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>
42 #include "drm_crtc_internal.h"
43 #include "drm_internal.h"
45 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
46 struct drm_mode_fb_cmd2
*r
,
47 struct drm_file
*file_priv
);
49 /* Avoid boilerplate. I'm tired of typing. */
50 #define DRM_ENUM_NAME_FN(fnname, list) \
51 const char *fnname(int val) \
54 for (i = 0; i < ARRAY_SIZE(list); i++) { \
55 if (list[i].type == val) \
56 return list[i].name; \
64 static const struct drm_prop_enum_list drm_dpms_enum_list
[] =
65 { { DRM_MODE_DPMS_ON
, "On" },
66 { DRM_MODE_DPMS_STANDBY
, "Standby" },
67 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
68 { DRM_MODE_DPMS_OFF
, "Off" }
71 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
73 static const struct drm_prop_enum_list drm_plane_type_enum_list
[] =
75 { DRM_PLANE_TYPE_OVERLAY
, "Overlay" },
76 { DRM_PLANE_TYPE_PRIMARY
, "Primary" },
77 { DRM_PLANE_TYPE_CURSOR
, "Cursor" },
83 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
[] =
102 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
103 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
104 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
107 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
109 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] =
111 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
112 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
113 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
116 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
117 drm_dvi_i_subconnector_enum_list
)
119 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] =
121 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
125 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
128 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
130 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] =
132 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
133 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
134 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
135 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
136 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
139 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
140 drm_tv_subconnector_enum_list
)
142 static const struct drm_prop_enum_list drm_dirty_info_enum_list
[] = {
143 { DRM_MODE_DIRTY_OFF
, "Off" },
144 { DRM_MODE_DIRTY_ON
, "On" },
145 { DRM_MODE_DIRTY_ANNOTATE
, "Annotate" },
148 struct drm_conn_prop_enum_list
{
155 * Connector and encoder types.
157 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] =
158 { { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
159 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
160 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
161 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
162 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
163 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
164 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
165 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
166 { DRM_MODE_CONNECTOR_Component
, "Component" },
167 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
168 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
169 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
170 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
171 { DRM_MODE_CONNECTOR_TV
, "TV" },
172 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
173 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
174 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
177 static const struct drm_prop_enum_list drm_encoder_enum_list
[] =
178 { { DRM_MODE_ENCODER_NONE
, "None" },
179 { DRM_MODE_ENCODER_DAC
, "DAC" },
180 { DRM_MODE_ENCODER_TMDS
, "TMDS" },
181 { DRM_MODE_ENCODER_LVDS
, "LVDS" },
182 { DRM_MODE_ENCODER_TVDAC
, "TV" },
183 { DRM_MODE_ENCODER_VIRTUAL
, "Virtual" },
184 { DRM_MODE_ENCODER_DSI
, "DSI" },
185 { DRM_MODE_ENCODER_DPMST
, "DP MST" },
188 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] =
190 { SubPixelUnknown
, "Unknown" },
191 { SubPixelHorizontalRGB
, "Horizontal RGB" },
192 { SubPixelHorizontalBGR
, "Horizontal BGR" },
193 { SubPixelVerticalRGB
, "Vertical RGB" },
194 { SubPixelVerticalBGR
, "Vertical BGR" },
195 { SubPixelNone
, "None" },
198 void drm_connector_ida_init(void)
202 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
203 ida_init(&drm_connector_enum_list
[i
].ida
);
206 void drm_connector_ida_destroy(void)
210 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
211 ida_destroy(&drm_connector_enum_list
[i
].ida
);
215 * drm_get_connector_status_name - return a string for connector status
216 * @status: connector status to compute name of
218 * In contrast to the other drm_get_*_name functions this one here returns a
219 * const pointer and hence is threadsafe.
221 const char *drm_get_connector_status_name(enum drm_connector_status status
)
223 if (status
== connector_status_connected
)
225 else if (status
== connector_status_disconnected
)
226 return "disconnected";
230 EXPORT_SYMBOL(drm_get_connector_status_name
);
233 * drm_get_subpixel_order_name - return a string for a given subpixel enum
234 * @order: enum of subpixel_order
236 * Note you could abuse this and return something out of bounds, but that
237 * would be a caller error. No unscrubbed user data should make it here.
239 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
241 return drm_subpixel_enum_list
[order
].name
;
243 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
245 static char printable_char(int c
)
247 return isascii(c
) && isprint(c
) ? c
: '?';
251 * drm_get_format_name - return a string for drm fourcc format
252 * @format: format to compute name of
254 * Note that the buffer used by this function is globally shared and owned by
255 * the function itself.
257 * FIXME: This isn't really multithreading safe.
259 const char *drm_get_format_name(uint32_t format
)
263 snprintf(buf
, sizeof(buf
),
264 "%c%c%c%c %s-endian (0x%08x)",
265 printable_char(format
& 0xff),
266 printable_char((format
>> 8) & 0xff),
267 printable_char((format
>> 16) & 0xff),
268 printable_char((format
>> 24) & 0x7f),
269 format
& DRM_FORMAT_BIG_ENDIAN
? "big" : "little",
274 EXPORT_SYMBOL(drm_get_format_name
);
277 * Internal function to assign a slot in the object idr and optionally
278 * register the object into the idr.
280 static int drm_mode_object_get_reg(struct drm_device
*dev
,
281 struct drm_mode_object
*obj
,
287 mutex_lock(&dev
->mode_config
.idr_mutex
);
288 ret
= idr_alloc(&dev
->mode_config
.crtc_idr
, register_obj
? obj
: NULL
, 1, 0, GFP_KERNEL
);
291 * Set up the object linking under the protection of the idr
292 * lock so that other users can't see inconsistent state.
295 obj
->type
= obj_type
;
297 mutex_unlock(&dev
->mode_config
.idr_mutex
);
299 return ret
< 0 ? ret
: 0;
303 * drm_mode_object_get - allocate a new modeset identifier
305 * @obj: object pointer, used to generate unique ID
306 * @obj_type: object type
308 * Create a unique identifier based on @ptr in @dev's identifier space. Used
309 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
310 * modeset identifiers are _not_ reference counted. Hence don't use this for
311 * reference counted modeset objects like framebuffers.
314 * New unique (relative to other objects in @dev) integer identifier for the
317 int drm_mode_object_get(struct drm_device
*dev
,
318 struct drm_mode_object
*obj
, uint32_t obj_type
)
320 return drm_mode_object_get_reg(dev
, obj
, obj_type
, true);
323 static void drm_mode_object_register(struct drm_device
*dev
,
324 struct drm_mode_object
*obj
)
326 mutex_lock(&dev
->mode_config
.idr_mutex
);
327 idr_replace(&dev
->mode_config
.crtc_idr
, obj
, obj
->id
);
328 mutex_unlock(&dev
->mode_config
.idr_mutex
);
332 * drm_mode_object_put - free a modeset identifer
334 * @object: object to free
336 * Free @id from @dev's unique identifier pool. Note that despite the _get
337 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
338 * for reference counted modeset objects like framebuffers.
340 void drm_mode_object_put(struct drm_device
*dev
,
341 struct drm_mode_object
*object
)
343 mutex_lock(&dev
->mode_config
.idr_mutex
);
344 idr_remove(&dev
->mode_config
.crtc_idr
, object
->id
);
345 mutex_unlock(&dev
->mode_config
.idr_mutex
);
348 static struct drm_mode_object
*_object_find(struct drm_device
*dev
,
349 uint32_t id
, uint32_t type
)
351 struct drm_mode_object
*obj
= NULL
;
353 mutex_lock(&dev
->mode_config
.idr_mutex
);
354 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
355 if (obj
&& type
!= DRM_MODE_OBJECT_ANY
&& obj
->type
!= type
)
357 if (obj
&& obj
->id
!= id
)
359 /* don't leak out unref'd fb's */
360 if (obj
&& (obj
->type
== DRM_MODE_OBJECT_FB
))
362 mutex_unlock(&dev
->mode_config
.idr_mutex
);
368 * drm_mode_object_find - look up a drm object with static lifetime
370 * @id: id of the mode object
371 * @type: type of the mode object
373 * Note that framebuffers cannot be looked up with this functions - since those
374 * are reference counted, they need special treatment. Even with
375 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
376 * rather than WARN_ON()).
378 struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
379 uint32_t id
, uint32_t type
)
381 struct drm_mode_object
*obj
= NULL
;
383 /* Framebuffers are reference counted and need their own lookup
385 WARN_ON(type
== DRM_MODE_OBJECT_FB
);
386 obj
= _object_find(dev
, id
, type
);
389 EXPORT_SYMBOL(drm_mode_object_find
);
392 * drm_framebuffer_init - initialize a framebuffer
394 * @fb: framebuffer to be initialized
395 * @funcs: ... with these functions
397 * Allocates an ID for the framebuffer's parent mode object, sets its mode
398 * functions & device file and adds it to the master fd list.
401 * This functions publishes the fb and makes it available for concurrent access
402 * by other users. Which means by this point the fb _must_ be fully set up -
403 * since all the fb attributes are invariant over its lifetime, no further
404 * locking but only correct reference counting is required.
407 * Zero on success, error code on failure.
409 int drm_framebuffer_init(struct drm_device
*dev
, struct drm_framebuffer
*fb
,
410 const struct drm_framebuffer_funcs
*funcs
)
414 mutex_lock(&dev
->mode_config
.fb_lock
);
415 kref_init(&fb
->refcount
);
416 INIT_LIST_HEAD(&fb
->filp_head
);
420 ret
= drm_mode_object_get(dev
, &fb
->base
, DRM_MODE_OBJECT_FB
);
424 dev
->mode_config
.num_fb
++;
425 list_add(&fb
->head
, &dev
->mode_config
.fb_list
);
427 mutex_unlock(&dev
->mode_config
.fb_lock
);
431 EXPORT_SYMBOL(drm_framebuffer_init
);
433 /* dev->mode_config.fb_lock must be held! */
434 static void __drm_framebuffer_unregister(struct drm_device
*dev
,
435 struct drm_framebuffer
*fb
)
437 mutex_lock(&dev
->mode_config
.idr_mutex
);
438 idr_remove(&dev
->mode_config
.crtc_idr
, fb
->base
.id
);
439 mutex_unlock(&dev
->mode_config
.idr_mutex
);
444 static void drm_framebuffer_free(struct kref
*kref
)
446 struct drm_framebuffer
*fb
=
447 container_of(kref
, struct drm_framebuffer
, refcount
);
448 struct drm_device
*dev
= fb
->dev
;
451 * The lookup idr holds a weak reference, which has not necessarily been
452 * removed at this point. Check for that.
454 mutex_lock(&dev
->mode_config
.fb_lock
);
456 /* Mark fb as reaped and drop idr ref. */
457 __drm_framebuffer_unregister(dev
, fb
);
459 mutex_unlock(&dev
->mode_config
.fb_lock
);
461 fb
->funcs
->destroy(fb
);
464 static struct drm_framebuffer
*__drm_framebuffer_lookup(struct drm_device
*dev
,
467 struct drm_mode_object
*obj
= NULL
;
468 struct drm_framebuffer
*fb
;
470 mutex_lock(&dev
->mode_config
.idr_mutex
);
471 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
472 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_FB
) || (obj
->id
!= id
))
476 mutex_unlock(&dev
->mode_config
.idr_mutex
);
482 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
484 * @id: id of the fb object
486 * If successful, this grabs an additional reference to the framebuffer -
487 * callers need to make sure to eventually unreference the returned framebuffer
488 * again, using @drm_framebuffer_unreference.
490 struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
493 struct drm_framebuffer
*fb
;
495 mutex_lock(&dev
->mode_config
.fb_lock
);
496 fb
= __drm_framebuffer_lookup(dev
, id
);
498 if (!kref_get_unless_zero(&fb
->refcount
))
501 mutex_unlock(&dev
->mode_config
.fb_lock
);
505 EXPORT_SYMBOL(drm_framebuffer_lookup
);
508 * drm_framebuffer_unreference - unref a framebuffer
509 * @fb: framebuffer to unref
511 * This functions decrements the fb's refcount and frees it if it drops to zero.
513 void drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
515 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
516 kref_put(&fb
->refcount
, drm_framebuffer_free
);
518 EXPORT_SYMBOL(drm_framebuffer_unreference
);
521 * drm_framebuffer_reference - incr the fb refcnt
524 * This functions increments the fb's refcount.
526 void drm_framebuffer_reference(struct drm_framebuffer
*fb
)
528 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
529 kref_get(&fb
->refcount
);
531 EXPORT_SYMBOL(drm_framebuffer_reference
);
533 static void drm_framebuffer_free_bug(struct kref
*kref
)
538 static void __drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
540 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
541 kref_put(&fb
->refcount
, drm_framebuffer_free_bug
);
545 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
546 * @fb: fb to unregister
548 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
549 * those used for fbdev. Note that the caller must hold a reference of it's own,
550 * i.e. the object may not be destroyed through this call (since it'll lead to a
551 * locking inversion).
553 void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
)
555 struct drm_device
*dev
= fb
->dev
;
557 mutex_lock(&dev
->mode_config
.fb_lock
);
558 /* Mark fb as reaped and drop idr ref. */
559 __drm_framebuffer_unregister(dev
, fb
);
560 mutex_unlock(&dev
->mode_config
.fb_lock
);
562 EXPORT_SYMBOL(drm_framebuffer_unregister_private
);
565 * drm_framebuffer_cleanup - remove a framebuffer object
566 * @fb: framebuffer to remove
568 * Cleanup framebuffer. This function is intended to be used from the drivers
569 * ->destroy callback. It can also be used to clean up driver private
570 * framebuffers embedded into a larger structure.
572 * Note that this function does not remove the fb from active usuage - if it is
573 * still used anywhere, hilarity can ensue since userspace could call getfb on
574 * the id and get back -EINVAL. Obviously no concern at driver unload time.
576 * Also, the framebuffer will not be removed from the lookup idr - for
577 * user-created framebuffers this will happen in in the rmfb ioctl. For
578 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
579 * drm_framebuffer_unregister_private.
581 void drm_framebuffer_cleanup(struct drm_framebuffer
*fb
)
583 struct drm_device
*dev
= fb
->dev
;
585 mutex_lock(&dev
->mode_config
.fb_lock
);
587 dev
->mode_config
.num_fb
--;
588 mutex_unlock(&dev
->mode_config
.fb_lock
);
590 EXPORT_SYMBOL(drm_framebuffer_cleanup
);
593 * drm_framebuffer_remove - remove and unreference a framebuffer object
594 * @fb: framebuffer to remove
596 * Scans all the CRTCs and planes in @dev's mode_config. If they're
597 * using @fb, removes it, setting it to NULL. Then drops the reference to the
598 * passed-in framebuffer. Might take the modeset locks.
600 * Note that this function optimizes the cleanup away if the caller holds the
601 * last reference to the framebuffer. It is also guaranteed to not take the
602 * modeset locks in this case.
604 void drm_framebuffer_remove(struct drm_framebuffer
*fb
)
606 struct drm_device
*dev
= fb
->dev
;
607 struct drm_crtc
*crtc
;
608 struct drm_plane
*plane
;
609 struct drm_mode_set set
;
612 WARN_ON(!list_empty(&fb
->filp_head
));
615 * drm ABI mandates that we remove any deleted framebuffers from active
616 * useage. But since most sane clients only remove framebuffers they no
617 * longer need, try to optimize this away.
619 * Since we're holding a reference ourselves, observing a refcount of 1
620 * means that we're the last holder and can skip it. Also, the refcount
621 * can never increase from 1 again, so we don't need any barriers or
624 * Note that userspace could try to race with use and instate a new
625 * usage _after_ we've cleared all current ones. End result will be an
626 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
629 if (atomic_read(&fb
->refcount
.refcount
) > 1) {
630 drm_modeset_lock_all(dev
);
631 /* remove from any CRTC */
632 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
633 if (crtc
->primary
->fb
== fb
) {
634 /* should turn off the crtc */
635 memset(&set
, 0, sizeof(struct drm_mode_set
));
638 ret
= drm_mode_set_config_internal(&set
);
640 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc
);
644 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
) {
646 drm_plane_force_disable(plane
);
648 drm_modeset_unlock_all(dev
);
651 drm_framebuffer_unreference(fb
);
653 EXPORT_SYMBOL(drm_framebuffer_remove
);
655 DEFINE_WW_CLASS(crtc_ww_class
);
658 * drm_crtc_init_with_planes - Initialise a new CRTC object with
659 * specified primary and cursor planes.
