2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_fourcc.h>
40 #include <drm/drm_modeset_lock.h>
42 #include "drm_crtc_internal.h"
43 #include "drm_internal.h"
45 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
46 struct drm_mode_fb_cmd2
*r
,
47 struct drm_file
*file_priv
);
49 /* Avoid boilerplate. I'm tired of typing. */
50 #define DRM_ENUM_NAME_FN(fnname, list) \
51 const char *fnname(int val) \
54 for (i = 0; i < ARRAY_SIZE(list); i++) { \
55 if (list[i].type == val) \
56 return list[i].name; \
64 static const struct drm_prop_enum_list drm_dpms_enum_list
[] = {
65 { DRM_MODE_DPMS_ON
, "On" },
66 { DRM_MODE_DPMS_STANDBY
, "Standby" },
67 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
68 { DRM_MODE_DPMS_OFF
, "Off" }
71 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
73 static const struct drm_prop_enum_list drm_plane_type_enum_list
[] = {
74 { DRM_PLANE_TYPE_OVERLAY
, "Overlay" },
75 { DRM_PLANE_TYPE_PRIMARY
, "Primary" },
76 { DRM_PLANE_TYPE_CURSOR
, "Cursor" },
82 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] = {
83 { DRM_MODE_SCALE_NONE
, "None" },
84 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
85 { DRM_MODE_SCALE_CENTER
, "Center" },
86 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
89 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list
[] = {
90 { DRM_MODE_PICTURE_ASPECT_NONE
, "Automatic" },
91 { DRM_MODE_PICTURE_ASPECT_4_3
, "4:3" },
92 { DRM_MODE_PICTURE_ASPECT_16_9
, "16:9" },
96 * Non-global properties, but "required" for certain connectors.
98 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list
[] = {
99 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
100 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
101 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
104 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
106 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] = {
107 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
108 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
109 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
112 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
113 drm_dvi_i_subconnector_enum_list
)
115 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] = {
116 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
117 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
118 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
119 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
123 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
125 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] = {
126 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
127 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
128 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
129 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
133 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
134 drm_tv_subconnector_enum_list
)
136 static const struct drm_prop_enum_list drm_dirty_info_enum_list
[] = {
137 { DRM_MODE_DIRTY_OFF
, "Off" },
138 { DRM_MODE_DIRTY_ON
, "On" },
139 { DRM_MODE_DIRTY_ANNOTATE
, "Annotate" },
142 struct drm_conn_prop_enum_list
{
149 * Connector and encoder types.
151 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] = {
152 { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
153 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
154 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
155 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
156 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
157 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
158 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
159 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
160 { DRM_MODE_CONNECTOR_Component
, "Component" },
161 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
162 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
163 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
164 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
165 { DRM_MODE_CONNECTOR_TV
, "TV" },
166 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
167 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
168 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
171 static const struct drm_prop_enum_list drm_encoder_enum_list
[] = {
172 { DRM_MODE_ENCODER_NONE
, "None" },
173 { DRM_MODE_ENCODER_DAC
, "DAC" },
174 { DRM_MODE_ENCODER_TMDS
, "TMDS" },
175 { DRM_MODE_ENCODER_LVDS
, "LVDS" },
176 { DRM_MODE_ENCODER_TVDAC
, "TV" },
177 { DRM_MODE_ENCODER_VIRTUAL
, "Virtual" },
178 { DRM_MODE_ENCODER_DSI
, "DSI" },
179 { DRM_MODE_ENCODER_DPMST
, "DP MST" },
182 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] = {
183 { SubPixelUnknown
, "Unknown" },
184 { SubPixelHorizontalRGB
, "Horizontal RGB" },
185 { SubPixelHorizontalBGR
, "Horizontal BGR" },
186 { SubPixelVerticalRGB
, "Vertical RGB" },
187 { SubPixelVerticalBGR
, "Vertical BGR" },
188 { SubPixelNone
, "None" },
191 void drm_connector_ida_init(void)
195 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
196 ida_init(&drm_connector_enum_list
[i
].ida
);
199 void drm_connector_ida_destroy(void)
203 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
204 ida_destroy(&drm_connector_enum_list
[i
].ida
);
208 * drm_get_connector_status_name - return a string for connector status
209 * @status: connector status to compute name of
211 * In contrast to the other drm_get_*_name functions this one here returns a
212 * const pointer and hence is threadsafe.
214 const char *drm_get_connector_status_name(enum drm_connector_status status
)
216 if (status
== connector_status_connected
)
218 else if (status
== connector_status_disconnected
)
219 return "disconnected";
223 EXPORT_SYMBOL(drm_get_connector_status_name
);
226 * drm_get_subpixel_order_name - return a string for a given subpixel enum
227 * @order: enum of subpixel_order
229 * Note you could abuse this and return something out of bounds, but that
230 * would be a caller error. No unscrubbed user data should make it here.
232 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
234 return drm_subpixel_enum_list
[order
].name
;
236 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
238 static char printable_char(int c
)
240 return isascii(c
) && isprint(c
) ? c
: '?';
244 * drm_get_format_name - return a string for drm fourcc format
245 * @format: format to compute name of
247 * Note that the buffer used by this function is globally shared and owned by
248 * the function itself.
250 * FIXME: This isn't really multithreading safe.
252 const char *drm_get_format_name(uint32_t format
)
256 snprintf(buf
, sizeof(buf
),
257 "%c%c%c%c %s-endian (0x%08x)",
258 printable_char(format
& 0xff),
259 printable_char((format
>> 8) & 0xff),
260 printable_char((format
>> 16) & 0xff),
261 printable_char((format
>> 24) & 0x7f),
262 format
& DRM_FORMAT_BIG_ENDIAN
? "big" : "little",
267 EXPORT_SYMBOL(drm_get_format_name
);
270 * Internal function to assign a slot in the object idr and optionally
271 * register the object into the idr.
273 static int drm_mode_object_get_reg(struct drm_device
*dev
,
274 struct drm_mode_object
*obj
,
280 mutex_lock(&dev
->mode_config
.idr_mutex
);
281 ret
= idr_alloc(&dev
->mode_config
.crtc_idr
, register_obj
? obj
: NULL
, 1, 0, GFP_KERNEL
);
284 * Set up the object linking under the protection of the idr
285 * lock so that other users can't see inconsistent state.
288 obj
->type
= obj_type
;
290 mutex_unlock(&dev
->mode_config
.idr_mutex
);
292 return ret
< 0 ? ret
: 0;
296 * drm_mode_object_get - allocate a new modeset identifier
298 * @obj: object pointer, used to generate unique ID
299 * @obj_type: object type
301 * Create a unique identifier based on @ptr in @dev's identifier space. Used
302 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
303 * modeset identifiers are _not_ reference counted. Hence don't use this for
304 * reference counted modeset objects like framebuffers.
307 * New unique (relative to other objects in @dev) integer identifier for the
310 int drm_mode_object_get(struct drm_device
*dev
,
311 struct drm_mode_object
*obj
, uint32_t obj_type
)
313 return drm_mode_object_get_reg(dev
, obj
, obj_type
, true);
316 static void drm_mode_object_register(struct drm_device
*dev
,
317 struct drm_mode_object
*obj
)
319 mutex_lock(&dev
->mode_config
.idr_mutex
);
320 idr_replace(&dev
->mode_config
.crtc_idr
, obj
, obj
->id
);
321 mutex_unlock(&dev
->mode_config
.idr_mutex
);
325 * drm_mode_object_put - free a modeset identifer
327 * @object: object to free
329 * Free @id from @dev's unique identifier pool. Note that despite the _get
330 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
331 * for reference counted modeset objects like framebuffers.
333 void drm_mode_object_put(struct drm_device
*dev
,
334 struct drm_mode_object
*object
)
336 mutex_lock(&dev
->mode_config
.idr_mutex
);
337 idr_remove(&dev
->mode_config
.crtc_idr
, object
->id
);
338 mutex_unlock(&dev
->mode_config
.idr_mutex
);
341 static struct drm_mode_object
*_object_find(struct drm_device
*dev
,
342 uint32_t id
, uint32_t type
)
344 struct drm_mode_object
*obj
= NULL
;
346 mutex_lock(&dev
->mode_config
.idr_mutex
);
347 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
348 if (obj
&& type
!= DRM_MODE_OBJECT_ANY
&& obj
->type
!= type
)
350 if (obj
&& obj
->id
!= id
)
352 /* don't leak out unref'd fb's */
353 if (obj
&& (obj
->type
== DRM_MODE_OBJECT_FB
))
355 mutex_unlock(&dev
->mode_config
.idr_mutex
);
361 * drm_mode_object_find - look up a drm object with static lifetime
363 * @id: id of the mode object
364 * @type: type of the mode object
366 * Note that framebuffers cannot be looked up with this functions - since those
367 * are reference counted, they need special treatment. Even with
368 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
369 * rather than WARN_ON()).
371 struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
372 uint32_t id
, uint32_t type
)
374 struct drm_mode_object
*obj
= NULL
;
376 /* Framebuffers are reference counted and need their own lookup
378 WARN_ON(type
== DRM_MODE_OBJECT_FB
);
379 obj
= _object_find(dev
, id
, type
);
382 EXPORT_SYMBOL(drm_mode_object_find
);
385 * drm_framebuffer_init - initialize a framebuffer
387 * @fb: framebuffer to be initialized
388 * @funcs: ... with these functions
390 * Allocates an ID for the framebuffer's parent mode object, sets its mode
391 * functions & device file and adds it to the master fd list.
394 * This functions publishes the fb and makes it available for concurrent access
395 * by other users. Which means by this point the fb _must_ be fully set up -
396 * since all the fb attributes are invariant over its lifetime, no further
397 * locking but only correct reference counting is required.
400 * Zero on success, error code on failure.
402 int drm_framebuffer_init(struct drm_device
*dev
, struct drm_framebuffer
*fb
,
403 const struct drm_framebuffer_funcs
*funcs
)
407 mutex_lock(&dev
->mode_config
.fb_lock
);
408 kref_init(&fb
->refcount
);
409 INIT_LIST_HEAD(&fb
->filp_head
);
413 ret
= drm_mode_object_get(dev
, &fb
->base
, DRM_MODE_OBJECT_FB
);
417 dev
->mode_config
.num_fb
++;
418 list_add(&fb
->head
, &dev
->mode_config
.fb_list
);
420 mutex_unlock(&dev
->mode_config
.fb_lock
);
424 EXPORT_SYMBOL(drm_framebuffer_init
);
426 /* dev->mode_config.fb_lock must be held! */
427 static void __drm_framebuffer_unregister(struct drm_device
*dev
,
428 struct drm_framebuffer
*fb
)
430 mutex_lock(&dev
->mode_config
.idr_mutex
);
431 idr_remove(&dev
->mode_config
.crtc_idr
, fb
->base
.id
);
432 mutex_unlock(&dev
->mode_config
.idr_mutex
);
437 static void drm_framebuffer_free(struct kref
*kref
)
439 struct drm_framebuffer
*fb
=
440 container_of(kref
, struct drm_framebuffer
, refcount
);
441 struct drm_device
*dev
= fb
->dev
;
444 * The lookup idr holds a weak reference, which has not necessarily been
445 * removed at this point. Check for that.
447 mutex_lock(&dev
->mode_config
.fb_lock
);
449 /* Mark fb as reaped and drop idr ref. */
450 __drm_framebuffer_unregister(dev
, fb
);
452 mutex_unlock(&dev
->mode_config
.fb_lock
);
454 fb
->funcs
->destroy(fb
);
457 static struct drm_framebuffer
*__drm_framebuffer_lookup(struct drm_device
*dev
,
460 struct drm_mode_object
*obj
= NULL
;
461 struct drm_framebuffer
*fb
;
463 mutex_lock(&dev
->mode_config
.idr_mutex
);
464 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
465 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_FB
) || (obj
->id
!= id
))
469 mutex_unlock(&dev
->mode_config
.idr_mutex
);
475 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
477 * @id: id of the fb object
479 * If successful, this grabs an additional reference to the framebuffer -
480 * callers need to make sure to eventually unreference the returned framebuffer
481 * again, using @drm_framebuffer_unreference.
483 struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
486 struct drm_framebuffer
*fb
;
488 mutex_lock(&dev
->mode_config
.fb_lock
);
489 fb
= __drm_framebuffer_lookup(dev
, id
);
491 if (!kref_get_unless_zero(&fb
->refcount
))
494 mutex_unlock(&dev
->mode_config
.fb_lock
);
498 EXPORT_SYMBOL(drm_framebuffer_lookup
);
501 * drm_framebuffer_unreference - unref a framebuffer
502 * @fb: framebuffer to unref
504 * This functions decrements the fb's refcount and frees it if it drops to zero.
506 void drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
508 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
509 kref_put(&fb
->refcount
, drm_framebuffer_free
);
511 EXPORT_SYMBOL(drm_framebuffer_unreference
);
514 * drm_framebuffer_reference - incr the fb refcnt
517 * This functions increments the fb's refcount.
519 void drm_framebuffer_reference(struct drm_framebuffer
*fb
)
521 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
522 kref_get(&fb
->refcount
);
524 EXPORT_SYMBOL(drm_framebuffer_reference
);
526 static void drm_framebuffer_free_bug(struct kref
*kref
)
531 static void __drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
533 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
534 kref_put(&fb
->refcount
, drm_framebuffer_free_bug
);
538 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
539 * @fb: fb to unregister
541 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
542 * those used for fbdev. Note that the caller must hold a reference of it's own,
543 * i.e. the object may not be destroyed through this call (since it'll lead to a
544 * locking inversion).
546 void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
)
548 struct drm_device
*dev
= fb
->dev
;
550 mutex_lock(&dev
->mode_config
.fb_lock
);
551 /* Mark fb as reaped and drop idr ref. */
552 __drm_framebuffer_unregister(dev
, fb
);
553 mutex_unlock(&dev
->mode_config
.fb_lock
);
555 EXPORT_SYMBOL(drm_framebuffer_unregister_private
);
558 * drm_framebuffer_cleanup - remove a framebuffer object
559 * @fb: framebuffer to remove
561 * Cleanup framebuffer. This function is intended to be used from the drivers
562 * ->destroy callback. It can also be used to clean up driver private
563 * framebuffers embedded into a larger structure.
565 * Note that this function does not remove the fb from active usuage - if it is
566 * still used anywhere, hilarity can ensue since userspace could call getfb on
567 * the id and get back -EINVAL. Obviously no concern at driver unload time.
569 * Also, the framebuffer will not be removed from the lookup idr - for
570 * user-created framebuffers this will happen in in the rmfb ioctl. For
571 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
572 * drm_framebuffer_unregister_private.
574 void drm_framebuffer_cleanup(struct drm_framebuffer
*fb
)
576 struct drm_device
*dev
= fb
->dev
;
578 mutex_lock(&dev
->mode_config
.fb_lock
);
580 dev
->mode_config
.num_fb
--;
581 mutex_unlock(&dev
->mode_config
.fb_lock
);
583 EXPORT_SYMBOL(drm_framebuffer_cleanup
);
586 * drm_framebuffer_remove - remove and unreference a framebuffer object
587 * @fb: framebuffer to remove
589 * Scans all the CRTCs and planes in @dev's mode_config. If they're
590 * using @fb, removes it, setting it to NULL. Then drops the reference to the
591 * passed-in framebuffer. Might take the modeset locks.
593 * Note that this function optimizes the cleanup away if the caller holds the
594 * last reference to the framebuffer. It is also guaranteed to not take the
595 * modeset locks in this case.
597 void drm_framebuffer_remove(struct drm_framebuffer
*fb
)
599 struct drm_device
*dev
= fb
->dev
;
600 struct drm_crtc
*crtc
;
601 struct drm_plane
*plane
;
602 struct drm_mode_set set
;
605 WARN_ON(!list_empty(&fb
->filp_head
));
608 * drm ABI mandates that we remove any deleted framebuffers from active
609 * useage. But since most sane clients only remove framebuffers they no
610 * longer need, try to optimize this away.
