2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_fourcc.h>
40 #include <drm/drm_modeset_lock.h>
42 #include "drm_crtc_internal.h"
43 #include "drm_internal.h"
45 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
46 struct drm_mode_fb_cmd2
*r
,
47 struct drm_file
*file_priv
);
49 /* Avoid boilerplate. I'm tired of typing. */
50 #define DRM_ENUM_NAME_FN(fnname, list) \
51 const char *fnname(int val) \
54 for (i = 0; i < ARRAY_SIZE(list); i++) { \
55 if (list[i].type == val) \
56 return list[i].name; \
64 static const struct drm_prop_enum_list drm_dpms_enum_list
[] =
65 { { DRM_MODE_DPMS_ON
, "On" },
66 { DRM_MODE_DPMS_STANDBY
, "Standby" },
67 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
68 { DRM_MODE_DPMS_OFF
, "Off" }
71 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
73 static const struct drm_prop_enum_list drm_plane_type_enum_list
[] =
75 { DRM_PLANE_TYPE_OVERLAY
, "Overlay" },
76 { DRM_PLANE_TYPE_PRIMARY
, "Primary" },
77 { DRM_PLANE_TYPE_CURSOR
, "Cursor" },
83 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] =
85 { DRM_MODE_SCALE_NONE
, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
87 { DRM_MODE_SCALE_CENTER
, "Center" },
88 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list
[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE
, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3
, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9
, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list
[] =
102 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
103 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
104 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
107 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
109 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] =
111 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
112 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
113 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
116 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
117 drm_dvi_i_subconnector_enum_list
)
119 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] =
121 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
125 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
128 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
130 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] =
132 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
133 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
134 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
135 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
136 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
139 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
140 drm_tv_subconnector_enum_list
)
142 static const struct drm_prop_enum_list drm_dirty_info_enum_list
[] = {
143 { DRM_MODE_DIRTY_OFF
, "Off" },
144 { DRM_MODE_DIRTY_ON
, "On" },
145 { DRM_MODE_DIRTY_ANNOTATE
, "Annotate" },
148 struct drm_conn_prop_enum_list
{
155 * Connector and encoder types.
157 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] =
158 { { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
159 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
160 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
161 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
162 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
163 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
164 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
165 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
166 { DRM_MODE_CONNECTOR_Component
, "Component" },
167 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
168 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
169 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
170 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
171 { DRM_MODE_CONNECTOR_TV
, "TV" },
172 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
173 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
174 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
177 static const struct drm_prop_enum_list drm_encoder_enum_list
[] =
178 { { DRM_MODE_ENCODER_NONE
, "None" },
179 { DRM_MODE_ENCODER_DAC
, "DAC" },
180 { DRM_MODE_ENCODER_TMDS
, "TMDS" },
181 { DRM_MODE_ENCODER_LVDS
, "LVDS" },
182 { DRM_MODE_ENCODER_TVDAC
, "TV" },
183 { DRM_MODE_ENCODER_VIRTUAL
, "Virtual" },
184 { DRM_MODE_ENCODER_DSI
, "DSI" },
185 { DRM_MODE_ENCODER_DPMST
, "DP MST" },
188 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] =
190 { SubPixelUnknown
, "Unknown" },
191 { SubPixelHorizontalRGB
, "Horizontal RGB" },
192 { SubPixelHorizontalBGR
, "Horizontal BGR" },
193 { SubPixelVerticalRGB
, "Vertical RGB" },
194 { SubPixelVerticalBGR
, "Vertical BGR" },
195 { SubPixelNone
, "None" },
198 void drm_connector_ida_init(void)
202 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
203 ida_init(&drm_connector_enum_list
[i
].ida
);
206 void drm_connector_ida_destroy(void)
210 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
211 ida_destroy(&drm_connector_enum_list
[i
].ida
);
215 * drm_get_connector_status_name - return a string for connector status
216 * @status: connector status to compute name of
218 * In contrast to the other drm_get_*_name functions this one here returns a
219 * const pointer and hence is threadsafe.
221 const char *drm_get_connector_status_name(enum drm_connector_status status
)
223 if (status
== connector_status_connected
)
225 else if (status
== connector_status_disconnected
)
226 return "disconnected";
230 EXPORT_SYMBOL(drm_get_connector_status_name
);
233 * drm_get_subpixel_order_name - return a string for a given subpixel enum
234 * @order: enum of subpixel_order
236 * Note you could abuse this and return something out of bounds, but that
237 * would be a caller error. No unscrubbed user data should make it here.
239 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
241 return drm_subpixel_enum_list
[order
].name
;
243 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
245 static char printable_char(int c
)
247 return isascii(c
) && isprint(c
) ? c
: '?';
251 * drm_get_format_name - return a string for drm fourcc format
252 * @format: format to compute name of
254 * Note that the buffer used by this function is globally shared and owned by
255 * the function itself.
257 * FIXME: This isn't really multithreading safe.
259 const char *drm_get_format_name(uint32_t format
)
263 snprintf(buf
, sizeof(buf
),
264 "%c%c%c%c %s-endian (0x%08x)",
265 printable_char(format
& 0xff),
266 printable_char((format
>> 8) & 0xff),
267 printable_char((format
>> 16) & 0xff),
268 printable_char((format
>> 24) & 0x7f),
269 format
& DRM_FORMAT_BIG_ENDIAN
? "big" : "little",
274 EXPORT_SYMBOL(drm_get_format_name
);
277 * Internal function to assign a slot in the object idr and optionally
278 * register the object into the idr.
280 static int drm_mode_object_get_reg(struct drm_device
*dev
,
281 struct drm_mode_object
*obj
,
287 mutex_lock(&dev
->mode_config
.idr_mutex
);
288 ret
= idr_alloc(&dev
->mode_config
.crtc_idr
, register_obj
? obj
: NULL
, 1, 0, GFP_KERNEL
);
291 * Set up the object linking under the protection of the idr
292 * lock so that other users can't see inconsistent state.
295 obj
->type
= obj_type
;
297 mutex_unlock(&dev
->mode_config
.idr_mutex
);
299 return ret
< 0 ? ret
: 0;
303 * drm_mode_object_get - allocate a new modeset identifier
305 * @obj: object pointer, used to generate unique ID
306 * @obj_type: object type
308 * Create a unique identifier based on @ptr in @dev's identifier space. Used
309 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
310 * modeset identifiers are _not_ reference counted. Hence don't use this for
311 * reference counted modeset objects like framebuffers.
314 * New unique (relative to other objects in @dev) integer identifier for the
317 int drm_mode_object_get(struct drm_device
*dev
,
318 struct drm_mode_object
*obj
, uint32_t obj_type
)
320 return drm_mode_object_get_reg(dev
, obj
, obj_type
, true);
323 static void drm_mode_object_register(struct drm_device
*dev
,
324 struct drm_mode_object
*obj
)
326 mutex_lock(&dev
->mode_config
.idr_mutex
);
327 idr_replace(&dev
->mode_config
.crtc_idr
, obj
, obj
->id
);
328 mutex_unlock(&dev
->mode_config
.idr_mutex
);
332 * drm_mode_object_put - free a modeset identifer
334 * @object: object to free
336 * Free @id from @dev's unique identifier pool. Note that despite the _get
337 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
338 * for reference counted modeset objects like framebuffers.
340 void drm_mode_object_put(struct drm_device
*dev
,
341 struct drm_mode_object
*object
)
343 mutex_lock(&dev
->mode_config
.idr_mutex
);
344 idr_remove(&dev
->mode_config
.crtc_idr
, object
->id
);
345 mutex_unlock(&dev
->mode_config
.idr_mutex
);
348 static struct drm_mode_object
*_object_find(struct drm_device
*dev
,
349 uint32_t id
, uint32_t type
)
351 struct drm_mode_object
*obj
= NULL
;
353 mutex_lock(&dev
->mode_config
.idr_mutex
);
354 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
355 if (obj
&& type
!= DRM_MODE_OBJECT_ANY
&& obj
->type
!= type
)
357 if (obj
&& obj
->id
!= id
)
359 /* don't leak out unref'd fb's */
360 if (obj
&& (obj
->type
== DRM_MODE_OBJECT_FB
))
362 mutex_unlock(&dev
->mode_config
.idr_mutex
);
368 * drm_mode_object_find - look up a drm object with static lifetime
370 * @id: id of the mode object
371 * @type: type of the mode object
373 * Note that framebuffers cannot be looked up with this functions - since those
374 * are reference counted, they need special treatment. Even with
375 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
376 * rather than WARN_ON()).
378 struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
379 uint32_t id
, uint32_t type
)
381 struct drm_mode_object
*obj
= NULL
;
383 /* Framebuffers are reference counted and need their own lookup
385 WARN_ON(type
== DRM_MODE_OBJECT_FB
);
386 obj
= _object_find(dev
, id
, type
);
389 EXPORT_SYMBOL(drm_mode_object_find
);
392 * drm_framebuffer_init - initialize a framebuffer
394 * @fb: framebuffer to be initialized
395 * @funcs: ... with these functions
397 * Allocates an ID for the framebuffer's parent mode object, sets its mode
398 * functions & device file and adds it to the master fd list.
401 * This functions publishes the fb and makes it available for concurrent access
402 * by other users. Which means by this point the fb _must_ be fully set up -
403 * since all the fb attributes are invariant over its lifetime, no further
404 * locking but only correct reference counting is required.
407 * Zero on success, error code on failure.
409 int drm_framebuffer_init(struct drm_device
*dev
, struct drm_framebuffer
*fb
,
410 const struct drm_framebuffer_funcs
*funcs
)
414 mutex_lock(&dev
->mode_config
.fb_lock
);
415 kref_init(&fb
->refcount
);
416 INIT_LIST_HEAD(&fb
->filp_head
);
420 ret
= drm_mode_object_get(dev
, &fb
->base
, DRM_MODE_OBJECT_FB
);
424 dev
->mode_config
.num_fb
++;
425 list_add(&fb
->head
, &dev
->mode_config
.fb_list
);
427 mutex_unlock(&dev
->mode_config
.fb_lock
);
431 EXPORT_SYMBOL(drm_framebuffer_init
);
433 /* dev->mode_config.fb_lock must be held! */
434 static void __drm_framebuffer_unregister(struct drm_device
*dev
,
435 struct drm_framebuffer
*fb
)
437 mutex_lock(&dev
->mode_config
.idr_mutex
);
438 idr_remove(&dev
->mode_config
.crtc_idr
, fb
->base
.id
);
439 mutex_unlock(&dev
->mode_config
.idr_mutex
);
444 static void drm_framebuffer_free(struct kref
*kref
)
446 struct drm_framebuffer
*fb
=
447 container_of(kref
, struct drm_framebuffer
, refcount
);
448 struct drm_device
*dev
= fb
->dev
;
451 * The lookup idr holds a weak reference, which has not necessarily been
452 * removed at this point. Check for that.
454 mutex_lock(&dev
->mode_config
.fb_lock
);
456 /* Mark fb as reaped and drop idr ref. */
457 __drm_framebuffer_unregister(dev
, fb
);
459 mutex_unlock(&dev
->mode_config
.fb_lock
);
461 fb
->funcs
->destroy(fb
);
464 static struct drm_framebuffer
*__drm_framebuffer_lookup(struct drm_device
*dev
,
467 struct drm_mode_object
*obj
= NULL
;
468 struct drm_framebuffer
*fb
;
470 mutex_lock(&dev
->mode_config
.idr_mutex
);
471 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
472 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_FB
) || (obj
->id
!= id
))
476 mutex_unlock(&dev
->mode_config
.idr_mutex
);
482 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
484 * @id: id of the fb object
486 * If successful, this grabs an additional reference to the framebuffer -
487 * callers need to make sure to eventually unreference the returned framebuffer
488 * again, using @drm_framebuffer_unreference.
490 struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
493 struct drm_framebuffer
*fb
;
495 mutex_lock(&dev
->mode_config
.fb_lock
);
496 fb
= __drm_framebuffer_lookup(dev
, id
);
498 if (!kref_get_unless_zero(&fb
->refcount
))
501 mutex_unlock(&dev
->mode_config
.fb_lock
);
505 EXPORT_SYMBOL(drm_framebuffer_lookup
);
508 * drm_framebuffer_unreference - unref a framebuffer
509 * @fb: framebuffer to unref
511 * This functions decrements the fb's refcount and frees it if it drops to zero.
513 void drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
515 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
516 kref_put(&fb
->refcount
, drm_framebuffer_free
);
518 EXPORT_SYMBOL(drm_framebuffer_unreference
);
521 * drm_framebuffer_reference - incr the fb refcnt
524 * This functions increments the fb's refcount.
526 void drm_framebuffer_reference(struct drm_framebuffer
*fb
)
528 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
529 kref_get(&fb
->refcount
);
531 EXPORT_SYMBOL(drm_framebuffer_reference
);
533 static void drm_framebuffer_free_bug(struct kref
*kref
)
538 static void __drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
540 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
541 kref_put(&fb
->refcount
, drm_framebuffer_free_bug
);
545 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
546 * @fb: fb to unregister
548 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
549 * those used for fbdev. Note that the caller must hold a reference of it's own,
550 * i.e. the object may not be destroyed through this call (since it'll lead to a
551 * locking inversion).
553 void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
)
555 struct drm_device
*dev
= fb
->dev
;
557 mutex_lock(&dev
->mode_config
.fb_lock
);
558 /* Mark fb as reaped and drop idr ref. */
559 __drm_framebuffer_unregister(dev
, fb
);
560 mutex_unlock(&dev
->mode_config
.fb_lock
);
562 EXPORT_SYMBOL(drm_framebuffer_unregister_private
);
565 * drm_framebuffer_cleanup - remove a framebuffer object
566 * @fb: framebuffer to remove
568 * Cleanup framebuffer. This function is intended to be used from the drivers
569 * ->destroy callback. It can also be used to clean up driver private
570 * framebuffers embedded into a larger structure.
572 * Note that this function does not remove the fb from active usuage - if it is
573 * still used anywhere, hilarity can ensue since userspace could call getfb on
574 * the id and get back -EINVAL. Obviously no concern at driver unload time.
576 * Also, the framebuffer will not be removed from the lookup idr - for
577 * user-created framebuffers this will happen in in the rmfb ioctl. For
578 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
579 * drm_framebuffer_unregister_private.
581 void drm_framebuffer_cleanup(struct drm_framebuffer
*fb
)
583 struct drm_device
*dev
= fb
->dev
;
585 mutex_lock(&dev
->mode_config
.fb_lock
);
587 dev
->mode_config
.num_fb
--;
588 mutex_unlock(&dev
->mode_config
.fb_lock
);
590 EXPORT_SYMBOL(drm_framebuffer_cleanup
);
593 * drm_framebuffer_remove - remove and unreference a framebuffer object
594 * @fb: framebuffer to remove
596 * Scans all the CRTCs and planes in @dev's mode_config. If they're
597 * using @fb, removes it, setting it to NULL. Then drops the reference to the
598 * passed-in framebuffer. Might take the modeset locks.
600 * Note that this function optimizes the cleanup away if the caller holds the
601 * last reference to the framebuffer. It is also guaranteed to not take the
602 * modeset locks in this case.