661 * @crtc: CRTC object to init
662 * @primary: Primary plane for CRTC
663 * @cursor: Cursor plane for CRTC
664 * @funcs: callbacks for the new CRTC
666 * Inits a new object created as base part of a driver crtc object.
669 * Zero on success, error code on failure.
671 int drm_crtc_init_with_planes(struct drm_device
*dev
, struct drm_crtc
*crtc
,
672 struct drm_plane
*primary
,
673 struct drm_plane
*cursor
,
674 const struct drm_crtc_funcs
*funcs
)
676 struct drm_mode_config
*config
= &dev
->mode_config
;
681 crtc
->invert_dimensions
= false;
683 drm_modeset_lock_init(&crtc
->mutex
);
684 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
688 crtc
->base
.properties
= &crtc
->properties
;
690 list_add_tail(&crtc
->head
, &config
->crtc_list
);
693 crtc
->primary
= primary
;
694 crtc
->cursor
= cursor
;
696 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
698 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
702 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
705 * drm_crtc_cleanup - Clean up the core crtc usage
706 * @crtc: CRTC to cleanup
708 * This function cleans up @crtc and removes it from the DRM mode setting
709 * core. Note that the function does *not* free the crtc structure itself,
710 * this is the responsibility of the caller.
712 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
714 struct drm_device
*dev
= crtc
->dev
;
716 kfree(crtc
->gamma_store
);
717 crtc
->gamma_store
= NULL
;
719 drm_modeset_lock_fini(&crtc
->mutex
);
721 drm_mode_object_put(dev
, &crtc
->base
);
722 list_del(&crtc
->head
);
723 dev
->mode_config
.num_crtc
--;
725 WARN_ON(crtc
->state
&& !crtc
->funcs
->atomic_destroy_state
);
726 if (crtc
->state
&& crtc
->funcs
->atomic_destroy_state
)
727 crtc
->funcs
->atomic_destroy_state(crtc
, crtc
->state
);
729 memset(crtc
, 0, sizeof(*crtc
));
731 EXPORT_SYMBOL(drm_crtc_cleanup
);
734 * drm_crtc_index - find the index of a registered CRTC
735 * @crtc: CRTC to find index for
737 * Given a registered CRTC, return the index of that CRTC within a DRM
738 * device's list of CRTCs.
740 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
742 unsigned int index
= 0;
743 struct drm_crtc
*tmp
;
745 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
754 EXPORT_SYMBOL(drm_crtc_index
);
757 * drm_mode_remove - remove and free a mode
758 * @connector: connector list to modify
759 * @mode: mode to remove
761 * Remove @mode from @connector's mode list, then free it.
763 static void drm_mode_remove(struct drm_connector
*connector
,
764 struct drm_display_mode
*mode
)
766 list_del(&mode
->head
);
767 drm_mode_destroy(connector
->dev
, mode
);
771 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
772 * @connector: connector to quwery
774 * The kernel supports per-connector configration of its consoles through
775 * use of the video= parameter. This function parses that option and
776 * extracts the user's specified mode (or enable/disable status) for a
777 * particular connector. This is typically only used during the early fbdev
780 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
782 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
785 if (fb_get_options(connector
->name
, &option
))
788 if (!drm_mode_parse_command_line_for_connector(option
,
796 switch (mode
->force
) {
800 case DRM_FORCE_ON_DIGITAL
:
809 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
810 connector
->force
= mode
->force
;
813 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
815 mode
->xres
, mode
->yres
,
816 mode
->refresh_specified
? mode
->refresh
: 60,
817 mode
->rb
? " reduced blanking" : "",
818 mode
->margins
? " with margins" : "",
819 mode
->interlace
? " interlaced" : "");
823 * drm_connector_init - Init a preallocated connector
825 * @connector: the connector to init
826 * @funcs: callbacks for this connector
827 * @connector_type: user visible type of the connector
829 * Initialises a preallocated connector. Connectors should be
830 * subclassed as part of driver connector objects.
833 * Zero on success, error code on failure.
835 int drm_connector_init(struct drm_device
*dev
,
836 struct drm_connector
*connector
,
837 const struct drm_connector_funcs
*funcs
,
841 struct ida
*connector_ida
=
842 &drm_connector_enum_list
[connector_type
].ida
;
844 drm_modeset_lock_all(dev
);
846 ret
= drm_mode_object_get_reg(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
, false);
850 connector
->base
.properties
= &connector
->properties
;
851 connector
->dev
= dev
;
852 connector
->funcs
= funcs
;
853 connector
->connector_type
= connector_type
;
854 connector
->connector_type_id
=
855 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
856 if (connector
->connector_type_id
< 0) {
857 ret
= connector
->connector_type_id
;
861 kasprintf(GFP_KERNEL
, "%s-%d",
862 drm_connector_enum_list
[connector_type
].name
,
863 connector
->connector_type_id
);
864 if (!connector
->name
) {
869 INIT_LIST_HEAD(&connector
->probed_modes
);
870 INIT_LIST_HEAD(&connector
->modes
);
871 connector
->edid_blob_ptr
= NULL
;
872 connector
->status
= connector_status_unknown
;
874 drm_connector_get_cmdline_mode(connector
);
876 /* We should add connectors at the end to avoid upsetting the connector
878 list_add_tail(&connector
->head
, &dev
->mode_config
.connector_list
);
879 dev
->mode_config
.num_connector
++;
881 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
882 drm_object_attach_property(&connector
->base
,
883 dev
->mode_config
.edid_property
,
886 drm_object_attach_property(&connector
->base
,
887 dev
->mode_config
.dpms_property
, 0);
889 connector
->debugfs_entry
= NULL
;
893 drm_mode_object_put(dev
, &connector
->base
);
896 drm_modeset_unlock_all(dev
);
900 EXPORT_SYMBOL(drm_connector_init
);
903 * drm_connector_cleanup - cleans up an initialised connector
904 * @connector: connector to cleanup
906 * Cleans up the connector but doesn't free the object.
908 void drm_connector_cleanup(struct drm_connector
*connector
)
910 struct drm_device
*dev
= connector
->dev
;
911 struct drm_display_mode
*mode
, *t
;
913 if (connector
->tile_group
) {
914 drm_mode_put_tile_group(dev
, connector
->tile_group
);
915 connector
->tile_group
= NULL
;
918 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
919 drm_mode_remove(connector
, mode
);
921 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
922 drm_mode_remove(connector
, mode
);
924 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
925 connector
->connector_type_id
);
927 drm_mode_object_put(dev
, &connector
->base
);
928 kfree(connector
->name
);
929 connector
->name
= NULL
;
930 list_del(&connector
->head
);
931 dev
->mode_config
.num_connector
--;
933 WARN_ON(connector
->state
&& !connector
->funcs
->atomic_destroy_state
);
934 if (connector
->state
&& connector
->funcs
->atomic_destroy_state
)
935 connector
->funcs
->atomic_destroy_state(connector
,
938 memset(connector
, 0, sizeof(*connector
));
940 EXPORT_SYMBOL(drm_connector_cleanup
);
943 * drm_connector_index - find the index of a registered connector
944 * @connector: connector to find index for
946 * Given a registered connector, return the index of that connector within a DRM
947 * device's list of connectors.
949 unsigned int drm_connector_index(struct drm_connector
*connector
)
951 unsigned int index
= 0;
952 struct drm_connector
*tmp
;
953 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
955 WARN_ON(!drm_modeset_is_locked(&config
->connection_mutex
));
957 list_for_each_entry(tmp
, &connector
->dev
->mode_config
.connector_list
, head
) {
958 if (tmp
== connector
)
966 EXPORT_SYMBOL(drm_connector_index
);
969 * drm_connector_register - register a connector
970 * @connector: the connector to register
972 * Register userspace interfaces for a connector
975 * Zero on success, error code on failure.
977 int drm_connector_register(struct drm_connector
*connector
)
981 drm_mode_object_register(connector
->dev
, &connector
->base
);
983 ret
= drm_sysfs_connector_add(connector
);
987 ret
= drm_debugfs_connector_add(connector
);
989 drm_sysfs_connector_remove(connector
);
995 EXPORT_SYMBOL(drm_connector_register
);
998 * drm_connector_unregister - unregister a connector
999 * @connector: the connector to unregister
1001 * Unregister userspace interfaces for a connector
1003 void drm_connector_unregister(struct drm_connector
*connector
)
1005 drm_sysfs_connector_remove(connector
);
1006 drm_debugfs_connector_remove(connector
);
1008 EXPORT_SYMBOL(drm_connector_unregister
);
1012 * drm_connector_unplug_all - unregister connector userspace interfaces
1015 * This function unregisters all connector userspace interfaces in sysfs. Should
1016 * be call when the device is disconnected, e.g. from an usb driver's
1017 * ->disconnect callback.
1019 void drm_connector_unplug_all(struct drm_device
*dev
)
1021 struct drm_connector
*connector
;
1023 /* taking the mode config mutex ends up in a clash with sysfs */
1024 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1025 drm_connector_unregister(connector
);
1028 EXPORT_SYMBOL(drm_connector_unplug_all
);
1031 * drm_bridge_init - initialize a drm transcoder/bridge
1033 * @bridge: transcoder/bridge to set up
1034 * @funcs: bridge function table
1036 * Initialises a preallocated bridge. Bridges should be
1037 * subclassed as part of driver connector objects.
1040 * Zero on success, error code on failure.
1042 int drm_bridge_init(struct drm_device
*dev
, struct drm_bridge
*bridge
,
1043 const struct drm_bridge_funcs
*funcs
)
1047 drm_modeset_lock_all(dev
);
1049 ret
= drm_mode_object_get(dev
, &bridge
->base
, DRM_MODE_OBJECT_BRIDGE
);
1054 bridge
->funcs
= funcs
;
1056 list_add_tail(&bridge
->head
, &dev
->mode_config
.bridge_list
);
1057 dev
->mode_config
.num_bridge
++;
1060 drm_modeset_unlock_all(dev
);
1063 EXPORT_SYMBOL(drm_bridge_init
);
1066 * drm_bridge_cleanup - cleans up an initialised bridge
1067 * @bridge: bridge to cleanup
1069 * Cleans up the bridge but doesn't free the object.
1071 void drm_bridge_cleanup(struct drm_bridge
*bridge
)
1073 struct drm_device
*dev
= bridge
->dev
;
1075 drm_modeset_lock_all(dev
);
1076 drm_mode_object_put(dev
, &bridge
->base
);
1077 list_del(&bridge
->head
);
1078 dev
->mode_config
.num_bridge
--;
1079 drm_modeset_unlock_all(dev
);
1081 memset(bridge
, 0, sizeof(*bridge
));
1083 EXPORT_SYMBOL(drm_bridge_cleanup
);
1086 * drm_encoder_init - Init a preallocated encoder
1088 * @encoder: the encoder to init
1089 * @funcs: callbacks for this encoder
1090 * @encoder_type: user visible type of the encoder
1092 * Initialises a preallocated encoder. Encoder should be
1093 * subclassed as part of driver encoder objects.
1096 * Zero on success, error code on failure.
1098 int drm_encoder_init(struct drm_device
*dev
,
1099 struct drm_encoder
*encoder
,
1100 const struct drm_encoder_funcs
*funcs
,
1105 drm_modeset_lock_all(dev
);
1107 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1112 encoder
->encoder_type
= encoder_type
;
1113 encoder
->funcs
= funcs
;
1114 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1115 drm_encoder_enum_list
[encoder_type
].name
,
1117 if (!encoder
->name
) {
1122 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1123 dev
->mode_config
.num_encoder
++;
1127 drm_mode_object_put(dev
, &encoder
->base
);
1130 drm_modeset_unlock_all(dev
);
1134 EXPORT_SYMBOL(drm_encoder_init
);
1137 * drm_encoder_cleanup - cleans up an initialised encoder
1138 * @encoder: encoder to cleanup
1140 * Cleans up the encoder but doesn't free the object.
1142 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1144 struct drm_device
*dev
= encoder
->dev
;
1145 drm_modeset_lock_all(dev
);
1146 drm_mode_object_put(dev
, &encoder
->base
);
1147 kfree(encoder
->name
);
1148 list_del(&encoder
->head
);
1149 dev
->mode_config
.num_encoder
--;
1150 drm_modeset_unlock_all(dev
);
1152 memset(encoder
, 0, sizeof(*encoder
));
1154 EXPORT_SYMBOL(drm_encoder_cleanup
);
1157 * drm_universal_plane_init - Initialize a new universal plane object
1159 * @plane: plane object to init
1160 * @possible_crtcs: bitmask of possible CRTCs
1161 * @funcs: callbacks for the new plane
1162 * @formats: array of supported formats (%DRM_FORMAT_*)
1163 * @format_count: number of elements in @formats
1164 * @type: type of plane (overlay, primary, cursor)
1166 * Initializes a plane object of type @type.
1169 * Zero on success, error code on failure.
1171 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1172 unsigned long possible_crtcs
,
1173 const struct drm_plane_funcs
*funcs
,
1174 const uint32_t *formats
, uint32_t format_count
,
1175 enum drm_plane_type type
)
1179 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1183 drm_modeset_lock_init(&plane
->mutex
);
1185 plane
->base
.properties
= &plane
->properties
;
1187 plane
->funcs
= funcs
;
1188 plane
->format_types
= kmalloc(sizeof(uint32_t) * format_count
,
1190 if (!plane
->format_types
) {
1191 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1192 drm_mode_object_put(dev
, &plane
->base
);
1196 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1197 plane
->format_count
= format_count
;
1198 plane
->possible_crtcs
= possible_crtcs
;
1201 list_add_tail(&plane
->head
, &dev
->mode_config
.plane_list
);
1202 dev
->mode_config
.num_total_plane
++;
1203 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1204 dev
->mode_config
.num_overlay_plane
++;
1206 drm_object_attach_property(&plane
->base
,
1207 dev
->mode_config
.plane_type_property
,
1212 EXPORT_SYMBOL(drm_universal_plane_init
);
1215 * drm_plane_init - Initialize a legacy plane
1217 * @plane: plane object to init
1218 * @possible_crtcs: bitmask of possible CRTCs
1219 * @funcs: callbacks for the new plane
1220 * @formats: array of supported formats (%DRM_FORMAT_*)
1221 * @format_count: number of elements in @formats
1222 * @is_primary: plane type (primary vs overlay)
1224 * Legacy API to initialize a DRM plane.
1226 * New drivers should call drm_universal_plane_init() instead.
1229 * Zero on success, error code on failure.
1231 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1232 unsigned long possible_crtcs
,
1233 const struct drm_plane_funcs
*funcs
,
1234 const uint32_t *formats
, uint32_t format_count
,
1237 enum drm_plane_type type
;
1239 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1240 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1241 formats
, format_count
, type
);
1243 EXPORT_SYMBOL(drm_plane_init
);
1246 * drm_plane_cleanup - Clean up the core plane usage
1247 * @plane: plane to cleanup
1249 * This function cleans up @plane and removes it from the DRM mode setting
1250 * core. Note that the function does *not* free the plane structure itself,
1251 * this is the responsibility of the caller.
