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
;
1048 /* private planes are not exposed to userspace, but depending on
1049 * display hardware, might be convenient to allow sharing programming
1050 * for the scanout engine with the crtc implementation.
1053 list_add_tail(&plane
->head
, &dev
->mode_config
.plane_list
);
1054 dev
->mode_config
.num_plane
++;
1056 INIT_LIST_HEAD(&plane
->head
);
1060 drm_modeset_unlock_all(dev
);
1064 EXPORT_SYMBOL(drm_plane_init
);
1067 * drm_plane_cleanup - Clean up the core plane usage
1068 * @plane: plane to cleanup
1070 * This function cleans up @plane and removes it from the DRM mode setting
1071 * core. Note that the function does *not* free the plane structure itself,
1072 * this is the responsibility of the caller.
1074 void drm_plane_cleanup(struct drm_plane
*plane
)
1076 struct drm_device
*dev
= plane
->dev
;
1078 drm_modeset_lock_all(dev
);
1079 kfree(plane
->format_types
);
1080 drm_mode_object_put(dev
, &plane
->base
);
1081 /* if not added to a list, it must be a private plane */
1082 if (!list_empty(&plane
->head
)) {
1083 list_del(&plane
->head
);
1084 dev
->mode_config
.num_plane
--;
1086 drm_modeset_unlock_all(dev
);
1088 EXPORT_SYMBOL(drm_plane_cleanup
);
1091 * drm_plane_force_disable - Forcibly disable a plane
1092 * @plane: plane to disable
1094 * Forces the plane to be disabled.
1096 * Used when the plane's current framebuffer is destroyed,
1097 * and when restoring fbdev mode.
1099 void drm_plane_force_disable(struct drm_plane
*plane
)
1106 ret
= plane
->funcs
->disable_plane(plane
);
1108 DRM_ERROR("failed to disable plane with busy fb\n");
1109 /* disconnect the plane from the fb and crtc: */
1110 __drm_framebuffer_unreference(plane
->fb
);
1114 EXPORT_SYMBOL(drm_plane_force_disable
);
1116 static int drm_mode_create_standard_connector_properties(struct drm_device
*dev
)
1118 struct drm_property
*edid
;
1119 struct drm_property
*dpms
;
1122 * Standard properties (apply to all connectors)
1124 edid
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1125 DRM_MODE_PROP_IMMUTABLE
,
1127 dev
->mode_config
.edid_property
= edid
;
1129 dpms
= drm_property_create_enum(dev
, 0,
1130 "DPMS", drm_dpms_enum_list
,
1131 ARRAY_SIZE(drm_dpms_enum_list
));
1132 dev
->mode_config
.dpms_property
= dpms
;
1138 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1141 * Called by a driver the first time a DVI-I connector is made.
1143 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1145 struct drm_property
*dvi_i_selector
;
1146 struct drm_property
*dvi_i_subconnector
;
1148 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1152 drm_property_create_enum(dev
, 0,
1153 "select subconnector",
1154 drm_dvi_i_select_enum_list
,
1155 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1156 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1158 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1160 drm_dvi_i_subconnector_enum_list
,
1161 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1162 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1166 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1169 * drm_create_tv_properties - create TV specific connector properties
1171 * @num_modes: number of different TV formats (modes) supported
1172 * @modes: array of pointers to strings containing name of each format
1174 * Called by a driver's TV initialization routine, this function creates
1175 * the TV specific connector properties for a given device. Caller is
1176 * responsible for allocating a list of format names and passing them to
1179 int drm_mode_create_tv_properties(struct drm_device
*dev
, int num_modes
,
1182 struct drm_property
*tv_selector
;
1183 struct drm_property
*tv_subconnector
;
1186 if (dev
->mode_config
.tv_select_subconnector_property
)
1190 * Basic connector properties
1192 tv_selector
= drm_property_create_enum(dev
, 0,
1193 "select subconnector",
1194 drm_tv_select_enum_list
,
1195 ARRAY_SIZE(drm_tv_select_enum_list
));
1196 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1199 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1201 drm_tv_subconnector_enum_list
,
1202 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1203 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1206 * Other, TV specific properties: margins & TV modes.
1208 dev
->mode_config
.tv_left_margin_property
=
1209 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1211 dev
->mode_config
.tv_right_margin_property
=
1212 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1214 dev
->mode_config
.tv_top_margin_property
=
1215 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1217 dev
->mode_config
.tv_bottom_margin_property
=
1218 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1220 dev
->mode_config
.tv_mode_property
=
1221 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1223 for (i
= 0; i
< num_modes
; i
++)
1224 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1227 dev
->mode_config
.tv_brightness_property
=
1228 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1230 dev
->mode_config
.tv_contrast_property
=
1231 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1233 dev
->mode_config
.tv_flicker_reduction_property
=
1234 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1236 dev
->mode_config
.tv_overscan_property
=
1237 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1239 dev
->mode_config
.tv_saturation_property
=
1240 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1242 dev
->mode_config
.tv_hue_property
=
1243 drm_property_create_range(dev
, 0, "hue", 0, 100);
1247 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1250 * drm_mode_create_scaling_mode_property - create scaling mode property
1253 * Called by a driver the first time it's needed, must be attached to desired
1256 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1258 struct drm_property
*scaling_mode
;
1260 if (dev
->mode_config
.scaling_mode_property
)
1264 drm_property_create_enum(dev
, 0, "scaling mode",
1265 drm_scaling_mode_enum_list
,
1266 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1268 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1272 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1275 * drm_mode_create_dirty_property - create dirty property
1278 * Called by a driver the first time it's needed, must be attached to desired
1281 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1283 struct drm_property
*dirty_info
;
1285 if (dev
->mode_config
.dirty_info_property
)
1289 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1291 drm_dirty_info_enum_list
,
1292 ARRAY_SIZE(drm_dirty_info_enum_list
));
1293 dev
->mode_config
.dirty_info_property
= dirty_info
;
1297 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1299 static int drm_mode_group_init(struct drm_device
*dev
, struct drm_mode_group
*group
)
1301 uint32_t total_objects
= 0;
1303 total_objects
+= dev
->mode_config
.num_crtc
;
1304 total_objects
+= dev
->mode_config
.num_connector
;
1305 total_objects
+= dev
->mode_config
.num_encoder
;
1306 total_objects
+= dev
->mode_config
.num_bridge
;
1308 group
->id_list
= kzalloc(total_objects
* sizeof(uint32_t), GFP_KERNEL
);
1309 if (!group
->id_list
)
1312 group
->num_crtcs
= 0;
1313 group
->num_connectors
= 0;
1314 group
->num_encoders
= 0;
1315 group
->num_bridges
= 0;
1320 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1321 * the drm core's responsibility to set up mode control groups.
1323 int drm_mode_group_init_legacy_group(struct drm_device
*dev
,
1324 struct drm_mode_group
*group
)
1326 struct drm_crtc
*crtc
;
1327 struct drm_encoder
*encoder
;
1328 struct drm_connector
*connector
;
1329 struct drm_bridge
*bridge
;
1332 if ((ret
= drm_mode_group_init(dev
, group
)))
1335 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
1336 group
->id_list
[group
->num_crtcs
++] = crtc
->base
.id
;
1338 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
1339 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
++] =
1342 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1343 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1344 group
->num_connectors
++] = connector
->base
.id
;
1346 list_for_each_entry(bridge
, &dev
->mode_config
.bridge_list
, head
)
1347 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1348 group
->num_connectors
+ group
->num_bridges
++] =
1353 EXPORT_SYMBOL(drm_mode_group_init_legacy_group
);
1356 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1357 * @out: drm_mode_modeinfo struct to return to the user
1358 * @in: drm_display_mode to use
1360 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1363 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo
*out
,
1364 const struct drm_display_mode
*in
)
1366 WARN(in
->hdisplay
> USHRT_MAX
|| in
->hsync_start
> USHRT_MAX
||
1367 in
->hsync_end
> USHRT_MAX
|| in
->htotal
> USHRT_MAX
||
1368 in
->hskew
> USHRT_MAX
|| in
->vdisplay
> USHRT_MAX
||
1369 in
->vsync_start
> USHRT_MAX
|| in
->vsync_end
> USHRT_MAX
||
1370 in
->vtotal
> USHRT_MAX
|| in
->vscan
> USHRT_MAX
,
1371 "timing values too large for mode info\n");
1373 out
->clock
= in
->clock
;
1374 out
->hdisplay
= in
->hdisplay
;
1375 out
->hsync_start
= in
->hsync_start
;
1376 out
->hsync_end
= in
->hsync_end
;
1377 out
->htotal
= in
->htotal
;
1378 out
->hskew
= in
->hskew
;
1379 out
->vdisplay
= in
->vdisplay
;
1380 out
->vsync_start
= in
->vsync_start
;
1381 out
->vsync_end
= in
->vsync_end
;
1382 out
->vtotal
= in
->vtotal
;
1383 out
->vscan
= in
->vscan
;
1384 out
->vrefresh
= in
->vrefresh
;
1385 out
->flags
= in
->flags
;
1386 out
->type
= in
->type
;
1387 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1388 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1392 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1393 * @out: drm_display_mode to return to the user
1394 * @in: drm_mode_modeinfo to use
1396 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1400 * Zero on success, errno on failure.
1402 static int drm_crtc_convert_umode(struct drm_display_mode
*out
,
1403 const struct drm_mode_modeinfo
*in
)
1405 if (in
->clock
> INT_MAX
|| in
->vrefresh
> INT_MAX
)
1408 if ((in
->flags
& DRM_MODE_FLAG_3D_MASK
) > DRM_MODE_FLAG_3D_MAX
)
1411 out
->clock
= in
->clock
;
1412 out
->hdisplay
= in
->hdisplay
;
1413 out
->hsync_start
= in
->hsync_start
;
1414 out
->hsync_end
= in
->hsync_end
;
1415 out
->htotal
= in
->htotal
;
1416 out
->hskew
= in
->hskew
;
1417 out
->vdisplay
= in
->vdisplay
;
1418 out
->vsync_start
= in
->vsync_start
;
1419 out
->vsync_end
= in
->vsync_end
;
1420 out
->vtotal
= in
->vtotal
;
1421 out
->vscan
= in
->vscan
;
1422 out
->vrefresh
= in
->vrefresh
;
1423 out
->flags
= in
->flags
;
1424 out
->type
= in
->type
;
1425 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1426 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1432 * drm_mode_getresources - get graphics configuration
1433 * @dev: drm device for the ioctl
1434 * @data: data pointer for the ioctl
1435 * @file_priv: drm file for the ioctl call
1437 * Construct a set of configuration description structures and return
1438 * them to the user, including CRTC, connector and framebuffer configuration.
1440 * Called by the user via ioctl.
1443 * Zero on success, errno on failure.
