2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_fourcc.h>
40 #include <drm/drm_modeset_lock.h>
41 #include <drm/drm_atomic.h>
43 #include "drm_crtc_internal.h"
44 #include "drm_internal.h"
46 static struct drm_framebuffer
*
47 internal_framebuffer_create(struct drm_device
*dev
,
48 struct drm_mode_fb_cmd2
*r
,
49 struct drm_file
*file_priv
);
51 /* Avoid boilerplate. I'm tired of typing. */
52 #define DRM_ENUM_NAME_FN(fnname, list) \
53 const char *fnname(int val) \
56 for (i = 0; i < ARRAY_SIZE(list); i++) { \
57 if (list[i].type == val) \
58 return list[i].name; \
66 static const struct drm_prop_enum_list drm_dpms_enum_list
[] = {
67 { DRM_MODE_DPMS_ON
, "On" },
68 { DRM_MODE_DPMS_STANDBY
, "Standby" },
69 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
70 { DRM_MODE_DPMS_OFF
, "Off" }
73 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
75 static const struct drm_prop_enum_list drm_plane_type_enum_list
[] = {
76 { DRM_PLANE_TYPE_OVERLAY
, "Overlay" },
77 { DRM_PLANE_TYPE_PRIMARY
, "Primary" },
78 { DRM_PLANE_TYPE_CURSOR
, "Cursor" },
84 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] = {
85 { DRM_MODE_SCALE_NONE
, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
87 { DRM_MODE_SCALE_CENTER
, "Center" },
88 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list
[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE
, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3
, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9
, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list
[] = {
101 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
102 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
103 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
106 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
108 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] = {
109 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
110 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
111 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
114 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
115 drm_dvi_i_subconnector_enum_list
)
117 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] = {
118 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
122 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
125 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
127 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] = {
128 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
129 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
132 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
135 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
136 drm_tv_subconnector_enum_list
)
138 static const struct drm_prop_enum_list drm_dirty_info_enum_list
[] = {
139 { DRM_MODE_DIRTY_OFF
, "Off" },
140 { DRM_MODE_DIRTY_ON
, "On" },
141 { DRM_MODE_DIRTY_ANNOTATE
, "Annotate" },
144 struct drm_conn_prop_enum_list
{
151 * Connector and encoder types.
153 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] = {
154 { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
155 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
156 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
157 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
158 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
159 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
160 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
161 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
162 { DRM_MODE_CONNECTOR_Component
, "Component" },
163 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
164 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
165 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
166 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
167 { DRM_MODE_CONNECTOR_TV
, "TV" },
168 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
169 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
170 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
173 static const struct drm_prop_enum_list drm_encoder_enum_list
[] = {
174 { DRM_MODE_ENCODER_NONE
, "None" },
175 { DRM_MODE_ENCODER_DAC
, "DAC" },
176 { DRM_MODE_ENCODER_TMDS
, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS
, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC
, "TV" },
179 { DRM_MODE_ENCODER_VIRTUAL
, "Virtual" },
180 { DRM_MODE_ENCODER_DSI
, "DSI" },
181 { DRM_MODE_ENCODER_DPMST
, "DP MST" },
184 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] = {
185 { SubPixelUnknown
, "Unknown" },
186 { SubPixelHorizontalRGB
, "Horizontal RGB" },
187 { SubPixelHorizontalBGR
, "Horizontal BGR" },
188 { SubPixelVerticalRGB
, "Vertical RGB" },
189 { SubPixelVerticalBGR
, "Vertical BGR" },
190 { SubPixelNone
, "None" },
193 void drm_connector_ida_init(void)
197 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
198 ida_init(&drm_connector_enum_list
[i
].ida
);
201 void drm_connector_ida_destroy(void)
205 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
206 ida_destroy(&drm_connector_enum_list
[i
].ida
);
210 * drm_get_connector_status_name - return a string for connector status
211 * @status: connector status to compute name of
213 * In contrast to the other drm_get_*_name functions this one here returns a
214 * const pointer and hence is threadsafe.
216 const char *drm_get_connector_status_name(enum drm_connector_status status
)
218 if (status
== connector_status_connected
)
220 else if (status
== connector_status_disconnected
)
221 return "disconnected";
225 EXPORT_SYMBOL(drm_get_connector_status_name
);
228 * drm_get_subpixel_order_name - return a string for a given subpixel enum
229 * @order: enum of subpixel_order
231 * Note you could abuse this and return something out of bounds, but that
232 * would be a caller error. No unscrubbed user data should make it here.
234 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
236 return drm_subpixel_enum_list
[order
].name
;
238 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
240 static char printable_char(int c
)
242 return isascii(c
) && isprint(c
) ? c
: '?';
246 * drm_get_format_name - return a string for drm fourcc format
247 * @format: format to compute name of
249 * Note that the buffer used by this function is globally shared and owned by
250 * the function itself.
252 * FIXME: This isn't really multithreading safe.
254 const char *drm_get_format_name(uint32_t format
)
258 snprintf(buf
, sizeof(buf
),
259 "%c%c%c%c %s-endian (0x%08x)",
260 printable_char(format
& 0xff),
261 printable_char((format
>> 8) & 0xff),
262 printable_char((format
>> 16) & 0xff),
263 printable_char((format
>> 24) & 0x7f),
264 format
& DRM_FORMAT_BIG_ENDIAN
? "big" : "little",
269 EXPORT_SYMBOL(drm_get_format_name
);
272 * Internal function to assign a slot in the object idr and optionally
273 * register the object into the idr.
275 static int drm_mode_object_get_reg(struct drm_device
*dev
,
276 struct drm_mode_object
*obj
,
282 mutex_lock(&dev
->mode_config
.idr_mutex
);
283 ret
= idr_alloc(&dev
->mode_config
.crtc_idr
, register_obj
? obj
: NULL
, 1, 0, GFP_KERNEL
);
286 * Set up the object linking under the protection of the idr
287 * lock so that other users can't see inconsistent state.
290 obj
->type
= obj_type
;
292 mutex_unlock(&dev
->mode_config
.idr_mutex
);
294 return ret
< 0 ? ret
: 0;
298 * drm_mode_object_get - allocate a new modeset identifier
300 * @obj: object pointer, used to generate unique ID
301 * @obj_type: object type
303 * Create a unique identifier based on @ptr in @dev's identifier space. Used
304 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
305 * modeset identifiers are _not_ reference counted. Hence don't use this for
306 * reference counted modeset objects like framebuffers.
309 * New unique (relative to other objects in @dev) integer identifier for the
312 int drm_mode_object_get(struct drm_device
*dev
,
313 struct drm_mode_object
*obj
, uint32_t obj_type
)
315 return drm_mode_object_get_reg(dev
, obj
, obj_type
, true);
318 static void drm_mode_object_register(struct drm_device
*dev
,
319 struct drm_mode_object
*obj
)
321 mutex_lock(&dev
->mode_config
.idr_mutex
);
322 idr_replace(&dev
->mode_config
.crtc_idr
, obj
, obj
->id
);
323 mutex_unlock(&dev
->mode_config
.idr_mutex
);
327 * drm_mode_object_put - free a modeset identifer
329 * @object: object to free
331 * Free @id from @dev's unique identifier pool. Note that despite the _get
332 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
333 * for reference counted modeset objects like framebuffers.
335 void drm_mode_object_put(struct drm_device
*dev
,
336 struct drm_mode_object
*object
)
338 mutex_lock(&dev
->mode_config
.idr_mutex
);
339 idr_remove(&dev
->mode_config
.crtc_idr
, object
->id
);
340 mutex_unlock(&dev
->mode_config
.idr_mutex
);
343 static struct drm_mode_object
*_object_find(struct drm_device
*dev
,
344 uint32_t id
, uint32_t type
)
346 struct drm_mode_object
*obj
= NULL
;
348 mutex_lock(&dev
->mode_config
.idr_mutex
);
349 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
350 if (obj
&& type
!= DRM_MODE_OBJECT_ANY
&& obj
->type
!= type
)
352 if (obj
&& obj
->id
!= id
)
354 /* don't leak out unref'd fb's */
355 if (obj
&& (obj
->type
== DRM_MODE_OBJECT_FB
))
357 mutex_unlock(&dev
->mode_config
.idr_mutex
);
363 * drm_mode_object_find - look up a drm object with static lifetime
365 * @id: id of the mode object
366 * @type: type of the mode object
368 * Note that framebuffers cannot be looked up with this functions - since those
369 * are reference counted, they need special treatment. Even with
370 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
371 * rather than WARN_ON()).
373 struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
374 uint32_t id
, uint32_t type
)
376 struct drm_mode_object
*obj
= NULL
;
378 /* Framebuffers are reference counted and need their own lookup
380 WARN_ON(type
== DRM_MODE_OBJECT_FB
);
381 obj
= _object_find(dev
, id
, type
);
384 EXPORT_SYMBOL(drm_mode_object_find
);
387 * drm_framebuffer_init - initialize a framebuffer
389 * @fb: framebuffer to be initialized
390 * @funcs: ... with these functions
392 * Allocates an ID for the framebuffer's parent mode object, sets its mode
393 * functions & device file and adds it to the master fd list.
396 * This functions publishes the fb and makes it available for concurrent access
397 * by other users. Which means by this point the fb _must_ be fully set up -
398 * since all the fb attributes are invariant over its lifetime, no further
399 * locking but only correct reference counting is required.
402 * Zero on success, error code on failure.
404 int drm_framebuffer_init(struct drm_device
*dev
, struct drm_framebuffer
*fb
,
405 const struct drm_framebuffer_funcs
*funcs
)
409 mutex_lock(&dev
->mode_config
.fb_lock
);
410 kref_init(&fb
->refcount
);
411 INIT_LIST_HEAD(&fb
->filp_head
);
415 ret
= drm_mode_object_get(dev
, &fb
->base
, DRM_MODE_OBJECT_FB
);
419 dev
->mode_config
.num_fb
++;
420 list_add(&fb
->head
, &dev
->mode_config
.fb_list
);
422 mutex_unlock(&dev
->mode_config
.fb_lock
);
426 EXPORT_SYMBOL(drm_framebuffer_init
);
428 /* dev->mode_config.fb_lock must be held! */
429 static void __drm_framebuffer_unregister(struct drm_device
*dev
,
430 struct drm_framebuffer
*fb
)
432 mutex_lock(&dev
->mode_config
.idr_mutex
);
433 idr_remove(&dev
->mode_config
.crtc_idr
, fb
->base
.id
);
434 mutex_unlock(&dev
->mode_config
.idr_mutex
);
439 static void drm_framebuffer_free(struct kref
*kref
)
441 struct drm_framebuffer
*fb
=
442 container_of(kref
, struct drm_framebuffer
, refcount
);
443 struct drm_device
*dev
= fb
->dev
;
446 * The lookup idr holds a weak reference, which has not necessarily been
447 * removed at this point. Check for that.
449 mutex_lock(&dev
->mode_config
.fb_lock
);
451 /* Mark fb as reaped and drop idr ref. */
452 __drm_framebuffer_unregister(dev
, fb
);
454 mutex_unlock(&dev
->mode_config
.fb_lock
);
456 fb
->funcs
->destroy(fb
);
459 static struct drm_framebuffer
*__drm_framebuffer_lookup(struct drm_device
*dev
,
462 struct drm_mode_object
*obj
= NULL
;
463 struct drm_framebuffer
*fb
;
465 mutex_lock(&dev
->mode_config
.idr_mutex
);
466 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
467 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_FB
) || (obj
->id
!= id
))
471 mutex_unlock(&dev
->mode_config
.idr_mutex
);
477 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
479 * @id: id of the fb object
481 * If successful, this grabs an additional reference to the framebuffer -
482 * callers need to make sure to eventually unreference the returned framebuffer
483 * again, using @drm_framebuffer_unreference.
485 struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
488 struct drm_framebuffer
*fb
;
490 mutex_lock(&dev
->mode_config
.fb_lock
);
491 fb
= __drm_framebuffer_lookup(dev
, id
);
493 if (!kref_get_unless_zero(&fb
->refcount
))
496 mutex_unlock(&dev
->mode_config
.fb_lock
);
500 EXPORT_SYMBOL(drm_framebuffer_lookup
);
503 * drm_framebuffer_unreference - unref a framebuffer
504 * @fb: framebuffer to unref
506 * This functions decrements the fb's refcount and frees it if it drops to zero.
508 void drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
510 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
511 kref_put(&fb
->refcount
, drm_framebuffer_free
);
513 EXPORT_SYMBOL(drm_framebuffer_unreference
);
516 * drm_framebuffer_reference - incr the fb refcnt
519 * This functions increments the fb's refcount.
521 void drm_framebuffer_reference(struct drm_framebuffer
*fb
)
523 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
524 kref_get(&fb
->refcount
);
526 EXPORT_SYMBOL(drm_framebuffer_reference
);
529 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
530 * @fb: fb to unregister
532 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
533 * those used for fbdev. Note that the caller must hold a reference of it's own,
534 * i.e. the object may not be destroyed through this call (since it'll lead to a
535 * locking inversion).
537 void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
)
539 struct drm_device
*dev
= fb
->dev
;
541 mutex_lock(&dev
->mode_config
.fb_lock
);
542 /* Mark fb as reaped and drop idr ref. */
543 __drm_framebuffer_unregister(dev
, fb
);
544 mutex_unlock(&dev
->mode_config
.fb_lock
);
546 EXPORT_SYMBOL(drm_framebuffer_unregister_private
);
549 * drm_framebuffer_cleanup - remove a framebuffer object
550 * @fb: framebuffer to remove
552 * Cleanup framebuffer. This function is intended to be used from the drivers
553 * ->destroy callback. It can also be used to clean up driver private
554 * framebuffers embedded into a larger structure.
556 * Note that this function does not remove the fb from active usuage - if it is
557 * still used anywhere, hilarity can ensue since userspace could call getfb on
558 * the id and get back -EINVAL. Obviously no concern at driver unload time.
560 * Also, the framebuffer will not be removed from the lookup idr - for
561 * user-created framebuffers this will happen in in the rmfb ioctl. For
562 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
563 * drm_framebuffer_unregister_private.
565 void drm_framebuffer_cleanup(struct drm_framebuffer
*fb
)
567 struct drm_device
*dev
= fb
->dev
;
569 mutex_lock(&dev
->mode_config
.fb_lock
);
571 dev
->mode_config
.num_fb
--;
572 mutex_unlock(&dev
->mode_config
.fb_lock
);
574 EXPORT_SYMBOL(drm_framebuffer_cleanup
);
577 * drm_framebuffer_remove - remove and unreference a framebuffer object
578 * @fb: framebuffer to remove
580 * Scans all the CRTCs and planes in @dev's mode_config. If they're
581 * using @fb, removes it, setting it to NULL. Then drops the reference to the
582 * passed-in framebuffer. Might take the modeset locks.
584 * Note that this function optimizes the cleanup away if the caller holds the
585 * last reference to the framebuffer. It is also guaranteed to not take the
586 * modeset locks in this case.
588 void drm_framebuffer_remove(struct drm_framebuffer
*fb
)
590 struct drm_device
*dev
= fb
->dev
;
591 struct drm_crtc
*crtc
;
592 struct drm_plane
*plane
;
593 struct drm_mode_set set
;
596 WARN_ON(!list_empty(&fb
->filp_head
));
599 * drm ABI mandates that we remove any deleted framebuffers from active
600 * useage. But since most sane clients only remove framebuffers they no
601 * longer need, try to optimize this away.
603 * Since we're holding a reference ourselves, observing a refcount of 1
604 * means that we're the last holder and can skip it. Also, the refcount
605 * can never increase from 1 again, so we don't need any barriers or
608 * Note that userspace could try to race with use and instate a new
609 * usage _after_ we've cleared all current ones. End result will be an
610 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
613 if (atomic_read(&fb
->refcount
.refcount
) > 1) {
614 drm_modeset_lock_all(dev
);
615 /* remove from any CRTC */
616 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
617 if (crtc
->primary
->fb
== fb
) {
618 /* should turn off the crtc */
619 memset(&set
, 0, sizeof(struct drm_mode_set
));
622 ret
= drm_mode_set_config_internal(&set
);
624 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc
);
628 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
) {
630 drm_plane_force_disable(plane
);
632 drm_modeset_unlock_all(dev
);
635 drm_framebuffer_unreference(fb
);
637 EXPORT_SYMBOL(drm_framebuffer_remove
);
639 DEFINE_WW_CLASS(crtc_ww_class
);
642 * drm_crtc_init_with_planes - Initialise a new CRTC object with
643 * specified primary and cursor planes.
645 * @crtc: CRTC object to init
646 * @primary: Primary plane for CRTC
647 * @cursor: Cursor plane for CRTC
648 * @funcs: callbacks for the new CRTC
650 * Inits a new object created as base part of a driver crtc object.
653 * Zero on success, error code on failure.
