2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_fourcc.h>
40 #include <drm/drm_modeset_lock.h>
41 #include <drm/drm_atomic.h>
43 #include "drm_crtc_internal.h"
44 #include "drm_internal.h"
46 static struct drm_framebuffer
*
47 internal_framebuffer_create(struct drm_device
*dev
,
48 struct drm_mode_fb_cmd2
*r
,
49 struct drm_file
*file_priv
);
51 /* Avoid boilerplate. I'm tired of typing. */
52 #define DRM_ENUM_NAME_FN(fnname, list) \
53 const char *fnname(int val) \
56 for (i = 0; i < ARRAY_SIZE(list); i++) { \
57 if (list[i].type == val) \
58 return list[i].name; \
66 static const struct drm_prop_enum_list drm_dpms_enum_list
[] = {
67 { DRM_MODE_DPMS_ON
, "On" },
68 { DRM_MODE_DPMS_STANDBY
, "Standby" },
69 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
70 { DRM_MODE_DPMS_OFF
, "Off" }
73 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
75 static const struct drm_prop_enum_list drm_plane_type_enum_list
[] = {
76 { DRM_PLANE_TYPE_OVERLAY
, "Overlay" },
77 { DRM_PLANE_TYPE_PRIMARY
, "Primary" },
78 { DRM_PLANE_TYPE_CURSOR
, "Cursor" },
84 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] = {
85 { DRM_MODE_SCALE_NONE
, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
87 { DRM_MODE_SCALE_CENTER
, "Center" },
88 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list
[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE
, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3
, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9
, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list
[] = {
101 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
102 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
103 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
106 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
108 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] = {
109 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
110 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
111 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
114 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
115 drm_dvi_i_subconnector_enum_list
)
117 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] = {
118 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
122 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
125 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
127 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] = {
128 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
129 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
132 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
135 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
136 drm_tv_subconnector_enum_list
)
138 static const struct drm_prop_enum_list drm_dirty_info_enum_list
[] = {
139 { DRM_MODE_DIRTY_OFF
, "Off" },
140 { DRM_MODE_DIRTY_ON
, "On" },
141 { DRM_MODE_DIRTY_ANNOTATE
, "Annotate" },
144 struct drm_conn_prop_enum_list
{
151 * Connector and encoder types.
153 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] = {
154 { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
155 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
156 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
157 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
158 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
159 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
160 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
161 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
162 { DRM_MODE_CONNECTOR_Component
, "Component" },
163 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
164 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
165 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
166 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
167 { DRM_MODE_CONNECTOR_TV
, "TV" },
168 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
169 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
170 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
173 static const struct drm_prop_enum_list drm_encoder_enum_list
[] = {
174 { DRM_MODE_ENCODER_NONE
, "None" },
175 { DRM_MODE_ENCODER_DAC
, "DAC" },
176 { DRM_MODE_ENCODER_TMDS
, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS
, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC
, "TV" },
179 { DRM_MODE_ENCODER_VIRTUAL
, "Virtual" },
180 { DRM_MODE_ENCODER_DSI
, "DSI" },
181 { DRM_MODE_ENCODER_DPMST
, "DP MST" },
184 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] = {
185 { SubPixelUnknown
, "Unknown" },
186 { SubPixelHorizontalRGB
, "Horizontal RGB" },
187 { SubPixelHorizontalBGR
, "Horizontal BGR" },
188 { SubPixelVerticalRGB
, "Vertical RGB" },
189 { SubPixelVerticalBGR
, "Vertical BGR" },
190 { SubPixelNone
, "None" },
193 void drm_connector_ida_init(void)
197 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
198 ida_init(&drm_connector_enum_list
[i
].ida
);
201 void drm_connector_ida_destroy(void)
205 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
206 ida_destroy(&drm_connector_enum_list
[i
].ida
);
210 * drm_get_connector_status_name - return a string for connector status
211 * @status: connector status to compute name of
213 * In contrast to the other drm_get_*_name functions this one here returns a
214 * const pointer and hence is threadsafe.
216 const char *drm_get_connector_status_name(enum drm_connector_status status
)
218 if (status
== connector_status_connected
)
220 else if (status
== connector_status_disconnected
)
221 return "disconnected";
225 EXPORT_SYMBOL(drm_get_connector_status_name
);
228 * drm_get_subpixel_order_name - return a string for a given subpixel enum
229 * @order: enum of subpixel_order
231 * Note you could abuse this and return something out of bounds, but that
232 * would be a caller error. No unscrubbed user data should make it here.
234 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
236 return drm_subpixel_enum_list
[order
].name
;
238 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
240 static char printable_char(int c
)
242 return isascii(c
) && isprint(c
) ? c
: '?';
246 * drm_get_format_name - return a string for drm fourcc format
247 * @format: format to compute name of
249 * Note that the buffer used by this function is globally shared and owned by
250 * the function itself.
252 * FIXME: This isn't really multithreading safe.
254 const char *drm_get_format_name(uint32_t format
)
258 snprintf(buf
, sizeof(buf
),
259 "%c%c%c%c %s-endian (0x%08x)",
260 printable_char(format
& 0xff),
261 printable_char((format
>> 8) & 0xff),
262 printable_char((format
>> 16) & 0xff),
263 printable_char((format
>> 24) & 0x7f),
264 format
& DRM_FORMAT_BIG_ENDIAN
? "big" : "little",
269 EXPORT_SYMBOL(drm_get_format_name
);
272 * Internal function to assign a slot in the object idr and optionally
273 * register the object into the idr.
275 static int drm_mode_object_get_reg(struct drm_device
*dev
,
276 struct drm_mode_object
*obj
,
282 mutex_lock(&dev
->mode_config
.idr_mutex
);
283 ret
= idr_alloc(&dev
->mode_config
.crtc_idr
, register_obj
? obj
: NULL
, 1, 0, GFP_KERNEL
);
286 * Set up the object linking under the protection of the idr
287 * lock so that other users can't see inconsistent state.
290 obj
->type
= obj_type
;
292 mutex_unlock(&dev
->mode_config
.idr_mutex
);
294 return ret
< 0 ? ret
: 0;
298 * drm_mode_object_get - allocate a new modeset identifier
300 * @obj: object pointer, used to generate unique ID
301 * @obj_type: object type
303 * Create a unique identifier based on @ptr in @dev's identifier space. Used
304 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
305 * modeset identifiers are _not_ reference counted. Hence don't use this for
306 * reference counted modeset objects like framebuffers.
309 * 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
);
653 * drm_crtc_init_with_planes - Initialise a new CRTC object with
654 * specified primary and cursor planes.
656 * @crtc: CRTC object to init
657 * @primary: Primary plane for CRTC
658 * @cursor: Cursor plane for CRTC
659 * @funcs: callbacks for the new CRTC
661 * Inits a new object created as base part of a driver crtc object.
664 * Zero on success, error code on failure.
666 int drm_crtc_init_with_planes(struct drm_device
*dev
, struct drm_crtc
*crtc
,
667 struct drm_plane
*primary
,
668 struct drm_plane
*cursor
,
669 const struct drm_crtc_funcs
*funcs
)
671 struct drm_mode_config
*config
= &dev
->mode_config
;
674 WARN_ON(primary
&& primary
->type
!= DRM_PLANE_TYPE_PRIMARY
);
675 WARN_ON(cursor
&& cursor
->type
!= DRM_PLANE_TYPE_CURSOR
);
679 crtc
->invert_dimensions
= false;
681 drm_modeset_lock_init(&crtc
->mutex
);
682 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
686 crtc
->base
.properties
= &crtc
->properties
;
688 list_add_tail(&crtc
->head
, &config
->crtc_list
);
691 crtc
->primary
= primary
;
692 crtc
->cursor
= cursor
;
694 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
696 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
698 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
699 drm_object_attach_property(&crtc
->base
, config
->prop_active
, 0);
700 drm_object_attach_property(&crtc
->base
, config
->prop_mode_id
, 0);
705 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
708 * drm_crtc_cleanup - Clean up the core crtc usage
709 * @crtc: CRTC to cleanup
711 * This function cleans up @crtc and removes it from the DRM mode setting
712 * core. Note that the function does *not* free the crtc structure itself,
713 * this is the responsibility of the caller.
715 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
717 struct drm_device
*dev
= crtc
->dev
;
719 kfree(crtc
->gamma_store
);
720 crtc
->gamma_store
= NULL
;
722 drm_modeset_lock_fini(&crtc
->mutex
);
724 drm_mode_object_put(dev
, &crtc
->base
);
725 list_del(&crtc
->head
);
726 dev
->mode_config
.num_crtc
--;
728 WARN_ON(crtc
->state
&& !crtc
->funcs
->atomic_destroy_state
);
729 if (crtc
->state
&& crtc
->funcs
->atomic_destroy_state
)
730 crtc
->funcs
->atomic_destroy_state(crtc
, crtc
->state
);
732 memset(crtc
, 0, sizeof(*crtc
));
734 EXPORT_SYMBOL(drm_crtc_cleanup
);
737 * drm_crtc_index - find the index of a registered CRTC
738 * @crtc: CRTC to find index for
740 * Given a registered CRTC, return the index of that CRTC within a DRM
741 * device's list of CRTCs.
743 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
745 unsigned int index
= 0;
746 struct drm_crtc
*tmp
;
748 drm_for_each_crtc(tmp
, crtc
->dev
) {
757 EXPORT_SYMBOL(drm_crtc_index
);
760 * drm_mode_remove - remove and free a mode
761 * @connector: connector list to modify
762 * @mode: mode to remove
764 * Remove @mode from @connector's mode list, then free it.
766 static void drm_mode_remove(struct drm_connector
*connector
,
767 struct drm_display_mode
*mode
)
769 list_del(&mode
->head
);
770 drm_mode_destroy(connector
->dev
, mode
);
774 * drm_display_info_set_bus_formats - set the supported bus formats
775 * @info: display info to store bus formats in
776 * @formats: array containing the supported bus formats
777 * @num_formats: the number of entries in the fmts array
779 * Store the supported bus formats in display info structure.
780 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
781 * a full list of available formats.
783 int drm_display_info_set_bus_formats(struct drm_display_info
*info
,
785 unsigned int num_formats
)
789 if (!formats
&& num_formats
)
792 if (formats
&& num_formats
) {
793 fmts
= kmemdup(formats
, sizeof(*formats
) * num_formats
,
799 kfree(info
->bus_formats
);
800 info
->bus_formats
= fmts
;
801 info
->num_bus_formats
= num_formats
;
805 EXPORT_SYMBOL(drm_display_info_set_bus_formats
);
808 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
809 * @connector: connector to quwery
811 * The kernel supports per-connector configration of its consoles through
812 * use of the video= parameter. This function parses that option and
813 * extracts the user's specified mode (or enable/disable status) for a
814 * particular connector. This is typically only used during the early fbdev
817 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
819 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
822 if (fb_get_options(connector
->name
, &option
))
825 if (!drm_mode_parse_command_line_for_connector(option
,
833 switch (mode
->force
) {
837 case DRM_FORCE_ON_DIGITAL
:
846 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
847 connector
->force
= mode
->force
;
850 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
852 mode
->xres
, mode
->yres
,
853 mode
->refresh_specified
? mode
->refresh
: 60,
854 mode
->rb
? " reduced blanking" : "",
855 mode
->margins
? " with margins" : "",
856 mode
->interlace
? " interlaced" : "");
860 * drm_connector_init - Init a preallocated connector
862 * @connector: the connector to init
863 * @funcs: callbacks for this connector
864 * @connector_type: user visible type of the connector
866 * Initialises a preallocated connector. Connectors should be
867 * subclassed as part of driver connector objects.
870 * Zero on success, error code on failure.
872 int drm_connector_init(struct drm_device
*dev
,
873 struct drm_connector
*connector
,
874 const struct drm_connector_funcs
*funcs
,
877 struct drm_mode_config
*config
= &dev
->mode_config
;
879 struct ida
*connector_ida
=
880 &drm_connector_enum_list
[connector_type
].ida
;
882 drm_modeset_lock_all(dev
);
884 ret
= drm_mode_object_get_reg(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
, false);
888 connector
->base
.properties
= &connector
->properties
;
889 connector
->dev
= dev
;
890 connector
->funcs
= funcs
;
891 connector
->connector_type
= connector_type
;
892 connector
->connector_type_id
=
893 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
894 if (connector
->connector_type_id
< 0) {
895 ret
= connector
->connector_type_id
;
899 kasprintf(GFP_KERNEL
, "%s-%d",
900 drm_connector_enum_list
[connector_type
].name
,
901 connector
->connector_type_id
);
902 if (!connector
->name
) {
907 INIT_LIST_HEAD(&connector
->probed_modes
);
908 INIT_LIST_HEAD(&connector
->modes
);
909 connector
->edid_blob_ptr
= NULL
;
910 connector
->status
= connector_status_unknown
;
912 drm_connector_get_cmdline_mode(connector
);
914 /* We should add connectors at the end to avoid upsetting the connector
916 list_add_tail(&connector
->head
, &config
->connector_list
);
917 config
->num_connector
++;
919 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
920 drm_object_attach_property(&connector
->base
,
921 config
->edid_property
,
924 drm_object_attach_property(&connector
->base
,
925 config
->dpms_property
, 0);
927 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
928 drm_object_attach_property(&connector
->base
, config
->prop_crtc_id
, 0);
931 connector
->debugfs_entry
= NULL
;
935 drm_mode_object_put(dev
, &connector
->base
);
938 drm_modeset_unlock_all(dev
);
942 EXPORT_SYMBOL(drm_connector_init
);
945 * drm_connector_cleanup - cleans up an initialised connector
946 * @connector: connector to cleanup
948 * Cleans up the connector but doesn't free the object.
950 void drm_connector_cleanup(struct drm_connector
*connector
)
952 struct drm_device
*dev
= connector
->dev
;
953 struct drm_display_mode
*mode
, *t
;
955 if (connector
->tile_group
) {
956 drm_mode_put_tile_group(dev
, connector
->tile_group
);
957 connector
->tile_group
= NULL
;
960 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
961 drm_mode_remove(connector
, mode
);
963 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
964 drm_mode_remove(connector
, mode
);
966 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
967 connector
->connector_type_id
);
969 kfree(connector
->display_info
.bus_formats
);
970 drm_mode_object_put(dev
, &connector
->base
);
971 kfree(connector
->name
);
972 connector
->name
= NULL
;
973 list_del(&connector
->head
);
974 dev
->mode_config
.num_connector
--;
976 WARN_ON(connector
->state
&& !connector
->funcs
->atomic_destroy_state
);
977 if (connector
->state
&& connector
->funcs
->atomic_destroy_state
)
978 connector
->funcs
->atomic_destroy_state(connector
,
981 memset(connector
, 0, sizeof(*connector
));
983 EXPORT_SYMBOL(drm_connector_cleanup
);
986 * drm_connector_index - find the index of a registered connector
987 * @connector: connector to find index for
989 * Given a registered connector, return the index of that connector within a DRM
990 * device's list of connectors.
992 unsigned int drm_connector_index(struct drm_connector
*connector
)
994 unsigned int index
= 0;
995 struct drm_connector
*tmp
;
996 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
998 WARN_ON(!drm_modeset_is_locked(&config
->connection_mutex
));
1000 drm_for_each_connector(tmp
, connector
->dev
) {
1001 if (tmp
== connector
)
1009 EXPORT_SYMBOL(drm_connector_index
);
1012 * drm_connector_register - register a connector
1013 * @connector: the connector to register
1015 * Register userspace interfaces for a connector
1018 * Zero on success, error code on failure.
1020 int drm_connector_register(struct drm_connector
*connector
)
1024 drm_mode_object_register(connector
->dev
, &connector
->base
);
1026 ret
= drm_sysfs_connector_add(connector
);
1030 ret
= drm_debugfs_connector_add(connector
);
1032 drm_sysfs_connector_remove(connector
);
1038 EXPORT_SYMBOL(drm_connector_register
);
1041 * drm_connector_unregister - unregister a connector
1042 * @connector: the connector to unregister
1044 * Unregister userspace interfaces for a connector
1046 void drm_connector_unregister(struct drm_connector
*connector
)
1048 drm_sysfs_connector_remove(connector
);
1049 drm_debugfs_connector_remove(connector
);
1051 EXPORT_SYMBOL(drm_connector_unregister
);
1055 * drm_connector_unplug_all - unregister connector userspace interfaces
1058 * This function unregisters all connector userspace interfaces in sysfs. Should
1059 * be call when the device is disconnected, e.g. from an usb driver's
1060 * ->disconnect callback.
