2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_fourcc.h>
40 #include <drm/drm_modeset_lock.h>
42 #include "drm_crtc_internal.h"
43 #include "drm_internal.h"
45 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
46 struct drm_mode_fb_cmd2
*r
,
47 struct drm_file
*file_priv
);
49 /* Avoid boilerplate. I'm tired of typing. */
50 #define DRM_ENUM_NAME_FN(fnname, list) \
51 const char *fnname(int val) \
54 for (i = 0; i < ARRAY_SIZE(list); i++) { \
55 if (list[i].type == val) \
56 return list[i].name; \
64 static const struct drm_prop_enum_list drm_dpms_enum_list
[] =
65 { { DRM_MODE_DPMS_ON
, "On" },
66 { DRM_MODE_DPMS_STANDBY
, "Standby" },
67 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
68 { DRM_MODE_DPMS_OFF
, "Off" }
71 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
73 static const struct drm_prop_enum_list drm_plane_type_enum_list
[] =
75 { DRM_PLANE_TYPE_OVERLAY
, "Overlay" },
76 { DRM_PLANE_TYPE_PRIMARY
, "Primary" },
77 { DRM_PLANE_TYPE_CURSOR
, "Cursor" },
83 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] =
85 { DRM_MODE_SCALE_NONE
, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
87 { DRM_MODE_SCALE_CENTER
, "Center" },
88 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list
[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE
, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3
, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9
, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list
[] =
102 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
103 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
104 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
107 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
109 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] =
111 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
112 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
113 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
116 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
117 drm_dvi_i_subconnector_enum_list
)
119 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] =
121 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
125 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
128 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
130 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] =
132 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
133 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
134 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
135 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
136 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
139 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
140 drm_tv_subconnector_enum_list
)
142 static const struct drm_prop_enum_list drm_dirty_info_enum_list
[] = {
143 { DRM_MODE_DIRTY_OFF
, "Off" },
144 { DRM_MODE_DIRTY_ON
, "On" },
145 { DRM_MODE_DIRTY_ANNOTATE
, "Annotate" },
148 struct drm_conn_prop_enum_list
{
155 * Connector and encoder types.
157 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] =
158 { { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
159 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
160 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
161 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
162 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
163 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
164 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
165 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
166 { DRM_MODE_CONNECTOR_Component
, "Component" },
167 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
168 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
169 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
170 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
171 { DRM_MODE_CONNECTOR_TV
, "TV" },
172 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
173 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
174 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
177 static const struct drm_prop_enum_list drm_encoder_enum_list
[] =
178 { { DRM_MODE_ENCODER_NONE
, "None" },
179 { DRM_MODE_ENCODER_DAC
, "DAC" },
180 { DRM_MODE_ENCODER_TMDS
, "TMDS" },
181 { DRM_MODE_ENCODER_LVDS
, "LVDS" },
182 { DRM_MODE_ENCODER_TVDAC
, "TV" },
183 { DRM_MODE_ENCODER_VIRTUAL
, "Virtual" },
184 { DRM_MODE_ENCODER_DSI
, "DSI" },
185 { DRM_MODE_ENCODER_DPMST
, "DP MST" },
188 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] =
190 { SubPixelUnknown
, "Unknown" },
191 { SubPixelHorizontalRGB
, "Horizontal RGB" },
192 { SubPixelHorizontalBGR
, "Horizontal BGR" },
193 { SubPixelVerticalRGB
, "Vertical RGB" },
194 { SubPixelVerticalBGR
, "Vertical BGR" },
195 { SubPixelNone
, "None" },
198 void drm_connector_ida_init(void)
202 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
203 ida_init(&drm_connector_enum_list
[i
].ida
);
206 void drm_connector_ida_destroy(void)
210 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
211 ida_destroy(&drm_connector_enum_list
[i
].ida
);
215 * drm_get_connector_status_name - return a string for connector status
216 * @status: connector status to compute name of
218 * In contrast to the other drm_get_*_name functions this one here returns a
219 * const pointer and hence is threadsafe.
221 const char *drm_get_connector_status_name(enum drm_connector_status status
)
223 if (status
== connector_status_connected
)
225 else if (status
== connector_status_disconnected
)
226 return "disconnected";
230 EXPORT_SYMBOL(drm_get_connector_status_name
);
233 * drm_get_subpixel_order_name - return a string for a given subpixel enum
234 * @order: enum of subpixel_order
236 * Note you could abuse this and return something out of bounds, but that
237 * would be a caller error. No unscrubbed user data should make it here.
239 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
241 return drm_subpixel_enum_list
[order
].name
;
243 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
245 static char printable_char(int c
)
247 return isascii(c
) && isprint(c
) ? c
: '?';
251 * drm_get_format_name - return a string for drm fourcc format
252 * @format: format to compute name of
254 * Note that the buffer used by this function is globally shared and owned by
255 * the function itself.
257 * FIXME: This isn't really multithreading safe.
259 const char *drm_get_format_name(uint32_t format
)
263 snprintf(buf
, sizeof(buf
),
264 "%c%c%c%c %s-endian (0x%08x)",
265 printable_char(format
& 0xff),
266 printable_char((format
>> 8) & 0xff),
267 printable_char((format
>> 16) & 0xff),
268 printable_char((format
>> 24) & 0x7f),
269 format
& DRM_FORMAT_BIG_ENDIAN
? "big" : "little",
274 EXPORT_SYMBOL(drm_get_format_name
);
277 * Internal function to assign a slot in the object idr and optionally
278 * register the object into the idr.
280 static int drm_mode_object_get_reg(struct drm_device
*dev
,
281 struct drm_mode_object
*obj
,
287 mutex_lock(&dev
->mode_config
.idr_mutex
);
288 ret
= idr_alloc(&dev
->mode_config
.crtc_idr
, register_obj
? obj
: NULL
, 1, 0, GFP_KERNEL
);
291 * Set up the object linking under the protection of the idr
292 * lock so that other users can't see inconsistent state.
295 obj
->type
= obj_type
;
297 mutex_unlock(&dev
->mode_config
.idr_mutex
);
299 return ret
< 0 ? ret
: 0;
303 * drm_mode_object_get - allocate a new modeset identifier
305 * @obj: object pointer, used to generate unique ID
306 * @obj_type: object type
308 * Create a unique identifier based on @ptr in @dev's identifier space. Used
309 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
310 * modeset identifiers are _not_ reference counted. Hence don't use this for
311 * reference counted modeset objects like framebuffers.
314 * New unique (relative to other objects in @dev) integer identifier for the
317 int drm_mode_object_get(struct drm_device
*dev
,
318 struct drm_mode_object
*obj
, uint32_t obj_type
)
320 return drm_mode_object_get_reg(dev
, obj
, obj_type
, true);
323 static void drm_mode_object_register(struct drm_device
*dev
,
324 struct drm_mode_object
*obj
)
326 mutex_lock(&dev
->mode_config
.idr_mutex
);
327 idr_replace(&dev
->mode_config
.crtc_idr
, obj
, obj
->id
);
328 mutex_unlock(&dev
->mode_config
.idr_mutex
);
332 * drm_mode_object_put - free a modeset identifer
334 * @object: object to free
336 * Free @id from @dev's unique identifier pool. Note that despite the _get
337 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
338 * for reference counted modeset objects like framebuffers.
340 void drm_mode_object_put(struct drm_device
*dev
,
341 struct drm_mode_object
*object
)
343 mutex_lock(&dev
->mode_config
.idr_mutex
);
344 idr_remove(&dev
->mode_config
.crtc_idr
, object
->id
);
345 mutex_unlock(&dev
->mode_config
.idr_mutex
);
348 static struct drm_mode_object
*_object_find(struct drm_device
*dev
,
349 uint32_t id
, uint32_t type
)
351 struct drm_mode_object
*obj
= NULL
;
353 mutex_lock(&dev
->mode_config
.idr_mutex
);
354 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
355 if (obj
&& type
!= DRM_MODE_OBJECT_ANY
&& obj
->type
!= type
)
357 if (obj
&& obj
->id
!= id
)
359 /* don't leak out unref'd fb's */
360 if (obj
&& (obj
->type
== DRM_MODE_OBJECT_FB
))
362 mutex_unlock(&dev
->mode_config
.idr_mutex
);
368 * drm_mode_object_find - look up a drm object with static lifetime
370 * @id: id of the mode object
371 * @type: type of the mode object
373 * Note that framebuffers cannot be looked up with this functions - since those
374 * are reference counted, they need special treatment. Even with
375 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
376 * rather than WARN_ON()).
378 struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
379 uint32_t id
, uint32_t type
)
381 struct drm_mode_object
*obj
= NULL
;
383 /* Framebuffers are reference counted and need their own lookup
385 WARN_ON(type
== DRM_MODE_OBJECT_FB
);
386 obj
= _object_find(dev
, id
, type
);
389 EXPORT_SYMBOL(drm_mode_object_find
);
392 * drm_framebuffer_init - initialize a framebuffer
394 * @fb: framebuffer to be initialized
395 * @funcs: ... with these functions
397 * Allocates an ID for the framebuffer's parent mode object, sets its mode
398 * functions & device file and adds it to the master fd list.
401 * This functions publishes the fb and makes it available for concurrent access
402 * by other users. Which means by this point the fb _must_ be fully set up -
403 * since all the fb attributes are invariant over its lifetime, no further
404 * locking but only correct reference counting is required.
407 * Zero on success, error code on failure.
409 int drm_framebuffer_init(struct drm_device
*dev
, struct drm_framebuffer
*fb
,
410 const struct drm_framebuffer_funcs
*funcs
)
414 mutex_lock(&dev
->mode_config
.fb_lock
);
415 kref_init(&fb
->refcount
);
416 INIT_LIST_HEAD(&fb
->filp_head
);
420 ret
= drm_mode_object_get(dev
, &fb
->base
, DRM_MODE_OBJECT_FB
);
424 dev
->mode_config
.num_fb
++;
425 list_add(&fb
->head
, &dev
->mode_config
.fb_list
);
427 mutex_unlock(&dev
->mode_config
.fb_lock
);
431 EXPORT_SYMBOL(drm_framebuffer_init
);
433 /* dev->mode_config.fb_lock must be held! */
434 static void __drm_framebuffer_unregister(struct drm_device
*dev
,
435 struct drm_framebuffer
*fb
)
437 mutex_lock(&dev
->mode_config
.idr_mutex
);
438 idr_remove(&dev
->mode_config
.crtc_idr
, fb
->base
.id
);
439 mutex_unlock(&dev
->mode_config
.idr_mutex
);
444 static void drm_framebuffer_free(struct kref
*kref
)
446 struct drm_framebuffer
*fb
=
447 container_of(kref
, struct drm_framebuffer
, refcount
);
448 struct drm_device
*dev
= fb
->dev
;
451 * The lookup idr holds a weak reference, which has not necessarily been
452 * removed at this point. Check for that.
454 mutex_lock(&dev
->mode_config
.fb_lock
);
456 /* Mark fb as reaped and drop idr ref. */
457 __drm_framebuffer_unregister(dev
, fb
);
459 mutex_unlock(&dev
->mode_config
.fb_lock
);
461 fb
->funcs
->destroy(fb
);
464 static struct drm_framebuffer
*__drm_framebuffer_lookup(struct drm_device
*dev
,
467 struct drm_mode_object
*obj
= NULL
;
468 struct drm_framebuffer
*fb
;
470 mutex_lock(&dev
->mode_config
.idr_mutex
);
471 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
472 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_FB
) || (obj
->id
!= id
))
476 mutex_unlock(&dev
->mode_config
.idr_mutex
);
482 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
484 * @id: id of the fb object
486 * If successful, this grabs an additional reference to the framebuffer -
487 * callers need to make sure to eventually unreference the returned framebuffer
488 * again, using @drm_framebuffer_unreference.
490 struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
493 struct drm_framebuffer
*fb
;
495 mutex_lock(&dev
->mode_config
.fb_lock
);
496 fb
= __drm_framebuffer_lookup(dev
, id
);
498 if (!kref_get_unless_zero(&fb
->refcount
))
501 mutex_unlock(&dev
->mode_config
.fb_lock
);
505 EXPORT_SYMBOL(drm_framebuffer_lookup
);
508 * drm_framebuffer_unreference - unref a framebuffer
509 * @fb: framebuffer to unref
511 * This functions decrements the fb's refcount and frees it if it drops to zero.
513 void drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
515 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
516 kref_put(&fb
->refcount
, drm_framebuffer_free
);
518 EXPORT_SYMBOL(drm_framebuffer_unreference
);
521 * drm_framebuffer_reference - incr the fb refcnt
524 * This functions increments the fb's refcount.
526 void drm_framebuffer_reference(struct drm_framebuffer
*fb
)
528 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
529 kref_get(&fb
->refcount
);
531 EXPORT_SYMBOL(drm_framebuffer_reference
);
533 static void drm_framebuffer_free_bug(struct kref
*kref
)
538 static void __drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
540 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
541 kref_put(&fb
->refcount
, drm_framebuffer_free_bug
);
545 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
546 * @fb: fb to unregister
548 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
549 * those used for fbdev. Note that the caller must hold a reference of it's own,
550 * i.e. the object may not be destroyed through this call (since it'll lead to a
551 * locking inversion).
553 void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
)
555 struct drm_device
*dev
= fb
->dev
;
557 mutex_lock(&dev
->mode_config
.fb_lock
);
558 /* Mark fb as reaped and drop idr ref. */
559 __drm_framebuffer_unregister(dev
, fb
);
560 mutex_unlock(&dev
->mode_config
.fb_lock
);
562 EXPORT_SYMBOL(drm_framebuffer_unregister_private
);
565 * drm_framebuffer_cleanup - remove a framebuffer object
566 * @fb: framebuffer to remove
568 * Cleanup framebuffer. This function is intended to be used from the drivers
569 * ->destroy callback. It can also be used to clean up driver private
570 * framebuffers embedded into a larger structure.
572 * Note that this function does not remove the fb from active usuage - if it is
573 * still used anywhere, hilarity can ensue since userspace could call getfb on
574 * the id and get back -EINVAL. Obviously no concern at driver unload time.