655 int drm_crtc_init_with_planes(struct drm_device
*dev
, struct drm_crtc
*crtc
,
656 struct drm_plane
*primary
,
657 struct drm_plane
*cursor
,
658 const struct drm_crtc_funcs
*funcs
)
660 struct drm_mode_config
*config
= &dev
->mode_config
;
663 WARN_ON(primary
&& primary
->type
!= DRM_PLANE_TYPE_PRIMARY
);
664 WARN_ON(cursor
&& cursor
->type
!= DRM_PLANE_TYPE_CURSOR
);
668 crtc
->invert_dimensions
= false;
670 drm_modeset_lock_init(&crtc
->mutex
);
671 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
675 crtc
->base
.properties
= &crtc
->properties
;
677 list_add_tail(&crtc
->head
, &config
->crtc_list
);
680 crtc
->primary
= primary
;
681 crtc
->cursor
= cursor
;
683 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
685 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
687 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
688 drm_object_attach_property(&crtc
->base
, config
->prop_active
, 0);
693 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
696 * drm_crtc_cleanup - Clean up the core crtc usage
697 * @crtc: CRTC to cleanup
699 * This function cleans up @crtc and removes it from the DRM mode setting
700 * core. Note that the function does *not* free the crtc structure itself,
701 * this is the responsibility of the caller.
703 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
705 struct drm_device
*dev
= crtc
->dev
;
707 kfree(crtc
->gamma_store
);
708 crtc
->gamma_store
= NULL
;
710 drm_modeset_lock_fini(&crtc
->mutex
);
712 drm_mode_object_put(dev
, &crtc
->base
);
713 list_del(&crtc
->head
);
714 dev
->mode_config
.num_crtc
--;
716 WARN_ON(crtc
->state
&& !crtc
->funcs
->atomic_destroy_state
);
717 if (crtc
->state
&& crtc
->funcs
->atomic_destroy_state
)
718 crtc
->funcs
->atomic_destroy_state(crtc
, crtc
->state
);
720 memset(crtc
, 0, sizeof(*crtc
));
722 EXPORT_SYMBOL(drm_crtc_cleanup
);
725 * drm_crtc_index - find the index of a registered CRTC
726 * @crtc: CRTC to find index for
728 * Given a registered CRTC, return the index of that CRTC within a DRM
729 * device's list of CRTCs.
731 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
733 unsigned int index
= 0;
734 struct drm_crtc
*tmp
;
736 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
745 EXPORT_SYMBOL(drm_crtc_index
);
748 * drm_mode_remove - remove and free a mode
749 * @connector: connector list to modify
750 * @mode: mode to remove
752 * Remove @mode from @connector's mode list, then free it.
754 static void drm_mode_remove(struct drm_connector
*connector
,
755 struct drm_display_mode
*mode
)
757 list_del(&mode
->head
);
758 drm_mode_destroy(connector
->dev
, mode
);
762 * drm_display_info_set_bus_formats - set the supported bus formats
763 * @info: display info to store bus formats in
764 * @formats: array containing the supported bus formats
765 * @num_formats: the number of entries in the fmts array
767 * Store the supported bus formats in display info structure.
768 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
769 * a full list of available formats.
771 int drm_display_info_set_bus_formats(struct drm_display_info
*info
,
773 unsigned int num_formats
)
777 if (!formats
&& num_formats
)
780 if (formats
&& num_formats
) {
781 fmts
= kmemdup(formats
, sizeof(*formats
) * num_formats
,
787 kfree(info
->bus_formats
);
788 info
->bus_formats
= fmts
;
789 info
->num_bus_formats
= num_formats
;
793 EXPORT_SYMBOL(drm_display_info_set_bus_formats
);
796 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
797 * @connector: connector to quwery
799 * The kernel supports per-connector configration of its consoles through
800 * use of the video= parameter. This function parses that option and
801 * extracts the user's specified mode (or enable/disable status) for a
802 * particular connector. This is typically only used during the early fbdev
805 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
807 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
810 if (fb_get_options(connector
->name
, &option
))
813 if (!drm_mode_parse_command_line_for_connector(option
,
821 switch (mode
->force
) {
825 case DRM_FORCE_ON_DIGITAL
:
834 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
835 connector
->force
= mode
->force
;
838 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
840 mode
->xres
, mode
->yres
,
841 mode
->refresh_specified
? mode
->refresh
: 60,
842 mode
->rb
? " reduced blanking" : "",
843 mode
->margins
? " with margins" : "",
844 mode
->interlace
? " interlaced" : "");
848 * drm_connector_init - Init a preallocated connector
850 * @connector: the connector to init
851 * @funcs: callbacks for this connector
852 * @connector_type: user visible type of the connector
854 * Initialises a preallocated connector. Connectors should be
855 * subclassed as part of driver connector objects.
858 * Zero on success, error code on failure.
860 int drm_connector_init(struct drm_device
*dev
,
861 struct drm_connector
*connector
,
862 const struct drm_connector_funcs
*funcs
,
865 struct drm_mode_config
*config
= &dev
->mode_config
;
867 struct ida
*connector_ida
=
868 &drm_connector_enum_list
[connector_type
].ida
;
870 drm_modeset_lock_all(dev
);
872 ret
= drm_mode_object_get_reg(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
, false);
876 connector
->base
.properties
= &connector
->properties
;
877 connector
->dev
= dev
;
878 connector
->funcs
= funcs
;
879 connector
->connector_type
= connector_type
;
880 connector
->connector_type_id
=
881 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
882 if (connector
->connector_type_id
< 0) {
883 ret
= connector
->connector_type_id
;
887 kasprintf(GFP_KERNEL
, "%s-%d",
888 drm_connector_enum_list
[connector_type
].name
,
889 connector
->connector_type_id
);
890 if (!connector
->name
) {
895 INIT_LIST_HEAD(&connector
->probed_modes
);
896 INIT_LIST_HEAD(&connector
->modes
);
897 connector
->edid_blob_ptr
= NULL
;
898 connector
->status
= connector_status_unknown
;
900 drm_connector_get_cmdline_mode(connector
);
902 /* We should add connectors at the end to avoid upsetting the connector
904 list_add_tail(&connector
->head
, &config
->connector_list
);
905 config
->num_connector
++;
907 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
908 drm_object_attach_property(&connector
->base
,
909 config
->edid_property
,
912 drm_object_attach_property(&connector
->base
,
913 config
->dpms_property
, 0);
915 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
916 drm_object_attach_property(&connector
->base
, config
->prop_crtc_id
, 0);
919 connector
->debugfs_entry
= NULL
;
923 drm_mode_object_put(dev
, &connector
->base
);
926 drm_modeset_unlock_all(dev
);
930 EXPORT_SYMBOL(drm_connector_init
);
933 * drm_connector_cleanup - cleans up an initialised connector
934 * @connector: connector to cleanup
936 * Cleans up the connector but doesn't free the object.
938 void drm_connector_cleanup(struct drm_connector
*connector
)
940 struct drm_device
*dev
= connector
->dev
;
941 struct drm_display_mode
*mode
, *t
;
943 if (connector
->tile_group
) {
944 drm_mode_put_tile_group(dev
, connector
->tile_group
);
945 connector
->tile_group
= NULL
;
948 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
949 drm_mode_remove(connector
, mode
);
951 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
952 drm_mode_remove(connector
, mode
);
954 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
955 connector
->connector_type_id
);
957 kfree(connector
->display_info
.bus_formats
);
958 drm_mode_object_put(dev
, &connector
->base
);
959 kfree(connector
->name
);
960 connector
->name
= NULL
;
961 list_del(&connector
->head
);
962 dev
->mode_config
.num_connector
--;
964 WARN_ON(connector
->state
&& !connector
->funcs
->atomic_destroy_state
);
965 if (connector
->state
&& connector
->funcs
->atomic_destroy_state
)
966 connector
->funcs
->atomic_destroy_state(connector
,
969 memset(connector
, 0, sizeof(*connector
));
971 EXPORT_SYMBOL(drm_connector_cleanup
);
974 * drm_connector_index - find the index of a registered connector
975 * @connector: connector to find index for
977 * Given a registered connector, return the index of that connector within a DRM
978 * device's list of connectors.
980 unsigned int drm_connector_index(struct drm_connector
*connector
)
982 unsigned int index
= 0;
983 struct drm_connector
*tmp
;
984 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
986 WARN_ON(!drm_modeset_is_locked(&config
->connection_mutex
));
988 list_for_each_entry(tmp
, &connector
->dev
->mode_config
.connector_list
, head
) {
989 if (tmp
== connector
)
997 EXPORT_SYMBOL(drm_connector_index
);
1000 * drm_connector_register - register a connector
1001 * @connector: the connector to register
1003 * Register userspace interfaces for a connector
1006 * Zero on success, error code on failure.
1008 int drm_connector_register(struct drm_connector
*connector
)
1012 drm_mode_object_register(connector
->dev
, &connector
->base
);
1014 ret
= drm_sysfs_connector_add(connector
);
1018 ret
= drm_debugfs_connector_add(connector
);
1020 drm_sysfs_connector_remove(connector
);
1026 EXPORT_SYMBOL(drm_connector_register
);
1029 * drm_connector_unregister - unregister a connector
1030 * @connector: the connector to unregister
1032 * Unregister userspace interfaces for a connector
1034 void drm_connector_unregister(struct drm_connector
*connector
)
1036 drm_sysfs_connector_remove(connector
);
1037 drm_debugfs_connector_remove(connector
);
1039 EXPORT_SYMBOL(drm_connector_unregister
);
1043 * drm_connector_unplug_all - unregister connector userspace interfaces
1046 * This function unregisters all connector userspace interfaces in sysfs. Should
1047 * be call when the device is disconnected, e.g. from an usb driver's
1048 * ->disconnect callback.
1050 void drm_connector_unplug_all(struct drm_device
*dev
)
1052 struct drm_connector
*connector
;
1054 /* taking the mode config mutex ends up in a clash with sysfs */
1055 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1056 drm_connector_unregister(connector
);
1059 EXPORT_SYMBOL(drm_connector_unplug_all
);
1062 * drm_encoder_init - Init a preallocated encoder
1064 * @encoder: the encoder to init
1065 * @funcs: callbacks for this encoder
1066 * @encoder_type: user visible type of the encoder
1068 * Initialises a preallocated encoder. Encoder should be
1069 * subclassed as part of driver encoder objects.
1072 * Zero on success, error code on failure.
1074 int drm_encoder_init(struct drm_device
*dev
,
1075 struct drm_encoder
*encoder
,
1076 const struct drm_encoder_funcs
*funcs
,
1081 drm_modeset_lock_all(dev
);
1083 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1088 encoder
->encoder_type
= encoder_type
;
1089 encoder
->funcs
= funcs
;
1090 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1091 drm_encoder_enum_list
[encoder_type
].name
,
1093 if (!encoder
->name
) {
1098 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1099 dev
->mode_config
.num_encoder
++;
1103 drm_mode_object_put(dev
, &encoder
->base
);
1106 drm_modeset_unlock_all(dev
);
1110 EXPORT_SYMBOL(drm_encoder_init
);
1113 * drm_encoder_cleanup - cleans up an initialised encoder
1114 * @encoder: encoder to cleanup
1116 * Cleans up the encoder but doesn't free the object.
1118 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1120 struct drm_device
*dev
= encoder
->dev
;
1122 drm_modeset_lock_all(dev
);
1123 drm_mode_object_put(dev
, &encoder
->base
);
1124 kfree(encoder
->name
);
1125 list_del(&encoder
->head
);
1126 dev
->mode_config
.num_encoder
--;
1127 drm_modeset_unlock_all(dev
);
1129 memset(encoder
, 0, sizeof(*encoder
));
1131 EXPORT_SYMBOL(drm_encoder_cleanup
);
1134 * drm_universal_plane_init - Initialize a new universal plane object
1136 * @plane: plane object to init
1137 * @possible_crtcs: bitmask of possible CRTCs
1138 * @funcs: callbacks for the new plane
1139 * @formats: array of supported formats (%DRM_FORMAT_*)
1140 * @format_count: number of elements in @formats
1141 * @type: type of plane (overlay, primary, cursor)
1143 * Initializes a plane object of type @type.
1146 * Zero on success, error code on failure.
1148 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1149 unsigned long possible_crtcs
,
1150 const struct drm_plane_funcs
*funcs
,
1151 const uint32_t *formats
, uint32_t format_count
,
1152 enum drm_plane_type type
)
1154 struct drm_mode_config
*config
= &dev
->mode_config
;
1157 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1161 drm_modeset_lock_init(&plane
->mutex
);
1163 plane
->base
.properties
= &plane
->properties
;
1165 plane
->funcs
= funcs
;
1166 plane
->format_types
= kmalloc_array(format_count
, sizeof(uint32_t),
1168 if (!plane
->format_types
) {
1169 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1170 drm_mode_object_put(dev
, &plane
->base
);
1174 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1175 plane
->format_count
= format_count
;
1176 plane
->possible_crtcs
= possible_crtcs
;
1179 list_add_tail(&plane
->head
, &config
->plane_list
);
1180 config
->num_total_plane
++;
1181 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1182 config
->num_overlay_plane
++;
1184 drm_object_attach_property(&plane
->base
,
1185 config
->plane_type_property
,
1188 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
1189 drm_object_attach_property(&plane
->base
, config
->prop_fb_id
, 0);
1190 drm_object_attach_property(&plane
->base
, config
->prop_crtc_id
, 0);
1191 drm_object_attach_property(&plane
->base
, config
->prop_crtc_x
, 0);
1192 drm_object_attach_property(&plane
->base
, config
->prop_crtc_y
, 0);
1193 drm_object_attach_property(&plane
->base
, config
->prop_crtc_w
, 0);
1194 drm_object_attach_property(&plane
->base
, config
->prop_crtc_h
, 0);
1195 drm_object_attach_property(&plane
->base
, config
->prop_src_x
, 0);
1196 drm_object_attach_property(&plane
->base
, config
->prop_src_y
, 0);
1197 drm_object_attach_property(&plane
->base
, config
->prop_src_w
, 0);
1198 drm_object_attach_property(&plane
->base
, config
->prop_src_h
, 0);
1203 EXPORT_SYMBOL(drm_universal_plane_init
);
1206 * drm_plane_init - Initialize a legacy plane
1208 * @plane: plane object to init
1209 * @possible_crtcs: bitmask of possible CRTCs
1210 * @funcs: callbacks for the new plane
1211 * @formats: array of supported formats (%DRM_FORMAT_*)
1212 * @format_count: number of elements in @formats
1213 * @is_primary: plane type (primary vs overlay)
1215 * Legacy API to initialize a DRM plane.
1217 * New drivers should call drm_universal_plane_init() instead.
1220 * Zero on success, error code on failure.
1222 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1223 unsigned long possible_crtcs
,
1224 const struct drm_plane_funcs
*funcs
,
1225 const uint32_t *formats
, uint32_t format_count
,
1228 enum drm_plane_type type
;
1230 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1231 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1232 formats
, format_count
, type
);
1234 EXPORT_SYMBOL(drm_plane_init
);
1237 * drm_plane_cleanup - Clean up the core plane usage
1238 * @plane: plane to cleanup
1240 * This function cleans up @plane and removes it from the DRM mode setting
1241 * core. Note that the function does *not* free the plane structure itself,
1242 * this is the responsibility of the caller.
1244 void drm_plane_cleanup(struct drm_plane
*plane
)
1246 struct drm_device
*dev
= plane
->dev
;
1248 drm_modeset_lock_all(dev
);
1249 kfree(plane
->format_types
);
1250 drm_mode_object_put(dev
, &plane
->base
);
1252 BUG_ON(list_empty(&plane
->head
));
1254 list_del(&plane
->head
);
1255 dev
->mode_config
.num_total_plane
--;
1256 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1257 dev
->mode_config
.num_overlay_plane
--;
1258 drm_modeset_unlock_all(dev
);
1260 WARN_ON(plane
->state
&& !plane
->funcs
->atomic_destroy_state
);
1261 if (plane
->state
&& plane
->funcs
->atomic_destroy_state
)
1262 plane
->funcs
->atomic_destroy_state(plane
, plane
->state
);
1264 memset(plane
, 0, sizeof(*plane
));
1266 EXPORT_SYMBOL(drm_plane_cleanup
);
1269 * drm_plane_index - find the index of a registered plane
1270 * @plane: plane to find index for
1272 * Given a registered plane, return the index of that CRTC within a DRM
1273 * device's list of planes.
1275 unsigned int drm_plane_index(struct drm_plane
*plane
)
1277 unsigned int index
= 0;
1278 struct drm_plane
*tmp
;
1280 list_for_each_entry(tmp
, &plane
->dev
->mode_config
.plane_list
, head
) {
1289 EXPORT_SYMBOL(drm_plane_index
);
1292 * drm_plane_force_disable - Forcibly disable a plane
1293 * @plane: plane to disable
1295 * Forces the plane to be disabled.