612 * Since we're holding a reference ourselves, observing a refcount of 1
613 * means that we're the last holder and can skip it. Also, the refcount
614 * can never increase from 1 again, so we don't need any barriers or
617 * Note that userspace could try to race with use and instate a new
618 * usage _after_ we've cleared all current ones. End result will be an
619 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
622 if (atomic_read(&fb
->refcount
.refcount
) > 1) {
623 drm_modeset_lock_all(dev
);
624 /* remove from any CRTC */
625 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
626 if (crtc
->primary
->fb
== fb
) {
627 /* should turn off the crtc */
628 memset(&set
, 0, sizeof(struct drm_mode_set
));
631 ret
= drm_mode_set_config_internal(&set
);
633 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc
);
637 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
) {
639 drm_plane_force_disable(plane
);
641 drm_modeset_unlock_all(dev
);
644 drm_framebuffer_unreference(fb
);
646 EXPORT_SYMBOL(drm_framebuffer_remove
);
648 DEFINE_WW_CLASS(crtc_ww_class
);
651 * drm_crtc_init_with_planes - Initialise a new CRTC object with
652 * specified primary and cursor planes.
654 * @crtc: CRTC object to init
655 * @primary: Primary plane for CRTC
656 * @cursor: Cursor plane for CRTC
657 * @funcs: callbacks for the new CRTC
659 * Inits a new object created as base part of a driver crtc object.
662 * Zero on success, error code on failure.
664 int drm_crtc_init_with_planes(struct drm_device
*dev
, struct drm_crtc
*crtc
,
665 struct drm_plane
*primary
,
666 struct drm_plane
*cursor
,
667 const struct drm_crtc_funcs
*funcs
)
669 struct drm_mode_config
*config
= &dev
->mode_config
;
674 crtc
->invert_dimensions
= false;
676 drm_modeset_lock_init(&crtc
->mutex
);
677 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
681 crtc
->base
.properties
= &crtc
->properties
;
683 list_add_tail(&crtc
->head
, &config
->crtc_list
);
686 crtc
->primary
= primary
;
687 crtc
->cursor
= cursor
;
689 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
691 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
695 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
698 * drm_crtc_cleanup - Clean up the core crtc usage
699 * @crtc: CRTC to cleanup
701 * This function cleans up @crtc and removes it from the DRM mode setting
702 * core. Note that the function does *not* free the crtc structure itself,
703 * this is the responsibility of the caller.
705 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
707 struct drm_device
*dev
= crtc
->dev
;
709 kfree(crtc
->gamma_store
);
710 crtc
->gamma_store
= NULL
;
712 drm_modeset_lock_fini(&crtc
->mutex
);
714 drm_mode_object_put(dev
, &crtc
->base
);
715 list_del(&crtc
->head
);
716 dev
->mode_config
.num_crtc
--;
718 WARN_ON(crtc
->state
&& !crtc
->funcs
->atomic_destroy_state
);
719 if (crtc
->state
&& crtc
->funcs
->atomic_destroy_state
)
720 crtc
->funcs
->atomic_destroy_state(crtc
, crtc
->state
);
722 memset(crtc
, 0, sizeof(*crtc
));
724 EXPORT_SYMBOL(drm_crtc_cleanup
);
727 * drm_crtc_index - find the index of a registered CRTC
728 * @crtc: CRTC to find index for
730 * Given a registered CRTC, return the index of that CRTC within a DRM
731 * device's list of CRTCs.
733 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
735 unsigned int index
= 0;
736 struct drm_crtc
*tmp
;
738 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
747 EXPORT_SYMBOL(drm_crtc_index
);
750 * drm_mode_remove - remove and free a mode
751 * @connector: connector list to modify
752 * @mode: mode to remove
754 * Remove @mode from @connector's mode list, then free it.
756 static void drm_mode_remove(struct drm_connector
*connector
,
757 struct drm_display_mode
*mode
)
759 list_del(&mode
->head
);
760 drm_mode_destroy(connector
->dev
, mode
);
764 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
765 * @connector: connector to quwery
767 * The kernel supports per-connector configration of its consoles through
768 * use of the video= parameter. This function parses that option and
769 * extracts the user's specified mode (or enable/disable status) for a
770 * particular connector. This is typically only used during the early fbdev
773 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
775 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
778 if (fb_get_options(connector
->name
, &option
))
781 if (!drm_mode_parse_command_line_for_connector(option
,
789 switch (mode
->force
) {
793 case DRM_FORCE_ON_DIGITAL
:
802 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
803 connector
->force
= mode
->force
;
806 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
808 mode
->xres
, mode
->yres
,
809 mode
->refresh_specified
? mode
->refresh
: 60,
810 mode
->rb
? " reduced blanking" : "",
811 mode
->margins
? " with margins" : "",
812 mode
->interlace
? " interlaced" : "");
816 * drm_connector_init - Init a preallocated connector
818 * @connector: the connector to init
819 * @funcs: callbacks for this connector
820 * @connector_type: user visible type of the connector
822 * Initialises a preallocated connector. Connectors should be
823 * subclassed as part of driver connector objects.
826 * Zero on success, error code on failure.
828 int drm_connector_init(struct drm_device
*dev
,
829 struct drm_connector
*connector
,
830 const struct drm_connector_funcs
*funcs
,
834 struct ida
*connector_ida
=
835 &drm_connector_enum_list
[connector_type
].ida
;
837 drm_modeset_lock_all(dev
);
839 ret
= drm_mode_object_get_reg(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
, false);
843 connector
->base
.properties
= &connector
->properties
;
844 connector
->dev
= dev
;
845 connector
->funcs
= funcs
;
846 connector
->connector_type
= connector_type
;
847 connector
->connector_type_id
=
848 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
849 if (connector
->connector_type_id
< 0) {
850 ret
= connector
->connector_type_id
;
854 kasprintf(GFP_KERNEL
, "%s-%d",
855 drm_connector_enum_list
[connector_type
].name
,
856 connector
->connector_type_id
);
857 if (!connector
->name
) {
862 INIT_LIST_HEAD(&connector
->probed_modes
);
863 INIT_LIST_HEAD(&connector
->modes
);
864 connector
->edid_blob_ptr
= NULL
;
865 connector
->status
= connector_status_unknown
;
867 drm_connector_get_cmdline_mode(connector
);
869 /* We should add connectors at the end to avoid upsetting the connector
871 list_add_tail(&connector
->head
, &dev
->mode_config
.connector_list
);
872 dev
->mode_config
.num_connector
++;
874 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
875 drm_object_attach_property(&connector
->base
,
876 dev
->mode_config
.edid_property
,
879 drm_object_attach_property(&connector
->base
,
880 dev
->mode_config
.dpms_property
, 0);
882 connector
->debugfs_entry
= NULL
;
886 drm_mode_object_put(dev
, &connector
->base
);
889 drm_modeset_unlock_all(dev
);
893 EXPORT_SYMBOL(drm_connector_init
);
896 * drm_connector_cleanup - cleans up an initialised connector
897 * @connector: connector to cleanup
899 * Cleans up the connector but doesn't free the object.
901 void drm_connector_cleanup(struct drm_connector
*connector
)
903 struct drm_device
*dev
= connector
->dev
;
904 struct drm_display_mode
*mode
, *t
;
906 if (connector
->tile_group
) {
907 drm_mode_put_tile_group(dev
, connector
->tile_group
);
908 connector
->tile_group
= NULL
;
911 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
912 drm_mode_remove(connector
, mode
);
914 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
915 drm_mode_remove(connector
, mode
);
917 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
918 connector
->connector_type_id
);
920 drm_mode_object_put(dev
, &connector
->base
);
921 kfree(connector
->name
);
922 connector
->name
= NULL
;
923 list_del(&connector
->head
);
924 dev
->mode_config
.num_connector
--;
926 WARN_ON(connector
->state
&& !connector
->funcs
->atomic_destroy_state
);
927 if (connector
->state
&& connector
->funcs
->atomic_destroy_state
)
928 connector
->funcs
->atomic_destroy_state(connector
,
931 memset(connector
, 0, sizeof(*connector
));
933 EXPORT_SYMBOL(drm_connector_cleanup
);
936 * drm_connector_index - find the index of a registered connector
937 * @connector: connector to find index for
939 * Given a registered connector, return the index of that connector within a DRM
940 * device's list of connectors.
942 unsigned int drm_connector_index(struct drm_connector
*connector
)
944 unsigned int index
= 0;
945 struct drm_connector
*tmp
;
946 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
948 WARN_ON(!drm_modeset_is_locked(&config
->connection_mutex
));
950 list_for_each_entry(tmp
, &connector
->dev
->mode_config
.connector_list
, head
) {
951 if (tmp
== connector
)
959 EXPORT_SYMBOL(drm_connector_index
);
962 * drm_connector_register - register a connector
963 * @connector: the connector to register
965 * Register userspace interfaces for a connector
968 * Zero on success, error code on failure.
970 int drm_connector_register(struct drm_connector
*connector
)
974 drm_mode_object_register(connector
->dev
, &connector
->base
);
976 ret
= drm_sysfs_connector_add(connector
);
980 ret
= drm_debugfs_connector_add(connector
);
982 drm_sysfs_connector_remove(connector
);
988 EXPORT_SYMBOL(drm_connector_register
);
991 * drm_connector_unregister - unregister a connector
992 * @connector: the connector to unregister
994 * Unregister userspace interfaces for a connector
996 void drm_connector_unregister(struct drm_connector
*connector
)
998 drm_sysfs_connector_remove(connector
);
999 drm_debugfs_connector_remove(connector
);
1001 EXPORT_SYMBOL(drm_connector_unregister
);
1005 * drm_connector_unplug_all - unregister connector userspace interfaces
1008 * This function unregisters all connector userspace interfaces in sysfs. Should
1009 * be call when the device is disconnected, e.g. from an usb driver's
1010 * ->disconnect callback.
1012 void drm_connector_unplug_all(struct drm_device
*dev
)
1014 struct drm_connector
*connector
;
1016 /* taking the mode config mutex ends up in a clash with sysfs */
1017 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1018 drm_connector_unregister(connector
);
1021 EXPORT_SYMBOL(drm_connector_unplug_all
);
1024 * drm_bridge_init - initialize a drm transcoder/bridge
1026 * @bridge: transcoder/bridge to set up
1027 * @funcs: bridge function table
1029 * Initialises a preallocated bridge. Bridges should be
1030 * subclassed as part of driver connector objects.
1033 * Zero on success, error code on failure.
1035 int drm_bridge_init(struct drm_device
*dev
, struct drm_bridge
*bridge
,
1036 const struct drm_bridge_funcs
*funcs
)
1040 drm_modeset_lock_all(dev
);
1042 ret
= drm_mode_object_get(dev
, &bridge
->base
, DRM_MODE_OBJECT_BRIDGE
);
1047 bridge
->funcs
= funcs
;
1049 list_add_tail(&bridge
->head
, &dev
->mode_config
.bridge_list
);
1050 dev
->mode_config
.num_bridge
++;
1053 drm_modeset_unlock_all(dev
);
1056 EXPORT_SYMBOL(drm_bridge_init
);
1059 * drm_bridge_cleanup - cleans up an initialised bridge
1060 * @bridge: bridge to cleanup
1062 * Cleans up the bridge but doesn't free the object.
1064 void drm_bridge_cleanup(struct drm_bridge
*bridge
)
1066 struct drm_device
*dev
= bridge
->dev
;
1068 drm_modeset_lock_all(dev
);
1069 drm_mode_object_put(dev
, &bridge
->base
);
1070 list_del(&bridge
->head
);
1071 dev
->mode_config
.num_bridge
--;
1072 drm_modeset_unlock_all(dev
);
1074 memset(bridge
, 0, sizeof(*bridge
));
1076 EXPORT_SYMBOL(drm_bridge_cleanup
);
1079 * drm_encoder_init - Init a preallocated encoder
1081 * @encoder: the encoder to init
1082 * @funcs: callbacks for this encoder
1083 * @encoder_type: user visible type of the encoder
1085 * Initialises a preallocated encoder. Encoder should be
1086 * subclassed as part of driver encoder objects.
1089 * Zero on success, error code on failure.
1091 int drm_encoder_init(struct drm_device
*dev
,
1092 struct drm_encoder
*encoder
,
1093 const struct drm_encoder_funcs
*funcs
,
1098 drm_modeset_lock_all(dev
);
1100 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1105 encoder
->encoder_type
= encoder_type
;
1106 encoder
->funcs
= funcs
;
1107 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1108 drm_encoder_enum_list
[encoder_type
].name
,
1110 if (!encoder
->name
) {
1115 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1116 dev
->mode_config
.num_encoder
++;
1120 drm_mode_object_put(dev
, &encoder
->base
);
1123 drm_modeset_unlock_all(dev
);
1127 EXPORT_SYMBOL(drm_encoder_init
);
1130 * drm_encoder_cleanup - cleans up an initialised encoder
1131 * @encoder: encoder to cleanup
1133 * Cleans up the encoder but doesn't free the object.
1135 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1137 struct drm_device
*dev
= encoder
->dev
;
1139 drm_modeset_lock_all(dev
);
1140 drm_mode_object_put(dev
, &encoder
->base
);
1141 kfree(encoder
->name
);
1142 list_del(&encoder
->head
);
1143 dev
->mode_config
.num_encoder
--;
1144 drm_modeset_unlock_all(dev
);
1146 memset(encoder
, 0, sizeof(*encoder
));
1148 EXPORT_SYMBOL(drm_encoder_cleanup
);
1151 * drm_universal_plane_init - Initialize a new universal plane object
1153 * @plane: plane object to init
1154 * @possible_crtcs: bitmask of possible CRTCs
1155 * @funcs: callbacks for the new plane
1156 * @formats: array of supported formats (%DRM_FORMAT_*)
1157 * @format_count: number of elements in @formats
1158 * @type: type of plane (overlay, primary, cursor)
1160 * Initializes a plane object of type @type.
1163 * Zero on success, error code on failure.
1165 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1166 unsigned long possible_crtcs
,
1167 const struct drm_plane_funcs
*funcs
,
1168 const uint32_t *formats
, uint32_t format_count
,
1169 enum drm_plane_type type
)
1173 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1177 drm_modeset_lock_init(&plane
->mutex
);
1179 plane
->base
.properties
= &plane
->properties
;
1181 plane
->funcs
= funcs
;
1182 plane
->format_types
= kmalloc_array(format_count
, sizeof(uint32_t),
1184 if (!plane
->format_types
) {
1185 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1186 drm_mode_object_put(dev
, &plane
->base
);
1190 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1191 plane
->format_count
= format_count
;
1192 plane
->possible_crtcs
= possible_crtcs
;
1195 list_add_tail(&plane
->head
, &dev
->mode_config
.plane_list
);
1196 dev
->mode_config
.num_total_plane
++;
1197 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1198 dev
->mode_config
.num_overlay_plane
++;
1200 drm_object_attach_property(&plane
->base
,
1201 dev
->mode_config
.plane_type_property
,
1206 EXPORT_SYMBOL(drm_universal_plane_init
);
1209 * drm_plane_init - Initialize a legacy plane
1211 * @plane: plane object to init
1212 * @possible_crtcs: bitmask of possible CRTCs
1213 * @funcs: callbacks for the new plane
1214 * @formats: array of supported formats (%DRM_FORMAT_*)
1215 * @format_count: number of elements in @formats
1216 * @is_primary: plane type (primary vs overlay)
1218 * Legacy API to initialize a DRM plane.
1220 * New drivers should call drm_universal_plane_init() instead.
1223 * Zero on success, error code on failure.
1225 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1226 unsigned long possible_crtcs
,
1227 const struct drm_plane_funcs
*funcs
,
1228 const uint32_t *formats
, uint32_t format_count
,
1231 enum drm_plane_type type
;
1233 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1234 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1235 formats
, format_count
, type
);
1237 EXPORT_SYMBOL(drm_plane_init
);
1240 * drm_plane_cleanup - Clean up the core plane usage
1241 * @plane: plane to cleanup
1243 * This function cleans up @plane and removes it from the DRM mode setting
1244 * core. Note that the function does *not* free the plane structure itself,
1245 * this is the responsibility of the caller.