576 * Also, the framebuffer will not be removed from the lookup idr - for
577 * user-created framebuffers this will happen in in the rmfb ioctl. For
578 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
579 * drm_framebuffer_unregister_private.
581 void drm_framebuffer_cleanup(struct drm_framebuffer
*fb
)
583 struct drm_device
*dev
= fb
->dev
;
585 mutex_lock(&dev
->mode_config
.fb_lock
);
587 dev
->mode_config
.num_fb
--;
588 mutex_unlock(&dev
->mode_config
.fb_lock
);
590 EXPORT_SYMBOL(drm_framebuffer_cleanup
);
593 * drm_framebuffer_remove - remove and unreference a framebuffer object
594 * @fb: framebuffer to remove
596 * Scans all the CRTCs and planes in @dev's mode_config. If they're
597 * using @fb, removes it, setting it to NULL. Then drops the reference to the
598 * passed-in framebuffer. Might take the modeset locks.
600 * Note that this function optimizes the cleanup away if the caller holds the
601 * last reference to the framebuffer. It is also guaranteed to not take the
602 * modeset locks in this case.
604 void drm_framebuffer_remove(struct drm_framebuffer
*fb
)
606 struct drm_device
*dev
= fb
->dev
;
607 struct drm_crtc
*crtc
;
608 struct drm_plane
*plane
;
609 struct drm_mode_set set
;
612 WARN_ON(!list_empty(&fb
->filp_head
));
615 * drm ABI mandates that we remove any deleted framebuffers from active
616 * useage. But since most sane clients only remove framebuffers they no
617 * longer need, try to optimize this away.
619 * Since we're holding a reference ourselves, observing a refcount of 1
620 * means that we're the last holder and can skip it. Also, the refcount
621 * can never increase from 1 again, so we don't need any barriers or
624 * Note that userspace could try to race with use and instate a new
625 * usage _after_ we've cleared all current ones. End result will be an
626 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
629 if (atomic_read(&fb
->refcount
.refcount
) > 1) {
630 drm_modeset_lock_all(dev
);
631 /* remove from any CRTC */
632 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
633 if (crtc
->primary
->fb
== fb
) {
634 /* should turn off the crtc */
635 memset(&set
, 0, sizeof(struct drm_mode_set
));
638 ret
= drm_mode_set_config_internal(&set
);
640 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc
);
644 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
) {
646 drm_plane_force_disable(plane
);
648 drm_modeset_unlock_all(dev
);
651 drm_framebuffer_unreference(fb
);
653 EXPORT_SYMBOL(drm_framebuffer_remove
);
655 DEFINE_WW_CLASS(crtc_ww_class
);
658 * drm_crtc_init_with_planes - Initialise a new CRTC object with
659 * specified primary and cursor planes.
661 * @crtc: CRTC object to init
662 * @primary: Primary plane for CRTC
663 * @cursor: Cursor plane for CRTC
664 * @funcs: callbacks for the new CRTC
666 * Inits a new object created as base part of a driver crtc object.
669 * Zero on success, error code on failure.
671 int drm_crtc_init_with_planes(struct drm_device
*dev
, struct drm_crtc
*crtc
,
672 struct drm_plane
*primary
,
673 struct drm_plane
*cursor
,
674 const struct drm_crtc_funcs
*funcs
)
676 struct drm_mode_config
*config
= &dev
->mode_config
;
681 crtc
->invert_dimensions
= false;
683 drm_modeset_lock_init(&crtc
->mutex
);
684 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
688 crtc
->base
.properties
= &crtc
->properties
;
690 list_add_tail(&crtc
->head
, &config
->crtc_list
);
693 crtc
->primary
= primary
;
694 crtc
->cursor
= cursor
;
696 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
698 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
702 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
705 * drm_crtc_cleanup - Clean up the core crtc usage
706 * @crtc: CRTC to cleanup
708 * This function cleans up @crtc and removes it from the DRM mode setting
709 * core. Note that the function does *not* free the crtc structure itself,
710 * this is the responsibility of the caller.
712 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
714 struct drm_device
*dev
= crtc
->dev
;
716 kfree(crtc
->gamma_store
);
717 crtc
->gamma_store
= NULL
;
719 drm_modeset_lock_fini(&crtc
->mutex
);
721 drm_mode_object_put(dev
, &crtc
->base
);
722 list_del(&crtc
->head
);
723 dev
->mode_config
.num_crtc
--;
725 EXPORT_SYMBOL(drm_crtc_cleanup
);
728 * drm_crtc_index - find the index of a registered CRTC
729 * @crtc: CRTC to find index for
731 * Given a registered CRTC, return the index of that CRTC within a DRM
732 * device's list of CRTCs.
734 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
736 unsigned int index
= 0;
737 struct drm_crtc
*tmp
;
739 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
748 EXPORT_SYMBOL(drm_crtc_index
);
751 * drm_mode_remove - remove and free a mode
752 * @connector: connector list to modify
753 * @mode: mode to remove
755 * Remove @mode from @connector's mode list, then free it.
757 static void drm_mode_remove(struct drm_connector
*connector
,
758 struct drm_display_mode
*mode
)
760 list_del(&mode
->head
);
761 drm_mode_destroy(connector
->dev
, mode
);
765 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
766 * @connector: connector to quwery
768 * The kernel supports per-connector configration of its consoles through
769 * use of the video= parameter. This function parses that option and
770 * extracts the user's specified mode (or enable/disable status) for a
771 * particular connector. This is typically only used during the early fbdev
774 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
776 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
779 if (fb_get_options(connector
->name
, &option
))
782 if (!drm_mode_parse_command_line_for_connector(option
,
790 switch (mode
->force
) {
794 case DRM_FORCE_ON_DIGITAL
:
803 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
804 connector
->force
= mode
->force
;
807 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
809 mode
->xres
, mode
->yres
,
810 mode
->refresh_specified
? mode
->refresh
: 60,
811 mode
->rb
? " reduced blanking" : "",
812 mode
->margins
? " with margins" : "",
813 mode
->interlace
? " interlaced" : "");
817 * drm_connector_init - Init a preallocated connector
819 * @connector: the connector to init
820 * @funcs: callbacks for this connector
821 * @connector_type: user visible type of the connector
823 * Initialises a preallocated connector. Connectors should be
824 * subclassed as part of driver connector objects.
827 * Zero on success, error code on failure.
829 int drm_connector_init(struct drm_device
*dev
,
830 struct drm_connector
*connector
,
831 const struct drm_connector_funcs
*funcs
,
835 struct ida
*connector_ida
=
836 &drm_connector_enum_list
[connector_type
].ida
;
838 drm_modeset_lock_all(dev
);
840 ret
= drm_mode_object_get_reg(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
, false);
844 connector
->base
.properties
= &connector
->properties
;
845 connector
->dev
= dev
;
846 connector
->funcs
= funcs
;
847 connector
->connector_type
= connector_type
;
848 connector
->connector_type_id
=
849 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
850 if (connector
->connector_type_id
< 0) {
851 ret
= connector
->connector_type_id
;
855 kasprintf(GFP_KERNEL
, "%s-%d",
856 drm_connector_enum_list
[connector_type
].name
,
857 connector
->connector_type_id
);
858 if (!connector
->name
) {
863 INIT_LIST_HEAD(&connector
->probed_modes
);
864 INIT_LIST_HEAD(&connector
->modes
);
865 connector
->edid_blob_ptr
= NULL
;
866 connector
->status
= connector_status_unknown
;
868 drm_connector_get_cmdline_mode(connector
);
870 /* We should add connectors at the end to avoid upsetting the 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
;
935 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
937 WARN_ON(!drm_modeset_is_locked(&config
->connection_mutex
));
939 list_for_each_entry(tmp
, &connector
->dev
->mode_config
.connector_list
, head
) {
940 if (tmp
== connector
)
948 EXPORT_SYMBOL(drm_connector_index
);
951 * drm_connector_register - register a connector
952 * @connector: the connector to register
954 * Register userspace interfaces for a connector
957 * Zero on success, error code on failure.
959 int drm_connector_register(struct drm_connector
*connector
)
963 drm_mode_object_register(connector
->dev
, &connector
->base
);
965 ret
= drm_sysfs_connector_add(connector
);
969 ret
= drm_debugfs_connector_add(connector
);
971 drm_sysfs_connector_remove(connector
);
977 EXPORT_SYMBOL(drm_connector_register
);
980 * drm_connector_unregister - unregister a connector
981 * @connector: the connector to unregister
983 * Unregister userspace interfaces for a connector
985 void drm_connector_unregister(struct drm_connector
*connector
)
987 drm_sysfs_connector_remove(connector
);
988 drm_debugfs_connector_remove(connector
);
990 EXPORT_SYMBOL(drm_connector_unregister
);
994 * drm_connector_unplug_all - unregister connector userspace interfaces
997 * This function unregisters all connector userspace interfaces in sysfs. Should
998 * be call when the device is disconnected, e.g. from an usb driver's
999 * ->disconnect callback.
1001 void drm_connector_unplug_all(struct drm_device
*dev
)
1003 struct drm_connector
*connector
;
1005 /* taking the mode config mutex ends up in a clash with sysfs */
1006 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1007 drm_connector_unregister(connector
);
1010 EXPORT_SYMBOL(drm_connector_unplug_all
);
1013 * drm_bridge_init - initialize a drm transcoder/bridge
1015 * @bridge: transcoder/bridge to set up
1016 * @funcs: bridge function table
1018 * Initialises a preallocated bridge. Bridges should be
1019 * subclassed as part of driver connector objects.
1022 * Zero on success, error code on failure.
1024 int drm_bridge_init(struct drm_device
*dev
, struct drm_bridge
*bridge
,
1025 const struct drm_bridge_funcs
*funcs
)
1029 drm_modeset_lock_all(dev
);
1031 ret
= drm_mode_object_get(dev
, &bridge
->base
, DRM_MODE_OBJECT_BRIDGE
);
1036 bridge
->funcs
= funcs
;
1038 list_add_tail(&bridge
->head
, &dev
->mode_config
.bridge_list
);
1039 dev
->mode_config
.num_bridge
++;
1042 drm_modeset_unlock_all(dev
);
1045 EXPORT_SYMBOL(drm_bridge_init
);
1048 * drm_bridge_cleanup - cleans up an initialised bridge
1049 * @bridge: bridge to cleanup
1051 * Cleans up the bridge but doesn't free the object.
1053 void drm_bridge_cleanup(struct drm_bridge
*bridge
)
1055 struct drm_device
*dev
= bridge
->dev
;
1057 drm_modeset_lock_all(dev
);
1058 drm_mode_object_put(dev
, &bridge
->base
);
1059 list_del(&bridge
->head
);
1060 dev
->mode_config
.num_bridge
--;
1061 drm_modeset_unlock_all(dev
);
1063 EXPORT_SYMBOL(drm_bridge_cleanup
);
1066 * drm_encoder_init - Init a preallocated encoder
1068 * @encoder: the encoder to init
1069 * @funcs: callbacks for this encoder
1070 * @encoder_type: user visible type of the encoder
1072 * Initialises a preallocated encoder. Encoder should be
1073 * subclassed as part of driver encoder objects.
1076 * Zero on success, error code on failure.
1078 int drm_encoder_init(struct drm_device
*dev
,
1079 struct drm_encoder
*encoder
,
1080 const struct drm_encoder_funcs
*funcs
,
1085 drm_modeset_lock_all(dev
);
1087 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1092 encoder
->encoder_type
= encoder_type
;
1093 encoder
->funcs
= funcs
;
1094 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1095 drm_encoder_enum_list
[encoder_type
].name
,
1097 if (!encoder
->name
) {
1102 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1103 dev
->mode_config
.num_encoder
++;
1107 drm_mode_object_put(dev
, &encoder
->base
);
1110 drm_modeset_unlock_all(dev
);
1114 EXPORT_SYMBOL(drm_encoder_init
);
1117 * drm_encoder_cleanup - cleans up an initialised encoder
1118 * @encoder: encoder to cleanup
1120 * Cleans up the encoder but doesn't free the object.
1122 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1124 struct drm_device
*dev
= encoder
->dev
;
1125 drm_modeset_lock_all(dev
);
1126 drm_mode_object_put(dev
, &encoder
->base
);
1127 kfree(encoder
->name
);
1128 encoder
->name
= NULL
;
1129 list_del(&encoder
->head
);
1130 dev
->mode_config
.num_encoder
--;
1131 drm_modeset_unlock_all(dev
);
1133 EXPORT_SYMBOL(drm_encoder_cleanup
);
1136 * drm_universal_plane_init - Initialize a new universal plane object
1138 * @plane: plane object to init
1139 * @possible_crtcs: bitmask of possible CRTCs
1140 * @funcs: callbacks for the new plane
1141 * @formats: array of supported formats (%DRM_FORMAT_*)
1142 * @format_count: number of elements in @formats
1143 * @type: type of plane (overlay, primary, cursor)
1145 * Initializes a plane object of type @type.
1148 * Zero on success, error code on failure.
1150 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1151 unsigned long possible_crtcs
,
1152 const struct drm_plane_funcs
*funcs
,
1153 const uint32_t *formats
, uint32_t format_count
,
1154 enum drm_plane_type type
)
1158 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1162 drm_modeset_lock_init(&plane
->mutex
);
1164 plane
->base
.properties
= &plane
->properties
;
1166 plane
->funcs
= funcs
;
1167 plane
->format_types
= kmalloc(sizeof(uint32_t) * format_count
,
1169 if (!plane
->format_types
) {
1170 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1171 drm_mode_object_put(dev
, &plane
->base
);
1175 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1176 plane
->format_count
= format_count
;
1177 plane
->possible_crtcs
= possible_crtcs
;
1180 list_add_tail(&plane
->head
, &dev
->mode_config
.plane_list
);
1181 dev
->mode_config
.num_total_plane
++;
1182 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1183 dev
->mode_config
.num_overlay_plane
++;
1185 drm_object_attach_property(&plane
->base
,
1186 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, negative 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
);
1538 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1541 * Create the the suggested x/y offset property for connectors.