1297 * Used when the plane's current framebuffer is destroyed,
1298 * and when restoring fbdev mode.
1300 void drm_plane_force_disable(struct drm_plane
*plane
)
1307 plane
->old_fb
= plane
->fb
;
1308 ret
= plane
->funcs
->disable_plane(plane
);
1310 DRM_ERROR("failed to disable plane with busy fb\n");
1311 plane
->old_fb
= NULL
;
1314 /* disconnect the plane from the fb and crtc: */
1315 drm_framebuffer_unreference(plane
->old_fb
);
1316 plane
->old_fb
= NULL
;
1320 EXPORT_SYMBOL(drm_plane_force_disable
);
1322 static int drm_mode_create_standard_properties(struct drm_device
*dev
)
1324 struct drm_property
*prop
;
1327 * Standard properties (apply to all connectors)
1329 prop
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1330 DRM_MODE_PROP_IMMUTABLE
,
1334 dev
->mode_config
.edid_property
= prop
;
1336 prop
= drm_property_create_enum(dev
, 0,
1337 "DPMS", drm_dpms_enum_list
,
1338 ARRAY_SIZE(drm_dpms_enum_list
));
1341 dev
->mode_config
.dpms_property
= prop
;
1343 prop
= drm_property_create(dev
,
1344 DRM_MODE_PROP_BLOB
|
1345 DRM_MODE_PROP_IMMUTABLE
,
1349 dev
->mode_config
.path_property
= prop
;
1351 prop
= drm_property_create(dev
,
1352 DRM_MODE_PROP_BLOB
|
1353 DRM_MODE_PROP_IMMUTABLE
,
1357 dev
->mode_config
.tile_property
= prop
;
1359 prop
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1360 "type", drm_plane_type_enum_list
,
1361 ARRAY_SIZE(drm_plane_type_enum_list
));
1364 dev
->mode_config
.plane_type_property
= prop
;
1366 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1367 "SRC_X", 0, UINT_MAX
);
1370 dev
->mode_config
.prop_src_x
= prop
;
1372 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1373 "SRC_Y", 0, UINT_MAX
);
1376 dev
->mode_config
.prop_src_y
= prop
;
1378 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1379 "SRC_W", 0, UINT_MAX
);
1382 dev
->mode_config
.prop_src_w
= prop
;
1384 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1385 "SRC_H", 0, UINT_MAX
);
1388 dev
->mode_config
.prop_src_h
= prop
;
1390 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1391 "CRTC_X", INT_MIN
, INT_MAX
);
1394 dev
->mode_config
.prop_crtc_x
= prop
;
1396 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1397 "CRTC_Y", INT_MIN
, INT_MAX
);
1400 dev
->mode_config
.prop_crtc_y
= prop
;
1402 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1403 "CRTC_W", 0, INT_MAX
);
1406 dev
->mode_config
.prop_crtc_w
= prop
;
1408 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1409 "CRTC_H", 0, INT_MAX
);
1412 dev
->mode_config
.prop_crtc_h
= prop
;
1414 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1415 "FB_ID", DRM_MODE_OBJECT_FB
);
1418 dev
->mode_config
.prop_fb_id
= prop
;
1420 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1421 "CRTC_ID", DRM_MODE_OBJECT_CRTC
);
1424 dev
->mode_config
.prop_crtc_id
= prop
;
1426 prop
= drm_property_create_bool(dev
, DRM_MODE_PROP_ATOMIC
,
1430 dev
->mode_config
.prop_active
= prop
;
1436 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1439 * Called by a driver the first time a DVI-I connector is made.
1441 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1443 struct drm_property
*dvi_i_selector
;
1444 struct drm_property
*dvi_i_subconnector
;
1446 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1450 drm_property_create_enum(dev
, 0,
1451 "select subconnector",
1452 drm_dvi_i_select_enum_list
,
1453 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1454 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1456 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1458 drm_dvi_i_subconnector_enum_list
,
1459 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1460 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1464 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1467 * drm_create_tv_properties - create TV specific connector properties
1469 * @num_modes: number of different TV formats (modes) supported
1470 * @modes: array of pointers to strings containing name of each format
1472 * Called by a driver's TV initialization routine, this function creates
1473 * the TV specific connector properties for a given device. Caller is
1474 * responsible for allocating a list of format names and passing them to
1477 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1478 unsigned int num_modes
,
1481 struct drm_property
*tv_selector
;
1482 struct drm_property
*tv_subconnector
;
1485 if (dev
->mode_config
.tv_select_subconnector_property
)
1489 * Basic connector properties
1491 tv_selector
= drm_property_create_enum(dev
, 0,
1492 "select subconnector",
1493 drm_tv_select_enum_list
,
1494 ARRAY_SIZE(drm_tv_select_enum_list
));
1495 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1498 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1500 drm_tv_subconnector_enum_list
,
1501 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1502 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1505 * Other, TV specific properties: margins & TV modes.
1507 dev
->mode_config
.tv_left_margin_property
=
1508 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1510 dev
->mode_config
.tv_right_margin_property
=
1511 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1513 dev
->mode_config
.tv_top_margin_property
=
1514 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1516 dev
->mode_config
.tv_bottom_margin_property
=
1517 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1519 dev
->mode_config
.tv_mode_property
=
1520 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1522 for (i
= 0; i
< num_modes
; i
++)
1523 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1526 dev
->mode_config
.tv_brightness_property
=
1527 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1529 dev
->mode_config
.tv_contrast_property
=
1530 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1532 dev
->mode_config
.tv_flicker_reduction_property
=
1533 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1535 dev
->mode_config
.tv_overscan_property
=
1536 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1538 dev
->mode_config
.tv_saturation_property
=
1539 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1541 dev
->mode_config
.tv_hue_property
=
1542 drm_property_create_range(dev
, 0, "hue", 0, 100);
1546 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1549 * drm_mode_create_scaling_mode_property - create scaling mode property
1552 * Called by a driver the first time it's needed, must be attached to desired
1555 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1557 struct drm_property
*scaling_mode
;
1559 if (dev
->mode_config
.scaling_mode_property
)
1563 drm_property_create_enum(dev
, 0, "scaling mode",
1564 drm_scaling_mode_enum_list
,
1565 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1567 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1571 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1574 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1577 * Called by a driver the first time it's needed, must be attached to desired
1581 * Zero on success, negative errno on failure.
1583 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1585 if (dev
->mode_config
.aspect_ratio_property
)
1588 dev
->mode_config
.aspect_ratio_property
=
1589 drm_property_create_enum(dev
, 0, "aspect ratio",
1590 drm_aspect_ratio_enum_list
,
1591 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1593 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1598 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1601 * drm_mode_create_dirty_property - create dirty property
1604 * Called by a driver the first time it's needed, must be attached to desired
1607 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1609 struct drm_property
*dirty_info
;
1611 if (dev
->mode_config
.dirty_info_property
)
1615 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1617 drm_dirty_info_enum_list
,
1618 ARRAY_SIZE(drm_dirty_info_enum_list
));
1619 dev
->mode_config
.dirty_info_property
= dirty_info
;
1623 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1626 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1629 * Create the the suggested x/y offset property for connectors.
1631 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1633 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1636 dev
->mode_config
.suggested_x_property
=
1637 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1639 dev
->mode_config
.suggested_y_property
=
1640 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1642 if (dev
->mode_config
.suggested_x_property
== NULL
||
1643 dev
->mode_config
.suggested_y_property
== NULL
)
1647 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1649 static int drm_mode_group_init(struct drm_device
*dev
, struct drm_mode_group
*group
)
1651 uint32_t total_objects
= 0;
1653 total_objects
+= dev
->mode_config
.num_crtc
;
1654 total_objects
+= dev
->mode_config
.num_connector
;
1655 total_objects
+= dev
->mode_config
.num_encoder
;
1657 group
->id_list
= kcalloc(total_objects
, sizeof(uint32_t), GFP_KERNEL
);
1658 if (!group
->id_list
)
1661 group
->num_crtcs
= 0;
1662 group
->num_connectors
= 0;
1663 group
->num_encoders
= 0;
1667 void drm_mode_group_destroy(struct drm_mode_group
*group
)
1669 kfree(group
->id_list
);
1670 group
->id_list
= NULL
;
1674 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1675 * the drm core's responsibility to set up mode control groups.
1677 int drm_mode_group_init_legacy_group(struct drm_device
*dev
,
1678 struct drm_mode_group
*group
)
1680 struct drm_crtc
*crtc
;
1681 struct drm_encoder
*encoder
;
1682 struct drm_connector
*connector
;
1685 ret
= drm_mode_group_init(dev
, group
);
1689 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
1690 group
->id_list
[group
->num_crtcs
++] = crtc
->base
.id
;
1692 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
1693 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
++] =
1696 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1697 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1698 group
->num_connectors
++] = connector
->base
.id
;
1702 EXPORT_SYMBOL(drm_mode_group_init_legacy_group
);
1704 void drm_reinit_primary_mode_group(struct drm_device
*dev
)
1706 drm_modeset_lock_all(dev
);
1707 drm_mode_group_destroy(&dev
->primary
->mode_group
);
1708 drm_mode_group_init_legacy_group(dev
, &dev
->primary
->mode_group
);
1709 drm_modeset_unlock_all(dev
);
1711 EXPORT_SYMBOL(drm_reinit_primary_mode_group
);
1714 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1715 * @out: drm_mode_modeinfo struct to return to the user
1716 * @in: drm_display_mode to use
1718 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1721 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo
*out
,
1722 const struct drm_display_mode
*in
)
1724 WARN(in
->hdisplay
> USHRT_MAX
|| in
->hsync_start
> USHRT_MAX
||
1725 in
->hsync_end
> USHRT_MAX
|| in
->htotal
> USHRT_MAX
||
1726 in
->hskew
> USHRT_MAX
|| in
->vdisplay
> USHRT_MAX
||
1727 in
->vsync_start
> USHRT_MAX
|| in
->vsync_end
> USHRT_MAX
||
1728 in
->vtotal
> USHRT_MAX
|| in
->vscan
> USHRT_MAX
,
1729 "timing values too large for mode info\n");
1731 out
->clock
= in
->clock
;
1732 out
->hdisplay
= in
->hdisplay
;
1733 out
->hsync_start
= in
->hsync_start
;
1734 out
->hsync_end
= in
->hsync_end
;
1735 out
->htotal
= in
->htotal
;
1736 out
->hskew
= in
->hskew
;
1737 out
->vdisplay
= in
->vdisplay
;
1738 out
->vsync_start
= in
->vsync_start
;
1739 out
->vsync_end
= in
->vsync_end
;
1740 out
->vtotal
= in
->vtotal
;
1741 out
->vscan
= in
->vscan
;
1742 out
->vrefresh
= in
->vrefresh
;
1743 out
->flags
= in
->flags
;
1744 out
->type
= in
->type
;
1745 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1746 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1750 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1751 * @out: drm_display_mode to return to the user
1752 * @in: drm_mode_modeinfo to use
1754 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1758 * Zero on success, negative errno on failure.
1760 static int drm_crtc_convert_umode(struct drm_display_mode
*out
,
1761 const struct drm_mode_modeinfo
*in
)
1763 if (in
->clock
> INT_MAX
|| in
->vrefresh
> INT_MAX
)
1766 if ((in
->flags
& DRM_MODE_FLAG_3D_MASK
) > DRM_MODE_FLAG_3D_MAX
)
1769 out
->clock
= in
->clock
;
1770 out
->hdisplay
= in
->hdisplay
;
1771 out
->hsync_start
= in
->hsync_start
;
1772 out
->hsync_end
= in
->hsync_end
;
1773 out
->htotal
= in
->htotal
;
1774 out
->hskew
= in
->hskew
;
1775 out
->vdisplay
= in
->vdisplay
;
1776 out
->vsync_start
= in
->vsync_start
;
1777 out
->vsync_end
= in
->vsync_end
;
1778 out
->vtotal
= in
->vtotal
;
1779 out
->vscan
= in
->vscan
;
1780 out
->vrefresh
= in
->vrefresh
;
1781 out
->flags
= in
->flags
;
1782 out
->type
= in
->type
;
1783 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1784 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1790 * drm_mode_getresources - get graphics configuration
1791 * @dev: drm device for the ioctl
1792 * @data: data pointer for the ioctl
1793 * @file_priv: drm file for the ioctl call
1795 * Construct a set of configuration description structures and return
1796 * them to the user, including CRTC, connector and framebuffer configuration.
1798 * Called by the user via ioctl.
1801 * Zero on success, negative errno on failure.
1803 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1804 struct drm_file
*file_priv
)
1806 struct drm_mode_card_res
*card_res
= data
;
1807 struct list_head
*lh
;
1808 struct drm_framebuffer
*fb
;
1809 struct drm_connector
*connector
;
1810 struct drm_crtc
*crtc
;
1811 struct drm_encoder
*encoder
;
1813 int connector_count
= 0;
1816 int encoder_count
= 0;
1818 uint32_t __user
*fb_id
;
1819 uint32_t __user
*crtc_id
;
1820 uint32_t __user
*connector_id
;
1821 uint32_t __user
*encoder_id
;
1822 struct drm_mode_group
*mode_group
;
1824 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1828 mutex_lock(&file_priv
->fbs_lock
);
1830 * For the non-control nodes we need to limit the list of resources
1831 * by IDs in the group list for this node
1833 list_for_each(lh
, &file_priv
->fbs
)
1836 /* handle this in 4 parts */
1838 if (card_res
->count_fbs
>= fb_count
) {
1840 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1841 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1842 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1843 mutex_unlock(&file_priv
->fbs_lock
);
1849 card_res
->count_fbs
= fb_count
;
1850 mutex_unlock(&file_priv
->fbs_lock
);
1852 /* mode_config.mutex protects the connector list against e.g. DP MST
1853 * connector hot-adding. CRTC/Plane lists are invariant. */
1854 mutex_lock(&dev
->mode_config
.mutex
);
1855 if (!drm_is_primary_client(file_priv
)) {
1858 list_for_each(lh
, &dev
->mode_config
.crtc_list
)
1861 list_for_each(lh
, &dev
->mode_config
.connector_list
)
1864 list_for_each(lh
, &dev
->mode_config
.encoder_list
)
1868 mode_group
= &file_priv
->master
->minor
->mode_group
;
1869 crtc_count
= mode_group
->num_crtcs
;
1870 connector_count
= mode_group
->num_connectors
;
1871 encoder_count
= mode_group
->num_encoders
;
1874 card_res
->max_height
= dev
->mode_config
.max_height
;
1875 card_res
->min_height
= dev
->mode_config
.min_height
;
1876 card_res
->max_width
= dev
->mode_config
.max_width
;
1877 card_res
->min_width
= dev
->mode_config
.min_width
;
1880 if (card_res
->count_crtcs
>= crtc_count
) {
1882 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1884 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
,
1886 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1887 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1894 for (i
= 0; i
< mode_group
->num_crtcs
; i
++) {
1895 if (put_user(mode_group
->id_list
[i
],
1896 crtc_id
+ copied
)) {
1904 card_res
->count_crtcs
= crtc_count
;
1907 if (card_res
->count_encoders
>= encoder_count
) {
1909 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1911 list_for_each_entry(encoder
,
1912 &dev
->mode_config
.encoder_list
,
1914 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1916 if (put_user(encoder
->base
.id
, encoder_id
+
1924 for (i
= mode_group
->num_crtcs
; i
< mode_group
->num_crtcs
+ mode_group
->num_encoders
; i
++) {
1925 if (put_user(mode_group
->id_list
[i
],
1926 encoder_id
+ copied
)) {
1935 card_res
->count_encoders
= encoder_count
;
1938 if (card_res
->count_connectors
>= connector_count
) {
1940 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1942 list_for_each_entry(connector
,
1943 &dev
->mode_config
.connector_list
,
1945 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1948 if (put_user(connector
->base
.id
,
1949 connector_id
+ copied
)) {
1956 int start
= mode_group
->num_crtcs
+
1957 mode_group
->num_encoders
;
1958 for (i
= start
; i
< start
+ mode_group
->num_connectors
; i
++) {
1959 if (put_user(mode_group
->id_list
[i
],
1960 connector_id
+ copied
)) {
1968 card_res
->count_connectors
= connector_count
;
1970 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1971 card_res
->count_connectors
, card_res
->count_encoders
);
1974 mutex_unlock(&dev
->mode_config
.mutex
);
1979 * drm_mode_getcrtc - get CRTC configuration
1980 * @dev: drm device for the ioctl
1981 * @data: data pointer for the ioctl
1982 * @file_priv: drm file for the ioctl call
1984 * Construct a CRTC configuration structure to return to the user.
1986 * Called by the user via ioctl.
1989 * Zero on success, negative errno on failure.
