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>
41 #include "drm_crtc_internal.h"
44 * drm_modeset_lock_all - take all modeset locks
47 * This function takes all modeset locks, suitable where a more fine-grained
48 * scheme isn't (yet) implemented. Locks must be dropped with
49 * drm_modeset_unlock_all.
51 void drm_modeset_lock_all(struct drm_device
*dev
)
53 struct drm_crtc
*crtc
;
55 mutex_lock(&dev
->mode_config
.mutex
);
57 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
58 mutex_lock_nest_lock(&crtc
->mutex
, &dev
->mode_config
.mutex
);
60 EXPORT_SYMBOL(drm_modeset_lock_all
);
63 * drm_modeset_unlock_all - drop all modeset locks
66 * This function drop all modeset locks taken by drm_modeset_lock_all.
68 void drm_modeset_unlock_all(struct drm_device
*dev
)
70 struct drm_crtc
*crtc
;
72 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
73 mutex_unlock(&crtc
->mutex
);
75 mutex_unlock(&dev
->mode_config
.mutex
);
77 EXPORT_SYMBOL(drm_modeset_unlock_all
);
80 * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked
83 * Useful as a debug assert.
85 void drm_warn_on_modeset_not_all_locked(struct drm_device
*dev
)
87 struct drm_crtc
*crtc
;
89 /* Locking is currently fubar in the panic handler. */
93 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
94 WARN_ON(!mutex_is_locked(&crtc
->mutex
));
96 WARN_ON(!mutex_is_locked(&dev
->mode_config
.mutex
));
98 EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked
);
100 /* Avoid boilerplate. I'm tired of typing. */
101 #define DRM_ENUM_NAME_FN(fnname, list) \
102 const char *fnname(int val) \
105 for (i = 0; i < ARRAY_SIZE(list); i++) { \
106 if (list[i].type == val) \
107 return list[i].name; \
109 return "(unknown)"; \
115 static const struct drm_prop_enum_list drm_dpms_enum_list
[] =
116 { { DRM_MODE_DPMS_ON
, "On" },
117 { DRM_MODE_DPMS_STANDBY
, "Standby" },
118 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
119 { DRM_MODE_DPMS_OFF
, "Off" }
122 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
125 * Optional properties
127 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] =
129 { DRM_MODE_SCALE_NONE
, "None" },
130 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
131 { DRM_MODE_SCALE_CENTER
, "Center" },
132 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
136 * Non-global properties, but "required" for certain connectors.
138 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list
[] =
140 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
141 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
142 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
145 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
147 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] =
149 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
150 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
151 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
154 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
155 drm_dvi_i_subconnector_enum_list
)
157 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] =
159 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
160 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
161 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
162 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
163 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
166 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
168 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] =
170 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
171 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
172 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
173 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
174 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
177 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
178 drm_tv_subconnector_enum_list
)
180 static const struct drm_prop_enum_list drm_dirty_info_enum_list
[] = {
181 { DRM_MODE_DIRTY_OFF
, "Off" },
182 { DRM_MODE_DIRTY_ON
, "On" },
183 { DRM_MODE_DIRTY_ANNOTATE
, "Annotate" },
186 struct drm_conn_prop_enum_list
{
193 * Connector and encoder types.
195 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] =
196 { { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
197 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
198 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
199 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
200 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
201 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
202 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
203 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
204 { DRM_MODE_CONNECTOR_Component
, "Component" },
205 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
206 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
207 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
208 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
209 { DRM_MODE_CONNECTOR_TV
, "TV" },
210 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
211 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
212 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
215 static const struct drm_prop_enum_list drm_encoder_enum_list
[] =
216 { { DRM_MODE_ENCODER_NONE
, "None" },
217 { DRM_MODE_ENCODER_DAC
, "DAC" },
218 { DRM_MODE_ENCODER_TMDS
, "TMDS" },
219 { DRM_MODE_ENCODER_LVDS
, "LVDS" },
220 { DRM_MODE_ENCODER_TVDAC
, "TV" },
221 { DRM_MODE_ENCODER_VIRTUAL
, "Virtual" },
222 { DRM_MODE_ENCODER_DSI
, "DSI" },
225 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] =
227 { SubPixelUnknown
, "Unknown" },
228 { SubPixelHorizontalRGB
, "Horizontal RGB" },
229 { SubPixelHorizontalBGR
, "Horizontal BGR" },
230 { SubPixelVerticalRGB
, "Vertical RGB" },
231 { SubPixelVerticalBGR
, "Vertical BGR" },
232 { SubPixelNone
, "None" },
235 void drm_connector_ida_init(void)
239 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
240 ida_init(&drm_connector_enum_list
[i
].ida
);
243 void drm_connector_ida_destroy(void)
247 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
248 ida_destroy(&drm_connector_enum_list
[i
].ida
);
252 * drm_get_encoder_name - return a string for encoder
253 * @encoder: encoder to compute name of
255 * Note that the buffer used by this function is globally shared and owned by
256 * the function itself.
258 * FIXME: This isn't really multithreading safe.
260 const char *drm_get_encoder_name(const struct drm_encoder
*encoder
)
264 snprintf(buf
, 32, "%s-%d",
265 drm_encoder_enum_list
[encoder
->encoder_type
].name
,
269 EXPORT_SYMBOL(drm_get_encoder_name
);
272 * drm_get_connector_name - return a string for connector
273 * @connector: connector to compute name of
275 * Note that the buffer used by this function is globally shared and owned by
276 * the function itself.
278 * FIXME: This isn't really multithreading safe.
280 const char *drm_get_connector_name(const struct drm_connector
*connector
)
284 snprintf(buf
, 32, "%s-%d",
285 drm_connector_enum_list
[connector
->connector_type
].name
,
286 connector
->connector_type_id
);
289 EXPORT_SYMBOL(drm_get_connector_name
);
292 * drm_get_connector_status_name - return a string for connector status
293 * @status: connector status to compute name of
295 * In contrast to the other drm_get_*_name functions this one here returns a
296 * const pointer and hence is threadsafe.
298 const char *drm_get_connector_status_name(enum drm_connector_status status
)
300 if (status
== connector_status_connected
)
302 else if (status
== connector_status_disconnected
)
303 return "disconnected";
307 EXPORT_SYMBOL(drm_get_connector_status_name
);
310 * drm_get_subpixel_order_name - return a string for a given subpixel enum
311 * @order: enum of subpixel_order
313 * Note you could abuse this and return something out of bounds, but that
314 * would be a caller error. No unscrubbed user data should make it here.
316 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
318 return drm_subpixel_enum_list
[order
].name
;
320 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
322 static char printable_char(int c
)
324 return isascii(c
) && isprint(c
) ? c
: '?';
328 * drm_get_format_name - return a string for drm fourcc format
329 * @format: format to compute name of
331 * Note that the buffer used by this function is globally shared and owned by
332 * the function itself.
334 * FIXME: This isn't really multithreading safe.
336 const char *drm_get_format_name(uint32_t format
)
340 snprintf(buf
, sizeof(buf
),
341 "%c%c%c%c %s-endian (0x%08x)",
342 printable_char(format
& 0xff),
343 printable_char((format
>> 8) & 0xff),
344 printable_char((format
>> 16) & 0xff),
345 printable_char((format
>> 24) & 0x7f),
346 format
& DRM_FORMAT_BIG_ENDIAN
? "big" : "little",
351 EXPORT_SYMBOL(drm_get_format_name
);
354 * drm_mode_object_get - allocate a new modeset identifier
356 * @obj: object pointer, used to generate unique ID
357 * @obj_type: object type
359 * Create a unique identifier based on @ptr in @dev's identifier space. Used
360 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
361 * modeset identifiers are _not_ reference counted. Hence don't use this for
362 * reference counted modeset objects like framebuffers.
365 * New unique (relative to other objects in @dev) integer identifier for the
368 int drm_mode_object_get(struct drm_device
*dev
,
369 struct drm_mode_object
*obj
, uint32_t obj_type
)
373 mutex_lock(&dev
->mode_config
.idr_mutex
);
374 ret
= idr_alloc(&dev
->mode_config
.crtc_idr
, obj
, 1, 0, GFP_KERNEL
);
377 * Set up the object linking under the protection of the idr
378 * lock so that other users can't see inconsistent state.
381 obj
->type
= obj_type
;
383 mutex_unlock(&dev
->mode_config
.idr_mutex
);
385 return ret
< 0 ? ret
: 0;
389 * drm_mode_object_put - free a modeset identifer
391 * @object: object to free
393 * Free @id from @dev's unique identifier pool. Note that despite the _get
394 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
395 * for reference counted modeset objects like framebuffers.
397 void drm_mode_object_put(struct drm_device
*dev
,
398 struct drm_mode_object
*object
)
400 mutex_lock(&dev
->mode_config
.idr_mutex
);
401 idr_remove(&dev
->mode_config
.crtc_idr
, object
->id
);
402 mutex_unlock(&dev
->mode_config
.idr_mutex
);
406 * drm_mode_object_find - look up a drm object with static lifetime
408 * @id: id of the mode object
409 * @type: type of the mode object
411 * Note that framebuffers cannot be looked up with this functions - since those
412 * are reference counted, they need special treatment.
414 struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
415 uint32_t id
, uint32_t type
)
417 struct drm_mode_object
*obj
= NULL
;
419 /* Framebuffers are reference counted and need their own lookup
421 WARN_ON(type
== DRM_MODE_OBJECT_FB
);
423 mutex_lock(&dev
->mode_config
.idr_mutex
);
424 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
425 if (!obj
|| (obj
->type
!= type
) || (obj
->id
!= id
))
427 mutex_unlock(&dev
->mode_config
.idr_mutex
);
431 EXPORT_SYMBOL(drm_mode_object_find
);
434 * drm_framebuffer_init - initialize a framebuffer
436 * @fb: framebuffer to be initialized
437 * @funcs: ... with these functions
439 * Allocates an ID for the framebuffer's parent mode object, sets its mode
440 * functions & device file and adds it to the master fd list.
443 * This functions publishes the fb and makes it available for concurrent access
444 * by other users. Which means by this point the fb _must_ be fully set up -
445 * since all the fb attributes are invariant over its lifetime, no further
446 * locking but only correct reference counting is required.
449 * Zero on success, error code on failure.
451 int drm_framebuffer_init(struct drm_device
*dev
, struct drm_framebuffer
*fb
,
452 const struct drm_framebuffer_funcs
*funcs
)
456 mutex_lock(&dev
->mode_config
.fb_lock
);
457 kref_init(&fb
->refcount
);
458 INIT_LIST_HEAD(&fb
->filp_head
);
462 ret
= drm_mode_object_get(dev
, &fb
->base
, DRM_MODE_OBJECT_FB
);
466 /* Grab the idr reference. */
467 drm_framebuffer_reference(fb
);
469 dev
->mode_config
.num_fb
++;
470 list_add(&fb
->head
, &dev
->mode_config
.fb_list
);
472 mutex_unlock(&dev
->mode_config
.fb_lock
);
476 EXPORT_SYMBOL(drm_framebuffer_init
);
478 static void drm_framebuffer_free(struct kref
*kref
)
480 struct drm_framebuffer
*fb
=
481 container_of(kref
, struct drm_framebuffer
, refcount
);
482 fb
->funcs
->destroy(fb
);
485 static struct drm_framebuffer
*__drm_framebuffer_lookup(struct drm_device
*dev
,
488 struct drm_mode_object
*obj
= NULL
;
489 struct drm_framebuffer
*fb
;
491 mutex_lock(&dev
->mode_config
.idr_mutex
);
492 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
493 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_FB
) || (obj
->id
!= id
))
497 mutex_unlock(&dev
->mode_config
.idr_mutex
);
503 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
505 * @id: id of the fb object
507 * If successful, this grabs an additional reference to the framebuffer -
508 * callers need to make sure to eventually unreference the returned framebuffer
509 * again, using @drm_framebuffer_unreference.
511 struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
514 struct drm_framebuffer
*fb
;
516 mutex_lock(&dev
->mode_config
.fb_lock
);
517 fb
= __drm_framebuffer_lookup(dev
, id
);
519 drm_framebuffer_reference(fb
);
520 mutex_unlock(&dev
->mode_config
.fb_lock
);
524 EXPORT_SYMBOL(drm_framebuffer_lookup
);
527 * drm_framebuffer_unreference - unref a framebuffer
528 * @fb: framebuffer to unref
530 * This functions decrements the fb's refcount and frees it if it drops to zero.
532 void drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
534 DRM_DEBUG("FB ID: %d\n", fb
->base
.id
);
535 kref_put(&fb
->refcount
, drm_framebuffer_free
);
537 EXPORT_SYMBOL(drm_framebuffer_unreference
);
540 * drm_framebuffer_reference - incr the fb refcnt
543 * This functions increments the fb's refcount.
545 void drm_framebuffer_reference(struct drm_framebuffer
*fb
)
547 DRM_DEBUG("FB ID: %d\n", fb
->base
.id
);
548 kref_get(&fb
->refcount
);
550 EXPORT_SYMBOL(drm_framebuffer_reference
);
552 static void drm_framebuffer_free_bug(struct kref
*kref
)
557 static void __drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
559 DRM_DEBUG("FB ID: %d\n", fb
->base
.id
);
560 kref_put(&fb
->refcount
, drm_framebuffer_free_bug
);
563 /* dev->mode_config.fb_lock must be held! */
564 static void __drm_framebuffer_unregister(struct drm_device
*dev
,
565 struct drm_framebuffer
*fb
)
567 mutex_lock(&dev
->mode_config
.idr_mutex
);
568 idr_remove(&dev
->mode_config
.crtc_idr
, fb
->base
.id
);
569 mutex_unlock(&dev
->mode_config
.idr_mutex
);
573 __drm_framebuffer_unreference(fb
);
577 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
578 * @fb: fb to unregister
580 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
581 * those used for fbdev. Note that the caller must hold a reference of it's own,
582 * i.e. the object may not be destroyed through this call (since it'll lead to a
583 * locking inversion).