1253 void drm_plane_cleanup(struct drm_plane
*plane
)
1255 struct drm_device
*dev
= plane
->dev
;
1257 drm_modeset_lock_all(dev
);
1258 kfree(plane
->format_types
);
1259 drm_mode_object_put(dev
, &plane
->base
);
1261 BUG_ON(list_empty(&plane
->head
));
1263 list_del(&plane
->head
);
1264 dev
->mode_config
.num_total_plane
--;
1265 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1266 dev
->mode_config
.num_overlay_plane
--;
1267 drm_modeset_unlock_all(dev
);
1269 WARN_ON(plane
->state
&& !plane
->funcs
->atomic_destroy_state
);
1270 if (plane
->state
&& plane
->funcs
->atomic_destroy_state
)
1271 plane
->funcs
->atomic_destroy_state(plane
, plane
->state
);
1273 memset(plane
, 0, sizeof(*plane
));
1275 EXPORT_SYMBOL(drm_plane_cleanup
);
1278 * drm_plane_index - find the index of a registered plane
1279 * @plane: plane to find index for
1281 * Given a registered plane, return the index of that CRTC within a DRM
1282 * device's list of planes.
1284 unsigned int drm_plane_index(struct drm_plane
*plane
)
1286 unsigned int index
= 0;
1287 struct drm_plane
*tmp
;
1289 list_for_each_entry(tmp
, &plane
->dev
->mode_config
.plane_list
, head
) {
1298 EXPORT_SYMBOL(drm_plane_index
);
1301 * drm_plane_force_disable - Forcibly disable a plane
1302 * @plane: plane to disable
1304 * Forces the plane to be disabled.
1306 * Used when the plane's current framebuffer is destroyed,
1307 * and when restoring fbdev mode.
1309 void drm_plane_force_disable(struct drm_plane
*plane
)
1316 plane
->old_fb
= plane
->fb
;
1317 ret
= plane
->funcs
->disable_plane(plane
);
1319 DRM_ERROR("failed to disable plane with busy fb\n");
1320 plane
->old_fb
= NULL
;
1323 /* disconnect the plane from the fb and crtc: */
1324 __drm_framebuffer_unreference(plane
->old_fb
);
1325 plane
->old_fb
= NULL
;
1329 EXPORT_SYMBOL(drm_plane_force_disable
);
1331 static int drm_mode_create_standard_connector_properties(struct drm_device
*dev
)
1333 struct drm_property
*edid
;
1334 struct drm_property
*dpms
;
1335 struct drm_property
*dev_path
;
1338 * Standard properties (apply to all connectors)
1340 edid
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1341 DRM_MODE_PROP_IMMUTABLE
,
1343 dev
->mode_config
.edid_property
= edid
;
1345 dpms
= drm_property_create_enum(dev
, 0,
1346 "DPMS", drm_dpms_enum_list
,
1347 ARRAY_SIZE(drm_dpms_enum_list
));
1348 dev
->mode_config
.dpms_property
= dpms
;
1350 dev_path
= drm_property_create(dev
,
1351 DRM_MODE_PROP_BLOB
|
1352 DRM_MODE_PROP_IMMUTABLE
,
1354 dev
->mode_config
.path_property
= dev_path
;
1356 dev
->mode_config
.tile_property
= drm_property_create(dev
,
1357 DRM_MODE_PROP_BLOB
|
1358 DRM_MODE_PROP_IMMUTABLE
,
1364 static int drm_mode_create_standard_plane_properties(struct drm_device
*dev
)
1366 struct drm_property
*type
;
1369 * Standard properties (apply to all planes)
1371 type
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1372 "type", drm_plane_type_enum_list
,
1373 ARRAY_SIZE(drm_plane_type_enum_list
));
1374 dev
->mode_config
.plane_type_property
= type
;
1380 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1383 * Called by a driver the first time a DVI-I connector is made.
1385 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1387 struct drm_property
*dvi_i_selector
;
1388 struct drm_property
*dvi_i_subconnector
;
1390 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1394 drm_property_create_enum(dev
, 0,
1395 "select subconnector",
1396 drm_dvi_i_select_enum_list
,
1397 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1398 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1400 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1402 drm_dvi_i_subconnector_enum_list
,
1403 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1404 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1408 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1411 * drm_create_tv_properties - create TV specific connector properties
1413 * @num_modes: number of different TV formats (modes) supported
1414 * @modes: array of pointers to strings containing name of each format
1416 * Called by a driver's TV initialization routine, this function creates
1417 * the TV specific connector properties for a given device. Caller is
1418 * responsible for allocating a list of format names and passing them to
1421 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1422 unsigned int num_modes
,
1425 struct drm_property
*tv_selector
;
1426 struct drm_property
*tv_subconnector
;
1429 if (dev
->mode_config
.tv_select_subconnector_property
)
1433 * Basic connector properties
1435 tv_selector
= drm_property_create_enum(dev
, 0,
1436 "select subconnector",
1437 drm_tv_select_enum_list
,
1438 ARRAY_SIZE(drm_tv_select_enum_list
));
1439 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1442 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1444 drm_tv_subconnector_enum_list
,
1445 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1446 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1449 * Other, TV specific properties: margins & TV modes.
1451 dev
->mode_config
.tv_left_margin_property
=
1452 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1454 dev
->mode_config
.tv_right_margin_property
=
1455 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1457 dev
->mode_config
.tv_top_margin_property
=
1458 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1460 dev
->mode_config
.tv_bottom_margin_property
=
1461 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1463 dev
->mode_config
.tv_mode_property
=
1464 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1466 for (i
= 0; i
< num_modes
; i
++)
1467 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1470 dev
->mode_config
.tv_brightness_property
=
1471 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1473 dev
->mode_config
.tv_contrast_property
=
1474 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1476 dev
->mode_config
.tv_flicker_reduction_property
=
1477 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1479 dev
->mode_config
.tv_overscan_property
=
1480 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1482 dev
->mode_config
.tv_saturation_property
=
1483 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1485 dev
->mode_config
.tv_hue_property
=
1486 drm_property_create_range(dev
, 0, "hue", 0, 100);
1490 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1493 * drm_mode_create_scaling_mode_property - create scaling mode property
1496 * Called by a driver the first time it's needed, must be attached to desired
1499 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1501 struct drm_property
*scaling_mode
;
1503 if (dev
->mode_config
.scaling_mode_property
)
1507 drm_property_create_enum(dev
, 0, "scaling mode",
1508 drm_scaling_mode_enum_list
,
1509 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1511 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1515 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1518 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1521 * Called by a driver the first time it's needed, must be attached to desired
1525 * Zero on success, negative errno on failure.
1527 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1529 if (dev
->mode_config
.aspect_ratio_property
)
1532 dev
->mode_config
.aspect_ratio_property
=
1533 drm_property_create_enum(dev
, 0, "aspect ratio",
1534 drm_aspect_ratio_enum_list
,
1535 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1537 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1542 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1545 * drm_mode_create_dirty_property - create dirty property
1548 * Called by a driver the first time it's needed, must be attached to desired
1551 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1553 struct drm_property
*dirty_info
;
1555 if (dev
->mode_config
.dirty_info_property
)
1559 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1561 drm_dirty_info_enum_list
,
1562 ARRAY_SIZE(drm_dirty_info_enum_list
));
1563 dev
->mode_config
.dirty_info_property
= dirty_info
;
1567 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1570 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1573 * Create the the suggested x/y offset property for connectors.
1575 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1577 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1580 dev
->mode_config
.suggested_x_property
=
1581 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1583 dev
->mode_config
.suggested_y_property
=
1584 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1586 if (dev
->mode_config
.suggested_x_property
== NULL
||
1587 dev
->mode_config
.suggested_y_property
== NULL
)
1591 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1593 static int drm_mode_group_init(struct drm_device
*dev
, struct drm_mode_group
*group
)
1595 uint32_t total_objects
= 0;
1597 total_objects
+= dev
->mode_config
.num_crtc
;
1598 total_objects
+= dev
->mode_config
.num_connector
;
1599 total_objects
+= dev
->mode_config
.num_encoder
;
1600 total_objects
+= dev
->mode_config
.num_bridge
;
1602 group
->id_list
= kzalloc(total_objects
* sizeof(uint32_t), GFP_KERNEL
);
1603 if (!group
->id_list
)
1606 group
->num_crtcs
= 0;
1607 group
->num_connectors
= 0;
1608 group
->num_encoders
= 0;
1609 group
->num_bridges
= 0;
1613 void drm_mode_group_destroy(struct drm_mode_group
*group
)
1615 kfree(group
->id_list
);
1616 group
->id_list
= NULL
;
1620 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1621 * the drm core's responsibility to set up mode control groups.
1623 int drm_mode_group_init_legacy_group(struct drm_device
*dev
,
1624 struct drm_mode_group
*group
)
1626 struct drm_crtc
*crtc
;
1627 struct drm_encoder
*encoder
;
1628 struct drm_connector
*connector
;
1629 struct drm_bridge
*bridge
;
1632 if ((ret
= drm_mode_group_init(dev
, group
)))
1635 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
1636 group
->id_list
[group
->num_crtcs
++] = crtc
->base
.id
;
1638 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
1639 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
++] =
1642 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1643 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1644 group
->num_connectors
++] = connector
->base
.id
;
1646 list_for_each_entry(bridge
, &dev
->mode_config
.bridge_list
, head
)
1647 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1648 group
->num_connectors
+ group
->num_bridges
++] =
1653 EXPORT_SYMBOL(drm_mode_group_init_legacy_group
);
1655 void drm_reinit_primary_mode_group(struct drm_device
*dev
)
1657 drm_modeset_lock_all(dev
);
1658 drm_mode_group_destroy(&dev
->primary
->mode_group
);
1659 drm_mode_group_init_legacy_group(dev
, &dev
->primary
->mode_group
);
1660 drm_modeset_unlock_all(dev
);
1662 EXPORT_SYMBOL(drm_reinit_primary_mode_group
);
1665 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1666 * @out: drm_mode_modeinfo struct to return to the user
1667 * @in: drm_display_mode to use
1669 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1672 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo
*out
,
1673 const struct drm_display_mode
*in
)
1675 WARN(in
->hdisplay
> USHRT_MAX
|| in
->hsync_start
> USHRT_MAX
||
1676 in
->hsync_end
> USHRT_MAX
|| in
->htotal
> USHRT_MAX
||
1677 in
->hskew
> USHRT_MAX
|| in
->vdisplay
> USHRT_MAX
||
1678 in
->vsync_start
> USHRT_MAX
|| in
->vsync_end
> USHRT_MAX
||
1679 in
->vtotal
> USHRT_MAX
|| in
->vscan
> USHRT_MAX
,
1680 "timing values too large for mode info\n");
1682 out
->clock
= in
->clock
;
1683 out
->hdisplay
= in
->hdisplay
;
1684 out
->hsync_start
= in
->hsync_start
;
1685 out
->hsync_end
= in
->hsync_end
;
1686 out
->htotal
= in
->htotal
;
1687 out
->hskew
= in
->hskew
;
1688 out
->vdisplay
= in
->vdisplay
;
1689 out
->vsync_start
= in
->vsync_start
;
1690 out
->vsync_end
= in
->vsync_end
;
1691 out
->vtotal
= in
->vtotal
;
1692 out
->vscan
= in
->vscan
;
1693 out
->vrefresh
= in
->vrefresh
;
1694 out
->flags
= in
->flags
;
1695 out
->type
= in
->type
;
1696 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1697 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1701 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1702 * @out: drm_display_mode to return to the user
1703 * @in: drm_mode_modeinfo to use
1705 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1709 * Zero on success, negative errno on failure.
1711 static int drm_crtc_convert_umode(struct drm_display_mode
*out
,
1712 const struct drm_mode_modeinfo
*in
)
1714 if (in
->clock
> INT_MAX
|| in
->vrefresh
> INT_MAX
)
1717 if ((in
->flags
& DRM_MODE_FLAG_3D_MASK
) > DRM_MODE_FLAG_3D_MAX
)
1720 out
->clock
= in
->clock
;
1721 out
->hdisplay
= in
->hdisplay
;
1722 out
->hsync_start
= in
->hsync_start
;
1723 out
->hsync_end
= in
->hsync_end
;
1724 out
->htotal
= in
->htotal
;
1725 out
->hskew
= in
->hskew
;
1726 out
->vdisplay
= in
->vdisplay
;
1727 out
->vsync_start
= in
->vsync_start
;
1728 out
->vsync_end
= in
->vsync_end
;
1729 out
->vtotal
= in
->vtotal
;
1730 out
->vscan
= in
->vscan
;
1731 out
->vrefresh
= in
->vrefresh
;
1732 out
->flags
= in
->flags
;
1733 out
->type
= in
->type
;
1734 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1735 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1741 * drm_mode_getresources - get graphics configuration
1742 * @dev: drm device for the ioctl
1743 * @data: data pointer for the ioctl
1744 * @file_priv: drm file for the ioctl call
1746 * Construct a set of configuration description structures and return
1747 * them to the user, including CRTC, connector and framebuffer configuration.
1749 * Called by the user via ioctl.
1752 * Zero on success, negative errno on failure.
1754 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1755 struct drm_file
*file_priv
)
1757 struct drm_mode_card_res
*card_res
= data
;
1758 struct list_head
*lh
;
1759 struct drm_framebuffer
*fb
;
1760 struct drm_connector
*connector
;
1761 struct drm_crtc
*crtc
;
1762 struct drm_encoder
*encoder
;
1764 int connector_count
= 0;
1767 int encoder_count
= 0;
1769 uint32_t __user
*fb_id
;
1770 uint32_t __user
*crtc_id
;
1771 uint32_t __user
*connector_id
;
1772 uint32_t __user
*encoder_id
;
1773 struct drm_mode_group
*mode_group
;
1775 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1779 mutex_lock(&file_priv
->fbs_lock
);
1781 * For the non-control nodes we need to limit the list of resources
1782 * by IDs in the group list for this node
1784 list_for_each(lh
, &file_priv
->fbs
)
1787 /* handle this in 4 parts */
1789 if (card_res
->count_fbs
>= fb_count
) {
1791 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1792 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1793 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1794 mutex_unlock(&file_priv
->fbs_lock
);
1800 card_res
->count_fbs
= fb_count
;
1801 mutex_unlock(&file_priv
->fbs_lock
);
1803 /* mode_config.mutex protects the connector list against e.g. DP MST
1804 * connector hot-adding. CRTC/Plane lists are invariant. */
1805 mutex_lock(&dev
->mode_config
.mutex
);
1806 if (!drm_is_primary_client(file_priv
)) {
1809 list_for_each(lh
, &dev
->mode_config
.crtc_list
)
1812 list_for_each(lh
, &dev
->mode_config
.connector_list
)
1815 list_for_each(lh
, &dev
->mode_config
.encoder_list
)
1819 mode_group
= &file_priv
->master
->minor
->mode_group
;
1820 crtc_count
= mode_group
->num_crtcs
;
1821 connector_count
= mode_group
->num_connectors
;
1822 encoder_count
= mode_group
->num_encoders
;
1825 card_res
->max_height
= dev
->mode_config
.max_height
;
1826 card_res
->min_height
= dev
->mode_config
.min_height
;
1827 card_res
->max_width
= dev
->mode_config
.max_width
;
1828 card_res
->min_width
= dev
->mode_config
.min_width
;
1831 if (card_res
->count_crtcs
>= crtc_count
) {
1833 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1835 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
,
1837 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1838 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1845 for (i
= 0; i
< mode_group
->num_crtcs
; i
++) {
1846 if (put_user(mode_group
->id_list
[i
],
1847 crtc_id
+ copied
)) {
1855 card_res
->count_crtcs
= crtc_count
;
1858 if (card_res
->count_encoders
>= encoder_count
) {
1860 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1862 list_for_each_entry(encoder
,
1863 &dev
->mode_config
.encoder_list
,
1865 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1867 if (put_user(encoder
->base
.id
, encoder_id
+
1875 for (i
= mode_group
->num_crtcs
; i
< mode_group
->num_crtcs
+ mode_group
->num_encoders
; i
++) {
1876 if (put_user(mode_group
->id_list
[i
],
1877 encoder_id
+ copied
)) {
1886 card_res
->count_encoders
= encoder_count
;
1889 if (card_res
->count_connectors
>= connector_count
) {
1891 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1893 list_for_each_entry(connector
,
1894 &dev
->mode_config
.connector_list
,
1896 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1899 if (put_user(connector
->base
.id
,
1900 connector_id
+ copied
)) {
1907 int start
= mode_group
->num_crtcs
+
1908 mode_group
->num_encoders
;
1909 for (i
= start
; i
< start
+ mode_group
->num_connectors
; i
++) {
1910 if (put_user(mode_group
->id_list
[i
],
1911 connector_id
+ copied
)) {
1919 card_res
->count_connectors
= connector_count
;
1921 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1922 card_res
->count_connectors
, card_res
->count_encoders
);
1925 mutex_unlock(&dev
->mode_config
.mutex
);
1930 * drm_mode_getcrtc - get CRTC configuration
1931 * @dev: drm device for the ioctl
1932 * @data: data pointer for the ioctl
1933 * @file_priv: drm file for the ioctl call
1935 * Construct a CRTC configuration structure to return to the user.
