRM_FORMAT_XBGR1555
:
3154 case DRM_FORMAT_RGBX5551
:
3155 case DRM_FORMAT_BGRX5551
:
3156 case DRM_FORMAT_ARGB1555
:
3157 case DRM_FORMAT_ABGR1555
:
3158 case DRM_FORMAT_RGBA5551
:
3159 case DRM_FORMAT_BGRA5551
:
3160 case DRM_FORMAT_RGB565
:
3161 case DRM_FORMAT_BGR565
:
3162 case DRM_FORMAT_RGB888
:
3163 case DRM_FORMAT_BGR888
:
3164 case DRM_FORMAT_XRGB8888
:
3165 case DRM_FORMAT_XBGR8888
:
3166 case DRM_FORMAT_RGBX8888
:
3167 case DRM_FORMAT_BGRX8888
:
3168 case DRM_FORMAT_ARGB8888
:
3169 case DRM_FORMAT_ABGR8888
:
3170 case DRM_FORMAT_RGBA8888
:
3171 case DRM_FORMAT_BGRA8888
:
3172 case DRM_FORMAT_XRGB2101010
:
3173 case DRM_FORMAT_XBGR2101010
:
3174 case DRM_FORMAT_RGBX1010102
:
3175 case DRM_FORMAT_BGRX1010102
:
3176 case DRM_FORMAT_ARGB2101010
:
3177 case DRM_FORMAT_ABGR2101010
:
3178 case DRM_FORMAT_RGBA1010102
:
3179 case DRM_FORMAT_BGRA1010102
:
3180 case DRM_FORMAT_YUYV
:
3181 case DRM_FORMAT_YVYU
:
3182 case DRM_FORMAT_UYVY
:
3183 case DRM_FORMAT_VYUY
:
3184 case DRM_FORMAT_AYUV
:
3185 case DRM_FORMAT_NV12
:
3186 case DRM_FORMAT_NV21
:
3187 case DRM_FORMAT_NV16
:
3188 case DRM_FORMAT_NV61
:
3189 case DRM_FORMAT_NV24
:
3190 case DRM_FORMAT_NV42
:
3191 case DRM_FORMAT_YUV410
:
3192 case DRM_FORMAT_YVU410
:
3193 case DRM_FORMAT_YUV411
:
3194 case DRM_FORMAT_YVU411
:
3195 case DRM_FORMAT_YUV420
:
3196 case DRM_FORMAT_YVU420
:
3197 case DRM_FORMAT_YUV422
:
3198 case DRM_FORMAT_YVU422
:
3199 case DRM_FORMAT_YUV444
:
3200 case DRM_FORMAT_YVU444
:
3203 DRM_DEBUG_KMS("invalid pixel format %s\n",
3204 drm_get_format_name(r
->pixel_format
));
3209 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3211 int ret
, hsub
, vsub
, num_planes
, i
;
3213 ret
= format_check(r
);
3215 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3216 drm_get_format_name(r
->pixel_format
));
3220 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3221 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3222 num_planes
= drm_format_num_planes(r
->pixel_format
);
3224 if (r
->width
== 0 || r
->width
% hsub
) {
3225 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3229 if (r
->height
== 0 || r
->height
% vsub
) {
3230 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3234 for (i
= 0; i
< num_planes
; i
++) {
3235 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3236 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3237 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3239 if (!r
->handles
[i
]) {
3240 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3244 if ((uint64_t) width
* cpp
> UINT_MAX
)
3247 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3250 if (r
->pitches
[i
] < width
* cpp
) {
3251 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3255 if (r
->modifier
[i
] && !(r
->flags
& DRM_MODE_FB_MODIFIERS
)) {
3256 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3261 /* modifier specific checks: */
3262 switch (r
->modifier
[i
]) {
3263 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE
:
3264 /* NOTE: the pitch restriction may be lifted later if it turns
3265 * out that no hw has this restriction:
3267 if (r
->pixel_format
!= DRM_FORMAT_NV12
||
3268 width
% 128 || height
% 32 ||
3269 r
->pitches
[i
] % 128) {
3270 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i
);
3280 for (i
= num_planes
; i
< 4; i
++) {
3281 if (r
->modifier
[i
]) {
3282 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i
);
3286 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3287 if (!(r
->flags
& DRM_MODE_FB_MODIFIERS
))
3290 if (r
->handles
[i
]) {
3291 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i
);
3295 if (r
->pitches
[i
]) {
3296 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i
);
3300 if (r
->offsets
[i
]) {
3301 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i
);
3309 static struct drm_framebuffer
*
3310 internal_framebuffer_create(struct drm_device
*dev
,
3311 const struct drm_mode_fb_cmd2
*r
,
3312 struct drm_file
*file_priv
)
3314 struct drm_mode_config
*config
= &dev
->mode_config
;
3315 struct drm_framebuffer
*fb
;
3318 if (r
->flags
& ~(DRM_MODE_FB_INTERLACED
| DRM_MODE_FB_MODIFIERS
)) {
3319 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3320 return ERR_PTR(-EINVAL
);
3323 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3324 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3325 r
->width
, config
->min_width
, config
->max_width
);
3326 return ERR_PTR(-EINVAL
);
3328 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3329 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3330 r
->height
, config
->min_height
, config
->max_height
);
3331 return ERR_PTR(-EINVAL
);
3334 if (r
->flags
& DRM_MODE_FB_MODIFIERS
&&
3335 !dev
->mode_config
.allow_fb_modifiers
) {
3336 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3337 return ERR_PTR(-EINVAL
);
3340 ret
= framebuffer_check(r
);
3342 return ERR_PTR(ret
);
3344 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3346 DRM_DEBUG_KMS("could not create framebuffer\n");
3354 * drm_mode_addfb2 - add an FB to the graphics configuration
3355 * @dev: drm device for the ioctl
3356 * @data: data pointer for the ioctl
3357 * @file_priv: drm file for the ioctl call
3359 * Add a new FB to the specified CRTC, given a user request with format. This is
3360 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3361 * and uses fourcc codes as pixel format specifiers.
3363 * Called by the user via ioctl.
3366 * Zero on success, negative errno on failure.
3368 int drm_mode_addfb2(struct drm_device
*dev
,
3369 void *data
, struct drm_file
*file_priv
)
3371 struct drm_mode_fb_cmd2
*r
= data
;
3372 struct drm_framebuffer
*fb
;
3374 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3377 fb
= internal_framebuffer_create(dev
, r
, file_priv
);
3381 /* Transfer ownership to the filp for reaping on close */
3383 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3384 mutex_lock(&file_priv
->fbs_lock
);
3385 r
->fb_id
= fb
->base
.id
;
3386 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3387 mutex_unlock(&file_priv
->fbs_lock
);
3393 * drm_mode_rmfb - remove an FB from the configuration
3394 * @dev: drm device for the ioctl
3395 * @data: data pointer for the ioctl
3396 * @file_priv: drm file for the ioctl call
3398 * Remove the FB specified by the user.
3400 * Called by the user via ioctl.
3403 * Zero on success, negative errno on failure.
3405 int drm_mode_rmfb(struct drm_device
*dev
,
3406 void *data
, struct drm_file
*file_priv
)
3408 struct drm_framebuffer
*fb
= NULL
;
3409 struct drm_framebuffer
*fbl
= NULL
;
3410 uint32_t *id
= data
;
3413 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3416 mutex_lock(&file_priv
->fbs_lock
);
3417 mutex_lock(&dev
->mode_config
.fb_lock
);
3418 fb
= __drm_framebuffer_lookup(dev
, *id
);
3422 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3428 list_del_init(&fb
->filp_head
);
3429 mutex_unlock(&dev
->mode_config
.fb_lock
);
3430 mutex_unlock(&file_priv
->fbs_lock
);
3432 drm_framebuffer_unreference(fb
);
3437 mutex_unlock(&dev
->mode_config
.fb_lock
);
3438 mutex_unlock(&file_priv
->fbs_lock
);
3444 * drm_mode_getfb - get FB info
3445 * @dev: drm device for the ioctl
3446 * @data: data pointer for the ioctl
3447 * @file_priv: drm file for the ioctl call
3449 * Lookup the FB given its ID and return info about it.
3451 * Called by the user via ioctl.
3454 * Zero on success, negative errno on failure.