585 void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
)
587 struct drm_device
*dev
= fb
->dev
;
589 mutex_lock(&dev
->mode_config
.fb_lock
);
590 /* Mark fb as reaped and drop idr ref. */
591 __drm_framebuffer_unregister(dev
, fb
);
592 mutex_unlock(&dev
->mode_config
.fb_lock
);
594 EXPORT_SYMBOL(drm_framebuffer_unregister_private
);
597 * drm_framebuffer_cleanup - remove a framebuffer object
598 * @fb: framebuffer to remove
600 * Cleanup framebuffer. This function is intended to be used from the drivers
601 * ->destroy callback. It can also be used to clean up driver private
602 * framebuffers embedded into a larger structure.
604 * Note that this function does not remove the fb from active usuage - if it is
605 * still used anywhere, hilarity can ensue since userspace could call getfb on
606 * the id and get back -EINVAL. Obviously no concern at driver unload time.
608 * Also, the framebuffer will not be removed from the lookup idr - for
609 * user-created framebuffers this will happen in in the rmfb ioctl. For
610 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
611 * drm_framebuffer_unregister_private.
613 void drm_framebuffer_cleanup(struct drm_framebuffer
*fb
)
615 struct drm_device
*dev
= fb
->dev
;
617 mutex_lock(&dev
->mode_config
.fb_lock
);
619 dev
->mode_config
.num_fb
--;
620 mutex_unlock(&dev
->mode_config
.fb_lock
);
622 EXPORT_SYMBOL(drm_framebuffer_cleanup
);
625 * drm_framebuffer_remove - remove and unreference a framebuffer object
626 * @fb: framebuffer to remove
628 * Scans all the CRTCs and planes in @dev's mode_config. If they're
629 * using @fb, removes it, setting it to NULL. Then drops the reference to the
630 * passed-in framebuffer. Might take the modeset locks.
632 * Note that this function optimizes the cleanup away if the caller holds the
633 * last reference to the framebuffer. It is also guaranteed to not take the
634 * modeset locks in this case.
636 void drm_framebuffer_remove(struct drm_framebuffer
*fb
)
638 struct drm_device
*dev
= fb
->dev
;
639 struct drm_crtc
*crtc
;
640 struct drm_plane
*plane
;
641 struct drm_mode_set set
;
644 WARN_ON(!list_empty(&fb
->filp_head
));
647 * drm ABI mandates that we remove any deleted framebuffers from active
648 * useage. But since most sane clients only remove framebuffers they no
649 * longer need, try to optimize this away.
651 * Since we're holding a reference ourselves, observing a refcount of 1
652 * means that we're the last holder and can skip it. Also, the refcount
653 * can never increase from 1 again, so we don't need any barriers or
656 * Note that userspace could try to race with use and instate a new
657 * usage _after_ we've cleared all current ones. End result will be an
658 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
661 if (atomic_read(&fb
->refcount
.refcount
) > 1) {
662 drm_modeset_lock_all(dev
);
663 /* remove from any CRTC */
664 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
665 if (crtc
->fb
== fb
) {
666 /* should turn off the crtc */
667 memset(&set
, 0, sizeof(struct drm_mode_set
));
670 ret
= drm_mode_set_config_internal(&set
);
672 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc
);
676 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
) {
678 drm_plane_force_disable(plane
);
680 drm_modeset_unlock_all(dev
);
683 drm_framebuffer_unreference(fb
);
685 EXPORT_SYMBOL(drm_framebuffer_remove
);
688 * drm_crtc_init - Initialise a new CRTC object
690 * @crtc: CRTC object to init
691 * @funcs: callbacks for the new CRTC
693 * Inits a new object created as base part of a driver crtc object.
696 * Zero on success, error code on failure.
698 int drm_crtc_init(struct drm_device
*dev
, struct drm_crtc
*crtc
,
699 const struct drm_crtc_funcs
*funcs
)
705 crtc
->invert_dimensions
= false;
707 drm_modeset_lock_all(dev
);
708 mutex_init(&crtc
->mutex
);
709 mutex_lock_nest_lock(&crtc
->mutex
, &dev
->mode_config
.mutex
);
711 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
715 crtc
->base
.properties
= &crtc
->properties
;
717 list_add_tail(&crtc
->head
, &dev
->mode_config
.crtc_list
);
718 dev
->mode_config
.num_crtc
++;
721 drm_modeset_unlock_all(dev
);
725 EXPORT_SYMBOL(drm_crtc_init
);
728 * drm_crtc_cleanup - Clean up the core crtc usage
729 * @crtc: CRTC to cleanup
731 * This function cleans up @crtc and removes it from the DRM mode setting
732 * core. Note that the function does *not* free the crtc structure itself,
733 * this is the responsibility of the caller.
735 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
737 struct drm_device
*dev
= crtc
->dev
;
739 kfree(crtc
->gamma_store
);
740 crtc
->gamma_store
= NULL
;
742 drm_mode_object_put(dev
, &crtc
->base
);
743 list_del(&crtc
->head
);
744 dev
->mode_config
.num_crtc
--;
746 EXPORT_SYMBOL(drm_crtc_cleanup
);
749 * drm_crtc_index - find the index of a registered CRTC
750 * @crtc: CRTC to find index for
752 * Given a registered CRTC, return the index of that CRTC within a DRM
753 * device's list of CRTCs.
755 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
757 unsigned int index
= 0;
758 struct drm_crtc
*tmp
;
760 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
769 EXPORT_SYMBOL(drm_crtc_index
);
772 * drm_mode_remove - remove and free a mode
773 * @connector: connector list to modify
774 * @mode: mode to remove
776 * Remove @mode from @connector's mode list, then free it.
778 static void drm_mode_remove(struct drm_connector
*connector
,
779 struct drm_display_mode
*mode
)
781 list_del(&mode
->head
);
782 drm_mode_destroy(connector
->dev
, mode
);
786 * drm_connector_init - Init a preallocated connector
788 * @connector: the connector to init
789 * @funcs: callbacks for this connector
790 * @connector_type: user visible type of the connector
792 * Initialises a preallocated connector. Connectors should be
793 * subclassed as part of driver connector objects.
796 * Zero on success, error code on failure.
798 int drm_connector_init(struct drm_device
*dev
,
799 struct drm_connector
*connector
,
800 const struct drm_connector_funcs
*funcs
,
804 struct ida
*connector_ida
=
805 &drm_connector_enum_list
[connector_type
].ida
;
807 drm_modeset_lock_all(dev
);
809 ret
= drm_mode_object_get(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
);
813 connector
->base
.properties
= &connector
->properties
;
814 connector
->dev
= dev
;
815 connector
->funcs
= funcs
;
816 connector
->connector_type
= connector_type
;
817 connector
->connector_type_id
=
818 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
819 if (connector
->connector_type_id
< 0) {
820 ret
= connector
->connector_type_id
;
821 drm_mode_object_put(dev
, &connector
->base
);
824 INIT_LIST_HEAD(&connector
->probed_modes
);
825 INIT_LIST_HEAD(&connector
->modes
);
826 connector
->edid_blob_ptr
= NULL
;
827 connector
->status
= connector_status_unknown
;
829 list_add_tail(&connector
->head
, &dev
->mode_config
.connector_list
);
830 dev
->mode_config
.num_connector
++;
832 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
833 drm_object_attach_property(&connector
->base
,
834 dev
->mode_config
.edid_property
,
837 drm_object_attach_property(&connector
->base
,
838 dev
->mode_config
.dpms_property
, 0);
841 drm_modeset_unlock_all(dev
);
845 EXPORT_SYMBOL(drm_connector_init
);
848 * drm_connector_cleanup - cleans up an initialised connector
849 * @connector: connector to cleanup
851 * Cleans up the connector but doesn't free the object.
853 void drm_connector_cleanup(struct drm_connector
*connector
)
855 struct drm_device
*dev
= connector
->dev
;
856 struct drm_display_mode
*mode
, *t
;
858 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
859 drm_mode_remove(connector
, mode
);
861 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
862 drm_mode_remove(connector
, mode
);
864 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
865 connector
->connector_type_id
);
867 drm_mode_object_put(dev
, &connector
->base
);
868 list_del(&connector
->head
);
869 dev
->mode_config
.num_connector
--;
871 EXPORT_SYMBOL(drm_connector_cleanup
);
874 * drm_connector_unplug_all - unregister connector userspace interfaces
877 * This function unregisters all connector userspace interfaces in sysfs. Should
878 * be call when the device is disconnected, e.g. from an usb driver's
879 * ->disconnect callback.
881 void drm_connector_unplug_all(struct drm_device
*dev
)
883 struct drm_connector
*connector
;
885 /* taking the mode config mutex ends up in a clash with sysfs */
886 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
887 drm_sysfs_connector_remove(connector
);
890 EXPORT_SYMBOL(drm_connector_unplug_all
);
893 * drm_bridge_init - initialize a drm transcoder/bridge
895 * @bridge: transcoder/bridge to set up
896 * @funcs: bridge function table
898 * Initialises a preallocated bridge. Bridges should be
899 * subclassed as part of driver connector objects.
902 * Zero on success, error code on failure.
904 int drm_bridge_init(struct drm_device
*dev
, struct drm_bridge
*bridge
,
905 const struct drm_bridge_funcs
*funcs
)
909 drm_modeset_lock_all(dev
);
911 ret
= drm_mode_object_get(dev
, &bridge
->base
, DRM_MODE_OBJECT_BRIDGE
);
916 bridge
->funcs
= funcs
;
918 list_add_tail(&bridge
->head
, &dev
->mode_config
.bridge_list
);
919 dev
->mode_config
.num_bridge
++;
922 drm_modeset_unlock_all(dev
);
925 EXPORT_SYMBOL(drm_bridge_init
);
928 * drm_bridge_cleanup - cleans up an initialised bridge
929 * @bridge: bridge to cleanup
931 * Cleans up the bridge but doesn't free the object.
933 void drm_bridge_cleanup(struct drm_bridge
*bridge
)
935 struct drm_device
*dev
= bridge
->dev
;
937 drm_modeset_lock_all(dev
);
938 drm_mode_object_put(dev
, &bridge
->base
);
939 list_del(&bridge
->head
);
940 dev
->mode_config
.num_bridge
--;
941 drm_modeset_unlock_all(dev
);
943 EXPORT_SYMBOL(drm_bridge_cleanup
);
946 * drm_encoder_init - Init a preallocated encoder
948 * @encoder: the encoder to init
949 * @funcs: callbacks for this encoder
950 * @encoder_type: user visible type of the encoder
952 * Initialises a preallocated encoder. Encoder should be
953 * subclassed as part of driver encoder objects.
956 * Zero on success, error code on failure.
958 int drm_encoder_init(struct drm_device
*dev
,
959 struct drm_encoder
*encoder
,
960 const struct drm_encoder_funcs
*funcs
,
965 drm_modeset_lock_all(dev
);
967 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
972 encoder
->encoder_type
= encoder_type
;
973 encoder
->funcs
= funcs
;
975 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
976 dev
->mode_config
.num_encoder
++;
979 drm_modeset_unlock_all(dev
);
983 EXPORT_SYMBOL(drm_encoder_init
);
986 * drm_encoder_cleanup - cleans up an initialised encoder
987 * @encoder: encoder to cleanup
989 * Cleans up the encoder but doesn't free the object.
991 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
993 struct drm_device
*dev
= encoder
->dev
;
994 drm_modeset_lock_all(dev
);
995 drm_mode_object_put(dev
, &encoder
->base
);
996 list_del(&encoder
->head
);
997 dev
->mode_config
.num_encoder
--;
998 drm_modeset_unlock_all(dev
);
1000 EXPORT_SYMBOL(drm_encoder_cleanup
);
1003 * drm_plane_init - Initialise a new plane object
1005 * @plane: plane object to init
1006 * @possible_crtcs: bitmask of possible CRTCs
1007 * @funcs: callbacks for the new plane
1008 * @formats: array of supported formats (%DRM_FORMAT_*)
1009 * @format_count: number of elements in @formats
1010 * @priv: plane is private (hidden from userspace)?
1012 * Inits a preallocate plane object created as base part of a driver plane
1016 * Zero on success, error code on failure.
1018 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1019 unsigned long possible_crtcs
,
1020 const struct drm_plane_funcs
*funcs
,
1021 const uint32_t *formats
, uint32_t format_count
,
1026 drm_modeset_lock_all(dev
);
1028 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1032 plane
->base
.properties
= &plane
->properties
;
1034 plane
->funcs
= funcs
;
1035 plane
->format_types
= kmalloc(sizeof(uint32_t) * format_count
,
1037 if (!plane
->format_types
) {
1038 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1039 drm_mode_object_put(dev
, &plane
->base
);
1044 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1045 plane
->format_count
= format_count
;
1046 plane
->possible_crtcs
= possible_crtcs
;
1047 plane
->type
= DRM_PLANE_TYPE_OVERLAY
;
1049 /* private planes are not exposed to userspace, but depending on
1050 * display hardware, might be convenient to allow sharing programming
1051 * for the scanout engine with the crtc implementation.
1054 list_add_tail(&plane
->head
, &dev
->mode_config
.plane_list
);
1055 dev
->mode_config
.num_total_plane
++;
1056 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1057 dev
->mode_config
.num_overlay_plane
++;
1059 INIT_LIST_HEAD(&plane
->head
);
1063 drm_modeset_unlock_all(dev
);
1067 EXPORT_SYMBOL(drm_plane_init
);
1070 * drm_plane_cleanup - Clean up the core plane usage
1071 * @plane: plane to cleanup
1073 * This function cleans up @plane and removes it from the DRM mode setting
1074 * core. Note that the function does *not* free the plane structure itself,
1075 * this is the responsibility of the caller.
1077 void drm_plane_cleanup(struct drm_plane
*plane
)
1079 struct drm_device
*dev
= plane
->dev
;
1081 drm_modeset_lock_all(dev
);
1082 kfree(plane
->format_types
);
1083 drm_mode_object_put(dev
, &plane
->base
);
1084 /* if not added to a list, it must be a private plane */
1085 if (!list_empty(&plane
->head
)) {
1086 list_del(&plane
->head
);
1087 dev
->mode_config
.num_total_plane
--;
1088 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1089 dev
->mode_config
.num_overlay_plane
--;
1091 drm_modeset_unlock_all(dev
);
1093 EXPORT_SYMBOL(drm_plane_cleanup
);
1096 * drm_plane_force_disable - Forcibly disable a plane
1097 * @plane: plane to disable
1099 * Forces the plane to be disabled.