1937 * Called by the user via ioctl.
1940 * Zero on success, negative errno on failure.
1942 int drm_mode_getcrtc(struct drm_device
*dev
,
1943 void *data
, struct drm_file
*file_priv
)
1945 struct drm_mode_crtc
*crtc_resp
= data
;
1946 struct drm_crtc
*crtc
;
1948 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1951 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
1955 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
1956 crtc_resp
->x
= crtc
->x
;
1957 crtc_resp
->y
= crtc
->y
;
1958 crtc_resp
->gamma_size
= crtc
->gamma_size
;
1959 if (crtc
->primary
->fb
)
1960 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
1962 crtc_resp
->fb_id
= 0;
1964 if (crtc
->enabled
) {
1966 drm_crtc_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
1967 crtc_resp
->mode_valid
= 1;
1970 crtc_resp
->mode_valid
= 0;
1972 drm_modeset_unlock_crtc(crtc
);
1977 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1978 const struct drm_file
*file_priv
)
1981 * If user-space hasn't configured the driver to expose the stereo 3D
1982 * modes, don't expose them.
1984 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
1990 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
1992 /* For atomic drivers only state objects are synchronously updated and
1993 * protected by modeset locks, so check those first. */
1994 if (connector
->state
)
1995 return connector
->state
->best_encoder
;
1996 return connector
->encoder
;
2000 * drm_mode_getconnector - get connector configuration
2001 * @dev: drm device for the ioctl
2002 * @data: data pointer for the ioctl
2003 * @file_priv: drm file for the ioctl call
2005 * Construct a connector configuration structure to return to the user.
2007 * Called by the user via ioctl.
2010 * Zero on success, negative errno on failure.
2012 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
2013 struct drm_file
*file_priv
)
2015 struct drm_mode_get_connector
*out_resp
= data
;
2016 struct drm_connector
*connector
;
2017 struct drm_encoder
*encoder
;
2018 struct drm_display_mode
*mode
;
2020 int props_count
= 0;
2021 int encoders_count
= 0;
2025 struct drm_mode_modeinfo u_mode
;
2026 struct drm_mode_modeinfo __user
*mode_ptr
;
2027 uint32_t __user
*prop_ptr
;
2028 uint64_t __user
*prop_values
;
2029 uint32_t __user
*encoder_ptr
;
2031 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2034 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
2036 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
2038 mutex_lock(&dev
->mode_config
.mutex
);
2040 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
2046 props_count
= connector
->properties
.count
;
2048 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2049 if (connector
->encoder_ids
[i
] != 0) {
2054 if (out_resp
->count_modes
== 0) {
2055 connector
->funcs
->fill_modes(connector
,
2056 dev
->mode_config
.max_width
,
2057 dev
->mode_config
.max_height
);
2060 /* delayed so we get modes regardless of pre-fill_modes state */
2061 list_for_each_entry(mode
, &connector
->modes
, head
)
2062 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2065 out_resp
->connector_id
= connector
->base
.id
;
2066 out_resp
->connector_type
= connector
->connector_type
;
2067 out_resp
->connector_type_id
= connector
->connector_type_id
;
2068 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2069 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2070 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2071 out_resp
->connection
= connector
->status
;
2072 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2074 encoder
= drm_connector_get_encoder(connector
);
2076 out_resp
->encoder_id
= encoder
->base
.id
;
2078 out_resp
->encoder_id
= 0;
2079 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2082 * This ioctl is called twice, once to determine how much space is
2083 * needed, and the 2nd time to fill it.
2085 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2087 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2088 list_for_each_entry(mode
, &connector
->modes
, head
) {
2089 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2092 drm_crtc_convert_to_umode(&u_mode
, mode
);
2093 if (copy_to_user(mode_ptr
+ copied
,
2094 &u_mode
, sizeof(u_mode
))) {
2101 out_resp
->count_modes
= mode_count
;
2103 if ((out_resp
->count_props
>= props_count
) && props_count
) {
2105 prop_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
);
2106 prop_values
= (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
);
2107 for (i
= 0; i
< connector
->properties
.count
; i
++) {
2108 if (put_user(connector
->properties
.ids
[i
],
2109 prop_ptr
+ copied
)) {
2114 if (put_user(connector
->properties
.values
[i
],
2115 prop_values
+ copied
)) {
2122 out_resp
->count_props
= props_count
;
2124 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2126 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2127 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2128 if (connector
->encoder_ids
[i
] != 0) {
2129 if (put_user(connector
->encoder_ids
[i
],
2130 encoder_ptr
+ copied
)) {
2138 out_resp
->count_encoders
= encoders_count
;
2141 mutex_unlock(&dev
->mode_config
.mutex
);
2146 static struct drm_crtc
*drm_encoder_get_crtc(struct drm_encoder
*encoder
)
2148 struct drm_connector
*connector
;
2149 struct drm_device
*dev
= encoder
->dev
;
2150 bool uses_atomic
= false;
2152 /* For atomic drivers only state objects are synchronously updated and
2153 * protected by modeset locks, so check those first. */
2154 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
2155 if (!connector
->state
)
2160 if (connector
->state
->best_encoder
!= encoder
)
2163 return connector
->state
->crtc
;
2166 /* Don't return stale data (e.g. pending async disable). */
2170 return encoder
->crtc
;
2174 * drm_mode_getencoder - get encoder configuration
2175 * @dev: drm device for the ioctl
2176 * @data: data pointer for the ioctl
2177 * @file_priv: drm file for the ioctl call
2179 * Construct a encoder configuration structure to return to the user.
2181 * Called by the user via ioctl.
2184 * Zero on success, negative errno on failure.
2186 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2187 struct drm_file
*file_priv
)
2189 struct drm_mode_get_encoder
*enc_resp
= data
;
2190 struct drm_encoder
*encoder
;
2191 struct drm_crtc
*crtc
;
2193 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2196 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2200 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2201 crtc
= drm_encoder_get_crtc(encoder
);
2203 enc_resp
->crtc_id
= crtc
->base
.id
;
2204 else if (encoder
->crtc
)
2205 enc_resp
->crtc_id
= encoder
->crtc
->base
.id
;
2207 enc_resp
->crtc_id
= 0;
2208 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2210 enc_resp
->encoder_type
= encoder
->encoder_type
;
2211 enc_resp
->encoder_id
= encoder
->base
.id
;
2212 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2213 enc_resp
->possible_clones
= encoder
->possible_clones
;
2219 * drm_mode_getplane_res - enumerate all plane resources
2222 * @file_priv: DRM file info
2224 * Construct a list of plane ids to return to the user.
2226 * Called by the user via ioctl.
2229 * Zero on success, negative errno on failure.
2231 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2232 struct drm_file
*file_priv
)
2234 struct drm_mode_get_plane_res
*plane_resp
= data
;
2235 struct drm_mode_config
*config
;
2236 struct drm_plane
*plane
;
2237 uint32_t __user
*plane_ptr
;
2239 unsigned num_planes
;
2241 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2244 config
= &dev
->mode_config
;
2246 if (file_priv
->universal_planes
)
2247 num_planes
= config
->num_total_plane
;
2249 num_planes
= config
->num_overlay_plane
;
2252 * This ioctl is called twice, once to determine how much space is
2253 * needed, and the 2nd time to fill it.
2256 (plane_resp
->count_planes
>= num_planes
)) {
2257 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2259 /* Plane lists are invariant, no locking needed. */
2260 list_for_each_entry(plane
, &config
->plane_list
, head
) {
2262 * Unless userspace set the 'universal planes'
2263 * capability bit, only advertise overlays.
2265 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2266 !file_priv
->universal_planes
)
2269 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2274 plane_resp
->count_planes
= num_planes
;
2280 * drm_mode_getplane - get plane configuration
2283 * @file_priv: DRM file info
2285 * Construct a plane configuration structure to return to the user.
2287 * Called by the user via ioctl.
2290 * Zero on success, negative errno on failure.
2292 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2293 struct drm_file
*file_priv
)
2295 struct drm_mode_get_plane
*plane_resp
= data
;
2296 struct drm_plane
*plane
;
2297 uint32_t __user
*format_ptr
;
2299 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2302 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2306 drm_modeset_lock(&plane
->mutex
, NULL
);
2308 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2310 plane_resp
->crtc_id
= 0;
2313 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2315 plane_resp
->fb_id
= 0;
2316 drm_modeset_unlock(&plane
->mutex
);
2318 plane_resp
->plane_id
= plane
->base
.id
;
2319 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2320 plane_resp
->gamma_size
= 0;
2323 * This ioctl is called twice, once to determine how much space is
2324 * needed, and the 2nd time to fill it.
2326 if (plane
->format_count
&&
2327 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2328 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2329 if (copy_to_user(format_ptr
,
2330 plane
->format_types
,
2331 sizeof(uint32_t) * plane
->format_count
)) {
2335 plane_resp
->count_format_types
= plane
->format_count
;
2341 * setplane_internal - setplane handler for internal callers
2343 * Note that we assume an extra reference has already been taken on fb. If the
2344 * update fails, this reference will be dropped before return; if it succeeds,
2345 * the previous framebuffer (if any) will be unreferenced instead.
2347 * src_{x,y,w,h} are provided in 16.16 fixed point format
2349 static int __setplane_internal(struct drm_plane
*plane
,
2350 struct drm_crtc
*crtc
,
2351 struct drm_framebuffer
*fb
,
2352 int32_t crtc_x
, int32_t crtc_y
,
2353 uint32_t crtc_w
, uint32_t crtc_h
,
2354 /* src_{x,y,w,h} values are 16.16 fixed point */
2355 uint32_t src_x
, uint32_t src_y
,
2356 uint32_t src_w
, uint32_t src_h
)
2359 unsigned int fb_width
, fb_height
;
2362 /* No fb means shut it down */
2364 plane
->old_fb
= plane
->fb
;
2365 ret
= plane
->funcs
->disable_plane(plane
);
2370 plane
->old_fb
= NULL
;
2375 /* Check whether this plane is usable on this CRTC */
2376 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2377 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2382 /* Check whether this plane supports the fb pixel format. */
2383 for (i
= 0; i
< plane
->format_count
; i
++)
2384 if (fb
->pixel_format
== plane
->format_types
[i
])
2386 if (i
== plane
->format_count
) {
2387 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2388 drm_get_format_name(fb
->pixel_format
));
2393 fb_width
= fb
->width
<< 16;
2394 fb_height
= fb
->height
<< 16;
2396 /* Make sure source coordinates are inside the fb. */
2397 if (src_w
> fb_width
||
2398 src_x
> fb_width
- src_w
||
2399 src_h
> fb_height
||
2400 src_y
> fb_height
- src_h
) {
2401 DRM_DEBUG_KMS("Invalid source coordinates "
2402 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2403 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2404 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2405 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2406 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2411 plane
->old_fb
= plane
->fb
;
2412 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2413 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2414 src_x
, src_y
, src_w
, src_h
);
2420 plane
->old_fb
= NULL
;
2425 drm_framebuffer_unreference(fb
);
2427 drm_framebuffer_unreference(plane
->old_fb
);
2428 plane
->old_fb
= NULL
;
2433 static int setplane_internal(struct drm_plane
*plane
,
2434 struct drm_crtc
*crtc
,
2435 struct drm_framebuffer
*fb
,
2436 int32_t crtc_x
, int32_t crtc_y
,
2437 uint32_t crtc_w
, uint32_t crtc_h
,
2438 /* src_{x,y,w,h} values are 16.16 fixed point */
2439 uint32_t src_x
, uint32_t src_y
,
2440 uint32_t src_w
, uint32_t src_h
)
2444 drm_modeset_lock_all(plane
->dev
);
2445 ret
= __setplane_internal(plane
, crtc
, fb
,
2446 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2447 src_x
, src_y
, src_w
, src_h
);
2448 drm_modeset_unlock_all(plane
->dev
);
2454 * drm_mode_setplane - configure a plane's configuration
2456 * @data: ioctl data*
2457 * @file_priv: DRM file info
2459 * Set plane configuration, including placement, fb, scaling, and other factors.
2460 * Or pass a NULL fb to disable (planes may be disabled without providing a
2464 * Zero on success, negative errno on failure.
2466 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2467 struct drm_file
*file_priv
)
2469 struct drm_mode_set_plane
*plane_req
= data
;
2470 struct drm_plane
*plane
;
2471 struct drm_crtc
*crtc
= NULL
;
2472 struct drm_framebuffer
*fb
= NULL
;
2474 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2477 /* Give drivers some help against integer overflows */
2478 if (plane_req
->crtc_w
> INT_MAX
||
2479 plane_req
->crtc_x
> INT_MAX
- (int32_t) plane_req
->crtc_w
||
2480 plane_req
->crtc_h
> INT_MAX
||
2481 plane_req
->crtc_y
> INT_MAX
- (int32_t) plane_req
->crtc_h
) {
2482 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2483 plane_req
->crtc_w
, plane_req
->crtc_h
,
2484 plane_req
->crtc_x
, plane_req
->crtc_y
);
2489 * First, find the plane, crtc, and fb objects. If not available,
2490 * we don't bother to call the driver.
2492 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
2494 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2495 plane_req
->plane_id
);
2499 if (plane_req
->fb_id
) {
2500 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2502 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2507 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
2509 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2510 plane_req
->crtc_id
);
2516 * setplane_internal will take care of deref'ing either the old or new
2517 * framebuffer depending on success.
2519 return setplane_internal(plane
, crtc
, fb
,
2520 plane_req
->crtc_x
, plane_req
->crtc_y
,
2521 plane_req
->crtc_w
, plane_req
->crtc_h
,
2522 plane_req
->src_x
, plane_req
->src_y
,
2523 plane_req
->src_w
, plane_req
->src_h
);
2527 * drm_mode_set_config_internal - helper to call ->set_config
2528 * @set: modeset config to set
2530 * This is a little helper to wrap internal calls to the ->set_config driver
2531 * interface. The only thing it adds is correct refcounting dance.
2534 * Zero on success, negative errno on failure.
2536 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2538 struct drm_crtc
*crtc
= set
->crtc
;
2539 struct drm_framebuffer
*fb
;
2540 struct drm_crtc
*tmp
;
2544 * NOTE: ->set_config can also disable other crtcs (if we steal all
2545 * connectors from it), hence we need to refcount the fbs across all
2546 * crtcs. Atomic modeset will have saner semantics ...
2548 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
)
2549 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2553 ret
= crtc
->funcs
->set_config(set
);
2555 crtc
->primary
->crtc
= crtc
;
2556 crtc
->primary
->fb
= fb
;
2559 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
2560 if (tmp
->primary
->fb
)
2561 drm_framebuffer_reference(tmp
->primary
->fb
);
2562 if (tmp
->primary
->old_fb
)
2563 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2564 tmp
->primary
->old_fb
= NULL
;
2569 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2572 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2574 * @crtc: CRTC that framebuffer will be displayed on
2577 * @mode: mode that framebuffer will be displayed under
2578 * @fb: framebuffer to check size of
2580 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2582 const struct drm_display_mode
*mode
,
2583 const struct drm_framebuffer
*fb
)
2586 int hdisplay
, vdisplay
;
2588 hdisplay
= mode
->hdisplay
;
2589 vdisplay
= mode
->vdisplay
;
2591 if (drm_mode_is_stereo(mode
)) {
2592 struct drm_display_mode adjusted
= *mode
;
2594 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE
);
2595 hdisplay
= adjusted
.crtc_hdisplay
;
2596 vdisplay
= adjusted
.crtc_vdisplay
;
2599 if (crtc
->invert_dimensions
)
2600 swap(hdisplay
, vdisplay
);
2602 if (hdisplay
> fb
->width
||
2603 vdisplay
> fb
->height
||
2604 x
> fb
->width
- hdisplay
||
2605 y
> fb
->height
- vdisplay
) {
2606 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2607 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2608 crtc
->invert_dimensions
? " (inverted)" : "");
2614 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2617 * drm_mode_setcrtc - set CRTC configuration
2618 * @dev: drm device for the ioctl
2619 * @data: data pointer for the ioctl
2620 * @file_priv: drm file for the ioctl call
2622 * Build a new CRTC configuration based on user request.