1247 void drm_plane_cleanup(struct drm_plane
*plane
)
1249 struct drm_device
*dev
= plane
->dev
;
1251 drm_modeset_lock_all(dev
);
1252 kfree(plane
->format_types
);
1253 drm_mode_object_put(dev
, &plane
->base
);
1255 BUG_ON(list_empty(&plane
->head
));
1257 list_del(&plane
->head
);
1258 dev
->mode_config
.num_total_plane
--;
1259 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1260 dev
->mode_config
.num_overlay_plane
--;
1261 drm_modeset_unlock_all(dev
);
1263 WARN_ON(plane
->state
&& !plane
->funcs
->atomic_destroy_state
);
1264 if (plane
->state
&& plane
->funcs
->atomic_destroy_state
)
1265 plane
->funcs
->atomic_destroy_state(plane
, plane
->state
);
1267 memset(plane
, 0, sizeof(*plane
));
1269 EXPORT_SYMBOL(drm_plane_cleanup
);
1272 * drm_plane_index - find the index of a registered plane
1273 * @plane: plane to find index for
1275 * Given a registered plane, return the index of that CRTC within a DRM
1276 * device's list of planes.
1278 unsigned int drm_plane_index(struct drm_plane
*plane
)
1280 unsigned int index
= 0;
1281 struct drm_plane
*tmp
;
1283 list_for_each_entry(tmp
, &plane
->dev
->mode_config
.plane_list
, head
) {
1292 EXPORT_SYMBOL(drm_plane_index
);
1295 * drm_plane_force_disable - Forcibly disable a plane
1296 * @plane: plane to disable
1298 * Forces the plane to be disabled.
1300 * Used when the plane's current framebuffer is destroyed,
1301 * and when restoring fbdev mode.
1303 void drm_plane_force_disable(struct drm_plane
*plane
)
1310 plane
->old_fb
= plane
->fb
;
1311 ret
= plane
->funcs
->disable_plane(plane
);
1313 DRM_ERROR("failed to disable plane with busy fb\n");
1314 plane
->old_fb
= NULL
;
1317 /* disconnect the plane from the fb and crtc: */
1318 __drm_framebuffer_unreference(plane
->old_fb
);
1319 plane
->old_fb
= NULL
;
1323 EXPORT_SYMBOL(drm_plane_force_disable
);
1325 static int drm_mode_create_standard_connector_properties(struct drm_device
*dev
)
1327 struct drm_property
*edid
;
1328 struct drm_property
*dpms
;
1329 struct drm_property
*dev_path
;
1332 * Standard properties (apply to all connectors)
1334 edid
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1335 DRM_MODE_PROP_IMMUTABLE
,
1337 dev
->mode_config
.edid_property
= edid
;
1339 dpms
= drm_property_create_enum(dev
, 0,
1340 "DPMS", drm_dpms_enum_list
,
1341 ARRAY_SIZE(drm_dpms_enum_list
));
1342 dev
->mode_config
.dpms_property
= dpms
;
1344 dev_path
= drm_property_create(dev
,
1345 DRM_MODE_PROP_BLOB
|
1346 DRM_MODE_PROP_IMMUTABLE
,
1348 dev
->mode_config
.path_property
= dev_path
;
1350 dev
->mode_config
.tile_property
= drm_property_create(dev
,
1351 DRM_MODE_PROP_BLOB
|
1352 DRM_MODE_PROP_IMMUTABLE
,
1358 static int drm_mode_create_standard_plane_properties(struct drm_device
*dev
)
1360 struct drm_property
*type
;
1363 * Standard properties (apply to all planes)
1365 type
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1366 "type", drm_plane_type_enum_list
,
1367 ARRAY_SIZE(drm_plane_type_enum_list
));
1368 dev
->mode_config
.plane_type_property
= type
;
1374 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1377 * Called by a driver the first time a DVI-I connector is made.
1379 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1381 struct drm_property
*dvi_i_selector
;
1382 struct drm_property
*dvi_i_subconnector
;
1384 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1388 drm_property_create_enum(dev
, 0,
1389 "select subconnector",
1390 drm_dvi_i_select_enum_list
,
1391 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1392 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1394 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1396 drm_dvi_i_subconnector_enum_list
,
1397 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1398 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1402 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1405 * drm_create_tv_properties - create TV specific connector properties
1407 * @num_modes: number of different TV formats (modes) supported
1408 * @modes: array of pointers to strings containing name of each format
1410 * Called by a driver's TV initialization routine, this function creates
1411 * the TV specific connector properties for a given device. Caller is
1412 * responsible for allocating a list of format names and passing them to
1415 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1416 unsigned int num_modes
,
1419 struct drm_property
*tv_selector
;
1420 struct drm_property
*tv_subconnector
;
1423 if (dev
->mode_config
.tv_select_subconnector_property
)
1427 * Basic connector properties
1429 tv_selector
= drm_property_create_enum(dev
, 0,
1430 "select subconnector",
1431 drm_tv_select_enum_list
,
1432 ARRAY_SIZE(drm_tv_select_enum_list
));
1433 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1436 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1438 drm_tv_subconnector_enum_list
,
1439 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1440 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1443 * Other, TV specific properties: margins & TV modes.
1445 dev
->mode_config
.tv_left_margin_property
=
1446 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1448 dev
->mode_config
.tv_right_margin_property
=
1449 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1451 dev
->mode_config
.tv_top_margin_property
=
1452 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1454 dev
->mode_config
.tv_bottom_margin_property
=
1455 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1457 dev
->mode_config
.tv_mode_property
=
1458 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1460 for (i
= 0; i
< num_modes
; i
++)
1461 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1464 dev
->mode_config
.tv_brightness_property
=
1465 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1467 dev
->mode_config
.tv_contrast_property
=
1468 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1470 dev
->mode_config
.tv_flicker_reduction_property
=
1471 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1473 dev
->mode_config
.tv_overscan_property
=
1474 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1476 dev
->mode_config
.tv_saturation_property
=
1477 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1479 dev
->mode_config
.tv_hue_property
=
1480 drm_property_create_range(dev
, 0, "hue", 0, 100);
1484 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1487 * drm_mode_create_scaling_mode_property - create scaling mode property
1490 * Called by a driver the first time it's needed, must be attached to desired
1493 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1495 struct drm_property
*scaling_mode
;
1497 if (dev
->mode_config
.scaling_mode_property
)
1501 drm_property_create_enum(dev
, 0, "scaling mode",
1502 drm_scaling_mode_enum_list
,
1503 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1505 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1509 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1512 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1515 * Called by a driver the first time it's needed, must be attached to desired
1519 * Zero on success, negative errno on failure.
1521 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1523 if (dev
->mode_config
.aspect_ratio_property
)
1526 dev
->mode_config
.aspect_ratio_property
=
1527 drm_property_create_enum(dev
, 0, "aspect ratio",
1528 drm_aspect_ratio_enum_list
,
1529 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1531 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1536 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1539 * drm_mode_create_dirty_property - create dirty property
1542 * Called by a driver the first time it's needed, must be attached to desired
1545 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1547 struct drm_property
*dirty_info
;
1549 if (dev
->mode_config
.dirty_info_property
)
1553 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1555 drm_dirty_info_enum_list
,
1556 ARRAY_SIZE(drm_dirty_info_enum_list
));
1557 dev
->mode_config
.dirty_info_property
= dirty_info
;
1561 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1564 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1567 * Create the the suggested x/y offset property for connectors.
1569 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1571 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1574 dev
->mode_config
.suggested_x_property
=
1575 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1577 dev
->mode_config
.suggested_y_property
=
1578 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1580 if (dev
->mode_config
.suggested_x_property
== NULL
||
1581 dev
->mode_config
.suggested_y_property
== NULL
)
1585 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1587 static int drm_mode_group_init(struct drm_device
*dev
, struct drm_mode_group
*group
)
1589 uint32_t total_objects
= 0;
1591 total_objects
+= dev
->mode_config
.num_crtc
;
1592 total_objects
+= dev
->mode_config
.num_connector
;
1593 total_objects
+= dev
->mode_config
.num_encoder
;
1594 total_objects
+= dev
->mode_config
.num_bridge
;
1596 group
->id_list
= kcalloc(total_objects
, sizeof(uint32_t), GFP_KERNEL
);
1597 if (!group
->id_list
)
1600 group
->num_crtcs
= 0;
1601 group
->num_connectors
= 0;
1602 group
->num_encoders
= 0;
1603 group
->num_bridges
= 0;
1607 void drm_mode_group_destroy(struct drm_mode_group
*group
)
1609 kfree(group
->id_list
);
1610 group
->id_list
= NULL
;
1614 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1615 * the drm core's responsibility to set up mode control groups.
1617 int drm_mode_group_init_legacy_group(struct drm_device
*dev
,
1618 struct drm_mode_group
*group
)
1620 struct drm_crtc
*crtc
;
1621 struct drm_encoder
*encoder
;
1622 struct drm_connector
*connector
;
1623 struct drm_bridge
*bridge
;
1626 ret
= drm_mode_group_init(dev
, group
);
1630 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
1631 group
->id_list
[group
->num_crtcs
++] = crtc
->base
.id
;
1633 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
1634 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
++] =
1637 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1638 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1639 group
->num_connectors
++] = connector
->base
.id
;
1641 list_for_each_entry(bridge
, &dev
->mode_config
.bridge_list
, head
)
1642 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1643 group
->num_connectors
+ group
->num_bridges
++] =
1648 EXPORT_SYMBOL(drm_mode_group_init_legacy_group
);
1650 void drm_reinit_primary_mode_group(struct drm_device
*dev
)
1652 drm_modeset_lock_all(dev
);
1653 drm_mode_group_destroy(&dev
->primary
->mode_group
);
1654 drm_mode_group_init_legacy_group(dev
, &dev
->primary
->mode_group
);
1655 drm_modeset_unlock_all(dev
);
1657 EXPORT_SYMBOL(drm_reinit_primary_mode_group
);
1660 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1661 * @out: drm_mode_modeinfo struct to return to the user
1662 * @in: drm_display_mode to use
1664 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1667 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo
*out
,
1668 const struct drm_display_mode
*in
)
1670 WARN(in
->hdisplay
> USHRT_MAX
|| in
->hsync_start
> USHRT_MAX
||
1671 in
->hsync_end
> USHRT_MAX
|| in
->htotal
> USHRT_MAX
||
1672 in
->hskew
> USHRT_MAX
|| in
->vdisplay
> USHRT_MAX
||
1673 in
->vsync_start
> USHRT_MAX
|| in
->vsync_end
> USHRT_MAX
||
1674 in
->vtotal
> USHRT_MAX
|| in
->vscan
> USHRT_MAX
,
1675 "timing values too large for mode info\n");
1677 out
->clock
= in
->clock
;
1678 out
->hdisplay
= in
->hdisplay
;
1679 out
->hsync_start
= in
->hsync_start
;
1680 out
->hsync_end
= in
->hsync_end
;
1681 out
->htotal
= in
->htotal
;
1682 out
->hskew
= in
->hskew
;
1683 out
->vdisplay
= in
->vdisplay
;
1684 out
->vsync_start
= in
->vsync_start
;
1685 out
->vsync_end
= in
->vsync_end
;
1686 out
->vtotal
= in
->vtotal
;
1687 out
->vscan
= in
->vscan
;
1688 out
->vrefresh
= in
->vrefresh
;
1689 out
->flags
= in
->flags
;
1690 out
->type
= in
->type
;
1691 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1692 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1696 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1697 * @out: drm_display_mode to return to the user
1698 * @in: drm_mode_modeinfo to use
1700 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1704 * Zero on success, negative errno on failure.
1706 static int drm_crtc_convert_umode(struct drm_display_mode
*out
,
1707 const struct drm_mode_modeinfo
*in
)
1709 if (in
->clock
> INT_MAX
|| in
->vrefresh
> INT_MAX
)
1712 if ((in
->flags
& DRM_MODE_FLAG_3D_MASK
) > DRM_MODE_FLAG_3D_MAX
)
1715 out
->clock
= in
->clock
;
1716 out
->hdisplay
= in
->hdisplay
;
1717 out
->hsync_start
= in
->hsync_start
;
1718 out
->hsync_end
= in
->hsync_end
;
1719 out
->htotal
= in
->htotal
;
1720 out
->hskew
= in
->hskew
;
1721 out
->vdisplay
= in
->vdisplay
;
1722 out
->vsync_start
= in
->vsync_start
;
1723 out
->vsync_end
= in
->vsync_end
;
1724 out
->vtotal
= in
->vtotal
;
1725 out
->vscan
= in
->vscan
;
1726 out
->vrefresh
= in
->vrefresh
;
1727 out
->flags
= in
->flags
;
1728 out
->type
= in
->type
;
1729 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1730 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1736 * drm_mode_getresources - get graphics configuration
1737 * @dev: drm device for the ioctl
1738 * @data: data pointer for the ioctl
1739 * @file_priv: drm file for the ioctl call
1741 * Construct a set of configuration description structures and return
1742 * them to the user, including CRTC, connector and framebuffer configuration.
1744 * Called by the user via ioctl.
1747 * Zero on success, negative errno on failure.
1749 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1750 struct drm_file
*file_priv
)
1752 struct drm_mode_card_res
*card_res
= data
;
1753 struct list_head
*lh
;
1754 struct drm_framebuffer
*fb
;
1755 struct drm_connector
*connector
;
1756 struct drm_crtc
*crtc
;
1757 struct drm_encoder
*encoder
;
1759 int connector_count
= 0;
1762 int encoder_count
= 0;
1764 uint32_t __user
*fb_id
;
1765 uint32_t __user
*crtc_id
;
1766 uint32_t __user
*connector_id
;
1767 uint32_t __user
*encoder_id
;
1768 struct drm_mode_group
*mode_group
;
1770 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1774 mutex_lock(&file_priv
->fbs_lock
);
1776 * For the non-control nodes we need to limit the list of resources
1777 * by IDs in the group list for this node
1779 list_for_each(lh
, &file_priv
->fbs
)
1782 /* handle this in 4 parts */
1784 if (card_res
->count_fbs
>= fb_count
) {
1786 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1787 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1788 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1789 mutex_unlock(&file_priv
->fbs_lock
);
1795 card_res
->count_fbs
= fb_count
;
1796 mutex_unlock(&file_priv
->fbs_lock
);
1798 /* mode_config.mutex protects the connector list against e.g. DP MST
1799 * connector hot-adding. CRTC/Plane lists are invariant. */
1800 mutex_lock(&dev
->mode_config
.mutex
);
1801 if (!drm_is_primary_client(file_priv
)) {
1804 list_for_each(lh
, &dev
->mode_config
.crtc_list
)
1807 list_for_each(lh
, &dev
->mode_config
.connector_list
)
1810 list_for_each(lh
, &dev
->mode_config
.encoder_list
)
1814 mode_group
= &file_priv
->master
->minor
->mode_group
;
1815 crtc_count
= mode_group
->num_crtcs
;
1816 connector_count
= mode_group
->num_connectors
;
1817 encoder_count
= mode_group
->num_encoders
;
1820 card_res
->max_height
= dev
->mode_config
.max_height
;
1821 card_res
->min_height
= dev
->mode_config
.min_height
;
1822 card_res
->max_width
= dev
->mode_config
.max_width
;
1823 card_res
->min_width
= dev
->mode_config
.min_width
;
1826 if (card_res
->count_crtcs
>= crtc_count
) {
1828 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1830 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
,
1832 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1833 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1840 for (i
= 0; i
< mode_group
->num_crtcs
; i
++) {
1841 if (put_user(mode_group
->id_list
[i
],
1842 crtc_id
+ copied
)) {
1850 card_res
->count_crtcs
= crtc_count
;
1853 if (card_res
->count_encoders
>= encoder_count
) {
1855 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1857 list_for_each_entry(encoder
,
1858 &dev
->mode_config
.encoder_list
,
1860 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1862 if (put_user(encoder
->base
.id
, encoder_id
+
1870 for (i
= mode_group
->num_crtcs
; i
< mode_group
->num_crtcs
+ mode_group
->num_encoders
; i
++) {
1871 if (put_user(mode_group
->id_list
[i
],
1872 encoder_id
+ copied
)) {
1881 card_res
->count_encoders
= encoder_count
;
1884 if (card_res
->count_connectors
>= connector_count
) {
1886 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1888 list_for_each_entry(connector
,
1889 &dev
->mode_config
.connector_list
,
1891 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1894 if (put_user(connector
->base
.id
,
1895 connector_id
+ copied
)) {
1902 int start
= mode_group
->num_crtcs
+
1903 mode_group
->num_encoders
;
1904 for (i
= start
; i
< start
+ mode_group
->num_connectors
; i
++) {
1905 if (put_user(mode_group
->id_list
[i
],
1906 connector_id
+ copied
)) {
1914 card_res
->count_connectors
= connector_count
;
1916 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1917 card_res
->count_connectors
, card_res
->count_encoders
);
1920 mutex_unlock(&dev
->mode_config
.mutex
);
1925 * drm_mode_getcrtc - get CRTC configuration
1926 * @dev: drm device for the ioctl
1927 * @data: data pointer for the ioctl
1928 * @file_priv: drm file for the ioctl call
1930 * Construct a CRTC configuration structure to return to the user.