3456 int drm_mode_getfb(struct drm_device
*dev
,
3457 void *data
, struct drm_file
*file_priv
)
3459 struct drm_mode_fb_cmd
*r
= data
;
3460 struct drm_framebuffer
*fb
;
3463 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3466 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3470 r
->height
= fb
->height
;
3471 r
->width
= fb
->width
;
3472 r
->depth
= fb
->depth
;
3473 r
->bpp
= fb
->bits_per_pixel
;
3474 r
->pitch
= fb
->pitches
[0];
3475 if (fb
->funcs
->create_handle
) {
3476 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3477 drm_is_control_client(file_priv
)) {
3478 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3481 /* GET_FB() is an unprivileged ioctl so we must not
3482 * return a buffer-handle to non-master processes! For
3483 * backwards-compatibility reasons, we cannot make
3484 * GET_FB() privileged, so just return an invalid handle
3485 * for non-masters. */
3493 drm_framebuffer_unreference(fb
);
3499 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3500 * @dev: drm device for the ioctl
3501 * @data: data pointer for the ioctl
3502 * @file_priv: drm file for the ioctl call
3504 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3505 * rectangle list. Generic userspace which does frontbuffer rendering must call
3506 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3507 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3509 * Modesetting drivers which always update the frontbuffer do not need to
3510 * implement the corresponding ->dirty framebuffer callback.
3512 * Called by the user via ioctl.
3515 * Zero on success, negative errno on failure.
3517 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3518 void *data
, struct drm_file
*file_priv
)
3520 struct drm_clip_rect __user
*clips_ptr
;
3521 struct drm_clip_rect
*clips
= NULL
;
3522 struct drm_mode_fb_dirty_cmd
*r
= data
;
3523 struct drm_framebuffer
*fb
;
3528 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3531 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3535 num_clips
= r
->num_clips
;
3536 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3538 if (!num_clips
!= !clips_ptr
) {
3543 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3545 /* If userspace annotates copy, clips must come in pairs */
3546 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3551 if (num_clips
&& clips_ptr
) {
3552 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3556 clips
= kcalloc(num_clips
, sizeof(*clips
), GFP_KERNEL
);
3562 ret
= copy_from_user(clips
, clips_ptr
,
3563 num_clips
* sizeof(*clips
));
3570 if (fb
->funcs
->dirty
) {
3571 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3580 drm_framebuffer_unreference(fb
);
3587 * drm_fb_release - remove and free the FBs on this file
3588 * @priv: drm file for the ioctl
3590 * Destroy all the FBs associated with @filp.
3592 * Called by the user via ioctl.
3595 * Zero on success, negative errno on failure.
3597 void drm_fb_release(struct drm_file
*priv
)
3599 struct drm_framebuffer
*fb
, *tfb
;
3602 * When the file gets released that means no one else can access the fb
3603 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3604 * avoid upsetting lockdep since the universal cursor code adds a
3605 * framebuffer while holding mutex locks.
3607 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3608 * locks is impossible here since no one else but this function can get
3611 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3612 list_del_init(&fb
->filp_head
);
3614 /* This drops the fpriv->fbs reference. */
3615 drm_framebuffer_unreference(fb
);
3620 * drm_property_create - create a new property type
3622 * @flags: flags specifying the property type
3623 * @name: name of the property
3624 * @num_values: number of pre-defined values
3626 * This creates a new generic drm property which can then be attached to a drm
3627 * object with drm_object_attach_property. The returned property object must be
3628 * freed with drm_property_destroy.
3630 * Note that the DRM core keeps a per-device list of properties and that, if
3631 * drm_mode_config_cleanup() is called, it will destroy all properties created
3635 * A pointer to the newly created property on success, NULL on failure.
3637 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3638 const char *name
, int num_values
)
3640 struct drm_property
*property
= NULL
;
3643 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3647 property
->dev
= dev
;
3650 property
->values
= kcalloc(num_values
, sizeof(uint64_t),
3652 if (!property
->values
)
3656 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3660 property
->flags
= flags
;
3661 property
->num_values
= num_values
;
3662 INIT_LIST_HEAD(&property
->enum_list
);
3665 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3666 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3669 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3671 WARN_ON(!drm_property_type_valid(property
));
3675 kfree(property
->values
);
3679 EXPORT_SYMBOL(drm_property_create
);
3682 * drm_property_create_enum - create a new enumeration property type
3684 * @flags: flags specifying the property type
3685 * @name: name of the property
3686 * @props: enumeration lists with property values
3687 * @num_values: number of pre-defined values
3689 * This creates a new generic drm property which can then be attached to a drm
3690 * object with drm_object_attach_property. The returned property object must be
3691 * freed with drm_property_destroy.
3693 * Userspace is only allowed to set one of the predefined values for enumeration
3697 * A pointer to the newly created property on success, NULL on failure.
3699 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3701 const struct drm_prop_enum_list
*props
,
3704 struct drm_property
*property
;
3707 flags
|= DRM_MODE_PROP_ENUM
;
3709 property
= drm_property_create(dev
, flags
, name
, num_values
);
3713 for (i
= 0; i
< num_values
; i
++) {
3714 ret
= drm_property_add_enum(property
, i
,
3718 drm_property_destroy(dev
, property
);
3725 EXPORT_SYMBOL(drm_property_create_enum
);
3728 * drm_property_create_bitmask - create a new bitmask property type
3730 * @flags: flags specifying the property type
3731 * @name: name of the property
3732 * @props: enumeration lists with property bitflags
3733 * @num_props: size of the @props array
3734 * @supported_bits: bitmask of all supported enumeration values
3736 * This creates a new bitmask drm property which can then be attached to a drm
3737 * object with drm_object_attach_property. The returned property object must be
3738 * freed with drm_property_destroy.
3740 * Compared to plain enumeration properties userspace is allowed to set any
3741 * or'ed together combination of the predefined property bitflag values
3744 * A pointer to the newly created property on success, NULL on failure.
3746 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3747 int flags
, const char *name
,
3748 const struct drm_prop_enum_list
*props
,
3750 uint64_t supported_bits
)
3752 struct drm_property
*property
;
3753 int i
, ret
, index
= 0;
3754 int num_values
= hweight64(supported_bits
);
3756 flags
|= DRM_MODE_PROP_BITMASK
;
3758 property
= drm_property_create(dev
, flags
, name
, num_values
);
3761 for (i
= 0; i
< num_props
; i
++) {
3762 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3765 if (WARN_ON(index
>= num_values
)) {
3766 drm_property_destroy(dev
, property
);
3770 ret
= drm_property_add_enum(property
, index
++,
3774 drm_property_destroy(dev
, property
);
3781 EXPORT_SYMBOL(drm_property_create_bitmask
);
3783 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3784 int flags
, const char *name
,
3785 uint64_t min
, uint64_t max
)
3787 struct drm_property
*property
;
3789 property
= drm_property_create(dev
, flags
, name
, 2);
3793 property
->values
[0] = min
;
3794 property
->values
[1] = max
;
3800 * drm_property_create_range - create a new unsigned ranged property type
3802 * @flags: flags specifying the property type
3803 * @name: name of the property
3804 * @min: minimum value of the property
3805 * @max: maximum value of the property
3807 * This creates a new generic drm property which can then be attached to a drm
3808 * object with drm_object_attach_property. The returned property object must be
3809 * freed with drm_property_destroy.
3811 * Userspace is allowed to set any unsigned integer value in the (min, max)
3815 * A pointer to the newly created property on success, NULL on failure.
3817 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3819 uint64_t min
, uint64_t max
)
3821 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3824 EXPORT_SYMBOL(drm_property_create_range
);
3827 * drm_property_create_signed_range - create a new signed ranged property type
3829 * @flags: flags specifying the property type
3830 * @name: name of the property
3831 * @min: minimum value of the property
3832 * @max: maximum value of the property
3834 * This creates a new generic drm property which can then be attached to a drm
3835 * object with drm_object_attach_property. The returned property object must be
3836 * freed with drm_property_destroy.
3838 * Userspace is allowed to set any signed integer value in the (min, max)
3842 * A pointer to the newly created property on success, NULL on failure.
3844 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3845 int flags
, const char *name
,
3846 int64_t min
, int64_t max
)
3848 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3849 name
, I642U64(min
), I642U64(max
));
3851 EXPORT_SYMBOL(drm_property_create_signed_range
);
3854 * drm_property_create_object - create a new object property type
3856 * @flags: flags specifying the property type
3857 * @name: name of the property
3858 * @type: object type from DRM_MODE_OBJECT_* defines
3860 * This creates a new generic drm property which can then be attached to a drm
3861 * object with drm_object_attach_property. The returned property object must be
3862 * freed with drm_property_destroy.
3864 * Userspace is only allowed to set this to any property value of the given
3865 * @type. Only useful for atomic properties, which is enforced.