2624 * Called by the user via ioctl.
2627 * Zero on success, negative errno on failure.
2629 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2630 struct drm_file
*file_priv
)
2632 struct drm_mode_config
*config
= &dev
->mode_config
;
2633 struct drm_mode_crtc
*crtc_req
= data
;
2634 struct drm_crtc
*crtc
;
2635 struct drm_connector
**connector_set
= NULL
, *connector
;
2636 struct drm_framebuffer
*fb
= NULL
;
2637 struct drm_display_mode
*mode
= NULL
;
2638 struct drm_mode_set set
;
2639 uint32_t __user
*set_connectors_ptr
;
2643 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2646 /* For some reason crtc x/y offsets are signed internally. */
2647 if (crtc_req
->x
> INT_MAX
|| crtc_req
->y
> INT_MAX
)
2650 drm_modeset_lock_all(dev
);
2651 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2653 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2657 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2659 if (crtc_req
->mode_valid
) {
2660 /* If we have a mode we need a framebuffer. */
2661 /* If we pass -1, set the mode with the currently bound fb */
2662 if (crtc_req
->fb_id
== -1) {
2663 if (!crtc
->primary
->fb
) {
2664 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2668 fb
= crtc
->primary
->fb
;
2669 /* Make refcounting symmetric with the lookup path. */
2670 drm_framebuffer_reference(fb
);
2672 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2674 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2681 mode
= drm_mode_create(dev
);
2687 ret
= drm_crtc_convert_umode(mode
, &crtc_req
->mode
);
2689 DRM_DEBUG_KMS("Invalid mode\n");
2693 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2695 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2702 if (crtc_req
->count_connectors
== 0 && mode
) {
2703 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2708 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2709 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2710 crtc_req
->count_connectors
);
2715 if (crtc_req
->count_connectors
> 0) {
2718 /* Avoid unbounded kernel memory allocation */
2719 if (crtc_req
->count_connectors
> config
->num_connector
) {
2724 connector_set
= kmalloc(crtc_req
->count_connectors
*
2725 sizeof(struct drm_connector
*),
2727 if (!connector_set
) {
2732 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2733 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2734 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2739 connector
= drm_connector_find(dev
, out_id
);
2741 DRM_DEBUG_KMS("Connector id %d unknown\n",
2746 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2750 connector_set
[i
] = connector
;
2755 set
.x
= crtc_req
->x
;
2756 set
.y
= crtc_req
->y
;
2758 set
.connectors
= connector_set
;
2759 set
.num_connectors
= crtc_req
->count_connectors
;
2761 ret
= drm_mode_set_config_internal(&set
);
2765 drm_framebuffer_unreference(fb
);
2767 kfree(connector_set
);
2768 drm_mode_destroy(dev
, mode
);
2769 drm_modeset_unlock_all(dev
);
2774 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2775 * universal plane handler call
2776 * @crtc: crtc to update cursor for
2777 * @req: data pointer for the ioctl
2778 * @file_priv: drm file for the ioctl call
2780 * Legacy cursor ioctl's work directly with driver buffer handles. To
2781 * translate legacy ioctl calls into universal plane handler calls, we need to
2782 * wrap the native buffer handle in a drm_framebuffer.
2784 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2785 * buffer with a pitch of 4*width; the universal plane interface should be used
2786 * directly in cases where the hardware can support other buffer settings and
2787 * userspace wants to make use of these capabilities.
2790 * Zero on success, negative errno on failure.
2792 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2793 struct drm_mode_cursor2
*req
,
2794 struct drm_file
*file_priv
)
2796 struct drm_device
*dev
= crtc
->dev
;
2797 struct drm_framebuffer
*fb
= NULL
;
2798 struct drm_mode_fb_cmd2 fbreq
= {
2799 .width
= req
->width
,
2800 .height
= req
->height
,
2801 .pixel_format
= DRM_FORMAT_ARGB8888
,
2802 .pitches
= { req
->width
* 4 },
2803 .handles
= { req
->handle
},
2805 int32_t crtc_x
, crtc_y
;
2806 uint32_t crtc_w
= 0, crtc_h
= 0;
2807 uint32_t src_w
= 0, src_h
= 0;
2810 BUG_ON(!crtc
->cursor
);
2811 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2814 * Obtain fb we'll be using (either new or existing) and take an extra
2815 * reference to it if fb != null. setplane will take care of dropping
2816 * the reference if the plane update fails.
2818 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2820 fb
= add_framebuffer_internal(dev
, &fbreq
, file_priv
);
2822 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2826 drm_framebuffer_reference(fb
);
2831 fb
= crtc
->cursor
->fb
;
2833 drm_framebuffer_reference(fb
);
2836 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2840 crtc_x
= crtc
->cursor_x
;
2841 crtc_y
= crtc
->cursor_y
;
2846 crtc_h
= fb
->height
;
2847 src_w
= fb
->width
<< 16;
2848 src_h
= fb
->height
<< 16;
2852 * setplane_internal will take care of deref'ing either the old or new
2853 * framebuffer depending on success.
2855 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2856 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2857 0, 0, src_w
, src_h
);
2859 /* Update successful; save new cursor position, if necessary */
2860 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2861 crtc
->cursor_x
= req
->x
;
2862 crtc
->cursor_y
= req
->y
;
2868 static int drm_mode_cursor_common(struct drm_device
*dev
,
2869 struct drm_mode_cursor2
*req
,
2870 struct drm_file
*file_priv
)
2872 struct drm_crtc
*crtc
;
2875 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2878 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2881 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2883 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2888 * If this crtc has a universal cursor plane, call that plane's update
2889 * handler rather than using legacy cursor handlers.
2891 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
2893 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2897 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2898 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2902 /* Turns off the cursor if handle is 0 */
2903 if (crtc
->funcs
->cursor_set2
)
2904 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2905 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2907 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2908 req
->width
, req
->height
);
2911 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2912 if (crtc
->funcs
->cursor_move
) {
2913 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
2920 drm_modeset_unlock_crtc(crtc
);
2928 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2929 * @dev: drm device for the ioctl
2930 * @data: data pointer for the ioctl
2931 * @file_priv: drm file for the ioctl call
2933 * Set the cursor configuration based on user request.
2935 * Called by the user via ioctl.
2938 * Zero on success, negative errno on failure.
2940 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
2941 void *data
, struct drm_file
*file_priv
)
2943 struct drm_mode_cursor
*req
= data
;
2944 struct drm_mode_cursor2 new_req
;
2946 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
2947 new_req
.hot_x
= new_req
.hot_y
= 0;
2949 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
2953 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2954 * @dev: drm device for the ioctl
2955 * @data: data pointer for the ioctl
2956 * @file_priv: drm file for the ioctl call
2958 * Set the cursor configuration based on user request. This implements the 2nd
2959 * version of the cursor ioctl, which allows userspace to additionally specify
2960 * the hotspot of the pointer.
2962 * Called by the user via ioctl.
2965 * Zero on success, negative errno on failure.
2967 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
2968 void *data
, struct drm_file
*file_priv
)
2970 struct drm_mode_cursor2
*req
= data
;
2971 return drm_mode_cursor_common(dev
, req
, file_priv
);
2975 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2976 * @bpp: bits per pixels
2977 * @depth: bit depth per pixel
2979 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2980 * Useful in fbdev emulation code, since that deals in those values.
2982 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
2988 fmt
= DRM_FORMAT_C8
;
2992 fmt
= DRM_FORMAT_XRGB1555
;
2994 fmt
= DRM_FORMAT_RGB565
;
2997 fmt
= DRM_FORMAT_RGB888
;
3001 fmt
= DRM_FORMAT_XRGB8888
;
3002 else if (depth
== 30)
3003 fmt
= DRM_FORMAT_XRGB2101010
;
3005 fmt
= DRM_FORMAT_ARGB8888
;
3008 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3009 fmt
= DRM_FORMAT_XRGB8888
;
3015 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
3018 * drm_mode_addfb - add an FB to the graphics configuration
3019 * @dev: drm device for the ioctl
3020 * @data: data pointer for the ioctl
3021 * @file_priv: drm file for the ioctl call
3023 * Add a new FB to the specified CRTC, given a user request. This is the
3024 * original addfb ioctl which only supported RGB formats.
3026 * Called by the user via ioctl.
3029 * Zero on success, negative errno on failure.
3031 int drm_mode_addfb(struct drm_device
*dev
,
3032 void *data
, struct drm_file
*file_priv
)
3034 struct drm_mode_fb_cmd
*or = data
;
3035 struct drm_mode_fb_cmd2 r
= {};
3038 /* convert to new format and call new ioctl */
3039 r
.fb_id
= or->fb_id
;
3040 r
.width
= or->width
;
3041 r
.height
= or->height
;
3042 r
.pitches
[0] = or->pitch
;
3043 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
3044 r
.handles
[0] = or->handle
;
3046 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
3050 or->fb_id
= r
.fb_id
;
3055 static int format_check(const struct drm_mode_fb_cmd2
*r
)
3057 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3061 case DRM_FORMAT_RGB332
:
3062 case DRM_FORMAT_BGR233
:
3063 case DRM_FORMAT_XRGB4444
:
3064 case DRM_FORMAT_XBGR4444
:
3065 case DRM_FORMAT_RGBX4444
:
3066 case DRM_FORMAT_BGRX4444
:
3067 case DRM_FORMAT_ARGB4444
:
3068 case DRM_FORMAT_ABGR4444
:
3069 case DRM_FORMAT_RGBA4444
:
3070 case DRM_FORMAT_BGRA4444
:
3071 case DRM_FORMAT_XRGB1555
:
3072 case DRM_FORMAT_XBGR1555
:
3073 case DRM_FORMAT_RGBX5551
:
3074 case DRM_FORMAT_BGRX5551
:
3075 case DRM_FORMAT_ARGB1555
:
3076 case DRM_FORMAT_ABGR1555
:
3077 case DRM_FORMAT_RGBA5551
:
3078 case DRM_FORMAT_BGRA5551
:
3079 case DRM_FORMAT_RGB565
:
3080 case DRM_FORMAT_BGR565
:
3081 case DRM_FORMAT_RGB888
:
3082 case DRM_FORMAT_BGR888
:
3083 case DRM_FORMAT_XRGB8888
:
3084 case DRM_FORMAT_XBGR8888
:
3085 case DRM_FORMAT_RGBX8888
:
3086 case DRM_FORMAT_BGRX8888
:
3087 case DRM_FORMAT_ARGB8888
:
3088 case DRM_FORMAT_ABGR8888
:
3089 case DRM_FORMAT_RGBA8888
:
3090 case DRM_FORMAT_BGRA8888
:
3091 case DRM_FORMAT_XRGB2101010
:
3092 case DRM_FORMAT_XBGR2101010
:
3093 case DRM_FORMAT_RGBX1010102
:
3094 case DRM_FORMAT_BGRX1010102
:
3095 case DRM_FORMAT_ARGB2101010
:
3096 case DRM_FORMAT_ABGR2101010
:
3097 case DRM_FORMAT_RGBA1010102
:
3098 case DRM_FORMAT_BGRA1010102
:
3099 case DRM_FORMAT_YUYV
:
3100 case DRM_FORMAT_YVYU
:
3101 case DRM_FORMAT_UYVY
:
3102 case DRM_FORMAT_VYUY
:
3103 case DRM_FORMAT_AYUV
:
3104 case DRM_FORMAT_NV12
:
3105 case DRM_FORMAT_NV21
:
3106 case DRM_FORMAT_NV16
:
3107 case DRM_FORMAT_NV61
:
3108 case DRM_FORMAT_NV24
:
3109 case DRM_FORMAT_NV42
:
3110 case DRM_FORMAT_YUV410
:
3111 case DRM_FORMAT_YVU410
:
3112 case DRM_FORMAT_YUV411
:
3113 case DRM_FORMAT_YVU411
:
3114 case DRM_FORMAT_YUV420
:
3115 case DRM_FORMAT_YVU420
:
3116 case DRM_FORMAT_YUV422
:
3117 case DRM_FORMAT_YVU422
:
3118 case DRM_FORMAT_YUV444
:
3119 case DRM_FORMAT_YVU444
:
3122 DRM_DEBUG_KMS("invalid pixel format %s\n",
3123 drm_get_format_name(r
->pixel_format
));
3128 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3130 int ret
, hsub
, vsub
, num_planes
, i
;
3132 ret
= format_check(r
);
3134 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3135 drm_get_format_name(r
->pixel_format
));
3139 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3140 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3141 num_planes
= drm_format_num_planes(r
->pixel_format
);
3143 if (r
->width
== 0 || r
->width
% hsub
) {
3144 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3148 if (r
->height
== 0 || r
->height
% vsub
) {
3149 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3153 for (i
= 0; i
< num_planes
; i
++) {
3154 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3155 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3156 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3158 if (!r
->handles
[i
]) {
3159 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3163 if ((uint64_t) width
* cpp
> UINT_MAX
)
3166 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3169 if (r
->pitches
[i
] < width
* cpp
) {
3170 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3178 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
3179 struct drm_mode_fb_cmd2
*r
,
3180 struct drm_file
*file_priv
)
3182 struct drm_mode_config
*config
= &dev
->mode_config
;
3183 struct drm_framebuffer
*fb
;
3186 if (r
->flags
& ~DRM_MODE_FB_INTERLACED
) {
3187 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3188 return ERR_PTR(-EINVAL
);
3191 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3192 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3193 r
->width
, config
->min_width
, config
->max_width
);
3194 return ERR_PTR(-EINVAL
);
3196 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3197 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3198 r
->height
, config
->min_height
, config
->max_height
);
3199 return ERR_PTR(-EINVAL
);
3202 ret
= framebuffer_check(r
);
3204 return ERR_PTR(ret
);
3206 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3208 DRM_DEBUG_KMS("could not create framebuffer\n");
3212 mutex_lock(&file_priv
->fbs_lock
);
3213 r
->fb_id
= fb
->base
.id
;
3214 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3215 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3216 mutex_unlock(&file_priv
->fbs_lock
);
3222 * drm_mode_addfb2 - add an FB to the graphics configuration
3223 * @dev: drm device for the ioctl
3224 * @data: data pointer for the ioctl
3225 * @file_priv: drm file for the ioctl call
3227 * Add a new FB to the specified CRTC, given a user request with format. This is
3228 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3229 * and uses fourcc codes as pixel format specifiers.
3231 * Called by the user via ioctl.
3234 * Zero on success, negative errno on failure.
3236 int drm_mode_addfb2(struct drm_device
*dev
,
3237 void *data
, struct drm_file
*file_priv
)
3239 struct drm_framebuffer
*fb
;
3241 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3244 fb
= add_framebuffer_internal(dev
, data
, file_priv
);
3252 * drm_mode_rmfb - remove an FB from the configuration
3253 * @dev: drm device for the ioctl
3254 * @data: data pointer for the ioctl
3255 * @file_priv: drm file for the ioctl call
3257 * Remove the FB specified by the user.
3259 * Called by the user via ioctl.
3262 * Zero on success, negative errno on failure.