1445 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1446 struct drm_file
*file_priv
)
1448 struct drm_mode_card_res
*card_res
= data
;
1449 struct list_head
*lh
;
1450 struct drm_framebuffer
*fb
;
1451 struct drm_connector
*connector
;
1452 struct drm_crtc
*crtc
;
1453 struct drm_encoder
*encoder
;
1455 int connector_count
= 0;
1458 int encoder_count
= 0;
1460 uint32_t __user
*fb_id
;
1461 uint32_t __user
*crtc_id
;
1462 uint32_t __user
*connector_id
;
1463 uint32_t __user
*encoder_id
;
1464 struct drm_mode_group
*mode_group
;
1466 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1470 mutex_lock(&file_priv
->fbs_lock
);
1472 * For the non-control nodes we need to limit the list of resources
1473 * by IDs in the group list for this node
1475 list_for_each(lh
, &file_priv
->fbs
)
1478 /* handle this in 4 parts */
1480 if (card_res
->count_fbs
>= fb_count
) {
1482 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1483 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1484 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1485 mutex_unlock(&file_priv
->fbs_lock
);
1491 card_res
->count_fbs
= fb_count
;
1492 mutex_unlock(&file_priv
->fbs_lock
);
1494 drm_modeset_lock_all(dev
);
1495 if (!drm_is_primary_client(file_priv
)) {
1498 list_for_each(lh
, &dev
->mode_config
.crtc_list
)
1501 list_for_each(lh
, &dev
->mode_config
.connector_list
)
1504 list_for_each(lh
, &dev
->mode_config
.encoder_list
)
1508 mode_group
= &file_priv
->master
->minor
->mode_group
;
1509 crtc_count
= mode_group
->num_crtcs
;
1510 connector_count
= mode_group
->num_connectors
;
1511 encoder_count
= mode_group
->num_encoders
;
1514 card_res
->max_height
= dev
->mode_config
.max_height
;
1515 card_res
->min_height
= dev
->mode_config
.min_height
;
1516 card_res
->max_width
= dev
->mode_config
.max_width
;
1517 card_res
->min_width
= dev
->mode_config
.min_width
;
1520 if (card_res
->count_crtcs
>= crtc_count
) {
1522 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1524 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
,
1526 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1527 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1534 for (i
= 0; i
< mode_group
->num_crtcs
; i
++) {
1535 if (put_user(mode_group
->id_list
[i
],
1536 crtc_id
+ copied
)) {
1544 card_res
->count_crtcs
= crtc_count
;
1547 if (card_res
->count_encoders
>= encoder_count
) {
1549 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1551 list_for_each_entry(encoder
,
1552 &dev
->mode_config
.encoder_list
,
1554 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1555 drm_get_encoder_name(encoder
));
1556 if (put_user(encoder
->base
.id
, encoder_id
+
1564 for (i
= mode_group
->num_crtcs
; i
< mode_group
->num_crtcs
+ mode_group
->num_encoders
; i
++) {
1565 if (put_user(mode_group
->id_list
[i
],
1566 encoder_id
+ copied
)) {
1575 card_res
->count_encoders
= encoder_count
;
1578 if (card_res
->count_connectors
>= connector_count
) {
1580 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1582 list_for_each_entry(connector
,
1583 &dev
->mode_config
.connector_list
,
1585 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1587 drm_get_connector_name(connector
));
1588 if (put_user(connector
->base
.id
,
1589 connector_id
+ copied
)) {
1596 int start
= mode_group
->num_crtcs
+
1597 mode_group
->num_encoders
;
1598 for (i
= start
; i
< start
+ mode_group
->num_connectors
; i
++) {
1599 if (put_user(mode_group
->id_list
[i
],
1600 connector_id
+ copied
)) {
1608 card_res
->count_connectors
= connector_count
;
1610 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1611 card_res
->count_connectors
, card_res
->count_encoders
);
1614 drm_modeset_unlock_all(dev
);
1619 * drm_mode_getcrtc - get CRTC configuration
1620 * @dev: drm device for the ioctl
1621 * @data: data pointer for the ioctl
1622 * @file_priv: drm file for the ioctl call
1624 * Construct a CRTC configuration structure to return to the user.
1626 * Called by the user via ioctl.
1629 * Zero on success, errno on failure.
1631 int drm_mode_getcrtc(struct drm_device
*dev
,
1632 void *data
, struct drm_file
*file_priv
)
1634 struct drm_mode_crtc
*crtc_resp
= data
;
1635 struct drm_crtc
*crtc
;
1636 struct drm_mode_object
*obj
;
1639 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1642 drm_modeset_lock_all(dev
);
1644 obj
= drm_mode_object_find(dev
, crtc_resp
->crtc_id
,
1645 DRM_MODE_OBJECT_CRTC
);
1650 crtc
= obj_to_crtc(obj
);
1652 crtc_resp
->x
= crtc
->x
;
1653 crtc_resp
->y
= crtc
->y
;
1654 crtc_resp
->gamma_size
= crtc
->gamma_size
;
1656 crtc_resp
->fb_id
= crtc
->fb
->base
.id
;
1658 crtc_resp
->fb_id
= 0;
1660 if (crtc
->enabled
) {
1662 drm_crtc_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
1663 crtc_resp
->mode_valid
= 1;
1666 crtc_resp
->mode_valid
= 0;
1670 drm_modeset_unlock_all(dev
);
1674 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1675 const struct drm_file
*file_priv
)
1678 * If user-space hasn't configured the driver to expose the stereo 3D
1679 * modes, don't expose them.
1681 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
1688 * drm_mode_getconnector - get connector configuration
1689 * @dev: drm device for the ioctl
1690 * @data: data pointer for the ioctl
1691 * @file_priv: drm file for the ioctl call
1693 * Construct a connector configuration structure to return to the user.
1695 * Called by the user via ioctl.
1698 * Zero on success, errno on failure.
1700 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
1701 struct drm_file
*file_priv
)
1703 struct drm_mode_get_connector
*out_resp
= data
;
1704 struct drm_mode_object
*obj
;
1705 struct drm_connector
*connector
;
1706 struct drm_display_mode
*mode
;
1708 int props_count
= 0;
1709 int encoders_count
= 0;
1713 struct drm_mode_modeinfo u_mode
;
1714 struct drm_mode_modeinfo __user
*mode_ptr
;
1715 uint32_t __user
*prop_ptr
;
1716 uint64_t __user
*prop_values
;
1717 uint32_t __user
*encoder_ptr
;
1719 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1722 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
1724 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
1726 mutex_lock(&dev
->mode_config
.mutex
);
1728 obj
= drm_mode_object_find(dev
, out_resp
->connector_id
,
1729 DRM_MODE_OBJECT_CONNECTOR
);
1734 connector
= obj_to_connector(obj
);
1736 props_count
= connector
->properties
.count
;
1738 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
1739 if (connector
->encoder_ids
[i
] != 0) {
1744 if (out_resp
->count_modes
== 0) {
1745 connector
->funcs
->fill_modes(connector
,
1746 dev
->mode_config
.max_width
,
1747 dev
->mode_config
.max_height
);
1750 /* delayed so we get modes regardless of pre-fill_modes state */
1751 list_for_each_entry(mode
, &connector
->modes
, head
)
1752 if (drm_mode_expose_to_userspace(mode
, file_priv
))
1755 out_resp
->connector_id
= connector
->base
.id
;
1756 out_resp
->connector_type
= connector
->connector_type
;
1757 out_resp
->connector_type_id
= connector
->connector_type_id
;
1758 out_resp
->mm_width
= connector
->display_info
.width_mm
;
1759 out_resp
->mm_height
= connector
->display_info
.height_mm
;
1760 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
1761 out_resp
->connection
= connector
->status
;
1762 if (connector
->encoder
)
1763 out_resp
->encoder_id
= connector
->encoder
->base
.id
;
1765 out_resp
->encoder_id
= 0;
1768 * This ioctl is called twice, once to determine how much space is
1769 * needed, and the 2nd time to fill it.
1771 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
1773 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
1774 list_for_each_entry(mode
, &connector
->modes
, head
) {
1775 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
1778 drm_crtc_convert_to_umode(&u_mode
, mode
);
1779 if (copy_to_user(mode_ptr
+ copied
,
1780 &u_mode
, sizeof(u_mode
))) {
1787 out_resp
->count_modes
= mode_count
;
1789 if ((out_resp
->count_props
>= props_count
) && props_count
) {
1791 prop_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
);
1792 prop_values
= (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
);
1793 for (i
= 0; i
< connector
->properties
.count
; i
++) {
1794 if (put_user(connector
->properties
.ids
[i
],
1795 prop_ptr
+ copied
)) {
1800 if (put_user(connector
->properties
.values
[i
],
1801 prop_values
+ copied
)) {
1808 out_resp
->count_props
= props_count
;
1810 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
1812 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
1813 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
1814 if (connector
->encoder_ids
[i
] != 0) {
1815 if (put_user(connector
->encoder_ids
[i
],
1816 encoder_ptr
+ copied
)) {
1824 out_resp
->count_encoders
= encoders_count
;
1827 mutex_unlock(&dev
->mode_config
.mutex
);
1833 * drm_mode_getencoder - get encoder configuration
1834 * @dev: drm device for the ioctl
1835 * @data: data pointer for the ioctl
1836 * @file_priv: drm file for the ioctl call
1838 * Construct a encoder configuration structure to return to the user.
1840 * Called by the user via ioctl.
1843 * Zero on success, errno on failure.
1845 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
1846 struct drm_file
*file_priv
)
1848 struct drm_mode_get_encoder
*enc_resp
= data
;
1849 struct drm_mode_object
*obj
;
1850 struct drm_encoder
*encoder
;
1853 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1856 drm_modeset_lock_all(dev
);
1857 obj
= drm_mode_object_find(dev
, enc_resp
->encoder_id
,
1858 DRM_MODE_OBJECT_ENCODER
);
1863 encoder
= obj_to_encoder(obj
);
1866 enc_resp
->crtc_id
= encoder
->crtc
->base
.id
;
1868 enc_resp
->crtc_id
= 0;
1869 enc_resp
->encoder_type
= encoder
->encoder_type
;
1870 enc_resp
->encoder_id
= encoder
->base
.id
;
1871 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
1872 enc_resp
->possible_clones
= encoder
->possible_clones
;
1875 drm_modeset_unlock_all(dev
);
1880 * drm_mode_getplane_res - enumerate all plane resources
1883 * @file_priv: DRM file info
1885 * Construct a list of plane ids to return to the user.
1887 * Called by the user via ioctl.
1890 * Zero on success, errno on failure.
1892 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
1893 struct drm_file
*file_priv
)
1895 struct drm_mode_get_plane_res
*plane_resp
= data
;
1896 struct drm_mode_config
*config
;
1897 struct drm_plane
*plane
;
1898 uint32_t __user
*plane_ptr
;
1899 int copied
= 0, ret
= 0;
1901 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1904 drm_modeset_lock_all(dev
);
1905 config
= &dev
->mode_config
;
1908 * This ioctl is called twice, once to determine how much space is
1909 * needed, and the 2nd time to fill it.