3868 * A pointer to the newly created property on success, NULL on failure.
3870 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3871 int flags
, const char *name
, uint32_t type
)
3873 struct drm_property
*property
;
3875 flags
|= DRM_MODE_PROP_OBJECT
;
3877 if (WARN_ON(!(flags
& DRM_MODE_PROP_ATOMIC
)))
3880 property
= drm_property_create(dev
, flags
, name
, 1);
3884 property
->values
[0] = type
;
3888 EXPORT_SYMBOL(drm_property_create_object
);
3891 * drm_property_create_bool - create a new boolean property type
3893 * @flags: flags specifying the property type
3894 * @name: name of the property
3896 * This creates a new generic drm property which can then be attached to a drm
3897 * object with drm_object_attach_property. The returned property object must be
3898 * freed with drm_property_destroy.
3900 * This is implemented as a ranged property with only {0, 1} as valid values.
3903 * A pointer to the newly created property on success, NULL on failure.
3905 struct drm_property
*drm_property_create_bool(struct drm_device
*dev
, int flags
,
3908 return drm_property_create_range(dev
, flags
, name
, 0, 1);
3910 EXPORT_SYMBOL(drm_property_create_bool
);
3913 * drm_property_add_enum - add a possible value to an enumeration property
3914 * @property: enumeration property to change
3915 * @index: index of the new enumeration
3916 * @value: value of the new enumeration
3917 * @name: symbolic name of the new enumeration
3919 * This functions adds enumerations to a property.
3921 * It's use is deprecated, drivers should use one of the more specific helpers
3922 * to directly create the property with all enumerations already attached.
3925 * Zero on success, error code on failure.
3927 int drm_property_add_enum(struct drm_property
*property
, int index
,
3928 uint64_t value
, const char *name
)
3930 struct drm_property_enum
*prop_enum
;
3932 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3933 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3937 * Bitmask enum properties have the additional constraint of values
3940 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3944 if (!list_empty(&property
->enum_list
)) {
3945 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3946 if (prop_enum
->value
== value
) {
3947 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3948 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3954 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3958 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3959 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3960 prop_enum
->value
= value
;
3962 property
->values
[index
] = value
;
3963 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
3966 EXPORT_SYMBOL(drm_property_add_enum
);
3969 * drm_property_destroy - destroy a drm property
3971 * @property: property to destry
3973 * This function frees a property including any attached resources like
3974 * enumeration values.
3976 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3978 struct drm_property_enum
*prop_enum
, *pt
;
3980 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
3981 list_del(&prop_enum
->head
);
3985 if (property
->num_values
)
3986 kfree(property
->values
);
3987 drm_mode_object_put(dev
, &property
->base
);
3988 list_del(&property
->head
);
3991 EXPORT_SYMBOL(drm_property_destroy
);
3994 * drm_object_attach_property - attach a property to a modeset object
3995 * @obj: drm modeset object
3996 * @property: property to attach
3997 * @init_val: initial value of the property
3999 * This attaches the given property to the modeset object with the given initial
4000 * value. Currently this function cannot fail since the properties are stored in
4001 * a statically sized array.
4003 void drm_object_attach_property(struct drm_mode_object
*obj
,
4004 struct drm_property
*property
,
4007 int count
= obj
->properties
->count
;
4009 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
4010 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4011 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4012 "you see this message on the same object type.\n",
4017 obj
->properties
->properties
[count
] = property
;
4018 obj
->properties
->values
[count
] = init_val
;
4019 obj
->properties
->count
++;
4020 if (property
->flags
& DRM_MODE_PROP_ATOMIC
)
4021 obj
->properties
->atomic_count
++;
4023 EXPORT_SYMBOL(drm_object_attach_property
);
4026 * drm_object_property_set_value - set the value of a property
4027 * @obj: drm mode object to set property value for
4028 * @property: property to set
4029 * @val: value the property should be set to
4031 * This functions sets a given property on a given object. This function only
4032 * changes the software state of the property, it does not call into the
4033 * driver's ->set_property callback.
4036 * Zero on success, error code on failure.
4038 int drm_object_property_set_value(struct drm_mode_object
*obj
,
4039 struct drm_property
*property
, uint64_t val
)
4043 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4044 if (obj
->properties
->properties
[i
] == property
) {
4045 obj
->properties
->values
[i
] = val
;
4052 EXPORT_SYMBOL(drm_object_property_set_value
);
4055 * drm_object_property_get_value - retrieve the value of a property
4056 * @obj: drm mode object to get property value from
4057 * @property: property to retrieve
4058 * @val: storage for the property value
4060 * This function retrieves the softare state of the given property for the given
4061 * property. Since there is no driver callback to retrieve the current property
4062 * value this might be out of sync with the hardware, depending upon the driver
4066 * Zero on success, error code on failure.
4068 int drm_object_property_get_value(struct drm_mode_object
*obj
,
4069 struct drm_property
*property
, uint64_t *val
)
4073 /* read-only properties bypass atomic mechanism and still store
4074 * their value in obj->properties->values[].. mostly to avoid
4075 * having to deal w/ EDID and similar props in atomic paths:
4077 if (drm_core_check_feature(property
->dev
, DRIVER_ATOMIC
) &&
4078 !(property
->flags
& DRM_MODE_PROP_IMMUTABLE
))
4079 return drm_atomic_get_property(obj
, property
, val
);
4081 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4082 if (obj
->properties
->properties
[i
] == property
) {
4083 *val
= obj
->properties
->values
[i
];
4090 EXPORT_SYMBOL(drm_object_property_get_value
);
4093 * drm_mode_getproperty_ioctl - get the property metadata
4096 * @file_priv: DRM file info
4098 * This function retrieves the metadata for a given property, like the different
4099 * possible values for an enum property or the limits for a range property.
4101 * Blob properties are special
4103 * Called by the user via ioctl.
4106 * Zero on success, negative errno on failure.
4108 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
4109 void *data
, struct drm_file
*file_priv
)
4111 struct drm_mode_get_property
*out_resp
= data
;
4112 struct drm_property
*property
;
4114 int value_count
= 0;
4117 struct drm_property_enum
*prop_enum
;
4118 struct drm_mode_property_enum __user
*enum_ptr
;
4119 uint64_t __user
*values_ptr
;
4121 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4124 drm_modeset_lock_all(dev
);
4125 property
= drm_property_find(dev
, out_resp
->prop_id
);
4131 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4132 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4133 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
4137 value_count
= property
->num_values
;
4139 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
4140 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
4141 out_resp
->flags
= property
->flags
;
4143 if ((out_resp
->count_values
>= value_count
) && value_count
) {
4144 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
4145 for (i
= 0; i
< value_count
; i
++) {
4146 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
4152 out_resp
->count_values
= value_count
;
4154 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4155 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4156 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
4158 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
4159 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
4161 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
4166 if (copy_to_user(&enum_ptr
[copied
].name
,
4167 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
4174 out_resp
->count_enum_blobs
= enum_count
;
4178 * NOTE: The idea seems to have been to use this to read all the blob
4179 * property values. But nothing ever added them to the corresponding
4180 * list, userspace always used the special-purpose get_blob ioctl to
4181 * read the value for a blob property. It also doesn't make a lot of
4182 * sense to return values here when everything else is just metadata for
4183 * the property itself.
4185 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4186 out_resp
->count_enum_blobs
= 0;
4188 drm_modeset_unlock_all(dev
);
4193 * drm_property_create_blob - Create new blob property
4195 * Creates a new blob property for a specified DRM device, optionally
4198 * @dev: DRM device to create property for
4199 * @length: Length to allocate for blob data
4200 * @data: If specified, copies data into blob
4203 * New blob property with a single reference on success, or an ERR_PTR
4206 struct drm_property_blob
*
4207 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
4210 struct drm_property_blob
*blob
;
4213 if (!length
|| length
> ULONG_MAX
- sizeof(struct drm_property_blob
))
4214 return ERR_PTR(-EINVAL
);
4216 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
4218 return ERR_PTR(-ENOMEM
);
4220 /* This must be explicitly initialised, so we can safely call list_del
4221 * on it in the removal handler, even if it isn't in a file list. */
4222 INIT_LIST_HEAD(&blob
->head_file
);
4223 blob
->length
= length
;
4227 memcpy(blob
->data
, data
, length
);
4229 mutex_lock(&dev
->mode_config
.blob_lock
);
4231 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
4234 mutex_unlock(&dev
->mode_config
.blob_lock
);
4235 return ERR_PTR(-EINVAL
);
4238 kref_init(&blob
->refcount
);
4240 list_add_tail(&blob
->head_global
,
4241 &dev
->mode_config
.property_blob_list
);
4243 mutex_unlock(&dev
->mode_config
.blob_lock
);
4247 EXPORT_SYMBOL(drm_property_create_blob
);
4250 * drm_property_free_blob - Blob property destructor
4252 * Internal free function for blob properties; must not be used directly.
