2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_fourcc.h>
40 #include <drm/drm_modeset_lock.h>
42 #include "drm_crtc_internal.h"
43 #include "drm_internal.h"
45 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
46 struct drm_mode_fb_cmd2
*r
,
47 struct drm_file
*file_priv
);
49 /* Avoid boilerplate. I'm tired of typing. */
50 #define DRM_ENUM_NAME_FN(fnname, list) \
51 const char *fnname(int val) \
54 for (i = 0; i < ARRAY_SIZE(list); i++) { \
55 if (list[i].type == val) \
56 return list[i].name; \
64 static const struct drm_prop_enum_list drm_dpms_enum_list
[] =
65 { { DRM_MODE_DPMS_ON
, "On" },
66 { DRM_MODE_DPMS_STANDBY
, "Standby" },
67 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
68 { DRM_MODE_DPMS_OFF
, "Off" }
71 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
73 static const struct drm_prop_enum_list drm_plane_type_enum_list
[] =
75 { DRM_PLANE_TYPE_OVERLAY
, "Overlay" },
76 { DRM_PLANE_TYPE_PRIMARY
, "Primary" },
77 { DRM_PLANE_TYPE_CURSOR
, "Cursor" },
83 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] =
85 { DRM_MODE_SCALE_NONE
, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
87 { DRM_MODE_SCALE_CENTER
, "Center" },
88 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list
[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE
, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3
, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9
, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list
[] =
102 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
103 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
104 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
107 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
109 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] =
111 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
112 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
113 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
116 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
117 drm_dvi_i_subconnector_enum_list
)
119 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] =
121 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
125 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
128 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
130 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] =
132 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
133 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
134 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
135 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
136 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
139 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
140 drm_tv_subconnector_enum_list
)
142 static const struct drm_prop_enum_list drm_dirty_info_enum_list
[] = {
143 { DRM_MODE_DIRTY_OFF
, "Off" },
144 { DRM_MODE_DIRTY_ON
, "On" },
145 { DRM_MODE_DIRTY_ANNOTATE
, "Annotate" },
148 struct drm_conn_prop_enum_list
{
155 * Connector and encoder types.
157 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] =
158 { { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
159 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
160 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
161 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
162 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
163 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
164 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
165 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
166 { DRM_MODE_CONNECTOR_Component
, "Component" },
167 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
168 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
169 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
170 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
171 { DRM_MODE_CONNECTOR_TV
, "TV" },
172 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
173 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
174 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
177 static const struct drm_prop_enum_list drm_encoder_enum_list
[] =
178 { { DRM_MODE_ENCODER_NONE
, "None" },
179 { DRM_MODE_ENCODER_DAC
, "DAC" },
180 { DRM_MODE_ENCODER_TMDS
, "TMDS" },
181 { DRM_MODE_ENCODER_LVDS
, "LVDS" },
182 { DRM_MODE_ENCODER_TVDAC
, "TV" },
183 { DRM_MODE_ENCODER_VIRTUAL
, "Virtual" },
184 { DRM_MODE_ENCODER_DSI
, "DSI" },
185 { DRM_MODE_ENCODER_DPMST
, "DP MST" },
188 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] =
190 { SubPixelUnknown
, "Unknown" },
191 { SubPixelHorizontalRGB
, "Horizontal RGB" },
192 { SubPixelHorizontalBGR
, "Horizontal BGR" },
193 { SubPixelVerticalRGB
, "Vertical RGB" },
194 { SubPixelVerticalBGR
, "Vertical BGR" },
195 { SubPixelNone
, "None" },
198 void drm_connector_ida_init(void)
202 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
203 ida_init(&drm_connector_enum_list
[i
].ida
);
206 void drm_connector_ida_destroy(void)
210 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
211 ida_destroy(&drm_connector_enum_list
[i
].ida
);
215 * drm_get_connector_status_name - return a string for connector status
216 * @status: connector status to compute name of
218 * In contrast to the other drm_get_*_name functions this one here returns a
219 * const pointer and hence is threadsafe.
221 const char *drm_get_connector_status_name(enum drm_connector_status status
)
223 if (status
== connector_status_connected
)
225 else if (status
== connector_status_disconnected
)
226 return "disconnected";
230 EXPORT_SYMBOL(drm_get_connector_status_name
);
233 * drm_get_subpixel_order_name - return a string for a given subpixel enum
234 * @order: enum of subpixel_order
236 * Note you could abuse this and return something out of bounds, but that
237 * would be a caller error. No unscrubbed user data should make it here.
239 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
241 return drm_subpixel_enum_list
[order
].name
;
243 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
245 static char printable_char(int c
)
247 return isascii(c
) && isprint(c
) ? c
: '?';
251 * drm_get_format_name - return a string for drm fourcc format
252 * @format: format to compute name of
254 * Note that the buffer used by this function is globally shared and owned by
255 * the function itself.
257 * FIXME: This isn't really multithreading safe.
259 const char *drm_get_format_name(uint32_t format
)
263 snprintf(buf
, sizeof(buf
),
264 "%c%c%c%c %s-endian (0x%08x)",
265 printable_char(format
& 0xff),
266 printable_char((format
>> 8) & 0xff),
267 printable_char((format
>> 16) & 0xff),
268 printable_char((format
>> 24) & 0x7f),
269 format
& DRM_FORMAT_BIG_ENDIAN
? "big" : "little",
274 EXPORT_SYMBOL(drm_get_format_name
);
277 * Internal function to assign a slot in the object idr and optionally
278 * register the object into the idr.
280 static int drm_mode_object_get_reg(struct drm_device
*dev
,
281 struct drm_mode_object
*obj
,
287 mutex_lock(&dev
->mode_config
.idr_mutex
);
288 ret
= idr_alloc(&dev
->mode_config
.crtc_idr
, register_obj
? obj
: NULL
, 1, 0, GFP_KERNEL
);
291 * Set up the object linking under the protection of the idr
292 * lock so that other users can't see inconsistent state.
295 obj
->type
= obj_type
;
297 mutex_unlock(&dev
->mode_config
.idr_mutex
);
299 return ret
< 0 ? ret
: 0;
303 * drm_mode_object_get - allocate a new modeset identifier
305 * @obj: object pointer, used to generate unique ID
306 * @obj_type: object type
308 * Create a unique identifier based on @ptr in @dev's identifier space. Used
309 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
310 * modeset identifiers are _not_ reference counted. Hence don't use this for
311 * reference counted modeset objects like framebuffers.
314 * New unique (relative to other objects in @dev) integer identifier for the
317 int drm_mode_object_get(struct drm_device
*dev
,
318 struct drm_mode_object
*obj
, uint32_t obj_type
)
320 return drm_mode_object_get_reg(dev
, obj
, obj_type
, true);
323 static void drm_mode_object_register(struct drm_device
*dev
,
324 struct drm_mode_object
*obj
)
326 mutex_lock(&dev
->mode_config
.idr_mutex
);
327 idr_replace(&dev
->mode_config
.crtc_idr
, obj
, obj
->id
);
328 mutex_unlock(&dev
->mode_config
.idr_mutex
);
332 * drm_mode_object_put - free a modeset identifer
334 * @object: object to free
336 * Free @id from @dev's unique identifier pool. Note that despite the _get
337 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
338 * for reference counted modeset objects like framebuffers.
340 void drm_mode_object_put(struct drm_device
*dev
,
341 struct drm_mode_object
*object
)
343 mutex_lock(&dev
->mode_config
.idr_mutex
);
344 idr_remove(&dev
->mode_config
.crtc_idr
, object
->id
);
345 mutex_unlock(&dev
->mode_config
.idr_mutex
);
348 static struct drm_mode_object
*_object_find(struct drm_device
*dev
,
349 uint32_t id
, uint32_t type
)
351 struct drm_mode_object
*obj
= NULL
;
353 mutex_lock(&dev
->mode_config
.idr_mutex
);
354 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
355 if (obj
&& type
!= DRM_MODE_OBJECT_ANY
&& obj
->type
!= type
)
357 if (obj
&& obj
->id
!= id
)
359 /* don't leak out unref'd fb's */
360 if (obj
&& (obj
->type
== DRM_MODE_OBJECT_FB
))
362 mutex_unlock(&dev
->mode_config
.idr_mutex
);
368 * drm_mode_object_find - look up a drm object with static lifetime
370 * @id: id of the mode object
371 * @type: type of the mode object
373 * Note that framebuffers cannot be looked up with this functions - since those
374 * are reference counted, they need special treatment. Even with
375 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
376 * rather than WARN_ON()).
378 struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
379 uint32_t id
, uint32_t type
)
381 struct drm_mode_object
*obj
= NULL
;
383 /* Framebuffers are reference counted and need their own lookup
385 WARN_ON(type
== DRM_MODE_OBJECT_FB
);
386 obj
= _object_find(dev
, id
, type
);
389 EXPORT_SYMBOL(drm_mode_object_find
);
392 * drm_framebuffer_init - initialize a framebuffer
394 * @fb: framebuffer to be initialized
395 * @funcs: ... with these functions
397 * Allocates an ID for the framebuffer's parent mode object, sets its mode
398 * functions & device file and adds it to the master fd list.
401 * This functions publishes the fb and makes it available for concurrent access
402 * by other users. Which means by this point the fb _must_ be fully set up -
403 * since all the fb attributes are invariant over its lifetime, no further
404 * locking but only correct reference counting is required.
407 * Zero on success, error code on failure.
409 int drm_framebuffer_init(struct drm_device
*dev
, struct drm_framebuffer
*fb
,
410 const struct drm_framebuffer_funcs
*funcs
)
414 mutex_lock(&dev
->mode_config
.fb_lock
);
415 kref_init(&fb
->refcount
);
416 INIT_LIST_HEAD(&fb
->filp_head
);
420 ret
= drm_mode_object_get(dev
, &fb
->base
, DRM_MODE_OBJECT_FB
);
424 dev
->mode_config
.num_fb
++;
425 list_add(&fb
->head
, &dev
->mode_config
.fb_list
);
427 mutex_unlock(&dev
->mode_config
.fb_lock
);
431 EXPORT_SYMBOL(drm_framebuffer_init
);
433 /* dev->mode_config.fb_lock must be held! */
434 static void __drm_framebuffer_unregister(struct drm_device
*dev
,
435 struct drm_framebuffer
*fb
)
437 mutex_lock(&dev
->mode_config
.idr_mutex
);
438 idr_remove(&dev
->mode_config
.crtc_idr
, fb
->base
.id
);
439 mutex_unlock(&dev
->mode_config
.idr_mutex
);
444 static void drm_framebuffer_free(struct kref
*kref
)
446 struct drm_framebuffer
*fb
=
447 container_of(kref
, struct drm_framebuffer
, refcount
);
448 struct drm_device
*dev
= fb
->dev
;
451 * The lookup idr holds a weak reference, which has not necessarily been
452 * removed at this point. Check for that.
454 mutex_lock(&dev
->mode_config
.fb_lock
);
456 /* Mark fb as reaped and drop idr ref. */
457 __drm_framebuffer_unregister(dev
, fb
);
459 mutex_unlock(&dev
->mode_config
.fb_lock
);
461 fb
->funcs
->destroy(fb
);
464 static struct drm_framebuffer
*__drm_framebuffer_lookup(struct drm_device
*dev
,
467 struct drm_mode_object
*obj
= NULL
;
468 struct drm_framebuffer
*fb
;
470 mutex_lock(&dev
->mode_config
.idr_mutex
);
471 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
472 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_FB
) || (obj
->id
!= id
))
476 mutex_unlock(&dev
->mode_config
.idr_mutex
);
482 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
484 * @id: id of the fb object
486 * If successful, this grabs an additional reference to the framebuffer -
487 * callers need to make sure to eventually unreference the returned framebuffer
488 * again, using @drm_framebuffer_unreference.
490 struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
493 struct drm_framebuffer
*fb
;
495 mutex_lock(&dev
->mode_config
.fb_lock
);
496 fb
= __drm_framebuffer_lookup(dev
, id
);
498 if (!kref_get_unless_zero(&fb
->refcount
))
501 mutex_unlock(&dev
->mode_config
.fb_lock
);
505 EXPORT_SYMBOL(drm_framebuffer_lookup
);
508 * drm_framebuffer_unreference - unref a framebuffer
509 * @fb: framebuffer to unref
511 * This functions decrements the fb's refcount and frees it if it drops to zero.
513 void drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
515 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
516 kref_put(&fb
->refcount
, drm_framebuffer_free
);
518 EXPORT_SYMBOL(drm_framebuffer_unreference
);
521 * drm_framebuffer_reference - incr the fb refcnt
524 * This functions increments the fb's refcount.
526 void drm_framebuffer_reference(struct drm_framebuffer
*fb
)
528 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
529 kref_get(&fb
->refcount
);
531 EXPORT_SYMBOL(drm_framebuffer_reference
);
533 static void drm_framebuffer_free_bug(struct kref
*kref
)
538 static void __drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
540 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
541 kref_put(&fb
->refcount
, drm_framebuffer_free_bug
);
545 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
546 * @fb: fb to unregister
548 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
549 * those used for fbdev. Note that the caller must hold a reference of it's own,
550 * i.e. the object may not be destroyed through this call (since it'll lead to a
551 * locking inversion).
553 void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
)
555 struct drm_device
*dev
= fb
->dev
;
557 mutex_lock(&dev
->mode_config
.fb_lock
);
558 /* Mark fb as reaped and drop idr ref. */
559 __drm_framebuffer_unregister(dev
, fb
);
560 mutex_unlock(&dev
->mode_config
.fb_lock
);
562 EXPORT_SYMBOL(drm_framebuffer_unregister_private
);
565 * drm_framebuffer_cleanup - remove a framebuffer object
566 * @fb: framebuffer to remove
568 * Cleanup framebuffer. This function is intended to be used from the drivers
569 * ->destroy callback. It can also be used to clean up driver private
570 * framebuffers embedded into a larger structure.
572 * Note that this function does not remove the fb from active usuage - if it is
573 * still used anywhere, hilarity can ensue since userspace could call getfb on
574 * the id and get back -EINVAL. Obviously no concern at driver unload time.
576 * Also, the framebuffer will not be removed from the lookup idr - for
577 * user-created framebuffers this will happen in in the rmfb ioctl. For
578 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
579 * drm_framebuffer_unregister_private.
581 void drm_framebuffer_cleanup(struct drm_framebuffer
*fb
)
583 struct drm_device
*dev
= fb
->dev
;
585 mutex_lock(&dev
->mode_config
.fb_lock
);
587 dev
->mode_config
.num_fb
--;
588 mutex_unlock(&dev
->mode_config
.fb_lock
);
590 EXPORT_SYMBOL(drm_framebuffer_cleanup
);
593 * drm_framebuffer_remove - remove and unreference a framebuffer object
594 * @fb: framebuffer to remove
596 * Scans all the CRTCs and planes in @dev's mode_config. If they're
597 * using @fb, removes it, setting it to NULL. Then drops the reference to the
598 * passed-in framebuffer. Might take the modeset locks.
600 * Note that this function optimizes the cleanup away if the caller holds the
601 * last reference to the framebuffer. It is also guaranteed to not take the
602 * modeset locks in this case.