1932 * Called by the user via ioctl.
1935 * Zero on success, negative errno on failure.
1937 int drm_mode_getcrtc(struct drm_device
*dev
,
1938 void *data
, struct drm_file
*file_priv
)
1940 struct drm_mode_crtc
*crtc_resp
= data
;
1941 struct drm_crtc
*crtc
;
1943 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1946 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
1950 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
1951 crtc_resp
->x
= crtc
->x
;
1952 crtc_resp
->y
= crtc
->y
;
1953 crtc_resp
->gamma_size
= crtc
->gamma_size
;
1954 if (crtc
->primary
->fb
)
1955 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
1957 crtc_resp
->fb_id
= 0;
1959 if (crtc
->enabled
) {
1961 drm_crtc_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
1962 crtc_resp
->mode_valid
= 1;
1965 crtc_resp
->mode_valid
= 0;
1967 drm_modeset_unlock_crtc(crtc
);
1972 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1973 const struct drm_file
*file_priv
)
1976 * If user-space hasn't configured the driver to expose the stereo 3D
1977 * modes, don't expose them.
1979 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
1985 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
1987 /* For atomic drivers only state objects are synchronously updated and
1988 * protected by modeset locks, so check those first. */
1989 if (connector
->state
)
1990 return connector
->state
->best_encoder
;
1991 return connector
->encoder
;
1995 * drm_mode_getconnector - get connector configuration
1996 * @dev: drm device for the ioctl
1997 * @data: data pointer for the ioctl
1998 * @file_priv: drm file for the ioctl call
2000 * Construct a connector configuration structure to return to the user.
2002 * Called by the user via ioctl.
2005 * Zero on success, negative errno on failure.
2007 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
2008 struct drm_file
*file_priv
)
2010 struct drm_mode_get_connector
*out_resp
= data
;
2011 struct drm_connector
*connector
;
2012 struct drm_encoder
*encoder
;
2013 struct drm_display_mode
*mode
;
2015 int props_count
= 0;
2016 int encoders_count
= 0;
2020 struct drm_mode_modeinfo u_mode
;
2021 struct drm_mode_modeinfo __user
*mode_ptr
;
2022 uint32_t __user
*prop_ptr
;
2023 uint64_t __user
*prop_values
;
2024 uint32_t __user
*encoder_ptr
;
2026 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2029 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
2031 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
2033 mutex_lock(&dev
->mode_config
.mutex
);
2034 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2036 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
2042 props_count
= connector
->properties
.count
;
2044 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++)
2045 if (connector
->encoder_ids
[i
] != 0)
2048 if (out_resp
->count_modes
== 0) {
2049 connector
->funcs
->fill_modes(connector
,
2050 dev
->mode_config
.max_width
,
2051 dev
->mode_config
.max_height
);
2054 /* delayed so we get modes regardless of pre-fill_modes state */
2055 list_for_each_entry(mode
, &connector
->modes
, head
)
2056 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2059 out_resp
->connector_id
= connector
->base
.id
;
2060 out_resp
->connector_type
= connector
->connector_type
;
2061 out_resp
->connector_type_id
= connector
->connector_type_id
;
2062 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2063 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2064 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2065 out_resp
->connection
= connector
->status
;
2066 encoder
= drm_connector_get_encoder(connector
);
2068 out_resp
->encoder_id
= encoder
->base
.id
;
2070 out_resp
->encoder_id
= 0;
2073 * This ioctl is called twice, once to determine how much space is
2074 * needed, and the 2nd time to fill it.
2076 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2078 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2079 list_for_each_entry(mode
, &connector
->modes
, head
) {
2080 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2083 drm_crtc_convert_to_umode(&u_mode
, mode
);
2084 if (copy_to_user(mode_ptr
+ copied
,
2085 &u_mode
, sizeof(u_mode
))) {
2092 out_resp
->count_modes
= mode_count
;
2094 if ((out_resp
->count_props
>= props_count
) && props_count
) {
2096 prop_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
);
2097 prop_values
= (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
);
2098 for (i
= 0; i
< connector
->properties
.count
; i
++) {
2099 struct drm_property
*prop
= connector
->properties
.properties
[i
];
2102 ret
= drm_object_property_get_value(&connector
->base
, prop
, &val
);
2106 if (put_user(prop
->base
.id
, prop_ptr
+ copied
)) {
2110 if (put_user(val
, prop_values
+ copied
)) {
2117 out_resp
->count_props
= props_count
;
2119 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2121 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2122 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2123 if (connector
->encoder_ids
[i
] != 0) {
2124 if (put_user(connector
->encoder_ids
[i
],
2125 encoder_ptr
+ copied
)) {
2133 out_resp
->count_encoders
= encoders_count
;
2136 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2137 mutex_unlock(&dev
->mode_config
.mutex
);
2142 static struct drm_crtc
*drm_encoder_get_crtc(struct drm_encoder
*encoder
)
2144 struct drm_connector
*connector
;
2145 struct drm_device
*dev
= encoder
->dev
;
2146 bool uses_atomic
= false;
2148 /* For atomic drivers only state objects are synchronously updated and
2149 * protected by modeset locks, so check those first. */
2150 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
2151 if (!connector
->state
)
2156 if (connector
->state
->best_encoder
!= encoder
)
2159 return connector
->state
->crtc
;
2162 /* Don't return stale data (e.g. pending async disable). */
2166 return encoder
->crtc
;
2170 * drm_mode_getencoder - get encoder configuration
2171 * @dev: drm device for the ioctl
2172 * @data: data pointer for the ioctl
2173 * @file_priv: drm file for the ioctl call
2175 * Construct a encoder configuration structure to return to the user.
2177 * Called by the user via ioctl.
2180 * Zero on success, negative errno on failure.
2182 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2183 struct drm_file
*file_priv
)
2185 struct drm_mode_get_encoder
*enc_resp
= data
;
2186 struct drm_encoder
*encoder
;
2187 struct drm_crtc
*crtc
;
2189 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2192 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2196 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2197 crtc
= drm_encoder_get_crtc(encoder
);
2199 enc_resp
->crtc_id
= crtc
->base
.id
;
2200 else if (encoder
->crtc
)
2201 enc_resp
->crtc_id
= encoder
->crtc
->base
.id
;
2203 enc_resp
->crtc_id
= 0;
2204 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2206 enc_resp
->encoder_type
= encoder
->encoder_type
;
2207 enc_resp
->encoder_id
= encoder
->base
.id
;
2208 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2209 enc_resp
->possible_clones
= encoder
->possible_clones
;
2215 * drm_mode_getplane_res - enumerate all plane resources
2218 * @file_priv: DRM file info
2220 * Construct a list of plane ids to return to the user.
2222 * Called by the user via ioctl.
2225 * Zero on success, negative errno on failure.
2227 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2228 struct drm_file
*file_priv
)
2230 struct drm_mode_get_plane_res
*plane_resp
= data
;
2231 struct drm_mode_config
*config
;
2232 struct drm_plane
*plane
;
2233 uint32_t __user
*plane_ptr
;
2235 unsigned num_planes
;
2237 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2240 config
= &dev
->mode_config
;
2242 if (file_priv
->universal_planes
)
2243 num_planes
= config
->num_total_plane
;
2245 num_planes
= config
->num_overlay_plane
;
2248 * This ioctl is called twice, once to determine how much space is
2249 * needed, and the 2nd time to fill it.
2252 (plane_resp
->count_planes
>= num_planes
)) {
2253 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2255 /* Plane lists are invariant, no locking needed. */
2256 list_for_each_entry(plane
, &config
->plane_list
, head
) {
2258 * Unless userspace set the 'universal planes'
2259 * capability bit, only advertise overlays.
2261 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2262 !file_priv
->universal_planes
)
2265 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2270 plane_resp
->count_planes
= num_planes
;
2276 * drm_mode_getplane - get plane configuration
2279 * @file_priv: DRM file info
2281 * Construct a plane configuration structure to return to the user.
2283 * Called by the user via ioctl.
2286 * Zero on success, negative errno on failure.
2288 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2289 struct drm_file
*file_priv
)
2291 struct drm_mode_get_plane
*plane_resp
= data
;
2292 struct drm_plane
*plane
;
2293 uint32_t __user
*format_ptr
;
2295 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2298 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2302 drm_modeset_lock(&plane
->mutex
, NULL
);
2304 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2306 plane_resp
->crtc_id
= 0;
2309 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2311 plane_resp
->fb_id
= 0;
2312 drm_modeset_unlock(&plane
->mutex
);
2314 plane_resp
->plane_id
= plane
->base
.id
;
2315 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2316 plane_resp
->gamma_size
= 0;
2319 * This ioctl is called twice, once to determine how much space is
2320 * needed, and the 2nd time to fill it.
2322 if (plane
->format_count
&&
2323 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2324 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2325 if (copy_to_user(format_ptr
,
2326 plane
->format_types
,
2327 sizeof(uint32_t) * plane
->format_count
)) {
2331 plane_resp
->count_format_types
= plane
->format_count
;
2337 * setplane_internal - setplane handler for internal callers
2339 * Note that we assume an extra reference has already been taken on fb. If the
2340 * update fails, this reference will be dropped before return; if it succeeds,
2341 * the previous framebuffer (if any) will be unreferenced instead.
2343 * src_{x,y,w,h} are provided in 16.16 fixed point format
2345 static int __setplane_internal(struct drm_plane
*plane
,
2346 struct drm_crtc
*crtc
,
2347 struct drm_framebuffer
*fb
,
2348 int32_t crtc_x
, int32_t crtc_y
,
2349 uint32_t crtc_w
, uint32_t crtc_h
,
2350 /* src_{x,y,w,h} values are 16.16 fixed point */
2351 uint32_t src_x
, uint32_t src_y
,
2352 uint32_t src_w
, uint32_t src_h
)
2355 unsigned int fb_width
, fb_height
;
2358 /* No fb means shut it down */
2360 plane
->old_fb
= plane
->fb
;
2361 ret
= plane
->funcs
->disable_plane(plane
);
2366 plane
->old_fb
= NULL
;
2371 /* Check whether this plane is usable on this CRTC */
2372 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2373 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2378 /* Check whether this plane supports the fb pixel format. */
2379 for (i
= 0; i
< plane
->format_count
; i
++)
2380 if (fb
->pixel_format
== plane
->format_types
[i
])
2382 if (i
== plane
->format_count
) {
2383 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2384 drm_get_format_name(fb
->pixel_format
));
2389 fb_width
= fb
->width
<< 16;
2390 fb_height
= fb
->height
<< 16;
2392 /* Make sure source coordinates are inside the fb. */
2393 if (src_w
> fb_width
||
2394 src_x
> fb_width
- src_w
||
2395 src_h
> fb_height
||
2396 src_y
> fb_height
- src_h
) {
2397 DRM_DEBUG_KMS("Invalid source coordinates "
2398 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2399 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2400 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2401 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2402 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2407 plane
->old_fb
= plane
->fb
;
2408 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2409 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2410 src_x
, src_y
, src_w
, src_h
);
2416 plane
->old_fb
= NULL
;
2421 drm_framebuffer_unreference(fb
);
2423 drm_framebuffer_unreference(plane
->old_fb
);
2424 plane
->old_fb
= NULL
;
2429 static int setplane_internal(struct drm_plane
*plane
,
2430 struct drm_crtc
*crtc
,
2431 struct drm_framebuffer
*fb
,
2432 int32_t crtc_x
, int32_t crtc_y
,
2433 uint32_t crtc_w
, uint32_t crtc_h
,
2434 /* src_{x,y,w,h} values are 16.16 fixed point */
2435 uint32_t src_x
, uint32_t src_y
,
2436 uint32_t src_w
, uint32_t src_h
)
2440 drm_modeset_lock_all(plane
->dev
);
2441 ret
= __setplane_internal(plane
, crtc
, fb
,
2442 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2443 src_x
, src_y
, src_w
, src_h
);
2444 drm_modeset_unlock_all(plane
->dev
);
2450 * drm_mode_setplane - configure a plane's configuration
2452 * @data: ioctl data*
2453 * @file_priv: DRM file info
2455 * Set plane configuration, including placement, fb, scaling, and other factors.
2456 * Or pass a NULL fb to disable (planes may be disabled without providing a
2460 * Zero on success, negative errno on failure.
2462 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2463 struct drm_file
*file_priv
)
2465 struct drm_mode_set_plane
*plane_req
= data
;
2466 struct drm_plane
*plane
;
2467 struct drm_crtc
*crtc
= NULL
;
2468 struct drm_framebuffer
*fb
= NULL
;
2470 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2473 /* Give drivers some help against integer overflows */
2474 if (plane_req
->crtc_w
> INT_MAX
||
2475 plane_req
->crtc_x
> INT_MAX
- (int32_t) plane_req
->crtc_w
||
2476 plane_req
->crtc_h
> INT_MAX
||
2477 plane_req
->crtc_y
> INT_MAX
- (int32_t) plane_req
->crtc_h
) {
2478 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2479 plane_req
->crtc_w
, plane_req
->crtc_h
,
2480 plane_req
->crtc_x
, plane_req
->crtc_y
);
2485 * First, find the plane, crtc, and fb objects. If not available,
2486 * we don't bother to call the driver.
2488 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
2490 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2491 plane_req
->plane_id
);
2495 if (plane_req
->fb_id
) {
2496 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2498 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2503 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
2505 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2506 plane_req
->crtc_id
);
2512 * setplane_internal will take care of deref'ing either the old or new
2513 * framebuffer depending on success.
2515 return setplane_internal(plane
, crtc
, fb
,
2516 plane_req
->crtc_x
, plane_req
->crtc_y
,
2517 plane_req
->crtc_w
, plane_req
->crtc_h
,
2518 plane_req
->src_x
, plane_req
->src_y
,
2519 plane_req
->src_w
, plane_req
->src_h
);
2523 * drm_mode_set_config_internal - helper to call ->set_config
2524 * @set: modeset config to set
2526 * This is a little helper to wrap internal calls to the ->set_config driver
2527 * interface. The only thing it adds is correct refcounting dance.
2530 * Zero on success, negative errno on failure.
2532 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2534 struct drm_crtc
*crtc
= set
->crtc
;
2535 struct drm_framebuffer
*fb
;
2536 struct drm_crtc
*tmp
;
2540 * NOTE: ->set_config can also disable other crtcs (if we steal all
2541 * connectors from it), hence we need to refcount the fbs across all
2542 * crtcs. Atomic modeset will have saner semantics ...
2544 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
)
2545 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2549 ret
= crtc
->funcs
->set_config(set
);
2551 crtc
->primary
->crtc
= crtc
;
2552 crtc
->primary
->fb
= fb
;
2555 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
2556 if (tmp
->primary
->fb
)
2557 drm_framebuffer_reference(tmp
->primary
->fb
);
2558 if (tmp
->primary
->old_fb
)
2559 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2560 tmp
->primary
->old_fb
= NULL
;
2565 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2568 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2570 * @crtc: CRTC that framebuffer will be displayed on
2573 * @mode: mode that framebuffer will be displayed under
2574 * @fb: framebuffer to check size of
2576 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2578 const struct drm_display_mode
*mode
,
2579 const struct drm_framebuffer
*fb
)
2582 int hdisplay
, vdisplay
;
2584 hdisplay
= mode
->hdisplay
;
2585 vdisplay
= mode
->vdisplay
;
2587 if (drm_mode_is_stereo(mode
)) {
2588 struct drm_display_mode adjusted
= *mode
;
2590 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE
);
2591 hdisplay
= adjusted
.crtc_hdisplay
;
2592 vdisplay
= adjusted
.crtc_vdisplay
;
2595 if (crtc
->invert_dimensions
)
2596 swap(hdisplay
, vdisplay
);
2598 if (hdisplay
> fb
->width
||
2599 vdisplay
> fb
->height
||
2600 x
> fb
->width
- hdisplay
||
2601 y
> fb
->height
- vdisplay
) {
2602 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2603 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2604 crtc
->invert_dimensions
? " (inverted)" : "");
2610 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2613 * drm_mode_setcrtc - set CRTC configuration
2614 * @dev: drm device for the ioctl
2615 * @data: data pointer for the ioctl
2616 * @file_priv: drm file for the ioctl call
2618 * Build a new CRTC configuration based on user request.