4256 static void drm_property_free_blob(struct kref
*kref
)
4258 struct drm_property_blob
*blob
=
4259 container_of(kref
, struct drm_property_blob
, refcount
);
4261 WARN_ON(!mutex_is_locked(&blob
->dev
->mode_config
.blob_lock
));
4263 list_del(&blob
->head_global
);
4264 list_del(&blob
->head_file
);
4265 drm_mode_object_put(blob
->dev
, &blob
->base
);
4271 * drm_property_unreference_blob - Unreference a blob property
4273 * Drop a reference on a blob property. May free the object.
4275 * @blob: Pointer to blob property
4277 void drm_property_unreference_blob(struct drm_property_blob
*blob
)
4279 struct drm_device
*dev
;
4286 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4288 if (kref_put_mutex(&blob
->refcount
, drm_property_free_blob
,
4289 &dev
->mode_config
.blob_lock
))
4290 mutex_unlock(&dev
->mode_config
.blob_lock
);
4292 might_lock(&dev
->mode_config
.blob_lock
);
4294 EXPORT_SYMBOL(drm_property_unreference_blob
);
4297 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4299 * Drop a reference on a blob property. May free the object. This must be
4300 * called with blob_lock held.
4302 * @blob: Pointer to blob property
4304 static void drm_property_unreference_blob_locked(struct drm_property_blob
*blob
)
4309 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4311 kref_put(&blob
->refcount
, drm_property_free_blob
);
4315 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4317 * @file_priv: destroy all blobs owned by this file handle
4319 void drm_property_destroy_user_blobs(struct drm_device
*dev
,
4320 struct drm_file
*file_priv
)
4322 struct drm_property_blob
*blob
, *bt
;
4324 mutex_lock(&dev
->mode_config
.blob_lock
);
4326 list_for_each_entry_safe(blob
, bt
, &file_priv
->blobs
, head_file
) {
4327 list_del_init(&blob
->head_file
);
4328 drm_property_unreference_blob_locked(blob
);
4331 mutex_unlock(&dev
->mode_config
.blob_lock
);
4335 * drm_property_reference_blob - Take a reference on an existing property
4337 * Take a new reference on an existing blob property.
4339 * @blob: Pointer to blob property
4341 struct drm_property_blob
*drm_property_reference_blob(struct drm_property_blob
*blob
)
4343 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4344 kref_get(&blob
->refcount
);
4347 EXPORT_SYMBOL(drm_property_reference_blob
);
4350 * Like drm_property_lookup_blob, but does not return an additional reference.
4351 * Must be called with blob_lock held.
4353 static struct drm_property_blob
*__drm_property_lookup_blob(struct drm_device
*dev
,
4356 struct drm_mode_object
*obj
= NULL
;
4357 struct drm_property_blob
*blob
;
4359 WARN_ON(!mutex_is_locked(&dev
->mode_config
.blob_lock
));
4361 mutex_lock(&dev
->mode_config
.idr_mutex
);
4362 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
4363 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_BLOB
) || (obj
->id
!= id
))
4366 blob
= obj_to_blob(obj
);
4367 mutex_unlock(&dev
->mode_config
.idr_mutex
);
4373 * drm_property_lookup_blob - look up a blob property and take a reference
4375 * @id: id of the blob property
4377 * If successful, this takes an additional reference to the blob property.
4378 * callers need to make sure to eventually unreference the returned property
4379 * again, using @drm_property_unreference_blob.
4381 struct drm_property_blob
*drm_property_lookup_blob(struct drm_device
*dev
,
4384 struct drm_property_blob
*blob
;
4386 mutex_lock(&dev
->mode_config
.blob_lock
);
4387 blob
= __drm_property_lookup_blob(dev
, id
);
4389 if (!kref_get_unless_zero(&blob
->refcount
))
4392 mutex_unlock(&dev
->mode_config
.blob_lock
);
4396 EXPORT_SYMBOL(drm_property_lookup_blob
);
4399 * drm_property_replace_global_blob - atomically replace existing blob property
4401 * @replace: location of blob property pointer to be replaced
4402 * @length: length of data for new blob, or 0 for no data
4403 * @data: content for new blob, or NULL for no data
4404 * @obj_holds_id: optional object for property holding blob ID
4405 * @prop_holds_id: optional property holding blob ID
4406 * @return 0 on success or error on failure
4408 * This function will atomically replace a global property in the blob list,
4409 * optionally updating a property which holds the ID of that property. It is
4410 * guaranteed to be atomic: no caller will be allowed to see intermediate
4411 * results, and either the entire operation will succeed and clean up the
4412 * previous property, or it will fail and the state will be unchanged.
4414 * If length is 0 or data is NULL, no new blob will be created, and the holding
4415 * property, if specified, will be set to 0.
4417 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4418 * by holding the relevant modesetting object lock for its parent.
4420 * For example, a drm_connector has a 'PATH' property, which contains the ID
4421 * of a blob property with the value of the MST path information. Calling this
4422 * function with replace pointing to the connector's path_blob_ptr, length and
4423 * data set for the new path information, obj_holds_id set to the connector's
4424 * base object, and prop_holds_id set to the path property name, will perform
4425 * a completely atomic update. The access to path_blob_ptr is protected by the
4426 * caller holding a lock on the connector.
4428 static int drm_property_replace_global_blob(struct drm_device
*dev
,
4429 struct drm_property_blob
**replace
,
4432 struct drm_mode_object
*obj_holds_id
,
4433 struct drm_property
*prop_holds_id
)
4435 struct drm_property_blob
*new_blob
= NULL
;
4436 struct drm_property_blob
*old_blob
= NULL
;
4439 WARN_ON(replace
== NULL
);
4441 old_blob
= *replace
;
4443 if (length
&& data
) {
4444 new_blob
= drm_property_create_blob(dev
, length
, data
);
4445 if (IS_ERR(new_blob
))
4446 return PTR_ERR(new_blob
);
4449 /* This does not need to be synchronised with blob_lock, as the
4450 * get_properties ioctl locks all modesetting objects, and
4451 * obj_holds_id must be locked before calling here, so we cannot
4452 * have its value out of sync with the list membership modified
4453 * below under blob_lock. */
4455 ret
= drm_object_property_set_value(obj_holds_id
,
4458 new_blob
->base
.id
: 0);
4463 drm_property_unreference_blob(old_blob
);
4464 *replace
= new_blob
;
4469 drm_property_unreference_blob(new_blob
);
4474 * drm_mode_getblob_ioctl - get the contents of a blob property value
4477 * @file_priv: DRM file info
4479 * This function retrieves the contents of a blob property. The value stored in
4480 * an object's blob property is just a normal modeset object id.
4482 * Called by the user via ioctl.
4485 * Zero on success, negative errno on failure.
4487 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
4488 void *data
, struct drm_file
*file_priv
)
4490 struct drm_mode_get_blob
*out_resp
= data
;
4491 struct drm_property_blob
*blob
;
4493 void __user
*blob_ptr
;
4495 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4498 drm_modeset_lock_all(dev
);
4499 mutex_lock(&dev
->mode_config
.blob_lock
);
4500 blob
= __drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4506 if (out_resp
->length
== blob
->length
) {
4507 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4508 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)) {
4513 out_resp
->length
= blob
->length
;
4516 mutex_unlock(&dev
->mode_config
.blob_lock
);
4517 drm_modeset_unlock_all(dev
);
4522 * drm_mode_createblob_ioctl - create a new blob property
4525 * @file_priv: DRM file info
4527 * This function creates a new blob property with user-defined values. In order
4528 * to give us sensible validation and checking when creating, rather than at
4529 * every potential use, we also require a type to be provided upfront.
4531 * Called by the user via ioctl.
4534 * Zero on success, negative errno on failure.
