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
;
665 crtc
->invert_dimensions
= false;
667 drm_modeset_lock_init(&crtc
->mutex
);
668 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
672 crtc
->base
.properties
= &crtc
->properties
;
674 list_add_tail(&crtc
->head
, &config
->crtc_list
);
677 crtc
->primary
= primary
;
678 crtc
->cursor
= cursor
;
680 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
682 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
684 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
685 drm_object_attach_property(&crtc
->base
, config
->prop_active
, 0);
690 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
693 * drm_crtc_cleanup - Clean up the core crtc usage
694 * @crtc: CRTC to cleanup
696 * This function cleans up @crtc and removes it from the DRM mode setting
697 * core. Note that the function does *not* free the crtc structure itself,
698 * this is the responsibility of the caller.
700 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
702 struct drm_device
*dev
= crtc
->dev
;
704 kfree(crtc
->gamma_store
);
705 crtc
->gamma_store
= NULL
;
707 drm_modeset_lock_fini(&crtc
->mutex
);
709 drm_mode_object_put(dev
, &crtc
->base
);
710 list_del(&crtc
->head
);
711 dev
->mode_config
.num_crtc
--;
713 WARN_ON(crtc
->state
&& !crtc
->funcs
->atomic_destroy_state
);
714 if (crtc
->state
&& crtc
->funcs
->atomic_destroy_state
)
715 crtc
->funcs
->atomic_destroy_state(crtc
, crtc
->state
);
717 memset(crtc
, 0, sizeof(*crtc
));
719 EXPORT_SYMBOL(drm_crtc_cleanup
);
722 * drm_crtc_index - find the index of a registered CRTC
723 * @crtc: CRTC to find index for
725 * Given a registered CRTC, return the index of that CRTC within a DRM
726 * device's list of CRTCs.
728 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
730 unsigned int index
= 0;
731 struct drm_crtc
*tmp
;
733 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
742 EXPORT_SYMBOL(drm_crtc_index
);
745 * drm_mode_remove - remove and free a mode
746 * @connector: connector list to modify
747 * @mode: mode to remove
749 * Remove @mode from @connector's mode list, then free it.
751 static void drm_mode_remove(struct drm_connector
*connector
,
752 struct drm_display_mode
*mode
)
754 list_del(&mode
->head
);
755 drm_mode_destroy(connector
->dev
, mode
);
759 * drm_display_info_set_bus_formats - set the supported bus formats
760 * @info: display info to store bus formats in
761 * @formats: array containing the supported bus formats
762 * @num_formats: the number of entries in the fmts array
764 * Store the supported bus formats in display info structure.
765 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
766 * a full list of available formats.
768 int drm_display_info_set_bus_formats(struct drm_display_info
*info
,
770 unsigned int num_formats
)
774 if (!formats
&& num_formats
)
777 if (formats
&& num_formats
) {
778 fmts
= kmemdup(formats
, sizeof(*formats
) * num_formats
,
784 kfree(info
->bus_formats
);
785 info
->bus_formats
= fmts
;
786 info
->num_bus_formats
= num_formats
;
790 EXPORT_SYMBOL(drm_display_info_set_bus_formats
);
793 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
794 * @connector: connector to quwery
796 * The kernel supports per-connector configration of its consoles through
797 * use of the video= parameter. This function parses that option and
798 * extracts the user's specified mode (or enable/disable status) for a
799 * particular connector. This is typically only used during the early fbdev
802 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
804 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
807 if (fb_get_options(connector
->name
, &option
))
810 if (!drm_mode_parse_command_line_for_connector(option
,
818 switch (mode
->force
) {
822 case DRM_FORCE_ON_DIGITAL
:
831 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
832 connector
->force
= mode
->force
;
835 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
837 mode
->xres
, mode
->yres
,
838 mode
->refresh_specified
? mode
->refresh
: 60,
839 mode
->rb
? " reduced blanking" : "",
840 mode
->margins
? " with margins" : "",
841 mode
->interlace
? " interlaced" : "");
845 * drm_connector_init - Init a preallocated connector
847 * @connector: the connector to init
848 * @funcs: callbacks for this connector
849 * @connector_type: user visible type of the connector
851 * Initialises a preallocated connector. Connectors should be
852 * subclassed as part of driver connector objects.
855 * Zero on success, error code on failure.
857 int drm_connector_init(struct drm_device
*dev
,
858 struct drm_connector
*connector
,
859 const struct drm_connector_funcs
*funcs
,
862 struct drm_mode_config
*config
= &dev
->mode_config
;
864 struct ida
*connector_ida
=
865 &drm_connector_enum_list
[connector_type
].ida
;
867 drm_modeset_lock_all(dev
);
869 ret
= drm_mode_object_get_reg(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
, false);
873 connector
->base
.properties
= &connector
->properties
;
874 connector
->dev
= dev
;
875 connector
->funcs
= funcs
;
876 connector
->connector_type
= connector_type
;
877 connector
->connector_type_id
=
878 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
879 if (connector
->connector_type_id
< 0) {
880 ret
= connector
->connector_type_id
;
884 kasprintf(GFP_KERNEL
, "%s-%d",
885 drm_connector_enum_list
[connector_type
].name
,
886 connector
->connector_type_id
);
887 if (!connector
->name
) {
892 INIT_LIST_HEAD(&connector
->probed_modes
);
893 INIT_LIST_HEAD(&connector
->modes
);
894 connector
->edid_blob_ptr
= NULL
;
895 connector
->status
= connector_status_unknown
;
897 drm_connector_get_cmdline_mode(connector
);
899 /* We should add connectors at the end to avoid upsetting the connector
901 list_add_tail(&connector
->head
, &config
->connector_list
);
902 config
->num_connector
++;
904 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
905 drm_object_attach_property(&connector
->base
,
906 config
->edid_property
,
909 drm_object_attach_property(&connector
->base
,
910 config
->dpms_property
, 0);
912 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
913 drm_object_attach_property(&connector
->base
, config
->prop_crtc_id
, 0);
916 connector
->debugfs_entry
= NULL
;
920 drm_mode_object_put(dev
, &connector
->base
);
923 drm_modeset_unlock_all(dev
);
927 EXPORT_SYMBOL(drm_connector_init
);
930 * drm_connector_cleanup - cleans up an initialised connector
931 * @connector: connector to cleanup
933 * Cleans up the connector but doesn't free the object.
935 void drm_connector_cleanup(struct drm_connector
*connector
)
937 struct drm_device
*dev
= connector
->dev
;
938 struct drm_display_mode
*mode
, *t
;
940 if (connector
->tile_group
) {
941 drm_mode_put_tile_group(dev
, connector
->tile_group
);
942 connector
->tile_group
= NULL
;
945 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
946 drm_mode_remove(connector
, mode
);
948 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
949 drm_mode_remove(connector
, mode
);
951 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
952 connector
->connector_type_id
);
954 kfree(connector
->display_info
.bus_formats
);
955 drm_mode_object_put(dev
, &connector
->base
);
956 kfree(connector
->name
);
957 connector
->name
= NULL
;
958 list_del(&connector
->head
);
959 dev
->mode_config
.num_connector
--;
961 WARN_ON(connector
->state
&& !connector
->funcs
->atomic_destroy_state
);
962 if (connector
->state
&& connector
->funcs
->atomic_destroy_state
)
963 connector
->funcs
->atomic_destroy_state(connector
,
966 memset(connector
, 0, sizeof(*connector
));
968 EXPORT_SYMBOL(drm_connector_cleanup
);
971 * drm_connector_index - find the index of a registered connector
972 * @connector: connector to find index for
974 * Given a registered connector, return the index of that connector within a DRM
975 * device's list of connectors.
977 unsigned int drm_connector_index(struct drm_connector
*connector
)
979 unsigned int index
= 0;
980 struct drm_connector
*tmp
;
981 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
983 WARN_ON(!drm_modeset_is_locked(&config
->connection_mutex
));
985 list_for_each_entry(tmp
, &connector
->dev
->mode_config
.connector_list
, head
) {
986 if (tmp
== connector
)
994 EXPORT_SYMBOL(drm_connector_index
);
997 * drm_connector_register - register a connector
998 * @connector: the connector to register
1000 * Register userspace interfaces for a connector
1003 * Zero on success, error code on failure.
1005 int drm_connector_register(struct drm_connector
*connector
)
1009 drm_mode_object_register(connector
->dev
, &connector
->base
);
1011 ret
= drm_sysfs_connector_add(connector
);
1015 ret
= drm_debugfs_connector_add(connector
);
1017 drm_sysfs_connector_remove(connector
);
1023 EXPORT_SYMBOL(drm_connector_register
);
1026 * drm_connector_unregister - unregister a connector
1027 * @connector: the connector to unregister
1029 * Unregister userspace interfaces for a connector
1031 void drm_connector_unregister(struct drm_connector
*connector
)
1033 drm_sysfs_connector_remove(connector
);
1034 drm_debugfs_connector_remove(connector
);
1036 EXPORT_SYMBOL(drm_connector_unregister
);
1040 * drm_connector_unplug_all - unregister connector userspace interfaces
1043 * This function unregisters all connector userspace interfaces in sysfs. Should
1044 * be call when the device is disconnected, e.g. from an usb driver's
1045 * ->disconnect callback.
1047 void drm_connector_unplug_all(struct drm_device
*dev
)
1049 struct drm_connector
*connector
;
1051 /* taking the mode config mutex ends up in a clash with sysfs */
1052 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1053 drm_connector_unregister(connector
);
1056 EXPORT_SYMBOL(drm_connector_unplug_all
);
1059 * drm_encoder_init - Init a preallocated encoder
1061 * @encoder: the encoder to init
1062 * @funcs: callbacks for this encoder
1063 * @encoder_type: user visible type of the encoder
1065 * Initialises a preallocated encoder. Encoder should be
1066 * subclassed as part of driver encoder objects.
1069 * Zero on success, error code on failure.
1071 int drm_encoder_init(struct drm_device
*dev
,
1072 struct drm_encoder
*encoder
,
1073 const struct drm_encoder_funcs
*funcs
,
1078 drm_modeset_lock_all(dev
);
1080 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1085 encoder
->encoder_type
= encoder_type
;
1086 encoder
->funcs
= funcs
;
1087 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1088 drm_encoder_enum_list
[encoder_type
].name
,
1090 if (!encoder
->name
) {
1095 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1096 dev
->mode_config
.num_encoder
++;
1100 drm_mode_object_put(dev
, &encoder
->base
);
1103 drm_modeset_unlock_all(dev
);
1107 EXPORT_SYMBOL(drm_encoder_init
);
1110 * drm_encoder_cleanup - cleans up an initialised encoder
1111 * @encoder: encoder to cleanup
1113 * Cleans up the encoder but doesn't free the object.
1115 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1117 struct drm_device
*dev
= encoder
->dev
;
1119 drm_modeset_lock_all(dev
);
1120 drm_mode_object_put(dev
, &encoder
->base
);
1121 kfree(encoder
->name
);
1122 list_del(&encoder
->head
);
1123 dev
->mode_config
.num_encoder
--;
1124 drm_modeset_unlock_all(dev
);
1126 memset(encoder
, 0, sizeof(*encoder
));
1128 EXPORT_SYMBOL(drm_encoder_cleanup
);
1131 * drm_universal_plane_init - Initialize a new universal plane object
1133 * @plane: plane object to init
1134 * @possible_crtcs: bitmask of possible CRTCs
1135 * @funcs: callbacks for the new plane
1136 * @formats: array of supported formats (%DRM_FORMAT_*)
1137 * @format_count: number of elements in @formats
1138 * @type: type of plane (overlay, primary, cursor)
1140 * Initializes a plane object of type @type.
1143 * Zero on success, error code on failure.
1145 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1146 unsigned long possible_crtcs
,
1147 const struct drm_plane_funcs
*funcs
,
1148 const uint32_t *formats
, uint32_t format_count
,
1149 enum drm_plane_type type
)
1151 struct drm_mode_config
*config
= &dev
->mode_config
;
1154 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1158 drm_modeset_lock_init(&plane
->mutex
);
1160 plane
->base
.properties
= &plane
->properties
;
1162 plane
->funcs
= funcs
;
1163 plane
->format_types
= kmalloc_array(format_count
, sizeof(uint32_t),
1165 if (!plane
->format_types
) {
1166 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1167 drm_mode_object_put(dev
, &plane
->base
);
1171 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1172 plane
->format_count
= format_count
;
1173 plane
->possible_crtcs
= possible_crtcs
;
1176 list_add_tail(&plane
->head
, &config
->plane_list
);
1177 config
->num_total_plane
++;
1178 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1179 config
->num_overlay_plane
++;
1181 drm_object_attach_property(&plane
->base
,
1182 config
->plane_type_property
,
1185 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
1186 drm_object_attach_property(&plane
->base
, config
->prop_fb_id
, 0);
1187 drm_object_attach_property(&plane
->base
, config
->prop_crtc_id
, 0);
1188 drm_object_attach_property(&plane
->base
, config
->prop_crtc_x
, 0);
1189 drm_object_attach_property(&plane
->base
, config
->prop_crtc_y
, 0);
1190 drm_object_attach_property(&plane
->base
, config
->prop_crtc_w
, 0);
1191 drm_object_attach_property(&plane
->base
, config
->prop_crtc_h
, 0);
1192 drm_object_attach_property(&plane
->base
, config
->prop_src_x
, 0);
1193 drm_object_attach_property(&plane
->base
, config
->prop_src_y
, 0);
1194 drm_object_attach_property(&plane
->base
, config
->prop_src_w
, 0);
1195 drm_object_attach_property(&plane
->base
, config
->prop_src_h
, 0);
1200 EXPORT_SYMBOL(drm_universal_plane_init
);
1203 * drm_plane_init - Initialize a legacy plane
1205 * @plane: plane object to init
1206 * @possible_crtcs: bitmask of possible CRTCs
1207 * @funcs: callbacks for the new plane
1208 * @formats: array of supported formats (%DRM_FORMAT_*)
1209 * @format_count: number of elements in @formats
1210 * @is_primary: plane type (primary vs overlay)
1212 * Legacy API to initialize a DRM plane.
1214 * New drivers should call drm_universal_plane_init() instead.
1217 * Zero on success, error code on failure.
1219 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1220 unsigned long possible_crtcs
,
1221 const struct drm_plane_funcs
*funcs
,
1222 const uint32_t *formats
, uint32_t format_count
,
1225 enum drm_plane_type type
;
1227 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1228 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1229 formats
, format_count
, type
);
1231 EXPORT_SYMBOL(drm_plane_init
);
1234 * drm_plane_cleanup - Clean up the core plane usage
1235 * @plane: plane to cleanup
1237 * This function cleans up @plane and removes it from the DRM mode setting
1238 * core. Note that the function does *not* free the plane structure itself,
1239 * this is the responsibility of the caller.