1911 if (config
->num_plane
&&
1912 (plane_resp
->count_planes
>= config
->num_plane
)) {
1913 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
1915 list_for_each_entry(plane
, &config
->plane_list
, head
) {
1916 if (put_user(plane
->base
.id
, plane_ptr
+ copied
)) {
1923 plane_resp
->count_planes
= config
->num_plane
;
1926 drm_modeset_unlock_all(dev
);
1931 * drm_mode_getplane - get plane configuration
1934 * @file_priv: DRM file info
1936 * Construct a plane configuration structure to return to the user.
1938 * Called by the user via ioctl.
1941 * Zero on success, errno on failure.
1943 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
1944 struct drm_file
*file_priv
)
1946 struct drm_mode_get_plane
*plane_resp
= data
;
1947 struct drm_mode_object
*obj
;
1948 struct drm_plane
*plane
;
1949 uint32_t __user
*format_ptr
;
1952 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1955 drm_modeset_lock_all(dev
);
1956 obj
= drm_mode_object_find(dev
, plane_resp
->plane_id
,
1957 DRM_MODE_OBJECT_PLANE
);
1962 plane
= obj_to_plane(obj
);
1965 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
1967 plane_resp
->crtc_id
= 0;
1970 plane_resp
->fb_id
= plane
->fb
->base
.id
;
1972 plane_resp
->fb_id
= 0;
1974 plane_resp
->plane_id
= plane
->base
.id
;
1975 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
1976 plane_resp
->gamma_size
= 0;
1979 * This ioctl is called twice, once to determine how much space is
1980 * needed, and the 2nd time to fill it.
1982 if (plane
->format_count
&&
1983 (plane_resp
->count_format_types
>= plane
->format_count
)) {
1984 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
1985 if (copy_to_user(format_ptr
,
1986 plane
->format_types
,
1987 sizeof(uint32_t) * plane
->format_count
)) {
1992 plane_resp
->count_format_types
= plane
->format_count
;
1995 drm_modeset_unlock_all(dev
);
2000 * drm_mode_setplane - configure a plane's configuration
2002 * @data: ioctl data*
2003 * @file_priv: DRM file info
2005 * Set plane configuration, including placement, fb, scaling, and other factors.
2006 * Or pass a NULL fb to disable.
2009 * Zero on success, errno on failure.
2011 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2012 struct drm_file
*file_priv
)
2014 struct drm_mode_set_plane
*plane_req
= data
;
2015 struct drm_mode_object
*obj
;
2016 struct drm_plane
*plane
;
2017 struct drm_crtc
*crtc
;
2018 struct drm_framebuffer
*fb
= NULL
, *old_fb
= NULL
;
2020 unsigned int fb_width
, fb_height
;
2023 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2027 * First, find the plane, crtc, and fb objects. If not available,
2028 * we don't bother to call the driver.
2030 obj
= drm_mode_object_find(dev
, plane_req
->plane_id
,
2031 DRM_MODE_OBJECT_PLANE
);
2033 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2034 plane_req
->plane_id
);
2037 plane
= obj_to_plane(obj
);
2039 /* No fb means shut it down */
2040 if (!plane_req
->fb_id
) {
2041 drm_modeset_lock_all(dev
);
2043 plane
->funcs
->disable_plane(plane
);
2046 drm_modeset_unlock_all(dev
);
2050 obj
= drm_mode_object_find(dev
, plane_req
->crtc_id
,
2051 DRM_MODE_OBJECT_CRTC
);
2053 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2054 plane_req
->crtc_id
);
2058 crtc
= obj_to_crtc(obj
);
2060 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2062 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2068 /* Check whether this plane supports the fb pixel format. */
2069 for (i
= 0; i
< plane
->format_count
; i
++)
2070 if (fb
->pixel_format
== plane
->format_types
[i
])
2072 if (i
== plane
->format_count
) {
2073 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2074 drm_get_format_name(fb
->pixel_format
));
2079 fb_width
= fb
->width
<< 16;
2080 fb_height
= fb
->height
<< 16;
2082 /* Make sure source coordinates are inside the fb. */
2083 if (plane_req
->src_w
> fb_width
||
2084 plane_req
->src_x
> fb_width
- plane_req
->src_w
||
2085 plane_req
->src_h
> fb_height
||
2086 plane_req
->src_y
> fb_height
- plane_req
->src_h
) {
2087 DRM_DEBUG_KMS("Invalid source coordinates "
2088 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2089 plane_req
->src_w
>> 16,
2090 ((plane_req
->src_w
& 0xffff) * 15625) >> 10,
2091 plane_req
->src_h
>> 16,
2092 ((plane_req
->src_h
& 0xffff) * 15625) >> 10,
2093 plane_req
->src_x
>> 16,
2094 ((plane_req
->src_x
& 0xffff) * 15625) >> 10,
2095 plane_req
->src_y
>> 16,
2096 ((plane_req
->src_y
& 0xffff) * 15625) >> 10);
2101 /* Give drivers some help against integer overflows */
2102 if (plane_req
->crtc_w
> INT_MAX
||
2103 plane_req
->crtc_x
> INT_MAX
- (int32_t) plane_req
->crtc_w
||
2104 plane_req
->crtc_h
> INT_MAX
||
2105 plane_req
->crtc_y
> INT_MAX
- (int32_t) plane_req
->crtc_h
) {
2106 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2107 plane_req
->crtc_w
, plane_req
->crtc_h
,
2108 plane_req
->crtc_x
, plane_req
->crtc_y
);
2113 drm_modeset_lock_all(dev
);
2114 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2115 plane_req
->crtc_x
, plane_req
->crtc_y
,
2116 plane_req
->crtc_w
, plane_req
->crtc_h
,
2117 plane_req
->src_x
, plane_req
->src_y
,
2118 plane_req
->src_w
, plane_req
->src_h
);
2125 drm_modeset_unlock_all(dev
);
2129 drm_framebuffer_unreference(fb
);
2131 drm_framebuffer_unreference(old_fb
);
2137 * drm_mode_set_config_internal - helper to call ->set_config
2138 * @set: modeset config to set
2140 * This is a little helper to wrap internal calls to the ->set_config driver
2141 * interface. The only thing it adds is correct refcounting dance.
2144 * Zero on success, errno on failure.
2146 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2148 struct drm_crtc
*crtc
= set
->crtc
;
2149 struct drm_framebuffer
*fb
;
2150 struct drm_crtc
*tmp
;
2154 * NOTE: ->set_config can also disable other crtcs (if we steal all
2155 * connectors from it), hence we need to refcount the fbs across all
2156 * crtcs. Atomic modeset will have saner semantics ...
2158 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
)
2159 tmp
->old_fb
= tmp
->fb
;
2163 ret
= crtc
->funcs
->set_config(set
);
2165 /* crtc->fb must be updated by ->set_config, enforces this. */
2166 WARN_ON(fb
!= crtc
->fb
);
2169 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
2171 drm_framebuffer_reference(tmp
->fb
);
2173 drm_framebuffer_unreference(tmp
->old_fb
);
2178 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2181 * Checks that the framebuffer is big enough for the CRTC viewport
2182 * (x, y, hdisplay, vdisplay)
2184 static int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2186 const struct drm_display_mode
*mode
,
2187 const struct drm_framebuffer
*fb
)
2190 int hdisplay
, vdisplay
;
2192 hdisplay
= mode
->hdisplay
;
2193 vdisplay
= mode
->vdisplay
;
2195 if (drm_mode_is_stereo(mode
)) {
2196 struct drm_display_mode adjusted
= *mode
;
2198 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE
);
2199 hdisplay
= adjusted
.crtc_hdisplay
;
2200 vdisplay
= adjusted
.crtc_vdisplay
;
2203 if (crtc
->invert_dimensions
)
2204 swap(hdisplay
, vdisplay
);
2206 if (hdisplay
> fb
->width
||
2207 vdisplay
> fb
->height
||
2208 x
> fb
->width
- hdisplay
||
2209 y
> fb
->height
- vdisplay
) {
2210 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2211 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2212 crtc
->invert_dimensions
? " (inverted)" : "");
2220 * drm_mode_setcrtc - set CRTC configuration
2221 * @dev: drm device for the ioctl
2222 * @data: data pointer for the ioctl
2223 * @file_priv: drm file for the ioctl call
2225 * Build a new CRTC configuration based on user request.
2227 * Called by the user via ioctl.
2230 * Zero on success, errno on failure.
2232 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2233 struct drm_file
*file_priv
)
2235 struct drm_mode_config
*config
= &dev
->mode_config
;
2236 struct drm_mode_crtc
*crtc_req
= data
;
2237 struct drm_mode_object
*obj
;
2238 struct drm_crtc
*crtc
;
2239 struct drm_connector
**connector_set
= NULL
, *connector
;
2240 struct drm_framebuffer
*fb
= NULL
;
2241 struct drm_display_mode
*mode
= NULL
;
2242 struct drm_mode_set set
;
2243 uint32_t __user
*set_connectors_ptr
;
2247 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2250 /* For some reason crtc x/y offsets are signed internally. */
2251 if (crtc_req
->x
> INT_MAX
|| crtc_req
->y
> INT_MAX
)
2254 drm_modeset_lock_all(dev
);
2255 obj
= drm_mode_object_find(dev
, crtc_req
->crtc_id
,
2256 DRM_MODE_OBJECT_CRTC
);
2258 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2262 crtc
= obj_to_crtc(obj
);
2263 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2265 if (crtc_req
->mode_valid
) {
2266 /* If we have a mode we need a framebuffer. */
2267 /* If we pass -1, set the mode with the currently bound fb */
2268 if (crtc_req
->fb_id
== -1) {
2270 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2275 /* Make refcounting symmetric with the lookup path. */
2276 drm_framebuffer_reference(fb
);
2278 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2280 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2287 mode
= drm_mode_create(dev
);
2293 ret
= drm_crtc_convert_umode(mode
, &crtc_req
->mode
);
2295 DRM_DEBUG_KMS("Invalid mode\n");
2299 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2301 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2308 if (crtc_req
->count_connectors
== 0 && mode
) {
2309 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2314 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2315 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2316 crtc_req
->count_connectors
);
2321 if (crtc_req
->count_connectors
> 0) {
2324 /* Avoid unbounded kernel memory allocation */
2325 if (crtc_req
->count_connectors
> config
->num_connector
) {
2330 connector_set
= kmalloc(crtc_req
->count_connectors
*
2331 sizeof(struct drm_connector
*),
2333 if (!connector_set
) {
2338 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2339 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2340 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2345 obj
= drm_mode_object_find(dev
, out_id
,
2346 DRM_MODE_OBJECT_CONNECTOR
);
2348 DRM_DEBUG_KMS("Connector id %d unknown\n",
2353 connector
= obj_to_connector(obj
);
2354 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2356 drm_get_connector_name(connector
));
2358 connector_set
[i
] = connector
;
2363 set
.x
= crtc_req
->x
;
2364 set
.y
= crtc_req
->y
;
2366 set
.connectors
= connector_set
;
2367 set
.num_connectors
= crtc_req
->count_connectors
;
2369 ret
= drm_mode_set_config_internal(&set
);
2373 drm_framebuffer_unreference(fb
);
2375 kfree(connector_set
);
2376 drm_mode_destroy(dev
, mode
);
2377 drm_modeset_unlock_all(dev
);
2381 static int drm_mode_cursor_common(struct drm_device
*dev
,
2382 struct drm_mode_cursor2
*req
,
2383 struct drm_file
*file_priv
)
2385 struct drm_mode_object
*obj
;
2386 struct drm_crtc
*crtc
;
2389 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2392 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2395 obj
= drm_mode_object_find(dev
, req
->crtc_id
, DRM_MODE_OBJECT_CRTC
);
2397 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2400 crtc
= obj_to_crtc(obj
);
2402 mutex_lock(&crtc
->mutex
);
2403 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2404 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2408 /* Turns off the cursor if handle is 0 */
2409 if (crtc
->funcs
->cursor_set2
)
2410 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2411 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2413 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2414 req
->width
, req
->height
);
2417 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2418 if (crtc
->funcs
->cursor_move
) {
2419 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
2426 mutex_unlock(&crtc
->mutex
);
2434 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2435 * @dev: drm device for the ioctl
2436 * @data: data pointer for the ioctl
2437 * @file_priv: drm file for the ioctl call
2439 * Set the cursor configuration based on user request.