4536 int drm_mode_createblob_ioctl(struct drm_device
*dev
,
4537 void *data
, struct drm_file
*file_priv
)
4539 struct drm_mode_create_blob
*out_resp
= data
;
4540 struct drm_property_blob
*blob
;
4541 void __user
*blob_ptr
;
4544 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4547 blob
= drm_property_create_blob(dev
, out_resp
->length
, NULL
);
4549 return PTR_ERR(blob
);
4551 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4552 if (copy_from_user(blob
->data
, blob_ptr
, out_resp
->length
)) {
4557 /* Dropping the lock between create_blob and our access here is safe
4558 * as only the same file_priv can remove the blob; at this point, it is
4559 * not associated with any file_priv. */
4560 mutex_lock(&dev
->mode_config
.blob_lock
);
4561 out_resp
->blob_id
= blob
->base
.id
;
4562 list_add_tail(&blob
->head_file
, &file_priv
->blobs
);
4563 mutex_unlock(&dev
->mode_config
.blob_lock
);
4568 drm_property_unreference_blob(blob
);
4573 * drm_mode_destroyblob_ioctl - destroy a user blob property
4576 * @file_priv: DRM file info
4578 * Destroy an existing user-defined blob property.
4580 * Called by the user via ioctl.
4583 * Zero on success, negative errno on failure.
4585 int drm_mode_destroyblob_ioctl(struct drm_device
*dev
,
4586 void *data
, struct drm_file
*file_priv
)
4588 struct drm_mode_destroy_blob
*out_resp
= data
;
4589 struct drm_property_blob
*blob
= NULL
, *bt
;
4593 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4596 mutex_lock(&dev
->mode_config
.blob_lock
);
4597 blob
= __drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4603 /* Ensure the property was actually created by this user. */
4604 list_for_each_entry(bt
, &file_priv
->blobs
, head_file
) {
4616 /* We must drop head_file here, because we may not be the last
4617 * reference on the blob. */
4618 list_del_init(&blob
->head_file
);
4619 drm_property_unreference_blob_locked(blob
);
4620 mutex_unlock(&dev
->mode_config
.blob_lock
);
4625 mutex_unlock(&dev
->mode_config
.blob_lock
);
4630 * drm_mode_connector_set_path_property - set tile property on connector
4631 * @connector: connector to set property on.
4632 * @path: path to use for property; must not be NULL.
4634 * This creates a property to expose to userspace to specify a
4635 * connector path. This is mainly used for DisplayPort MST where
4636 * connectors have a topology and we want to allow userspace to give
4637 * them more meaningful names.
4640 * Zero on success, negative errno on failure.
4642 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4645 struct drm_device
*dev
= connector
->dev
;
4648 ret
= drm_property_replace_global_blob(dev
,
4649 &connector
->path_blob_ptr
,
4653 dev
->mode_config
.path_property
);
4656 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4659 * drm_mode_connector_set_tile_property - set tile property on connector
4660 * @connector: connector to set property on.
4662 * This looks up the tile information for a connector, and creates a
4663 * property for userspace to parse if it exists. The property is of
4664 * the form of 8 integers using ':' as a separator.
4667 * Zero on success, errno on failure.
4669 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
)
4671 struct drm_device
*dev
= connector
->dev
;
4675 if (!connector
->has_tile
) {
4676 ret
= drm_property_replace_global_blob(dev
,
4677 &connector
->tile_blob_ptr
,
4681 dev
->mode_config
.tile_property
);
4685 snprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4686 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
4687 connector
->num_h_tile
, connector
->num_v_tile
,
4688 connector
->tile_h_loc
, connector
->tile_v_loc
,
4689 connector
->tile_h_size
, connector
->tile_v_size
);
4691 ret
= drm_property_replace_global_blob(dev
,
4692 &connector
->tile_blob_ptr
,
4696 dev
->mode_config
.tile_property
);
4699 EXPORT_SYMBOL(drm_mode_connector_set_tile_property
);
4702 * drm_mode_connector_update_edid_property - update the edid property of a connector
4703 * @connector: drm connector
4704 * @edid: new value of the edid property
4706 * This function creates a new blob modeset object and assigns its id to the
4707 * connector's edid property.
4710 * Zero on success, negative errno on failure.
4712 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4713 const struct edid
*edid
)
4715 struct drm_device
*dev
= connector
->dev
;
4719 /* ignore requests to set edid when overridden */
4720 if (connector
->override_edid
)
4724 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4726 ret
= drm_property_replace_global_blob(dev
,
4727 &connector
->edid_blob_ptr
,
4731 dev
->mode_config
.edid_property
);
4734 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4736 /* Some properties could refer to dynamic refcnt'd objects, or things that
4737 * need special locking to handle lifetime issues (ie. to ensure the prop
4738 * value doesn't become invalid part way through the property update due to
4739 * race). The value returned by reference via 'obj' should be passed back
4740 * to drm_property_change_valid_put() after the property is set (and the
4741 * object to which the property is attached has a chance to take it's own
4744 bool drm_property_change_valid_get(struct drm_property
*property
,
4745 uint64_t value
, struct drm_mode_object
**ref
)
4749 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4754 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4755 if (value
< property
->values
[0] || value
> property
->values
[1])
4758 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4759 int64_t svalue
= U642I64(value
);
4761 if (svalue
< U642I64(property
->values
[0]) ||
4762 svalue
> U642I64(property
->values
[1]))
4765 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4766 uint64_t valid_mask
= 0;
4768 for (i
= 0; i
< property
->num_values
; i
++)
4769 valid_mask
|= (1ULL << property
->values
[i
]);
4770 return !(value
& ~valid_mask
);
4771 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4772 struct drm_property_blob
*blob
;
4777 blob
= drm_property_lookup_blob(property
->dev
, value
);
4784 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4785 /* a zero value for an object property translates to null: */
4789 /* handle refcnt'd objects specially: */
4790 if (property
->values
[0] == DRM_MODE_OBJECT_FB
) {
4791 struct drm_framebuffer
*fb
;
4792 fb
= drm_framebuffer_lookup(property
->dev
, value
);
4800 return _object_find(property
->dev
, value
, property
->values
[0]) != NULL
;
4804 for (i
= 0; i
< property
->num_values
; i
++)
4805 if (property
->values
[i
] == value
)
4810 void drm_property_change_valid_put(struct drm_property
*property
,
4811 struct drm_mode_object
*ref
)
4816 if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4817 if (property
->values
[0] == DRM_MODE_OBJECT_FB
)
4818 drm_framebuffer_unreference(obj_to_fb(ref
));
4819 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4820 drm_property_unreference_blob(obj_to_blob(ref
));
4824 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4827 * @file_priv: DRM file info
4829 * This function sets the current value for a connectors's property. It also
4830 * calls into a driver's ->set_property callback to update the hardware state
4832 * Called by the user via ioctl.
4835 * Zero on success, negative errno on failure.
4837 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4838 void *data
, struct drm_file
*file_priv
)
4840 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4841 struct drm_mode_obj_set_property obj_set_prop
= {
4842 .value
= conn_set_prop
->value
,
4843 .prop_id
= conn_set_prop
->prop_id
,
4844 .obj_id
= conn_set_prop
->connector_id
,
4845 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4848 /* It does all the locking and checking we need */
4849 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4852 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4853 struct drm_property
*property
,
4857 struct drm_connector
*connector
= obj_to_connector(obj
);
4859 /* Do DPMS ourselves */
4860 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4861 ret
= (*connector
->funcs
->dpms
)(connector
, (int)value
);
4862 } else if (connector
->funcs
->set_property
)
4863 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4865 /* store the property value if successful */
4867 drm_object_property_set_value(&connector
->base
, property
, value
);
4871 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4872 struct drm_property
*property
,
4876 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4878 if (crtc
->funcs
->set_property
)
4879 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4881 drm_object_property_set_value(obj
, property
, value
);
4887 * drm_mode_plane_set_obj_prop - set the value of a property
4888 * @plane: drm plane object to set property value for
4889 * @property: property to set
4890 * @value: value the property should be set to
4892 * This functions sets a given property on a given plane object. This function
4893 * calls the driver's ->set_property callback and changes the software state of
4894 * the property if the callback succeeds.
4897 * Zero on success, error code on failure.
4899 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4900 struct drm_property
*property
,
4904 struct drm_mode_object
*obj
= &plane
->base
;
4906 if (plane
->funcs
->set_property
)
4907 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4909 drm_object_property_set_value(obj
, property
, value
);
4913 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4916 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4919 * @file_priv: DRM file info
4921 * This function retrieves the current value for an object's property. Compared
4922 * to the connector specific ioctl this one is extended to also work on crtc and
4925 * Called by the user via ioctl.
4928 * Zero on success, negative errno on failure.