604 void drm_framebuffer_remove(struct drm_framebuffer
*fb
)
606 struct drm_device
*dev
= fb
->dev
;
607 struct drm_crtc
*crtc
;
608 struct drm_plane
*plane
;
609 struct drm_mode_set set
;
612 WARN_ON(!list_empty(&fb
->filp_head
));
615 * drm ABI mandates that we remove any deleted framebuffers from active
616 * useage. But since most sane clients only remove framebuffers they no
617 * longer need, try to optimize this away.
619 * Since we're holding a reference ourselves, observing a refcount of 1
620 * means that we're the last holder and can skip it. Also, the refcount
621 * can never increase from 1 again, so we don't need any barriers or
624 * Note that userspace could try to race with use and instate a new
625 * usage _after_ we've cleared all current ones. End result will be an
626 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
629 if (atomic_read(&fb
->refcount
.refcount
) > 1) {
630 drm_modeset_lock_all(dev
);
631 /* remove from any CRTC */
632 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
633 if (crtc
->primary
->fb
== fb
) {
634 /* should turn off the crtc */
635 memset(&set
, 0, sizeof(struct drm_mode_set
));
638 ret
= drm_mode_set_config_internal(&set
);
640 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc
);
644 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
) {
646 drm_plane_force_disable(plane
);
648 drm_modeset_unlock_all(dev
);
651 drm_framebuffer_unreference(fb
);
653 EXPORT_SYMBOL(drm_framebuffer_remove
);
655 DEFINE_WW_CLASS(crtc_ww_class
);
658 * drm_crtc_init_with_planes - Initialise a new CRTC object with
659 * specified primary and cursor planes.
661 * @crtc: CRTC object to init
662 * @primary: Primary plane for CRTC
663 * @cursor: Cursor plane for CRTC
664 * @funcs: callbacks for the new CRTC
666 * Inits a new object created as base part of a driver crtc object.
669 * Zero on success, error code on failure.
671 int drm_crtc_init_with_planes(struct drm_device
*dev
, struct drm_crtc
*crtc
,
672 struct drm_plane
*primary
,
673 struct drm_plane
*cursor
,
674 const struct drm_crtc_funcs
*funcs
)
676 struct drm_mode_config
*config
= &dev
->mode_config
;
681 crtc
->invert_dimensions
= false;
683 drm_modeset_lock_init(&crtc
->mutex
);
684 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
688 crtc
->base
.properties
= &crtc
->properties
;
690 list_add_tail(&crtc
->head
, &config
->crtc_list
);
693 crtc
->primary
= primary
;
694 crtc
->cursor
= cursor
;
696 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
698 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
704 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
707 * drm_crtc_cleanup - Clean up the core crtc usage
708 * @crtc: CRTC to cleanup
710 * This function cleans up @crtc and removes it from the DRM mode setting
711 * core. Note that the function does *not* free the crtc structure itself,
712 * this is the responsibility of the caller.
714 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
716 struct drm_device
*dev
= crtc
->dev
;
718 kfree(crtc
->gamma_store
);
719 crtc
->gamma_store
= NULL
;
721 drm_modeset_lock_fini(&crtc
->mutex
);
723 drm_mode_object_put(dev
, &crtc
->base
);
724 list_del(&crtc
->head
);
725 dev
->mode_config
.num_crtc
--;
727 EXPORT_SYMBOL(drm_crtc_cleanup
);
730 * drm_crtc_index - find the index of a registered CRTC
731 * @crtc: CRTC to find index for
733 * Given a registered CRTC, return the index of that CRTC within a DRM
734 * device's list of CRTCs.
736 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
738 unsigned int index
= 0;
739 struct drm_crtc
*tmp
;
741 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
750 EXPORT_SYMBOL(drm_crtc_index
);
753 * drm_mode_remove - remove and free a mode
754 * @connector: connector list to modify
755 * @mode: mode to remove
757 * Remove @mode from @connector's mode list, then free it.
759 static void drm_mode_remove(struct drm_connector
*connector
,
760 struct drm_display_mode
*mode
)
762 list_del(&mode
->head
);
763 drm_mode_destroy(connector
->dev
, mode
);
767 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
768 * @connector: connector to quwery
770 * The kernel supports per-connector configration of its consoles through
771 * use of the video= parameter. This function parses that option and
772 * extracts the user's specified mode (or enable/disable status) for a
773 * particular connector. This is typically only used during the early fbdev
776 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
778 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
781 if (fb_get_options(connector
->name
, &option
))
784 if (!drm_mode_parse_command_line_for_connector(option
,
792 switch (mode
->force
) {
796 case DRM_FORCE_ON_DIGITAL
:
805 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
806 connector
->force
= mode
->force
;
809 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
811 mode
->xres
, mode
->yres
,
812 mode
->refresh_specified
? mode
->refresh
: 60,
813 mode
->rb
? " reduced blanking" : "",
814 mode
->margins
? " with margins" : "",
815 mode
->interlace
? " interlaced" : "");
819 * drm_connector_init - Init a preallocated connector
821 * @connector: the connector to init
822 * @funcs: callbacks for this connector
823 * @connector_type: user visible type of the connector
825 * Initialises a preallocated connector. Connectors should be
826 * subclassed as part of driver connector objects.
829 * Zero on success, error code on failure.
831 int drm_connector_init(struct drm_device
*dev
,
832 struct drm_connector
*connector
,
833 const struct drm_connector_funcs
*funcs
,
837 struct ida
*connector_ida
=
838 &drm_connector_enum_list
[connector_type
].ida
;
840 drm_modeset_lock_all(dev
);
842 ret
= drm_mode_object_get_reg(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
, false);
846 connector
->base
.properties
= &connector
->properties
;
847 connector
->dev
= dev
;
848 connector
->funcs
= funcs
;
849 connector
->connector_type
= connector_type
;
850 connector
->connector_type_id
=
851 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
852 if (connector
->connector_type_id
< 0) {
853 ret
= connector
->connector_type_id
;
857 kasprintf(GFP_KERNEL
, "%s-%d",
858 drm_connector_enum_list
[connector_type
].name
,
859 connector
->connector_type_id
);
860 if (!connector
->name
) {
865 INIT_LIST_HEAD(&connector
->probed_modes
);
866 INIT_LIST_HEAD(&connector
->modes
);
867 connector
->edid_blob_ptr
= NULL
;
868 connector
->status
= connector_status_unknown
;
870 drm_connector_get_cmdline_mode(connector
);
872 list_add_tail(&connector
->head
, &dev
->mode_config
.connector_list
);
873 dev
->mode_config
.num_connector
++;
875 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
876 drm_object_attach_property(&connector
->base
,
877 dev
->mode_config
.edid_property
,
880 drm_object_attach_property(&connector
->base
,
881 dev
->mode_config
.dpms_property
, 0);
883 connector
->debugfs_entry
= NULL
;
887 drm_mode_object_put(dev
, &connector
->base
);
890 drm_modeset_unlock_all(dev
);
894 EXPORT_SYMBOL(drm_connector_init
);
897 * drm_connector_cleanup - cleans up an initialised connector
898 * @connector: connector to cleanup
900 * Cleans up the connector but doesn't free the object.
902 void drm_connector_cleanup(struct drm_connector
*connector
)
904 struct drm_device
*dev
= connector
->dev
;
905 struct drm_display_mode
*mode
, *t
;
907 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
908 drm_mode_remove(connector
, mode
);
910 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
911 drm_mode_remove(connector
, mode
);
913 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
914 connector
->connector_type_id
);
916 drm_mode_object_put(dev
, &connector
->base
);
917 kfree(connector
->name
);
918 connector
->name
= NULL
;
919 list_del(&connector
->head
);
920 dev
->mode_config
.num_connector
--;
922 EXPORT_SYMBOL(drm_connector_cleanup
);
925 * drm_connector_index - find the index of a registered connector
926 * @connector: connector to find index for
928 * Given a registered connector, return the index of that connector within a DRM
929 * device's list of connectors.
931 unsigned int drm_connector_index(struct drm_connector
*connector
)
933 unsigned int index
= 0;
934 struct drm_connector
*tmp
;
936 list_for_each_entry(tmp
, &connector
->dev
->mode_config
.connector_list
, head
) {
937 if (tmp
== connector
)
945 EXPORT_SYMBOL(drm_connector_index
);
948 * drm_connector_register - register a connector
949 * @connector: the connector to register
951 * Register userspace interfaces for a connector
954 * Zero on success, error code on failure.
956 int drm_connector_register(struct drm_connector
*connector
)
960 drm_mode_object_register(connector
->dev
, &connector
->base
);
962 ret
= drm_sysfs_connector_add(connector
);
966 ret
= drm_debugfs_connector_add(connector
);
968 drm_sysfs_connector_remove(connector
);
974 EXPORT_SYMBOL(drm_connector_register
);
977 * drm_connector_unregister - unregister a connector
978 * @connector: the connector to unregister
980 * Unregister userspace interfaces for a connector
982 void drm_connector_unregister(struct drm_connector
*connector
)
984 drm_sysfs_connector_remove(connector
);
985 drm_debugfs_connector_remove(connector
);
987 EXPORT_SYMBOL(drm_connector_unregister
);
991 * drm_connector_unplug_all - unregister connector userspace interfaces
994 * This function unregisters all connector userspace interfaces in sysfs. Should
995 * be call when the device is disconnected, e.g. from an usb driver's
996 * ->disconnect callback.
998 void drm_connector_unplug_all(struct drm_device
*dev
)
1000 struct drm_connector
*connector
;
1002 /* taking the mode config mutex ends up in a clash with sysfs */
1003 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1004 drm_connector_unregister(connector
);
1007 EXPORT_SYMBOL(drm_connector_unplug_all
);
1010 * drm_bridge_init - initialize a drm transcoder/bridge
1012 * @bridge: transcoder/bridge to set up
1013 * @funcs: bridge function table
1015 * Initialises a preallocated bridge. Bridges should be
1016 * subclassed as part of driver connector objects.
1019 * Zero on success, error code on failure.
1021 int drm_bridge_init(struct drm_device
*dev
, struct drm_bridge
*bridge
,
1022 const struct drm_bridge_funcs
*funcs
)
1026 drm_modeset_lock_all(dev
);
1028 ret
= drm_mode_object_get(dev
, &bridge
->base
, DRM_MODE_OBJECT_BRIDGE
);
1033 bridge
->funcs
= funcs
;
1035 list_add_tail(&bridge
->head
, &dev
->mode_config
.bridge_list
);
1036 dev
->mode_config
.num_bridge
++;
1039 drm_modeset_unlock_all(dev
);
1042 EXPORT_SYMBOL(drm_bridge_init
);
1045 * drm_bridge_cleanup - cleans up an initialised bridge
1046 * @bridge: bridge to cleanup
1048 * Cleans up the bridge but doesn't free the object.
1050 void drm_bridge_cleanup(struct drm_bridge
*bridge
)
1052 struct drm_device
*dev
= bridge
->dev
;
1054 drm_modeset_lock_all(dev
);
1055 drm_mode_object_put(dev
, &bridge
->base
);
1056 list_del(&bridge
->head
);
1057 dev
->mode_config
.num_bridge
--;
1058 drm_modeset_unlock_all(dev
);
1060 EXPORT_SYMBOL(drm_bridge_cleanup
);
1063 * drm_encoder_init - Init a preallocated encoder
1065 * @encoder: the encoder to init
1066 * @funcs: callbacks for this encoder
1067 * @encoder_type: user visible type of the encoder
1069 * Initialises a preallocated encoder. Encoder should be
1070 * subclassed as part of driver encoder objects.
1073 * Zero on success, error code on failure.
1075 int drm_encoder_init(struct drm_device
*dev
,
1076 struct drm_encoder
*encoder
,
1077 const struct drm_encoder_funcs
*funcs
,
1082 drm_modeset_lock_all(dev
);
1084 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1089 encoder
->encoder_type
= encoder_type
;
1090 encoder
->funcs
= funcs
;
1091 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1092 drm_encoder_enum_list
[encoder_type
].name
,
1094 if (!encoder
->name
) {
1099 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1100 dev
->mode_config
.num_encoder
++;
1104 drm_mode_object_put(dev
, &encoder
->base
);
1107 drm_modeset_unlock_all(dev
);
1111 EXPORT_SYMBOL(drm_encoder_init
);
1114 * drm_encoder_cleanup - cleans up an initialised encoder
1115 * @encoder: encoder to cleanup
1117 * Cleans up the encoder but doesn't free the object.
1119 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1121 struct drm_device
*dev
= encoder
->dev
;
1122 drm_modeset_lock_all(dev
);
1123 drm_mode_object_put(dev
, &encoder
->base
);
1124 kfree(encoder
->name
);
1125 encoder
->name
= NULL
;
1126 list_del(&encoder
->head
);
1127 dev
->mode_config
.num_encoder
--;
1128 drm_modeset_unlock_all(dev
);
1130 EXPORT_SYMBOL(drm_encoder_cleanup
);
1133 * drm_universal_plane_init - Initialize a new universal plane object
1135 * @plane: plane object to init
1136 * @possible_crtcs: bitmask of possible CRTCs
1137 * @funcs: callbacks for the new plane
1138 * @formats: array of supported formats (%DRM_FORMAT_*)
1139 * @format_count: number of elements in @formats
1140 * @type: type of plane (overlay, primary, cursor)
1142 * Initializes a plane object of type @type.
1145 * Zero on success, error code on failure.
1147 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1148 unsigned long possible_crtcs
,
1149 const struct drm_plane_funcs
*funcs
,
1150 const uint32_t *formats
, uint32_t format_count
,
1151 enum drm_plane_type type
)
1155 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1159 drm_modeset_lock_init(&plane
->mutex
);
1161 plane
->base
.properties
= &plane
->properties
;
1163 plane
->funcs
= funcs
;
1164 plane
->format_types
= kmalloc(sizeof(uint32_t) * format_count
,
1166 if (!plane
->format_types
) {
1167 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1168 drm_mode_object_put(dev
, &plane
->base
);
1173 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1174 plane
->format_count
= format_count
;
1175 plane
->possible_crtcs
= possible_crtcs
;
1178 list_add_tail(&plane
->head
, &dev
->mode_config
.plane_list
);
1179 dev
->mode_config
.num_total_plane
++;
1180 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1181 dev
->mode_config
.num_overlay_plane
++;
1183 drm_object_attach_property(&plane
->base
,
1184 dev
->mode_config
.plane_type_property
,
1191 EXPORT_SYMBOL(drm_universal_plane_init
);
1194 * drm_plane_init - Initialize a legacy plane
1196 * @plane: plane object to init
1197 * @possible_crtcs: bitmask of possible CRTCs
1198 * @funcs: callbacks for the new plane
1199 * @formats: array of supported formats (%DRM_FORMAT_*)
1200 * @format_count: number of elements in @formats
1201 * @is_primary: plane type (primary vs overlay)
1203 * Legacy API to initialize a DRM plane.
1205 * New drivers should call drm_universal_plane_init() instead.
1208 * Zero on success, error code on failure.
1210 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1211 unsigned long possible_crtcs
,
1212 const struct drm_plane_funcs
*funcs
,
1213 const uint32_t *formats
, uint32_t format_count
,
1216 enum drm_plane_type type
;
1218 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1219 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1220 formats
, format_count
, type
);
1222 EXPORT_SYMBOL(drm_plane_init
);
1225 * drm_plane_cleanup - Clean up the core plane usage
1226 * @plane: plane to cleanup
1228 * This function cleans up @plane and removes it from the DRM mode setting
1229 * core. Note that the function does *not* free the plane structure itself,
1230 * this is the responsibility of the caller.