2441 * Called by the user via ioctl.
2444 * Zero on success, errno on failure.
2446 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
2447 void *data
, struct drm_file
*file_priv
)
2449 struct drm_mode_cursor
*req
= data
;
2450 struct drm_mode_cursor2 new_req
;
2452 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
2453 new_req
.hot_x
= new_req
.hot_y
= 0;
2455 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
2459 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2460 * @dev: drm device for the ioctl
2461 * @data: data pointer for the ioctl
2462 * @file_priv: drm file for the ioctl call
2464 * Set the cursor configuration based on user request. This implements the 2nd
2465 * version of the cursor ioctl, which allows userspace to additionally specify
2466 * the hotspot of the pointer.
2468 * Called by the user via ioctl.
2471 * Zero on success, errno on failure.
2473 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
2474 void *data
, struct drm_file
*file_priv
)
2476 struct drm_mode_cursor2
*req
= data
;
2477 return drm_mode_cursor_common(dev
, req
, file_priv
);
2481 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2482 * @bpp: bits per pixels
2483 * @depth: bit depth per pixel
2485 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2486 * Useful in fbdev emulation code, since that deals in those values.
2488 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
2494 fmt
= DRM_FORMAT_C8
;
2498 fmt
= DRM_FORMAT_XRGB1555
;
2500 fmt
= DRM_FORMAT_RGB565
;
2503 fmt
= DRM_FORMAT_RGB888
;
2507 fmt
= DRM_FORMAT_XRGB8888
;
2508 else if (depth
== 30)
2509 fmt
= DRM_FORMAT_XRGB2101010
;
2511 fmt
= DRM_FORMAT_ARGB8888
;
2514 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2515 fmt
= DRM_FORMAT_XRGB8888
;
2521 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
2524 * drm_mode_addfb - add an FB to the graphics configuration
2525 * @dev: drm device for the ioctl
2526 * @data: data pointer for the ioctl
2527 * @file_priv: drm file for the ioctl call
2529 * Add a new FB to the specified CRTC, given a user request. This is the
2530 * original addfb ioclt which only supported RGB formats.
2532 * Called by the user via ioctl.
2535 * Zero on success, errno on failure.
2537 int drm_mode_addfb(struct drm_device
*dev
,
2538 void *data
, struct drm_file
*file_priv
)
2540 struct drm_mode_fb_cmd
*or = data
;
2541 struct drm_mode_fb_cmd2 r
= {};
2542 struct drm_mode_config
*config
= &dev
->mode_config
;
2543 struct drm_framebuffer
*fb
;
2546 /* Use new struct with format internally */
2547 r
.fb_id
= or->fb_id
;
2548 r
.width
= or->width
;
2549 r
.height
= or->height
;
2550 r
.pitches
[0] = or->pitch
;
2551 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
2552 r
.handles
[0] = or->handle
;
2554 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2557 if ((config
->min_width
> r
.width
) || (r
.width
> config
->max_width
))
2560 if ((config
->min_height
> r
.height
) || (r
.height
> config
->max_height
))
2563 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, &r
);
2565 DRM_DEBUG_KMS("could not create framebuffer\n");
2569 mutex_lock(&file_priv
->fbs_lock
);
2570 or->fb_id
= fb
->base
.id
;
2571 list_add(&fb
->filp_head
, &file_priv
->fbs
);
2572 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
2573 mutex_unlock(&file_priv
->fbs_lock
);
2578 static int format_check(const struct drm_mode_fb_cmd2
*r
)
2580 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
2584 case DRM_FORMAT_RGB332
:
2585 case DRM_FORMAT_BGR233
:
2586 case DRM_FORMAT_XRGB4444
:
2587 case DRM_FORMAT_XBGR4444
:
2588 case DRM_FORMAT_RGBX4444
:
2589 case DRM_FORMAT_BGRX4444
:
2590 case DRM_FORMAT_ARGB4444
:
2591 case DRM_FORMAT_ABGR4444
:
2592 case DRM_FORMAT_RGBA4444
:
2593 case DRM_FORMAT_BGRA4444
:
2594 case DRM_FORMAT_XRGB1555
:
2595 case DRM_FORMAT_XBGR1555
:
2596 case DRM_FORMAT_RGBX5551
:
2597 case DRM_FORMAT_BGRX5551
:
2598 case DRM_FORMAT_ARGB1555
:
2599 case DRM_FORMAT_ABGR1555
:
2600 case DRM_FORMAT_RGBA5551
:
2601 case DRM_FORMAT_BGRA5551
:
2602 case DRM_FORMAT_RGB565
:
2603 case DRM_FORMAT_BGR565
:
2604 case DRM_FORMAT_RGB888
:
2605 case DRM_FORMAT_BGR888
:
2606 case DRM_FORMAT_XRGB8888
:
2607 case DRM_FORMAT_XBGR8888
:
2608 case DRM_FORMAT_RGBX8888
:
2609 case DRM_FORMAT_BGRX8888
:
2610 case DRM_FORMAT_ARGB8888
:
2611 case DRM_FORMAT_ABGR8888
:
2612 case DRM_FORMAT_RGBA8888
:
2613 case DRM_FORMAT_BGRA8888
:
2614 case DRM_FORMAT_XRGB2101010
:
2615 case DRM_FORMAT_XBGR2101010
:
2616 case DRM_FORMAT_RGBX1010102
:
2617 case DRM_FORMAT_BGRX1010102
:
2618 case DRM_FORMAT_ARGB2101010
:
2619 case DRM_FORMAT_ABGR2101010
:
2620 case DRM_FORMAT_RGBA1010102
:
2621 case DRM_FORMAT_BGRA1010102
:
2622 case DRM_FORMAT_YUYV
:
2623 case DRM_FORMAT_YVYU
:
2624 case DRM_FORMAT_UYVY
:
2625 case DRM_FORMAT_VYUY
:
2626 case DRM_FORMAT_AYUV
:
2627 case DRM_FORMAT_NV12
:
2628 case DRM_FORMAT_NV21
:
2629 case DRM_FORMAT_NV16
:
2630 case DRM_FORMAT_NV61
:
2631 case DRM_FORMAT_NV24
:
2632 case DRM_FORMAT_NV42
:
2633 case DRM_FORMAT_YUV410
:
2634 case DRM_FORMAT_YVU410
:
2635 case DRM_FORMAT_YUV411
:
2636 case DRM_FORMAT_YVU411
:
2637 case DRM_FORMAT_YUV420
:
2638 case DRM_FORMAT_YVU420
:
2639 case DRM_FORMAT_YUV422
:
2640 case DRM_FORMAT_YVU422
:
2641 case DRM_FORMAT_YUV444
:
2642 case DRM_FORMAT_YVU444
:
2645 DRM_DEBUG_KMS("invalid pixel format %s\n",
2646 drm_get_format_name(r
->pixel_format
));
2651 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
2653 int ret
, hsub
, vsub
, num_planes
, i
;
2655 ret
= format_check(r
);
2657 DRM_DEBUG_KMS("bad framebuffer format %s\n",
2658 drm_get_format_name(r
->pixel_format
));
2662 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
2663 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
2664 num_planes
= drm_format_num_planes(r
->pixel_format
);
2666 if (r
->width
== 0 || r
->width
% hsub
) {
2667 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->height
);
2671 if (r
->height
== 0 || r
->height
% vsub
) {
2672 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
2676 for (i
= 0; i
< num_planes
; i
++) {
2677 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
2678 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
2679 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
2681 if (!r
->handles
[i
]) {
2682 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
2686 if ((uint64_t) width
* cpp
> UINT_MAX
)
2689 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
2692 if (r
->pitches
[i
] < width
* cpp
) {
2693 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
2702 * drm_mode_addfb2 - add an FB to the graphics configuration
2703 * @dev: drm device for the ioctl
2704 * @data: data pointer for the ioctl
2705 * @file_priv: drm file for the ioctl call
2707 * Add a new FB to the specified CRTC, given a user request with format. This is
2708 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
2709 * and uses fourcc codes as pixel format specifiers.
2711 * Called by the user via ioctl.
2714 * Zero on success, errno on failure.
2716 int drm_mode_addfb2(struct drm_device
*dev
,
2717 void *data
, struct drm_file
*file_priv
)
2719 struct drm_mode_fb_cmd2
*r
= data
;
2720 struct drm_mode_config
*config
= &dev
->mode_config
;
2721 struct drm_framebuffer
*fb
;
2724 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2727 if (r
->flags
& ~DRM_MODE_FB_INTERLACED
) {
2728 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
2732 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
2733 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
2734 r
->width
, config
->min_width
, config
->max_width
);
2737 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
2738 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
2739 r
->height
, config
->min_height
, config
->max_height
);
2743 ret
= framebuffer_check(r
);
2747 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
2749 DRM_DEBUG_KMS("could not create framebuffer\n");
2753 mutex_lock(&file_priv
->fbs_lock
);
2754 r
->fb_id
= fb
->base
.id
;
2755 list_add(&fb
->filp_head
, &file_priv
->fbs
);
2756 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
2757 mutex_unlock(&file_priv
->fbs_lock
);
2764 * drm_mode_rmfb - remove an FB from the configuration
2765 * @dev: drm device for the ioctl
2766 * @data: data pointer for the ioctl
2767 * @file_priv: drm file for the ioctl call
2769 * Remove the FB specified by the user.