1062 void drm_connector_unplug_all(struct drm_device
*dev
)
1064 struct drm_connector
*connector
;
1066 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1067 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1068 drm_connector_unregister(connector
);
1071 EXPORT_SYMBOL(drm_connector_unplug_all
);
1074 * drm_encoder_init - Init a preallocated encoder
1076 * @encoder: the encoder to init
1077 * @funcs: callbacks for this encoder
1078 * @encoder_type: user visible type of the encoder
1080 * Initialises a preallocated encoder. Encoder should be
1081 * subclassed as part of driver encoder objects.
1084 * Zero on success, error code on failure.
1086 int drm_encoder_init(struct drm_device
*dev
,
1087 struct drm_encoder
*encoder
,
1088 const struct drm_encoder_funcs
*funcs
,
1093 drm_modeset_lock_all(dev
);
1095 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1100 encoder
->encoder_type
= encoder_type
;
1101 encoder
->funcs
= funcs
;
1102 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1103 drm_encoder_enum_list
[encoder_type
].name
,
1105 if (!encoder
->name
) {
1110 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1111 dev
->mode_config
.num_encoder
++;
1115 drm_mode_object_put(dev
, &encoder
->base
);
1118 drm_modeset_unlock_all(dev
);
1122 EXPORT_SYMBOL(drm_encoder_init
);
1125 * drm_encoder_cleanup - cleans up an initialised encoder
1126 * @encoder: encoder to cleanup
1128 * Cleans up the encoder but doesn't free the object.
1130 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1132 struct drm_device
*dev
= encoder
->dev
;
1134 drm_modeset_lock_all(dev
);
1135 drm_mode_object_put(dev
, &encoder
->base
);
1136 kfree(encoder
->name
);
1137 list_del(&encoder
->head
);
1138 dev
->mode_config
.num_encoder
--;
1139 drm_modeset_unlock_all(dev
);
1141 memset(encoder
, 0, sizeof(*encoder
));
1143 EXPORT_SYMBOL(drm_encoder_cleanup
);
1146 * drm_universal_plane_init - Initialize a new universal plane object
1148 * @plane: plane object to init
1149 * @possible_crtcs: bitmask of possible CRTCs
1150 * @funcs: callbacks for the new plane
1151 * @formats: array of supported formats (%DRM_FORMAT_*)
1152 * @format_count: number of elements in @formats
1153 * @type: type of plane (overlay, primary, cursor)
1155 * Initializes a plane object of type @type.
1158 * Zero on success, error code on failure.
1160 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1161 unsigned long possible_crtcs
,
1162 const struct drm_plane_funcs
*funcs
,
1163 const uint32_t *formats
, unsigned int format_count
,
1164 enum drm_plane_type type
)
1166 struct drm_mode_config
*config
= &dev
->mode_config
;
1169 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1173 drm_modeset_lock_init(&plane
->mutex
);
1175 plane
->base
.properties
= &plane
->properties
;
1177 plane
->funcs
= funcs
;
1178 plane
->format_types
= kmalloc_array(format_count
, sizeof(uint32_t),
1180 if (!plane
->format_types
) {
1181 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1182 drm_mode_object_put(dev
, &plane
->base
);
1186 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1187 plane
->format_count
= format_count
;
1188 plane
->possible_crtcs
= possible_crtcs
;
1191 list_add_tail(&plane
->head
, &config
->plane_list
);
1192 config
->num_total_plane
++;
1193 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1194 config
->num_overlay_plane
++;
1196 drm_object_attach_property(&plane
->base
,
1197 config
->plane_type_property
,
1200 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
1201 drm_object_attach_property(&plane
->base
, config
->prop_fb_id
, 0);
1202 drm_object_attach_property(&plane
->base
, config
->prop_crtc_id
, 0);
1203 drm_object_attach_property(&plane
->base
, config
->prop_crtc_x
, 0);
1204 drm_object_attach_property(&plane
->base
, config
->prop_crtc_y
, 0);
1205 drm_object_attach_property(&plane
->base
, config
->prop_crtc_w
, 0);
1206 drm_object_attach_property(&plane
->base
, config
->prop_crtc_h
, 0);
1207 drm_object_attach_property(&plane
->base
, config
->prop_src_x
, 0);
1208 drm_object_attach_property(&plane
->base
, config
->prop_src_y
, 0);
1209 drm_object_attach_property(&plane
->base
, config
->prop_src_w
, 0);
1210 drm_object_attach_property(&plane
->base
, config
->prop_src_h
, 0);
1215 EXPORT_SYMBOL(drm_universal_plane_init
);
1218 * drm_plane_init - Initialize a legacy plane
1220 * @plane: plane object to init
1221 * @possible_crtcs: bitmask of possible CRTCs
1222 * @funcs: callbacks for the new plane
1223 * @formats: array of supported formats (%DRM_FORMAT_*)
1224 * @format_count: number of elements in @formats
1225 * @is_primary: plane type (primary vs overlay)
1227 * Legacy API to initialize a DRM plane.
1229 * New drivers should call drm_universal_plane_init() instead.
1232 * Zero on success, error code on failure.
1234 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1235 unsigned long possible_crtcs
,
1236 const struct drm_plane_funcs
*funcs
,
1237 const uint32_t *formats
, unsigned int format_count
,
1240 enum drm_plane_type type
;
1242 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1243 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1244 formats
, format_count
, type
);
1246 EXPORT_SYMBOL(drm_plane_init
);
1249 * drm_plane_cleanup - Clean up the core plane usage
1250 * @plane: plane to cleanup
1252 * This function cleans up @plane and removes it from the DRM mode setting
1253 * core. Note that the function does *not* free the plane structure itself,
1254 * this is the responsibility of the caller.
1256 void drm_plane_cleanup(struct drm_plane
*plane
)
1258 struct drm_device
*dev
= plane
->dev
;
1260 drm_modeset_lock_all(dev
);
1261 kfree(plane
->format_types
);
1262 drm_mode_object_put(dev
, &plane
->base
);
1264 BUG_ON(list_empty(&plane
->head
));
1266 list_del(&plane
->head
);
1267 dev
->mode_config
.num_total_plane
--;
1268 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1269 dev
->mode_config
.num_overlay_plane
--;
1270 drm_modeset_unlock_all(dev
);
1272 WARN_ON(plane
->state
&& !plane
->funcs
->atomic_destroy_state
);
1273 if (plane
->state
&& plane
->funcs
->atomic_destroy_state
)
1274 plane
->funcs
->atomic_destroy_state(plane
, plane
->state
);
1276 memset(plane
, 0, sizeof(*plane
));
1278 EXPORT_SYMBOL(drm_plane_cleanup
);
1281 * drm_plane_index - find the index of a registered plane
1282 * @plane: plane to find index for
1284 * Given a registered plane, return the index of that CRTC within a DRM
1285 * device's list of planes.
1287 unsigned int drm_plane_index(struct drm_plane
*plane
)
1289 unsigned int index
= 0;
1290 struct drm_plane
*tmp
;
1292 drm_for_each_plane(tmp
, plane
->dev
) {
1301 EXPORT_SYMBOL(drm_plane_index
);
1304 * drm_plane_from_index - find the registered plane at an index
1306 * @idx: index of registered plane to find for
1308 * Given a plane index, return the registered plane from DRM device's
1309 * list of planes with matching index.
1312 drm_plane_from_index(struct drm_device
*dev
, int idx
)
1314 struct drm_plane
*plane
;
1317 drm_for_each_plane(plane
, dev
) {
1324 EXPORT_SYMBOL(drm_plane_from_index
);
1327 * drm_plane_force_disable - Forcibly disable a plane
1328 * @plane: plane to disable
1330 * Forces the plane to be disabled.
1332 * Used when the plane's current framebuffer is destroyed,
1333 * and when restoring fbdev mode.
1335 void drm_plane_force_disable(struct drm_plane
*plane
)
1342 plane
->old_fb
= plane
->fb
;
1343 ret
= plane
->funcs
->disable_plane(plane
);
1345 DRM_ERROR("failed to disable plane with busy fb\n");
1346 plane
->old_fb
= NULL
;
1349 /* disconnect the plane from the fb and crtc: */
1350 drm_framebuffer_unreference(plane
->old_fb
);
1351 plane
->old_fb
= NULL
;
1355 EXPORT_SYMBOL(drm_plane_force_disable
);
1357 static int drm_mode_create_standard_properties(struct drm_device
*dev
)
1359 struct drm_property
*prop
;
1362 * Standard properties (apply to all connectors)
1364 prop
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1365 DRM_MODE_PROP_IMMUTABLE
,
1369 dev
->mode_config
.edid_property
= prop
;
1371 prop
= drm_property_create_enum(dev
, 0,
1372 "DPMS", drm_dpms_enum_list
,
1373 ARRAY_SIZE(drm_dpms_enum_list
));
1376 dev
->mode_config
.dpms_property
= prop
;
1378 prop
= drm_property_create(dev
,
1379 DRM_MODE_PROP_BLOB
|
1380 DRM_MODE_PROP_IMMUTABLE
,
1384 dev
->mode_config
.path_property
= prop
;
1386 prop
= drm_property_create(dev
,
1387 DRM_MODE_PROP_BLOB
|
1388 DRM_MODE_PROP_IMMUTABLE
,
1392 dev
->mode_config
.tile_property
= prop
;
1394 prop
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1395 "type", drm_plane_type_enum_list
,
1396 ARRAY_SIZE(drm_plane_type_enum_list
));
1399 dev
->mode_config
.plane_type_property
= prop
;
1401 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1402 "SRC_X", 0, UINT_MAX
);
1405 dev
->mode_config
.prop_src_x
= prop
;
1407 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1408 "SRC_Y", 0, UINT_MAX
);
1411 dev
->mode_config
.prop_src_y
= prop
;
1413 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1414 "SRC_W", 0, UINT_MAX
);
1417 dev
->mode_config
.prop_src_w
= prop
;
1419 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1420 "SRC_H", 0, UINT_MAX
);
1423 dev
->mode_config
.prop_src_h
= prop
;
1425 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1426 "CRTC_X", INT_MIN
, INT_MAX
);
1429 dev
->mode_config
.prop_crtc_x
= prop
;
1431 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1432 "CRTC_Y", INT_MIN
, INT_MAX
);
1435 dev
->mode_config
.prop_crtc_y
= prop
;
1437 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1438 "CRTC_W", 0, INT_MAX
);
1441 dev
->mode_config
.prop_crtc_w
= prop
;
1443 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1444 "CRTC_H", 0, INT_MAX
);
1447 dev
->mode_config
.prop_crtc_h
= prop
;
1449 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1450 "FB_ID", DRM_MODE_OBJECT_FB
);
1453 dev
->mode_config
.prop_fb_id
= prop
;
1455 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1456 "CRTC_ID", DRM_MODE_OBJECT_CRTC
);
1459 dev
->mode_config
.prop_crtc_id
= prop
;
1461 prop
= drm_property_create_bool(dev
, DRM_MODE_PROP_ATOMIC
,
1465 dev
->mode_config
.prop_active
= prop
;
1467 prop
= drm_property_create(dev
,
1468 DRM_MODE_PROP_ATOMIC
| DRM_MODE_PROP_BLOB
,
1472 dev
->mode_config
.prop_mode_id
= prop
;
1478 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1481 * Called by a driver the first time a DVI-I connector is made.
1483 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1485 struct drm_property
*dvi_i_selector
;
1486 struct drm_property
*dvi_i_subconnector
;
1488 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1492 drm_property_create_enum(dev
, 0,
1493 "select subconnector",
1494 drm_dvi_i_select_enum_list
,
1495 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1496 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1498 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1500 drm_dvi_i_subconnector_enum_list
,
1501 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1502 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1506 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1509 * drm_create_tv_properties - create TV specific connector properties
1511 * @num_modes: number of different TV formats (modes) supported
1512 * @modes: array of pointers to strings containing name of each format
1514 * Called by a driver's TV initialization routine, this function creates
1515 * the TV specific connector properties for a given device. Caller is
1516 * responsible for allocating a list of format names and passing them to
1519 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1520 unsigned int num_modes
,
1521 const char * const modes
[])
1523 struct drm_property
*tv_selector
;
1524 struct drm_property
*tv_subconnector
;
1527 if (dev
->mode_config
.tv_select_subconnector_property
)
1531 * Basic connector properties
1533 tv_selector
= drm_property_create_enum(dev
, 0,
1534 "select subconnector",
1535 drm_tv_select_enum_list
,
1536 ARRAY_SIZE(drm_tv_select_enum_list
));
1537 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1540 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1542 drm_tv_subconnector_enum_list
,
1543 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1544 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1547 * Other, TV specific properties: margins & TV modes.
1549 dev
->mode_config
.tv_left_margin_property
=
1550 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1552 dev
->mode_config
.tv_right_margin_property
=
1553 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1555 dev
->mode_config
.tv_top_margin_property
=
1556 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1558 dev
->mode_config
.tv_bottom_margin_property
=
1559 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1561 dev
->mode_config
.tv_mode_property
=
1562 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1564 for (i
= 0; i
< num_modes
; i
++)
1565 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1568 dev
->mode_config
.tv_brightness_property
=
1569 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1571 dev
->mode_config
.tv_contrast_property
=
1572 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1574 dev
->mode_config
.tv_flicker_reduction_property
=
1575 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1577 dev
->mode_config
.tv_overscan_property
=
1578 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1580 dev
->mode_config
.tv_saturation_property
=
1581 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1583 dev
->mode_config
.tv_hue_property
=
1584 drm_property_create_range(dev
, 0, "hue", 0, 100);
1588 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1591 * drm_mode_create_scaling_mode_property - create scaling mode property
1594 * Called by a driver the first time it's needed, must be attached to desired
1597 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1599 struct drm_property
*scaling_mode
;
1601 if (dev
->mode_config
.scaling_mode_property
)
1605 drm_property_create_enum(dev
, 0, "scaling mode",
1606 drm_scaling_mode_enum_list
,
1607 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1609 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1613 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1616 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1619 * Called by a driver the first time it's needed, must be attached to desired
1623 * Zero on success, negative errno on failure.
1625 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1627 if (dev
->mode_config
.aspect_ratio_property
)
1630 dev
->mode_config
.aspect_ratio_property
=
1631 drm_property_create_enum(dev
, 0, "aspect ratio",
1632 drm_aspect_ratio_enum_list
,
1633 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1635 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1640 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1643 * drm_mode_create_dirty_property - create dirty property
1646 * Called by a driver the first time it's needed, must be attached to desired
1649 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1651 struct drm_property
*dirty_info
;
1653 if (dev
->mode_config
.dirty_info_property
)
1657 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1659 drm_dirty_info_enum_list
,
1660 ARRAY_SIZE(drm_dirty_info_enum_list
));
1661 dev
->mode_config
.dirty_info_property
= dirty_info
;
1665 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1668 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1671 * Create the the suggested x/y offset property for connectors.
1673 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1675 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1678 dev
->mode_config
.suggested_x_property
=
1679 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1681 dev
->mode_config
.suggested_y_property
=
1682 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1684 if (dev
->mode_config
.suggested_x_property
== NULL
||
1685 dev
->mode_config
.suggested_y_property
== NULL
)
1689 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1692 * drm_mode_getresources - get graphics configuration
1693 * @dev: drm device for the ioctl
1694 * @data: data pointer for the ioctl
1695 * @file_priv: drm file for the ioctl call
1697 * Construct a set of configuration description structures and return
1698 * them to the user, including CRTC, connector and framebuffer configuration.
1700 * Called by the user via ioctl.
1703 * Zero on success, negative errno on failure.