604 void drm_framebuffer_remove(struct drm_framebuffer
*fb
)
606 struct drm_device
*dev
= fb
->dev
;
607 struct drm_crtc
*crtc
;
608 struct drm_plane
*plane
;
609 struct drm_mode_set set
;
612 WARN_ON(!list_empty(&fb
->filp_head
));
615 * drm ABI mandates that we remove any deleted framebuffers from active
616 * useage. But since most sane clients only remove framebuffers they no
617 * longer need, try to optimize this away.
619 * Since we're holding a reference ourselves, observing a refcount of 1
620 * means that we're the last holder and can skip it. Also, the refcount
621 * can never increase from 1 again, so we don't need any barriers or
624 * Note that userspace could try to race with use and instate a new
625 * usage _after_ we've cleared all current ones. End result will be an
626 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
629 if (atomic_read(&fb
->refcount
.refcount
) > 1) {
630 drm_modeset_lock_all(dev
);
631 /* remove from any CRTC */
632 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
633 if (crtc
->primary
->fb
== fb
) {
634 /* should turn off the crtc */
635 memset(&set
, 0, sizeof(struct drm_mode_set
));
638 ret
= drm_mode_set_config_internal(&set
);
640 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc
);
644 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
) {
646 drm_plane_force_disable(plane
);
648 drm_modeset_unlock_all(dev
);
651 drm_framebuffer_unreference(fb
);
653 EXPORT_SYMBOL(drm_framebuffer_remove
);
655 DEFINE_WW_CLASS(crtc_ww_class
);
658 * drm_crtc_init_with_planes - Initialise a new CRTC object with
659 * specified primary and cursor planes.
661 * @crtc: CRTC object to init
662 * @primary: Primary plane for CRTC
663 * @cursor: Cursor plane for CRTC
664 * @funcs: callbacks for the new CRTC
666 * Inits a new object created as base part of a driver crtc object.
669 * Zero on success, error code on failure.
671 int drm_crtc_init_with_planes(struct drm_device
*dev
, struct drm_crtc
*crtc
,
672 struct drm_plane
*primary
,
673 struct drm_plane
*cursor
,
674 const struct drm_crtc_funcs
*funcs
)
676 struct drm_mode_config
*config
= &dev
->mode_config
;
681 crtc
->invert_dimensions
= false;
683 drm_modeset_lock_init(&crtc
->mutex
);
684 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
688 crtc
->base
.properties
= &crtc
->properties
;
690 list_add_tail(&crtc
->head
, &config
->crtc_list
);
693 crtc
->primary
= primary
;
694 crtc
->cursor
= cursor
;
696 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
698 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
704 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
707 * drm_crtc_cleanup - Clean up the core crtc usage
708 * @crtc: CRTC to cleanup
710 * This function cleans up @crtc and removes it from the DRM mode setting
711 * core. Note that the function does *not* free the crtc structure itself,
712 * this is the responsibility of the caller.
714 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
716 struct drm_device
*dev
= crtc
->dev
;
718 kfree(crtc
->gamma_store
);
719 crtc
->gamma_store
= NULL
;
721 drm_modeset_lock_fini(&crtc
->mutex
);
723 drm_mode_object_put(dev
, &crtc
->base
);
724 list_del(&crtc
->head
);
725 dev
->mode_config
.num_crtc
--;
727 EXPORT_SYMBOL(drm_crtc_cleanup
);
730 * drm_crtc_index - find the index of a registered CRTC
731 * @crtc: CRTC to find index for
733 * Given a registered CRTC, return the index of that CRTC within a DRM
734 * device's list of CRTCs.
736 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
738 unsigned int index
= 0;
739 struct drm_crtc
*tmp
;
741 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
750 EXPORT_SYMBOL(drm_crtc_index
);
753 * drm_mode_remove - remove and free a mode
754 * @connector: connector list to modify
755 * @mode: mode to remove
757 * Remove @mode from @connector's mode list, then free it.
759 static void drm_mode_remove(struct drm_connector
*connector
,
760 struct drm_display_mode
*mode
)
762 list_del(&mode
->head
);
763 drm_mode_destroy(connector
->dev
, mode
);
767 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
768 * @connector: connector to quwery
770 * The kernel supports per-connector configration of its consoles through
771 * use of the video= parameter. This function parses that option and
772 * extracts the user's specified mode (or enable/disable status) for a
773 * particular connector. This is typically only used during the early fbdev
776 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
778 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
781 if (fb_get_options(connector
->name
, &option
))
784 if (!drm_mode_parse_command_line_for_connector(option
,
792 switch (mode
->force
) {
796 case DRM_FORCE_ON_DIGITAL
:
805 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
806 connector
->force
= mode
->force
;
809 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
811 mode
->xres
, mode
->yres
,
812 mode
->refresh_specified
? mode
->refresh
: 60,
813 mode
->rb
? " reduced blanking" : "",
814 mode
->margins
? " with margins" : "",
815 mode
->interlace
? " interlaced" : "");
819 * drm_connector_init - Init a preallocated connector
821 * @connector: the connector to init
822 * @funcs: callbacks for this connector
823 * @connector_type: user visible type of the connector
825 * Initialises a preallocated connector. Connectors should be
826 * subclassed as part of driver connector objects.
829 * Zero on success, error code on failure.
831 int drm_connector_init(struct drm_device
*dev
,
832 struct drm_connector
*connector
,
833 const struct drm_connector_funcs
*funcs
,
837 struct ida
*connector_ida
=
838 &drm_connector_enum_list
[connector_type
].ida
;
840 drm_modeset_lock_all(dev
);
842 ret
= drm_mode_object_get_reg(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
, false);
846 connector
->base
.properties
= &connector
->properties
;
847 connector
->dev
= dev
;
848 connector
->funcs
= funcs
;
849 connector
->connector_type
= connector_type
;
850 connector
->connector_type_id
=
851 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
852 if (connector
->connector_type_id
< 0) {
853 ret
= connector
->connector_type_id
;
857 kasprintf(GFP_KERNEL
, "%s-%d",
858 drm_connector_enum_list
[connector_type
].name
,
859 connector
->connector_type_id
);
860 if (!connector
->name
) {
865 INIT_LIST_HEAD(&connector
->probed_modes
);
866 INIT_LIST_HEAD(&connector
->modes
);
867 connector
->edid_blob_ptr
= NULL
;
868 connector
->status
= connector_status_unknown
;
870 drm_connector_get_cmdline_mode(connector
);
872 list_add_tail(&connector
->head
, &dev
->mode_config
.connector_list
);
873 dev
->mode_config
.num_connector
++;
875 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
876 drm_object_attach_property(&connector
->base
,
877 dev
->mode_config
.edid_property
,
880 drm_object_attach_property(&connector
->base
,
881 dev
->mode_config
.dpms_property
, 0);
883 connector
->debugfs_entry
= NULL
;
887 drm_mode_object_put(dev
, &connector
->base
);
890 drm_modeset_unlock_all(dev
);
894 EXPORT_SYMBOL(drm_connector_init
);
897 * drm_connector_cleanup - cleans up an initialised connector
898 * @connector: connector to cleanup
900 * Cleans up the connector but doesn't free the object.
902 void drm_connector_cleanup(struct drm_connector
*connector
)
904 struct drm_device
*dev
= connector
->dev
;
905 struct drm_display_mode
*mode
, *t
;
907 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
908 drm_mode_remove(connector
, mode
);
910 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
911 drm_mode_remove(connector
, mode
);
913 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
914 connector
->connector_type_id
);
916 drm_mode_object_put(dev
, &connector
->base
);
917 kfree(connector
->name
);
918 connector
->name
= NULL
;
919 list_del(&connector
->head
);
920 dev
->mode_config
.num_connector
--;
922 EXPORT_SYMBOL(drm_connector_cleanup
);
925 * drm_connector_index - find the index of a registered connector
926 * @connector: connector to find index for
928 * Given a registered connector, return the index of that connector within a DRM
929 * device's list of connectors.
931 unsigned int drm_connector_index(struct drm_connector
*connector
)
933 unsigned int index
= 0;
934 struct drm_connector
*tmp
;
936 list_for_each_entry(tmp
, &connector
->dev
->mode_config
.connector_list
, head
) {
937 if (tmp
== connector
)
945 EXPORT_SYMBOL(drm_connector_index
);
948 * drm_connector_register - register a connector
949 * @connector: the connector to register
951 * Register userspace interfaces for a connector
954 * Zero on success, error code on failure.
956 int drm_connector_register(struct drm_connector
*connector
)
960 drm_mode_object_register(connector
->dev
, &connector
->base
);
962 ret
= drm_sysfs_connector_add(connector
);
966 ret
= drm_debugfs_connector_add(connector
);
968 drm_sysfs_connector_remove(connector
);
974 EXPORT_SYMBOL(drm_connector_register
);
977 * drm_connector_unregister - unregister a connector
978 * @connector: the connector to unregister
980 * Unregister userspace interfaces for a connector
982 void drm_connector_unregister(struct drm_connector
*connector
)
984 drm_sysfs_connector_remove(connector
);
985 drm_debugfs_connector_remove(connector
);
987 EXPORT_SYMBOL(drm_connector_unregister
);
991 * drm_connector_unplug_all - unregister connector userspace interfaces
994 * This function unregisters all connector userspace interfaces in sysfs. Should
995 * be call when the device is disconnected, e.g. from an usb driver's
996 * ->disconnect callback.
998 void drm_connector_unplug_all(struct drm_device
*dev
)
1000 struct drm_connector
*connector
;
1002 /* taking the mode config mutex ends up in a clash with sysfs */
1003 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1004 drm_connector_unregister(connector
);
1007 EXPORT_SYMBOL(drm_connector_unplug_all
);
1010 * drm_bridge_init - initialize a drm transcoder/bridge
1012 * @bridge: transcoder/bridge to set up
1013 * @funcs: bridge function table
1015 * Initialises a preallocated bridge. Bridges should be
1016 * subclassed as part of driver connector objects.
1019 * Zero on success, error code on failure.
1021 int drm_bridge_init(struct drm_device
*dev
, struct drm_bridge
*bridge
,
1022 const struct drm_bridge_funcs
*funcs
)
1026 drm_modeset_lock_all(dev
);
1028 ret
= drm_mode_object_get(dev
, &bridge
->base
, DRM_MODE_OBJECT_BRIDGE
);
1033 bridge
->funcs
= funcs
;
1035 list_add_tail(&bridge
->head
, &dev
->mode_config
.bridge_list
);
1036 dev
->mode_config
.num_bridge
++;
1039 drm_modeset_unlock_all(dev
);
1042 EXPORT_SYMBOL(drm_bridge_init
);
1045 * drm_bridge_cleanup - cleans up an initialised bridge
1046 * @bridge: bridge to cleanup
1048 * Cleans up the bridge but doesn't free the object.
1050 void drm_bridge_cleanup(struct drm_bridge
*bridge
)
1052 struct drm_device
*dev
= bridge
->dev
;
1054 drm_modeset_lock_all(dev
);
1055 drm_mode_object_put(dev
, &bridge
->base
);
1056 list_del(&bridge
->head
);
1057 dev
->mode_config
.num_bridge
--;
1058 drm_modeset_unlock_all(dev
);
1060 EXPORT_SYMBOL(drm_bridge_cleanup
);
1063 * drm_encoder_init - Init a preallocated encoder
1065 * @encoder: the encoder to init
1066 * @funcs: callbacks for this encoder
1067 * @encoder_type: user visible type of the encoder
1069 * Initialises a preallocated encoder. Encoder should be
1070 * subclassed as part of driver encoder objects.
1073 * Zero on success, error code on failure.
1075 int drm_encoder_init(struct drm_device
*dev
,
1076 struct drm_encoder
*encoder
,
1077 const struct drm_encoder_funcs
*funcs
,
1082 drm_modeset_lock_all(dev
);
1084 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1089 encoder
->encoder_type
= encoder_type
;
1090 encoder
->funcs
= funcs
;
1091 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1092 drm_encoder_enum_list
[encoder_type
].name
,
1094 if (!encoder
->name
) {
1099 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1100 dev
->mode_config
.num_encoder
++;
1104 drm_mode_object_put(dev
, &encoder
->base
);
1107 drm_modeset_unlock_all(dev
);
1111 EXPORT_SYMBOL(drm_encoder_init
);
1114 * drm_encoder_cleanup - cleans up an initialised encoder
1115 * @encoder: encoder to cleanup
1117 * Cleans up the encoder but doesn't free the object.
1119 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1121 struct drm_device
*dev
= encoder
->dev
;
1122 drm_modeset_lock_all(dev
);
1123 drm_mode_object_put(dev
, &encoder
->base
);
1124 kfree(encoder
->name
);
1125 encoder
->name
= NULL
;
1126 list_del(&encoder
->head
);
1127 dev
->mode_config
.num_encoder
--;
1128 drm_modeset_unlock_all(dev
);
1130 EXPORT_SYMBOL(drm_encoder_cleanup
);
1133 * drm_universal_plane_init - Initialize a new universal plane object
1135 * @plane: plane object to init
1136 * @possible_crtcs: bitmask of possible CRTCs
1137 * @funcs: callbacks for the new plane
1138 * @formats: array of supported formats (%DRM_FORMAT_*)
1139 * @format_count: number of elements in @formats
1140 * @type: type of plane (overlay, primary, cursor)
1142 * Initializes a plane object of type @type.
1145 * Zero on success, error code on failure.
1147 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1148 unsigned long possible_crtcs
,
1149 const struct drm_plane_funcs
*funcs
,
1150 const uint32_t *formats
, uint32_t format_count
,
1151 enum drm_plane_type type
)
1155 drm_modeset_lock_all(dev
);
1157 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1161 plane
->base
.properties
= &plane
->properties
;
1163 plane
->funcs
= funcs
;
1164 plane
->format_types
= kmalloc(sizeof(uint32_t) * format_count
,
1166 if (!plane
->format_types
) {
1167 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1168 drm_mode_object_put(dev
, &plane
->base
);
1173 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1174 plane
->format_count
= format_count
;
1175 plane
->possible_crtcs
= possible_crtcs
;
1178 list_add_tail(&plane
->head
, &dev
->mode_config
.plane_list
);
1179 dev
->mode_config
.num_total_plane
++;
1180 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1181 dev
->mode_config
.num_overlay_plane
++;
1183 drm_object_attach_property(&plane
->base
,
1184 dev
->mode_config
.plane_type_property
,
1188 drm_modeset_unlock_all(dev
);
1192 EXPORT_SYMBOL(drm_universal_plane_init
);
1195 * drm_plane_init - Initialize a legacy plane
1197 * @plane: plane object to init
1198 * @possible_crtcs: bitmask of possible CRTCs
1199 * @funcs: callbacks for the new plane
1200 * @formats: array of supported formats (%DRM_FORMAT_*)
1201 * @format_count: number of elements in @formats
1202 * @is_primary: plane type (primary vs overlay)
1204 * Legacy API to initialize a DRM plane.
1206 * New drivers should call drm_universal_plane_init() instead.
1209 * Zero on success, error code on failure.
1211 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1212 unsigned long possible_crtcs
,
1213 const struct drm_plane_funcs
*funcs
,
1214 const uint32_t *formats
, uint32_t format_count
,
1217 enum drm_plane_type type
;
1219 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1220 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1221 formats
, format_count
, type
);
1223 EXPORT_SYMBOL(drm_plane_init
);
1226 * drm_plane_cleanup - Clean up the core plane usage
1227 * @plane: plane to cleanup
1229 * This function cleans up @plane and removes it from the DRM mode setting
1230 * core. Note that the function does *not* free the plane structure itself,
1231 * this is the responsibility of the caller.