1543 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1545 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1548 dev
->mode_config
.suggested_x_property
=
1549 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1551 dev
->mode_config
.suggested_y_property
=
1552 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1554 if (dev
->mode_config
.suggested_x_property
== NULL
||
1555 dev
->mode_config
.suggested_y_property
== NULL
)
1559 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1561 static int drm_mode_group_init(struct drm_device
*dev
, struct drm_mode_group
*group
)
1563 uint32_t total_objects
= 0;
1565 total_objects
+= dev
->mode_config
.num_crtc
;
1566 total_objects
+= dev
->mode_config
.num_connector
;
1567 total_objects
+= dev
->mode_config
.num_encoder
;
1568 total_objects
+= dev
->mode_config
.num_bridge
;
1570 group
->id_list
= kzalloc(total_objects
* sizeof(uint32_t), GFP_KERNEL
);
1571 if (!group
->id_list
)
1574 group
->num_crtcs
= 0;
1575 group
->num_connectors
= 0;
1576 group
->num_encoders
= 0;
1577 group
->num_bridges
= 0;
1581 void drm_mode_group_destroy(struct drm_mode_group
*group
)
1583 kfree(group
->id_list
);
1584 group
->id_list
= NULL
;
1588 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1589 * the drm core's responsibility to set up mode control groups.
1591 int drm_mode_group_init_legacy_group(struct drm_device
*dev
,
1592 struct drm_mode_group
*group
)
1594 struct drm_crtc
*crtc
;
1595 struct drm_encoder
*encoder
;
1596 struct drm_connector
*connector
;
1597 struct drm_bridge
*bridge
;
1600 if ((ret
= drm_mode_group_init(dev
, group
)))
1603 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
1604 group
->id_list
[group
->num_crtcs
++] = crtc
->base
.id
;
1606 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
1607 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
++] =
1610 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1611 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1612 group
->num_connectors
++] = connector
->base
.id
;
1614 list_for_each_entry(bridge
, &dev
->mode_config
.bridge_list
, head
)
1615 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1616 group
->num_connectors
+ group
->num_bridges
++] =
1621 EXPORT_SYMBOL(drm_mode_group_init_legacy_group
);
1623 void drm_reinit_primary_mode_group(struct drm_device
*dev
)
1625 drm_modeset_lock_all(dev
);
1626 drm_mode_group_destroy(&dev
->primary
->mode_group
);
1627 drm_mode_group_init_legacy_group(dev
, &dev
->primary
->mode_group
);
1628 drm_modeset_unlock_all(dev
);
1630 EXPORT_SYMBOL(drm_reinit_primary_mode_group
);
1633 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1634 * @out: drm_mode_modeinfo struct to return to the user
1635 * @in: drm_display_mode to use
1637 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1640 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo
*out
,
1641 const struct drm_display_mode
*in
)
1643 WARN(in
->hdisplay
> USHRT_MAX
|| in
->hsync_start
> USHRT_MAX
||
1644 in
->hsync_end
> USHRT_MAX
|| in
->htotal
> USHRT_MAX
||
1645 in
->hskew
> USHRT_MAX
|| in
->vdisplay
> USHRT_MAX
||
1646 in
->vsync_start
> USHRT_MAX
|| in
->vsync_end
> USHRT_MAX
||
1647 in
->vtotal
> USHRT_MAX
|| in
->vscan
> USHRT_MAX
,
1648 "timing values too large for mode info\n");
1650 out
->clock
= in
->clock
;
1651 out
->hdisplay
= in
->hdisplay
;
1652 out
->hsync_start
= in
->hsync_start
;
1653 out
->hsync_end
= in
->hsync_end
;
1654 out
->htotal
= in
->htotal
;
1655 out
->hskew
= in
->hskew
;
1656 out
->vdisplay
= in
->vdisplay
;
1657 out
->vsync_start
= in
->vsync_start
;
1658 out
->vsync_end
= in
->vsync_end
;
1659 out
->vtotal
= in
->vtotal
;
1660 out
->vscan
= in
->vscan
;
1661 out
->vrefresh
= in
->vrefresh
;
1662 out
->flags
= in
->flags
;
1663 out
->type
= in
->type
;
1664 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1665 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1669 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1670 * @out: drm_display_mode to return to the user
1671 * @in: drm_mode_modeinfo to use
1673 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1677 * Zero on success, negative errno on failure.
1679 static int drm_crtc_convert_umode(struct drm_display_mode
*out
,
1680 const struct drm_mode_modeinfo
*in
)
1682 if (in
->clock
> INT_MAX
|| in
->vrefresh
> INT_MAX
)
1685 if ((in
->flags
& DRM_MODE_FLAG_3D_MASK
) > DRM_MODE_FLAG_3D_MAX
)
1688 out
->clock
= in
->clock
;
1689 out
->hdisplay
= in
->hdisplay
;
1690 out
->hsync_start
= in
->hsync_start
;
1691 out
->hsync_end
= in
->hsync_end
;
1692 out
->htotal
= in
->htotal
;
1693 out
->hskew
= in
->hskew
;
1694 out
->vdisplay
= in
->vdisplay
;
1695 out
->vsync_start
= in
->vsync_start
;
1696 out
->vsync_end
= in
->vsync_end
;
1697 out
->vtotal
= in
->vtotal
;
1698 out
->vscan
= in
->vscan
;
1699 out
->vrefresh
= in
->vrefresh
;
1700 out
->flags
= in
->flags
;
1701 out
->type
= in
->type
;
1702 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1703 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1709 * drm_mode_getresources - get graphics configuration
1710 * @dev: drm device for the ioctl
1711 * @data: data pointer for the ioctl
1712 * @file_priv: drm file for the ioctl call
1714 * Construct a set of configuration description structures and return
1715 * them to the user, including CRTC, connector and framebuffer configuration.
1717 * Called by the user via ioctl.
1720 * Zero on success, negative errno on failure.
1722 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1723 struct drm_file
*file_priv
)
1725 struct drm_mode_card_res
*card_res
= data
;
1726 struct list_head
*lh
;
1727 struct drm_framebuffer
*fb
;
1728 struct drm_connector
*connector
;
1729 struct drm_crtc
*crtc
;
1730 struct drm_encoder
*encoder
;
1732 int connector_count
= 0;
1735 int encoder_count
= 0;
1737 uint32_t __user
*fb_id
;
1738 uint32_t __user
*crtc_id
;
1739 uint32_t __user
*connector_id
;
1740 uint32_t __user
*encoder_id
;
1741 struct drm_mode_group
*mode_group
;
1743 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1747 mutex_lock(&file_priv
->fbs_lock
);
1749 * For the non-control nodes we need to limit the list of resources
1750 * by IDs in the group list for this node
1752 list_for_each(lh
, &file_priv
->fbs
)
1755 /* handle this in 4 parts */
1757 if (card_res
->count_fbs
>= fb_count
) {
1759 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1760 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1761 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1762 mutex_unlock(&file_priv
->fbs_lock
);
1768 card_res
->count_fbs
= fb_count
;
1769 mutex_unlock(&file_priv
->fbs_lock
);
1771 /* mode_config.mutex protects the connector list against e.g. DP MST
1772 * connector hot-adding. CRTC/Plane lists are invariant. */
1773 mutex_lock(&dev
->mode_config
.mutex
);
1774 if (!drm_is_primary_client(file_priv
)) {
1777 list_for_each(lh
, &dev
->mode_config
.crtc_list
)
1780 list_for_each(lh
, &dev
->mode_config
.connector_list
)
1783 list_for_each(lh
, &dev
->mode_config
.encoder_list
)
1787 mode_group
= &file_priv
->master
->minor
->mode_group
;
1788 crtc_count
= mode_group
->num_crtcs
;
1789 connector_count
= mode_group
->num_connectors
;
1790 encoder_count
= mode_group
->num_encoders
;
1793 card_res
->max_height
= dev
->mode_config
.max_height
;
1794 card_res
->min_height
= dev
->mode_config
.min_height
;
1795 card_res
->max_width
= dev
->mode_config
.max_width
;
1796 card_res
->min_width
= dev
->mode_config
.min_width
;
1799 if (card_res
->count_crtcs
>= crtc_count
) {
1801 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1803 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
,
1805 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1806 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1813 for (i
= 0; i
< mode_group
->num_crtcs
; i
++) {
1814 if (put_user(mode_group
->id_list
[i
],
1815 crtc_id
+ copied
)) {
1823 card_res
->count_crtcs
= crtc_count
;
1826 if (card_res
->count_encoders
>= encoder_count
) {
1828 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1830 list_for_each_entry(encoder
,
1831 &dev
->mode_config
.encoder_list
,
1833 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1835 if (put_user(encoder
->base
.id
, encoder_id
+
1843 for (i
= mode_group
->num_crtcs
; i
< mode_group
->num_crtcs
+ mode_group
->num_encoders
; i
++) {
1844 if (put_user(mode_group
->id_list
[i
],
1845 encoder_id
+ copied
)) {
1854 card_res
->count_encoders
= encoder_count
;
1857 if (card_res
->count_connectors
>= connector_count
) {
1859 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1861 list_for_each_entry(connector
,
1862 &dev
->mode_config
.connector_list
,
1864 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1867 if (put_user(connector
->base
.id
,
1868 connector_id
+ copied
)) {
1875 int start
= mode_group
->num_crtcs
+
1876 mode_group
->num_encoders
;
1877 for (i
= start
; i
< start
+ mode_group
->num_connectors
; i
++) {
1878 if (put_user(mode_group
->id_list
[i
],
1879 connector_id
+ copied
)) {
1887 card_res
->count_connectors
= connector_count
;
1889 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1890 card_res
->count_connectors
, card_res
->count_encoders
);
1893 mutex_unlock(&dev
->mode_config
.mutex
);
1898 * drm_mode_getcrtc - get CRTC configuration
1899 * @dev: drm device for the ioctl
1900 * @data: data pointer for the ioctl
1901 * @file_priv: drm file for the ioctl call
1903 * Construct a CRTC configuration structure to return to the user.
1905 * Called by the user via ioctl.
1908 * Zero on success, negative errno on failure.
1910 int drm_mode_getcrtc(struct drm_device
*dev
,
1911 void *data
, struct drm_file
*file_priv
)
1913 struct drm_mode_crtc
*crtc_resp
= data
;
1914 struct drm_crtc
*crtc
;
1916 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1919 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
1923 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
1924 crtc_resp
->x
= crtc
->x
;
1925 crtc_resp
->y
= crtc
->y
;
1926 crtc_resp
->gamma_size
= crtc
->gamma_size
;
1927 if (crtc
->primary
->fb
)
1928 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
1930 crtc_resp
->fb_id
= 0;
1932 if (crtc
->enabled
) {
1934 drm_crtc_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
1935 crtc_resp
->mode_valid
= 1;
1938 crtc_resp
->mode_valid
= 0;
1940 drm_modeset_unlock_crtc(crtc
);
1945 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1946 const struct drm_file
*file_priv
)
1949 * If user-space hasn't configured the driver to expose the stereo 3D
1950 * modes, don't expose them.
1952 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
1959 * drm_mode_getconnector - get connector configuration
1960 * @dev: drm device for the ioctl
1961 * @data: data pointer for the ioctl
1962 * @file_priv: drm file for the ioctl call
1964 * Construct a connector configuration structure to return to the user.
1966 * Called by the user via ioctl.
1969 * Zero on success, negative errno on failure.
1971 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
1972 struct drm_file
*file_priv
)
1974 struct drm_mode_get_connector
*out_resp
= data
;
1975 struct drm_connector
*connector
;
1976 struct drm_display_mode
*mode
;
1978 int props_count
= 0;
1979 int encoders_count
= 0;
1983 struct drm_mode_modeinfo u_mode
;
1984 struct drm_mode_modeinfo __user
*mode_ptr
;
1985 uint32_t __user
*prop_ptr
;
1986 uint64_t __user
*prop_values
;
1987 uint32_t __user
*encoder_ptr
;
1989 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1992 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
1994 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
1996 mutex_lock(&dev
->mode_config
.mutex
);
1998 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
2004 props_count
= connector
->properties
.count
;
2006 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2007 if (connector
->encoder_ids
[i
] != 0) {
2012 if (out_resp
->count_modes
== 0) {
2013 connector
->funcs
->fill_modes(connector
,
2014 dev
->mode_config
.max_width
,
2015 dev
->mode_config
.max_height
);
2018 /* delayed so we get modes regardless of pre-fill_modes state */
2019 list_for_each_entry(mode
, &connector
->modes
, head
)
2020 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2023 out_resp
->connector_id
= connector
->base
.id
;
2024 out_resp
->connector_type
= connector
->connector_type
;
2025 out_resp
->connector_type_id
= connector
->connector_type_id
;
2026 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2027 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2028 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2029 out_resp
->connection
= connector
->status
;
2030 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2031 if (connector
->encoder
)
2032 out_resp
->encoder_id
= connector
->encoder
->base
.id
;
2034 out_resp
->encoder_id
= 0;
2035 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2038 * This ioctl is called twice, once to determine how much space is
2039 * needed, and the 2nd time to fill it.
2041 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2043 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2044 list_for_each_entry(mode
, &connector
->modes
, head
) {
2045 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2048 drm_crtc_convert_to_umode(&u_mode
, mode
);
2049 if (copy_to_user(mode_ptr
+ copied
,
2050 &u_mode
, sizeof(u_mode
))) {
2057 out_resp
->count_modes
= mode_count
;
2059 if ((out_resp
->count_props
>= props_count
) && props_count
) {
2061 prop_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
);
2062 prop_values
= (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
);
2063 for (i
= 0; i
< connector
->properties
.count
; i
++) {
2064 if (put_user(connector
->properties
.ids
[i
],
2065 prop_ptr
+ copied
)) {
2070 if (put_user(connector
->properties
.values
[i
],
2071 prop_values
+ copied
)) {
2078 out_resp
->count_props
= props_count
;
2080 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2082 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2083 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2084 if (connector
->encoder_ids
[i
] != 0) {
2085 if (put_user(connector
->encoder_ids
[i
],
2086 encoder_ptr
+ copied
)) {
2094 out_resp
->count_encoders
= encoders_count
;
2097 mutex_unlock(&dev
->mode_config
.mutex
);
2103 * drm_mode_getencoder - get encoder configuration
2104 * @dev: drm device for the ioctl
2105 * @data: data pointer for the ioctl
2106 * @file_priv: drm file for the ioctl call
2108 * Construct a encoder configuration structure to return to the user.