2771 * Called by the user via ioctl.
2774 * Zero on success, errno on failure.
2776 int drm_mode_rmfb(struct drm_device
*dev
,
2777 void *data
, struct drm_file
*file_priv
)
2779 struct drm_framebuffer
*fb
= NULL
;
2780 struct drm_framebuffer
*fbl
= NULL
;
2781 uint32_t *id
= data
;
2784 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2787 mutex_lock(&file_priv
->fbs_lock
);
2788 mutex_lock(&dev
->mode_config
.fb_lock
);
2789 fb
= __drm_framebuffer_lookup(dev
, *id
);
2793 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
2799 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2800 __drm_framebuffer_unregister(dev
, fb
);
2802 list_del_init(&fb
->filp_head
);
2803 mutex_unlock(&dev
->mode_config
.fb_lock
);
2804 mutex_unlock(&file_priv
->fbs_lock
);
2806 drm_framebuffer_remove(fb
);
2811 mutex_unlock(&dev
->mode_config
.fb_lock
);
2812 mutex_unlock(&file_priv
->fbs_lock
);
2818 * drm_mode_getfb - get FB info
2819 * @dev: drm device for the ioctl
2820 * @data: data pointer for the ioctl
2821 * @file_priv: drm file for the ioctl call
2823 * Lookup the FB given its ID and return info about it.
2825 * Called by the user via ioctl.
2828 * Zero on success, errno on failure.
2830 int drm_mode_getfb(struct drm_device
*dev
,
2831 void *data
, struct drm_file
*file_priv
)
2833 struct drm_mode_fb_cmd
*r
= data
;
2834 struct drm_framebuffer
*fb
;
2837 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2840 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
2844 r
->height
= fb
->height
;
2845 r
->width
= fb
->width
;
2846 r
->depth
= fb
->depth
;
2847 r
->bpp
= fb
->bits_per_pixel
;
2848 r
->pitch
= fb
->pitches
[0];
2849 if (fb
->funcs
->create_handle
) {
2850 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
2851 drm_is_control_client(file_priv
)) {
2852 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
2855 /* GET_FB() is an unprivileged ioctl so we must not
2856 * return a buffer-handle to non-master processes! For
2857 * backwards-compatibility reasons, we cannot make
2858 * GET_FB() privileged, so just return an invalid handle
2859 * for non-masters. */
2867 drm_framebuffer_unreference(fb
);
2873 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
2874 * @dev: drm device for the ioctl
2875 * @data: data pointer for the ioctl
2876 * @file_priv: drm file for the ioctl call
2878 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
2879 * rectangle list. Generic userspace which does frontbuffer rendering must call
2880 * this ioctl to flush out the changes on manual-update display outputs, e.g.
2881 * usb display-link, mipi manual update panels or edp panel self refresh modes.
2883 * Modesetting drivers which always update the frontbuffer do not need to
2884 * implement the corresponding ->dirty framebuffer callback.
2886 * Called by the user via ioctl.
2889 * Zero on success, errno on failure.
2891 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
2892 void *data
, struct drm_file
*file_priv
)
2894 struct drm_clip_rect __user
*clips_ptr
;
2895 struct drm_clip_rect
*clips
= NULL
;
2896 struct drm_mode_fb_dirty_cmd
*r
= data
;
2897 struct drm_framebuffer
*fb
;
2902 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2905 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
2909 num_clips
= r
->num_clips
;
2910 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
2912 if (!num_clips
!= !clips_ptr
) {
2917 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
2919 /* If userspace annotates copy, clips must come in pairs */
2920 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
2925 if (num_clips
&& clips_ptr
) {
2926 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
2930 clips
= kzalloc(num_clips
* sizeof(*clips
), GFP_KERNEL
);
2936 ret
= copy_from_user(clips
, clips_ptr
,
2937 num_clips
* sizeof(*clips
));
2944 if (fb
->funcs
->dirty
) {
2945 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
2954 drm_framebuffer_unreference(fb
);
2961 * drm_fb_release - remove and free the FBs on this file
2962 * @priv: drm file for the ioctl
2964 * Destroy all the FBs associated with @filp.
2966 * Called by the user via ioctl.
2969 * Zero on success, errno on failure.
2971 void drm_fb_release(struct drm_file
*priv
)
2973 struct drm_device
*dev
= priv
->minor
->dev
;
2974 struct drm_framebuffer
*fb
, *tfb
;
2976 mutex_lock(&priv
->fbs_lock
);
2977 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
2979 mutex_lock(&dev
->mode_config
.fb_lock
);
2980 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2981 __drm_framebuffer_unregister(dev
, fb
);
2982 mutex_unlock(&dev
->mode_config
.fb_lock
);
2984 list_del_init(&fb
->filp_head
);
2986 /* This will also drop the fpriv->fbs reference. */
2987 drm_framebuffer_remove(fb
);
2989 mutex_unlock(&priv
->fbs_lock
);
2993 * drm_property_create - create a new property type
2995 * @flags: flags specifying the property type
2996 * @name: name of the property
2997 * @num_values: number of pre-defined values
2999 * This creates a new generic drm property which can then be attached to a drm
3000 * object with drm_object_attach_property. The returned property object must be
3001 * freed with drm_property_destroy.
3004 * A pointer to the newly created property on success, NULL on failure.
3006 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3007 const char *name
, int num_values
)
3009 struct drm_property
*property
= NULL
;
3012 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3017 property
->values
= kzalloc(sizeof(uint64_t)*num_values
, GFP_KERNEL
);
3018 if (!property
->values
)
3022 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3026 property
->flags
= flags
;
3027 property
->num_values
= num_values
;
3028 INIT_LIST_HEAD(&property
->enum_blob_list
);
3031 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3032 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3035 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3038 kfree(property
->values
);
3042 EXPORT_SYMBOL(drm_property_create
);
3045 * drm_property_create - create a new enumeration property type
3047 * @flags: flags specifying the property type
3048 * @name: name of the property
3049 * @props: enumeration lists with property values
3050 * @num_values: number of pre-defined values
3052 * This creates a new generic drm property which can then be attached to a drm
3053 * object with drm_object_attach_property. The returned property object must be
3054 * freed with drm_property_destroy.
3056 * Userspace is only allowed to set one of the predefined values for enumeration
3060 * A pointer to the newly created property on success, NULL on failure.
3062 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3064 const struct drm_prop_enum_list
*props
,
3067 struct drm_property
*property
;
3070 flags
|= DRM_MODE_PROP_ENUM
;
3072 property
= drm_property_create(dev
, flags
, name
, num_values
);
3076 for (i
= 0; i
< num_values
; i
++) {
3077 ret
= drm_property_add_enum(property
, i
,
3081 drm_property_destroy(dev
, property
);
3088 EXPORT_SYMBOL(drm_property_create_enum
);
3091 * drm_property_create - create a new bitmask property type
3093 * @flags: flags specifying the property type
3094 * @name: name of the property
3095 * @props: enumeration lists with property bitflags
3096 * @num_values: number of pre-defined values
3098 * This creates a new generic drm property which can then be attached to a drm
3099 * object with drm_object_attach_property. The returned property object must be
3100 * freed with drm_property_destroy.
3102 * Compared to plain enumeration properties userspace is allowed to set any
3103 * or'ed together combination of the predefined property bitflag values
3106 * A pointer to the newly created property on success, NULL on failure.
3108 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3109 int flags
, const char *name
,
3110 const struct drm_prop_enum_list
*props
,
3113 struct drm_property
*property
;
3116 flags
|= DRM_MODE_PROP_BITMASK
;
3118 property
= drm_property_create(dev
, flags
, name
, num_values
);
3122 for (i
= 0; i
< num_values
; i
++) {
3123 ret
= drm_property_add_enum(property
, i
,
3127 drm_property_destroy(dev
, property
);
3134 EXPORT_SYMBOL(drm_property_create_bitmask
);
3137 * drm_property_create - create a new ranged property type
3139 * @flags: flags specifying the property type
3140 * @name: name of the property
3141 * @min: minimum value of the property
3142 * @max: maximum value of the property
3144 * This creates a new generic drm property which can then be attached to a drm
3145 * object with drm_object_attach_property. The returned property object must be
3146 * freed with drm_property_destroy.
3148 * Userspace is allowed to set any interger value in the (min, max) range
3152 * A pointer to the newly created property on success, NULL on failure.
3154 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3156 uint64_t min
, uint64_t max
)
3158 struct drm_property
*property
;
3160 flags
|= DRM_MODE_PROP_RANGE
;
3162 property
= drm_property_create(dev
, flags
, name
, 2);
3166 property
->values
[0] = min
;
3167 property
->values
[1] = max
;
3171 EXPORT_SYMBOL(drm_property_create_range
);
3174 * drm_property_add_enum - add a possible value to an enumeration property
3175 * @property: enumeration property to change
3176 * @index: index of the new enumeration
3177 * @value: value of the new enumeration
3178 * @name: symbolic name of the new enumeration
3180 * This functions adds enumerations to a property.
3182 * It's use is deprecated, drivers should use one of the more specific helpers
3183 * to directly create the property with all enumerations already attached.
3186 * Zero on success, error code on failure.
3188 int drm_property_add_enum(struct drm_property
*property
, int index
,
3189 uint64_t value
, const char *name
)
3191 struct drm_property_enum
*prop_enum
;
3193 if (!(property
->flags
& (DRM_MODE_PROP_ENUM
| DRM_MODE_PROP_BITMASK
)))
3197 * Bitmask enum properties have the additional constraint of values
3200 if ((property
->flags
& DRM_MODE_PROP_BITMASK
) && (value
> 63))
3203 if (!list_empty(&property
->enum_blob_list
)) {
3204 list_for_each_entry(prop_enum
, &property
->enum_blob_list
, head
) {
3205 if (prop_enum
->value
== value
) {
3206 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3207 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3213 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3217 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3218 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3219 prop_enum
->value
= value
;
3221 property
->values
[index
] = value
;
3222 list_add_tail(&prop_enum
->head
, &property
->enum_blob_list
);
3225 EXPORT_SYMBOL(drm_property_add_enum
);
3228 * drm_property_destroy - destroy a drm property
3230 * @property: property to destry
3232 * This function frees a property including any attached resources like
3233 * enumeration values.
3235 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3237 struct drm_property_enum
*prop_enum
, *pt
;
3239 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_blob_list
, head
) {
3240 list_del(&prop_enum
->head
);
3244 if (property
->num_values
)
3245 kfree(property
->values
);
3246 drm_mode_object_put(dev
, &property
->base
);
3247 list_del(&property
->head
);
3250 EXPORT_SYMBOL(drm_property_destroy
);
3253 * drm_object_attach_property - attach a property to a modeset object
3254 * @obj: drm modeset object
3255 * @property: property to attach
3256 * @init_val: initial value of the property
3258 * This attaches the given property to the modeset object with the given initial
3259 * value. Currently this function cannot fail since the properties are stored in
3260 * a statically sized array.