1233 void drm_plane_cleanup(struct drm_plane
*plane
)
1235 struct drm_device
*dev
= plane
->dev
;
1237 drm_modeset_lock_all(dev
);
1238 kfree(plane
->format_types
);
1239 drm_mode_object_put(dev
, &plane
->base
);
1241 BUG_ON(list_empty(&plane
->head
));
1243 list_del(&plane
->head
);
1244 dev
->mode_config
.num_total_plane
--;
1245 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1246 dev
->mode_config
.num_overlay_plane
--;
1247 drm_modeset_unlock_all(dev
);
1249 EXPORT_SYMBOL(drm_plane_cleanup
);
1252 * drm_plane_index - find the index of a registered plane
1253 * @plane: plane to find index for
1255 * Given a registered plane, return the index of that CRTC within a DRM
1256 * device's list of planes.
1258 unsigned int drm_plane_index(struct drm_plane
*plane
)
1260 unsigned int index
= 0;
1261 struct drm_plane
*tmp
;
1263 list_for_each_entry(tmp
, &plane
->dev
->mode_config
.plane_list
, head
) {
1272 EXPORT_SYMBOL(drm_plane_index
);
1275 * drm_plane_force_disable - Forcibly disable a plane
1276 * @plane: plane to disable
1278 * Forces the plane to be disabled.
1280 * Used when the plane's current framebuffer is destroyed,
1281 * and when restoring fbdev mode.
1283 void drm_plane_force_disable(struct drm_plane
*plane
)
1290 plane
->old_fb
= plane
->fb
;
1291 ret
= plane
->funcs
->disable_plane(plane
);
1293 DRM_ERROR("failed to disable plane with busy fb\n");
1294 plane
->old_fb
= NULL
;
1297 /* disconnect the plane from the fb and crtc: */
1298 __drm_framebuffer_unreference(plane
->old_fb
);
1299 plane
->old_fb
= NULL
;
1303 EXPORT_SYMBOL(drm_plane_force_disable
);
1305 static int drm_mode_create_standard_connector_properties(struct drm_device
*dev
)
1307 struct drm_property
*edid
;
1308 struct drm_property
*dpms
;
1309 struct drm_property
*dev_path
;
1312 * Standard properties (apply to all connectors)
1314 edid
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1315 DRM_MODE_PROP_IMMUTABLE
,
1317 dev
->mode_config
.edid_property
= edid
;
1319 dpms
= drm_property_create_enum(dev
, 0,
1320 "DPMS", drm_dpms_enum_list
,
1321 ARRAY_SIZE(drm_dpms_enum_list
));
1322 dev
->mode_config
.dpms_property
= dpms
;
1324 dev_path
= drm_property_create(dev
,
1325 DRM_MODE_PROP_BLOB
|
1326 DRM_MODE_PROP_IMMUTABLE
,
1328 dev
->mode_config
.path_property
= dev_path
;
1333 static int drm_mode_create_standard_plane_properties(struct drm_device
*dev
)
1335 struct drm_property
*type
;
1338 * Standard properties (apply to all planes)
1340 type
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1341 "type", drm_plane_type_enum_list
,
1342 ARRAY_SIZE(drm_plane_type_enum_list
));
1343 dev
->mode_config
.plane_type_property
= type
;
1349 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1352 * Called by a driver the first time a DVI-I connector is made.
1354 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1356 struct drm_property
*dvi_i_selector
;
1357 struct drm_property
*dvi_i_subconnector
;
1359 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1363 drm_property_create_enum(dev
, 0,
1364 "select subconnector",
1365 drm_dvi_i_select_enum_list
,
1366 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1367 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1369 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1371 drm_dvi_i_subconnector_enum_list
,
1372 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1373 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1377 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1380 * drm_create_tv_properties - create TV specific connector properties
1382 * @num_modes: number of different TV formats (modes) supported
1383 * @modes: array of pointers to strings containing name of each format
1385 * Called by a driver's TV initialization routine, this function creates
1386 * the TV specific connector properties for a given device. Caller is
1387 * responsible for allocating a list of format names and passing them to
1390 int drm_mode_create_tv_properties(struct drm_device
*dev
, int num_modes
,
1393 struct drm_property
*tv_selector
;
1394 struct drm_property
*tv_subconnector
;
1397 if (dev
->mode_config
.tv_select_subconnector_property
)
1401 * Basic connector properties
1403 tv_selector
= drm_property_create_enum(dev
, 0,
1404 "select subconnector",
1405 drm_tv_select_enum_list
,
1406 ARRAY_SIZE(drm_tv_select_enum_list
));
1407 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1410 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1412 drm_tv_subconnector_enum_list
,
1413 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1414 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1417 * Other, TV specific properties: margins & TV modes.
1419 dev
->mode_config
.tv_left_margin_property
=
1420 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1422 dev
->mode_config
.tv_right_margin_property
=
1423 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1425 dev
->mode_config
.tv_top_margin_property
=
1426 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1428 dev
->mode_config
.tv_bottom_margin_property
=
1429 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1431 dev
->mode_config
.tv_mode_property
=
1432 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1434 for (i
= 0; i
< num_modes
; i
++)
1435 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1438 dev
->mode_config
.tv_brightness_property
=
1439 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1441 dev
->mode_config
.tv_contrast_property
=
1442 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1444 dev
->mode_config
.tv_flicker_reduction_property
=
1445 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1447 dev
->mode_config
.tv_overscan_property
=
1448 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1450 dev
->mode_config
.tv_saturation_property
=
1451 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1453 dev
->mode_config
.tv_hue_property
=
1454 drm_property_create_range(dev
, 0, "hue", 0, 100);
1458 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1461 * drm_mode_create_scaling_mode_property - create scaling mode property
1464 * Called by a driver the first time it's needed, must be attached to desired
1467 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1469 struct drm_property
*scaling_mode
;
1471 if (dev
->mode_config
.scaling_mode_property
)
1475 drm_property_create_enum(dev
, 0, "scaling mode",
1476 drm_scaling_mode_enum_list
,
1477 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1479 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1483 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1486 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1489 * Called by a driver the first time it's needed, must be attached to desired
1493 * Zero on success, errno on failure.
1495 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1497 if (dev
->mode_config
.aspect_ratio_property
)
1500 dev
->mode_config
.aspect_ratio_property
=
1501 drm_property_create_enum(dev
, 0, "aspect ratio",
1502 drm_aspect_ratio_enum_list
,
1503 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1505 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1510 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1513 * drm_mode_create_dirty_property - create dirty property
1516 * Called by a driver the first time it's needed, must be attached to desired
1519 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1521 struct drm_property
*dirty_info
;
1523 if (dev
->mode_config
.dirty_info_property
)
1527 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1529 drm_dirty_info_enum_list
,
1530 ARRAY_SIZE(drm_dirty_info_enum_list
));
1531 dev
->mode_config
.dirty_info_property
= dirty_info
;
1535 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1537 static int drm_mode_group_init(struct drm_device
*dev
, struct drm_mode_group
*group
)
1539 uint32_t total_objects
= 0;
1541 total_objects
+= dev
->mode_config
.num_crtc
;
1542 total_objects
+= dev
->mode_config
.num_connector
;
1543 total_objects
+= dev
->mode_config
.num_encoder
;
1544 total_objects
+= dev
->mode_config
.num_bridge
;
1546 group
->id_list
= kzalloc(total_objects
* sizeof(uint32_t), GFP_KERNEL
);
1547 if (!group
->id_list
)
1550 group
->num_crtcs
= 0;
1551 group
->num_connectors
= 0;
1552 group
->num_encoders
= 0;
1553 group
->num_bridges
= 0;
1557 void drm_mode_group_destroy(struct drm_mode_group
*group
)
1559 kfree(group
->id_list
);
1560 group
->id_list
= NULL
;
1564 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1565 * the drm core's responsibility to set up mode control groups.
1567 int drm_mode_group_init_legacy_group(struct drm_device
*dev
,
1568 struct drm_mode_group
*group
)
1570 struct drm_crtc
*crtc
;
1571 struct drm_encoder
*encoder
;
1572 struct drm_connector
*connector
;
1573 struct drm_bridge
*bridge
;
1576 if ((ret
= drm_mode_group_init(dev
, group
)))
1579 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
1580 group
->id_list
[group
->num_crtcs
++] = crtc
->base
.id
;
1582 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
1583 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
++] =
1586 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1587 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1588 group
->num_connectors
++] = connector
->base
.id
;
1590 list_for_each_entry(bridge
, &dev
->mode_config
.bridge_list
, head
)
1591 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1592 group
->num_connectors
+ group
->num_bridges
++] =
1597 EXPORT_SYMBOL(drm_mode_group_init_legacy_group
);
1599 void drm_reinit_primary_mode_group(struct drm_device
*dev
)
1601 drm_modeset_lock_all(dev
);
1602 drm_mode_group_destroy(&dev
->primary
->mode_group
);
1603 drm_mode_group_init_legacy_group(dev
, &dev
->primary
->mode_group
);
1604 drm_modeset_unlock_all(dev
);
1606 EXPORT_SYMBOL(drm_reinit_primary_mode_group
);
1609 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1610 * @out: drm_mode_modeinfo struct to return to the user
1611 * @in: drm_display_mode to use
1613 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1616 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo
*out
,
1617 const struct drm_display_mode
*in
)
1619 WARN(in
->hdisplay
> USHRT_MAX
|| in
->hsync_start
> USHRT_MAX
||
1620 in
->hsync_end
> USHRT_MAX
|| in
->htotal
> USHRT_MAX
||
1621 in
->hskew
> USHRT_MAX
|| in
->vdisplay
> USHRT_MAX
||
1622 in
->vsync_start
> USHRT_MAX
|| in
->vsync_end
> USHRT_MAX
||
1623 in
->vtotal
> USHRT_MAX
|| in
->vscan
> USHRT_MAX
,
1624 "timing values too large for mode info\n");
1626 out
->clock
= in
->clock
;
1627 out
->hdisplay
= in
->hdisplay
;
1628 out
->hsync_start
= in
->hsync_start
;
1629 out
->hsync_end
= in
->hsync_end
;
1630 out
->htotal
= in
->htotal
;
1631 out
->hskew
= in
->hskew
;
1632 out
->vdisplay
= in
->vdisplay
;
1633 out
->vsync_start
= in
->vsync_start
;
1634 out
->vsync_end
= in
->vsync_end
;
1635 out
->vtotal
= in
->vtotal
;
1636 out
->vscan
= in
->vscan
;
1637 out
->vrefresh
= in
->vrefresh
;
1638 out
->flags
= in
->flags
;
1639 out
->type
= in
->type
;
1640 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1641 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1645 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1646 * @out: drm_display_mode to return to the user
1647 * @in: drm_mode_modeinfo to use
1649 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1653 * Zero on success, errno on failure.
1655 static int drm_crtc_convert_umode(struct drm_display_mode
*out
,
1656 const struct drm_mode_modeinfo
*in
)
1658 if (in
->clock
> INT_MAX
|| in
->vrefresh
> INT_MAX
)
1661 if ((in
->flags
& DRM_MODE_FLAG_3D_MASK
) > DRM_MODE_FLAG_3D_MAX
)
1664 out
->clock
= in
->clock
;
1665 out
->hdisplay
= in
->hdisplay
;
1666 out
->hsync_start
= in
->hsync_start
;
1667 out
->hsync_end
= in
->hsync_end
;
1668 out
->htotal
= in
->htotal
;
1669 out
->hskew
= in
->hskew
;
1670 out
->vdisplay
= in
->vdisplay
;
1671 out
->vsync_start
= in
->vsync_start
;
1672 out
->vsync_end
= in
->vsync_end
;
1673 out
->vtotal
= in
->vtotal
;
1674 out
->vscan
= in
->vscan
;
1675 out
->vrefresh
= in
->vrefresh
;
1676 out
->flags
= in
->flags
;
1677 out
->type
= in
->type
;
1678 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1679 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1685 * drm_mode_getresources - get graphics configuration
1686 * @dev: drm device for the ioctl
1687 * @data: data pointer for the ioctl
1688 * @file_priv: drm file for the ioctl call
1690 * Construct a set of configuration description structures and return
1691 * them to the user, including CRTC, connector and framebuffer configuration.
1693 * Called by the user via ioctl.
1696 * Zero on success, errno on failure.
1698 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1699 struct drm_file
*file_priv
)
1701 struct drm_mode_card_res
*card_res
= data
;
1702 struct list_head
*lh
;
1703 struct drm_framebuffer
*fb
;
1704 struct drm_connector
*connector
;
1705 struct drm_crtc
*crtc
;
1706 struct drm_encoder
*encoder
;
1708 int connector_count
= 0;
1711 int encoder_count
= 0;
1713 uint32_t __user
*fb_id
;
1714 uint32_t __user
*crtc_id
;
1715 uint32_t __user
*connector_id
;
1716 uint32_t __user
*encoder_id
;
1717 struct drm_mode_group
*mode_group
;
1719 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1723 mutex_lock(&file_priv
->fbs_lock
);
1725 * For the non-control nodes we need to limit the list of resources
1726 * by IDs in the group list for this node
1728 list_for_each(lh
, &file_priv
->fbs
)
1731 /* handle this in 4 parts */
1733 if (card_res
->count_fbs
>= fb_count
) {
1735 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1736 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1737 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1738 mutex_unlock(&file_priv
->fbs_lock
);
1744 card_res
->count_fbs
= fb_count
;
1745 mutex_unlock(&file_priv
->fbs_lock
);
1747 drm_modeset_lock_all(dev
);
1748 if (!drm_is_primary_client(file_priv
)) {
1751 list_for_each(lh
, &dev
->mode_config
.crtc_list
)
1754 list_for_each(lh
, &dev
->mode_config
.connector_list
)
1757 list_for_each(lh
, &dev
->mode_config
.encoder_list
)
1761 mode_group
= &file_priv
->master
->minor
->mode_group
;
1762 crtc_count
= mode_group
->num_crtcs
;
1763 connector_count
= mode_group
->num_connectors
;
1764 encoder_count
= mode_group
->num_encoders
;
1767 card_res
->max_height
= dev
->mode_config
.max_height
;
1768 card_res
->min_height
= dev
->mode_config
.min_height
;
1769 card_res
->max_width
= dev
->mode_config
.max_width
;
1770 card_res
->min_width
= dev
->mode_config
.min_width
;
1773 if (card_res
->count_crtcs
>= crtc_count
) {
1775 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1777 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
,
1779 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1780 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1787 for (i
= 0; i
< mode_group
->num_crtcs
; i
++) {
1788 if (put_user(mode_group
->id_list
[i
],
1789 crtc_id
+ copied
)) {
1797 card_res
->count_crtcs
= crtc_count
;
1800 if (card_res
->count_encoders
>= encoder_count
) {
1802 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1804 list_for_each_entry(encoder
,
1805 &dev
->mode_config
.encoder_list
,
1807 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1809 if (put_user(encoder
->base
.id
, encoder_id
+
1817 for (i
= mode_group
->num_crtcs
; i
< mode_group
->num_crtcs
+ mode_group
->num_encoders
; i
++) {
1818 if (put_user(mode_group
->id_list
[i
],
1819 encoder_id
+ copied
)) {
1828 card_res
->count_encoders
= encoder_count
;
1831 if (card_res
->count_connectors
>= connector_count
) {
1833 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1835 list_for_each_entry(connector
,
1836 &dev
->mode_config
.connector_list
,
1838 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1841 if (put_user(connector
->base
.id
,
1842 connector_id
+ copied
)) {
1849 int start
= mode_group
->num_crtcs
+
1850 mode_group
->num_encoders
;
1851 for (i
= start
; i
< start
+ mode_group
->num_connectors
; i
++) {
1852 if (put_user(mode_group
->id_list
[i
],
1853 connector_id
+ copied
)) {
1861 card_res
->count_connectors
= connector_count
;
1863 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1864 card_res
->count_connectors
, card_res
->count_encoders
);
1867 drm_modeset_unlock_all(dev
);
1872 * drm_mode_getcrtc - get CRTC configuration
1873 * @dev: drm device for the ioctl
1874 * @data: data pointer for the ioctl
1875 * @file_priv: drm file for the ioctl call
1877 * Construct a CRTC configuration structure to return to the user.