1232 void drm_plane_cleanup(struct drm_plane
*plane
)
1234 struct drm_device
*dev
= plane
->dev
;
1236 drm_modeset_lock_all(dev
);
1237 kfree(plane
->format_types
);
1238 drm_mode_object_put(dev
, &plane
->base
);
1240 BUG_ON(list_empty(&plane
->head
));
1242 list_del(&plane
->head
);
1243 dev
->mode_config
.num_total_plane
--;
1244 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1245 dev
->mode_config
.num_overlay_plane
--;
1246 drm_modeset_unlock_all(dev
);
1248 EXPORT_SYMBOL(drm_plane_cleanup
);
1251 * drm_plane_index - find the index of a registered plane
1252 * @plane: plane to find index for
1254 * Given a registered plane, return the index of that CRTC within a DRM
1255 * device's list of planes.
1257 unsigned int drm_plane_index(struct drm_plane
*plane
)
1259 unsigned int index
= 0;
1260 struct drm_plane
*tmp
;
1262 list_for_each_entry(tmp
, &plane
->dev
->mode_config
.plane_list
, head
) {
1271 EXPORT_SYMBOL(drm_plane_index
);
1274 * drm_plane_force_disable - Forcibly disable a plane
1275 * @plane: plane to disable
1277 * Forces the plane to be disabled.
1279 * Used when the plane's current framebuffer is destroyed,
1280 * and when restoring fbdev mode.
1282 void drm_plane_force_disable(struct drm_plane
*plane
)
1289 plane
->old_fb
= plane
->fb
;
1290 ret
= plane
->funcs
->disable_plane(plane
);
1292 DRM_ERROR("failed to disable plane with busy fb\n");
1293 plane
->old_fb
= NULL
;
1296 /* disconnect the plane from the fb and crtc: */
1297 __drm_framebuffer_unreference(plane
->old_fb
);
1298 plane
->old_fb
= NULL
;
1302 EXPORT_SYMBOL(drm_plane_force_disable
);
1304 static int drm_mode_create_standard_connector_properties(struct drm_device
*dev
)
1306 struct drm_property
*edid
;
1307 struct drm_property
*dpms
;
1308 struct drm_property
*dev_path
;
1311 * Standard properties (apply to all connectors)
1313 edid
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1314 DRM_MODE_PROP_IMMUTABLE
,
1316 dev
->mode_config
.edid_property
= edid
;
1318 dpms
= drm_property_create_enum(dev
, 0,
1319 "DPMS", drm_dpms_enum_list
,
1320 ARRAY_SIZE(drm_dpms_enum_list
));
1321 dev
->mode_config
.dpms_property
= dpms
;
1323 dev_path
= drm_property_create(dev
,
1324 DRM_MODE_PROP_BLOB
|
1325 DRM_MODE_PROP_IMMUTABLE
,
1327 dev
->mode_config
.path_property
= dev_path
;
1332 static int drm_mode_create_standard_plane_properties(struct drm_device
*dev
)
1334 struct drm_property
*type
;
1337 * Standard properties (apply to all planes)
1339 type
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1340 "type", drm_plane_type_enum_list
,
1341 ARRAY_SIZE(drm_plane_type_enum_list
));
1342 dev
->mode_config
.plane_type_property
= type
;
1348 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1351 * Called by a driver the first time a DVI-I connector is made.
1353 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1355 struct drm_property
*dvi_i_selector
;
1356 struct drm_property
*dvi_i_subconnector
;
1358 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1362 drm_property_create_enum(dev
, 0,
1363 "select subconnector",
1364 drm_dvi_i_select_enum_list
,
1365 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1366 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1368 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1370 drm_dvi_i_subconnector_enum_list
,
1371 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1372 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1376 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1379 * drm_create_tv_properties - create TV specific connector properties
1381 * @num_modes: number of different TV formats (modes) supported
1382 * @modes: array of pointers to strings containing name of each format
1384 * Called by a driver's TV initialization routine, this function creates
1385 * the TV specific connector properties for a given device. Caller is
1386 * responsible for allocating a list of format names and passing them to
1389 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1390 unsigned int num_modes
,
1393 struct drm_property
*tv_selector
;
1394 struct drm_property
*tv_subconnector
;
1397 if (dev
->mode_config
.tv_select_subconnector_property
)
1401 * Basic connector properties
1403 tv_selector
= drm_property_create_enum(dev
, 0,
1404 "select subconnector",
1405 drm_tv_select_enum_list
,
1406 ARRAY_SIZE(drm_tv_select_enum_list
));
1407 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1410 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1412 drm_tv_subconnector_enum_list
,
1413 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1414 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1417 * Other, TV specific properties: margins & TV modes.
1419 dev
->mode_config
.tv_left_margin_property
=
1420 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1422 dev
->mode_config
.tv_right_margin_property
=
1423 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1425 dev
->mode_config
.tv_top_margin_property
=
1426 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1428 dev
->mode_config
.tv_bottom_margin_property
=
1429 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1431 dev
->mode_config
.tv_mode_property
=
1432 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1434 for (i
= 0; i
< num_modes
; i
++)
1435 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1438 dev
->mode_config
.tv_brightness_property
=
1439 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1441 dev
->mode_config
.tv_contrast_property
=
1442 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1444 dev
->mode_config
.tv_flicker_reduction_property
=
1445 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1447 dev
->mode_config
.tv_overscan_property
=
1448 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1450 dev
->mode_config
.tv_saturation_property
=
1451 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1453 dev
->mode_config
.tv_hue_property
=
1454 drm_property_create_range(dev
, 0, "hue", 0, 100);
1458 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1461 * drm_mode_create_scaling_mode_property - create scaling mode property
1464 * Called by a driver the first time it's needed, must be attached to desired
1467 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1469 struct drm_property
*scaling_mode
;
1471 if (dev
->mode_config
.scaling_mode_property
)
1475 drm_property_create_enum(dev
, 0, "scaling mode",
1476 drm_scaling_mode_enum_list
,
1477 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1479 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1483 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1486 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1489 * Called by a driver the first time it's needed, must be attached to desired
1493 * Zero on success, errno on failure.
1495 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1497 if (dev
->mode_config
.aspect_ratio_property
)
1500 dev
->mode_config
.aspect_ratio_property
=
1501 drm_property_create_enum(dev
, 0, "aspect ratio",
1502 drm_aspect_ratio_enum_list
,
1503 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1505 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1510 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1513 * drm_mode_create_dirty_property - create dirty property
1516 * Called by a driver the first time it's needed, must be attached to desired
1519 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1521 struct drm_property
*dirty_info
;
1523 if (dev
->mode_config
.dirty_info_property
)
1527 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1529 drm_dirty_info_enum_list
,
1530 ARRAY_SIZE(drm_dirty_info_enum_list
));
1531 dev
->mode_config
.dirty_info_property
= dirty_info
;
1535 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1537 static int drm_mode_group_init(struct drm_device
*dev
, struct drm_mode_group
*group
)
1539 uint32_t total_objects
= 0;
1541 total_objects
+= dev
->mode_config
.num_crtc
;
1542 total_objects
+= dev
->mode_config
.num_connector
;
1543 total_objects
+= dev
->mode_config
.num_encoder
;
1544 total_objects
+= dev
->mode_config
.num_bridge
;
1546 group
->id_list
= kzalloc(total_objects
* sizeof(uint32_t), GFP_KERNEL
);
1547 if (!group
->id_list
)
1550 group
->num_crtcs
= 0;
1551 group
->num_connectors
= 0;
1552 group
->num_encoders
= 0;
1553 group
->num_bridges
= 0;
1557 void drm_mode_group_destroy(struct drm_mode_group
*group
)
1559 kfree(group
->id_list
);
1560 group
->id_list
= NULL
;
1564 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1565 * the drm core's responsibility to set up mode control groups.
1567 int drm_mode_group_init_legacy_group(struct drm_device
*dev
,
1568 struct drm_mode_group
*group
)
1570 struct drm_crtc
*crtc
;
1571 struct drm_encoder
*encoder
;
1572 struct drm_connector
*connector
;
1573 struct drm_bridge
*bridge
;
1576 if ((ret
= drm_mode_group_init(dev
, group
)))
1579 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
1580 group
->id_list
[group
->num_crtcs
++] = crtc
->base
.id
;
1582 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
1583 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
++] =
1586 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1587 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1588 group
->num_connectors
++] = connector
->base
.id
;
1590 list_for_each_entry(bridge
, &dev
->mode_config
.bridge_list
, head
)
1591 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1592 group
->num_connectors
+ group
->num_bridges
++] =
1597 EXPORT_SYMBOL(drm_mode_group_init_legacy_group
);
1599 void drm_reinit_primary_mode_group(struct drm_device
*dev
)
1601 drm_modeset_lock_all(dev
);
1602 drm_mode_group_destroy(&dev
->primary
->mode_group
);
1603 drm_mode_group_init_legacy_group(dev
, &dev
->primary
->mode_group
);
1604 drm_modeset_unlock_all(dev
);
1606 EXPORT_SYMBOL(drm_reinit_primary_mode_group
);
1609 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1610 * @out: drm_mode_modeinfo struct to return to the user
1611 * @in: drm_display_mode to use
1613 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1616 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo
*out
,
1617 const struct drm_display_mode
*in
)
1619 WARN(in
->hdisplay
> USHRT_MAX
|| in
->hsync_start
> USHRT_MAX
||
1620 in
->hsync_end
> USHRT_MAX
|| in
->htotal
> USHRT_MAX
||
1621 in
->hskew
> USHRT_MAX
|| in
->vdisplay
> USHRT_MAX
||
1622 in
->vsync_start
> USHRT_MAX
|| in
->vsync_end
> USHRT_MAX
||
1623 in
->vtotal
> USHRT_MAX
|| in
->vscan
> USHRT_MAX
,
1624 "timing values too large for mode info\n");
1626 out
->clock
= in
->clock
;
1627 out
->hdisplay
= in
->hdisplay
;
1628 out
->hsync_start
= in
->hsync_start
;
1629 out
->hsync_end
= in
->hsync_end
;
1630 out
->htotal
= in
->htotal
;
1631 out
->hskew
= in
->hskew
;
1632 out
->vdisplay
= in
->vdisplay
;
1633 out
->vsync_start
= in
->vsync_start
;
1634 out
->vsync_end
= in
->vsync_end
;
1635 out
->vtotal
= in
->vtotal
;
1636 out
->vscan
= in
->vscan
;
1637 out
->vrefresh
= in
->vrefresh
;
1638 out
->flags
= in
->flags
;
1639 out
->type
= in
->type
;
1640 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1641 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1645 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1646 * @out: drm_display_mode to return to the user
1647 * @in: drm_mode_modeinfo to use
1649 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1653 * Zero on success, errno on failure.
1655 static int drm_crtc_convert_umode(struct drm_display_mode
*out
,
1656 const struct drm_mode_modeinfo
*in
)
1658 if (in
->clock
> INT_MAX
|| in
->vrefresh
> INT_MAX
)
1661 if ((in
->flags
& DRM_MODE_FLAG_3D_MASK
) > DRM_MODE_FLAG_3D_MAX
)
1664 out
->clock
= in
->clock
;
1665 out
->hdisplay
= in
->hdisplay
;
1666 out
->hsync_start
= in
->hsync_start
;
1667 out
->hsync_end
= in
->hsync_end
;
1668 out
->htotal
= in
->htotal
;
1669 out
->hskew
= in
->hskew
;
1670 out
->vdisplay
= in
->vdisplay
;
1671 out
->vsync_start
= in
->vsync_start
;
1672 out
->vsync_end
= in
->vsync_end
;
1673 out
->vtotal
= in
->vtotal
;
1674 out
->vscan
= in
->vscan
;
1675 out
->vrefresh
= in
->vrefresh
;
1676 out
->flags
= in
->flags
;
1677 out
->type
= in
->type
;
1678 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1679 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1685 * drm_mode_getresources - get graphics configuration
1686 * @dev: drm device for the ioctl
1687 * @data: data pointer for the ioctl
1688 * @file_priv: drm file for the ioctl call
1690 * Construct a set of configuration description structures and return
1691 * them to the user, including CRTC, connector and framebuffer configuration.
1693 * Called by the user via ioctl.
1696 * Zero on success, errno on failure.
1698 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1699 struct drm_file
*file_priv
)
1701 struct drm_mode_card_res
*card_res
= data
;
1702 struct list_head
*lh
;
1703 struct drm_framebuffer
*fb
;
1704 struct drm_connector
*connector
;
1705 struct drm_crtc
*crtc
;
1706 struct drm_encoder
*encoder
;
1708 int connector_count
= 0;
1711 int encoder_count
= 0;
1713 uint32_t __user
*fb_id
;
1714 uint32_t __user
*crtc_id
;
1715 uint32_t __user
*connector_id
;
1716 uint32_t __user
*encoder_id
;
1717 struct drm_mode_group
*mode_group
;
1719 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1723 mutex_lock(&file_priv
->fbs_lock
);
1725 * For the non-control nodes we need to limit the list of resources
1726 * by IDs in the group list for this node
1728 list_for_each(lh
, &file_priv
->fbs
)
1731 /* handle this in 4 parts */
1733 if (card_res
->count_fbs
>= fb_count
) {
1735 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1736 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1737 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1738 mutex_unlock(&file_priv
->fbs_lock
);
1744 card_res
->count_fbs
= fb_count
;
1745 mutex_unlock(&file_priv
->fbs_lock
);
1747 /* mode_config.mutex protects the connector list against e.g. DP MST
1748 * connector hot-adding. CRTC/Plane lists are invariant. */
1749 mutex_lock(&dev
->mode_config
.mutex
);
1750 if (!drm_is_primary_client(file_priv
)) {
1753 list_for_each(lh
, &dev
->mode_config
.crtc_list
)
1756 list_for_each(lh
, &dev
->mode_config
.connector_list
)
1759 list_for_each(lh
, &dev
->mode_config
.encoder_list
)
1763 mode_group
= &file_priv
->master
->minor
->mode_group
;
1764 crtc_count
= mode_group
->num_crtcs
;
1765 connector_count
= mode_group
->num_connectors
;
1766 encoder_count
= mode_group
->num_encoders
;
1769 card_res
->max_height
= dev
->mode_config
.max_height
;
1770 card_res
->min_height
= dev
->mode_config
.min_height
;
1771 card_res
->max_width
= dev
->mode_config
.max_width
;
1772 card_res
->min_width
= dev
->mode_config
.min_width
;
1775 if (card_res
->count_crtcs
>= crtc_count
) {
1777 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1779 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
,
1781 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1782 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1789 for (i
= 0; i
< mode_group
->num_crtcs
; i
++) {
1790 if (put_user(mode_group
->id_list
[i
],
1791 crtc_id
+ copied
)) {
1799 card_res
->count_crtcs
= crtc_count
;
1802 if (card_res
->count_encoders
>= encoder_count
) {
1804 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1806 list_for_each_entry(encoder
,
1807 &dev
->mode_config
.encoder_list
,
1809 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1811 if (put_user(encoder
->base
.id
, encoder_id
+
1819 for (i
= mode_group
->num_crtcs
; i
< mode_group
->num_crtcs
+ mode_group
->num_encoders
; i
++) {
1820 if (put_user(mode_group
->id_list
[i
],
1821 encoder_id
+ copied
)) {
1830 card_res
->count_encoders
= encoder_count
;
1833 if (card_res
->count_connectors
>= connector_count
) {
1835 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1837 list_for_each_entry(connector
,
1838 &dev
->mode_config
.connector_list
,
1840 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1843 if (put_user(connector
->base
.id
,
1844 connector_id
+ copied
)) {
1851 int start
= mode_group
->num_crtcs
+
1852 mode_group
->num_encoders
;
1853 for (i
= start
; i
< start
+ mode_group
->num_connectors
; i
++) {
1854 if (put_user(mode_group
->id_list
[i
],
1855 connector_id
+ copied
)) {
1863 card_res
->count_connectors
= connector_count
;
1865 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1866 card_res
->count_connectors
, card_res
->count_encoders
);
1869 mutex_unlock(&dev
->mode_config
.mutex
);
1874 * drm_mode_getcrtc - get CRTC configuration
1875 * @dev: drm device for the ioctl
1876 * @data: data pointer for the ioctl
1877 * @file_priv: drm file for the ioctl call
1879 * Construct a CRTC configuration structure to return to the user.