1705 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1706 struct drm_file
*file_priv
)
1708 struct drm_mode_card_res
*card_res
= data
;
1709 struct list_head
*lh
;
1710 struct drm_framebuffer
*fb
;
1711 struct drm_connector
*connector
;
1712 struct drm_crtc
*crtc
;
1713 struct drm_encoder
*encoder
;
1715 int connector_count
= 0;
1718 int encoder_count
= 0;
1720 uint32_t __user
*fb_id
;
1721 uint32_t __user
*crtc_id
;
1722 uint32_t __user
*connector_id
;
1723 uint32_t __user
*encoder_id
;
1725 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1729 mutex_lock(&file_priv
->fbs_lock
);
1731 * For the non-control nodes we need to limit the list of resources
1732 * by IDs in the group list for this node
1734 list_for_each(lh
, &file_priv
->fbs
)
1737 /* handle this in 4 parts */
1739 if (card_res
->count_fbs
>= fb_count
) {
1741 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1742 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1743 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1744 mutex_unlock(&file_priv
->fbs_lock
);
1750 card_res
->count_fbs
= fb_count
;
1751 mutex_unlock(&file_priv
->fbs_lock
);
1753 /* mode_config.mutex protects the connector list against e.g. DP MST
1754 * connector hot-adding. CRTC/Plane lists are invariant. */
1755 mutex_lock(&dev
->mode_config
.mutex
);
1756 drm_for_each_crtc(crtc
, dev
)
1759 drm_for_each_connector(connector
, dev
)
1762 drm_for_each_encoder(encoder
, dev
)
1765 card_res
->max_height
= dev
->mode_config
.max_height
;
1766 card_res
->min_height
= dev
->mode_config
.min_height
;
1767 card_res
->max_width
= dev
->mode_config
.max_width
;
1768 card_res
->min_width
= dev
->mode_config
.min_width
;
1771 if (card_res
->count_crtcs
>= crtc_count
) {
1773 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1774 drm_for_each_crtc(crtc
, dev
) {
1775 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1776 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1783 card_res
->count_crtcs
= crtc_count
;
1786 if (card_res
->count_encoders
>= encoder_count
) {
1788 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1789 drm_for_each_encoder(encoder
, dev
) {
1790 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1792 if (put_user(encoder
->base
.id
, encoder_id
+
1800 card_res
->count_encoders
= encoder_count
;
1803 if (card_res
->count_connectors
>= connector_count
) {
1805 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1806 drm_for_each_connector(connector
, dev
) {
1807 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1810 if (put_user(connector
->base
.id
,
1811 connector_id
+ copied
)) {
1818 card_res
->count_connectors
= connector_count
;
1820 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1821 card_res
->count_connectors
, card_res
->count_encoders
);
1824 mutex_unlock(&dev
->mode_config
.mutex
);
1829 * drm_mode_getcrtc - get CRTC configuration
1830 * @dev: drm device for the ioctl
1831 * @data: data pointer for the ioctl
1832 * @file_priv: drm file for the ioctl call
1834 * Construct a CRTC configuration structure to return to the user.
1836 * Called by the user via ioctl.
1839 * Zero on success, negative errno on failure.
1841 int drm_mode_getcrtc(struct drm_device
*dev
,
1842 void *data
, struct drm_file
*file_priv
)
1844 struct drm_mode_crtc
*crtc_resp
= data
;
1845 struct drm_crtc
*crtc
;
1847 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1850 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
1854 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
1855 crtc_resp
->gamma_size
= crtc
->gamma_size
;
1856 if (crtc
->primary
->fb
)
1857 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
1859 crtc_resp
->fb_id
= 0;
1862 crtc_resp
->x
= crtc
->primary
->state
->src_x
>> 16;
1863 crtc_resp
->y
= crtc
->primary
->state
->src_y
>> 16;
1864 if (crtc
->state
->enable
) {
1865 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->state
->mode
);
1866 crtc_resp
->mode_valid
= 1;
1869 crtc_resp
->mode_valid
= 0;
1872 crtc_resp
->x
= crtc
->x
;
1873 crtc_resp
->y
= crtc
->y
;
1874 if (crtc
->enabled
) {
1875 drm_mode_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
1876 crtc_resp
->mode_valid
= 1;
1879 crtc_resp
->mode_valid
= 0;
1882 drm_modeset_unlock_crtc(crtc
);
1887 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1888 const struct drm_file
*file_priv
)
1891 * If user-space hasn't configured the driver to expose the stereo 3D
1892 * modes, don't expose them.
1894 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
1900 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
1902 /* For atomic drivers only state objects are synchronously updated and
1903 * protected by modeset locks, so check those first. */
1904 if (connector
->state
)
1905 return connector
->state
->best_encoder
;
1906 return connector
->encoder
;
1909 /* helper for getconnector and getproperties ioctls */
1910 static int get_properties(struct drm_mode_object
*obj
, bool atomic
,
1911 uint32_t __user
*prop_ptr
, uint64_t __user
*prop_values
,
1912 uint32_t *arg_count_props
)
1917 props_count
= obj
->properties
->count
;
1919 props_count
-= obj
->properties
->atomic_count
;
1921 if ((*arg_count_props
>= props_count
) && props_count
) {
1922 for (i
= 0, copied
= 0; copied
< props_count
; i
++) {
1923 struct drm_property
*prop
= obj
->properties
->properties
[i
];
1926 if ((prop
->flags
& DRM_MODE_PROP_ATOMIC
) && !atomic
)
1929 ret
= drm_object_property_get_value(obj
, prop
, &val
);
1933 if (put_user(prop
->base
.id
, prop_ptr
+ copied
))
1936 if (put_user(val
, prop_values
+ copied
))
1942 *arg_count_props
= props_count
;
1948 * drm_mode_getconnector - get connector configuration
1949 * @dev: drm device for the ioctl
1950 * @data: data pointer for the ioctl
1951 * @file_priv: drm file for the ioctl call
1953 * Construct a connector configuration structure to return to the user.
1955 * Called by the user via ioctl.
1958 * Zero on success, negative errno on failure.
1960 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
1961 struct drm_file
*file_priv
)
1963 struct drm_mode_get_connector
*out_resp
= data
;
1964 struct drm_connector
*connector
;
1965 struct drm_encoder
*encoder
;
1966 struct drm_display_mode
*mode
;
1968 int encoders_count
= 0;
1972 struct drm_mode_modeinfo u_mode
;
1973 struct drm_mode_modeinfo __user
*mode_ptr
;
1974 uint32_t __user
*encoder_ptr
;
1976 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1979 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
1981 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
1983 mutex_lock(&dev
->mode_config
.mutex
);
1985 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
1991 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++)
1992 if (connector
->encoder_ids
[i
] != 0)
1995 if (out_resp
->count_modes
== 0) {
1996 connector
->funcs
->fill_modes(connector
,
1997 dev
->mode_config
.max_width
,
1998 dev
->mode_config
.max_height
);
2001 /* delayed so we get modes regardless of pre-fill_modes state */
2002 list_for_each_entry(mode
, &connector
->modes
, head
)
2003 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2006 out_resp
->connector_id
= connector
->base
.id
;
2007 out_resp
->connector_type
= connector
->connector_type
;
2008 out_resp
->connector_type_id
= connector
->connector_type_id
;
2009 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2010 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2011 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2012 out_resp
->connection
= connector
->status
;
2014 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2015 encoder
= drm_connector_get_encoder(connector
);
2017 out_resp
->encoder_id
= encoder
->base
.id
;
2019 out_resp
->encoder_id
= 0;
2022 * This ioctl is called twice, once to determine how much space is
2023 * needed, and the 2nd time to fill it.
2025 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2027 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2028 list_for_each_entry(mode
, &connector
->modes
, head
) {
2029 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2032 drm_mode_convert_to_umode(&u_mode
, mode
);
2033 if (copy_to_user(mode_ptr
+ copied
,
2034 &u_mode
, sizeof(u_mode
))) {
2041 out_resp
->count_modes
= mode_count
;
2043 ret
= get_properties(&connector
->base
, file_priv
->atomic
,
2044 (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
),
2045 (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
),
2046 &out_resp
->count_props
);
2050 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2052 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2053 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2054 if (connector
->encoder_ids
[i
] != 0) {
2055 if (put_user(connector
->encoder_ids
[i
],
2056 encoder_ptr
+ copied
)) {
2064 out_resp
->count_encoders
= encoders_count
;
2067 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2070 mutex_unlock(&dev
->mode_config
.mutex
);
2075 static struct drm_crtc
*drm_encoder_get_crtc(struct drm_encoder
*encoder
)
2077 struct drm_connector
*connector
;
2078 struct drm_device
*dev
= encoder
->dev
;
2079 bool uses_atomic
= false;
2081 /* For atomic drivers only state objects are synchronously updated and
2082 * protected by modeset locks, so check those first. */
2083 drm_for_each_connector(connector
, dev
) {
2084 if (!connector
->state
)
2089 if (connector
->state
->best_encoder
!= encoder
)
2092 return connector
->state
->crtc
;
2095 /* Don't return stale data (e.g. pending async disable). */
2099 return encoder
->crtc
;
2103 * drm_mode_getencoder - get encoder configuration
2104 * @dev: drm device for the ioctl
2105 * @data: data pointer for the ioctl
2106 * @file_priv: drm file for the ioctl call
2108 * Construct a encoder configuration structure to return to the user.
2110 * Called by the user via ioctl.
2113 * Zero on success, negative errno on failure.
2115 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2116 struct drm_file
*file_priv
)
2118 struct drm_mode_get_encoder
*enc_resp
= data
;
2119 struct drm_encoder
*encoder
;
2120 struct drm_crtc
*crtc
;
2122 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2125 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2129 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2130 crtc
= drm_encoder_get_crtc(encoder
);
2132 enc_resp
->crtc_id
= crtc
->base
.id
;
2134 enc_resp
->crtc_id
= 0;
2135 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2137 enc_resp
->encoder_type
= encoder
->encoder_type
;
2138 enc_resp
->encoder_id
= encoder
->base
.id
;
2139 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2140 enc_resp
->possible_clones
= encoder
->possible_clones
;
2146 * drm_mode_getplane_res - enumerate all plane resources
2149 * @file_priv: DRM file info
2151 * Construct a list of plane ids to return to the user.
2153 * Called by the user via ioctl.
2156 * Zero on success, negative errno on failure.
2158 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2159 struct drm_file
*file_priv
)
2161 struct drm_mode_get_plane_res
*plane_resp
= data
;
2162 struct drm_mode_config
*config
;
2163 struct drm_plane
*plane
;
2164 uint32_t __user
*plane_ptr
;
2166 unsigned num_planes
;
2168 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2171 config
= &dev
->mode_config
;
2173 if (file_priv
->universal_planes
)
2174 num_planes
= config
->num_total_plane
;
2176 num_planes
= config
->num_overlay_plane
;
2179 * This ioctl is called twice, once to determine how much space is
2180 * needed, and the 2nd time to fill it.
2183 (plane_resp
->count_planes
>= num_planes
)) {
2184 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2186 /* Plane lists are invariant, no locking needed. */
2187 drm_for_each_plane(plane
, dev
) {
2189 * Unless userspace set the 'universal planes'
2190 * capability bit, only advertise overlays.
2192 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2193 !file_priv
->universal_planes
)
2196 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2201 plane_resp
->count_planes
= num_planes
;
2207 * drm_mode_getplane - get plane configuration
2210 * @file_priv: DRM file info
2212 * Construct a plane configuration structure to return to the user.
2214 * Called by the user via ioctl.
2217 * Zero on success, negative errno on failure.
2219 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2220 struct drm_file
*file_priv
)
2222 struct drm_mode_get_plane
*plane_resp
= data
;
2223 struct drm_plane
*plane
;
2224 uint32_t __user
*format_ptr
;
2226 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2229 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2233 drm_modeset_lock(&plane
->mutex
, NULL
);
2235 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2237 plane_resp
->crtc_id
= 0;
2240 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2242 plane_resp
->fb_id
= 0;
2243 drm_modeset_unlock(&plane
->mutex
);
2245 plane_resp
->plane_id
= plane
->base
.id
;
2246 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2247 plane_resp
->gamma_size
= 0;
2250 * This ioctl is called twice, once to determine how much space is
2251 * needed, and the 2nd time to fill it.
2253 if (plane
->format_count
&&
2254 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2255 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2256 if (copy_to_user(format_ptr
,
2257 plane
->format_types
,
2258 sizeof(uint32_t) * plane
->format_count
)) {
2262 plane_resp
->count_format_types
= plane
->format_count
;
2268 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2269 * @plane: plane to check for format support
2270 * @format: the pixel format
2273 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2276 int drm_plane_check_pixel_format(const struct drm_plane
*plane
, u32 format
)
2280 for (i
= 0; i
< plane
->format_count
; i
++) {
2281 if (format
== plane
->format_types
[i
])
2289 * setplane_internal - setplane handler for internal callers
2291 * Note that we assume an extra reference has already been taken on fb. If the
2292 * update fails, this reference will be dropped before return; if it succeeds,
2293 * the previous framebuffer (if any) will be unreferenced instead.
2295 * src_{x,y,w,h} are provided in 16.16 fixed point format
2297 static int __setplane_internal(struct drm_plane
*plane
,
2298 struct drm_crtc
*crtc
,
2299 struct drm_framebuffer
*fb
,
2300 int32_t crtc_x
, int32_t crtc_y
,
2301 uint32_t crtc_w
, uint32_t crtc_h
,
2302 /* src_{x,y,w,h} values are 16.16 fixed point */
2303 uint32_t src_x
, uint32_t src_y
,
2304 uint32_t src_w
, uint32_t src_h
)
2307 unsigned int fb_width
, fb_height
;
2309 /* No fb means shut it down */
2311 plane
->old_fb
= plane
->fb
;
2312 ret
= plane
->funcs
->disable_plane(plane
);
2317 plane
->old_fb
= NULL
;
2322 /* Check whether this plane is usable on this CRTC */
2323 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2324 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2329 /* Check whether this plane supports the fb pixel format. */
2330 ret
= drm_plane_check_pixel_format(plane
, fb
->pixel_format
);
2332 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2333 drm_get_format_name(fb
->pixel_format
));
2337 /* Give drivers some help against integer overflows */
2338 if (crtc_w
> INT_MAX
||
2339 crtc_x
> INT_MAX
- (int32_t) crtc_w
||
2341 crtc_y
> INT_MAX
- (int32_t) crtc_h
) {
2342 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2343 crtc_w
, crtc_h
, crtc_x
, crtc_y
);
2348 fb_width
= fb
->width
<< 16;
2349 fb_height
= fb
->height
<< 16;
2351 /* Make sure source coordinates are inside the fb. */
2352 if (src_w
> fb_width
||
2353 src_x
> fb_width
- src_w
||
2354 src_h
> fb_height
||
2355 src_y
> fb_height
- src_h
) {
2356 DRM_DEBUG_KMS("Invalid source coordinates "
2357 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2358 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2359 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2360 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2361 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2366 plane
->old_fb
= plane
->fb
;
2367 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2368 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2369 src_x
, src_y
, src_w
, src_h
);
2375 plane
->old_fb
= NULL
;
2380 drm_framebuffer_unreference(fb
);
2382 drm_framebuffer_unreference(plane
->old_fb
);
2383 plane
->old_fb
= NULL
;
2388 static int setplane_internal(struct drm_plane
*plane
,
2389 struct drm_crtc
*crtc
,
2390 struct drm_framebuffer
*fb
,
2391 int32_t crtc_x
, int32_t crtc_y
,
2392 uint32_t crtc_w
, uint32_t crtc_h
,
2393 /* src_{x,y,w,h} values are 16.16 fixed point */
2394 uint32_t src_x
, uint32_t src_y
,
2395 uint32_t src_w
, uint32_t src_h
)
2399 drm_modeset_lock_all(plane
->dev
);
2400 ret
= __setplane_internal(plane
, crtc
, fb
,
2401 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2402 src_x
, src_y
, src_w
, src_h
);
2403 drm_modeset_unlock_all(plane
->dev
);
2409 * drm_mode_setplane - configure a plane's configuration
2411 * @data: ioctl data*
2412 * @file_priv: DRM file info
2414 * Set plane configuration, including placement, fb, scaling, and other factors.
2415 * Or pass a NULL fb to disable (planes may be disabled without providing a
2419 * Zero on success, negative errno on failure.