1241 void drm_plane_cleanup(struct drm_plane
*plane
)
1243 struct drm_device
*dev
= plane
->dev
;
1245 drm_modeset_lock_all(dev
);
1246 kfree(plane
->format_types
);
1247 drm_mode_object_put(dev
, &plane
->base
);
1249 BUG_ON(list_empty(&plane
->head
));
1251 list_del(&plane
->head
);
1252 dev
->mode_config
.num_total_plane
--;
1253 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1254 dev
->mode_config
.num_overlay_plane
--;
1255 drm_modeset_unlock_all(dev
);
1257 WARN_ON(plane
->state
&& !plane
->funcs
->atomic_destroy_state
);
1258 if (plane
->state
&& plane
->funcs
->atomic_destroy_state
)
1259 plane
->funcs
->atomic_destroy_state(plane
, plane
->state
);
1261 memset(plane
, 0, sizeof(*plane
));
1263 EXPORT_SYMBOL(drm_plane_cleanup
);
1266 * drm_plane_index - find the index of a registered plane
1267 * @plane: plane to find index for
1269 * Given a registered plane, return the index of that CRTC within a DRM
1270 * device's list of planes.
1272 unsigned int drm_plane_index(struct drm_plane
*plane
)
1274 unsigned int index
= 0;
1275 struct drm_plane
*tmp
;
1277 list_for_each_entry(tmp
, &plane
->dev
->mode_config
.plane_list
, head
) {
1286 EXPORT_SYMBOL(drm_plane_index
);
1289 * drm_plane_force_disable - Forcibly disable a plane
1290 * @plane: plane to disable
1292 * Forces the plane to be disabled.
1294 * Used when the plane's current framebuffer is destroyed,
1295 * and when restoring fbdev mode.
1297 void drm_plane_force_disable(struct drm_plane
*plane
)
1304 plane
->old_fb
= plane
->fb
;
1305 ret
= plane
->funcs
->disable_plane(plane
);
1307 DRM_ERROR("failed to disable plane with busy fb\n");
1308 plane
->old_fb
= NULL
;
1311 /* disconnect the plane from the fb and crtc: */
1312 drm_framebuffer_unreference(plane
->old_fb
);
1313 plane
->old_fb
= NULL
;
1317 EXPORT_SYMBOL(drm_plane_force_disable
);
1319 static int drm_mode_create_standard_properties(struct drm_device
*dev
)
1321 struct drm_property
*prop
;
1324 * Standard properties (apply to all connectors)
1326 prop
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1327 DRM_MODE_PROP_IMMUTABLE
,
1331 dev
->mode_config
.edid_property
= prop
;
1333 prop
= drm_property_create_enum(dev
, 0,
1334 "DPMS", drm_dpms_enum_list
,
1335 ARRAY_SIZE(drm_dpms_enum_list
));
1338 dev
->mode_config
.dpms_property
= prop
;
1340 prop
= drm_property_create(dev
,
1341 DRM_MODE_PROP_BLOB
|
1342 DRM_MODE_PROP_IMMUTABLE
,
1346 dev
->mode_config
.path_property
= prop
;
1348 prop
= drm_property_create(dev
,
1349 DRM_MODE_PROP_BLOB
|
1350 DRM_MODE_PROP_IMMUTABLE
,
1354 dev
->mode_config
.tile_property
= prop
;
1356 prop
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1357 "type", drm_plane_type_enum_list
,
1358 ARRAY_SIZE(drm_plane_type_enum_list
));
1361 dev
->mode_config
.plane_type_property
= prop
;
1363 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1364 "SRC_X", 0, UINT_MAX
);
1367 dev
->mode_config
.prop_src_x
= prop
;
1369 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1370 "SRC_Y", 0, UINT_MAX
);
1373 dev
->mode_config
.prop_src_y
= prop
;
1375 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1376 "SRC_W", 0, UINT_MAX
);
1379 dev
->mode_config
.prop_src_w
= prop
;
1381 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1382 "SRC_H", 0, UINT_MAX
);
1385 dev
->mode_config
.prop_src_h
= prop
;
1387 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1388 "CRTC_X", INT_MIN
, INT_MAX
);
1391 dev
->mode_config
.prop_crtc_x
= prop
;
1393 prop
= drm_property_create_signed_range(dev
, DRM_MODE_PROP_ATOMIC
,
1394 "CRTC_Y", INT_MIN
, INT_MAX
);
1397 dev
->mode_config
.prop_crtc_y
= prop
;
1399 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1400 "CRTC_W", 0, INT_MAX
);
1403 dev
->mode_config
.prop_crtc_w
= prop
;
1405 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_ATOMIC
,
1406 "CRTC_H", 0, INT_MAX
);
1409 dev
->mode_config
.prop_crtc_h
= prop
;
1411 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1412 "FB_ID", DRM_MODE_OBJECT_FB
);
1415 dev
->mode_config
.prop_fb_id
= prop
;
1417 prop
= drm_property_create_object(dev
, DRM_MODE_PROP_ATOMIC
,
1418 "CRTC_ID", DRM_MODE_OBJECT_CRTC
);
1421 dev
->mode_config
.prop_crtc_id
= prop
;
1423 prop
= drm_property_create_bool(dev
, DRM_MODE_PROP_ATOMIC
,
1427 dev
->mode_config
.prop_active
= prop
;
1433 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1436 * Called by a driver the first time a DVI-I connector is made.
1438 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1440 struct drm_property
*dvi_i_selector
;
1441 struct drm_property
*dvi_i_subconnector
;
1443 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1447 drm_property_create_enum(dev
, 0,
1448 "select subconnector",
1449 drm_dvi_i_select_enum_list
,
1450 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1451 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1453 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1455 drm_dvi_i_subconnector_enum_list
,
1456 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1457 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1461 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1464 * drm_create_tv_properties - create TV specific connector properties
1466 * @num_modes: number of different TV formats (modes) supported
1467 * @modes: array of pointers to strings containing name of each format
1469 * Called by a driver's TV initialization routine, this function creates
1470 * the TV specific connector properties for a given device. Caller is
1471 * responsible for allocating a list of format names and passing them to
1474 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1475 unsigned int num_modes
,
1478 struct drm_property
*tv_selector
;
1479 struct drm_property
*tv_subconnector
;
1482 if (dev
->mode_config
.tv_select_subconnector_property
)
1486 * Basic connector properties
1488 tv_selector
= drm_property_create_enum(dev
, 0,
1489 "select subconnector",
1490 drm_tv_select_enum_list
,
1491 ARRAY_SIZE(drm_tv_select_enum_list
));
1492 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1495 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1497 drm_tv_subconnector_enum_list
,
1498 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1499 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1502 * Other, TV specific properties: margins & TV modes.
1504 dev
->mode_config
.tv_left_margin_property
=
1505 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1507 dev
->mode_config
.tv_right_margin_property
=
1508 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1510 dev
->mode_config
.tv_top_margin_property
=
1511 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1513 dev
->mode_config
.tv_bottom_margin_property
=
1514 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1516 dev
->mode_config
.tv_mode_property
=
1517 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1519 for (i
= 0; i
< num_modes
; i
++)
1520 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1523 dev
->mode_config
.tv_brightness_property
=
1524 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1526 dev
->mode_config
.tv_contrast_property
=
1527 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1529 dev
->mode_config
.tv_flicker_reduction_property
=
1530 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1532 dev
->mode_config
.tv_overscan_property
=
1533 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1535 dev
->mode_config
.tv_saturation_property
=
1536 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1538 dev
->mode_config
.tv_hue_property
=
1539 drm_property_create_range(dev
, 0, "hue", 0, 100);
1543 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1546 * drm_mode_create_scaling_mode_property - create scaling mode property
1549 * Called by a driver the first time it's needed, must be attached to desired
1552 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1554 struct drm_property
*scaling_mode
;
1556 if (dev
->mode_config
.scaling_mode_property
)
1560 drm_property_create_enum(dev
, 0, "scaling mode",
1561 drm_scaling_mode_enum_list
,
1562 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1564 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1568 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1571 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1574 * Called by a driver the first time it's needed, must be attached to desired
1578 * Zero on success, negative errno on failure.
1580 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1582 if (dev
->mode_config
.aspect_ratio_property
)
1585 dev
->mode_config
.aspect_ratio_property
=
1586 drm_property_create_enum(dev
, 0, "aspect ratio",
1587 drm_aspect_ratio_enum_list
,
1588 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1590 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1595 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1598 * drm_mode_create_dirty_property - create dirty property
1601 * Called by a driver the first time it's needed, must be attached to desired
1604 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1606 struct drm_property
*dirty_info
;
1608 if (dev
->mode_config
.dirty_info_property
)
1612 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1614 drm_dirty_info_enum_list
,
1615 ARRAY_SIZE(drm_dirty_info_enum_list
));
1616 dev
->mode_config
.dirty_info_property
= dirty_info
;
1620 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1623 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1626 * Create the the suggested x/y offset property for connectors.
1628 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1630 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1633 dev
->mode_config
.suggested_x_property
=
1634 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1636 dev
->mode_config
.suggested_y_property
=
1637 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1639 if (dev
->mode_config
.suggested_x_property
== NULL
||
1640 dev
->mode_config
.suggested_y_property
== NULL
)
1644 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1646 static int drm_mode_group_init(struct drm_device
*dev
, struct drm_mode_group
*group
)
1648 uint32_t total_objects
= 0;
1650 total_objects
+= dev
->mode_config
.num_crtc
;
1651 total_objects
+= dev
->mode_config
.num_connector
;
1652 total_objects
+= dev
->mode_config
.num_encoder
;
1654 group
->id_list
= kcalloc(total_objects
, sizeof(uint32_t), GFP_KERNEL
);
1655 if (!group
->id_list
)
1658 group
->num_crtcs
= 0;
1659 group
->num_connectors
= 0;
1660 group
->num_encoders
= 0;
1664 void drm_mode_group_destroy(struct drm_mode_group
*group
)
1666 kfree(group
->id_list
);
1667 group
->id_list
= NULL
;
1671 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1672 * the drm core's responsibility to set up mode control groups.
1674 int drm_mode_group_init_legacy_group(struct drm_device
*dev
,
1675 struct drm_mode_group
*group
)
1677 struct drm_crtc
*crtc
;
1678 struct drm_encoder
*encoder
;
1679 struct drm_connector
*connector
;
1682 ret
= drm_mode_group_init(dev
, group
);
1686 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
1687 group
->id_list
[group
->num_crtcs
++] = crtc
->base
.id
;
1689 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
1690 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
++] =
1693 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1694 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1695 group
->num_connectors
++] = connector
->base
.id
;
1699 EXPORT_SYMBOL(drm_mode_group_init_legacy_group
);
1701 void drm_reinit_primary_mode_group(struct drm_device
*dev
)
1703 drm_modeset_lock_all(dev
);
1704 drm_mode_group_destroy(&dev
->primary
->mode_group
);
1705 drm_mode_group_init_legacy_group(dev
, &dev
->primary
->mode_group
);
1706 drm_modeset_unlock_all(dev
);
1708 EXPORT_SYMBOL(drm_reinit_primary_mode_group
);
1711 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1712 * @out: drm_mode_modeinfo struct to return to the user
1713 * @in: drm_display_mode to use
1715 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1718 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo
*out
,
1719 const struct drm_display_mode
*in
)
1721 WARN(in
->hdisplay
> USHRT_MAX
|| in
->hsync_start
> USHRT_MAX
||
1722 in
->hsync_end
> USHRT_MAX
|| in
->htotal
> USHRT_MAX
||
1723 in
->hskew
> USHRT_MAX
|| in
->vdisplay
> USHRT_MAX
||
1724 in
->vsync_start
> USHRT_MAX
|| in
->vsync_end
> USHRT_MAX
||
1725 in
->vtotal
> USHRT_MAX
|| in
->vscan
> USHRT_MAX
,
1726 "timing values too large for mode info\n");
1728 out
->clock
= in
->clock
;
1729 out
->hdisplay
= in
->hdisplay
;
1730 out
->hsync_start
= in
->hsync_start
;
1731 out
->hsync_end
= in
->hsync_end
;
1732 out
->htotal
= in
->htotal
;
1733 out
->hskew
= in
->hskew
;
1734 out
->vdisplay
= in
->vdisplay
;
1735 out
->vsync_start
= in
->vsync_start
;
1736 out
->vsync_end
= in
->vsync_end
;
1737 out
->vtotal
= in
->vtotal
;
1738 out
->vscan
= in
->vscan
;
1739 out
->vrefresh
= in
->vrefresh
;
1740 out
->flags
= in
->flags
;
1741 out
->type
= in
->type
;
1742 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1743 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1747 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1748 * @out: drm_display_mode to return to the user
1749 * @in: drm_mode_modeinfo to use
1751 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1755 * Zero on success, negative errno on failure.
1757 static int drm_crtc_convert_umode(struct drm_display_mode
*out
,
1758 const struct drm_mode_modeinfo
*in
)
1760 if (in
->clock
> INT_MAX
|| in
->vrefresh
> INT_MAX
)
1763 if ((in
->flags
& DRM_MODE_FLAG_3D_MASK
) > DRM_MODE_FLAG_3D_MAX
)
1766 out
->clock
= in
->clock
;
1767 out
->hdisplay
= in
->hdisplay
;
1768 out
->hsync_start
= in
->hsync_start
;
1769 out
->hsync_end
= in
->hsync_end
;
1770 out
->htotal
= in
->htotal
;
1771 out
->hskew
= in
->hskew
;
1772 out
->vdisplay
= in
->vdisplay
;
1773 out
->vsync_start
= in
->vsync_start
;
1774 out
->vsync_end
= in
->vsync_end
;
1775 out
->vtotal
= in
->vtotal
;
1776 out
->vscan
= in
->vscan
;
1777 out
->vrefresh
= in
->vrefresh
;
1778 out
->flags
= in
->flags
;
1779 out
->type
= in
->type
;
1780 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1781 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1787 * drm_mode_getresources - get graphics configuration
1788 * @dev: drm device for the ioctl
1789 * @data: data pointer for the ioctl
1790 * @file_priv: drm file for the ioctl call
1792 * Construct a set of configuration description structures and return
1793 * them to the user, including CRTC, connector and framebuffer configuration.
1795 * Called by the user via ioctl.
1798 * Zero on success, negative errno on failure.
