2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_fourcc.h>
40 #include <drm/drm_modeset_lock.h>
42 #include "drm_crtc_internal.h"
43 #include "drm_internal.h"
45 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
46 struct drm_mode_fb_cmd2
*r
,
47 struct drm_file
*file_priv
);
49 /* Avoid boilerplate. I'm tired of typing. */
50 #define DRM_ENUM_NAME_FN(fnname, list) \
51 const char *fnname(int val) \
54 for (i = 0; i < ARRAY_SIZE(list); i++) { \
55 if (list[i].type == val) \
56 return list[i].name; \
64 static const struct drm_prop_enum_list drm_dpms_enum_list
[] =
65 { { DRM_MODE_DPMS_ON
, "On" },
66 { DRM_MODE_DPMS_STANDBY
, "Standby" },
67 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
68 { DRM_MODE_DPMS_OFF
, "Off" }
71 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
73 static const struct drm_prop_enum_list drm_plane_type_enum_list
[] =
75 { DRM_PLANE_TYPE_OVERLAY
, "Overlay" },
76 { DRM_PLANE_TYPE_PRIMARY
, "Primary" },
77 { DRM_PLANE_TYPE_CURSOR
, "Cursor" },
83 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] =
85 { DRM_MODE_SCALE_NONE
, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
87 { DRM_MODE_SCALE_CENTER
, "Center" },
88 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list
[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE
, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3
, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9
, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list
[] =
102 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
103 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
104 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
107 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
109 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] =
111 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
112 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
113 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
116 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
117 drm_dvi_i_subconnector_enum_list
)
119 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] =
121 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
125 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
128 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
130 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] =
132 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
133 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
134 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
135 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
136 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
139 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
140 drm_tv_subconnector_enum_list
)
142 static const struct drm_prop_enum_list drm_dirty_info_enum_list
[] = {
143 { DRM_MODE_DIRTY_OFF
, "Off" },
144 { DRM_MODE_DIRTY_ON
, "On" },
145 { DRM_MODE_DIRTY_ANNOTATE
, "Annotate" },
148 struct drm_conn_prop_enum_list
{
155 * Connector and encoder types.
157 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] =
158 { { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
159 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
160 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
161 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
162 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
163 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
164 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
165 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
166 { DRM_MODE_CONNECTOR_Component
, "Component" },
167 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
168 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
169 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
170 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
171 { DRM_MODE_CONNECTOR_TV
, "TV" },
172 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
173 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
174 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
177 static const struct drm_prop_enum_list drm_encoder_enum_list
[] =
178 { { DRM_MODE_ENCODER_NONE
, "None" },
179 { DRM_MODE_ENCODER_DAC
, "DAC" },
180 { DRM_MODE_ENCODER_TMDS
, "TMDS" },
181 { DRM_MODE_ENCODER_LVDS
, "LVDS" },
182 { DRM_MODE_ENCODER_TVDAC
, "TV" },
183 { DRM_MODE_ENCODER_VIRTUAL
, "Virtual" },
184 { DRM_MODE_ENCODER_DSI
, "DSI" },
185 { DRM_MODE_ENCODER_DPMST
, "DP MST" },
188 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] =
190 { SubPixelUnknown
, "Unknown" },
191 { SubPixelHorizontalRGB
, "Horizontal RGB" },
192 { SubPixelHorizontalBGR
, "Horizontal BGR" },
193 { SubPixelVerticalRGB
, "Vertical RGB" },
194 { SubPixelVerticalBGR
, "Vertical BGR" },
195 { SubPixelNone
, "None" },
198 void drm_connector_ida_init(void)
202 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
203 ida_init(&drm_connector_enum_list
[i
].ida
);
206 void drm_connector_ida_destroy(void)
210 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
211 ida_destroy(&drm_connector_enum_list
[i
].ida
);
215 * drm_get_connector_status_name - return a string for connector status
216 * @status: connector status to compute name of
218 * In contrast to the other drm_get_*_name functions this one here returns a
219 * const pointer and hence is threadsafe.
221 const char *drm_get_connector_status_name(enum drm_connector_status status
)
223 if (status
== connector_status_connected
)
225 else if (status
== connector_status_disconnected
)
226 return "disconnected";
230 EXPORT_SYMBOL(drm_get_connector_status_name
);
233 * drm_get_subpixel_order_name - return a string for a given subpixel enum
234 * @order: enum of subpixel_order
236 * Note you could abuse this and return something out of bounds, but that
237 * would be a caller error. No unscrubbed user data should make it here.
239 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
241 return drm_subpixel_enum_list
[order
].name
;
243 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
245 static char printable_char(int c
)
247 return isascii(c
) && isprint(c
) ? c
: '?';
251 * drm_get_format_name - return a string for drm fourcc format
252 * @format: format to compute name of
254 * Note that the buffer used by this function is globally shared and owned by
255 * the function itself.
257 * FIXME: This isn't really multithreading safe.
259 const char *drm_get_format_name(uint32_t format
)
263 snprintf(buf
, sizeof(buf
),
264 "%c%c%c%c %s-endian (0x%08x)",
265 printable_char(format
& 0xff),
266 printable_char((format
>> 8) & 0xff),
267 printable_char((format
>> 16) & 0xff),
268 printable_char((format
>> 24) & 0x7f),
269 format
& DRM_FORMAT_BIG_ENDIAN
? "big" : "little",
274 EXPORT_SYMBOL(drm_get_format_name
);
277 * Internal function to assign a slot in the object idr and optionally
278 * register the object into the idr.
280 static int drm_mode_object_get_reg(struct drm_device
*dev
,
281 struct drm_mode_object
*obj
,
287 mutex_lock(&dev
->mode_config
.idr_mutex
);
288 ret
= idr_alloc(&dev
->mode_config
.crtc_idr
, register_obj
? obj
: NULL
, 1, 0, GFP_KERNEL
);
291 * Set up the object linking under the protection of the idr
292 * lock so that other users can't see inconsistent state.
295 obj
->type
= obj_type
;
297 mutex_unlock(&dev
->mode_config
.idr_mutex
);
299 return ret
< 0 ? ret
: 0;
303 * drm_mode_object_get - allocate a new modeset identifier
305 * @obj: object pointer, used to generate unique ID
306 * @obj_type: object type
308 * Create a unique identifier based on @ptr in @dev's identifier space. Used
309 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
310 * modeset identifiers are _not_ reference counted. Hence don't use this for
311 * reference counted modeset objects like framebuffers.
314 * New unique (relative to other objects in @dev) integer identifier for the
317 int drm_mode_object_get(struct drm_device
*dev
,
318 struct drm_mode_object
*obj
, uint32_t obj_type
)
320 return drm_mode_object_get_reg(dev
, obj
, obj_type
, true);
323 static void drm_mode_object_register(struct drm_device
*dev
,
324 struct drm_mode_object
*obj
)
326 mutex_lock(&dev
->mode_config
.idr_mutex
);
327 idr_replace(&dev
->mode_config
.crtc_idr
, obj
, obj
->id
);
328 mutex_unlock(&dev
->mode_config
.idr_mutex
);
332 * drm_mode_object_put - free a modeset identifer
334 * @object: object to free
336 * Free @id from @dev's unique identifier pool. Note that despite the _get
337 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
338 * for reference counted modeset objects like framebuffers.
340 void drm_mode_object_put(struct drm_device
*dev
,
341 struct drm_mode_object
*object
)
343 mutex_lock(&dev
->mode_config
.idr_mutex
);
344 idr_remove(&dev
->mode_config
.crtc_idr
, object
->id
);
345 mutex_unlock(&dev
->mode_config
.idr_mutex
);
348 static struct drm_mode_object
*_object_find(struct drm_device
*dev
,
349 uint32_t id
, uint32_t type
)
351 struct drm_mode_object
*obj
= NULL
;
353 mutex_lock(&dev
->mode_config
.idr_mutex
);
354 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
355 if (obj
&& type
!= DRM_MODE_OBJECT_ANY
&& obj
->type
!= type
)
357 if (obj
&& obj
->id
!= id
)
359 /* don't leak out unref'd fb's */
360 if (obj
&& (obj
->type
== DRM_MODE_OBJECT_FB
))
362 mutex_unlock(&dev
->mode_config
.idr_mutex
);
368 * drm_mode_object_find - look up a drm object with static lifetime
370 * @id: id of the mode object
371 * @type: type of the mode object
373 * Note that framebuffers cannot be looked up with this functions - since those
374 * are reference counted, they need special treatment. Even with
375 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
376 * rather than WARN_ON()).
378 struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
379 uint32_t id
, uint32_t type
)
381 struct drm_mode_object
*obj
= NULL
;
383 /* Framebuffers are reference counted and need their own lookup
385 WARN_ON(type
== DRM_MODE_OBJECT_FB
);
386 obj
= _object_find(dev
, id
, type
);
389 EXPORT_SYMBOL(drm_mode_object_find
);
392 * drm_framebuffer_init - initialize a framebuffer
394 * @fb: framebuffer to be initialized
395 * @funcs: ... with these functions
397 * Allocates an ID for the framebuffer's parent mode object, sets its mode
398 * functions & device file and adds it to the master fd list.
401 * This functions publishes the fb and makes it available for concurrent access
402 * by other users. Which means by this point the fb _must_ be fully set up -
403 * since all the fb attributes are invariant over its lifetime, no further
404 * locking but only correct reference counting is required.
407 * Zero on success, error code on failure.
409 int drm_framebuffer_init(struct drm_device
*dev
, struct drm_framebuffer
*fb
,
410 const struct drm_framebuffer_funcs
*funcs
)
414 mutex_lock(&dev
->mode_config
.fb_lock
);
415 kref_init(&fb
->refcount
);
416 INIT_LIST_HEAD(&fb
->filp_head
);
420 ret
= drm_mode_object_get(dev
, &fb
->base
, DRM_MODE_OBJECT_FB
);
424 dev
->mode_config
.num_fb
++;
425 list_add(&fb
->head
, &dev
->mode_config
.fb_list
);
427 mutex_unlock(&dev
->mode_config
.fb_lock
);
431 EXPORT_SYMBOL(drm_framebuffer_init
);
433 /* dev->mode_config.fb_lock must be held! */
434 static void __drm_framebuffer_unregister(struct drm_device
*dev
,
435 struct drm_framebuffer
*fb
)
437 mutex_lock(&dev
->mode_config
.idr_mutex
);
438 idr_remove(&dev
->mode_config
.crtc_idr
, fb
->base
.id
);
439 mutex_unlock(&dev
->mode_config
.idr_mutex
);
444 static void drm_framebuffer_free(struct kref
*kref
)
446 struct drm_framebuffer
*fb
=
447 container_of(kref
, struct drm_framebuffer
, refcount
);
448 struct drm_device
*dev
= fb
->dev
;
451 * The lookup idr holds a weak reference, which has not necessarily been
452 * removed at this point. Check for that.
454 mutex_lock(&dev
->mode_config
.fb_lock
);
456 /* Mark fb as reaped and drop idr ref. */
457 __drm_framebuffer_unregister(dev
, fb
);
459 mutex_unlock(&dev
->mode_config
.fb_lock
);
461 fb
->funcs
->destroy(fb
);
464 static struct drm_framebuffer
*__drm_framebuffer_lookup(struct drm_device
*dev
,
467 struct drm_mode_object
*obj
= NULL
;
468 struct drm_framebuffer
*fb
;
470 mutex_lock(&dev
->mode_config
.idr_mutex
);
471 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
472 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_FB
) || (obj
->id
!= id
))
476 mutex_unlock(&dev
->mode_config
.idr_mutex
);
482 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
484 * @id: id of the fb object
486 * If successful, this grabs an additional reference to the framebuffer -
487 * callers need to make sure to eventually unreference the returned framebuffer
488 * again, using @drm_framebuffer_unreference.
490 struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
493 struct drm_framebuffer
*fb
;
495 mutex_lock(&dev
->mode_config
.fb_lock
);
496 fb
= __drm_framebuffer_lookup(dev
, id
);
498 if (!kref_get_unless_zero(&fb
->refcount
))
501 mutex_unlock(&dev
->mode_config
.fb_lock
);
505 EXPORT_SYMBOL(drm_framebuffer_lookup
);
508 * drm_framebuffer_unreference - unref a framebuffer
509 * @fb: framebuffer to unref
511 * This functions decrements the fb's refcount and frees it if it drops to zero.
513 void drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
515 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
516 kref_put(&fb
->refcount
, drm_framebuffer_free
);
518 EXPORT_SYMBOL(drm_framebuffer_unreference
);
521 * drm_framebuffer_reference - incr the fb refcnt
524 * This functions increments the fb's refcount.
526 void drm_framebuffer_reference(struct drm_framebuffer
*fb
)
528 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
529 kref_get(&fb
->refcount
);
531 EXPORT_SYMBOL(drm_framebuffer_reference
);
533 static void drm_framebuffer_free_bug(struct kref
*kref
)
538 static void __drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
540 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
541 kref_put(&fb
->refcount
, drm_framebuffer_free_bug
);
545 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
546 * @fb: fb to unregister
548 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
549 * those used for fbdev. Note that the caller must hold a reference of it's own,
550 * i.e. the object may not be destroyed through this call (since it'll lead to a
551 * locking inversion).
553 void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
)
555 struct drm_device
*dev
= fb
->dev
;
557 mutex_lock(&dev
->mode_config
.fb_lock
);
558 /* Mark fb as reaped and drop idr ref. */
559 __drm_framebuffer_unregister(dev
, fb
);
560 mutex_unlock(&dev
->mode_config
.fb_lock
);
562 EXPORT_SYMBOL(drm_framebuffer_unregister_private
);
565 * drm_framebuffer_cleanup - remove a framebuffer object
566 * @fb: framebuffer to remove
568 * Cleanup framebuffer. This function is intended to be used from the drivers
569 * ->destroy callback. It can also be used to clean up driver private
570 * framebuffers embedded into a larger structure.
572 * Note that this function does not remove the fb from active usuage - if it is
573 * still used anywhere, hilarity can ensue since userspace could call getfb on
574 * the id and get back -EINVAL. Obviously no concern at driver unload time.
576 * Also, the framebuffer will not be removed from the lookup idr - for
577 * user-created framebuffers this will happen in in the rmfb ioctl. For
578 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
579 * drm_framebuffer_unregister_private.
581 void drm_framebuffer_cleanup(struct drm_framebuffer
*fb
)
583 struct drm_device
*dev
= fb
->dev
;
585 mutex_lock(&dev
->mode_config
.fb_lock
);
587 dev
->mode_config
.num_fb
--;
588 mutex_unlock(&dev
->mode_config
.fb_lock
);
590 EXPORT_SYMBOL(drm_framebuffer_cleanup
);
593 * drm_framebuffer_remove - remove and unreference a framebuffer object
594 * @fb: framebuffer to remove
596 * Scans all the CRTCs and planes in @dev's mode_config. If they're
597 * using @fb, removes it, setting it to NULL. Then drops the reference to the
598 * passed-in framebuffer. Might take the modeset locks.
600 * Note that this function optimizes the cleanup away if the caller holds the
601 * last reference to the framebuffer. It is also guaranteed to not take the
602 * modeset locks in this case.
