2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_fourcc.h>
40 #include <drm/drm_modeset_lock.h>
42 #include "drm_crtc_internal.h"
43 #include "drm_internal.h"
45 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
46 struct drm_mode_fb_cmd2
*r
,
47 struct drm_file
*file_priv
);
49 /* Avoid boilerplate. I'm tired of typing. */
50 #define DRM_ENUM_NAME_FN(fnname, list) \
51 const char *fnname(int val) \
54 for (i = 0; i < ARRAY_SIZE(list); i++) { \
55 if (list[i].type == val) \
56 return list[i].name; \
64 static const struct drm_prop_enum_list drm_dpms_enum_list
[] =
65 { { DRM_MODE_DPMS_ON
, "On" },
66 { DRM_MODE_DPMS_STANDBY
, "Standby" },
67 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
68 { DRM_MODE_DPMS_OFF
, "Off" }
71 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
73 static const struct drm_prop_enum_list drm_plane_type_enum_list
[] =
75 { DRM_PLANE_TYPE_OVERLAY
, "Overlay" },
76 { DRM_PLANE_TYPE_PRIMARY
, "Primary" },
77 { DRM_PLANE_TYPE_CURSOR
, "Cursor" },
83 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] =
85 { DRM_MODE_SCALE_NONE
, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
87 { DRM_MODE_SCALE_CENTER
, "Center" },
88 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list
[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE
, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3
, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9
, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list
[] =
102 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
103 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
104 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
107 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
109 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] =
111 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
112 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
113 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
116 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
117 drm_dvi_i_subconnector_enum_list
)
119 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] =
121 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
125 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
128 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
130 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] =
132 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
133 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
134 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
135 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
136 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
139 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
140 drm_tv_subconnector_enum_list
)
142 static const struct drm_prop_enum_list drm_dirty_info_enum_list
[] = {
143 { DRM_MODE_DIRTY_OFF
, "Off" },
144 { DRM_MODE_DIRTY_ON
, "On" },
145 { DRM_MODE_DIRTY_ANNOTATE
, "Annotate" },
148 struct drm_conn_prop_enum_list
{
155 * Connector and encoder types.
157 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] =
158 { { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
159 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
160 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
161 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
162 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
163 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
164 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
165 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
166 { DRM_MODE_CONNECTOR_Component
, "Component" },
167 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
168 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
169 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
170 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
171 { DRM_MODE_CONNECTOR_TV
, "TV" },
172 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
173 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
174 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
177 static const struct drm_prop_enum_list drm_encoder_enum_list
[] =
178 { { DRM_MODE_ENCODER_NONE
, "None" },
179 { DRM_MODE_ENCODER_DAC
, "DAC" },
180 { DRM_MODE_ENCODER_TMDS
, "TMDS" },
181 { DRM_MODE_ENCODER_LVDS
, "LVDS" },
182 { DRM_MODE_ENCODER_TVDAC
, "TV" },
183 { DRM_MODE_ENCODER_VIRTUAL
, "Virtual" },
184 { DRM_MODE_ENCODER_DSI
, "DSI" },
185 { DRM_MODE_ENCODER_DPMST
, "DP MST" },
188 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] =
190 { SubPixelUnknown
, "Unknown" },
191 { SubPixelHorizontalRGB
, "Horizontal RGB" },
192 { SubPixelHorizontalBGR
, "Horizontal BGR" },
193 { SubPixelVerticalRGB
, "Vertical RGB" },
194 { SubPixelVerticalBGR
, "Vertical BGR" },
195 { SubPixelNone
, "None" },
198 void drm_connector_ida_init(void)
202 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
203 ida_init(&drm_connector_enum_list
[i
].ida
);
206 void drm_connector_ida_destroy(void)
210 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
211 ida_destroy(&drm_connector_enum_list
[i
].ida
);
215 * drm_get_connector_status_name - return a string for connector status
216 * @status: connector status to compute name of
218 * In contrast to the other drm_get_*_name functions this one here returns a
219 * const pointer and hence is threadsafe.
221 const char *drm_get_connector_status_name(enum drm_connector_status status
)
223 if (status
== connector_status_connected
)
225 else if (status
== connector_status_disconnected
)
226 return "disconnected";
230 EXPORT_SYMBOL(drm_get_connector_status_name
);
233 * drm_get_subpixel_order_name - return a string for a given subpixel enum
234 * @order: enum of subpixel_order
236 * Note you could abuse this and return something out of bounds, but that
237 * would be a caller error. No unscrubbed user data should make it here.
239 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
241 return drm_subpixel_enum_list
[order
].name
;
243 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
245 static char printable_char(int c
)
247 return isascii(c
) && isprint(c
) ? c
: '?';
251 * drm_get_format_name - return a string for drm fourcc format
252 * @format: format to compute name of
254 * Note that the buffer used by this function is globally shared and owned by
255 * the function itself.
257 * FIXME: This isn't really multithreading safe.
259 const char *drm_get_format_name(uint32_t format
)
263 snprintf(buf
, sizeof(buf
),
264 "%c%c%c%c %s-endian (0x%08x)",
265 printable_char(format
& 0xff),
266 printable_char((format
>> 8) & 0xff),
267 printable_char((format
>> 16) & 0xff),
268 printable_char((format
>> 24) & 0x7f),
269 format
& DRM_FORMAT_BIG_ENDIAN
? "big" : "little",
274 EXPORT_SYMBOL(drm_get_format_name
);
277 * Internal function to assign a slot in the object idr and optionally
278 * register the object into the idr.
280 static int drm_mode_object_get_reg(struct drm_device
*dev
,
281 struct drm_mode_object
*obj
,
287 mutex_lock(&dev
->mode_config
.idr_mutex
);
288 ret
= idr_alloc(&dev
->mode_config
.crtc_idr
, register_obj
? obj
: NULL
, 1, 0, GFP_KERNEL
);
291 * Set up the object linking under the protection of the idr
292 * lock so that other users can't see inconsistent state.
295 obj
->type
= obj_type
;
297 mutex_unlock(&dev
->mode_config
.idr_mutex
);
299 return ret
< 0 ? ret
: 0;
303 * drm_mode_object_get - allocate a new modeset identifier
305 * @obj: object pointer, used to generate unique ID
306 * @obj_type: object type
308 * Create a unique identifier based on @ptr in @dev's identifier space. Used
309 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
310 * modeset identifiers are _not_ reference counted. Hence don't use this for
311 * reference counted modeset objects like framebuffers.
314 * New unique (relative to other objects in @dev) integer identifier for the
317 int drm_mode_object_get(struct drm_device
*dev
,
318 struct drm_mode_object
*obj
, uint32_t obj_type
)
320 return drm_mode_object_get_reg(dev
, obj
, obj_type
, true);
323 static void drm_mode_object_register(struct drm_device
*dev
,
324 struct drm_mode_object
*obj
)
326 mutex_lock(&dev
->mode_config
.idr_mutex
);
327 idr_replace(&dev
->mode_config
.crtc_idr
, obj
, obj
->id
);
328 mutex_unlock(&dev
->mode_config
.idr_mutex
);
332 * drm_mode_object_put - free a modeset identifer
334 * @object: object to free
336 * Free @id from @dev's unique identifier pool. Note that despite the _get
337 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
338 * for reference counted modeset objects like framebuffers.
340 void drm_mode_object_put(struct drm_device
*dev
,
341 struct drm_mode_object
*object
)
343 mutex_lock(&dev
->mode_config
.idr_mutex
);
344 idr_remove(&dev
->mode_config
.crtc_idr
, object
->id
);
345 mutex_unlock(&dev
->mode_config
.idr_mutex
);
348 static struct drm_mode_object
*_object_find(struct drm_device
*dev
,
349 uint32_t id
, uint32_t type
)
351 struct drm_mode_object
*obj
= NULL
;
353 mutex_lock(&dev
->mode_config
.idr_mutex
);
354 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
355 if (obj
&& type
!= DRM_MODE_OBJECT_ANY
&& obj
->type
!= type
)
357 if (obj
&& obj
->id
!= id
)
359 /* don't leak out unref'd fb's */
360 if (obj
&& (obj
->type
== DRM_MODE_OBJECT_FB
))
362 mutex_unlock(&dev
->mode_config
.idr_mutex
);
368 * drm_mode_object_find - look up a drm object with static lifetime
370 * @id: id of the mode object
371 * @type: type of the mode object
373 * Note that framebuffers cannot be looked up with this functions - since those
374 * are reference counted, they need special treatment. Even with
375 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
376 * rather than WARN_ON()).
378 struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
379 uint32_t id
, uint32_t type
)
381 struct drm_mode_object
*obj
= NULL
;
383 /* Framebuffers are reference counted and need their own lookup
385 WARN_ON(type
== DRM_MODE_OBJECT_FB
);
386 obj
= _object_find(dev
, id
, type
);
389 EXPORT_SYMBOL(drm_mode_object_find
);
392 * drm_framebuffer_init - initialize a framebuffer
394 * @fb: framebuffer to be initialized
395 * @funcs: ... with these functions
397 * Allocates an ID for the framebuffer's parent mode object, sets its mode
398 * functions & device file and adds it to the master fd list.
401 * This functions publishes the fb and makes it available for concurrent access
402 * by other users. Which means by this point the fb _must_ be fully set up -
403 * since all the fb attributes are invariant over its lifetime, no further
404 * locking but only correct reference counting is required.
407 * Zero on success, error code on failure.
409 int drm_framebuffer_init(struct drm_device
*dev
, struct drm_framebuffer
*fb
,
410 const struct drm_framebuffer_funcs
*funcs
)
414 mutex_lock(&dev
->mode_config
.fb_lock
);
415 kref_init(&fb
->refcount
);
416 INIT_LIST_HEAD(&fb
->filp_head
);
420 ret
= drm_mode_object_get(dev
, &fb
->base
, DRM_MODE_OBJECT_FB
);
424 dev
->mode_config
.num_fb
++;
425 list_add(&fb
->head
, &dev
->mode_config
.fb_list
);
427 mutex_unlock(&dev
->mode_config
.fb_lock
);
431 EXPORT_SYMBOL(drm_framebuffer_init
);
433 /* dev->mode_config.fb_lock must be held! */
434 static void __drm_framebuffer_unregister(struct drm_device
*dev
,
435 struct drm_framebuffer
*fb
)
437 mutex_lock(&dev
->mode_config
.idr_mutex
);
438 idr_remove(&dev
->mode_config
.crtc_idr
, fb
->base
.id
);
439 mutex_unlock(&dev
->mode_config
.idr_mutex
);
444 static void drm_framebuffer_free(struct kref
*kref
)
446 struct drm_framebuffer
*fb
=
447 container_of(kref
, struct drm_framebuffer
, refcount
);
448 struct drm_device
*dev
= fb
->dev
;
451 * The lookup idr holds a weak reference, which has not necessarily been
452 * removed at this point. Check for that.