1879 * Called by the user via ioctl.
1882 * Zero on success, errno on failure.
1884 int drm_mode_getcrtc(struct drm_device
*dev
,
1885 void *data
, struct drm_file
*file_priv
)
1887 struct drm_mode_crtc
*crtc_resp
= data
;
1888 struct drm_crtc
*crtc
;
1891 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1894 drm_modeset_lock_all(dev
);
1896 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
1902 crtc_resp
->x
= crtc
->x
;
1903 crtc_resp
->y
= crtc
->y
;
1904 crtc_resp
->gamma_size
= crtc
->gamma_size
;
1905 if (crtc
->primary
->fb
)
1906 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
1908 crtc_resp
->fb_id
= 0;
1910 if (crtc
->enabled
) {
1912 drm_crtc_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
1913 crtc_resp
->mode_valid
= 1;
1916 crtc_resp
->mode_valid
= 0;
1920 drm_modeset_unlock_all(dev
);
1924 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1925 const struct drm_file
*file_priv
)
1928 * If user-space hasn't configured the driver to expose the stereo 3D
1929 * modes, don't expose them.
1931 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
1938 * drm_mode_getconnector - get connector configuration
1939 * @dev: drm device for the ioctl
1940 * @data: data pointer for the ioctl
1941 * @file_priv: drm file for the ioctl call
1943 * Construct a connector configuration structure to return to the user.
1945 * Called by the user via ioctl.
1948 * Zero on success, errno on failure.
1950 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
1951 struct drm_file
*file_priv
)
1953 struct drm_mode_get_connector
*out_resp
= data
;
1954 struct drm_connector
*connector
;
1955 struct drm_display_mode
*mode
;
1957 int props_count
= 0;
1958 int encoders_count
= 0;
1962 struct drm_mode_modeinfo u_mode
;
1963 struct drm_mode_modeinfo __user
*mode_ptr
;
1964 uint32_t __user
*prop_ptr
;
1965 uint64_t __user
*prop_values
;
1966 uint32_t __user
*encoder_ptr
;
1968 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1971 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
1973 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
1975 mutex_lock(&dev
->mode_config
.mutex
);
1977 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
1983 props_count
= connector
->properties
.count
;
1985 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
1986 if (connector
->encoder_ids
[i
] != 0) {
1991 if (out_resp
->count_modes
== 0) {
1992 connector
->funcs
->fill_modes(connector
,
1993 dev
->mode_config
.max_width
,
1994 dev
->mode_config
.max_height
);
1997 /* delayed so we get modes regardless of pre-fill_modes state */
1998 list_for_each_entry(mode
, &connector
->modes
, head
)
1999 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2002 out_resp
->connector_id
= connector
->base
.id
;
2003 out_resp
->connector_type
= connector
->connector_type
;
2004 out_resp
->connector_type_id
= connector
->connector_type_id
;
2005 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2006 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2007 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2008 out_resp
->connection
= connector
->status
;
2009 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2010 if (connector
->encoder
)
2011 out_resp
->encoder_id
= connector
->encoder
->base
.id
;
2013 out_resp
->encoder_id
= 0;
2014 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2017 * This ioctl is called twice, once to determine how much space is
2018 * needed, and the 2nd time to fill it.
2020 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2022 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2023 list_for_each_entry(mode
, &connector
->modes
, head
) {
2024 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2027 drm_crtc_convert_to_umode(&u_mode
, mode
);
2028 if (copy_to_user(mode_ptr
+ copied
,
2029 &u_mode
, sizeof(u_mode
))) {
2036 out_resp
->count_modes
= mode_count
;
2038 if ((out_resp
->count_props
>= props_count
) && props_count
) {
2040 prop_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
);
2041 prop_values
= (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
);
2042 for (i
= 0; i
< connector
->properties
.count
; i
++) {
2043 if (put_user(connector
->properties
.ids
[i
],
2044 prop_ptr
+ copied
)) {
2049 if (put_user(connector
->properties
.values
[i
],
2050 prop_values
+ copied
)) {
2057 out_resp
->count_props
= props_count
;
2059 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2061 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2062 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2063 if (connector
->encoder_ids
[i
] != 0) {
2064 if (put_user(connector
->encoder_ids
[i
],
2065 encoder_ptr
+ copied
)) {
2073 out_resp
->count_encoders
= encoders_count
;
2076 mutex_unlock(&dev
->mode_config
.mutex
);
2082 * drm_mode_getencoder - get encoder configuration
2083 * @dev: drm device for the ioctl
2084 * @data: data pointer for the ioctl
2085 * @file_priv: drm file for the ioctl call
2087 * Construct a encoder configuration structure to return to the user.
2089 * Called by the user via ioctl.
2092 * Zero on success, errno on failure.
2094 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2095 struct drm_file
*file_priv
)
2097 struct drm_mode_get_encoder
*enc_resp
= data
;
2098 struct drm_encoder
*encoder
;
2101 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2104 drm_modeset_lock_all(dev
);
2105 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2112 enc_resp
->crtc_id
= encoder
->crtc
->base
.id
;
2114 enc_resp
->crtc_id
= 0;
2115 enc_resp
->encoder_type
= encoder
->encoder_type
;
2116 enc_resp
->encoder_id
= encoder
->base
.id
;
2117 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2118 enc_resp
->possible_clones
= encoder
->possible_clones
;
2121 drm_modeset_unlock_all(dev
);
2126 * drm_mode_getplane_res - enumerate all plane resources
2129 * @file_priv: DRM file info
2131 * Construct a list of plane ids to return to the user.
2133 * Called by the user via ioctl.
2136 * Zero on success, errno on failure.
2138 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2139 struct drm_file
*file_priv
)
2141 struct drm_mode_get_plane_res
*plane_resp
= data
;
2142 struct drm_mode_config
*config
;
2143 struct drm_plane
*plane
;
2144 uint32_t __user
*plane_ptr
;
2145 int copied
= 0, ret
= 0;
2146 unsigned num_planes
;
2148 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2151 drm_modeset_lock_all(dev
);
2152 config
= &dev
->mode_config
;
2154 if (file_priv
->universal_planes
)
2155 num_planes
= config
->num_total_plane
;
2157 num_planes
= config
->num_overlay_plane
;
2160 * This ioctl is called twice, once to determine how much space is
2161 * needed, and the 2nd time to fill it.
2164 (plane_resp
->count_planes
>= num_planes
)) {
2165 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2167 list_for_each_entry(plane
, &config
->plane_list
, head
) {
2169 * Unless userspace set the 'universal planes'
2170 * capability bit, only advertise overlays.
2172 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2173 !file_priv
->universal_planes
)
2176 if (put_user(plane
->base
.id
, plane_ptr
+ copied
)) {
2183 plane_resp
->count_planes
= num_planes
;
2186 drm_modeset_unlock_all(dev
);
2191 * drm_mode_getplane - get plane configuration
2194 * @file_priv: DRM file info
2196 * Construct a plane configuration structure to return to the user.
2198 * Called by the user via ioctl.
2201 * Zero on success, errno on failure.
2203 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2204 struct drm_file
*file_priv
)
2206 struct drm_mode_get_plane
*plane_resp
= data
;
2207 struct drm_plane
*plane
;
2208 uint32_t __user
*format_ptr
;
2211 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2214 drm_modeset_lock_all(dev
);
2215 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2222 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2224 plane_resp
->crtc_id
= 0;
2227 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2229 plane_resp
->fb_id
= 0;
2231 plane_resp
->plane_id
= plane
->base
.id
;
2232 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2233 plane_resp
->gamma_size
= 0;
2236 * This ioctl is called twice, once to determine how much space is
2237 * needed, and the 2nd time to fill it.
2239 if (plane
->format_count
&&
2240 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2241 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2242 if (copy_to_user(format_ptr
,
2243 plane
->format_types
,
2244 sizeof(uint32_t) * plane
->format_count
)) {
2249 plane_resp
->count_format_types
= plane
->format_count
;
2252 drm_modeset_unlock_all(dev
);
2257 * setplane_internal - setplane handler for internal callers
2259 * Note that we assume an extra reference has already been taken on fb. If the
2260 * update fails, this reference will be dropped before return; if it succeeds,
2261 * the previous framebuffer (if any) will be unreferenced instead.
2263 * src_{x,y,w,h} are provided in 16.16 fixed point format
2265 static int __setplane_internal(struct drm_plane
*plane
,
2266 struct drm_crtc
*crtc
,
2267 struct drm_framebuffer
*fb
,
2268 int32_t crtc_x
, int32_t crtc_y
,
2269 uint32_t crtc_w
, uint32_t crtc_h
,
2270 /* src_{x,y,w,h} values are 16.16 fixed point */
2271 uint32_t src_x
, uint32_t src_y
,
2272 uint32_t src_w
, uint32_t src_h
)
2275 unsigned int fb_width
, fb_height
;
2278 /* No fb means shut it down */
2280 plane
->old_fb
= plane
->fb
;
2281 ret
= plane
->funcs
->disable_plane(plane
);
2286 plane
->old_fb
= NULL
;
2291 /* Check whether this plane is usable on this CRTC */
2292 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2293 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2298 /* Check whether this plane supports the fb pixel format. */
2299 for (i
= 0; i
< plane
->format_count
; i
++)
2300 if (fb
->pixel_format
== plane
->format_types
[i
])
2302 if (i
== plane
->format_count
) {
2303 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2304 drm_get_format_name(fb
->pixel_format
));
2309 fb_width
= fb
->width
<< 16;
2310 fb_height
= fb
->height
<< 16;
2312 /* Make sure source coordinates are inside the fb. */
2313 if (src_w
> fb_width
||
2314 src_x
> fb_width
- src_w
||
2315 src_h
> fb_height
||
2316 src_y
> fb_height
- src_h
) {
2317 DRM_DEBUG_KMS("Invalid source coordinates "
2318 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2319 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2320 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2321 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2322 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2327 plane
->old_fb
= plane
->fb
;
2328 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2329 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2330 src_x
, src_y
, src_w
, src_h
);
2336 plane
->old_fb
= NULL
;
2341 drm_framebuffer_unreference(fb
);
2343 drm_framebuffer_unreference(plane
->old_fb
);
2344 plane
->old_fb
= NULL
;
2349 static int setplane_internal(struct drm_plane
*plane
,
2350 struct drm_crtc
*crtc
,
2351 struct drm_framebuffer
*fb
,
2352 int32_t crtc_x
, int32_t crtc_y
,
2353 uint32_t crtc_w
, uint32_t crtc_h
,
2354 /* src_{x,y,w,h} values are 16.16 fixed point */
2355 uint32_t src_x
, uint32_t src_y
,
2356 uint32_t src_w
, uint32_t src_h
)
2360 drm_modeset_lock_all(plane
->dev
);
2361 ret
= __setplane_internal(plane
, crtc
, fb
,
2362 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2363 src_x
, src_y
, src_w
, src_h
);
2364 drm_modeset_unlock_all(plane
->dev
);
2370 * drm_mode_setplane - configure a plane's configuration
2372 * @data: ioctl data*
2373 * @file_priv: DRM file info
2375 * Set plane configuration, including placement, fb, scaling, and other factors.
2376 * Or pass a NULL fb to disable (planes may be disabled without providing a
2380 * Zero on success, errno on failure.
2382 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2383 struct drm_file
*file_priv
)
2385 struct drm_mode_set_plane
*plane_req
= data
;
2386 struct drm_mode_object
*obj
;
2387 struct drm_plane
*plane
;
2388 struct drm_crtc
*crtc
= NULL
;
2389 struct drm_framebuffer
*fb
= NULL
;
2391 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2394 /* Give drivers some help against integer overflows */
2395 if (plane_req
->crtc_w
> INT_MAX
||
2396 plane_req
->crtc_x
> INT_MAX
- (int32_t) plane_req
->crtc_w
||
2397 plane_req
->crtc_h
> INT_MAX
||
2398 plane_req
->crtc_y
> INT_MAX
- (int32_t) plane_req
->crtc_h
) {
2399 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2400 plane_req
->crtc_w
, plane_req
->crtc_h
,
2401 plane_req
->crtc_x
, plane_req
->crtc_y
);
2406 * First, find the plane, crtc, and fb objects. If not available,
2407 * we don't bother to call the driver.
2409 obj
= drm_mode_object_find(dev
, plane_req
->plane_id
,
2410 DRM_MODE_OBJECT_PLANE
);
2412 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2413 plane_req
->plane_id
);
2416 plane
= obj_to_plane(obj
);
2418 if (plane_req
->fb_id
) {
2419 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2421 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2426 obj
= drm_mode_object_find(dev
, plane_req
->crtc_id
,
2427 DRM_MODE_OBJECT_CRTC
);
2429 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2430 plane_req
->crtc_id
);
2433 crtc
= obj_to_crtc(obj
);
2437 * setplane_internal will take care of deref'ing either the old or new
2438 * framebuffer depending on success.
2440 return setplane_internal(plane
, crtc
, fb
,
2441 plane_req
->crtc_x
, plane_req
->crtc_y
,
2442 plane_req
->crtc_w
, plane_req
->crtc_h
,
2443 plane_req
->src_x
, plane_req
->src_y
,
2444 plane_req
->src_w
, plane_req
->src_h
);
2448 * drm_mode_set_config_internal - helper to call ->set_config
2449 * @set: modeset config to set
2451 * This is a little helper to wrap internal calls to the ->set_config driver
2452 * interface. The only thing it adds is correct refcounting dance.
2455 * Zero on success, errno on failure.
2457 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2459 struct drm_crtc
*crtc
= set
->crtc
;
2460 struct drm_framebuffer
*fb
;
2461 struct drm_crtc
*tmp
;
2465 * NOTE: ->set_config can also disable other crtcs (if we steal all
2466 * connectors from it), hence we need to refcount the fbs across all
2467 * crtcs. Atomic modeset will have saner semantics ...