604 void drm_framebuffer_remove(struct drm_framebuffer
*fb
)
606 struct drm_device
*dev
= fb
->dev
;
607 struct drm_crtc
*crtc
;
608 struct drm_plane
*plane
;
609 struct drm_mode_set set
;
612 WARN_ON(!list_empty(&fb
->filp_head
));
615 * drm ABI mandates that we remove any deleted framebuffers from active
616 * useage. But since most sane clients only remove framebuffers they no
617 * longer need, try to optimize this away.
619 * Since we're holding a reference ourselves, observing a refcount of 1
620 * means that we're the last holder and can skip it. Also, the refcount
621 * can never increase from 1 again, so we don't need any barriers or
624 * Note that userspace could try to race with use and instate a new
625 * usage _after_ we've cleared all current ones. End result will be an
626 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
629 if (atomic_read(&fb
->refcount
.refcount
) > 1) {
630 drm_modeset_lock_all(dev
);
631 /* remove from any CRTC */
632 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
633 if (crtc
->primary
->fb
== fb
) {
634 /* should turn off the crtc */
635 memset(&set
, 0, sizeof(struct drm_mode_set
));
638 ret
= drm_mode_set_config_internal(&set
);
640 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc
);
644 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
) {
646 drm_plane_force_disable(plane
);
648 drm_modeset_unlock_all(dev
);
651 drm_framebuffer_unreference(fb
);
653 EXPORT_SYMBOL(drm_framebuffer_remove
);
655 DEFINE_WW_CLASS(crtc_ww_class
);
658 * drm_crtc_init_with_planes - Initialise a new CRTC object with
659 * specified primary and cursor planes.
661 * @crtc: CRTC object to init
662 * @primary: Primary plane for CRTC
663 * @cursor: Cursor plane for CRTC
664 * @funcs: callbacks for the new CRTC
666 * Inits a new object created as base part of a driver crtc object.
669 * Zero on success, error code on failure.
671 int drm_crtc_init_with_planes(struct drm_device
*dev
, struct drm_crtc
*crtc
,
672 struct drm_plane
*primary
,
673 struct drm_plane
*cursor
,
674 const struct drm_crtc_funcs
*funcs
)
676 struct drm_mode_config
*config
= &dev
->mode_config
;
681 crtc
->invert_dimensions
= false;
683 drm_modeset_lock_init(&crtc
->mutex
);
684 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
688 crtc
->base
.properties
= &crtc
->properties
;
690 list_add_tail(&crtc
->head
, &config
->crtc_list
);
693 crtc
->primary
= primary
;
694 crtc
->cursor
= cursor
;
696 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
698 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
704 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
707 * drm_crtc_cleanup - Clean up the core crtc usage
708 * @crtc: CRTC to cleanup
710 * This function cleans up @crtc and removes it from the DRM mode setting
711 * core. Note that the function does *not* free the crtc structure itself,
712 * this is the responsibility of the caller.
714 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
716 struct drm_device
*dev
= crtc
->dev
;
718 kfree(crtc
->gamma_store
);
719 crtc
->gamma_store
= NULL
;
721 drm_modeset_lock_fini(&crtc
->mutex
);
723 drm_mode_object_put(dev
, &crtc
->base
);
724 list_del(&crtc
->head
);
725 dev
->mode_config
.num_crtc
--;
727 EXPORT_SYMBOL(drm_crtc_cleanup
);
730 * drm_crtc_index - find the index of a registered CRTC
731 * @crtc: CRTC to find index for
733 * Given a registered CRTC, return the index of that CRTC within a DRM
734 * device's list of CRTCs.
736 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
738 unsigned int index
= 0;
739 struct drm_crtc
*tmp
;
741 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
750 EXPORT_SYMBOL(drm_crtc_index
);
753 * drm_mode_remove - remove and free a mode
754 * @connector: connector list to modify
755 * @mode: mode to remove
757 * Remove @mode from @connector's mode list, then free it.
759 static void drm_mode_remove(struct drm_connector
*connector
,
760 struct drm_display_mode
*mode
)
762 list_del(&mode
->head
);
763 drm_mode_destroy(connector
->dev
, mode
);
767 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
768 * @connector: connector to quwery
769 * @mode: returned mode
771 * The kernel supports per-connector configration of its consoles through
772 * use of the video= parameter. This function parses that option and
773 * extracts the user's specified mode (or enable/disable status) for a
774 * particular connector. This is typically only used during the early fbdev
777 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
779 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
782 if (fb_get_options(connector
->name
, &option
))
785 if (!drm_mode_parse_command_line_for_connector(option
,
793 switch (mode
->force
) {
797 case DRM_FORCE_ON_DIGITAL
:
806 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
807 connector
->force
= mode
->force
;
810 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
812 mode
->xres
, mode
->yres
,
813 mode
->refresh_specified
? mode
->refresh
: 60,
814 mode
->rb
? " reduced blanking" : "",
815 mode
->margins
? " with margins" : "",
816 mode
->interlace
? " interlaced" : "");
820 * drm_connector_init - Init a preallocated connector
822 * @connector: the connector to init
823 * @funcs: callbacks for this connector
824 * @connector_type: user visible type of the connector
826 * Initialises a preallocated connector. Connectors should be
827 * subclassed as part of driver connector objects.
830 * Zero on success, error code on failure.
832 int drm_connector_init(struct drm_device
*dev
,
833 struct drm_connector
*connector
,
834 const struct drm_connector_funcs
*funcs
,
838 struct ida
*connector_ida
=
839 &drm_connector_enum_list
[connector_type
].ida
;
841 drm_modeset_lock_all(dev
);
843 ret
= drm_mode_object_get_reg(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
, false);
847 connector
->base
.properties
= &connector
->properties
;
848 connector
->dev
= dev
;
849 connector
->funcs
= funcs
;
850 connector
->connector_type
= connector_type
;
851 connector
->connector_type_id
=
852 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
853 if (connector
->connector_type_id
< 0) {
854 ret
= connector
->connector_type_id
;
858 kasprintf(GFP_KERNEL
, "%s-%d",
859 drm_connector_enum_list
[connector_type
].name
,
860 connector
->connector_type_id
);
861 if (!connector
->name
) {
866 INIT_LIST_HEAD(&connector
->probed_modes
);
867 INIT_LIST_HEAD(&connector
->modes
);
868 connector
->edid_blob_ptr
= NULL
;
869 connector
->status
= connector_status_unknown
;
871 drm_connector_get_cmdline_mode(connector
);
873 list_add_tail(&connector
->head
, &dev
->mode_config
.connector_list
);
874 dev
->mode_config
.num_connector
++;
876 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
877 drm_object_attach_property(&connector
->base
,
878 dev
->mode_config
.edid_property
,
881 drm_object_attach_property(&connector
->base
,
882 dev
->mode_config
.dpms_property
, 0);
884 connector
->debugfs_entry
= NULL
;
888 drm_mode_object_put(dev
, &connector
->base
);
891 drm_modeset_unlock_all(dev
);
895 EXPORT_SYMBOL(drm_connector_init
);
898 * drm_connector_cleanup - cleans up an initialised connector
899 * @connector: connector to cleanup
901 * Cleans up the connector but doesn't free the object.
903 void drm_connector_cleanup(struct drm_connector
*connector
)
905 struct drm_device
*dev
= connector
->dev
;
906 struct drm_display_mode
*mode
, *t
;
908 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
909 drm_mode_remove(connector
, mode
);
911 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
912 drm_mode_remove(connector
, mode
);
914 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
915 connector
->connector_type_id
);
917 drm_mode_object_put(dev
, &connector
->base
);
918 kfree(connector
->name
);
919 connector
->name
= NULL
;
920 list_del(&connector
->head
);
921 dev
->mode_config
.num_connector
--;
923 EXPORT_SYMBOL(drm_connector_cleanup
);
926 * drm_connector_index - find the index of a registered connector
927 * @connector: connector to find index for
929 * Given a registered connector, return the index of that connector within a DRM
930 * device's list of connectors.
932 unsigned int drm_connector_index(struct drm_connector
*connector
)
934 unsigned int index
= 0;
935 struct drm_connector
*tmp
;
937 list_for_each_entry(tmp
, &connector
->dev
->mode_config
.connector_list
, head
) {
938 if (tmp
== connector
)
946 EXPORT_SYMBOL(drm_connector_index
);
949 * drm_connector_register - register a connector
950 * @connector: the connector to register
952 * Register userspace interfaces for a connector
955 * Zero on success, error code on failure.
957 int drm_connector_register(struct drm_connector
*connector
)
961 drm_mode_object_register(connector
->dev
, &connector
->base
);
963 ret
= drm_sysfs_connector_add(connector
);
967 ret
= drm_debugfs_connector_add(connector
);
969 drm_sysfs_connector_remove(connector
);
975 EXPORT_SYMBOL(drm_connector_register
);
978 * drm_connector_unregister - unregister a connector
979 * @connector: the connector to unregister
981 * Unregister userspace interfaces for a connector
983 void drm_connector_unregister(struct drm_connector
*connector
)
985 drm_sysfs_connector_remove(connector
);
986 drm_debugfs_connector_remove(connector
);
988 EXPORT_SYMBOL(drm_connector_unregister
);
992 * drm_connector_unplug_all - unregister connector userspace interfaces
995 * This function unregisters all connector userspace interfaces in sysfs. Should
996 * be call when the device is disconnected, e.g. from an usb driver's
997 * ->disconnect callback.
999 void drm_connector_unplug_all(struct drm_device
*dev
)
1001 struct drm_connector
*connector
;
1003 /* taking the mode config mutex ends up in a clash with sysfs */
1004 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1005 drm_connector_unregister(connector
);
1008 EXPORT_SYMBOL(drm_connector_unplug_all
);
1011 * drm_bridge_init - initialize a drm transcoder/bridge
1013 * @bridge: transcoder/bridge to set up
1014 * @funcs: bridge function table
1016 * Initialises a preallocated bridge. Bridges should be
1017 * subclassed as part of driver connector objects.
1020 * Zero on success, error code on failure.
1022 int drm_bridge_init(struct drm_device
*dev
, struct drm_bridge
*bridge
,
1023 const struct drm_bridge_funcs
*funcs
)
1027 drm_modeset_lock_all(dev
);
1029 ret
= drm_mode_object_get(dev
, &bridge
->base
, DRM_MODE_OBJECT_BRIDGE
);
1034 bridge
->funcs
= funcs
;
1036 list_add_tail(&bridge
->head
, &dev
->mode_config
.bridge_list
);
1037 dev
->mode_config
.num_bridge
++;
1040 drm_modeset_unlock_all(dev
);
1043 EXPORT_SYMBOL(drm_bridge_init
);
1046 * drm_bridge_cleanup - cleans up an initialised bridge
1047 * @bridge: bridge to cleanup
1049 * Cleans up the bridge but doesn't free the object.
1051 void drm_bridge_cleanup(struct drm_bridge
*bridge
)
1053 struct drm_device
*dev
= bridge
->dev
;
1055 drm_modeset_lock_all(dev
);
1056 drm_mode_object_put(dev
, &bridge
->base
);
1057 list_del(&bridge
->head
);
1058 dev
->mode_config
.num_bridge
--;
1059 drm_modeset_unlock_all(dev
);
1061 EXPORT_SYMBOL(drm_bridge_cleanup
);
1064 * drm_encoder_init - Init a preallocated encoder
1066 * @encoder: the encoder to init
1067 * @funcs: callbacks for this encoder
1068 * @encoder_type: user visible type of the encoder
1070 * Initialises a preallocated encoder. Encoder should be
1071 * subclassed as part of driver encoder objects.
1074 * Zero on success, error code on failure.
1076 int drm_encoder_init(struct drm_device
*dev
,
1077 struct drm_encoder
*encoder
,
1078 const struct drm_encoder_funcs
*funcs
,
1083 drm_modeset_lock_all(dev
);
1085 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1090 encoder
->encoder_type
= encoder_type
;
1091 encoder
->funcs
= funcs
;
1092 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1093 drm_encoder_enum_list
[encoder_type
].name
,
1095 if (!encoder
->name
) {
1100 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1101 dev
->mode_config
.num_encoder
++;
1105 drm_mode_object_put(dev
, &encoder
->base
);
1108 drm_modeset_unlock_all(dev
);
1112 EXPORT_SYMBOL(drm_encoder_init
);
1115 * drm_encoder_cleanup - cleans up an initialised encoder
1116 * @encoder: encoder to cleanup
1118 * Cleans up the encoder but doesn't free the object.
1120 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1122 struct drm_device
*dev
= encoder
->dev
;
1123 drm_modeset_lock_all(dev
);
1124 drm_mode_object_put(dev
, &encoder
->base
);
1125 kfree(encoder
->name
);
1126 encoder
->name
= NULL
;
1127 list_del(&encoder
->head
);
1128 dev
->mode_config
.num_encoder
--;
1129 drm_modeset_unlock_all(dev
);
1131 EXPORT_SYMBOL(drm_encoder_cleanup
);
1134 * drm_universal_plane_init - Initialize a new universal plane object
1136 * @plane: plane object to init
1137 * @possible_crtcs: bitmask of possible CRTCs
1138 * @funcs: callbacks for the new plane
1139 * @formats: array of supported formats (%DRM_FORMAT_*)
1140 * @format_count: number of elements in @formats
1141 * @type: type of plane (overlay, primary, cursor)
1143 * Initializes a plane object of type @type.
1146 * Zero on success, error code on failure.
1148 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1149 unsigned long possible_crtcs
,
1150 const struct drm_plane_funcs
*funcs
,
1151 const uint32_t *formats
, uint32_t format_count
,
1152 enum drm_plane_type type
)
1156 drm_modeset_lock_all(dev
);
1158 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1162 plane
->base
.properties
= &plane
->properties
;
1164 plane
->funcs
= funcs
;
1165 plane
->format_types
= kmalloc(sizeof(uint32_t) * format_count
,
1167 if (!plane
->format_types
) {
1168 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1169 drm_mode_object_put(dev
, &plane
->base
);
1174 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1175 plane
->format_count
= format_count
;
1176 plane
->possible_crtcs
= possible_crtcs
;
1179 list_add_tail(&plane
->head
, &dev
->mode_config
.plane_list
);
1180 dev
->mode_config
.num_total_plane
++;
1181 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1182 dev
->mode_config
.num_overlay_plane
++;
1184 drm_object_attach_property(&plane
->base
,
1185 dev
->mode_config
.plane_type_property
,
1189 drm_modeset_unlock_all(dev
);
1193 EXPORT_SYMBOL(drm_universal_plane_init
);
1196 * drm_plane_init - Initialize a legacy plane
1198 * @plane: plane object to init
1199 * @possible_crtcs: bitmask of possible CRTCs
1200 * @funcs: callbacks for the new plane
1201 * @formats: array of supported formats (%DRM_FORMAT_*)
1202 * @format_count: number of elements in @formats
1203 * @is_primary: plane type (primary vs overlay)
1205 * Legacy API to initialize a DRM plane.
1207 * New drivers should call drm_universal_plane_init() instead.
1210 * Zero on success, error code on failure.
1212 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1213 unsigned long possible_crtcs
,
1214 const struct drm_plane_funcs
*funcs
,
1215 const uint32_t *formats
, uint32_t format_count
,
1218 enum drm_plane_type type
;
1220 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1221 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1222 formats
, format_count
, type
);
1224 EXPORT_SYMBOL(drm_plane_init
);
1227 * drm_plane_cleanup - Clean up the core plane usage
1228 * @plane: plane to cleanup
1230 * This function cleans up @plane and removes it from the DRM mode setting
1231 * core. Note that the function does *not* free the plane structure itself,
1232 * this is the responsibility of the caller.