454 mutex_lock(&dev
->mode_config
.fb_lock
);
456 /* Mark fb as reaped and drop idr ref. */
457 __drm_framebuffer_unregister(dev
, fb
);
459 mutex_unlock(&dev
->mode_config
.fb_lock
);
461 fb
->funcs
->destroy(fb
);
464 static struct drm_framebuffer
*__drm_framebuffer_lookup(struct drm_device
*dev
,
467 struct drm_mode_object
*obj
= NULL
;
468 struct drm_framebuffer
*fb
;
470 mutex_lock(&dev
->mode_config
.idr_mutex
);
471 obj
= idr_find(&dev
->mode_config
.crtc_idr
, id
);
472 if (!obj
|| (obj
->type
!= DRM_MODE_OBJECT_FB
) || (obj
->id
!= id
))
476 mutex_unlock(&dev
->mode_config
.idr_mutex
);
482 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
484 * @id: id of the fb object
486 * If successful, this grabs an additional reference to the framebuffer -
487 * callers need to make sure to eventually unreference the returned framebuffer
488 * again, using @drm_framebuffer_unreference.
490 struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
493 struct drm_framebuffer
*fb
;
495 mutex_lock(&dev
->mode_config
.fb_lock
);
496 fb
= __drm_framebuffer_lookup(dev
, id
);
498 if (!kref_get_unless_zero(&fb
->refcount
))
501 mutex_unlock(&dev
->mode_config
.fb_lock
);
505 EXPORT_SYMBOL(drm_framebuffer_lookup
);
508 * drm_framebuffer_unreference - unref a framebuffer
509 * @fb: framebuffer to unref
511 * This functions decrements the fb's refcount and frees it if it drops to zero.
513 void drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
515 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
516 kref_put(&fb
->refcount
, drm_framebuffer_free
);
518 EXPORT_SYMBOL(drm_framebuffer_unreference
);
521 * drm_framebuffer_reference - incr the fb refcnt
524 * This functions increments the fb's refcount.
526 void drm_framebuffer_reference(struct drm_framebuffer
*fb
)
528 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
529 kref_get(&fb
->refcount
);
531 EXPORT_SYMBOL(drm_framebuffer_reference
);
533 static void drm_framebuffer_free_bug(struct kref
*kref
)
538 static void __drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
540 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb
, fb
->base
.id
, atomic_read(&fb
->refcount
.refcount
));
541 kref_put(&fb
->refcount
, drm_framebuffer_free_bug
);
545 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
546 * @fb: fb to unregister
548 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
549 * those used for fbdev. Note that the caller must hold a reference of it's own,
550 * i.e. the object may not be destroyed through this call (since it'll lead to a
551 * locking inversion).
553 void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
)
555 struct drm_device
*dev
= fb
->dev
;
557 mutex_lock(&dev
->mode_config
.fb_lock
);
558 /* Mark fb as reaped and drop idr ref. */
559 __drm_framebuffer_unregister(dev
, fb
);
560 mutex_unlock(&dev
->mode_config
.fb_lock
);
562 EXPORT_SYMBOL(drm_framebuffer_unregister_private
);
565 * drm_framebuffer_cleanup - remove a framebuffer object
566 * @fb: framebuffer to remove
568 * Cleanup framebuffer. This function is intended to be used from the drivers
569 * ->destroy callback. It can also be used to clean up driver private
570 * framebuffers embedded into a larger structure.
572 * Note that this function does not remove the fb from active usuage - if it is
573 * still used anywhere, hilarity can ensue since userspace could call getfb on
574 * the id and get back -EINVAL. Obviously no concern at driver unload time.
576 * Also, the framebuffer will not be removed from the lookup idr - for
577 * user-created framebuffers this will happen in in the rmfb ioctl. For
578 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
579 * drm_framebuffer_unregister_private.
581 void drm_framebuffer_cleanup(struct drm_framebuffer
*fb
)
583 struct drm_device
*dev
= fb
->dev
;
585 mutex_lock(&dev
->mode_config
.fb_lock
);
587 dev
->mode_config
.num_fb
--;
588 mutex_unlock(&dev
->mode_config
.fb_lock
);
590 EXPORT_SYMBOL(drm_framebuffer_cleanup
);
593 * drm_framebuffer_remove - remove and unreference a framebuffer object
594 * @fb: framebuffer to remove
596 * Scans all the CRTCs and planes in @dev's mode_config. If they're
597 * using @fb, removes it, setting it to NULL. Then drops the reference to the
598 * passed-in framebuffer. Might take the modeset locks.
600 * Note that this function optimizes the cleanup away if the caller holds the
601 * last reference to the framebuffer. It is also guaranteed to not take the
602 * modeset locks in this case.
604 void drm_framebuffer_remove(struct drm_framebuffer
*fb
)
606 struct drm_device
*dev
= fb
->dev
;
607 struct drm_crtc
*crtc
;
608 struct drm_plane
*plane
;
609 struct drm_mode_set set
;
612 WARN_ON(!list_empty(&fb
->filp_head
));
615 * drm ABI mandates that we remove any deleted framebuffers from active
616 * useage. But since most sane clients only remove framebuffers they no
617 * longer need, try to optimize this away.
619 * Since we're holding a reference ourselves, observing a refcount of 1
620 * means that we're the last holder and can skip it. Also, the refcount
621 * can never increase from 1 again, so we don't need any barriers or
624 * Note that userspace could try to race with use and instate a new
625 * usage _after_ we've cleared all current ones. End result will be an
626 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
629 if (atomic_read(&fb
->refcount
.refcount
) > 1) {
630 drm_modeset_lock_all(dev
);
631 /* remove from any CRTC */
632 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
633 if (crtc
->primary
->fb
== fb
) {
634 /* should turn off the crtc */
635 memset(&set
, 0, sizeof(struct drm_mode_set
));
638 ret
= drm_mode_set_config_internal(&set
);
640 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc
);
644 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
) {
646 drm_plane_force_disable(plane
);
648 drm_modeset_unlock_all(dev
);
651 drm_framebuffer_unreference(fb
);
653 EXPORT_SYMBOL(drm_framebuffer_remove
);
655 DEFINE_WW_CLASS(crtc_ww_class
);
658 * drm_crtc_init_with_planes - Initialise a new CRTC object with
659 * specified primary and cursor planes.
661 * @crtc: CRTC object to init
662 * @primary: Primary plane for CRTC
663 * @cursor: Cursor plane for CRTC
664 * @funcs: callbacks for the new CRTC
666 * Inits a new object created as base part of a driver crtc object.
669 * Zero on success, error code on failure.
671 int drm_crtc_init_with_planes(struct drm_device
*dev
, struct drm_crtc
*crtc
,
672 struct drm_plane
*primary
,
673 struct drm_plane
*cursor
,
674 const struct drm_crtc_funcs
*funcs
)
676 struct drm_mode_config
*config
= &dev
->mode_config
;
681 crtc
->invert_dimensions
= false;
683 drm_modeset_lock_init(&crtc
->mutex
);
684 ret
= drm_mode_object_get(dev
, &crtc
->base
, DRM_MODE_OBJECT_CRTC
);
688 crtc
->base
.properties
= &crtc
->properties
;
690 list_add_tail(&crtc
->head
, &config
->crtc_list
);
693 crtc
->primary
= primary
;
694 crtc
->cursor
= cursor
;
696 primary
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
698 cursor
->possible_crtcs
= 1 << drm_crtc_index(crtc
);
702 EXPORT_SYMBOL(drm_crtc_init_with_planes
);
705 * drm_crtc_cleanup - Clean up the core crtc usage
706 * @crtc: CRTC to cleanup
708 * This function cleans up @crtc and removes it from the DRM mode setting
709 * core. Note that the function does *not* free the crtc structure itself,
710 * this is the responsibility of the caller.
712 void drm_crtc_cleanup(struct drm_crtc
*crtc
)
714 struct drm_device
*dev
= crtc
->dev
;
716 kfree(crtc
->gamma_store
);
717 crtc
->gamma_store
= NULL
;
719 drm_modeset_lock_fini(&crtc
->mutex
);
721 drm_mode_object_put(dev
, &crtc
->base
);
722 list_del(&crtc
->head
);
723 dev
->mode_config
.num_crtc
--;
725 WARN_ON(crtc
->state
&& !crtc
->funcs
->atomic_destroy_state
);
726 if (crtc
->state
&& crtc
->funcs
->atomic_destroy_state
)
727 crtc
->funcs
->atomic_destroy_state(crtc
, crtc
->state
);
729 EXPORT_SYMBOL(drm_crtc_cleanup
);
732 * drm_crtc_index - find the index of a registered CRTC
733 * @crtc: CRTC to find index for
735 * Given a registered CRTC, return the index of that CRTC within a DRM
736 * device's list of CRTCs.
738 unsigned int drm_crtc_index(struct drm_crtc
*crtc
)
740 unsigned int index
= 0;
741 struct drm_crtc
*tmp
;
743 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
752 EXPORT_SYMBOL(drm_crtc_index
);
755 * drm_mode_remove - remove and free a mode
756 * @connector: connector list to modify
757 * @mode: mode to remove
759 * Remove @mode from @connector's mode list, then free it.
761 static void drm_mode_remove(struct drm_connector
*connector
,
762 struct drm_display_mode
*mode
)
764 list_del(&mode
->head
);
765 drm_mode_destroy(connector
->dev
, mode
);
769 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
770 * @connector: connector to quwery
772 * The kernel supports per-connector configration of its consoles through
773 * use of the video= parameter. This function parses that option and
774 * extracts the user's specified mode (or enable/disable status) for a
775 * particular connector. This is typically only used during the early fbdev
778 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
780 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
783 if (fb_get_options(connector
->name
, &option
))
786 if (!drm_mode_parse_command_line_for_connector(option
,
794 switch (mode
->force
) {
798 case DRM_FORCE_ON_DIGITAL
:
807 DRM_INFO("forcing %s connector %s\n", connector
->name
, s
);
808 connector
->force
= mode
->force
;
811 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
813 mode
->xres
, mode
->yres
,
814 mode
->refresh_specified
? mode
->refresh
: 60,
815 mode
->rb
? " reduced blanking" : "",
816 mode
->margins
? " with margins" : "",
817 mode
->interlace
? " interlaced" : "");
821 * drm_connector_init - Init a preallocated connector
823 * @connector: the connector to init
824 * @funcs: callbacks for this connector
825 * @connector_type: user visible type of the connector
827 * Initialises a preallocated connector. Connectors should be
828 * subclassed as part of driver connector objects.