1800 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1801 struct drm_file
*file_priv
)
1803 struct drm_mode_card_res
*card_res
= data
;
1804 struct list_head
*lh
;
1805 struct drm_framebuffer
*fb
;
1806 struct drm_connector
*connector
;
1807 struct drm_crtc
*crtc
;
1808 struct drm_encoder
*encoder
;
1810 int connector_count
= 0;
1813 int encoder_count
= 0;
1815 uint32_t __user
*fb_id
;
1816 uint32_t __user
*crtc_id
;
1817 uint32_t __user
*connector_id
;
1818 uint32_t __user
*encoder_id
;
1819 struct drm_mode_group
*mode_group
;
1821 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1825 mutex_lock(&file_priv
->fbs_lock
);
1827 * For the non-control nodes we need to limit the list of resources
1828 * by IDs in the group list for this node
1830 list_for_each(lh
, &file_priv
->fbs
)
1833 /* handle this in 4 parts */
1835 if (card_res
->count_fbs
>= fb_count
) {
1837 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1838 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1839 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1840 mutex_unlock(&file_priv
->fbs_lock
);
1846 card_res
->count_fbs
= fb_count
;
1847 mutex_unlock(&file_priv
->fbs_lock
);
1849 /* mode_config.mutex protects the connector list against e.g. DP MST
1850 * connector hot-adding. CRTC/Plane lists are invariant. */
1851 mutex_lock(&dev
->mode_config
.mutex
);
1852 if (!drm_is_primary_client(file_priv
)) {
1855 list_for_each(lh
, &dev
->mode_config
.crtc_list
)
1858 list_for_each(lh
, &dev
->mode_config
.connector_list
)
1861 list_for_each(lh
, &dev
->mode_config
.encoder_list
)
1865 mode_group
= &file_priv
->master
->minor
->mode_group
;
1866 crtc_count
= mode_group
->num_crtcs
;
1867 connector_count
= mode_group
->num_connectors
;
1868 encoder_count
= mode_group
->num_encoders
;
1871 card_res
->max_height
= dev
->mode_config
.max_height
;
1872 card_res
->min_height
= dev
->mode_config
.min_height
;
1873 card_res
->max_width
= dev
->mode_config
.max_width
;
1874 card_res
->min_width
= dev
->mode_config
.min_width
;
1877 if (card_res
->count_crtcs
>= crtc_count
) {
1879 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1881 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
,
1883 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1884 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1891 for (i
= 0; i
< mode_group
->num_crtcs
; i
++) {
1892 if (put_user(mode_group
->id_list
[i
],
1893 crtc_id
+ copied
)) {
1901 card_res
->count_crtcs
= crtc_count
;
1904 if (card_res
->count_encoders
>= encoder_count
) {
1906 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1908 list_for_each_entry(encoder
,
1909 &dev
->mode_config
.encoder_list
,
1911 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1913 if (put_user(encoder
->base
.id
, encoder_id
+
1921 for (i
= mode_group
->num_crtcs
; i
< mode_group
->num_crtcs
+ mode_group
->num_encoders
; i
++) {
1922 if (put_user(mode_group
->id_list
[i
],
1923 encoder_id
+ copied
)) {
1932 card_res
->count_encoders
= encoder_count
;
1935 if (card_res
->count_connectors
>= connector_count
) {
1937 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1939 list_for_each_entry(connector
,
1940 &dev
->mode_config
.connector_list
,
1942 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1945 if (put_user(connector
->base
.id
,
1946 connector_id
+ copied
)) {
1953 int start
= mode_group
->num_crtcs
+
1954 mode_group
->num_encoders
;
1955 for (i
= start
; i
< start
+ mode_group
->num_connectors
; i
++) {
1956 if (put_user(mode_group
->id_list
[i
],
1957 connector_id
+ copied
)) {
1965 card_res
->count_connectors
= connector_count
;
1967 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1968 card_res
->count_connectors
, card_res
->count_encoders
);
1971 mutex_unlock(&dev
->mode_config
.mutex
);
1976 * drm_mode_getcrtc - get CRTC configuration
1977 * @dev: drm device for the ioctl
1978 * @data: data pointer for the ioctl
1979 * @file_priv: drm file for the ioctl call
1981 * Construct a CRTC configuration structure to return to the user.
1983 * Called by the user via ioctl.
1986 * Zero on success, negative errno on failure.
1988 int drm_mode_getcrtc(struct drm_device
*dev
,
1989 void *data
, struct drm_file
*file_priv
)
1991 struct drm_mode_crtc
*crtc_resp
= data
;
1992 struct drm_crtc
*crtc
;
1994 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1997 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
2001 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
2002 crtc_resp
->x
= crtc
->x
;
2003 crtc_resp
->y
= crtc
->y
;
2004 crtc_resp
->gamma_size
= crtc
->gamma_size
;
2005 if (crtc
->primary
->fb
)
2006 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
2008 crtc_resp
->fb_id
= 0;
2010 if (crtc
->enabled
) {
2012 drm_crtc_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
2013 crtc_resp
->mode_valid
= 1;
2016 crtc_resp
->mode_valid
= 0;
2018 drm_modeset_unlock_crtc(crtc
);
2023 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
2024 const struct drm_file
*file_priv
)
2027 * If user-space hasn't configured the driver to expose the stereo 3D
2028 * modes, don't expose them.
2030 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
2036 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
2038 /* For atomic drivers only state objects are synchronously updated and
2039 * protected by modeset locks, so check those first. */
2040 if (connector
->state
)
2041 return connector
->state
->best_encoder
;
2042 return connector
->encoder
;
2045 /* helper for getconnector and getproperties ioctls */
2046 static int get_properties(struct drm_mode_object
*obj
, bool atomic
,
2047 uint32_t __user
*prop_ptr
, uint64_t __user
*prop_values
,
2048 uint32_t *arg_count_props
)
2053 props_count
= obj
->properties
->count
;
2055 props_count
-= obj
->properties
->atomic_count
;
2057 if ((*arg_count_props
>= props_count
) && props_count
) {
2058 for (i
= 0, copied
= 0; copied
< props_count
; i
++) {
2059 struct drm_property
*prop
= obj
->properties
->properties
[i
];
2062 if ((prop
->flags
& DRM_MODE_PROP_ATOMIC
) && !atomic
)
2065 ret
= drm_object_property_get_value(obj
, prop
, &val
);
2069 if (put_user(prop
->base
.id
, prop_ptr
+ copied
))
2072 if (put_user(val
, prop_values
+ copied
))
2078 *arg_count_props
= props_count
;
2084 * drm_mode_getconnector - get connector configuration
2085 * @dev: drm device for the ioctl
2086 * @data: data pointer for the ioctl
2087 * @file_priv: drm file for the ioctl call
2089 * Construct a connector configuration structure to return to the user.
2091 * Called by the user via ioctl.
2094 * Zero on success, negative errno on failure.
2096 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
2097 struct drm_file
*file_priv
)
2099 struct drm_mode_get_connector
*out_resp
= data
;
2100 struct drm_connector
*connector
;
2101 struct drm_encoder
*encoder
;
2102 struct drm_display_mode
*mode
;
2104 int encoders_count
= 0;
2108 struct drm_mode_modeinfo u_mode
;
2109 struct drm_mode_modeinfo __user
*mode_ptr
;
2110 uint32_t __user
*encoder_ptr
;
2112 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2115 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
2117 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
2119 mutex_lock(&dev
->mode_config
.mutex
);
2121 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
2127 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++)
2128 if (connector
->encoder_ids
[i
] != 0)
2131 if (out_resp
->count_modes
== 0) {
2132 connector
->funcs
->fill_modes(connector
,
2133 dev
->mode_config
.max_width
,
2134 dev
->mode_config
.max_height
);
2137 /* delayed so we get modes regardless of pre-fill_modes state */
2138 list_for_each_entry(mode
, &connector
->modes
, head
)
2139 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2142 out_resp
->connector_id
= connector
->base
.id
;
2143 out_resp
->connector_type
= connector
->connector_type
;
2144 out_resp
->connector_type_id
= connector
->connector_type_id
;
2145 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2146 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2147 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2148 out_resp
->connection
= connector
->status
;
2150 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2151 encoder
= drm_connector_get_encoder(connector
);
2153 out_resp
->encoder_id
= encoder
->base
.id
;
2155 out_resp
->encoder_id
= 0;
2158 * This ioctl is called twice, once to determine how much space is
2159 * needed, and the 2nd time to fill it.
2161 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2163 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2164 list_for_each_entry(mode
, &connector
->modes
, head
) {
2165 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2168 drm_crtc_convert_to_umode(&u_mode
, mode
);
2169 if (copy_to_user(mode_ptr
+ copied
,
2170 &u_mode
, sizeof(u_mode
))) {
2177 out_resp
->count_modes
= mode_count
;
2179 ret
= get_properties(&connector
->base
, file_priv
->atomic
,
2180 (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
),
2181 (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
),
2182 &out_resp
->count_props
);
2186 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2188 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2189 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2190 if (connector
->encoder_ids
[i
] != 0) {
2191 if (put_user(connector
->encoder_ids
[i
],
2192 encoder_ptr
+ copied
)) {
2200 out_resp
->count_encoders
= encoders_count
;
2203 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2206 mutex_unlock(&dev
->mode_config
.mutex
);
2211 static struct drm_crtc
*drm_encoder_get_crtc(struct drm_encoder
*encoder
)
2213 struct drm_connector
*connector
;
2214 struct drm_device
*dev
= encoder
->dev
;
2215 bool uses_atomic
= false;
2217 /* For atomic drivers only state objects are synchronously updated and
2218 * protected by modeset locks, so check those first. */
2219 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
2220 if (!connector
->state
)
2225 if (connector
->state
->best_encoder
!= encoder
)
2228 return connector
->state
->crtc
;
2231 /* Don't return stale data (e.g. pending async disable). */
2235 return encoder
->crtc
;
2239 * drm_mode_getencoder - get encoder configuration
2240 * @dev: drm device for the ioctl
2241 * @data: data pointer for the ioctl
2242 * @file_priv: drm file for the ioctl call
2244 * Construct a encoder configuration structure to return to the user.
2246 * Called by the user via ioctl.
2249 * Zero on success, negative errno on failure.
2251 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2252 struct drm_file
*file_priv
)
2254 struct drm_mode_get_encoder
*enc_resp
= data
;
2255 struct drm_encoder
*encoder
;
2256 struct drm_crtc
*crtc
;
2258 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2261 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2265 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2266 crtc
= drm_encoder_get_crtc(encoder
);
2268 enc_resp
->crtc_id
= crtc
->base
.id
;
2269 else if (encoder
->crtc
)
2270 enc_resp
->crtc_id
= encoder
->crtc
->base
.id
;
2272 enc_resp
->crtc_id
= 0;
2273 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2275 enc_resp
->encoder_type
= encoder
->encoder_type
;
2276 enc_resp
->encoder_id
= encoder
->base
.id
;
2277 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2278 enc_resp
->possible_clones
= encoder
->possible_clones
;
2284 * drm_mode_getplane_res - enumerate all plane resources
2287 * @file_priv: DRM file info
2289 * Construct a list of plane ids to return to the user.
2291 * Called by the user via ioctl.
2294 * Zero on success, negative errno on failure.
2296 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2297 struct drm_file
*file_priv
)
2299 struct drm_mode_get_plane_res
*plane_resp
= data
;
2300 struct drm_mode_config
*config
;
2301 struct drm_plane
*plane
;
2302 uint32_t __user
*plane_ptr
;
2304 unsigned num_planes
;
2306 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2309 config
= &dev
->mode_config
;
2311 if (file_priv
->universal_planes
)
2312 num_planes
= config
->num_total_plane
;
2314 num_planes
= config
->num_overlay_plane
;
2317 * This ioctl is called twice, once to determine how much space is
2318 * needed, and the 2nd time to fill it.
2321 (plane_resp
->count_planes
>= num_planes
)) {
2322 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2324 /* Plane lists are invariant, no locking needed. */
2325 list_for_each_entry(plane
, &config
->plane_list
, head
) {
2327 * Unless userspace set the 'universal planes'
2328 * capability bit, only advertise overlays.
2330 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2331 !file_priv
->universal_planes
)
2334 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2339 plane_resp
->count_planes
= num_planes
;
2345 * drm_mode_getplane - get plane configuration
2348 * @file_priv: DRM file info
2350 * Construct a plane configuration structure to return to the user.
2352 * Called by the user via ioctl.
2355 * Zero on success, negative errno on failure.
2357 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2358 struct drm_file
*file_priv
)
2360 struct drm_mode_get_plane
*plane_resp
= data
;
2361 struct drm_plane
*plane
;
2362 uint32_t __user
*format_ptr
;
2364 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2367 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2371 drm_modeset_lock(&plane
->mutex
, NULL
);
2373 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2375 plane_resp
->crtc_id
= 0;
2378 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2380 plane_resp
->fb_id
= 0;
2381 drm_modeset_unlock(&plane
->mutex
);
2383 plane_resp
->plane_id
= plane
->base
.id
;
2384 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2385 plane_resp
->gamma_size
= 0;
2388 * This ioctl is called twice, once to determine how much space is
2389 * needed, and the 2nd time to fill it.
2391 if (plane
->format_count
&&
2392 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2393 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2394 if (copy_to_user(format_ptr
,
2395 plane
->format_types
,
2396 sizeof(uint32_t) * plane
->format_count
)) {
2400 plane_resp
->count_format_types
= plane
->format_count
;
2406 * setplane_internal - setplane handler for internal callers
2408 * Note that we assume an extra reference has already been taken on fb. If the
2409 * update fails, this reference will be dropped before return; if it succeeds,
2410 * the previous framebuffer (if any) will be unreferenced instead.