1991 int drm_mode_getcrtc(struct drm_device
*dev
,
1992 void *data
, struct drm_file
*file_priv
)
1994 struct drm_mode_crtc
*crtc_resp
= data
;
1995 struct drm_crtc
*crtc
;
1997 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2000 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
2004 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
2005 crtc_resp
->gamma_size
= crtc
->gamma_size
;
2006 if (crtc
->primary
->fb
)
2007 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
2009 crtc_resp
->fb_id
= 0;
2012 crtc_resp
->x
= crtc
->primary
->state
->src_x
>> 16;
2013 crtc_resp
->y
= crtc
->primary
->state
->src_y
>> 16;
2014 if (crtc
->state
->enable
) {
2015 drm_crtc_convert_to_umode(&crtc_resp
->mode
, &crtc
->state
->mode
);
2016 crtc_resp
->mode_valid
= 1;
2019 crtc_resp
->mode_valid
= 0;
2022 crtc_resp
->x
= crtc
->x
;
2023 crtc_resp
->y
= crtc
->y
;
2024 if (crtc
->enabled
) {
2025 drm_crtc_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
2026 crtc_resp
->mode_valid
= 1;
2029 crtc_resp
->mode_valid
= 0;
2032 drm_modeset_unlock_crtc(crtc
);
2037 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
2038 const struct drm_file
*file_priv
)
2041 * If user-space hasn't configured the driver to expose the stereo 3D
2042 * modes, don't expose them.
2044 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
2050 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
2052 /* For atomic drivers only state objects are synchronously updated and
2053 * protected by modeset locks, so check those first. */
2054 if (connector
->state
)
2055 return connector
->state
->best_encoder
;
2056 return connector
->encoder
;
2059 /* helper for getconnector and getproperties ioctls */
2060 static int get_properties(struct drm_mode_object
*obj
, bool atomic
,
2061 uint32_t __user
*prop_ptr
, uint64_t __user
*prop_values
,
2062 uint32_t *arg_count_props
)
2067 props_count
= obj
->properties
->count
;
2069 props_count
-= obj
->properties
->atomic_count
;
2071 if ((*arg_count_props
>= props_count
) && props_count
) {
2072 for (i
= 0, copied
= 0; copied
< props_count
; i
++) {
2073 struct drm_property
*prop
= obj
->properties
->properties
[i
];
2076 if ((prop
->flags
& DRM_MODE_PROP_ATOMIC
) && !atomic
)
2079 ret
= drm_object_property_get_value(obj
, prop
, &val
);
2083 if (put_user(prop
->base
.id
, prop_ptr
+ copied
))
2086 if (put_user(val
, prop_values
+ copied
))
2092 *arg_count_props
= props_count
;
2098 * drm_mode_getconnector - get connector configuration
2099 * @dev: drm device for the ioctl
2100 * @data: data pointer for the ioctl
2101 * @file_priv: drm file for the ioctl call
2103 * Construct a connector configuration structure to return to the user.
2105 * Called by the user via ioctl.
2108 * Zero on success, negative errno on failure.
2110 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
2111 struct drm_file
*file_priv
)
2113 struct drm_mode_get_connector
*out_resp
= data
;
2114 struct drm_connector
*connector
;
2115 struct drm_encoder
*encoder
;
2116 struct drm_display_mode
*mode
;
2118 int encoders_count
= 0;
2122 struct drm_mode_modeinfo u_mode
;
2123 struct drm_mode_modeinfo __user
*mode_ptr
;
2124 uint32_t __user
*encoder_ptr
;
2126 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2129 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
2131 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
2133 mutex_lock(&dev
->mode_config
.mutex
);
2135 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
2141 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++)
2142 if (connector
->encoder_ids
[i
] != 0)
2145 if (out_resp
->count_modes
== 0) {
2146 connector
->funcs
->fill_modes(connector
,
2147 dev
->mode_config
.max_width
,
2148 dev
->mode_config
.max_height
);
2151 /* delayed so we get modes regardless of pre-fill_modes state */
2152 list_for_each_entry(mode
, &connector
->modes
, head
)
2153 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2156 out_resp
->connector_id
= connector
->base
.id
;
2157 out_resp
->connector_type
= connector
->connector_type
;
2158 out_resp
->connector_type_id
= connector
->connector_type_id
;
2159 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2160 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2161 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2162 out_resp
->connection
= connector
->status
;
2164 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2165 encoder
= drm_connector_get_encoder(connector
);
2167 out_resp
->encoder_id
= encoder
->base
.id
;
2169 out_resp
->encoder_id
= 0;
2172 * This ioctl is called twice, once to determine how much space is
2173 * needed, and the 2nd time to fill it.
2175 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2177 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2178 list_for_each_entry(mode
, &connector
->modes
, head
) {
2179 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2182 drm_crtc_convert_to_umode(&u_mode
, mode
);
2183 if (copy_to_user(mode_ptr
+ copied
,
2184 &u_mode
, sizeof(u_mode
))) {
2191 out_resp
->count_modes
= mode_count
;
2193 ret
= get_properties(&connector
->base
, file_priv
->atomic
,
2194 (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
),
2195 (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
),
2196 &out_resp
->count_props
);
2200 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2202 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2203 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2204 if (connector
->encoder_ids
[i
] != 0) {
2205 if (put_user(connector
->encoder_ids
[i
],
2206 encoder_ptr
+ copied
)) {
2214 out_resp
->count_encoders
= encoders_count
;
2217 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2220 mutex_unlock(&dev
->mode_config
.mutex
);
2225 static struct drm_crtc
*drm_encoder_get_crtc(struct drm_encoder
*encoder
)
2227 struct drm_connector
*connector
;
2228 struct drm_device
*dev
= encoder
->dev
;
2229 bool uses_atomic
= false;
2231 /* For atomic drivers only state objects are synchronously updated and
2232 * protected by modeset locks, so check those first. */
2233 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
2234 if (!connector
->state
)
2239 if (connector
->state
->best_encoder
!= encoder
)
2242 return connector
->state
->crtc
;
2245 /* Don't return stale data (e.g. pending async disable). */
2249 return encoder
->crtc
;
2253 * drm_mode_getencoder - get encoder configuration
2254 * @dev: drm device for the ioctl
2255 * @data: data pointer for the ioctl
2256 * @file_priv: drm file for the ioctl call
2258 * Construct a encoder configuration structure to return to the user.
2260 * Called by the user via ioctl.
2263 * Zero on success, negative errno on failure.
2265 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2266 struct drm_file
*file_priv
)
2268 struct drm_mode_get_encoder
*enc_resp
= data
;
2269 struct drm_encoder
*encoder
;
2270 struct drm_crtc
*crtc
;
2272 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2275 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2279 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2280 crtc
= drm_encoder_get_crtc(encoder
);
2282 enc_resp
->crtc_id
= crtc
->base
.id
;
2284 enc_resp
->crtc_id
= 0;
2285 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2287 enc_resp
->encoder_type
= encoder
->encoder_type
;
2288 enc_resp
->encoder_id
= encoder
->base
.id
;
2289 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2290 enc_resp
->possible_clones
= encoder
->possible_clones
;
2296 * drm_mode_getplane_res - enumerate all plane resources
2299 * @file_priv: DRM file info
2301 * Construct a list of plane ids to return to the user.
2303 * Called by the user via ioctl.
2306 * Zero on success, negative errno on failure.
2308 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2309 struct drm_file
*file_priv
)
2311 struct drm_mode_get_plane_res
*plane_resp
= data
;
2312 struct drm_mode_config
*config
;
2313 struct drm_plane
*plane
;
2314 uint32_t __user
*plane_ptr
;
2316 unsigned num_planes
;
2318 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2321 config
= &dev
->mode_config
;
2323 if (file_priv
->universal_planes
)
2324 num_planes
= config
->num_total_plane
;
2326 num_planes
= config
->num_overlay_plane
;
2329 * This ioctl is called twice, once to determine how much space is
2330 * needed, and the 2nd time to fill it.
2333 (plane_resp
->count_planes
>= num_planes
)) {
2334 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2336 /* Plane lists are invariant, no locking needed. */
2337 list_for_each_entry(plane
, &config
->plane_list
, head
) {
2339 * Unless userspace set the 'universal planes'
2340 * capability bit, only advertise overlays.
2342 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2343 !file_priv
->universal_planes
)
2346 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2351 plane_resp
->count_planes
= num_planes
;
2357 * drm_mode_getplane - get plane configuration
2360 * @file_priv: DRM file info
2362 * Construct a plane configuration structure to return to the user.
2364 * Called by the user via ioctl.
2367 * Zero on success, negative errno on failure.
2369 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2370 struct drm_file
*file_priv
)
2372 struct drm_mode_get_plane
*plane_resp
= data
;
2373 struct drm_plane
*plane
;
2374 uint32_t __user
*format_ptr
;
2376 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2379 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2383 drm_modeset_lock(&plane
->mutex
, NULL
);
2385 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2387 plane_resp
->crtc_id
= 0;
2390 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2392 plane_resp
->fb_id
= 0;
2393 drm_modeset_unlock(&plane
->mutex
);
2395 plane_resp
->plane_id
= plane
->base
.id
;
2396 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2397 plane_resp
->gamma_size
= 0;
2400 * This ioctl is called twice, once to determine how much space is
2401 * needed, and the 2nd time to fill it.
2403 if (plane
->format_count
&&
2404 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2405 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2406 if (copy_to_user(format_ptr
,
2407 plane
->format_types
,
2408 sizeof(uint32_t) * plane
->format_count
)) {
2412 plane_resp
->count_format_types
= plane
->format_count
;
2418 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2419 * @plane: plane to check for format support
2420 * @format: the pixel format
2423 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2426 int drm_plane_check_pixel_format(const struct drm_plane
*plane
, u32 format
)
2430 for (i
= 0; i
< plane
->format_count
; i
++) {
2431 if (format
== plane
->format_types
[i
])
2439 * setplane_internal - setplane handler for internal callers
2441 * Note that we assume an extra reference has already been taken on fb. If the
2442 * update fails, this reference will be dropped before return; if it succeeds,
2443 * the previous framebuffer (if any) will be unreferenced instead.
2445 * src_{x,y,w,h} are provided in 16.16 fixed point format
2447 static int __setplane_internal(struct drm_plane
*plane
,
2448 struct drm_crtc
*crtc
,
2449 struct drm_framebuffer
*fb
,
2450 int32_t crtc_x
, int32_t crtc_y
,
2451 uint32_t crtc_w
, uint32_t crtc_h
,
2452 /* src_{x,y,w,h} values are 16.16 fixed point */
2453 uint32_t src_x
, uint32_t src_y
,
2454 uint32_t src_w
, uint32_t src_h
)
2457 unsigned int fb_width
, fb_height
;
2459 /* No fb means shut it down */
2461 plane
->old_fb
= plane
->fb
;
2462 ret
= plane
->funcs
->disable_plane(plane
);
2467 plane
->old_fb
= NULL
;
2472 /* Check whether this plane is usable on this CRTC */
2473 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2474 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2479 /* Check whether this plane supports the fb pixel format. */
2480 ret
= drm_plane_check_pixel_format(plane
, fb
->pixel_format
);
2482 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2483 drm_get_format_name(fb
->pixel_format
));
2487 /* Give drivers some help against integer overflows */
2488 if (crtc_w
> INT_MAX
||
2489 crtc_x
> INT_MAX
- (int32_t) crtc_w
||
2491 crtc_y
> INT_MAX
- (int32_t) crtc_h
) {
2492 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2493 crtc_w
, crtc_h
, crtc_x
, crtc_y
);
2498 fb_width
= fb
->width
<< 16;
2499 fb_height
= fb
->height
<< 16;
2501 /* Make sure source coordinates are inside the fb. */
2502 if (src_w
> fb_width
||
2503 src_x
> fb_width
- src_w
||
2504 src_h
> fb_height
||
2505 src_y
> fb_height
- src_h
) {
2506 DRM_DEBUG_KMS("Invalid source coordinates "
2507 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2508 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2509 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2510 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2511 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2516 plane
->old_fb
= plane
->fb
;
2517 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2518 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2519 src_x
, src_y
, src_w
, src_h
);
2525 plane
->old_fb
= NULL
;
2530 drm_framebuffer_unreference(fb
);
2532 drm_framebuffer_unreference(plane
->old_fb
);
2533 plane
->old_fb
= NULL
;
2538 static int setplane_internal(struct drm_plane
*plane
,
2539 struct drm_crtc
*crtc
,
2540 struct drm_framebuffer
*fb
,
2541 int32_t crtc_x
, int32_t crtc_y
,
2542 uint32_t crtc_w
, uint32_t crtc_h
,
2543 /* src_{x,y,w,h} values are 16.16 fixed point */
2544 uint32_t src_x
, uint32_t src_y
,
2545 uint32_t src_w
, uint32_t src_h
)
2549 drm_modeset_lock_all(plane
->dev
);
2550 ret
= __setplane_internal(plane
, crtc
, fb
,
2551 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2552 src_x
, src_y
, src_w
, src_h
);
2553 drm_modeset_unlock_all(plane
->dev
);
2559 * drm_mode_setplane - configure a plane's configuration
2561 * @data: ioctl data*
2562 * @file_priv: DRM file info
2564 * Set plane configuration, including placement, fb, scaling, and other factors.
2565 * Or pass a NULL fb to disable (planes may be disabled without providing a
2569 * Zero on success, negative errno on failure.
2571 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2572 struct drm_file
*file_priv
)
2574 struct drm_mode_set_plane
*plane_req
= data
;
2575 struct drm_plane
*plane
;
2576 struct drm_crtc
*crtc
= NULL
;
2577 struct drm_framebuffer
*fb
= NULL
;
2579 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2583 * First, find the plane, crtc, and fb objects. If not available,
2584 * we don't bother to call the driver.
2586 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
2588 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2589 plane_req
->plane_id
);
2593 if (plane_req
->fb_id
) {
2594 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2596 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2601 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
2603 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2604 plane_req
->crtc_id
);
2610 * setplane_internal will take care of deref'ing either the old or new
2611 * framebuffer depending on success.
2613 return setplane_internal(plane
, crtc
, fb
,
2614 plane_req
->crtc_x
, plane_req
->crtc_y
,
2615 plane_req
->crtc_w
, plane_req
->crtc_h
,
2616 plane_req
->src_x
, plane_req
->src_y
,
2617 plane_req
->src_w
, plane_req
->src_h
);
2621 * drm_mode_set_config_internal - helper to call ->set_config
2622 * @set: modeset config to set
2624 * This is a little helper to wrap internal calls to the ->set_config driver
2625 * interface. The only thing it adds is correct refcounting dance.
2628 * Zero on success, negative errno on failure.
2630 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2632 struct drm_crtc
*crtc
= set
->crtc
;
2633 struct drm_framebuffer
*fb
;
2634 struct drm_crtc
*tmp
;
2638 * NOTE: ->set_config can also disable other crtcs (if we steal all
2639 * connectors from it), hence we need to refcount the fbs across all
2640 * crtcs. Atomic modeset will have saner semantics ...
2642 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
)
2643 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2647 ret
= crtc
->funcs
->set_config(set
);
2649 crtc
->primary
->crtc
= crtc
;
2650 crtc
->primary
->fb
= fb
;
2653 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
2654 if (tmp
->primary
->fb
)
2655 drm_framebuffer_reference(tmp
->primary
->fb
);
2656 if (tmp
->primary
->old_fb
)
2657 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2658 tmp
->primary
->old_fb
= NULL
;
2663 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2666 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2667 * @mode: mode to query
2668 * @hdisplay: hdisplay value to fill in
2669 * @vdisplay: vdisplay value to fill in
2671 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2672 * the appropriate layout.
2674 void drm_crtc_get_hv_timing(const struct drm_display_mode
*mode
,
2675 int *hdisplay
, int *vdisplay
)
2677 struct drm_display_mode adjusted
;
2679 drm_mode_copy(&adjusted
, mode
);
2680 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE_ONLY
);
2681 *hdisplay
= adjusted
.crtc_hdisplay
;
2682 *vdisplay
= adjusted
.crtc_vdisplay
;
2684 EXPORT_SYMBOL(drm_crtc_get_hv_timing
);
2687 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2689 * @crtc: CRTC that framebuffer will be displayed on
2692 * @mode: mode that framebuffer will be displayed under
2693 * @fb: framebuffer to check size of
2695 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2697 const struct drm_display_mode
*mode
,
2698 const struct drm_framebuffer
*fb
)
2701 int hdisplay
, vdisplay
;
2703 drm_crtc_get_hv_timing(mode
, &hdisplay
, &vdisplay
);
2705 if (crtc
->invert_dimensions
)
2706 swap(hdisplay
, vdisplay
);
2708 if (hdisplay
> fb
->width
||
2709 vdisplay
> fb
->height
||
2710 x
> fb
->width
- hdisplay
||
2711 y
> fb
->height
- vdisplay
) {
2712 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2713 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2714 crtc
->invert_dimensions
? " (inverted)" : "");
2720 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2723 * drm_mode_setcrtc - set CRTC configuration
2724 * @dev: drm device for the ioctl
2725 * @data: data pointer for the ioctl
2726 * @file_priv: drm file for the ioctl call
2728 * Build a new CRTC configuration based on user request.