831 * Zero on success, error code on failure.
833 int drm_connector_init(struct drm_device
*dev
,
834 struct drm_connector
*connector
,
835 const struct drm_connector_funcs
*funcs
,
839 struct ida
*connector_ida
=
840 &drm_connector_enum_list
[connector_type
].ida
;
842 drm_modeset_lock_all(dev
);
844 ret
= drm_mode_object_get_reg(dev
, &connector
->base
, DRM_MODE_OBJECT_CONNECTOR
, false);
848 connector
->base
.properties
= &connector
->properties
;
849 connector
->dev
= dev
;
850 connector
->funcs
= funcs
;
851 connector
->connector_type
= connector_type
;
852 connector
->connector_type_id
=
853 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
854 if (connector
->connector_type_id
< 0) {
855 ret
= connector
->connector_type_id
;
859 kasprintf(GFP_KERNEL
, "%s-%d",
860 drm_connector_enum_list
[connector_type
].name
,
861 connector
->connector_type_id
);
862 if (!connector
->name
) {
867 INIT_LIST_HEAD(&connector
->probed_modes
);
868 INIT_LIST_HEAD(&connector
->modes
);
869 connector
->edid_blob_ptr
= NULL
;
870 connector
->status
= connector_status_unknown
;
872 drm_connector_get_cmdline_mode(connector
);
874 /* We should add connectors at the end to avoid upsetting the connector
876 list_add_tail(&connector
->head
, &dev
->mode_config
.connector_list
);
877 dev
->mode_config
.num_connector
++;
879 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
880 drm_object_attach_property(&connector
->base
,
881 dev
->mode_config
.edid_property
,
884 drm_object_attach_property(&connector
->base
,
885 dev
->mode_config
.dpms_property
, 0);
887 connector
->debugfs_entry
= NULL
;
891 drm_mode_object_put(dev
, &connector
->base
);
894 drm_modeset_unlock_all(dev
);
898 EXPORT_SYMBOL(drm_connector_init
);
901 * drm_connector_cleanup - cleans up an initialised connector
902 * @connector: connector to cleanup
904 * Cleans up the connector but doesn't free the object.
906 void drm_connector_cleanup(struct drm_connector
*connector
)
908 struct drm_device
*dev
= connector
->dev
;
909 struct drm_display_mode
*mode
, *t
;
911 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
912 drm_mode_remove(connector
, mode
);
914 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
915 drm_mode_remove(connector
, mode
);
917 ida_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
918 connector
->connector_type_id
);
920 drm_mode_object_put(dev
, &connector
->base
);
921 kfree(connector
->name
);
922 connector
->name
= NULL
;
923 list_del(&connector
->head
);
924 dev
->mode_config
.num_connector
--;
926 WARN_ON(connector
->state
&& !connector
->funcs
->atomic_destroy_state
);
927 if (connector
->state
&& connector
->funcs
->atomic_destroy_state
)
928 connector
->funcs
->atomic_destroy_state(connector
,
931 EXPORT_SYMBOL(drm_connector_cleanup
);
934 * drm_connector_index - find the index of a registered connector
935 * @connector: connector to find index for
937 * Given a registered connector, return the index of that connector within a DRM
938 * device's list of connectors.
940 unsigned int drm_connector_index(struct drm_connector
*connector
)
942 unsigned int index
= 0;
943 struct drm_connector
*tmp
;
944 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
946 WARN_ON(!drm_modeset_is_locked(&config
->connection_mutex
));
948 list_for_each_entry(tmp
, &connector
->dev
->mode_config
.connector_list
, head
) {
949 if (tmp
== connector
)
957 EXPORT_SYMBOL(drm_connector_index
);
960 * drm_connector_register - register a connector
961 * @connector: the connector to register
963 * Register userspace interfaces for a connector
966 * Zero on success, error code on failure.
968 int drm_connector_register(struct drm_connector
*connector
)
972 drm_mode_object_register(connector
->dev
, &connector
->base
);
974 ret
= drm_sysfs_connector_add(connector
);
978 ret
= drm_debugfs_connector_add(connector
);
980 drm_sysfs_connector_remove(connector
);
986 EXPORT_SYMBOL(drm_connector_register
);
989 * drm_connector_unregister - unregister a connector
990 * @connector: the connector to unregister
992 * Unregister userspace interfaces for a connector
994 void drm_connector_unregister(struct drm_connector
*connector
)
996 drm_sysfs_connector_remove(connector
);
997 drm_debugfs_connector_remove(connector
);
999 EXPORT_SYMBOL(drm_connector_unregister
);
1003 * drm_connector_unplug_all - unregister connector userspace interfaces
1006 * This function unregisters all connector userspace interfaces in sysfs. Should
1007 * be call when the device is disconnected, e.g. from an usb driver's
1008 * ->disconnect callback.
1010 void drm_connector_unplug_all(struct drm_device
*dev
)
1012 struct drm_connector
*connector
;
1014 /* taking the mode config mutex ends up in a clash with sysfs */
1015 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1016 drm_connector_unregister(connector
);
1019 EXPORT_SYMBOL(drm_connector_unplug_all
);
1022 * drm_bridge_init - initialize a drm transcoder/bridge
1024 * @bridge: transcoder/bridge to set up
1025 * @funcs: bridge function table
1027 * Initialises a preallocated bridge. Bridges should be
1028 * subclassed as part of driver connector objects.
1031 * Zero on success, error code on failure.
1033 int drm_bridge_init(struct drm_device
*dev
, struct drm_bridge
*bridge
,
1034 const struct drm_bridge_funcs
*funcs
)
1038 drm_modeset_lock_all(dev
);
1040 ret
= drm_mode_object_get(dev
, &bridge
->base
, DRM_MODE_OBJECT_BRIDGE
);
1045 bridge
->funcs
= funcs
;
1047 list_add_tail(&bridge
->head
, &dev
->mode_config
.bridge_list
);
1048 dev
->mode_config
.num_bridge
++;
1051 drm_modeset_unlock_all(dev
);
1054 EXPORT_SYMBOL(drm_bridge_init
);
1057 * drm_bridge_cleanup - cleans up an initialised bridge
1058 * @bridge: bridge to cleanup
1060 * Cleans up the bridge but doesn't free the object.
1062 void drm_bridge_cleanup(struct drm_bridge
*bridge
)
1064 struct drm_device
*dev
= bridge
->dev
;
1066 drm_modeset_lock_all(dev
);
1067 drm_mode_object_put(dev
, &bridge
->base
);
1068 list_del(&bridge
->head
);
1069 dev
->mode_config
.num_bridge
--;
1070 drm_modeset_unlock_all(dev
);
1072 EXPORT_SYMBOL(drm_bridge_cleanup
);
1075 * drm_encoder_init - Init a preallocated encoder
1077 * @encoder: the encoder to init
1078 * @funcs: callbacks for this encoder
1079 * @encoder_type: user visible type of the encoder
1081 * Initialises a preallocated encoder. Encoder should be
1082 * subclassed as part of driver encoder objects.
1085 * Zero on success, error code on failure.
1087 int drm_encoder_init(struct drm_device
*dev
,
1088 struct drm_encoder
*encoder
,
1089 const struct drm_encoder_funcs
*funcs
,
1094 drm_modeset_lock_all(dev
);
1096 ret
= drm_mode_object_get(dev
, &encoder
->base
, DRM_MODE_OBJECT_ENCODER
);
1101 encoder
->encoder_type
= encoder_type
;
1102 encoder
->funcs
= funcs
;
1103 encoder
->name
= kasprintf(GFP_KERNEL
, "%s-%d",
1104 drm_encoder_enum_list
[encoder_type
].name
,
1106 if (!encoder
->name
) {
1111 list_add_tail(&encoder
->head
, &dev
->mode_config
.encoder_list
);
1112 dev
->mode_config
.num_encoder
++;
1116 drm_mode_object_put(dev
, &encoder
->base
);
1119 drm_modeset_unlock_all(dev
);
1123 EXPORT_SYMBOL(drm_encoder_init
);
1126 * drm_encoder_cleanup - cleans up an initialised encoder
1127 * @encoder: encoder to cleanup
1129 * Cleans up the encoder but doesn't free the object.
1131 void drm_encoder_cleanup(struct drm_encoder
*encoder
)
1133 struct drm_device
*dev
= encoder
->dev
;
1134 drm_modeset_lock_all(dev
);
1135 drm_mode_object_put(dev
, &encoder
->base
);
1136 kfree(encoder
->name
);
1137 encoder
->name
= NULL
;
1138 list_del(&encoder
->head
);
1139 dev
->mode_config
.num_encoder
--;
1140 drm_modeset_unlock_all(dev
);
1142 EXPORT_SYMBOL(drm_encoder_cleanup
);
1145 * drm_universal_plane_init - Initialize a new universal plane object
1147 * @plane: plane object to init
1148 * @possible_crtcs: bitmask of possible CRTCs
1149 * @funcs: callbacks for the new plane
1150 * @formats: array of supported formats (%DRM_FORMAT_*)
1151 * @format_count: number of elements in @formats
1152 * @type: type of plane (overlay, primary, cursor)
1154 * Initializes a plane object of type @type.
1157 * Zero on success, error code on failure.
1159 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1160 unsigned long possible_crtcs
,
1161 const struct drm_plane_funcs
*funcs
,
1162 const uint32_t *formats
, uint32_t format_count
,
1163 enum drm_plane_type type
)
1167 ret
= drm_mode_object_get(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
1171 drm_modeset_lock_init(&plane
->mutex
);
1173 plane
->base
.properties
= &plane
->properties
;
1175 plane
->funcs
= funcs
;
1176 plane
->format_types
= kmalloc(sizeof(uint32_t) * format_count
,
1178 if (!plane
->format_types
) {
1179 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1180 drm_mode_object_put(dev
, &plane
->base
);
1184 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
1185 plane
->format_count
= format_count
;
1186 plane
->possible_crtcs
= possible_crtcs
;
1189 list_add_tail(&plane
->head
, &dev
->mode_config
.plane_list
);
1190 dev
->mode_config
.num_total_plane
++;
1191 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1192 dev
->mode_config
.num_overlay_plane
++;
1194 drm_object_attach_property(&plane
->base
,
1195 dev
->mode_config
.plane_type_property
,
1200 EXPORT_SYMBOL(drm_universal_plane_init
);
1203 * drm_plane_init - Initialize a legacy plane
1205 * @plane: plane object to init
1206 * @possible_crtcs: bitmask of possible CRTCs
1207 * @funcs: callbacks for the new plane
1208 * @formats: array of supported formats (%DRM_FORMAT_*)
1209 * @format_count: number of elements in @formats
1210 * @is_primary: plane type (primary vs overlay)
1212 * Legacy API to initialize a DRM plane.