2421 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2422 struct drm_file
*file_priv
)
2424 struct drm_mode_set_plane
*plane_req
= data
;
2425 struct drm_plane
*plane
;
2426 struct drm_crtc
*crtc
= NULL
;
2427 struct drm_framebuffer
*fb
= NULL
;
2429 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2433 * First, find the plane, crtc, and fb objects. If not available,
2434 * we don't bother to call the driver.
2436 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
2438 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2439 plane_req
->plane_id
);
2443 if (plane_req
->fb_id
) {
2444 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2446 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2451 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
2453 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2454 plane_req
->crtc_id
);
2460 * setplane_internal will take care of deref'ing either the old or new
2461 * framebuffer depending on success.
2463 return setplane_internal(plane
, crtc
, fb
,
2464 plane_req
->crtc_x
, plane_req
->crtc_y
,
2465 plane_req
->crtc_w
, plane_req
->crtc_h
,
2466 plane_req
->src_x
, plane_req
->src_y
,
2467 plane_req
->src_w
, plane_req
->src_h
);
2471 * drm_mode_set_config_internal - helper to call ->set_config
2472 * @set: modeset config to set
2474 * This is a little helper to wrap internal calls to the ->set_config driver
2475 * interface. The only thing it adds is correct refcounting dance.
2478 * Zero on success, negative errno on failure.
2480 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2482 struct drm_crtc
*crtc
= set
->crtc
;
2483 struct drm_framebuffer
*fb
;
2484 struct drm_crtc
*tmp
;
2488 * NOTE: ->set_config can also disable other crtcs (if we steal all
2489 * connectors from it), hence we need to refcount the fbs across all
2490 * crtcs. Atomic modeset will have saner semantics ...
2492 drm_for_each_crtc(tmp
, crtc
->dev
)
2493 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2497 ret
= crtc
->funcs
->set_config(set
);
2499 crtc
->primary
->crtc
= crtc
;
2500 crtc
->primary
->fb
= fb
;
2503 drm_for_each_crtc(tmp
, crtc
->dev
) {
2504 if (tmp
->primary
->fb
)
2505 drm_framebuffer_reference(tmp
->primary
->fb
);
2506 if (tmp
->primary
->old_fb
)
2507 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2508 tmp
->primary
->old_fb
= NULL
;
2513 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2516 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2517 * @mode: mode to query
2518 * @hdisplay: hdisplay value to fill in
2519 * @vdisplay: vdisplay value to fill in
2521 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2522 * the appropriate layout.
2524 void drm_crtc_get_hv_timing(const struct drm_display_mode
*mode
,
2525 int *hdisplay
, int *vdisplay
)
2527 struct drm_display_mode adjusted
;
2529 drm_mode_copy(&adjusted
, mode
);
2530 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE_ONLY
);
2531 *hdisplay
= adjusted
.crtc_hdisplay
;
2532 *vdisplay
= adjusted
.crtc_vdisplay
;
2534 EXPORT_SYMBOL(drm_crtc_get_hv_timing
);
2537 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2539 * @crtc: CRTC that framebuffer will be displayed on
2542 * @mode: mode that framebuffer will be displayed under
2543 * @fb: framebuffer to check size of
2545 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2547 const struct drm_display_mode
*mode
,
2548 const struct drm_framebuffer
*fb
)
2551 int hdisplay
, vdisplay
;
2553 drm_crtc_get_hv_timing(mode
, &hdisplay
, &vdisplay
);
2555 if (crtc
->invert_dimensions
)
2556 swap(hdisplay
, vdisplay
);
2558 if (hdisplay
> fb
->width
||
2559 vdisplay
> fb
->height
||
2560 x
> fb
->width
- hdisplay
||
2561 y
> fb
->height
- vdisplay
) {
2562 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2563 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2564 crtc
->invert_dimensions
? " (inverted)" : "");
2570 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2573 * drm_mode_setcrtc - set CRTC configuration
2574 * @dev: drm device for the ioctl
2575 * @data: data pointer for the ioctl
2576 * @file_priv: drm file for the ioctl call
2578 * Build a new CRTC configuration based on user request.
2580 * Called by the user via ioctl.
2583 * Zero on success, negative errno on failure.
2585 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2586 struct drm_file
*file_priv
)
2588 struct drm_mode_config
*config
= &dev
->mode_config
;
2589 struct drm_mode_crtc
*crtc_req
= data
;
2590 struct drm_crtc
*crtc
;
2591 struct drm_connector
**connector_set
= NULL
, *connector
;
2592 struct drm_framebuffer
*fb
= NULL
;
2593 struct drm_display_mode
*mode
= NULL
;
2594 struct drm_mode_set set
;
2595 uint32_t __user
*set_connectors_ptr
;
2599 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2603 * Universal plane src offsets are only 16.16, prevent havoc for
2604 * drivers using universal plane code internally.
2606 if (crtc_req
->x
& 0xffff0000 || crtc_req
->y
& 0xffff0000)
2609 drm_modeset_lock_all(dev
);
2610 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2612 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2616 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2618 if (crtc_req
->mode_valid
) {
2619 /* If we have a mode we need a framebuffer. */
2620 /* If we pass -1, set the mode with the currently bound fb */
2621 if (crtc_req
->fb_id
== -1) {
2622 if (!crtc
->primary
->fb
) {
2623 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2627 fb
= crtc
->primary
->fb
;
2628 /* Make refcounting symmetric with the lookup path. */
2629 drm_framebuffer_reference(fb
);
2631 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2633 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2640 mode
= drm_mode_create(dev
);
2646 ret
= drm_mode_convert_umode(mode
, &crtc_req
->mode
);
2648 DRM_DEBUG_KMS("Invalid mode\n");
2652 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2655 * Check whether the primary plane supports the fb pixel format.
2656 * Drivers not implementing the universal planes API use a
2657 * default formats list provided by the DRM core which doesn't
2658 * match real hardware capabilities. Skip the check in that
2661 if (!crtc
->primary
->format_default
) {
2662 ret
= drm_plane_check_pixel_format(crtc
->primary
,
2665 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2666 drm_get_format_name(fb
->pixel_format
));
2671 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2678 if (crtc_req
->count_connectors
== 0 && mode
) {
2679 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2684 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2685 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2686 crtc_req
->count_connectors
);
2691 if (crtc_req
->count_connectors
> 0) {
2694 /* Avoid unbounded kernel memory allocation */
2695 if (crtc_req
->count_connectors
> config
->num_connector
) {
2700 connector_set
= kmalloc_array(crtc_req
->count_connectors
,
2701 sizeof(struct drm_connector
*),
2703 if (!connector_set
) {
2708 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2709 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2710 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2715 connector
= drm_connector_find(dev
, out_id
);
2717 DRM_DEBUG_KMS("Connector id %d unknown\n",
2722 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2726 connector_set
[i
] = connector
;
2731 set
.x
= crtc_req
->x
;
2732 set
.y
= crtc_req
->y
;
2734 set
.connectors
= connector_set
;
2735 set
.num_connectors
= crtc_req
->count_connectors
;
2737 ret
= drm_mode_set_config_internal(&set
);
2741 drm_framebuffer_unreference(fb
);
2743 kfree(connector_set
);
2744 drm_mode_destroy(dev
, mode
);
2745 drm_modeset_unlock_all(dev
);
2750 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2751 * universal plane handler call
2752 * @crtc: crtc to update cursor for
2753 * @req: data pointer for the ioctl
2754 * @file_priv: drm file for the ioctl call
2756 * Legacy cursor ioctl's work directly with driver buffer handles. To
2757 * translate legacy ioctl calls into universal plane handler calls, we need to
2758 * wrap the native buffer handle in a drm_framebuffer.
2760 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2761 * buffer with a pitch of 4*width; the universal plane interface should be used
2762 * directly in cases where the hardware can support other buffer settings and
2763 * userspace wants to make use of these capabilities.
2766 * Zero on success, negative errno on failure.
2768 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2769 struct drm_mode_cursor2
*req
,
2770 struct drm_file
*file_priv
)
2772 struct drm_device
*dev
= crtc
->dev
;
2773 struct drm_framebuffer
*fb
= NULL
;
2774 struct drm_mode_fb_cmd2 fbreq
= {
2775 .width
= req
->width
,
2776 .height
= req
->height
,
2777 .pixel_format
= DRM_FORMAT_ARGB8888
,
2778 .pitches
= { req
->width
* 4 },
2779 .handles
= { req
->handle
},
2781 int32_t crtc_x
, crtc_y
;
2782 uint32_t crtc_w
= 0, crtc_h
= 0;
2783 uint32_t src_w
= 0, src_h
= 0;
2786 BUG_ON(!crtc
->cursor
);
2787 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2790 * Obtain fb we'll be using (either new or existing) and take an extra
2791 * reference to it if fb != null. setplane will take care of dropping
2792 * the reference if the plane update fails.
2794 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2796 fb
= internal_framebuffer_create(dev
, &fbreq
, file_priv
);
2798 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2805 fb
= crtc
->cursor
->fb
;
2807 drm_framebuffer_reference(fb
);
2810 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2814 crtc_x
= crtc
->cursor_x
;
2815 crtc_y
= crtc
->cursor_y
;
2820 crtc_h
= fb
->height
;
2821 src_w
= fb
->width
<< 16;
2822 src_h
= fb
->height
<< 16;
2826 * setplane_internal will take care of deref'ing either the old or new
2827 * framebuffer depending on success.
2829 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2830 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2831 0, 0, src_w
, src_h
);
2833 /* Update successful; save new cursor position, if necessary */
2834 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2835 crtc
->cursor_x
= req
->x
;
2836 crtc
->cursor_y
= req
->y
;
2842 static int drm_mode_cursor_common(struct drm_device
*dev
,
2843 struct drm_mode_cursor2
*req
,
2844 struct drm_file
*file_priv
)
2846 struct drm_crtc
*crtc
;
2849 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2852 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2855 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2857 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2862 * If this crtc has a universal cursor plane, call that plane's update
2863 * handler rather than using legacy cursor handlers.
2865 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
2867 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2871 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2872 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2876 /* Turns off the cursor if handle is 0 */
2877 if (crtc
->funcs
->cursor_set2
)
2878 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2879 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2881 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2882 req
->width
, req
->height
);
2885 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2886 if (crtc
->funcs
->cursor_move
) {
2887 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
2894 drm_modeset_unlock_crtc(crtc
);
2902 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2903 * @dev: drm device for the ioctl
2904 * @data: data pointer for the ioctl
2905 * @file_priv: drm file for the ioctl call
2907 * Set the cursor configuration based on user request.
2909 * Called by the user via ioctl.
2912 * Zero on success, negative errno on failure.
2914 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
2915 void *data
, struct drm_file
*file_priv
)
2917 struct drm_mode_cursor
*req
= data
;
2918 struct drm_mode_cursor2 new_req
;
2920 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
2921 new_req
.hot_x
= new_req
.hot_y
= 0;
2923 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
2927 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2928 * @dev: drm device for the ioctl
2929 * @data: data pointer for the ioctl
2930 * @file_priv: drm file for the ioctl call
2932 * Set the cursor configuration based on user request. This implements the 2nd
2933 * version of the cursor ioctl, which allows userspace to additionally specify
2934 * the hotspot of the pointer.
2936 * Called by the user via ioctl.
2939 * Zero on success, negative errno on failure.
2941 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
2942 void *data
, struct drm_file
*file_priv
)
2944 struct drm_mode_cursor2
*req
= data
;
2946 return drm_mode_cursor_common(dev
, req
, file_priv
);
2950 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2951 * @bpp: bits per pixels
2952 * @depth: bit depth per pixel
2954 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2955 * Useful in fbdev emulation code, since that deals in those values.
2957 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
2963 fmt
= DRM_FORMAT_C8
;
2967 fmt
= DRM_FORMAT_XRGB1555
;
2969 fmt
= DRM_FORMAT_RGB565
;
2972 fmt
= DRM_FORMAT_RGB888
;
2976 fmt
= DRM_FORMAT_XRGB8888
;
2977 else if (depth
== 30)
2978 fmt
= DRM_FORMAT_XRGB2101010
;
2980 fmt
= DRM_FORMAT_ARGB8888
;
2983 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2984 fmt
= DRM_FORMAT_XRGB8888
;
2990 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
2993 * drm_mode_addfb - add an FB to the graphics configuration
2994 * @dev: drm device for the ioctl
2995 * @data: data pointer for the ioctl
2996 * @file_priv: drm file for the ioctl call
2998 * Add a new FB to the specified CRTC, given a user request. This is the
2999 * original addfb ioctl which only supported RGB formats.
3001 * Called by the user via ioctl.
3004 * Zero on success, negative errno on failure.