3262 void drm_object_attach_property(struct drm_mode_object
*obj
,
3263 struct drm_property
*property
,
3266 int count
= obj
->properties
->count
;
3268 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3269 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3270 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3271 "you see this message on the same object type.\n",
3276 obj
->properties
->ids
[count
] = property
->base
.id
;
3277 obj
->properties
->values
[count
] = init_val
;
3278 obj
->properties
->count
++;
3280 EXPORT_SYMBOL(drm_object_attach_property
);
3283 * drm_object_property_set_value - set the value of a property
3284 * @obj: drm mode object to set property value for
3285 * @property: property to set
3286 * @val: value the property should be set to
3288 * This functions sets a given property on a given object. This function only
3289 * changes the software state of the property, it does not call into the
3290 * driver's ->set_property callback.
3293 * Zero on success, error code on failure.
3295 int drm_object_property_set_value(struct drm_mode_object
*obj
,
3296 struct drm_property
*property
, uint64_t val
)
3300 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3301 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3302 obj
->properties
->values
[i
] = val
;
3309 EXPORT_SYMBOL(drm_object_property_set_value
);
3312 * drm_object_property_get_value - retrieve the value of a property
3313 * @obj: drm mode object to get property value from
3314 * @property: property to retrieve
3315 * @val: storage for the property value
3317 * This function retrieves the softare state of the given property for the given
3318 * property. Since there is no driver callback to retrieve the current property
3319 * value this might be out of sync with the hardware, depending upon the driver
3323 * Zero on success, error code on failure.
3325 int drm_object_property_get_value(struct drm_mode_object
*obj
,
3326 struct drm_property
*property
, uint64_t *val
)
3330 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3331 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3332 *val
= obj
->properties
->values
[i
];
3339 EXPORT_SYMBOL(drm_object_property_get_value
);
3342 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3345 * @file_priv: DRM file info
3347 * This function retrieves the current value for an connectors's property.
3349 * Called by the user via ioctl.
3352 * Zero on success, errno on failure.
3354 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
3355 void *data
, struct drm_file
*file_priv
)
3357 struct drm_mode_object
*obj
;
3358 struct drm_mode_get_property
*out_resp
= data
;
3359 struct drm_property
*property
;
3362 int value_count
= 0;
3365 struct drm_property_enum
*prop_enum
;
3366 struct drm_mode_property_enum __user
*enum_ptr
;
3367 struct drm_property_blob
*prop_blob
;
3368 uint32_t __user
*blob_id_ptr
;
3369 uint64_t __user
*values_ptr
;
3370 uint32_t __user
*blob_length_ptr
;
3372 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3375 drm_modeset_lock_all(dev
);
3376 obj
= drm_mode_object_find(dev
, out_resp
->prop_id
, DRM_MODE_OBJECT_PROPERTY
);
3381 property
= obj_to_property(obj
);
3383 if (property
->flags
& (DRM_MODE_PROP_ENUM
| DRM_MODE_PROP_BITMASK
)) {
3384 list_for_each_entry(prop_enum
, &property
->enum_blob_list
, head
)
3386 } else if (property
->flags
& DRM_MODE_PROP_BLOB
) {
3387 list_for_each_entry(prop_blob
, &property
->enum_blob_list
, head
)
3391 value_count
= property
->num_values
;
3393 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
3394 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
3395 out_resp
->flags
= property
->flags
;
3397 if ((out_resp
->count_values
>= value_count
) && value_count
) {
3398 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
3399 for (i
= 0; i
< value_count
; i
++) {
3400 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
3406 out_resp
->count_values
= value_count
;
3408 if (property
->flags
& (DRM_MODE_PROP_ENUM
| DRM_MODE_PROP_BITMASK
)) {
3409 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
3411 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
3412 list_for_each_entry(prop_enum
, &property
->enum_blob_list
, head
) {
3414 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
3419 if (copy_to_user(&enum_ptr
[copied
].name
,
3420 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
3427 out_resp
->count_enum_blobs
= enum_count
;
3430 if (property
->flags
& DRM_MODE_PROP_BLOB
) {
3431 if ((out_resp
->count_enum_blobs
>= blob_count
) && blob_count
) {
3433 blob_id_ptr
= (uint32_t __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
3434 blob_length_ptr
= (uint32_t __user
*)(unsigned long)out_resp
->values_ptr
;
3436 list_for_each_entry(prop_blob
, &property
->enum_blob_list
, head
) {
3437 if (put_user(prop_blob
->base
.id
, blob_id_ptr
+ copied
)) {
3442 if (put_user(prop_blob
->length
, blob_length_ptr
+ copied
)) {
3450 out_resp
->count_enum_blobs
= blob_count
;
3453 drm_modeset_unlock_all(dev
);
3457 static struct drm_property_blob
*drm_property_create_blob(struct drm_device
*dev
, int length
,
3460 struct drm_property_blob
*blob
;
3463 if (!length
|| !data
)
3466 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
3470 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
3476 blob
->length
= length
;
3478 memcpy(blob
->data
, data
, length
);
3480 list_add_tail(&blob
->head
, &dev
->mode_config
.property_blob_list
);
3484 static void drm_property_destroy_blob(struct drm_device
*dev
,
3485 struct drm_property_blob
*blob
)
3487 drm_mode_object_put(dev
, &blob
->base
);
3488 list_del(&blob
->head
);
3493 * drm_mode_getblob_ioctl - get the contents of a blob property value
3496 * @file_priv: DRM file info
3498 * This function retrieves the contents of a blob property. The value stored in
3499 * an object's blob property is just a normal modeset object id.
3501 * Called by the user via ioctl.
3504 * Zero on success, errno on failure.
3506 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
3507 void *data
, struct drm_file
*file_priv
)
3509 struct drm_mode_object
*obj
;
3510 struct drm_mode_get_blob
*out_resp
= data
;
3511 struct drm_property_blob
*blob
;
3513 void __user
*blob_ptr
;
3515 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3518 drm_modeset_lock_all(dev
);
3519 obj
= drm_mode_object_find(dev
, out_resp
->blob_id
, DRM_MODE_OBJECT_BLOB
);
3524 blob
= obj_to_blob(obj
);
3526 if (out_resp
->length
== blob
->length
) {
3527 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
3528 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)){
3533 out_resp
->length
= blob
->length
;
3536 drm_modeset_unlock_all(dev
);
3541 * drm_mode_connector_update_edid_property - update the edid property of a connector
3542 * @connector: drm connector
3543 * @edid: new value of the edid property
3545 * This function creates a new blob modeset object and assigns its id to the
3546 * connector's edid property.
3549 * Zero on success, errno on failure.
3551 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
3554 struct drm_device
*dev
= connector
->dev
;
3557 if (connector
->edid_blob_ptr
)
3558 drm_property_destroy_blob(dev
, connector
->edid_blob_ptr
);
3560 /* Delete edid, when there is none. */
3562 connector
->edid_blob_ptr
= NULL
;
3563 ret
= drm_object_property_set_value(&connector
->base
, dev
->mode_config
.edid_property
, 0);
3567 size
= EDID_LENGTH
* (1 + edid
->extensions
);
3568 connector
->edid_blob_ptr
= drm_property_create_blob(connector
->dev
,
3570 if (!connector
->edid_blob_ptr
)
3573 ret
= drm_object_property_set_value(&connector
->base
,
3574 dev
->mode_config
.edid_property
,
3575 connector
->edid_blob_ptr
->base
.id
);
3579 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
3581 static bool drm_property_change_is_valid(struct drm_property
*property
,
3584 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
3586 if (property
->flags
& DRM_MODE_PROP_RANGE
) {
3587 if (value
< property
->values
[0] || value
> property
->values
[1])
3590 } else if (property
->flags
& DRM_MODE_PROP_BITMASK
) {
3592 uint64_t valid_mask
= 0;
3593 for (i
= 0; i
< property
->num_values
; i
++)
3594 valid_mask
|= (1ULL << property
->values
[i
]);
3595 return !(value
& ~valid_mask
);
3596 } else if (property
->flags
& DRM_MODE_PROP_BLOB
) {
3597 /* Only the driver knows */
3601 for (i
= 0; i
< property
->num_values
; i
++)
3602 if (property
->values
[i
] == value
)
3609 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
3612 * @file_priv: DRM file info
3614 * This function sets the current value for a connectors's property. It also
3615 * calls into a driver's ->set_property callback to update the hardware state
3617 * Called by the user via ioctl.
3620 * Zero on success, errno on failure.
3622 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
3623 void *data
, struct drm_file
*file_priv
)
3625 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
3626 struct drm_mode_obj_set_property obj_set_prop
= {
3627 .value
= conn_set_prop
->value
,
3628 .prop_id
= conn_set_prop
->prop_id
,
3629 .obj_id
= conn_set_prop
->connector_id
,
3630 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
3633 /* It does all the locking and checking we need */
3634 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
3637 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
3638 struct drm_property
*property
,
3642 struct drm_connector
*connector
= obj_to_connector(obj
);
3644 /* Do DPMS ourselves */
3645 if (property
== connector
->dev
->mode_config
.dpms_property
) {
3646 if (connector
->funcs
->dpms
)
3647 (*connector
->funcs
->dpms
)(connector
, (int)value
);
3649 } else if (connector
->funcs
->set_property
)
3650 ret
= connector
->funcs
->set_property(connector
, property
, value
);
3652 /* store the property value if successful */
3654 drm_object_property_set_value(&connector
->base
, property
, value
);
3658 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
3659 struct drm_property
*property
,
3663 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
3665 if (crtc
->funcs
->set_property
)
3666 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
3668 drm_object_property_set_value(obj
, property
, value
);
3673 static int drm_mode_plane_set_obj_prop(struct drm_mode_object
*obj
,
3674 struct drm_property
*property
,
3678 struct drm_plane
*plane
= obj_to_plane(obj
);
3680 if (plane
->funcs
->set_property
)
3681 ret
= plane
->funcs
->set_property(plane
, property
, value
);
3683 drm_object_property_set_value(obj
, property
, value
);
3689 * drm_mode_getproperty_ioctl - get the current value of a object's property
3692 * @file_priv: DRM file info
3694 * This function retrieves the current value for an object's property. Compared
3695 * to the connector specific ioctl this one is extended to also work on crtc and
3698 * Called by the user via ioctl.
3701 * Zero on success, errno on failure.