3264 int drm_mode_rmfb(struct drm_device
*dev
,
3265 void *data
, struct drm_file
*file_priv
)
3267 struct drm_framebuffer
*fb
= NULL
;
3268 struct drm_framebuffer
*fbl
= NULL
;
3269 uint32_t *id
= data
;
3272 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3275 mutex_lock(&file_priv
->fbs_lock
);
3276 mutex_lock(&dev
->mode_config
.fb_lock
);
3277 fb
= __drm_framebuffer_lookup(dev
, *id
);
3281 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3287 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3288 __drm_framebuffer_unregister(dev
, fb
);
3290 list_del_init(&fb
->filp_head
);
3291 mutex_unlock(&dev
->mode_config
.fb_lock
);
3292 mutex_unlock(&file_priv
->fbs_lock
);
3294 drm_framebuffer_remove(fb
);
3299 mutex_unlock(&dev
->mode_config
.fb_lock
);
3300 mutex_unlock(&file_priv
->fbs_lock
);
3306 * drm_mode_getfb - get FB info
3307 * @dev: drm device for the ioctl
3308 * @data: data pointer for the ioctl
3309 * @file_priv: drm file for the ioctl call
3311 * Lookup the FB given its ID and return info about it.
3313 * Called by the user via ioctl.
3316 * Zero on success, negative errno on failure.
3318 int drm_mode_getfb(struct drm_device
*dev
,
3319 void *data
, struct drm_file
*file_priv
)
3321 struct drm_mode_fb_cmd
*r
= data
;
3322 struct drm_framebuffer
*fb
;
3325 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3328 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3332 r
->height
= fb
->height
;
3333 r
->width
= fb
->width
;
3334 r
->depth
= fb
->depth
;
3335 r
->bpp
= fb
->bits_per_pixel
;
3336 r
->pitch
= fb
->pitches
[0];
3337 if (fb
->funcs
->create_handle
) {
3338 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3339 drm_is_control_client(file_priv
)) {
3340 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3343 /* GET_FB() is an unprivileged ioctl so we must not
3344 * return a buffer-handle to non-master processes! For
3345 * backwards-compatibility reasons, we cannot make
3346 * GET_FB() privileged, so just return an invalid handle
3347 * for non-masters. */
3355 drm_framebuffer_unreference(fb
);
3361 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3362 * @dev: drm device for the ioctl
3363 * @data: data pointer for the ioctl
3364 * @file_priv: drm file for the ioctl call
3366 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3367 * rectangle list. Generic userspace which does frontbuffer rendering must call
3368 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3369 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3371 * Modesetting drivers which always update the frontbuffer do not need to
3372 * implement the corresponding ->dirty framebuffer callback.
3374 * Called by the user via ioctl.
3377 * Zero on success, negative errno on failure.
3379 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3380 void *data
, struct drm_file
*file_priv
)
3382 struct drm_clip_rect __user
*clips_ptr
;
3383 struct drm_clip_rect
*clips
= NULL
;
3384 struct drm_mode_fb_dirty_cmd
*r
= data
;
3385 struct drm_framebuffer
*fb
;
3390 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3393 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3397 num_clips
= r
->num_clips
;
3398 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3400 if (!num_clips
!= !clips_ptr
) {
3405 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3407 /* If userspace annotates copy, clips must come in pairs */
3408 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3413 if (num_clips
&& clips_ptr
) {
3414 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3418 clips
= kzalloc(num_clips
* sizeof(*clips
), GFP_KERNEL
);
3424 ret
= copy_from_user(clips
, clips_ptr
,
3425 num_clips
* sizeof(*clips
));
3432 if (fb
->funcs
->dirty
) {
3433 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3442 drm_framebuffer_unreference(fb
);
3449 * drm_fb_release - remove and free the FBs on this file
3450 * @priv: drm file for the ioctl
3452 * Destroy all the FBs associated with @filp.
3454 * Called by the user via ioctl.
3457 * Zero on success, negative errno on failure.
3459 void drm_fb_release(struct drm_file
*priv
)
3461 struct drm_device
*dev
= priv
->minor
->dev
;
3462 struct drm_framebuffer
*fb
, *tfb
;
3465 * When the file gets released that means no one else can access the fb
3466 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3467 * avoid upsetting lockdep since the universal cursor code adds a
3468 * framebuffer while holding mutex locks.
3470 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3471 * locks is impossible here since no one else but this function can get
3474 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3476 mutex_lock(&dev
->mode_config
.fb_lock
);
3477 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3478 __drm_framebuffer_unregister(dev
, fb
);
3479 mutex_unlock(&dev
->mode_config
.fb_lock
);
3481 list_del_init(&fb
->filp_head
);
3483 /* This will also drop the fpriv->fbs reference. */
3484 drm_framebuffer_remove(fb
);
3489 * drm_property_create - create a new property type
3491 * @flags: flags specifying the property type
3492 * @name: name of the property
3493 * @num_values: number of pre-defined values
3495 * This creates a new generic drm property which can then be attached to a drm
3496 * object with drm_object_attach_property. The returned property object must be
3497 * freed with drm_property_destroy.
3499 * Note that the DRM core keeps a per-device list of properties and that, if
3500 * drm_mode_config_cleanup() is called, it will destroy all properties created
3504 * A pointer to the newly created property on success, NULL on failure.
3506 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3507 const char *name
, int num_values
)
3509 struct drm_property
*property
= NULL
;
3512 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3516 property
->dev
= dev
;
3519 property
->values
= kzalloc(sizeof(uint64_t)*num_values
, GFP_KERNEL
);
3520 if (!property
->values
)
3524 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3528 property
->flags
= flags
;
3529 property
->num_values
= num_values
;
3530 INIT_LIST_HEAD(&property
->enum_list
);
3533 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3534 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3537 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3539 WARN_ON(!drm_property_type_valid(property
));
3543 kfree(property
->values
);
3547 EXPORT_SYMBOL(drm_property_create
);
3550 * drm_property_create_enum - create a new enumeration property type
3552 * @flags: flags specifying the property type
3553 * @name: name of the property
3554 * @props: enumeration lists with property values
3555 * @num_values: number of pre-defined values
3557 * This creates a new generic drm property which can then be attached to a drm
3558 * object with drm_object_attach_property. The returned property object must be
3559 * freed with drm_property_destroy.
3561 * Userspace is only allowed to set one of the predefined values for enumeration
3565 * A pointer to the newly created property on success, NULL on failure.
3567 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3569 const struct drm_prop_enum_list
*props
,
3572 struct drm_property
*property
;
3575 flags
|= DRM_MODE_PROP_ENUM
;
3577 property
= drm_property_create(dev
, flags
, name
, num_values
);
3581 for (i
= 0; i
< num_values
; i
++) {
3582 ret
= drm_property_add_enum(property
, i
,
3586 drm_property_destroy(dev
, property
);
3593 EXPORT_SYMBOL(drm_property_create_enum
);
3596 * drm_property_create_bitmask - create a new bitmask property type
3598 * @flags: flags specifying the property type
3599 * @name: name of the property
3600 * @props: enumeration lists with property bitflags
3601 * @num_props: size of the @props array
3602 * @supported_bits: bitmask of all supported enumeration values
3604 * This creates a new bitmask drm property which can then be attached to a drm
3605 * object with drm_object_attach_property. The returned property object must be
3606 * freed with drm_property_destroy.
3608 * Compared to plain enumeration properties userspace is allowed to set any
3609 * or'ed together combination of the predefined property bitflag values
3612 * A pointer to the newly created property on success, NULL on failure.
3614 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3615 int flags
, const char *name
,
3616 const struct drm_prop_enum_list
*props
,
3618 uint64_t supported_bits
)
3620 struct drm_property
*property
;
3621 int i
, ret
, index
= 0;
3622 int num_values
= hweight64(supported_bits
);
3624 flags
|= DRM_MODE_PROP_BITMASK
;
3626 property
= drm_property_create(dev
, flags
, name
, num_values
);
3629 for (i
= 0; i
< num_props
; i
++) {
3630 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3633 if (WARN_ON(index
>= num_values
)) {
3634 drm_property_destroy(dev
, property
);
3638 ret
= drm_property_add_enum(property
, index
++,
3642 drm_property_destroy(dev
, property
);
3649 EXPORT_SYMBOL(drm_property_create_bitmask
);
3651 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3652 int flags
, const char *name
,
3653 uint64_t min
, uint64_t max
)
3655 struct drm_property
*property
;
3657 property
= drm_property_create(dev
, flags
, name
, 2);
3661 property
->values
[0] = min
;
3662 property
->values
[1] = max
;
3668 * drm_property_create_range - create a new ranged property type
3670 * @flags: flags specifying the property type
3671 * @name: name of the property
3672 * @min: minimum value of the property
3673 * @max: maximum value of the property
3675 * This creates a new generic drm property which can then be attached to a drm
3676 * object with drm_object_attach_property. The returned property object must be
3677 * freed with drm_property_destroy.
3679 * Userspace is allowed to set any integer value in the (min, max) range
3683 * A pointer to the newly created property on success, NULL on failure.
3685 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3687 uint64_t min
, uint64_t max
)
3689 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3692 EXPORT_SYMBOL(drm_property_create_range
);
3694 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3695 int flags
, const char *name
,
3696 int64_t min
, int64_t max
)
3698 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3699 name
, I642U64(min
), I642U64(max
));
3701 EXPORT_SYMBOL(drm_property_create_signed_range
);
3703 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3704 int flags
, const char *name
, uint32_t type
)
3706 struct drm_property
*property
;
3708 flags
|= DRM_MODE_PROP_OBJECT
;
3710 property
= drm_property_create(dev
, flags
, name
, 1);
3714 property
->values
[0] = type
;
3718 EXPORT_SYMBOL(drm_property_create_object
);
3721 * drm_property_add_enum - add a possible value to an enumeration property
3722 * @property: enumeration property to change
3723 * @index: index of the new enumeration
3724 * @value: value of the new enumeration
3725 * @name: symbolic name of the new enumeration
3727 * This functions adds enumerations to a property.
3729 * It's use is deprecated, drivers should use one of the more specific helpers
3730 * to directly create the property with all enumerations already attached.
3733 * Zero on success, error code on failure.
3735 int drm_property_add_enum(struct drm_property
*property
, int index
,
3736 uint64_t value
, const char *name
)
3738 struct drm_property_enum
*prop_enum
;
3740 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3741 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3745 * Bitmask enum properties have the additional constraint of values
3748 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3752 if (!list_empty(&property
->enum_list
)) {
3753 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3754 if (prop_enum
->value
== value
) {
3755 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3756 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3762 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3766 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3767 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3768 prop_enum
->value
= value
;
3770 property
->values
[index
] = value
;
3771 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
3774 EXPORT_SYMBOL(drm_property_add_enum
);
3777 * drm_property_destroy - destroy a drm property
3779 * @property: property to destry
3781 * This function frees a property including any attached resources like
3782 * enumeration values.
3784 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3786 struct drm_property_enum
*prop_enum
, *pt
;
3788 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
3789 list_del(&prop_enum
->head
);
3793 if (property
->num_values
)
3794 kfree(property
->values
);
3795 drm_mode_object_put(dev
, &property
->base
);
3796 list_del(&property
->head
);
3799 EXPORT_SYMBOL(drm_property_destroy
);
3802 * drm_object_attach_property - attach a property to a modeset object
3803 * @obj: drm modeset object
3804 * @property: property to attach
3805 * @init_val: initial value of the property
3807 * This attaches the given property to the modeset object with the given initial
3808 * value. Currently this function cannot fail since the properties are stored in
3809 * a statically sized array.
3811 void drm_object_attach_property(struct drm_mode_object
*obj
,
3812 struct drm_property
*property
,
3815 int count
= obj
->properties
->count
;
3817 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3818 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3819 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3820 "you see this message on the same object type.\n",
3825 obj
->properties
->ids
[count
] = property
->base
.id
;
3826 obj
->properties
->values
[count
] = init_val
;
3827 obj
->properties
->count
++;
3829 EXPORT_SYMBOL(drm_object_attach_property
);
3832 * drm_object_property_set_value - set the value of a property
3833 * @obj: drm mode object to set property value for
3834 * @property: property to set
3835 * @val: value the property should be set to
3837 * This functions sets a given property on a given object. This function only
3838 * changes the software state of the property, it does not call into the
3839 * driver's ->set_property callback.
3842 * Zero on success, error code on failure.
3844 int drm_object_property_set_value(struct drm_mode_object
*obj
,
3845 struct drm_property
*property
, uint64_t val
)
3849 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3850 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3851 obj
->properties
->values
[i
] = val
;
3858 EXPORT_SYMBOL(drm_object_property_set_value
);
3861 * drm_object_property_get_value - retrieve the value of a property
3862 * @obj: drm mode object to get property value from
3863 * @property: property to retrieve
3864 * @val: storage for the property value
3866 * This function retrieves the softare state of the given property for the given
3867 * property. Since there is no driver callback to retrieve the current property
3868 * value this might be out of sync with the hardware, depending upon the driver
3872 * Zero on success, error code on failure.
3874 int drm_object_property_get_value(struct drm_mode_object
*obj
,
3875 struct drm_property
*property
, uint64_t *val
)
3879 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3880 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3881 *val
= obj
->properties
->values
[i
];
3888 EXPORT_SYMBOL(drm_object_property_get_value
);
3891 * drm_mode_getproperty_ioctl - get the property metadata
3894 * @file_priv: DRM file info
3896 * This function retrieves the metadata for a given property, like the different
3897 * possible values for an enum property or the limits for a range property.
3899 * Blob properties are special
3901 * Called by the user via ioctl.
3904 * Zero on success, negative errno on failure.
3906 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
3907 void *data
, struct drm_file
*file_priv
)
3909 struct drm_mode_get_property
*out_resp
= data
;
3910 struct drm_property
*property
;
3912 int value_count
= 0;
3915 struct drm_property_enum
*prop_enum
;
3916 struct drm_mode_property_enum __user
*enum_ptr
;
3917 uint64_t __user
*values_ptr
;
3919 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3922 drm_modeset_lock_all(dev
);
3923 property
= drm_property_find(dev
, out_resp
->prop_id
);
3929 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3930 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3931 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
3935 value_count
= property
->num_values
;
3937 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
3938 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
3939 out_resp
->flags
= property
->flags
;
3941 if ((out_resp
->count_values
>= value_count
) && value_count
) {
3942 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
3943 for (i
= 0; i
< value_count
; i
++) {
3944 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
3950 out_resp
->count_values
= value_count
;
3952 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3953 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3954 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
3956 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
3957 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3959 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
3964 if (copy_to_user(&enum_ptr
[copied
].name
,
3965 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
3972 out_resp
->count_enum_blobs
= enum_count
;
3976 * NOTE: The idea seems to have been to use this to read all the blob
3977 * property values. But nothing ever added them to the corresponding
3978 * list, userspace always used the special-purpose get_blob ioctl to
3979 * read the value for a blob property. It also doesn't make a lot of
3980 * sense to return values here when everything else is just metadata for
3981 * the property itself.
3983 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
3984 out_resp
->count_enum_blobs
= 0;
3986 drm_modeset_unlock_all(dev
);
3990 static struct drm_property_blob
*
3991 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
3994 struct drm_property_blob
*blob
;
3997 if (!length
|| !data
)
4000 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
4004 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
4010 blob
->length
= length
;
4012 memcpy(blob
->data
, data
, length
);
4014 list_add_tail(&blob
->head
, &dev
->mode_config
.property_blob_list
);
4018 static void drm_property_destroy_blob(struct drm_device
*dev
,
4019 struct drm_property_blob
*blob
)
4021 drm_mode_object_put(dev
, &blob
->base
);
4022 list_del(&blob
->head
);
4027 * drm_mode_getblob_ioctl - get the contents of a blob property value
4030 * @file_priv: DRM file info
4032 * This function retrieves the contents of a blob property. The value stored in
4033 * an object's blob property is just a normal modeset object id.
4035 * Called by the user via ioctl.
4038 * Zero on success, negative errno on failure.
4040 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
4041 void *data
, struct drm_file
*file_priv
)
4043 struct drm_mode_get_blob
*out_resp
= data
;
4044 struct drm_property_blob
*blob
;
4046 void __user
*blob_ptr
;
4048 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4051 drm_modeset_lock_all(dev
);
4052 blob
= drm_property_blob_find(dev
, out_resp
->blob_id
);
4058 if (out_resp
->length
== blob
->length
) {
4059 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4060 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)){
4065 out_resp
->length
= blob
->length
;
4068 drm_modeset_unlock_all(dev
);
4073 * drm_mode_connector_set_path_property - set tile property on connector
4074 * @connector: connector to set property on.