1214 * New drivers should call drm_universal_plane_init() instead.
1217 * Zero on success, error code on failure.
1219 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
1220 unsigned long possible_crtcs
,
1221 const struct drm_plane_funcs
*funcs
,
1222 const uint32_t *formats
, uint32_t format_count
,
1225 enum drm_plane_type type
;
1227 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
1228 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
1229 formats
, format_count
, type
);
1231 EXPORT_SYMBOL(drm_plane_init
);
1234 * drm_plane_cleanup - Clean up the core plane usage
1235 * @plane: plane to cleanup
1237 * This function cleans up @plane and removes it from the DRM mode setting
1238 * core. Note that the function does *not* free the plane structure itself,
1239 * this is the responsibility of the caller.
1241 void drm_plane_cleanup(struct drm_plane
*plane
)
1243 struct drm_device
*dev
= plane
->dev
;
1245 drm_modeset_lock_all(dev
);
1246 kfree(plane
->format_types
);
1247 drm_mode_object_put(dev
, &plane
->base
);
1249 BUG_ON(list_empty(&plane
->head
));
1251 list_del(&plane
->head
);
1252 dev
->mode_config
.num_total_plane
--;
1253 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
1254 dev
->mode_config
.num_overlay_plane
--;
1255 drm_modeset_unlock_all(dev
);
1257 WARN_ON(plane
->state
&& !plane
->funcs
->atomic_destroy_state
);
1258 if (plane
->state
&& plane
->funcs
->atomic_destroy_state
)
1259 plane
->funcs
->atomic_destroy_state(plane
, plane
->state
);
1261 EXPORT_SYMBOL(drm_plane_cleanup
);
1264 * drm_plane_index - find the index of a registered plane
1265 * @plane: plane to find index for
1267 * Given a registered plane, return the index of that CRTC within a DRM
1268 * device's list of planes.
1270 unsigned int drm_plane_index(struct drm_plane
*plane
)
1272 unsigned int index
= 0;
1273 struct drm_plane
*tmp
;
1275 list_for_each_entry(tmp
, &plane
->dev
->mode_config
.plane_list
, head
) {
1284 EXPORT_SYMBOL(drm_plane_index
);
1287 * drm_plane_force_disable - Forcibly disable a plane
1288 * @plane: plane to disable
1290 * Forces the plane to be disabled.
1292 * Used when the plane's current framebuffer is destroyed,
1293 * and when restoring fbdev mode.
1295 void drm_plane_force_disable(struct drm_plane
*plane
)
1302 plane
->old_fb
= plane
->fb
;
1303 ret
= plane
->funcs
->disable_plane(plane
);
1305 DRM_ERROR("failed to disable plane with busy fb\n");
1306 plane
->old_fb
= NULL
;
1309 /* disconnect the plane from the fb and crtc: */
1310 __drm_framebuffer_unreference(plane
->old_fb
);
1311 plane
->old_fb
= NULL
;
1315 EXPORT_SYMBOL(drm_plane_force_disable
);
1317 static int drm_mode_create_standard_connector_properties(struct drm_device
*dev
)
1319 struct drm_property
*edid
;
1320 struct drm_property
*dpms
;
1321 struct drm_property
*dev_path
;
1324 * Standard properties (apply to all connectors)
1326 edid
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
1327 DRM_MODE_PROP_IMMUTABLE
,
1329 dev
->mode_config
.edid_property
= edid
;
1331 dpms
= drm_property_create_enum(dev
, 0,
1332 "DPMS", drm_dpms_enum_list
,
1333 ARRAY_SIZE(drm_dpms_enum_list
));
1334 dev
->mode_config
.dpms_property
= dpms
;
1336 dev_path
= drm_property_create(dev
,
1337 DRM_MODE_PROP_BLOB
|
1338 DRM_MODE_PROP_IMMUTABLE
,
1340 dev
->mode_config
.path_property
= dev_path
;
1345 static int drm_mode_create_standard_plane_properties(struct drm_device
*dev
)
1347 struct drm_property
*type
;
1350 * Standard properties (apply to all planes)
1352 type
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1353 "type", drm_plane_type_enum_list
,
1354 ARRAY_SIZE(drm_plane_type_enum_list
));
1355 dev
->mode_config
.plane_type_property
= type
;
1361 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1364 * Called by a driver the first time a DVI-I connector is made.
1366 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1368 struct drm_property
*dvi_i_selector
;
1369 struct drm_property
*dvi_i_subconnector
;
1371 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1375 drm_property_create_enum(dev
, 0,
1376 "select subconnector",
1377 drm_dvi_i_select_enum_list
,
1378 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1379 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1381 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1383 drm_dvi_i_subconnector_enum_list
,
1384 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1385 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1389 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1392 * drm_create_tv_properties - create TV specific connector properties
1394 * @num_modes: number of different TV formats (modes) supported
1395 * @modes: array of pointers to strings containing name of each format
1397 * Called by a driver's TV initialization routine, this function creates
1398 * the TV specific connector properties for a given device. Caller is
1399 * responsible for allocating a list of format names and passing them to
1402 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1403 unsigned int num_modes
,
1406 struct drm_property
*tv_selector
;
1407 struct drm_property
*tv_subconnector
;
1410 if (dev
->mode_config
.tv_select_subconnector_property
)
1414 * Basic connector properties
1416 tv_selector
= drm_property_create_enum(dev
, 0,
1417 "select subconnector",
1418 drm_tv_select_enum_list
,
1419 ARRAY_SIZE(drm_tv_select_enum_list
));
1420 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1423 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1425 drm_tv_subconnector_enum_list
,
1426 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1427 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1430 * Other, TV specific properties: margins & TV modes.
1432 dev
->mode_config
.tv_left_margin_property
=
1433 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1435 dev
->mode_config
.tv_right_margin_property
=
1436 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1438 dev
->mode_config
.tv_top_margin_property
=
1439 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1441 dev
->mode_config
.tv_bottom_margin_property
=
1442 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1444 dev
->mode_config
.tv_mode_property
=
1445 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1447 for (i
= 0; i
< num_modes
; i
++)
1448 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
1451 dev
->mode_config
.tv_brightness_property
=
1452 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1454 dev
->mode_config
.tv_contrast_property
=
1455 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1457 dev
->mode_config
.tv_flicker_reduction_property
=
1458 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1460 dev
->mode_config
.tv_overscan_property
=
1461 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1463 dev
->mode_config
.tv_saturation_property
=
1464 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1466 dev
->mode_config
.tv_hue_property
=
1467 drm_property_create_range(dev
, 0, "hue", 0, 100);
1471 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1474 * drm_mode_create_scaling_mode_property - create scaling mode property
1477 * Called by a driver the first time it's needed, must be attached to desired
1480 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1482 struct drm_property
*scaling_mode
;
1484 if (dev
->mode_config
.scaling_mode_property
)
1488 drm_property_create_enum(dev
, 0, "scaling mode",
1489 drm_scaling_mode_enum_list
,
1490 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1492 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1496 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1499 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1502 * Called by a driver the first time it's needed, must be attached to desired
1506 * Zero on success, negative errno on failure.
1508 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1510 if (dev
->mode_config
.aspect_ratio_property
)
1513 dev
->mode_config
.aspect_ratio_property
=
1514 drm_property_create_enum(dev
, 0, "aspect ratio",
1515 drm_aspect_ratio_enum_list
,
1516 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1518 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1523 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1526 * drm_mode_create_dirty_property - create dirty property
1529 * Called by a driver the first time it's needed, must be attached to desired
1532 int drm_mode_create_dirty_info_property(struct drm_device
*dev
)
1534 struct drm_property
*dirty_info
;
1536 if (dev
->mode_config
.dirty_info_property
)
1540 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1542 drm_dirty_info_enum_list
,
1543 ARRAY_SIZE(drm_dirty_info_enum_list
));
1544 dev
->mode_config
.dirty_info_property
= dirty_info
;
1548 EXPORT_SYMBOL(drm_mode_create_dirty_info_property
);
1551 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1554 * Create the the suggested x/y offset property for connectors.
1556 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1558 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1561 dev
->mode_config
.suggested_x_property
=
1562 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1564 dev
->mode_config
.suggested_y_property
=
1565 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1567 if (dev
->mode_config
.suggested_x_property
== NULL
||
1568 dev
->mode_config
.suggested_y_property
== NULL
)
1572 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1574 static int drm_mode_group_init(struct drm_device
*dev
, struct drm_mode_group
*group
)
1576 uint32_t total_objects
= 0;
1578 total_objects
+= dev
->mode_config
.num_crtc
;
1579 total_objects
+= dev
->mode_config
.num_connector
;
1580 total_objects
+= dev
->mode_config
.num_encoder
;
1581 total_objects
+= dev
->mode_config
.num_bridge
;
1583 group
->id_list
= kzalloc(total_objects
* sizeof(uint32_t), GFP_KERNEL
);
1584 if (!group
->id_list
)
1587 group
->num_crtcs
= 0;
1588 group
->num_connectors
= 0;
1589 group
->num_encoders
= 0;
1590 group
->num_bridges
= 0;
1594 void drm_mode_group_destroy(struct drm_mode_group
*group
)
1596 kfree(group
->id_list
);
1597 group
->id_list
= NULL
;
1601 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1602 * the drm core's responsibility to set up mode control groups.