3006 int drm_mode_addfb(struct drm_device
*dev
,
3007 void *data
, struct drm_file
*file_priv
)
3009 struct drm_mode_fb_cmd
*or = data
;
3010 struct drm_mode_fb_cmd2 r
= {};
3013 /* convert to new format and call new ioctl */
3014 r
.fb_id
= or->fb_id
;
3015 r
.width
= or->width
;
3016 r
.height
= or->height
;
3017 r
.pitches
[0] = or->pitch
;
3018 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
3019 r
.handles
[0] = or->handle
;
3021 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
3025 or->fb_id
= r
.fb_id
;
3030 static int format_check(const struct drm_mode_fb_cmd2
*r
)
3032 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3036 case DRM_FORMAT_RGB332
:
3037 case DRM_FORMAT_BGR233
:
3038 case DRM_FORMAT_XRGB4444
:
3039 case DRM_FORMAT_XBGR4444
:
3040 case DRM_FORMAT_RGBX4444
:
3041 case DRM_FORMAT_BGRX4444
:
3042 case DRM_FORMAT_ARGB4444
:
3043 case DRM_FORMAT_ABGR4444
:
3044 case DRM_FORMAT_RGBA4444
:
3045 case DRM_FORMAT_BGRA4444
:
3046 case DRM_FORMAT_XRGB1555
:
3047 case DRM_FORMAT_XBGR1555
:
3048 case DRM_FORMAT_RGBX5551
:
3049 case DRM_FORMAT_BGRX5551
:
3050 case DRM_FORMAT_ARGB1555
:
3051 case DRM_FORMAT_ABGR1555
:
3052 case DRM_FORMAT_RGBA5551
:
3053 case DRM_FORMAT_BGRA5551
:
3054 case DRM_FORMAT_RGB565
:
3055 case DRM_FORMAT_BGR565
:
3056 case DRM_FORMAT_RGB888
:
3057 case DRM_FORMAT_BGR888
:
3058 case DRM_FORMAT_XRGB8888
:
3059 case DRM_FORMAT_XBGR8888
:
3060 case DRM_FORMAT_RGBX8888
:
3061 case DRM_FORMAT_BGRX8888
:
3062 case DRM_FORMAT_ARGB8888
:
3063 case DRM_FORMAT_ABGR8888
:
3064 case DRM_FORMAT_RGBA8888
:
3065 case DRM_FORMAT_BGRA8888
:
3066 case DRM_FORMAT_XRGB2101010
:
3067 case DRM_FORMAT_XBGR2101010
:
3068 case DRM_FORMAT_RGBX1010102
:
3069 case DRM_FORMAT_BGRX1010102
:
3070 case DRM_FORMAT_ARGB2101010
:
3071 case DRM_FORMAT_ABGR2101010
:
3072 case DRM_FORMAT_RGBA1010102
:
3073 case DRM_FORMAT_BGRA1010102
:
3074 case DRM_FORMAT_YUYV
:
3075 case DRM_FORMAT_YVYU
:
3076 case DRM_FORMAT_UYVY
:
3077 case DRM_FORMAT_VYUY
:
3078 case DRM_FORMAT_AYUV
:
3079 case DRM_FORMAT_NV12
:
3080 case DRM_FORMAT_NV21
:
3081 case DRM_FORMAT_NV16
:
3082 case DRM_FORMAT_NV61
:
3083 case DRM_FORMAT_NV24
:
3084 case DRM_FORMAT_NV42
:
3085 case DRM_FORMAT_YUV410
:
3086 case DRM_FORMAT_YVU410
:
3087 case DRM_FORMAT_YUV411
:
3088 case DRM_FORMAT_YVU411
:
3089 case DRM_FORMAT_YUV420
:
3090 case DRM_FORMAT_YVU420
:
3091 case DRM_FORMAT_YUV422
:
3092 case DRM_FORMAT_YVU422
:
3093 case DRM_FORMAT_YUV444
:
3094 case DRM_FORMAT_YVU444
:
3097 DRM_DEBUG_KMS("invalid pixel format %s\n",
3098 drm_get_format_name(r
->pixel_format
));
3103 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3105 int ret
, hsub
, vsub
, num_planes
, i
;
3107 ret
= format_check(r
);
3109 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3110 drm_get_format_name(r
->pixel_format
));
3114 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3115 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3116 num_planes
= drm_format_num_planes(r
->pixel_format
);
3118 if (r
->width
== 0 || r
->width
% hsub
) {
3119 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3123 if (r
->height
== 0 || r
->height
% vsub
) {
3124 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3128 for (i
= 0; i
< num_planes
; i
++) {
3129 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3130 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3131 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3133 if (!r
->handles
[i
]) {
3134 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3138 if ((uint64_t) width
* cpp
> UINT_MAX
)
3141 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3144 if (r
->pitches
[i
] < width
* cpp
) {
3145 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3149 if (r
->modifier
[i
] && !(r
->flags
& DRM_MODE_FB_MODIFIERS
)) {
3150 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3155 /* modifier specific checks: */
3156 switch (r
->modifier
[i
]) {
3157 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE
:
3158 /* NOTE: the pitch restriction may be lifted later if it turns
3159 * out that no hw has this restriction:
3161 if (r
->pixel_format
!= DRM_FORMAT_NV12
||
3162 width
% 128 || height
% 32 ||
3163 r
->pitches
[i
] % 128) {
3164 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i
);
3174 for (i
= num_planes
; i
< 4; i
++) {
3175 if (r
->modifier
[i
]) {
3176 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i
);
3180 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3181 if (!(r
->flags
& DRM_MODE_FB_MODIFIERS
))
3184 if (r
->handles
[i
]) {
3185 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i
);
3189 if (r
->pitches
[i
]) {
3190 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i
);
3194 if (r
->offsets
[i
]) {
3195 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i
);
3203 static struct drm_framebuffer
*
3204 internal_framebuffer_create(struct drm_device
*dev
,
3205 struct drm_mode_fb_cmd2
*r
,
3206 struct drm_file
*file_priv
)
3208 struct drm_mode_config
*config
= &dev
->mode_config
;
3209 struct drm_framebuffer
*fb
;
3212 if (r
->flags
& ~(DRM_MODE_FB_INTERLACED
| DRM_MODE_FB_MODIFIERS
)) {
3213 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3214 return ERR_PTR(-EINVAL
);
3217 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3218 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3219 r
->width
, config
->min_width
, config
->max_width
);
3220 return ERR_PTR(-EINVAL
);
3222 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3223 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3224 r
->height
, config
->min_height
, config
->max_height
);
3225 return ERR_PTR(-EINVAL
);
3228 if (r
->flags
& DRM_MODE_FB_MODIFIERS
&&
3229 !dev
->mode_config
.allow_fb_modifiers
) {
3230 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3231 return ERR_PTR(-EINVAL
);
3234 ret
= framebuffer_check(r
);
3236 return ERR_PTR(ret
);
3238 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3240 DRM_DEBUG_KMS("could not create framebuffer\n");
3248 * drm_mode_addfb2 - add an FB to the graphics configuration
3249 * @dev: drm device for the ioctl
3250 * @data: data pointer for the ioctl
3251 * @file_priv: drm file for the ioctl call
3253 * Add a new FB to the specified CRTC, given a user request with format. This is
3254 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3255 * and uses fourcc codes as pixel format specifiers.
3257 * Called by the user via ioctl.
3260 * Zero on success, negative errno on failure.
3262 int drm_mode_addfb2(struct drm_device
*dev
,
3263 void *data
, struct drm_file
*file_priv
)
3265 struct drm_mode_fb_cmd2
*r
= data
;
3266 struct drm_framebuffer
*fb
;
3268 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3271 fb
= internal_framebuffer_create(dev
, r
, file_priv
);
3275 /* Transfer ownership to the filp for reaping on close */
3277 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3278 mutex_lock(&file_priv
->fbs_lock
);
3279 r
->fb_id
= fb
->base
.id
;
3280 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3281 mutex_unlock(&file_priv
->fbs_lock
);
3287 * drm_mode_rmfb - remove an FB from the configuration
3288 * @dev: drm device for the ioctl
3289 * @data: data pointer for the ioctl
3290 * @file_priv: drm file for the ioctl call
3292 * Remove the FB specified by the user.
3294 * Called by the user via ioctl.
3297 * Zero on success, negative errno on failure.
3299 int drm_mode_rmfb(struct drm_device
*dev
,
3300 void *data
, struct drm_file
*file_priv
)
3302 struct drm_framebuffer
*fb
= NULL
;
3303 struct drm_framebuffer
*fbl
= NULL
;
3304 uint32_t *id
= data
;
3307 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3310 mutex_lock(&file_priv
->fbs_lock
);
3311 mutex_lock(&dev
->mode_config
.fb_lock
);
3312 fb
= __drm_framebuffer_lookup(dev
, *id
);
3316 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3322 list_del_init(&fb
->filp_head
);
3323 mutex_unlock(&dev
->mode_config
.fb_lock
);
3324 mutex_unlock(&file_priv
->fbs_lock
);
3326 drm_framebuffer_unreference(fb
);
3331 mutex_unlock(&dev
->mode_config
.fb_lock
);
3332 mutex_unlock(&file_priv
->fbs_lock
);
3338 * drm_mode_getfb - get FB info
3339 * @dev: drm device for the ioctl
3340 * @data: data pointer for the ioctl
3341 * @file_priv: drm file for the ioctl call
3343 * Lookup the FB given its ID and return info about it.
3345 * Called by the user via ioctl.
3348 * Zero on success, negative errno on failure.
3350 int drm_mode_getfb(struct drm_device
*dev
,
3351 void *data
, struct drm_file
*file_priv
)
3353 struct drm_mode_fb_cmd
*r
= data
;
3354 struct drm_framebuffer
*fb
;
3357 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3360 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3364 r
->height
= fb
->height
;
3365 r
->width
= fb
->width
;
3366 r
->depth
= fb
->depth
;
3367 r
->bpp
= fb
->bits_per_pixel
;
3368 r
->pitch
= fb
->pitches
[0];
3369 if (fb
->funcs
->create_handle
) {
3370 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3371 drm_is_control_client(file_priv
)) {
3372 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3375 /* GET_FB() is an unprivileged ioctl so we must not
3376 * return a buffer-handle to non-master processes! For
3377 * backwards-compatibility reasons, we cannot make
3378 * GET_FB() privileged, so just return an invalid handle
3379 * for non-masters. */
3387 drm_framebuffer_unreference(fb
);
3393 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3394 * @dev: drm device for the ioctl
3395 * @data: data pointer for the ioctl
3396 * @file_priv: drm file for the ioctl call
3398 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3399 * rectangle list. Generic userspace which does frontbuffer rendering must call
3400 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3401 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3403 * Modesetting drivers which always update the frontbuffer do not need to
3404 * implement the corresponding ->dirty framebuffer callback.
3406 * Called by the user via ioctl.
3409 * Zero on success, negative errno on failure.
3411 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3412 void *data
, struct drm_file
*file_priv
)
3414 struct drm_clip_rect __user
*clips_ptr
;
3415 struct drm_clip_rect
*clips
= NULL
;
3416 struct drm_mode_fb_dirty_cmd
*r
= data
;
3417 struct drm_framebuffer
*fb
;
3422 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3425 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3429 num_clips
= r
->num_clips
;
3430 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3432 if (!num_clips
!= !clips_ptr
) {
3437 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3439 /* If userspace annotates copy, clips must come in pairs */
3440 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3445 if (num_clips
&& clips_ptr
) {
3446 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3450 clips
= kcalloc(num_clips
, sizeof(*clips
), GFP_KERNEL
);
3456 ret
= copy_from_user(clips
, clips_ptr
,
3457 num_clips
* sizeof(*clips
));
3464 if (fb
->funcs
->dirty
) {
3465 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3474 drm_framebuffer_unreference(fb
);
3481 * drm_fb_release - remove and free the FBs on this file
3482 * @priv: drm file for the ioctl
3484 * Destroy all the FBs associated with @filp.
3486 * Called by the user via ioctl.
3489 * Zero on success, negative errno on failure.
3491 void drm_fb_release(struct drm_file
*priv
)
3493 struct drm_framebuffer
*fb
, *tfb
;
3496 * When the file gets released that means no one else can access the fb
3497 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3498 * avoid upsetting lockdep since the universal cursor code adds a
3499 * framebuffer while holding mutex locks.
3501 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3502 * locks is impossible here since no one else but this function can get
3505 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3506 list_del_init(&fb
->filp_head
);
3508 /* This drops the fpriv->fbs reference. */
3509 drm_framebuffer_unreference(fb
);
3514 * drm_property_create - create a new property type
3516 * @flags: flags specifying the property type
3517 * @name: name of the property
3518 * @num_values: number of pre-defined values
3520 * This creates a new generic drm property which can then be attached to a drm
3521 * object with drm_object_attach_property. The returned property object must be
3522 * freed with drm_property_destroy.
3524 * Note that the DRM core keeps a per-device list of properties and that, if
3525 * drm_mode_config_cleanup() is called, it will destroy all properties created
3529 * A pointer to the newly created property on success, NULL on failure.
3531 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3532 const char *name
, int num_values
)
3534 struct drm_property
*property
= NULL
;
3537 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3541 property
->dev
= dev
;
3544 property
->values
= kcalloc(num_values
, sizeof(uint64_t),
3546 if (!property
->values
)
3550 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3554 property
->flags
= flags
;
3555 property
->num_values
= num_values
;
3556 INIT_LIST_HEAD(&property
->enum_list
);
3559 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3560 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3563 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3565 WARN_ON(!drm_property_type_valid(property
));
3569 kfree(property
->values
);
3573 EXPORT_SYMBOL(drm_property_create
);
3576 * drm_property_create_enum - create a new enumeration property type
3578 * @flags: flags specifying the property type
3579 * @name: name of the property
3580 * @props: enumeration lists with property values
3581 * @num_values: number of pre-defined values
3583 * This creates a new generic drm property which can then be attached to a drm
3584 * object with drm_object_attach_property. The returned property object must be
3585 * freed with drm_property_destroy.
3587 * Userspace is only allowed to set one of the predefined values for enumeration
3591 * A pointer to the newly created property on success, NULL on failure.
3593 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3595 const struct drm_prop_enum_list
*props
,
3598 struct drm_property
*property
;
3601 flags
|= DRM_MODE_PROP_ENUM
;
3603 property
= drm_property_create(dev
, flags
, name
, num_values
);
3607 for (i
= 0; i
< num_values
; i
++) {
3608 ret
= drm_property_add_enum(property
, i
,
3612 drm_property_destroy(dev
, property
);
3619 EXPORT_SYMBOL(drm_property_create_enum
);
3622 * drm_property_create_bitmask - create a new bitmask property type
3624 * @flags: flags specifying the property type
3625 * @name: name of the property
3626 * @props: enumeration lists with property bitflags
3627 * @num_props: size of the @props array
3628 * @supported_bits: bitmask of all supported enumeration values
3630 * This creates a new bitmask drm property which can then be attached to a drm
3631 * object with drm_object_attach_property. The returned property object must be
3632 * freed with drm_property_destroy.
3634 * Compared to plain enumeration properties userspace is allowed to set any
3635 * or'ed together combination of the predefined property bitflag values
3638 * A pointer to the newly created property on success, NULL on failure.
3640 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3641 int flags
, const char *name
,
3642 const struct drm_prop_enum_list
*props
,
3644 uint64_t supported_bits
)
3646 struct drm_property
*property
;
3647 int i
, ret
, index
= 0;
3648 int num_values
= hweight64(supported_bits
);
3650 flags
|= DRM_MODE_PROP_BITMASK
;
3652 property
= drm_property_create(dev
, flags
, name
, num_values
);
3655 for (i
= 0; i
< num_props
; i
++) {
3656 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3659 if (WARN_ON(index
>= num_values
)) {
3660 drm_property_destroy(dev
, property
);
3664 ret
= drm_property_add_enum(property
, index
++,
3668 drm_property_destroy(dev
, property
);
3675 EXPORT_SYMBOL(drm_property_create_bitmask
);
3677 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3678 int flags
, const char *name
,
3679 uint64_t min
, uint64_t max
)
3681 struct drm_property
*property
;
3683 property
= drm_property_create(dev
, flags
, name
, 2);
3687 property
->values
[0] = min
;
3688 property
->values
[1] = max
;
3694 * drm_property_create_range - create a new unsigned ranged property type
3696 * @flags: flags specifying the property type
3697 * @name: name of the property
3698 * @min: minimum value of the property
3699 * @max: maximum value of the property
3701 * This creates a new generic drm property which can then be attached to a drm
3702 * object with drm_object_attach_property. The returned property object must be
3703 * freed with drm_property_destroy.
3705 * Userspace is allowed to set any unsigned integer value in the (min, max)
3709 * A pointer to the newly created property on success, NULL on failure.
3711 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3713 uint64_t min
, uint64_t max
)
3715 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3718 EXPORT_SYMBOL(drm_property_create_range
);
3721 * drm_property_create_signed_range - create a new signed ranged property type
3723 * @flags: flags specifying the property type
3724 * @name: name of the property
3725 * @min: minimum value of the property
3726 * @max: maximum value of the property
3728 * This creates a new generic drm property which can then be attached to a drm
3729 * object with drm_object_attach_property. The returned property object must be
3730 * freed with drm_property_destroy.
3732 * Userspace is allowed to set any signed integer value in the (min, max)
3736 * A pointer to the newly created property on success, NULL on failure.
3738 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3739 int flags
, const char *name
,
3740 int64_t min
, int64_t max
)
3742 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3743 name
, I642U64(min
), I642U64(max
));
3745 EXPORT_SYMBOL(drm_property_create_signed_range
);
3748 * drm_property_create_object - create a new object property type
3750 * @flags: flags specifying the property type
3751 * @name: name of the property
3752 * @type: object type from DRM_MODE_OBJECT_* defines
3754 * This creates a new generic drm property which can then be attached to a drm
3755 * object with drm_object_attach_property. The returned property object must be
3756 * freed with drm_property_destroy.
3758 * Userspace is only allowed to set this to any property value of the given
3759 * @type. Only useful for atomic properties, which is enforced.
3762 * A pointer to the newly created property on success, NULL on failure.
3764 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3765 int flags
, const char *name
, uint32_t type
)
3767 struct drm_property
*property
;
3769 flags
|= DRM_MODE_PROP_OBJECT
;
3771 if (WARN_ON(!(flags
& DRM_MODE_PROP_ATOMIC
)))
3774 property
= drm_property_create(dev
, flags
, name
, 1);
3778 property
->values
[0] = type
;
3782 EXPORT_SYMBOL(drm_property_create_object
);
3785 * drm_property_create_bool - create a new boolean property type
3787 * @flags: flags specifying the property type
3788 * @name: name of the property
3790 * This creates a new generic drm property which can then be attached to a drm
3791 * object with drm_object_attach_property. The returned property object must be
3792 * freed with drm_property_destroy.
3794 * This is implemented as a ranged property with only {0, 1} as valid values.
3797 * A pointer to the newly created property on success, NULL on failure.
3799 struct drm_property
*drm_property_create_bool(struct drm_device
*dev
, int flags
,
3802 return drm_property_create_range(dev
, flags
, name
, 0, 1);
3804 EXPORT_SYMBOL(drm_property_create_bool
);
3807 * drm_property_add_enum - add a possible value to an enumeration property
3808 * @property: enumeration property to change
3809 * @index: index of the new enumeration
3810 * @value: value of the new enumeration
3811 * @name: symbolic name of the new enumeration
3813 * This functions adds enumerations to a property.