4075 * @path: path to use for property.
4077 * This creates a property to expose to userspace to specify a
4078 * connector path. This is mainly used for DisplayPort MST where
4079 * connectors have a topology and we want to allow userspace to give
4080 * them more meaningful names.
4083 * Zero on success, negative errno on failure.
4085 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4088 struct drm_device
*dev
= connector
->dev
;
4089 size_t size
= strlen(path
) + 1;
4092 connector
->path_blob_ptr
= drm_property_create_blob(connector
->dev
,
4094 if (!connector
->path_blob_ptr
)
4097 ret
= drm_object_property_set_value(&connector
->base
,
4098 dev
->mode_config
.path_property
,
4099 connector
->path_blob_ptr
->base
.id
);
4102 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4105 * drm_mode_connector_set_tile_property - set tile property on connector
4106 * @connector: connector to set property on.
4108 * This looks up the tile information for a connector, and creates a
4109 * property for userspace to parse if it exists. The property is of
4110 * the form of 8 integers using ':' as a separator.
4113 * Zero on success, errno on failure.
4115 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
)
4117 struct drm_device
*dev
= connector
->dev
;
4121 if (connector
->tile_blob_ptr
)
4122 drm_property_destroy_blob(dev
, connector
->tile_blob_ptr
);
4124 if (!connector
->has_tile
) {
4125 connector
->tile_blob_ptr
= NULL
;
4126 ret
= drm_object_property_set_value(&connector
->base
,
4127 dev
->mode_config
.tile_property
, 0);
4131 snprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4132 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
4133 connector
->num_h_tile
, connector
->num_v_tile
,
4134 connector
->tile_h_loc
, connector
->tile_v_loc
,
4135 connector
->tile_h_size
, connector
->tile_v_size
);
4136 size
= strlen(tile
) + 1;
4138 connector
->tile_blob_ptr
= drm_property_create_blob(connector
->dev
,
4140 if (!connector
->tile_blob_ptr
)
4143 ret
= drm_object_property_set_value(&connector
->base
,
4144 dev
->mode_config
.tile_property
,
4145 connector
->tile_blob_ptr
->base
.id
);
4148 EXPORT_SYMBOL(drm_mode_connector_set_tile_property
);
4151 * drm_mode_connector_update_edid_property - update the edid property of a connector
4152 * @connector: drm connector
4153 * @edid: new value of the edid property
4155 * This function creates a new blob modeset object and assigns its id to the
4156 * connector's edid property.
4159 * Zero on success, negative errno on failure.
4161 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4162 const struct edid
*edid
)
4164 struct drm_device
*dev
= connector
->dev
;
4168 /* ignore requests to set edid when overridden */
4169 if (connector
->override_edid
)
4172 if (connector
->edid_blob_ptr
)
4173 drm_property_destroy_blob(dev
, connector
->edid_blob_ptr
);
4175 /* Delete edid, when there is none. */
4177 connector
->edid_blob_ptr
= NULL
;
4178 ret
= drm_object_property_set_value(&connector
->base
, dev
->mode_config
.edid_property
, 0);
4182 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4183 connector
->edid_blob_ptr
= drm_property_create_blob(connector
->dev
,
4185 if (!connector
->edid_blob_ptr
)
4188 ret
= drm_object_property_set_value(&connector
->base
,
4189 dev
->mode_config
.edid_property
,
4190 connector
->edid_blob_ptr
->base
.id
);
4194 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4196 static bool drm_property_change_is_valid(struct drm_property
*property
,
4199 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4202 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4203 if (value
< property
->values
[0] || value
> property
->values
[1])
4206 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4207 int64_t svalue
= U642I64(value
);
4208 if (svalue
< U642I64(property
->values
[0]) ||
4209 svalue
> U642I64(property
->values
[1]))
4212 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4214 uint64_t valid_mask
= 0;
4215 for (i
= 0; i
< property
->num_values
; i
++)
4216 valid_mask
|= (1ULL << property
->values
[i
]);
4217 return !(value
& ~valid_mask
);
4218 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4219 /* Only the driver knows */
4221 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4222 struct drm_mode_object
*obj
;
4223 /* a zero value for an object property translates to null: */
4227 * NOTE: use _object_find() directly to bypass restriction on
4228 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4229 * object this could race against object finalization, so it
4230 * simply tells us that the object *was* valid. Which is good
4233 obj
= _object_find(property
->dev
, value
, property
->values
[0]);
4237 for (i
= 0; i
< property
->num_values
; i
++)
4238 if (property
->values
[i
] == value
)
4245 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4248 * @file_priv: DRM file info
4250 * This function sets the current value for a connectors's property. It also
4251 * calls into a driver's ->set_property callback to update the hardware state
4253 * Called by the user via ioctl.
4256 * Zero on success, negative errno on failure.
4258 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4259 void *data
, struct drm_file
*file_priv
)
4261 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4262 struct drm_mode_obj_set_property obj_set_prop
= {
4263 .value
= conn_set_prop
->value
,
4264 .prop_id
= conn_set_prop
->prop_id
,
4265 .obj_id
= conn_set_prop
->connector_id
,
4266 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4269 /* It does all the locking and checking we need */
4270 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4273 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4274 struct drm_property
*property
,
4278 struct drm_connector
*connector
= obj_to_connector(obj
);
4280 /* Do DPMS ourselves */
4281 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4282 if (connector
->funcs
->dpms
)
4283 (*connector
->funcs
->dpms
)(connector
, (int)value
);
4285 } else if (connector
->funcs
->set_property
)
4286 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4288 /* store the property value if successful */
4290 drm_object_property_set_value(&connector
->base
, property
, value
);
4294 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4295 struct drm_property
*property
,
4299 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4301 if (crtc
->funcs
->set_property
)
4302 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4304 drm_object_property_set_value(obj
, property
, value
);
4310 * drm_mode_plane_set_obj_prop - set the value of a property
4311 * @plane: drm plane object to set property value for
4312 * @property: property to set
4313 * @value: value the property should be set to
4315 * This functions sets a given property on a given plane object. This function
4316 * calls the driver's ->set_property callback and changes the software state of
4317 * the property if the callback succeeds.
4320 * Zero on success, error code on failure.
4322 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4323 struct drm_property
*property
,
4327 struct drm_mode_object
*obj
= &plane
->base
;
4329 if (plane
->funcs
->set_property
)
4330 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4332 drm_object_property_set_value(obj
, property
, value
);
4336 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4339 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4342 * @file_priv: DRM file info
4344 * This function retrieves the current value for an object's property. Compared
4345 * to the connector specific ioctl this one is extended to also work on crtc and
4348 * Called by the user via ioctl.
4351 * Zero on success, negative errno on failure.
4353 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4354 struct drm_file
*file_priv
)
4356 struct drm_mode_obj_get_properties
*arg
= data
;
4357 struct drm_mode_object
*obj
;
4361 int props_count
= 0;
4362 uint32_t __user
*props_ptr
;
4363 uint64_t __user
*prop_values_ptr
;
4365 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4368 drm_modeset_lock_all(dev
);
4370 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4375 if (!obj
->properties
) {
4380 props_count
= obj
->properties
->count
;
4382 /* This ioctl is called twice, once to determine how much space is
4383 * needed, and the 2nd time to fill it. */
4384 if ((arg
->count_props
>= props_count
) && props_count
) {
4386 props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->props_ptr
);
4387 prop_values_ptr
= (uint64_t __user
*)(unsigned long)
4388 (arg
->prop_values_ptr
);
4389 for (i
= 0; i
< props_count
; i
++) {
4390 if (put_user(obj
->properties
->ids
[i
],
4391 props_ptr
+ copied
)) {
4395 if (put_user(obj
->properties
->values
[i
],
4396 prop_values_ptr
+ copied
)) {
4403 arg
->count_props
= props_count
;
4405 drm_modeset_unlock_all(dev
);
4410 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4413 * @file_priv: DRM file info
4415 * This function sets the current value for an object's property. It also calls
4416 * into a driver's ->set_property callback to update the hardware state.
4417 * Compared to the connector specific ioctl this one is extended to also work on
4418 * crtc and plane objects.
4420 * Called by the user via ioctl.
4423 * Zero on success, negative errno on failure.
4425 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4426 struct drm_file
*file_priv
)
4428 struct drm_mode_obj_set_property
*arg
= data
;
4429 struct drm_mode_object
*arg_obj
;
4430 struct drm_mode_object
*prop_obj
;
4431 struct drm_property
*property
;
4435 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4438 drm_modeset_lock_all(dev
);
4440 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4445 if (!arg_obj
->properties
)
4448 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4449 if (arg_obj
->properties
->ids
[i
] == arg
->prop_id
)
4452 if (i
== arg_obj
->properties
->count
)
4455 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
4456 DRM_MODE_OBJECT_PROPERTY
);
4461 property
= obj_to_property(prop_obj
);
4463 if (!drm_property_change_is_valid(property
, arg
->value
))
4466 switch (arg_obj
->type
) {
4467 case DRM_MODE_OBJECT_CONNECTOR
:
4468 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
4471 case DRM_MODE_OBJECT_CRTC
:
4472 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
4474 case DRM_MODE_OBJECT_PLANE
:
4475 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
4476 property
, arg
->value
);
4481 drm_modeset_unlock_all(dev
);
4486 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4487 * @connector: connector to attach
4488 * @encoder: encoder to attach @connector to
4490 * This function links up a connector to an encoder. Note that the routing
4491 * restrictions between encoders and crtcs are exposed to userspace through the
4492 * possible_clones and possible_crtcs bitmasks.
4495 * Zero on success, negative errno on failure.
4497 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
4498 struct drm_encoder
*encoder
)
4502 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
4503 if (connector
->encoder_ids
[i
] == 0) {
4504 connector
->encoder_ids
[i
] = encoder
->base
.id
;
4510 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
4513 * drm_mode_crtc_set_gamma_size - set the gamma table size
4514 * @crtc: CRTC to set the gamma table size for
4515 * @gamma_size: size of the gamma table
4517 * Drivers which support gamma tables should set this to the supported gamma
4518 * table size when initializing the CRTC. Currently the drm core only supports a
4519 * fixed gamma table size.
4522 * Zero on success, negative errno on failure.
4524 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
4527 crtc
->gamma_size
= gamma_size
;
4529 crtc
->gamma_store
= kzalloc(gamma_size
* sizeof(uint16_t) * 3, GFP_KERNEL
);
4530 if (!crtc
->gamma_store
) {
4531 crtc
->gamma_size
= 0;
4537 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
4540 * drm_mode_gamma_set_ioctl - set the gamma table
4543 * @file_priv: DRM file info
4545 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4546 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4548 * Called by the user via ioctl.
4551 * Zero on success, negative errno on failure.
4553 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
4554 void *data
, struct drm_file
*file_priv
)
4556 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4557 struct drm_crtc
*crtc
;
4558 void *r_base
, *g_base
, *b_base
;
4562 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4565 drm_modeset_lock_all(dev
);
4566 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4572 if (crtc
->funcs
->gamma_set
== NULL
) {
4577 /* memcpy into gamma store */
4578 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4583 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4584 r_base
= crtc
->gamma_store
;
4585 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
4590 g_base
= r_base
+ size
;
4591 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
4596 b_base
= g_base
+ size
;
4597 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
4602 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
4605 drm_modeset_unlock_all(dev
);
4611 * drm_mode_gamma_get_ioctl - get the gamma table
4614 * @file_priv: DRM file info
4616 * Copy the current gamma table into the storage provided. This also provides
4617 * the gamma table size the driver expects, which can be used to size the
4618 * allocated storage.
4620 * Called by the user via ioctl.
4623 * Zero on success, negative errno on failure.
4625 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
4626 void *data
, struct drm_file
*file_priv
)
4628 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4629 struct drm_crtc
*crtc
;
4630 void *r_base
, *g_base
, *b_base
;
4634 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4637 drm_modeset_lock_all(dev
);
4638 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4644 /* memcpy into gamma store */
4645 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4650 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4651 r_base
= crtc
->gamma_store
;
4652 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
4657 g_base
= r_base
+ size
;
4658 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
4663 b_base
= g_base
+ size
;
4664 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
4669 drm_modeset_unlock_all(dev
);
4674 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4677 * @file_priv: DRM file info
4679 * This schedules an asynchronous update on a given CRTC, called page flip.
4680 * Optionally a drm event is generated to signal the completion of the event.
4681 * Generic drivers cannot assume that a pageflip with changed framebuffer
4682 * properties (including driver specific metadata like tiling layout) will work,
4683 * but some drivers support e.g. pixel format changes through the pageflip
4686 * Called by the user via ioctl.
4689 * Zero on success, negative errno on failure.
4691 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
4692 void *data
, struct drm_file
*file_priv
)
4694 struct drm_mode_crtc_page_flip
*page_flip
= data
;
4695 struct drm_crtc
*crtc
;
4696 struct drm_framebuffer
*fb
= NULL
;
4697 struct drm_pending_vblank_event
*e
= NULL
;
4698 unsigned long flags
;
4701 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
4702 page_flip
->reserved
!= 0)
4705 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
4708 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
4712 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
4713 if (crtc
->primary
->fb
== NULL
) {
4714 /* The framebuffer is currently unbound, presumably
4715 * due to a hotplug event, that userspace has not
4722 if (crtc
->funcs
->page_flip
== NULL
)
4725 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
4731 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
4735 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
4736 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4741 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4743 spin_lock_irqsave(&dev
->event_lock
, flags
);
4744 if (file_priv
->event_space
< sizeof e
->event
) {
4745 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4748 file_priv
->event_space
-= sizeof e
->event
;
4749 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4751 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
4753 spin_lock_irqsave(&dev
->event_lock
, flags
);
4754 file_priv
->event_space
+= sizeof e
->event
;
4755 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4759 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
4760 e
->event
.base
.length
= sizeof e
->event
;
4761 e
->event
.user_data
= page_flip
->user_data
;
4762 e
->base
.event
= &e
->event
.base
;
4763 e
->base
.file_priv
= file_priv
;
4765 (void (*) (struct drm_pending_event
*)) kfree
;
4768 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
4769 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
4771 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4772 spin_lock_irqsave(&dev
->event_lock
, flags
);
4773 file_priv
->event_space
+= sizeof e
->event
;
4774 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4777 /* Keep the old fb, don't unref it. */
4778 crtc
->primary
->old_fb
= NULL
;
4781 * Warn if the driver hasn't properly updated the crtc->fb
4782 * field to reflect that the new framebuffer is now used.
4783 * Failing to do so will screw with the reference counting
4786 WARN_ON(crtc
->primary
->fb
!= fb
);
4787 /* Unref only the old framebuffer. */
4793 drm_framebuffer_unreference(fb
);
4794 if (crtc
->primary
->old_fb
)
4795 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
4796 crtc
->primary
->old_fb
= NULL
;
4797 drm_modeset_unlock_crtc(crtc
);
4803 * drm_mode_config_reset - call ->reset callbacks
4806 * This functions calls all the crtc's, encoder's and connector's ->reset
4807 * callback. Drivers can use this in e.g. their driver load or resume code to
4808 * reset hardware and software state.
4810 void drm_mode_config_reset(struct drm_device
*dev
)
4812 struct drm_crtc
*crtc
;
4813 struct drm_plane
*plane
;
4814 struct drm_encoder
*encoder
;
4815 struct drm_connector
*connector
;
4817 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
)
4818 if (plane
->funcs
->reset
)
4819 plane
->funcs
->reset(plane
);
4821 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
4822 if (crtc
->funcs
->reset
)
4823 crtc
->funcs
->reset(crtc
);
4825 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
4826 if (encoder
->funcs
->reset
)
4827 encoder
->funcs
->reset(encoder
);
4829 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
4830 connector
->status
= connector_status_unknown
;
4832 if (connector
->funcs
->reset
)
4833 connector
->funcs
->reset(connector
);
4836 EXPORT_SYMBOL(drm_mode_config_reset
);
4839 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4842 * @file_priv: DRM file info
4844 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4845 * TTM or something else entirely) and returns the resulting buffer handle. This
4846 * handle can then be wrapped up into a framebuffer modeset object.