1234 void drm_plane_cleanup(struct drm_plane
*plane
)
1236 struct drm_device
*dev
= plane
->dev
;
1238 drm_modeset_lock_all(dev
);
1239 kfree(plane
->format_types
);
1240 drm_mode_object_put(dev
, &plane
->base
);
1242 BUG_ON(list_empty(&plane
->head
));
1244 list_del(&plane
->head
);
1245 dev
->mode_config
.num_total_plane
--;
1246 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1247 dev
->mode_config
.num_overlay_plane
--;
1248 drm_modeset_unlock_all(dev
);
1250 EXPORT_SYMBOL(drm_plane_cleanup
);
1253 * drm_plane_index - find the index of a registered plane
1254 * @plane: plane to find index for
1256 * Given a registered plane, return the index of that CRTC within a DRM
1257 * device's list of planes.
1259 unsigned int drm_plane_index(struct drm_plane
*plane
)
1261 unsigned int index
= 0;
1262 struct drm_plane
*tmp
;
1264 list_for_each_entry(tmp
, &plane
->dev
->mode_config
.plane_list
, head
) {
1273 EXPORT_SYMBOL(drm_plane_index
);
1276 * drm_plane_force_disable - Forcibly disable a plane
1277 * @plane: plane to disable
1279 * Forces the plane to be disabled.
1281 * Used when the plane's current framebuffer is destroyed,
1282 * and when restoring fbdev mode.
1284 void drm_plane_force_disable(struct drm_plane
*plane
)
1291 plane
->old_fb
= plane
->fb
;
1292 ret
= plane
->funcs
->disable_plane(plane
);
1294 DRM_ERROR("failed to disable plane with busy fb\n");
1295 plane
->old_fb
= NULL
;
1298 /* disconnect the plane from the fb and crtc: */
1299 __drm_framebuffer_unreference(plane
->old_fb
);
1300 plane
->old_fb
= NULL
;
1304 EXPORT_SYMBOL(drm_plane_force_disable
);
1306 static int drm_mode_create_standard_connector_properties(struct drm_device
*dev
)
1308 struct drm_property
*edid
;
1309 struct drm_property
*dpms
;
1310 struct drm_property
*dev_path
;
1313 * Standard properties (apply to all connectors)
1315 edid
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1316 DRM_MODE_PROP_IMMUTABLE
,
1318 dev
->mode_config
.edid_property
= edid
;
1320 dpms
= drm_property_create_enum(dev
, 0,
1321 "DPMS", drm_dpms_enum_list
,
1322 ARRAY_SIZE(drm_dpms_enum_list
));
1323 dev
->mode_config
.dpms_property
= dpms
;
1325 dev_path
= drm_property_create(dev
,
1326 DRM_MODE_PROP_BLOB
|
1327 DRM_MODE_PROP_IMMUTABLE
,
1329 dev
->mode_config
.path_property
= dev_path
;
1334 static int drm_mode_create_standard_plane_properties(struct drm_device
*dev
)
1336 struct drm_property
*type
;
1339 * Standard properties (apply to all planes)
1341 type
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1342 "type", drm_plane_type_enum_list
,
1343 ARRAY_SIZE(drm_plane_type_enum_list
));
1344 dev
->mode_config
.plane_type_property
= type
;
1350 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1353 * Called by a driver the first time a DVI-I connector is made.
1355 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1357 struct drm_property
*dvi_i_selector
;
1358 struct drm_property
*dvi_i_subconnector
;
1360 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1364 drm_property_create_enum(dev
, 0,
1365 "select subconnector",
1366 drm_dvi_i_select_enum_list
,
1367 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1368 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1370 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1372 drm_dvi_i_subconnector_enum_list
,
1373 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1374 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1378 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1381 * drm_create_tv_properties - create TV specific connector properties
1383 * @num_modes: number of different TV formats (modes) supported
1384 * @modes: array of pointers to strings containing name of each format
1386 * Called by a driver's TV initialization routine, this function creates
1387 * the TV specific connector properties for a given device. Caller is
1388 * responsible for allocating a list of format names and passing them to
1391 int drm_mode_create_tv_properties(struct drm_device
*dev
, int num_modes
,
1394 struct drm_property
*tv_selector
;
1395 struct drm_property
*tv_subconnector
;
1398 if (dev
->mode_config
.tv_select_subconnector_property
)
1402 * Basic connector properties
1404 tv_selector
= drm_property_create_enum(dev
, 0,
1405 "select subconnector",
1406 drm_tv_select_enum_list
,
1407 ARRAY_SIZE(drm_tv_select_enum_list
));
1408 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1411 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1413 drm_tv_subconnector_enum_list
,
1414 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1415 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1418 * Other, TV specific properties: margins & TV modes.
1420 dev
->mode_config
.tv_left_margin_property
=
1421 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1423 dev
->mode_config
.tv_right_margin_property
=
1424 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1426 dev
->mode_config
.tv_top_margin_property
=
1427 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1429 dev
->mode_config
.tv_bottom_margin_property
=
1430 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1432 dev
->mode_config
.tv_mode_property
=
1433 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1435 for (i
= 0; i
< num_modes
; i
++)
1436 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1439 dev
->mode_config
.tv_brightness_property
=
1440 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1442 dev
->mode_config
.tv_contrast_property
=
1443 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1445 dev
->mode_config
.tv_flicker_reduction_property
=
1446 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1448 dev
->mode_config
.tv_overscan_property
=
1449 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1451 dev
->mode_config
.tv_saturation_property
=
1452 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1454 dev
->mode_config
.tv_hue_property
=
1455 drm_property_create_range(dev
, 0, "hue", 0, 100);
1459 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1462 * drm_mode_create_scaling_mode_property - create scaling mode property
1465 * Called by a driver the first time it's needed, must be attached to desired
1468 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1470 struct drm_property
*scaling_mode
;
1472 if (dev
->mode_config
.scaling_mode_property
)
1476 drm_property_create_enum(dev
, 0, "scaling mode",
1477 drm_scaling_mode_enum_list
,
1478 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1480 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1484 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1487 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1490 * Called by a driver the first time it's needed, must be attached to desired
1494 * Zero on success, errno on failure.
1496 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1498 if (dev
->mode_config
.aspect_ratio_property
)
1501 dev
->mode_config
.aspect_ratio_property
=
1502 drm_property_create_enum(dev
, 0, "aspect ratio",
1503 drm_aspect_ratio_enum_list
,
1504 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1506 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1511 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1514 * drm_mode_create_dirty_property - create dirty property
1517 * Called by a driver the first time it's needed, must be attached to desired
1520 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1522 struct drm_property
*dirty_info
;
1524 if (dev
->mode_config
.dirty_info_property
)
1528 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1530 drm_dirty_info_enum_list
,
1531 ARRAY_SIZE(drm_dirty_info_enum_list
));
1532 dev
->mode_config
.dirty_info_property
= dirty_info
;
1536 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1538 static int drm_mode_group_init(struct drm_device
*dev
, struct drm_mode_group
*group
)
1540 uint32_t total_objects
= 0;
1542 total_objects
+= dev
->mode_config
.num_crtc
;
1543 total_objects
+= dev
->mode_config
.num_connector
;
1544 total_objects
+= dev
->mode_config
.num_encoder
;
1545 total_objects
+= dev
->mode_config
.num_bridge
;
1547 group
->id_list
= kzalloc(total_objects
* sizeof(uint32_t), GFP_KERNEL
);
1548 if (!group
->id_list
)
1551 group
->num_crtcs
= 0;
1552 group
->num_connectors
= 0;
1553 group
->num_encoders
= 0;
1554 group
->num_bridges
= 0;
1558 void drm_mode_group_destroy(struct drm_mode_group
*group
)
1560 kfree(group
->id_list
);
1561 group
->id_list
= NULL
;
1565 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1566 * the drm core's responsibility to set up mode control groups.
1568 int drm_mode_group_init_legacy_group(struct drm_device
*dev
,
1569 struct drm_mode_group
*group
)
1571 struct drm_crtc
*crtc
;
1572 struct drm_encoder
*encoder
;
1573 struct drm_connector
*connector
;
1574 struct drm_bridge
*bridge
;
1577 if ((ret
= drm_mode_group_init(dev
, group
)))
1580 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
1581 group
->id_list
[group
->num_crtcs
++] = crtc
->base
.id
;
1583 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
1584 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
++] =
1587 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1588 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1589 group
->num_connectors
++] = connector
->base
.id
;
1591 list_for_each_entry(bridge
, &dev
->mode_config
.bridge_list
, head
)
1592 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1593 group
->num_connectors
+ group
->num_bridges
++] =
1598 EXPORT_SYMBOL(drm_mode_group_init_legacy_group
);
1600 void drm_reinit_primary_mode_group(struct drm_device
*dev
)
1602 drm_modeset_lock_all(dev
);
1603 drm_mode_group_destroy(&dev
->primary
->mode_group
);
1604 drm_mode_group_init_legacy_group(dev
, &dev
->primary
->mode_group
);
1605 drm_modeset_unlock_all(dev
);
1607 EXPORT_SYMBOL(drm_reinit_primary_mode_group
);
1610 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1611 * @out: drm_mode_modeinfo struct to return to the user
1612 * @in: drm_display_mode to use
1614 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1617 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo
*out
,
1618 const struct drm_display_mode
*in
)
1620 WARN(in
->hdisplay
> USHRT_MAX
|| in
->hsync_start
> USHRT_MAX
||
1621 in
->hsync_end
> USHRT_MAX
|| in
->htotal
> USHRT_MAX
||
1622 in
->hskew
> USHRT_MAX
|| in
->vdisplay
> USHRT_MAX
||
1623 in
->vsync_start
> USHRT_MAX
|| in
->vsync_end
> USHRT_MAX
||
1624 in
->vtotal
> USHRT_MAX
|| in
->vscan
> USHRT_MAX
,
1625 "timing values too large for mode info\n");
1627 out
->clock
= in
->clock
;
1628 out
->hdisplay
= in
->hdisplay
;
1629 out
->hsync_start
= in
->hsync_start
;
1630 out
->hsync_end
= in
->hsync_end
;
1631 out
->htotal
= in
->htotal
;
1632 out
->hskew
= in
->hskew
;
1633 out
->vdisplay
= in
->vdisplay
;
1634 out
->vsync_start
= in
->vsync_start
;
1635 out
->vsync_end
= in
->vsync_end
;
1636 out
->vtotal
= in
->vtotal
;
1637 out
->vscan
= in
->vscan
;
1638 out
->vrefresh
= in
->vrefresh
;
1639 out
->flags
= in
->flags
;
1640 out
->type
= in
->type
;
1641 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1642 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1646 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1647 * @out: drm_display_mode to return to the user
1648 * @in: drm_mode_modeinfo to use
1650 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1654 * Zero on success, errno on failure.
1656 static int drm_crtc_convert_umode(struct drm_display_mode
*out
,
1657 const struct drm_mode_modeinfo
*in
)
1659 if (in
->clock
> INT_MAX
|| in
->vrefresh
> INT_MAX
)
1662 if ((in
->flags
& DRM_MODE_FLAG_3D_MASK
) > DRM_MODE_FLAG_3D_MAX
)
1665 out
->clock
= in
->clock
;
1666 out
->hdisplay
= in
->hdisplay
;
1667 out
->hsync_start
= in
->hsync_start
;
1668 out
->hsync_end
= in
->hsync_end
;
1669 out
->htotal
= in
->htotal
;
1670 out
->hskew
= in
->hskew
;
1671 out
->vdisplay
= in
->vdisplay
;
1672 out
->vsync_start
= in
->vsync_start
;
1673 out
->vsync_end
= in
->vsync_end
;
1674 out
->vtotal
= in
->vtotal
;
1675 out
->vscan
= in
->vscan
;
1676 out
->vrefresh
= in
->vrefresh
;
1677 out
->flags
= in
->flags
;
1678 out
->type
= in
->type
;
1679 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1680 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1686 * drm_mode_getresources - get graphics configuration
1687 * @dev: drm device for the ioctl
1688 * @data: data pointer for the ioctl
1689 * @file_priv: drm file for the ioctl call
1691 * Construct a set of configuration description structures and return
1692 * them to the user, including CRTC, connector and framebuffer configuration.
1694 * Called by the user via ioctl.
1697 * Zero on success, errno on failure.
1699 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1700 struct drm_file
*file_priv
)
1702 struct drm_mode_card_res
*card_res
= data
;
1703 struct list_head
*lh
;
1704 struct drm_framebuffer
*fb
;
1705 struct drm_connector
*connector
;
1706 struct drm_crtc
*crtc
;
1707 struct drm_encoder
*encoder
;
1709 int connector_count
= 0;
1712 int encoder_count
= 0;
1714 uint32_t __user
*fb_id
;
1715 uint32_t __user
*crtc_id
;
1716 uint32_t __user
*connector_id
;
1717 uint32_t __user
*encoder_id
;
1718 struct drm_mode_group
*mode_group
;
1720 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1724 mutex_lock(&file_priv
->fbs_lock
);
1726 * For the non-control nodes we need to limit the list of resources
1727 * by IDs in the group list for this node
1729 list_for_each(lh
, &file_priv
->fbs
)
1732 /* handle this in 4 parts */
1734 if (card_res
->count_fbs
>= fb_count
) {
1736 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1737 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1738 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1739 mutex_unlock(&file_priv
->fbs_lock
);
1745 card_res
->count_fbs
= fb_count
;
1746 mutex_unlock(&file_priv
->fbs_lock
);
1748 drm_modeset_lock_all(dev
);
1749 if (!drm_is_primary_client(file_priv
)) {
1752 list_for_each(lh
, &dev
->mode_config
.crtc_list
)
1755 list_for_each(lh
, &dev
->mode_config
.connector_list
)
1758 list_for_each(lh
, &dev
->mode_config
.encoder_list
)
1762 mode_group
= &file_priv
->master
->minor
->mode_group
;
1763 crtc_count
= mode_group
->num_crtcs
;
1764 connector_count
= mode_group
->num_connectors
;
1765 encoder_count
= mode_group
->num_encoders
;
1768 card_res
->max_height
= dev
->mode_config
.max_height
;
1769 card_res
->min_height
= dev
->mode_config
.min_height
;
1770 card_res
->max_width
= dev
->mode_config
.max_width
;
1771 card_res
->min_width
= dev
->mode_config
.min_width
;
1774 if (card_res
->count_crtcs
>= crtc_count
) {
1776 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1778 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
,
1780 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1781 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1788 for (i
= 0; i
< mode_group
->num_crtcs
; i
++) {
1789 if (put_user(mode_group
->id_list
[i
],
1790 crtc_id
+ copied
)) {
1798 card_res
->count_crtcs
= crtc_count
;
1801 if (card_res
->count_encoders
>= encoder_count
) {
1803 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1805 list_for_each_entry(encoder
,
1806 &dev
->mode_config
.encoder_list
,
1808 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1810 if (put_user(encoder
->base
.id
, encoder_id
+
1818 for (i
= mode_group
->num_crtcs
; i
< mode_group
->num_crtcs
+ mode_group
->num_encoders
; i
++) {
1819 if (put_user(mode_group
->id_list
[i
],
1820 encoder_id
+ copied
)) {
1829 card_res
->count_encoders
= encoder_count
;
1832 if (card_res
->count_connectors
>= connector_count
) {
1834 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1836 list_for_each_entry(connector
,
1837 &dev
->mode_config
.connector_list
,
1839 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1842 if (put_user(connector
->base
.id
,
1843 connector_id
+ copied
)) {
1850 int start
= mode_group
->num_crtcs
+
1851 mode_group
->num_encoders
;
1852 for (i
= start
; i
< start
+ mode_group
->num_connectors
; i
++) {
1853 if (put_user(mode_group
->id_list
[i
],
1854 connector_id
+ copied
)) {
1862 card_res
->count_connectors
= connector_count
;
1864 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1865 card_res
->count_connectors
, card_res
->count_encoders
);
1868 drm_modeset_unlock_all(dev
);
1873 * drm_mode_getcrtc - get CRTC configuration
1874 * @dev: drm device for the ioctl
1875 * @data: data pointer for the ioctl
1876 * @file_priv: drm file for the ioctl call
1878 * Construct a CRTC configuration structure to return to the user.