1604 int drm_mode_group_init_legacy_group(struct drm_device
*dev
,
1605 struct drm_mode_group
*group
)
1607 struct drm_crtc
*crtc
;
1608 struct drm_encoder
*encoder
;
1609 struct drm_connector
*connector
;
1610 struct drm_bridge
*bridge
;
1613 if ((ret
= drm_mode_group_init(dev
, group
)))
1616 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
1617 group
->id_list
[group
->num_crtcs
++] = crtc
->base
.id
;
1619 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
1620 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
++] =
1623 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
1624 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1625 group
->num_connectors
++] = connector
->base
.id
;
1627 list_for_each_entry(bridge
, &dev
->mode_config
.bridge_list
, head
)
1628 group
->id_list
[group
->num_crtcs
+ group
->num_encoders
+
1629 group
->num_connectors
+ group
->num_bridges
++] =
1634 EXPORT_SYMBOL(drm_mode_group_init_legacy_group
);
1636 void drm_reinit_primary_mode_group(struct drm_device
*dev
)
1638 drm_modeset_lock_all(dev
);
1639 drm_mode_group_destroy(&dev
->primary
->mode_group
);
1640 drm_mode_group_init_legacy_group(dev
, &dev
->primary
->mode_group
);
1641 drm_modeset_unlock_all(dev
);
1643 EXPORT_SYMBOL(drm_reinit_primary_mode_group
);
1646 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1647 * @out: drm_mode_modeinfo struct to return to the user
1648 * @in: drm_display_mode to use
1650 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1653 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo
*out
,
1654 const struct drm_display_mode
*in
)
1656 WARN(in
->hdisplay
> USHRT_MAX
|| in
->hsync_start
> USHRT_MAX
||
1657 in
->hsync_end
> USHRT_MAX
|| in
->htotal
> USHRT_MAX
||
1658 in
->hskew
> USHRT_MAX
|| in
->vdisplay
> USHRT_MAX
||
1659 in
->vsync_start
> USHRT_MAX
|| in
->vsync_end
> USHRT_MAX
||
1660 in
->vtotal
> USHRT_MAX
|| in
->vscan
> USHRT_MAX
,
1661 "timing values too large for mode info\n");
1663 out
->clock
= in
->clock
;
1664 out
->hdisplay
= in
->hdisplay
;
1665 out
->hsync_start
= in
->hsync_start
;
1666 out
->hsync_end
= in
->hsync_end
;
1667 out
->htotal
= in
->htotal
;
1668 out
->hskew
= in
->hskew
;
1669 out
->vdisplay
= in
->vdisplay
;
1670 out
->vsync_start
= in
->vsync_start
;
1671 out
->vsync_end
= in
->vsync_end
;
1672 out
->vtotal
= in
->vtotal
;
1673 out
->vscan
= in
->vscan
;
1674 out
->vrefresh
= in
->vrefresh
;
1675 out
->flags
= in
->flags
;
1676 out
->type
= in
->type
;
1677 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1678 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1682 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1683 * @out: drm_display_mode to return to the user
1684 * @in: drm_mode_modeinfo to use
1686 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1690 * Zero on success, negative errno on failure.
1692 static int drm_crtc_convert_umode(struct drm_display_mode
*out
,
1693 const struct drm_mode_modeinfo
*in
)
1695 if (in
->clock
> INT_MAX
|| in
->vrefresh
> INT_MAX
)
1698 if ((in
->flags
& DRM_MODE_FLAG_3D_MASK
) > DRM_MODE_FLAG_3D_MAX
)
1701 out
->clock
= in
->clock
;
1702 out
->hdisplay
= in
->hdisplay
;
1703 out
->hsync_start
= in
->hsync_start
;
1704 out
->hsync_end
= in
->hsync_end
;
1705 out
->htotal
= in
->htotal
;
1706 out
->hskew
= in
->hskew
;
1707 out
->vdisplay
= in
->vdisplay
;
1708 out
->vsync_start
= in
->vsync_start
;
1709 out
->vsync_end
= in
->vsync_end
;
1710 out
->vtotal
= in
->vtotal
;
1711 out
->vscan
= in
->vscan
;
1712 out
->vrefresh
= in
->vrefresh
;
1713 out
->flags
= in
->flags
;
1714 out
->type
= in
->type
;
1715 strncpy(out
->name
, in
->name
, DRM_DISPLAY_MODE_LEN
);
1716 out
->name
[DRM_DISPLAY_MODE_LEN
-1] = 0;
1722 * drm_mode_getresources - get graphics configuration
1723 * @dev: drm device for the ioctl
1724 * @data: data pointer for the ioctl
1725 * @file_priv: drm file for the ioctl call
1727 * Construct a set of configuration description structures and return
1728 * them to the user, including CRTC, connector and framebuffer configuration.
1730 * Called by the user via ioctl.
1733 * Zero on success, negative errno on failure.
1735 int drm_mode_getresources(struct drm_device
*dev
, void *data
,
1736 struct drm_file
*file_priv
)
1738 struct drm_mode_card_res
*card_res
= data
;
1739 struct list_head
*lh
;
1740 struct drm_framebuffer
*fb
;
1741 struct drm_connector
*connector
;
1742 struct drm_crtc
*crtc
;
1743 struct drm_encoder
*encoder
;
1745 int connector_count
= 0;
1748 int encoder_count
= 0;
1750 uint32_t __user
*fb_id
;
1751 uint32_t __user
*crtc_id
;
1752 uint32_t __user
*connector_id
;
1753 uint32_t __user
*encoder_id
;
1754 struct drm_mode_group
*mode_group
;
1756 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1760 mutex_lock(&file_priv
->fbs_lock
);
1762 * For the non-control nodes we need to limit the list of resources
1763 * by IDs in the group list for this node
1765 list_for_each(lh
, &file_priv
->fbs
)
1768 /* handle this in 4 parts */
1770 if (card_res
->count_fbs
>= fb_count
) {
1772 fb_id
= (uint32_t __user
*)(unsigned long)card_res
->fb_id_ptr
;
1773 list_for_each_entry(fb
, &file_priv
->fbs
, filp_head
) {
1774 if (put_user(fb
->base
.id
, fb_id
+ copied
)) {
1775 mutex_unlock(&file_priv
->fbs_lock
);
1781 card_res
->count_fbs
= fb_count
;
1782 mutex_unlock(&file_priv
->fbs_lock
);
1784 /* mode_config.mutex protects the connector list against e.g. DP MST
1785 * connector hot-adding. CRTC/Plane lists are invariant. */
1786 mutex_lock(&dev
->mode_config
.mutex
);
1787 if (!drm_is_primary_client(file_priv
)) {
1790 list_for_each(lh
, &dev
->mode_config
.crtc_list
)
1793 list_for_each(lh
, &dev
->mode_config
.connector_list
)
1796 list_for_each(lh
, &dev
->mode_config
.encoder_list
)
1800 mode_group
= &file_priv
->master
->minor
->mode_group
;
1801 crtc_count
= mode_group
->num_crtcs
;
1802 connector_count
= mode_group
->num_connectors
;
1803 encoder_count
= mode_group
->num_encoders
;
1806 card_res
->max_height
= dev
->mode_config
.max_height
;
1807 card_res
->min_height
= dev
->mode_config
.min_height
;
1808 card_res
->max_width
= dev
->mode_config
.max_width
;
1809 card_res
->min_width
= dev
->mode_config
.min_width
;
1812 if (card_res
->count_crtcs
>= crtc_count
) {
1814 crtc_id
= (uint32_t __user
*)(unsigned long)card_res
->crtc_id_ptr
;
1816 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
,
1818 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
1819 if (put_user(crtc
->base
.id
, crtc_id
+ copied
)) {
1826 for (i
= 0; i
< mode_group
->num_crtcs
; i
++) {
1827 if (put_user(mode_group
->id_list
[i
],
1828 crtc_id
+ copied
)) {
1836 card_res
->count_crtcs
= crtc_count
;
1839 if (card_res
->count_encoders
>= encoder_count
) {
1841 encoder_id
= (uint32_t __user
*)(unsigned long)card_res
->encoder_id_ptr
;
1843 list_for_each_entry(encoder
,
1844 &dev
->mode_config
.encoder_list
,
1846 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder
->base
.id
,
1848 if (put_user(encoder
->base
.id
, encoder_id
+
1856 for (i
= mode_group
->num_crtcs
; i
< mode_group
->num_crtcs
+ mode_group
->num_encoders
; i
++) {
1857 if (put_user(mode_group
->id_list
[i
],
1858 encoder_id
+ copied
)) {
1867 card_res
->count_encoders
= encoder_count
;
1870 if (card_res
->count_connectors
>= connector_count
) {
1872 connector_id
= (uint32_t __user
*)(unsigned long)card_res
->connector_id_ptr
;
1874 list_for_each_entry(connector
,
1875 &dev
->mode_config
.connector_list
,
1877 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1880 if (put_user(connector
->base
.id
,
1881 connector_id
+ copied
)) {
1888 int start
= mode_group
->num_crtcs
+
1889 mode_group
->num_encoders
;
1890 for (i
= start
; i
< start
+ mode_group
->num_connectors
; i
++) {
1891 if (put_user(mode_group
->id_list
[i
],
1892 connector_id
+ copied
)) {
1900 card_res
->count_connectors
= connector_count
;
1902 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res
->count_crtcs
,
1903 card_res
->count_connectors
, card_res
->count_encoders
);
1906 mutex_unlock(&dev
->mode_config
.mutex
);
1911 * drm_mode_getcrtc - get CRTC configuration
1912 * @dev: drm device for the ioctl
1913 * @data: data pointer for the ioctl
1914 * @file_priv: drm file for the ioctl call
1916 * Construct a CRTC configuration structure to return to the user.
1918 * Called by the user via ioctl.
1921 * Zero on success, negative errno on failure.
1923 int drm_mode_getcrtc(struct drm_device
*dev
,
1924 void *data
, struct drm_file
*file_priv
)
1926 struct drm_mode_crtc
*crtc_resp
= data
;
1927 struct drm_crtc
*crtc
;
1929 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1932 crtc
= drm_crtc_find(dev
, crtc_resp
->crtc_id
);
1936 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
1937 crtc_resp
->x
= crtc
->x
;
1938 crtc_resp
->y
= crtc
->y
;
1939 crtc_resp
->gamma_size
= crtc
->gamma_size
;
1940 if (crtc
->primary
->fb
)
1941 crtc_resp
->fb_id
= crtc
->primary
->fb
->base
.id
;
1943 crtc_resp
->fb_id
= 0;
1945 if (crtc
->enabled
) {
1947 drm_crtc_convert_to_umode(&crtc_resp
->mode
, &crtc
->mode
);
1948 crtc_resp
->mode_valid
= 1;
1951 crtc_resp
->mode_valid
= 0;
1953 drm_modeset_unlock_crtc(crtc
);
1958 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1959 const struct drm_file
*file_priv
)
1962 * If user-space hasn't configured the driver to expose the stereo 3D
1963 * modes, don't expose them.
1965 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
1972 * drm_mode_getconnector - get connector configuration
1973 * @dev: drm device for the ioctl
1974 * @data: data pointer for the ioctl
1975 * @file_priv: drm file for the ioctl call
1977 * Construct a connector configuration structure to return to the user.
1979 * Called by the user via ioctl.
1982 * Zero on success, negative errno on failure.