2110 * Called by the user via ioctl.
2113 * Zero on success, negative errno on failure.
2115 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2116 struct drm_file
*file_priv
)
2118 struct drm_mode_get_encoder
*enc_resp
= data
;
2119 struct drm_encoder
*encoder
;
2121 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2124 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2128 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2130 enc_resp
->crtc_id
= encoder
->crtc
->base
.id
;
2132 enc_resp
->crtc_id
= 0;
2133 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2135 enc_resp
->encoder_type
= encoder
->encoder_type
;
2136 enc_resp
->encoder_id
= encoder
->base
.id
;
2137 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2138 enc_resp
->possible_clones
= encoder
->possible_clones
;
2144 * drm_mode_getplane_res - enumerate all plane resources
2147 * @file_priv: DRM file info
2149 * Construct a list of plane ids to return to the user.
2151 * Called by the user via ioctl.
2154 * Zero on success, negative errno on failure.
2156 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2157 struct drm_file
*file_priv
)
2159 struct drm_mode_get_plane_res
*plane_resp
= data
;
2160 struct drm_mode_config
*config
;
2161 struct drm_plane
*plane
;
2162 uint32_t __user
*plane_ptr
;
2164 unsigned num_planes
;
2166 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2169 config
= &dev
->mode_config
;
2171 if (file_priv
->universal_planes
)
2172 num_planes
= config
->num_total_plane
;
2174 num_planes
= config
->num_overlay_plane
;
2177 * This ioctl is called twice, once to determine how much space is
2178 * needed, and the 2nd time to fill it.
2181 (plane_resp
->count_planes
>= num_planes
)) {
2182 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2184 /* Plane lists are invariant, no locking needed. */
2185 list_for_each_entry(plane
, &config
->plane_list
, head
) {
2187 * Unless userspace set the 'universal planes'
2188 * capability bit, only advertise overlays.
2190 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2191 !file_priv
->universal_planes
)
2194 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2199 plane_resp
->count_planes
= num_planes
;
2205 * drm_mode_getplane - get plane configuration
2208 * @file_priv: DRM file info
2210 * Construct a plane configuration structure to return to the user.
2212 * Called by the user via ioctl.
2215 * Zero on success, negative errno on failure.
2217 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2218 struct drm_file
*file_priv
)
2220 struct drm_mode_get_plane
*plane_resp
= data
;
2221 struct drm_plane
*plane
;
2222 uint32_t __user
*format_ptr
;
2224 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2227 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2231 drm_modeset_lock(&plane
->mutex
, NULL
);
2233 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2235 plane_resp
->crtc_id
= 0;
2238 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2240 plane_resp
->fb_id
= 0;
2241 drm_modeset_unlock(&plane
->mutex
);
2243 plane_resp
->plane_id
= plane
->base
.id
;
2244 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2245 plane_resp
->gamma_size
= 0;
2248 * This ioctl is called twice, once to determine how much space is
2249 * needed, and the 2nd time to fill it.
2251 if (plane
->format_count
&&
2252 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2253 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2254 if (copy_to_user(format_ptr
,
2255 plane
->format_types
,
2256 sizeof(uint32_t) * plane
->format_count
)) {
2260 plane_resp
->count_format_types
= plane
->format_count
;
2266 * setplane_internal - setplane handler for internal callers
2268 * Note that we assume an extra reference has already been taken on fb. If the
2269 * update fails, this reference will be dropped before return; if it succeeds,
2270 * the previous framebuffer (if any) will be unreferenced instead.
2272 * src_{x,y,w,h} are provided in 16.16 fixed point format
2274 static int __setplane_internal(struct drm_plane
*plane
,
2275 struct drm_crtc
*crtc
,
2276 struct drm_framebuffer
*fb
,
2277 int32_t crtc_x
, int32_t crtc_y
,
2278 uint32_t crtc_w
, uint32_t crtc_h
,
2279 /* src_{x,y,w,h} values are 16.16 fixed point */
2280 uint32_t src_x
, uint32_t src_y
,
2281 uint32_t src_w
, uint32_t src_h
)
2284 unsigned int fb_width
, fb_height
;
2287 /* No fb means shut it down */
2289 plane
->old_fb
= plane
->fb
;
2290 ret
= plane
->funcs
->disable_plane(plane
);
2295 plane
->old_fb
= NULL
;
2300 /* Check whether this plane is usable on this CRTC */
2301 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2302 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2307 /* Check whether this plane supports the fb pixel format. */
2308 for (i
= 0; i
< plane
->format_count
; i
++)
2309 if (fb
->pixel_format
== plane
->format_types
[i
])
2311 if (i
== plane
->format_count
) {
2312 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2313 drm_get_format_name(fb
->pixel_format
));
2318 fb_width
= fb
->width
<< 16;
2319 fb_height
= fb
->height
<< 16;
2321 /* Make sure source coordinates are inside the fb. */
2322 if (src_w
> fb_width
||
2323 src_x
> fb_width
- src_w
||
2324 src_h
> fb_height
||
2325 src_y
> fb_height
- src_h
) {
2326 DRM_DEBUG_KMS("Invalid source coordinates "
2327 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2328 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2329 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2330 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2331 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2336 plane
->old_fb
= plane
->fb
;
2337 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2338 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2339 src_x
, src_y
, src_w
, src_h
);
2345 plane
->old_fb
= NULL
;
2350 drm_framebuffer_unreference(fb
);
2352 drm_framebuffer_unreference(plane
->old_fb
);
2353 plane
->old_fb
= NULL
;
2358 static int setplane_internal(struct drm_plane
*plane
,
2359 struct drm_crtc
*crtc
,
2360 struct drm_framebuffer
*fb
,
2361 int32_t crtc_x
, int32_t crtc_y
,
2362 uint32_t crtc_w
, uint32_t crtc_h
,
2363 /* src_{x,y,w,h} values are 16.16 fixed point */
2364 uint32_t src_x
, uint32_t src_y
,
2365 uint32_t src_w
, uint32_t src_h
)
2369 drm_modeset_lock_all(plane
->dev
);
2370 ret
= __setplane_internal(plane
, crtc
, fb
,
2371 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2372 src_x
, src_y
, src_w
, src_h
);
2373 drm_modeset_unlock_all(plane
->dev
);
2379 * drm_mode_setplane - configure a plane's configuration
2381 * @data: ioctl data*
2382 * @file_priv: DRM file info
2384 * Set plane configuration, including placement, fb, scaling, and other factors.
2385 * Or pass a NULL fb to disable (planes may be disabled without providing a
2389 * Zero on success, negative errno on failure.
2391 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2392 struct drm_file
*file_priv
)
2394 struct drm_mode_set_plane
*plane_req
= data
;
2395 struct drm_mode_object
*obj
;
2396 struct drm_plane
*plane
;
2397 struct drm_crtc
*crtc
= NULL
;
2398 struct drm_framebuffer
*fb
= NULL
;
2400 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2403 /* Give drivers some help against integer overflows */
2404 if (plane_req
->crtc_w
> INT_MAX
||
2405 plane_req
->crtc_x
> INT_MAX
- (int32_t) plane_req
->crtc_w
||
2406 plane_req
->crtc_h
> INT_MAX
||
2407 plane_req
->crtc_y
> INT_MAX
- (int32_t) plane_req
->crtc_h
) {
2408 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2409 plane_req
->crtc_w
, plane_req
->crtc_h
,
2410 plane_req
->crtc_x
, plane_req
->crtc_y
);
2415 * First, find the plane, crtc, and fb objects. If not available,
2416 * we don't bother to call the driver.
2418 obj
= drm_mode_object_find(dev
, plane_req
->plane_id
,
2419 DRM_MODE_OBJECT_PLANE
);
2421 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2422 plane_req
->plane_id
);
2425 plane
= obj_to_plane(obj
);
2427 if (plane_req
->fb_id
) {
2428 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2430 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2435 obj
= drm_mode_object_find(dev
, plane_req
->crtc_id
,
2436 DRM_MODE_OBJECT_CRTC
);
2438 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2439 plane_req
->crtc_id
);
2442 crtc
= obj_to_crtc(obj
);
2446 * setplane_internal will take care of deref'ing either the old or new
2447 * framebuffer depending on success.
2449 return setplane_internal(plane
, crtc
, fb
,
2450 plane_req
->crtc_x
, plane_req
->crtc_y
,
2451 plane_req
->crtc_w
, plane_req
->crtc_h
,
2452 plane_req
->src_x
, plane_req
->src_y
,
2453 plane_req
->src_w
, plane_req
->src_h
);
2457 * drm_mode_set_config_internal - helper to call ->set_config
2458 * @set: modeset config to set
2460 * This is a little helper to wrap internal calls to the ->set_config driver
2461 * interface. The only thing it adds is correct refcounting dance.
2464 * Zero on success, negative errno on failure.
2466 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2468 struct drm_crtc
*crtc
= set
->crtc
;
2469 struct drm_framebuffer
*fb
;
2470 struct drm_crtc
*tmp
;
2474 * NOTE: ->set_config can also disable other crtcs (if we steal all
2475 * connectors from it), hence we need to refcount the fbs across all
2476 * crtcs. Atomic modeset will have saner semantics ...
2478 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
)
2479 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2483 ret
= crtc
->funcs
->set_config(set
);
2485 crtc
->primary
->crtc
= crtc
;
2486 crtc
->primary
->fb
= fb
;
2489 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
2490 if (tmp
->primary
->fb
)
2491 drm_framebuffer_reference(tmp
->primary
->fb
);
2492 if (tmp
->primary
->old_fb
)
2493 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2494 tmp
->primary
->old_fb
= NULL
;
2499 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2502 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2504 * @crtc: CRTC that framebuffer will be displayed on
2507 * @mode: mode that framebuffer will be displayed under
2508 * @fb: framebuffer to check size of
2510 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2512 const struct drm_display_mode
*mode
,
2513 const struct drm_framebuffer
*fb
)
2516 int hdisplay
, vdisplay
;
2518 hdisplay
= mode
->hdisplay
;
2519 vdisplay
= mode
->vdisplay
;
2521 if (drm_mode_is_stereo(mode
)) {
2522 struct drm_display_mode adjusted
= *mode
;
2524 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE
);
2525 hdisplay
= adjusted
.crtc_hdisplay
;
2526 vdisplay
= adjusted
.crtc_vdisplay
;
2529 if (crtc
->invert_dimensions
)
2530 swap(hdisplay
, vdisplay
);
2532 if (hdisplay
> fb
->width
||
2533 vdisplay
> fb
->height
||
2534 x
> fb
->width
- hdisplay
||
2535 y
> fb
->height
- vdisplay
) {
2536 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2537 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2538 crtc
->invert_dimensions
? " (inverted)" : "");
2544 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2547 * drm_mode_setcrtc - set CRTC configuration
2548 * @dev: drm device for the ioctl
2549 * @data: data pointer for the ioctl
2550 * @file_priv: drm file for the ioctl call
2552 * Build a new CRTC configuration based on user request.
2554 * Called by the user via ioctl.
2557 * Zero on success, negative errno on failure.
2559 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2560 struct drm_file
*file_priv
)
2562 struct drm_mode_config
*config
= &dev
->mode_config
;
2563 struct drm_mode_crtc
*crtc_req
= data
;
2564 struct drm_crtc
*crtc
;
2565 struct drm_connector
**connector_set
= NULL
, *connector
;
2566 struct drm_framebuffer
*fb
= NULL
;
2567 struct drm_display_mode
*mode
= NULL
;
2568 struct drm_mode_set set
;
2569 uint32_t __user
*set_connectors_ptr
;
2573 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2576 /* For some reason crtc x/y offsets are signed internally. */
2577 if (crtc_req
->x
> INT_MAX
|| crtc_req
->y
> INT_MAX
)
2580 drm_modeset_lock_all(dev
);
2581 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2583 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2587 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2589 if (crtc_req
->mode_valid
) {
2590 /* If we have a mode we need a framebuffer. */
2591 /* If we pass -1, set the mode with the currently bound fb */
2592 if (crtc_req
->fb_id
== -1) {
2593 if (!crtc
->primary
->fb
) {
2594 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2598 fb
= crtc
->primary
->fb
;
2599 /* Make refcounting symmetric with the lookup path. */
2600 drm_framebuffer_reference(fb
);
2602 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2604 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2611 mode
= drm_mode_create(dev
);
2617 ret
= drm_crtc_convert_umode(mode
, &crtc_req
->mode
);
2619 DRM_DEBUG_KMS("Invalid mode\n");
2623 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2625 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2632 if (crtc_req
->count_connectors
== 0 && mode
) {
2633 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2638 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2639 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2640 crtc_req
->count_connectors
);
2645 if (crtc_req
->count_connectors
> 0) {
2648 /* Avoid unbounded kernel memory allocation */
2649 if (crtc_req
->count_connectors
> config
->num_connector
) {
2654 connector_set
= kmalloc(crtc_req
->count_connectors
*
2655 sizeof(struct drm_connector
*),
2657 if (!connector_set
) {
2662 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2663 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2664 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2669 connector
= drm_connector_find(dev
, out_id
);
2671 DRM_DEBUG_KMS("Connector id %d unknown\n",
2676 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2680 connector_set
[i
] = connector
;
2685 set
.x
= crtc_req
->x
;
2686 set
.y
= crtc_req
->y
;
2688 set
.connectors
= connector_set
;
2689 set
.num_connectors
= crtc_req
->count_connectors
;
2691 ret
= drm_mode_set_config_internal(&set
);
2695 drm_framebuffer_unreference(fb
);
2697 kfree(connector_set
);
2698 drm_mode_destroy(dev
, mode
);
2699 drm_modeset_unlock_all(dev
);
2704 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2705 * universal plane handler call
2706 * @crtc: crtc to update cursor for
2707 * @req: data pointer for the ioctl
2708 * @file_priv: drm file for the ioctl call
2710 * Legacy cursor ioctl's work directly with driver buffer handles. To
2711 * translate legacy ioctl calls into universal plane handler calls, we need to
2712 * wrap the native buffer handle in a drm_framebuffer.
2714 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2715 * buffer with a pitch of 4*width; the universal plane interface should be used
2716 * directly in cases where the hardware can support other buffer settings and
2717 * userspace wants to make use of these capabilities.