3703 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
3704 struct drm_file
*file_priv
)
3706 struct drm_mode_obj_get_properties
*arg
= data
;
3707 struct drm_mode_object
*obj
;
3711 int props_count
= 0;
3712 uint32_t __user
*props_ptr
;
3713 uint64_t __user
*prop_values_ptr
;
3715 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3718 drm_modeset_lock_all(dev
);
3720 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
3725 if (!obj
->properties
) {
3730 props_count
= obj
->properties
->count
;
3732 /* This ioctl is called twice, once to determine how much space is
3733 * needed, and the 2nd time to fill it. */
3734 if ((arg
->count_props
>= props_count
) && props_count
) {
3736 props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->props_ptr
);
3737 prop_values_ptr
= (uint64_t __user
*)(unsigned long)
3738 (arg
->prop_values_ptr
);
3739 for (i
= 0; i
< props_count
; i
++) {
3740 if (put_user(obj
->properties
->ids
[i
],
3741 props_ptr
+ copied
)) {
3745 if (put_user(obj
->properties
->values
[i
],
3746 prop_values_ptr
+ copied
)) {
3753 arg
->count_props
= props_count
;
3755 drm_modeset_unlock_all(dev
);
3760 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
3763 * @file_priv: DRM file info
3765 * This function sets the current value for an object's property. It also calls
3766 * into a driver's ->set_property callback to update the hardware state.
3767 * Compared to the connector specific ioctl this one is extended to also work on
3768 * crtc and plane objects.
3770 * Called by the user via ioctl.
3773 * Zero on success, errno on failure.
3775 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
3776 struct drm_file
*file_priv
)
3778 struct drm_mode_obj_set_property
*arg
= data
;
3779 struct drm_mode_object
*arg_obj
;
3780 struct drm_mode_object
*prop_obj
;
3781 struct drm_property
*property
;
3785 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3788 drm_modeset_lock_all(dev
);
3790 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
3795 if (!arg_obj
->properties
)
3798 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
3799 if (arg_obj
->properties
->ids
[i
] == arg
->prop_id
)
3802 if (i
== arg_obj
->properties
->count
)
3805 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
3806 DRM_MODE_OBJECT_PROPERTY
);
3811 property
= obj_to_property(prop_obj
);
3813 if (!drm_property_change_is_valid(property
, arg
->value
))
3816 switch (arg_obj
->type
) {
3817 case DRM_MODE_OBJECT_CONNECTOR
:
3818 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
3821 case DRM_MODE_OBJECT_CRTC
:
3822 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
3824 case DRM_MODE_OBJECT_PLANE
:
3825 ret
= drm_mode_plane_set_obj_prop(arg_obj
, property
, arg
->value
);
3830 drm_modeset_unlock_all(dev
);
3835 * drm_mode_connector_attach_encoder - attach a connector to an encoder
3836 * @connector: connector to attach
3837 * @encoder: encoder to attach @connector to
3839 * This function links up a connector to an encoder. Note that the routing
3840 * restrictions between encoders and crtcs are exposed to userspace through the
3841 * possible_clones and possible_crtcs bitmasks.
3844 * Zero on success, errno on failure.
3846 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
3847 struct drm_encoder
*encoder
)
3851 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
3852 if (connector
->encoder_ids
[i
] == 0) {
3853 connector
->encoder_ids
[i
] = encoder
->base
.id
;
3859 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
3862 * drm_mode_crtc_set_gamma_size - set the gamma table size
3863 * @crtc: CRTC to set the gamma table size for
3864 * @gamma_size: size of the gamma table
3866 * Drivers which support gamma tables should set this to the supported gamma
3867 * table size when initializing the CRTC. Currently the drm core only supports a
3868 * fixed gamma table size.
3871 * Zero on success, errno on failure.
3873 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
3876 crtc
->gamma_size
= gamma_size
;
3878 crtc
->gamma_store
= kzalloc(gamma_size
* sizeof(uint16_t) * 3, GFP_KERNEL
);
3879 if (!crtc
->gamma_store
) {
3880 crtc
->gamma_size
= 0;
3886 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
3889 * drm_mode_gamma_set_ioctl - set the gamma table
3892 * @file_priv: DRM file info
3894 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
3895 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
3897 * Called by the user via ioctl.
3900 * Zero on success, errno on failure.
3902 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
3903 void *data
, struct drm_file
*file_priv
)
3905 struct drm_mode_crtc_lut
*crtc_lut
= data
;
3906 struct drm_mode_object
*obj
;
3907 struct drm_crtc
*crtc
;
3908 void *r_base
, *g_base
, *b_base
;
3912 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3915 drm_modeset_lock_all(dev
);
3916 obj
= drm_mode_object_find(dev
, crtc_lut
->crtc_id
, DRM_MODE_OBJECT_CRTC
);
3921 crtc
= obj_to_crtc(obj
);
3923 if (crtc
->funcs
->gamma_set
== NULL
) {
3928 /* memcpy into gamma store */
3929 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
3934 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
3935 r_base
= crtc
->gamma_store
;
3936 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
3941 g_base
= r_base
+ size
;
3942 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
3947 b_base
= g_base
+ size
;
3948 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
3953 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
3956 drm_modeset_unlock_all(dev
);
3962 * drm_mode_gamma_get_ioctl - get the gamma table
3965 * @file_priv: DRM file info
3967 * Copy the current gamma table into the storage provided. This also provides
3968 * the gamma table size the driver expects, which can be used to size the
3969 * allocated storage.
3971 * Called by the user via ioctl.
3974 * Zero on success, errno on failure.
3976 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
3977 void *data
, struct drm_file
*file_priv
)
3979 struct drm_mode_crtc_lut
*crtc_lut
= data
;
3980 struct drm_mode_object
*obj
;
3981 struct drm_crtc
*crtc
;
3982 void *r_base
, *g_base
, *b_base
;
3986 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3989 drm_modeset_lock_all(dev
);
3990 obj
= drm_mode_object_find(dev
, crtc_lut
->crtc_id
, DRM_MODE_OBJECT_CRTC
);
3995 crtc
= obj_to_crtc(obj
);
3997 /* memcpy into gamma store */
3998 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4003 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4004 r_base
= crtc
->gamma_store
;
4005 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
4010 g_base
= r_base
+ size
;
4011 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
4016 b_base
= g_base
+ size
;
4017 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
4022 drm_modeset_unlock_all(dev
);
4027 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4030 * @file_priv: DRM file info
4032 * This schedules an asynchronous update on a given CRTC, called page flip.
4033 * Optionally a drm event is generated to signal the completion of the event.
4034 * Generic drivers cannot assume that a pageflip with changed framebuffer
4035 * properties (including driver specific metadata like tiling layout) will work,
4036 * but some drivers support e.g. pixel format changes through the pageflip
4039 * Called by the user via ioctl.
4042 * Zero on success, errno on failure.
4044 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
4045 void *data
, struct drm_file
*file_priv
)
4047 struct drm_mode_crtc_page_flip
*page_flip
= data
;
4048 struct drm_mode_object
*obj
;
4049 struct drm_crtc
*crtc
;
4050 struct drm_framebuffer
*fb
= NULL
, *old_fb
= NULL
;
4051 struct drm_pending_vblank_event
*e
= NULL
;
4052 unsigned long flags
;
4055 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
4056 page_flip
->reserved
!= 0)
4059 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
4062 obj
= drm_mode_object_find(dev
, page_flip
->crtc_id
, DRM_MODE_OBJECT_CRTC
);
4065 crtc
= obj_to_crtc(obj
);
4067 mutex_lock(&crtc
->mutex
);
4068 if (crtc
->fb
== NULL
) {
4069 /* The framebuffer is currently unbound, presumably
4070 * due to a hotplug event, that userspace has not
4077 if (crtc
->funcs
->page_flip
== NULL
)
4080 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
4086 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
4090 if (crtc
->fb
->pixel_format
!= fb
->pixel_format
) {
4091 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4096 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4098 spin_lock_irqsave(&dev
->event_lock
, flags
);
4099 if (file_priv
->event_space
< sizeof e
->event
) {
4100 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4103 file_priv
->event_space
-= sizeof e
->event
;
4104 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4106 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
4108 spin_lock_irqsave(&dev
->event_lock
, flags
);
4109 file_priv
->event_space
+= sizeof e
->event
;
4110 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4114 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
4115 e
->event
.base
.length
= sizeof e
->event
;
4116 e
->event
.user_data
= page_flip
->user_data
;
4117 e
->base
.event
= &e
->event
.base
;
4118 e
->base
.file_priv
= file_priv
;
4120 (void (*) (struct drm_pending_event
*)) kfree
;
4124 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
4126 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4127 spin_lock_irqsave(&dev
->event_lock
, flags
);
4128 file_priv
->event_space
+= sizeof e
->event
;
4129 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4132 /* Keep the old fb, don't unref it. */
4136 * Warn if the driver hasn't properly updated the crtc->fb
4137 * field to reflect that the new framebuffer is now used.
4138 * Failing to do so will screw with the reference counting
4141 WARN_ON(crtc
->fb
!= fb
);
4142 /* Unref only the old framebuffer. */
4148 drm_framebuffer_unreference(fb
);
4150 drm_framebuffer_unreference(old_fb
);
4151 mutex_unlock(&crtc
->mutex
);
4157 * drm_mode_config_reset - call ->reset callbacks
4160 * This functions calls all the crtc's, encoder's and connector's ->reset
4161 * callback. Drivers can use this in e.g. their driver load or resume code to
4162 * reset hardware and software state.
4164 void drm_mode_config_reset(struct drm_device
*dev
)
4166 struct drm_crtc
*crtc
;
4167 struct drm_encoder
*encoder
;
4168 struct drm_connector
*connector
;
4170 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
4171 if (crtc
->funcs
->reset
)
4172 crtc
->funcs
->reset(crtc
);
4174 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
4175 if (encoder
->funcs
->reset
)
4176 encoder
->funcs
->reset(encoder
);
4178 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
4179 connector
->status
= connector_status_unknown
;
4181 if (connector
->funcs
->reset
)
4182 connector
->funcs
->reset(connector
);
4185 EXPORT_SYMBOL(drm_mode_config_reset
);
4188 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4191 * @file_priv: DRM file info
4193 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4194 * TTM or something else entirely) and returns the resulting buffer handle. This
4195 * handle can then be wrapped up into a framebuffer modeset object.
4197 * Note that userspace is not allowed to use such objects for render
4198 * acceleration - drivers must create their own private ioctls for such a use
4201 * Called by the user via ioctl.
4204 * Zero on success, errno on failure.
4206 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
4207 void *data
, struct drm_file
*file_priv
)
4209 struct drm_mode_create_dumb
*args
= data
;
4210 u32 cpp
, stride
, size
;
4212 if (!dev
->driver
->dumb_create
)
4214 if (!args
->width
|| !args
->height
|| !args
->bpp
)
4217 /* overflow checks for 32bit size calculations */
4218 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
4219 if (cpp
> 0xffffffffU
/ args
->width
)
4221 stride
= cpp
* args
->width
;
4222 if (args
->height
> 0xffffffffU
/ stride
)
4225 /* test for wrap-around */
4226 size
= args
->height
* stride
;
4227 if (PAGE_ALIGN(size
) == 0)
4230 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
4234 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4237 * @file_priv: DRM file info
4239 * Allocate an offset in the drm device node's address space to be able to
4240 * memory map a dumb buffer.