2469 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
)
2470 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2474 ret
= crtc
->funcs
->set_config(set
);
2476 crtc
->primary
->crtc
= crtc
;
2477 crtc
->primary
->fb
= fb
;
2480 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
2481 if (tmp
->primary
->fb
)
2482 drm_framebuffer_reference(tmp
->primary
->fb
);
2483 if (tmp
->primary
->old_fb
)
2484 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2485 tmp
->primary
->old_fb
= NULL
;
2490 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2493 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2495 * @crtc: CRTC that framebuffer will be displayed on
2498 * @mode: mode that framebuffer will be displayed under
2499 * @fb: framebuffer to check size of
2501 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2503 const struct drm_display_mode
*mode
,
2504 const struct drm_framebuffer
*fb
)
2507 int hdisplay
, vdisplay
;
2509 hdisplay
= mode
->hdisplay
;
2510 vdisplay
= mode
->vdisplay
;
2512 if (drm_mode_is_stereo(mode
)) {
2513 struct drm_display_mode adjusted
= *mode
;
2515 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE
);
2516 hdisplay
= adjusted
.crtc_hdisplay
;
2517 vdisplay
= adjusted
.crtc_vdisplay
;
2520 if (crtc
->invert_dimensions
)
2521 swap(hdisplay
, vdisplay
);
2523 if (hdisplay
> fb
->width
||
2524 vdisplay
> fb
->height
||
2525 x
> fb
->width
- hdisplay
||
2526 y
> fb
->height
- vdisplay
) {
2527 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2528 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2529 crtc
->invert_dimensions
? " (inverted)" : "");
2535 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2538 * drm_mode_setcrtc - set CRTC configuration
2539 * @dev: drm device for the ioctl
2540 * @data: data pointer for the ioctl
2541 * @file_priv: drm file for the ioctl call
2543 * Build a new CRTC configuration based on user request.
2545 * Called by the user via ioctl.
2548 * Zero on success, errno on failure.
2550 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2551 struct drm_file
*file_priv
)
2553 struct drm_mode_config
*config
= &dev
->mode_config
;
2554 struct drm_mode_crtc
*crtc_req
= data
;
2555 struct drm_crtc
*crtc
;
2556 struct drm_connector
**connector_set
= NULL
, *connector
;
2557 struct drm_framebuffer
*fb
= NULL
;
2558 struct drm_display_mode
*mode
= NULL
;
2559 struct drm_mode_set set
;
2560 uint32_t __user
*set_connectors_ptr
;
2564 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2567 /* For some reason crtc x/y offsets are signed internally. */
2568 if (crtc_req
->x
> INT_MAX
|| crtc_req
->y
> INT_MAX
)
2571 drm_modeset_lock_all(dev
);
2572 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2574 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2578 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2580 if (crtc_req
->mode_valid
) {
2581 /* If we have a mode we need a framebuffer. */
2582 /* If we pass -1, set the mode with the currently bound fb */
2583 if (crtc_req
->fb_id
== -1) {
2584 if (!crtc
->primary
->fb
) {
2585 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2589 fb
= crtc
->primary
->fb
;
2590 /* Make refcounting symmetric with the lookup path. */
2591 drm_framebuffer_reference(fb
);
2593 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2595 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2602 mode
= drm_mode_create(dev
);
2608 ret
= drm_crtc_convert_umode(mode
, &crtc_req
->mode
);
2610 DRM_DEBUG_KMS("Invalid mode\n");
2614 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2616 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2623 if (crtc_req
->count_connectors
== 0 && mode
) {
2624 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2629 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2630 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2631 crtc_req
->count_connectors
);
2636 if (crtc_req
->count_connectors
> 0) {
2639 /* Avoid unbounded kernel memory allocation */
2640 if (crtc_req
->count_connectors
> config
->num_connector
) {
2645 connector_set
= kmalloc(crtc_req
->count_connectors
*
2646 sizeof(struct drm_connector
*),
2648 if (!connector_set
) {
2653 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2654 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2655 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2660 connector
= drm_connector_find(dev
, out_id
);
2662 DRM_DEBUG_KMS("Connector id %d unknown\n",
2667 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2671 connector_set
[i
] = connector
;
2676 set
.x
= crtc_req
->x
;
2677 set
.y
= crtc_req
->y
;
2679 set
.connectors
= connector_set
;
2680 set
.num_connectors
= crtc_req
->count_connectors
;
2682 ret
= drm_mode_set_config_internal(&set
);
2686 drm_framebuffer_unreference(fb
);
2688 kfree(connector_set
);
2689 drm_mode_destroy(dev
, mode
);
2690 drm_modeset_unlock_all(dev
);
2695 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2696 * universal plane handler call
2697 * @crtc: crtc to update cursor for
2698 * @req: data pointer for the ioctl
2699 * @file_priv: drm file for the ioctl call
2701 * Legacy cursor ioctl's work directly with driver buffer handles. To
2702 * translate legacy ioctl calls into universal plane handler calls, we need to
2703 * wrap the native buffer handle in a drm_framebuffer.
2705 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2706 * buffer with a pitch of 4*width; the universal plane interface should be used
2707 * directly in cases where the hardware can support other buffer settings and
2708 * userspace wants to make use of these capabilities.
2711 * Zero on success, errno on failure.
2713 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2714 struct drm_mode_cursor2
*req
,
2715 struct drm_file
*file_priv
)
2717 struct drm_device
*dev
= crtc
->dev
;
2718 struct drm_framebuffer
*fb
= NULL
;
2719 struct drm_mode_fb_cmd2 fbreq
= {
2720 .width
= req
->width
,
2721 .height
= req
->height
,
2722 .pixel_format
= DRM_FORMAT_ARGB8888
,
2723 .pitches
= { req
->width
* 4 },
2724 .handles
= { req
->handle
},
2726 int32_t crtc_x
, crtc_y
;
2727 uint32_t crtc_w
= 0, crtc_h
= 0;
2728 uint32_t src_w
= 0, src_h
= 0;
2731 BUG_ON(!crtc
->cursor
);
2732 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2735 * Obtain fb we'll be using (either new or existing) and take an extra
2736 * reference to it if fb != null. setplane will take care of dropping
2737 * the reference if the plane update fails.
2739 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2741 fb
= add_framebuffer_internal(dev
, &fbreq
, file_priv
);
2743 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2747 drm_framebuffer_reference(fb
);
2752 fb
= crtc
->cursor
->fb
;
2754 drm_framebuffer_reference(fb
);
2757 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2761 crtc_x
= crtc
->cursor_x
;
2762 crtc_y
= crtc
->cursor_y
;
2767 crtc_h
= fb
->height
;
2768 src_w
= fb
->width
<< 16;
2769 src_h
= fb
->height
<< 16;
2773 * setplane_internal will take care of deref'ing either the old or new
2774 * framebuffer depending on success.
2776 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2777 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2778 0, 0, src_w
, src_h
);
2780 /* Update successful; save new cursor position, if necessary */
2781 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2782 crtc
->cursor_x
= req
->x
;
2783 crtc
->cursor_y
= req
->y
;
2789 static int drm_mode_cursor_common(struct drm_device
*dev
,
2790 struct drm_mode_cursor2
*req
,
2791 struct drm_file
*file_priv
)
2793 struct drm_crtc
*crtc
;
2796 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2799 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2802 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2804 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2809 * If this crtc has a universal cursor plane, call that plane's update
2810 * handler rather than using legacy cursor handlers.
2812 drm_modeset_lock_crtc(crtc
);
2814 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2818 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2819 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2823 /* Turns off the cursor if handle is 0 */
2824 if (crtc
->funcs
->cursor_set2
)
2825 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2826 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2828 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2829 req
->width
, req
->height
);
2832 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2833 if (crtc
->funcs
->cursor_move
) {
2834 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
2841 drm_modeset_unlock_crtc(crtc
);
2849 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2850 * @dev: drm device for the ioctl
2851 * @data: data pointer for the ioctl
2852 * @file_priv: drm file for the ioctl call
2854 * Set the cursor configuration based on user request.
2856 * Called by the user via ioctl.
2859 * Zero on success, errno on failure.
2861 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
2862 void *data
, struct drm_file
*file_priv
)
2864 struct drm_mode_cursor
*req
= data
;
2865 struct drm_mode_cursor2 new_req
;
2867 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
2868 new_req
.hot_x
= new_req
.hot_y
= 0;
2870 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
2874 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2875 * @dev: drm device for the ioctl
2876 * @data: data pointer for the ioctl
2877 * @file_priv: drm file for the ioctl call
2879 * Set the cursor configuration based on user request. This implements the 2nd
2880 * version of the cursor ioctl, which allows userspace to additionally specify
2881 * the hotspot of the pointer.
2883 * Called by the user via ioctl.
2886 * Zero on success, errno on failure.
2888 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
2889 void *data
, struct drm_file
*file_priv
)
2891 struct drm_mode_cursor2
*req
= data
;
2892 return drm_mode_cursor_common(dev
, req
, file_priv
);
2896 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2897 * @bpp: bits per pixels
2898 * @depth: bit depth per pixel
2900 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2901 * Useful in fbdev emulation code, since that deals in those values.
2903 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
2909 fmt
= DRM_FORMAT_C8
;
2913 fmt
= DRM_FORMAT_XRGB1555
;
2915 fmt
= DRM_FORMAT_RGB565
;
2918 fmt
= DRM_FORMAT_RGB888
;
2922 fmt
= DRM_FORMAT_XRGB8888
;
2923 else if (depth
== 30)
2924 fmt
= DRM_FORMAT_XRGB2101010
;
2926 fmt
= DRM_FORMAT_ARGB8888
;
2929 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2930 fmt
= DRM_FORMAT_XRGB8888
;
2936 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
2939 * drm_mode_addfb - add an FB to the graphics configuration
2940 * @dev: drm device for the ioctl
2941 * @data: data pointer for the ioctl
2942 * @file_priv: drm file for the ioctl call
2944 * Add a new FB to the specified CRTC, given a user request. This is the
2945 * original addfb ioctl which only supported RGB formats.
2947 * Called by the user via ioctl.
2950 * Zero on success, errno on failure.
2952 int drm_mode_addfb(struct drm_device
*dev
,
2953 void *data
, struct drm_file
*file_priv
)
2955 struct drm_mode_fb_cmd
*or = data
;
2956 struct drm_mode_fb_cmd2 r
= {};
2959 /* convert to new format and call new ioctl */
2960 r
.fb_id
= or->fb_id
;
2961 r
.width
= or->width
;
2962 r
.height
= or->height
;
2963 r
.pitches
[0] = or->pitch
;
2964 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
2965 r
.handles
[0] = or->handle
;
2967 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
2971 or->fb_id
= r
.fb_id
;
2976 static int format_check(const struct drm_mode_fb_cmd2
*r
)
2978 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
2982 case DRM_FORMAT_RGB332
:
2983 case DRM_FORMAT_BGR233
:
2984 case DRM_FORMAT_XRGB4444
:
2985 case DRM_FORMAT_XBGR4444
:
2986 case DRM_FORMAT_RGBX4444
:
2987 case DRM_FORMAT_BGRX4444
:
2988 case DRM_FORMAT_ARGB4444
:
2989 case DRM_FORMAT_ABGR4444
:
2990 case DRM_FORMAT_RGBA4444
:
2991 case DRM_FORMAT_BGRA4444
:
2992 case DRM_FORMAT_XRGB1555
:
2993 case DRM_FORMAT_XBGR1555
:
2994 case DRM_FORMAT_RGBX5551
:
2995 case DRM_FORMAT_BGRX5551
:
2996 case DRM_FORMAT_ARGB1555
:
2997 case DRM_FORMAT_ABGR1555
:
2998 case DRM_FORMAT_RGBA5551
:
2999 case DRM_FORMAT_BGRA5551
:
3000 case DRM_FORMAT_RGB565
:
3001 case DRM_FORMAT_BGR565
:
3002 case DRM_FORMAT_RGB888
:
3003 case DRM_FORMAT_BGR888
:
3004 case DRM_FORMAT_XRGB8888
:
3005 case DRM_FORMAT_XBGR8888
:
3006 case DRM_FORMAT_RGBX8888
:
3007 case DRM_FORMAT_BGRX8888
:
3008 case DRM_FORMAT_ARGB8888
:
3009 case DRM_FORMAT_ABGR8888
:
3010 case DRM_FORMAT_RGBA8888
:
3011 case DRM_FORMAT_BGRA8888
:
3012 case DRM_FORMAT_XRGB2101010
:
3013 case DRM_FORMAT_XBGR2101010
:
3014 case DRM_FORMAT_RGBX1010102
:
3015 case DRM_FORMAT_BGRX1010102
:
3016 case DRM_FORMAT_ARGB2101010
:
3017 case DRM_FORMAT_ABGR2101010
:
3018 case DRM_FORMAT_RGBA1010102
:
3019 case DRM_FORMAT_BGRA1010102
:
3020 case DRM_FORMAT_YUYV
:
3021 case DRM_FORMAT_YVYU
:
3022 case DRM_FORMAT_UYVY
:
3023 case DRM_FORMAT_VYUY
:
3024 case DRM_FORMAT_AYUV
:
3025 case DRM_FORMAT_NV12
:
3026 case DRM_FORMAT_NV21
:
3027 case DRM_FORMAT_NV16
:
3028 case DRM_FORMAT_NV61
:
3029 case DRM_FORMAT_NV24
:
3030 case DRM_FORMAT_NV42
:
3031 case DRM_FORMAT_YUV410
:
3032 case DRM_FORMAT_YVU410
:
3033 case DRM_FORMAT_YUV411
:
3034 case DRM_FORMAT_YVU411
:
3035 case DRM_FORMAT_YUV420
:
3036 case DRM_FORMAT_YVU420
:
3037 case DRM_FORMAT_YUV422
:
3038 case DRM_FORMAT_YVU422
:
3039 case DRM_FORMAT_YUV444
:
3040 case DRM_FORMAT_YVU444
:
3043 DRM_DEBUG_KMS("invalid pixel format %s\n",
3044 drm_get_format_name(r
->pixel_format
));
3049 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3051 int ret
, hsub
, vsub
, num_planes
, i
;
3053 ret
= format_check(r
);
3055 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3056 drm_get_format_name(r
->pixel_format
));
3060 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3061 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3062 num_planes
= drm_format_num_planes(r
->pixel_format
);
3064 if (r
->width
== 0 || r
->width
% hsub
) {
3065 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3069 if (r
->height
== 0 || r
->height
% vsub
) {
3070 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3074 for (i
= 0; i
< num_planes
; i
++) {
3075 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3076 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3077 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3079 if (!r
->handles
[i
]) {
3080 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3084 if ((uint64_t) width
* cpp
> UINT_MAX
)
3087 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3090 if (r
->pitches
[i
] < width
* cpp
) {
3091 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3099 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
3100 struct drm_mode_fb_cmd2
*r
,
3101 struct drm_file
*file_priv
)
3103 struct drm_mode_config
*config
= &dev
->mode_config
;
3104 struct drm_framebuffer
*fb
;
3107 if (r
->flags
& ~DRM_MODE_FB_INTERLACED
) {
3108 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3109 return ERR_PTR(-EINVAL
);
3112 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3113 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3114 r
->width
, config
->min_width
, config
->max_width
);
3115 return ERR_PTR(-EINVAL
);
3117 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3118 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3119 r
->height
, config
->min_height
, config
->max_height
);
3120 return ERR_PTR(-EINVAL
);
3123 ret
= framebuffer_check(r
);
3125 return ERR_PTR(ret
);
3127 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3129 DRM_DEBUG_KMS("could not create framebuffer\n");
3133 mutex_lock(&file_priv
->fbs_lock
);
3134 r
->fb_id
= fb
->base
.id
;
3135 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3136 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3137 mutex_unlock(&file_priv
->fbs_lock
);
3143 * drm_mode_addfb2 - add an FB to the graphics configuration
3144 * @dev: drm device for the ioctl
3145 * @data: data pointer for the ioctl
3146 * @file_priv: drm file for the ioctl call
3148 * Add a new FB to the specified CRTC, given a user request with format. This is
3149 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3150 * and uses fourcc codes as pixel format specifiers.