2720 * Zero on success, negative errno on failure.
2722 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2723 struct drm_mode_cursor2
*req
,
2724 struct drm_file
*file_priv
)
2726 struct drm_device
*dev
= crtc
->dev
;
2727 struct drm_framebuffer
*fb
= NULL
;
2728 struct drm_mode_fb_cmd2 fbreq
= {
2729 .width
= req
->width
,
2730 .height
= req
->height
,
2731 .pixel_format
= DRM_FORMAT_ARGB8888
,
2732 .pitches
= { req
->width
* 4 },
2733 .handles
= { req
->handle
},
2735 int32_t crtc_x
, crtc_y
;
2736 uint32_t crtc_w
= 0, crtc_h
= 0;
2737 uint32_t src_w
= 0, src_h
= 0;
2740 BUG_ON(!crtc
->cursor
);
2741 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2744 * Obtain fb we'll be using (either new or existing) and take an extra
2745 * reference to it if fb != null. setplane will take care of dropping
2746 * the reference if the plane update fails.
2748 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2750 fb
= add_framebuffer_internal(dev
, &fbreq
, file_priv
);
2752 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2756 drm_framebuffer_reference(fb
);
2761 fb
= crtc
->cursor
->fb
;
2763 drm_framebuffer_reference(fb
);
2766 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2770 crtc_x
= crtc
->cursor_x
;
2771 crtc_y
= crtc
->cursor_y
;
2776 crtc_h
= fb
->height
;
2777 src_w
= fb
->width
<< 16;
2778 src_h
= fb
->height
<< 16;
2782 * setplane_internal will take care of deref'ing either the old or new
2783 * framebuffer depending on success.
2785 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2786 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2787 0, 0, src_w
, src_h
);
2789 /* Update successful; save new cursor position, if necessary */
2790 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2791 crtc
->cursor_x
= req
->x
;
2792 crtc
->cursor_y
= req
->y
;
2798 static int drm_mode_cursor_common(struct drm_device
*dev
,
2799 struct drm_mode_cursor2
*req
,
2800 struct drm_file
*file_priv
)
2802 struct drm_crtc
*crtc
;
2805 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2808 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2811 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2813 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2818 * If this crtc has a universal cursor plane, call that plane's update
2819 * handler rather than using legacy cursor handlers.
2821 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
2823 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2827 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2828 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2832 /* Turns off the cursor if handle is 0 */
2833 if (crtc
->funcs
->cursor_set2
)
2834 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2835 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2837 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2838 req
->width
, req
->height
);
2841 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2842 if (crtc
->funcs
->cursor_move
) {
2843 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
2850 drm_modeset_unlock_crtc(crtc
);
2858 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2859 * @dev: drm device for the ioctl
2860 * @data: data pointer for the ioctl
2861 * @file_priv: drm file for the ioctl call
2863 * Set the cursor configuration based on user request.
2865 * Called by the user via ioctl.
2868 * Zero on success, negative errno on failure.
2870 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
2871 void *data
, struct drm_file
*file_priv
)
2873 struct drm_mode_cursor
*req
= data
;
2874 struct drm_mode_cursor2 new_req
;
2876 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
2877 new_req
.hot_x
= new_req
.hot_y
= 0;
2879 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
2883 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2884 * @dev: drm device for the ioctl
2885 * @data: data pointer for the ioctl
2886 * @file_priv: drm file for the ioctl call
2888 * Set the cursor configuration based on user request. This implements the 2nd
2889 * version of the cursor ioctl, which allows userspace to additionally specify
2890 * the hotspot of the pointer.
2892 * Called by the user via ioctl.
2895 * Zero on success, negative errno on failure.
2897 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
2898 void *data
, struct drm_file
*file_priv
)
2900 struct drm_mode_cursor2
*req
= data
;
2901 return drm_mode_cursor_common(dev
, req
, file_priv
);
2905 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2906 * @bpp: bits per pixels
2907 * @depth: bit depth per pixel
2909 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2910 * Useful in fbdev emulation code, since that deals in those values.
2912 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
2918 fmt
= DRM_FORMAT_C8
;
2922 fmt
= DRM_FORMAT_XRGB1555
;
2924 fmt
= DRM_FORMAT_RGB565
;
2927 fmt
= DRM_FORMAT_RGB888
;
2931 fmt
= DRM_FORMAT_XRGB8888
;
2932 else if (depth
== 30)
2933 fmt
= DRM_FORMAT_XRGB2101010
;
2935 fmt
= DRM_FORMAT_ARGB8888
;
2938 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2939 fmt
= DRM_FORMAT_XRGB8888
;
2945 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
2948 * drm_mode_addfb - add an FB to the graphics configuration
2949 * @dev: drm device for the ioctl
2950 * @data: data pointer for the ioctl
2951 * @file_priv: drm file for the ioctl call
2953 * Add a new FB to the specified CRTC, given a user request. This is the
2954 * original addfb ioctl which only supported RGB formats.
2956 * Called by the user via ioctl.
2959 * Zero on success, negative errno on failure.
2961 int drm_mode_addfb(struct drm_device
*dev
,
2962 void *data
, struct drm_file
*file_priv
)
2964 struct drm_mode_fb_cmd
*or = data
;
2965 struct drm_mode_fb_cmd2 r
= {};
2968 /* convert to new format and call new ioctl */
2969 r
.fb_id
= or->fb_id
;
2970 r
.width
= or->width
;
2971 r
.height
= or->height
;
2972 r
.pitches
[0] = or->pitch
;
2973 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
2974 r
.handles
[0] = or->handle
;
2976 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
2980 or->fb_id
= r
.fb_id
;
2985 static int format_check(const struct drm_mode_fb_cmd2
*r
)
2987 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
2991 case DRM_FORMAT_RGB332
:
2992 case DRM_FORMAT_BGR233
:
2993 case DRM_FORMAT_XRGB4444
:
2994 case DRM_FORMAT_XBGR4444
:
2995 case DRM_FORMAT_RGBX4444
:
2996 case DRM_FORMAT_BGRX4444
:
2997 case DRM_FORMAT_ARGB4444
:
2998 case DRM_FORMAT_ABGR4444
:
2999 case DRM_FORMAT_RGBA4444
:
3000 case DRM_FORMAT_BGRA4444
:
3001 case DRM_FORMAT_XRGB1555
:
3002 case DRM_FORMAT_XBGR1555
:
3003 case DRM_FORMAT_RGBX5551
:
3004 case DRM_FORMAT_BGRX5551
:
3005 case DRM_FORMAT_ARGB1555
:
3006 case DRM_FORMAT_ABGR1555
:
3007 case DRM_FORMAT_RGBA5551
:
3008 case DRM_FORMAT_BGRA5551
:
3009 case DRM_FORMAT_RGB565
:
3010 case DRM_FORMAT_BGR565
:
3011 case DRM_FORMAT_RGB888
:
3012 case DRM_FORMAT_BGR888
:
3013 case DRM_FORMAT_XRGB8888
:
3014 case DRM_FORMAT_XBGR8888
:
3015 case DRM_FORMAT_RGBX8888
:
3016 case DRM_FORMAT_BGRX8888
:
3017 case DRM_FORMAT_ARGB8888
:
3018 case DRM_FORMAT_ABGR8888
:
3019 case DRM_FORMAT_RGBA8888
:
3020 case DRM_FORMAT_BGRA8888
:
3021 case DRM_FORMAT_XRGB2101010
:
3022 case DRM_FORMAT_XBGR2101010
:
3023 case DRM_FORMAT_RGBX1010102
:
3024 case DRM_FORMAT_BGRX1010102
:
3025 case DRM_FORMAT_ARGB2101010
:
3026 case DRM_FORMAT_ABGR2101010
:
3027 case DRM_FORMAT_RGBA1010102
:
3028 case DRM_FORMAT_BGRA1010102
:
3029 case DRM_FORMAT_YUYV
:
3030 case DRM_FORMAT_YVYU
:
3031 case DRM_FORMAT_UYVY
:
3032 case DRM_FORMAT_VYUY
:
3033 case DRM_FORMAT_AYUV
:
3034 case DRM_FORMAT_NV12
:
3035 case DRM_FORMAT_NV21
:
3036 case DRM_FORMAT_NV16
:
3037 case DRM_FORMAT_NV61
:
3038 case DRM_FORMAT_NV24
:
3039 case DRM_FORMAT_NV42
:
3040 case DRM_FORMAT_YUV410
:
3041 case DRM_FORMAT_YVU410
:
3042 case DRM_FORMAT_YUV411
:
3043 case DRM_FORMAT_YVU411
:
3044 case DRM_FORMAT_YUV420
:
3045 case DRM_FORMAT_YVU420
:
3046 case DRM_FORMAT_YUV422
:
3047 case DRM_FORMAT_YVU422
:
3048 case DRM_FORMAT_YUV444
:
3049 case DRM_FORMAT_YVU444
:
3052 DRM_DEBUG_KMS("invalid pixel format %s\n",
3053 drm_get_format_name(r
->pixel_format
));
3058 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3060 int ret
, hsub
, vsub
, num_planes
, i
;
3062 ret
= format_check(r
);
3064 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3065 drm_get_format_name(r
->pixel_format
));
3069 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3070 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3071 num_planes
= drm_format_num_planes(r
->pixel_format
);
3073 if (r
->width
== 0 || r
->width
% hsub
) {
3074 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3078 if (r
->height
== 0 || r
->height
% vsub
) {
3079 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3083 for (i
= 0; i
< num_planes
; i
++) {
3084 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3085 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3086 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3088 if (!r
->handles
[i
]) {
3089 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3093 if ((uint64_t) width
* cpp
> UINT_MAX
)
3096 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3099 if (r
->pitches
[i
] < width
* cpp
) {
3100 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3108 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
3109 struct drm_mode_fb_cmd2
*r
,
3110 struct drm_file
*file_priv
)
3112 struct drm_mode_config
*config
= &dev
->mode_config
;
3113 struct drm_framebuffer
*fb
;
3116 if (r
->flags
& ~DRM_MODE_FB_INTERLACED
) {
3117 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3118 return ERR_PTR(-EINVAL
);
3121 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3122 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3123 r
->width
, config
->min_width
, config
->max_width
);
3124 return ERR_PTR(-EINVAL
);
3126 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3127 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3128 r
->height
, config
->min_height
, config
->max_height
);
3129 return ERR_PTR(-EINVAL
);
3132 ret
= framebuffer_check(r
);
3134 return ERR_PTR(ret
);
3136 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3138 DRM_DEBUG_KMS("could not create framebuffer\n");
3142 mutex_lock(&file_priv
->fbs_lock
);
3143 r
->fb_id
= fb
->base
.id
;
3144 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3145 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3146 mutex_unlock(&file_priv
->fbs_lock
);
3152 * drm_mode_addfb2 - add an FB to the graphics configuration
3153 * @dev: drm device for the ioctl
3154 * @data: data pointer for the ioctl
3155 * @file_priv: drm file for the ioctl call
3157 * Add a new FB to the specified CRTC, given a user request with format. This is
3158 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3159 * and uses fourcc codes as pixel format specifiers.
3161 * Called by the user via ioctl.
3164 * Zero on success, negative errno on failure.
3166 int drm_mode_addfb2(struct drm_device
*dev
,
3167 void *data
, struct drm_file
*file_priv
)
3169 struct drm_framebuffer
*fb
;
3171 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3174 fb
= add_framebuffer_internal(dev
, data
, file_priv
);
3182 * drm_mode_rmfb - remove an FB from the configuration
3183 * @dev: drm device for the ioctl
3184 * @data: data pointer for the ioctl
3185 * @file_priv: drm file for the ioctl call
3187 * Remove the FB specified by the user.
3189 * Called by the user via ioctl.
3192 * Zero on success, negative errno on failure.
3194 int drm_mode_rmfb(struct drm_device
*dev
,
3195 void *data
, struct drm_file
*file_priv
)
3197 struct drm_framebuffer
*fb
= NULL
;
3198 struct drm_framebuffer
*fbl
= NULL
;
3199 uint32_t *id
= data
;
3202 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3205 mutex_lock(&file_priv
->fbs_lock
);
3206 mutex_lock(&dev
->mode_config
.fb_lock
);
3207 fb
= __drm_framebuffer_lookup(dev
, *id
);
3211 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3217 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3218 __drm_framebuffer_unregister(dev
, fb
);
3220 list_del_init(&fb
->filp_head
);
3221 mutex_unlock(&dev
->mode_config
.fb_lock
);
3222 mutex_unlock(&file_priv
->fbs_lock
);
3224 drm_framebuffer_remove(fb
);
3229 mutex_unlock(&dev
->mode_config
.fb_lock
);
3230 mutex_unlock(&file_priv
->fbs_lock
);
3236 * drm_mode_getfb - get FB info
3237 * @dev: drm device for the ioctl
3238 * @data: data pointer for the ioctl
3239 * @file_priv: drm file for the ioctl call
3241 * Lookup the FB given its ID and return info about it.
3243 * Called by the user via ioctl.
3246 * Zero on success, negative errno on failure.
3248 int drm_mode_getfb(struct drm_device
*dev
,
3249 void *data
, struct drm_file
*file_priv
)
3251 struct drm_mode_fb_cmd
*r
= data
;
3252 struct drm_framebuffer
*fb
;
3255 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3258 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3262 r
->height
= fb
->height
;
3263 r
->width
= fb
->width
;
3264 r
->depth
= fb
->depth
;
3265 r
->bpp
= fb
->bits_per_pixel
;
3266 r
->pitch
= fb
->pitches
[0];
3267 if (fb
->funcs
->create_handle
) {
3268 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3269 drm_is_control_client(file_priv
)) {
3270 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3273 /* GET_FB() is an unprivileged ioctl so we must not
3274 * return a buffer-handle to non-master processes! For
3275 * backwards-compatibility reasons, we cannot make
3276 * GET_FB() privileged, so just return an invalid handle
3277 * for non-masters. */
3285 drm_framebuffer_unreference(fb
);
3291 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3292 * @dev: drm device for the ioctl
3293 * @data: data pointer for the ioctl
3294 * @file_priv: drm file for the ioctl call
3296 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3297 * rectangle list. Generic userspace which does frontbuffer rendering must call
3298 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3299 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3301 * Modesetting drivers which always update the frontbuffer do not need to
3302 * implement the corresponding ->dirty framebuffer callback.