1880 * Called by the user via ioctl.
1883 * Zero on success, errno on failure.
1885 int drm_mode_getcrtc(struct drm_device
*dev
,
1886 void *data
, struct drm_file
*file_priv
)
1888 struct drm_mode_crtc
*crtc_resp
= data
;
1889 struct drm_crtc
*crtc
;
1892 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1895 drm_modeset_lock_all(dev
);
1897 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
1903 crtc_resp
->x
= crtc
->x
;
1904 crtc_resp
->y
= crtc
->y
;
1905 crtc_resp
->gamma_size
= crtc
->gamma_size
;
1906 if (crtc
->primary
->fb
)
1907 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
1909 crtc_resp
->fb_id
= 0;
1911 if (crtc
->enabled
) {
1913 drm_crtc_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
1914 crtc_resp
->mode_valid
= 1;
1917 crtc_resp
->mode_valid
= 0;
1921 drm_modeset_unlock_all(dev
);
1925 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1926 const struct drm_file
*file_priv
)
1929 * If user-space hasn't configured the driver to expose the stereo 3D
1930 * modes, don't expose them.
1932 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
1939 * drm_mode_getconnector - get connector configuration
1940 * @dev: drm device for the ioctl
1941 * @data: data pointer for the ioctl
1942 * @file_priv: drm file for the ioctl call
1944 * Construct a connector configuration structure to return to the user.
1946 * Called by the user via ioctl.
1949 * Zero on success, errno on failure.
1951 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
1952 struct drm_file
*file_priv
)
1954 struct drm_mode_get_connector
*out_resp
= data
;
1955 struct drm_connector
*connector
;
1956 struct drm_display_mode
*mode
;
1958 int props_count
= 0;
1959 int encoders_count
= 0;
1963 struct drm_mode_modeinfo u_mode
;
1964 struct drm_mode_modeinfo __user
*mode_ptr
;
1965 uint32_t __user
*prop_ptr
;
1966 uint64_t __user
*prop_values
;
1967 uint32_t __user
*encoder_ptr
;
1969 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1972 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
1974 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
1976 mutex_lock(&dev
->mode_config
.mutex
);
1978 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
1984 props_count
= connector
->properties
.count
;
1986 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
1987 if (connector
->encoder_ids
[i
] != 0) {
1992 if (out_resp
->count_modes
== 0) {
1993 connector
->funcs
->fill_modes(connector
,
1994 dev
->mode_config
.max_width
,
1995 dev
->mode_config
.max_height
);
1998 /* delayed so we get modes regardless of pre-fill_modes state */
1999 list_for_each_entry(mode
, &connector
->modes
, head
)
2000 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2003 out_resp
->connector_id
= connector
->base
.id
;
2004 out_resp
->connector_type
= connector
->connector_type
;
2005 out_resp
->connector_type_id
= connector
->connector_type_id
;
2006 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2007 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2008 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2009 out_resp
->connection
= connector
->status
;
2010 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2011 if (connector
->encoder
)
2012 out_resp
->encoder_id
= connector
->encoder
->base
.id
;
2014 out_resp
->encoder_id
= 0;
2015 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2018 * This ioctl is called twice, once to determine how much space is
2019 * needed, and the 2nd time to fill it.
2021 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2023 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2024 list_for_each_entry(mode
, &connector
->modes
, head
) {
2025 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2028 drm_crtc_convert_to_umode(&u_mode
, mode
);
2029 if (copy_to_user(mode_ptr
+ copied
,
2030 &u_mode
, sizeof(u_mode
))) {
2037 out_resp
->count_modes
= mode_count
;
2039 if ((out_resp
->count_props
>= props_count
) && props_count
) {
2041 prop_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
);
2042 prop_values
= (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
);
2043 for (i
= 0; i
< connector
->properties
.count
; i
++) {
2044 if (put_user(connector
->properties
.ids
[i
],
2045 prop_ptr
+ copied
)) {
2050 if (put_user(connector
->properties
.values
[i
],
2051 prop_values
+ copied
)) {
2058 out_resp
->count_props
= props_count
;
2060 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2062 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2063 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2064 if (connector
->encoder_ids
[i
] != 0) {
2065 if (put_user(connector
->encoder_ids
[i
],
2066 encoder_ptr
+ copied
)) {
2074 out_resp
->count_encoders
= encoders_count
;
2077 mutex_unlock(&dev
->mode_config
.mutex
);
2083 * drm_mode_getencoder - get encoder configuration
2084 * @dev: drm device for the ioctl
2085 * @data: data pointer for the ioctl
2086 * @file_priv: drm file for the ioctl call
2088 * Construct a encoder configuration structure to return to the user.
2090 * Called by the user via ioctl.
2093 * Zero on success, errno on failure.
2095 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2096 struct drm_file
*file_priv
)
2098 struct drm_mode_get_encoder
*enc_resp
= data
;
2099 struct drm_encoder
*encoder
;
2102 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2105 drm_modeset_lock_all(dev
);
2106 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2113 enc_resp
->crtc_id
= encoder
->crtc
->base
.id
;
2115 enc_resp
->crtc_id
= 0;
2116 enc_resp
->encoder_type
= encoder
->encoder_type
;
2117 enc_resp
->encoder_id
= encoder
->base
.id
;
2118 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2119 enc_resp
->possible_clones
= encoder
->possible_clones
;
2122 drm_modeset_unlock_all(dev
);
2127 * drm_mode_getplane_res - enumerate all plane resources
2130 * @file_priv: DRM file info
2132 * Construct a list of plane ids to return to the user.
2134 * Called by the user via ioctl.
2137 * Zero on success, errno on failure.
2139 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2140 struct drm_file
*file_priv
)
2142 struct drm_mode_get_plane_res
*plane_resp
= data
;
2143 struct drm_mode_config
*config
;
2144 struct drm_plane
*plane
;
2145 uint32_t __user
*plane_ptr
;
2146 int copied
= 0, ret
= 0;
2147 unsigned num_planes
;
2149 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2152 drm_modeset_lock_all(dev
);
2153 config
= &dev
->mode_config
;
2155 if (file_priv
->universal_planes
)
2156 num_planes
= config
->num_total_plane
;
2158 num_planes
= config
->num_overlay_plane
;
2161 * This ioctl is called twice, once to determine how much space is
2162 * needed, and the 2nd time to fill it.
2165 (plane_resp
->count_planes
>= num_planes
)) {
2166 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2168 list_for_each_entry(plane
, &config
->plane_list
, head
) {
2170 * Unless userspace set the 'universal planes'
2171 * capability bit, only advertise overlays.
2173 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2174 !file_priv
->universal_planes
)
2177 if (put_user(plane
->base
.id
, plane_ptr
+ copied
)) {
2184 plane_resp
->count_planes
= num_planes
;
2187 drm_modeset_unlock_all(dev
);
2192 * drm_mode_getplane - get plane configuration
2195 * @file_priv: DRM file info
2197 * Construct a plane configuration structure to return to the user.
2199 * Called by the user via ioctl.
2202 * Zero on success, errno on failure.
2204 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2205 struct drm_file
*file_priv
)
2207 struct drm_mode_get_plane
*plane_resp
= data
;
2208 struct drm_plane
*plane
;
2209 uint32_t __user
*format_ptr
;
2212 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2215 drm_modeset_lock_all(dev
);
2216 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2223 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2225 plane_resp
->crtc_id
= 0;
2228 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2230 plane_resp
->fb_id
= 0;
2232 plane_resp
->plane_id
= plane
->base
.id
;
2233 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2234 plane_resp
->gamma_size
= 0;
2237 * This ioctl is called twice, once to determine how much space is
2238 * needed, and the 2nd time to fill it.
2240 if (plane
->format_count
&&
2241 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2242 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2243 if (copy_to_user(format_ptr
,
2244 plane
->format_types
,
2245 sizeof(uint32_t) * plane
->format_count
)) {
2250 plane_resp
->count_format_types
= plane
->format_count
;
2253 drm_modeset_unlock_all(dev
);
2258 * setplane_internal - setplane handler for internal callers
2260 * Note that we assume an extra reference has already been taken on fb. If the
2261 * update fails, this reference will be dropped before return; if it succeeds,
2262 * the previous framebuffer (if any) will be unreferenced instead.
2264 * src_{x,y,w,h} are provided in 16.16 fixed point format
2266 static int __setplane_internal(struct drm_plane
*plane
,
2267 struct drm_crtc
*crtc
,
2268 struct drm_framebuffer
*fb
,
2269 int32_t crtc_x
, int32_t crtc_y
,
2270 uint32_t crtc_w
, uint32_t crtc_h
,
2271 /* src_{x,y,w,h} values are 16.16 fixed point */
2272 uint32_t src_x
, uint32_t src_y
,
2273 uint32_t src_w
, uint32_t src_h
)
2276 unsigned int fb_width
, fb_height
;
2279 /* No fb means shut it down */
2281 plane
->old_fb
= plane
->fb
;
2282 ret
= plane
->funcs
->disable_plane(plane
);
2287 plane
->old_fb
= NULL
;
2292 /* Check whether this plane is usable on this CRTC */
2293 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2294 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2299 /* Check whether this plane supports the fb pixel format. */
2300 for (i
= 0; i
< plane
->format_count
; i
++)
2301 if (fb
->pixel_format
== plane
->format_types
[i
])
2303 if (i
== plane
->format_count
) {
2304 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2305 drm_get_format_name(fb
->pixel_format
));
2310 fb_width
= fb
->width
<< 16;
2311 fb_height
= fb
->height
<< 16;
2313 /* Make sure source coordinates are inside the fb. */
2314 if (src_w
> fb_width
||
2315 src_x
> fb_width
- src_w
||
2316 src_h
> fb_height
||
2317 src_y
> fb_height
- src_h
) {
2318 DRM_DEBUG_KMS("Invalid source coordinates "
2319 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2320 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2321 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2322 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2323 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2328 plane
->old_fb
= plane
->fb
;
2329 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2330 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2331 src_x
, src_y
, src_w
, src_h
);
2337 plane
->old_fb
= NULL
;
2342 drm_framebuffer_unreference(fb
);
2344 drm_framebuffer_unreference(plane
->old_fb
);
2345 plane
->old_fb
= NULL
;
2350 static int setplane_internal(struct drm_plane
*plane
,
2351 struct drm_crtc
*crtc
,
2352 struct drm_framebuffer
*fb
,
2353 int32_t crtc_x
, int32_t crtc_y
,
2354 uint32_t crtc_w
, uint32_t crtc_h
,
2355 /* src_{x,y,w,h} values are 16.16 fixed point */
2356 uint32_t src_x
, uint32_t src_y
,
2357 uint32_t src_w
, uint32_t src_h
)
2361 drm_modeset_lock_all(plane
->dev
);
2362 ret
= __setplane_internal(plane
, crtc
, fb
,
2363 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2364 src_x
, src_y
, src_w
, src_h
);
2365 drm_modeset_unlock_all(plane
->dev
);
2371 * drm_mode_setplane - configure a plane's configuration
2373 * @data: ioctl data*
2374 * @file_priv: DRM file info
2376 * Set plane configuration, including placement, fb, scaling, and other factors.
2377 * Or pass a NULL fb to disable (planes may be disabled without providing a
2381 * Zero on success, errno on failure.
2383 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2384 struct drm_file
*file_priv
)
2386 struct drm_mode_set_plane
*plane_req
= data
;
2387 struct drm_mode_object
*obj
;
2388 struct drm_plane
*plane
;
2389 struct drm_crtc
*crtc
= NULL
;
2390 struct drm_framebuffer
*fb
= NULL
;
2392 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2395 /* Give drivers some help against integer overflows */
2396 if (plane_req
->crtc_w
> INT_MAX
||
2397 plane_req
->crtc_x
> INT_MAX
- (int32_t) plane_req
->crtc_w
||
2398 plane_req
->crtc_h
> INT_MAX
||
2399 plane_req
->crtc_y
> INT_MAX
- (int32_t) plane_req
->crtc_h
) {
2400 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2401 plane_req
->crtc_w
, plane_req
->crtc_h
,
2402 plane_req
->crtc_x
, plane_req
->crtc_y
);
2407 * First, find the plane, crtc, and fb objects. If not available,
2408 * we don't bother to call the driver.
2410 obj
= drm_mode_object_find(dev
, plane_req
->plane_id
,
2411 DRM_MODE_OBJECT_PLANE
);
2413 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2414 plane_req
->plane_id
);
2417 plane
= obj_to_plane(obj
);
2419 if (plane_req
->fb_id
) {
2420 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2422 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2427 obj
= drm_mode_object_find(dev
, plane_req
->crtc_id
,
2428 DRM_MODE_OBJECT_CRTC
);
2430 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2431 plane_req
->crtc_id
);
2434 crtc
= obj_to_crtc(obj
);
2438 * setplane_internal will take care of deref'ing either the old or new
2439 * framebuffer depending on success.
2441 return setplane_internal(plane
, crtc
, fb
,
2442 plane_req
->crtc_x
, plane_req
->crtc_y
,
2443 plane_req
->crtc_w
, plane_req
->crtc_h
,
2444 plane_req
->src_x
, plane_req
->src_y
,
2445 plane_req
->src_w
, plane_req
->src_h
);
2449 * drm_mode_set_config_internal - helper to call ->set_config
2450 * @set: modeset config to set
2452 * This is a little helper to wrap internal calls to the ->set_config driver
2453 * interface. The only thing it adds is correct refcounting dance.
2456 * Zero on success, errno on failure.
2458 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2460 struct drm_crtc
*crtc
= set
->crtc
;
2461 struct drm_framebuffer
*fb
;
2462 struct drm_crtc
*tmp
;
2466 * NOTE: ->set_config can also disable other crtcs (if we steal all
2467 * connectors from it), hence we need to refcount the fbs across all
2468 * crtcs. Atomic modeset will have saner semantics ...