3815 * It's use is deprecated, drivers should use one of the more specific helpers
3816 * to directly create the property with all enumerations already attached.
3819 * Zero on success, error code on failure.
3821 int drm_property_add_enum(struct drm_property
*property
, int index
,
3822 uint64_t value
, const char *name
)
3824 struct drm_property_enum
*prop_enum
;
3826 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3827 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3831 * Bitmask enum properties have the additional constraint of values
3834 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3838 if (!list_empty(&property
->enum_list
)) {
3839 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3840 if (prop_enum
->value
== value
) {
3841 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3842 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3848 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3852 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3853 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3854 prop_enum
->value
= value
;
3856 property
->values
[index
] = value
;
3857 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
3860 EXPORT_SYMBOL(drm_property_add_enum
);
3863 * drm_property_destroy - destroy a drm property
3865 * @property: property to destry
3867 * This function frees a property including any attached resources like
3868 * enumeration values.
3870 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3872 struct drm_property_enum
*prop_enum
, *pt
;
3874 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
3875 list_del(&prop_enum
->head
);
3879 if (property
->num_values
)
3880 kfree(property
->values
);
3881 drm_mode_object_put(dev
, &property
->base
);
3882 list_del(&property
->head
);
3885 EXPORT_SYMBOL(drm_property_destroy
);
3888 * drm_object_attach_property - attach a property to a modeset object
3889 * @obj: drm modeset object
3890 * @property: property to attach
3891 * @init_val: initial value of the property
3893 * This attaches the given property to the modeset object with the given initial
3894 * value. Currently this function cannot fail since the properties are stored in
3895 * a statically sized array.
3897 void drm_object_attach_property(struct drm_mode_object
*obj
,
3898 struct drm_property
*property
,
3901 int count
= obj
->properties
->count
;
3903 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3904 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3905 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3906 "you see this message on the same object type.\n",
3911 obj
->properties
->properties
[count
] = property
;
3912 obj
->properties
->values
[count
] = init_val
;
3913 obj
->properties
->count
++;
3914 if (property
->flags
& DRM_MODE_PROP_ATOMIC
)
3915 obj
->properties
->atomic_count
++;
3917 EXPORT_SYMBOL(drm_object_attach_property
);
3920 * drm_object_property_set_value - set the value of a property
3921 * @obj: drm mode object to set property value for
3922 * @property: property to set
3923 * @val: value the property should be set to
3925 * This functions sets a given property on a given object. This function only
3926 * changes the software state of the property, it does not call into the
3927 * driver's ->set_property callback.
3930 * Zero on success, error code on failure.
3932 int drm_object_property_set_value(struct drm_mode_object
*obj
,
3933 struct drm_property
*property
, uint64_t val
)
3937 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3938 if (obj
->properties
->properties
[i
] == property
) {
3939 obj
->properties
->values
[i
] = val
;
3946 EXPORT_SYMBOL(drm_object_property_set_value
);
3949 * drm_object_property_get_value - retrieve the value of a property
3950 * @obj: drm mode object to get property value from
3951 * @property: property to retrieve
3952 * @val: storage for the property value
3954 * This function retrieves the softare state of the given property for the given
3955 * property. Since there is no driver callback to retrieve the current property
3956 * value this might be out of sync with the hardware, depending upon the driver
3960 * Zero on success, error code on failure.
3962 int drm_object_property_get_value(struct drm_mode_object
*obj
,
3963 struct drm_property
*property
, uint64_t *val
)
3967 /* read-only properties bypass atomic mechanism and still store
3968 * their value in obj->properties->values[].. mostly to avoid
3969 * having to deal w/ EDID and similar props in atomic paths:
3971 if (drm_core_check_feature(property
->dev
, DRIVER_ATOMIC
) &&
3972 !(property
->flags
& DRM_MODE_PROP_IMMUTABLE
))
3973 return drm_atomic_get_property(obj
, property
, val
);
3975 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3976 if (obj
->properties
->properties
[i
] == property
) {
3977 *val
= obj
->properties
->values
[i
];
3984 EXPORT_SYMBOL(drm_object_property_get_value
);
3987 * drm_mode_getproperty_ioctl - get the property metadata
3990 * @file_priv: DRM file info
3992 * This function retrieves the metadata for a given property, like the different
3993 * possible values for an enum property or the limits for a range property.
3995 * Blob properties are special
3997 * Called by the user via ioctl.
4000 * Zero on success, negative errno on failure.
4002 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
4003 void *data
, struct drm_file
*file_priv
)
4005 struct drm_mode_get_property
*out_resp
= data
;
4006 struct drm_property
*property
;
4008 int value_count
= 0;
4011 struct drm_property_enum
*prop_enum
;
4012 struct drm_mode_property_enum __user
*enum_ptr
;
4013 uint64_t __user
*values_ptr
;
4015 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4018 drm_modeset_lock_all(dev
);
4019 property
= drm_property_find(dev
, out_resp
->prop_id
);
4025 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4026 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4027 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
4031 value_count
= property
->num_values
;
4033 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
4034 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
4035 out_resp
->flags
= property
->flags
;
4037 if ((out_resp
->count_values
>= value_count
) && value_count
) {
4038 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
4039 for (i
= 0; i
< value_count
; i
++) {
4040 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
4046 out_resp
->count_values
= value_count
;
4048 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4049 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4050 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
4052 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
4053 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
4055 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
4060 if (copy_to_user(&enum_ptr
[copied
].name
,
4061 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
4068 out_resp
->count_enum_blobs
= enum_count
;
4072 * NOTE: The idea seems to have been to use this to read all the blob
4073 * property values. But nothing ever added them to the corresponding
4074 * list, userspace always used the special-purpose get_blob ioctl to
4075 * read the value for a blob property. It also doesn't make a lot of
4076 * sense to return values here when everything else is just metadata for
4077 * the property itself.
4079 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4080 out_resp
->count_enum_blobs
= 0;
4082 drm_modeset_unlock_all(dev
);
4087 * drm_property_create_blob - Create new blob property
4089 * Creates a new blob property for a specified DRM device, optionally
4092 * @dev: DRM device to create property for
4093 * @length: Length to allocate for blob data
4094 * @data: If specified, copies data into blob
4097 * New blob property with a single reference on success, or an ERR_PTR
4100 struct drm_property_blob
*
4101 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
4104 struct drm_property_blob
*blob
;
4108 return ERR_PTR(-EINVAL
);
4110 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
4112 return ERR_PTR(-ENOMEM
);
4114 /* This must be explicitly initialised, so we can safely call list_del
4115 * on it in the removal handler, even if it isn't in a file list. */
4116 INIT_LIST_HEAD(&blob
->head_file
);
4117 blob
->length
= length
;
4121 memcpy(blob
->data
, data
, length
);
4123 mutex_lock(&dev
->mode_config
.blob_lock
);
4125 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
4128 mutex_unlock(&dev
->mode_config
.blob_lock
);
4129 return ERR_PTR(-EINVAL
);
4132 kref_init(&blob
->refcount
);
4134 list_add_tail(&blob
->head_global
,
4135 &dev
->mode_config
.property_blob_list
);
4137 mutex_unlock(&dev
->mode_config
.blob_lock
);
4141 EXPORT_SYMBOL(drm_property_create_blob
);
4144 * drm_property_free_blob - Blob property destructor
4146 * Internal free function for blob properties; must not be used directly.
4150 static void drm_property_free_blob(struct kref
*kref
)
4152 struct drm_property_blob
*blob
=
4153 container_of(kref
, struct drm_property_blob
, refcount
);
4155 WARN_ON(!mutex_is_locked(&blob
->dev
->mode_config
.blob_lock
));
4157 list_del(&blob
->head_global
);
4158 list_del(&blob
->head_file
);
4159 drm_mode_object_put(blob
->dev
, &blob
->base
);
4165 * drm_property_unreference_blob - Unreference a blob property
4167 * Drop a reference on a blob property. May free the object.
4169 * @blob: Pointer to blob property
4171 void drm_property_unreference_blob(struct drm_property_blob
*blob
)
4173 struct drm_device
*dev
;
4180 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4182 if (kref_put_mutex(&blob
->refcount
, drm_property_free_blob
,
4183 &dev
->mode_config
.blob_lock
))
4184 mutex_unlock(&dev
->mode_config
.blob_lock
);
4186 might_lock(&dev
->mode_config
.blob_lock
);
4188 EXPORT_SYMBOL(drm_property_unreference_blob
);
4191 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4193 * Drop a reference on a blob property. May free the object. This must be
4194 * called with blob_lock held.
4196 * @blob: Pointer to blob property
4198 static void drm_property_unreference_blob_locked(struct drm_property_blob
*blob
)
4203 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4205 kref_put(&blob
->refcount
, drm_property_free_blob
);
4209 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4211 * @file_priv: destroy all blobs owned by this file handle
4213 void drm_property_destroy_user_blobs(struct drm_device
*dev
,
4214 struct drm_file
*file_priv
)
4216 struct drm_property_blob
*blob
, *bt
;
4218 mutex_lock(&dev
->mode_config
.blob_lock
);
4220 list_for_each_entry_safe(blob
, bt
, &file_priv
->blobs
, head_file
) {
4221 list_del_init(&blob
->head_file
);
4222 drm_property_unreference_blob_locked(blob
);
4225 mutex_unlock(&dev
->mode_config
.blob_lock
);
4229 * drm_property_reference_blob - Take a reference on an existing property
4231 * Take a new reference on an existing blob property.
4233 * @blob: Pointer to blob property
4235 struct drm_property_blob
*drm_property_reference_blob(struct drm_property_blob
*blob
)
4237 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob
, blob
->base
.id
, atomic_read(&blob
->refcount
.refcount
));
4238 kref_get(&blob
->refcount
);
4241 EXPORT_SYMBOL(drm_property_reference_blob
);
4244 * Like drm_property_lookup_blob, but does not return an additional reference.
4245 * Must be called with blob_lock held.
4247 static struct drm_property_blob
*__drm_property_lookup_blob(struct drm_device
*dev
,
4250 struct drm_mode_object
*obj
= NULL
;
4251 struct drm_property_blob
*blob
;
4253 WARN_ON(!mutex_is_locked(&dev
->mode_config
.blob_lock
));
4255 mutex_lock(&dev
->mode_config
.idr_mutex
);
4256 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
4257 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_BLOB
) || (obj
->id
!= id
))
4260 blob
= obj_to_blob(obj
);
4261 mutex_unlock(&dev
->mode_config
.idr_mutex
);
4267 * drm_property_lookup_blob - look up a blob property and take a reference
4269 * @id: id of the blob property
4271 * If successful, this takes an additional reference to the blob property.
4272 * callers need to make sure to eventually unreference the returned property
4273 * again, using @drm_property_unreference_blob.
4275 struct drm_property_blob
*drm_property_lookup_blob(struct drm_device
*dev
,
4278 struct drm_property_blob
*blob
;
4280 mutex_lock(&dev
->mode_config
.blob_lock
);
4281 blob
= __drm_property_lookup_blob(dev
, id
);
4283 if (!kref_get_unless_zero(&blob
->refcount
))
4286 mutex_unlock(&dev
->mode_config
.blob_lock
);
4290 EXPORT_SYMBOL(drm_property_lookup_blob
);
4293 * drm_property_replace_global_blob - atomically replace existing blob property
4295 * @replace: location of blob property pointer to be replaced
4296 * @length: length of data for new blob, or 0 for no data
4297 * @data: content for new blob, or NULL for no data
4298 * @obj_holds_id: optional object for property holding blob ID
4299 * @prop_holds_id: optional property holding blob ID
4300 * @return 0 on success or error on failure
4302 * This function will atomically replace a global property in the blob list,
4303 * optionally updating a property which holds the ID of that property. It is
4304 * guaranteed to be atomic: no caller will be allowed to see intermediate
4305 * results, and either the entire operation will succeed and clean up the
4306 * previous property, or it will fail and the state will be unchanged.
4308 * If length is 0 or data is NULL, no new blob will be created, and the holding
4309 * property, if specified, will be set to 0.
4311 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4312 * by holding the relevant modesetting object lock for its parent.
4314 * For example, a drm_connector has a 'PATH' property, which contains the ID
4315 * of a blob property with the value of the MST path information. Calling this
4316 * function with replace pointing to the connector's path_blob_ptr, length and
4317 * data set for the new path information, obj_holds_id set to the connector's
4318 * base object, and prop_holds_id set to the path property name, will perform
4319 * a completely atomic update. The access to path_blob_ptr is protected by the
4320 * caller holding a lock on the connector.
4322 static int drm_property_replace_global_blob(struct drm_device
*dev
,
4323 struct drm_property_blob
**replace
,
4326 struct drm_mode_object
*obj_holds_id
,
4327 struct drm_property
*prop_holds_id
)
4329 struct drm_property_blob
*new_blob
= NULL
;
4330 struct drm_property_blob
*old_blob
= NULL
;
4333 WARN_ON(replace
== NULL
);
4335 old_blob
= *replace
;
4337 if (length
&& data
) {
4338 new_blob
= drm_property_create_blob(dev
, length
, data
);
4339 if (IS_ERR(new_blob
))
4340 return PTR_ERR(new_blob
);
4343 /* This does not need to be synchronised with blob_lock, as the
4344 * get_properties ioctl locks all modesetting objects, and
4345 * obj_holds_id must be locked before calling here, so we cannot
4346 * have its value out of sync with the list membership modified
4347 * below under blob_lock. */
4349 ret
= drm_object_property_set_value(obj_holds_id
,
4352 new_blob
->base
.id
: 0);
4357 drm_property_unreference_blob(old_blob
);
4358 *replace
= new_blob
;
4363 drm_property_unreference_blob(new_blob
);
4368 * drm_mode_getblob_ioctl - get the contents of a blob property value
4371 * @file_priv: DRM file info
4373 * This function retrieves the contents of a blob property. The value stored in
4374 * an object's blob property is just a normal modeset object id.
4376 * Called by the user via ioctl.
4379 * Zero on success, negative errno on failure.
4381 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
4382 void *data
, struct drm_file
*file_priv
)
4384 struct drm_mode_get_blob
*out_resp
= data
;
4385 struct drm_property_blob
*blob
;
4387 void __user
*blob_ptr
;
4389 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4392 drm_modeset_lock_all(dev
);
4393 mutex_lock(&dev
->mode_config
.blob_lock
);
4394 blob
= __drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4400 if (out_resp
->length
== blob
->length
) {
4401 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4402 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)) {
4407 out_resp
->length
= blob
->length
;
4410 mutex_unlock(&dev
->mode_config
.blob_lock
);
4411 drm_modeset_unlock_all(dev
);
4416 * drm_mode_createblob_ioctl - create a new blob property
4419 * @file_priv: DRM file info
4421 * This function creates a new blob property with user-defined values. In order
4422 * to give us sensible validation and checking when creating, rather than at
4423 * every potential use, we also require a type to be provided upfront.
4425 * Called by the user via ioctl.
4428 * Zero on success, negative errno on failure.
4430 int drm_mode_createblob_ioctl(struct drm_device
*dev
,
4431 void *data
, struct drm_file
*file_priv
)
4433 struct drm_mode_create_blob
*out_resp
= data
;
4434 struct drm_property_blob
*blob
;
4435 void __user
*blob_ptr
;
4438 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4441 blob
= drm_property_create_blob(dev
, out_resp
->length
, NULL
);
4443 return PTR_ERR(blob
);
4445 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4446 if (copy_from_user(blob
->data
, blob_ptr
, out_resp
->length
)) {
4451 /* Dropping the lock between create_blob and our access here is safe
4452 * as only the same file_priv can remove the blob; at this point, it is
4453 * not associated with any file_priv. */
4454 mutex_lock(&dev
->mode_config
.blob_lock
);
4455 out_resp
->blob_id
= blob
->base
.id
;
4456 list_add_tail(&file_priv
->blobs
, &blob
->head_file
);
4457 mutex_unlock(&dev
->mode_config
.blob_lock
);
4462 drm_property_unreference_blob(blob
);
4467 * drm_mode_destroyblob_ioctl - destroy a user blob property
4470 * @file_priv: DRM file info
4472 * Destroy an existing user-defined blob property.