3304 * Called by the user via ioctl.
3307 * Zero on success, negative errno on failure.
3309 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3310 void *data
, struct drm_file
*file_priv
)
3312 struct drm_clip_rect __user
*clips_ptr
;
3313 struct drm_clip_rect
*clips
= NULL
;
3314 struct drm_mode_fb_dirty_cmd
*r
= data
;
3315 struct drm_framebuffer
*fb
;
3320 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3323 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3327 num_clips
= r
->num_clips
;
3328 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3330 if (!num_clips
!= !clips_ptr
) {
3335 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3337 /* If userspace annotates copy, clips must come in pairs */
3338 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3343 if (num_clips
&& clips_ptr
) {
3344 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3348 clips
= kzalloc(num_clips
* sizeof(*clips
), GFP_KERNEL
);
3354 ret
= copy_from_user(clips
, clips_ptr
,
3355 num_clips
* sizeof(*clips
));
3362 if (fb
->funcs
->dirty
) {
3363 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3372 drm_framebuffer_unreference(fb
);
3379 * drm_fb_release - remove and free the FBs on this file
3380 * @priv: drm file for the ioctl
3382 * Destroy all the FBs associated with @filp.
3384 * Called by the user via ioctl.
3387 * Zero on success, negative errno on failure.
3389 void drm_fb_release(struct drm_file
*priv
)
3391 struct drm_device
*dev
= priv
->minor
->dev
;
3392 struct drm_framebuffer
*fb
, *tfb
;
3395 * When the file gets released that means no one else can access the fb
3396 * list any more, so no need to grab fpriv->fbs_lock. And we need to to
3397 * avoid upsetting lockdep since the universal cursor code adds a
3398 * framebuffer while holding mutex locks.
3400 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3401 * locks is impossible here since no one else but this function can get
3404 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3406 mutex_lock(&dev
->mode_config
.fb_lock
);
3407 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3408 __drm_framebuffer_unregister(dev
, fb
);
3409 mutex_unlock(&dev
->mode_config
.fb_lock
);
3411 list_del_init(&fb
->filp_head
);
3413 /* This will also drop the fpriv->fbs reference. */
3414 drm_framebuffer_remove(fb
);
3419 * drm_property_create - create a new property type
3421 * @flags: flags specifying the property type
3422 * @name: name of the property
3423 * @num_values: number of pre-defined values
3425 * This creates a new generic drm property which can then be attached to a drm
3426 * object with drm_object_attach_property. The returned property object must be
3427 * freed with drm_property_destroy.
3429 * Note that the DRM core keeps a per-device list of properties and that, if
3430 * drm_mode_config_cleanup() is called, it will destroy all properties created
3434 * A pointer to the newly created property on success, NULL on failure.
3436 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3437 const char *name
, int num_values
)
3439 struct drm_property
*property
= NULL
;
3442 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3446 property
->dev
= dev
;
3449 property
->values
= kzalloc(sizeof(uint64_t)*num_values
, GFP_KERNEL
);
3450 if (!property
->values
)
3454 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3458 property
->flags
= flags
;
3459 property
->num_values
= num_values
;
3460 INIT_LIST_HEAD(&property
->enum_list
);
3463 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3464 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3467 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3469 WARN_ON(!drm_property_type_valid(property
));
3473 kfree(property
->values
);
3477 EXPORT_SYMBOL(drm_property_create
);
3480 * drm_property_create_enum - create a new enumeration property type
3482 * @flags: flags specifying the property type
3483 * @name: name of the property
3484 * @props: enumeration lists with property values
3485 * @num_values: number of pre-defined values
3487 * This creates a new generic drm property which can then be attached to a drm
3488 * object with drm_object_attach_property. The returned property object must be
3489 * freed with drm_property_destroy.
3491 * Userspace is only allowed to set one of the predefined values for enumeration
3495 * A pointer to the newly created property on success, NULL on failure.
3497 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3499 const struct drm_prop_enum_list
*props
,
3502 struct drm_property
*property
;
3505 flags
|= DRM_MODE_PROP_ENUM
;
3507 property
= drm_property_create(dev
, flags
, name
, num_values
);
3511 for (i
= 0; i
< num_values
; i
++) {
3512 ret
= drm_property_add_enum(property
, i
,
3516 drm_property_destroy(dev
, property
);
3523 EXPORT_SYMBOL(drm_property_create_enum
);
3526 * drm_property_create_bitmask - create a new bitmask property type
3528 * @flags: flags specifying the property type
3529 * @name: name of the property
3530 * @props: enumeration lists with property bitflags
3531 * @num_props: size of the @props array
3532 * @supported_bits: bitmask of all supported enumeration values
3534 * This creates a new bitmask drm property which can then be attached to a drm
3535 * object with drm_object_attach_property. The returned property object must be
3536 * freed with drm_property_destroy.
3538 * Compared to plain enumeration properties userspace is allowed to set any
3539 * or'ed together combination of the predefined property bitflag values
3542 * A pointer to the newly created property on success, NULL on failure.
3544 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3545 int flags
, const char *name
,
3546 const struct drm_prop_enum_list
*props
,
3548 uint64_t supported_bits
)
3550 struct drm_property
*property
;
3551 int i
, ret
, index
= 0;
3552 int num_values
= hweight64(supported_bits
);
3554 flags
|= DRM_MODE_PROP_BITMASK
;
3556 property
= drm_property_create(dev
, flags
, name
, num_values
);
3559 for (i
= 0; i
< num_props
; i
++) {
3560 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3563 if (WARN_ON(index
>= num_values
)) {
3564 drm_property_destroy(dev
, property
);
3568 ret
= drm_property_add_enum(property
, index
++,
3572 drm_property_destroy(dev
, property
);
3579 EXPORT_SYMBOL(drm_property_create_bitmask
);
3581 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3582 int flags
, const char *name
,
3583 uint64_t min
, uint64_t max
)
3585 struct drm_property
*property
;
3587 property
= drm_property_create(dev
, flags
, name
, 2);
3591 property
->values
[0] = min
;
3592 property
->values
[1] = max
;
3598 * drm_property_create_range - create a new ranged property type
3600 * @flags: flags specifying the property type
3601 * @name: name of the property
3602 * @min: minimum value of the property
3603 * @max: maximum value of the property
3605 * This creates a new generic drm property which can then be attached to a drm
3606 * object with drm_object_attach_property. The returned property object must be
3607 * freed with drm_property_destroy.
3609 * Userspace is allowed to set any integer value in the (min, max) range
3613 * A pointer to the newly created property on success, NULL on failure.
3615 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3617 uint64_t min
, uint64_t max
)
3619 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3622 EXPORT_SYMBOL(drm_property_create_range
);
3624 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3625 int flags
, const char *name
,
3626 int64_t min
, int64_t max
)
3628 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3629 name
, I642U64(min
), I642U64(max
));
3631 EXPORT_SYMBOL(drm_property_create_signed_range
);
3633 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3634 int flags
, const char *name
, uint32_t type
)
3636 struct drm_property
*property
;
3638 flags
|= DRM_MODE_PROP_OBJECT
;
3640 property
= drm_property_create(dev
, flags
, name
, 1);
3644 property
->values
[0] = type
;
3648 EXPORT_SYMBOL(drm_property_create_object
);
3651 * drm_property_add_enum - add a possible value to an enumeration property
3652 * @property: enumeration property to change
3653 * @index: index of the new enumeration
3654 * @value: value of the new enumeration
3655 * @name: symbolic name of the new enumeration
3657 * This functions adds enumerations to a property.
3659 * It's use is deprecated, drivers should use one of the more specific helpers
3660 * to directly create the property with all enumerations already attached.
3663 * Zero on success, error code on failure.
3665 int drm_property_add_enum(struct drm_property
*property
, int index
,
3666 uint64_t value
, const char *name
)
3668 struct drm_property_enum
*prop_enum
;
3670 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3671 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3675 * Bitmask enum properties have the additional constraint of values
3678 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3682 if (!list_empty(&property
->enum_list
)) {
3683 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3684 if (prop_enum
->value
== value
) {
3685 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3686 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3692 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3696 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3697 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3698 prop_enum
->value
= value
;
3700 property
->values
[index
] = value
;
3701 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
3704 EXPORT_SYMBOL(drm_property_add_enum
);
3707 * drm_property_destroy - destroy a drm property
3709 * @property: property to destry
3711 * This function frees a property including any attached resources like
3712 * enumeration values.
3714 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3716 struct drm_property_enum
*prop_enum
, *pt
;
3718 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
3719 list_del(&prop_enum
->head
);
3723 if (property
->num_values
)
3724 kfree(property
->values
);
3725 drm_mode_object_put(dev
, &property
->base
);
3726 list_del(&property
->head
);
3729 EXPORT_SYMBOL(drm_property_destroy
);
3732 * drm_object_attach_property - attach a property to a modeset object
3733 * @obj: drm modeset object
3734 * @property: property to attach
3735 * @init_val: initial value of the property
3737 * This attaches the given property to the modeset object with the given initial
3738 * value. Currently this function cannot fail since the properties are stored in
3739 * a statically sized array.
3741 void drm_object_attach_property(struct drm_mode_object
*obj
,
3742 struct drm_property
*property
,
3745 int count
= obj
->properties
->count
;
3747 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3748 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3749 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3750 "you see this message on the same object type.\n",
3755 obj
->properties
->ids
[count
] = property
->base
.id
;
3756 obj
->properties
->values
[count
] = init_val
;
3757 obj
->properties
->count
++;
3759 EXPORT_SYMBOL(drm_object_attach_property
);
3762 * drm_object_property_set_value - set the value of a property
3763 * @obj: drm mode object to set property value for
3764 * @property: property to set
3765 * @val: value the property should be set to
3767 * This functions sets a given property on a given object. This function only
3768 * changes the software state of the property, it does not call into the
3769 * driver's ->set_property callback.
3772 * Zero on success, error code on failure.
3774 int drm_object_property_set_value(struct drm_mode_object
*obj
,
3775 struct drm_property
*property
, uint64_t val
)
3779 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3780 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3781 obj
->properties
->values
[i
] = val
;
3788 EXPORT_SYMBOL(drm_object_property_set_value
);
3791 * drm_object_property_get_value - retrieve the value of a property
3792 * @obj: drm mode object to get property value from
3793 * @property: property to retrieve
3794 * @val: storage for the property value
3796 * This function retrieves the softare state of the given property for the given
3797 * property. Since there is no driver callback to retrieve the current property
3798 * value this might be out of sync with the hardware, depending upon the driver
3802 * Zero on success, error code on failure.
3804 int drm_object_property_get_value(struct drm_mode_object
*obj
,
3805 struct drm_property
*property
, uint64_t *val
)
3809 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3810 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3811 *val
= obj
->properties
->values
[i
];
3818 EXPORT_SYMBOL(drm_object_property_get_value
);
3821 * drm_mode_getproperty_ioctl - get the property metadata
3824 * @file_priv: DRM file info
3826 * This function retrieves the metadata for a given property, like the different
3827 * possible values for an enum property or the limits for a range property.
3829 * Blob properties are special
3831 * Called by the user via ioctl.
3834 * Zero on success, negative errno on failure.
3836 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
3837 void *data
, struct drm_file
*file_priv
)
3839 struct drm_mode_get_property
*out_resp
= data
;
3840 struct drm_property
*property
;
3842 int value_count
= 0;
3845 struct drm_property_enum
*prop_enum
;
3846 struct drm_mode_property_enum __user
*enum_ptr
;
3847 uint64_t __user
*values_ptr
;
3849 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3852 drm_modeset_lock_all(dev
);
3853 property
= drm_property_find(dev
, out_resp
->prop_id
);
3859 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3860 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3861 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
3865 value_count
= property
->num_values
;
3867 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
3868 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
3869 out_resp
->flags
= property
->flags
;
3871 if ((out_resp
->count_values
>= value_count
) && value_count
) {
3872 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
3873 for (i
= 0; i
< value_count
; i
++) {
3874 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
3880 out_resp
->count_values
= value_count
;
3882 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3883 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3884 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
3886 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
3887 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3889 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
3894 if (copy_to_user(&enum_ptr
[copied
].name
,
3895 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
3902 out_resp
->count_enum_blobs
= enum_count
;
3906 * NOTE: The idea seems to have been to use this to read all the blob
3907 * property values. But nothing ever added them to the corresponding
3908 * list, userspace always used the special-purpose get_blob ioctl to
3909 * read the value for a blob property. It also doesn't make a lot of
3910 * sense to return values here when everything else is just metadata for
3911 * the property itself.
3913 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
3914 out_resp
->count_enum_blobs
= 0;
3916 drm_modeset_unlock_all(dev
);
3920 static struct drm_property_blob
*
3921 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
3924 struct drm_property_blob
*blob
;
3927 if (!length
|| !data
)
3930 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
3934 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
3940 blob
->length
= length
;
3942 memcpy(blob
->data
, data
, length
);
3944 list_add_tail(&blob
->head
, &dev
->mode_config
.property_blob_list
);
3948 static void drm_property_destroy_blob(struct drm_device
*dev
,
3949 struct drm_property_blob
*blob
)
3951 drm_mode_object_put(dev
, &blob
->base
);
3952 list_del(&blob
->head
);
3957 * drm_mode_getblob_ioctl - get the contents of a blob property value
3960 * @file_priv: DRM file info
3962 * This function retrieves the contents of a blob property. The value stored in
3963 * an object's blob property is just a normal modeset object id.
3965 * Called by the user via ioctl.
3968 * Zero on success, negative errno on failure.
3970 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
3971 void *data
, struct drm_file
*file_priv
)
3973 struct drm_mode_get_blob
*out_resp
= data
;
3974 struct drm_property_blob
*blob
;
3976 void __user
*blob_ptr
;
3978 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3981 drm_modeset_lock_all(dev
);
3982 blob
= drm_property_blob_find(dev
, out_resp
->blob_id
);
3988 if (out_resp
->length
== blob
->length
) {
3989 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
3990 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)){
3995 out_resp
->length
= blob
->length
;
3998 drm_modeset_unlock_all(dev
);
4003 * drm_mode_connector_set_path_property - set tile property on connector
4004 * @connector: connector to set property on.