2620 * Called by the user via ioctl.
2623 * Zero on success, negative errno on failure.
2625 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2626 struct drm_file
*file_priv
)
2628 struct drm_mode_config
*config
= &dev
->mode_config
;
2629 struct drm_mode_crtc
*crtc_req
= data
;
2630 struct drm_crtc
*crtc
;
2631 struct drm_connector
**connector_set
= NULL
, *connector
;
2632 struct drm_framebuffer
*fb
= NULL
;
2633 struct drm_display_mode
*mode
= NULL
;
2634 struct drm_mode_set set
;
2635 uint32_t __user
*set_connectors_ptr
;
2639 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2642 /* For some reason crtc x/y offsets are signed internally. */
2643 if (crtc_req
->x
> INT_MAX
|| crtc_req
->y
> INT_MAX
)
2646 drm_modeset_lock_all(dev
);
2647 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2649 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2653 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2655 if (crtc_req
->mode_valid
) {
2656 /* If we have a mode we need a framebuffer. */
2657 /* If we pass -1, set the mode with the currently bound fb */
2658 if (crtc_req
->fb_id
== -1) {
2659 if (!crtc
->primary
->fb
) {
2660 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2664 fb
= crtc
->primary
->fb
;
2665 /* Make refcounting symmetric with the lookup path. */
2666 drm_framebuffer_reference(fb
);
2668 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2670 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2677 mode
= drm_mode_create(dev
);
2683 ret
= drm_crtc_convert_umode(mode
, &crtc_req
->mode
);
2685 DRM_DEBUG_KMS("Invalid mode\n");
2689 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2691 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2698 if (crtc_req
->count_connectors
== 0 && mode
) {
2699 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2704 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2705 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2706 crtc_req
->count_connectors
);
2711 if (crtc_req
->count_connectors
> 0) {
2714 /* Avoid unbounded kernel memory allocation */
2715 if (crtc_req
->count_connectors
> config
->num_connector
) {
2720 connector_set
= kmalloc_array(crtc_req
->count_connectors
,
2721 sizeof(struct drm_connector
*),
2723 if (!connector_set
) {
2728 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2729 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2730 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2735 connector
= drm_connector_find(dev
, out_id
);
2737 DRM_DEBUG_KMS("Connector id %d unknown\n",
2742 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2746 connector_set
[i
] = connector
;
2751 set
.x
= crtc_req
->x
;
2752 set
.y
= crtc_req
->y
;
2754 set
.connectors
= connector_set
;
2755 set
.num_connectors
= crtc_req
->count_connectors
;
2757 ret
= drm_mode_set_config_internal(&set
);
2761 drm_framebuffer_unreference(fb
);
2763 kfree(connector_set
);
2764 drm_mode_destroy(dev
, mode
);
2765 drm_modeset_unlock_all(dev
);
2770 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2771 * universal plane handler call
2772 * @crtc: crtc to update cursor for
2773 * @req: data pointer for the ioctl
2774 * @file_priv: drm file for the ioctl call
2776 * Legacy cursor ioctl's work directly with driver buffer handles. To
2777 * translate legacy ioctl calls into universal plane handler calls, we need to
2778 * wrap the native buffer handle in a drm_framebuffer.
2780 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2781 * buffer with a pitch of 4*width; the universal plane interface should be used
2782 * directly in cases where the hardware can support other buffer settings and
2783 * userspace wants to make use of these capabilities.
2786 * Zero on success, negative errno on failure.
2788 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2789 struct drm_mode_cursor2
*req
,
2790 struct drm_file
*file_priv
)
2792 struct drm_device
*dev
= crtc
->dev
;
2793 struct drm_framebuffer
*fb
= NULL
;
2794 struct drm_mode_fb_cmd2 fbreq
= {
2795 .width
= req
->width
,
2796 .height
= req
->height
,
2797 .pixel_format
= DRM_FORMAT_ARGB8888
,
2798 .pitches
= { req
->width
* 4 },
2799 .handles
= { req
->handle
},
2801 int32_t crtc_x
, crtc_y
;
2802 uint32_t crtc_w
= 0, crtc_h
= 0;
2803 uint32_t src_w
= 0, src_h
= 0;
2806 BUG_ON(!crtc
->cursor
);
2807 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2810 * Obtain fb we'll be using (either new or existing) and take an extra
2811 * reference to it if fb != null. setplane will take care of dropping
2812 * the reference if the plane update fails.
2814 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2816 fb
= add_framebuffer_internal(dev
, &fbreq
, file_priv
);
2818 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2822 drm_framebuffer_reference(fb
);
2827 fb
= crtc
->cursor
->fb
;
2829 drm_framebuffer_reference(fb
);
2832 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2836 crtc_x
= crtc
->cursor_x
;
2837 crtc_y
= crtc
->cursor_y
;
2842 crtc_h
= fb
->height
;
2843 src_w
= fb
->width
<< 16;
2844 src_h
= fb
->height
<< 16;
2848 * setplane_internal will take care of deref'ing either the old or new
2849 * framebuffer depending on success.
2851 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2852 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2853 0, 0, src_w
, src_h
);
2855 /* Update successful; save new cursor position, if necessary */
2856 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2857 crtc
->cursor_x
= req
->x
;
2858 crtc
->cursor_y
= req
->y
;
2864 static int drm_mode_cursor_common(struct drm_device
*dev
,
2865 struct drm_mode_cursor2
*req
,
2866 struct drm_file
*file_priv
)
2868 struct drm_crtc
*crtc
;
2871 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2874 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2877 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2879 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2884 * If this crtc has a universal cursor plane, call that plane's update
2885 * handler rather than using legacy cursor handlers.
2887 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
2889 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2893 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2894 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2898 /* Turns off the cursor if handle is 0 */
2899 if (crtc
->funcs
->cursor_set2
)
2900 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2901 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2903 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2904 req
->width
, req
->height
);
2907 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2908 if (crtc
->funcs
->cursor_move
) {
2909 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
2916 drm_modeset_unlock_crtc(crtc
);
2924 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2925 * @dev: drm device for the ioctl
2926 * @data: data pointer for the ioctl
2927 * @file_priv: drm file for the ioctl call
2929 * Set the cursor configuration based on user request.
2931 * Called by the user via ioctl.
2934 * Zero on success, negative errno on failure.
2936 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
2937 void *data
, struct drm_file
*file_priv
)
2939 struct drm_mode_cursor
*req
= data
;
2940 struct drm_mode_cursor2 new_req
;
2942 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
2943 new_req
.hot_x
= new_req
.hot_y
= 0;
2945 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
2949 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2950 * @dev: drm device for the ioctl
2951 * @data: data pointer for the ioctl
2952 * @file_priv: drm file for the ioctl call
2954 * Set the cursor configuration based on user request. This implements the 2nd
2955 * version of the cursor ioctl, which allows userspace to additionally specify
2956 * the hotspot of the pointer.
2958 * Called by the user via ioctl.
2961 * Zero on success, negative errno on failure.
2963 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
2964 void *data
, struct drm_file
*file_priv
)
2966 struct drm_mode_cursor2
*req
= data
;
2968 return drm_mode_cursor_common(dev
, req
, file_priv
);
2972 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2973 * @bpp: bits per pixels
2974 * @depth: bit depth per pixel
2976 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2977 * Useful in fbdev emulation code, since that deals in those values.
2979 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
2985 fmt
= DRM_FORMAT_C8
;
2989 fmt
= DRM_FORMAT_XRGB1555
;
2991 fmt
= DRM_FORMAT_RGB565
;
2994 fmt
= DRM_FORMAT_RGB888
;
2998 fmt
= DRM_FORMAT_XRGB8888
;
2999 else if (depth
== 30)
3000 fmt
= DRM_FORMAT_XRGB2101010
;
3002 fmt
= DRM_FORMAT_ARGB8888
;
3005 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3006 fmt
= DRM_FORMAT_XRGB8888
;
3012 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
3015 * drm_mode_addfb - add an FB to the graphics configuration
3016 * @dev: drm device for the ioctl
3017 * @data: data pointer for the ioctl
3018 * @file_priv: drm file for the ioctl call
3020 * Add a new FB to the specified CRTC, given a user request. This is the
3021 * original addfb ioctl which only supported RGB formats.
3023 * Called by the user via ioctl.
3026 * Zero on success, negative errno on failure.
3028 int drm_mode_addfb(struct drm_device
*dev
,
3029 void *data
, struct drm_file
*file_priv
)
3031 struct drm_mode_fb_cmd
*or = data
;
3032 struct drm_mode_fb_cmd2 r
= {};
3035 /* convert to new format and call new ioctl */
3036 r
.fb_id
= or->fb_id
;
3037 r
.width
= or->width
;
3038 r
.height
= or->height
;
3039 r
.pitches
[0] = or->pitch
;
3040 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
3041 r
.handles
[0] = or->handle
;
3043 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
3047 or->fb_id
= r
.fb_id
;
3052 static int format_check(const struct drm_mode_fb_cmd2
*r
)
3054 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3058 case DRM_FORMAT_RGB332
:
3059 case DRM_FORMAT_BGR233
:
3060 case DRM_FORMAT_XRGB4444
:
3061 case DRM_FORMAT_XBGR4444
:
3062 case DRM_FORMAT_RGBX4444
:
3063 case DRM_FORMAT_BGRX4444
:
3064 case DRM_FORMAT_ARGB4444
:
3065 case DRM_FORMAT_ABGR4444
:
3066 case DRM_FORMAT_RGBA4444
:
3067 case DRM_FORMAT_BGRA4444
:
3068 case DRM_FORMAT_XRGB1555
:
3069 case DRM_FORMAT_XBGR1555
:
3070 case DRM_FORMAT_RGBX5551
:
3071 case DRM_FORMAT_BGRX5551
:
3072 case DRM_FORMAT_ARGB1555
:
3073 case DRM_FORMAT_ABGR1555
:
3074 case DRM_FORMAT_RGBA5551
:
3075 case DRM_FORMAT_BGRA5551
:
3076 case DRM_FORMAT_RGB565
:
3077 case DRM_FORMAT_BGR565
:
3078 case DRM_FORMAT_RGB888
:
3079 case DRM_FORMAT_BGR888
:
3080 case DRM_FORMAT_XRGB8888
:
3081 case DRM_FORMAT_XBGR8888
:
3082 case DRM_FORMAT_RGBX8888
:
3083 case DRM_FORMAT_BGRX8888
:
3084 case DRM_FORMAT_ARGB8888
:
3085 case DRM_FORMAT_ABGR8888
:
3086 case DRM_FORMAT_RGBA8888
:
3087 case DRM_FORMAT_BGRA8888
:
3088 case DRM_FORMAT_XRGB2101010
:
3089 case DRM_FORMAT_XBGR2101010
:
3090 case DRM_FORMAT_RGBX1010102
:
3091 case DRM_FORMAT_BGRX1010102
:
3092 case DRM_FORMAT_ARGB2101010
:
3093 case DRM_FORMAT_ABGR2101010
:
3094 case DRM_FORMAT_RGBA1010102
:
3095 case DRM_FORMAT_BGRA1010102
:
3096 case DRM_FORMAT_YUYV
:
3097 case DRM_FORMAT_YVYU
:
3098 case DRM_FORMAT_UYVY
:
3099 case DRM_FORMAT_VYUY
:
3100 case DRM_FORMAT_AYUV
:
3101 case DRM_FORMAT_NV12
:
3102 case DRM_FORMAT_NV21
:
3103 case DRM_FORMAT_NV16
:
3104 case DRM_FORMAT_NV61
:
3105 case DRM_FORMAT_NV24
:
3106 case DRM_FORMAT_NV42
:
3107 case DRM_FORMAT_YUV410
:
3108 case DRM_FORMAT_YVU410
:
3109 case DRM_FORMAT_YUV411
:
3110 case DRM_FORMAT_YVU411
:
3111 case DRM_FORMAT_YUV420
:
3112 case DRM_FORMAT_YVU420
:
3113 case DRM_FORMAT_YUV422
:
3114 case DRM_FORMAT_YVU422
:
3115 case DRM_FORMAT_YUV444
:
3116 case DRM_FORMAT_YVU444
:
3119 DRM_DEBUG_KMS("invalid pixel format %s\n",
3120 drm_get_format_name(r
->pixel_format
));
3125 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3127 int ret
, hsub
, vsub
, num_planes
, i
;
3129 ret
= format_check(r
);
3131 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3132 drm_get_format_name(r
->pixel_format
));
3136 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3137 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3138 num_planes
= drm_format_num_planes(r
->pixel_format
);
3140 if (r
->width
== 0 || r
->width
% hsub
) {
3141 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3145 if (r
->height
== 0 || r
->height
% vsub
) {
3146 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3150 for (i
= 0; i
< num_planes
; i
++) {
3151 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3152 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3153 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3155 if (!r
->handles
[i
]) {
3156 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3160 if ((uint64_t) width
* cpp
> UINT_MAX
)
3163 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3166 if (r
->pitches
[i
] < width
* cpp
) {
3167 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3175 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
3176 struct drm_mode_fb_cmd2
*r
,
3177 struct drm_file
*file_priv
)
3179 struct drm_mode_config
*config
= &dev
->mode_config
;
3180 struct drm_framebuffer
*fb
;
3183 if (r
->flags
& ~DRM_MODE_FB_INTERLACED
) {
3184 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3185 return ERR_PTR(-EINVAL
);
3188 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3189 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3190 r
->width
, config
->min_width
, config
->max_width
);
3191 return ERR_PTR(-EINVAL
);
3193 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3194 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3195 r
->height
, config
->min_height
, config
->max_height
);
3196 return ERR_PTR(-EINVAL
);
3199 ret
= framebuffer_check(r
);
3201 return ERR_PTR(ret
);
3203 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3205 DRM_DEBUG_KMS("could not create framebuffer\n");
3209 mutex_lock(&file_priv
->fbs_lock
);
3210 r
->fb_id
= fb
->base
.id
;
3211 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3212 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3213 mutex_unlock(&file_priv
->fbs_lock
);
3219 * drm_mode_addfb2 - add an FB to the graphics configuration
3220 * @dev: drm device for the ioctl
3221 * @data: data pointer for the ioctl
3222 * @file_priv: drm file for the ioctl call
3224 * Add a new FB to the specified CRTC, given a user request with format. This is
3225 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3226 * and uses fourcc codes as pixel format specifiers.
3228 * Called by the user via ioctl.
3231 * Zero on success, negative errno on failure.
3233 int drm_mode_addfb2(struct drm_device
*dev
,
3234 void *data
, struct drm_file
*file_priv
)
3236 struct drm_framebuffer
*fb
;
3238 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3241 fb
= add_framebuffer_internal(dev
, data
, file_priv
);
3249 * drm_mode_rmfb - remove an FB from the configuration
3250 * @dev: drm device for the ioctl
3251 * @data: data pointer for the ioctl
3252 * @file_priv: drm file for the ioctl call
3254 * Remove the FB specified by the user.
3256 * Called by the user via ioctl.
3259 * Zero on success, negative errno on failure.
3261 int drm_mode_rmfb(struct drm_device
*dev
,
3262 void *data
, struct drm_file
*file_priv
)
3264 struct drm_framebuffer
*fb
= NULL
;
3265 struct drm_framebuffer
*fbl
= NULL
;
3266 uint32_t *id
= data
;
3269 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3272 mutex_lock(&file_priv
->fbs_lock
);
3273 mutex_lock(&dev
->mode_config
.fb_lock
);
3274 fb
= __drm_framebuffer_lookup(dev
, *id
);
3278 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3284 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3285 __drm_framebuffer_unregister(dev
, fb
);
3287 list_del_init(&fb
->filp_head
);
3288 mutex_unlock(&dev
->mode_config
.fb_lock
);
3289 mutex_unlock(&file_priv
->fbs_lock
);
3291 drm_framebuffer_remove(fb
);
3296 mutex_unlock(&dev
->mode_config
.fb_lock
);
3297 mutex_unlock(&file_priv
->fbs_lock
);
3303 * drm_mode_getfb - get FB info
3304 * @dev: drm device for the ioctl
3305 * @data: data pointer for the ioctl
3306 * @file_priv: drm file for the ioctl call
3308 * Lookup the FB given its ID and return info about it.