4474 * Called by the user via ioctl.
4477 * Zero on success, negative errno on failure.
4479 int drm_mode_destroyblob_ioctl(struct drm_device
*dev
,
4480 void *data
, struct drm_file
*file_priv
)
4482 struct drm_mode_destroy_blob
*out_resp
= data
;
4483 struct drm_property_blob
*blob
= NULL
, *bt
;
4487 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4490 mutex_lock(&dev
->mode_config
.blob_lock
);
4491 blob
= __drm_property_lookup_blob(dev
, out_resp
->blob_id
);
4497 /* Ensure the property was actually created by this user. */
4498 list_for_each_entry(bt
, &file_priv
->blobs
, head_file
) {
4510 /* We must drop head_file here, because we may not be the last
4511 * reference on the blob. */
4512 list_del_init(&blob
->head_file
);
4513 drm_property_unreference_blob_locked(blob
);
4514 mutex_unlock(&dev
->mode_config
.blob_lock
);
4519 mutex_unlock(&dev
->mode_config
.blob_lock
);
4524 * drm_mode_connector_set_path_property - set tile property on connector
4525 * @connector: connector to set property on.
4526 * @path: path to use for property; must not be NULL.
4528 * This creates a property to expose to userspace to specify a
4529 * connector path. This is mainly used for DisplayPort MST where
4530 * connectors have a topology and we want to allow userspace to give
4531 * them more meaningful names.
4534 * Zero on success, negative errno on failure.
4536 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4539 struct drm_device
*dev
= connector
->dev
;
4542 ret
= drm_property_replace_global_blob(dev
,
4543 &connector
->path_blob_ptr
,
4547 dev
->mode_config
.path_property
);
4550 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4553 * drm_mode_connector_set_tile_property - set tile property on connector
4554 * @connector: connector to set property on.
4556 * This looks up the tile information for a connector, and creates a
4557 * property for userspace to parse if it exists. The property is of
4558 * the form of 8 integers using ':' as a separator.
4561 * Zero on success, errno on failure.
4563 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
)
4565 struct drm_device
*dev
= connector
->dev
;
4569 if (!connector
->has_tile
) {
4570 ret
= drm_property_replace_global_blob(dev
,
4571 &connector
->tile_blob_ptr
,
4575 dev
->mode_config
.tile_property
);
4579 snprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4580 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
4581 connector
->num_h_tile
, connector
->num_v_tile
,
4582 connector
->tile_h_loc
, connector
->tile_v_loc
,
4583 connector
->tile_h_size
, connector
->tile_v_size
);
4585 ret
= drm_property_replace_global_blob(dev
,
4586 &connector
->tile_blob_ptr
,
4590 dev
->mode_config
.tile_property
);
4593 EXPORT_SYMBOL(drm_mode_connector_set_tile_property
);
4596 * drm_mode_connector_update_edid_property - update the edid property of a connector
4597 * @connector: drm connector
4598 * @edid: new value of the edid property
4600 * This function creates a new blob modeset object and assigns its id to the
4601 * connector's edid property.
4604 * Zero on success, negative errno on failure.
4606 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4607 const struct edid
*edid
)
4609 struct drm_device
*dev
= connector
->dev
;
4613 /* ignore requests to set edid when overridden */
4614 if (connector
->override_edid
)
4618 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4620 ret
= drm_property_replace_global_blob(dev
,
4621 &connector
->edid_blob_ptr
,
4625 dev
->mode_config
.edid_property
);
4628 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4630 /* Some properties could refer to dynamic refcnt'd objects, or things that
4631 * need special locking to handle lifetime issues (ie. to ensure the prop
4632 * value doesn't become invalid part way through the property update due to
4633 * race). The value returned by reference via 'obj' should be passed back
4634 * to drm_property_change_valid_put() after the property is set (and the
4635 * object to which the property is attached has a chance to take it's own
4638 bool drm_property_change_valid_get(struct drm_property
*property
,
4639 uint64_t value
, struct drm_mode_object
**ref
)
4643 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4648 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4649 if (value
< property
->values
[0] || value
> property
->values
[1])
4652 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4653 int64_t svalue
= U642I64(value
);
4655 if (svalue
< U642I64(property
->values
[0]) ||
4656 svalue
> U642I64(property
->values
[1]))
4659 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4660 uint64_t valid_mask
= 0;
4662 for (i
= 0; i
< property
->num_values
; i
++)
4663 valid_mask
|= (1ULL << property
->values
[i
]);
4664 return !(value
& ~valid_mask
);
4665 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4666 struct drm_property_blob
*blob
;
4671 blob
= drm_property_lookup_blob(property
->dev
, value
);
4678 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4679 /* a zero value for an object property translates to null: */
4683 /* handle refcnt'd objects specially: */
4684 if (property
->values
[0] == DRM_MODE_OBJECT_FB
) {
4685 struct drm_framebuffer
*fb
;
4686 fb
= drm_framebuffer_lookup(property
->dev
, value
);
4694 return _object_find(property
->dev
, value
, property
->values
[0]) != NULL
;
4698 for (i
= 0; i
< property
->num_values
; i
++)
4699 if (property
->values
[i
] == value
)
4704 void drm_property_change_valid_put(struct drm_property
*property
,
4705 struct drm_mode_object
*ref
)
4710 if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4711 if (property
->values
[0] == DRM_MODE_OBJECT_FB
)
4712 drm_framebuffer_unreference(obj_to_fb(ref
));
4713 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4714 drm_property_unreference_blob(obj_to_blob(ref
));
4718 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4721 * @file_priv: DRM file info
4723 * This function sets the current value for a connectors's property. It also
4724 * calls into a driver's ->set_property callback to update the hardware state
4726 * Called by the user via ioctl.
4729 * Zero on success, negative errno on failure.
4731 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4732 void *data
, struct drm_file
*file_priv
)
4734 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4735 struct drm_mode_obj_set_property obj_set_prop
= {
4736 .value
= conn_set_prop
->value
,
4737 .prop_id
= conn_set_prop
->prop_id
,
4738 .obj_id
= conn_set_prop
->connector_id
,
4739 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4742 /* It does all the locking and checking we need */
4743 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4746 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4747 struct drm_property
*property
,
4751 struct drm_connector
*connector
= obj_to_connector(obj
);
4753 /* Do DPMS ourselves */
4754 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4756 if (connector
->funcs
->dpms
)
4757 ret
= (*connector
->funcs
->dpms
)(connector
, (int)value
);
4758 } else if (connector
->funcs
->set_property
)
4759 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4761 /* store the property value if successful */
4763 drm_object_property_set_value(&connector
->base
, property
, value
);
4767 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4768 struct drm_property
*property
,
4772 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4774 if (crtc
->funcs
->set_property
)
4775 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4777 drm_object_property_set_value(obj
, property
, value
);
4783 * drm_mode_plane_set_obj_prop - set the value of a property
4784 * @plane: drm plane object to set property value for
4785 * @property: property to set
4786 * @value: value the property should be set to
4788 * This functions sets a given property on a given plane object. This function
4789 * calls the driver's ->set_property callback and changes the software state of
4790 * the property if the callback succeeds.
4793 * Zero on success, error code on failure.
4795 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4796 struct drm_property
*property
,
4800 struct drm_mode_object
*obj
= &plane
->base
;
4802 if (plane
->funcs
->set_property
)
4803 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4805 drm_object_property_set_value(obj
, property
, value
);
4809 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4812 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4815 * @file_priv: DRM file info
4817 * This function retrieves the current value for an object's property. Compared
4818 * to the connector specific ioctl this one is extended to also work on crtc and
4821 * Called by the user via ioctl.
4824 * Zero on success, negative errno on failure.
4826 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4827 struct drm_file
*file_priv
)
4829 struct drm_mode_obj_get_properties
*arg
= data
;
4830 struct drm_mode_object
*obj
;
4833 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4836 drm_modeset_lock_all(dev
);
4838 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4843 if (!obj
->properties
) {
4848 ret
= get_properties(obj
, file_priv
->atomic
,
4849 (uint32_t __user
*)(unsigned long)(arg
->props_ptr
),
4850 (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
),
4854 drm_modeset_unlock_all(dev
);
4859 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4862 * @file_priv: DRM file info
4864 * This function sets the current value for an object's property. It also calls
4865 * into a driver's ->set_property callback to update the hardware state.
4866 * Compared to the connector specific ioctl this one is extended to also work on
4867 * crtc and plane objects.
4869 * Called by the user via ioctl.
4872 * Zero on success, negative errno on failure.
4874 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4875 struct drm_file
*file_priv
)
4877 struct drm_mode_obj_set_property
*arg
= data
;
4878 struct drm_mode_object
*arg_obj
;
4879 struct drm_mode_object
*prop_obj
;
4880 struct drm_property
*property
;
4881 int i
, ret
= -EINVAL
;
4882 struct drm_mode_object
*ref
;
4884 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4887 drm_modeset_lock_all(dev
);
4889 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4894 if (!arg_obj
->properties
)
4897 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4898 if (arg_obj
->properties
->properties
[i
]->base
.id
== arg
->prop_id
)
4901 if (i
== arg_obj
->properties
->count
)
4904 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
4905 DRM_MODE_OBJECT_PROPERTY
);
4910 property
= obj_to_property(prop_obj
);
4912 if (!drm_property_change_valid_get(property
, arg
->value
, &ref
))
4915 switch (arg_obj
->type
) {
4916 case DRM_MODE_OBJECT_CONNECTOR
:
4917 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
4920 case DRM_MODE_OBJECT_CRTC
:
4921 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
4923 case DRM_MODE_OBJECT_PLANE
:
4924 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
4925 property
, arg
->value
);
4929 drm_property_change_valid_put(property
, ref
);
4932 drm_modeset_unlock_all(dev
);
4937 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4938 * @connector: connector to attach
4939 * @encoder: encoder to attach @connector to
4941 * This function links up a connector to an encoder. Note that the routing
4942 * restrictions between encoders and crtcs are exposed to userspace through the
4943 * possible_clones and possible_crtcs bitmasks.
4946 * Zero on success, negative errno on failure.
4948 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
4949 struct drm_encoder
*encoder
)
4953 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
4954 if (connector
->encoder_ids
[i
] == 0) {
4955 connector
->encoder_ids
[i
] = encoder
->base
.id
;
4961 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
4964 * drm_mode_crtc_set_gamma_size - set the gamma table size
4965 * @crtc: CRTC to set the gamma table size for
4966 * @gamma_size: size of the gamma table
4968 * Drivers which support gamma tables should set this to the supported gamma
4969 * table size when initializing the CRTC. Currently the drm core only supports a
4970 * fixed gamma table size.
4973 * Zero on success, negative errno on failure.
4975 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
4978 crtc
->gamma_size
= gamma_size
;
4980 crtc
->gamma_store
= kcalloc(gamma_size
, sizeof(uint16_t) * 3,
4982 if (!crtc
->gamma_store
) {
4983 crtc
->gamma_size
= 0;
4989 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
4992 * drm_mode_gamma_set_ioctl - set the gamma table
4995 * @file_priv: DRM file info
4997 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4998 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5000 * Called by the user via ioctl.
5003 * Zero on success, negative errno on failure.
5005 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
5006 void *data
, struct drm_file
*file_priv
)
5008 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5009 struct drm_crtc
*crtc
;
5010 void *r_base
, *g_base
, *b_base
;
5014 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5017 drm_modeset_lock_all(dev
);
5018 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5024 if (crtc
->funcs
->gamma_set
== NULL
) {
5029 /* memcpy into gamma store */
5030 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5035 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5036 r_base
= crtc
->gamma_store
;
5037 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
5042 g_base
= r_base
+ size
;
5043 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
5048 b_base
= g_base
+ size
;
5049 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
5054 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
5057 drm_modeset_unlock_all(dev
);
5063 * drm_mode_gamma_get_ioctl - get the gamma table
5066 * @file_priv: DRM file info
5068 * Copy the current gamma table into the storage provided. This also provides
5069 * the gamma table size the driver expects, which can be used to size the
5070 * allocated storage.
5072 * Called by the user via ioctl.
5075 * Zero on success, negative errno on failure.
5077 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
5078 void *data
, struct drm_file
*file_priv
)
5080 struct drm_mode_crtc_lut
*crtc_lut
= data
;
5081 struct drm_crtc
*crtc
;
5082 void *r_base
, *g_base
, *b_base
;
5086 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
5089 drm_modeset_lock_all(dev
);
5090 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
5096 /* memcpy into gamma store */
5097 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
5102 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
5103 r_base
= crtc
->gamma_store
;
5104 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
5109 g_base
= r_base
+ size
;
5110 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
5115 b_base
= g_base
+ size
;
5116 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
5121 drm_modeset_unlock_all(dev
);
5126 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5129 * @file_priv: DRM file info
5131 * This schedules an asynchronous update on a given CRTC, called page flip.
5132 * Optionally a drm event is generated to signal the completion of the event.
5133 * Generic drivers cannot assume that a pageflip with changed framebuffer
5134 * properties (including driver specific metadata like tiling layout) will work,
5135 * but some drivers support e.g. pixel format changes through the pageflip
5138 * Called by the user via ioctl.
5141 * Zero on success, negative errno on failure.
5143 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
5144 void *data
, struct drm_file
*file_priv
)
5146 struct drm_mode_crtc_page_flip
*page_flip
= data
;
5147 struct drm_crtc
*crtc
;
5148 struct drm_framebuffer
*fb
= NULL
;
5149 struct drm_pending_vblank_event
*e
= NULL
;
5150 unsigned long flags
;
5153 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
5154 page_flip
->reserved
!= 0)
5157 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
5160 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
5164 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
5165 if (crtc
->primary
->fb
== NULL
) {
5166 /* The framebuffer is currently unbound, presumably
5167 * due to a hotplug event, that userspace has not
5174 if (crtc
->funcs
->page_flip
== NULL
)
5177 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
5183 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
5187 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
5188 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5193 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5195 spin_lock_irqsave(&dev
->event_lock
, flags
);
5196 if (file_priv
->event_space
< sizeof(e
->event
)) {
5197 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5200 file_priv
->event_space
-= sizeof(e
->event
);
5201 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5203 e
= kzalloc(sizeof(*e
), GFP_KERNEL
);
5205 spin_lock_irqsave(&dev
->event_lock
, flags
);
5206 file_priv
->event_space
+= sizeof(e
->event
);
5207 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5211 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
5212 e
->event
.base
.length
= sizeof(e
->event
);
5213 e
->event
.user_data
= page_flip
->user_data
;
5214 e
->base
.event
= &e
->event
.base
;
5215 e
->base
.file_priv
= file_priv
;
5217 (void (*) (struct drm_pending_event
*)) kfree
;
5220 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
5221 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
5223 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
5224 spin_lock_irqsave(&dev
->event_lock
, flags
);
5225 file_priv
->event_space
+= sizeof(e
->event
);
5226 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
5229 /* Keep the old fb, don't unref it. */
5230 crtc
->primary
->old_fb
= NULL
;
5232 crtc
->primary
->fb
= fb
;
5233 /* Unref only the old framebuffer. */
5239 drm_framebuffer_unreference(fb
);
5240 if (crtc
->primary
->old_fb
)
5241 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
5242 crtc
->primary
->old_fb
= NULL
;
5243 drm_modeset_unlock_crtc(crtc
);
5249 * drm_mode_config_reset - call ->reset callbacks
5252 * This functions calls all the crtc's, encoder's and connector's ->reset
5253 * callback. Drivers can use this in e.g. their driver load or resume code to
5254 * reset hardware and software state.
5256 void drm_mode_config_reset(struct drm_device
*dev
)
5258 struct drm_crtc
*crtc
;
5259 struct drm_plane
*plane
;
5260 struct drm_encoder
*encoder
;
5261 struct drm_connector
*connector
;
5263 drm_for_each_plane(plane
, dev
)
5264 if (plane
->funcs
->reset
)
5265 plane
->funcs
->reset(plane
);
5267 drm_for_each_crtc(crtc
, dev
)
5268 if (crtc
->funcs
->reset
)
5269 crtc
->funcs
->reset(crtc
);
5271 drm_for_each_encoder(encoder
, dev
)
5272 if (encoder
->funcs
->reset
)
5273 encoder
->funcs
->reset(encoder
);
5275 mutex_lock(&dev
->mode_config
.mutex
);
5276 drm_for_each_connector(connector
, dev
)
5277 if (connector
->funcs
->reset
)
5278 connector
->funcs
->reset(connector
);
5279 mutex_unlock(&dev
->mode_config
.mutex
);
5281 EXPORT_SYMBOL(drm_mode_config_reset
);
5284 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5287 * @file_priv: DRM file info
5289 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5290 * TTM or something else entirely) and returns the resulting buffer handle. This
5291 * handle can then be wrapped up into a framebuffer modeset object.