4005 * @path: path to use for property.
4007 * This creates a property to expose to userspace to specify a
4008 * connector path. This is mainly used for DisplayPort MST where
4009 * connectors have a topology and we want to allow userspace to give
4010 * them more meaningful names.
4013 * Zero on success, negative errno on failure.
4015 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4018 struct drm_device
*dev
= connector
->dev
;
4019 size_t size
= strlen(path
) + 1;
4022 connector
->path_blob_ptr
= drm_property_create_blob(connector
->dev
,
4024 if (!connector
->path_blob_ptr
)
4027 ret
= drm_object_property_set_value(&connector
->base
,
4028 dev
->mode_config
.path_property
,
4029 connector
->path_blob_ptr
->base
.id
);
4032 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4035 * drm_mode_connector_update_edid_property - update the edid property of a connector
4036 * @connector: drm connector
4037 * @edid: new value of the edid property
4039 * This function creates a new blob modeset object and assigns its id to the
4040 * connector's edid property.
4043 * Zero on success, negative errno on failure.
4045 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4046 const struct edid
*edid
)
4048 struct drm_device
*dev
= connector
->dev
;
4052 /* ignore requests to set edid when overridden */
4053 if (connector
->override_edid
)
4056 if (connector
->edid_blob_ptr
)
4057 drm_property_destroy_blob(dev
, connector
->edid_blob_ptr
);
4059 /* Delete edid, when there is none. */
4061 connector
->edid_blob_ptr
= NULL
;
4062 ret
= drm_object_property_set_value(&connector
->base
, dev
->mode_config
.edid_property
, 0);
4066 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4067 connector
->edid_blob_ptr
= drm_property_create_blob(connector
->dev
,
4069 if (!connector
->edid_blob_ptr
)
4072 ret
= drm_object_property_set_value(&connector
->base
,
4073 dev
->mode_config
.edid_property
,
4074 connector
->edid_blob_ptr
->base
.id
);
4078 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4080 static bool drm_property_change_is_valid(struct drm_property
*property
,
4083 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4086 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4087 if (value
< property
->values
[0] || value
> property
->values
[1])
4090 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4091 int64_t svalue
= U642I64(value
);
4092 if (svalue
< U642I64(property
->values
[0]) ||
4093 svalue
> U642I64(property
->values
[1]))
4096 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4098 uint64_t valid_mask
= 0;
4099 for (i
= 0; i
< property
->num_values
; i
++)
4100 valid_mask
|= (1ULL << property
->values
[i
]);
4101 return !(value
& ~valid_mask
);
4102 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4103 /* Only the driver knows */
4105 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4106 struct drm_mode_object
*obj
;
4107 /* a zero value for an object property translates to null: */
4111 * NOTE: use _object_find() directly to bypass restriction on
4112 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4113 * object this could race against object finalization, so it
4114 * simply tells us that the object *was* valid. Which is good
4117 obj
= _object_find(property
->dev
, value
, property
->values
[0]);
4121 for (i
= 0; i
< property
->num_values
; i
++)
4122 if (property
->values
[i
] == value
)
4129 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4132 * @file_priv: DRM file info
4134 * This function sets the current value for a connectors's property. It also
4135 * calls into a driver's ->set_property callback to update the hardware state
4137 * Called by the user via ioctl.
4140 * Zero on success, negative errno on failure.
4142 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4143 void *data
, struct drm_file
*file_priv
)
4145 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4146 struct drm_mode_obj_set_property obj_set_prop
= {
4147 .value
= conn_set_prop
->value
,
4148 .prop_id
= conn_set_prop
->prop_id
,
4149 .obj_id
= conn_set_prop
->connector_id
,
4150 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4153 /* It does all the locking and checking we need */
4154 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4157 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4158 struct drm_property
*property
,
4162 struct drm_connector
*connector
= obj_to_connector(obj
);
4164 /* Do DPMS ourselves */
4165 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4166 if (connector
->funcs
->dpms
)
4167 (*connector
->funcs
->dpms
)(connector
, (int)value
);
4169 } else if (connector
->funcs
->set_property
)
4170 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4172 /* store the property value if successful */
4174 drm_object_property_set_value(&connector
->base
, property
, value
);
4178 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4179 struct drm_property
*property
,
4183 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4185 if (crtc
->funcs
->set_property
)
4186 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4188 drm_object_property_set_value(obj
, property
, value
);
4194 * drm_mode_plane_set_obj_prop - set the value of a property
4195 * @plane: drm plane object to set property value for
4196 * @property: property to set
4197 * @value: value the property should be set to
4199 * This functions sets a given property on a given plane object. This function
4200 * calls the driver's ->set_property callback and changes the software state of
4201 * the property if the callback succeeds.
4204 * Zero on success, error code on failure.
4206 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4207 struct drm_property
*property
,
4211 struct drm_mode_object
*obj
= &plane
->base
;
4213 if (plane
->funcs
->set_property
)
4214 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4216 drm_object_property_set_value(obj
, property
, value
);
4220 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4223 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4226 * @file_priv: DRM file info
4228 * This function retrieves the current value for an object's property. Compared
4229 * to the connector specific ioctl this one is extended to also work on crtc and
4232 * Called by the user via ioctl.
4235 * Zero on success, negative errno on failure.
4237 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4238 struct drm_file
*file_priv
)
4240 struct drm_mode_obj_get_properties
*arg
= data
;
4241 struct drm_mode_object
*obj
;
4245 int props_count
= 0;
4246 uint32_t __user
*props_ptr
;
4247 uint64_t __user
*prop_values_ptr
;
4249 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4252 drm_modeset_lock_all(dev
);
4254 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4259 if (!obj
->properties
) {
4264 props_count
= obj
->properties
->count
;
4266 /* This ioctl is called twice, once to determine how much space is
4267 * needed, and the 2nd time to fill it. */
4268 if ((arg
->count_props
>= props_count
) && props_count
) {
4270 props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->props_ptr
);
4271 prop_values_ptr
= (uint64_t __user
*)(unsigned long)
4272 (arg
->prop_values_ptr
);
4273 for (i
= 0; i
< props_count
; i
++) {
4274 if (put_user(obj
->properties
->ids
[i
],
4275 props_ptr
+ copied
)) {
4279 if (put_user(obj
->properties
->values
[i
],
4280 prop_values_ptr
+ copied
)) {
4287 arg
->count_props
= props_count
;
4289 drm_modeset_unlock_all(dev
);
4294 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4297 * @file_priv: DRM file info
4299 * This function sets the current value for an object's property. It also calls
4300 * into a driver's ->set_property callback to update the hardware state.
4301 * Compared to the connector specific ioctl this one is extended to also work on
4302 * crtc and plane objects.
4304 * Called by the user via ioctl.
4307 * Zero on success, negative errno on failure.
4309 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4310 struct drm_file
*file_priv
)
4312 struct drm_mode_obj_set_property
*arg
= data
;
4313 struct drm_mode_object
*arg_obj
;
4314 struct drm_mode_object
*prop_obj
;
4315 struct drm_property
*property
;
4319 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4322 drm_modeset_lock_all(dev
);
4324 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4329 if (!arg_obj
->properties
)
4332 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4333 if (arg_obj
->properties
->ids
[i
] == arg
->prop_id
)
4336 if (i
== arg_obj
->properties
->count
)
4339 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
4340 DRM_MODE_OBJECT_PROPERTY
);
4345 property
= obj_to_property(prop_obj
);
4347 if (!drm_property_change_is_valid(property
, arg
->value
))
4350 switch (arg_obj
->type
) {
4351 case DRM_MODE_OBJECT_CONNECTOR
:
4352 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
4355 case DRM_MODE_OBJECT_CRTC
:
4356 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
4358 case DRM_MODE_OBJECT_PLANE
:
4359 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
4360 property
, arg
->value
);
4365 drm_modeset_unlock_all(dev
);
4370 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4371 * @connector: connector to attach
4372 * @encoder: encoder to attach @connector to
4374 * This function links up a connector to an encoder. Note that the routing
4375 * restrictions between encoders and crtcs are exposed to userspace through the
4376 * possible_clones and possible_crtcs bitmasks.
4379 * Zero on success, negative errno on failure.
4381 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
4382 struct drm_encoder
*encoder
)
4386 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
4387 if (connector
->encoder_ids
[i
] == 0) {
4388 connector
->encoder_ids
[i
] = encoder
->base
.id
;
4394 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
4397 * drm_mode_crtc_set_gamma_size - set the gamma table size
4398 * @crtc: CRTC to set the gamma table size for
4399 * @gamma_size: size of the gamma table
4401 * Drivers which support gamma tables should set this to the supported gamma
4402 * table size when initializing the CRTC. Currently the drm core only supports a
4403 * fixed gamma table size.
4406 * Zero on success, negative errno on failure.
4408 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
4411 crtc
->gamma_size
= gamma_size
;
4413 crtc
->gamma_store
= kzalloc(gamma_size
* sizeof(uint16_t) * 3, GFP_KERNEL
);
4414 if (!crtc
->gamma_store
) {
4415 crtc
->gamma_size
= 0;
4421 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
4424 * drm_mode_gamma_set_ioctl - set the gamma table
4427 * @file_priv: DRM file info
4429 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4430 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4432 * Called by the user via ioctl.
4435 * Zero on success, negative errno on failure.
4437 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
4438 void *data
, struct drm_file
*file_priv
)
4440 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4441 struct drm_crtc
*crtc
;
4442 void *r_base
, *g_base
, *b_base
;
4446 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4449 drm_modeset_lock_all(dev
);
4450 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4456 if (crtc
->funcs
->gamma_set
== NULL
) {
4461 /* memcpy into gamma store */
4462 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4467 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4468 r_base
= crtc
->gamma_store
;
4469 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
4474 g_base
= r_base
+ size
;
4475 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
4480 b_base
= g_base
+ size
;
4481 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
4486 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
4489 drm_modeset_unlock_all(dev
);
4495 * drm_mode_gamma_get_ioctl - get the gamma table
4498 * @file_priv: DRM file info
4500 * Copy the current gamma table into the storage provided. This also provides
4501 * the gamma table size the driver expects, which can be used to size the
4502 * allocated storage.
4504 * Called by the user via ioctl.
4507 * Zero on success, negative errno on failure.
4509 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
4510 void *data
, struct drm_file
*file_priv
)
4512 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4513 struct drm_crtc
*crtc
;
4514 void *r_base
, *g_base
, *b_base
;
4518 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4521 drm_modeset_lock_all(dev
);
4522 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4528 /* memcpy into gamma store */
4529 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4534 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4535 r_base
= crtc
->gamma_store
;
4536 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
4541 g_base
= r_base
+ size
;
4542 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
4547 b_base
= g_base
+ size
;
4548 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
4553 drm_modeset_unlock_all(dev
);
4558 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4561 * @file_priv: DRM file info
4563 * This schedules an asynchronous update on a given CRTC, called page flip.
4564 * Optionally a drm event is generated to signal the completion of the event.
4565 * Generic drivers cannot assume that a pageflip with changed framebuffer
4566 * properties (including driver specific metadata like tiling layout) will work,
4567 * but some drivers support e.g. pixel format changes through the pageflip
4570 * Called by the user via ioctl.
4573 * Zero on success, negative errno on failure.
4575 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
4576 void *data
, struct drm_file
*file_priv
)
4578 struct drm_mode_crtc_page_flip
*page_flip
= data
;
4579 struct drm_crtc
*crtc
;
4580 struct drm_framebuffer
*fb
= NULL
;
4581 struct drm_pending_vblank_event
*e
= NULL
;
4582 unsigned long flags
;
4585 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
4586 page_flip
->reserved
!= 0)
4589 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
4592 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
4596 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
4597 if (crtc
->primary
->fb
== NULL
) {
4598 /* The framebuffer is currently unbound, presumably
4599 * due to a hotplug event, that userspace has not
4606 if (crtc
->funcs
->page_flip
== NULL
)
4609 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
4615 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
4619 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
4620 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4625 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4627 spin_lock_irqsave(&dev
->event_lock
, flags
);
4628 if (file_priv
->event_space
< sizeof e
->event
) {
4629 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4632 file_priv
->event_space
-= sizeof e
->event
;
4633 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4635 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
4637 spin_lock_irqsave(&dev
->event_lock
, flags
);
4638 file_priv
->event_space
+= sizeof e
->event
;
4639 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4643 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
4644 e
->event
.base
.length
= sizeof e
->event
;
4645 e
->event
.user_data
= page_flip
->user_data
;
4646 e
->base
.event
= &e
->event
.base
;
4647 e
->base
.file_priv
= file_priv
;
4649 (void (*) (struct drm_pending_event
*)) kfree
;
4652 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
4653 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
4655 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4656 spin_lock_irqsave(&dev
->event_lock
, flags
);
4657 file_priv
->event_space
+= sizeof e
->event
;
4658 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4661 /* Keep the old fb, don't unref it. */
4662 crtc
->primary
->old_fb
= NULL
;
4665 * Warn if the driver hasn't properly updated the crtc->fb
4666 * field to reflect that the new framebuffer is now used.
4667 * Failing to do so will screw with the reference counting
4670 WARN_ON(crtc
->primary
->fb
!= fb
);
4671 /* Unref only the old framebuffer. */
4677 drm_framebuffer_unreference(fb
);
4678 if (crtc
->primary
->old_fb
)
4679 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
4680 crtc
->primary
->old_fb
= NULL
;
4681 drm_modeset_unlock_crtc(crtc
);
4687 * drm_mode_config_reset - call ->reset callbacks
4690 * This functions calls all the crtc's, encoder's and connector's ->reset
4691 * callback. Drivers can use this in e.g. their driver load or resume code to
4692 * reset hardware and software state.