1101 * Used when the plane's current framebuffer is destroyed,
1102 * and when restoring fbdev mode.
1104 void drm_plane_force_disable(struct drm_plane
*plane
)
1111 ret
= plane
->funcs
->disable_plane(plane
);
1113 DRM_ERROR("failed to disable plane with busy fb\n");
1114 /* disconnect the plane from the fb and crtc: */
1115 __drm_framebuffer_unreference(plane
->fb
);
1119 EXPORT_SYMBOL(drm_plane_force_disable
);
1121 static int drm_mode_create_standard_connector_properties(struct drm_device
*dev
)
1123 struct drm_property
*edid
;
1124 struct drm_property
*dpms
;
1127 * Standard properties (apply to all connectors)
1129 edid
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1130 DRM_MODE_PROP_IMMUTABLE
,
1132 dev
->mode_config
.edid_property
= edid
;
1134 dpms
= drm_property_create_enum(dev
, 0,
1135 "DPMS", drm_dpms_enum_list
,
1136 ARRAY_SIZE(drm_dpms_enum_list
));
1137 dev
->mode_config
.dpms_property
= dpms
;
1143 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1146 * Called by a driver the first time a DVI-I connector is made.
1148 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1150 struct drm_property
*dvi_i_selector
;
1151 struct drm_property
*dvi_i_subconnector
;
1153 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1157 drm_property_create_enum(dev
, 0,
1158 "select subconnector",
1159 drm_dvi_i_select_enum_list
,
1160 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1161 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1163 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1165 drm_dvi_i_subconnector_enum_list
,
1166 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1167 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1171 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1174 * drm_create_tv_properties - create TV specific connector properties
1176 * @num_modes: number of different TV formats (modes) supported
1177 * @modes: array of pointers to strings containing name of each format
1179 * Called by a driver's TV initialization routine, this function creates
1180 * the TV specific connector properties for a given device. Caller is
1181 * responsible for allocating a list of format names and passing them to
1184 int drm_mode_create_tv_properties(struct drm_device
*dev
, int num_modes
,
1187 struct drm_property
*tv_selector
;
1188 struct drm_property
*tv_subconnector
;
1191 if (dev
->mode_config
.tv_select_subconnector_property
)
1195 * Basic connector properties
1197 tv_selector
= drm_property_create_enum(dev
, 0,
1198 "select subconnector",
1199 drm_tv_select_enum_list
,
1200 ARRAY_SIZE(drm_tv_select_enum_list
));
1201 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1204 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1206 drm_tv_subconnector_enum_list
,
1207 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1208 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1211 * Other, TV specific properties: margins & TV modes.
1213 dev
->mode_config
.tv_left_margin_property
=
1214 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1216 dev
->mode_config
.tv_right_margin_property
=
1217 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1219 dev
->mode_config
.tv_top_margin_property
=
1220 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1222 dev
->mode_config
.tv_bottom_margin_property
=
1223 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1225 dev
->mode_config
.tv_mode_property
=
1226 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1228 for (i
= 0; i
< num_modes
; i
++)
1229 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1232 dev
->mode_config
.tv_brightness_property
=
1233 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1235 dev
->mode_config
.tv_contrast_property
=
1236 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1238 dev
->mode_config
.tv_flicker_reduction_property
=
1239 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1241 dev
->mode_config
.tv_overscan_property
=
1242 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1244 dev
->mode_config
.tv_saturation_property
=
1245 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1247 dev
->mode_config
.tv_hue_property
=
1248 drm_property_create_range(dev
, 0, "hue", 0, 100);
1252 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1255 * drm_mode_create_scaling_mode_property - create scaling mode property
1258 * Called by a driver the first time it's needed, must be attached to desired
1261 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1263 struct drm_property
*scaling_mode
;
1265 if (dev
->mode_config
.scaling_mode_property
)
1269 drm_property_create_enum(dev
, 0, "scaling mode",
1270 drm_scaling_mode_enum_list
,
1271 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1273 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1277 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1280 * drm_mode_create_dirty_property - create dirty property
1283 * Called by a driver the first time it's needed, must be attached to desired
1286 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1288 struct drm_property
*dirty_info
;
1290 if (dev
->mode_config
.dirty_info_property
)
1294 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1296 drm_dirty_info_enum_list
,
1297 ARRAY_SIZE(drm_dirty_info_enum_list
));
1298 dev
->mode_config
.dirty_info_property
= dirty_info
;
1302 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1304 static int drm_mode_group_init(struct drm_device
*dev
, struct drm_mode_group
*group
)
1306 uint32_t total_objects
= 0;
1308 total_objects
+= dev
->mode_config
.num_crtc
;
1309 total_objects
+= dev
->mode_config
.num_connector
;
1310 total_objects
+= dev
->mode_config
.num_encoder
;
1311 total_objects
+= dev
->mode_config
.num_bridge
;
1313 group
->id_list
= kzalloc(total_objects
* sizeof(uint32_t), GFP_KERNEL
);
1314 if (!group
->id_list
)
1317 group
->num_crtcs
= 0;
1318 group
->num_connectors
= 0;
1319 group
->num_encoders
= 0;
1320 group
->num_bridges
= 0;
1325 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1326 * the drm core's responsibility to set up mode control groups.
1328 int drm_mode_group_init_legacy_group(struct drm_device
*dev
,
1329 struct drm_mode_group
*group
)
1331 struct drm_crtc
*crtc
;
1332 struct drm_encoder
*encoder
;
1333 struct drm_connector
*connector
;
1334 struct drm_bridge
*bridge
;
1337 if ((ret
= drm_mode_group_init(dev
, group
)))
1340 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
1341 group
->id_list
[group
->num_crtcs
++] = crtc
->base
.id
;
1343 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
1344 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
++] =
1347 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1348 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1349 group
->num_connectors
++] = connector
->base
.id
;
1351 list_for_each_entry(bridge
, &dev
->mode_config
.bridge_list
, head
)
1352 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1353 group
->num_connectors
+ group
->num_bridges
++] =
1358 EXPORT_SYMBOL(drm_mode_group_init_legacy_group
);
1361 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1362 * @out: drm_mode_modeinfo struct to return to the user
1363 * @in: drm_display_mode to use
1365 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1368 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo
*out
,
1369 const struct drm_display_mode
*in
)
1371 WARN(in
->hdisplay
> USHRT_MAX
|| in
->hsync_start
> USHRT_MAX
||
1372 in
->hsync_end
> USHRT_MAX
|| in
->htotal
> USHRT_MAX
||
1373 in
->hskew
> USHRT_MAX
|| in
->vdisplay
> USHRT_MAX
||
1374 in
->vsync_start
> USHRT_MAX
|| in
->vsync_end
> USHRT_MAX
||
1375 in
->vtotal
> USHRT_MAX
|| in
->vscan
> USHRT_MAX
,
1376 "timing values too large for mode info\n");
1378 out
->clock
= in
->clock
;
1379 out
->hdisplay
= in
->hdisplay
;
1380 out
->hsync_start
= in
->hsync_start
;
1381 out
->hsync_end
= in
->hsync_end
;
1382 out
->htotal
= in
->htotal
;
1383 out
->hskew
= in
->hskew
;
1384 out
->vdisplay
= in
->vdisplay
;
1385 out
->vsync_start
= in
->vsync_start
;
1386 out
->vsync_end
= in
->vsync_end
;
1387 out
->vtotal
= in
->vtotal
;
1388 out
->vscan
= in
->vscan
;
1389 out
->vrefresh
= in
->vrefresh
;
1390 out
->flags
= in
->flags
;
1391 out
->type
= in
->type
;
1392 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1393 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1397 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1398 * @out: drm_display_mode to return to the user
1399 * @in: drm_mode_modeinfo to use
1401 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1405 * Zero on success, errno on failure.
1407 static int drm_crtc_convert_umode(struct drm_display_mode
*out
,
1408 const struct drm_mode_modeinfo
*in
)
1410 if (in
->clock
> INT_MAX
|| in
->vrefresh
> INT_MAX
)
1413 if ((in
->flags
& DRM_MODE_FLAG_3D_MASK
) > DRM_MODE_FLAG_3D_MAX
)
1416 out
->clock
= in
->clock
;
1417 out
->hdisplay
= in
->hdisplay
;
1418 out
->hsync_start
= in
->hsync_start
;
1419 out
->hsync_end
= in
->hsync_end
;
1420 out
->htotal
= in
->htotal
;
1421 out
->hskew
= in
->hskew
;
1422 out
->vdisplay
= in
->vdisplay
;
1423 out
->vsync_start
= in
->vsync_start
;
1424 out
->vsync_end
= in
->vsync_end
;
1425 out
->vtotal
= in
->vtotal
;
1426 out
->vscan
= in
->vscan
;
1427 out
->vrefresh
= in
->vrefresh
;
1428 out
->flags
= in
->flags
;
1429 out
->type
= in
->type
;
1430 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1431 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1437 * drm_mode_getresources - get graphics configuration
1438 * @dev: drm device for the ioctl
1439 * @data: data pointer for the ioctl
1440 * @file_priv: drm file for the ioctl call
1442 * Construct a set of configuration description structures and return
1443 * them to the user, including CRTC, connector and framebuffer configuration.
1445 * Called by the user via ioctl.
1448 * Zero on success, errno on failure.
1450 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1451 struct drm_file
*file_priv
)
1453 struct drm_mode_card_res
*card_res
= data
;
1454 struct list_head
*lh
;
1455 struct drm_framebuffer
*fb
;
1456 struct drm_connector
*connector
;
1457 struct drm_crtc
*crtc
;
1458 struct drm_encoder
*encoder
;
1460 int connector_count
= 0;
1463 int encoder_count
= 0;
1465 uint32_t __user
*fb_id
;
1466 uint32_t __user
*crtc_id
;
1467 uint32_t __user
*connector_id
;
1468 uint32_t __user
*encoder_id
;
1469 struct drm_mode_group
*mode_group
;
1471 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1475 mutex_lock(&file_priv
->fbs_lock
);
1477 * For the non-control nodes we need to limit the list of resources
1478 * by IDs in the group list for this node
1480 list_for_each(lh
, &file_priv
->fbs
)
1483 /* handle this in 4 parts */
1485 if (card_res
->count_fbs
>= fb_count
) {
1487 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1488 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1489 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1490 mutex_unlock(&file_priv
->fbs_lock
);
1496 card_res
->count_fbs
= fb_count
;
1497 mutex_unlock(&file_priv
->fbs_lock
);
1499 drm_modeset_lock_all(dev
);
1500 if (!drm_is_primary_client(file_priv
)) {
1503 list_for_each(lh
, &dev
->mode_config
.crtc_list
)
1506 list_for_each(lh
, &dev
->mode_config
.connector_list
)
1509 list_for_each(lh
, &dev
->mode_config
.encoder_list
)
1513 mode_group
= &file_priv
->master
->minor
->mode_group
;
1514 crtc_count
= mode_group
->num_crtcs
;
1515 connector_count
= mode_group
->num_connectors
;
1516 encoder_count
= mode_group
->num_encoders
;
1519 card_res
->max_height
= dev
->mode_config
.max_height
;
1520 card_res
->min_height
= dev
->mode_config
.min_height
;
1521 card_res
->max_width
= dev
->mode_config
.max_width
;
1522 card_res
->min_width
= dev
->mode_config
.min_width
;
1525 if (card_res
->count_crtcs
>= crtc_count
) {
1527 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1529 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
,
1531 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1532 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1539 for (i
= 0; i
< mode_group
->num_crtcs
; i
++) {
1540 if (put_user(mode_group
->id_list
[i
],
1541 crtc_id
+ copied
)) {
1549 card_res
->count_crtcs
= crtc_count
;
1552 if (card_res
->count_encoders
>= encoder_count
) {
1554 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1556 list_for_each_entry(encoder
,
1557 &dev
->mode_config
.encoder_list
,
1559 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1560 drm_get_encoder_name(encoder
));
1561 if (put_user(encoder
->base
.id
, encoder_id
+
1569 for (i
= mode_group
->num_crtcs
; i
< mode_group
->num_crtcs
+ mode_group
->num_encoders
; i
++) {
1570 if (put_user(mode_group
->id_list
[i
],
1571 encoder_id
+ copied
)) {
1580 card_res
->count_encoders
= encoder_count
;
1583 if (card_res
->count_connectors
>= connector_count
) {
1585 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1587 list_for_each_entry(connector
,
1588 &dev
->mode_config
.connector_list
,
1590 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1592 drm_get_connector_name(connector
));
1593 if (put_user(connector
->base
.id
,
1594 connector_id
+ copied
)) {
1601 int start
= mode_group
->num_crtcs
+
1602 mode_group
->num_encoders
;
1603 for (i
= start
; i
< start
+ mode_group
->num_connectors
; i
++) {
1604 if (put_user(mode_group
->id_list
[i
],
1605 connector_id
+ copied
)) {
1613 card_res
->count_connectors
= connector_count
;
1615 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1616 card_res
->count_connectors
, card_res
->count_encoders
);
1619 drm_modeset_unlock_all(dev
);
1624 * drm_mode_getcrtc - get CRTC configuration
1625 * @dev: drm device for the ioctl
1626 * @data: data pointer for the ioctl
1627 * @file_priv: drm file for the ioctl call
1629 * Construct a CRTC configuration structure to return to the user.
1631 * Called by the user via ioctl.
1634 * Zero on success, errno on failure.
1636 int drm_mode_getcrtc(struct drm_device
*dev
,
1637 void *data
, struct drm_file
*file_priv
)
1639 struct drm_mode_crtc
*crtc_resp
= data
;
1640 struct drm_crtc
*crtc
;
1641 struct drm_mode_object
*obj
;
1644 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1647 drm_modeset_lock_all(dev
);
1649 obj
= drm_mode_object_find(dev
, crtc_resp
->crtc_id
,
1650 DRM_MODE_OBJECT_CRTC
);
1655 crtc
= obj_to_crtc(obj
);
1657 crtc_resp
->x
= crtc
->x
;
1658 crtc_resp
->y
= crtc
->y
;
1659 crtc_resp
->gamma_size
= crtc
->gamma_size
;
1661 crtc_resp
->fb_id
= crtc
->fb
->base
.id
;
1663 crtc_resp
->fb_id
= 0;
1665 if (crtc
->enabled
) {
1667 drm_crtc_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
1668 crtc_resp
->mode_valid
= 1;
1671 crtc_resp
->mode_valid
= 0;
1675 drm_modeset_unlock_all(dev
);
1679 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1680 const struct drm_file
*file_priv
)
1683 * If user-space hasn't configured the driver to expose the stereo 3D
1684 * modes, don't expose them.