3310 * Called by the user via ioctl.
3313 * Zero on success, negative errno on failure.
3315 int drm_mode_getfb(struct drm_device
*dev
,
3316 void *data
, struct drm_file
*file_priv
)
3318 struct drm_mode_fb_cmd
*r
= data
;
3319 struct drm_framebuffer
*fb
;
3322 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3325 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3329 r
->height
= fb
->height
;
3330 r
->width
= fb
->width
;
3331 r
->depth
= fb
->depth
;
3332 r
->bpp
= fb
->bits_per_pixel
;
3333 r
->pitch
= fb
->pitches
[0];
3334 if (fb
->funcs
->create_handle
) {
3335 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3336 drm_is_control_client(file_priv
)) {
3337 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3340 /* GET_FB() is an unprivileged ioctl so we must not
3341 * return a buffer-handle to non-master processes! For
3342 * backwards-compatibility reasons, we cannot make
3343 * GET_FB() privileged, so just return an invalid handle
3344 * for non-masters. */
3352 drm_framebuffer_unreference(fb
);
3358 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3359 * @dev: drm device for the ioctl
3360 * @data: data pointer for the ioctl
3361 * @file_priv: drm file for the ioctl call
3363 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3364 * rectangle list. Generic userspace which does frontbuffer rendering must call
3365 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3366 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3368 * Modesetting drivers which always update the frontbuffer do not need to
3369 * implement the corresponding ->dirty framebuffer callback.
3371 * Called by the user via ioctl.
3374 * Zero on success, negative errno on failure.
3376 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3377 void *data
, struct drm_file
*file_priv
)
3379 struct drm_clip_rect __user
*clips_ptr
;
3380 struct drm_clip_rect
*clips
= NULL
;
3381 struct drm_mode_fb_dirty_cmd
*r
= data
;
3382 struct drm_framebuffer
*fb
;
3387 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3390 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3394 num_clips
= r
->num_clips
;
3395 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3397 if (!num_clips
!= !clips_ptr
) {
3402 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3404 /* If userspace annotates copy, clips must come in pairs */
3405 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3410 if (num_clips
&& clips_ptr
) {
3411 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3415 clips
= kcalloc(num_clips
, sizeof(*clips
), GFP_KERNEL
);
3421 ret
= copy_from_user(clips
, clips_ptr
,
3422 num_clips
* sizeof(*clips
));
3429 if (fb
->funcs
->dirty
) {
3430 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3439 drm_framebuffer_unreference(fb
);
3446 * drm_fb_release - remove and free the FBs on this file
3447 * @priv: drm file for the ioctl
3449 * Destroy all the FBs associated with @filp.
3451 * Called by the user via ioctl.
3454 * Zero on success, negative errno on failure.
3456 void drm_fb_release(struct drm_file
*priv
)
3458 struct drm_device
*dev
= priv
->minor
->dev
;
3459 struct drm_framebuffer
*fb
, *tfb
;
3462 * When the file gets released that means no one else can access the fb
3463 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3464 * avoid upsetting lockdep since the universal cursor code adds a
3465 * framebuffer while holding mutex locks.
3467 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3468 * locks is impossible here since no one else but this function can get
3471 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3473 mutex_lock(&dev
->mode_config
.fb_lock
);
3474 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3475 __drm_framebuffer_unregister(dev
, fb
);
3476 mutex_unlock(&dev
->mode_config
.fb_lock
);
3478 list_del_init(&fb
->filp_head
);
3480 /* This will also drop the fpriv->fbs reference. */
3481 drm_framebuffer_remove(fb
);
3486 * drm_property_create - create a new property type
3488 * @flags: flags specifying the property type
3489 * @name: name of the property
3490 * @num_values: number of pre-defined values
3492 * This creates a new generic drm property which can then be attached to a drm
3493 * object with drm_object_attach_property. The returned property object must be
3494 * freed with drm_property_destroy.
3496 * Note that the DRM core keeps a per-device list of properties and that, if
3497 * drm_mode_config_cleanup() is called, it will destroy all properties created
3501 * A pointer to the newly created property on success, NULL on failure.
3503 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3504 const char *name
, int num_values
)
3506 struct drm_property
*property
= NULL
;
3509 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3513 property
->dev
= dev
;
3516 property
->values
= kcalloc(num_values
, sizeof(uint64_t),
3518 if (!property
->values
)
3522 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3526 property
->flags
= flags
;
3527 property
->num_values
= num_values
;
3528 INIT_LIST_HEAD(&property
->enum_list
);
3531 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3532 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3535 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3537 WARN_ON(!drm_property_type_valid(property
));
3541 kfree(property
->values
);
3545 EXPORT_SYMBOL(drm_property_create
);
3548 * drm_property_create_enum - create a new enumeration property type
3550 * @flags: flags specifying the property type
3551 * @name: name of the property
3552 * @props: enumeration lists with property values
3553 * @num_values: number of pre-defined values
3555 * This creates a new generic drm property which can then be attached to a drm
3556 * object with drm_object_attach_property. The returned property object must be
3557 * freed with drm_property_destroy.
3559 * Userspace is only allowed to set one of the predefined values for enumeration
3563 * A pointer to the newly created property on success, NULL on failure.
3565 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3567 const struct drm_prop_enum_list
*props
,
3570 struct drm_property
*property
;
3573 flags
|= DRM_MODE_PROP_ENUM
;
3575 property
= drm_property_create(dev
, flags
, name
, num_values
);
3579 for (i
= 0; i
< num_values
; i
++) {
3580 ret
= drm_property_add_enum(property
, i
,
3584 drm_property_destroy(dev
, property
);
3591 EXPORT_SYMBOL(drm_property_create_enum
);
3594 * drm_property_create_bitmask - create a new bitmask property type
3596 * @flags: flags specifying the property type
3597 * @name: name of the property
3598 * @props: enumeration lists with property bitflags
3599 * @num_props: size of the @props array
3600 * @supported_bits: bitmask of all supported enumeration values
3602 * This creates a new bitmask drm property which can then be attached to a drm
3603 * object with drm_object_attach_property. The returned property object must be
3604 * freed with drm_property_destroy.
3606 * Compared to plain enumeration properties userspace is allowed to set any
3607 * or'ed together combination of the predefined property bitflag values
3610 * A pointer to the newly created property on success, NULL on failure.
3612 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3613 int flags
, const char *name
,
3614 const struct drm_prop_enum_list
*props
,
3616 uint64_t supported_bits
)
3618 struct drm_property
*property
;
3619 int i
, ret
, index
= 0;
3620 int num_values
= hweight64(supported_bits
);
3622 flags
|= DRM_MODE_PROP_BITMASK
;
3624 property
= drm_property_create(dev
, flags
, name
, num_values
);
3627 for (i
= 0; i
< num_props
; i
++) {
3628 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3631 if (WARN_ON(index
>= num_values
)) {
3632 drm_property_destroy(dev
, property
);
3636 ret
= drm_property_add_enum(property
, index
++,
3640 drm_property_destroy(dev
, property
);
3647 EXPORT_SYMBOL(drm_property_create_bitmask
);
3649 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3650 int flags
, const char *name
,
3651 uint64_t min
, uint64_t max
)
3653 struct drm_property
*property
;
3655 property
= drm_property_create(dev
, flags
, name
, 2);
3659 property
->values
[0] = min
;
3660 property
->values
[1] = max
;
3666 * drm_property_create_range - create a new ranged property type
3668 * @flags: flags specifying the property type
3669 * @name: name of the property
3670 * @min: minimum value of the property
3671 * @max: maximum value of the property
3673 * This creates a new generic drm property which can then be attached to a drm
3674 * object with drm_object_attach_property. The returned property object must be
3675 * freed with drm_property_destroy.
3677 * Userspace is allowed to set any integer value in the (min, max) range
3681 * A pointer to the newly created property on success, NULL on failure.
3683 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3685 uint64_t min
, uint64_t max
)
3687 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3690 EXPORT_SYMBOL(drm_property_create_range
);
3692 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3693 int flags
, const char *name
,
3694 int64_t min
, int64_t max
)
3696 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3697 name
, I642U64(min
), I642U64(max
));
3699 EXPORT_SYMBOL(drm_property_create_signed_range
);
3701 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3702 int flags
, const char *name
, uint32_t type
)
3704 struct drm_property
*property
;
3706 flags
|= DRM_MODE_PROP_OBJECT
;
3708 property
= drm_property_create(dev
, flags
, name
, 1);
3712 property
->values
[0] = type
;
3716 EXPORT_SYMBOL(drm_property_create_object
);
3719 * drm_property_add_enum - add a possible value to an enumeration property
3720 * @property: enumeration property to change
3721 * @index: index of the new enumeration
3722 * @value: value of the new enumeration
3723 * @name: symbolic name of the new enumeration
3725 * This functions adds enumerations to a property.
3727 * It's use is deprecated, drivers should use one of the more specific helpers
3728 * to directly create the property with all enumerations already attached.
3731 * Zero on success, error code on failure.
3733 int drm_property_add_enum(struct drm_property
*property
, int index
,
3734 uint64_t value
, const char *name
)
3736 struct drm_property_enum
*prop_enum
;
3738 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3739 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3743 * Bitmask enum properties have the additional constraint of values
3746 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3750 if (!list_empty(&property
->enum_list
)) {
3751 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3752 if (prop_enum
->value
== value
) {
3753 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3754 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3760 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3764 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3765 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3766 prop_enum
->value
= value
;
3768 property
->values
[index
] = value
;
3769 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
3772 EXPORT_SYMBOL(drm_property_add_enum
);
3775 * drm_property_destroy - destroy a drm property
3777 * @property: property to destry
3779 * This function frees a property including any attached resources like
3780 * enumeration values.
3782 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3784 struct drm_property_enum
*prop_enum
, *pt
;
3786 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
3787 list_del(&prop_enum
->head
);
3791 if (property
->num_values
)
3792 kfree(property
->values
);
3793 drm_mode_object_put(dev
, &property
->base
);
3794 list_del(&property
->head
);
3797 EXPORT_SYMBOL(drm_property_destroy
);
3800 * drm_object_attach_property - attach a property to a modeset object
3801 * @obj: drm modeset object
3802 * @property: property to attach
3803 * @init_val: initial value of the property
3805 * This attaches the given property to the modeset object with the given initial
3806 * value. Currently this function cannot fail since the properties are stored in
3807 * a statically sized array.
3809 void drm_object_attach_property(struct drm_mode_object
*obj
,
3810 struct drm_property
*property
,
3813 int count
= obj
->properties
->count
;
3815 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3816 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3817 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3818 "you see this message on the same object type.\n",
3823 obj
->properties
->properties
[count
] = property
;
3824 obj
->properties
->values
[count
] = init_val
;
3825 obj
->properties
->count
++;
3827 EXPORT_SYMBOL(drm_object_attach_property
);
3830 * drm_object_property_set_value - set the value of a property
3831 * @obj: drm mode object to set property value for
3832 * @property: property to set
3833 * @val: value the property should be set to
3835 * This functions sets a given property on a given object. This function only
3836 * changes the software state of the property, it does not call into the
3837 * driver's ->set_property callback.
3840 * Zero on success, error code on failure.
3842 int drm_object_property_set_value(struct drm_mode_object
*obj
,
3843 struct drm_property
*property
, uint64_t val
)
3847 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3848 if (obj
->properties
->properties
[i
] == property
) {
3849 obj
->properties
->values
[i
] = val
;
3856 EXPORT_SYMBOL(drm_object_property_set_value
);
3859 * drm_object_property_get_value - retrieve the value of a property
3860 * @obj: drm mode object to get property value from
3861 * @property: property to retrieve
3862 * @val: storage for the property value
3864 * This function retrieves the softare state of the given property for the given
3865 * property. Since there is no driver callback to retrieve the current property
3866 * value this might be out of sync with the hardware, depending upon the driver
3870 * Zero on success, error code on failure.
3872 int drm_object_property_get_value(struct drm_mode_object
*obj
,
3873 struct drm_property
*property
, uint64_t *val
)
3877 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3878 if (obj
->properties
->properties
[i
] == property
) {
3879 *val
= obj
->properties
->values
[i
];
3886 EXPORT_SYMBOL(drm_object_property_get_value
);
3889 * drm_mode_getproperty_ioctl - get the property metadata
3892 * @file_priv: DRM file info
3894 * This function retrieves the metadata for a given property, like the different
3895 * possible values for an enum property or the limits for a range property.
3897 * Blob properties are special
3899 * Called by the user via ioctl.
3902 * Zero on success, negative errno on failure.
3904 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
3905 void *data
, struct drm_file
*file_priv
)
3907 struct drm_mode_get_property
*out_resp
= data
;
3908 struct drm_property
*property
;
3910 int value_count
= 0;
3913 struct drm_property_enum
*prop_enum
;
3914 struct drm_mode_property_enum __user
*enum_ptr
;
3915 uint64_t __user
*values_ptr
;
3917 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3920 drm_modeset_lock_all(dev
);
3921 property
= drm_property_find(dev
, out_resp
->prop_id
);
3927 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3928 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3929 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
3933 value_count
= property
->num_values
;
3935 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
3936 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
3937 out_resp
->flags
= property
->flags
;
3939 if ((out_resp
->count_values
>= value_count
) && value_count
) {
3940 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
3941 for (i
= 0; i
< value_count
; i
++) {
3942 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
3948 out_resp
->count_values
= value_count
;
3950 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3951 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3952 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
3954 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
3955 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3957 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
3962 if (copy_to_user(&enum_ptr
[copied
].name
,
3963 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
3970 out_resp
->count_enum_blobs
= enum_count
;
3974 * NOTE: The idea seems to have been to use this to read all the blob
3975 * property values. But nothing ever added them to the corresponding
3976 * list, userspace always used the special-purpose get_blob ioctl to
3977 * read the value for a blob property. It also doesn't make a lot of
3978 * sense to return values here when everything else is just metadata for
3979 * the property itself.
3981 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
3982 out_resp
->count_enum_blobs
= 0;
3984 drm_modeset_unlock_all(dev
);
3988 static struct drm_property_blob
*
3989 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
3992 struct drm_property_blob
*blob
;
3995 if (!length
|| !data
)
3998 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
4002 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
4008 blob
->length
= length
;
4010 memcpy(blob
->data
, data
, length
);
4012 list_add_tail(&blob
->head
, &dev
->mode_config
.property_blob_list
);
4016 static void drm_property_destroy_blob(struct drm_device
*dev
,
4017 struct drm_property_blob
*blob
)
4019 drm_mode_object_put(dev
, &blob
->base
);
4020 list_del(&blob
->head
);
4025 * drm_mode_getblob_ioctl - get the contents of a blob property value
4028 * @file_priv: DRM file info
4030 * This function retrieves the contents of a blob property. The value stored in
4031 * an object's blob property is just a normal modeset object id.
4033 * Called by the user via ioctl.
4036 * Zero on success, negative errno on failure.
4038 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
4039 void *data
, struct drm_file
*file_priv
)
4041 struct drm_mode_get_blob
*out_resp
= data
;
4042 struct drm_property_blob
*blob
;
4044 void __user
*blob_ptr
;
4046 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4049 drm_modeset_lock_all(dev
);
4050 blob
= drm_property_blob_find(dev
, out_resp
->blob_id
);
4056 if (out_resp
->length
== blob
->length
) {
4057 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4058 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)) {
4063 out_resp
->length
= blob
->length
;
4066 drm_modeset_unlock_all(dev
);
4071 * drm_mode_connector_set_path_property - set tile property on connector
4072 * @connector: connector to set property on.
4073 * @path: path to use for property.
4075 * This creates a property to expose to userspace to specify a
4076 * connector path. This is mainly used for DisplayPort MST where
4077 * connectors have a topology and we want to allow userspace to give
4078 * them more meaningful names.
4081 * Zero on success, negative errno on failure.