2730 * Called by the user via ioctl.
2733 * Zero on success, negative errno on failure.
2735 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2736 struct drm_file
*file_priv
)
2738 struct drm_mode_config
*config
= &dev
->mode_config
;
2739 struct drm_mode_crtc
*crtc_req
= data
;
2740 struct drm_crtc
*crtc
;
2741 struct drm_connector
**connector_set
= NULL
, *connector
;
2742 struct drm_framebuffer
*fb
= NULL
;
2743 struct drm_display_mode
*mode
= NULL
;
2744 struct drm_mode_set set
;
2745 uint32_t __user
*set_connectors_ptr
;
2749 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2752 /* For some reason crtc x/y offsets are signed internally. */
2753 if (crtc_req
->x
> INT_MAX
|| crtc_req
->y
> INT_MAX
)
2756 drm_modeset_lock_all(dev
);
2757 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2759 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2763 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2765 if (crtc_req
->mode_valid
) {
2766 /* If we have a mode we need a framebuffer. */
2767 /* If we pass -1, set the mode with the currently bound fb */
2768 if (crtc_req
->fb_id
== -1) {
2769 if (!crtc
->primary
->fb
) {
2770 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2774 fb
= crtc
->primary
->fb
;
2775 /* Make refcounting symmetric with the lookup path. */
2776 drm_framebuffer_reference(fb
);
2778 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2780 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2787 mode
= drm_mode_create(dev
);
2793 ret
= drm_crtc_convert_umode(mode
, &crtc_req
->mode
);
2795 DRM_DEBUG_KMS("Invalid mode\n");
2799 mode
->status
= drm_mode_validate_basic(mode
);
2800 if (mode
->status
!= MODE_OK
) {
2805 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2808 * Check whether the primary plane supports the fb pixel format.
2809 * Drivers not implementing the universal planes API use a
2810 * default formats list provided by the DRM core which doesn't
2811 * match real hardware capabilities. Skip the check in that
2814 if (!crtc
->primary
->format_default
) {
2815 ret
= drm_plane_check_pixel_format(crtc
->primary
,
2818 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2819 drm_get_format_name(fb
->pixel_format
));
2824 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2831 if (crtc_req
->count_connectors
== 0 && mode
) {
2832 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2837 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2838 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2839 crtc_req
->count_connectors
);
2844 if (crtc_req
->count_connectors
> 0) {
2847 /* Avoid unbounded kernel memory allocation */
2848 if (crtc_req
->count_connectors
> config
->num_connector
) {
2853 connector_set
= kmalloc_array(crtc_req
->count_connectors
,
2854 sizeof(struct drm_connector
*),
2856 if (!connector_set
) {
2861 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2862 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2863 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2868 connector
= drm_connector_find(dev
, out_id
);
2870 DRM_DEBUG_KMS("Connector id %d unknown\n",
2875 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2879 connector_set
[i
] = connector
;
2884 set
.x
= crtc_req
->x
;
2885 set
.y
= crtc_req
->y
;
2887 set
.connectors
= connector_set
;
2888 set
.num_connectors
= crtc_req
->count_connectors
;
2890 ret
= drm_mode_set_config_internal(&set
);
2894 drm_framebuffer_unreference(fb
);
2896 kfree(connector_set
);
2897 drm_mode_destroy(dev
, mode
);
2898 drm_modeset_unlock_all(dev
);
2903 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2904 * universal plane handler call
2905 * @crtc: crtc to update cursor for
2906 * @req: data pointer for the ioctl
2907 * @file_priv: drm file for the ioctl call
2909 * Legacy cursor ioctl's work directly with driver buffer handles. To
2910 * translate legacy ioctl calls into universal plane handler calls, we need to
2911 * wrap the native buffer handle in a drm_framebuffer.
2913 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2914 * buffer with a pitch of 4*width; the universal plane interface should be used
2915 * directly in cases where the hardware can support other buffer settings and
2916 * userspace wants to make use of these capabilities.
2919 * Zero on success, negative errno on failure.
2921 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2922 struct drm_mode_cursor2
*req
,
2923 struct drm_file
*file_priv
)
2925 struct drm_device
*dev
= crtc
->dev
;
2926 struct drm_framebuffer
*fb
= NULL
;
2927 struct drm_mode_fb_cmd2 fbreq
= {
2928 .width
= req
->width
,
2929 .height
= req
->height
,
2930 .pixel_format
= DRM_FORMAT_ARGB8888
,
2931 .pitches
= { req
->width
* 4 },
2932 .handles
= { req
->handle
},
2934 int32_t crtc_x
, crtc_y
;
2935 uint32_t crtc_w
= 0, crtc_h
= 0;
2936 uint32_t src_w
= 0, src_h
= 0;
2939 BUG_ON(!crtc
->cursor
);
2940 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2943 * Obtain fb we'll be using (either new or existing) and take an extra
2944 * reference to it if fb != null. setplane will take care of dropping
2945 * the reference if the plane update fails.
2947 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2949 fb
= internal_framebuffer_create(dev
, &fbreq
, file_priv
);
2951 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2958 fb
= crtc
->cursor
->fb
;
2960 drm_framebuffer_reference(fb
);
2963 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2967 crtc_x
= crtc
->cursor_x
;
2968 crtc_y
= crtc
->cursor_y
;
2973 crtc_h
= fb
->height
;
2974 src_w
= fb
->width
<< 16;
2975 src_h
= fb
->height
<< 16;
2979 * setplane_internal will take care of deref'ing either the old or new
2980 * framebuffer depending on success.
2982 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2983 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2984 0, 0, src_w
, src_h
);
2986 /* Update successful; save new cursor position, if necessary */
2987 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2988 crtc
->cursor_x
= req
->x
;
2989 crtc
->cursor_y
= req
->y
;
2995 static int drm_mode_cursor_common(struct drm_device
*dev
,
2996 struct drm_mode_cursor2
*req
,
2997 struct drm_file
*file_priv
)
2999 struct drm_crtc
*crtc
;
3002 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3005 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
3008 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
3010 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
3015 * If this crtc has a universal cursor plane, call that plane's update
3016 * handler rather than using legacy cursor handlers.
3018 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
3020 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
3024 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
3025 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
3029 /* Turns off the cursor if handle is 0 */
3030 if (crtc
->funcs
->cursor_set2
)
3031 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
3032 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
3034 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
3035 req
->width
, req
->height
);
3038 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
3039 if (crtc
->funcs
->cursor_move
) {
3040 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
3047 drm_modeset_unlock_crtc(crtc
);
3055 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3056 * @dev: drm device for the ioctl
3057 * @data: data pointer for the ioctl
3058 * @file_priv: drm file for the ioctl call
3060 * Set the cursor configuration based on user request.
3062 * Called by the user via ioctl.
3065 * Zero on success, negative errno on failure.
3067 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
3068 void *data
, struct drm_file
*file_priv
)
3070 struct drm_mode_cursor
*req
= data
;
3071 struct drm_mode_cursor2 new_req
;
3073 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
3074 new_req
.hot_x
= new_req
.hot_y
= 0;
3076 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
3080 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3081 * @dev: drm device for the ioctl
3082 * @data: data pointer for the ioctl
3083 * @file_priv: drm file for the ioctl call
3085 * Set the cursor configuration based on user request. This implements the 2nd
3086 * version of the cursor ioctl, which allows userspace to additionally specify
3087 * the hotspot of the pointer.
3089 * Called by the user via ioctl.
3092 * Zero on success, negative errno on failure.
3094 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
3095 void *data
, struct drm_file
*file_priv
)
3097 struct drm_mode_cursor2
*req
= data
;
3099 return drm_mode_cursor_common(dev
, req
, file_priv
);
3103 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3104 * @bpp: bits per pixels
3105 * @depth: bit depth per pixel
3107 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3108 * Useful in fbdev emulation code, since that deals in those values.
3110 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
3116 fmt
= DRM_FORMAT_C8
;
3120 fmt
= DRM_FORMAT_XRGB1555
;
3122 fmt
= DRM_FORMAT_RGB565
;
3125 fmt
= DRM_FORMAT_RGB888
;
3129 fmt
= DRM_FORMAT_XRGB8888
;
3130 else if (depth
== 30)
3131 fmt
= DRM_FORMAT_XRGB2101010
;
3133 fmt
= DRM_FORMAT_ARGB8888
;
3136 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3137 fmt
= DRM_FORMAT_XRGB8888
;
3143 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
3146 * drm_mode_addfb - add an FB to the graphics configuration
3147 * @dev: drm device for the ioctl
3148 * @data: data pointer for the ioctl
3149 * @file_priv: drm file for the ioctl call
3151 * Add a new FB to the specified CRTC, given a user request. This is the
3152 * original addfb ioctl which only supported RGB formats.
3154 * Called by the user via ioctl.
3157 * Zero on success, negative errno on failure.
3159 int drm_mode_addfb(struct drm_device
*dev
,
3160 void *data
, struct drm_file
*file_priv
)
3162 struct drm_mode_fb_cmd
*or = data
;
3163 struct drm_mode_fb_cmd2 r
= {};
3166 /* convert to new format and call new ioctl */
3167 r
.fb_id
= or->fb_id
;
3168 r
.width
= or->width
;
3169 r
.height
= or->height
;
3170 r
.pitches
[0] = or->pitch
;
3171 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
3172 r
.handles
[0] = or->handle
;
3174 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
3178 or->fb_id
= r
.fb_id
;
3183 static int format_check(const struct drm_mode_fb_cmd2
*r
)
3185 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3189 case DRM_FORMAT_RGB332
:
3190 case DRM_FORMAT_BGR233
:
3191 case DRM_FORMAT_XRGB4444
:
3192 case DRM_FORMAT_XBGR4444
:
3193 case DRM_FORMAT_RGBX4444
:
3194 case DRM_FORMAT_BGRX4444
:
3195 case DRM_FORMAT_ARGB4444
:
3196 case DRM_FORMAT_ABGR4444
:
3197 case DRM_FORMAT_RGBA4444
:
3198 case DRM_FORMAT_BGRA4444
:
3199 case DRM_FORMAT_XRGB1555
:
3200 case DRM_FORMAT_XBGR1555
:
3201 case DRM_FORMAT_RGBX5551
:
3202 case DRM_FORMAT_BGRX5551
:
3203 case DRM_FORMAT_ARGB1555
:
3204 case DRM_FORMAT_ABGR1555
:
3205 case DRM_FORMAT_RGBA5551
:
3206 case DRM_FORMAT_BGRA5551
:
3207 case DRM_FORMAT_RGB565
:
3208 case DRM_FORMAT_BGR565
:
3209 case DRM_FORMAT_RGB888
:
3210 case DRM_FORMAT_BGR888
:
3211 case DRM_FORMAT_XRGB8888
:
3212 case DRM_FORMAT_XBGR8888
:
3213 case DRM_FORMAT_RGBX8888
:
3214 case DRM_FORMAT_BGRX8888
:
3215 case DRM_FORMAT_ARGB8888
:
3216 case DRM_FORMAT_ABGR8888
:
3217 case DRM_FORMAT_RGBA8888
:
3218 case DRM_FORMAT_BGRA8888
:
3219 case DRM_FORMAT_XRGB2101010
:
3220 case DRM_FORMAT_XBGR2101010
:
3221 case DRM_FORMAT_RGBX1010102
:
3222 case DRM_FORMAT_BGRX1010102
:
3223 case DRM_FORMAT_ARGB2101010
:
3224 case DRM_FORMAT_ABGR2101010
:
3225 case DRM_FORMAT_RGBA1010102
:
3226 case DRM_FORMAT_BGRA1010102
:
3227 case DRM_FORMAT_YUYV
:
3228 case DRM_FORMAT_YVYU
:
3229 case DRM_FORMAT_UYVY
:
3230 case DRM_FORMAT_VYUY
:
3231 case DRM_FORMAT_AYUV
:
3232 case DRM_FORMAT_NV12
:
3233 case DRM_FORMAT_NV21
:
3234 case DRM_FORMAT_NV16
:
3235 case DRM_FORMAT_NV61
:
3236 case DRM_FORMAT_NV24
:
3237 case DRM_FORMAT_NV42
:
3238 case DRM_FORMAT_YUV410
:
3239 case DRM_FORMAT_YVU410
:
3240 case DRM_FORMAT_YUV411
:
3241 case DRM_FORMAT_YVU411
:
3242 case DRM_FORMAT_YUV420
:
3243 case DRM_FORMAT_YVU420
:
3244 case DRM_FORMAT_YUV422
:
3245 case DRM_FORMAT_YVU422
:
3246 case DRM_FORMAT_YUV444
:
3247 case DRM_FORMAT_YVU444
:
3250 DRM_DEBUG_KMS("invalid pixel format %s\n",
3251 drm_get_format_name(r
->pixel_format
));
3256 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3258 int ret
, hsub
, vsub
, num_planes
, i
;
3260 ret
= format_check(r
);
3262 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3263 drm_get_format_name(r
->pixel_format
));
3267 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3268 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3269 num_planes
= drm_format_num_planes(r
->pixel_format
);
3271 if (r
->width
== 0 || r
->width
% hsub
) {
3272 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3276 if (r
->height
== 0 || r
->height
% vsub
) {
3277 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3281 for (i
= 0; i
< num_planes
; i
++) {
3282 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3283 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3284 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3286 if (!r
->handles
[i
]) {
3287 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3291 if ((uint64_t) width
* cpp
> UINT_MAX
)
3294 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3297 if (r
->pitches
[i
] < width
* cpp
) {
3298 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3302 if (r
->modifier
[i
] && !(r
->flags
& DRM_MODE_FB_MODIFIERS
)) {
3303 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3312 static struct drm_framebuffer
*
3313 internal_framebuffer_create(struct drm_device
*dev
,
3314 struct drm_mode_fb_cmd2
*r
,
3315 struct drm_file
*file_priv
)
3317 struct drm_mode_config
*config
= &dev
->mode_config
;
3318 struct drm_framebuffer
*fb
;
3321 if (r
->flags
& ~(DRM_MODE_FB_INTERLACED
| DRM_MODE_FB_MODIFIERS
)) {
3322 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3323 return ERR_PTR(-EINVAL
);
3326 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3327 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3328 r
->width
, config
->min_width
, config
->max_width
);
3329 return ERR_PTR(-EINVAL
);
3331 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3332 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3333 r
->height
, config
->min_height
, config
->max_height
);
3334 return ERR_PTR(-EINVAL
);
3337 if (r
->flags
& DRM_MODE_FB_MODIFIERS
&&
3338 !dev
->mode_config
.allow_fb_modifiers
) {
3339 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3340 return ERR_PTR(-EINVAL
);
3343 ret
= framebuffer_check(r
);
3345 return ERR_PTR(ret
);
3347 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3349 DRM_DEBUG_KMS("could not create framebuffer\n");
3357 * drm_mode_addfb2 - add an FB to the graphics configuration
3358 * @dev: drm device for the ioctl
3359 * @data: data pointer for the ioctl
3360 * @file_priv: drm file for the ioctl call
3362 * Add a new FB to the specified CRTC, given a user request with format. This is
3363 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3364 * and uses fourcc codes as pixel format specifiers.
3366 * Called by the user via ioctl.
3369 * Zero on success, negative errno on failure.
3371 int drm_mode_addfb2(struct drm_device
*dev
,
3372 void *data
, struct drm_file
*file_priv
)
3374 struct drm_mode_fb_cmd2
*r
= data
;
3375 struct drm_framebuffer
*fb
;
3377 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3380 fb
= internal_framebuffer_create(dev
, r
, file_priv
);
3384 /* Transfer ownership to the filp for reaping on close */
3386 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3387 mutex_lock(&file_priv
->fbs_lock
);
3388 r
->fb_id
= fb
->base
.id
;
3389 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3390 mutex_unlock(&file_priv
->fbs_lock
);
3396 * drm_mode_rmfb - remove an FB from the configuration
3397 * @dev: drm device for the ioctl
3398 * @data: data pointer for the ioctl
3399 * @file_priv: drm file for the ioctl call
3401 * Remove the FB specified by the user.
3403 * Called by the user via ioctl.
3406 * Zero on success, negative errno on failure.