1686 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
1693 * drm_mode_getconnector - get connector configuration
1694 * @dev: drm device for the ioctl
1695 * @data: data pointer for the ioctl
1696 * @file_priv: drm file for the ioctl call
1698 * Construct a connector configuration structure to return to the user.
1700 * Called by the user via ioctl.
1703 * Zero on success, errno on failure.
1705 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
1706 struct drm_file
*file_priv
)
1708 struct drm_mode_get_connector
*out_resp
= data
;
1709 struct drm_mode_object
*obj
;
1710 struct drm_connector
*connector
;
1711 struct drm_display_mode
*mode
;
1713 int props_count
= 0;
1714 int encoders_count
= 0;
1718 struct drm_mode_modeinfo u_mode
;
1719 struct drm_mode_modeinfo __user
*mode_ptr
;
1720 uint32_t __user
*prop_ptr
;
1721 uint64_t __user
*prop_values
;
1722 uint32_t __user
*encoder_ptr
;
1724 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1727 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
1729 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
1731 mutex_lock(&dev
->mode_config
.mutex
);
1733 obj
= drm_mode_object_find(dev
, out_resp
->connector_id
,
1734 DRM_MODE_OBJECT_CONNECTOR
);
1739 connector
= obj_to_connector(obj
);
1741 props_count
= connector
->properties
.count
;
1743 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
1744 if (connector
->encoder_ids
[i
] != 0) {
1749 if (out_resp
->count_modes
== 0) {
1750 connector
->funcs
->fill_modes(connector
,
1751 dev
->mode_config
.max_width
,
1752 dev
->mode_config
.max_height
);
1755 /* delayed so we get modes regardless of pre-fill_modes state */
1756 list_for_each_entry(mode
, &connector
->modes
, head
)
1757 if (drm_mode_expose_to_userspace(mode
, file_priv
))
1760 out_resp
->connector_id
= connector
->base
.id
;
1761 out_resp
->connector_type
= connector
->connector_type
;
1762 out_resp
->connector_type_id
= connector
->connector_type_id
;
1763 out_resp
->mm_width
= connector
->display_info
.width_mm
;
1764 out_resp
->mm_height
= connector
->display_info
.height_mm
;
1765 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
1766 out_resp
->connection
= connector
->status
;
1767 if (connector
->encoder
)
1768 out_resp
->encoder_id
= connector
->encoder
->base
.id
;
1770 out_resp
->encoder_id
= 0;
1773 * This ioctl is called twice, once to determine how much space is
1774 * needed, and the 2nd time to fill it.
1776 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
1778 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
1779 list_for_each_entry(mode
, &connector
->modes
, head
) {
1780 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
1783 drm_crtc_convert_to_umode(&u_mode
, mode
);
1784 if (copy_to_user(mode_ptr
+ copied
,
1785 &u_mode
, sizeof(u_mode
))) {
1792 out_resp
->count_modes
= mode_count
;
1794 if ((out_resp
->count_props
>= props_count
) && props_count
) {
1796 prop_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
);
1797 prop_values
= (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
);
1798 for (i
= 0; i
< connector
->properties
.count
; i
++) {
1799 if (put_user(connector
->properties
.ids
[i
],
1800 prop_ptr
+ copied
)) {
1805 if (put_user(connector
->properties
.values
[i
],
1806 prop_values
+ copied
)) {
1813 out_resp
->count_props
= props_count
;
1815 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
1817 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
1818 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
1819 if (connector
->encoder_ids
[i
] != 0) {
1820 if (put_user(connector
->encoder_ids
[i
],
1821 encoder_ptr
+ copied
)) {
1829 out_resp
->count_encoders
= encoders_count
;
1832 mutex_unlock(&dev
->mode_config
.mutex
);
1838 * drm_mode_getencoder - get encoder configuration
1839 * @dev: drm device for the ioctl
1840 * @data: data pointer for the ioctl
1841 * @file_priv: drm file for the ioctl call
1843 * Construct a encoder configuration structure to return to the user.
1845 * Called by the user via ioctl.
1848 * Zero on success, errno on failure.
1850 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
1851 struct drm_file
*file_priv
)
1853 struct drm_mode_get_encoder
*enc_resp
= data
;
1854 struct drm_mode_object
*obj
;
1855 struct drm_encoder
*encoder
;
1858 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1861 drm_modeset_lock_all(dev
);
1862 obj
= drm_mode_object_find(dev
, enc_resp
->encoder_id
,
1863 DRM_MODE_OBJECT_ENCODER
);
1868 encoder
= obj_to_encoder(obj
);
1871 enc_resp
->crtc_id
= encoder
->crtc
->base
.id
;
1873 enc_resp
->crtc_id
= 0;
1874 enc_resp
->encoder_type
= encoder
->encoder_type
;
1875 enc_resp
->encoder_id
= encoder
->base
.id
;
1876 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
1877 enc_resp
->possible_clones
= encoder
->possible_clones
;
1880 drm_modeset_unlock_all(dev
);
1885 * drm_mode_getplane_res - enumerate all plane resources
1888 * @file_priv: DRM file info
1890 * Construct a list of plane ids to return to the user.
1892 * Called by the user via ioctl.
1895 * Zero on success, errno on failure.
1897 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
1898 struct drm_file
*file_priv
)
1900 struct drm_mode_get_plane_res
*plane_resp
= data
;
1901 struct drm_mode_config
*config
;
1902 struct drm_plane
*plane
;
1903 uint32_t __user
*plane_ptr
;
1904 int copied
= 0, ret
= 0;
1906 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1909 drm_modeset_lock_all(dev
);
1910 config
= &dev
->mode_config
;
1913 * This ioctl is called twice, once to determine how much space is
1914 * needed, and the 2nd time to fill it.
1916 if (config
->num_overlay_plane
&&
1917 (plane_resp
->count_planes
>= config
->num_overlay_plane
)) {
1918 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
1920 list_for_each_entry(plane
, &config
->plane_list
, head
) {
1921 /* Only advertise overlays to userspace for now. */
1922 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
)
1925 if (put_user(plane
->base
.id
, plane_ptr
+ copied
)) {
1932 plane_resp
->count_planes
= config
->num_overlay_plane
;
1935 drm_modeset_unlock_all(dev
);
1940 * drm_mode_getplane - get plane configuration
1943 * @file_priv: DRM file info
1945 * Construct a plane configuration structure to return to the user.
1947 * Called by the user via ioctl.
1950 * Zero on success, errno on failure.
1952 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
1953 struct drm_file
*file_priv
)
1955 struct drm_mode_get_plane
*plane_resp
= data
;
1956 struct drm_mode_object
*obj
;
1957 struct drm_plane
*plane
;
1958 uint32_t __user
*format_ptr
;
1961 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1964 drm_modeset_lock_all(dev
);
1965 obj
= drm_mode_object_find(dev
, plane_resp
->plane_id
,
1966 DRM_MODE_OBJECT_PLANE
);
1971 plane
= obj_to_plane(obj
);
1974 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
1976 plane_resp
->crtc_id
= 0;
1979 plane_resp
->fb_id
= plane
->fb
->base
.id
;
1981 plane_resp
->fb_id
= 0;
1983 plane_resp
->plane_id
= plane
->base
.id
;
1984 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
1985 plane_resp
->gamma_size
= 0;
1988 * This ioctl is called twice, once to determine how much space is
1989 * needed, and the 2nd time to fill it.
1991 if (plane
->format_count
&&
1992 (plane_resp
->count_format_types
>= plane
->format_count
)) {
1993 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
1994 if (copy_to_user(format_ptr
,
1995 plane
->format_types
,
1996 sizeof(uint32_t) * plane
->format_count
)) {
2001 plane_resp
->count_format_types
= plane
->format_count
;
2004 drm_modeset_unlock_all(dev
);
2009 * drm_mode_setplane - configure a plane's configuration
2011 * @data: ioctl data*
2012 * @file_priv: DRM file info
2014 * Set plane configuration, including placement, fb, scaling, and other factors.
2015 * Or pass a NULL fb to disable.
2018 * Zero on success, errno on failure.
2020 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2021 struct drm_file
*file_priv
)
2023 struct drm_mode_set_plane
*plane_req
= data
;
2024 struct drm_mode_object
*obj
;
2025 struct drm_plane
*plane
;
2026 struct drm_crtc
*crtc
;
2027 struct drm_framebuffer
*fb
= NULL
, *old_fb
= NULL
;
2029 unsigned int fb_width
, fb_height
;
2032 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2036 * First, find the plane, crtc, and fb objects. If not available,
2037 * we don't bother to call the driver.
2039 obj
= drm_mode_object_find(dev
, plane_req
->plane_id
,
2040 DRM_MODE_OBJECT_PLANE
);
2042 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2043 plane_req
->plane_id
);
2046 plane
= obj_to_plane(obj
);
2048 /* No fb means shut it down */
2049 if (!plane_req
->fb_id
) {
2050 drm_modeset_lock_all(dev
);
2052 plane
->funcs
->disable_plane(plane
);
2055 drm_modeset_unlock_all(dev
);
2059 obj
= drm_mode_object_find(dev
, plane_req
->crtc_id
,
2060 DRM_MODE_OBJECT_CRTC
);
2062 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2063 plane_req
->crtc_id
);
2067 crtc
= obj_to_crtc(obj
);
2069 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2071 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2077 /* Check whether this plane supports the fb pixel format. */
2078 for (i
= 0; i
< plane
->format_count
; i
++)
2079 if (fb
->pixel_format
== plane
->format_types
[i
])
2081 if (i
== plane
->format_count
) {
2082 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2083 drm_get_format_name(fb
->pixel_format
));
2088 fb_width
= fb
->width
<< 16;
2089 fb_height
= fb
->height
<< 16;
2091 /* Make sure source coordinates are inside the fb. */
2092 if (plane_req
->src_w
> fb_width
||
2093 plane_req
->src_x
> fb_width
- plane_req
->src_w
||
2094 plane_req
->src_h
> fb_height
||
2095 plane_req
->src_y
> fb_height
- plane_req
->src_h
) {
2096 DRM_DEBUG_KMS("Invalid source coordinates "
2097 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2098 plane_req
->src_w
>> 16,
2099 ((plane_req
->src_w
& 0xffff) * 15625) >> 10,
2100 plane_req
->src_h
>> 16,
2101 ((plane_req
->src_h
& 0xffff) * 15625) >> 10,
2102 plane_req
->src_x
>> 16,
2103 ((plane_req
->src_x
& 0xffff) * 15625) >> 10,
2104 plane_req
->src_y
>> 16,
2105 ((plane_req
->src_y
& 0xffff) * 15625) >> 10);
2110 /* Give drivers some help against integer overflows */
2111 if (plane_req
->crtc_w
> INT_MAX
||
2112 plane_req
->crtc_x
> INT_MAX
- (int32_t) plane_req
->crtc_w
||
2113 plane_req
->crtc_h
> INT_MAX
||
2114 plane_req
->crtc_y
> INT_MAX
- (int32_t) plane_req
->crtc_h
) {
2115 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2116 plane_req
->crtc_w
, plane_req
->crtc_h
,
2117 plane_req
->crtc_x
, plane_req
->crtc_y
);
2122 drm_modeset_lock_all(dev
);
2123 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2124 plane_req
->crtc_x
, plane_req
->crtc_y
,
2125 plane_req
->crtc_w
, plane_req
->crtc_h
,
2126 plane_req
->src_x
, plane_req
->src_y
,
2127 plane_req
->src_w
, plane_req
->src_h
);
2134 drm_modeset_unlock_all(dev
);
2138 drm_framebuffer_unreference(fb
);
2140 drm_framebuffer_unreference(old_fb
);
2146 * drm_mode_set_config_internal - helper to call ->set_config
2147 * @set: modeset config to set
2149 * This is a little helper to wrap internal calls to the ->set_config driver
2150 * interface. The only thing it adds is correct refcounting dance.
2153 * Zero on success, errno on failure.
2155 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2157 struct drm_crtc
*crtc
= set
->crtc
;
2158 struct drm_framebuffer
*fb
;
2159 struct drm_crtc
*tmp
;
2163 * NOTE: ->set_config can also disable other crtcs (if we steal all
2164 * connectors from it), hence we need to refcount the fbs across all
2165 * crtcs. Atomic modeset will have saner semantics ...
2167 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
)
2168 tmp
->old_fb
= tmp
->fb
;
2172 ret
= crtc
->funcs
->set_config(set
);
2174 /* crtc->fb must be updated by ->set_config, enforces this. */
2175 WARN_ON(fb
!= crtc
->fb
);
2178 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
2180 drm_framebuffer_reference(tmp
->fb
);
2182 drm_framebuffer_unreference(tmp
->old_fb
);
2187 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2190 * Checks that the framebuffer is big enough for the CRTC viewport
2191 * (x, y, hdisplay, vdisplay)
2193 static int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2195 const struct drm_display_mode
*mode
,
2196 const struct drm_framebuffer
*fb
)
2199 int hdisplay
, vdisplay
;
2201 hdisplay
= mode
->hdisplay
;
2202 vdisplay
= mode
->vdisplay
;
2204 if (drm_mode_is_stereo(mode
)) {
2205 struct drm_display_mode adjusted
= *mode
;
2207 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE
);
2208 hdisplay
= adjusted
.crtc_hdisplay
;
2209 vdisplay
= adjusted
.crtc_vdisplay
;
2212 if (crtc
->invert_dimensions
)
2213 swap(hdisplay
, vdisplay
);
2215 if (hdisplay
> fb
->width
||
2216 vdisplay
> fb
->height
||
2217 x
> fb
->width
- hdisplay
||
2218 y
> fb
->height
- vdisplay
) {
2219 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2220 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2221 crtc
->invert_dimensions
? " (inverted)" : "");
2229 * drm_mode_setcrtc - set CRTC configuration
2230 * @dev: drm device for the ioctl
2231 * @data: data pointer for the ioctl
2232 * @file_priv: drm file for the ioctl call
2234 * Build a new CRTC configuration based on user request.