5293 * Note that userspace is not allowed to use such objects for render
5294 * acceleration - drivers must create their own private ioctls for such a use
5297 * Called by the user via ioctl.
5300 * Zero on success, negative errno on failure.
5302 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
5303 void *data
, struct drm_file
*file_priv
)
5305 struct drm_mode_create_dumb
*args
= data
;
5306 u32 cpp
, stride
, size
;
5308 if (!dev
->driver
->dumb_create
)
5310 if (!args
->width
|| !args
->height
|| !args
->bpp
)
5313 /* overflow checks for 32bit size calculations */
5314 /* NOTE: DIV_ROUND_UP() can overflow */
5315 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
5316 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
5318 stride
= cpp
* args
->width
;
5319 if (args
->height
> 0xffffffffU
/ stride
)
5322 /* test for wrap-around */
5323 size
= args
->height
* stride
;
5324 if (PAGE_ALIGN(size
) == 0)
5328 * handle, pitch and size are output parameters. Zero them out to
5329 * prevent drivers from accidentally using uninitialized data. Since
5330 * not all existing userspace is clearing these fields properly we
5331 * cannot reject IOCTL with garbage in them.
5337 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
5341 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5344 * @file_priv: DRM file info
5346 * Allocate an offset in the drm device node's address space to be able to
5347 * memory map a dumb buffer.
5349 * Called by the user via ioctl.
5352 * Zero on success, negative errno on failure.
5354 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
5355 void *data
, struct drm_file
*file_priv
)
5357 struct drm_mode_map_dumb
*args
= data
;
5359 /* call driver ioctl to get mmap offset */
5360 if (!dev
->driver
->dumb_map_offset
)
5363 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
5367 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5370 * @file_priv: DRM file info
5372 * This destroys the userspace handle for the given dumb backing storage buffer.
5373 * Since buffer objects must be reference counted in the kernel a buffer object
5374 * won't be immediately freed if a framebuffer modeset object still uses it.
5376 * Called by the user via ioctl.
5379 * Zero on success, negative errno on failure.
5381 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
5382 void *data
, struct drm_file
*file_priv
)
5384 struct drm_mode_destroy_dumb
*args
= data
;
5386 if (!dev
->driver
->dumb_destroy
)
5389 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
5393 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5394 * @format: pixel format (DRM_FORMAT_*)
5395 * @depth: storage for the depth value
5396 * @bpp: storage for the bpp value
5398 * This only supports RGB formats here for compat with code that doesn't use
5399 * pixel formats directly yet.
5401 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
5406 case DRM_FORMAT_RGB332
:
5407 case DRM_FORMAT_BGR233
:
5411 case DRM_FORMAT_XRGB1555
:
5412 case DRM_FORMAT_XBGR1555
:
5413 case DRM_FORMAT_RGBX5551
:
5414 case DRM_FORMAT_BGRX5551
:
5415 case DRM_FORMAT_ARGB1555
:
5416 case DRM_FORMAT_ABGR1555
:
5417 case DRM_FORMAT_RGBA5551
:
5418 case DRM_FORMAT_BGRA5551
:
5422 case DRM_FORMAT_RGB565
:
5423 case DRM_FORMAT_BGR565
:
5427 case DRM_FORMAT_RGB888
:
5428 case DRM_FORMAT_BGR888
:
5432 case DRM_FORMAT_XRGB8888
:
5433 case DRM_FORMAT_XBGR8888
:
5434 case DRM_FORMAT_RGBX8888
:
5435 case DRM_FORMAT_BGRX8888
:
5439 case DRM_FORMAT_XRGB2101010
:
5440 case DRM_FORMAT_XBGR2101010
:
5441 case DRM_FORMAT_RGBX1010102
:
5442 case DRM_FORMAT_BGRX1010102
:
5443 case DRM_FORMAT_ARGB2101010
:
5444 case DRM_FORMAT_ABGR2101010
:
5445 case DRM_FORMAT_RGBA1010102
:
5446 case DRM_FORMAT_BGRA1010102
:
5450 case DRM_FORMAT_ARGB8888
:
5451 case DRM_FORMAT_ABGR8888
:
5452 case DRM_FORMAT_RGBA8888
:
5453 case DRM_FORMAT_BGRA8888
:
5458 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5459 drm_get_format_name(format
));
5465 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
5468 * drm_format_num_planes - get the number of planes for format
5469 * @format: pixel format (DRM_FORMAT_*)
5472 * The number of planes used by the specified pixel format.
5474 int drm_format_num_planes(uint32_t format
)
5477 case DRM_FORMAT_YUV410
:
5478 case DRM_FORMAT_YVU410
:
5479 case DRM_FORMAT_YUV411
:
5480 case DRM_FORMAT_YVU411
:
5481 case DRM_FORMAT_YUV420
:
5482 case DRM_FORMAT_YVU420
:
5483 case DRM_FORMAT_YUV422
:
5484 case DRM_FORMAT_YVU422
:
5485 case DRM_FORMAT_YUV444
:
5486 case DRM_FORMAT_YVU444
:
5488 case DRM_FORMAT_NV12
:
5489 case DRM_FORMAT_NV21
:
5490 case DRM_FORMAT_NV16
:
5491 case DRM_FORMAT_NV61
:
5492 case DRM_FORMAT_NV24
:
5493 case DRM_FORMAT_NV42
:
5499 EXPORT_SYMBOL(drm_format_num_planes
);
5502 * drm_format_plane_cpp - determine the bytes per pixel value
5503 * @format: pixel format (DRM_FORMAT_*)
5504 * @plane: plane index
5507 * The bytes per pixel value for the specified plane.
5509 int drm_format_plane_cpp(uint32_t format
, int plane
)
5514 if (plane
>= drm_format_num_planes(format
))
5518 case DRM_FORMAT_YUYV
:
5519 case DRM_FORMAT_YVYU
:
5520 case DRM_FORMAT_UYVY
:
5521 case DRM_FORMAT_VYUY
:
5523 case DRM_FORMAT_NV12
:
5524 case DRM_FORMAT_NV21
:
5525 case DRM_FORMAT_NV16
:
5526 case DRM_FORMAT_NV61
:
5527 case DRM_FORMAT_NV24
:
5528 case DRM_FORMAT_NV42
:
5529 return plane
? 2 : 1;
5530 case DRM_FORMAT_YUV410
:
5531 case DRM_FORMAT_YVU410
:
5532 case DRM_FORMAT_YUV411
:
5533 case DRM_FORMAT_YVU411
:
5534 case DRM_FORMAT_YUV420
:
5535 case DRM_FORMAT_YVU420
:
5536 case DRM_FORMAT_YUV422
:
5537 case DRM_FORMAT_YVU422
:
5538 case DRM_FORMAT_YUV444
:
5539 case DRM_FORMAT_YVU444
:
5542 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
5546 EXPORT_SYMBOL(drm_format_plane_cpp
);
5549 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5550 * @format: pixel format (DRM_FORMAT_*)
5553 * The horizontal chroma subsampling factor for the
5554 * specified pixel format.
5556 int drm_format_horz_chroma_subsampling(uint32_t format
)
5559 case DRM_FORMAT_YUV411
:
5560 case DRM_FORMAT_YVU411
:
5561 case DRM_FORMAT_YUV410
:
5562 case DRM_FORMAT_YVU410
:
5564 case DRM_FORMAT_YUYV
:
5565 case DRM_FORMAT_YVYU
:
5566 case DRM_FORMAT_UYVY
:
5567 case DRM_FORMAT_VYUY
:
5568 case DRM_FORMAT_NV12
:
5569 case DRM_FORMAT_NV21
:
5570 case DRM_FORMAT_NV16
:
5571 case DRM_FORMAT_NV61
:
5572 case DRM_FORMAT_YUV422
:
5573 case DRM_FORMAT_YVU422
:
5574 case DRM_FORMAT_YUV420
:
5575 case DRM_FORMAT_YVU420
:
5581 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5584 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5585 * @format: pixel format (DRM_FORMAT_*)
5588 * The vertical chroma subsampling factor for the
5589 * specified pixel format.
5591 int drm_format_vert_chroma_subsampling(uint32_t format
)
5594 case DRM_FORMAT_YUV410
:
5595 case DRM_FORMAT_YVU410
:
5597 case DRM_FORMAT_YUV420
:
5598 case DRM_FORMAT_YVU420
:
5599 case DRM_FORMAT_NV12
:
5600 case DRM_FORMAT_NV21
:
5606 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5609 * drm_rotation_simplify() - Try to simplify the rotation
5610 * @rotation: Rotation to be simplified
5611 * @supported_rotations: Supported rotations
5613 * Attempt to simplify the rotation to a form that is supported.
5614 * Eg. if the hardware supports everything except DRM_REFLECT_X
5615 * one could call this function like this:
5617 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5618 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5619 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5621 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5622 * transforms the hardware supports, this function may not
5623 * be able to produce a supported transform, so the caller should
5624 * check the result afterwards.
5626 unsigned int drm_rotation_simplify(unsigned int rotation
,
5627 unsigned int supported_rotations
)
5629 if (rotation
& ~supported_rotations
) {
5630 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5631 rotation
= (rotation
& DRM_REFLECT_MASK
) |
5632 BIT((ffs(rotation
& DRM_ROTATE_MASK
) + 1) % 4);
5637 EXPORT_SYMBOL(drm_rotation_simplify
);
5640 * drm_mode_config_init - initialize DRM mode_configuration structure
5643 * Initialize @dev's mode_config structure, used for tracking the graphics
5644 * configuration of @dev.
5646 * Since this initializes the modeset locks, no locking is possible. Which is no
5647 * problem, since this should happen single threaded at init time. It is the
5648 * driver's problem to ensure this guarantee.
5651 void drm_mode_config_init(struct drm_device
*dev
)
5653 mutex_init(&dev
->mode_config
.mutex
);
5654 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5655 mutex_init(&dev
->mode_config
.idr_mutex
);
5656 mutex_init(&dev
->mode_config
.fb_lock
);
5657 mutex_init(&dev
->mode_config
.blob_lock
);
5658 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5659 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5660 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5661 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5662 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5663 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5664 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5665 idr_init(&dev
->mode_config
.crtc_idr
);
5666 idr_init(&dev
->mode_config
.tile_idr
);
5668 drm_modeset_lock_all(dev
);
5669 drm_mode_create_standard_properties(dev
);
5670 drm_modeset_unlock_all(dev
);
5672 /* Just to be sure */
5673 dev
->mode_config
.num_fb
= 0;
5674 dev
->mode_config
.num_connector
= 0;
5675 dev
->mode_config
.num_crtc
= 0;
5676 dev
->mode_config
.num_encoder
= 0;
5677 dev
->mode_config
.num_overlay_plane
= 0;
5678 dev
->mode_config
.num_total_plane
= 0;
5680 EXPORT_SYMBOL(drm_mode_config_init
);
5683 * drm_mode_config_cleanup - free up DRM mode_config info
5686 * Free up all the connectors and CRTCs associated with this DRM device, then
5687 * free up the framebuffers and associated buffer objects.
5689 * Note that since this /should/ happen single-threaded at driver/device
5690 * teardown time, no locking is required. It's the driver's job to ensure that
5691 * this guarantee actually holds true.
5693 * FIXME: cleanup any dangling user buffer objects too
5695 void drm_mode_config_cleanup(struct drm_device
*dev
)
5697 struct drm_connector
*connector
, *ot
;
5698 struct drm_crtc
*crtc
, *ct
;
5699 struct drm_encoder
*encoder
, *enct
;
5700 struct drm_framebuffer
*fb
, *fbt
;
5701 struct drm_property
*property
, *pt
;
5702 struct drm_property_blob
*blob
, *bt
;
5703 struct drm_plane
*plane
, *plt
;
5705 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5707 encoder
->funcs
->destroy(encoder
);
5710 list_for_each_entry_safe(connector
, ot
,
5711 &dev
->mode_config
.connector_list
, head
) {
5712 connector
->funcs
->destroy(connector
);
5715 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5717 drm_property_destroy(dev
, property
);
5720 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5722 drm_property_unreference_blob(blob
);
5726 * Single-threaded teardown context, so it's not required to grab the
5727 * fb_lock to protect against concurrent fb_list access. Contrary, it
5728 * would actually deadlock with the drm_framebuffer_cleanup function.
5730 * Also, if there are any framebuffers left, that's a driver leak now,
5731 * so politely WARN about this.
5733 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5734 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5735 drm_framebuffer_free(&fb
->refcount
);
5738 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5740 plane
->funcs
->destroy(plane
);
5743 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5744 crtc
->funcs
->destroy(crtc
);
5747 idr_destroy(&dev
->mode_config
.tile_idr
);
5748 idr_destroy(&dev
->mode_config
.crtc_idr
);
5749 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5751 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5753 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5754 unsigned int supported_rotations
)
5756 static const struct drm_prop_enum_list props
[] = {
5757 { DRM_ROTATE_0
, "rotate-0" },
5758 { DRM_ROTATE_90
, "rotate-90" },
5759 { DRM_ROTATE_180
, "rotate-180" },
5760 { DRM_ROTATE_270
, "rotate-270" },
5761 { DRM_REFLECT_X
, "reflect-x" },
5762 { DRM_REFLECT_Y
, "reflect-y" },
5765 return drm_property_create_bitmask(dev
, 0, "rotation",
5766 props
, ARRAY_SIZE(props
),
5767 supported_rotations
);
5769 EXPORT_SYMBOL(drm_mode_create_rotation_property
);
5774 * Tile groups are used to represent tiled monitors with a unique
5775 * integer identifier. Tiled monitors using DisplayID v1.3 have
5776 * a unique 8-byte handle, we store this in a tile group, so we
5777 * have a common identifier for all tiles in a monitor group.
5779 static void drm_tile_group_free(struct kref
*kref
)
5781 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
5782 struct drm_device
*dev
= tg
->dev
;
5783 mutex_lock(&dev
->mode_config
.idr_mutex
);
5784 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
5785 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5790 * drm_mode_put_tile_group - drop a reference to a tile group.
5792 * @tg: tile group to drop reference to.
5794 * drop reference to tile group and free if 0.
5796 void drm_mode_put_tile_group(struct drm_device
*dev
,
5797 struct drm_tile_group
*tg
)
5799 kref_put(&tg
->refcount
, drm_tile_group_free
);
5803 * drm_mode_get_tile_group - get a reference to an existing tile group
5805 * @topology: 8-bytes unique per monitor.
5807 * Use the unique bytes to get a reference to an existing tile group.
5810 * tile group or NULL if not found.
5812 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
5815 struct drm_tile_group
*tg
;
5817 mutex_lock(&dev
->mode_config
.idr_mutex
);
5818 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
5819 if (!memcmp(tg
->group_data
, topology
, 8)) {
5820 if (!kref_get_unless_zero(&tg
->refcount
))
5822 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5826 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5829 EXPORT_SYMBOL(drm_mode_get_tile_group
);
5832 * drm_mode_create_tile_group - create a tile group from a displayid description
5834 * @topology: 8-bytes unique per monitor.
5836 * Create a tile group for the unique monitor, and get a unique
5837 * identifier for the tile group.
5840 * new tile group or error.
5842 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
5845 struct drm_tile_group
*tg
;
5848 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
5850 return ERR_PTR(-ENOMEM
);
5852 kref_init(&tg
->refcount
);
5853 memcpy(tg
->group_data
, topology
, 8);
5856 mutex_lock(&dev
->mode_config
.idr_mutex
);
5857 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
5865 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5868 EXPORT_SYMBOL(drm_mode_create_tile_group
);