3408 int drm_mode_rmfb(struct drm_device
*dev
,
3409 void *data
, struct drm_file
*file_priv
)
3411 struct drm_framebuffer
*fb
= NULL
;
3412 struct drm_framebuffer
*fbl
= NULL
;
3413 uint32_t *id
= data
;
3416 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3419 mutex_lock(&file_priv
->fbs_lock
);
3420 mutex_lock(&dev
->mode_config
.fb_lock
);
3421 fb
= __drm_framebuffer_lookup(dev
, *id
);
3425 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3431 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3432 __drm_framebuffer_unregister(dev
, fb
);
3434 list_del_init(&fb
->filp_head
);
3435 mutex_unlock(&dev
->mode_config
.fb_lock
);
3436 mutex_unlock(&file_priv
->fbs_lock
);
3438 drm_framebuffer_remove(fb
);
3443 mutex_unlock(&dev
->mode_config
.fb_lock
);
3444 mutex_unlock(&file_priv
->fbs_lock
);
3450 * drm_mode_getfb - get FB info
3451 * @dev: drm device for the ioctl
3452 * @data: data pointer for the ioctl
3453 * @file_priv: drm file for the ioctl call
3455 * Lookup the FB given its ID and return info about it.
3457 * Called by the user via ioctl.
3460 * Zero on success, negative errno on failure.
3462 int drm_mode_getfb(struct drm_device
*dev
,
3463 void *data
, struct drm_file
*file_priv
)
3465 struct drm_mode_fb_cmd
*r
= data
;
3466 struct drm_framebuffer
*fb
;
3469 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3472 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3476 r
->height
= fb
->height
;
3477 r
->width
= fb
->width
;
3478 r
->depth
= fb
->depth
;
3479 r
->bpp
= fb
->bits_per_pixel
;
3480 r
->pitch
= fb
->pitches
[0];
3481 if (fb
->funcs
->create_handle
) {
3482 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3483 drm_is_control_client(file_priv
)) {
3484 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3487 /* GET_FB() is an unprivileged ioctl so we must not
3488 * return a buffer-handle to non-master processes! For
3489 * backwards-compatibility reasons, we cannot make
3490 * GET_FB() privileged, so just return an invalid handle
3491 * for non-masters. */
3499 drm_framebuffer_unreference(fb
);
3505 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3506 * @dev: drm device for the ioctl
3507 * @data: data pointer for the ioctl
3508 * @file_priv: drm file for the ioctl call
3510 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3511 * rectangle list. Generic userspace which does frontbuffer rendering must call
3512 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3513 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3515 * Modesetting drivers which always update the frontbuffer do not need to
3516 * implement the corresponding ->dirty framebuffer callback.
3518 * Called by the user via ioctl.
3521 * Zero on success, negative errno on failure.
3523 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3524 void *data
, struct drm_file
*file_priv
)
3526 struct drm_clip_rect __user
*clips_ptr
;
3527 struct drm_clip_rect
*clips
= NULL
;
3528 struct drm_mode_fb_dirty_cmd
*r
= data
;
3529 struct drm_framebuffer
*fb
;
3534 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3537 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3541 num_clips
= r
->num_clips
;
3542 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3544 if (!num_clips
!= !clips_ptr
) {
3549 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3551 /* If userspace annotates copy, clips must come in pairs */
3552 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3557 if (num_clips
&& clips_ptr
) {
3558 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3562 clips
= kcalloc(num_clips
, sizeof(*clips
), GFP_KERNEL
);
3568 ret
= copy_from_user(clips
, clips_ptr
,
3569 num_clips
* sizeof(*clips
));
3576 if (fb
->funcs
->dirty
) {
3577 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3586 drm_framebuffer_unreference(fb
);
3593 * drm_fb_release - remove and free the FBs on this file
3594 * @priv: drm file for the ioctl
3596 * Destroy all the FBs associated with @filp.
3598 * Called by the user via ioctl.
3601 * Zero on success, negative errno on failure.
3603 void drm_fb_release(struct drm_file
*priv
)
3605 struct drm_device
*dev
= priv
->minor
->dev
;
3606 struct drm_framebuffer
*fb
, *tfb
;
3609 * When the file gets released that means no one else can access the fb
3610 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3611 * avoid upsetting lockdep since the universal cursor code adds a
3612 * framebuffer while holding mutex locks.
3614 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3615 * locks is impossible here since no one else but this function can get
3618 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3620 mutex_lock(&dev
->mode_config
.fb_lock
);
3621 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3622 __drm_framebuffer_unregister(dev
, fb
);
3623 mutex_unlock(&dev
->mode_config
.fb_lock
);
3625 list_del_init(&fb
->filp_head
);
3627 /* This will also drop the fpriv->fbs reference. */
3628 drm_framebuffer_remove(fb
);
3633 * drm_property_create - create a new property type
3635 * @flags: flags specifying the property type
3636 * @name: name of the property
3637 * @num_values: number of pre-defined values
3639 * This creates a new generic drm property which can then be attached to a drm
3640 * object with drm_object_attach_property. The returned property object must be
3641 * freed with drm_property_destroy.
3643 * Note that the DRM core keeps a per-device list of properties and that, if
3644 * drm_mode_config_cleanup() is called, it will destroy all properties created
3648 * A pointer to the newly created property on success, NULL on failure.
3650 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3651 const char *name
, int num_values
)
3653 struct drm_property
*property
= NULL
;
3656 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3660 property
->dev
= dev
;
3663 property
->values
= kcalloc(num_values
, sizeof(uint64_t),
3665 if (!property
->values
)
3669 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3673 property
->flags
= flags
;
3674 property
->num_values
= num_values
;
3675 INIT_LIST_HEAD(&property
->enum_list
);
3678 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3679 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3682 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3684 WARN_ON(!drm_property_type_valid(property
));
3688 kfree(property
->values
);
3692 EXPORT_SYMBOL(drm_property_create
);
3695 * drm_property_create_enum - create a new enumeration property type
3697 * @flags: flags specifying the property type
3698 * @name: name of the property
3699 * @props: enumeration lists with property values
3700 * @num_values: number of pre-defined values
3702 * This creates a new generic drm property which can then be attached to a drm
3703 * object with drm_object_attach_property. The returned property object must be
3704 * freed with drm_property_destroy.
3706 * Userspace is only allowed to set one of the predefined values for enumeration
3710 * A pointer to the newly created property on success, NULL on failure.
3712 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3714 const struct drm_prop_enum_list
*props
,
3717 struct drm_property
*property
;
3720 flags
|= DRM_MODE_PROP_ENUM
;
3722 property
= drm_property_create(dev
, flags
, name
, num_values
);
3726 for (i
= 0; i
< num_values
; i
++) {
3727 ret
= drm_property_add_enum(property
, i
,
3731 drm_property_destroy(dev
, property
);
3738 EXPORT_SYMBOL(drm_property_create_enum
);
3741 * drm_property_create_bitmask - create a new bitmask property type
3743 * @flags: flags specifying the property type
3744 * @name: name of the property
3745 * @props: enumeration lists with property bitflags
3746 * @num_props: size of the @props array
3747 * @supported_bits: bitmask of all supported enumeration values
3749 * This creates a new bitmask drm property which can then be attached to a drm
3750 * object with drm_object_attach_property. The returned property object must be
3751 * freed with drm_property_destroy.
3753 * Compared to plain enumeration properties userspace is allowed to set any
3754 * or'ed together combination of the predefined property bitflag values
3757 * A pointer to the newly created property on success, NULL on failure.
3759 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3760 int flags
, const char *name
,
3761 const struct drm_prop_enum_list
*props
,
3763 uint64_t supported_bits
)
3765 struct drm_property
*property
;
3766 int i
, ret
, index
= 0;
3767 int num_values
= hweight64(supported_bits
);
3769 flags
|= DRM_MODE_PROP_BITMASK
;
3771 property
= drm_property_create(dev
, flags
, name
, num_values
);
3774 for (i
= 0; i
< num_props
; i
++) {
3775 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3778 if (WARN_ON(index
>= num_values
)) {
3779 drm_property_destroy(dev
, property
);
3783 ret
= drm_property_add_enum(property
, index
++,
3787 drm_property_destroy(dev
, property
);
3794 EXPORT_SYMBOL(drm_property_create_bitmask
);
3796 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3797 int flags
, const char *name
,
3798 uint64_t min
, uint64_t max
)
3800 struct drm_property
*property
;
3802 property
= drm_property_create(dev
, flags
, name
, 2);
3806 property
->values
[0] = min
;
3807 property
->values
[1] = max
;
3813 * drm_property_create_range - create a new unsigned ranged property type
3815 * @flags: flags specifying the property type
3816 * @name: name of the property
3817 * @min: minimum value of the property
3818 * @max: maximum value of the property
3820 * This creates a new generic drm property which can then be attached to a drm
3821 * object with drm_object_attach_property. The returned property object must be
3822 * freed with drm_property_destroy.
3824 * Userspace is allowed to set any unsigned integer value in the (min, max)
3828 * A pointer to the newly created property on success, NULL on failure.
3830 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3832 uint64_t min
, uint64_t max
)
3834 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3837 EXPORT_SYMBOL(drm_property_create_range
);
3840 * drm_property_create_signed_range - create a new signed ranged property type
3842 * @flags: flags specifying the property type
3843 * @name: name of the property
3844 * @min: minimum value of the property
3845 * @max: maximum value of the property
3847 * This creates a new generic drm property which can then be attached to a drm
3848 * object with drm_object_attach_property. The returned property object must be
3849 * freed with drm_property_destroy.
3851 * Userspace is allowed to set any signed integer value in the (min, max)
3855 * A pointer to the newly created property on success, NULL on failure.
3857 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3858 int flags
, const char *name
,
3859 int64_t min
, int64_t max
)
3861 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3862 name
, I642U64(min
), I642U64(max
));
3864 EXPORT_SYMBOL(drm_property_create_signed_range
);
3867 * drm_property_create_object - create a new object property type
3869 * @flags: flags specifying the property type
3870 * @name: name of the property
3871 * @type: object type from DRM_MODE_OBJECT_* defines
3873 * This creates a new generic drm property which can then be attached to a drm
3874 * object with drm_object_attach_property. The returned property object must be
3875 * freed with drm_property_destroy.
3877 * Userspace is only allowed to set this to any property value of the given
3878 * @type. Only useful for atomic properties, which is enforced.
3881 * A pointer to the newly created property on success, NULL on failure.
3883 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3884 int flags
, const char *name
, uint32_t type
)
3886 struct drm_property
*property
;
3888 flags
|= DRM_MODE_PROP_OBJECT
;
3890 if (WARN_ON(!(flags
& DRM_MODE_PROP_ATOMIC
)))
3893 property
= drm_property_create(dev
, flags
, name
, 1);
3897 property
->values
[0] = type
;
3901 EXPORT_SYMBOL(drm_property_create_object
);
3904 * drm_property_create_bool - create a new boolean property type
3906 * @flags: flags specifying the property type
3907 * @name: name of the property
3909 * This creates a new generic drm property which can then be attached to a drm
3910 * object with drm_object_attach_property. The returned property object must be
3911 * freed with drm_property_destroy.
3913 * This is implemented as a ranged property with only {0, 1} as valid values.
3916 * A pointer to the newly created property on success, NULL on failure.
3918 struct drm_property
*drm_property_create_bool(struct drm_device
*dev
, int flags
,
3921 return drm_property_create_range(dev
, flags
, name
, 0, 1);
3923 EXPORT_SYMBOL(drm_property_create_bool
);
3926 * drm_property_add_enum - add a possible value to an enumeration property
3927 * @property: enumeration property to change
3928 * @index: index of the new enumeration
3929 * @value: value of the new enumeration
3930 * @name: symbolic name of the new enumeration
3932 * This functions adds enumerations to a property.
3934 * It's use is deprecated, drivers should use one of the more specific helpers
3935 * to directly create the property with all enumerations already attached.
3938 * Zero on success, error code on failure.
3940 int drm_property_add_enum(struct drm_property
*property
, int index
,
3941 uint64_t value
, const char *name
)
3943 struct drm_property_enum
*prop_enum
;
3945 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3946 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3950 * Bitmask enum properties have the additional constraint of values
3953 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3957 if (!list_empty(&property
->enum_list
)) {
3958 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3959 if (prop_enum
->value
== value
) {
3960 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3961 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3967 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3971 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3972 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3973 prop_enum
->value
= value
;
3975 property
->values
[index
] = value
;
3976 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
3979 EXPORT_SYMBOL(drm_property_add_enum
);
3982 * drm_property_destroy - destroy a drm property
3984 * @property: property to destry
3986 * This function frees a property including any attached resources like
3987 * enumeration values.
3989 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3991 struct drm_property_enum
*prop_enum
, *pt
;
3993 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
3994 list_del(&prop_enum
->head
);
3998 if (property
->num_values
)
3999 kfree(property
->values
);
4000 drm_mode_object_put(dev
, &property
->base
);
4001 list_del(&property
->head
);
4004 EXPORT_SYMBOL(drm_property_destroy
);
4007 * drm_object_attach_property - attach a property to a modeset object
4008 * @obj: drm modeset object
4009 * @property: property to attach
4010 * @init_val: initial value of the property
4012 * This attaches the given property to the modeset object with the given initial
4013 * value. Currently this function cannot fail since the properties are stored in
4014 * a statically sized array.
4016 void drm_object_attach_property(struct drm_mode_object
*obj
,
4017 struct drm_property
*property
,
4020 int count
= obj
->properties
->count
;
4022 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
4023 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4024 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4025 "you see this message on the same object type.\n",
4030 obj
->properties
->properties
[count
] = property
;
4031 obj
->properties
->values
[count
] = init_val
;
4032 obj
->properties
->count
++;
4033 if (property
->flags
& DRM_MODE_PROP_ATOMIC
)
4034 obj
->properties
->atomic_count
++;
4036 EXPORT_SYMBOL(drm_object_attach_property
);
4039 * drm_object_property_set_value - set the value of a property
4040 * @obj: drm mode object to set property value for
4041 * @property: property to set
4042 * @val: value the property should be set to
4044 * This functions sets a given property on a given object. This function only
4045 * changes the software state of the property, it does not call into the
4046 * driver's ->set_property callback.
4049 * Zero on success, error code on failure.
4051 int drm_object_property_set_value(struct drm_mode_object
*obj
,
4052 struct drm_property
*property
, uint64_t val
)
4056 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4057 if (obj
->properties
->properties
[i
] == property
) {
4058 obj
->properties
->values
[i
] = val
;
4065 EXPORT_SYMBOL(drm_object_property_set_value
);
4068 * drm_object_property_get_value - retrieve the value of a property
4069 * @obj: drm mode object to get property value from
4070 * @property: property to retrieve
4071 * @val: storage for the property value
4073 * This function retrieves the softare state of the given property for the given
4074 * property. Since there is no driver callback to retrieve the current property
4075 * value this might be out of sync with the hardware, depending upon the driver
4079 * Zero on success, error code on failure.
4081 int drm_object_property_get_value(struct drm_mode_object
*obj
,
4082 struct drm_property
*property
, uint64_t *val
)
4086 /* read-only properties bypass atomic mechanism and still store
4087 * their value in obj->properties->values[].. mostly to avoid
4088 * having to deal w/ EDID and similar props in atomic paths:
4090 if (drm_core_check_feature(property
->dev
, DRIVER_ATOMIC
) &&
4091 !(property
->flags
& DRM_MODE_PROP_IMMUTABLE
))
4092 return drm_atomic_get_property(obj
, property
, val
);
4094 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4095 if (obj
->properties
->properties
[i
] == property
) {
4096 *val
= obj
->properties
->values
[i
];
4103 EXPORT_SYMBOL(drm_object_property_get_value
);
4106 * drm_mode_getproperty_ioctl - get the property metadata
4109 * @file_priv: DRM file info
4111 * This function retrieves the metadata for a given property, like the different
4112 * possible values for an enum property or the limits for a range property.
4114 * Blob properties are special
4116 * Called by the user via ioctl.
4119 * Zero on success, negative errno on failure.
4121 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
4122 void *data
, struct drm_file
*file_priv
)
4124 struct drm_mode_get_property
*out_resp
= data
;
4125 struct drm_property
*property
;
4127 int value_count
= 0;
4130 struct drm_property_enum
*prop_enum
;
4131 struct drm_mode_property_enum __user
*enum_ptr
;
4132 uint64_t __user
*values_ptr
;
4134 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4137 drm_modeset_lock_all(dev
);
4138 property
= drm_property_find(dev
, out_resp
->prop_id
);
4144 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4145 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4146 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
4150 value_count
= property
->num_values
;
4152 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
4153 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
4154 out_resp
->flags
= property
->flags
;
4156 if ((out_resp
->count_values
>= value_count
) && value_count
) {
4157 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
4158 for (i
= 0; i
< value_count
; i
++) {
4159 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
4165 out_resp
->count_values
= value_count
;
4167 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4168 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4169 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
4171 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
4172 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
4174 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
4179 if (copy_to_user(&enum_ptr
[copied
].name
,
4180 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
4187 out_resp
->count_enum_blobs
= enum_count
;
4191 * NOTE: The idea seems to have been to use this to read all the blob
4192 * property values. But nothing ever added them to the corresponding
4193 * list, userspace always used the special-purpose get_blob ioctl to
4194 * read the value for a blob property. It also doesn't make a lot of
4195 * sense to return values here when everything else is just metadata for
4196 * the property itself.