2236 * Called by the user via ioctl.
2239 * Zero on success, errno on failure.
2241 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2242 struct drm_file
*file_priv
)
2244 struct drm_mode_config
*config
= &dev
->mode_config
;
2245 struct drm_mode_crtc
*crtc_req
= data
;
2246 struct drm_mode_object
*obj
;
2247 struct drm_crtc
*crtc
;
2248 struct drm_connector
**connector_set
= NULL
, *connector
;
2249 struct drm_framebuffer
*fb
= NULL
;
2250 struct drm_display_mode
*mode
= NULL
;
2251 struct drm_mode_set set
;
2252 uint32_t __user
*set_connectors_ptr
;
2256 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2259 /* For some reason crtc x/y offsets are signed internally. */
2260 if (crtc_req
->x
> INT_MAX
|| crtc_req
->y
> INT_MAX
)
2263 drm_modeset_lock_all(dev
);
2264 obj
= drm_mode_object_find(dev
, crtc_req
->crtc_id
,
2265 DRM_MODE_OBJECT_CRTC
);
2267 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2271 crtc
= obj_to_crtc(obj
);
2272 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2274 if (crtc_req
->mode_valid
) {
2275 /* If we have a mode we need a framebuffer. */
2276 /* If we pass -1, set the mode with the currently bound fb */
2277 if (crtc_req
->fb_id
== -1) {
2279 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2284 /* Make refcounting symmetric with the lookup path. */
2285 drm_framebuffer_reference(fb
);
2287 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2289 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2296 mode
= drm_mode_create(dev
);
2302 ret
= drm_crtc_convert_umode(mode
, &crtc_req
->mode
);
2304 DRM_DEBUG_KMS("Invalid mode\n");
2308 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2310 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2317 if (crtc_req
->count_connectors
== 0 && mode
) {
2318 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2323 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2324 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2325 crtc_req
->count_connectors
);
2330 if (crtc_req
->count_connectors
> 0) {
2333 /* Avoid unbounded kernel memory allocation */
2334 if (crtc_req
->count_connectors
> config
->num_connector
) {
2339 connector_set
= kmalloc(crtc_req
->count_connectors
*
2340 sizeof(struct drm_connector
*),
2342 if (!connector_set
) {
2347 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2348 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2349 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2354 obj
= drm_mode_object_find(dev
, out_id
,
2355 DRM_MODE_OBJECT_CONNECTOR
);
2357 DRM_DEBUG_KMS("Connector id %d unknown\n",
2362 connector
= obj_to_connector(obj
);
2363 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2365 drm_get_connector_name(connector
));
2367 connector_set
[i
] = connector
;
2372 set
.x
= crtc_req
->x
;
2373 set
.y
= crtc_req
->y
;
2375 set
.connectors
= connector_set
;
2376 set
.num_connectors
= crtc_req
->count_connectors
;
2378 ret
= drm_mode_set_config_internal(&set
);
2382 drm_framebuffer_unreference(fb
);
2384 kfree(connector_set
);
2385 drm_mode_destroy(dev
, mode
);
2386 drm_modeset_unlock_all(dev
);
2390 static int drm_mode_cursor_common(struct drm_device
*dev
,
2391 struct drm_mode_cursor2
*req
,
2392 struct drm_file
*file_priv
)
2394 struct drm_mode_object
*obj
;
2395 struct drm_crtc
*crtc
;
2398 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2401 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2404 obj
= drm_mode_object_find(dev
, req
->crtc_id
, DRM_MODE_OBJECT_CRTC
);
2406 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2409 crtc
= obj_to_crtc(obj
);
2411 mutex_lock(&crtc
->mutex
);
2412 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2413 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2417 /* Turns off the cursor if handle is 0 */
2418 if (crtc
->funcs
->cursor_set2
)
2419 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2420 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2422 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2423 req
->width
, req
->height
);
2426 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2427 if (crtc
->funcs
->cursor_move
) {
2428 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
2435 mutex_unlock(&crtc
->mutex
);
2443 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2444 * @dev: drm device for the ioctl
2445 * @data: data pointer for the ioctl
2446 * @file_priv: drm file for the ioctl call
2448 * Set the cursor configuration based on user request.
2450 * Called by the user via ioctl.
2453 * Zero on success, errno on failure.
2455 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
2456 void *data
, struct drm_file
*file_priv
)
2458 struct drm_mode_cursor
*req
= data
;
2459 struct drm_mode_cursor2 new_req
;
2461 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
2462 new_req
.hot_x
= new_req
.hot_y
= 0;
2464 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
2468 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2469 * @dev: drm device for the ioctl
2470 * @data: data pointer for the ioctl
2471 * @file_priv: drm file for the ioctl call
2473 * Set the cursor configuration based on user request. This implements the 2nd
2474 * version of the cursor ioctl, which allows userspace to additionally specify
2475 * the hotspot of the pointer.
2477 * Called by the user via ioctl.
2480 * Zero on success, errno on failure.
2482 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
2483 void *data
, struct drm_file
*file_priv
)
2485 struct drm_mode_cursor2
*req
= data
;
2486 return drm_mode_cursor_common(dev
, req
, file_priv
);
2490 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2491 * @bpp: bits per pixels
2492 * @depth: bit depth per pixel
2494 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2495 * Useful in fbdev emulation code, since that deals in those values.
2497 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
2503 fmt
= DRM_FORMAT_C8
;
2507 fmt
= DRM_FORMAT_XRGB1555
;
2509 fmt
= DRM_FORMAT_RGB565
;
2512 fmt
= DRM_FORMAT_RGB888
;
2516 fmt
= DRM_FORMAT_XRGB8888
;
2517 else if (depth
== 30)
2518 fmt
= DRM_FORMAT_XRGB2101010
;
2520 fmt
= DRM_FORMAT_ARGB8888
;
2523 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2524 fmt
= DRM_FORMAT_XRGB8888
;
2530 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
2533 * drm_mode_addfb - add an FB to the graphics configuration
2534 * @dev: drm device for the ioctl
2535 * @data: data pointer for the ioctl
2536 * @file_priv: drm file for the ioctl call
2538 * Add a new FB to the specified CRTC, given a user request. This is the
2539 * original addfb ioclt which only supported RGB formats.
2541 * Called by the user via ioctl.
2544 * Zero on success, errno on failure.
2546 int drm_mode_addfb(struct drm_device
*dev
,
2547 void *data
, struct drm_file
*file_priv
)
2549 struct drm_mode_fb_cmd
*or = data
;
2550 struct drm_mode_fb_cmd2 r
= {};
2551 struct drm_mode_config
*config
= &dev
->mode_config
;
2552 struct drm_framebuffer
*fb
;
2555 /* Use new struct with format internally */
2556 r
.fb_id
= or->fb_id
;
2557 r
.width
= or->width
;
2558 r
.height
= or->height
;
2559 r
.pitches
[0] = or->pitch
;
2560 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
2561 r
.handles
[0] = or->handle
;
2563 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2566 if ((config
->min_width
> r
.width
) || (r
.width
> config
->max_width
))
2569 if ((config
->min_height
> r
.height
) || (r
.height
> config
->max_height
))
2572 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, &r
);
2574 DRM_DEBUG_KMS("could not create framebuffer\n");
2578 mutex_lock(&file_priv
->fbs_lock
);
2579 or->fb_id
= fb
->base
.id
;
2580 list_add(&fb
->filp_head
, &file_priv
->fbs
);
2581 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
2582 mutex_unlock(&file_priv
->fbs_lock
);
2587 static int format_check(const struct drm_mode_fb_cmd2
*r
)
2589 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
2593 case DRM_FORMAT_RGB332
:
2594 case DRM_FORMAT_BGR233
:
2595 case DRM_FORMAT_XRGB4444
:
2596 case DRM_FORMAT_XBGR4444
:
2597 case DRM_FORMAT_RGBX4444
:
2598 case DRM_FORMAT_BGRX4444
:
2599 case DRM_FORMAT_ARGB4444
:
2600 case DRM_FORMAT_ABGR4444
:
2601 case DRM_FORMAT_RGBA4444
:
2602 case DRM_FORMAT_BGRA4444
:
2603 case DRM_FORMAT_XRGB1555
:
2604 case DRM_FORMAT_XBGR1555
:
2605 case DRM_FORMAT_RGBX5551
:
2606 case DRM_FORMAT_BGRX5551
:
2607 case DRM_FORMAT_ARGB1555
:
2608 case DRM_FORMAT_ABGR1555
:
2609 case DRM_FORMAT_RGBA5551
:
2610 case DRM_FORMAT_BGRA5551
:
2611 case DRM_FORMAT_RGB565
:
2612 case DRM_FORMAT_BGR565
:
2613 case DRM_FORMAT_RGB888
:
2614 case DRM_FORMAT_BGR888
:
2615 case DRM_FORMAT_XRGB8888
:
2616 case DRM_FORMAT_XBGR8888
:
2617 case DRM_FORMAT_RGBX8888
:
2618 case DRM_FORMAT_BGRX8888
:
2619 case DRM_FORMAT_ARGB8888
:
2620 case DRM_FORMAT_ABGR8888
:
2621 case DRM_FORMAT_RGBA8888
:
2622 case DRM_FORMAT_BGRA8888
:
2623 case DRM_FORMAT_XRGB2101010
:
2624 case DRM_FORMAT_XBGR2101010
:
2625 case DRM_FORMAT_RGBX1010102
:
2626 case DRM_FORMAT_BGRX1010102
:
2627 case DRM_FORMAT_ARGB2101010
:
2628 case DRM_FORMAT_ABGR2101010
:
2629 case DRM_FORMAT_RGBA1010102
:
2630 case DRM_FORMAT_BGRA1010102
:
2631 case DRM_FORMAT_YUYV
:
2632 case DRM_FORMAT_YVYU
:
2633 case DRM_FORMAT_UYVY
:
2634 case DRM_FORMAT_VYUY
:
2635 case DRM_FORMAT_AYUV
:
2636 case DRM_FORMAT_NV12
:
2637 case DRM_FORMAT_NV21
:
2638 case DRM_FORMAT_NV16
:
2639 case DRM_FORMAT_NV61
:
2640 case DRM_FORMAT_NV24
:
2641 case DRM_FORMAT_NV42
:
2642 case DRM_FORMAT_YUV410
:
2643 case DRM_FORMAT_YVU410
:
2644 case DRM_FORMAT_YUV411
:
2645 case DRM_FORMAT_YVU411
:
2646 case DRM_FORMAT_YUV420
:
2647 case DRM_FORMAT_YVU420
:
2648 case DRM_FORMAT_YUV422
:
2649 case DRM_FORMAT_YVU422
:
2650 case DRM_FORMAT_YUV444
:
2651 case DRM_FORMAT_YVU444
:
2654 DRM_DEBUG_KMS("invalid pixel format %s\n",
2655 drm_get_format_name(r
->pixel_format
));
2660 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
2662 int ret
, hsub
, vsub
, num_planes
, i
;
2664 ret
= format_check(r
);
2666 DRM_DEBUG_KMS("bad framebuffer format %s\n",
2667 drm_get_format_name(r
->pixel_format
));
2671 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
2672 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
2673 num_planes
= drm_format_num_planes(r
->pixel_format
);
2675 if (r
->width
== 0 || r
->width
% hsub
) {
2676 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->height
);
2680 if (r
->height
== 0 || r
->height
% vsub
) {
2681 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
2685 for (i
= 0; i
< num_planes
; i
++) {
2686 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
2687 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
2688 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
2690 if (!r
->handles
[i
]) {
2691 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
2695 if ((uint64_t) width
* cpp
> UINT_MAX
)
2698 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
2701 if (r
->pitches
[i
] < width
* cpp
) {
2702 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
2711 * drm_mode_addfb2 - add an FB to the graphics configuration
2712 * @dev: drm device for the ioctl
2713 * @data: data pointer for the ioctl
2714 * @file_priv: drm file for the ioctl call
2716 * Add a new FB to the specified CRTC, given a user request with format. This is
2717 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
2718 * and uses fourcc codes as pixel format specifiers.
2720 * Called by the user via ioctl.
2723 * Zero on success, errno on failure.
2725 int drm_mode_addfb2(struct drm_device
*dev
,
2726 void *data
, struct drm_file
*file_priv
)
2728 struct drm_mode_fb_cmd2
*r
= data
;
2729 struct drm_mode_config
*config
= &dev
->mode_config
;
2730 struct drm_framebuffer
*fb
;
2733 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2736 if (r
->flags
& ~DRM_MODE_FB_INTERLACED
) {
2737 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
2741 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
2742 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
2743 r
->width
, config
->min_width
, config
->max_width
);
2746 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
2747 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
2748 r
->height
, config
->min_height
, config
->max_height
);
2752 ret
= framebuffer_check(r
);
2756 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
2758 DRM_DEBUG_KMS("could not create framebuffer\n");
2762 mutex_lock(&file_priv
->fbs_lock
);
2763 r
->fb_id
= fb
->base
.id
;
2764 list_add(&fb
->filp_head
, &file_priv
->fbs
);
2765 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
2766 mutex_unlock(&file_priv
->fbs_lock
);
2773 * drm_mode_rmfb - remove an FB from the configuration
2774 * @dev: drm device for the ioctl
2775 * @data: data pointer for the ioctl
2776 * @file_priv: drm file for the ioctl call
2778 * Remove the FB specified by the user.
2780 * Called by the user via ioctl.
2783 * Zero on success, errno on failure.