2412 * src_{x,y,w,h} are provided in 16.16 fixed point format
2414 static int __setplane_internal(struct drm_plane
*plane
,
2415 struct drm_crtc
*crtc
,
2416 struct drm_framebuffer
*fb
,
2417 int32_t crtc_x
, int32_t crtc_y
,
2418 uint32_t crtc_w
, uint32_t crtc_h
,
2419 /* src_{x,y,w,h} values are 16.16 fixed point */
2420 uint32_t src_x
, uint32_t src_y
,
2421 uint32_t src_w
, uint32_t src_h
)
2424 unsigned int fb_width
, fb_height
;
2427 /* No fb means shut it down */
2429 plane
->old_fb
= plane
->fb
;
2430 ret
= plane
->funcs
->disable_plane(plane
);
2435 plane
->old_fb
= NULL
;
2440 /* Check whether this plane is usable on this CRTC */
2441 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2442 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2447 /* Check whether this plane supports the fb pixel format. */
2448 for (i
= 0; i
< plane
->format_count
; i
++)
2449 if (fb
->pixel_format
== plane
->format_types
[i
])
2451 if (i
== plane
->format_count
) {
2452 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2453 drm_get_format_name(fb
->pixel_format
));
2458 fb_width
= fb
->width
<< 16;
2459 fb_height
= fb
->height
<< 16;
2461 /* Make sure source coordinates are inside the fb. */
2462 if (src_w
> fb_width
||
2463 src_x
> fb_width
- src_w
||
2464 src_h
> fb_height
||
2465 src_y
> fb_height
- src_h
) {
2466 DRM_DEBUG_KMS("Invalid source coordinates "
2467 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2468 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2469 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2470 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2471 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2476 plane
->old_fb
= plane
->fb
;
2477 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2478 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2479 src_x
, src_y
, src_w
, src_h
);
2485 plane
->old_fb
= NULL
;
2490 drm_framebuffer_unreference(fb
);
2492 drm_framebuffer_unreference(plane
->old_fb
);
2493 plane
->old_fb
= NULL
;
2498 static int setplane_internal(struct drm_plane
*plane
,
2499 struct drm_crtc
*crtc
,
2500 struct drm_framebuffer
*fb
,
2501 int32_t crtc_x
, int32_t crtc_y
,
2502 uint32_t crtc_w
, uint32_t crtc_h
,
2503 /* src_{x,y,w,h} values are 16.16 fixed point */
2504 uint32_t src_x
, uint32_t src_y
,
2505 uint32_t src_w
, uint32_t src_h
)
2509 drm_modeset_lock_all(plane
->dev
);
2510 ret
= __setplane_internal(plane
, crtc
, fb
,
2511 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2512 src_x
, src_y
, src_w
, src_h
);
2513 drm_modeset_unlock_all(plane
->dev
);
2519 * drm_mode_setplane - configure a plane's configuration
2521 * @data: ioctl data*
2522 * @file_priv: DRM file info
2524 * Set plane configuration, including placement, fb, scaling, and other factors.
2525 * Or pass a NULL fb to disable (planes may be disabled without providing a
2529 * Zero on success, negative errno on failure.
2531 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2532 struct drm_file
*file_priv
)
2534 struct drm_mode_set_plane
*plane_req
= data
;
2535 struct drm_plane
*plane
;
2536 struct drm_crtc
*crtc
= NULL
;
2537 struct drm_framebuffer
*fb
= NULL
;
2539 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2542 /* Give drivers some help against integer overflows */
2543 if (plane_req
->crtc_w
> INT_MAX
||
2544 plane_req
->crtc_x
> INT_MAX
- (int32_t) plane_req
->crtc_w
||
2545 plane_req
->crtc_h
> INT_MAX
||
2546 plane_req
->crtc_y
> INT_MAX
- (int32_t) plane_req
->crtc_h
) {
2547 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2548 plane_req
->crtc_w
, plane_req
->crtc_h
,
2549 plane_req
->crtc_x
, plane_req
->crtc_y
);
2554 * First, find the plane, crtc, and fb objects. If not available,
2555 * we don't bother to call the driver.
2557 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
2559 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2560 plane_req
->plane_id
);
2564 if (plane_req
->fb_id
) {
2565 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2567 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2572 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
2574 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2575 plane_req
->crtc_id
);
2581 * setplane_internal will take care of deref'ing either the old or new
2582 * framebuffer depending on success.
2584 return setplane_internal(plane
, crtc
, fb
,
2585 plane_req
->crtc_x
, plane_req
->crtc_y
,
2586 plane_req
->crtc_w
, plane_req
->crtc_h
,
2587 plane_req
->src_x
, plane_req
->src_y
,
2588 plane_req
->src_w
, plane_req
->src_h
);
2592 * drm_mode_set_config_internal - helper to call ->set_config
2593 * @set: modeset config to set
2595 * This is a little helper to wrap internal calls to the ->set_config driver
2596 * interface. The only thing it adds is correct refcounting dance.
2599 * Zero on success, negative errno on failure.
2601 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2603 struct drm_crtc
*crtc
= set
->crtc
;
2604 struct drm_framebuffer
*fb
;
2605 struct drm_crtc
*tmp
;
2609 * NOTE: ->set_config can also disable other crtcs (if we steal all
2610 * connectors from it), hence we need to refcount the fbs across all
2611 * crtcs. Atomic modeset will have saner semantics ...
2613 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
)
2614 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2618 ret
= crtc
->funcs
->set_config(set
);
2620 crtc
->primary
->crtc
= crtc
;
2621 crtc
->primary
->fb
= fb
;
2624 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
2625 if (tmp
->primary
->fb
)
2626 drm_framebuffer_reference(tmp
->primary
->fb
);
2627 if (tmp
->primary
->old_fb
)
2628 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2629 tmp
->primary
->old_fb
= NULL
;
2634 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2637 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2638 * @mode: mode to query
2639 * @hdisplay: hdisplay value to fill in
2640 * @vdisplay: vdisplay value to fill in
2642 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2643 * the appropriate layout.
2645 void drm_crtc_get_hv_timing(const struct drm_display_mode
*mode
,
2646 int *hdisplay
, int *vdisplay
)
2648 struct drm_display_mode adjusted
;
2650 drm_mode_copy(&adjusted
, mode
);
2651 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE_ONLY
);
2652 *hdisplay
= adjusted
.crtc_hdisplay
;
2653 *vdisplay
= adjusted
.crtc_vdisplay
;
2655 EXPORT_SYMBOL(drm_crtc_get_hv_timing
);
2658 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2660 * @crtc: CRTC that framebuffer will be displayed on
2663 * @mode: mode that framebuffer will be displayed under
2664 * @fb: framebuffer to check size of
2666 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2668 const struct drm_display_mode
*mode
,
2669 const struct drm_framebuffer
*fb
)
2672 int hdisplay
, vdisplay
;
2674 drm_crtc_get_hv_timing(mode
, &hdisplay
, &vdisplay
);
2676 if (crtc
->invert_dimensions
)
2677 swap(hdisplay
, vdisplay
);
2679 if (hdisplay
> fb
->width
||
2680 vdisplay
> fb
->height
||
2681 x
> fb
->width
- hdisplay
||
2682 y
> fb
->height
- vdisplay
) {
2683 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2684 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2685 crtc
->invert_dimensions
? " (inverted)" : "");
2691 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2694 * drm_mode_setcrtc - set CRTC configuration
2695 * @dev: drm device for the ioctl
2696 * @data: data pointer for the ioctl
2697 * @file_priv: drm file for the ioctl call
2699 * Build a new CRTC configuration based on user request.
2701 * Called by the user via ioctl.
2704 * Zero on success, negative errno on failure.
2706 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2707 struct drm_file
*file_priv
)
2709 struct drm_mode_config
*config
= &dev
->mode_config
;
2710 struct drm_mode_crtc
*crtc_req
= data
;
2711 struct drm_crtc
*crtc
;
2712 struct drm_connector
**connector_set
= NULL
, *connector
;
2713 struct drm_framebuffer
*fb
= NULL
;
2714 struct drm_display_mode
*mode
= NULL
;
2715 struct drm_mode_set set
;
2716 uint32_t __user
*set_connectors_ptr
;
2720 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2723 /* For some reason crtc x/y offsets are signed internally. */
2724 if (crtc_req
->x
> INT_MAX
|| crtc_req
->y
> INT_MAX
)
2727 drm_modeset_lock_all(dev
);
2728 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2730 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2734 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2736 if (crtc_req
->mode_valid
) {
2737 /* If we have a mode we need a framebuffer. */
2738 /* If we pass -1, set the mode with the currently bound fb */
2739 if (crtc_req
->fb_id
== -1) {
2740 if (!crtc
->primary
->fb
) {
2741 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2745 fb
= crtc
->primary
->fb
;
2746 /* Make refcounting symmetric with the lookup path. */
2747 drm_framebuffer_reference(fb
);
2749 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2751 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2758 mode
= drm_mode_create(dev
);
2764 ret
= drm_crtc_convert_umode(mode
, &crtc_req
->mode
);
2766 DRM_DEBUG_KMS("Invalid mode\n");
2770 mode
->status
= drm_mode_validate_basic(mode
);
2771 if (mode
->status
!= MODE_OK
) {
2776 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2778 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2785 if (crtc_req
->count_connectors
== 0 && mode
) {
2786 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2791 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2792 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2793 crtc_req
->count_connectors
);
2798 if (crtc_req
->count_connectors
> 0) {
2801 /* Avoid unbounded kernel memory allocation */
2802 if (crtc_req
->count_connectors
> config
->num_connector
) {
2807 connector_set
= kmalloc_array(crtc_req
->count_connectors
,
2808 sizeof(struct drm_connector
*),
2810 if (!connector_set
) {
2815 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2816 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2817 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2822 connector
= drm_connector_find(dev
, out_id
);
2824 DRM_DEBUG_KMS("Connector id %d unknown\n",
2829 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2833 connector_set
[i
] = connector
;
2838 set
.x
= crtc_req
->x
;
2839 set
.y
= crtc_req
->y
;
2841 set
.connectors
= connector_set
;
2842 set
.num_connectors
= crtc_req
->count_connectors
;
2844 ret
= drm_mode_set_config_internal(&set
);
2848 drm_framebuffer_unreference(fb
);
2850 kfree(connector_set
);
2851 drm_mode_destroy(dev
, mode
);
2852 drm_modeset_unlock_all(dev
);
2857 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2858 * universal plane handler call
2859 * @crtc: crtc to update cursor for
2860 * @req: data pointer for the ioctl
2861 * @file_priv: drm file for the ioctl call
2863 * Legacy cursor ioctl's work directly with driver buffer handles. To
2864 * translate legacy ioctl calls into universal plane handler calls, we need to
2865 * wrap the native buffer handle in a drm_framebuffer.
2867 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2868 * buffer with a pitch of 4*width; the universal plane interface should be used
2869 * directly in cases where the hardware can support other buffer settings and
2870 * userspace wants to make use of these capabilities.
2873 * Zero on success, negative errno on failure.
2875 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2876 struct drm_mode_cursor2
*req
,
2877 struct drm_file
*file_priv
)
2879 struct drm_device
*dev
= crtc
->dev
;
2880 struct drm_framebuffer
*fb
= NULL
;
2881 struct drm_mode_fb_cmd2 fbreq
= {
2882 .width
= req
->width
,
2883 .height
= req
->height
,
2884 .pixel_format
= DRM_FORMAT_ARGB8888
,
2885 .pitches
= { req
->width
* 4 },
2886 .handles
= { req
->handle
},
2888 int32_t crtc_x
, crtc_y
;
2889 uint32_t crtc_w
= 0, crtc_h
= 0;
2890 uint32_t src_w
= 0, src_h
= 0;
2893 BUG_ON(!crtc
->cursor
);
2894 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2897 * Obtain fb we'll be using (either new or existing) and take an extra
2898 * reference to it if fb != null. setplane will take care of dropping
2899 * the reference if the plane update fails.
2901 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2903 fb
= internal_framebuffer_create(dev
, &fbreq
, file_priv
);
2905 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2912 fb
= crtc
->cursor
->fb
;
2914 drm_framebuffer_reference(fb
);
2917 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2921 crtc_x
= crtc
->cursor_x
;
2922 crtc_y
= crtc
->cursor_y
;
2927 crtc_h
= fb
->height
;
2928 src_w
= fb
->width
<< 16;
2929 src_h
= fb
->height
<< 16;
2933 * setplane_internal will take care of deref'ing either the old or new
2934 * framebuffer depending on success.
2936 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2937 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2938 0, 0, src_w
, src_h
);
2940 /* Update successful; save new cursor position, if necessary */
2941 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2942 crtc
->cursor_x
= req
->x
;
2943 crtc
->cursor_y
= req
->y
;
2949 static int drm_mode_cursor_common(struct drm_device
*dev
,
2950 struct drm_mode_cursor2
*req
,
2951 struct drm_file
*file_priv
)
2953 struct drm_crtc
*crtc
;
2956 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2959 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2962 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2964 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2969 * If this crtc has a universal cursor plane, call that plane's update
2970 * handler rather than using legacy cursor handlers.
2972 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
2974 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2978 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2979 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2983 /* Turns off the cursor if handle is 0 */
2984 if (crtc
->funcs
->cursor_set2
)
2985 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2986 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2988 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2989 req
->width
, req
->height
);
2992 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2993 if (crtc
->funcs
->cursor_move
) {
2994 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
3001 drm_modeset_unlock_crtc(crtc
);
3009 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3010 * @dev: drm device for the ioctl
3011 * @data: data pointer for the ioctl
3012 * @file_priv: drm file for the ioctl call
3014 * Set the cursor configuration based on user request.
3016 * Called by the user via ioctl.
3019 * Zero on success, negative errno on failure.
3021 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
3022 void *data
, struct drm_file
*file_priv
)
3024 struct drm_mode_cursor
*req
= data
;
3025 struct drm_mode_cursor2 new_req
;
3027 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
3028 new_req
.hot_x
= new_req
.hot_y
= 0;
3030 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
3034 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3035 * @dev: drm device for the ioctl
3036 * @data: data pointer for the ioctl
3037 * @file_priv: drm file for the ioctl call
3039 * Set the cursor configuration based on user request. This implements the 2nd
3040 * version of the cursor ioctl, which allows userspace to additionally specify
3041 * the hotspot of the pointer.
3043 * Called by the user via ioctl.
3046 * Zero on success, negative errno on failure.
3048 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
3049 void *data
, struct drm_file
*file_priv
)
3051 struct drm_mode_cursor2
*req
= data
;
3053 return drm_mode_cursor_common(dev
, req
, file_priv
);
3057 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3058 * @bpp: bits per pixels
3059 * @depth: bit depth per pixel
3061 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3062 * Useful in fbdev emulation code, since that deals in those values.
3064 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
3070 fmt
= DRM_FORMAT_C8
;
3074 fmt
= DRM_FORMAT_XRGB1555
;
3076 fmt
= DRM_FORMAT_RGB565
;
3079 fmt
= DRM_FORMAT_RGB888
;
3083 fmt
= DRM_FORMAT_XRGB8888
;
3084 else if (depth
== 30)
3085 fmt
= DRM_FORMAT_XRGB2101010
;
3087 fmt
= DRM_FORMAT_ARGB8888
;
3090 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3091 fmt
= DRM_FORMAT_XRGB8888
;
3097 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
3100 * drm_mode_addfb - add an FB to the graphics configuration
3101 * @dev: drm device for the ioctl
3102 * @data: data pointer for the ioctl
3103 * @file_priv: drm file for the ioctl call
3105 * Add a new FB to the specified CRTC, given a user request. This is the
3106 * original addfb ioctl which only supported RGB formats.