1881 * Called by the user via ioctl.
1884 * Zero on success, errno on failure.
1886 int drm_mode_getcrtc(struct drm_device
*dev
,
1887 void *data
, struct drm_file
*file_priv
)
1889 struct drm_mode_crtc
*crtc_resp
= data
;
1890 struct drm_crtc
*crtc
;
1893 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1896 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
1900 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
1901 crtc_resp
->x
= crtc
->x
;
1902 crtc_resp
->y
= crtc
->y
;
1903 crtc_resp
->gamma_size
= crtc
->gamma_size
;
1904 if (crtc
->primary
->fb
)
1905 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
1907 crtc_resp
->fb_id
= 0;
1909 if (crtc
->enabled
) {
1911 drm_crtc_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
1912 crtc_resp
->mode_valid
= 1;
1915 crtc_resp
->mode_valid
= 0;
1917 drm_modeset_unlock_crtc(crtc
);
1922 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1923 const struct drm_file
*file_priv
)
1926 * If user-space hasn't configured the driver to expose the stereo 3D
1927 * modes, don't expose them.
1929 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
1936 * drm_mode_getconnector - get connector configuration
1937 * @dev: drm device for the ioctl
1938 * @data: data pointer for the ioctl
1939 * @file_priv: drm file for the ioctl call
1941 * Construct a connector configuration structure to return to the user.
1943 * Called by the user via ioctl.
1946 * Zero on success, errno on failure.
1948 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
1949 struct drm_file
*file_priv
)
1951 struct drm_mode_get_connector
*out_resp
= data
;
1952 struct drm_connector
*connector
;
1953 struct drm_display_mode
*mode
;
1955 int props_count
= 0;
1956 int encoders_count
= 0;
1960 struct drm_mode_modeinfo u_mode
;
1961 struct drm_mode_modeinfo __user
*mode_ptr
;
1962 uint32_t __user
*prop_ptr
;
1963 uint64_t __user
*prop_values
;
1964 uint32_t __user
*encoder_ptr
;
1966 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1969 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
1971 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
1973 mutex_lock(&dev
->mode_config
.mutex
);
1975 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
1981 props_count
= connector
->properties
.count
;
1983 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
1984 if (connector
->encoder_ids
[i
] != 0) {
1989 if (out_resp
->count_modes
== 0) {
1990 connector
->funcs
->fill_modes(connector
,
1991 dev
->mode_config
.max_width
,
1992 dev
->mode_config
.max_height
);
1995 /* delayed so we get modes regardless of pre-fill_modes state */
1996 list_for_each_entry(mode
, &connector
->modes
, head
)
1997 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2000 out_resp
->connector_id
= connector
->base
.id
;
2001 out_resp
->connector_type
= connector
->connector_type
;
2002 out_resp
->connector_type_id
= connector
->connector_type_id
;
2003 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2004 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2005 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2006 out_resp
->connection
= connector
->status
;
2007 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2008 if (connector
->encoder
)
2009 out_resp
->encoder_id
= connector
->encoder
->base
.id
;
2011 out_resp
->encoder_id
= 0;
2012 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2015 * This ioctl is called twice, once to determine how much space is
2016 * needed, and the 2nd time to fill it.
2018 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2020 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2021 list_for_each_entry(mode
, &connector
->modes
, head
) {
2022 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2025 drm_crtc_convert_to_umode(&u_mode
, mode
);
2026 if (copy_to_user(mode_ptr
+ copied
,
2027 &u_mode
, sizeof(u_mode
))) {
2034 out_resp
->count_modes
= mode_count
;
2036 if ((out_resp
->count_props
>= props_count
) && props_count
) {
2038 prop_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
);
2039 prop_values
= (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
);
2040 for (i
= 0; i
< connector
->properties
.count
; i
++) {
2041 if (put_user(connector
->properties
.ids
[i
],
2042 prop_ptr
+ copied
)) {
2047 if (put_user(connector
->properties
.values
[i
],
2048 prop_values
+ copied
)) {
2055 out_resp
->count_props
= props_count
;
2057 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2059 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2060 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2061 if (connector
->encoder_ids
[i
] != 0) {
2062 if (put_user(connector
->encoder_ids
[i
],
2063 encoder_ptr
+ copied
)) {
2071 out_resp
->count_encoders
= encoders_count
;
2074 mutex_unlock(&dev
->mode_config
.mutex
);
2080 * drm_mode_getencoder - get encoder configuration
2081 * @dev: drm device for the ioctl
2082 * @data: data pointer for the ioctl
2083 * @file_priv: drm file for the ioctl call
2085 * Construct a encoder configuration structure to return to the user.
2087 * Called by the user via ioctl.
2090 * Zero on success, errno on failure.
2092 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2093 struct drm_file
*file_priv
)
2095 struct drm_mode_get_encoder
*enc_resp
= data
;
2096 struct drm_encoder
*encoder
;
2099 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2102 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2106 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2108 enc_resp
->crtc_id
= encoder
->crtc
->base
.id
;
2110 enc_resp
->crtc_id
= 0;
2111 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2113 enc_resp
->encoder_type
= encoder
->encoder_type
;
2114 enc_resp
->encoder_id
= encoder
->base
.id
;
2115 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2116 enc_resp
->possible_clones
= encoder
->possible_clones
;
2122 * drm_mode_getplane_res - enumerate all plane resources
2125 * @file_priv: DRM file info
2127 * Construct a list of plane ids to return to the user.
2129 * Called by the user via ioctl.
2132 * Zero on success, errno on failure.
2134 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2135 struct drm_file
*file_priv
)
2137 struct drm_mode_get_plane_res
*plane_resp
= data
;
2138 struct drm_mode_config
*config
;
2139 struct drm_plane
*plane
;
2140 uint32_t __user
*plane_ptr
;
2142 unsigned num_planes
;
2144 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2147 config
= &dev
->mode_config
;
2149 if (file_priv
->universal_planes
)
2150 num_planes
= config
->num_total_plane
;
2152 num_planes
= config
->num_overlay_plane
;
2155 * This ioctl is called twice, once to determine how much space is
2156 * needed, and the 2nd time to fill it.
2159 (plane_resp
->count_planes
>= num_planes
)) {
2160 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2162 /* Plane lists are invariant, no locking needed. */
2163 list_for_each_entry(plane
, &config
->plane_list
, head
) {
2165 * Unless userspace set the 'universal planes'
2166 * capability bit, only advertise overlays.
2168 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2169 !file_priv
->universal_planes
)
2172 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2177 plane_resp
->count_planes
= num_planes
;
2183 * drm_mode_getplane - get plane configuration
2186 * @file_priv: DRM file info
2188 * Construct a plane configuration structure to return to the user.
2190 * Called by the user via ioctl.
2193 * Zero on success, errno on failure.
2195 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2196 struct drm_file
*file_priv
)
2198 struct drm_mode_get_plane
*plane_resp
= data
;
2199 struct drm_plane
*plane
;
2200 uint32_t __user
*format_ptr
;
2203 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2206 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2210 drm_modeset_lock(&plane
->mutex
, NULL
);
2212 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2214 plane_resp
->crtc_id
= 0;
2217 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2219 plane_resp
->fb_id
= 0;
2220 drm_modeset_unlock(&plane
->mutex
);
2222 plane_resp
->plane_id
= plane
->base
.id
;
2223 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2224 plane_resp
->gamma_size
= 0;
2227 * This ioctl is called twice, once to determine how much space is
2228 * needed, and the 2nd time to fill it.
2230 if (plane
->format_count
&&
2231 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2232 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2233 if (copy_to_user(format_ptr
,
2234 plane
->format_types
,
2235 sizeof(uint32_t) * plane
->format_count
)) {
2239 plane_resp
->count_format_types
= plane
->format_count
;
2245 * setplane_internal - setplane handler for internal callers
2247 * Note that we assume an extra reference has already been taken on fb. If the
2248 * update fails, this reference will be dropped before return; if it succeeds,
2249 * the previous framebuffer (if any) will be unreferenced instead.
2251 * src_{x,y,w,h} are provided in 16.16 fixed point format
2253 static int __setplane_internal(struct drm_plane
*plane
,
2254 struct drm_crtc
*crtc
,
2255 struct drm_framebuffer
*fb
,
2256 int32_t crtc_x
, int32_t crtc_y
,
2257 uint32_t crtc_w
, uint32_t crtc_h
,
2258 /* src_{x,y,w,h} values are 16.16 fixed point */
2259 uint32_t src_x
, uint32_t src_y
,
2260 uint32_t src_w
, uint32_t src_h
)
2263 unsigned int fb_width
, fb_height
;
2266 /* No fb means shut it down */
2268 plane
->old_fb
= plane
->fb
;
2269 ret
= plane
->funcs
->disable_plane(plane
);
2274 plane
->old_fb
= NULL
;
2279 /* Check whether this plane is usable on this CRTC */
2280 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2281 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2286 /* Check whether this plane supports the fb pixel format. */
2287 for (i
= 0; i
< plane
->format_count
; i
++)
2288 if (fb
->pixel_format
== plane
->format_types
[i
])
2290 if (i
== plane
->format_count
) {
2291 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2292 drm_get_format_name(fb
->pixel_format
));
2297 fb_width
= fb
->width
<< 16;
2298 fb_height
= fb
->height
<< 16;
2300 /* Make sure source coordinates are inside the fb. */
2301 if (src_w
> fb_width
||
2302 src_x
> fb_width
- src_w
||
2303 src_h
> fb_height
||
2304 src_y
> fb_height
- src_h
) {
2305 DRM_DEBUG_KMS("Invalid source coordinates "
2306 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2307 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2308 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2309 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2310 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2315 plane
->old_fb
= plane
->fb
;
2316 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2317 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2318 src_x
, src_y
, src_w
, src_h
);
2324 plane
->old_fb
= NULL
;
2329 drm_framebuffer_unreference(fb
);
2331 drm_framebuffer_unreference(plane
->old_fb
);
2332 plane
->old_fb
= NULL
;
2337 static int setplane_internal(struct drm_plane
*plane
,
2338 struct drm_crtc
*crtc
,
2339 struct drm_framebuffer
*fb
,
2340 int32_t crtc_x
, int32_t crtc_y
,
2341 uint32_t crtc_w
, uint32_t crtc_h
,
2342 /* src_{x,y,w,h} values are 16.16 fixed point */
2343 uint32_t src_x
, uint32_t src_y
,
2344 uint32_t src_w
, uint32_t src_h
)
2348 drm_modeset_lock_all(plane
->dev
);
2349 ret
= __setplane_internal(plane
, crtc
, fb
,
2350 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2351 src_x
, src_y
, src_w
, src_h
);
2352 drm_modeset_unlock_all(plane
->dev
);
2358 * drm_mode_setplane - configure a plane's configuration
2360 * @data: ioctl data*
2361 * @file_priv: DRM file info
2363 * Set plane configuration, including placement, fb, scaling, and other factors.
2364 * Or pass a NULL fb to disable (planes may be disabled without providing a
2368 * Zero on success, errno on failure.
2370 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2371 struct drm_file
*file_priv
)
2373 struct drm_mode_set_plane
*plane_req
= data
;
2374 struct drm_mode_object
*obj
;
2375 struct drm_plane
*plane
;
2376 struct drm_crtc
*crtc
= NULL
;
2377 struct drm_framebuffer
*fb
= NULL
;
2379 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2382 /* Give drivers some help against integer overflows */
2383 if (plane_req
->crtc_w
> INT_MAX
||
2384 plane_req
->crtc_x
> INT_MAX
- (int32_t) plane_req
->crtc_w
||
2385 plane_req
->crtc_h
> INT_MAX
||
2386 plane_req
->crtc_y
> INT_MAX
- (int32_t) plane_req
->crtc_h
) {
2387 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2388 plane_req
->crtc_w
, plane_req
->crtc_h
,
2389 plane_req
->crtc_x
, plane_req
->crtc_y
);
2394 * First, find the plane, crtc, and fb objects. If not available,
2395 * we don't bother to call the driver.
2397 obj
= drm_mode_object_find(dev
, plane_req
->plane_id
,
2398 DRM_MODE_OBJECT_PLANE
);
2400 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2401 plane_req
->plane_id
);
2404 plane
= obj_to_plane(obj
);
2406 if (plane_req
->fb_id
) {
2407 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2409 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2414 obj
= drm_mode_object_find(dev
, plane_req
->crtc_id
,
2415 DRM_MODE_OBJECT_CRTC
);
2417 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2418 plane_req
->crtc_id
);
2421 crtc
= obj_to_crtc(obj
);
2425 * setplane_internal will take care of deref'ing either the old or new
2426 * framebuffer depending on success.
2428 return setplane_internal(plane
, crtc
, fb
,
2429 plane_req
->crtc_x
, plane_req
->crtc_y
,
2430 plane_req
->crtc_w
, plane_req
->crtc_h
,
2431 plane_req
->src_x
, plane_req
->src_y
,
2432 plane_req
->src_w
, plane_req
->src_h
);
2436 * drm_mode_set_config_internal - helper to call ->set_config
2437 * @set: modeset config to set
2439 * This is a little helper to wrap internal calls to the ->set_config driver
2440 * interface. The only thing it adds is correct refcounting dance.
2443 * Zero on success, errno on failure.
2445 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2447 struct drm_crtc
*crtc
= set
->crtc
;
2448 struct drm_framebuffer
*fb
;
2449 struct drm_crtc
*tmp
;
2453 * NOTE: ->set_config can also disable other crtcs (if we steal all
2454 * connectors from it), hence we need to refcount the fbs across all
2455 * crtcs. Atomic modeset will have saner semantics ...