2785 int drm_mode_rmfb(struct drm_device
*dev
,
2786 void *data
, struct drm_file
*file_priv
)
2788 struct drm_framebuffer
*fb
= NULL
;
2789 struct drm_framebuffer
*fbl
= NULL
;
2790 uint32_t *id
= data
;
2793 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2796 mutex_lock(&file_priv
->fbs_lock
);
2797 mutex_lock(&dev
->mode_config
.fb_lock
);
2798 fb
= __drm_framebuffer_lookup(dev
, *id
);
2802 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
2808 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2809 __drm_framebuffer_unregister(dev
, fb
);
2811 list_del_init(&fb
->filp_head
);
2812 mutex_unlock(&dev
->mode_config
.fb_lock
);
2813 mutex_unlock(&file_priv
->fbs_lock
);
2815 drm_framebuffer_remove(fb
);
2820 mutex_unlock(&dev
->mode_config
.fb_lock
);
2821 mutex_unlock(&file_priv
->fbs_lock
);
2827 * drm_mode_getfb - get FB info
2828 * @dev: drm device for the ioctl
2829 * @data: data pointer for the ioctl
2830 * @file_priv: drm file for the ioctl call
2832 * Lookup the FB given its ID and return info about it.
2834 * Called by the user via ioctl.
2837 * Zero on success, errno on failure.
2839 int drm_mode_getfb(struct drm_device
*dev
,
2840 void *data
, struct drm_file
*file_priv
)
2842 struct drm_mode_fb_cmd
*r
= data
;
2843 struct drm_framebuffer
*fb
;
2846 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2849 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
2853 r
->height
= fb
->height
;
2854 r
->width
= fb
->width
;
2855 r
->depth
= fb
->depth
;
2856 r
->bpp
= fb
->bits_per_pixel
;
2857 r
->pitch
= fb
->pitches
[0];
2858 if (fb
->funcs
->create_handle
) {
2859 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
2860 drm_is_control_client(file_priv
)) {
2861 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
2864 /* GET_FB() is an unprivileged ioctl so we must not
2865 * return a buffer-handle to non-master processes! For
2866 * backwards-compatibility reasons, we cannot make
2867 * GET_FB() privileged, so just return an invalid handle
2868 * for non-masters. */
2876 drm_framebuffer_unreference(fb
);
2882 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
2883 * @dev: drm device for the ioctl
2884 * @data: data pointer for the ioctl
2885 * @file_priv: drm file for the ioctl call
2887 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
2888 * rectangle list. Generic userspace which does frontbuffer rendering must call
2889 * this ioctl to flush out the changes on manual-update display outputs, e.g.
2890 * usb display-link, mipi manual update panels or edp panel self refresh modes.
2892 * Modesetting drivers which always update the frontbuffer do not need to
2893 * implement the corresponding ->dirty framebuffer callback.
2895 * Called by the user via ioctl.
2898 * Zero on success, errno on failure.
2900 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
2901 void *data
, struct drm_file
*file_priv
)
2903 struct drm_clip_rect __user
*clips_ptr
;
2904 struct drm_clip_rect
*clips
= NULL
;
2905 struct drm_mode_fb_dirty_cmd
*r
= data
;
2906 struct drm_framebuffer
*fb
;
2911 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2914 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
2918 num_clips
= r
->num_clips
;
2919 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
2921 if (!num_clips
!= !clips_ptr
) {
2926 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
2928 /* If userspace annotates copy, clips must come in pairs */
2929 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
2934 if (num_clips
&& clips_ptr
) {
2935 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
2939 clips
= kzalloc(num_clips
* sizeof(*clips
), GFP_KERNEL
);
2945 ret
= copy_from_user(clips
, clips_ptr
,
2946 num_clips
* sizeof(*clips
));
2953 if (fb
->funcs
->dirty
) {
2954 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
2963 drm_framebuffer_unreference(fb
);
2970 * drm_fb_release - remove and free the FBs on this file
2971 * @priv: drm file for the ioctl
2973 * Destroy all the FBs associated with @filp.
2975 * Called by the user via ioctl.
2978 * Zero on success, errno on failure.
2980 void drm_fb_release(struct drm_file
*priv
)
2982 struct drm_device
*dev
= priv
->minor
->dev
;
2983 struct drm_framebuffer
*fb
, *tfb
;
2985 mutex_lock(&priv
->fbs_lock
);
2986 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
2988 mutex_lock(&dev
->mode_config
.fb_lock
);
2989 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2990 __drm_framebuffer_unregister(dev
, fb
);
2991 mutex_unlock(&dev
->mode_config
.fb_lock
);
2993 list_del_init(&fb
->filp_head
);
2995 /* This will also drop the fpriv->fbs reference. */
2996 drm_framebuffer_remove(fb
);
2998 mutex_unlock(&priv
->fbs_lock
);
3002 * drm_property_create - create a new property type
3004 * @flags: flags specifying the property type
3005 * @name: name of the property
3006 * @num_values: number of pre-defined values
3008 * This creates a new generic drm property which can then be attached to a drm
3009 * object with drm_object_attach_property. The returned property object must be
3010 * freed with drm_property_destroy.
3013 * A pointer to the newly created property on success, NULL on failure.
3015 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3016 const char *name
, int num_values
)
3018 struct drm_property
*property
= NULL
;
3021 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3026 property
->values
= kzalloc(sizeof(uint64_t)*num_values
, GFP_KERNEL
);
3027 if (!property
->values
)
3031 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3035 property
->flags
= flags
;
3036 property
->num_values
= num_values
;
3037 INIT_LIST_HEAD(&property
->enum_blob_list
);
3040 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3041 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3044 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3047 kfree(property
->values
);
3051 EXPORT_SYMBOL(drm_property_create
);
3054 * drm_property_create - create a new enumeration property type
3056 * @flags: flags specifying the property type
3057 * @name: name of the property
3058 * @props: enumeration lists with property values
3059 * @num_values: number of pre-defined values
3061 * This creates a new generic drm property which can then be attached to a drm
3062 * object with drm_object_attach_property. The returned property object must be
3063 * freed with drm_property_destroy.
3065 * Userspace is only allowed to set one of the predefined values for enumeration
3069 * A pointer to the newly created property on success, NULL on failure.
3071 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3073 const struct drm_prop_enum_list
*props
,
3076 struct drm_property
*property
;
3079 flags
|= DRM_MODE_PROP_ENUM
;
3081 property
= drm_property_create(dev
, flags
, name
, num_values
);
3085 for (i
= 0; i
< num_values
; i
++) {
3086 ret
= drm_property_add_enum(property
, i
,
3090 drm_property_destroy(dev
, property
);
3097 EXPORT_SYMBOL(drm_property_create_enum
);
3100 * drm_property_create - create a new bitmask property type
3102 * @flags: flags specifying the property type
3103 * @name: name of the property
3104 * @props: enumeration lists with property bitflags
3105 * @num_values: number of pre-defined values
3107 * This creates a new generic drm property which can then be attached to a drm
3108 * object with drm_object_attach_property. The returned property object must be
3109 * freed with drm_property_destroy.
3111 * Compared to plain enumeration properties userspace is allowed to set any
3112 * or'ed together combination of the predefined property bitflag values
3115 * A pointer to the newly created property on success, NULL on failure.
3117 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3118 int flags
, const char *name
,
3119 const struct drm_prop_enum_list
*props
,
3122 struct drm_property
*property
;
3125 flags
|= DRM_MODE_PROP_BITMASK
;
3127 property
= drm_property_create(dev
, flags
, name
, num_values
);
3131 for (i
= 0; i
< num_values
; i
++) {
3132 ret
= drm_property_add_enum(property
, i
,
3136 drm_property_destroy(dev
, property
);
3143 EXPORT_SYMBOL(drm_property_create_bitmask
);
3146 * drm_property_create - create a new ranged property type
3148 * @flags: flags specifying the property type
3149 * @name: name of the property
3150 * @min: minimum value of the property
3151 * @max: maximum value of the property
3153 * This creates a new generic drm property which can then be attached to a drm
3154 * object with drm_object_attach_property. The returned property object must be
3155 * freed with drm_property_destroy.
3157 * Userspace is allowed to set any interger value in the (min, max) range
3161 * A pointer to the newly created property on success, NULL on failure.
3163 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3165 uint64_t min
, uint64_t max
)
3167 struct drm_property
*property
;
3169 flags
|= DRM_MODE_PROP_RANGE
;
3171 property
= drm_property_create(dev
, flags
, name
, 2);
3175 property
->values
[0] = min
;
3176 property
->values
[1] = max
;
3180 EXPORT_SYMBOL(drm_property_create_range
);
3183 * drm_property_add_enum - add a possible value to an enumeration property
3184 * @property: enumeration property to change
3185 * @index: index of the new enumeration
3186 * @value: value of the new enumeration
3187 * @name: symbolic name of the new enumeration
3189 * This functions adds enumerations to a property.
3191 * It's use is deprecated, drivers should use one of the more specific helpers
3192 * to directly create the property with all enumerations already attached.
3195 * Zero on success, error code on failure.
3197 int drm_property_add_enum(struct drm_property
*property
, int index
,
3198 uint64_t value
, const char *name
)
3200 struct drm_property_enum
*prop_enum
;
3202 if (!(property
->flags
& (DRM_MODE_PROP_ENUM
| DRM_MODE_PROP_BITMASK
)))
3206 * Bitmask enum properties have the additional constraint of values
3209 if ((property
->flags
& DRM_MODE_PROP_BITMASK
) && (value
> 63))
3212 if (!list_empty(&property
->enum_blob_list
)) {
3213 list_for_each_entry(prop_enum
, &property
->enum_blob_list
, head
) {
3214 if (prop_enum
->value
== value
) {
3215 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3216 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3222 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3226 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3227 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3228 prop_enum
->value
= value
;
3230 property
->values
[index
] = value
;
3231 list_add_tail(&prop_enum
->head
, &property
->enum_blob_list
);
3234 EXPORT_SYMBOL(drm_property_add_enum
);
3237 * drm_property_destroy - destroy a drm property
3239 * @property: property to destry
3241 * This function frees a property including any attached resources like
3242 * enumeration values.
3244 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3246 struct drm_property_enum
*prop_enum
, *pt
;
3248 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_blob_list
, head
) {
3249 list_del(&prop_enum
->head
);
3253 if (property
->num_values
)
3254 kfree(property
->values
);
3255 drm_mode_object_put(dev
, &property
->base
);
3256 list_del(&property
->head
);
3259 EXPORT_SYMBOL(drm_property_destroy
);
3262 * drm_object_attach_property - attach a property to a modeset object
3263 * @obj: drm modeset object
3264 * @property: property to attach
3265 * @init_val: initial value of the property
3267 * This attaches the given property to the modeset object with the given initial
3268 * value. Currently this function cannot fail since the properties are stored in
3269 * a statically sized array.
3271 void drm_object_attach_property(struct drm_mode_object
*obj
,
3272 struct drm_property
*property
,
3275 int count
= obj
->properties
->count
;
3277 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3278 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3279 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3280 "you see this message on the same object type.\n",
3285 obj
->properties
->ids
[count
] = property
->base
.id
;
3286 obj
->properties
->values
[count
] = init_val
;
3287 obj
->properties
->count
++;
3289 EXPORT_SYMBOL(drm_object_attach_property
);
3292 * drm_object_property_set_value - set the value of a property
3293 * @obj: drm mode object to set property value for
3294 * @property: property to set
3295 * @val: value the property should be set to
3297 * This functions sets a given property on a given object. This function only
3298 * changes the software state of the property, it does not call into the
3299 * driver's ->set_property callback.
3302 * Zero on success, error code on failure.
3304 int drm_object_property_set_value(struct drm_mode_object
*obj
,
3305 struct drm_property
*property
, uint64_t val
)
3309 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3310 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3311 obj
->properties
->values
[i
] = val
;
3318 EXPORT_SYMBOL(drm_object_property_set_value
);
3321 * drm_object_property_get_value - retrieve the value of a property
3322 * @obj: drm mode object to get property value from
3323 * @property: property to retrieve
3324 * @val: storage for the property value
3326 * This function retrieves the softare state of the given property for the given
3327 * property. Since there is no driver callback to retrieve the current property
3328 * value this might be out of sync with the hardware, depending upon the driver
3332 * Zero on success, error code on failure.
3334 int drm_object_property_get_value(struct drm_mode_object
*obj
,
3335 struct drm_property
*property
, uint64_t *val
)
3339 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3340 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3341 *val
= obj
->properties
->values
[i
];
3348 EXPORT_SYMBOL(drm_object_property_get_value
);
3351 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3354 * @file_priv: DRM file info
3356 * This function retrieves the current value for an connectors's property.
3358 * Called by the user via ioctl.
3361 * Zero on success, errno on failure.
3363 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
3364 void *data
, struct drm_file
*file_priv
)
3366 struct drm_mode_object
*obj
;
3367 struct drm_mode_get_property
*out_resp
= data
;
3368 struct drm_property
*property
;
3371 int value_count
= 0;
3374 struct drm_property_enum
*prop_enum
;
3375 struct drm_mode_property_enum __user
*enum_ptr
;
3376 struct drm_property_blob
*prop_blob
;
3377 uint32_t __user
*blob_id_ptr
;
3378 uint64_t __user
*values_ptr
;
3379 uint32_t __user
*blob_length_ptr
;
3381 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3384 drm_modeset_lock_all(dev
);
3385 obj
= drm_mode_object_find(dev
, out_resp
->prop_id
, DRM_MODE_OBJECT_PROPERTY
);
3390 property
= obj_to_property(obj
);
3392 if (property
->flags
& (DRM_MODE_PROP_ENUM
| DRM_MODE_PROP_BITMASK
)) {
3393 list_for_each_entry(prop_enum
, &property
->enum_blob_list
, head
)
3395 } else if (property
->flags
& DRM_MODE_PROP_BLOB
) {
3396 list_for_each_entry(prop_blob
, &property
->enum_blob_list
, head
)
3400 value_count
= property
->num_values
;
3402 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
3403 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
3404 out_resp
->flags
= property
->flags
;
3406 if ((out_resp
->count_values
>= value_count
) && value_count
) {
3407 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
3408 for (i
= 0; i
< value_count
; i
++) {
3409 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
3415 out_resp
->count_values
= value_count
;
3417 if (property
->flags
& (DRM_MODE_PROP_ENUM
| DRM_MODE_PROP_BITMASK
)) {
3418 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
3420 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
3421 list_for_each_entry(prop_enum
, &property
->enum_blob_list
, head
) {
3423 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
3428 if (copy_to_user(&enum_ptr
[copied
].name
,
3429 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
3436 out_resp
->count_enum_blobs
= enum_count
;
3439 if (property
->flags
& DRM_MODE_PROP_BLOB
) {
3440 if ((out_resp
->count_enum_blobs
>= blob_count
) && blob_count
) {
3442 blob_id_ptr
= (uint32_t __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
3443 blob_length_ptr
= (uint32_t __user
*)(unsigned long)out_resp
->values_ptr
;
3445 list_for_each_entry(prop_blob
, &property
->enum_blob_list
, head
) {
3446 if (put_user(prop_blob
->base
.id
, blob_id_ptr
+ copied
)) {
3451 if (put_user(prop_blob
->length
, blob_length_ptr
+ copied
)) {
3459 out_resp
->count_enum_blobs
= blob_count
;
3462 drm_modeset_unlock_all(dev
);
3466 static struct drm_property_blob
*drm_property_create_blob(struct drm_device
*dev
, int length
,
3469 struct drm_property_blob
*blob
;
3472 if (!length
|| !data
)
3475 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
3479 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
3485 blob
->length
= length
;
3487 memcpy(blob
->data
, data
, length
);
3489 list_add_tail(&blob
->head
, &dev
->mode_config
.property_blob_list
);
3493 static void drm_property_destroy_blob(struct drm_device
*dev
,
3494 struct drm_property_blob
*blob
)
3496 drm_mode_object_put(dev
, &blob
->base
);
3497 list_del(&blob
->head
);
3502 * drm_mode_getblob_ioctl - get the contents of a blob property value
3505 * @file_priv: DRM file info
3507 * This function retrieves the contents of a blob property. The value stored in
3508 * an object's blob property is just a normal modeset object id.