3108 * Called by the user via ioctl.
3111 * Zero on success, negative errno on failure.
3113 int drm_mode_addfb(struct drm_device
*dev
,
3114 void *data
, struct drm_file
*file_priv
)
3116 struct drm_mode_fb_cmd
*or = data
;
3117 struct drm_mode_fb_cmd2 r
= {};
3120 /* convert to new format and call new ioctl */
3121 r
.fb_id
= or->fb_id
;
3122 r
.width
= or->width
;
3123 r
.height
= or->height
;
3124 r
.pitches
[0] = or->pitch
;
3125 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
3126 r
.handles
[0] = or->handle
;
3128 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
3132 or->fb_id
= r
.fb_id
;
3137 static int format_check(const struct drm_mode_fb_cmd2
*r
)
3139 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3143 case DRM_FORMAT_RGB332
:
3144 case DRM_FORMAT_BGR233
:
3145 case DRM_FORMAT_XRGB4444
:
3146 case DRM_FORMAT_XBGR4444
:
3147 case DRM_FORMAT_RGBX4444
:
3148 case DRM_FORMAT_BGRX4444
:
3149 case DRM_FORMAT_ARGB4444
:
3150 case DRM_FORMAT_ABGR4444
:
3151 case DRM_FORMAT_RGBA4444
:
3152 case DRM_FORMAT_BGRA4444
:
3153 case DRM_FORMAT_XRGB1555
:
3154 case DRM_FORMAT_XBGR1555
:
3155 case DRM_FORMAT_RGBX5551
:
3156 case DRM_FORMAT_BGRX5551
:
3157 case DRM_FORMAT_ARGB1555
:
3158 case DRM_FORMAT_ABGR1555
:
3159 case DRM_FORMAT_RGBA5551
:
3160 case DRM_FORMAT_BGRA5551
:
3161 case DRM_FORMAT_RGB565
:
3162 case DRM_FORMAT_BGR565
:
3163 case DRM_FORMAT_RGB888
:
3164 case DRM_FORMAT_BGR888
:
3165 case DRM_FORMAT_XRGB8888
:
3166 case DRM_FORMAT_XBGR8888
:
3167 case DRM_FORMAT_RGBX8888
:
3168 case DRM_FORMAT_BGRX8888
:
3169 case DRM_FORMAT_ARGB8888
:
3170 case DRM_FORMAT_ABGR8888
:
3171 case DRM_FORMAT_RGBA8888
:
3172 case DRM_FORMAT_BGRA8888
:
3173 case DRM_FORMAT_XRGB2101010
:
3174 case DRM_FORMAT_XBGR2101010
:
3175 case DRM_FORMAT_RGBX1010102
:
3176 case DRM_FORMAT_BGRX1010102
:
3177 case DRM_FORMAT_ARGB2101010
:
3178 case DRM_FORMAT_ABGR2101010
:
3179 case DRM_FORMAT_RGBA1010102
:
3180 case DRM_FORMAT_BGRA1010102
:
3181 case DRM_FORMAT_YUYV
:
3182 case DRM_FORMAT_YVYU
:
3183 case DRM_FORMAT_UYVY
:
3184 case DRM_FORMAT_VYUY
:
3185 case DRM_FORMAT_AYUV
:
3186 case DRM_FORMAT_NV12
:
3187 case DRM_FORMAT_NV21
:
3188 case DRM_FORMAT_NV16
:
3189 case DRM_FORMAT_NV61
:
3190 case DRM_FORMAT_NV24
:
3191 case DRM_FORMAT_NV42
:
3192 case DRM_FORMAT_YUV410
:
3193 case DRM_FORMAT_YVU410
:
3194 case DRM_FORMAT_YUV411
:
3195 case DRM_FORMAT_YVU411
:
3196 case DRM_FORMAT_YUV420
:
3197 case DRM_FORMAT_YVU420
:
3198 case DRM_FORMAT_YUV422
:
3199 case DRM_FORMAT_YVU422
:
3200 case DRM_FORMAT_YUV444
:
3201 case DRM_FORMAT_YVU444
:
3204 DRM_DEBUG_KMS("invalid pixel format %s\n",
3205 drm_get_format_name(r
->pixel_format
));
3210 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3212 int ret
, hsub
, vsub
, num_planes
, i
;
3214 ret
= format_check(r
);
3216 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3217 drm_get_format_name(r
->pixel_format
));
3221 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3222 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3223 num_planes
= drm_format_num_planes(r
->pixel_format
);
3225 if (r
->width
== 0 || r
->width
% hsub
) {
3226 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3230 if (r
->height
== 0 || r
->height
% vsub
) {
3231 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3235 for (i
= 0; i
< num_planes
; i
++) {
3236 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3237 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3238 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3240 if (!r
->handles
[i
]) {
3241 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3245 if ((uint64_t) width
* cpp
> UINT_MAX
)
3248 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3251 if (r
->pitches
[i
] < width
* cpp
) {
3252 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3260 static struct drm_framebuffer
*
3261 internal_framebuffer_create(struct drm_device
*dev
,
3262 struct drm_mode_fb_cmd2
*r
,
3263 struct drm_file
*file_priv
)
3265 struct drm_mode_config
*config
= &dev
->mode_config
;
3266 struct drm_framebuffer
*fb
;
3269 if (r
->flags
& ~DRM_MODE_FB_INTERLACED
) {
3270 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3271 return ERR_PTR(-EINVAL
);
3274 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3275 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3276 r
->width
, config
->min_width
, config
->max_width
);
3277 return ERR_PTR(-EINVAL
);
3279 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3280 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3281 r
->height
, config
->min_height
, config
->max_height
);
3282 return ERR_PTR(-EINVAL
);
3285 ret
= framebuffer_check(r
);
3287 return ERR_PTR(ret
);
3289 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3291 DRM_DEBUG_KMS("could not create framebuffer\n");
3299 * drm_mode_addfb2 - add an FB to the graphics configuration
3300 * @dev: drm device for the ioctl
3301 * @data: data pointer for the ioctl
3302 * @file_priv: drm file for the ioctl call
3304 * Add a new FB to the specified CRTC, given a user request with format. This is
3305 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3306 * and uses fourcc codes as pixel format specifiers.
3308 * Called by the user via ioctl.
3311 * Zero on success, negative errno on failure.
3313 int drm_mode_addfb2(struct drm_device
*dev
,
3314 void *data
, struct drm_file
*file_priv
)
3316 struct drm_mode_fb_cmd2
*r
= data
;
3317 struct drm_framebuffer
*fb
;
3319 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3322 fb
= internal_framebuffer_create(dev
, r
, file_priv
);
3326 /* Transfer ownership to the filp for reaping on close */
3328 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3329 mutex_lock(&file_priv
->fbs_lock
);
3330 r
->fb_id
= fb
->base
.id
;
3331 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3332 mutex_unlock(&file_priv
->fbs_lock
);
3338 * drm_mode_rmfb - remove an FB from the configuration
3339 * @dev: drm device for the ioctl
3340 * @data: data pointer for the ioctl
3341 * @file_priv: drm file for the ioctl call
3343 * Remove the FB specified by the user.
3345 * Called by the user via ioctl.
3348 * Zero on success, negative errno on failure.
3350 int drm_mode_rmfb(struct drm_device
*dev
,
3351 void *data
, struct drm_file
*file_priv
)
3353 struct drm_framebuffer
*fb
= NULL
;
3354 struct drm_framebuffer
*fbl
= NULL
;
3355 uint32_t *id
= data
;
3358 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3361 mutex_lock(&file_priv
->fbs_lock
);
3362 mutex_lock(&dev
->mode_config
.fb_lock
);
3363 fb
= __drm_framebuffer_lookup(dev
, *id
);
3367 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3373 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3374 __drm_framebuffer_unregister(dev
, fb
);
3376 list_del_init(&fb
->filp_head
);
3377 mutex_unlock(&dev
->mode_config
.fb_lock
);
3378 mutex_unlock(&file_priv
->fbs_lock
);
3380 drm_framebuffer_remove(fb
);
3385 mutex_unlock(&dev
->mode_config
.fb_lock
);
3386 mutex_unlock(&file_priv
->fbs_lock
);
3392 * drm_mode_getfb - get FB info
3393 * @dev: drm device for the ioctl
3394 * @data: data pointer for the ioctl
3395 * @file_priv: drm file for the ioctl call
3397 * Lookup the FB given its ID and return info about it.
3399 * Called by the user via ioctl.
3402 * Zero on success, negative errno on failure.
3404 int drm_mode_getfb(struct drm_device
*dev
,
3405 void *data
, struct drm_file
*file_priv
)
3407 struct drm_mode_fb_cmd
*r
= data
;
3408 struct drm_framebuffer
*fb
;
3411 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3414 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3418 r
->height
= fb
->height
;
3419 r
->width
= fb
->width
;
3420 r
->depth
= fb
->depth
;
3421 r
->bpp
= fb
->bits_per_pixel
;
3422 r
->pitch
= fb
->pitches
[0];
3423 if (fb
->funcs
->create_handle
) {
3424 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3425 drm_is_control_client(file_priv
)) {
3426 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3429 /* GET_FB() is an unprivileged ioctl so we must not
3430 * return a buffer-handle to non-master processes! For
3431 * backwards-compatibility reasons, we cannot make
3432 * GET_FB() privileged, so just return an invalid handle
3433 * for non-masters. */
3441 drm_framebuffer_unreference(fb
);
3447 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3448 * @dev: drm device for the ioctl
3449 * @data: data pointer for the ioctl
3450 * @file_priv: drm file for the ioctl call
3452 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3453 * rectangle list. Generic userspace which does frontbuffer rendering must call
3454 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3455 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3457 * Modesetting drivers which always update the frontbuffer do not need to
3458 * implement the corresponding ->dirty framebuffer callback.
3460 * Called by the user via ioctl.
3463 * Zero on success, negative errno on failure.
3465 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3466 void *data
, struct drm_file
*file_priv
)
3468 struct drm_clip_rect __user
*clips_ptr
;
3469 struct drm_clip_rect
*clips
= NULL
;
3470 struct drm_mode_fb_dirty_cmd
*r
= data
;
3471 struct drm_framebuffer
*fb
;
3476 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3479 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3483 num_clips
= r
->num_clips
;
3484 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3486 if (!num_clips
!= !clips_ptr
) {
3491 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3493 /* If userspace annotates copy, clips must come in pairs */
3494 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3499 if (num_clips
&& clips_ptr
) {
3500 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3504 clips
= kcalloc(num_clips
, sizeof(*clips
), GFP_KERNEL
);
3510 ret
= copy_from_user(clips
, clips_ptr
,
3511 num_clips
* sizeof(*clips
));
3518 if (fb
->funcs
->dirty
) {
3519 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3528 drm_framebuffer_unreference(fb
);
3535 * drm_fb_release - remove and free the FBs on this file
3536 * @priv: drm file for the ioctl
3538 * Destroy all the FBs associated with @filp.
3540 * Called by the user via ioctl.
3543 * Zero on success, negative errno on failure.
3545 void drm_fb_release(struct drm_file
*priv
)
3547 struct drm_device
*dev
= priv
->minor
->dev
;
3548 struct drm_framebuffer
*fb
, *tfb
;
3551 * When the file gets released that means no one else can access the fb
3552 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3553 * avoid upsetting lockdep since the universal cursor code adds a
3554 * framebuffer while holding mutex locks.
3556 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3557 * locks is impossible here since no one else but this function can get
3560 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3562 mutex_lock(&dev
->mode_config
.fb_lock
);
3563 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3564 __drm_framebuffer_unregister(dev
, fb
);
3565 mutex_unlock(&dev
->mode_config
.fb_lock
);
3567 list_del_init(&fb
->filp_head
);
3569 /* This will also drop the fpriv->fbs reference. */
3570 drm_framebuffer_remove(fb
);
3575 * drm_property_create - create a new property type
3577 * @flags: flags specifying the property type
3578 * @name: name of the property
3579 * @num_values: number of pre-defined values
3581 * This creates a new generic drm property which can then be attached to a drm
3582 * object with drm_object_attach_property. The returned property object must be
3583 * freed with drm_property_destroy.
3585 * Note that the DRM core keeps a per-device list of properties and that, if
3586 * drm_mode_config_cleanup() is called, it will destroy all properties created
3590 * A pointer to the newly created property on success, NULL on failure.
3592 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3593 const char *name
, int num_values
)
3595 struct drm_property
*property
= NULL
;
3598 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3602 property
->dev
= dev
;
3605 property
->values
= kcalloc(num_values
, sizeof(uint64_t),
3607 if (!property
->values
)
3611 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3615 property
->flags
= flags
;
3616 property
->num_values
= num_values
;
3617 INIT_LIST_HEAD(&property
->enum_list
);
3620 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3621 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3624 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3626 WARN_ON(!drm_property_type_valid(property
));
3630 kfree(property
->values
);
3634 EXPORT_SYMBOL(drm_property_create
);
3637 * drm_property_create_enum - create a new enumeration property type
3639 * @flags: flags specifying the property type
3640 * @name: name of the property
3641 * @props: enumeration lists with property values
3642 * @num_values: number of pre-defined values
3644 * This creates a new generic drm property which can then be attached to a drm
3645 * object with drm_object_attach_property. The returned property object must be
3646 * freed with drm_property_destroy.
3648 * Userspace is only allowed to set one of the predefined values for enumeration
3652 * A pointer to the newly created property on success, NULL on failure.
3654 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3656 const struct drm_prop_enum_list
*props
,
3659 struct drm_property
*property
;
3662 flags
|= DRM_MODE_PROP_ENUM
;
3664 property
= drm_property_create(dev
, flags
, name
, num_values
);
3668 for (i
= 0; i
< num_values
; i
++) {
3669 ret
= drm_property_add_enum(property
, i
,
3673 drm_property_destroy(dev
, property
);
3680 EXPORT_SYMBOL(drm_property_create_enum
);
3683 * drm_property_create_bitmask - create a new bitmask property type
3685 * @flags: flags specifying the property type
3686 * @name: name of the property
3687 * @props: enumeration lists with property bitflags
3688 * @num_props: size of the @props array
3689 * @supported_bits: bitmask of all supported enumeration values
3691 * This creates a new bitmask drm property which can then be attached to a drm
3692 * object with drm_object_attach_property. The returned property object must be
3693 * freed with drm_property_destroy.