2457 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
)
2458 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2462 ret
= crtc
->funcs
->set_config(set
);
2464 crtc
->primary
->crtc
= crtc
;
2465 crtc
->primary
->fb
= fb
;
2468 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
2469 if (tmp
->primary
->fb
)
2470 drm_framebuffer_reference(tmp
->primary
->fb
);
2471 if (tmp
->primary
->old_fb
)
2472 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2473 tmp
->primary
->old_fb
= NULL
;
2478 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2481 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2483 * @crtc: CRTC that framebuffer will be displayed on
2486 * @mode: mode that framebuffer will be displayed under
2487 * @fb: framebuffer to check size of
2489 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2491 const struct drm_display_mode
*mode
,
2492 const struct drm_framebuffer
*fb
)
2495 int hdisplay
, vdisplay
;
2497 hdisplay
= mode
->hdisplay
;
2498 vdisplay
= mode
->vdisplay
;
2500 if (drm_mode_is_stereo(mode
)) {
2501 struct drm_display_mode adjusted
= *mode
;
2503 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE
);
2504 hdisplay
= adjusted
.crtc_hdisplay
;
2505 vdisplay
= adjusted
.crtc_vdisplay
;
2508 if (crtc
->invert_dimensions
)
2509 swap(hdisplay
, vdisplay
);
2511 if (hdisplay
> fb
->width
||
2512 vdisplay
> fb
->height
||
2513 x
> fb
->width
- hdisplay
||
2514 y
> fb
->height
- vdisplay
) {
2515 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2516 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2517 crtc
->invert_dimensions
? " (inverted)" : "");
2523 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2526 * drm_mode_setcrtc - set CRTC configuration
2527 * @dev: drm device for the ioctl
2528 * @data: data pointer for the ioctl
2529 * @file_priv: drm file for the ioctl call
2531 * Build a new CRTC configuration based on user request.
2533 * Called by the user via ioctl.
2536 * Zero on success, errno on failure.
2538 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2539 struct drm_file
*file_priv
)
2541 struct drm_mode_config
*config
= &dev
->mode_config
;
2542 struct drm_mode_crtc
*crtc_req
= data
;
2543 struct drm_crtc
*crtc
;
2544 struct drm_connector
**connector_set
= NULL
, *connector
;
2545 struct drm_framebuffer
*fb
= NULL
;
2546 struct drm_display_mode
*mode
= NULL
;
2547 struct drm_mode_set set
;
2548 uint32_t __user
*set_connectors_ptr
;
2552 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2555 /* For some reason crtc x/y offsets are signed internally. */
2556 if (crtc_req
->x
> INT_MAX
|| crtc_req
->y
> INT_MAX
)
2559 drm_modeset_lock_all(dev
);
2560 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2562 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2566 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2568 if (crtc_req
->mode_valid
) {
2569 /* If we have a mode we need a framebuffer. */
2570 /* If we pass -1, set the mode with the currently bound fb */
2571 if (crtc_req
->fb_id
== -1) {
2572 if (!crtc
->primary
->fb
) {
2573 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2577 fb
= crtc
->primary
->fb
;
2578 /* Make refcounting symmetric with the lookup path. */
2579 drm_framebuffer_reference(fb
);
2581 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2583 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2590 mode
= drm_mode_create(dev
);
2596 ret
= drm_crtc_convert_umode(mode
, &crtc_req
->mode
);
2598 DRM_DEBUG_KMS("Invalid mode\n");
2602 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2604 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2611 if (crtc_req
->count_connectors
== 0 && mode
) {
2612 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2617 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2618 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2619 crtc_req
->count_connectors
);
2624 if (crtc_req
->count_connectors
> 0) {
2627 /* Avoid unbounded kernel memory allocation */
2628 if (crtc_req
->count_connectors
> config
->num_connector
) {
2633 connector_set
= kmalloc(crtc_req
->count_connectors
*
2634 sizeof(struct drm_connector
*),
2636 if (!connector_set
) {
2641 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2642 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2643 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2648 connector
= drm_connector_find(dev
, out_id
);
2650 DRM_DEBUG_KMS("Connector id %d unknown\n",
2655 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2659 connector_set
[i
] = connector
;
2664 set
.x
= crtc_req
->x
;
2665 set
.y
= crtc_req
->y
;
2667 set
.connectors
= connector_set
;
2668 set
.num_connectors
= crtc_req
->count_connectors
;
2670 ret
= drm_mode_set_config_internal(&set
);
2674 drm_framebuffer_unreference(fb
);
2676 kfree(connector_set
);
2677 drm_mode_destroy(dev
, mode
);
2678 drm_modeset_unlock_all(dev
);
2683 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2684 * universal plane handler call
2685 * @crtc: crtc to update cursor for
2686 * @req: data pointer for the ioctl
2687 * @file_priv: drm file for the ioctl call
2689 * Legacy cursor ioctl's work directly with driver buffer handles. To
2690 * translate legacy ioctl calls into universal plane handler calls, we need to
2691 * wrap the native buffer handle in a drm_framebuffer.
2693 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2694 * buffer with a pitch of 4*width; the universal plane interface should be used
2695 * directly in cases where the hardware can support other buffer settings and
2696 * userspace wants to make use of these capabilities.
2699 * Zero on success, errno on failure.
2701 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2702 struct drm_mode_cursor2
*req
,
2703 struct drm_file
*file_priv
)
2705 struct drm_device
*dev
= crtc
->dev
;
2706 struct drm_framebuffer
*fb
= NULL
;
2707 struct drm_mode_fb_cmd2 fbreq
= {
2708 .width
= req
->width
,
2709 .height
= req
->height
,
2710 .pixel_format
= DRM_FORMAT_ARGB8888
,
2711 .pitches
= { req
->width
* 4 },
2712 .handles
= { req
->handle
},
2714 int32_t crtc_x
, crtc_y
;
2715 uint32_t crtc_w
= 0, crtc_h
= 0;
2716 uint32_t src_w
= 0, src_h
= 0;
2719 BUG_ON(!crtc
->cursor
);
2720 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2723 * Obtain fb we'll be using (either new or existing) and take an extra
2724 * reference to it if fb != null. setplane will take care of dropping
2725 * the reference if the plane update fails.
2727 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2729 fb
= add_framebuffer_internal(dev
, &fbreq
, file_priv
);
2731 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2735 drm_framebuffer_reference(fb
);
2740 fb
= crtc
->cursor
->fb
;
2742 drm_framebuffer_reference(fb
);
2745 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2749 crtc_x
= crtc
->cursor_x
;
2750 crtc_y
= crtc
->cursor_y
;
2755 crtc_h
= fb
->height
;
2756 src_w
= fb
->width
<< 16;
2757 src_h
= fb
->height
<< 16;
2761 * setplane_internal will take care of deref'ing either the old or new
2762 * framebuffer depending on success.
2764 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2765 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2766 0, 0, src_w
, src_h
);
2768 /* Update successful; save new cursor position, if necessary */
2769 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2770 crtc
->cursor_x
= req
->x
;
2771 crtc
->cursor_y
= req
->y
;
2777 static int drm_mode_cursor_common(struct drm_device
*dev
,
2778 struct drm_mode_cursor2
*req
,
2779 struct drm_file
*file_priv
)
2781 struct drm_crtc
*crtc
;
2784 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2787 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2790 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2792 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2797 * If this crtc has a universal cursor plane, call that plane's update
2798 * handler rather than using legacy cursor handlers.
2800 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
2802 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2806 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2807 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2811 /* Turns off the cursor if handle is 0 */
2812 if (crtc
->funcs
->cursor_set2
)
2813 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2814 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2816 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2817 req
->width
, req
->height
);
2820 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2821 if (crtc
->funcs
->cursor_move
) {
2822 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
2829 drm_modeset_unlock_crtc(crtc
);
2837 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2838 * @dev: drm device for the ioctl
2839 * @data: data pointer for the ioctl
2840 * @file_priv: drm file for the ioctl call
2842 * Set the cursor configuration based on user request.
2844 * Called by the user via ioctl.
2847 * Zero on success, errno on failure.
2849 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
2850 void *data
, struct drm_file
*file_priv
)
2852 struct drm_mode_cursor
*req
= data
;
2853 struct drm_mode_cursor2 new_req
;
2855 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
2856 new_req
.hot_x
= new_req
.hot_y
= 0;
2858 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
2862 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2863 * @dev: drm device for the ioctl
2864 * @data: data pointer for the ioctl
2865 * @file_priv: drm file for the ioctl call
2867 * Set the cursor configuration based on user request. This implements the 2nd
2868 * version of the cursor ioctl, which allows userspace to additionally specify
2869 * the hotspot of the pointer.
2871 * Called by the user via ioctl.
2874 * Zero on success, errno on failure.
2876 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
2877 void *data
, struct drm_file
*file_priv
)
2879 struct drm_mode_cursor2
*req
= data
;
2880 return drm_mode_cursor_common(dev
, req
, file_priv
);
2884 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2885 * @bpp: bits per pixels
2886 * @depth: bit depth per pixel
2888 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2889 * Useful in fbdev emulation code, since that deals in those values.
2891 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
2897 fmt
= DRM_FORMAT_C8
;
2901 fmt
= DRM_FORMAT_XRGB1555
;
2903 fmt
= DRM_FORMAT_RGB565
;
2906 fmt
= DRM_FORMAT_RGB888
;
2910 fmt
= DRM_FORMAT_XRGB8888
;
2911 else if (depth
== 30)
2912 fmt
= DRM_FORMAT_XRGB2101010
;
2914 fmt
= DRM_FORMAT_ARGB8888
;
2917 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2918 fmt
= DRM_FORMAT_XRGB8888
;
2924 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
2927 * drm_mode_addfb - add an FB to the graphics configuration
2928 * @dev: drm device for the ioctl
2929 * @data: data pointer for the ioctl
2930 * @file_priv: drm file for the ioctl call
2932 * Add a new FB to the specified CRTC, given a user request. This is the
2933 * original addfb ioctl which only supported RGB formats.
2935 * Called by the user via ioctl.
2938 * Zero on success, errno on failure.
2940 int drm_mode_addfb(struct drm_device
*dev
,
2941 void *data
, struct drm_file
*file_priv
)
2943 struct drm_mode_fb_cmd
*or = data
;
2944 struct drm_mode_fb_cmd2 r
= {};
2947 /* convert to new format and call new ioctl */
2948 r
.fb_id
= or->fb_id
;
2949 r
.width
= or->width
;
2950 r
.height
= or->height
;
2951 r
.pitches
[0] = or->pitch
;
2952 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
2953 r
.handles
[0] = or->handle
;
2955 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
2959 or->fb_id
= r
.fb_id
;
2964 static int format_check(const struct drm_mode_fb_cmd2
*r
)
2966 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
2970 case DRM_FORMAT_RGB332
:
2971 case DRM_FORMAT_BGR233
:
2972 case DRM_FORMAT_XRGB4444
:
2973 case DRM_FORMAT_XBGR4444
:
2974 case DRM_FORMAT_RGBX4444
:
2975 case DRM_FORMAT_BGRX4444
:
2976 case DRM_FORMAT_ARGB4444
:
2977 case DRM_FORMAT_ABGR4444
:
2978 case DRM_FORMAT_RGBA4444
:
2979 case DRM_FORMAT_BGRA4444
:
2980 case DRM_FORMAT_XRGB1555
:
2981 case DRM_FORMAT_XBGR1555
:
2982 case DRM_FORMAT_RGBX5551
:
2983 case DRM_FORMAT_BGRX5551
:
2984 case DRM_FORMAT_ARGB1555
:
2985 case DRM_FORMAT_ABGR1555
:
2986 case DRM_FORMAT_RGBA5551
:
2987 case DRM_FORMAT_BGRA5551
:
2988 case DRM_FORMAT_RGB565
:
2989 case DRM_FORMAT_BGR565
:
2990 case DRM_FORMAT_RGB888
:
2991 case DRM_FORMAT_BGR888
:
2992 case DRM_FORMAT_XRGB8888
:
2993 case DRM_FORMAT_XBGR8888
:
2994 case DRM_FORMAT_RGBX8888
:
2995 case DRM_FORMAT_BGRX8888
:
2996 case DRM_FORMAT_ARGB8888
:
2997 case DRM_FORMAT_ABGR8888
:
2998 case DRM_FORMAT_RGBA8888
:
2999 case DRM_FORMAT_BGRA8888
:
3000 case DRM_FORMAT_XRGB2101010
:
3001 case DRM_FORMAT_XBGR2101010
:
3002 case DRM_FORMAT_RGBX1010102
:
3003 case DRM_FORMAT_BGRX1010102
:
3004 case DRM_FORMAT_ARGB2101010
:
3005 case DRM_FORMAT_ABGR2101010
:
3006 case DRM_FORMAT_RGBA1010102
:
3007 case DRM_FORMAT_BGRA1010102
:
3008 case DRM_FORMAT_YUYV
:
3009 case DRM_FORMAT_YVYU
:
3010 case DRM_FORMAT_UYVY
:
3011 case DRM_FORMAT_VYUY
:
3012 case DRM_FORMAT_AYUV
:
3013 case DRM_FORMAT_NV12
:
3014 case DRM_FORMAT_NV21
:
3015 case DRM_FORMAT_NV16
:
3016 case DRM_FORMAT_NV61
:
3017 case DRM_FORMAT_NV24
:
3018 case DRM_FORMAT_NV42
:
3019 case DRM_FORMAT_YUV410
:
3020 case DRM_FORMAT_YVU410
:
3021 case DRM_FORMAT_YUV411
:
3022 case DRM_FORMAT_YVU411
:
3023 case DRM_FORMAT_YUV420
:
3024 case DRM_FORMAT_YVU420
:
3025 case DRM_FORMAT_YUV422
:
3026 case DRM_FORMAT_YVU422
:
3027 case DRM_FORMAT_YUV444
:
3028 case DRM_FORMAT_YVU444
:
3031 DRM_DEBUG_KMS("invalid pixel format %s\n",
3032 drm_get_format_name(r
->pixel_format
));
3037 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3039 int ret
, hsub
, vsub
, num_planes
, i
;
3041 ret
= format_check(r
);
3043 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3044 drm_get_format_name(r
->pixel_format
));
3048 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3049 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3050 num_planes
= drm_format_num_planes(r
->pixel_format
);
3052 if (r
->width
== 0 || r
->width
% hsub
) {
3053 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3057 if (r
->height
== 0 || r
->height
% vsub
) {
3058 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3062 for (i
= 0; i
< num_planes
; i
++) {
3063 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3064 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3065 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3067 if (!r
->handles
[i
]) {
3068 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3072 if ((uint64_t) width
* cpp
> UINT_MAX
)
3075 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3078 if (r
->pitches
[i
] < width
* cpp
) {
3079 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3087 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
3088 struct drm_mode_fb_cmd2
*r
,
3089 struct drm_file
*file_priv
)
3091 struct drm_mode_config
*config
= &dev
->mode_config
;
3092 struct drm_framebuffer
*fb
;
3095 if (r
->flags
& ~DRM_MODE_FB_INTERLACED
) {
3096 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3097 return ERR_PTR(-EINVAL
);
3100 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3101 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3102 r
->width
, config
->min_width
, config
->max_width
);
3103 return ERR_PTR(-EINVAL
);
3105 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3106 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3107 r
->height
, config
->min_height
, config
->max_height
);
3108 return ERR_PTR(-EINVAL
);
3111 ret
= framebuffer_check(r
);
3113 return ERR_PTR(ret
);
3115 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3117 DRM_DEBUG_KMS("could not create framebuffer\n");
3121 mutex_lock(&file_priv
->fbs_lock
);
3122 r
->fb_id
= fb
->base
.id
;
3123 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3124 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3125 mutex_unlock(&file_priv
->fbs_lock
);
3131 * drm_mode_addfb2 - add an FB to the graphics configuration
3132 * @dev: drm device for the ioctl
3133 * @data: data pointer for the ioctl
3134 * @file_priv: drm file for the ioctl call
3136 * Add a new FB to the specified CRTC, given a user request with format. This is
3137 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3138 * and uses fourcc codes as pixel format specifiers.