4083 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4086 struct drm_device
*dev
= connector
->dev
;
4087 size_t size
= strlen(path
) + 1;
4090 connector
->path_blob_ptr
= drm_property_create_blob(connector
->dev
,
4092 if (!connector
->path_blob_ptr
)
4095 ret
= drm_object_property_set_value(&connector
->base
,
4096 dev
->mode_config
.path_property
,
4097 connector
->path_blob_ptr
->base
.id
);
4100 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4103 * drm_mode_connector_set_tile_property - set tile property on connector
4104 * @connector: connector to set property on.
4106 * This looks up the tile information for a connector, and creates a
4107 * property for userspace to parse if it exists. The property is of
4108 * the form of 8 integers using ':' as a separator.
4111 * Zero on success, errno on failure.
4113 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
)
4115 struct drm_device
*dev
= connector
->dev
;
4119 if (connector
->tile_blob_ptr
)
4120 drm_property_destroy_blob(dev
, connector
->tile_blob_ptr
);
4122 if (!connector
->has_tile
) {
4123 connector
->tile_blob_ptr
= NULL
;
4124 ret
= drm_object_property_set_value(&connector
->base
,
4125 dev
->mode_config
.tile_property
, 0);
4129 snprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4130 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
4131 connector
->num_h_tile
, connector
->num_v_tile
,
4132 connector
->tile_h_loc
, connector
->tile_v_loc
,
4133 connector
->tile_h_size
, connector
->tile_v_size
);
4134 size
= strlen(tile
) + 1;
4136 connector
->tile_blob_ptr
= drm_property_create_blob(connector
->dev
,
4138 if (!connector
->tile_blob_ptr
)
4141 ret
= drm_object_property_set_value(&connector
->base
,
4142 dev
->mode_config
.tile_property
,
4143 connector
->tile_blob_ptr
->base
.id
);
4146 EXPORT_SYMBOL(drm_mode_connector_set_tile_property
);
4149 * drm_mode_connector_update_edid_property - update the edid property of a connector
4150 * @connector: drm connector
4151 * @edid: new value of the edid property
4153 * This function creates a new blob modeset object and assigns its id to the
4154 * connector's edid property.
4157 * Zero on success, negative errno on failure.
4159 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4160 const struct edid
*edid
)
4162 struct drm_device
*dev
= connector
->dev
;
4166 /* ignore requests to set edid when overridden */
4167 if (connector
->override_edid
)
4170 if (connector
->edid_blob_ptr
)
4171 drm_property_destroy_blob(dev
, connector
->edid_blob_ptr
);
4173 /* Delete edid, when there is none. */
4175 connector
->edid_blob_ptr
= NULL
;
4176 ret
= drm_object_property_set_value(&connector
->base
, dev
->mode_config
.edid_property
, 0);
4180 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4181 connector
->edid_blob_ptr
= drm_property_create_blob(connector
->dev
,
4183 if (!connector
->edid_blob_ptr
)
4186 ret
= drm_object_property_set_value(&connector
->base
,
4187 dev
->mode_config
.edid_property
,
4188 connector
->edid_blob_ptr
->base
.id
);
4192 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4194 /* Some properties could refer to dynamic refcnt'd objects, or things that
4195 * need special locking to handle lifetime issues (ie. to ensure the prop
4196 * value doesn't become invalid part way through the property update due to
4197 * race). The value returned by reference via 'obj' should be passed back
4198 * to drm_property_change_valid_put() after the property is set (and the
4199 * object to which the property is attached has a chance to take it's own
4202 static bool drm_property_change_valid_get(struct drm_property
*property
,
4203 uint64_t value
, struct drm_mode_object
**ref
)
4207 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4212 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4213 if (value
< property
->values
[0] || value
> property
->values
[1])
4216 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4217 int64_t svalue
= U642I64(value
);
4219 if (svalue
< U642I64(property
->values
[0]) ||
4220 svalue
> U642I64(property
->values
[1]))
4223 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4224 uint64_t valid_mask
= 0;
4226 for (i
= 0; i
< property
->num_values
; i
++)
4227 valid_mask
|= (1ULL << property
->values
[i
]);
4228 return !(value
& ~valid_mask
);
4229 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4230 /* Only the driver knows */
4232 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4233 /* a zero value for an object property translates to null: */
4237 /* handle refcnt'd objects specially: */
4238 if (property
->values
[0] == DRM_MODE_OBJECT_FB
) {
4239 struct drm_framebuffer
*fb
;
4240 fb
= drm_framebuffer_lookup(property
->dev
, value
);
4248 return _object_find(property
->dev
, value
, property
->values
[0]) != NULL
;
4252 for (i
= 0; i
< property
->num_values
; i
++)
4253 if (property
->values
[i
] == value
)
4258 for (i
= 0; i
< property
->num_values
; i
++)
4259 if (property
->values
[i
] == value
)
4264 static void drm_property_change_valid_put(struct drm_property
*property
,
4265 struct drm_mode_object
*ref
)
4270 if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4271 if (property
->values
[0] == DRM_MODE_OBJECT_FB
)
4272 drm_framebuffer_unreference(obj_to_fb(ref
));
4277 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4280 * @file_priv: DRM file info
4282 * This function sets the current value for a connectors's property. It also
4283 * calls into a driver's ->set_property callback to update the hardware state
4285 * Called by the user via ioctl.
4288 * Zero on success, negative errno on failure.
4290 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4291 void *data
, struct drm_file
*file_priv
)
4293 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4294 struct drm_mode_obj_set_property obj_set_prop
= {
4295 .value
= conn_set_prop
->value
,
4296 .prop_id
= conn_set_prop
->prop_id
,
4297 .obj_id
= conn_set_prop
->connector_id
,
4298 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4301 /* It does all the locking and checking we need */
4302 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4305 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4306 struct drm_property
*property
,
4310 struct drm_connector
*connector
= obj_to_connector(obj
);
4312 /* Do DPMS ourselves */
4313 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4314 if (connector
->funcs
->dpms
)
4315 (*connector
->funcs
->dpms
)(connector
, (int)value
);
4317 } else if (connector
->funcs
->set_property
)
4318 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4320 /* store the property value if successful */
4322 drm_object_property_set_value(&connector
->base
, property
, value
);
4326 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4327 struct drm_property
*property
,
4331 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4333 if (crtc
->funcs
->set_property
)
4334 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4336 drm_object_property_set_value(obj
, property
, value
);
4342 * drm_mode_plane_set_obj_prop - set the value of a property
4343 * @plane: drm plane object to set property value for
4344 * @property: property to set
4345 * @value: value the property should be set to
4347 * This functions sets a given property on a given plane object. This function
4348 * calls the driver's ->set_property callback and changes the software state of
4349 * the property if the callback succeeds.
4352 * Zero on success, error code on failure.
4354 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4355 struct drm_property
*property
,
4359 struct drm_mode_object
*obj
= &plane
->base
;
4361 if (plane
->funcs
->set_property
)
4362 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4364 drm_object_property_set_value(obj
, property
, value
);
4368 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4371 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4374 * @file_priv: DRM file info
4376 * This function retrieves the current value for an object's property. Compared
4377 * to the connector specific ioctl this one is extended to also work on crtc and
4380 * Called by the user via ioctl.
4383 * Zero on success, negative errno on failure.
4385 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4386 struct drm_file
*file_priv
)
4388 struct drm_mode_obj_get_properties
*arg
= data
;
4389 struct drm_mode_object
*obj
;
4393 int props_count
= 0;
4394 uint32_t __user
*props_ptr
;
4395 uint64_t __user
*prop_values_ptr
;
4397 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4400 drm_modeset_lock_all(dev
);
4402 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4407 if (!obj
->properties
) {
4412 props_count
= obj
->properties
->count
;
4414 /* This ioctl is called twice, once to determine how much space is
4415 * needed, and the 2nd time to fill it. */
4416 if ((arg
->count_props
>= props_count
) && props_count
) {
4418 props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->props_ptr
);
4419 prop_values_ptr
= (uint64_t __user
*)(unsigned long)
4420 (arg
->prop_values_ptr
);
4421 for (i
= 0; i
< props_count
; i
++) {
4422 struct drm_property
*prop
= obj
->properties
->properties
[i
];
4425 ret
= drm_object_property_get_value(obj
, prop
, &val
);
4429 if (put_user(prop
->base
.id
, props_ptr
+ copied
)) {
4434 if (put_user(val
, prop_values_ptr
+ copied
)) {
4441 arg
->count_props
= props_count
;
4443 drm_modeset_unlock_all(dev
);
4448 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4451 * @file_priv: DRM file info
4453 * This function sets the current value for an object's property. It also calls
4454 * into a driver's ->set_property callback to update the hardware state.
4455 * Compared to the connector specific ioctl this one is extended to also work on
4456 * crtc and plane objects.
4458 * Called by the user via ioctl.
4461 * Zero on success, negative errno on failure.
4463 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4464 struct drm_file
*file_priv
)
4466 struct drm_mode_obj_set_property
*arg
= data
;
4467 struct drm_mode_object
*arg_obj
;
4468 struct drm_mode_object
*prop_obj
;
4469 struct drm_property
*property
;
4470 int i
, ret
= -EINVAL
;
4471 struct drm_mode_object
*ref
;
4473 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4476 drm_modeset_lock_all(dev
);
4478 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4483 if (!arg_obj
->properties
)
4486 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4487 if (arg_obj
->properties
->properties
[i
]->base
.id
== arg
->prop_id
)
4490 if (i
== arg_obj
->properties
->count
)
4493 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
4494 DRM_MODE_OBJECT_PROPERTY
);
4499 property
= obj_to_property(prop_obj
);
4501 if (!drm_property_change_valid_get(property
, arg
->value
, &ref
))
4504 switch (arg_obj
->type
) {
4505 case DRM_MODE_OBJECT_CONNECTOR
:
4506 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
4509 case DRM_MODE_OBJECT_CRTC
:
4510 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
4512 case DRM_MODE_OBJECT_PLANE
:
4513 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
4514 property
, arg
->value
);
4518 drm_property_change_valid_put(property
, ref
);
4521 drm_modeset_unlock_all(dev
);
4526 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4527 * @connector: connector to attach
4528 * @encoder: encoder to attach @connector to
4530 * This function links up a connector to an encoder. Note that the routing
4531 * restrictions between encoders and crtcs are exposed to userspace through the
4532 * possible_clones and possible_crtcs bitmasks.
4535 * Zero on success, negative errno on failure.
4537 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
4538 struct drm_encoder
*encoder
)
4542 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
4543 if (connector
->encoder_ids
[i
] == 0) {
4544 connector
->encoder_ids
[i
] = encoder
->base
.id
;
4550 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
4553 * drm_mode_crtc_set_gamma_size - set the gamma table size
4554 * @crtc: CRTC to set the gamma table size for
4555 * @gamma_size: size of the gamma table
4557 * Drivers which support gamma tables should set this to the supported gamma
4558 * table size when initializing the CRTC. Currently the drm core only supports a
4559 * fixed gamma table size.
4562 * Zero on success, negative errno on failure.
4564 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
4567 crtc
->gamma_size
= gamma_size
;
4569 crtc
->gamma_store
= kcalloc(gamma_size
, sizeof(uint16_t) * 3,
4571 if (!crtc
->gamma_store
) {
4572 crtc
->gamma_size
= 0;
4578 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
4581 * drm_mode_gamma_set_ioctl - set the gamma table
4584 * @file_priv: DRM file info
4586 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4587 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4589 * Called by the user via ioctl.
4592 * Zero on success, negative errno on failure.
4594 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
4595 void *data
, struct drm_file
*file_priv
)
4597 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4598 struct drm_crtc
*crtc
;
4599 void *r_base
, *g_base
, *b_base
;
4603 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4606 drm_modeset_lock_all(dev
);
4607 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4613 if (crtc
->funcs
->gamma_set
== NULL
) {
4618 /* memcpy into gamma store */
4619 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4624 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4625 r_base
= crtc
->gamma_store
;
4626 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
4631 g_base
= r_base
+ size
;
4632 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
4637 b_base
= g_base
+ size
;
4638 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
4643 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
4646 drm_modeset_unlock_all(dev
);
4652 * drm_mode_gamma_get_ioctl - get the gamma table
4655 * @file_priv: DRM file info
4657 * Copy the current gamma table into the storage provided. This also provides
4658 * the gamma table size the driver expects, which can be used to size the
4659 * allocated storage.
4661 * Called by the user via ioctl.
4664 * Zero on success, negative errno on failure.
4666 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
4667 void *data
, struct drm_file
*file_priv
)
4669 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4670 struct drm_crtc
*crtc
;
4671 void *r_base
, *g_base
, *b_base
;
4675 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4678 drm_modeset_lock_all(dev
);
4679 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4685 /* memcpy into gamma store */
4686 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4691 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4692 r_base
= crtc
->gamma_store
;
4693 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
4698 g_base
= r_base
+ size
;
4699 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
4704 b_base
= g_base
+ size
;
4705 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
4710 drm_modeset_unlock_all(dev
);
4715 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4718 * @file_priv: DRM file info
4720 * This schedules an asynchronous update on a given CRTC, called page flip.
4721 * Optionally a drm event is generated to signal the completion of the event.
4722 * Generic drivers cannot assume that a pageflip with changed framebuffer
4723 * properties (including driver specific metadata like tiling layout) will work,
4724 * but some drivers support e.g. pixel format changes through the pageflip
4727 * Called by the user via ioctl.
4730 * Zero on success, negative errno on failure.
4732 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
4733 void *data
, struct drm_file
*file_priv
)
4735 struct drm_mode_crtc_page_flip
*page_flip
= data
;
4736 struct drm_crtc
*crtc
;
4737 struct drm_framebuffer
*fb
= NULL
;
4738 struct drm_pending_vblank_event
*e
= NULL
;
4739 unsigned long flags
;
4742 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
4743 page_flip
->reserved
!= 0)
4746 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
4749 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
4753 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
4754 if (crtc
->primary
->fb
== NULL
) {
4755 /* The framebuffer is currently unbound, presumably
4756 * due to a hotplug event, that userspace has not
4763 if (crtc
->funcs
->page_flip
== NULL
)
4766 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
4772 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
4776 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
4777 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4782 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4784 spin_lock_irqsave(&dev
->event_lock
, flags
);
4785 if (file_priv
->event_space
< sizeof(e
->event
)) {
4786 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4789 file_priv
->event_space
-= sizeof(e
->event
);
4790 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4792 e
= kzalloc(sizeof(*e
), GFP_KERNEL
);
4794 spin_lock_irqsave(&dev
->event_lock
, flags
);
4795 file_priv
->event_space
+= sizeof(e
->event
);
4796 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4800 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
4801 e
->event
.base
.length
= sizeof(e
->event
);
4802 e
->event
.user_data
= page_flip
->user_data
;
4803 e
->base
.event
= &e
->event
.base
;
4804 e
->base
.file_priv
= file_priv
;
4806 (void (*) (struct drm_pending_event
*)) kfree
;
4809 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
4810 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
4812 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4813 spin_lock_irqsave(&dev
->event_lock
, flags
);
4814 file_priv
->event_space
+= sizeof(e
->event
);
4815 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4818 /* Keep the old fb, don't unref it. */
4819 crtc
->primary
->old_fb
= NULL
;
4822 * Warn if the driver hasn't properly updated the crtc->fb
4823 * field to reflect that the new framebuffer is now used.
4824 * Failing to do so will screw with the reference counting
4827 WARN_ON(crtc
->primary
->fb
!= fb
);
4828 /* Unref only the old framebuffer. */
4834 drm_framebuffer_unreference(fb
);
4835 if (crtc
->primary
->old_fb
)
4836 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
4837 crtc
->primary
->old_fb
= NULL
;
4838 drm_modeset_unlock_crtc(crtc
);
4844 * drm_mode_config_reset - call ->reset callbacks
4847 * This functions calls all the crtc's, encoder's and connector's ->reset
4848 * callback. Drivers can use this in e.g. their driver load or resume code to
4849 * reset hardware and software state.