4930 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4931 struct drm_file
*file_priv
)
4933 struct drm_mode_obj_get_properties
*arg
= data
;
4934 struct drm_mode_object
*obj
;
4937 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4940 drm_modeset_lock_all(dev
);
4942 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4947 if (!obj
->properties
) {
4952 ret
= get_properties(obj
, file_priv
->atomic
,
4953 (uint32_t __user
*)(unsigned long)(arg
->props_ptr
),
4954 (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
),
4958 drm_modeset_unlock_all(dev
);
4963 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4966 * @file_priv: DRM file info
4968 * This function sets the current value for an object's property. It also calls
4969 * into a driver's ->set_property callback to update the hardware state.
4970 * Compared to the connector specific ioctl this one is extended to also work on
4971 * crtc and plane objects.
4973 * Called by the user via ioctl.
4976 * Zero on success, negative errno on failure.
4978 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4979 struct drm_file
*file_priv
)
4981 struct drm_mode_obj_set_property
*arg
= data
;
4982 struct drm_mode_object
*arg_obj
;
4983 struct drm_mode_object
*prop_obj
;
4984 struct drm_property
*property
;
4985 int i
, ret
= -EINVAL
;
4986 struct drm_mode_object
*ref
;
4988 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4991 drm_modeset_lock_all(dev
);
4993 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4998 if (!arg_obj
->properties
)
5001 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
5002 if (arg_obj
->properties
->properties
[i
]->base
.id
== arg
->prop_id
)
5005 if (i
== arg_obj
->properties
->count
)
5008 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
5009 DRM_MODE_OBJECT_PROPERTY
);
5014 property
= obj_to_property(prop_obj
);
5016 if (!drm_property_change_valid_get(property
, arg
->value
, &ref
))
5019 switch (arg_obj
->type
) {
5020 case DRM_MODE_OBJECT_CONNECTOR
:
5021 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
5024 case DRM_MODE_OBJECT_CRTC
:
5025 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
5027 case DRM_MODE_OBJECT_PLANE
:
5028 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
5029 property
, arg
->value
);
5033 drm_property_change_valid_put(property
, ref
);
5036 drm_modeset_unlock_all(dev
);
5041 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5042 * @connector: connector to attach
5043 * @encoder: encoder to attach @connector to
5045 * This function links up a connector to an encoder. Note that the routing
5046 * restrictions between encoders and crtcs are exposed to userspace through the
5047 * possible_clones and possible_crtcs bitmasks.
5050 * Zero on success, negative errno on failure.
5052 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
5053 struct drm_encoder
*encoder
)
5058 * In the past, drivers have attempted to model the static association
5059 * of connector to encoder in simple connector/encoder devices using a
5060 * direct assignment of connector->encoder = encoder. This connection
5061 * is a logical one and the responsibility of the core, so drivers are
5062 * expected not to mess with this.
5064 * Note that the error return should've been enough here, but a large
5065 * majority of drivers ignores the return value, so add in a big WARN
5066 * to get people's attention.
5068 if (WARN_ON(connector
->encoder
))
5071 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
5072 if (connector
->encoder_ids
[i
] == 0) {
5073 connector
->encoder_ids
[i
] = encoder
->base
.id
;
5079 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
5082 * drm_mode_crtc_set_gamma_size - set the gamma table size
5083 * @crtc: CRTC to set the gamma table size for
5084 * @gamma_size: size of the gamma table
5086 * Drivers which support gamma tables should set this to the supported gamma
5087 * table size when initializing the CRTC. Currently the drm core only supports a
5088 * fixed gamma table size.
5091 * Zero on success, negative errno on failure.
5093 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
5096 crtc
->gamma_size
= gamma_size
;
5098 crtc
->gamma_store
= kcalloc(gamma_size
, sizeof(uint16_t) * 3,
5100 if (!crtc
->gamma_store
) {
5101 crtc
->gamma_size
= 0;
5107 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
5110 * drm_mode_gamma_set_ioctl - set the gamma table
5113 * @file_priv: DRM file info
5115 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5116 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5118 * Called by the user via ioctl.
5121 * Zero on success, negative errno on failure.
5123 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
5124 void *data
, struct drm_file
*file_priv
)
5126 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5127 struct drm_crtc
*crtc
;
5128 void *r_base
, *g_base
, *b_base
;
5132 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5135 drm_modeset_lock_all(dev
);
5136 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5142 if (crtc
->funcs
->gamma_set
== NULL
) {
5147 /* memcpy into gamma store */
5148 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5153 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5154 r_base
= crtc
->gamma_store
;
5155 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
5160 g_base
= r_base
+ size
;
5161 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
5166 b_base
= g_base
+ size
;
5167 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
5172 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
5175 drm_modeset_unlock_all(dev
);
5181 * drm_mode_gamma_get_ioctl - get the gamma table
5184 * @file_priv: DRM file info
5186 * Copy the current gamma table into the storage provided. This also provides
5187 * the gamma table size the driver expects, which can be used to size the
5188 * allocated storage.
5190 * Called by the user via ioctl.
5193 * Zero on success, negative errno on failure.
5195 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
5196 void *data
, struct drm_file
*file_priv
)
5198 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5199 struct drm_crtc
*crtc
;
5200 void *r_base
, *g_base
, *b_base
;
5204 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5207 drm_modeset_lock_all(dev
);
5208 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5214 /* memcpy into gamma store */
5215 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5220 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5221 r_base
= crtc
->gamma_store
;
5222 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
5227 g_base
= r_base
+ size
;
5228 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
5233 b_base
= g_base
+ size
;
5234 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
5239 drm_modeset_unlock_all(dev
);
5244 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5247 * @file_priv: DRM file info
5249 * This schedules an asynchronous update on a given CRTC, called page flip.
5250 * Optionally a drm event is generated to signal the completion of the event.
5251 * Generic drivers cannot assume that a pageflip with changed framebuffer
5252 * properties (including driver specific metadata like tiling layout) will work,
5253 * but some drivers support e.g. pixel format changes through the pageflip
5256 * Called by the user via ioctl.
5259 * Zero on success, negative errno on failure.
5261 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
5262 void *data
, struct drm_file
*file_priv
)
5264 struct drm_mode_crtc_page_flip
*page_flip
= data
;
5265 struct drm_crtc
*crtc
;
5266 struct drm_framebuffer
*fb
= NULL
;
5267 struct drm_pending_vblank_event
*e
= NULL
;
5268 unsigned long flags
;
5271 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
5272 page_flip
->reserved
!= 0)
5275 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
5278 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
5282 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
5283 if (crtc
->primary
->fb
== NULL
) {
5284 /* The framebuffer is currently unbound, presumably
5285 * due to a hotplug event, that userspace has not
5292 if (crtc
->funcs
->page_flip
== NULL
)
5295 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
5302 const struct drm_plane_state
*state
= crtc
->primary
->state
;
5304 ret
= check_src_coords(state
->src_x
, state
->src_y
,
5305 state
->src_w
, state
->src_h
, fb
);
5307 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
5312 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
5313 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5318 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5320 spin_lock_irqsave(&dev
->event_lock
, flags
);
5321 if (file_priv
->event_space
< sizeof(e
->event
)) {
5322 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5325 file_priv
->event_space
-= sizeof(e
->event
);
5326 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5328 e
= kzalloc(sizeof(*e
), GFP_KERNEL
);
5330 spin_lock_irqsave(&dev
->event_lock
, flags
);
5331 file_priv
->event_space
+= sizeof(e
->event
);
5332 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5336 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
5337 e
->event
.base
.length
= sizeof(e
->event
);
5338 e
->event
.user_data
= page_flip
->user_data
;
5339 e
->base
.event
= &e
->event
.base
;
5340 e
->base
.file_priv
= file_priv
;
5342 (void (*) (struct drm_pending_event
*)) kfree
;
5345 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
5346 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
5348 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5349 spin_lock_irqsave(&dev
->event_lock
, flags
);
5350 file_priv
->event_space
+= sizeof(e
->event
);
5351 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5354 /* Keep the old fb, don't unref it. */
5355 crtc
->primary
->old_fb
= NULL
;
5357 crtc
->primary
->fb
= fb
;
5358 /* Unref only the old framebuffer. */
5364 drm_framebuffer_unreference(fb
);
5365 if (crtc
->primary
->old_fb
)
5366 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
5367 crtc
->primary
->old_fb
= NULL
;
5368 drm_modeset_unlock_crtc(crtc
);
5374 * drm_mode_config_reset - call ->reset callbacks
5377 * This functions calls all the crtc's, encoder's and connector's ->reset
5378 * callback. Drivers can use this in e.g. their driver load or resume code to
5379 * reset hardware and software state.