2470 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
)
2471 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2475 ret
= crtc
->funcs
->set_config(set
);
2477 crtc
->primary
->crtc
= crtc
;
2478 crtc
->primary
->fb
= fb
;
2481 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
2482 if (tmp
->primary
->fb
)
2483 drm_framebuffer_reference(tmp
->primary
->fb
);
2484 if (tmp
->primary
->old_fb
)
2485 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2486 tmp
->primary
->old_fb
= NULL
;
2491 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2494 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2496 * @crtc: CRTC that framebuffer will be displayed on
2499 * @mode: mode that framebuffer will be displayed under
2500 * @fb: framebuffer to check size of
2502 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2504 const struct drm_display_mode
*mode
,
2505 const struct drm_framebuffer
*fb
)
2508 int hdisplay
, vdisplay
;
2510 hdisplay
= mode
->hdisplay
;
2511 vdisplay
= mode
->vdisplay
;
2513 if (drm_mode_is_stereo(mode
)) {
2514 struct drm_display_mode adjusted
= *mode
;
2516 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE
);
2517 hdisplay
= adjusted
.crtc_hdisplay
;
2518 vdisplay
= adjusted
.crtc_vdisplay
;
2521 if (crtc
->invert_dimensions
)
2522 swap(hdisplay
, vdisplay
);
2524 if (hdisplay
> fb
->width
||
2525 vdisplay
> fb
->height
||
2526 x
> fb
->width
- hdisplay
||
2527 y
> fb
->height
- vdisplay
) {
2528 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2529 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2530 crtc
->invert_dimensions
? " (inverted)" : "");
2536 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2539 * drm_mode_setcrtc - set CRTC configuration
2540 * @dev: drm device for the ioctl
2541 * @data: data pointer for the ioctl
2542 * @file_priv: drm file for the ioctl call
2544 * Build a new CRTC configuration based on user request.
2546 * Called by the user via ioctl.
2549 * Zero on success, errno on failure.
2551 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2552 struct drm_file
*file_priv
)
2554 struct drm_mode_config
*config
= &dev
->mode_config
;
2555 struct drm_mode_crtc
*crtc_req
= data
;
2556 struct drm_crtc
*crtc
;
2557 struct drm_connector
**connector_set
= NULL
, *connector
;
2558 struct drm_framebuffer
*fb
= NULL
;
2559 struct drm_display_mode
*mode
= NULL
;
2560 struct drm_mode_set set
;
2561 uint32_t __user
*set_connectors_ptr
;
2565 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2568 /* For some reason crtc x/y offsets are signed internally. */
2569 if (crtc_req
->x
> INT_MAX
|| crtc_req
->y
> INT_MAX
)
2572 drm_modeset_lock_all(dev
);
2573 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2575 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2579 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2581 if (crtc_req
->mode_valid
) {
2582 /* If we have a mode we need a framebuffer. */
2583 /* If we pass -1, set the mode with the currently bound fb */
2584 if (crtc_req
->fb_id
== -1) {
2585 if (!crtc
->primary
->fb
) {
2586 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2590 fb
= crtc
->primary
->fb
;
2591 /* Make refcounting symmetric with the lookup path. */
2592 drm_framebuffer_reference(fb
);
2594 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2596 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2603 mode
= drm_mode_create(dev
);
2609 ret
= drm_crtc_convert_umode(mode
, &crtc_req
->mode
);
2611 DRM_DEBUG_KMS("Invalid mode\n");
2615 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2617 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2624 if (crtc_req
->count_connectors
== 0 && mode
) {
2625 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2630 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2631 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2632 crtc_req
->count_connectors
);
2637 if (crtc_req
->count_connectors
> 0) {
2640 /* Avoid unbounded kernel memory allocation */
2641 if (crtc_req
->count_connectors
> config
->num_connector
) {
2646 connector_set
= kmalloc(crtc_req
->count_connectors
*
2647 sizeof(struct drm_connector
*),
2649 if (!connector_set
) {
2654 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2655 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2656 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2661 connector
= drm_connector_find(dev
, out_id
);
2663 DRM_DEBUG_KMS("Connector id %d unknown\n",
2668 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2672 connector_set
[i
] = connector
;
2677 set
.x
= crtc_req
->x
;
2678 set
.y
= crtc_req
->y
;
2680 set
.connectors
= connector_set
;
2681 set
.num_connectors
= crtc_req
->count_connectors
;
2683 ret
= drm_mode_set_config_internal(&set
);
2687 drm_framebuffer_unreference(fb
);
2689 kfree(connector_set
);
2690 drm_mode_destroy(dev
, mode
);
2691 drm_modeset_unlock_all(dev
);
2696 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2697 * universal plane handler call
2698 * @crtc: crtc to update cursor for
2699 * @req: data pointer for the ioctl
2700 * @file_priv: drm file for the ioctl call
2702 * Legacy cursor ioctl's work directly with driver buffer handles. To
2703 * translate legacy ioctl calls into universal plane handler calls, we need to
2704 * wrap the native buffer handle in a drm_framebuffer.
2706 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2707 * buffer with a pitch of 4*width; the universal plane interface should be used
2708 * directly in cases where the hardware can support other buffer settings and
2709 * userspace wants to make use of these capabilities.
2712 * Zero on success, errno on failure.
2714 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2715 struct drm_mode_cursor2
*req
,
2716 struct drm_file
*file_priv
)
2718 struct drm_device
*dev
= crtc
->dev
;
2719 struct drm_framebuffer
*fb
= NULL
;
2720 struct drm_mode_fb_cmd2 fbreq
= {
2721 .width
= req
->width
,
2722 .height
= req
->height
,
2723 .pixel_format
= DRM_FORMAT_ARGB8888
,
2724 .pitches
= { req
->width
* 4 },
2725 .handles
= { req
->handle
},
2727 int32_t crtc_x
, crtc_y
;
2728 uint32_t crtc_w
= 0, crtc_h
= 0;
2729 uint32_t src_w
= 0, src_h
= 0;
2732 BUG_ON(!crtc
->cursor
);
2733 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2736 * Obtain fb we'll be using (either new or existing) and take an extra
2737 * reference to it if fb != null. setplane will take care of dropping
2738 * the reference if the plane update fails.
2740 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2742 fb
= add_framebuffer_internal(dev
, &fbreq
, file_priv
);
2744 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2748 drm_framebuffer_reference(fb
);
2753 fb
= crtc
->cursor
->fb
;
2755 drm_framebuffer_reference(fb
);
2758 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2762 crtc_x
= crtc
->cursor_x
;
2763 crtc_y
= crtc
->cursor_y
;
2768 crtc_h
= fb
->height
;
2769 src_w
= fb
->width
<< 16;
2770 src_h
= fb
->height
<< 16;
2774 * setplane_internal will take care of deref'ing either the old or new
2775 * framebuffer depending on success.
2777 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2778 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2779 0, 0, src_w
, src_h
);
2781 /* Update successful; save new cursor position, if necessary */
2782 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2783 crtc
->cursor_x
= req
->x
;
2784 crtc
->cursor_y
= req
->y
;
2790 static int drm_mode_cursor_common(struct drm_device
*dev
,
2791 struct drm_mode_cursor2
*req
,
2792 struct drm_file
*file_priv
)
2794 struct drm_crtc
*crtc
;
2797 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2800 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2803 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2805 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2810 * If this crtc has a universal cursor plane, call that plane's update
2811 * handler rather than using legacy cursor handlers.
2813 drm_modeset_lock_crtc(crtc
);
2815 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2819 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2820 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2824 /* Turns off the cursor if handle is 0 */
2825 if (crtc
->funcs
->cursor_set2
)
2826 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2827 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2829 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2830 req
->width
, req
->height
);
2833 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2834 if (crtc
->funcs
->cursor_move
) {
2835 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
2842 drm_modeset_unlock_crtc(crtc
);
2850 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2851 * @dev: drm device for the ioctl
2852 * @data: data pointer for the ioctl
2853 * @file_priv: drm file for the ioctl call
2855 * Set the cursor configuration based on user request.
2857 * Called by the user via ioctl.
2860 * Zero on success, errno on failure.
2862 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
2863 void *data
, struct drm_file
*file_priv
)
2865 struct drm_mode_cursor
*req
= data
;
2866 struct drm_mode_cursor2 new_req
;
2868 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
2869 new_req
.hot_x
= new_req
.hot_y
= 0;
2871 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
2875 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2876 * @dev: drm device for the ioctl
2877 * @data: data pointer for the ioctl
2878 * @file_priv: drm file for the ioctl call
2880 * Set the cursor configuration based on user request. This implements the 2nd
2881 * version of the cursor ioctl, which allows userspace to additionally specify
2882 * the hotspot of the pointer.
2884 * Called by the user via ioctl.
2887 * Zero on success, errno on failure.
2889 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
2890 void *data
, struct drm_file
*file_priv
)
2892 struct drm_mode_cursor2
*req
= data
;
2893 return drm_mode_cursor_common(dev
, req
, file_priv
);
2897 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2898 * @bpp: bits per pixels
2899 * @depth: bit depth per pixel
2901 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2902 * Useful in fbdev emulation code, since that deals in those values.
2904 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
2910 fmt
= DRM_FORMAT_C8
;
2914 fmt
= DRM_FORMAT_XRGB1555
;
2916 fmt
= DRM_FORMAT_RGB565
;
2919 fmt
= DRM_FORMAT_RGB888
;
2923 fmt
= DRM_FORMAT_XRGB8888
;
2924 else if (depth
== 30)
2925 fmt
= DRM_FORMAT_XRGB2101010
;
2927 fmt
= DRM_FORMAT_ARGB8888
;
2930 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2931 fmt
= DRM_FORMAT_XRGB8888
;
2937 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
2940 * drm_mode_addfb - add an FB to the graphics configuration
2941 * @dev: drm device for the ioctl
2942 * @data: data pointer for the ioctl
2943 * @file_priv: drm file for the ioctl call
2945 * Add a new FB to the specified CRTC, given a user request. This is the
2946 * original addfb ioclt which only supported RGB formats.
2948 * Called by the user via ioctl.
2951 * Zero on success, errno on failure.
2953 int drm_mode_addfb(struct drm_device
*dev
,
2954 void *data
, struct drm_file
*file_priv
)
2956 struct drm_mode_fb_cmd
*or = data
;
2957 struct drm_mode_fb_cmd2 r
= {};
2958 struct drm_mode_config
*config
= &dev
->mode_config
;
2959 struct drm_framebuffer
*fb
;
2962 /* Use new struct with format internally */
2963 r
.fb_id
= or->fb_id
;
2964 r
.width
= or->width
;
2965 r
.height
= or->height
;
2966 r
.pitches
[0] = or->pitch
;
2967 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
2968 r
.handles
[0] = or->handle
;
2970 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2973 if ((config
->min_width
> r
.width
) || (r
.width
> config
->max_width
))
2976 if ((config
->min_height
> r
.height
) || (r
.height
> config
->max_height
))
2979 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, &r
);
2981 DRM_DEBUG_KMS("could not create framebuffer\n");
2985 mutex_lock(&file_priv
->fbs_lock
);
2986 or->fb_id
= fb
->base
.id
;
2987 list_add(&fb
->filp_head
, &file_priv
->fbs
);
2988 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
2989 mutex_unlock(&file_priv
->fbs_lock
);
2994 static int format_check(const struct drm_mode_fb_cmd2
*r
)
2996 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3000 case DRM_FORMAT_RGB332
:
3001 case DRM_FORMAT_BGR233
:
3002 case DRM_FORMAT_XRGB4444
:
3003 case DRM_FORMAT_XBGR4444
:
3004 case DRM_FORMAT_RGBX4444
:
3005 case DRM_FORMAT_BGRX4444
:
3006 case DRM_FORMAT_ARGB4444
:
3007 case DRM_FORMAT_ABGR4444
:
3008 case DRM_FORMAT_RGBA4444
:
3009 case DRM_FORMAT_BGRA4444
:
3010 case DRM_FORMAT_XRGB1555
:
3011 case DRM_FORMAT_XBGR1555
:
3012 case DRM_FORMAT_RGBX5551
:
3013 case DRM_FORMAT_BGRX5551
:
3014 case DRM_FORMAT_ARGB1555
:
3015 case DRM_FORMAT_ABGR1555
:
3016 case DRM_FORMAT_RGBA5551
:
3017 case DRM_FORMAT_BGRA5551
:
3018 case DRM_FORMAT_RGB565
:
3019 case DRM_FORMAT_BGR565
:
3020 case DRM_FORMAT_RGB888
:
3021 case DRM_FORMAT_BGR888
:
3022 case DRM_FORMAT_XRGB8888
:
3023 case DRM_FORMAT_XBGR8888
:
3024 case DRM_FORMAT_RGBX8888
:
3025 case DRM_FORMAT_BGRX8888
:
3026 case DRM_FORMAT_ARGB8888
:
3027 case DRM_FORMAT_ABGR8888
:
3028 case DRM_FORMAT_RGBA8888
:
3029 case DRM_FORMAT_BGRA8888
:
3030 case DRM_FORMAT_XRGB2101010
:
3031 case DRM_FORMAT_XBGR2101010
:
3032 case DRM_FORMAT_RGBX1010102
:
3033 case DRM_FORMAT_BGRX1010102
:
3034 case DRM_FORMAT_ARGB2101010
:
3035 case DRM_FORMAT_ABGR2101010
:
3036 case DRM_FORMAT_RGBA1010102
:
3037 case DRM_FORMAT_BGRA1010102
:
3038 case DRM_FORMAT_YUYV
:
3039 case DRM_FORMAT_YVYU
:
3040 case DRM_FORMAT_UYVY
:
3041 case DRM_FORMAT_VYUY
:
3042 case DRM_FORMAT_AYUV
:
3043 case DRM_FORMAT_NV12
:
3044 case DRM_FORMAT_NV21
:
3045 case DRM_FORMAT_NV16
:
3046 case DRM_FORMAT_NV61
:
3047 case DRM_FORMAT_NV24
:
3048 case DRM_FORMAT_NV42
:
3049 case DRM_FORMAT_YUV410
:
3050 case DRM_FORMAT_YVU410
:
3051 case DRM_FORMAT_YUV411
:
3052 case DRM_FORMAT_YVU411
:
3053 case DRM_FORMAT_YUV420
:
3054 case DRM_FORMAT_YVU420
:
3055 case DRM_FORMAT_YUV422
:
3056 case DRM_FORMAT_YVU422
:
3057 case DRM_FORMAT_YUV444
:
3058 case DRM_FORMAT_YVU444
:
3061 DRM_DEBUG_KMS("invalid pixel format %s\n",
3062 drm_get_format_name(r
->pixel_format
));
3067 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3069 int ret
, hsub
, vsub
, num_planes
, i
;
3071 ret
= format_check(r
);
3073 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3074 drm_get_format_name(r
->pixel_format
));
3078 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3079 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3080 num_planes
= drm_format_num_planes(r
->pixel_format
);
3082 if (r
->width
== 0 || r
->width
% hsub
) {
3083 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->height
);
3087 if (r
->height
== 0 || r
->height
% vsub
) {
3088 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3092 for (i
= 0; i
< num_planes
; i
++) {
3093 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3094 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3095 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3097 if (!r
->handles
[i
]) {
3098 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3102 if ((uint64_t) width
* cpp
> UINT_MAX
)
3105 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3108 if (r
->pitches
[i
] < width
* cpp
) {
3109 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3117 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
3118 struct drm_mode_fb_cmd2
*r
,
3119 struct drm_file
*file_priv
)
3121 struct drm_mode_config
*config
= &dev
->mode_config
;
3122 struct drm_framebuffer
*fb
;
3125 if (r
->flags
& ~DRM_MODE_FB_INTERLACED
) {
3126 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3127 return ERR_PTR(-EINVAL
);
3130 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3131 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3132 r
->width
, config
->min_width
, config
->max_width
);
3133 return ERR_PTR(-EINVAL
);
3135 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3136 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3137 r
->height
, config
->min_height
, config
->max_height
);
3138 return ERR_PTR(-EINVAL
);
3141 ret
= framebuffer_check(r
);
3143 return ERR_PTR(ret
);
3145 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3147 DRM_DEBUG_KMS("could not create framebuffer\n");
3151 mutex_lock(&file_priv
->fbs_lock
);
3152 r
->fb_id
= fb
->base
.id
;
3153 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3154 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3155 mutex_unlock(&file_priv
->fbs_lock
);
3161 * drm_mode_addfb2 - add an FB to the graphics configuration
3162 * @dev: drm device for the ioctl
3163 * @data: data pointer for the ioctl
3164 * @file_priv: drm file for the ioctl call
3166 * Add a new FB to the specified CRTC, given a user request with format. This is
3167 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3168 * and uses fourcc codes as pixel format specifiers.