3152 * Called by the user via ioctl.
3155 * Zero on success, errno on failure.
3157 int drm_mode_addfb2(struct drm_device
*dev
,
3158 void *data
, struct drm_file
*file_priv
)
3160 struct drm_framebuffer
*fb
;
3162 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3165 fb
= add_framebuffer_internal(dev
, data
, file_priv
);
3173 * drm_mode_rmfb - remove an FB from the configuration
3174 * @dev: drm device for the ioctl
3175 * @data: data pointer for the ioctl
3176 * @file_priv: drm file for the ioctl call
3178 * Remove the FB specified by the user.
3180 * Called by the user via ioctl.
3183 * Zero on success, errno on failure.
3185 int drm_mode_rmfb(struct drm_device
*dev
,
3186 void *data
, struct drm_file
*file_priv
)
3188 struct drm_framebuffer
*fb
= NULL
;
3189 struct drm_framebuffer
*fbl
= NULL
;
3190 uint32_t *id
= data
;
3193 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3196 mutex_lock(&file_priv
->fbs_lock
);
3197 mutex_lock(&dev
->mode_config
.fb_lock
);
3198 fb
= __drm_framebuffer_lookup(dev
, *id
);
3202 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3208 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3209 __drm_framebuffer_unregister(dev
, fb
);
3211 list_del_init(&fb
->filp_head
);
3212 mutex_unlock(&dev
->mode_config
.fb_lock
);
3213 mutex_unlock(&file_priv
->fbs_lock
);
3215 drm_framebuffer_remove(fb
);
3220 mutex_unlock(&dev
->mode_config
.fb_lock
);
3221 mutex_unlock(&file_priv
->fbs_lock
);
3227 * drm_mode_getfb - get FB info
3228 * @dev: drm device for the ioctl
3229 * @data: data pointer for the ioctl
3230 * @file_priv: drm file for the ioctl call
3232 * Lookup the FB given its ID and return info about it.
3234 * Called by the user via ioctl.
3237 * Zero on success, errno on failure.
3239 int drm_mode_getfb(struct drm_device
*dev
,
3240 void *data
, struct drm_file
*file_priv
)
3242 struct drm_mode_fb_cmd
*r
= data
;
3243 struct drm_framebuffer
*fb
;
3246 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3249 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3253 r
->height
= fb
->height
;
3254 r
->width
= fb
->width
;
3255 r
->depth
= fb
->depth
;
3256 r
->bpp
= fb
->bits_per_pixel
;
3257 r
->pitch
= fb
->pitches
[0];
3258 if (fb
->funcs
->create_handle
) {
3259 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3260 drm_is_control_client(file_priv
)) {
3261 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3264 /* GET_FB() is an unprivileged ioctl so we must not
3265 * return a buffer-handle to non-master processes! For
3266 * backwards-compatibility reasons, we cannot make
3267 * GET_FB() privileged, so just return an invalid handle
3268 * for non-masters. */
3276 drm_framebuffer_unreference(fb
);
3282 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3283 * @dev: drm device for the ioctl
3284 * @data: data pointer for the ioctl
3285 * @file_priv: drm file for the ioctl call
3287 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3288 * rectangle list. Generic userspace which does frontbuffer rendering must call
3289 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3290 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3292 * Modesetting drivers which always update the frontbuffer do not need to
3293 * implement the corresponding ->dirty framebuffer callback.
3295 * Called by the user via ioctl.
3298 * Zero on success, errno on failure.
3300 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3301 void *data
, struct drm_file
*file_priv
)
3303 struct drm_clip_rect __user
*clips_ptr
;
3304 struct drm_clip_rect
*clips
= NULL
;
3305 struct drm_mode_fb_dirty_cmd
*r
= data
;
3306 struct drm_framebuffer
*fb
;
3311 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3314 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3318 num_clips
= r
->num_clips
;
3319 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3321 if (!num_clips
!= !clips_ptr
) {
3326 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3328 /* If userspace annotates copy, clips must come in pairs */
3329 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3334 if (num_clips
&& clips_ptr
) {
3335 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3339 clips
= kzalloc(num_clips
* sizeof(*clips
), GFP_KERNEL
);
3345 ret
= copy_from_user(clips
, clips_ptr
,
3346 num_clips
* sizeof(*clips
));
3353 if (fb
->funcs
->dirty
) {
3354 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3363 drm_framebuffer_unreference(fb
);
3370 * drm_fb_release - remove and free the FBs on this file
3371 * @priv: drm file for the ioctl
3373 * Destroy all the FBs associated with @filp.
3375 * Called by the user via ioctl.
3378 * Zero on success, errno on failure.
3380 void drm_fb_release(struct drm_file
*priv
)
3382 struct drm_device
*dev
= priv
->minor
->dev
;
3383 struct drm_framebuffer
*fb
, *tfb
;
3386 * When the file gets released that means no one else can access the fb
3387 * list any more, so no need to grab fpriv->fbs_lock. And we need to to
3388 * avoid upsetting lockdep since the universal cursor code adds a
3389 * framebuffer while holding mutex locks.
3391 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3392 * locks is impossible here since no one else but this function can get
3395 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3397 mutex_lock(&dev
->mode_config
.fb_lock
);
3398 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3399 __drm_framebuffer_unregister(dev
, fb
);
3400 mutex_unlock(&dev
->mode_config
.fb_lock
);
3402 list_del_init(&fb
->filp_head
);
3404 /* This will also drop the fpriv->fbs reference. */
3405 drm_framebuffer_remove(fb
);
3410 * drm_property_create - create a new property type
3412 * @flags: flags specifying the property type
3413 * @name: name of the property
3414 * @num_values: number of pre-defined values
3416 * This creates a new generic drm property which can then be attached to a drm
3417 * object with drm_object_attach_property. The returned property object must be
3418 * freed with drm_property_destroy.
3420 * Note that the DRM core keeps a per-device list of properties and that, if
3421 * drm_mode_config_cleanup() is called, it will destroy all properties created
3425 * A pointer to the newly created property on success, NULL on failure.
3427 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3428 const char *name
, int num_values
)
3430 struct drm_property
*property
= NULL
;
3433 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3437 property
->dev
= dev
;
3440 property
->values
= kzalloc(sizeof(uint64_t)*num_values
, GFP_KERNEL
);
3441 if (!property
->values
)
3445 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3449 property
->flags
= flags
;
3450 property
->num_values
= num_values
;
3451 INIT_LIST_HEAD(&property
->enum_blob_list
);
3454 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3455 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3458 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3460 WARN_ON(!drm_property_type_valid(property
));
3464 kfree(property
->values
);
3468 EXPORT_SYMBOL(drm_property_create
);
3471 * drm_property_create_enum - create a new enumeration property type
3473 * @flags: flags specifying the property type
3474 * @name: name of the property
3475 * @props: enumeration lists with property values
3476 * @num_values: number of pre-defined values
3478 * This creates a new generic drm property which can then be attached to a drm
3479 * object with drm_object_attach_property. The returned property object must be
3480 * freed with drm_property_destroy.
3482 * Userspace is only allowed to set one of the predefined values for enumeration
3486 * A pointer to the newly created property on success, NULL on failure.
3488 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3490 const struct drm_prop_enum_list
*props
,
3493 struct drm_property
*property
;
3496 flags
|= DRM_MODE_PROP_ENUM
;
3498 property
= drm_property_create(dev
, flags
, name
, num_values
);
3502 for (i
= 0; i
< num_values
; i
++) {
3503 ret
= drm_property_add_enum(property
, i
,
3507 drm_property_destroy(dev
, property
);
3514 EXPORT_SYMBOL(drm_property_create_enum
);
3517 * drm_property_create_bitmask - create a new bitmask property type
3519 * @flags: flags specifying the property type
3520 * @name: name of the property
3521 * @props: enumeration lists with property bitflags
3522 * @num_props: size of the @props array
3523 * @supported_bits: bitmask of all supported enumeration values
3525 * This creates a new bitmask drm property which can then be attached to a drm
3526 * object with drm_object_attach_property. The returned property object must be
3527 * freed with drm_property_destroy.
3529 * Compared to plain enumeration properties userspace is allowed to set any
3530 * or'ed together combination of the predefined property bitflag values
3533 * A pointer to the newly created property on success, NULL on failure.
3535 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3536 int flags
, const char *name
,
3537 const struct drm_prop_enum_list
*props
,
3539 uint64_t supported_bits
)
3541 struct drm_property
*property
;
3542 int i
, ret
, index
= 0;
3543 int num_values
= hweight64(supported_bits
);
3545 flags
|= DRM_MODE_PROP_BITMASK
;
3547 property
= drm_property_create(dev
, flags
, name
, num_values
);
3550 for (i
= 0; i
< num_props
; i
++) {
3551 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3554 if (WARN_ON(index
>= num_values
)) {
3555 drm_property_destroy(dev
, property
);
3559 ret
= drm_property_add_enum(property
, index
++,
3563 drm_property_destroy(dev
, property
);
3570 EXPORT_SYMBOL(drm_property_create_bitmask
);
3572 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3573 int flags
, const char *name
,
3574 uint64_t min
, uint64_t max
)
3576 struct drm_property
*property
;
3578 property
= drm_property_create(dev
, flags
, name
, 2);
3582 property
->values
[0] = min
;
3583 property
->values
[1] = max
;
3589 * drm_property_create_range - create a new ranged property type
3591 * @flags: flags specifying the property type
3592 * @name: name of the property
3593 * @min: minimum value of the property
3594 * @max: maximum value of the property
3596 * This creates a new generic drm property which can then be attached to a drm
3597 * object with drm_object_attach_property. The returned property object must be
3598 * freed with drm_property_destroy.
3600 * Userspace is allowed to set any integer value in the (min, max) range
3604 * A pointer to the newly created property on success, NULL on failure.
3606 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3608 uint64_t min
, uint64_t max
)
3610 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3613 EXPORT_SYMBOL(drm_property_create_range
);
3615 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3616 int flags
, const char *name
,
3617 int64_t min
, int64_t max
)
3619 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3620 name
, I642U64(min
), I642U64(max
));
3622 EXPORT_SYMBOL(drm_property_create_signed_range
);
3624 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3625 int flags
, const char *name
, uint32_t type
)
3627 struct drm_property
*property
;
3629 flags
|= DRM_MODE_PROP_OBJECT
;
3631 property
= drm_property_create(dev
, flags
, name
, 1);
3635 property
->values
[0] = type
;
3639 EXPORT_SYMBOL(drm_property_create_object
);
3642 * drm_property_add_enum - add a possible value to an enumeration property
3643 * @property: enumeration property to change
3644 * @index: index of the new enumeration
3645 * @value: value of the new enumeration
3646 * @name: symbolic name of the new enumeration
3648 * This functions adds enumerations to a property.
3650 * It's use is deprecated, drivers should use one of the more specific helpers
3651 * to directly create the property with all enumerations already attached.
3654 * Zero on success, error code on failure.
3656 int drm_property_add_enum(struct drm_property
*property
, int index
,
3657 uint64_t value
, const char *name
)
3659 struct drm_property_enum
*prop_enum
;
3661 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3662 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3666 * Bitmask enum properties have the additional constraint of values
3669 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3673 if (!list_empty(&property
->enum_blob_list
)) {
3674 list_for_each_entry(prop_enum
, &property
->enum_blob_list
, head
) {
3675 if (prop_enum
->value
== value
) {
3676 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3677 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3683 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3687 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3688 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3689 prop_enum
->value
= value
;
3691 property
->values
[index
] = value
;
3692 list_add_tail(&prop_enum
->head
, &property
->enum_blob_list
);
3695 EXPORT_SYMBOL(drm_property_add_enum
);
3698 * drm_property_destroy - destroy a drm property
3700 * @property: property to destry
3702 * This function frees a property including any attached resources like
3703 * enumeration values.
3705 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3707 struct drm_property_enum
*prop_enum
, *pt
;
3709 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_blob_list
, head
) {
3710 list_del(&prop_enum
->head
);
3714 if (property
->num_values
)
3715 kfree(property
->values
);
3716 drm_mode_object_put(dev
, &property
->base
);
3717 list_del(&property
->head
);
3720 EXPORT_SYMBOL(drm_property_destroy
);
3723 * drm_object_attach_property - attach a property to a modeset object
3724 * @obj: drm modeset object
3725 * @property: property to attach
3726 * @init_val: initial value of the property
3728 * This attaches the given property to the modeset object with the given initial
3729 * value. Currently this function cannot fail since the properties are stored in
3730 * a statically sized array.
3732 void drm_object_attach_property(struct drm_mode_object
*obj
,
3733 struct drm_property
*property
,
3736 int count
= obj
->properties
->count
;
3738 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3739 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3740 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3741 "you see this message on the same object type.\n",
3746 obj
->properties
->ids
[count
] = property
->base
.id
;
3747 obj
->properties
->values
[count
] = init_val
;
3748 obj
->properties
->count
++;
3750 EXPORT_SYMBOL(drm_object_attach_property
);
3753 * drm_object_property_set_value - set the value of a property
3754 * @obj: drm mode object to set property value for
3755 * @property: property to set
3756 * @val: value the property should be set to
3758 * This functions sets a given property on a given object. This function only
3759 * changes the software state of the property, it does not call into the
3760 * driver's ->set_property callback.
3763 * Zero on success, error code on failure.
3765 int drm_object_property_set_value(struct drm_mode_object
*obj
,
3766 struct drm_property
*property
, uint64_t val
)
3770 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3771 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3772 obj
->properties
->values
[i
] = val
;
3779 EXPORT_SYMBOL(drm_object_property_set_value
);
3782 * drm_object_property_get_value - retrieve the value of a property
3783 * @obj: drm mode object to get property value from
3784 * @property: property to retrieve
3785 * @val: storage for the property value
3787 * This function retrieves the softare state of the given property for the given
3788 * property. Since there is no driver callback to retrieve the current property
3789 * value this might be out of sync with the hardware, depending upon the driver
3793 * Zero on success, error code on failure.
3795 int drm_object_property_get_value(struct drm_mode_object
*obj
,
3796 struct drm_property
*property
, uint64_t *val
)
3800 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3801 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3802 *val
= obj
->properties
->values
[i
];
3809 EXPORT_SYMBOL(drm_object_property_get_value
);
3812 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3815 * @file_priv: DRM file info
3817 * This function retrieves the current value for an connectors's property.
3819 * Called by the user via ioctl.
3822 * Zero on success, errno on failure.