5381 void drm_mode_config_reset(struct drm_device
*dev
)
5383 struct drm_crtc
*crtc
;
5384 struct drm_plane
*plane
;
5385 struct drm_encoder
*encoder
;
5386 struct drm_connector
*connector
;
5388 drm_for_each_plane(plane
, dev
)
5389 if (plane
->funcs
->reset
)
5390 plane
->funcs
->reset(plane
);
5392 drm_for_each_crtc(crtc
, dev
)
5393 if (crtc
->funcs
->reset
)
5394 crtc
->funcs
->reset(crtc
);
5396 drm_for_each_encoder(encoder
, dev
)
5397 if (encoder
->funcs
->reset
)
5398 encoder
->funcs
->reset(encoder
);
5400 mutex_lock(&dev
->mode_config
.mutex
);
5401 drm_for_each_connector(connector
, dev
)
5402 if (connector
->funcs
->reset
)
5403 connector
->funcs
->reset(connector
);
5404 mutex_unlock(&dev
->mode_config
.mutex
);
5406 EXPORT_SYMBOL(drm_mode_config_reset
);
5409 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5412 * @file_priv: DRM file info
5414 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5415 * TTM or something else entirely) and returns the resulting buffer handle. This
5416 * handle can then be wrapped up into a framebuffer modeset object.
5418 * Note that userspace is not allowed to use such objects for render
5419 * acceleration - drivers must create their own private ioctls for such a use
5422 * Called by the user via ioctl.
5425 * Zero on success, negative errno on failure.
5427 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
5428 void *data
, struct drm_file
*file_priv
)
5430 struct drm_mode_create_dumb
*args
= data
;
5431 u32 cpp
, stride
, size
;
5433 if (!dev
->driver
->dumb_create
)
5435 if (!args
->width
|| !args
->height
|| !args
->bpp
)
5438 /* overflow checks for 32bit size calculations */
5439 /* NOTE: DIV_ROUND_UP() can overflow */
5440 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
5441 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
5443 stride
= cpp
* args
->width
;
5444 if (args
->height
> 0xffffffffU
/ stride
)
5447 /* test for wrap-around */
5448 size
= args
->height
* stride
;
5449 if (PAGE_ALIGN(size
) == 0)
5453 * handle, pitch and size are output parameters. Zero them out to
5454 * prevent drivers from accidentally using uninitialized data. Since
5455 * not all existing userspace is clearing these fields properly we
5456 * cannot reject IOCTL with garbage in them.
5462 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
5466 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5469 * @file_priv: DRM file info
5471 * Allocate an offset in the drm device node's address space to be able to
5472 * memory map a dumb buffer.
5474 * Called by the user via ioctl.
5477 * Zero on success, negative errno on failure.
5479 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
5480 void *data
, struct drm_file
*file_priv
)
5482 struct drm_mode_map_dumb
*args
= data
;
5484 /* call driver ioctl to get mmap offset */
5485 if (!dev
->driver
->dumb_map_offset
)
5488 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
5492 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5495 * @file_priv: DRM file info
5497 * This destroys the userspace handle for the given dumb backing storage buffer.
5498 * Since buffer objects must be reference counted in the kernel a buffer object
5499 * won't be immediately freed if a framebuffer modeset object still uses it.
5501 * Called by the user via ioctl.
5504 * Zero on success, negative errno on failure.
5506 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
5507 void *data
, struct drm_file
*file_priv
)
5509 struct drm_mode_destroy_dumb
*args
= data
;
5511 if (!dev
->driver
->dumb_destroy
)
5514 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
5518 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5519 * @format: pixel format (DRM_FORMAT_*)
5520 * @depth: storage for the depth value
5521 * @bpp: storage for the bpp value
5523 * This only supports RGB formats here for compat with code that doesn't use
5524 * pixel formats directly yet.
5526 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
5531 case DRM_FORMAT_RGB332
:
5532 case DRM_FORMAT_BGR233
:
5536 case DRM_FORMAT_XRGB1555
:
5537 case DRM_FORMAT_XBGR1555
:
5538 case DRM_FORMAT_RGBX5551
:
5539 case DRM_FORMAT_BGRX5551
:
5540 case DRM_FORMAT_ARGB1555
:
5541 case DRM_FORMAT_ABGR1555
:
5542 case DRM_FORMAT_RGBA5551
:
5543 case DRM_FORMAT_BGRA5551
:
5547 case DRM_FORMAT_RGB565
:
5548 case DRM_FORMAT_BGR565
:
5552 case DRM_FORMAT_RGB888
:
5553 case DRM_FORMAT_BGR888
:
5557 case DRM_FORMAT_XRGB8888
:
5558 case DRM_FORMAT_XBGR8888
:
5559 case DRM_FORMAT_RGBX8888
:
5560 case DRM_FORMAT_BGRX8888
:
5564 case DRM_FORMAT_XRGB2101010
:
5565 case DRM_FORMAT_XBGR2101010
:
5566 case DRM_FORMAT_RGBX1010102
:
5567 case DRM_FORMAT_BGRX1010102
:
5568 case DRM_FORMAT_ARGB2101010
:
5569 case DRM_FORMAT_ABGR2101010
:
5570 case DRM_FORMAT_RGBA1010102
:
5571 case DRM_FORMAT_BGRA1010102
:
5575 case DRM_FORMAT_ARGB8888
:
5576 case DRM_FORMAT_ABGR8888
:
5577 case DRM_FORMAT_RGBA8888
:
5578 case DRM_FORMAT_BGRA8888
:
5583 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5584 drm_get_format_name(format
));
5590 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
5593 * drm_format_num_planes - get the number of planes for format
5594 * @format: pixel format (DRM_FORMAT_*)
5597 * The number of planes used by the specified pixel format.
5599 int drm_format_num_planes(uint32_t format
)
5602 case DRM_FORMAT_YUV410
:
5603 case DRM_FORMAT_YVU410
:
5604 case DRM_FORMAT_YUV411
:
5605 case DRM_FORMAT_YVU411
:
5606 case DRM_FORMAT_YUV420
:
5607 case DRM_FORMAT_YVU420
:
5608 case DRM_FORMAT_YUV422
:
5609 case DRM_FORMAT_YVU422
:
5610 case DRM_FORMAT_YUV444
:
5611 case DRM_FORMAT_YVU444
:
5613 case DRM_FORMAT_NV12
:
5614 case DRM_FORMAT_NV21
:
5615 case DRM_FORMAT_NV16
:
5616 case DRM_FORMAT_NV61
:
5617 case DRM_FORMAT_NV24
:
5618 case DRM_FORMAT_NV42
:
5624 EXPORT_SYMBOL(drm_format_num_planes
);
5627 * drm_format_plane_cpp - determine the bytes per pixel value
5628 * @format: pixel format (DRM_FORMAT_*)
5629 * @plane: plane index
5632 * The bytes per pixel value for the specified plane.
5634 int drm_format_plane_cpp(uint32_t format
, int plane
)
5639 if (plane
>= drm_format_num_planes(format
))
5643 case DRM_FORMAT_YUYV
:
5644 case DRM_FORMAT_YVYU
:
5645 case DRM_FORMAT_UYVY
:
5646 case DRM_FORMAT_VYUY
:
5648 case DRM_FORMAT_NV12
:
5649 case DRM_FORMAT_NV21
:
5650 case DRM_FORMAT_NV16
:
5651 case DRM_FORMAT_NV61
:
5652 case DRM_FORMAT_NV24
:
5653 case DRM_FORMAT_NV42
:
5654 return plane
? 2 : 1;
5655 case DRM_FORMAT_YUV410
:
5656 case DRM_FORMAT_YVU410
:
5657 case DRM_FORMAT_YUV411
:
5658 case DRM_FORMAT_YVU411
:
5659 case DRM_FORMAT_YUV420
:
5660 case DRM_FORMAT_YVU420
:
5661 case DRM_FORMAT_YUV422
:
5662 case DRM_FORMAT_YVU422
:
5663 case DRM_FORMAT_YUV444
:
5664 case DRM_FORMAT_YVU444
:
5667 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
5671 EXPORT_SYMBOL(drm_format_plane_cpp
);
5674 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5675 * @format: pixel format (DRM_FORMAT_*)
5678 * The horizontal chroma subsampling factor for the
5679 * specified pixel format.