3170 * Called by the user via ioctl.
3173 * Zero on success, errno on failure.
3175 int drm_mode_addfb2(struct drm_device
*dev
,
3176 void *data
, struct drm_file
*file_priv
)
3178 struct drm_framebuffer
*fb
;
3180 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3183 fb
= add_framebuffer_internal(dev
, data
, file_priv
);
3191 * drm_mode_rmfb - remove an FB from the configuration
3192 * @dev: drm device for the ioctl
3193 * @data: data pointer for the ioctl
3194 * @file_priv: drm file for the ioctl call
3196 * Remove the FB specified by the user.
3198 * Called by the user via ioctl.
3201 * Zero on success, errno on failure.
3203 int drm_mode_rmfb(struct drm_device
*dev
,
3204 void *data
, struct drm_file
*file_priv
)
3206 struct drm_framebuffer
*fb
= NULL
;
3207 struct drm_framebuffer
*fbl
= NULL
;
3208 uint32_t *id
= data
;
3211 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3214 mutex_lock(&file_priv
->fbs_lock
);
3215 mutex_lock(&dev
->mode_config
.fb_lock
);
3216 fb
= __drm_framebuffer_lookup(dev
, *id
);
3220 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3226 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3227 __drm_framebuffer_unregister(dev
, fb
);
3229 list_del_init(&fb
->filp_head
);
3230 mutex_unlock(&dev
->mode_config
.fb_lock
);
3231 mutex_unlock(&file_priv
->fbs_lock
);
3233 drm_framebuffer_remove(fb
);
3238 mutex_unlock(&dev
->mode_config
.fb_lock
);
3239 mutex_unlock(&file_priv
->fbs_lock
);
3245 * drm_mode_getfb - get FB info
3246 * @dev: drm device for the ioctl
3247 * @data: data pointer for the ioctl
3248 * @file_priv: drm file for the ioctl call
3250 * Lookup the FB given its ID and return info about it.
3252 * Called by the user via ioctl.
3255 * Zero on success, errno on failure.
3257 int drm_mode_getfb(struct drm_device
*dev
,
3258 void *data
, struct drm_file
*file_priv
)
3260 struct drm_mode_fb_cmd
*r
= data
;
3261 struct drm_framebuffer
*fb
;
3264 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3267 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3271 r
->height
= fb
->height
;
3272 r
->width
= fb
->width
;
3273 r
->depth
= fb
->depth
;
3274 r
->bpp
= fb
->bits_per_pixel
;
3275 r
->pitch
= fb
->pitches
[0];
3276 if (fb
->funcs
->create_handle
) {
3277 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3278 drm_is_control_client(file_priv
)) {
3279 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3282 /* GET_FB() is an unprivileged ioctl so we must not
3283 * return a buffer-handle to non-master processes! For
3284 * backwards-compatibility reasons, we cannot make
3285 * GET_FB() privileged, so just return an invalid handle
3286 * for non-masters. */
3294 drm_framebuffer_unreference(fb
);
3300 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3301 * @dev: drm device for the ioctl
3302 * @data: data pointer for the ioctl
3303 * @file_priv: drm file for the ioctl call
3305 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3306 * rectangle list. Generic userspace which does frontbuffer rendering must call
3307 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3308 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3310 * Modesetting drivers which always update the frontbuffer do not need to
3311 * implement the corresponding ->dirty framebuffer callback.
3313 * Called by the user via ioctl.
3316 * Zero on success, errno on failure.
3318 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3319 void *data
, struct drm_file
*file_priv
)
3321 struct drm_clip_rect __user
*clips_ptr
;
3322 struct drm_clip_rect
*clips
= NULL
;
3323 struct drm_mode_fb_dirty_cmd
*r
= data
;
3324 struct drm_framebuffer
*fb
;
3329 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3332 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3336 num_clips
= r
->num_clips
;
3337 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3339 if (!num_clips
!= !clips_ptr
) {
3344 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3346 /* If userspace annotates copy, clips must come in pairs */
3347 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3352 if (num_clips
&& clips_ptr
) {
3353 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3357 clips
= kzalloc(num_clips
* sizeof(*clips
), GFP_KERNEL
);
3363 ret
= copy_from_user(clips
, clips_ptr
,
3364 num_clips
* sizeof(*clips
));
3371 if (fb
->funcs
->dirty
) {
3372 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3381 drm_framebuffer_unreference(fb
);
3388 * drm_fb_release - remove and free the FBs on this file
3389 * @priv: drm file for the ioctl
3391 * Destroy all the FBs associated with @filp.
3393 * Called by the user via ioctl.
3396 * Zero on success, errno on failure.
3398 void drm_fb_release(struct drm_file
*priv
)
3400 struct drm_device
*dev
= priv
->minor
->dev
;
3401 struct drm_framebuffer
*fb
, *tfb
;
3404 * When the file gets released that means no one else can access the fb
3405 * list any more, so no need to grab fpriv->fbs_lock. And we need to to
3406 * avoid upsetting lockdep since the universal cursor code adds a
3407 * framebuffer while holding mutex locks.
3409 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3410 * locks is impossible here since no one else but this function can get
3413 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3415 mutex_lock(&dev
->mode_config
.fb_lock
);
3416 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3417 __drm_framebuffer_unregister(dev
, fb
);
3418 mutex_unlock(&dev
->mode_config
.fb_lock
);
3420 list_del_init(&fb
->filp_head
);
3422 /* This will also drop the fpriv->fbs reference. */
3423 drm_framebuffer_remove(fb
);
3428 * drm_property_create - create a new property type
3430 * @flags: flags specifying the property type
3431 * @name: name of the property
3432 * @num_values: number of pre-defined values
3434 * This creates a new generic drm property which can then be attached to a drm
3435 * object with drm_object_attach_property. The returned property object must be
3436 * freed with drm_property_destroy.
3439 * A pointer to the newly created property on success, NULL on failure.
3441 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3442 const char *name
, int num_values
)
3444 struct drm_property
*property
= NULL
;
3447 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3451 property
->dev
= dev
;
3454 property
->values
= kzalloc(sizeof(uint64_t)*num_values
, GFP_KERNEL
);
3455 if (!property
->values
)
3459 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3463 property
->flags
= flags
;
3464 property
->num_values
= num_values
;
3465 INIT_LIST_HEAD(&property
->enum_blob_list
);
3468 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3469 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3472 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3474 WARN_ON(!drm_property_type_valid(property
));
3478 kfree(property
->values
);
3482 EXPORT_SYMBOL(drm_property_create
);
3485 * drm_property_create_enum - create a new enumeration property type
3487 * @flags: flags specifying the property type
3488 * @name: name of the property
3489 * @props: enumeration lists with property values
3490 * @num_values: number of pre-defined values
3492 * This creates a new generic drm property which can then be attached to a drm
3493 * object with drm_object_attach_property. The returned property object must be
3494 * freed with drm_property_destroy.
3496 * Userspace is only allowed to set one of the predefined values for enumeration
3500 * A pointer to the newly created property on success, NULL on failure.
3502 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3504 const struct drm_prop_enum_list
*props
,
3507 struct drm_property
*property
;
3510 flags
|= DRM_MODE_PROP_ENUM
;
3512 property
= drm_property_create(dev
, flags
, name
, num_values
);
3516 for (i
= 0; i
< num_values
; i
++) {
3517 ret
= drm_property_add_enum(property
, i
,
3521 drm_property_destroy(dev
, property
);
3528 EXPORT_SYMBOL(drm_property_create_enum
);
3531 * drm_property_create_bitmask - create a new bitmask property type
3533 * @flags: flags specifying the property type
3534 * @name: name of the property
3535 * @props: enumeration lists with property bitflags
3536 * @num_props: size of the @props array
3537 * @supported_bits: bitmask of all supported enumeration values
3539 * This creates a new bitmask drm property which can then be attached to a drm
3540 * object with drm_object_attach_property. The returned property object must be
3541 * freed with drm_property_destroy.
3543 * Compared to plain enumeration properties userspace is allowed to set any
3544 * or'ed together combination of the predefined property bitflag values
3547 * A pointer to the newly created property on success, NULL on failure.
3549 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3550 int flags
, const char *name
,
3551 const struct drm_prop_enum_list
*props
,
3553 uint64_t supported_bits
)
3555 struct drm_property
*property
;
3556 int i
, ret
, index
= 0;
3557 int num_values
= hweight64(supported_bits
);
3559 flags
|= DRM_MODE_PROP_BITMASK
;
3561 property
= drm_property_create(dev
, flags
, name
, num_values
);
3564 for (i
= 0; i
< num_props
; i
++) {
3565 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3568 if (WARN_ON(index
>= num_values
)) {
3569 drm_property_destroy(dev
, property
);
3573 ret
= drm_property_add_enum(property
, index
++,
3577 drm_property_destroy(dev
, property
);
3584 EXPORT_SYMBOL(drm_property_create_bitmask
);
3586 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3587 int flags
, const char *name
,
3588 uint64_t min
, uint64_t max
)
3590 struct drm_property
*property
;
3592 property
= drm_property_create(dev
, flags
, name
, 2);
3596 property
->values
[0] = min
;
3597 property
->values
[1] = max
;
3603 * drm_property_create_range - create a new ranged property type
3605 * @flags: flags specifying the property type
3606 * @name: name of the property
3607 * @min: minimum value of the property
3608 * @max: maximum value of the property
3610 * This creates a new generic drm property which can then be attached to a drm
3611 * object with drm_object_attach_property. The returned property object must be
3612 * freed with drm_property_destroy.
3614 * Userspace is allowed to set any interger value in the (min, max) range
3618 * A pointer to the newly created property on success, NULL on failure.
3620 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3622 uint64_t min
, uint64_t max
)
3624 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3627 EXPORT_SYMBOL(drm_property_create_range
);
3629 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3630 int flags
, const char *name
,
3631 int64_t min
, int64_t max
)
3633 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3634 name
, I642U64(min
), I642U64(max
));
3636 EXPORT_SYMBOL(drm_property_create_signed_range
);
3638 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3639 int flags
, const char *name
, uint32_t type
)
3641 struct drm_property
*property
;
3643 flags
|= DRM_MODE_PROP_OBJECT
;
3645 property
= drm_property_create(dev
, flags
, name
, 1);
3649 property
->values
[0] = type
;
3653 EXPORT_SYMBOL(drm_property_create_object
);
3656 * drm_property_add_enum - add a possible value to an enumeration property
3657 * @property: enumeration property to change
3658 * @index: index of the new enumeration
3659 * @value: value of the new enumeration
3660 * @name: symbolic name of the new enumeration
3662 * This functions adds enumerations to a property.
3664 * It's use is deprecated, drivers should use one of the more specific helpers
3665 * to directly create the property with all enumerations already attached.
3668 * Zero on success, error code on failure.
3670 int drm_property_add_enum(struct drm_property
*property
, int index
,
3671 uint64_t value
, const char *name
)
3673 struct drm_property_enum
*prop_enum
;
3675 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3676 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3680 * Bitmask enum properties have the additional constraint of values
3683 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3687 if (!list_empty(&property
->enum_blob_list
)) {
3688 list_for_each_entry(prop_enum
, &property
->enum_blob_list
, head
) {
3689 if (prop_enum
->value
== value
) {
3690 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3691 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3697 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3701 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3702 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3703 prop_enum
->value
= value
;
3705 property
->values
[index
] = value
;
3706 list_add_tail(&prop_enum
->head
, &property
->enum_blob_list
);
3709 EXPORT_SYMBOL(drm_property_add_enum
);
3712 * drm_property_destroy - destroy a drm property
3714 * @property: property to destry
3716 * This function frees a property including any attached resources like
3717 * enumeration values.
3719 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3721 struct drm_property_enum
*prop_enum
, *pt
;
3723 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_blob_list
, head
) {
3724 list_del(&prop_enum
->head
);
3728 if (property
->num_values
)
3729 kfree(property
->values
);
3730 drm_mode_object_put(dev
, &property
->base
);
3731 list_del(&property
->head
);
3734 EXPORT_SYMBOL(drm_property_destroy
);
3737 * drm_object_attach_property - attach a property to a modeset object
3738 * @obj: drm modeset object
3739 * @property: property to attach
3740 * @init_val: initial value of the property
3742 * This attaches the given property to the modeset object with the given initial
3743 * value. Currently this function cannot fail since the properties are stored in
3744 * a statically sized array.
3746 void drm_object_attach_property(struct drm_mode_object
*obj
,
3747 struct drm_property
*property
,
3750 int count
= obj
->properties
->count
;
3752 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3753 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3754 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3755 "you see this message on the same object type.\n",
3760 obj
->properties
->ids
[count
] = property
->base
.id
;
3761 obj
->properties
->values
[count
] = init_val
;
3762 obj
->properties
->count
++;
3764 EXPORT_SYMBOL(drm_object_attach_property
);
3767 * drm_object_property_set_value - set the value of a property
3768 * @obj: drm mode object to set property value for
3769 * @property: property to set
3770 * @val: value the property should be set to
3772 * This functions sets a given property on a given object. This function only
3773 * changes the software state of the property, it does not call into the
3774 * driver's ->set_property callback.
3777 * Zero on success, error code on failure.
3779 int drm_object_property_set_value(struct drm_mode_object
*obj
,
3780 struct drm_property
*property
, uint64_t val
)
3784 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3785 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3786 obj
->properties
->values
[i
] = val
;
3793 EXPORT_SYMBOL(drm_object_property_set_value
);
3796 * drm_object_property_get_value - retrieve the value of a property
3797 * @obj: drm mode object to get property value from
3798 * @property: property to retrieve
3799 * @val: storage for the property value
3801 * This function retrieves the softare state of the given property for the given
3802 * property. Since there is no driver callback to retrieve the current property
3803 * value this might be out of sync with the hardware, depending upon the driver
3807 * Zero on success, error code on failure.
3809 int drm_object_property_get_value(struct drm_mode_object
*obj
,
3810 struct drm_property
*property
, uint64_t *val
)
3814 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3815 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3816 *val
= obj
->properties
->values
[i
];
3823 EXPORT_SYMBOL(drm_object_property_get_value
);
3826 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3829 * @file_priv: DRM file info
3831 * This function retrieves the current value for an connectors's property.
3833 * Called by the user via ioctl.
3836 * Zero on success, errno on failure.