4694 void drm_mode_config_reset(struct drm_device
*dev
)
4696 struct drm_crtc
*crtc
;
4697 struct drm_plane
*plane
;
4698 struct drm_encoder
*encoder
;
4699 struct drm_connector
*connector
;
4701 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
)
4702 if (plane
->funcs
->reset
)
4703 plane
->funcs
->reset(plane
);
4705 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
4706 if (crtc
->funcs
->reset
)
4707 crtc
->funcs
->reset(crtc
);
4709 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
4710 if (encoder
->funcs
->reset
)
4711 encoder
->funcs
->reset(encoder
);
4713 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
4714 connector
->status
= connector_status_unknown
;
4716 if (connector
->funcs
->reset
)
4717 connector
->funcs
->reset(connector
);
4720 EXPORT_SYMBOL(drm_mode_config_reset
);
4723 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4726 * @file_priv: DRM file info
4728 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4729 * TTM or something else entirely) and returns the resulting buffer handle. This
4730 * handle can then be wrapped up into a framebuffer modeset object.
4732 * Note that userspace is not allowed to use such objects for render
4733 * acceleration - drivers must create their own private ioctls for such a use
4736 * Called by the user via ioctl.
4739 * Zero on success, negative errno on failure.
4741 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
4742 void *data
, struct drm_file
*file_priv
)
4744 struct drm_mode_create_dumb
*args
= data
;
4745 u32 cpp
, stride
, size
;
4747 if (!dev
->driver
->dumb_create
)
4749 if (!args
->width
|| !args
->height
|| !args
->bpp
)
4752 /* overflow checks for 32bit size calculations */
4753 /* NOTE: DIV_ROUND_UP() can overflow */
4754 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
4755 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
4757 stride
= cpp
* args
->width
;
4758 if (args
->height
> 0xffffffffU
/ stride
)
4761 /* test for wrap-around */
4762 size
= args
->height
* stride
;
4763 if (PAGE_ALIGN(size
) == 0)
4767 * handle, pitch and size are output parameters. Zero them out to
4768 * prevent drivers from accidentally using uninitialized data. Since
4769 * not all existing userspace is clearing these fields properly we
4770 * cannot reject IOCTL with garbage in them.
4776 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
4780 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4783 * @file_priv: DRM file info
4785 * Allocate an offset in the drm device node's address space to be able to
4786 * memory map a dumb buffer.
4788 * Called by the user via ioctl.
4791 * Zero on success, negative errno on failure.
4793 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
4794 void *data
, struct drm_file
*file_priv
)
4796 struct drm_mode_map_dumb
*args
= data
;
4798 /* call driver ioctl to get mmap offset */
4799 if (!dev
->driver
->dumb_map_offset
)
4802 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
4806 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4809 * @file_priv: DRM file info
4811 * This destroys the userspace handle for the given dumb backing storage buffer.
4812 * Since buffer objects must be reference counted in the kernel a buffer object
4813 * won't be immediately freed if a framebuffer modeset object still uses it.
4815 * Called by the user via ioctl.
4818 * Zero on success, negative errno on failure.
4820 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
4821 void *data
, struct drm_file
*file_priv
)
4823 struct drm_mode_destroy_dumb
*args
= data
;
4825 if (!dev
->driver
->dumb_destroy
)
4828 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
4832 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4833 * @format: pixel format (DRM_FORMAT_*)
4834 * @depth: storage for the depth value
4835 * @bpp: storage for the bpp value
4837 * This only supports RGB formats here for compat with code that doesn't use
4838 * pixel formats directly yet.
4840 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
4845 case DRM_FORMAT_RGB332
:
4846 case DRM_FORMAT_BGR233
:
4850 case DRM_FORMAT_XRGB1555
:
4851 case DRM_FORMAT_XBGR1555
:
4852 case DRM_FORMAT_RGBX5551
:
4853 case DRM_FORMAT_BGRX5551
:
4854 case DRM_FORMAT_ARGB1555
:
4855 case DRM_FORMAT_ABGR1555
:
4856 case DRM_FORMAT_RGBA5551
:
4857 case DRM_FORMAT_BGRA5551
:
4861 case DRM_FORMAT_RGB565
:
4862 case DRM_FORMAT_BGR565
:
4866 case DRM_FORMAT_RGB888
:
4867 case DRM_FORMAT_BGR888
:
4871 case DRM_FORMAT_XRGB8888
:
4872 case DRM_FORMAT_XBGR8888
:
4873 case DRM_FORMAT_RGBX8888
:
4874 case DRM_FORMAT_BGRX8888
:
4878 case DRM_FORMAT_XRGB2101010
:
4879 case DRM_FORMAT_XBGR2101010
:
4880 case DRM_FORMAT_RGBX1010102
:
4881 case DRM_FORMAT_BGRX1010102
:
4882 case DRM_FORMAT_ARGB2101010
:
4883 case DRM_FORMAT_ABGR2101010
:
4884 case DRM_FORMAT_RGBA1010102
:
4885 case DRM_FORMAT_BGRA1010102
:
4889 case DRM_FORMAT_ARGB8888
:
4890 case DRM_FORMAT_ABGR8888
:
4891 case DRM_FORMAT_RGBA8888
:
4892 case DRM_FORMAT_BGRA8888
:
4897 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4898 drm_get_format_name(format
));
4904 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
4907 * drm_format_num_planes - get the number of planes for format
4908 * @format: pixel format (DRM_FORMAT_*)
4911 * The number of planes used by the specified pixel format.
4913 int drm_format_num_planes(uint32_t format
)
4916 case DRM_FORMAT_YUV410
:
4917 case DRM_FORMAT_YVU410
:
4918 case DRM_FORMAT_YUV411
:
4919 case DRM_FORMAT_YVU411
:
4920 case DRM_FORMAT_YUV420
:
4921 case DRM_FORMAT_YVU420
:
4922 case DRM_FORMAT_YUV422
:
4923 case DRM_FORMAT_YVU422
:
4924 case DRM_FORMAT_YUV444
:
4925 case DRM_FORMAT_YVU444
:
4927 case DRM_FORMAT_NV12
:
4928 case DRM_FORMAT_NV21
:
4929 case DRM_FORMAT_NV16
:
4930 case DRM_FORMAT_NV61
:
4931 case DRM_FORMAT_NV24
:
4932 case DRM_FORMAT_NV42
:
4938 EXPORT_SYMBOL(drm_format_num_planes
);
4941 * drm_format_plane_cpp - determine the bytes per pixel value
4942 * @format: pixel format (DRM_FORMAT_*)
4943 * @plane: plane index
4946 * The bytes per pixel value for the specified plane.
4948 int drm_format_plane_cpp(uint32_t format
, int plane
)
4953 if (plane
>= drm_format_num_planes(format
))
4957 case DRM_FORMAT_YUYV
:
4958 case DRM_FORMAT_YVYU
:
4959 case DRM_FORMAT_UYVY
:
4960 case DRM_FORMAT_VYUY
:
4962 case DRM_FORMAT_NV12
:
4963 case DRM_FORMAT_NV21
:
4964 case DRM_FORMAT_NV16
:
4965 case DRM_FORMAT_NV61
:
4966 case DRM_FORMAT_NV24
:
4967 case DRM_FORMAT_NV42
:
4968 return plane
? 2 : 1;
4969 case DRM_FORMAT_YUV410
:
4970 case DRM_FORMAT_YVU410
:
4971 case DRM_FORMAT_YUV411
:
4972 case DRM_FORMAT_YVU411
:
4973 case DRM_FORMAT_YUV420
:
4974 case DRM_FORMAT_YVU420
:
4975 case DRM_FORMAT_YUV422
:
4976 case DRM_FORMAT_YVU422
:
4977 case DRM_FORMAT_YUV444
:
4978 case DRM_FORMAT_YVU444
:
4981 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
4985 EXPORT_SYMBOL(drm_format_plane_cpp
);
4988 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4989 * @format: pixel format (DRM_FORMAT_*)
4992 * The horizontal chroma subsampling factor for the
4993 * specified pixel format.
4995 int drm_format_horz_chroma_subsampling(uint32_t format
)
4998 case DRM_FORMAT_YUV411
:
4999 case DRM_FORMAT_YVU411
:
5000 case DRM_FORMAT_YUV410
:
5001 case DRM_FORMAT_YVU410
:
5003 case DRM_FORMAT_YUYV
:
5004 case DRM_FORMAT_YVYU
:
5005 case DRM_FORMAT_UYVY
:
5006 case DRM_FORMAT_VYUY
:
5007 case DRM_FORMAT_NV12
:
5008 case DRM_FORMAT_NV21
:
5009 case DRM_FORMAT_NV16
:
5010 case DRM_FORMAT_NV61
:
5011 case DRM_FORMAT_YUV422
:
5012 case DRM_FORMAT_YVU422
:
5013 case DRM_FORMAT_YUV420
:
5014 case DRM_FORMAT_YVU420
:
5020 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5023 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5024 * @format: pixel format (DRM_FORMAT_*)
5027 * The vertical chroma subsampling factor for the
5028 * specified pixel format.
5030 int drm_format_vert_chroma_subsampling(uint32_t format
)
5033 case DRM_FORMAT_YUV410
:
5034 case DRM_FORMAT_YVU410
:
5036 case DRM_FORMAT_YUV420
:
5037 case DRM_FORMAT_YVU420
:
5038 case DRM_FORMAT_NV12
:
5039 case DRM_FORMAT_NV21
:
5045 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5048 * drm_rotation_simplify() - Try to simplify the rotation
5049 * @rotation: Rotation to be simplified
5050 * @supported_rotations: Supported rotations
5052 * Attempt to simplify the rotation to a form that is supported.
5053 * Eg. if the hardware supports everything except DRM_REFLECT_X
5054 * one could call this function like this:
5056 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5057 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5058 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5060 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5061 * transforms the hardware supports, this function may not
5062 * be able to produce a supported transform, so the caller should
5063 * check the result afterwards.
5065 unsigned int drm_rotation_simplify(unsigned int rotation
,
5066 unsigned int supported_rotations
)
5068 if (rotation
& ~supported_rotations
) {
5069 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5070 rotation
= (rotation
& ~0xf) | BIT((ffs(rotation
& 0xf) + 1) % 4);
5075 EXPORT_SYMBOL(drm_rotation_simplify
);
5078 * drm_mode_config_init - initialize DRM mode_configuration structure
5081 * Initialize @dev's mode_config structure, used for tracking the graphics
5082 * configuration of @dev.
5084 * Since this initializes the modeset locks, no locking is possible. Which is no
5085 * problem, since this should happen single threaded at init time. It is the
5086 * driver's problem to ensure this guarantee.
5089 void drm_mode_config_init(struct drm_device
*dev
)
5091 mutex_init(&dev
->mode_config
.mutex
);
5092 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5093 mutex_init(&dev
->mode_config
.idr_mutex
);
5094 mutex_init(&dev
->mode_config
.fb_lock
);
5095 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5096 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5097 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5098 INIT_LIST_HEAD(&dev
->mode_config
.bridge_list
);
5099 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5100 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5101 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5102 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5103 idr_init(&dev
->mode_config
.crtc_idr
);
5105 drm_modeset_lock_all(dev
);
5106 drm_mode_create_standard_connector_properties(dev
);
5107 drm_mode_create_standard_plane_properties(dev
);
5108 drm_modeset_unlock_all(dev
);
5110 /* Just to be sure */
5111 dev
->mode_config
.num_fb
= 0;
5112 dev
->mode_config
.num_connector
= 0;
5113 dev
->mode_config
.num_crtc
= 0;
5114 dev
->mode_config
.num_encoder
= 0;
5115 dev
->mode_config
.num_overlay_plane
= 0;
5116 dev
->mode_config
.num_total_plane
= 0;
5118 EXPORT_SYMBOL(drm_mode_config_init
);
5121 * drm_mode_config_cleanup - free up DRM mode_config info
5124 * Free up all the connectors and CRTCs associated with this DRM device, then
5125 * free up the framebuffers and associated buffer objects.
5127 * Note that since this /should/ happen single-threaded at driver/device
5128 * teardown time, no locking is required. It's the driver's job to ensure that
5129 * this guarantee actually holds true.
5131 * FIXME: cleanup any dangling user buffer objects too
5133 void drm_mode_config_cleanup(struct drm_device
*dev
)
5135 struct drm_connector
*connector
, *ot
;
5136 struct drm_crtc
*crtc
, *ct
;
5137 struct drm_encoder
*encoder
, *enct
;
5138 struct drm_bridge
*bridge
, *brt
;
5139 struct drm_framebuffer
*fb
, *fbt
;
5140 struct drm_property
*property
, *pt
;
5141 struct drm_property_blob
*blob
, *bt
;
5142 struct drm_plane
*plane
, *plt
;
5144 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5146 encoder
->funcs
->destroy(encoder
);
5149 list_for_each_entry_safe(bridge
, brt
,
5150 &dev
->mode_config
.bridge_list
, head
) {
5151 bridge
->funcs
->destroy(bridge
);
5154 list_for_each_entry_safe(connector
, ot
,
5155 &dev
->mode_config
.connector_list
, head
) {
5156 connector
->funcs
->destroy(connector
);
5159 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5161 drm_property_destroy(dev
, property
);
5164 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5166 drm_property_destroy_blob(dev
, blob
);
5170 * Single-threaded teardown context, so it's not required to grab the
5171 * fb_lock to protect against concurrent fb_list access. Contrary, it
5172 * would actually deadlock with the drm_framebuffer_cleanup function.
5174 * Also, if there are any framebuffers left, that's a driver leak now,
5175 * so politely WARN about this.
5177 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5178 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5179 drm_framebuffer_remove(fb
);
5182 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5184 plane
->funcs
->destroy(plane
);
5187 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5188 crtc
->funcs
->destroy(crtc
);
5191 idr_destroy(&dev
->mode_config
.crtc_idr
);
5192 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5194 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5196 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5197 unsigned int supported_rotations
)
5199 static const struct drm_prop_enum_list props
[] = {
5200 { DRM_ROTATE_0
, "rotate-0" },
5201 { DRM_ROTATE_90
, "rotate-90" },
5202 { DRM_ROTATE_180
, "rotate-180" },
5203 { DRM_ROTATE_270
, "rotate-270" },
5204 { DRM_REFLECT_X
, "reflect-x" },
5205 { DRM_REFLECT_Y
, "reflect-y" },
5208 return drm_property_create_bitmask(dev
, 0, "rotation",
5209 props
, ARRAY_SIZE(props
),
5210 supported_rotations
);
5212 EXPORT_SYMBOL(drm_mode_create_rotation_property
);