4851 void drm_mode_config_reset(struct drm_device
*dev
)
4853 struct drm_crtc
*crtc
;
4854 struct drm_plane
*plane
;
4855 struct drm_encoder
*encoder
;
4856 struct drm_connector
*connector
;
4858 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
)
4859 if (plane
->funcs
->reset
)
4860 plane
->funcs
->reset(plane
);
4862 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
4863 if (crtc
->funcs
->reset
)
4864 crtc
->funcs
->reset(crtc
);
4866 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
4867 if (encoder
->funcs
->reset
)
4868 encoder
->funcs
->reset(encoder
);
4870 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
4871 connector
->status
= connector_status_unknown
;
4873 if (connector
->funcs
->reset
)
4874 connector
->funcs
->reset(connector
);
4877 EXPORT_SYMBOL(drm_mode_config_reset
);
4880 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4883 * @file_priv: DRM file info
4885 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4886 * TTM or something else entirely) and returns the resulting buffer handle. This
4887 * handle can then be wrapped up into a framebuffer modeset object.
4889 * Note that userspace is not allowed to use such objects for render
4890 * acceleration - drivers must create their own private ioctls for such a use
4893 * Called by the user via ioctl.
4896 * Zero on success, negative errno on failure.
4898 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
4899 void *data
, struct drm_file
*file_priv
)
4901 struct drm_mode_create_dumb
*args
= data
;
4902 u32 cpp
, stride
, size
;
4904 if (!dev
->driver
->dumb_create
)
4906 if (!args
->width
|| !args
->height
|| !args
->bpp
)
4909 /* overflow checks for 32bit size calculations */
4910 /* NOTE: DIV_ROUND_UP() can overflow */
4911 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
4912 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
4914 stride
= cpp
* args
->width
;
4915 if (args
->height
> 0xffffffffU
/ stride
)
4918 /* test for wrap-around */
4919 size
= args
->height
* stride
;
4920 if (PAGE_ALIGN(size
) == 0)
4924 * handle, pitch and size are output parameters. Zero them out to
4925 * prevent drivers from accidentally using uninitialized data. Since
4926 * not all existing userspace is clearing these fields properly we
4927 * cannot reject IOCTL with garbage in them.
4933 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
4937 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4940 * @file_priv: DRM file info
4942 * Allocate an offset in the drm device node's address space to be able to
4943 * memory map a dumb buffer.
4945 * Called by the user via ioctl.
4948 * Zero on success, negative errno on failure.
4950 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
4951 void *data
, struct drm_file
*file_priv
)
4953 struct drm_mode_map_dumb
*args
= data
;
4955 /* call driver ioctl to get mmap offset */
4956 if (!dev
->driver
->dumb_map_offset
)
4959 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
4963 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4966 * @file_priv: DRM file info
4968 * This destroys the userspace handle for the given dumb backing storage buffer.
4969 * Since buffer objects must be reference counted in the kernel a buffer object
4970 * won't be immediately freed if a framebuffer modeset object still uses it.
4972 * Called by the user via ioctl.
4975 * Zero on success, negative errno on failure.
4977 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
4978 void *data
, struct drm_file
*file_priv
)
4980 struct drm_mode_destroy_dumb
*args
= data
;
4982 if (!dev
->driver
->dumb_destroy
)
4985 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
4989 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4990 * @format: pixel format (DRM_FORMAT_*)
4991 * @depth: storage for the depth value
4992 * @bpp: storage for the bpp value
4994 * This only supports RGB formats here for compat with code that doesn't use
4995 * pixel formats directly yet.
4997 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
5002 case DRM_FORMAT_RGB332
:
5003 case DRM_FORMAT_BGR233
:
5007 case DRM_FORMAT_XRGB1555
:
5008 case DRM_FORMAT_XBGR1555
:
5009 case DRM_FORMAT_RGBX5551
:
5010 case DRM_FORMAT_BGRX5551
:
5011 case DRM_FORMAT_ARGB1555
:
5012 case DRM_FORMAT_ABGR1555
:
5013 case DRM_FORMAT_RGBA5551
:
5014 case DRM_FORMAT_BGRA5551
:
5018 case DRM_FORMAT_RGB565
:
5019 case DRM_FORMAT_BGR565
:
5023 case DRM_FORMAT_RGB888
:
5024 case DRM_FORMAT_BGR888
:
5028 case DRM_FORMAT_XRGB8888
:
5029 case DRM_FORMAT_XBGR8888
:
5030 case DRM_FORMAT_RGBX8888
:
5031 case DRM_FORMAT_BGRX8888
:
5035 case DRM_FORMAT_XRGB2101010
:
5036 case DRM_FORMAT_XBGR2101010
:
5037 case DRM_FORMAT_RGBX1010102
:
5038 case DRM_FORMAT_BGRX1010102
:
5039 case DRM_FORMAT_ARGB2101010
:
5040 case DRM_FORMAT_ABGR2101010
:
5041 case DRM_FORMAT_RGBA1010102
:
5042 case DRM_FORMAT_BGRA1010102
:
5046 case DRM_FORMAT_ARGB8888
:
5047 case DRM_FORMAT_ABGR8888
:
5048 case DRM_FORMAT_RGBA8888
:
5049 case DRM_FORMAT_BGRA8888
:
5054 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5055 drm_get_format_name(format
));
5061 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
5064 * drm_format_num_planes - get the number of planes for format
5065 * @format: pixel format (DRM_FORMAT_*)
5068 * The number of planes used by the specified pixel format.
5070 int drm_format_num_planes(uint32_t format
)
5073 case DRM_FORMAT_YUV410
:
5074 case DRM_FORMAT_YVU410
:
5075 case DRM_FORMAT_YUV411
:
5076 case DRM_FORMAT_YVU411
:
5077 case DRM_FORMAT_YUV420
:
5078 case DRM_FORMAT_YVU420
:
5079 case DRM_FORMAT_YUV422
:
5080 case DRM_FORMAT_YVU422
:
5081 case DRM_FORMAT_YUV444
:
5082 case DRM_FORMAT_YVU444
:
5084 case DRM_FORMAT_NV12
:
5085 case DRM_FORMAT_NV21
:
5086 case DRM_FORMAT_NV16
:
5087 case DRM_FORMAT_NV61
:
5088 case DRM_FORMAT_NV24
:
5089 case DRM_FORMAT_NV42
:
5095 EXPORT_SYMBOL(drm_format_num_planes
);
5098 * drm_format_plane_cpp - determine the bytes per pixel value
5099 * @format: pixel format (DRM_FORMAT_*)
5100 * @plane: plane index
5103 * The bytes per pixel value for the specified plane.
5105 int drm_format_plane_cpp(uint32_t format
, int plane
)
5110 if (plane
>= drm_format_num_planes(format
))
5114 case DRM_FORMAT_YUYV
:
5115 case DRM_FORMAT_YVYU
:
5116 case DRM_FORMAT_UYVY
:
5117 case DRM_FORMAT_VYUY
:
5119 case DRM_FORMAT_NV12
:
5120 case DRM_FORMAT_NV21
:
5121 case DRM_FORMAT_NV16
:
5122 case DRM_FORMAT_NV61
:
5123 case DRM_FORMAT_NV24
:
5124 case DRM_FORMAT_NV42
:
5125 return plane
? 2 : 1;
5126 case DRM_FORMAT_YUV410
:
5127 case DRM_FORMAT_YVU410
:
5128 case DRM_FORMAT_YUV411
:
5129 case DRM_FORMAT_YVU411
:
5130 case DRM_FORMAT_YUV420
:
5131 case DRM_FORMAT_YVU420
:
5132 case DRM_FORMAT_YUV422
:
5133 case DRM_FORMAT_YVU422
:
5134 case DRM_FORMAT_YUV444
:
5135 case DRM_FORMAT_YVU444
:
5138 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
5142 EXPORT_SYMBOL(drm_format_plane_cpp
);
5145 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5146 * @format: pixel format (DRM_FORMAT_*)
5149 * The horizontal chroma subsampling factor for the
5150 * specified pixel format.
5152 int drm_format_horz_chroma_subsampling(uint32_t format
)
5155 case DRM_FORMAT_YUV411
:
5156 case DRM_FORMAT_YVU411
:
5157 case DRM_FORMAT_YUV410
:
5158 case DRM_FORMAT_YVU410
:
5160 case DRM_FORMAT_YUYV
:
5161 case DRM_FORMAT_YVYU
:
5162 case DRM_FORMAT_UYVY
:
5163 case DRM_FORMAT_VYUY
:
5164 case DRM_FORMAT_NV12
:
5165 case DRM_FORMAT_NV21
:
5166 case DRM_FORMAT_NV16
:
5167 case DRM_FORMAT_NV61
:
5168 case DRM_FORMAT_YUV422
:
5169 case DRM_FORMAT_YVU422
:
5170 case DRM_FORMAT_YUV420
:
5171 case DRM_FORMAT_YVU420
:
5177 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5180 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5181 * @format: pixel format (DRM_FORMAT_*)
5184 * The vertical chroma subsampling factor for the
5185 * specified pixel format.
5187 int drm_format_vert_chroma_subsampling(uint32_t format
)
5190 case DRM_FORMAT_YUV410
:
5191 case DRM_FORMAT_YVU410
:
5193 case DRM_FORMAT_YUV420
:
5194 case DRM_FORMAT_YVU420
:
5195 case DRM_FORMAT_NV12
:
5196 case DRM_FORMAT_NV21
:
5202 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5205 * drm_rotation_simplify() - Try to simplify the rotation
5206 * @rotation: Rotation to be simplified
5207 * @supported_rotations: Supported rotations
5209 * Attempt to simplify the rotation to a form that is supported.
5210 * Eg. if the hardware supports everything except DRM_REFLECT_X
5211 * one could call this function like this:
5213 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5214 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5215 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5217 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5218 * transforms the hardware supports, this function may not
5219 * be able to produce a supported transform, so the caller should
5220 * check the result afterwards.
5222 unsigned int drm_rotation_simplify(unsigned int rotation
,
5223 unsigned int supported_rotations
)
5225 if (rotation
& ~supported_rotations
) {
5226 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5227 rotation
= (rotation
& ~0xf) | BIT((ffs(rotation
& 0xf) + 1) % 4);
5232 EXPORT_SYMBOL(drm_rotation_simplify
);
5235 * drm_mode_config_init - initialize DRM mode_configuration structure
5238 * Initialize @dev's mode_config structure, used for tracking the graphics
5239 * configuration of @dev.
5241 * Since this initializes the modeset locks, no locking is possible. Which is no
5242 * problem, since this should happen single threaded at init time. It is the
5243 * driver's problem to ensure this guarantee.
5246 void drm_mode_config_init(struct drm_device
*dev
)
5248 mutex_init(&dev
->mode_config
.mutex
);
5249 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5250 mutex_init(&dev
->mode_config
.idr_mutex
);
5251 mutex_init(&dev
->mode_config
.fb_lock
);
5252 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5253 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5254 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5255 INIT_LIST_HEAD(&dev
->mode_config
.bridge_list
);
5256 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5257 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5258 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5259 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5260 idr_init(&dev
->mode_config
.crtc_idr
);
5261 idr_init(&dev
->mode_config
.tile_idr
);
5263 drm_modeset_lock_all(dev
);
5264 drm_mode_create_standard_connector_properties(dev
);
5265 drm_mode_create_standard_plane_properties(dev
);
5266 drm_modeset_unlock_all(dev
);
5268 /* Just to be sure */
5269 dev
->mode_config
.num_fb
= 0;
5270 dev
->mode_config
.num_connector
= 0;
5271 dev
->mode_config
.num_crtc
= 0;
5272 dev
->mode_config
.num_encoder
= 0;
5273 dev
->mode_config
.num_overlay_plane
= 0;
5274 dev
->mode_config
.num_total_plane
= 0;
5276 EXPORT_SYMBOL(drm_mode_config_init
);
5279 * drm_mode_config_cleanup - free up DRM mode_config info
5282 * Free up all the connectors and CRTCs associated with this DRM device, then
5283 * free up the framebuffers and associated buffer objects.
5285 * Note that since this /should/ happen single-threaded at driver/device
5286 * teardown time, no locking is required. It's the driver's job to ensure that
5287 * this guarantee actually holds true.
5289 * FIXME: cleanup any dangling user buffer objects too
5291 void drm_mode_config_cleanup(struct drm_device
*dev
)
5293 struct drm_connector
*connector
, *ot
;
5294 struct drm_crtc
*crtc
, *ct
;
5295 struct drm_encoder
*encoder
, *enct
;
5296 struct drm_bridge
*bridge
, *brt
;
5297 struct drm_framebuffer
*fb
, *fbt
;
5298 struct drm_property
*property
, *pt
;
5299 struct drm_property_blob
*blob
, *bt
;
5300 struct drm_plane
*plane
, *plt
;
5302 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5304 encoder
->funcs
->destroy(encoder
);
5307 list_for_each_entry_safe(bridge
, brt
,
5308 &dev
->mode_config
.bridge_list
, head
) {
5309 bridge
->funcs
->destroy(bridge
);
5312 list_for_each_entry_safe(connector
, ot
,
5313 &dev
->mode_config
.connector_list
, head
) {
5314 connector
->funcs
->destroy(connector
);
5317 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5319 drm_property_destroy(dev
, property
);
5322 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5324 drm_property_destroy_blob(dev
, blob
);
5328 * Single-threaded teardown context, so it's not required to grab the
5329 * fb_lock to protect against concurrent fb_list access. Contrary, it
5330 * would actually deadlock with the drm_framebuffer_cleanup function.
5332 * Also, if there are any framebuffers left, that's a driver leak now,
5333 * so politely WARN about this.
5335 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5336 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5337 drm_framebuffer_remove(fb
);
5340 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5342 plane
->funcs
->destroy(plane
);
5345 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5346 crtc
->funcs
->destroy(crtc
);
5349 idr_destroy(&dev
->mode_config
.tile_idr
);
5350 idr_destroy(&dev
->mode_config
.crtc_idr
);
5351 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5353 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5355 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5356 unsigned int supported_rotations
)
5358 static const struct drm_prop_enum_list props
[] = {
5359 { DRM_ROTATE_0
, "rotate-0" },
5360 { DRM_ROTATE_90
, "rotate-90" },
5361 { DRM_ROTATE_180
, "rotate-180" },
5362 { DRM_ROTATE_270
, "rotate-270" },
5363 { DRM_REFLECT_X
, "reflect-x" },
5364 { DRM_REFLECT_Y
, "reflect-y" },
5367 return drm_property_create_bitmask(dev
, 0, "rotation",
5368 props
, ARRAY_SIZE(props
),
5369 supported_rotations
);
5371 EXPORT_SYMBOL(drm_mode_create_rotation_property
);
5376 * Tile groups are used to represent tiled monitors with a unique
5377 * integer identifier. Tiled monitors using DisplayID v1.3 have
5378 * a unique 8-byte handle, we store this in a tile group, so we
5379 * have a common identifier for all tiles in a monitor group.
5381 static void drm_tile_group_free(struct kref
*kref
)
5383 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
5384 struct drm_device
*dev
= tg
->dev
;
5385 mutex_lock(&dev
->mode_config
.idr_mutex
);
5386 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
5387 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5392 * drm_mode_put_tile_group - drop a reference to a tile group.
5394 * @tg: tile group to drop reference to.
5396 * drop reference to tile group and free if 0.
5398 void drm_mode_put_tile_group(struct drm_device
*dev
,
5399 struct drm_tile_group
*tg
)
5401 kref_put(&tg
->refcount
, drm_tile_group_free
);
5405 * drm_mode_get_tile_group - get a reference to an existing tile group
5407 * @topology: 8-bytes unique per monitor.
5409 * Use the unique bytes to get a reference to an existing tile group.
5412 * tile group or NULL if not found.
5414 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
5417 struct drm_tile_group
*tg
;
5419 mutex_lock(&dev
->mode_config
.idr_mutex
);
5420 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
5421 if (!memcmp(tg
->group_data
, topology
, 8)) {
5422 if (!kref_get_unless_zero(&tg
->refcount
))
5424 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5428 mutex_unlock(&dev
->mode_config
.idr_mutex
);
5433 * drm_mode_create_tile_group - create a tile group from a displayid description
5435 * @topology: 8-bytes unique per monitor.
5437 * Create a tile group for the unique monitor, and get a unique
5438 * identifier for the tile group.
5441 * new tile group or error.
5443 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
5446 struct drm_tile_group
*tg
;
5449 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
5451 return ERR_PTR(-ENOMEM
);
5453 kref_init(&tg
->refcount
);
5454 memcpy(tg
->group_data
, topology
, 8);
5457 mutex_lock(&dev
->mode_config
.idr_mutex
);
5458 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
5466 mutex_unlock(&dev
->mode_config
.idr_mutex
);