3510 * Called by the user via ioctl.
3513 * Zero on success, errno on failure.
3515 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
3516 void *data
, struct drm_file
*file_priv
)
3518 struct drm_mode_object
*obj
;
3519 struct drm_mode_get_blob
*out_resp
= data
;
3520 struct drm_property_blob
*blob
;
3522 void __user
*blob_ptr
;
3524 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3527 drm_modeset_lock_all(dev
);
3528 obj
= drm_mode_object_find(dev
, out_resp
->blob_id
, DRM_MODE_OBJECT_BLOB
);
3533 blob
= obj_to_blob(obj
);
3535 if (out_resp
->length
== blob
->length
) {
3536 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
3537 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)){
3542 out_resp
->length
= blob
->length
;
3545 drm_modeset_unlock_all(dev
);
3550 * drm_mode_connector_update_edid_property - update the edid property of a connector
3551 * @connector: drm connector
3552 * @edid: new value of the edid property
3554 * This function creates a new blob modeset object and assigns its id to the
3555 * connector's edid property.
3558 * Zero on success, errno on failure.
3560 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
3563 struct drm_device
*dev
= connector
->dev
;
3566 if (connector
->edid_blob_ptr
)
3567 drm_property_destroy_blob(dev
, connector
->edid_blob_ptr
);
3569 /* Delete edid, when there is none. */
3571 connector
->edid_blob_ptr
= NULL
;
3572 ret
= drm_object_property_set_value(&connector
->base
, dev
->mode_config
.edid_property
, 0);
3576 size
= EDID_LENGTH
* (1 + edid
->extensions
);
3577 connector
->edid_blob_ptr
= drm_property_create_blob(connector
->dev
,
3579 if (!connector
->edid_blob_ptr
)
3582 ret
= drm_object_property_set_value(&connector
->base
,
3583 dev
->mode_config
.edid_property
,
3584 connector
->edid_blob_ptr
->base
.id
);
3588 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
3590 static bool drm_property_change_is_valid(struct drm_property
*property
,
3593 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
3595 if (property
->flags
& DRM_MODE_PROP_RANGE
) {
3596 if (value
< property
->values
[0] || value
> property
->values
[1])
3599 } else if (property
->flags
& DRM_MODE_PROP_BITMASK
) {
3601 uint64_t valid_mask
= 0;
3602 for (i
= 0; i
< property
->num_values
; i
++)
3603 valid_mask
|= (1ULL << property
->values
[i
]);
3604 return !(value
& ~valid_mask
);
3605 } else if (property
->flags
& DRM_MODE_PROP_BLOB
) {
3606 /* Only the driver knows */
3610 for (i
= 0; i
< property
->num_values
; i
++)
3611 if (property
->values
[i
] == value
)
3618 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
3621 * @file_priv: DRM file info
3623 * This function sets the current value for a connectors's property. It also
3624 * calls into a driver's ->set_property callback to update the hardware state
3626 * Called by the user via ioctl.
3629 * Zero on success, errno on failure.
3631 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
3632 void *data
, struct drm_file
*file_priv
)
3634 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
3635 struct drm_mode_obj_set_property obj_set_prop
= {
3636 .value
= conn_set_prop
->value
,
3637 .prop_id
= conn_set_prop
->prop_id
,
3638 .obj_id
= conn_set_prop
->connector_id
,
3639 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
3642 /* It does all the locking and checking we need */
3643 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
3646 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
3647 struct drm_property
*property
,
3651 struct drm_connector
*connector
= obj_to_connector(obj
);
3653 /* Do DPMS ourselves */
3654 if (property
== connector
->dev
->mode_config
.dpms_property
) {
3655 if (connector
->funcs
->dpms
)
3656 (*connector
->funcs
->dpms
)(connector
, (int)value
);
3658 } else if (connector
->funcs
->set_property
)
3659 ret
= connector
->funcs
->set_property(connector
, property
, value
);
3661 /* store the property value if successful */
3663 drm_object_property_set_value(&connector
->base
, property
, value
);
3667 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
3668 struct drm_property
*property
,
3672 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
3674 if (crtc
->funcs
->set_property
)
3675 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
3677 drm_object_property_set_value(obj
, property
, value
);
3682 static int drm_mode_plane_set_obj_prop(struct drm_mode_object
*obj
,
3683 struct drm_property
*property
,
3687 struct drm_plane
*plane
= obj_to_plane(obj
);
3689 if (plane
->funcs
->set_property
)
3690 ret
= plane
->funcs
->set_property(plane
, property
, value
);
3692 drm_object_property_set_value(obj
, property
, value
);
3698 * drm_mode_getproperty_ioctl - get the current value of a object's property
3701 * @file_priv: DRM file info
3703 * This function retrieves the current value for an object's property. Compared
3704 * to the connector specific ioctl this one is extended to also work on crtc and
3707 * Called by the user via ioctl.
3710 * Zero on success, errno on failure.
3712 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
3713 struct drm_file
*file_priv
)
3715 struct drm_mode_obj_get_properties
*arg
= data
;
3716 struct drm_mode_object
*obj
;
3720 int props_count
= 0;
3721 uint32_t __user
*props_ptr
;
3722 uint64_t __user
*prop_values_ptr
;
3724 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3727 drm_modeset_lock_all(dev
);
3729 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
3734 if (!obj
->properties
) {
3739 props_count
= obj
->properties
->count
;
3741 /* This ioctl is called twice, once to determine how much space is
3742 * needed, and the 2nd time to fill it. */
3743 if ((arg
->count_props
>= props_count
) && props_count
) {
3745 props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->props_ptr
);
3746 prop_values_ptr
= (uint64_t __user
*)(unsigned long)
3747 (arg
->prop_values_ptr
);
3748 for (i
= 0; i
< props_count
; i
++) {
3749 if (put_user(obj
->properties
->ids
[i
],
3750 props_ptr
+ copied
)) {
3754 if (put_user(obj
->properties
->values
[i
],
3755 prop_values_ptr
+ copied
)) {
3762 arg
->count_props
= props_count
;
3764 drm_modeset_unlock_all(dev
);
3769 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
3772 * @file_priv: DRM file info
3774 * This function sets the current value for an object's property. It also calls
3775 * into a driver's ->set_property callback to update the hardware state.
3776 * Compared to the connector specific ioctl this one is extended to also work on
3777 * crtc and plane objects.
3779 * Called by the user via ioctl.
3782 * Zero on success, errno on failure.
3784 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
3785 struct drm_file
*file_priv
)
3787 struct drm_mode_obj_set_property
*arg
= data
;
3788 struct drm_mode_object
*arg_obj
;
3789 struct drm_mode_object
*prop_obj
;
3790 struct drm_property
*property
;
3794 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3797 drm_modeset_lock_all(dev
);
3799 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
3804 if (!arg_obj
->properties
)
3807 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
3808 if (arg_obj
->properties
->ids
[i
] == arg
->prop_id
)
3811 if (i
== arg_obj
->properties
->count
)
3814 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
3815 DRM_MODE_OBJECT_PROPERTY
);
3820 property
= obj_to_property(prop_obj
);
3822 if (!drm_property_change_is_valid(property
, arg
->value
))
3825 switch (arg_obj
->type
) {
3826 case DRM_MODE_OBJECT_CONNECTOR
:
3827 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
3830 case DRM_MODE_OBJECT_CRTC
:
3831 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
3833 case DRM_MODE_OBJECT_PLANE
:
3834 ret
= drm_mode_plane_set_obj_prop(arg_obj
, property
, arg
->value
);
3839 drm_modeset_unlock_all(dev
);
3844 * drm_mode_connector_attach_encoder - attach a connector to an encoder
3845 * @connector: connector to attach
3846 * @encoder: encoder to attach @connector to
3848 * This function links up a connector to an encoder. Note that the routing
3849 * restrictions between encoders and crtcs are exposed to userspace through the
3850 * possible_clones and possible_crtcs bitmasks.
3853 * Zero on success, errno on failure.
3855 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
3856 struct drm_encoder
*encoder
)
3860 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
3861 if (connector
->encoder_ids
[i
] == 0) {
3862 connector
->encoder_ids
[i
] = encoder
->base
.id
;
3868 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
3871 * drm_mode_crtc_set_gamma_size - set the gamma table size
3872 * @crtc: CRTC to set the gamma table size for
3873 * @gamma_size: size of the gamma table
3875 * Drivers which support gamma tables should set this to the supported gamma
3876 * table size when initializing the CRTC. Currently the drm core only supports a
3877 * fixed gamma table size.
3880 * Zero on success, errno on failure.
3882 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
3885 crtc
->gamma_size
= gamma_size
;
3887 crtc
->gamma_store
= kzalloc(gamma_size
* sizeof(uint16_t) * 3, GFP_KERNEL
);
3888 if (!crtc
->gamma_store
) {
3889 crtc
->gamma_size
= 0;
3895 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
3898 * drm_mode_gamma_set_ioctl - set the gamma table
3901 * @file_priv: DRM file info
3903 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
3904 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
3906 * Called by the user via ioctl.
3909 * Zero on success, errno on failure.
3911 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
3912 void *data
, struct drm_file
*file_priv
)
3914 struct drm_mode_crtc_lut
*crtc_lut
= data
;
3915 struct drm_mode_object
*obj
;
3916 struct drm_crtc
*crtc
;
3917 void *r_base
, *g_base
, *b_base
;
3921 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3924 drm_modeset_lock_all(dev
);
3925 obj
= drm_mode_object_find(dev
, crtc_lut
->crtc_id
, DRM_MODE_OBJECT_CRTC
);
3930 crtc
= obj_to_crtc(obj
);
3932 if (crtc
->funcs
->gamma_set
== NULL
) {
3937 /* memcpy into gamma store */
3938 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
3943 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
3944 r_base
= crtc
->gamma_store
;
3945 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
3950 g_base
= r_base
+ size
;
3951 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
3956 b_base
= g_base
+ size
;
3957 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
3962 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
3965 drm_modeset_unlock_all(dev
);
3971 * drm_mode_gamma_get_ioctl - get the gamma table
3974 * @file_priv: DRM file info
3976 * Copy the current gamma table into the storage provided. This also provides
3977 * the gamma table size the driver expects, which can be used to size the
3978 * allocated storage.
3980 * Called by the user via ioctl.
3983 * Zero on success, errno on failure.
3985 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
3986 void *data
, struct drm_file
*file_priv
)
3988 struct drm_mode_crtc_lut
*crtc_lut
= data
;
3989 struct drm_mode_object
*obj
;
3990 struct drm_crtc
*crtc
;
3991 void *r_base
, *g_base
, *b_base
;
3995 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3998 drm_modeset_lock_all(dev
);
3999 obj
= drm_mode_object_find(dev
, crtc_lut
->crtc_id
, DRM_MODE_OBJECT_CRTC
);
4004 crtc
= obj_to_crtc(obj
);
4006 /* memcpy into gamma store */
4007 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4012 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4013 r_base
= crtc
->gamma_store
;
4014 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
4019 g_base
= r_base
+ size
;
4020 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
4025 b_base
= g_base
+ size
;
4026 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
4031 drm_modeset_unlock_all(dev
);
4036 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4039 * @file_priv: DRM file info
4041 * This schedules an asynchronous update on a given CRTC, called page flip.
4042 * Optionally a drm event is generated to signal the completion of the event.
4043 * Generic drivers cannot assume that a pageflip with changed framebuffer
4044 * properties (including driver specific metadata like tiling layout) will work,
4045 * but some drivers support e.g. pixel format changes through the pageflip
4048 * Called by the user via ioctl.
4051 * Zero on success, errno on failure.
4053 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
4054 void *data
, struct drm_file
*file_priv
)
4056 struct drm_mode_crtc_page_flip
*page_flip
= data
;
4057 struct drm_mode_object
*obj
;
4058 struct drm_crtc
*crtc
;
4059 struct drm_framebuffer
*fb
= NULL
, *old_fb
= NULL
;
4060 struct drm_pending_vblank_event
*e
= NULL
;
4061 unsigned long flags
;
4064 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
4065 page_flip
->reserved
!= 0)
4068 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
4071 obj
= drm_mode_object_find(dev
, page_flip
->crtc_id
, DRM_MODE_OBJECT_CRTC
);
4074 crtc
= obj_to_crtc(obj
);
4076 mutex_lock(&crtc
->mutex
);
4077 if (crtc
->fb
== NULL
) {
4078 /* The framebuffer is currently unbound, presumably
4079 * due to a hotplug event, that userspace has not
4086 if (crtc
->funcs
->page_flip
== NULL
)
4089 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
4095 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
4099 if (crtc
->fb
->pixel_format
!= fb
->pixel_format
) {
4100 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4105 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4107 spin_lock_irqsave(&dev
->event_lock
, flags
);
4108 if (file_priv
->event_space
< sizeof e
->event
) {
4109 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4112 file_priv
->event_space
-= sizeof e
->event
;
4113 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4115 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
4117 spin_lock_irqsave(&dev
->event_lock
, flags
);
4118 file_priv
->event_space
+= sizeof e
->event
;
4119 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4123 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
4124 e
->event
.base
.length
= sizeof e
->event
;
4125 e
->event
.user_data
= page_flip
->user_data
;
4126 e
->base
.event
= &e
->event
.base
;
4127 e
->base
.file_priv
= file_priv
;
4129 (void (*) (struct drm_pending_event
*)) kfree
;
4133 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
4135 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4136 spin_lock_irqsave(&dev
->event_lock
, flags
);
4137 file_priv
->event_space
+= sizeof e
->event
;
4138 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4141 /* Keep the old fb, don't unref it. */
4145 * Warn if the driver hasn't properly updated the crtc->fb
4146 * field to reflect that the new framebuffer is now used.