4198 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4199 out_resp
->count_enum_blobs
= 0;
4201 drm_modeset_unlock_all(dev
);
4205 static struct drm_property_blob
*
4206 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
4209 struct drm_property_blob
*blob
;
4212 if (!length
|| !data
)
4215 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
4219 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
4225 blob
->length
= length
;
4227 memcpy(blob
->data
, data
, length
);
4229 list_add_tail(&blob
->head
, &dev
->mode_config
.property_blob_list
);
4233 static void drm_property_destroy_blob(struct drm_device
*dev
,
4234 struct drm_property_blob
*blob
)
4236 drm_mode_object_put(dev
, &blob
->base
);
4237 list_del(&blob
->head
);
4242 * drm_mode_getblob_ioctl - get the contents of a blob property value
4245 * @file_priv: DRM file info
4247 * This function retrieves the contents of a blob property. The value stored in
4248 * an object's blob property is just a normal modeset object id.
4250 * Called by the user via ioctl.
4253 * Zero on success, negative errno on failure.
4255 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
4256 void *data
, struct drm_file
*file_priv
)
4258 struct drm_mode_get_blob
*out_resp
= data
;
4259 struct drm_property_blob
*blob
;
4261 void __user
*blob_ptr
;
4263 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4266 drm_modeset_lock_all(dev
);
4267 blob
= drm_property_blob_find(dev
, out_resp
->blob_id
);
4273 if (out_resp
->length
== blob
->length
) {
4274 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4275 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)) {
4280 out_resp
->length
= blob
->length
;
4283 drm_modeset_unlock_all(dev
);
4288 * drm_mode_connector_set_path_property - set tile property on connector
4289 * @connector: connector to set property on.
4290 * @path: path to use for property.
4292 * This creates a property to expose to userspace to specify a
4293 * connector path. This is mainly used for DisplayPort MST where
4294 * connectors have a topology and we want to allow userspace to give
4295 * them more meaningful names.
4298 * Zero on success, negative errno on failure.
4300 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4303 struct drm_device
*dev
= connector
->dev
;
4304 size_t size
= strlen(path
) + 1;
4307 connector
->path_blob_ptr
= drm_property_create_blob(connector
->dev
,
4309 if (!connector
->path_blob_ptr
)
4312 ret
= drm_object_property_set_value(&connector
->base
,
4313 dev
->mode_config
.path_property
,
4314 connector
->path_blob_ptr
->base
.id
);
4317 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4320 * drm_mode_connector_set_tile_property - set tile property on connector
4321 * @connector: connector to set property on.
4323 * This looks up the tile information for a connector, and creates a
4324 * property for userspace to parse if it exists. The property is of
4325 * the form of 8 integers using ':' as a separator.
4328 * Zero on success, errno on failure.
4330 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
)
4332 struct drm_device
*dev
= connector
->dev
;
4336 if (connector
->tile_blob_ptr
)
4337 drm_property_destroy_blob(dev
, connector
->tile_blob_ptr
);
4339 if (!connector
->has_tile
) {
4340 connector
->tile_blob_ptr
= NULL
;
4341 ret
= drm_object_property_set_value(&connector
->base
,
4342 dev
->mode_config
.tile_property
, 0);
4346 snprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4347 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
4348 connector
->num_h_tile
, connector
->num_v_tile
,
4349 connector
->tile_h_loc
, connector
->tile_v_loc
,
4350 connector
->tile_h_size
, connector
->tile_v_size
);
4351 size
= strlen(tile
) + 1;
4353 connector
->tile_blob_ptr
= drm_property_create_blob(connector
->dev
,
4355 if (!connector
->tile_blob_ptr
)
4358 ret
= drm_object_property_set_value(&connector
->base
,
4359 dev
->mode_config
.tile_property
,
4360 connector
->tile_blob_ptr
->base
.id
);
4363 EXPORT_SYMBOL(drm_mode_connector_set_tile_property
);
4366 * drm_mode_connector_update_edid_property - update the edid property of a connector
4367 * @connector: drm connector
4368 * @edid: new value of the edid property
4370 * This function creates a new blob modeset object and assigns its id to the
4371 * connector's edid property.
4374 * Zero on success, negative errno on failure.
4376 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4377 const struct edid
*edid
)
4379 struct drm_device
*dev
= connector
->dev
;
4383 /* ignore requests to set edid when overridden */
4384 if (connector
->override_edid
)
4387 if (connector
->edid_blob_ptr
)
4388 drm_property_destroy_blob(dev
, connector
->edid_blob_ptr
);
4390 /* Delete edid, when there is none. */
4392 connector
->edid_blob_ptr
= NULL
;
4393 ret
= drm_object_property_set_value(&connector
->base
, dev
->mode_config
.edid_property
, 0);
4397 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4398 connector
->edid_blob_ptr
= drm_property_create_blob(connector
->dev
,
4400 if (!connector
->edid_blob_ptr
)
4403 ret
= drm_object_property_set_value(&connector
->base
,
4404 dev
->mode_config
.edid_property
,
4405 connector
->edid_blob_ptr
->base
.id
);
4409 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4411 /* Some properties could refer to dynamic refcnt'd objects, or things that
4412 * need special locking to handle lifetime issues (ie. to ensure the prop
4413 * value doesn't become invalid part way through the property update due to
4414 * race). The value returned by reference via 'obj' should be passed back
4415 * to drm_property_change_valid_put() after the property is set (and the
4416 * object to which the property is attached has a chance to take it's own
4419 bool drm_property_change_valid_get(struct drm_property
*property
,
4420 uint64_t value
, struct drm_mode_object
**ref
)
4424 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4429 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4430 if (value
< property
->values
[0] || value
> property
->values
[1])
4433 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4434 int64_t svalue
= U642I64(value
);
4436 if (svalue
< U642I64(property
->values
[0]) ||
4437 svalue
> U642I64(property
->values
[1]))
4440 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4441 uint64_t valid_mask
= 0;
4443 for (i
= 0; i
< property
->num_values
; i
++)
4444 valid_mask
|= (1ULL << property
->values
[i
]);
4445 return !(value
& ~valid_mask
);
4446 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4447 /* Only the driver knows */
4449 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4450 /* a zero value for an object property translates to null: */
4454 /* handle refcnt'd objects specially: */
4455 if (property
->values
[0] == DRM_MODE_OBJECT_FB
) {
4456 struct drm_framebuffer
*fb
;
4457 fb
= drm_framebuffer_lookup(property
->dev
, value
);
4465 return _object_find(property
->dev
, value
, property
->values
[0]) != NULL
;
4469 for (i
= 0; i
< property
->num_values
; i
++)
4470 if (property
->values
[i
] == value
)
4475 void drm_property_change_valid_put(struct drm_property
*property
,
4476 struct drm_mode_object
*ref
)
4481 if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4482 if (property
->values
[0] == DRM_MODE_OBJECT_FB
)
4483 drm_framebuffer_unreference(obj_to_fb(ref
));
4488 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4491 * @file_priv: DRM file info
4493 * This function sets the current value for a connectors's property. It also
4494 * calls into a driver's ->set_property callback to update the hardware state
4496 * Called by the user via ioctl.
4499 * Zero on success, negative errno on failure.
4501 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4502 void *data
, struct drm_file
*file_priv
)
4504 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4505 struct drm_mode_obj_set_property obj_set_prop
= {
4506 .value
= conn_set_prop
->value
,
4507 .prop_id
= conn_set_prop
->prop_id
,
4508 .obj_id
= conn_set_prop
->connector_id
,
4509 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4512 /* It does all the locking and checking we need */
4513 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4516 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4517 struct drm_property
*property
,
4521 struct drm_connector
*connector
= obj_to_connector(obj
);
4523 /* Do DPMS ourselves */
4524 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4525 if (connector
->funcs
->dpms
)
4526 (*connector
->funcs
->dpms
)(connector
, (int)value
);
4528 } else if (connector
->funcs
->set_property
)
4529 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4531 /* store the property value if successful */
4533 drm_object_property_set_value(&connector
->base
, property
, value
);
4537 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4538 struct drm_property
*property
,
4542 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4544 if (crtc
->funcs
->set_property
)
4545 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4547 drm_object_property_set_value(obj
, property
, value
);
4553 * drm_mode_plane_set_obj_prop - set the value of a property
4554 * @plane: drm plane object to set property value for
4555 * @property: property to set
4556 * @value: value the property should be set to
4558 * This functions sets a given property on a given plane object. This function
4559 * calls the driver's ->set_property callback and changes the software state of
4560 * the property if the callback succeeds.
4563 * Zero on success, error code on failure.
4565 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4566 struct drm_property
*property
,
4570 struct drm_mode_object
*obj
= &plane
->base
;
4572 if (plane
->funcs
->set_property
)
4573 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4575 drm_object_property_set_value(obj
, property
, value
);
4579 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4582 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4585 * @file_priv: DRM file info
4587 * This function retrieves the current value for an object's property. Compared
4588 * to the connector specific ioctl this one is extended to also work on crtc and
4591 * Called by the user via ioctl.
4594 * Zero on success, negative errno on failure.
4596 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4597 struct drm_file
*file_priv
)
4599 struct drm_mode_obj_get_properties
*arg
= data
;
4600 struct drm_mode_object
*obj
;
4603 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4606 drm_modeset_lock_all(dev
);
4608 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4613 if (!obj
->properties
) {
4618 ret
= get_properties(obj
, file_priv
->atomic
,
4619 (uint32_t __user
*)(unsigned long)(arg
->props_ptr
),
4620 (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
),
4624 drm_modeset_unlock_all(dev
);
4629 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4632 * @file_priv: DRM file info
4634 * This function sets the current value for an object's property. It also calls
4635 * into a driver's ->set_property callback to update the hardware state.
4636 * Compared to the connector specific ioctl this one is extended to also work on
4637 * crtc and plane objects.
4639 * Called by the user via ioctl.
4642 * Zero on success, negative errno on failure.
4644 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4645 struct drm_file
*file_priv
)
4647 struct drm_mode_obj_set_property
*arg
= data
;
4648 struct drm_mode_object
*arg_obj
;
4649 struct drm_mode_object
*prop_obj
;
4650 struct drm_property
*property
;
4651 int i
, ret
= -EINVAL
;
4652 struct drm_mode_object
*ref
;
4654 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4657 drm_modeset_lock_all(dev
);
4659 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4664 if (!arg_obj
->properties
)
4667 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4668 if (arg_obj
->properties
->properties
[i
]->base
.id
== arg
->prop_id
)
4671 if (i
== arg_obj
->properties
->count
)
4674 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
4675 DRM_MODE_OBJECT_PROPERTY
);
4680 property
= obj_to_property(prop_obj
);
4682 if (!drm_property_change_valid_get(property
, arg
->value
, &ref
))
4685 switch (arg_obj
->type
) {
4686 case DRM_MODE_OBJECT_CONNECTOR
:
4687 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
4690 case DRM_MODE_OBJECT_CRTC
:
4691 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
4693 case DRM_MODE_OBJECT_PLANE
:
4694 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
4695 property
, arg
->value
);
4699 drm_property_change_valid_put(property
, ref
);
4702 drm_modeset_unlock_all(dev
);
4707 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4708 * @connector: connector to attach
4709 * @encoder: encoder to attach @connector to
4711 * This function links up a connector to an encoder. Note that the routing
4712 * restrictions between encoders and crtcs are exposed to userspace through the
4713 * possible_clones and possible_crtcs bitmasks.
4716 * Zero on success, negative errno on failure.
4718 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
4719 struct drm_encoder
*encoder
)
4723 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
4724 if (connector
->encoder_ids
[i
] == 0) {
4725 connector
->encoder_ids
[i
] = encoder
->base
.id
;
4731 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
4734 * drm_mode_crtc_set_gamma_size - set the gamma table size
4735 * @crtc: CRTC to set the gamma table size for
4736 * @gamma_size: size of the gamma table
4738 * Drivers which support gamma tables should set this to the supported gamma
4739 * table size when initializing the CRTC. Currently the drm core only supports a
4740 * fixed gamma table size.
4743 * Zero on success, negative errno on failure.
4745 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
4748 crtc
->gamma_size
= gamma_size
;
4750 crtc
->gamma_store
= kcalloc(gamma_size
, sizeof(uint16_t) * 3,
4752 if (!crtc
->gamma_store
) {
4753 crtc
->gamma_size
= 0;
4759 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
4762 * drm_mode_gamma_set_ioctl - set the gamma table
4765 * @file_priv: DRM file info
4767 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4768 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4770 * Called by the user via ioctl.
4773 * Zero on success, negative errno on failure.
4775 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
4776 void *data
, struct drm_file
*file_priv
)
4778 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4779 struct drm_crtc
*crtc
;
4780 void *r_base
, *g_base
, *b_base
;
4784 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4787 drm_modeset_lock_all(dev
);
4788 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4794 if (crtc
->funcs
->gamma_set
== NULL
) {
4799 /* memcpy into gamma store */
4800 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4805 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4806 r_base
= crtc
->gamma_store
;
4807 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
4812 g_base
= r_base
+ size
;
4813 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
4818 b_base
= g_base
+ size
;
4819 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
4824 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
4827 drm_modeset_unlock_all(dev
);
4833 * drm_mode_gamma_get_ioctl - get the gamma table
4836 * @file_priv: DRM file info
4838 * Copy the current gamma table into the storage provided. This also provides
4839 * the gamma table size the driver expects, which can be used to size the
4840 * allocated storage.
4842 * Called by the user via ioctl.
4845 * Zero on success, negative errno on failure.
4847 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
4848 void *data
, struct drm_file
*file_priv
)
4850 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4851 struct drm_crtc
*crtc
;
4852 void *r_base
, *g_base
, *b_base
;
4856 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4859 drm_modeset_lock_all(dev
);
4860 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4866 /* memcpy into gamma store */
4867 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4872 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4873 r_base
= crtc
->gamma_store
;
4874 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
4879 g_base
= r_base
+ size
;
4880 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
4885 b_base
= g_base
+ size
;
4886 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
4891 drm_modeset_unlock_all(dev
);
4896 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4899 * @file_priv: DRM file info
4901 * This schedules an asynchronous update on a given CRTC, called page flip.
4902 * Optionally a drm event is generated to signal the completion of the event.
4903 * Generic drivers cannot assume that a pageflip with changed framebuffer
4904 * properties (including driver specific metadata like tiling layout) will work,
4905 * but some drivers support e.g. pixel format changes through the pageflip
4908 * Called by the user via ioctl.
4911 * Zero on success, negative errno on failure.
4913 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
4914 void *data
, struct drm_file
*file_priv
)
4916 struct drm_mode_crtc_page_flip
*page_flip
= data
;
4917 struct drm_crtc
*crtc
;
4918 struct drm_framebuffer
*fb
= NULL
;
4919 struct drm_pending_vblank_event
*e
= NULL
;
4920 unsigned long flags
;
4923 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
4924 page_flip
->reserved
!= 0)
4927 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
4930 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
4934 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
4935 if (crtc
->primary
->fb
== NULL
) {
4936 /* The framebuffer is currently unbound, presumably
4937 * due to a hotplug event, that userspace has not
4944 if (crtc
->funcs
->page_flip
== NULL
)
4947 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
4953 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
4957 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
4958 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4963 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4965 spin_lock_irqsave(&dev
->event_lock
, flags
);
4966 if (file_priv
->event_space
< sizeof(e
->event
)) {
4967 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4970 file_priv
->event_space
-= sizeof(e
->event
);
4971 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4973 e
= kzalloc(sizeof(*e
), GFP_KERNEL
);
4975 spin_lock_irqsave(&dev
->event_lock
, flags
);
4976 file_priv
->event_space
+= sizeof(e
->event
);
4977 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4981 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
4982 e
->event
.base
.length
= sizeof(e
->event
);
4983 e
->event
.user_data
= page_flip
->user_data
;
4984 e
->base
.event
= &e
->event
.base
;
4985 e
->base
.file_priv
= file_priv
;
4987 (void (*) (struct drm_pending_event
*)) kfree
;
4990 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
4991 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
4993 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4994 spin_lock_irqsave(&dev
->event_lock
, flags
);
4995 file_priv
->event_space
+= sizeof(e
->event
);
4996 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4999 /* Keep the old fb, don't unref it. */
5000 crtc
->primary
->old_fb
= NULL
;
5003 * Warn if the driver hasn't properly updated the crtc->fb
5004 * field to reflect that the new framebuffer is now used.