3695 * Compared to plain enumeration properties userspace is allowed to set any
3696 * or'ed together combination of the predefined property bitflag values
3699 * A pointer to the newly created property on success, NULL on failure.
3701 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3702 int flags
, const char *name
,
3703 const struct drm_prop_enum_list
*props
,
3705 uint64_t supported_bits
)
3707 struct drm_property
*property
;
3708 int i
, ret
, index
= 0;
3709 int num_values
= hweight64(supported_bits
);
3711 flags
|= DRM_MODE_PROP_BITMASK
;
3713 property
= drm_property_create(dev
, flags
, name
, num_values
);
3716 for (i
= 0; i
< num_props
; i
++) {
3717 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3720 if (WARN_ON(index
>= num_values
)) {
3721 drm_property_destroy(dev
, property
);
3725 ret
= drm_property_add_enum(property
, index
++,
3729 drm_property_destroy(dev
, property
);
3736 EXPORT_SYMBOL(drm_property_create_bitmask
);
3738 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3739 int flags
, const char *name
,
3740 uint64_t min
, uint64_t max
)
3742 struct drm_property
*property
;
3744 property
= drm_property_create(dev
, flags
, name
, 2);
3748 property
->values
[0] = min
;
3749 property
->values
[1] = max
;
3755 * drm_property_create_range - create a new unsigned ranged property type
3757 * @flags: flags specifying the property type
3758 * @name: name of the property
3759 * @min: minimum value of the property
3760 * @max: maximum value of the property
3762 * This creates a new generic drm property which can then be attached to a drm
3763 * object with drm_object_attach_property. The returned property object must be
3764 * freed with drm_property_destroy.
3766 * Userspace is allowed to set any unsigned integer value in the (min, max)
3770 * A pointer to the newly created property on success, NULL on failure.
3772 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3774 uint64_t min
, uint64_t max
)
3776 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3779 EXPORT_SYMBOL(drm_property_create_range
);
3782 * drm_property_create_signed_range - create a new signed ranged property type
3784 * @flags: flags specifying the property type
3785 * @name: name of the property
3786 * @min: minimum value of the property
3787 * @max: maximum value of the property
3789 * This creates a new generic drm property which can then be attached to a drm
3790 * object with drm_object_attach_property. The returned property object must be
3791 * freed with drm_property_destroy.
3793 * Userspace is allowed to set any signed integer value in the (min, max)
3797 * A pointer to the newly created property on success, NULL on failure.
3799 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3800 int flags
, const char *name
,
3801 int64_t min
, int64_t max
)
3803 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3804 name
, I642U64(min
), I642U64(max
));
3806 EXPORT_SYMBOL(drm_property_create_signed_range
);
3809 * drm_property_create_object - create a new object property type
3811 * @flags: flags specifying the property type
3812 * @name: name of the property
3813 * @type: object type from DRM_MODE_OBJECT_* defines
3815 * This creates a new generic drm property which can then be attached to a drm
3816 * object with drm_object_attach_property. The returned property object must be
3817 * freed with drm_property_destroy.
3819 * Userspace is only allowed to set this to any property value of the given
3820 * @type. Only useful for atomic properties, which is enforced.
3823 * A pointer to the newly created property on success, NULL on failure.
3825 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3826 int flags
, const char *name
, uint32_t type
)
3828 struct drm_property
*property
;
3830 flags
|= DRM_MODE_PROP_OBJECT
;
3832 if (WARN_ON(!(flags
& DRM_MODE_PROP_ATOMIC
)))
3835 property
= drm_property_create(dev
, flags
, name
, 1);
3839 property
->values
[0] = type
;
3843 EXPORT_SYMBOL(drm_property_create_object
);
3846 * drm_property_create_bool - create a new boolean property type
3848 * @flags: flags specifying the property type
3849 * @name: name of the property
3851 * This creates a new generic drm property which can then be attached to a drm
3852 * object with drm_object_attach_property. The returned property object must be
3853 * freed with drm_property_destroy.
3855 * This is implemented as a ranged property with only {0, 1} as valid values.
3858 * A pointer to the newly created property on success, NULL on failure.
3860 struct drm_property
*drm_property_create_bool(struct drm_device
*dev
, int flags
,
3863 return drm_property_create_range(dev
, flags
, name
, 0, 1);
3865 EXPORT_SYMBOL(drm_property_create_bool
);
3868 * drm_property_add_enum - add a possible value to an enumeration property
3869 * @property: enumeration property to change
3870 * @index: index of the new enumeration
3871 * @value: value of the new enumeration
3872 * @name: symbolic name of the new enumeration
3874 * This functions adds enumerations to a property.
3876 * It's use is deprecated, drivers should use one of the more specific helpers
3877 * to directly create the property with all enumerations already attached.
3880 * Zero on success, error code on failure.
3882 int drm_property_add_enum(struct drm_property
*property
, int index
,
3883 uint64_t value
, const char *name
)
3885 struct drm_property_enum
*prop_enum
;
3887 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3888 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3892 * Bitmask enum properties have the additional constraint of values
3895 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3899 if (!list_empty(&property
->enum_list
)) {
3900 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3901 if (prop_enum
->value
== value
) {
3902 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3903 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3909 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3913 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3914 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3915 prop_enum
->value
= value
;
3917 property
->values
[index
] = value
;
3918 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
3921 EXPORT_SYMBOL(drm_property_add_enum
);
3924 * drm_property_destroy - destroy a drm property
3926 * @property: property to destry
3928 * This function frees a property including any attached resources like
3929 * enumeration values.
3931 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3933 struct drm_property_enum
*prop_enum
, *pt
;
3935 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
3936 list_del(&prop_enum
->head
);
3940 if (property
->num_values
)
3941 kfree(property
->values
);
3942 drm_mode_object_put(dev
, &property
->base
);
3943 list_del(&property
->head
);
3946 EXPORT_SYMBOL(drm_property_destroy
);
3949 * drm_object_attach_property - attach a property to a modeset object
3950 * @obj: drm modeset object
3951 * @property: property to attach
3952 * @init_val: initial value of the property
3954 * This attaches the given property to the modeset object with the given initial
3955 * value. Currently this function cannot fail since the properties are stored in
3956 * a statically sized array.
3958 void drm_object_attach_property(struct drm_mode_object
*obj
,
3959 struct drm_property
*property
,
3962 int count
= obj
->properties
->count
;
3964 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3965 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3966 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3967 "you see this message on the same object type.\n",
3972 obj
->properties
->properties
[count
] = property
;
3973 obj
->properties
->values
[count
] = init_val
;
3974 obj
->properties
->count
++;
3975 if (property
->flags
& DRM_MODE_PROP_ATOMIC
)
3976 obj
->properties
->atomic_count
++;
3978 EXPORT_SYMBOL(drm_object_attach_property
);
3981 * drm_object_property_set_value - set the value of a property
3982 * @obj: drm mode object to set property value for
3983 * @property: property to set
3984 * @val: value the property should be set to
3986 * This functions sets a given property on a given object. This function only
3987 * changes the software state of the property, it does not call into the
3988 * driver's ->set_property callback.
3991 * Zero on success, error code on failure.
3993 int drm_object_property_set_value(struct drm_mode_object
*obj
,
3994 struct drm_property
*property
, uint64_t val
)
3998 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3999 if (obj
->properties
->properties
[i
] == property
) {
4000 obj
->properties
->values
[i
] = val
;
4007 EXPORT_SYMBOL(drm_object_property_set_value
);
4010 * drm_object_property_get_value - retrieve the value of a property
4011 * @obj: drm mode object to get property value from
4012 * @property: property to retrieve
4013 * @val: storage for the property value
4015 * This function retrieves the softare state of the given property for the given
4016 * property. Since there is no driver callback to retrieve the current property
4017 * value this might be out of sync with the hardware, depending upon the driver
4021 * Zero on success, error code on failure.
4023 int drm_object_property_get_value(struct drm_mode_object
*obj
,
4024 struct drm_property
*property
, uint64_t *val
)
4028 /* read-only properties bypass atomic mechanism and still store
4029 * their value in obj->properties->values[].. mostly to avoid
4030 * having to deal w/ EDID and similar props in atomic paths:
4032 if (drm_core_check_feature(property
->dev
, DRIVER_ATOMIC
) &&
4033 !(property
->flags
& DRM_MODE_PROP_IMMUTABLE
))
4034 return drm_atomic_get_property(obj
, property
, val
);
4036 for (i
= 0; i
< obj
->properties
->count
; i
++) {
4037 if (obj
->properties
->properties
[i
] == property
) {
4038 *val
= obj
->properties
->values
[i
];
4045 EXPORT_SYMBOL(drm_object_property_get_value
);
4048 * drm_mode_getproperty_ioctl - get the property metadata
4051 * @file_priv: DRM file info
4053 * This function retrieves the metadata for a given property, like the different
4054 * possible values for an enum property or the limits for a range property.
4056 * Blob properties are special
4058 * Called by the user via ioctl.
4061 * Zero on success, negative errno on failure.
4063 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
4064 void *data
, struct drm_file
*file_priv
)
4066 struct drm_mode_get_property
*out_resp
= data
;
4067 struct drm_property
*property
;
4069 int value_count
= 0;
4072 struct drm_property_enum
*prop_enum
;
4073 struct drm_mode_property_enum __user
*enum_ptr
;
4074 uint64_t __user
*values_ptr
;
4076 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4079 drm_modeset_lock_all(dev
);
4080 property
= drm_property_find(dev
, out_resp
->prop_id
);
4086 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4087 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4088 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
4092 value_count
= property
->num_values
;
4094 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
4095 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
4096 out_resp
->flags
= property
->flags
;
4098 if ((out_resp
->count_values
>= value_count
) && value_count
) {
4099 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
4100 for (i
= 0; i
< value_count
; i
++) {
4101 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
4107 out_resp
->count_values
= value_count
;
4109 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
4110 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4111 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
4113 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
4114 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
4116 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
4121 if (copy_to_user(&enum_ptr
[copied
].name
,
4122 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
4129 out_resp
->count_enum_blobs
= enum_count
;
4133 * NOTE: The idea seems to have been to use this to read all the blob
4134 * property values. But nothing ever added them to the corresponding
4135 * list, userspace always used the special-purpose get_blob ioctl to
4136 * read the value for a blob property. It also doesn't make a lot of
4137 * sense to return values here when everything else is just metadata for
4138 * the property itself.
4140 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
4141 out_resp
->count_enum_blobs
= 0;
4143 drm_modeset_unlock_all(dev
);
4147 static struct drm_property_blob
*
4148 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
4151 struct drm_property_blob
*blob
;
4154 if (!length
|| !data
)
4157 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
4161 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
4167 blob
->length
= length
;
4169 memcpy(blob
->data
, data
, length
);
4171 list_add_tail(&blob
->head
, &dev
->mode_config
.property_blob_list
);
4175 static void drm_property_destroy_blob(struct drm_device
*dev
,
4176 struct drm_property_blob
*blob
)
4178 drm_mode_object_put(dev
, &blob
->base
);
4179 list_del(&blob
->head
);
4184 * drm_mode_getblob_ioctl - get the contents of a blob property value
4187 * @file_priv: DRM file info
4189 * This function retrieves the contents of a blob property. The value stored in
4190 * an object's blob property is just a normal modeset object id.
4192 * Called by the user via ioctl.
4195 * Zero on success, negative errno on failure.
4197 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
4198 void *data
, struct drm_file
*file_priv
)
4200 struct drm_mode_get_blob
*out_resp
= data
;
4201 struct drm_property_blob
*blob
;
4203 void __user
*blob_ptr
;
4205 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4208 drm_modeset_lock_all(dev
);
4209 blob
= drm_property_blob_find(dev
, out_resp
->blob_id
);
4215 if (out_resp
->length
== blob
->length
) {
4216 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4217 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)) {
4222 out_resp
->length
= blob
->length
;
4225 drm_modeset_unlock_all(dev
);
4230 * drm_mode_connector_set_path_property - set tile property on connector
4231 * @connector: connector to set property on.
4232 * @path: path to use for property.
4234 * This creates a property to expose to userspace to specify a
4235 * connector path. This is mainly used for DisplayPort MST where
4236 * connectors have a topology and we want to allow userspace to give
4237 * them more meaningful names.
4240 * Zero on success, negative errno on failure.
4242 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4245 struct drm_device
*dev
= connector
->dev
;
4246 size_t size
= strlen(path
) + 1;
4249 connector
->path_blob_ptr
= drm_property_create_blob(connector
->dev
,
4251 if (!connector
->path_blob_ptr
)
4254 ret
= drm_object_property_set_value(&connector
->base
,
4255 dev
->mode_config
.path_property
,
4256 connector
->path_blob_ptr
->base
.id
);
4259 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4262 * drm_mode_connector_set_tile_property - set tile property on connector
4263 * @connector: connector to set property on.
4265 * This looks up the tile information for a connector, and creates a
4266 * property for userspace to parse if it exists. The property is of
4267 * the form of 8 integers using ':' as a separator.
4270 * Zero on success, errno on failure.
4272 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
)
4274 struct drm_device
*dev
= connector
->dev
;
4278 if (connector
->tile_blob_ptr
)
4279 drm_property_destroy_blob(dev
, connector
->tile_blob_ptr
);
4281 if (!connector
->has_tile
) {
4282 connector
->tile_blob_ptr
= NULL
;
4283 ret
= drm_object_property_set_value(&connector
->base
,
4284 dev
->mode_config
.tile_property
, 0);
4288 snprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4289 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
4290 connector
->num_h_tile
, connector
->num_v_tile
,
4291 connector
->tile_h_loc
, connector
->tile_v_loc
,
4292 connector
->tile_h_size
, connector
->tile_v_size
);
4293 size
= strlen(tile
) + 1;
4295 connector
->tile_blob_ptr
= drm_property_create_blob(connector
->dev
,
4297 if (!connector
->tile_blob_ptr
)
4300 ret
= drm_object_property_set_value(&connector
->base
,
4301 dev
->mode_config
.tile_property
,
4302 connector
->tile_blob_ptr
->base
.id
);
4305 EXPORT_SYMBOL(drm_mode_connector_set_tile_property
);
4308 * drm_mode_connector_update_edid_property - update the edid property of a connector
4309 * @connector: drm connector
4310 * @edid: new value of the edid property
4312 * This function creates a new blob modeset object and assigns its id to the
4313 * connector's edid property.
4316 * Zero on success, negative errno on failure.