3140 * Called by the user via ioctl.
3143 * Zero on success, errno on failure.
3145 int drm_mode_addfb2(struct drm_device
*dev
,
3146 void *data
, struct drm_file
*file_priv
)
3148 struct drm_framebuffer
*fb
;
3150 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3153 fb
= add_framebuffer_internal(dev
, data
, file_priv
);
3161 * drm_mode_rmfb - remove an FB from the configuration
3162 * @dev: drm device for the ioctl
3163 * @data: data pointer for the ioctl
3164 * @file_priv: drm file for the ioctl call
3166 * Remove the FB specified by the user.
3168 * Called by the user via ioctl.
3171 * Zero on success, errno on failure.
3173 int drm_mode_rmfb(struct drm_device
*dev
,
3174 void *data
, struct drm_file
*file_priv
)
3176 struct drm_framebuffer
*fb
= NULL
;
3177 struct drm_framebuffer
*fbl
= NULL
;
3178 uint32_t *id
= data
;
3181 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3184 mutex_lock(&file_priv
->fbs_lock
);
3185 mutex_lock(&dev
->mode_config
.fb_lock
);
3186 fb
= __drm_framebuffer_lookup(dev
, *id
);
3190 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3196 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3197 __drm_framebuffer_unregister(dev
, fb
);
3199 list_del_init(&fb
->filp_head
);
3200 mutex_unlock(&dev
->mode_config
.fb_lock
);
3201 mutex_unlock(&file_priv
->fbs_lock
);
3203 drm_framebuffer_remove(fb
);
3208 mutex_unlock(&dev
->mode_config
.fb_lock
);
3209 mutex_unlock(&file_priv
->fbs_lock
);
3215 * drm_mode_getfb - get FB info
3216 * @dev: drm device for the ioctl
3217 * @data: data pointer for the ioctl
3218 * @file_priv: drm file for the ioctl call
3220 * Lookup the FB given its ID and return info about it.
3222 * Called by the user via ioctl.
3225 * Zero on success, errno on failure.
3227 int drm_mode_getfb(struct drm_device
*dev
,
3228 void *data
, struct drm_file
*file_priv
)
3230 struct drm_mode_fb_cmd
*r
= data
;
3231 struct drm_framebuffer
*fb
;
3234 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3237 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3241 r
->height
= fb
->height
;
3242 r
->width
= fb
->width
;
3243 r
->depth
= fb
->depth
;
3244 r
->bpp
= fb
->bits_per_pixel
;
3245 r
->pitch
= fb
->pitches
[0];
3246 if (fb
->funcs
->create_handle
) {
3247 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3248 drm_is_control_client(file_priv
)) {
3249 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3252 /* GET_FB() is an unprivileged ioctl so we must not
3253 * return a buffer-handle to non-master processes! For
3254 * backwards-compatibility reasons, we cannot make
3255 * GET_FB() privileged, so just return an invalid handle
3256 * for non-masters. */
3264 drm_framebuffer_unreference(fb
);
3270 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3271 * @dev: drm device for the ioctl
3272 * @data: data pointer for the ioctl
3273 * @file_priv: drm file for the ioctl call
3275 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3276 * rectangle list. Generic userspace which does frontbuffer rendering must call
3277 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3278 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3280 * Modesetting drivers which always update the frontbuffer do not need to
3281 * implement the corresponding ->dirty framebuffer callback.
3283 * Called by the user via ioctl.
3286 * Zero on success, errno on failure.
3288 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3289 void *data
, struct drm_file
*file_priv
)
3291 struct drm_clip_rect __user
*clips_ptr
;
3292 struct drm_clip_rect
*clips
= NULL
;
3293 struct drm_mode_fb_dirty_cmd
*r
= data
;
3294 struct drm_framebuffer
*fb
;
3299 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3302 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3306 num_clips
= r
->num_clips
;
3307 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3309 if (!num_clips
!= !clips_ptr
) {
3314 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3316 /* If userspace annotates copy, clips must come in pairs */
3317 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3322 if (num_clips
&& clips_ptr
) {
3323 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3327 clips
= kzalloc(num_clips
* sizeof(*clips
), GFP_KERNEL
);
3333 ret
= copy_from_user(clips
, clips_ptr
,
3334 num_clips
* sizeof(*clips
));
3341 if (fb
->funcs
->dirty
) {
3342 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3351 drm_framebuffer_unreference(fb
);
3358 * drm_fb_release - remove and free the FBs on this file
3359 * @priv: drm file for the ioctl
3361 * Destroy all the FBs associated with @filp.
3363 * Called by the user via ioctl.
3366 * Zero on success, errno on failure.
3368 void drm_fb_release(struct drm_file
*priv
)
3370 struct drm_device
*dev
= priv
->minor
->dev
;
3371 struct drm_framebuffer
*fb
, *tfb
;
3374 * When the file gets released that means no one else can access the fb
3375 * list any more, so no need to grab fpriv->fbs_lock. And we need to to
3376 * avoid upsetting lockdep since the universal cursor code adds a
3377 * framebuffer while holding mutex locks.
3379 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3380 * locks is impossible here since no one else but this function can get
3383 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3385 mutex_lock(&dev
->mode_config
.fb_lock
);
3386 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3387 __drm_framebuffer_unregister(dev
, fb
);
3388 mutex_unlock(&dev
->mode_config
.fb_lock
);
3390 list_del_init(&fb
->filp_head
);
3392 /* This will also drop the fpriv->fbs reference. */
3393 drm_framebuffer_remove(fb
);
3398 * drm_property_create - create a new property type
3400 * @flags: flags specifying the property type
3401 * @name: name of the property
3402 * @num_values: number of pre-defined values
3404 * This creates a new generic drm property which can then be attached to a drm
3405 * object with drm_object_attach_property. The returned property object must be
3406 * freed with drm_property_destroy.
3408 * Note that the DRM core keeps a per-device list of properties and that, if
3409 * drm_mode_config_cleanup() is called, it will destroy all properties created
3413 * A pointer to the newly created property on success, NULL on failure.
3415 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3416 const char *name
, int num_values
)
3418 struct drm_property
*property
= NULL
;
3421 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3425 property
->dev
= dev
;
3428 property
->values
= kzalloc(sizeof(uint64_t)*num_values
, GFP_KERNEL
);
3429 if (!property
->values
)
3433 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3437 property
->flags
= flags
;
3438 property
->num_values
= num_values
;
3439 INIT_LIST_HEAD(&property
->enum_blob_list
);
3442 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3443 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3446 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3448 WARN_ON(!drm_property_type_valid(property
));
3452 kfree(property
->values
);
3456 EXPORT_SYMBOL(drm_property_create
);
3459 * drm_property_create_enum - create a new enumeration property type
3461 * @flags: flags specifying the property type
3462 * @name: name of the property
3463 * @props: enumeration lists with property values
3464 * @num_values: number of pre-defined values
3466 * This creates a new generic drm property which can then be attached to a drm
3467 * object with drm_object_attach_property. The returned property object must be
3468 * freed with drm_property_destroy.
3470 * Userspace is only allowed to set one of the predefined values for enumeration
3474 * A pointer to the newly created property on success, NULL on failure.
3476 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3478 const struct drm_prop_enum_list
*props
,
3481 struct drm_property
*property
;
3484 flags
|= DRM_MODE_PROP_ENUM
;
3486 property
= drm_property_create(dev
, flags
, name
, num_values
);
3490 for (i
= 0; i
< num_values
; i
++) {
3491 ret
= drm_property_add_enum(property
, i
,
3495 drm_property_destroy(dev
, property
);
3502 EXPORT_SYMBOL(drm_property_create_enum
);
3505 * drm_property_create_bitmask - create a new bitmask property type
3507 * @flags: flags specifying the property type
3508 * @name: name of the property
3509 * @props: enumeration lists with property bitflags
3510 * @num_props: size of the @props array
3511 * @supported_bits: bitmask of all supported enumeration values
3513 * This creates a new bitmask drm property which can then be attached to a drm
3514 * object with drm_object_attach_property. The returned property object must be
3515 * freed with drm_property_destroy.
3517 * Compared to plain enumeration properties userspace is allowed to set any
3518 * or'ed together combination of the predefined property bitflag values
3521 * A pointer to the newly created property on success, NULL on failure.
3523 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3524 int flags
, const char *name
,
3525 const struct drm_prop_enum_list
*props
,
3527 uint64_t supported_bits
)
3529 struct drm_property
*property
;
3530 int i
, ret
, index
= 0;
3531 int num_values
= hweight64(supported_bits
);
3533 flags
|= DRM_MODE_PROP_BITMASK
;
3535 property
= drm_property_create(dev
, flags
, name
, num_values
);
3538 for (i
= 0; i
< num_props
; i
++) {
3539 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3542 if (WARN_ON(index
>= num_values
)) {
3543 drm_property_destroy(dev
, property
);
3547 ret
= drm_property_add_enum(property
, index
++,
3551 drm_property_destroy(dev
, property
);
3558 EXPORT_SYMBOL(drm_property_create_bitmask
);
3560 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3561 int flags
, const char *name
,
3562 uint64_t min
, uint64_t max
)
3564 struct drm_property
*property
;
3566 property
= drm_property_create(dev
, flags
, name
, 2);
3570 property
->values
[0] = min
;
3571 property
->values
[1] = max
;
3577 * drm_property_create_range - create a new ranged property type
3579 * @flags: flags specifying the property type
3580 * @name: name of the property
3581 * @min: minimum value of the property
3582 * @max: maximum value of the property
3584 * This creates a new generic drm property which can then be attached to a drm
3585 * object with drm_object_attach_property. The returned property object must be
3586 * freed with drm_property_destroy.
3588 * Userspace is allowed to set any integer value in the (min, max) range
3592 * A pointer to the newly created property on success, NULL on failure.
3594 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3596 uint64_t min
, uint64_t max
)
3598 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3601 EXPORT_SYMBOL(drm_property_create_range
);
3603 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3604 int flags
, const char *name
,
3605 int64_t min
, int64_t max
)
3607 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3608 name
, I642U64(min
), I642U64(max
));
3610 EXPORT_SYMBOL(drm_property_create_signed_range
);
3612 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3613 int flags
, const char *name
, uint32_t type
)
3615 struct drm_property
*property
;
3617 flags
|= DRM_MODE_PROP_OBJECT
;
3619 property
= drm_property_create(dev
, flags
, name
, 1);
3623 property
->values
[0] = type
;
3627 EXPORT_SYMBOL(drm_property_create_object
);
3630 * drm_property_add_enum - add a possible value to an enumeration property
3631 * @property: enumeration property to change
3632 * @index: index of the new enumeration
3633 * @value: value of the new enumeration
3634 * @name: symbolic name of the new enumeration
3636 * This functions adds enumerations to a property.
3638 * It's use is deprecated, drivers should use one of the more specific helpers
3639 * to directly create the property with all enumerations already attached.
3642 * Zero on success, error code on failure.
3644 int drm_property_add_enum(struct drm_property
*property
, int index
,
3645 uint64_t value
, const char *name
)
3647 struct drm_property_enum
*prop_enum
;
3649 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3650 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3654 * Bitmask enum properties have the additional constraint of values
3657 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3661 if (!list_empty(&property
->enum_blob_list
)) {
3662 list_for_each_entry(prop_enum
, &property
->enum_blob_list
, head
) {
3663 if (prop_enum
->value
== value
) {
3664 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3665 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3671 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3675 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3676 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3677 prop_enum
->value
= value
;
3679 property
->values
[index
] = value
;
3680 list_add_tail(&prop_enum
->head
, &property
->enum_blob_list
);
3683 EXPORT_SYMBOL(drm_property_add_enum
);
3686 * drm_property_destroy - destroy a drm property
3688 * @property: property to destry
3690 * This function frees a property including any attached resources like
3691 * enumeration values.
3693 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3695 struct drm_property_enum
*prop_enum
, *pt
;
3697 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_blob_list
, head
) {
3698 list_del(&prop_enum
->head
);
3702 if (property
->num_values
)
3703 kfree(property
->values
);
3704 drm_mode_object_put(dev
, &property
->base
);
3705 list_del(&property
->head
);
3708 EXPORT_SYMBOL(drm_property_destroy
);
3711 * drm_object_attach_property - attach a property to a modeset object
3712 * @obj: drm modeset object
3713 * @property: property to attach
3714 * @init_val: initial value of the property
3716 * This attaches the given property to the modeset object with the given initial
3717 * value. Currently this function cannot fail since the properties are stored in
3718 * a statically sized array.
3720 void drm_object_attach_property(struct drm_mode_object
*obj
,
3721 struct drm_property
*property
,
3724 int count
= obj
->properties
->count
;
3726 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3727 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3728 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3729 "you see this message on the same object type.\n",
3734 obj
->properties
->ids
[count
] = property
->base
.id
;
3735 obj
->properties
->values
[count
] = init_val
;
3736 obj
->properties
->count
++;
3738 EXPORT_SYMBOL(drm_object_attach_property
);
3741 * drm_object_property_set_value - set the value of a property
3742 * @obj: drm mode object to set property value for
3743 * @property: property to set
3744 * @val: value the property should be set to
3746 * This functions sets a given property on a given object. This function only
3747 * changes the software state of the property, it does not call into the
3748 * driver's ->set_property callback.
3751 * Zero on success, error code on failure.
3753 int drm_object_property_set_value(struct drm_mode_object
*obj
,
3754 struct drm_property
*property
, uint64_t val
)
3758 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3759 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3760 obj
->properties
->values
[i
] = val
;
3767 EXPORT_SYMBOL(drm_object_property_set_value
);
3770 * drm_object_property_get_value - retrieve the value of a property
3771 * @obj: drm mode object to get property value from
3772 * @property: property to retrieve
3773 * @val: storage for the property value
3775 * This function retrieves the softare state of the given property for the given
3776 * property. Since there is no driver callback to retrieve the current property
3777 * value this might be out of sync with the hardware, depending upon the driver
3781 * Zero on success, error code on failure.
3783 int drm_object_property_get_value(struct drm_mode_object
*obj
,
3784 struct drm_property
*property
, uint64_t *val
)
3788 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3789 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3790 *val
= obj
->properties
->values
[i
];
3797 EXPORT_SYMBOL(drm_object_property_get_value
);
3800 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3803 * @file_priv: DRM file info
3805 * This function retrieves the current value for an connectors's property.
3807 * Called by the user via ioctl.
3810 * Zero on success, errno on failure.