5005 * Failing to do so will screw with the reference counting
5008 WARN_ON(crtc
->primary
->fb
!= fb
);
5009 /* Unref only the old framebuffer. */
5015 drm_framebuffer_unreference(fb
);
5016 if (crtc
->primary
->old_fb
)
5017 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
5018 crtc
->primary
->old_fb
= NULL
;
5019 drm_modeset_unlock_crtc(crtc
);
5025 * drm_mode_config_reset - call ->reset callbacks
5028 * This functions calls all the crtc's, encoder's and connector's ->reset
5029 * callback. Drivers can use this in e.g. their driver load or resume code to
5030 * reset hardware and software state.
5032 void drm_mode_config_reset(struct drm_device
*dev
)
5034 struct drm_crtc
*crtc
;
5035 struct drm_plane
*plane
;
5036 struct drm_encoder
*encoder
;
5037 struct drm_connector
*connector
;
5039 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
)
5040 if (plane
->funcs
->reset
)
5041 plane
->funcs
->reset(plane
);
5043 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
5044 if (crtc
->funcs
->reset
)
5045 crtc
->funcs
->reset(crtc
);
5047 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
5048 if (encoder
->funcs
->reset
)
5049 encoder
->funcs
->reset(encoder
);
5051 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
5052 connector
->status
= connector_status_unknown
;
5054 if (connector
->funcs
->reset
)
5055 connector
->funcs
->reset(connector
);
5058 EXPORT_SYMBOL(drm_mode_config_reset
);
5061 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5064 * @file_priv: DRM file info
5066 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5067 * TTM or something else entirely) and returns the resulting buffer handle. This
5068 * handle can then be wrapped up into a framebuffer modeset object.
5070 * Note that userspace is not allowed to use such objects for render
5071 * acceleration - drivers must create their own private ioctls for such a use
5074 * Called by the user via ioctl.
5077 * Zero on success, negative errno on failure.
5079 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
5080 void *data
, struct drm_file
*file_priv
)
5082 struct drm_mode_create_dumb
*args
= data
;
5083 u32 cpp
, stride
, size
;
5085 if (!dev
->driver
->dumb_create
)
5087 if (!args
->width
|| !args
->height
|| !args
->bpp
)
5090 /* overflow checks for 32bit size calculations */
5091 /* NOTE: DIV_ROUND_UP() can overflow */
5092 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
5093 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
5095 stride
= cpp
* args
->width
;
5096 if (args
->height
> 0xffffffffU
/ stride
)
5099 /* test for wrap-around */
5100 size
= args
->height
* stride
;
5101 if (PAGE_ALIGN(size
) == 0)
5105 * handle, pitch and size are output parameters. Zero them out to
5106 * prevent drivers from accidentally using uninitialized data. Since
5107 * not all existing userspace is clearing these fields properly we
5108 * cannot reject IOCTL with garbage in them.
5114 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
5118 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5121 * @file_priv: DRM file info
5123 * Allocate an offset in the drm device node's address space to be able to
5124 * memory map a dumb buffer.
5126 * Called by the user via ioctl.
5129 * Zero on success, negative errno on failure.
5131 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
5132 void *data
, struct drm_file
*file_priv
)
5134 struct drm_mode_map_dumb
*args
= data
;
5136 /* call driver ioctl to get mmap offset */
5137 if (!dev
->driver
->dumb_map_offset
)
5140 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
5144 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5147 * @file_priv: DRM file info
5149 * This destroys the userspace handle for the given dumb backing storage buffer.
5150 * Since buffer objects must be reference counted in the kernel a buffer object
5151 * won't be immediately freed if a framebuffer modeset object still uses it.
5153 * Called by the user via ioctl.
5156 * Zero on success, negative errno on failure.
5158 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
5159 void *data
, struct drm_file
*file_priv
)
5161 struct drm_mode_destroy_dumb
*args
= data
;
5163 if (!dev
->driver
->dumb_destroy
)
5166 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
5170 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5171 * @format: pixel format (DRM_FORMAT_*)
5172 * @depth: storage for the depth value
5173 * @bpp: storage for the bpp value
5175 * This only supports RGB formats here for compat with code that doesn't use
5176 * pixel formats directly yet.
5178 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
5183 case DRM_FORMAT_RGB332
:
5184 case DRM_FORMAT_BGR233
:
5188 case DRM_FORMAT_XRGB1555
:
5189 case DRM_FORMAT_XBGR1555
:
5190 case DRM_FORMAT_RGBX5551
:
5191 case DRM_FORMAT_BGRX5551
:
5192 case DRM_FORMAT_ARGB1555
:
5193 case DRM_FORMAT_ABGR1555
:
5194 case DRM_FORMAT_RGBA5551
:
5195 case DRM_FORMAT_BGRA5551
:
5199 case DRM_FORMAT_RGB565
:
5200 case DRM_FORMAT_BGR565
:
5204 case DRM_FORMAT_RGB888
:
5205 case DRM_FORMAT_BGR888
:
5209 case DRM_FORMAT_XRGB8888
:
5210 case DRM_FORMAT_XBGR8888
:
5211 case DRM_FORMAT_RGBX8888
:
5212 case DRM_FORMAT_BGRX8888
:
5216 case DRM_FORMAT_XRGB2101010
:
5217 case DRM_FORMAT_XBGR2101010
:
5218 case DRM_FORMAT_RGBX1010102
:
5219 case DRM_FORMAT_BGRX1010102
:
5220 case DRM_FORMAT_ARGB2101010
:
5221 case DRM_FORMAT_ABGR2101010
:
5222 case DRM_FORMAT_RGBA1010102
:
5223 case DRM_FORMAT_BGRA1010102
:
5227 case DRM_FORMAT_ARGB8888
:
5228 case DRM_FORMAT_ABGR8888
:
5229 case DRM_FORMAT_RGBA8888
:
5230 case DRM_FORMAT_BGRA8888
:
5235 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5236 drm_get_format_name(format
));
5242 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
5245 * drm_format_num_planes - get the number of planes for format
5246 * @format: pixel format (DRM_FORMAT_*)
5249 * The number of planes used by the specified pixel format.
5251 int drm_format_num_planes(uint32_t format
)
5254 case DRM_FORMAT_YUV410
:
5255 case DRM_FORMAT_YVU410
:
5256 case DRM_FORMAT_YUV411
:
5257 case DRM_FORMAT_YVU411
:
5258 case DRM_FORMAT_YUV420
:
5259 case DRM_FORMAT_YVU420
:
5260 case DRM_FORMAT_YUV422
:
5261 case DRM_FORMAT_YVU422
:
5262 case DRM_FORMAT_YUV444
:
5263 case DRM_FORMAT_YVU444
:
5265 case DRM_FORMAT_NV12
:
5266 case DRM_FORMAT_NV21
:
5267 case DRM_FORMAT_NV16
:
5268 case DRM_FORMAT_NV61
:
5269 case DRM_FORMAT_NV24
:
5270 case DRM_FORMAT_NV42
:
5276 EXPORT_SYMBOL(drm_format_num_planes
);
5279 * drm_format_plane_cpp - determine the bytes per pixel value
5280 * @format: pixel format (DRM_FORMAT_*)
5281 * @plane: plane index
5284 * The bytes per pixel value for the specified plane.
5286 int drm_format_plane_cpp(uint32_t format
, int plane
)
5291 if (plane
>= drm_format_num_planes(format
))
5295 case DRM_FORMAT_YUYV
:
5296 case DRM_FORMAT_YVYU
:
5297 case DRM_FORMAT_UYVY
:
5298 case DRM_FORMAT_VYUY
:
5300 case DRM_FORMAT_NV12
:
5301 case DRM_FORMAT_NV21
:
5302 case DRM_FORMAT_NV16
:
5303 case DRM_FORMAT_NV61
:
5304 case DRM_FORMAT_NV24
:
5305 case DRM_FORMAT_NV42
:
5306 return plane
? 2 : 1;
5307 case DRM_FORMAT_YUV410
:
5308 case DRM_FORMAT_YVU410
:
5309 case DRM_FORMAT_YUV411
:
5310 case DRM_FORMAT_YVU411
:
5311 case DRM_FORMAT_YUV420
:
5312 case DRM_FORMAT_YVU420
:
5313 case DRM_FORMAT_YUV422
:
5314 case DRM_FORMAT_YVU422
:
5315 case DRM_FORMAT_YUV444
:
5316 case DRM_FORMAT_YVU444
:
5319 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
5323 EXPORT_SYMBOL(drm_format_plane_cpp
);
5326 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5327 * @format: pixel format (DRM_FORMAT_*)
5330 * The horizontal chroma subsampling factor for the
5331 * specified pixel format.
5333 int drm_format_horz_chroma_subsampling(uint32_t format
)
5336 case DRM_FORMAT_YUV411
:
5337 case DRM_FORMAT_YVU411
:
5338 case DRM_FORMAT_YUV410
:
5339 case DRM_FORMAT_YVU410
:
5341 case DRM_FORMAT_YUYV
:
5342 case DRM_FORMAT_YVYU
:
5343 case DRM_FORMAT_UYVY
:
5344 case DRM_FORMAT_VYUY
:
5345 case DRM_FORMAT_NV12
:
5346 case DRM_FORMAT_NV21
:
5347 case DRM_FORMAT_NV16
:
5348 case DRM_FORMAT_NV61
:
5349 case DRM_FORMAT_YUV422
:
5350 case DRM_FORMAT_YVU422
:
5351 case DRM_FORMAT_YUV420
:
5352 case DRM_FORMAT_YVU420
:
5358 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5361 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5362 * @format: pixel format (DRM_FORMAT_*)
5365 * The vertical chroma subsampling factor for the
5366 * specified pixel format.
5368 int drm_format_vert_chroma_subsampling(uint32_t format
)
5371 case DRM_FORMAT_YUV410
:
5372 case DRM_FORMAT_YVU410
:
5374 case DRM_FORMAT_YUV420
:
5375 case DRM_FORMAT_YVU420
:
5376 case DRM_FORMAT_NV12
:
5377 case DRM_FORMAT_NV21
:
5383 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5386 * drm_rotation_simplify() - Try to simplify the rotation
5387 * @rotation: Rotation to be simplified
5388 * @supported_rotations: Supported rotations
5390 * Attempt to simplify the rotation to a form that is supported.
5391 * Eg. if the hardware supports everything except DRM_REFLECT_X
5392 * one could call this function like this:
5394 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5395 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5396 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5398 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5399 * transforms the hardware supports, this function may not
5400 * be able to produce a supported transform, so the caller should
5401 * check the result afterwards.
5403 unsigned int drm_rotation_simplify(unsigned int rotation
,
5404 unsigned int supported_rotations
)
5406 if (rotation
& ~supported_rotations
) {
5407 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5408 rotation
= (rotation
& ~0xf) | BIT((ffs(rotation
& 0xf) + 1) % 4);
5413 EXPORT_SYMBOL(drm_rotation_simplify
);
5416 * drm_mode_config_init - initialize DRM mode_configuration structure
5419 * Initialize @dev's mode_config structure, used for tracking the graphics
5420 * configuration of @dev.
5422 * Since this initializes the modeset locks, no locking is possible. Which is no
5423 * problem, since this should happen single threaded at init time. It is the
5424 * driver's problem to ensure this guarantee.
5427 void drm_mode_config_init(struct drm_device
*dev
)
5429 mutex_init(&dev
->mode_config
.mutex
);
5430 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5431 mutex_init(&dev
->mode_config
.idr_mutex
);
5432 mutex_init(&dev
->mode_config
.fb_lock
);
5433 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5434 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5435 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5436 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5437 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5438 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5439 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5440 idr_init(&dev
->mode_config
.crtc_idr
);
5441 idr_init(&dev
->mode_config
.tile_idr
);
5443 drm_modeset_lock_all(dev
);
5444 drm_mode_create_standard_properties(dev
);
5445 drm_modeset_unlock_all(dev
);
5447 /* Just to be sure */
5448 dev
->mode_config
.num_fb
= 0;
5449 dev
->mode_config
.num_connector
= 0;
5450 dev
->mode_config
.num_crtc
= 0;
5451 dev
->mode_config
.num_encoder
= 0;
5452 dev
->mode_config
.num_overlay_plane
= 0;
5453 dev
->mode_config
.num_total_plane
= 0;
5455 EXPORT_SYMBOL(drm_mode_config_init
);
5458 * drm_mode_config_cleanup - free up DRM mode_config info
5461 * Free up all the connectors and CRTCs associated with this DRM device, then
5462 * free up the framebuffers and associated buffer objects.
5464 * Note that since this /should/ happen single-threaded at driver/device
5465 * teardown time, no locking is required. It's the driver's job to ensure that
5466 * this guarantee actually holds true.
5468 * FIXME: cleanup any dangling user buffer objects too
5470 void drm_mode_config_cleanup(struct drm_device
*dev
)
5472 struct drm_connector
*connector
, *ot
;
5473 struct drm_crtc
*crtc
, *ct
;
5474 struct drm_encoder
*encoder
, *enct
;
5475 struct drm_framebuffer
*fb
, *fbt
;
5476 struct drm_property
*property
, *pt
;
5477 struct drm_property_blob
*blob
, *bt
;
5478 struct drm_plane
*plane
, *plt
;
5480 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5482 encoder
->funcs
->destroy(encoder
);
5485 list_for_each_entry_safe(connector
, ot
,
5486 &dev
->mode_config
.connector_list
, head
) {
5487 connector
->funcs
->destroy(connector
);
5490 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5492 drm_property_destroy(dev
, property
);
5495 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5497 drm_property_destroy_blob(dev
, blob
);
5501 * Single-threaded teardown context, so it's not required to grab the
5502 * fb_lock to protect against concurrent fb_list access. Contrary, it
5503 * would actually deadlock with the drm_framebuffer_cleanup function.
5505 * Also, if there are any framebuffers left, that's a driver leak now,
5506 * so politely WARN about this.
5508 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5509 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5510 drm_framebuffer_remove(fb
);
5513 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5515 plane
->funcs
->destroy(plane
);
5518 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5519 crtc
->funcs
->destroy(crtc
);
5522 idr_destroy(&dev
->mode_config
.tile_idr
);
5523 idr_destroy(&dev
->mode_config
.crtc_idr
);
5524 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5526 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5528 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5529 unsigned int supported_rotations
)
5531 static const struct drm_prop_enum_list props
[] = {
5532 { DRM_ROTATE_0
, "rotate-0" },
5533 { DRM_ROTATE_90
, "rotate-90" },
5534 { DRM_ROTATE_180
, "rotate-180" },
5535 { DRM_ROTATE_270
, "rotate-270" },
5536 { DRM_REFLECT_X
, "reflect-x" },
5537 { DRM_REFLECT_Y
, "reflect-y" },
5540 return drm_property_create_bitmask(dev
, 0, "rotation",
5541 props
, ARRAY_SIZE(props
),
5542 supported_rotations
);
5544 EXPORT_SYMBOL(drm_mode_create_rotation_property
);
5549 * Tile groups are used to represent tiled monitors with a unique
5550 * integer identifier. Tiled monitors using DisplayID v1.3 have
5551 * a unique 8-byte handle, we store this in a tile group, so we
5552 * have a common identifier for all tiles in a monitor group.
5554 static void drm_tile_group_free(struct kref
*kref
)
5556 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
5557 struct drm_device
*dev
= tg
->dev
;
5558 mutex_lock(&dev
->mode_config
.idr_mutex
);
5559 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
5560 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5565 * drm_mode_put_tile_group - drop a reference to a tile group.
5567 * @tg: tile group to drop reference to.
5569 * drop reference to tile group and free if 0.
5571 void drm_mode_put_tile_group(struct drm_device
*dev
,
5572 struct drm_tile_group
*tg
)
5574 kref_put(&tg
->refcount
, drm_tile_group_free
);
5578 * drm_mode_get_tile_group - get a reference to an existing tile group
5580 * @topology: 8-bytes unique per monitor.
5582 * Use the unique bytes to get a reference to an existing tile group.
5585 * tile group or NULL if not found.
5587 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
5590 struct drm_tile_group
*tg
;
5592 mutex_lock(&dev
->mode_config
.idr_mutex
);
5593 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
5594 if (!memcmp(tg
->group_data
, topology
, 8)) {
5595 if (!kref_get_unless_zero(&tg
->refcount
))
5597 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5601 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5604 EXPORT_SYMBOL(drm_mode_get_tile_group
);
5607 * drm_mode_create_tile_group - create a tile group from a displayid description
5609 * @topology: 8-bytes unique per monitor.
5611 * Create a tile group for the unique monitor, and get a unique
5612 * identifier for the tile group.
5615 * new tile group or error.
5617 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
5620 struct drm_tile_group
*tg
;
5623 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
5625 return ERR_PTR(-ENOMEM
);
5627 kref_init(&tg
->refcount
);
5628 memcpy(tg
->group_data
, topology
, 8);
5631 mutex_lock(&dev
->mode_config
.idr_mutex
);
5632 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
5640 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5643 EXPORT_SYMBOL(drm_mode_create_tile_group
);