3824 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
3825 void *data
, struct drm_file
*file_priv
)
3827 struct drm_mode_get_property
*out_resp
= data
;
3828 struct drm_property
*property
;
3831 int value_count
= 0;
3834 struct drm_property_enum
*prop_enum
;
3835 struct drm_mode_property_enum __user
*enum_ptr
;
3836 struct drm_property_blob
*prop_blob
;
3837 uint32_t __user
*blob_id_ptr
;
3838 uint64_t __user
*values_ptr
;
3839 uint32_t __user
*blob_length_ptr
;
3841 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3844 drm_modeset_lock_all(dev
);
3845 property
= drm_property_find(dev
, out_resp
->prop_id
);
3851 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3852 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3853 list_for_each_entry(prop_enum
, &property
->enum_blob_list
, head
)
3855 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
3856 list_for_each_entry(prop_blob
, &property
->enum_blob_list
, head
)
3860 value_count
= property
->num_values
;
3862 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
3863 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
3864 out_resp
->flags
= property
->flags
;
3866 if ((out_resp
->count_values
>= value_count
) && value_count
) {
3867 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
3868 for (i
= 0; i
< value_count
; i
++) {
3869 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
3875 out_resp
->count_values
= value_count
;
3877 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3878 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3879 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
3881 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
3882 list_for_each_entry(prop_enum
, &property
->enum_blob_list
, head
) {
3884 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
3889 if (copy_to_user(&enum_ptr
[copied
].name
,
3890 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
3897 out_resp
->count_enum_blobs
= enum_count
;
3900 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
3901 if ((out_resp
->count_enum_blobs
>= blob_count
) && blob_count
) {
3903 blob_id_ptr
= (uint32_t __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
3904 blob_length_ptr
= (uint32_t __user
*)(unsigned long)out_resp
->values_ptr
;
3906 list_for_each_entry(prop_blob
, &property
->enum_blob_list
, head
) {
3907 if (put_user(prop_blob
->base
.id
, blob_id_ptr
+ copied
)) {
3912 if (put_user(prop_blob
->length
, blob_length_ptr
+ copied
)) {
3920 out_resp
->count_enum_blobs
= blob_count
;
3923 drm_modeset_unlock_all(dev
);
3927 static struct drm_property_blob
*drm_property_create_blob(struct drm_device
*dev
, int length
,
3930 struct drm_property_blob
*blob
;
3933 if (!length
|| !data
)
3936 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
3940 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
3946 blob
->length
= length
;
3948 memcpy(blob
->data
, data
, length
);
3950 list_add_tail(&blob
->head
, &dev
->mode_config
.property_blob_list
);
3954 static void drm_property_destroy_blob(struct drm_device
*dev
,
3955 struct drm_property_blob
*blob
)
3957 drm_mode_object_put(dev
, &blob
->base
);
3958 list_del(&blob
->head
);
3963 * drm_mode_getblob_ioctl - get the contents of a blob property value
3966 * @file_priv: DRM file info
3968 * This function retrieves the contents of a blob property. The value stored in
3969 * an object's blob property is just a normal modeset object id.
3971 * Called by the user via ioctl.
3974 * Zero on success, errno on failure.
3976 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
3977 void *data
, struct drm_file
*file_priv
)
3979 struct drm_mode_get_blob
*out_resp
= data
;
3980 struct drm_property_blob
*blob
;
3982 void __user
*blob_ptr
;
3984 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3987 drm_modeset_lock_all(dev
);
3988 blob
= drm_property_blob_find(dev
, out_resp
->blob_id
);
3994 if (out_resp
->length
== blob
->length
) {
3995 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
3996 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)){
4001 out_resp
->length
= blob
->length
;
4004 drm_modeset_unlock_all(dev
);
4009 * drm_mode_connector_set_path_property - set tile property on connector
4010 * @connector: connector to set property on.
4011 * @path: path to use for property.
4013 * This creates a property to expose to userspace to specify a
4014 * connector path. This is mainly used for DisplayPort MST where
4015 * connectors have a topology and we want to allow userspace to give
4016 * them more meaningful names.
4019 * Zero on success, errno on failure.
4021 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4024 struct drm_device
*dev
= connector
->dev
;
4026 size
= strlen(path
) + 1;
4028 connector
->path_blob_ptr
= drm_property_create_blob(connector
->dev
,
4030 if (!connector
->path_blob_ptr
)
4033 ret
= drm_object_property_set_value(&connector
->base
,
4034 dev
->mode_config
.path_property
,
4035 connector
->path_blob_ptr
->base
.id
);
4038 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4041 * drm_mode_connector_update_edid_property - update the edid property of a connector
4042 * @connector: drm connector
4043 * @edid: new value of the edid property
4045 * This function creates a new blob modeset object and assigns its id to the
4046 * connector's edid property.
4049 * Zero on success, errno on failure.
4051 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4054 struct drm_device
*dev
= connector
->dev
;
4057 /* ignore requests to set edid when overridden */
4058 if (connector
->override_edid
)
4061 if (connector
->edid_blob_ptr
)
4062 drm_property_destroy_blob(dev
, connector
->edid_blob_ptr
);
4064 /* Delete edid, when there is none. */
4066 connector
->edid_blob_ptr
= NULL
;
4067 ret
= drm_object_property_set_value(&connector
->base
, dev
->mode_config
.edid_property
, 0);
4071 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4072 connector
->edid_blob_ptr
= drm_property_create_blob(connector
->dev
,
4074 if (!connector
->edid_blob_ptr
)
4077 ret
= drm_object_property_set_value(&connector
->base
,
4078 dev
->mode_config
.edid_property
,
4079 connector
->edid_blob_ptr
->base
.id
);
4083 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4085 static bool drm_property_change_is_valid(struct drm_property
*property
,
4088 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4091 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4092 if (value
< property
->values
[0] || value
> property
->values
[1])
4095 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4096 int64_t svalue
= U642I64(value
);
4097 if (svalue
< U642I64(property
->values
[0]) ||
4098 svalue
> U642I64(property
->values
[1]))
4101 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4103 uint64_t valid_mask
= 0;
4104 for (i
= 0; i
< property
->num_values
; i
++)
4105 valid_mask
|= (1ULL << property
->values
[i
]);
4106 return !(value
& ~valid_mask
);
4107 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4108 /* Only the driver knows */
4110 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4111 struct drm_mode_object
*obj
;
4112 /* a zero value for an object property translates to null: */
4116 * NOTE: use _object_find() directly to bypass restriction on
4117 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4118 * object this could race against object finalization, so it
4119 * simply tells us that the object *was* valid. Which is good
4122 obj
= _object_find(property
->dev
, value
, property
->values
[0]);
4126 for (i
= 0; i
< property
->num_values
; i
++)
4127 if (property
->values
[i
] == value
)
4134 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4137 * @file_priv: DRM file info
4139 * This function sets the current value for a connectors's property. It also
4140 * calls into a driver's ->set_property callback to update the hardware state
4142 * Called by the user via ioctl.
4145 * Zero on success, errno on failure.
4147 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4148 void *data
, struct drm_file
*file_priv
)
4150 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4151 struct drm_mode_obj_set_property obj_set_prop
= {
4152 .value
= conn_set_prop
->value
,
4153 .prop_id
= conn_set_prop
->prop_id
,
4154 .obj_id
= conn_set_prop
->connector_id
,
4155 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4158 /* It does all the locking and checking we need */
4159 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4162 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4163 struct drm_property
*property
,
4167 struct drm_connector
*connector
= obj_to_connector(obj
);
4169 /* Do DPMS ourselves */
4170 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4171 if (connector
->funcs
->dpms
)
4172 (*connector
->funcs
->dpms
)(connector
, (int)value
);
4174 } else if (connector
->funcs
->set_property
)
4175 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4177 /* store the property value if successful */
4179 drm_object_property_set_value(&connector
->base
, property
, value
);
4183 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4184 struct drm_property
*property
,
4188 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4190 if (crtc
->funcs
->set_property
)
4191 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4193 drm_object_property_set_value(obj
, property
, value
);
4199 * drm_mode_plane_set_obj_prop - set the value of a property
4200 * @plane: drm plane object to set property value for
4201 * @property: property to set
4202 * @value: value the property should be set to
4204 * This functions sets a given property on a given plane object. This function
4205 * calls the driver's ->set_property callback and changes the software state of
4206 * the property if the callback succeeds.
4209 * Zero on success, error code on failure.
4211 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4212 struct drm_property
*property
,
4216 struct drm_mode_object
*obj
= &plane
->base
;
4218 if (plane
->funcs
->set_property
)
4219 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4221 drm_object_property_set_value(obj
, property
, value
);
4225 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4228 * drm_mode_getproperty_ioctl - get the current value of a object's property
4231 * @file_priv: DRM file info
4233 * This function retrieves the current value for an object's property. Compared
4234 * to the connector specific ioctl this one is extended to also work on crtc and
4237 * Called by the user via ioctl.
4240 * Zero on success, errno on failure.
4242 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4243 struct drm_file
*file_priv
)
4245 struct drm_mode_obj_get_properties
*arg
= data
;
4246 struct drm_mode_object
*obj
;
4250 int props_count
= 0;
4251 uint32_t __user
*props_ptr
;
4252 uint64_t __user
*prop_values_ptr
;
4254 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4257 drm_modeset_lock_all(dev
);
4259 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4264 if (!obj
->properties
) {
4269 props_count
= obj
->properties
->count
;
4271 /* This ioctl is called twice, once to determine how much space is
4272 * needed, and the 2nd time to fill it. */
4273 if ((arg
->count_props
>= props_count
) && props_count
) {
4275 props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->props_ptr
);
4276 prop_values_ptr
= (uint64_t __user
*)(unsigned long)
4277 (arg
->prop_values_ptr
);
4278 for (i
= 0; i
< props_count
; i
++) {
4279 if (put_user(obj
->properties
->ids
[i
],
4280 props_ptr
+ copied
)) {
4284 if (put_user(obj
->properties
->values
[i
],
4285 prop_values_ptr
+ copied
)) {
4292 arg
->count_props
= props_count
;
4294 drm_modeset_unlock_all(dev
);
4299 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4302 * @file_priv: DRM file info
4304 * This function sets the current value for an object's property. It also calls
4305 * into a driver's ->set_property callback to update the hardware state.
4306 * Compared to the connector specific ioctl this one is extended to also work on
4307 * crtc and plane objects.
4309 * Called by the user via ioctl.
4312 * Zero on success, errno on failure.
4314 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4315 struct drm_file
*file_priv
)
4317 struct drm_mode_obj_set_property
*arg
= data
;
4318 struct drm_mode_object
*arg_obj
;
4319 struct drm_mode_object
*prop_obj
;
4320 struct drm_property
*property
;
4324 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4327 drm_modeset_lock_all(dev
);
4329 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4334 if (!arg_obj
->properties
)
4337 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4338 if (arg_obj
->properties
->ids
[i
] == arg
->prop_id
)
4341 if (i
== arg_obj
->properties
->count
)
4344 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
4345 DRM_MODE_OBJECT_PROPERTY
);
4350 property
= obj_to_property(prop_obj
);
4352 if (!drm_property_change_is_valid(property
, arg
->value
))
4355 switch (arg_obj
->type
) {
4356 case DRM_MODE_OBJECT_CONNECTOR
:
4357 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
4360 case DRM_MODE_OBJECT_CRTC
:
4361 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
4363 case DRM_MODE_OBJECT_PLANE
:
4364 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
4365 property
, arg
->value
);
4370 drm_modeset_unlock_all(dev
);
4375 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4376 * @connector: connector to attach
4377 * @encoder: encoder to attach @connector to
4379 * This function links up a connector to an encoder. Note that the routing
4380 * restrictions between encoders and crtcs are exposed to userspace through the
4381 * possible_clones and possible_crtcs bitmasks.
4384 * Zero on success, errno on failure.
4386 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
4387 struct drm_encoder
*encoder
)
4391 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
4392 if (connector
->encoder_ids
[i
] == 0) {
4393 connector
->encoder_ids
[i
] = encoder
->base
.id
;
4399 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
4402 * drm_mode_crtc_set_gamma_size - set the gamma table size
4403 * @crtc: CRTC to set the gamma table size for
4404 * @gamma_size: size of the gamma table
4406 * Drivers which support gamma tables should set this to the supported gamma
4407 * table size when initializing the CRTC. Currently the drm core only supports a
4408 * fixed gamma table size.
4411 * Zero on success, errno on failure.
4413 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
4416 crtc
->gamma_size
= gamma_size
;
4418 crtc
->gamma_store
= kzalloc(gamma_size
* sizeof(uint16_t) * 3, GFP_KERNEL
);
4419 if (!crtc
->gamma_store
) {
4420 crtc
->gamma_size
= 0;
4426 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
4429 * drm_mode_gamma_set_ioctl - set the gamma table
4432 * @file_priv: DRM file info
4434 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4435 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4437 * Called by the user via ioctl.
4440 * Zero on success, errno on failure.
4442 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
4443 void *data
, struct drm_file
*file_priv
)
4445 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4446 struct drm_crtc
*crtc
;
4447 void *r_base
, *g_base
, *b_base
;
4451 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4454 drm_modeset_lock_all(dev
);
4455 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4461 if (crtc
->funcs
->gamma_set
== NULL
) {
4466 /* memcpy into gamma store */
4467 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4472 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4473 r_base
= crtc
->gamma_store
;
4474 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
4479 g_base
= r_base
+ size
;
4480 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
4485 b_base
= g_base
+ size
;
4486 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
4491 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
4494 drm_modeset_unlock_all(dev
);
4500 * drm_mode_gamma_get_ioctl - get the gamma table
4503 * @file_priv: DRM file info
4505 * Copy the current gamma table into the storage provided. This also provides
4506 * the gamma table size the driver expects, which can be used to size the
4507 * allocated storage.
4509 * Called by the user via ioctl.
4512 * Zero on success, errno on failure.
4514 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
4515 void *data
, struct drm_file
*file_priv
)
4517 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4518 struct drm_crtc
*crtc
;
4519 void *r_base
, *g_base
, *b_base
;
4523 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4526 drm_modeset_lock_all(dev
);
4527 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4533 /* memcpy into gamma store */
4534 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4539 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4540 r_base
= crtc
->gamma_store
;
4541 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
4546 g_base
= r_base
+ size
;
4547 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
4552 b_base
= g_base
+ size
;
4553 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
4558 drm_modeset_unlock_all(dev
);
4563 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4566 * @file_priv: DRM file info
4568 * This schedules an asynchronous update on a given CRTC, called page flip.
4569 * Optionally a drm event is generated to signal the completion of the event.
4570 * Generic drivers cannot assume that a pageflip with changed framebuffer
4571 * properties (including driver specific metadata like tiling layout) will work,
4572 * but some drivers support e.g. pixel format changes through the pageflip
4575 * Called by the user via ioctl.
4578 * Zero on success, errno on failure.
4580 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
4581 void *data
, struct drm_file
*file_priv
)
4583 struct drm_mode_crtc_page_flip
*page_flip
= data
;
4584 struct drm_crtc
*crtc
;
4585 struct drm_framebuffer
*fb
= NULL
;
4586 struct drm_pending_vblank_event
*e
= NULL
;
4587 unsigned long flags
;
4590 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
4591 page_flip
->reserved
!= 0)
4594 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
4597 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
4601 drm_modeset_lock_crtc(crtc
);
4602 if (crtc
->primary
->fb
== NULL
) {
4603 /* The framebuffer is currently unbound, presumably
4604 * due to a hotplug event, that userspace has not
4611 if (crtc
->funcs
->page_flip
== NULL
)
4614 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
4620 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
4624 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
4625 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4630 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4632 spin_lock_irqsave(&dev
->event_lock
, flags
);
4633 if (file_priv
->event_space
< sizeof e
->event
) {
4634 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4637 file_priv
->event_space
-= sizeof e
->event
;
4638 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4640 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
4642 spin_lock_irqsave(&dev
->event_lock
, flags
);
4643 file_priv
->event_space
+= sizeof e
->event
;
4644 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4648 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
4649 e
->event
.base
.length
= sizeof e
->event
;
4650 e
->event
.user_data
= page_flip
->user_data
;
4651 e
->base
.event
= &e
->event
.base
;
4652 e
->base
.file_priv
= file_priv
;
4654 (void (*) (struct drm_pending_event
*)) kfree
;
4657 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
4658 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
4660 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4661 spin_lock_irqsave(&dev
->event_lock
, flags
);
4662 file_priv
->event_space
+= sizeof e
->event
;
4663 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4666 /* Keep the old fb, don't unref it. */
4667 crtc
->primary
->old_fb
= NULL
;
4670 * Warn if the driver hasn't properly updated the crtc->fb
4671 * field to reflect that the new framebuffer is now used.