1984 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
1985 struct drm_file
*file_priv
)
1987 struct drm_mode_get_connector
*out_resp
= data
;
1988 struct drm_connector
*connector
;
1989 struct drm_display_mode
*mode
;
1991 int props_count
= 0;
1992 int encoders_count
= 0;
1996 struct drm_mode_modeinfo u_mode
;
1997 struct drm_mode_modeinfo __user
*mode_ptr
;
1998 uint32_t __user
*prop_ptr
;
1999 uint64_t __user
*prop_values
;
2000 uint32_t __user
*encoder_ptr
;
2002 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2005 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
2007 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
2009 mutex_lock(&dev
->mode_config
.mutex
);
2011 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
2017 props_count
= connector
->properties
.count
;
2019 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2020 if (connector
->encoder_ids
[i
] != 0) {
2025 if (out_resp
->count_modes
== 0) {
2026 connector
->funcs
->fill_modes(connector
,
2027 dev
->mode_config
.max_width
,
2028 dev
->mode_config
.max_height
);
2031 /* delayed so we get modes regardless of pre-fill_modes state */
2032 list_for_each_entry(mode
, &connector
->modes
, head
)
2033 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2036 out_resp
->connector_id
= connector
->base
.id
;
2037 out_resp
->connector_type
= connector
->connector_type
;
2038 out_resp
->connector_type_id
= connector
->connector_type_id
;
2039 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2040 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2041 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2042 out_resp
->connection
= connector
->status
;
2043 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2044 if (connector
->encoder
)
2045 out_resp
->encoder_id
= connector
->encoder
->base
.id
;
2047 out_resp
->encoder_id
= 0;
2048 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2051 * This ioctl is called twice, once to determine how much space is
2052 * needed, and the 2nd time to fill it.
2054 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2056 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2057 list_for_each_entry(mode
, &connector
->modes
, head
) {
2058 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2061 drm_crtc_convert_to_umode(&u_mode
, mode
);
2062 if (copy_to_user(mode_ptr
+ copied
,
2063 &u_mode
, sizeof(u_mode
))) {
2070 out_resp
->count_modes
= mode_count
;
2072 if ((out_resp
->count_props
>= props_count
) && props_count
) {
2074 prop_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
);
2075 prop_values
= (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
);
2076 for (i
= 0; i
< connector
->properties
.count
; i
++) {
2077 if (put_user(connector
->properties
.ids
[i
],
2078 prop_ptr
+ copied
)) {
2083 if (put_user(connector
->properties
.values
[i
],
2084 prop_values
+ copied
)) {
2091 out_resp
->count_props
= props_count
;
2093 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2095 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2096 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2097 if (connector
->encoder_ids
[i
] != 0) {
2098 if (put_user(connector
->encoder_ids
[i
],
2099 encoder_ptr
+ copied
)) {
2107 out_resp
->count_encoders
= encoders_count
;
2110 mutex_unlock(&dev
->mode_config
.mutex
);
2116 * drm_mode_getencoder - get encoder configuration
2117 * @dev: drm device for the ioctl
2118 * @data: data pointer for the ioctl
2119 * @file_priv: drm file for the ioctl call
2121 * Construct a encoder configuration structure to return to the user.
2123 * Called by the user via ioctl.
2126 * Zero on success, negative errno on failure.
2128 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2129 struct drm_file
*file_priv
)
2131 struct drm_mode_get_encoder
*enc_resp
= data
;
2132 struct drm_encoder
*encoder
;
2134 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2137 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2141 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2143 enc_resp
->crtc_id
= encoder
->crtc
->base
.id
;
2145 enc_resp
->crtc_id
= 0;
2146 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2148 enc_resp
->encoder_type
= encoder
->encoder_type
;
2149 enc_resp
->encoder_id
= encoder
->base
.id
;
2150 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2151 enc_resp
->possible_clones
= encoder
->possible_clones
;
2157 * drm_mode_getplane_res - enumerate all plane resources
2160 * @file_priv: DRM file info
2162 * Construct a list of plane ids to return to the user.
2164 * Called by the user via ioctl.
2167 * Zero on success, negative errno on failure.
2169 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2170 struct drm_file
*file_priv
)
2172 struct drm_mode_get_plane_res
*plane_resp
= data
;
2173 struct drm_mode_config
*config
;
2174 struct drm_plane
*plane
;
2175 uint32_t __user
*plane_ptr
;
2177 unsigned num_planes
;
2179 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2182 config
= &dev
->mode_config
;
2184 if (file_priv
->universal_planes
)
2185 num_planes
= config
->num_total_plane
;
2187 num_planes
= config
->num_overlay_plane
;
2190 * This ioctl is called twice, once to determine how much space is
2191 * needed, and the 2nd time to fill it.
2194 (plane_resp
->count_planes
>= num_planes
)) {
2195 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2197 /* Plane lists are invariant, no locking needed. */
2198 list_for_each_entry(plane
, &config
->plane_list
, head
) {
2200 * Unless userspace set the 'universal planes'
2201 * capability bit, only advertise overlays.
2203 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2204 !file_priv
->universal_planes
)
2207 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2212 plane_resp
->count_planes
= num_planes
;
2218 * drm_mode_getplane - get plane configuration
2221 * @file_priv: DRM file info
2223 * Construct a plane configuration structure to return to the user.
2225 * Called by the user via ioctl.
2228 * Zero on success, negative errno on failure.
2230 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2231 struct drm_file
*file_priv
)
2233 struct drm_mode_get_plane
*plane_resp
= data
;
2234 struct drm_plane
*plane
;
2235 uint32_t __user
*format_ptr
;
2237 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2240 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2244 drm_modeset_lock(&plane
->mutex
, NULL
);
2246 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2248 plane_resp
->crtc_id
= 0;
2251 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2253 plane_resp
->fb_id
= 0;
2254 drm_modeset_unlock(&plane
->mutex
);
2256 plane_resp
->plane_id
= plane
->base
.id
;
2257 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2258 plane_resp
->gamma_size
= 0;
2261 * This ioctl is called twice, once to determine how much space is
2262 * needed, and the 2nd time to fill it.
2264 if (plane
->format_count
&&
2265 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2266 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2267 if (copy_to_user(format_ptr
,
2268 plane
->format_types
,
2269 sizeof(uint32_t) * plane
->format_count
)) {
2273 plane_resp
->count_format_types
= plane
->format_count
;
2279 * setplane_internal - setplane handler for internal callers
2281 * Note that we assume an extra reference has already been taken on fb. If the
2282 * update fails, this reference will be dropped before return; if it succeeds,
2283 * the previous framebuffer (if any) will be unreferenced instead.
2285 * src_{x,y,w,h} are provided in 16.16 fixed point format
2287 static int __setplane_internal(struct drm_plane
*plane
,
2288 struct drm_crtc
*crtc
,
2289 struct drm_framebuffer
*fb
,
2290 int32_t crtc_x
, int32_t crtc_y
,
2291 uint32_t crtc_w
, uint32_t crtc_h
,
2292 /* src_{x,y,w,h} values are 16.16 fixed point */
2293 uint32_t src_x
, uint32_t src_y
,
2294 uint32_t src_w
, uint32_t src_h
)
2297 unsigned int fb_width
, fb_height
;
2300 /* No fb means shut it down */
2302 plane
->old_fb
= plane
->fb
;
2303 ret
= plane
->funcs
->disable_plane(plane
);
2308 plane
->old_fb
= NULL
;
2313 /* Check whether this plane is usable on this CRTC */
2314 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2315 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2320 /* Check whether this plane supports the fb pixel format. */
2321 for (i
= 0; i
< plane
->format_count
; i
++)
2322 if (fb
->pixel_format
== plane
->format_types
[i
])
2324 if (i
== plane
->format_count
) {
2325 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2326 drm_get_format_name(fb
->pixel_format
));
2331 fb_width
= fb
->width
<< 16;
2332 fb_height
= fb
->height
<< 16;
2334 /* Make sure source coordinates are inside the fb. */
2335 if (src_w
> fb_width
||
2336 src_x
> fb_width
- src_w
||
2337 src_h
> fb_height
||
2338 src_y
> fb_height
- src_h
) {
2339 DRM_DEBUG_KMS("Invalid source coordinates "
2340 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2341 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2342 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2343 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2344 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2349 plane
->old_fb
= plane
->fb
;
2350 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2351 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2352 src_x
, src_y
, src_w
, src_h
);
2358 plane
->old_fb
= NULL
;
2363 drm_framebuffer_unreference(fb
);
2365 drm_framebuffer_unreference(plane
->old_fb
);
2366 plane
->old_fb
= NULL
;
2371 static int setplane_internal(struct drm_plane
*plane
,
2372 struct drm_crtc
*crtc
,
2373 struct drm_framebuffer
*fb
,
2374 int32_t crtc_x
, int32_t crtc_y
,
2375 uint32_t crtc_w
, uint32_t crtc_h
,
2376 /* src_{x,y,w,h} values are 16.16 fixed point */
2377 uint32_t src_x
, uint32_t src_y
,
2378 uint32_t src_w
, uint32_t src_h
)
2382 drm_modeset_lock_all(plane
->dev
);
2383 ret
= __setplane_internal(plane
, crtc
, fb
,
2384 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2385 src_x
, src_y
, src_w
, src_h
);
2386 drm_modeset_unlock_all(plane
->dev
);
2392 * drm_mode_setplane - configure a plane's configuration
2394 * @data: ioctl data*
2395 * @file_priv: DRM file info
2397 * Set plane configuration, including placement, fb, scaling, and other factors.
2398 * Or pass a NULL fb to disable (planes may be disabled without providing a
2402 * Zero on success, negative errno on failure.
2404 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2405 struct drm_file
*file_priv
)
2407 struct drm_mode_set_plane
*plane_req
= data
;
2408 struct drm_plane
*plane
;
2409 struct drm_crtc
*crtc
= NULL
;
2410 struct drm_framebuffer
*fb
= NULL
;
2412 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2415 /* Give drivers some help against integer overflows */
2416 if (plane_req
->crtc_w
> INT_MAX
||
2417 plane_req
->crtc_x
> INT_MAX
- (int32_t) plane_req
->crtc_w
||
2418 plane_req
->crtc_h
> INT_MAX
||
2419 plane_req
->crtc_y
> INT_MAX
- (int32_t) plane_req
->crtc_h
) {
2420 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2421 plane_req
->crtc_w
, plane_req
->crtc_h
,
2422 plane_req
->crtc_x
, plane_req
->crtc_y
);
2427 * First, find the plane, crtc, and fb objects. If not available,
2428 * we don't bother to call the driver.
2430 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
2432 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2433 plane_req
->plane_id
);
2437 if (plane_req
->fb_id
) {
2438 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2440 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2445 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
2447 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2448 plane_req
->crtc_id
);
2454 * setplane_internal will take care of deref'ing either the old or new
2455 * framebuffer depending on success.
2457 return setplane_internal(plane
, crtc
, fb
,
2458 plane_req
->crtc_x
, plane_req
->crtc_y
,
2459 plane_req
->crtc_w
, plane_req
->crtc_h
,
2460 plane_req
->src_x
, plane_req
->src_y
,
2461 plane_req
->src_w
, plane_req
->src_h
);
2465 * drm_mode_set_config_internal - helper to call ->set_config
2466 * @set: modeset config to set
2468 * This is a little helper to wrap internal calls to the ->set_config driver
2469 * interface. The only thing it adds is correct refcounting dance.