4848 * Note that userspace is not allowed to use such objects for render
4849 * acceleration - drivers must create their own private ioctls for such a use
4852 * Called by the user via ioctl.
4855 * Zero on success, negative errno on failure.
4857 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
4858 void *data
, struct drm_file
*file_priv
)
4860 struct drm_mode_create_dumb
*args
= data
;
4861 u32 cpp
, stride
, size
;
4863 if (!dev
->driver
->dumb_create
)
4865 if (!args
->width
|| !args
->height
|| !args
->bpp
)
4868 /* overflow checks for 32bit size calculations */
4869 /* NOTE: DIV_ROUND_UP() can overflow */
4870 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
4871 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
4873 stride
= cpp
* args
->width
;
4874 if (args
->height
> 0xffffffffU
/ stride
)
4877 /* test for wrap-around */
4878 size
= args
->height
* stride
;
4879 if (PAGE_ALIGN(size
) == 0)
4883 * handle, pitch and size are output parameters. Zero them out to
4884 * prevent drivers from accidentally using uninitialized data. Since
4885 * not all existing userspace is clearing these fields properly we
4886 * cannot reject IOCTL with garbage in them.
4892 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
4896 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4899 * @file_priv: DRM file info
4901 * Allocate an offset in the drm device node's address space to be able to
4902 * memory map a dumb buffer.
4904 * Called by the user via ioctl.
4907 * Zero on success, negative errno on failure.
4909 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
4910 void *data
, struct drm_file
*file_priv
)
4912 struct drm_mode_map_dumb
*args
= data
;
4914 /* call driver ioctl to get mmap offset */
4915 if (!dev
->driver
->dumb_map_offset
)
4918 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
4922 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4925 * @file_priv: DRM file info
4927 * This destroys the userspace handle for the given dumb backing storage buffer.
4928 * Since buffer objects must be reference counted in the kernel a buffer object
4929 * won't be immediately freed if a framebuffer modeset object still uses it.
4931 * Called by the user via ioctl.
4934 * Zero on success, negative errno on failure.
4936 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
4937 void *data
, struct drm_file
*file_priv
)
4939 struct drm_mode_destroy_dumb
*args
= data
;
4941 if (!dev
->driver
->dumb_destroy
)
4944 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
4948 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4949 * @format: pixel format (DRM_FORMAT_*)
4950 * @depth: storage for the depth value
4951 * @bpp: storage for the bpp value
4953 * This only supports RGB formats here for compat with code that doesn't use
4954 * pixel formats directly yet.
4956 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
4961 case DRM_FORMAT_RGB332
:
4962 case DRM_FORMAT_BGR233
:
4966 case DRM_FORMAT_XRGB1555
:
4967 case DRM_FORMAT_XBGR1555
:
4968 case DRM_FORMAT_RGBX5551
:
4969 case DRM_FORMAT_BGRX5551
:
4970 case DRM_FORMAT_ARGB1555
:
4971 case DRM_FORMAT_ABGR1555
:
4972 case DRM_FORMAT_RGBA5551
:
4973 case DRM_FORMAT_BGRA5551
:
4977 case DRM_FORMAT_RGB565
:
4978 case DRM_FORMAT_BGR565
:
4982 case DRM_FORMAT_RGB888
:
4983 case DRM_FORMAT_BGR888
:
4987 case DRM_FORMAT_XRGB8888
:
4988 case DRM_FORMAT_XBGR8888
:
4989 case DRM_FORMAT_RGBX8888
:
4990 case DRM_FORMAT_BGRX8888
:
4994 case DRM_FORMAT_XRGB2101010
:
4995 case DRM_FORMAT_XBGR2101010
:
4996 case DRM_FORMAT_RGBX1010102
:
4997 case DRM_FORMAT_BGRX1010102
:
4998 case DRM_FORMAT_ARGB2101010
:
4999 case DRM_FORMAT_ABGR2101010
:
5000 case DRM_FORMAT_RGBA1010102
:
5001 case DRM_FORMAT_BGRA1010102
:
5005 case DRM_FORMAT_ARGB8888
:
5006 case DRM_FORMAT_ABGR8888
:
5007 case DRM_FORMAT_RGBA8888
:
5008 case DRM_FORMAT_BGRA8888
:
5013 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5014 drm_get_format_name(format
));
5020 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
5023 * drm_format_num_planes - get the number of planes for format
5024 * @format: pixel format (DRM_FORMAT_*)
5027 * The number of planes used by the specified pixel format.
5029 int drm_format_num_planes(uint32_t format
)
5032 case DRM_FORMAT_YUV410
:
5033 case DRM_FORMAT_YVU410
:
5034 case DRM_FORMAT_YUV411
:
5035 case DRM_FORMAT_YVU411
:
5036 case DRM_FORMAT_YUV420
:
5037 case DRM_FORMAT_YVU420
:
5038 case DRM_FORMAT_YUV422
:
5039 case DRM_FORMAT_YVU422
:
5040 case DRM_FORMAT_YUV444
:
5041 case DRM_FORMAT_YVU444
:
5043 case DRM_FORMAT_NV12
:
5044 case DRM_FORMAT_NV21
:
5045 case DRM_FORMAT_NV16
:
5046 case DRM_FORMAT_NV61
:
5047 case DRM_FORMAT_NV24
:
5048 case DRM_FORMAT_NV42
:
5054 EXPORT_SYMBOL(drm_format_num_planes
);
5057 * drm_format_plane_cpp - determine the bytes per pixel value
5058 * @format: pixel format (DRM_FORMAT_*)
5059 * @plane: plane index
5062 * The bytes per pixel value for the specified plane.
5064 int drm_format_plane_cpp(uint32_t format
, int plane
)
5069 if (plane
>= drm_format_num_planes(format
))
5073 case DRM_FORMAT_YUYV
:
5074 case DRM_FORMAT_YVYU
:
5075 case DRM_FORMAT_UYVY
:
5076 case DRM_FORMAT_VYUY
:
5078 case DRM_FORMAT_NV12
:
5079 case DRM_FORMAT_NV21
:
5080 case DRM_FORMAT_NV16
:
5081 case DRM_FORMAT_NV61
:
5082 case DRM_FORMAT_NV24
:
5083 case DRM_FORMAT_NV42
:
5084 return plane
? 2 : 1;
5085 case DRM_FORMAT_YUV410
:
5086 case DRM_FORMAT_YVU410
:
5087 case DRM_FORMAT_YUV411
:
5088 case DRM_FORMAT_YVU411
:
5089 case DRM_FORMAT_YUV420
:
5090 case DRM_FORMAT_YVU420
:
5091 case DRM_FORMAT_YUV422
:
5092 case DRM_FORMAT_YVU422
:
5093 case DRM_FORMAT_YUV444
:
5094 case DRM_FORMAT_YVU444
:
5097 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
5101 EXPORT_SYMBOL(drm_format_plane_cpp
);
5104 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5105 * @format: pixel format (DRM_FORMAT_*)
5108 * The horizontal chroma subsampling factor for the
5109 * specified pixel format.
5111 int drm_format_horz_chroma_subsampling(uint32_t format
)
5114 case DRM_FORMAT_YUV411
:
5115 case DRM_FORMAT_YVU411
:
5116 case DRM_FORMAT_YUV410
:
5117 case DRM_FORMAT_YVU410
:
5119 case DRM_FORMAT_YUYV
:
5120 case DRM_FORMAT_YVYU
:
5121 case DRM_FORMAT_UYVY
:
5122 case DRM_FORMAT_VYUY
:
5123 case DRM_FORMAT_NV12
:
5124 case DRM_FORMAT_NV21
:
5125 case DRM_FORMAT_NV16
:
5126 case DRM_FORMAT_NV61
:
5127 case DRM_FORMAT_YUV422
:
5128 case DRM_FORMAT_YVU422
:
5129 case DRM_FORMAT_YUV420
:
5130 case DRM_FORMAT_YVU420
:
5136 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5139 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5140 * @format: pixel format (DRM_FORMAT_*)
5143 * The vertical chroma subsampling factor for the
5144 * specified pixel format.
5146 int drm_format_vert_chroma_subsampling(uint32_t format
)
5149 case DRM_FORMAT_YUV410
:
5150 case DRM_FORMAT_YVU410
:
5152 case DRM_FORMAT_YUV420
:
5153 case DRM_FORMAT_YVU420
:
5154 case DRM_FORMAT_NV12
:
5155 case DRM_FORMAT_NV21
:
5161 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5164 * drm_rotation_simplify() - Try to simplify the rotation
5165 * @rotation: Rotation to be simplified
5166 * @supported_rotations: Supported rotations
5168 * Attempt to simplify the rotation to a form that is supported.
5169 * Eg. if the hardware supports everything except DRM_REFLECT_X
5170 * one could call this function like this:
5172 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5173 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5174 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5176 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5177 * transforms the hardware supports, this function may not
5178 * be able to produce a supported transform, so the caller should
5179 * check the result afterwards.
5181 unsigned int drm_rotation_simplify(unsigned int rotation
,
5182 unsigned int supported_rotations
)
5184 if (rotation
& ~supported_rotations
) {
5185 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5186 rotation
= (rotation
& ~0xf) | BIT((ffs(rotation
& 0xf) + 1) % 4);
5191 EXPORT_SYMBOL(drm_rotation_simplify
);
5194 * drm_mode_config_init - initialize DRM mode_configuration structure
5197 * Initialize @dev's mode_config structure, used for tracking the graphics
5198 * configuration of @dev.
5200 * Since this initializes the modeset locks, no locking is possible. Which is no
5201 * problem, since this should happen single threaded at init time. It is the
5202 * driver's problem to ensure this guarantee.
5205 void drm_mode_config_init(struct drm_device
*dev
)
5207 mutex_init(&dev
->mode_config
.mutex
);
5208 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5209 mutex_init(&dev
->mode_config
.idr_mutex
);
5210 mutex_init(&dev
->mode_config
.fb_lock
);
5211 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5212 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5213 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5214 INIT_LIST_HEAD(&dev
->mode_config
.bridge_list
);
5215 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5216 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5217 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5218 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5219 idr_init(&dev
->mode_config
.crtc_idr
);
5220 idr_init(&dev
->mode_config
.tile_idr
);
5222 drm_modeset_lock_all(dev
);
5223 drm_mode_create_standard_connector_properties(dev
);
5224 drm_mode_create_standard_plane_properties(dev
);
5225 drm_modeset_unlock_all(dev
);
5227 /* Just to be sure */
5228 dev
->mode_config
.num_fb
= 0;
5229 dev
->mode_config
.num_connector
= 0;
5230 dev
->mode_config
.num_crtc
= 0;
5231 dev
->mode_config
.num_encoder
= 0;
5232 dev
->mode_config
.num_overlay_plane
= 0;
5233 dev
->mode_config
.num_total_plane
= 0;
5235 EXPORT_SYMBOL(drm_mode_config_init
);
5238 * drm_mode_config_cleanup - free up DRM mode_config info
5241 * Free up all the connectors and CRTCs associated with this DRM device, then
5242 * free up the framebuffers and associated buffer objects.
5244 * Note that since this /should/ happen single-threaded at driver/device
5245 * teardown time, no locking is required. It's the driver's job to ensure that
5246 * this guarantee actually holds true.
5248 * FIXME: cleanup any dangling user buffer objects too
5250 void drm_mode_config_cleanup(struct drm_device
*dev
)
5252 struct drm_connector
*connector
, *ot
;
5253 struct drm_crtc
*crtc
, *ct
;
5254 struct drm_encoder
*encoder
, *enct
;
5255 struct drm_bridge
*bridge
, *brt
;
5256 struct drm_framebuffer
*fb
, *fbt
;
5257 struct drm_property
*property
, *pt
;
5258 struct drm_property_blob
*blob
, *bt
;
5259 struct drm_plane
*plane
, *plt
;
5261 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5263 encoder
->funcs
->destroy(encoder
);
5266 list_for_each_entry_safe(bridge
, brt
,
5267 &dev
->mode_config
.bridge_list
, head
) {
5268 bridge
->funcs
->destroy(bridge
);
5271 list_for_each_entry_safe(connector
, ot
,
5272 &dev
->mode_config
.connector_list
, head
) {
5273 connector
->funcs
->destroy(connector
);
5276 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5278 drm_property_destroy(dev
, property
);
5281 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5283 drm_property_destroy_blob(dev
, blob
);
5287 * Single-threaded teardown context, so it's not required to grab the
5288 * fb_lock to protect against concurrent fb_list access. Contrary, it
5289 * would actually deadlock with the drm_framebuffer_cleanup function.
5291 * Also, if there are any framebuffers left, that's a driver leak now,
5292 * so politely WARN about this.
5294 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5295 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5296 drm_framebuffer_remove(fb
);
5299 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5301 plane
->funcs
->destroy(plane
);
5304 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5305 crtc
->funcs
->destroy(crtc
);
5308 idr_destroy(&dev
->mode_config
.tile_idr
);
5309 idr_destroy(&dev
->mode_config
.crtc_idr
);
5310 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5312 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5314 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5315 unsigned int supported_rotations
)
5317 static const struct drm_prop_enum_list props
[] = {
5318 { DRM_ROTATE_0
, "rotate-0" },
5319 { DRM_ROTATE_90
, "rotate-90" },
5320 { DRM_ROTATE_180
, "rotate-180" },
5321 { DRM_ROTATE_270
, "rotate-270" },
5322 { DRM_REFLECT_X
, "reflect-x" },
5323 { DRM_REFLECT_Y
, "reflect-y" },
5326 return drm_property_create_bitmask(dev
, 0, "rotation",
5327 props
, ARRAY_SIZE(props
),
5328 supported_rotations
);
5330 EXPORT_SYMBOL(drm_mode_create_rotation_property
);
5335 * Tile groups are used to represent tiled monitors with a unique
5336 * integer identifier. Tiled monitors using DisplayID v1.3 have
5337 * a unique 8-byte handle, we store this in a tile group, so we
5338 * have a common identifier for all tiles in a monitor group.
5340 static void drm_tile_group_free(struct kref
*kref
)
5342 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
5343 struct drm_device
*dev
= tg
->dev
;
5344 mutex_lock(&dev
->mode_config
.idr_mutex
);
5345 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
5346 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5351 * drm_mode_put_tile_group - drop a reference to a tile group.
5353 * @tg: tile group to drop reference to.
5355 * drop reference to tile group and free if 0.
5357 void drm_mode_put_tile_group(struct drm_device
*dev
,
5358 struct drm_tile_group
*tg
)
5360 kref_put(&tg
->refcount
, drm_tile_group_free
);
5364 * drm_mode_get_tile_group - get a reference to an existing tile group
5366 * @topology: 8-bytes unique per monitor.
5368 * Use the unique bytes to get a reference to an existing tile group.
5371 * tile group or NULL if not found.
5373 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
5376 struct drm_tile_group
*tg
;
5378 mutex_lock(&dev
->mode_config
.idr_mutex
);
5379 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
5380 if (!memcmp(tg
->group_data
, topology
, 8)) {
5381 if (!kref_get_unless_zero(&tg
->refcount
))
5383 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5387 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5392 * drm_mode_create_tile_group - create a tile group from a displayid description
5394 * @topology: 8-bytes unique per monitor.
5396 * Create a tile group for the unique monitor, and get a unique
5397 * identifier for the tile group.
5400 * new tile group or error.
5402 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
5405 struct drm_tile_group
*tg
;
5408 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
5410 return ERR_PTR(-ENOMEM
);
5412 kref_init(&tg
->refcount
);
5413 memcpy(tg
->group_data
, topology
, 8);
5416 mutex_lock(&dev
->mode_config
.idr_mutex
);
5417 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
5425 mutex_unlock(&dev
->mode_config
.idr_mutex
);