3838 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
3839 void *data
, struct drm_file
*file_priv
)
3841 struct drm_mode_get_property
*out_resp
= data
;
3842 struct drm_property
*property
;
3845 int value_count
= 0;
3848 struct drm_property_enum
*prop_enum
;
3849 struct drm_mode_property_enum __user
*enum_ptr
;
3850 struct drm_property_blob
*prop_blob
;
3851 uint32_t __user
*blob_id_ptr
;
3852 uint64_t __user
*values_ptr
;
3853 uint32_t __user
*blob_length_ptr
;
3855 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3858 drm_modeset_lock_all(dev
);
3859 property
= drm_property_find(dev
, out_resp
->prop_id
);
3865 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3866 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3867 list_for_each_entry(prop_enum
, &property
->enum_blob_list
, head
)
3869 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
3870 list_for_each_entry(prop_blob
, &property
->enum_blob_list
, head
)
3874 value_count
= property
->num_values
;
3876 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
3877 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
3878 out_resp
->flags
= property
->flags
;
3880 if ((out_resp
->count_values
>= value_count
) && value_count
) {
3881 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
3882 for (i
= 0; i
< value_count
; i
++) {
3883 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
3889 out_resp
->count_values
= value_count
;
3891 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3892 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3893 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
3895 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
3896 list_for_each_entry(prop_enum
, &property
->enum_blob_list
, head
) {
3898 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
3903 if (copy_to_user(&enum_ptr
[copied
].name
,
3904 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
3911 out_resp
->count_enum_blobs
= enum_count
;
3914 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
3915 if ((out_resp
->count_enum_blobs
>= blob_count
) && blob_count
) {
3917 blob_id_ptr
= (uint32_t __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
3918 blob_length_ptr
= (uint32_t __user
*)(unsigned long)out_resp
->values_ptr
;
3920 list_for_each_entry(prop_blob
, &property
->enum_blob_list
, head
) {
3921 if (put_user(prop_blob
->base
.id
, blob_id_ptr
+ copied
)) {
3926 if (put_user(prop_blob
->length
, blob_length_ptr
+ copied
)) {
3934 out_resp
->count_enum_blobs
= blob_count
;
3937 drm_modeset_unlock_all(dev
);
3941 static struct drm_property_blob
*drm_property_create_blob(struct drm_device
*dev
, int length
,
3944 struct drm_property_blob
*blob
;
3947 if (!length
|| !data
)
3950 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
3954 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
3960 blob
->length
= length
;
3962 memcpy(blob
->data
, data
, length
);
3964 list_add_tail(&blob
->head
, &dev
->mode_config
.property_blob_list
);
3968 static void drm_property_destroy_blob(struct drm_device
*dev
,
3969 struct drm_property_blob
*blob
)
3971 drm_mode_object_put(dev
, &blob
->base
);
3972 list_del(&blob
->head
);
3977 * drm_mode_getblob_ioctl - get the contents of a blob property value
3980 * @file_priv: DRM file info
3982 * This function retrieves the contents of a blob property. The value stored in
3983 * an object's blob property is just a normal modeset object id.
3985 * Called by the user via ioctl.
3988 * Zero on success, errno on failure.
3990 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
3991 void *data
, struct drm_file
*file_priv
)
3993 struct drm_mode_get_blob
*out_resp
= data
;
3994 struct drm_property_blob
*blob
;
3996 void __user
*blob_ptr
;
3998 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4001 drm_modeset_lock_all(dev
);
4002 blob
= drm_property_blob_find(dev
, out_resp
->blob_id
);
4008 if (out_resp
->length
== blob
->length
) {
4009 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4010 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)){
4015 out_resp
->length
= blob
->length
;
4018 drm_modeset_unlock_all(dev
);
4022 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4025 struct drm_device
*dev
= connector
->dev
;
4027 size
= strlen(path
) + 1;
4029 connector
->path_blob_ptr
= drm_property_create_blob(connector
->dev
,
4031 if (!connector
->path_blob_ptr
)
4034 ret
= drm_object_property_set_value(&connector
->base
,
4035 dev
->mode_config
.path_property
,
4036 connector
->path_blob_ptr
->base
.id
);
4039 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4042 * drm_mode_connector_update_edid_property - update the edid property of a connector
4043 * @connector: drm connector
4044 * @edid: new value of the edid property
4046 * This function creates a new blob modeset object and assigns its id to the
4047 * connector's edid property.
4050 * Zero on success, errno on failure.
4052 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4055 struct drm_device
*dev
= connector
->dev
;
4058 /* ignore requests to set edid when overridden */
4059 if (connector
->override_edid
)
4062 if (connector
->edid_blob_ptr
)
4063 drm_property_destroy_blob(dev
, connector
->edid_blob_ptr
);
4065 /* Delete edid, when there is none. */
4067 connector
->edid_blob_ptr
= NULL
;
4068 ret
= drm_object_property_set_value(&connector
->base
, dev
->mode_config
.edid_property
, 0);
4072 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4073 connector
->edid_blob_ptr
= drm_property_create_blob(connector
->dev
,
4075 if (!connector
->edid_blob_ptr
)
4078 ret
= drm_object_property_set_value(&connector
->base
,
4079 dev
->mode_config
.edid_property
,
4080 connector
->edid_blob_ptr
->base
.id
);
4084 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4086 static bool drm_property_change_is_valid(struct drm_property
*property
,
4089 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4092 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4093 if (value
< property
->values
[0] || value
> property
->values
[1])
4096 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4097 int64_t svalue
= U642I64(value
);
4098 if (svalue
< U642I64(property
->values
[0]) ||
4099 svalue
> U642I64(property
->values
[1]))
4102 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4104 uint64_t valid_mask
= 0;
4105 for (i
= 0; i
< property
->num_values
; i
++)
4106 valid_mask
|= (1ULL << property
->values
[i
]);
4107 return !(value
& ~valid_mask
);
4108 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4109 /* Only the driver knows */
4111 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4112 struct drm_mode_object
*obj
;
4113 /* a zero value for an object property translates to null: */
4117 * NOTE: use _object_find() directly to bypass restriction on
4118 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4119 * object this could race against object finalization, so it
4120 * simply tells us that the object *was* valid. Which is good
4123 obj
= _object_find(property
->dev
, value
, property
->values
[0]);
4127 for (i
= 0; i
< property
->num_values
; i
++)
4128 if (property
->values
[i
] == value
)
4135 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4138 * @file_priv: DRM file info
4140 * This function sets the current value for a connectors's property. It also
4141 * calls into a driver's ->set_property callback to update the hardware state
4143 * Called by the user via ioctl.
4146 * Zero on success, errno on failure.
4148 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4149 void *data
, struct drm_file
*file_priv
)
4151 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4152 struct drm_mode_obj_set_property obj_set_prop
= {
4153 .value
= conn_set_prop
->value
,
4154 .prop_id
= conn_set_prop
->prop_id
,
4155 .obj_id
= conn_set_prop
->connector_id
,
4156 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4159 /* It does all the locking and checking we need */
4160 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4163 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4164 struct drm_property
*property
,
4168 struct drm_connector
*connector
= obj_to_connector(obj
);
4170 /* Do DPMS ourselves */
4171 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4172 if (connector
->funcs
->dpms
)
4173 (*connector
->funcs
->dpms
)(connector
, (int)value
);
4175 } else if (connector
->funcs
->set_property
)
4176 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4178 /* store the property value if successful */
4180 drm_object_property_set_value(&connector
->base
, property
, value
);
4184 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4185 struct drm_property
*property
,
4189 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4191 if (crtc
->funcs
->set_property
)
4192 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4194 drm_object_property_set_value(obj
, property
, value
);
4200 * drm_mode_plane_set_obj_prop - set the value of a property
4201 * @plane: drm plane object to set property value for
4202 * @property: property to set
4203 * @value: value the property should be set to
4205 * This functions sets a given property on a given plane object. This function
4206 * calls the driver's ->set_property callback and changes the software state of
4207 * the property if the callback succeeds.
4210 * Zero on success, error code on failure.
4212 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4213 struct drm_property
*property
,
4217 struct drm_mode_object
*obj
= &plane
->base
;
4219 if (plane
->funcs
->set_property
)
4220 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4222 drm_object_property_set_value(obj
, property
, value
);
4226 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4229 * drm_mode_getproperty_ioctl - get the current value of a object's property
4232 * @file_priv: DRM file info
4234 * This function retrieves the current value for an object's property. Compared
4235 * to the connector specific ioctl this one is extended to also work on crtc and
4238 * Called by the user via ioctl.
4241 * Zero on success, errno on failure.
4243 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4244 struct drm_file
*file_priv
)
4246 struct drm_mode_obj_get_properties
*arg
= data
;
4247 struct drm_mode_object
*obj
;
4251 int props_count
= 0;
4252 uint32_t __user
*props_ptr
;
4253 uint64_t __user
*prop_values_ptr
;
4255 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4258 drm_modeset_lock_all(dev
);
4260 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4265 if (!obj
->properties
) {
4270 props_count
= obj
->properties
->count
;
4272 /* This ioctl is called twice, once to determine how much space is
4273 * needed, and the 2nd time to fill it. */
4274 if ((arg
->count_props
>= props_count
) && props_count
) {
4276 props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->props_ptr
);
4277 prop_values_ptr
= (uint64_t __user
*)(unsigned long)
4278 (arg
->prop_values_ptr
);
4279 for (i
= 0; i
< props_count
; i
++) {
4280 if (put_user(obj
->properties
->ids
[i
],
4281 props_ptr
+ copied
)) {
4285 if (put_user(obj
->properties
->values
[i
],
4286 prop_values_ptr
+ copied
)) {
4293 arg
->count_props
= props_count
;
4295 drm_modeset_unlock_all(dev
);
4300 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4303 * @file_priv: DRM file info
4305 * This function sets the current value for an object's property. It also calls
4306 * into a driver's ->set_property callback to update the hardware state.
4307 * Compared to the connector specific ioctl this one is extended to also work on
4308 * crtc and plane objects.
4310 * Called by the user via ioctl.
4313 * Zero on success, errno on failure.
4315 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4316 struct drm_file
*file_priv
)
4318 struct drm_mode_obj_set_property
*arg
= data
;
4319 struct drm_mode_object
*arg_obj
;
4320 struct drm_mode_object
*prop_obj
;
4321 struct drm_property
*property
;
4325 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4328 drm_modeset_lock_all(dev
);
4330 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4335 if (!arg_obj
->properties
)
4338 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4339 if (arg_obj
->properties
->ids
[i
] == arg
->prop_id
)
4342 if (i
== arg_obj
->properties
->count
)
4345 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
4346 DRM_MODE_OBJECT_PROPERTY
);
4351 property
= obj_to_property(prop_obj
);
4353 if (!drm_property_change_is_valid(property
, arg
->value
))
4356 switch (arg_obj
->type
) {
4357 case DRM_MODE_OBJECT_CONNECTOR
:
4358 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
4361 case DRM_MODE_OBJECT_CRTC
:
4362 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
4364 case DRM_MODE_OBJECT_PLANE
:
4365 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
4366 property
, arg
->value
);
4371 drm_modeset_unlock_all(dev
);
4376 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4377 * @connector: connector to attach
4378 * @encoder: encoder to attach @connector to
4380 * This function links up a connector to an encoder. Note that the routing
4381 * restrictions between encoders and crtcs are exposed to userspace through the
4382 * possible_clones and possible_crtcs bitmasks.
4385 * Zero on success, errno on failure.
4387 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
4388 struct drm_encoder
*encoder
)
4392 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
4393 if (connector
->encoder_ids
[i
] == 0) {
4394 connector
->encoder_ids
[i
] = encoder
->base
.id
;
4400 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
4403 * drm_mode_crtc_set_gamma_size - set the gamma table size
4404 * @crtc: CRTC to set the gamma table size for
4405 * @gamma_size: size of the gamma table
4407 * Drivers which support gamma tables should set this to the supported gamma
4408 * table size when initializing the CRTC. Currently the drm core only supports a
4409 * fixed gamma table size.
4412 * Zero on success, errno on failure.
4414 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
4417 crtc
->gamma_size
= gamma_size
;
4419 crtc
->gamma_store
= kzalloc(gamma_size
* sizeof(uint16_t) * 3, GFP_KERNEL
);
4420 if (!crtc
->gamma_store
) {
4421 crtc
->gamma_size
= 0;
4427 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
4430 * drm_mode_gamma_set_ioctl - set the gamma table
4433 * @file_priv: DRM file info
4435 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4436 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4438 * Called by the user via ioctl.
4441 * Zero on success, errno on failure.
4443 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
4444 void *data
, struct drm_file
*file_priv
)
4446 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4447 struct drm_crtc
*crtc
;
4448 void *r_base
, *g_base
, *b_base
;
4452 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4455 drm_modeset_lock_all(dev
);
4456 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4462 if (crtc
->funcs
->gamma_set
== NULL
) {
4467 /* memcpy into gamma store */
4468 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4473 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4474 r_base
= crtc
->gamma_store
;
4475 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
4480 g_base
= r_base
+ size
;
4481 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
4486 b_base
= g_base
+ size
;
4487 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
4492 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
4495 drm_modeset_unlock_all(dev
);
4501 * drm_mode_gamma_get_ioctl - get the gamma table
4504 * @file_priv: DRM file info
4506 * Copy the current gamma table into the storage provided. This also provides
4507 * the gamma table size the driver expects, which can be used to size the
4508 * allocated storage.
4510 * Called by the user via ioctl.
4513 * Zero on success, errno on failure.
4515 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
4516 void *data
, struct drm_file
*file_priv
)
4518 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4519 struct drm_crtc
*crtc
;
4520 void *r_base
, *g_base
, *b_base
;
4524 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4527 drm_modeset_lock_all(dev
);
4528 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4534 /* memcpy into gamma store */
4535 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4540 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4541 r_base
= crtc
->gamma_store
;
4542 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
4547 g_base
= r_base
+ size
;
4548 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
4553 b_base
= g_base
+ size
;
4554 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
4559 drm_modeset_unlock_all(dev
);
4564 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4567 * @file_priv: DRM file info
4569 * This schedules an asynchronous update on a given CRTC, called page flip.
4570 * Optionally a drm event is generated to signal the completion of the event.
4571 * Generic drivers cannot assume that a pageflip with changed framebuffer
4572 * properties (including driver specific metadata like tiling layout) will work,
4573 * but some drivers support e.g. pixel format changes through the pageflip
4576 * Called by the user via ioctl.
4579 * Zero on success, errno on failure.
4581 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
4582 void *data
, struct drm_file
*file_priv
)
4584 struct drm_mode_crtc_page_flip
*page_flip
= data
;
4585 struct drm_crtc
*crtc
;
4586 struct drm_framebuffer
*fb
= NULL
;
4587 struct drm_pending_vblank_event
*e
= NULL
;
4588 unsigned long flags
;
4591 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
4592 page_flip
->reserved
!= 0)
4595 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
4598 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
4602 drm_modeset_lock_crtc(crtc
);
4603 if (crtc
->primary
->fb
== NULL
) {
4604 /* The framebuffer is currently unbound, presumably
4605 * due to a hotplug event, that userspace has not
4612 if (crtc
->funcs
->page_flip
== NULL
)
4615 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
4621 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
4625 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
4626 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4631 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4633 spin_lock_irqsave(&dev
->event_lock
, flags
);
4634 if (file_priv
->event_space
< sizeof e
->event
) {
4635 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4638 file_priv
->event_space
-= sizeof e
->event
;
4639 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4641 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
4643 spin_lock_irqsave(&dev
->event_lock
, flags
);
4644 file_priv
->event_space
+= sizeof e
->event
;
4645 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4649 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
4650 e
->event
.base
.length
= sizeof e
->event
;
4651 e
->event
.user_data
= page_flip
->user_data
;
4652 e
->base
.event
= &e
->event
.base
;
4653 e
->base
.file_priv
= file_priv
;
4655 (void (*) (struct drm_pending_event
*)) kfree
;
4658 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
4659 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
4661 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4662 spin_lock_irqsave(&dev
->event_lock
, flags
);
4663 file_priv
->event_space
+= sizeof e
->event
;
4664 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4667 /* Keep the old fb, don't unref it. */
4668 crtc
->primary
->old_fb
= NULL
;
4671 * Warn if the driver hasn't properly updated the crtc->fb
4672 * field to reflect that the new framebuffer is now used.