2472 * Zero on success, negative errno on failure.
2474 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2476 struct drm_crtc
*crtc
= set
->crtc
;
2477 struct drm_framebuffer
*fb
;
2478 struct drm_crtc
*tmp
;
2482 * NOTE: ->set_config can also disable other crtcs (if we steal all
2483 * connectors from it), hence we need to refcount the fbs across all
2484 * crtcs. Atomic modeset will have saner semantics ...
2486 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
)
2487 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2491 ret
= crtc
->funcs
->set_config(set
);
2493 crtc
->primary
->crtc
= crtc
;
2494 crtc
->primary
->fb
= fb
;
2497 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
2498 if (tmp
->primary
->fb
)
2499 drm_framebuffer_reference(tmp
->primary
->fb
);
2500 if (tmp
->primary
->old_fb
)
2501 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2502 tmp
->primary
->old_fb
= NULL
;
2507 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2510 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2512 * @crtc: CRTC that framebuffer will be displayed on
2515 * @mode: mode that framebuffer will be displayed under
2516 * @fb: framebuffer to check size of
2518 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2520 const struct drm_display_mode
*mode
,
2521 const struct drm_framebuffer
*fb
)
2524 int hdisplay
, vdisplay
;
2526 hdisplay
= mode
->hdisplay
;
2527 vdisplay
= mode
->vdisplay
;
2529 if (drm_mode_is_stereo(mode
)) {
2530 struct drm_display_mode adjusted
= *mode
;
2532 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE
);
2533 hdisplay
= adjusted
.crtc_hdisplay
;
2534 vdisplay
= adjusted
.crtc_vdisplay
;
2537 if (crtc
->invert_dimensions
)
2538 swap(hdisplay
, vdisplay
);
2540 if (hdisplay
> fb
->width
||
2541 vdisplay
> fb
->height
||
2542 x
> fb
->width
- hdisplay
||
2543 y
> fb
->height
- vdisplay
) {
2544 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2545 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2546 crtc
->invert_dimensions
? " (inverted)" : "");
2552 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2555 * drm_mode_setcrtc - set CRTC configuration
2556 * @dev: drm device for the ioctl
2557 * @data: data pointer for the ioctl
2558 * @file_priv: drm file for the ioctl call
2560 * Build a new CRTC configuration based on user request.
2562 * Called by the user via ioctl.
2565 * Zero on success, negative errno on failure.
2567 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2568 struct drm_file
*file_priv
)
2570 struct drm_mode_config
*config
= &dev
->mode_config
;
2571 struct drm_mode_crtc
*crtc_req
= data
;
2572 struct drm_crtc
*crtc
;
2573 struct drm_connector
**connector_set
= NULL
, *connector
;
2574 struct drm_framebuffer
*fb
= NULL
;
2575 struct drm_display_mode
*mode
= NULL
;
2576 struct drm_mode_set set
;
2577 uint32_t __user
*set_connectors_ptr
;
2581 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2584 /* For some reason crtc x/y offsets are signed internally. */
2585 if (crtc_req
->x
> INT_MAX
|| crtc_req
->y
> INT_MAX
)
2588 drm_modeset_lock_all(dev
);
2589 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2591 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2595 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2597 if (crtc_req
->mode_valid
) {
2598 /* If we have a mode we need a framebuffer. */
2599 /* If we pass -1, set the mode with the currently bound fb */
2600 if (crtc_req
->fb_id
== -1) {
2601 if (!crtc
->primary
->fb
) {
2602 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2606 fb
= crtc
->primary
->fb
;
2607 /* Make refcounting symmetric with the lookup path. */
2608 drm_framebuffer_reference(fb
);
2610 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2612 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2619 mode
= drm_mode_create(dev
);
2625 ret
= drm_crtc_convert_umode(mode
, &crtc_req
->mode
);
2627 DRM_DEBUG_KMS("Invalid mode\n");
2631 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2633 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2640 if (crtc_req
->count_connectors
== 0 && mode
) {
2641 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2646 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2647 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2648 crtc_req
->count_connectors
);
2653 if (crtc_req
->count_connectors
> 0) {
2656 /* Avoid unbounded kernel memory allocation */
2657 if (crtc_req
->count_connectors
> config
->num_connector
) {
2662 connector_set
= kmalloc(crtc_req
->count_connectors
*
2663 sizeof(struct drm_connector
*),
2665 if (!connector_set
) {
2670 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2671 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2672 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2677 connector
= drm_connector_find(dev
, out_id
);
2679 DRM_DEBUG_KMS("Connector id %d unknown\n",
2684 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2688 connector_set
[i
] = connector
;
2693 set
.x
= crtc_req
->x
;
2694 set
.y
= crtc_req
->y
;
2696 set
.connectors
= connector_set
;
2697 set
.num_connectors
= crtc_req
->count_connectors
;
2699 ret
= drm_mode_set_config_internal(&set
);
2703 drm_framebuffer_unreference(fb
);
2705 kfree(connector_set
);
2706 drm_mode_destroy(dev
, mode
);
2707 drm_modeset_unlock_all(dev
);
2712 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2713 * universal plane handler call
2714 * @crtc: crtc to update cursor for
2715 * @req: data pointer for the ioctl
2716 * @file_priv: drm file for the ioctl call
2718 * Legacy cursor ioctl's work directly with driver buffer handles. To
2719 * translate legacy ioctl calls into universal plane handler calls, we need to
2720 * wrap the native buffer handle in a drm_framebuffer.
2722 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2723 * buffer with a pitch of 4*width; the universal plane interface should be used
2724 * directly in cases where the hardware can support other buffer settings and
2725 * userspace wants to make use of these capabilities.
2728 * Zero on success, negative errno on failure.
2730 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2731 struct drm_mode_cursor2
*req
,
2732 struct drm_file
*file_priv
)
2734 struct drm_device
*dev
= crtc
->dev
;
2735 struct drm_framebuffer
*fb
= NULL
;
2736 struct drm_mode_fb_cmd2 fbreq
= {
2737 .width
= req
->width
,
2738 .height
= req
->height
,
2739 .pixel_format
= DRM_FORMAT_ARGB8888
,
2740 .pitches
= { req
->width
* 4 },
2741 .handles
= { req
->handle
},
2743 int32_t crtc_x
, crtc_y
;
2744 uint32_t crtc_w
= 0, crtc_h
= 0;
2745 uint32_t src_w
= 0, src_h
= 0;
2748 BUG_ON(!crtc
->cursor
);
2749 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2752 * Obtain fb we'll be using (either new or existing) and take an extra
2753 * reference to it if fb != null. setplane will take care of dropping
2754 * the reference if the plane update fails.
2756 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2758 fb
= add_framebuffer_internal(dev
, &fbreq
, file_priv
);
2760 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2764 drm_framebuffer_reference(fb
);
2769 fb
= crtc
->cursor
->fb
;
2771 drm_framebuffer_reference(fb
);
2774 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2778 crtc_x
= crtc
->cursor_x
;
2779 crtc_y
= crtc
->cursor_y
;
2784 crtc_h
= fb
->height
;
2785 src_w
= fb
->width
<< 16;
2786 src_h
= fb
->height
<< 16;
2790 * setplane_internal will take care of deref'ing either the old or new
2791 * framebuffer depending on success.
2793 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2794 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2795 0, 0, src_w
, src_h
);
2797 /* Update successful; save new cursor position, if necessary */
2798 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2799 crtc
->cursor_x
= req
->x
;
2800 crtc
->cursor_y
= req
->y
;
2806 static int drm_mode_cursor_common(struct drm_device
*dev
,
2807 struct drm_mode_cursor2
*req
,
2808 struct drm_file
*file_priv
)
2810 struct drm_crtc
*crtc
;
2813 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2816 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2819 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2821 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2826 * If this crtc has a universal cursor plane, call that plane's update
2827 * handler rather than using legacy cursor handlers.
2829 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
2831 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2835 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2836 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2840 /* Turns off the cursor if handle is 0 */
2841 if (crtc
->funcs
->cursor_set2
)
2842 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2843 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2845 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2846 req
->width
, req
->height
);
2849 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2850 if (crtc
->funcs
->cursor_move
) {
2851 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
2858 drm_modeset_unlock_crtc(crtc
);
2866 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2867 * @dev: drm device for the ioctl
2868 * @data: data pointer for the ioctl
2869 * @file_priv: drm file for the ioctl call
2871 * Set the cursor configuration based on user request.
2873 * Called by the user via ioctl.
2876 * Zero on success, negative errno on failure.
2878 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
2879 void *data
, struct drm_file
*file_priv
)
2881 struct drm_mode_cursor
*req
= data
;
2882 struct drm_mode_cursor2 new_req
;
2884 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
2885 new_req
.hot_x
= new_req
.hot_y
= 0;
2887 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
2891 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2892 * @dev: drm device for the ioctl
2893 * @data: data pointer for the ioctl
2894 * @file_priv: drm file for the ioctl call
2896 * Set the cursor configuration based on user request. This implements the 2nd
2897 * version of the cursor ioctl, which allows userspace to additionally specify
2898 * the hotspot of the pointer.
2900 * Called by the user via ioctl.
2903 * Zero on success, negative errno on failure.
2905 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
2906 void *data
, struct drm_file
*file_priv
)
2908 struct drm_mode_cursor2
*req
= data
;
2909 return drm_mode_cursor_common(dev
, req
, file_priv
);
2913 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2914 * @bpp: bits per pixels
2915 * @depth: bit depth per pixel
2917 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2918 * Useful in fbdev emulation code, since that deals in those values.
2920 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
2926 fmt
= DRM_FORMAT_C8
;
2930 fmt
= DRM_FORMAT_XRGB1555
;
2932 fmt
= DRM_FORMAT_RGB565
;
2935 fmt
= DRM_FORMAT_RGB888
;
2939 fmt
= DRM_FORMAT_XRGB8888
;
2940 else if (depth
== 30)
2941 fmt
= DRM_FORMAT_XRGB2101010
;
2943 fmt
= DRM_FORMAT_ARGB8888
;
2946 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2947 fmt
= DRM_FORMAT_XRGB8888
;
2953 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
2956 * drm_mode_addfb - add an FB to the graphics configuration
2957 * @dev: drm device for the ioctl
2958 * @data: data pointer for the ioctl
2959 * @file_priv: drm file for the ioctl call
2961 * Add a new FB to the specified CRTC, given a user request. This is the
2962 * original addfb ioctl which only supported RGB formats.
2964 * Called by the user via ioctl.
2967 * Zero on success, negative errno on failure.