4318 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4319 const struct edid
*edid
)
4321 struct drm_device
*dev
= connector
->dev
;
4325 /* ignore requests to set edid when overridden */
4326 if (connector
->override_edid
)
4329 if (connector
->edid_blob_ptr
)
4330 drm_property_destroy_blob(dev
, connector
->edid_blob_ptr
);
4332 /* Delete edid, when there is none. */
4334 connector
->edid_blob_ptr
= NULL
;
4335 ret
= drm_object_property_set_value(&connector
->base
, dev
->mode_config
.edid_property
, 0);
4339 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4340 connector
->edid_blob_ptr
= drm_property_create_blob(connector
->dev
,
4342 if (!connector
->edid_blob_ptr
)
4345 ret
= drm_object_property_set_value(&connector
->base
,
4346 dev
->mode_config
.edid_property
,
4347 connector
->edid_blob_ptr
->base
.id
);
4351 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4353 /* Some properties could refer to dynamic refcnt'd objects, or things that
4354 * need special locking to handle lifetime issues (ie. to ensure the prop
4355 * value doesn't become invalid part way through the property update due to
4356 * race). The value returned by reference via 'obj' should be passed back
4357 * to drm_property_change_valid_put() after the property is set (and the
4358 * object to which the property is attached has a chance to take it's own
4361 bool drm_property_change_valid_get(struct drm_property
*property
,
4362 uint64_t value
, struct drm_mode_object
**ref
)
4366 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4371 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4372 if (value
< property
->values
[0] || value
> property
->values
[1])
4375 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4376 int64_t svalue
= U642I64(value
);
4378 if (svalue
< U642I64(property
->values
[0]) ||
4379 svalue
> U642I64(property
->values
[1]))
4382 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4383 uint64_t valid_mask
= 0;
4385 for (i
= 0; i
< property
->num_values
; i
++)
4386 valid_mask
|= (1ULL << property
->values
[i
]);
4387 return !(value
& ~valid_mask
);
4388 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4389 /* Only the driver knows */
4391 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4392 /* a zero value for an object property translates to null: */
4396 /* handle refcnt'd objects specially: */
4397 if (property
->values
[0] == DRM_MODE_OBJECT_FB
) {
4398 struct drm_framebuffer
*fb
;
4399 fb
= drm_framebuffer_lookup(property
->dev
, value
);
4407 return _object_find(property
->dev
, value
, property
->values
[0]) != NULL
;
4411 for (i
= 0; i
< property
->num_values
; i
++)
4412 if (property
->values
[i
] == value
)
4417 void drm_property_change_valid_put(struct drm_property
*property
,
4418 struct drm_mode_object
*ref
)
4423 if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4424 if (property
->values
[0] == DRM_MODE_OBJECT_FB
)
4425 drm_framebuffer_unreference(obj_to_fb(ref
));
4430 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4433 * @file_priv: DRM file info
4435 * This function sets the current value for a connectors's property. It also
4436 * calls into a driver's ->set_property callback to update the hardware state
4438 * Called by the user via ioctl.
4441 * Zero on success, negative errno on failure.
4443 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4444 void *data
, struct drm_file
*file_priv
)
4446 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4447 struct drm_mode_obj_set_property obj_set_prop
= {
4448 .value
= conn_set_prop
->value
,
4449 .prop_id
= conn_set_prop
->prop_id
,
4450 .obj_id
= conn_set_prop
->connector_id
,
4451 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4454 /* It does all the locking and checking we need */
4455 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4458 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4459 struct drm_property
*property
,
4463 struct drm_connector
*connector
= obj_to_connector(obj
);
4465 /* Do DPMS ourselves */
4466 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4467 if (connector
->funcs
->dpms
)
4468 (*connector
->funcs
->dpms
)(connector
, (int)value
);
4470 } else if (connector
->funcs
->set_property
)
4471 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4473 /* store the property value if successful */
4475 drm_object_property_set_value(&connector
->base
, property
, value
);
4479 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4480 struct drm_property
*property
,
4484 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4486 if (crtc
->funcs
->set_property
)
4487 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4489 drm_object_property_set_value(obj
, property
, value
);
4495 * drm_mode_plane_set_obj_prop - set the value of a property
4496 * @plane: drm plane object to set property value for
4497 * @property: property to set
4498 * @value: value the property should be set to
4500 * This functions sets a given property on a given plane object. This function
4501 * calls the driver's ->set_property callback and changes the software state of
4502 * the property if the callback succeeds.
4505 * Zero on success, error code on failure.
4507 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4508 struct drm_property
*property
,
4512 struct drm_mode_object
*obj
= &plane
->base
;
4514 if (plane
->funcs
->set_property
)
4515 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4517 drm_object_property_set_value(obj
, property
, value
);
4521 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4524 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4527 * @file_priv: DRM file info
4529 * This function retrieves the current value for an object's property. Compared
4530 * to the connector specific ioctl this one is extended to also work on crtc and
4533 * Called by the user via ioctl.
4536 * Zero on success, negative errno on failure.
4538 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4539 struct drm_file
*file_priv
)
4541 struct drm_mode_obj_get_properties
*arg
= data
;
4542 struct drm_mode_object
*obj
;
4545 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4548 drm_modeset_lock_all(dev
);
4550 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4555 if (!obj
->properties
) {
4560 ret
= get_properties(obj
, file_priv
->atomic
,
4561 (uint32_t __user
*)(unsigned long)(arg
->props_ptr
),
4562 (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
),
4566 drm_modeset_unlock_all(dev
);
4571 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4574 * @file_priv: DRM file info
4576 * This function sets the current value for an object's property. It also calls
4577 * into a driver's ->set_property callback to update the hardware state.
4578 * Compared to the connector specific ioctl this one is extended to also work on
4579 * crtc and plane objects.
4581 * Called by the user via ioctl.
4584 * Zero on success, negative errno on failure.
4586 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4587 struct drm_file
*file_priv
)
4589 struct drm_mode_obj_set_property
*arg
= data
;
4590 struct drm_mode_object
*arg_obj
;
4591 struct drm_mode_object
*prop_obj
;
4592 struct drm_property
*property
;
4593 int i
, ret
= -EINVAL
;
4594 struct drm_mode_object
*ref
;
4596 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4599 drm_modeset_lock_all(dev
);
4601 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4606 if (!arg_obj
->properties
)
4609 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4610 if (arg_obj
->properties
->properties
[i
]->base
.id
== arg
->prop_id
)
4613 if (i
== arg_obj
->properties
->count
)
4616 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
4617 DRM_MODE_OBJECT_PROPERTY
);
4622 property
= obj_to_property(prop_obj
);
4624 if (!drm_property_change_valid_get(property
, arg
->value
, &ref
))
4627 switch (arg_obj
->type
) {
4628 case DRM_MODE_OBJECT_CONNECTOR
:
4629 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
4632 case DRM_MODE_OBJECT_CRTC
:
4633 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
4635 case DRM_MODE_OBJECT_PLANE
:
4636 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
4637 property
, arg
->value
);
4641 drm_property_change_valid_put(property
, ref
);
4644 drm_modeset_unlock_all(dev
);
4649 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4650 * @connector: connector to attach
4651 * @encoder: encoder to attach @connector to
4653 * This function links up a connector to an encoder. Note that the routing
4654 * restrictions between encoders and crtcs are exposed to userspace through the
4655 * possible_clones and possible_crtcs bitmasks.
4658 * Zero on success, negative errno on failure.
4660 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
4661 struct drm_encoder
*encoder
)
4665 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
4666 if (connector
->encoder_ids
[i
] == 0) {
4667 connector
->encoder_ids
[i
] = encoder
->base
.id
;
4673 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
4676 * drm_mode_crtc_set_gamma_size - set the gamma table size
4677 * @crtc: CRTC to set the gamma table size for
4678 * @gamma_size: size of the gamma table
4680 * Drivers which support gamma tables should set this to the supported gamma
4681 * table size when initializing the CRTC. Currently the drm core only supports a
4682 * fixed gamma table size.
4685 * Zero on success, negative errno on failure.
4687 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
4690 crtc
->gamma_size
= gamma_size
;
4692 crtc
->gamma_store
= kcalloc(gamma_size
, sizeof(uint16_t) * 3,
4694 if (!crtc
->gamma_store
) {
4695 crtc
->gamma_size
= 0;
4701 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
4704 * drm_mode_gamma_set_ioctl - set the gamma table
4707 * @file_priv: DRM file info
4709 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4710 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4712 * Called by the user via ioctl.
4715 * Zero on success, negative errno on failure.
4717 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
4718 void *data
, struct drm_file
*file_priv
)
4720 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4721 struct drm_crtc
*crtc
;
4722 void *r_base
, *g_base
, *b_base
;
4726 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4729 drm_modeset_lock_all(dev
);
4730 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4736 if (crtc
->funcs
->gamma_set
== NULL
) {
4741 /* memcpy into gamma store */
4742 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4747 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4748 r_base
= crtc
->gamma_store
;
4749 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
4754 g_base
= r_base
+ size
;
4755 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
4760 b_base
= g_base
+ size
;
4761 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
4766 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
4769 drm_modeset_unlock_all(dev
);
4775 * drm_mode_gamma_get_ioctl - get the gamma table
4778 * @file_priv: DRM file info
4780 * Copy the current gamma table into the storage provided. This also provides
4781 * the gamma table size the driver expects, which can be used to size the
4782 * allocated storage.
4784 * Called by the user via ioctl.
4787 * Zero on success, negative errno on failure.
4789 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
4790 void *data
, struct drm_file
*file_priv
)
4792 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4793 struct drm_crtc
*crtc
;
4794 void *r_base
, *g_base
, *b_base
;
4798 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4801 drm_modeset_lock_all(dev
);
4802 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4808 /* memcpy into gamma store */
4809 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4814 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4815 r_base
= crtc
->gamma_store
;
4816 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
4821 g_base
= r_base
+ size
;
4822 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
4827 b_base
= g_base
+ size
;
4828 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
4833 drm_modeset_unlock_all(dev
);
4838 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4841 * @file_priv: DRM file info
4843 * This schedules an asynchronous update on a given CRTC, called page flip.
4844 * Optionally a drm event is generated to signal the completion of the event.
4845 * Generic drivers cannot assume that a pageflip with changed framebuffer
4846 * properties (including driver specific metadata like tiling layout) will work,
4847 * but some drivers support e.g. pixel format changes through the pageflip
4850 * Called by the user via ioctl.
4853 * Zero on success, negative errno on failure.
4855 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
4856 void *data
, struct drm_file
*file_priv
)
4858 struct drm_mode_crtc_page_flip
*page_flip
= data
;
4859 struct drm_crtc
*crtc
;
4860 struct drm_framebuffer
*fb
= NULL
;
4861 struct drm_pending_vblank_event
*e
= NULL
;
4862 unsigned long flags
;
4865 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
4866 page_flip
->reserved
!= 0)
4869 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
4872 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
4876 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
4877 if (crtc
->primary
->fb
== NULL
) {
4878 /* The framebuffer is currently unbound, presumably
4879 * due to a hotplug event, that userspace has not
4886 if (crtc
->funcs
->page_flip
== NULL
)
4889 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
4895 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
4899 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
4900 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4905 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4907 spin_lock_irqsave(&dev
->event_lock
, flags
);
4908 if (file_priv
->event_space
< sizeof(e
->event
)) {
4909 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4912 file_priv
->event_space
-= sizeof(e
->event
);
4913 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4915 e
= kzalloc(sizeof(*e
), GFP_KERNEL
);
4917 spin_lock_irqsave(&dev
->event_lock
, flags
);
4918 file_priv
->event_space
+= sizeof(e
->event
);
4919 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4923 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
4924 e
->event
.base
.length
= sizeof(e
->event
);
4925 e
->event
.user_data
= page_flip
->user_data
;
4926 e
->base
.event
= &e
->event
.base
;
4927 e
->base
.file_priv
= file_priv
;
4929 (void (*) (struct drm_pending_event
*)) kfree
;
4932 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
4933 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
4935 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4936 spin_lock_irqsave(&dev
->event_lock
, flags
);
4937 file_priv
->event_space
+= sizeof(e
->event
);
4938 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4941 /* Keep the old fb, don't unref it. */
4942 crtc
->primary
->old_fb
= NULL
;
4945 * Warn if the driver hasn't properly updated the crtc->fb
4946 * field to reflect that the new framebuffer is now used.
4947 * Failing to do so will screw with the reference counting
4950 WARN_ON(crtc
->primary
->fb
!= fb
);
4951 /* Unref only the old framebuffer. */
4957 drm_framebuffer_unreference(fb
);
4958 if (crtc
->primary
->old_fb
)
4959 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
4960 crtc
->primary
->old_fb
= NULL
;
4961 drm_modeset_unlock_crtc(crtc
);
4967 * drm_mode_config_reset - call ->reset callbacks
4970 * This functions calls all the crtc's, encoder's and connector's ->reset
4971 * callback. Drivers can use this in e.g. their driver load or resume code to
4972 * reset hardware and software state.
4974 void drm_mode_config_reset(struct drm_device
*dev
)
4976 struct drm_crtc
*crtc
;
4977 struct drm_plane
*plane
;
4978 struct drm_encoder
*encoder
;
4979 struct drm_connector
*connector
;
4981 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
)
4982 if (plane
->funcs
->reset
)
4983 plane
->funcs
->reset(plane
);
4985 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
4986 if (crtc
->funcs
->reset
)
4987 crtc
->funcs
->reset(crtc
);
4989 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
4990 if (encoder
->funcs
->reset
)
4991 encoder
->funcs
->reset(encoder
);
4993 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
4994 connector
->status
= connector_status_unknown
;
4996 if (connector
->funcs
->reset
)
4997 connector
->funcs
->reset(connector
);
5000 EXPORT_SYMBOL(drm_mode_config_reset
);
5003 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5006 * @file_priv: DRM file info
5008 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5009 * TTM or something else entirely) and returns the resulting buffer handle. This
5010 * handle can then be wrapped up into a framebuffer modeset object.
5012 * Note that userspace is not allowed to use such objects for render
5013 * acceleration - drivers must create their own private ioctls for such a use
5016 * Called by the user via ioctl.
5019 * Zero on success, negative errno on failure.
5021 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
5022 void *data
, struct drm_file
*file_priv
)
5024 struct drm_mode_create_dumb
*args
= data
;
5025 u32 cpp
, stride
, size
;
5027 if (!dev
->driver
->dumb_create
)
5029 if (!args
->width
|| !args
->height
|| !args
->bpp
)
5032 /* overflow checks for 32bit size calculations */
5033 /* NOTE: DIV_ROUND_UP() can overflow */
5034 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
5035 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
5037 stride
= cpp
* args
->width
;
5038 if (args
->height
> 0xffffffffU
/ stride
)
5041 /* test for wrap-around */
5042 size
= args
->height
* stride
;
5043 if (PAGE_ALIGN(size
) == 0)
5047 * handle, pitch and size are output parameters. Zero them out to
5048 * prevent drivers from accidentally using uninitialized data. Since
5049 * not all existing userspace is clearing these fields properly we
5050 * cannot reject IOCTL with garbage in them.