3812 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
3813 void *data
, struct drm_file
*file_priv
)
3815 struct drm_mode_get_property
*out_resp
= data
;
3816 struct drm_property
*property
;
3819 int value_count
= 0;
3822 struct drm_property_enum
*prop_enum
;
3823 struct drm_mode_property_enum __user
*enum_ptr
;
3824 struct drm_property_blob
*prop_blob
;
3825 uint32_t __user
*blob_id_ptr
;
3826 uint64_t __user
*values_ptr
;
3827 uint32_t __user
*blob_length_ptr
;
3829 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3832 drm_modeset_lock_all(dev
);
3833 property
= drm_property_find(dev
, out_resp
->prop_id
);
3839 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3840 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3841 list_for_each_entry(prop_enum
, &property
->enum_blob_list
, head
)
3843 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
3844 list_for_each_entry(prop_blob
, &property
->enum_blob_list
, head
)
3848 value_count
= property
->num_values
;
3850 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
3851 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
3852 out_resp
->flags
= property
->flags
;
3854 if ((out_resp
->count_values
>= value_count
) && value_count
) {
3855 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
3856 for (i
= 0; i
< value_count
; i
++) {
3857 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
3863 out_resp
->count_values
= value_count
;
3865 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3866 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3867 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
3869 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
3870 list_for_each_entry(prop_enum
, &property
->enum_blob_list
, head
) {
3872 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
3877 if (copy_to_user(&enum_ptr
[copied
].name
,
3878 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
3885 out_resp
->count_enum_blobs
= enum_count
;
3888 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
3889 if ((out_resp
->count_enum_blobs
>= blob_count
) && blob_count
) {
3891 blob_id_ptr
= (uint32_t __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
3892 blob_length_ptr
= (uint32_t __user
*)(unsigned long)out_resp
->values_ptr
;
3894 list_for_each_entry(prop_blob
, &property
->enum_blob_list
, head
) {
3895 if (put_user(prop_blob
->base
.id
, blob_id_ptr
+ copied
)) {
3900 if (put_user(prop_blob
->length
, blob_length_ptr
+ copied
)) {
3908 out_resp
->count_enum_blobs
= blob_count
;
3911 drm_modeset_unlock_all(dev
);
3915 static struct drm_property_blob
*
3916 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
3919 struct drm_property_blob
*blob
;
3922 if (!length
|| !data
)
3925 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
3929 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
3935 blob
->length
= length
;
3937 memcpy(blob
->data
, data
, length
);
3939 list_add_tail(&blob
->head
, &dev
->mode_config
.property_blob_list
);
3943 static void drm_property_destroy_blob(struct drm_device
*dev
,
3944 struct drm_property_blob
*blob
)
3946 drm_mode_object_put(dev
, &blob
->base
);
3947 list_del(&blob
->head
);
3952 * drm_mode_getblob_ioctl - get the contents of a blob property value
3955 * @file_priv: DRM file info
3957 * This function retrieves the contents of a blob property. The value stored in
3958 * an object's blob property is just a normal modeset object id.
3960 * Called by the user via ioctl.
3963 * Zero on success, errno on failure.
3965 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
3966 void *data
, struct drm_file
*file_priv
)
3968 struct drm_mode_get_blob
*out_resp
= data
;
3969 struct drm_property_blob
*blob
;
3971 void __user
*blob_ptr
;
3973 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3976 drm_modeset_lock_all(dev
);
3977 blob
= drm_property_blob_find(dev
, out_resp
->blob_id
);
3983 if (out_resp
->length
== blob
->length
) {
3984 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
3985 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)){
3990 out_resp
->length
= blob
->length
;
3993 drm_modeset_unlock_all(dev
);
3998 * drm_mode_connector_set_path_property - set tile property on connector
3999 * @connector: connector to set property on.
4000 * @path: path to use for property.
4002 * This creates a property to expose to userspace to specify a
4003 * connector path. This is mainly used for DisplayPort MST where
4004 * connectors have a topology and we want to allow userspace to give
4005 * them more meaningful names.
4008 * Zero on success, errno on failure.
4010 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4013 struct drm_device
*dev
= connector
->dev
;
4014 size_t size
= strlen(path
) + 1;
4017 connector
->path_blob_ptr
= drm_property_create_blob(connector
->dev
,
4019 if (!connector
->path_blob_ptr
)
4022 ret
= drm_object_property_set_value(&connector
->base
,
4023 dev
->mode_config
.path_property
,
4024 connector
->path_blob_ptr
->base
.id
);
4027 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4030 * drm_mode_connector_update_edid_property - update the edid property of a connector
4031 * @connector: drm connector
4032 * @edid: new value of the edid property
4034 * This function creates a new blob modeset object and assigns its id to the
4035 * connector's edid property.
4038 * Zero on success, errno on failure.
4040 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4041 const struct edid
*edid
)
4043 struct drm_device
*dev
= connector
->dev
;
4047 /* ignore requests to set edid when overridden */
4048 if (connector
->override_edid
)
4051 if (connector
->edid_blob_ptr
)
4052 drm_property_destroy_blob(dev
, connector
->edid_blob_ptr
);
4054 /* Delete edid, when there is none. */
4056 connector
->edid_blob_ptr
= NULL
;
4057 ret
= drm_object_property_set_value(&connector
->base
, dev
->mode_config
.edid_property
, 0);
4061 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4062 connector
->edid_blob_ptr
= drm_property_create_blob(connector
->dev
,
4064 if (!connector
->edid_blob_ptr
)
4067 ret
= drm_object_property_set_value(&connector
->base
,
4068 dev
->mode_config
.edid_property
,
4069 connector
->edid_blob_ptr
->base
.id
);
4073 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4075 static bool drm_property_change_is_valid(struct drm_property
*property
,
4078 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4081 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4082 if (value
< property
->values
[0] || value
> property
->values
[1])
4085 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4086 int64_t svalue
= U642I64(value
);
4087 if (svalue
< U642I64(property
->values
[0]) ||
4088 svalue
> U642I64(property
->values
[1]))
4091 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4093 uint64_t valid_mask
= 0;
4094 for (i
= 0; i
< property
->num_values
; i
++)
4095 valid_mask
|= (1ULL << property
->values
[i
]);
4096 return !(value
& ~valid_mask
);
4097 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4098 /* Only the driver knows */
4100 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4101 struct drm_mode_object
*obj
;
4102 /* a zero value for an object property translates to null: */
4106 * NOTE: use _object_find() directly to bypass restriction on
4107 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4108 * object this could race against object finalization, so it
4109 * simply tells us that the object *was* valid. Which is good
4112 obj
= _object_find(property
->dev
, value
, property
->values
[0]);
4116 for (i
= 0; i
< property
->num_values
; i
++)
4117 if (property
->values
[i
] == value
)
4124 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4127 * @file_priv: DRM file info
4129 * This function sets the current value for a connectors's property. It also
4130 * calls into a driver's ->set_property callback to update the hardware state
4132 * Called by the user via ioctl.
4135 * Zero on success, errno on failure.
4137 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4138 void *data
, struct drm_file
*file_priv
)
4140 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4141 struct drm_mode_obj_set_property obj_set_prop
= {
4142 .value
= conn_set_prop
->value
,
4143 .prop_id
= conn_set_prop
->prop_id
,
4144 .obj_id
= conn_set_prop
->connector_id
,
4145 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4148 /* It does all the locking and checking we need */
4149 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4152 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4153 struct drm_property
*property
,
4157 struct drm_connector
*connector
= obj_to_connector(obj
);
4159 /* Do DPMS ourselves */
4160 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4161 if (connector
->funcs
->dpms
)
4162 (*connector
->funcs
->dpms
)(connector
, (int)value
);
4164 } else if (connector
->funcs
->set_property
)
4165 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4167 /* store the property value if successful */
4169 drm_object_property_set_value(&connector
->base
, property
, value
);
4173 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4174 struct drm_property
*property
,
4178 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4180 if (crtc
->funcs
->set_property
)
4181 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4183 drm_object_property_set_value(obj
, property
, value
);
4189 * drm_mode_plane_set_obj_prop - set the value of a property
4190 * @plane: drm plane object to set property value for
4191 * @property: property to set
4192 * @value: value the property should be set to
4194 * This functions sets a given property on a given plane object. This function
4195 * calls the driver's ->set_property callback and changes the software state of
4196 * the property if the callback succeeds.
4199 * Zero on success, error code on failure.
4201 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4202 struct drm_property
*property
,
4206 struct drm_mode_object
*obj
= &plane
->base
;
4208 if (plane
->funcs
->set_property
)
4209 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4211 drm_object_property_set_value(obj
, property
, value
);
4215 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4218 * drm_mode_getproperty_ioctl - get the current value of a object's property
4221 * @file_priv: DRM file info
4223 * This function retrieves the current value for an object's property. Compared
4224 * to the connector specific ioctl this one is extended to also work on crtc and
4227 * Called by the user via ioctl.
4230 * Zero on success, errno on failure.
4232 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4233 struct drm_file
*file_priv
)
4235 struct drm_mode_obj_get_properties
*arg
= data
;
4236 struct drm_mode_object
*obj
;
4240 int props_count
= 0;
4241 uint32_t __user
*props_ptr
;
4242 uint64_t __user
*prop_values_ptr
;
4244 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4247 drm_modeset_lock_all(dev
);
4249 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4254 if (!obj
->properties
) {
4259 props_count
= obj
->properties
->count
;
4261 /* This ioctl is called twice, once to determine how much space is
4262 * needed, and the 2nd time to fill it. */
4263 if ((arg
->count_props
>= props_count
) && props_count
) {
4265 props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->props_ptr
);
4266 prop_values_ptr
= (uint64_t __user
*)(unsigned long)
4267 (arg
->prop_values_ptr
);
4268 for (i
= 0; i
< props_count
; i
++) {
4269 if (put_user(obj
->properties
->ids
[i
],
4270 props_ptr
+ copied
)) {
4274 if (put_user(obj
->properties
->values
[i
],
4275 prop_values_ptr
+ copied
)) {
4282 arg
->count_props
= props_count
;
4284 drm_modeset_unlock_all(dev
);
4289 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4292 * @file_priv: DRM file info
4294 * This function sets the current value for an object's property. It also calls
4295 * into a driver's ->set_property callback to update the hardware state.
4296 * Compared to the connector specific ioctl this one is extended to also work on
4297 * crtc and plane objects.
4299 * Called by the user via ioctl.
4302 * Zero on success, errno on failure.
4304 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4305 struct drm_file
*file_priv
)
4307 struct drm_mode_obj_set_property
*arg
= data
;
4308 struct drm_mode_object
*arg_obj
;
4309 struct drm_mode_object
*prop_obj
;
4310 struct drm_property
*property
;
4314 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4317 drm_modeset_lock_all(dev
);
4319 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4324 if (!arg_obj
->properties
)
4327 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4328 if (arg_obj
->properties
->ids
[i
] == arg
->prop_id
)
4331 if (i
== arg_obj
->properties
->count
)
4334 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
4335 DRM_MODE_OBJECT_PROPERTY
);
4340 property
= obj_to_property(prop_obj
);
4342 if (!drm_property_change_is_valid(property
, arg
->value
))
4345 switch (arg_obj
->type
) {
4346 case DRM_MODE_OBJECT_CONNECTOR
:
4347 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
4350 case DRM_MODE_OBJECT_CRTC
:
4351 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
4353 case DRM_MODE_OBJECT_PLANE
:
4354 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
4355 property
, arg
->value
);
4360 drm_modeset_unlock_all(dev
);
4365 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4366 * @connector: connector to attach
4367 * @encoder: encoder to attach @connector to
4369 * This function links up a connector to an encoder. Note that the routing
4370 * restrictions between encoders and crtcs are exposed to userspace through the
4371 * possible_clones and possible_crtcs bitmasks.
4374 * Zero on success, errno on failure.
4376 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
4377 struct drm_encoder
*encoder
)
4381 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
4382 if (connector
->encoder_ids
[i
] == 0) {
4383 connector
->encoder_ids
[i
] = encoder
->base
.id
;
4389 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
4392 * drm_mode_crtc_set_gamma_size - set the gamma table size
4393 * @crtc: CRTC to set the gamma table size for
4394 * @gamma_size: size of the gamma table
4396 * Drivers which support gamma tables should set this to the supported gamma
4397 * table size when initializing the CRTC. Currently the drm core only supports a
4398 * fixed gamma table size.
4401 * Zero on success, errno on failure.
4403 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
4406 crtc
->gamma_size
= gamma_size
;
4408 crtc
->gamma_store
= kzalloc(gamma_size
* sizeof(uint16_t) * 3, GFP_KERNEL
);
4409 if (!crtc
->gamma_store
) {
4410 crtc
->gamma_size
= 0;
4416 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
4419 * drm_mode_gamma_set_ioctl - set the gamma table
4422 * @file_priv: DRM file info
4424 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4425 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4427 * Called by the user via ioctl.
4430 * Zero on success, errno on failure.
4432 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
4433 void *data
, struct drm_file
*file_priv
)
4435 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4436 struct drm_crtc
*crtc
;
4437 void *r_base
, *g_base
, *b_base
;
4441 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4444 drm_modeset_lock_all(dev
);
4445 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4451 if (crtc
->funcs
->gamma_set
== NULL
) {
4456 /* memcpy into gamma store */
4457 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4462 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4463 r_base
= crtc
->gamma_store
;
4464 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
4469 g_base
= r_base
+ size
;
4470 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
4475 b_base
= g_base
+ size
;
4476 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
4481 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
4484 drm_modeset_unlock_all(dev
);
4490 * drm_mode_gamma_get_ioctl - get the gamma table
4493 * @file_priv: DRM file info
4495 * Copy the current gamma table into the storage provided. This also provides
4496 * the gamma table size the driver expects, which can be used to size the
4497 * allocated storage.
4499 * Called by the user via ioctl.
4502 * Zero on success, errno on failure.
4504 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
4505 void *data
, struct drm_file
*file_priv
)
4507 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4508 struct drm_crtc
*crtc
;
4509 void *r_base
, *g_base
, *b_base
;
4513 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4516 drm_modeset_lock_all(dev
);
4517 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4523 /* memcpy into gamma store */
4524 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4529 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4530 r_base
= crtc
->gamma_store
;
4531 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
4536 g_base
= r_base
+ size
;
4537 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
4542 b_base
= g_base
+ size
;
4543 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
4548 drm_modeset_unlock_all(dev
);
4553 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4556 * @file_priv: DRM file info
4558 * This schedules an asynchronous update on a given CRTC, called page flip.
4559 * Optionally a drm event is generated to signal the completion of the event.
4560 * Generic drivers cannot assume that a pageflip with changed framebuffer
4561 * properties (including driver specific metadata like tiling layout) will work,
4562 * but some drivers support e.g. pixel format changes through the pageflip
4565 * Called by the user via ioctl.
4568 * Zero on success, errno on failure.
4570 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
4571 void *data
, struct drm_file
*file_priv
)
4573 struct drm_mode_crtc_page_flip
*page_flip
= data
;
4574 struct drm_crtc
*crtc
;
4575 struct drm_framebuffer
*fb
= NULL
;
4576 struct drm_pending_vblank_event
*e
= NULL
;
4577 unsigned long flags
;
4580 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
4581 page_flip
->reserved
!= 0)
4584 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
4587 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
4591 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
4592 if (crtc
->primary
->fb
== NULL
) {
4593 /* The framebuffer is currently unbound, presumably
4594 * due to a hotplug event, that userspace has not
4601 if (crtc
->funcs
->page_flip
== NULL
)
4604 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
4610 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
4614 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
4615 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4620 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4622 spin_lock_irqsave(&dev
->event_lock
, flags
);
4623 if (file_priv
->event_space
< sizeof e
->event
) {
4624 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4627 file_priv
->event_space
-= sizeof e
->event
;
4628 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4630 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
4632 spin_lock_irqsave(&dev
->event_lock
, flags
);
4633 file_priv
->event_space
+= sizeof e
->event
;
4634 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4638 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
4639 e
->event
.base
.length
= sizeof e
->event
;
4640 e
->event
.user_data
= page_flip
->user_data
;
4641 e
->base
.event
= &e
->event
.base
;
4642 e
->base
.file_priv
= file_priv
;
4644 (void (*) (struct drm_pending_event
*)) kfree
;
4647 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
4648 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
4650 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4651 spin_lock_irqsave(&dev
->event_lock
, flags
);
4652 file_priv
->event_space
+= sizeof e
->event
;
4653 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4656 /* Keep the old fb, don't unref it. */
4657 crtc
->primary
->old_fb
= NULL
;
4660 * Warn if the driver hasn't properly updated the crtc->fb
4661 * field to reflect that the new framebuffer is now used.