4147 * Failing to do so will screw with the reference counting
4150 WARN_ON(crtc
->fb
!= fb
);
4151 /* Unref only the old framebuffer. */
4157 drm_framebuffer_unreference(fb
);
4159 drm_framebuffer_unreference(old_fb
);
4160 mutex_unlock(&crtc
->mutex
);
4166 * drm_mode_config_reset - call ->reset callbacks
4169 * This functions calls all the crtc's, encoder's and connector's ->reset
4170 * callback. Drivers can use this in e.g. their driver load or resume code to
4171 * reset hardware and software state.
4173 void drm_mode_config_reset(struct drm_device
*dev
)
4175 struct drm_crtc
*crtc
;
4176 struct drm_encoder
*encoder
;
4177 struct drm_connector
*connector
;
4179 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
4180 if (crtc
->funcs
->reset
)
4181 crtc
->funcs
->reset(crtc
);
4183 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
4184 if (encoder
->funcs
->reset
)
4185 encoder
->funcs
->reset(encoder
);
4187 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
4188 connector
->status
= connector_status_unknown
;
4190 if (connector
->funcs
->reset
)
4191 connector
->funcs
->reset(connector
);
4194 EXPORT_SYMBOL(drm_mode_config_reset
);
4197 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4200 * @file_priv: DRM file info
4202 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4203 * TTM or something else entirely) and returns the resulting buffer handle. This
4204 * handle can then be wrapped up into a framebuffer modeset object.
4206 * Note that userspace is not allowed to use such objects for render
4207 * acceleration - drivers must create their own private ioctls for such a use
4210 * Called by the user via ioctl.
4213 * Zero on success, errno on failure.
4215 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
4216 void *data
, struct drm_file
*file_priv
)
4218 struct drm_mode_create_dumb
*args
= data
;
4219 u32 cpp
, stride
, size
;
4221 if (!dev
->driver
->dumb_create
)
4223 if (!args
->width
|| !args
->height
|| !args
->bpp
)
4226 /* overflow checks for 32bit size calculations */
4227 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
4228 if (cpp
> 0xffffffffU
/ args
->width
)
4230 stride
= cpp
* args
->width
;
4231 if (args
->height
> 0xffffffffU
/ stride
)
4234 /* test for wrap-around */
4235 size
= args
->height
* stride
;
4236 if (PAGE_ALIGN(size
) == 0)
4239 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
4243 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4246 * @file_priv: DRM file info
4248 * Allocate an offset in the drm device node's address space to be able to
4249 * memory map a dumb buffer.
4251 * Called by the user via ioctl.
4254 * Zero on success, errno on failure.
4256 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
4257 void *data
, struct drm_file
*file_priv
)
4259 struct drm_mode_map_dumb
*args
= data
;
4261 /* call driver ioctl to get mmap offset */
4262 if (!dev
->driver
->dumb_map_offset
)
4265 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
4269 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4272 * @file_priv: DRM file info
4274 * This destroys the userspace handle for the given dumb backing storage buffer.
4275 * Since buffer objects must be reference counted in the kernel a buffer object
4276 * won't be immediately freed if a framebuffer modeset object still uses it.
4278 * Called by the user via ioctl.
4281 * Zero on success, errno on failure.
4283 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
4284 void *data
, struct drm_file
*file_priv
)
4286 struct drm_mode_destroy_dumb
*args
= data
;
4288 if (!dev
->driver
->dumb_destroy
)
4291 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
4295 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4296 * @format: pixel format (DRM_FORMAT_*)
4297 * @depth: storage for the depth value
4298 * @bpp: storage for the bpp value
4300 * This only supports RGB formats here for compat with code that doesn't use
4301 * pixel formats directly yet.
4303 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
4308 case DRM_FORMAT_RGB332
:
4309 case DRM_FORMAT_BGR233
:
4313 case DRM_FORMAT_XRGB1555
:
4314 case DRM_FORMAT_XBGR1555
:
4315 case DRM_FORMAT_RGBX5551
:
4316 case DRM_FORMAT_BGRX5551
:
4317 case DRM_FORMAT_ARGB1555
:
4318 case DRM_FORMAT_ABGR1555
:
4319 case DRM_FORMAT_RGBA5551
:
4320 case DRM_FORMAT_BGRA5551
:
4324 case DRM_FORMAT_RGB565
:
4325 case DRM_FORMAT_BGR565
:
4329 case DRM_FORMAT_RGB888
:
4330 case DRM_FORMAT_BGR888
:
4334 case DRM_FORMAT_XRGB8888
:
4335 case DRM_FORMAT_XBGR8888
:
4336 case DRM_FORMAT_RGBX8888
:
4337 case DRM_FORMAT_BGRX8888
:
4341 case DRM_FORMAT_XRGB2101010
:
4342 case DRM_FORMAT_XBGR2101010
:
4343 case DRM_FORMAT_RGBX1010102
:
4344 case DRM_FORMAT_BGRX1010102
:
4345 case DRM_FORMAT_ARGB2101010
:
4346 case DRM_FORMAT_ABGR2101010
:
4347 case DRM_FORMAT_RGBA1010102
:
4348 case DRM_FORMAT_BGRA1010102
:
4352 case DRM_FORMAT_ARGB8888
:
4353 case DRM_FORMAT_ABGR8888
:
4354 case DRM_FORMAT_RGBA8888
:
4355 case DRM_FORMAT_BGRA8888
:
4360 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4361 drm_get_format_name(format
));
4367 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
4370 * drm_format_num_planes - get the number of planes for format
4371 * @format: pixel format (DRM_FORMAT_*)
4374 * The number of planes used by the specified pixel format.
4376 int drm_format_num_planes(uint32_t format
)
4379 case DRM_FORMAT_YUV410
:
4380 case DRM_FORMAT_YVU410
:
4381 case DRM_FORMAT_YUV411
:
4382 case DRM_FORMAT_YVU411
:
4383 case DRM_FORMAT_YUV420
:
4384 case DRM_FORMAT_YVU420
:
4385 case DRM_FORMAT_YUV422
:
4386 case DRM_FORMAT_YVU422
:
4387 case DRM_FORMAT_YUV444
:
4388 case DRM_FORMAT_YVU444
:
4390 case DRM_FORMAT_NV12
:
4391 case DRM_FORMAT_NV21
:
4392 case DRM_FORMAT_NV16
:
4393 case DRM_FORMAT_NV61
:
4394 case DRM_FORMAT_NV24
:
4395 case DRM_FORMAT_NV42
:
4401 EXPORT_SYMBOL(drm_format_num_planes
);
4404 * drm_format_plane_cpp - determine the bytes per pixel value
4405 * @format: pixel format (DRM_FORMAT_*)
4406 * @plane: plane index
4409 * The bytes per pixel value for the specified plane.
4411 int drm_format_plane_cpp(uint32_t format
, int plane
)
4416 if (plane
>= drm_format_num_planes(format
))
4420 case DRM_FORMAT_YUYV
:
4421 case DRM_FORMAT_YVYU
:
4422 case DRM_FORMAT_UYVY
:
4423 case DRM_FORMAT_VYUY
:
4425 case DRM_FORMAT_NV12
:
4426 case DRM_FORMAT_NV21
:
4427 case DRM_FORMAT_NV16
:
4428 case DRM_FORMAT_NV61
:
4429 case DRM_FORMAT_NV24
:
4430 case DRM_FORMAT_NV42
:
4431 return plane
? 2 : 1;
4432 case DRM_FORMAT_YUV410
:
4433 case DRM_FORMAT_YVU410
:
4434 case DRM_FORMAT_YUV411
:
4435 case DRM_FORMAT_YVU411
:
4436 case DRM_FORMAT_YUV420
:
4437 case DRM_FORMAT_YVU420
:
4438 case DRM_FORMAT_YUV422
:
4439 case DRM_FORMAT_YVU422
:
4440 case DRM_FORMAT_YUV444
:
4441 case DRM_FORMAT_YVU444
:
4444 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
4448 EXPORT_SYMBOL(drm_format_plane_cpp
);
4451 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4452 * @format: pixel format (DRM_FORMAT_*)
4455 * The horizontal chroma subsampling factor for the
4456 * specified pixel format.
4458 int drm_format_horz_chroma_subsampling(uint32_t format
)
4461 case DRM_FORMAT_YUV411
:
4462 case DRM_FORMAT_YVU411
:
4463 case DRM_FORMAT_YUV410
:
4464 case DRM_FORMAT_YVU410
:
4466 case DRM_FORMAT_YUYV
:
4467 case DRM_FORMAT_YVYU
:
4468 case DRM_FORMAT_UYVY
:
4469 case DRM_FORMAT_VYUY
:
4470 case DRM_FORMAT_NV12
:
4471 case DRM_FORMAT_NV21
:
4472 case DRM_FORMAT_NV16
:
4473 case DRM_FORMAT_NV61
:
4474 case DRM_FORMAT_YUV422
:
4475 case DRM_FORMAT_YVU422
:
4476 case DRM_FORMAT_YUV420
:
4477 case DRM_FORMAT_YVU420
:
4483 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
4486 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4487 * @format: pixel format (DRM_FORMAT_*)
4490 * The vertical chroma subsampling factor for the
4491 * specified pixel format.
4493 int drm_format_vert_chroma_subsampling(uint32_t format
)
4496 case DRM_FORMAT_YUV410
:
4497 case DRM_FORMAT_YVU410
:
4499 case DRM_FORMAT_YUV420
:
4500 case DRM_FORMAT_YVU420
:
4501 case DRM_FORMAT_NV12
:
4502 case DRM_FORMAT_NV21
:
4508 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
4511 * drm_mode_config_init - initialize DRM mode_configuration structure
4514 * Initialize @dev's mode_config structure, used for tracking the graphics
4515 * configuration of @dev.
4517 * Since this initializes the modeset locks, no locking is possible. Which is no
4518 * problem, since this should happen single threaded at init time. It is the
4519 * driver's problem to ensure this guarantee.
4522 void drm_mode_config_init(struct drm_device
*dev
)
4524 mutex_init(&dev
->mode_config
.mutex
);
4525 mutex_init(&dev
->mode_config
.idr_mutex
);
4526 mutex_init(&dev
->mode_config
.fb_lock
);
4527 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
4528 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
4529 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
4530 INIT_LIST_HEAD(&dev
->mode_config
.bridge_list
);
4531 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
4532 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
4533 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
4534 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
4535 idr_init(&dev
->mode_config
.crtc_idr
);
4537 drm_modeset_lock_all(dev
);
4538 drm_mode_create_standard_connector_properties(dev
);
4539 drm_modeset_unlock_all(dev
);
4541 /* Just to be sure */
4542 dev
->mode_config
.num_fb
= 0;
4543 dev
->mode_config
.num_connector
= 0;
4544 dev
->mode_config
.num_crtc
= 0;
4545 dev
->mode_config
.num_encoder
= 0;
4546 dev
->mode_config
.num_overlay_plane
= 0;
4547 dev
->mode_config
.num_total_plane
= 0;
4549 EXPORT_SYMBOL(drm_mode_config_init
);
4552 * drm_mode_config_cleanup - free up DRM mode_config info
4555 * Free up all the connectors and CRTCs associated with this DRM device, then
4556 * free up the framebuffers and associated buffer objects.
4558 * Note that since this /should/ happen single-threaded at driver/device
4559 * teardown time, no locking is required. It's the driver's job to ensure that
4560 * this guarantee actually holds true.
4562 * FIXME: cleanup any dangling user buffer objects too
4564 void drm_mode_config_cleanup(struct drm_device
*dev
)
4566 struct drm_connector
*connector
, *ot
;
4567 struct drm_crtc
*crtc
, *ct
;
4568 struct drm_encoder
*encoder
, *enct
;
4569 struct drm_bridge
*bridge
, *brt
;
4570 struct drm_framebuffer
*fb
, *fbt
;
4571 struct drm_property
*property
, *pt
;
4572 struct drm_property_blob
*blob
, *bt
;
4573 struct drm_plane
*plane
, *plt
;
4575 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
4577 encoder
->funcs
->destroy(encoder
);
4580 list_for_each_entry_safe(bridge
, brt
,
4581 &dev
->mode_config
.bridge_list
, head
) {
4582 bridge
->funcs
->destroy(bridge
);
4585 list_for_each_entry_safe(connector
, ot
,
4586 &dev
->mode_config
.connector_list
, head
) {
4587 connector
->funcs
->destroy(connector
);
4590 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
4592 drm_property_destroy(dev
, property
);
4595 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
4597 drm_property_destroy_blob(dev
, blob
);
4601 * Single-threaded teardown context, so it's not required to grab the
4602 * fb_lock to protect against concurrent fb_list access. Contrary, it
4603 * would actually deadlock with the drm_framebuffer_cleanup function.
4605 * Also, if there are any framebuffers left, that's a driver leak now,
4606 * so politely WARN about this.
4608 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
4609 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
4610 drm_framebuffer_remove(fb
);
4613 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
4615 plane
->funcs
->destroy(plane
);
4618 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
4619 crtc
->funcs
->destroy(crtc
);
4622 idr_destroy(&dev
->mode_config
.crtc_idr
);
4624 EXPORT_SYMBOL(drm_mode_config_cleanup
);