5056 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
5060 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5063 * @file_priv: DRM file info
5065 * Allocate an offset in the drm device node's address space to be able to
5066 * memory map a dumb buffer.
5068 * Called by the user via ioctl.
5071 * Zero on success, negative errno on failure.
5073 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
5074 void *data
, struct drm_file
*file_priv
)
5076 struct drm_mode_map_dumb
*args
= data
;
5078 /* call driver ioctl to get mmap offset */
5079 if (!dev
->driver
->dumb_map_offset
)
5082 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
5086 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5089 * @file_priv: DRM file info
5091 * This destroys the userspace handle for the given dumb backing storage buffer.
5092 * Since buffer objects must be reference counted in the kernel a buffer object
5093 * won't be immediately freed if a framebuffer modeset object still uses it.
5095 * Called by the user via ioctl.
5098 * Zero on success, negative errno on failure.
5100 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
5101 void *data
, struct drm_file
*file_priv
)
5103 struct drm_mode_destroy_dumb
*args
= data
;
5105 if (!dev
->driver
->dumb_destroy
)
5108 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
5112 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5113 * @format: pixel format (DRM_FORMAT_*)
5114 * @depth: storage for the depth value
5115 * @bpp: storage for the bpp value
5117 * This only supports RGB formats here for compat with code that doesn't use
5118 * pixel formats directly yet.
5120 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
5125 case DRM_FORMAT_RGB332
:
5126 case DRM_FORMAT_BGR233
:
5130 case DRM_FORMAT_XRGB1555
:
5131 case DRM_FORMAT_XBGR1555
:
5132 case DRM_FORMAT_RGBX5551
:
5133 case DRM_FORMAT_BGRX5551
:
5134 case DRM_FORMAT_ARGB1555
:
5135 case DRM_FORMAT_ABGR1555
:
5136 case DRM_FORMAT_RGBA5551
:
5137 case DRM_FORMAT_BGRA5551
:
5141 case DRM_FORMAT_RGB565
:
5142 case DRM_FORMAT_BGR565
:
5146 case DRM_FORMAT_RGB888
:
5147 case DRM_FORMAT_BGR888
:
5151 case DRM_FORMAT_XRGB8888
:
5152 case DRM_FORMAT_XBGR8888
:
5153 case DRM_FORMAT_RGBX8888
:
5154 case DRM_FORMAT_BGRX8888
:
5158 case DRM_FORMAT_XRGB2101010
:
5159 case DRM_FORMAT_XBGR2101010
:
5160 case DRM_FORMAT_RGBX1010102
:
5161 case DRM_FORMAT_BGRX1010102
:
5162 case DRM_FORMAT_ARGB2101010
:
5163 case DRM_FORMAT_ABGR2101010
:
5164 case DRM_FORMAT_RGBA1010102
:
5165 case DRM_FORMAT_BGRA1010102
:
5169 case DRM_FORMAT_ARGB8888
:
5170 case DRM_FORMAT_ABGR8888
:
5171 case DRM_FORMAT_RGBA8888
:
5172 case DRM_FORMAT_BGRA8888
:
5177 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5178 drm_get_format_name(format
));
5184 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
5187 * drm_format_num_planes - get the number of planes for format
5188 * @format: pixel format (DRM_FORMAT_*)
5191 * The number of planes used by the specified pixel format.
5193 int drm_format_num_planes(uint32_t format
)
5196 case DRM_FORMAT_YUV410
:
5197 case DRM_FORMAT_YVU410
:
5198 case DRM_FORMAT_YUV411
:
5199 case DRM_FORMAT_YVU411
:
5200 case DRM_FORMAT_YUV420
:
5201 case DRM_FORMAT_YVU420
:
5202 case DRM_FORMAT_YUV422
:
5203 case DRM_FORMAT_YVU422
:
5204 case DRM_FORMAT_YUV444
:
5205 case DRM_FORMAT_YVU444
:
5207 case DRM_FORMAT_NV12
:
5208 case DRM_FORMAT_NV21
:
5209 case DRM_FORMAT_NV16
:
5210 case DRM_FORMAT_NV61
:
5211 case DRM_FORMAT_NV24
:
5212 case DRM_FORMAT_NV42
:
5218 EXPORT_SYMBOL(drm_format_num_planes
);
5221 * drm_format_plane_cpp - determine the bytes per pixel value
5222 * @format: pixel format (DRM_FORMAT_*)
5223 * @plane: plane index
5226 * The bytes per pixel value for the specified plane.
5228 int drm_format_plane_cpp(uint32_t format
, int plane
)
5233 if (plane
>= drm_format_num_planes(format
))
5237 case DRM_FORMAT_YUYV
:
5238 case DRM_FORMAT_YVYU
:
5239 case DRM_FORMAT_UYVY
:
5240 case DRM_FORMAT_VYUY
:
5242 case DRM_FORMAT_NV12
:
5243 case DRM_FORMAT_NV21
:
5244 case DRM_FORMAT_NV16
:
5245 case DRM_FORMAT_NV61
:
5246 case DRM_FORMAT_NV24
:
5247 case DRM_FORMAT_NV42
:
5248 return plane
? 2 : 1;
5249 case DRM_FORMAT_YUV410
:
5250 case DRM_FORMAT_YVU410
:
5251 case DRM_FORMAT_YUV411
:
5252 case DRM_FORMAT_YVU411
:
5253 case DRM_FORMAT_YUV420
:
5254 case DRM_FORMAT_YVU420
:
5255 case DRM_FORMAT_YUV422
:
5256 case DRM_FORMAT_YVU422
:
5257 case DRM_FORMAT_YUV444
:
5258 case DRM_FORMAT_YVU444
:
5261 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
5265 EXPORT_SYMBOL(drm_format_plane_cpp
);
5268 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5269 * @format: pixel format (DRM_FORMAT_*)
5272 * The horizontal chroma subsampling factor for the
5273 * specified pixel format.
5275 int drm_format_horz_chroma_subsampling(uint32_t format
)
5278 case DRM_FORMAT_YUV411
:
5279 case DRM_FORMAT_YVU411
:
5280 case DRM_FORMAT_YUV410
:
5281 case DRM_FORMAT_YVU410
:
5283 case DRM_FORMAT_YUYV
:
5284 case DRM_FORMAT_YVYU
:
5285 case DRM_FORMAT_UYVY
:
5286 case DRM_FORMAT_VYUY
:
5287 case DRM_FORMAT_NV12
:
5288 case DRM_FORMAT_NV21
:
5289 case DRM_FORMAT_NV16
:
5290 case DRM_FORMAT_NV61
:
5291 case DRM_FORMAT_YUV422
:
5292 case DRM_FORMAT_YVU422
:
5293 case DRM_FORMAT_YUV420
:
5294 case DRM_FORMAT_YVU420
:
5300 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5303 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5304 * @format: pixel format (DRM_FORMAT_*)
5307 * The vertical chroma subsampling factor for the
5308 * specified pixel format.
5310 int drm_format_vert_chroma_subsampling(uint32_t format
)
5313 case DRM_FORMAT_YUV410
:
5314 case DRM_FORMAT_YVU410
:
5316 case DRM_FORMAT_YUV420
:
5317 case DRM_FORMAT_YVU420
:
5318 case DRM_FORMAT_NV12
:
5319 case DRM_FORMAT_NV21
:
5325 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5328 * drm_rotation_simplify() - Try to simplify the rotation
5329 * @rotation: Rotation to be simplified
5330 * @supported_rotations: Supported rotations
5332 * Attempt to simplify the rotation to a form that is supported.
5333 * Eg. if the hardware supports everything except DRM_REFLECT_X
5334 * one could call this function like this:
5336 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5337 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5338 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5340 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5341 * transforms the hardware supports, this function may not
5342 * be able to produce a supported transform, so the caller should
5343 * check the result afterwards.
5345 unsigned int drm_rotation_simplify(unsigned int rotation
,
5346 unsigned int supported_rotations
)
5348 if (rotation
& ~supported_rotations
) {
5349 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5350 rotation
= (rotation
& ~0xf) | BIT((ffs(rotation
& 0xf) + 1) % 4);
5355 EXPORT_SYMBOL(drm_rotation_simplify
);
5358 * drm_mode_config_init - initialize DRM mode_configuration structure
5361 * Initialize @dev's mode_config structure, used for tracking the graphics
5362 * configuration of @dev.
5364 * Since this initializes the modeset locks, no locking is possible. Which is no
5365 * problem, since this should happen single threaded at init time. It is the
5366 * driver's problem to ensure this guarantee.
5369 void drm_mode_config_init(struct drm_device
*dev
)
5371 mutex_init(&dev
->mode_config
.mutex
);
5372 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5373 mutex_init(&dev
->mode_config
.idr_mutex
);
5374 mutex_init(&dev
->mode_config
.fb_lock
);
5375 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5376 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5377 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5378 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5379 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5380 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5381 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5382 idr_init(&dev
->mode_config
.crtc_idr
);
5383 idr_init(&dev
->mode_config
.tile_idr
);
5385 drm_modeset_lock_all(dev
);
5386 drm_mode_create_standard_properties(dev
);
5387 drm_modeset_unlock_all(dev
);
5389 /* Just to be sure */
5390 dev
->mode_config
.num_fb
= 0;
5391 dev
->mode_config
.num_connector
= 0;
5392 dev
->mode_config
.num_crtc
= 0;
5393 dev
->mode_config
.num_encoder
= 0;
5394 dev
->mode_config
.num_overlay_plane
= 0;
5395 dev
->mode_config
.num_total_plane
= 0;
5397 EXPORT_SYMBOL(drm_mode_config_init
);
5400 * drm_mode_config_cleanup - free up DRM mode_config info
5403 * Free up all the connectors and CRTCs associated with this DRM device, then
5404 * free up the framebuffers and associated buffer objects.
5406 * Note that since this /should/ happen single-threaded at driver/device
5407 * teardown time, no locking is required. It's the driver's job to ensure that
5408 * this guarantee actually holds true.
5410 * FIXME: cleanup any dangling user buffer objects too
5412 void drm_mode_config_cleanup(struct drm_device
*dev
)
5414 struct drm_connector
*connector
, *ot
;
5415 struct drm_crtc
*crtc
, *ct
;
5416 struct drm_encoder
*encoder
, *enct
;
5417 struct drm_framebuffer
*fb
, *fbt
;
5418 struct drm_property
*property
, *pt
;
5419 struct drm_property_blob
*blob
, *bt
;
5420 struct drm_plane
*plane
, *plt
;
5422 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5424 encoder
->funcs
->destroy(encoder
);
5427 list_for_each_entry_safe(connector
, ot
,
5428 &dev
->mode_config
.connector_list
, head
) {
5429 connector
->funcs
->destroy(connector
);
5432 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5434 drm_property_destroy(dev
, property
);
5437 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5439 drm_property_destroy_blob(dev
, blob
);
5443 * Single-threaded teardown context, so it's not required to grab the
5444 * fb_lock to protect against concurrent fb_list access. Contrary, it
5445 * would actually deadlock with the drm_framebuffer_cleanup function.
5447 * Also, if there are any framebuffers left, that's a driver leak now,
5448 * so politely WARN about this.
5450 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5451 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5452 drm_framebuffer_remove(fb
);
5455 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5457 plane
->funcs
->destroy(plane
);
5460 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5461 crtc
->funcs
->destroy(crtc
);
5464 idr_destroy(&dev
->mode_config
.tile_idr
);
5465 idr_destroy(&dev
->mode_config
.crtc_idr
);
5466 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5468 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5470 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5471 unsigned int supported_rotations
)
5473 static const struct drm_prop_enum_list props
[] = {
5474 { DRM_ROTATE_0
, "rotate-0" },
5475 { DRM_ROTATE_90
, "rotate-90" },
5476 { DRM_ROTATE_180
, "rotate-180" },
5477 { DRM_ROTATE_270
, "rotate-270" },
5478 { DRM_REFLECT_X
, "reflect-x" },
5479 { DRM_REFLECT_Y
, "reflect-y" },
5482 return drm_property_create_bitmask(dev
, 0, "rotation",
5483 props
, ARRAY_SIZE(props
),
5484 supported_rotations
);
5486 EXPORT_SYMBOL(drm_mode_create_rotation_property
);
5491 * Tile groups are used to represent tiled monitors with a unique
5492 * integer identifier. Tiled monitors using DisplayID v1.3 have
5493 * a unique 8-byte handle, we store this in a tile group, so we
5494 * have a common identifier for all tiles in a monitor group.
5496 static void drm_tile_group_free(struct kref
*kref
)
5498 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
5499 struct drm_device
*dev
= tg
->dev
;
5500 mutex_lock(&dev
->mode_config
.idr_mutex
);
5501 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
5502 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5507 * drm_mode_put_tile_group - drop a reference to a tile group.
5509 * @tg: tile group to drop reference to.
5511 * drop reference to tile group and free if 0.
5513 void drm_mode_put_tile_group(struct drm_device
*dev
,
5514 struct drm_tile_group
*tg
)
5516 kref_put(&tg
->refcount
, drm_tile_group_free
);
5520 * drm_mode_get_tile_group - get a reference to an existing tile group
5522 * @topology: 8-bytes unique per monitor.
5524 * Use the unique bytes to get a reference to an existing tile group.
5527 * tile group or NULL if not found.
5529 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
5532 struct drm_tile_group
*tg
;
5534 mutex_lock(&dev
->mode_config
.idr_mutex
);
5535 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
5536 if (!memcmp(tg
->group_data
, topology
, 8)) {
5537 if (!kref_get_unless_zero(&tg
->refcount
))
5539 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5543 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5548 * drm_mode_create_tile_group - create a tile group from a displayid description
5550 * @topology: 8-bytes unique per monitor.
5552 * Create a tile group for the unique monitor, and get a unique
5553 * identifier for the tile group.
5556 * new tile group or error.
5558 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
5561 struct drm_tile_group
*tg
;
5564 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
5566 return ERR_PTR(-ENOMEM
);
5568 kref_init(&tg
->refcount
);
5569 memcpy(tg
->group_data
, topology
, 8);
5572 mutex_lock(&dev
->mode_config
.idr_mutex
);
5573 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
5581 mutex_unlock(&dev
->mode_config
.idr_mutex
);