4662 * Failing to do so will screw with the reference counting
4665 WARN_ON(crtc
->primary
->fb
!= fb
);
4666 /* Unref only the old framebuffer. */
4672 drm_framebuffer_unreference(fb
);
4673 if (crtc
->primary
->old_fb
)
4674 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
4675 crtc
->primary
->old_fb
= NULL
;
4676 drm_modeset_unlock_crtc(crtc
);
4682 * drm_mode_config_reset - call ->reset callbacks
4685 * This functions calls all the crtc's, encoder's and connector's ->reset
4686 * callback. Drivers can use this in e.g. their driver load or resume code to
4687 * reset hardware and software state.
4689 void drm_mode_config_reset(struct drm_device
*dev
)
4691 struct drm_crtc
*crtc
;
4692 struct drm_plane
*plane
;
4693 struct drm_encoder
*encoder
;
4694 struct drm_connector
*connector
;
4696 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
)
4697 if (plane
->funcs
->reset
)
4698 plane
->funcs
->reset(plane
);
4700 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
4701 if (crtc
->funcs
->reset
)
4702 crtc
->funcs
->reset(crtc
);
4704 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
4705 if (encoder
->funcs
->reset
)
4706 encoder
->funcs
->reset(encoder
);
4708 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
4709 connector
->status
= connector_status_unknown
;
4711 if (connector
->funcs
->reset
)
4712 connector
->funcs
->reset(connector
);
4715 EXPORT_SYMBOL(drm_mode_config_reset
);
4718 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4721 * @file_priv: DRM file info
4723 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4724 * TTM or something else entirely) and returns the resulting buffer handle. This
4725 * handle can then be wrapped up into a framebuffer modeset object.
4727 * Note that userspace is not allowed to use such objects for render
4728 * acceleration - drivers must create their own private ioctls for such a use
4731 * Called by the user via ioctl.
4734 * Zero on success, errno on failure.
4736 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
4737 void *data
, struct drm_file
*file_priv
)
4739 struct drm_mode_create_dumb
*args
= data
;
4740 u32 cpp
, stride
, size
;
4742 if (!dev
->driver
->dumb_create
)
4744 if (!args
->width
|| !args
->height
|| !args
->bpp
)
4747 /* overflow checks for 32bit size calculations */
4748 /* NOTE: DIV_ROUND_UP() can overflow */
4749 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
4750 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
4752 stride
= cpp
* args
->width
;
4753 if (args
->height
> 0xffffffffU
/ stride
)
4756 /* test for wrap-around */
4757 size
= args
->height
* stride
;
4758 if (PAGE_ALIGN(size
) == 0)
4761 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
4765 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4768 * @file_priv: DRM file info
4770 * Allocate an offset in the drm device node's address space to be able to
4771 * memory map a dumb buffer.
4773 * Called by the user via ioctl.
4776 * Zero on success, errno on failure.
4778 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
4779 void *data
, struct drm_file
*file_priv
)
4781 struct drm_mode_map_dumb
*args
= data
;
4783 /* call driver ioctl to get mmap offset */
4784 if (!dev
->driver
->dumb_map_offset
)
4787 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
4791 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4794 * @file_priv: DRM file info
4796 * This destroys the userspace handle for the given dumb backing storage buffer.
4797 * Since buffer objects must be reference counted in the kernel a buffer object
4798 * won't be immediately freed if a framebuffer modeset object still uses it.
4800 * Called by the user via ioctl.
4803 * Zero on success, errno on failure.
4805 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
4806 void *data
, struct drm_file
*file_priv
)
4808 struct drm_mode_destroy_dumb
*args
= data
;
4810 if (!dev
->driver
->dumb_destroy
)
4813 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
4817 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4818 * @format: pixel format (DRM_FORMAT_*)
4819 * @depth: storage for the depth value
4820 * @bpp: storage for the bpp value
4822 * This only supports RGB formats here for compat with code that doesn't use
4823 * pixel formats directly yet.
4825 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
4830 case DRM_FORMAT_RGB332
:
4831 case DRM_FORMAT_BGR233
:
4835 case DRM_FORMAT_XRGB1555
:
4836 case DRM_FORMAT_XBGR1555
:
4837 case DRM_FORMAT_RGBX5551
:
4838 case DRM_FORMAT_BGRX5551
:
4839 case DRM_FORMAT_ARGB1555
:
4840 case DRM_FORMAT_ABGR1555
:
4841 case DRM_FORMAT_RGBA5551
:
4842 case DRM_FORMAT_BGRA5551
:
4846 case DRM_FORMAT_RGB565
:
4847 case DRM_FORMAT_BGR565
:
4851 case DRM_FORMAT_RGB888
:
4852 case DRM_FORMAT_BGR888
:
4856 case DRM_FORMAT_XRGB8888
:
4857 case DRM_FORMAT_XBGR8888
:
4858 case DRM_FORMAT_RGBX8888
:
4859 case DRM_FORMAT_BGRX8888
:
4863 case DRM_FORMAT_XRGB2101010
:
4864 case DRM_FORMAT_XBGR2101010
:
4865 case DRM_FORMAT_RGBX1010102
:
4866 case DRM_FORMAT_BGRX1010102
:
4867 case DRM_FORMAT_ARGB2101010
:
4868 case DRM_FORMAT_ABGR2101010
:
4869 case DRM_FORMAT_RGBA1010102
:
4870 case DRM_FORMAT_BGRA1010102
:
4874 case DRM_FORMAT_ARGB8888
:
4875 case DRM_FORMAT_ABGR8888
:
4876 case DRM_FORMAT_RGBA8888
:
4877 case DRM_FORMAT_BGRA8888
:
4882 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4883 drm_get_format_name(format
));
4889 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
4892 * drm_format_num_planes - get the number of planes for format
4893 * @format: pixel format (DRM_FORMAT_*)
4896 * The number of planes used by the specified pixel format.
4898 int drm_format_num_planes(uint32_t format
)
4901 case DRM_FORMAT_YUV410
:
4902 case DRM_FORMAT_YVU410
:
4903 case DRM_FORMAT_YUV411
:
4904 case DRM_FORMAT_YVU411
:
4905 case DRM_FORMAT_YUV420
:
4906 case DRM_FORMAT_YVU420
:
4907 case DRM_FORMAT_YUV422
:
4908 case DRM_FORMAT_YVU422
:
4909 case DRM_FORMAT_YUV444
:
4910 case DRM_FORMAT_YVU444
:
4912 case DRM_FORMAT_NV12
:
4913 case DRM_FORMAT_NV21
:
4914 case DRM_FORMAT_NV16
:
4915 case DRM_FORMAT_NV61
:
4916 case DRM_FORMAT_NV24
:
4917 case DRM_FORMAT_NV42
:
4923 EXPORT_SYMBOL(drm_format_num_planes
);
4926 * drm_format_plane_cpp - determine the bytes per pixel value
4927 * @format: pixel format (DRM_FORMAT_*)
4928 * @plane: plane index
4931 * The bytes per pixel value for the specified plane.
4933 int drm_format_plane_cpp(uint32_t format
, int plane
)
4938 if (plane
>= drm_format_num_planes(format
))
4942 case DRM_FORMAT_YUYV
:
4943 case DRM_FORMAT_YVYU
:
4944 case DRM_FORMAT_UYVY
:
4945 case DRM_FORMAT_VYUY
:
4947 case DRM_FORMAT_NV12
:
4948 case DRM_FORMAT_NV21
:
4949 case DRM_FORMAT_NV16
:
4950 case DRM_FORMAT_NV61
:
4951 case DRM_FORMAT_NV24
:
4952 case DRM_FORMAT_NV42
:
4953 return plane
? 2 : 1;
4954 case DRM_FORMAT_YUV410
:
4955 case DRM_FORMAT_YVU410
:
4956 case DRM_FORMAT_YUV411
:
4957 case DRM_FORMAT_YVU411
:
4958 case DRM_FORMAT_YUV420
:
4959 case DRM_FORMAT_YVU420
:
4960 case DRM_FORMAT_YUV422
:
4961 case DRM_FORMAT_YVU422
:
4962 case DRM_FORMAT_YUV444
:
4963 case DRM_FORMAT_YVU444
:
4966 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
4970 EXPORT_SYMBOL(drm_format_plane_cpp
);
4973 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4974 * @format: pixel format (DRM_FORMAT_*)
4977 * The horizontal chroma subsampling factor for the
4978 * specified pixel format.
4980 int drm_format_horz_chroma_subsampling(uint32_t format
)
4983 case DRM_FORMAT_YUV411
:
4984 case DRM_FORMAT_YVU411
:
4985 case DRM_FORMAT_YUV410
:
4986 case DRM_FORMAT_YVU410
:
4988 case DRM_FORMAT_YUYV
:
4989 case DRM_FORMAT_YVYU
:
4990 case DRM_FORMAT_UYVY
:
4991 case DRM_FORMAT_VYUY
:
4992 case DRM_FORMAT_NV12
:
4993 case DRM_FORMAT_NV21
:
4994 case DRM_FORMAT_NV16
:
4995 case DRM_FORMAT_NV61
:
4996 case DRM_FORMAT_YUV422
:
4997 case DRM_FORMAT_YVU422
:
4998 case DRM_FORMAT_YUV420
:
4999 case DRM_FORMAT_YVU420
:
5005 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5008 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5009 * @format: pixel format (DRM_FORMAT_*)
5012 * The vertical chroma subsampling factor for the
5013 * specified pixel format.
5015 int drm_format_vert_chroma_subsampling(uint32_t format
)
5018 case DRM_FORMAT_YUV410
:
5019 case DRM_FORMAT_YVU410
:
5021 case DRM_FORMAT_YUV420
:
5022 case DRM_FORMAT_YVU420
:
5023 case DRM_FORMAT_NV12
:
5024 case DRM_FORMAT_NV21
:
5030 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5033 * drm_rotation_simplify() - Try to simplify the rotation
5034 * @rotation: Rotation to be simplified
5035 * @supported_rotations: Supported rotations
5037 * Attempt to simplify the rotation to a form that is supported.
5038 * Eg. if the hardware supports everything except DRM_REFLECT_X
5039 * one could call this function like this:
5041 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5042 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5043 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5045 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5046 * transforms the hardware supports, this function may not
5047 * be able to produce a supported transform, so the caller should
5048 * check the result afterwards.
5050 unsigned int drm_rotation_simplify(unsigned int rotation
,
5051 unsigned int supported_rotations
)
5053 if (rotation
& ~supported_rotations
) {
5054 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5055 rotation
= (rotation
& ~0xf) | BIT((ffs(rotation
& 0xf) + 1) % 4);
5060 EXPORT_SYMBOL(drm_rotation_simplify
);
5063 * drm_mode_config_init - initialize DRM mode_configuration structure
5066 * Initialize @dev's mode_config structure, used for tracking the graphics
5067 * configuration of @dev.
5069 * Since this initializes the modeset locks, no locking is possible. Which is no
5070 * problem, since this should happen single threaded at init time. It is the
5071 * driver's problem to ensure this guarantee.
5074 void drm_mode_config_init(struct drm_device
*dev
)
5076 mutex_init(&dev
->mode_config
.mutex
);
5077 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5078 mutex_init(&dev
->mode_config
.idr_mutex
);
5079 mutex_init(&dev
->mode_config
.fb_lock
);
5080 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5081 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5082 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5083 INIT_LIST_HEAD(&dev
->mode_config
.bridge_list
);
5084 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5085 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5086 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5087 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5088 idr_init(&dev
->mode_config
.crtc_idr
);
5090 drm_modeset_lock_all(dev
);
5091 drm_mode_create_standard_connector_properties(dev
);
5092 drm_mode_create_standard_plane_properties(dev
);
5093 drm_modeset_unlock_all(dev
);
5095 /* Just to be sure */
5096 dev
->mode_config
.num_fb
= 0;
5097 dev
->mode_config
.num_connector
= 0;
5098 dev
->mode_config
.num_crtc
= 0;
5099 dev
->mode_config
.num_encoder
= 0;
5100 dev
->mode_config
.num_overlay_plane
= 0;
5101 dev
->mode_config
.num_total_plane
= 0;
5103 EXPORT_SYMBOL(drm_mode_config_init
);
5106 * drm_mode_config_cleanup - free up DRM mode_config info
5109 * Free up all the connectors and CRTCs associated with this DRM device, then
5110 * free up the framebuffers and associated buffer objects.
5112 * Note that since this /should/ happen single-threaded at driver/device
5113 * teardown time, no locking is required. It's the driver's job to ensure that
5114 * this guarantee actually holds true.
5116 * FIXME: cleanup any dangling user buffer objects too
5118 void drm_mode_config_cleanup(struct drm_device
*dev
)
5120 struct drm_connector
*connector
, *ot
;
5121 struct drm_crtc
*crtc
, *ct
;
5122 struct drm_encoder
*encoder
, *enct
;
5123 struct drm_bridge
*bridge
, *brt
;
5124 struct drm_framebuffer
*fb
, *fbt
;
5125 struct drm_property
*property
, *pt
;
5126 struct drm_property_blob
*blob
, *bt
;
5127 struct drm_plane
*plane
, *plt
;
5129 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5131 encoder
->funcs
->destroy(encoder
);
5134 list_for_each_entry_safe(bridge
, brt
,
5135 &dev
->mode_config
.bridge_list
, head
) {
5136 bridge
->funcs
->destroy(bridge
);
5139 list_for_each_entry_safe(connector
, ot
,
5140 &dev
->mode_config
.connector_list
, head
) {
5141 connector
->funcs
->destroy(connector
);
5144 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5146 drm_property_destroy(dev
, property
);
5149 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5151 drm_property_destroy_blob(dev
, blob
);
5155 * Single-threaded teardown context, so it's not required to grab the
5156 * fb_lock to protect against concurrent fb_list access. Contrary, it
5157 * would actually deadlock with the drm_framebuffer_cleanup function.
5159 * Also, if there are any framebuffers left, that's a driver leak now,
5160 * so politely WARN about this.
5162 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5163 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5164 drm_framebuffer_remove(fb
);
5167 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5169 plane
->funcs
->destroy(plane
);
5172 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5173 crtc
->funcs
->destroy(crtc
);
5176 idr_destroy(&dev
->mode_config
.crtc_idr
);
5177 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5179 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5181 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5182 unsigned int supported_rotations
)
5184 static const struct drm_prop_enum_list props
[] = {
5185 { DRM_ROTATE_0
, "rotate-0" },
5186 { DRM_ROTATE_90
, "rotate-90" },
5187 { DRM_ROTATE_180
, "rotate-180" },
5188 { DRM_ROTATE_270
, "rotate-270" },
5189 { DRM_REFLECT_X
, "reflect-x" },
5190 { DRM_REFLECT_Y
, "reflect-y" },
5193 return drm_property_create_bitmask(dev
, 0, "rotation",
5194 props
, ARRAY_SIZE(props
),
5195 supported_rotations
);
5197 EXPORT_SYMBOL(drm_mode_create_rotation_property
);