4242 * Called by the user via ioctl.
4245 * Zero on success, errno on failure.
4247 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
4248 void *data
, struct drm_file
*file_priv
)
4250 struct drm_mode_map_dumb
*args
= data
;
4252 /* call driver ioctl to get mmap offset */
4253 if (!dev
->driver
->dumb_map_offset
)
4256 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
4260 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4263 * @file_priv: DRM file info
4265 * This destroys the userspace handle for the given dumb backing storage buffer.
4266 * Since buffer objects must be reference counted in the kernel a buffer object
4267 * won't be immediately freed if a framebuffer modeset object still uses it.
4269 * Called by the user via ioctl.
4272 * Zero on success, errno on failure.
4274 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
4275 void *data
, struct drm_file
*file_priv
)
4277 struct drm_mode_destroy_dumb
*args
= data
;
4279 if (!dev
->driver
->dumb_destroy
)
4282 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
4286 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4287 * @format: pixel format (DRM_FORMAT_*)
4288 * @depth: storage for the depth value
4289 * @bpp: storage for the bpp value
4291 * This only supports RGB formats here for compat with code that doesn't use
4292 * pixel formats directly yet.
4294 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
4299 case DRM_FORMAT_RGB332
:
4300 case DRM_FORMAT_BGR233
:
4304 case DRM_FORMAT_XRGB1555
:
4305 case DRM_FORMAT_XBGR1555
:
4306 case DRM_FORMAT_RGBX5551
:
4307 case DRM_FORMAT_BGRX5551
:
4308 case DRM_FORMAT_ARGB1555
:
4309 case DRM_FORMAT_ABGR1555
:
4310 case DRM_FORMAT_RGBA5551
:
4311 case DRM_FORMAT_BGRA5551
:
4315 case DRM_FORMAT_RGB565
:
4316 case DRM_FORMAT_BGR565
:
4320 case DRM_FORMAT_RGB888
:
4321 case DRM_FORMAT_BGR888
:
4325 case DRM_FORMAT_XRGB8888
:
4326 case DRM_FORMAT_XBGR8888
:
4327 case DRM_FORMAT_RGBX8888
:
4328 case DRM_FORMAT_BGRX8888
:
4332 case DRM_FORMAT_XRGB2101010
:
4333 case DRM_FORMAT_XBGR2101010
:
4334 case DRM_FORMAT_RGBX1010102
:
4335 case DRM_FORMAT_BGRX1010102
:
4336 case DRM_FORMAT_ARGB2101010
:
4337 case DRM_FORMAT_ABGR2101010
:
4338 case DRM_FORMAT_RGBA1010102
:
4339 case DRM_FORMAT_BGRA1010102
:
4343 case DRM_FORMAT_ARGB8888
:
4344 case DRM_FORMAT_ABGR8888
:
4345 case DRM_FORMAT_RGBA8888
:
4346 case DRM_FORMAT_BGRA8888
:
4351 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4352 drm_get_format_name(format
));
4358 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
4361 * drm_format_num_planes - get the number of planes for format
4362 * @format: pixel format (DRM_FORMAT_*)
4365 * The number of planes used by the specified pixel format.
4367 int drm_format_num_planes(uint32_t format
)
4370 case DRM_FORMAT_YUV410
:
4371 case DRM_FORMAT_YVU410
:
4372 case DRM_FORMAT_YUV411
:
4373 case DRM_FORMAT_YVU411
:
4374 case DRM_FORMAT_YUV420
:
4375 case DRM_FORMAT_YVU420
:
4376 case DRM_FORMAT_YUV422
:
4377 case DRM_FORMAT_YVU422
:
4378 case DRM_FORMAT_YUV444
:
4379 case DRM_FORMAT_YVU444
:
4381 case DRM_FORMAT_NV12
:
4382 case DRM_FORMAT_NV21
:
4383 case DRM_FORMAT_NV16
:
4384 case DRM_FORMAT_NV61
:
4385 case DRM_FORMAT_NV24
:
4386 case DRM_FORMAT_NV42
:
4392 EXPORT_SYMBOL(drm_format_num_planes
);
4395 * drm_format_plane_cpp - determine the bytes per pixel value
4396 * @format: pixel format (DRM_FORMAT_*)
4397 * @plane: plane index
4400 * The bytes per pixel value for the specified plane.
4402 int drm_format_plane_cpp(uint32_t format
, int plane
)
4407 if (plane
>= drm_format_num_planes(format
))
4411 case DRM_FORMAT_YUYV
:
4412 case DRM_FORMAT_YVYU
:
4413 case DRM_FORMAT_UYVY
:
4414 case DRM_FORMAT_VYUY
:
4416 case DRM_FORMAT_NV12
:
4417 case DRM_FORMAT_NV21
:
4418 case DRM_FORMAT_NV16
:
4419 case DRM_FORMAT_NV61
:
4420 case DRM_FORMAT_NV24
:
4421 case DRM_FORMAT_NV42
:
4422 return plane
? 2 : 1;
4423 case DRM_FORMAT_YUV410
:
4424 case DRM_FORMAT_YVU410
:
4425 case DRM_FORMAT_YUV411
:
4426 case DRM_FORMAT_YVU411
:
4427 case DRM_FORMAT_YUV420
:
4428 case DRM_FORMAT_YVU420
:
4429 case DRM_FORMAT_YUV422
:
4430 case DRM_FORMAT_YVU422
:
4431 case DRM_FORMAT_YUV444
:
4432 case DRM_FORMAT_YVU444
:
4435 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
4439 EXPORT_SYMBOL(drm_format_plane_cpp
);
4442 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4443 * @format: pixel format (DRM_FORMAT_*)
4446 * The horizontal chroma subsampling factor for the
4447 * specified pixel format.
4449 int drm_format_horz_chroma_subsampling(uint32_t format
)
4452 case DRM_FORMAT_YUV411
:
4453 case DRM_FORMAT_YVU411
:
4454 case DRM_FORMAT_YUV410
:
4455 case DRM_FORMAT_YVU410
:
4457 case DRM_FORMAT_YUYV
:
4458 case DRM_FORMAT_YVYU
:
4459 case DRM_FORMAT_UYVY
:
4460 case DRM_FORMAT_VYUY
:
4461 case DRM_FORMAT_NV12
:
4462 case DRM_FORMAT_NV21
:
4463 case DRM_FORMAT_NV16
:
4464 case DRM_FORMAT_NV61
:
4465 case DRM_FORMAT_YUV422
:
4466 case DRM_FORMAT_YVU422
:
4467 case DRM_FORMAT_YUV420
:
4468 case DRM_FORMAT_YVU420
:
4474 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
4477 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4478 * @format: pixel format (DRM_FORMAT_*)
4481 * The vertical chroma subsampling factor for the
4482 * specified pixel format.
4484 int drm_format_vert_chroma_subsampling(uint32_t format
)
4487 case DRM_FORMAT_YUV410
:
4488 case DRM_FORMAT_YVU410
:
4490 case DRM_FORMAT_YUV420
:
4491 case DRM_FORMAT_YVU420
:
4492 case DRM_FORMAT_NV12
:
4493 case DRM_FORMAT_NV21
:
4499 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
4502 * drm_mode_config_init - initialize DRM mode_configuration structure
4505 * Initialize @dev's mode_config structure, used for tracking the graphics
4506 * configuration of @dev.
4508 * Since this initializes the modeset locks, no locking is possible. Which is no
4509 * problem, since this should happen single threaded at init time. It is the
4510 * driver's problem to ensure this guarantee.
4513 void drm_mode_config_init(struct drm_device
*dev
)
4515 mutex_init(&dev
->mode_config
.mutex
);
4516 mutex_init(&dev
->mode_config
.idr_mutex
);
4517 mutex_init(&dev
->mode_config
.fb_lock
);
4518 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
4519 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
4520 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
4521 INIT_LIST_HEAD(&dev
->mode_config
.bridge_list
);
4522 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
4523 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
4524 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
4525 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
4526 idr_init(&dev
->mode_config
.crtc_idr
);
4528 drm_modeset_lock_all(dev
);
4529 drm_mode_create_standard_connector_properties(dev
);
4530 drm_modeset_unlock_all(dev
);
4532 /* Just to be sure */
4533 dev
->mode_config
.num_fb
= 0;
4534 dev
->mode_config
.num_connector
= 0;
4535 dev
->mode_config
.num_crtc
= 0;
4536 dev
->mode_config
.num_encoder
= 0;
4538 EXPORT_SYMBOL(drm_mode_config_init
);
4541 * drm_mode_config_cleanup - free up DRM mode_config info
4544 * Free up all the connectors and CRTCs associated with this DRM device, then
4545 * free up the framebuffers and associated buffer objects.
4547 * Note that since this /should/ happen single-threaded at driver/device
4548 * teardown time, no locking is required. It's the driver's job to ensure that
4549 * this guarantee actually holds true.
4551 * FIXME: cleanup any dangling user buffer objects too
4553 void drm_mode_config_cleanup(struct drm_device
*dev
)
4555 struct drm_connector
*connector
, *ot
;
4556 struct drm_crtc
*crtc
, *ct
;
4557 struct drm_encoder
*encoder
, *enct
;
4558 struct drm_bridge
*bridge
, *brt
;
4559 struct drm_framebuffer
*fb
, *fbt
;
4560 struct drm_property
*property
, *pt
;
4561 struct drm_property_blob
*blob
, *bt
;
4562 struct drm_plane
*plane
, *plt
;
4564 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
4566 encoder
->funcs
->destroy(encoder
);
4569 list_for_each_entry_safe(bridge
, brt
,
4570 &dev
->mode_config
.bridge_list
, head
) {
4571 bridge
->funcs
->destroy(bridge
);
4574 list_for_each_entry_safe(connector
, ot
,
4575 &dev
->mode_config
.connector_list
, head
) {
4576 connector
->funcs
->destroy(connector
);
4579 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
4581 drm_property_destroy(dev
, property
);
4584 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
4586 drm_property_destroy_blob(dev
, blob
);
4590 * Single-threaded teardown context, so it's not required to grab the
4591 * fb_lock to protect against concurrent fb_list access. Contrary, it
4592 * would actually deadlock with the drm_framebuffer_cleanup function.
4594 * Also, if there are any framebuffers left, that's a driver leak now,
4595 * so politely WARN about this.
4597 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
4598 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
4599 drm_framebuffer_remove(fb
);
4602 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
4604 plane
->funcs
->destroy(plane
);
4607 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
4608 crtc
->funcs
->destroy(crtc
);
4611 idr_destroy(&dev
->mode_config
.crtc_idr
);
4613 EXPORT_SYMBOL(drm_mode_config_cleanup
);