4672 * Failing to do so will screw with the reference counting
4675 WARN_ON(crtc
->primary
->fb
!= fb
);
4676 /* Unref only the old framebuffer. */
4682 drm_framebuffer_unreference(fb
);
4683 if (crtc
->primary
->old_fb
)
4684 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
4685 crtc
->primary
->old_fb
= NULL
;
4686 drm_modeset_unlock_crtc(crtc
);
4692 * drm_mode_config_reset - call ->reset callbacks
4695 * This functions calls all the crtc's, encoder's and connector's ->reset
4696 * callback. Drivers can use this in e.g. their driver load or resume code to
4697 * reset hardware and software state.
4699 void drm_mode_config_reset(struct drm_device
*dev
)
4701 struct drm_crtc
*crtc
;
4702 struct drm_plane
*plane
;
4703 struct drm_encoder
*encoder
;
4704 struct drm_connector
*connector
;
4706 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
)
4707 if (plane
->funcs
->reset
)
4708 plane
->funcs
->reset(plane
);
4710 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
4711 if (crtc
->funcs
->reset
)
4712 crtc
->funcs
->reset(crtc
);
4714 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
4715 if (encoder
->funcs
->reset
)
4716 encoder
->funcs
->reset(encoder
);
4718 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
4719 connector
->status
= connector_status_unknown
;
4721 if (connector
->funcs
->reset
)
4722 connector
->funcs
->reset(connector
);
4725 EXPORT_SYMBOL(drm_mode_config_reset
);
4728 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4731 * @file_priv: DRM file info
4733 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4734 * TTM or something else entirely) and returns the resulting buffer handle. This
4735 * handle can then be wrapped up into a framebuffer modeset object.
4737 * Note that userspace is not allowed to use such objects for render
4738 * acceleration - drivers must create their own private ioctls for such a use
4741 * Called by the user via ioctl.
4744 * Zero on success, errno on failure.
4746 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
4747 void *data
, struct drm_file
*file_priv
)
4749 struct drm_mode_create_dumb
*args
= data
;
4750 u32 cpp
, stride
, size
;
4752 if (!dev
->driver
->dumb_create
)
4754 if (!args
->width
|| !args
->height
|| !args
->bpp
)
4757 /* overflow checks for 32bit size calculations */
4758 /* NOTE: DIV_ROUND_UP() can overflow */
4759 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
4760 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
4762 stride
= cpp
* args
->width
;
4763 if (args
->height
> 0xffffffffU
/ stride
)
4766 /* test for wrap-around */
4767 size
= args
->height
* stride
;
4768 if (PAGE_ALIGN(size
) == 0)
4771 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
4775 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4778 * @file_priv: DRM file info
4780 * Allocate an offset in the drm device node's address space to be able to
4781 * memory map a dumb buffer.
4783 * Called by the user via ioctl.
4786 * Zero on success, errno on failure.
4788 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
4789 void *data
, struct drm_file
*file_priv
)
4791 struct drm_mode_map_dumb
*args
= data
;
4793 /* call driver ioctl to get mmap offset */
4794 if (!dev
->driver
->dumb_map_offset
)
4797 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
4801 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4804 * @file_priv: DRM file info
4806 * This destroys the userspace handle for the given dumb backing storage buffer.
4807 * Since buffer objects must be reference counted in the kernel a buffer object
4808 * won't be immediately freed if a framebuffer modeset object still uses it.
4810 * Called by the user via ioctl.
4813 * Zero on success, errno on failure.
4815 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
4816 void *data
, struct drm_file
*file_priv
)
4818 struct drm_mode_destroy_dumb
*args
= data
;
4820 if (!dev
->driver
->dumb_destroy
)
4823 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
4827 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4828 * @format: pixel format (DRM_FORMAT_*)
4829 * @depth: storage for the depth value
4830 * @bpp: storage for the bpp value
4832 * This only supports RGB formats here for compat with code that doesn't use
4833 * pixel formats directly yet.
4835 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
4840 case DRM_FORMAT_RGB332
:
4841 case DRM_FORMAT_BGR233
:
4845 case DRM_FORMAT_XRGB1555
:
4846 case DRM_FORMAT_XBGR1555
:
4847 case DRM_FORMAT_RGBX5551
:
4848 case DRM_FORMAT_BGRX5551
:
4849 case DRM_FORMAT_ARGB1555
:
4850 case DRM_FORMAT_ABGR1555
:
4851 case DRM_FORMAT_RGBA5551
:
4852 case DRM_FORMAT_BGRA5551
:
4856 case DRM_FORMAT_RGB565
:
4857 case DRM_FORMAT_BGR565
:
4861 case DRM_FORMAT_RGB888
:
4862 case DRM_FORMAT_BGR888
:
4866 case DRM_FORMAT_XRGB8888
:
4867 case DRM_FORMAT_XBGR8888
:
4868 case DRM_FORMAT_RGBX8888
:
4869 case DRM_FORMAT_BGRX8888
:
4873 case DRM_FORMAT_XRGB2101010
:
4874 case DRM_FORMAT_XBGR2101010
:
4875 case DRM_FORMAT_RGBX1010102
:
4876 case DRM_FORMAT_BGRX1010102
:
4877 case DRM_FORMAT_ARGB2101010
:
4878 case DRM_FORMAT_ABGR2101010
:
4879 case DRM_FORMAT_RGBA1010102
:
4880 case DRM_FORMAT_BGRA1010102
:
4884 case DRM_FORMAT_ARGB8888
:
4885 case DRM_FORMAT_ABGR8888
:
4886 case DRM_FORMAT_RGBA8888
:
4887 case DRM_FORMAT_BGRA8888
:
4892 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4893 drm_get_format_name(format
));
4899 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
4902 * drm_format_num_planes - get the number of planes for format
4903 * @format: pixel format (DRM_FORMAT_*)
4906 * The number of planes used by the specified pixel format.
4908 int drm_format_num_planes(uint32_t format
)
4911 case DRM_FORMAT_YUV410
:
4912 case DRM_FORMAT_YVU410
:
4913 case DRM_FORMAT_YUV411
:
4914 case DRM_FORMAT_YVU411
:
4915 case DRM_FORMAT_YUV420
:
4916 case DRM_FORMAT_YVU420
:
4917 case DRM_FORMAT_YUV422
:
4918 case DRM_FORMAT_YVU422
:
4919 case DRM_FORMAT_YUV444
:
4920 case DRM_FORMAT_YVU444
:
4922 case DRM_FORMAT_NV12
:
4923 case DRM_FORMAT_NV21
:
4924 case DRM_FORMAT_NV16
:
4925 case DRM_FORMAT_NV61
:
4926 case DRM_FORMAT_NV24
:
4927 case DRM_FORMAT_NV42
:
4933 EXPORT_SYMBOL(drm_format_num_planes
);
4936 * drm_format_plane_cpp - determine the bytes per pixel value
4937 * @format: pixel format (DRM_FORMAT_*)
4938 * @plane: plane index
4941 * The bytes per pixel value for the specified plane.
4943 int drm_format_plane_cpp(uint32_t format
, int plane
)
4948 if (plane
>= drm_format_num_planes(format
))
4952 case DRM_FORMAT_YUYV
:
4953 case DRM_FORMAT_YVYU
:
4954 case DRM_FORMAT_UYVY
:
4955 case DRM_FORMAT_VYUY
:
4957 case DRM_FORMAT_NV12
:
4958 case DRM_FORMAT_NV21
:
4959 case DRM_FORMAT_NV16
:
4960 case DRM_FORMAT_NV61
:
4961 case DRM_FORMAT_NV24
:
4962 case DRM_FORMAT_NV42
:
4963 return plane
? 2 : 1;
4964 case DRM_FORMAT_YUV410
:
4965 case DRM_FORMAT_YVU410
:
4966 case DRM_FORMAT_YUV411
:
4967 case DRM_FORMAT_YVU411
:
4968 case DRM_FORMAT_YUV420
:
4969 case DRM_FORMAT_YVU420
:
4970 case DRM_FORMAT_YUV422
:
4971 case DRM_FORMAT_YVU422
:
4972 case DRM_FORMAT_YUV444
:
4973 case DRM_FORMAT_YVU444
:
4976 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
4980 EXPORT_SYMBOL(drm_format_plane_cpp
);
4983 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4984 * @format: pixel format (DRM_FORMAT_*)
4987 * The horizontal chroma subsampling factor for the
4988 * specified pixel format.
4990 int drm_format_horz_chroma_subsampling(uint32_t format
)
4993 case DRM_FORMAT_YUV411
:
4994 case DRM_FORMAT_YVU411
:
4995 case DRM_FORMAT_YUV410
:
4996 case DRM_FORMAT_YVU410
:
4998 case DRM_FORMAT_YUYV
:
4999 case DRM_FORMAT_YVYU
:
5000 case DRM_FORMAT_UYVY
:
5001 case DRM_FORMAT_VYUY
:
5002 case DRM_FORMAT_NV12
:
5003 case DRM_FORMAT_NV21
:
5004 case DRM_FORMAT_NV16
:
5005 case DRM_FORMAT_NV61
:
5006 case DRM_FORMAT_YUV422
:
5007 case DRM_FORMAT_YVU422
:
5008 case DRM_FORMAT_YUV420
:
5009 case DRM_FORMAT_YVU420
:
5015 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5018 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5019 * @format: pixel format (DRM_FORMAT_*)
5022 * The vertical chroma subsampling factor for the
5023 * specified pixel format.
5025 int drm_format_vert_chroma_subsampling(uint32_t format
)
5028 case DRM_FORMAT_YUV410
:
5029 case DRM_FORMAT_YVU410
:
5031 case DRM_FORMAT_YUV420
:
5032 case DRM_FORMAT_YVU420
:
5033 case DRM_FORMAT_NV12
:
5034 case DRM_FORMAT_NV21
:
5040 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5043 * drm_rotation_simplify() - Try to simplify the rotation
5044 * @rotation: Rotation to be simplified
5045 * @supported_rotations: Supported rotations
5047 * Attempt to simplify the rotation to a form that is supported.
5048 * Eg. if the hardware supports everything except DRM_REFLECT_X
5049 * one could call this function like this:
5051 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5052 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5053 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5055 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5056 * transforms the hardware supports, this function may not
5057 * be able to produce a supported transform, so the caller should
5058 * check the result afterwards.
5060 unsigned int drm_rotation_simplify(unsigned int rotation
,
5061 unsigned int supported_rotations
)
5063 if (rotation
& ~supported_rotations
) {
5064 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5065 rotation
= (rotation
& ~0xf) | BIT((ffs(rotation
& 0xf) + 1) % 4);
5070 EXPORT_SYMBOL(drm_rotation_simplify
);
5073 * drm_mode_config_init - initialize DRM mode_configuration structure
5076 * Initialize @dev's mode_config structure, used for tracking the graphics
5077 * configuration of @dev.
5079 * Since this initializes the modeset locks, no locking is possible. Which is no
5080 * problem, since this should happen single threaded at init time. It is the
5081 * driver's problem to ensure this guarantee.
5084 void drm_mode_config_init(struct drm_device
*dev
)
5086 mutex_init(&dev
->mode_config
.mutex
);
5087 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5088 mutex_init(&dev
->mode_config
.idr_mutex
);
5089 mutex_init(&dev
->mode_config
.fb_lock
);
5090 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5091 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5092 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5093 INIT_LIST_HEAD(&dev
->mode_config
.bridge_list
);
5094 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5095 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5096 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5097 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5098 idr_init(&dev
->mode_config
.crtc_idr
);
5100 drm_modeset_lock_all(dev
);
5101 drm_mode_create_standard_connector_properties(dev
);
5102 drm_mode_create_standard_plane_properties(dev
);
5103 drm_modeset_unlock_all(dev
);
5105 /* Just to be sure */
5106 dev
->mode_config
.num_fb
= 0;
5107 dev
->mode_config
.num_connector
= 0;
5108 dev
->mode_config
.num_crtc
= 0;
5109 dev
->mode_config
.num_encoder
= 0;
5110 dev
->mode_config
.num_overlay_plane
= 0;
5111 dev
->mode_config
.num_total_plane
= 0;
5113 EXPORT_SYMBOL(drm_mode_config_init
);
5116 * drm_mode_config_cleanup - free up DRM mode_config info
5119 * Free up all the connectors and CRTCs associated with this DRM device, then
5120 * free up the framebuffers and associated buffer objects.
5122 * Note that since this /should/ happen single-threaded at driver/device
5123 * teardown time, no locking is required. It's the driver's job to ensure that
5124 * this guarantee actually holds true.
5126 * FIXME: cleanup any dangling user buffer objects too
5128 void drm_mode_config_cleanup(struct drm_device
*dev
)
5130 struct drm_connector
*connector
, *ot
;
5131 struct drm_crtc
*crtc
, *ct
;
5132 struct drm_encoder
*encoder
, *enct
;
5133 struct drm_bridge
*bridge
, *brt
;
5134 struct drm_framebuffer
*fb
, *fbt
;
5135 struct drm_property
*property
, *pt
;
5136 struct drm_property_blob
*blob
, *bt
;
5137 struct drm_plane
*plane
, *plt
;
5139 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5141 encoder
->funcs
->destroy(encoder
);
5144 list_for_each_entry_safe(bridge
, brt
,
5145 &dev
->mode_config
.bridge_list
, head
) {
5146 bridge
->funcs
->destroy(bridge
);
5149 list_for_each_entry_safe(connector
, ot
,
5150 &dev
->mode_config
.connector_list
, head
) {
5151 connector
->funcs
->destroy(connector
);
5154 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5156 drm_property_destroy(dev
, property
);
5159 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5161 drm_property_destroy_blob(dev
, blob
);
5165 * Single-threaded teardown context, so it's not required to grab the
5166 * fb_lock to protect against concurrent fb_list access. Contrary, it
5167 * would actually deadlock with the drm_framebuffer_cleanup function.
5169 * Also, if there are any framebuffers left, that's a driver leak now,
5170 * so politely WARN about this.
5172 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5173 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5174 drm_framebuffer_remove(fb
);
5177 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5179 plane
->funcs
->destroy(plane
);
5182 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5183 crtc
->funcs
->destroy(crtc
);
5186 idr_destroy(&dev
->mode_config
.crtc_idr
);
5187 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5189 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5191 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5192 unsigned int supported_rotations
)
5194 static const struct drm_prop_enum_list props
[] = {
5195 { DRM_ROTATE_0
, "rotate-0" },
5196 { DRM_ROTATE_90
, "rotate-90" },
5197 { DRM_ROTATE_180
, "rotate-180" },
5198 { DRM_ROTATE_270
, "rotate-270" },
5199 { DRM_REFLECT_X
, "reflect-x" },
5200 { DRM_REFLECT_Y
, "reflect-y" },
5203 return drm_property_create_bitmask(dev
, 0, "rotation",
5204 props
, ARRAY_SIZE(props
),
5205 supported_rotations
);
5207 EXPORT_SYMBOL(drm_mode_create_rotation_property
);