5681 int drm_format_horz_chroma_subsampling(uint32_t format
)
5684 case DRM_FORMAT_YUV411
:
5685 case DRM_FORMAT_YVU411
:
5686 case DRM_FORMAT_YUV410
:
5687 case DRM_FORMAT_YVU410
:
5689 case DRM_FORMAT_YUYV
:
5690 case DRM_FORMAT_YVYU
:
5691 case DRM_FORMAT_UYVY
:
5692 case DRM_FORMAT_VYUY
:
5693 case DRM_FORMAT_NV12
:
5694 case DRM_FORMAT_NV21
:
5695 case DRM_FORMAT_NV16
:
5696 case DRM_FORMAT_NV61
:
5697 case DRM_FORMAT_YUV422
:
5698 case DRM_FORMAT_YVU422
:
5699 case DRM_FORMAT_YUV420
:
5700 case DRM_FORMAT_YVU420
:
5706 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5709 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5710 * @format: pixel format (DRM_FORMAT_*)
5713 * The vertical chroma subsampling factor for the
5714 * specified pixel format.
5716 int drm_format_vert_chroma_subsampling(uint32_t format
)
5719 case DRM_FORMAT_YUV410
:
5720 case DRM_FORMAT_YVU410
:
5722 case DRM_FORMAT_YUV420
:
5723 case DRM_FORMAT_YVU420
:
5724 case DRM_FORMAT_NV12
:
5725 case DRM_FORMAT_NV21
:
5731 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5734 * drm_rotation_simplify() - Try to simplify the rotation
5735 * @rotation: Rotation to be simplified
5736 * @supported_rotations: Supported rotations
5738 * Attempt to simplify the rotation to a form that is supported.
5739 * Eg. if the hardware supports everything except DRM_REFLECT_X
5740 * one could call this function like this:
5742 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5743 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5744 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5746 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5747 * transforms the hardware supports, this function may not
5748 * be able to produce a supported transform, so the caller should
5749 * check the result afterwards.
5751 unsigned int drm_rotation_simplify(unsigned int rotation
,
5752 unsigned int supported_rotations
)
5754 if (rotation
& ~supported_rotations
) {
5755 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5756 rotation
= (rotation
& DRM_REFLECT_MASK
) |
5757 BIT((ffs(rotation
& DRM_ROTATE_MASK
) + 1) % 4);
5762 EXPORT_SYMBOL(drm_rotation_simplify
);
5765 * drm_mode_config_init - initialize DRM mode_configuration structure
5768 * Initialize @dev's mode_config structure, used for tracking the graphics
5769 * configuration of @dev.
5771 * Since this initializes the modeset locks, no locking is possible. Which is no
5772 * problem, since this should happen single threaded at init time. It is the
5773 * driver's problem to ensure this guarantee.
5776 void drm_mode_config_init(struct drm_device
*dev
)
5778 mutex_init(&dev
->mode_config
.mutex
);
5779 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5780 mutex_init(&dev
->mode_config
.idr_mutex
);
5781 mutex_init(&dev
->mode_config
.fb_lock
);
5782 mutex_init(&dev
->mode_config
.blob_lock
);
5783 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5784 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5785 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5786 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5787 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5788 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5789 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5790 idr_init(&dev
->mode_config
.crtc_idr
);
5791 idr_init(&dev
->mode_config
.tile_idr
);
5793 drm_modeset_lock_all(dev
);
5794 drm_mode_create_standard_properties(dev
);
5795 drm_modeset_unlock_all(dev
);
5797 /* Just to be sure */
5798 dev
->mode_config
.num_fb
= 0;
5799 dev
->mode_config
.num_connector
= 0;
5800 dev
->mode_config
.num_crtc
= 0;
5801 dev
->mode_config
.num_encoder
= 0;
5802 dev
->mode_config
.num_overlay_plane
= 0;
5803 dev
->mode_config
.num_total_plane
= 0;
5805 EXPORT_SYMBOL(drm_mode_config_init
);
5808 * drm_mode_config_cleanup - free up DRM mode_config info
5811 * Free up all the connectors and CRTCs associated with this DRM device, then
5812 * free up the framebuffers and associated buffer objects.
5814 * Note that since this /should/ happen single-threaded at driver/device
5815 * teardown time, no locking is required. It's the driver's job to ensure that
5816 * this guarantee actually holds true.
5818 * FIXME: cleanup any dangling user buffer objects too
5820 void drm_mode_config_cleanup(struct drm_device
*dev
)
5822 struct drm_connector
*connector
, *ot
;
5823 struct drm_crtc
*crtc
, *ct
;
5824 struct drm_encoder
*encoder
, *enct
;
5825 struct drm_framebuffer
*fb
, *fbt
;
5826 struct drm_property
*property
, *pt
;
5827 struct drm_property_blob
*blob
, *bt
;
5828 struct drm_plane
*plane
, *plt
;
5830 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5832 encoder
->funcs
->destroy(encoder
);
5835 list_for_each_entry_safe(connector
, ot
,
5836 &dev
->mode_config
.connector_list
, head
) {
5837 connector
->funcs
->destroy(connector
);
5840 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5842 drm_property_destroy(dev
, property
);
5845 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5847 drm_property_unreference_blob(blob
);
5851 * Single-threaded teardown context, so it's not required to grab the
5852 * fb_lock to protect against concurrent fb_list access. Contrary, it
5853 * would actually deadlock with the drm_framebuffer_cleanup function.
5855 * Also, if there are any framebuffers left, that's a driver leak now,
5856 * so politely WARN about this.
5858 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5859 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5860 drm_framebuffer_free(&fb
->refcount
);
5863 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5865 plane
->funcs
->destroy(plane
);
5868 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5869 crtc
->funcs
->destroy(crtc
);
5872 idr_destroy(&dev
->mode_config
.tile_idr
);
5873 idr_destroy(&dev
->mode_config
.crtc_idr
);
5874 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5876 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5878 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5879 unsigned int supported_rotations
)
5881 static const struct drm_prop_enum_list props
[] = {
5882 { DRM_ROTATE_0
, "rotate-0" },
5883 { DRM_ROTATE_90
, "rotate-90" },
5884 { DRM_ROTATE_180
, "rotate-180" },
5885 { DRM_ROTATE_270
, "rotate-270" },
5886 { DRM_REFLECT_X
, "reflect-x" },
5887 { DRM_REFLECT_Y
, "reflect-y" },
5890 return drm_property_create_bitmask(dev
, 0, "rotation",
5891 props
, ARRAY_SIZE(props
),
5892 supported_rotations
);
5894 EXPORT_SYMBOL(drm_mode_create_rotation_property
);
5899 * Tile groups are used to represent tiled monitors with a unique
5900 * integer identifier. Tiled monitors using DisplayID v1.3 have
5901 * a unique 8-byte handle, we store this in a tile group, so we
5902 * have a common identifier for all tiles in a monitor group.
5904 static void drm_tile_group_free(struct kref
*kref
)
5906 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
5907 struct drm_device
*dev
= tg
->dev
;
5908 mutex_lock(&dev
->mode_config
.idr_mutex
);
5909 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
5910 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5915 * drm_mode_put_tile_group - drop a reference to a tile group.
5917 * @tg: tile group to drop reference to.
5919 * drop reference to tile group and free if 0.
5921 void drm_mode_put_tile_group(struct drm_device
*dev
,
5922 struct drm_tile_group
*tg
)
5924 kref_put(&tg
->refcount
, drm_tile_group_free
);
5928 * drm_mode_get_tile_group - get a reference to an existing tile group
5930 * @topology: 8-bytes unique per monitor.
5932 * Use the unique bytes to get a reference to an existing tile group.
5935 * tile group or NULL if not found.
5937 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
5940 struct drm_tile_group
*tg
;
5942 mutex_lock(&dev
->mode_config
.idr_mutex
);
5943 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
5944 if (!memcmp(tg
->group_data
, topology
, 8)) {
5945 if (!kref_get_unless_zero(&tg
->refcount
))
5947 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5951 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5954 EXPORT_SYMBOL(drm_mode_get_tile_group
);
5957 * drm_mode_create_tile_group - create a tile group from a displayid description
5959 * @topology: 8-bytes unique per monitor.
5961 * Create a tile group for the unique monitor, and get a unique
5962 * identifier for the tile group.
5965 * new tile group or error.
5967 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
5970 struct drm_tile_group
*tg
;
5973 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
5975 return ERR_PTR(-ENOMEM
);
5977 kref_init(&tg
->refcount
);
5978 memcpy(tg
->group_data
, topology
, 8);
5981 mutex_lock(&dev
->mode_config
.idr_mutex
);
5982 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
5990 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5993 EXPORT_SYMBOL(drm_mode_create_tile_group
);