4673 * Failing to do so will screw with the reference counting
4676 WARN_ON(crtc
->primary
->fb
!= fb
);
4677 /* Unref only the old framebuffer. */
4683 drm_framebuffer_unreference(fb
);
4684 if (crtc
->primary
->old_fb
)
4685 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
4686 crtc
->primary
->old_fb
= NULL
;
4687 drm_modeset_unlock_crtc(crtc
);
4693 * drm_mode_config_reset - call ->reset callbacks
4696 * This functions calls all the crtc's, encoder's and connector's ->reset
4697 * callback. Drivers can use this in e.g. their driver load or resume code to
4698 * reset hardware and software state.
4700 void drm_mode_config_reset(struct drm_device
*dev
)
4702 struct drm_crtc
*crtc
;
4703 struct drm_plane
*plane
;
4704 struct drm_encoder
*encoder
;
4705 struct drm_connector
*connector
;
4707 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
)
4708 if (plane
->funcs
->reset
)
4709 plane
->funcs
->reset(plane
);
4711 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
4712 if (crtc
->funcs
->reset
)
4713 crtc
->funcs
->reset(crtc
);
4715 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
4716 if (encoder
->funcs
->reset
)
4717 encoder
->funcs
->reset(encoder
);
4719 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
4720 connector
->status
= connector_status_unknown
;
4722 if (connector
->funcs
->reset
)
4723 connector
->funcs
->reset(connector
);
4726 EXPORT_SYMBOL(drm_mode_config_reset
);
4729 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4732 * @file_priv: DRM file info
4734 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4735 * TTM or something else entirely) and returns the resulting buffer handle. This
4736 * handle can then be wrapped up into a framebuffer modeset object.
4738 * Note that userspace is not allowed to use such objects for render
4739 * acceleration - drivers must create their own private ioctls for such a use
4742 * Called by the user via ioctl.
4745 * Zero on success, errno on failure.
4747 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
4748 void *data
, struct drm_file
*file_priv
)
4750 struct drm_mode_create_dumb
*args
= data
;
4751 u32 cpp
, stride
, size
;
4753 if (!dev
->driver
->dumb_create
)
4755 if (!args
->width
|| !args
->height
|| !args
->bpp
)
4758 /* overflow checks for 32bit size calculations */
4759 /* NOTE: DIV_ROUND_UP() can overflow */
4760 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
4761 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
4763 stride
= cpp
* args
->width
;
4764 if (args
->height
> 0xffffffffU
/ stride
)
4767 /* test for wrap-around */
4768 size
= args
->height
* stride
;
4769 if (PAGE_ALIGN(size
) == 0)
4772 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
4776 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4779 * @file_priv: DRM file info
4781 * Allocate an offset in the drm device node's address space to be able to
4782 * memory map a dumb buffer.
4784 * Called by the user via ioctl.
4787 * Zero on success, errno on failure.
4789 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
4790 void *data
, struct drm_file
*file_priv
)
4792 struct drm_mode_map_dumb
*args
= data
;
4794 /* call driver ioctl to get mmap offset */
4795 if (!dev
->driver
->dumb_map_offset
)
4798 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
4802 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4805 * @file_priv: DRM file info
4807 * This destroys the userspace handle for the given dumb backing storage buffer.
4808 * Since buffer objects must be reference counted in the kernel a buffer object
4809 * won't be immediately freed if a framebuffer modeset object still uses it.
4811 * Called by the user via ioctl.
4814 * Zero on success, errno on failure.
4816 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
4817 void *data
, struct drm_file
*file_priv
)
4819 struct drm_mode_destroy_dumb
*args
= data
;
4821 if (!dev
->driver
->dumb_destroy
)
4824 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
4828 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4829 * @format: pixel format (DRM_FORMAT_*)
4830 * @depth: storage for the depth value
4831 * @bpp: storage for the bpp value
4833 * This only supports RGB formats here for compat with code that doesn't use
4834 * pixel formats directly yet.
4836 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
4841 case DRM_FORMAT_RGB332
:
4842 case DRM_FORMAT_BGR233
:
4846 case DRM_FORMAT_XRGB1555
:
4847 case DRM_FORMAT_XBGR1555
:
4848 case DRM_FORMAT_RGBX5551
:
4849 case DRM_FORMAT_BGRX5551
:
4850 case DRM_FORMAT_ARGB1555
:
4851 case DRM_FORMAT_ABGR1555
:
4852 case DRM_FORMAT_RGBA5551
:
4853 case DRM_FORMAT_BGRA5551
:
4857 case DRM_FORMAT_RGB565
:
4858 case DRM_FORMAT_BGR565
:
4862 case DRM_FORMAT_RGB888
:
4863 case DRM_FORMAT_BGR888
:
4867 case DRM_FORMAT_XRGB8888
:
4868 case DRM_FORMAT_XBGR8888
:
4869 case DRM_FORMAT_RGBX8888
:
4870 case DRM_FORMAT_BGRX8888
:
4874 case DRM_FORMAT_XRGB2101010
:
4875 case DRM_FORMAT_XBGR2101010
:
4876 case DRM_FORMAT_RGBX1010102
:
4877 case DRM_FORMAT_BGRX1010102
:
4878 case DRM_FORMAT_ARGB2101010
:
4879 case DRM_FORMAT_ABGR2101010
:
4880 case DRM_FORMAT_RGBA1010102
:
4881 case DRM_FORMAT_BGRA1010102
:
4885 case DRM_FORMAT_ARGB8888
:
4886 case DRM_FORMAT_ABGR8888
:
4887 case DRM_FORMAT_RGBA8888
:
4888 case DRM_FORMAT_BGRA8888
:
4893 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4894 drm_get_format_name(format
));
4900 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
4903 * drm_format_num_planes - get the number of planes for format
4904 * @format: pixel format (DRM_FORMAT_*)
4907 * The number of planes used by the specified pixel format.
4909 int drm_format_num_planes(uint32_t format
)
4912 case DRM_FORMAT_YUV410
:
4913 case DRM_FORMAT_YVU410
:
4914 case DRM_FORMAT_YUV411
:
4915 case DRM_FORMAT_YVU411
:
4916 case DRM_FORMAT_YUV420
:
4917 case DRM_FORMAT_YVU420
:
4918 case DRM_FORMAT_YUV422
:
4919 case DRM_FORMAT_YVU422
:
4920 case DRM_FORMAT_YUV444
:
4921 case DRM_FORMAT_YVU444
:
4923 case DRM_FORMAT_NV12
:
4924 case DRM_FORMAT_NV21
:
4925 case DRM_FORMAT_NV16
:
4926 case DRM_FORMAT_NV61
:
4927 case DRM_FORMAT_NV24
:
4928 case DRM_FORMAT_NV42
:
4934 EXPORT_SYMBOL(drm_format_num_planes
);
4937 * drm_format_plane_cpp - determine the bytes per pixel value
4938 * @format: pixel format (DRM_FORMAT_*)
4939 * @plane: plane index
4942 * The bytes per pixel value for the specified plane.
4944 int drm_format_plane_cpp(uint32_t format
, int plane
)
4949 if (plane
>= drm_format_num_planes(format
))
4953 case DRM_FORMAT_YUYV
:
4954 case DRM_FORMAT_YVYU
:
4955 case DRM_FORMAT_UYVY
:
4956 case DRM_FORMAT_VYUY
:
4958 case DRM_FORMAT_NV12
:
4959 case DRM_FORMAT_NV21
:
4960 case DRM_FORMAT_NV16
:
4961 case DRM_FORMAT_NV61
:
4962 case DRM_FORMAT_NV24
:
4963 case DRM_FORMAT_NV42
:
4964 return plane
? 2 : 1;
4965 case DRM_FORMAT_YUV410
:
4966 case DRM_FORMAT_YVU410
:
4967 case DRM_FORMAT_YUV411
:
4968 case DRM_FORMAT_YVU411
:
4969 case DRM_FORMAT_YUV420
:
4970 case DRM_FORMAT_YVU420
:
4971 case DRM_FORMAT_YUV422
:
4972 case DRM_FORMAT_YVU422
:
4973 case DRM_FORMAT_YUV444
:
4974 case DRM_FORMAT_YVU444
:
4977 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
4981 EXPORT_SYMBOL(drm_format_plane_cpp
);
4984 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4985 * @format: pixel format (DRM_FORMAT_*)
4988 * The horizontal chroma subsampling factor for the
4989 * specified pixel format.
4991 int drm_format_horz_chroma_subsampling(uint32_t format
)
4994 case DRM_FORMAT_YUV411
:
4995 case DRM_FORMAT_YVU411
:
4996 case DRM_FORMAT_YUV410
:
4997 case DRM_FORMAT_YVU410
:
4999 case DRM_FORMAT_YUYV
:
5000 case DRM_FORMAT_YVYU
:
5001 case DRM_FORMAT_UYVY
:
5002 case DRM_FORMAT_VYUY
:
5003 case DRM_FORMAT_NV12
:
5004 case DRM_FORMAT_NV21
:
5005 case DRM_FORMAT_NV16
:
5006 case DRM_FORMAT_NV61
:
5007 case DRM_FORMAT_YUV422
:
5008 case DRM_FORMAT_YVU422
:
5009 case DRM_FORMAT_YUV420
:
5010 case DRM_FORMAT_YVU420
:
5016 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5019 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5020 * @format: pixel format (DRM_FORMAT_*)
5023 * The vertical chroma subsampling factor for the
5024 * specified pixel format.
5026 int drm_format_vert_chroma_subsampling(uint32_t format
)
5029 case DRM_FORMAT_YUV410
:
5030 case DRM_FORMAT_YVU410
:
5032 case DRM_FORMAT_YUV420
:
5033 case DRM_FORMAT_YVU420
:
5034 case DRM_FORMAT_NV12
:
5035 case DRM_FORMAT_NV21
:
5041 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5044 * drm_rotation_simplify() - Try to simplify the rotation
5045 * @rotation: Rotation to be simplified
5046 * @supported_rotations: Supported rotations
5048 * Attempt to simplify the rotation to a form that is supported.
5049 * Eg. if the hardware supports everything except DRM_REFLECT_X
5050 * one could call this function like this:
5052 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5053 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5054 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5056 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5057 * transforms the hardware supports, this function may not
5058 * be able to produce a supported transform, so the caller should
5059 * check the result afterwards.
5061 unsigned int drm_rotation_simplify(unsigned int rotation
,
5062 unsigned int supported_rotations
)
5064 if (rotation
& ~supported_rotations
) {
5065 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5066 rotation
= (rotation
& ~0xf) | BIT((ffs(rotation
& 0xf) + 1) % 4);
5071 EXPORT_SYMBOL(drm_rotation_simplify
);
5074 * drm_mode_config_init - initialize DRM mode_configuration structure
5077 * Initialize @dev's mode_config structure, used for tracking the graphics
5078 * configuration of @dev.
5080 * Since this initializes the modeset locks, no locking is possible. Which is no
5081 * problem, since this should happen single threaded at init time. It is the
5082 * driver's problem to ensure this guarantee.
5085 void drm_mode_config_init(struct drm_device
*dev
)
5087 mutex_init(&dev
->mode_config
.mutex
);
5088 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5089 mutex_init(&dev
->mode_config
.idr_mutex
);
5090 mutex_init(&dev
->mode_config
.fb_lock
);
5091 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5092 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5093 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5094 INIT_LIST_HEAD(&dev
->mode_config
.bridge_list
);
5095 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5096 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5097 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5098 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5099 idr_init(&dev
->mode_config
.crtc_idr
);
5101 drm_modeset_lock_all(dev
);
5102 drm_mode_create_standard_connector_properties(dev
);
5103 drm_mode_create_standard_plane_properties(dev
);
5104 drm_modeset_unlock_all(dev
);
5106 /* Just to be sure */
5107 dev
->mode_config
.num_fb
= 0;
5108 dev
->mode_config
.num_connector
= 0;
5109 dev
->mode_config
.num_crtc
= 0;
5110 dev
->mode_config
.num_encoder
= 0;
5111 dev
->mode_config
.num_overlay_plane
= 0;
5112 dev
->mode_config
.num_total_plane
= 0;
5114 EXPORT_SYMBOL(drm_mode_config_init
);
5117 * drm_mode_config_cleanup - free up DRM mode_config info
5120 * Free up all the connectors and CRTCs associated with this DRM device, then
5121 * free up the framebuffers and associated buffer objects.
5123 * Note that since this /should/ happen single-threaded at driver/device
5124 * teardown time, no locking is required. It's the driver's job to ensure that
5125 * this guarantee actually holds true.
5127 * FIXME: cleanup any dangling user buffer objects too
5129 void drm_mode_config_cleanup(struct drm_device
*dev
)
5131 struct drm_connector
*connector
, *ot
;
5132 struct drm_crtc
*crtc
, *ct
;
5133 struct drm_encoder
*encoder
, *enct
;
5134 struct drm_bridge
*bridge
, *brt
;
5135 struct drm_framebuffer
*fb
, *fbt
;
5136 struct drm_property
*property
, *pt
;
5137 struct drm_property_blob
*blob
, *bt
;
5138 struct drm_plane
*plane
, *plt
;
5140 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5142 encoder
->funcs
->destroy(encoder
);
5145 list_for_each_entry_safe(bridge
, brt
,
5146 &dev
->mode_config
.bridge_list
, head
) {
5147 bridge
->funcs
->destroy(bridge
);
5150 list_for_each_entry_safe(connector
, ot
,
5151 &dev
->mode_config
.connector_list
, head
) {
5152 connector
->funcs
->destroy(connector
);
5155 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5157 drm_property_destroy(dev
, property
);
5160 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5162 drm_property_destroy_blob(dev
, blob
);
5166 * Single-threaded teardown context, so it's not required to grab the
5167 * fb_lock to protect against concurrent fb_list access. Contrary, it
5168 * would actually deadlock with the drm_framebuffer_cleanup function.
5170 * Also, if there are any framebuffers left, that's a driver leak now,
5171 * so politely WARN about this.
5173 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5174 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5175 drm_framebuffer_remove(fb
);
5178 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5180 plane
->funcs
->destroy(plane
);
5183 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5184 crtc
->funcs
->destroy(crtc
);
5187 idr_destroy(&dev
->mode_config
.crtc_idr
);
5188 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5190 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5192 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5193 unsigned int supported_rotations
)
5195 static const struct drm_prop_enum_list props
[] = {
5196 { DRM_ROTATE_0
, "rotate-0" },
5197 { DRM_ROTATE_90
, "rotate-90" },
5198 { DRM_ROTATE_180
, "rotate-180" },
5199 { DRM_ROTATE_270
, "rotate-270" },
5200 { DRM_REFLECT_X
, "reflect-x" },
5201 { DRM_REFLECT_Y
, "reflect-y" },
5204 return drm_property_create_bitmask(dev
, 0, "rotation",
5205 props
, ARRAY_SIZE(props
),
5206 supported_rotations
);
5208 EXPORT_SYMBOL(drm_mode_create_rotation_property
);