2969 int drm_mode_addfb(struct drm_device
*dev
,
2970 void *data
, struct drm_file
*file_priv
)
2972 struct drm_mode_fb_cmd
*or = data
;
2973 struct drm_mode_fb_cmd2 r
= {};
2976 /* convert to new format and call new ioctl */
2977 r
.fb_id
= or->fb_id
;
2978 r
.width
= or->width
;
2979 r
.height
= or->height
;
2980 r
.pitches
[0] = or->pitch
;
2981 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
2982 r
.handles
[0] = or->handle
;
2984 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
2988 or->fb_id
= r
.fb_id
;
2993 static int format_check(const struct drm_mode_fb_cmd2
*r
)
2995 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
2999 case DRM_FORMAT_RGB332
:
3000 case DRM_FORMAT_BGR233
:
3001 case DRM_FORMAT_XRGB4444
:
3002 case DRM_FORMAT_XBGR4444
:
3003 case DRM_FORMAT_RGBX4444
:
3004 case DRM_FORMAT_BGRX4444
:
3005 case DRM_FORMAT_ARGB4444
:
3006 case DRM_FORMAT_ABGR4444
:
3007 case DRM_FORMAT_RGBA4444
:
3008 case DRM_FORMAT_BGRA4444
:
3009 case DRM_FORMAT_XRGB1555
:
3010 case DRM_FORMAT_XBGR1555
:
3011 case DRM_FORMAT_RGBX5551
:
3012 case DRM_FORMAT_BGRX5551
:
3013 case DRM_FORMAT_ARGB1555
:
3014 case DRM_FORMAT_ABGR1555
:
3015 case DRM_FORMAT_RGBA5551
:
3016 case DRM_FORMAT_BGRA5551
:
3017 case DRM_FORMAT_RGB565
:
3018 case DRM_FORMAT_BGR565
:
3019 case DRM_FORMAT_RGB888
:
3020 case DRM_FORMAT_BGR888
:
3021 case DRM_FORMAT_XRGB8888
:
3022 case DRM_FORMAT_XBGR8888
:
3023 case DRM_FORMAT_RGBX8888
:
3024 case DRM_FORMAT_BGRX8888
:
3025 case DRM_FORMAT_ARGB8888
:
3026 case DRM_FORMAT_ABGR8888
:
3027 case DRM_FORMAT_RGBA8888
:
3028 case DRM_FORMAT_BGRA8888
:
3029 case DRM_FORMAT_XRGB2101010
:
3030 case DRM_FORMAT_XBGR2101010
:
3031 case DRM_FORMAT_RGBX1010102
:
3032 case DRM_FORMAT_BGRX1010102
:
3033 case DRM_FORMAT_ARGB2101010
:
3034 case DRM_FORMAT_ABGR2101010
:
3035 case DRM_FORMAT_RGBA1010102
:
3036 case DRM_FORMAT_BGRA1010102
:
3037 case DRM_FORMAT_YUYV
:
3038 case DRM_FORMAT_YVYU
:
3039 case DRM_FORMAT_UYVY
:
3040 case DRM_FORMAT_VYUY
:
3041 case DRM_FORMAT_AYUV
:
3042 case DRM_FORMAT_NV12
:
3043 case DRM_FORMAT_NV21
:
3044 case DRM_FORMAT_NV16
:
3045 case DRM_FORMAT_NV61
:
3046 case DRM_FORMAT_NV24
:
3047 case DRM_FORMAT_NV42
:
3048 case DRM_FORMAT_YUV410
:
3049 case DRM_FORMAT_YVU410
:
3050 case DRM_FORMAT_YUV411
:
3051 case DRM_FORMAT_YVU411
:
3052 case DRM_FORMAT_YUV420
:
3053 case DRM_FORMAT_YVU420
:
3054 case DRM_FORMAT_YUV422
:
3055 case DRM_FORMAT_YVU422
:
3056 case DRM_FORMAT_YUV444
:
3057 case DRM_FORMAT_YVU444
:
3060 DRM_DEBUG_KMS("invalid pixel format %s\n",
3061 drm_get_format_name(r
->pixel_format
));
3066 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3068 int ret
, hsub
, vsub
, num_planes
, i
;
3070 ret
= format_check(r
);
3072 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3073 drm_get_format_name(r
->pixel_format
));
3077 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3078 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3079 num_planes
= drm_format_num_planes(r
->pixel_format
);
3081 if (r
->width
== 0 || r
->width
% hsub
) {
3082 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3086 if (r
->height
== 0 || r
->height
% vsub
) {
3087 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3091 for (i
= 0; i
< num_planes
; i
++) {
3092 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3093 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3094 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3096 if (!r
->handles
[i
]) {
3097 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3101 if ((uint64_t) width
* cpp
> UINT_MAX
)
3104 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3107 if (r
->pitches
[i
] < width
* cpp
) {
3108 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3116 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
3117 struct drm_mode_fb_cmd2
*r
,
3118 struct drm_file
*file_priv
)
3120 struct drm_mode_config
*config
= &dev
->mode_config
;
3121 struct drm_framebuffer
*fb
;
3124 if (r
->flags
& ~DRM_MODE_FB_INTERLACED
) {
3125 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3126 return ERR_PTR(-EINVAL
);
3129 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3130 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3131 r
->width
, config
->min_width
, config
->max_width
);
3132 return ERR_PTR(-EINVAL
);
3134 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3135 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3136 r
->height
, config
->min_height
, config
->max_height
);
3137 return ERR_PTR(-EINVAL
);
3140 ret
= framebuffer_check(r
);
3142 return ERR_PTR(ret
);
3144 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3146 DRM_DEBUG_KMS("could not create framebuffer\n");
3150 mutex_lock(&file_priv
->fbs_lock
);
3151 r
->fb_id
= fb
->base
.id
;
3152 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3153 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3154 mutex_unlock(&file_priv
->fbs_lock
);
3160 * drm_mode_addfb2 - add an FB to the graphics configuration
3161 * @dev: drm device for the ioctl
3162 * @data: data pointer for the ioctl
3163 * @file_priv: drm file for the ioctl call
3165 * Add a new FB to the specified CRTC, given a user request with format. This is
3166 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3167 * and uses fourcc codes as pixel format specifiers.
3169 * Called by the user via ioctl.
3172 * Zero on success, negative errno on failure.
3174 int drm_mode_addfb2(struct drm_device
*dev
,
3175 void *data
, struct drm_file
*file_priv
)
3177 struct drm_framebuffer
*fb
;
3179 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3182 fb
= add_framebuffer_internal(dev
, data
, file_priv
);
3190 * drm_mode_rmfb - remove an FB from the configuration
3191 * @dev: drm device for the ioctl
3192 * @data: data pointer for the ioctl
3193 * @file_priv: drm file for the ioctl call
3195 * Remove the FB specified by the user.
3197 * Called by the user via ioctl.
3200 * Zero on success, negative errno on failure.
3202 int drm_mode_rmfb(struct drm_device
*dev
,
3203 void *data
, struct drm_file
*file_priv
)
3205 struct drm_framebuffer
*fb
= NULL
;
3206 struct drm_framebuffer
*fbl
= NULL
;
3207 uint32_t *id
= data
;
3210 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3213 mutex_lock(&file_priv
->fbs_lock
);
3214 mutex_lock(&dev
->mode_config
.fb_lock
);
3215 fb
= __drm_framebuffer_lookup(dev
, *id
);
3219 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3225 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3226 __drm_framebuffer_unregister(dev
, fb
);
3228 list_del_init(&fb
->filp_head
);
3229 mutex_unlock(&dev
->mode_config
.fb_lock
);
3230 mutex_unlock(&file_priv
->fbs_lock
);
3232 drm_framebuffer_remove(fb
);
3237 mutex_unlock(&dev
->mode_config
.fb_lock
);
3238 mutex_unlock(&file_priv
->fbs_lock
);
3244 * drm_mode_getfb - get FB info
3245 * @dev: drm device for the ioctl
3246 * @data: data pointer for the ioctl
3247 * @file_priv: drm file for the ioctl call
3249 * Lookup the FB given its ID and return info about it.
3251 * Called by the user via ioctl.
3254 * Zero on success, negative errno on failure.
3256 int drm_mode_getfb(struct drm_device
*dev
,
3257 void *data
, struct drm_file
*file_priv
)
3259 struct drm_mode_fb_cmd
*r
= data
;
3260 struct drm_framebuffer
*fb
;
3263 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3266 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3270 r
->height
= fb
->height
;
3271 r
->width
= fb
->width
;
3272 r
->depth
= fb
->depth
;
3273 r
->bpp
= fb
->bits_per_pixel
;
3274 r
->pitch
= fb
->pitches
[0];
3275 if (fb
->funcs
->create_handle
) {
3276 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3277 drm_is_control_client(file_priv
)) {
3278 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3281 /* GET_FB() is an unprivileged ioctl so we must not
3282 * return a buffer-handle to non-master processes! For
3283 * backwards-compatibility reasons, we cannot make
3284 * GET_FB() privileged, so just return an invalid handle
3285 * for non-masters. */
3293 drm_framebuffer_unreference(fb
);
3299 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3300 * @dev: drm device for the ioctl
3301 * @data: data pointer for the ioctl
3302 * @file_priv: drm file for the ioctl call
3304 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3305 * rectangle list. Generic userspace which does frontbuffer rendering must call
3306 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3307 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3309 * Modesetting drivers which always update the frontbuffer do not need to
3310 * implement the corresponding ->dirty framebuffer callback.
3312 * Called by the user via ioctl.
3315 * Zero on success, negative errno on failure.
3317 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3318 void *data
, struct drm_file
*file_priv
)
3320 struct drm_clip_rect __user
*clips_ptr
;
3321 struct drm_clip_rect
*clips
= NULL
;
3322 struct drm_mode_fb_dirty_cmd
*r
= data
;
3323 struct drm_framebuffer
*fb
;
3328 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3331 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3335 num_clips
= r
->num_clips
;
3336 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3338 if (!num_clips
!= !clips_ptr
) {
3343 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3345 /* If userspace annotates copy, clips must come in pairs */
3346 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3351 if (num_clips
&& clips_ptr
) {
3352 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3356 clips
= kzalloc(num_clips
* sizeof(*clips
), GFP_KERNEL
);
3362 ret
= copy_from_user(clips
, clips_ptr
,
3363 num_clips
* sizeof(*clips
));
3370 if (fb
->funcs
->dirty
) {
3371 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3380 drm_framebuffer_unreference(fb
);
3387 * drm_fb_release - remove and free the FBs on this file
3388 * @priv: drm file for the ioctl
3390 * Destroy all the FBs associated with @filp.
3392 * Called by the user via ioctl.
3395 * Zero on success, negative errno on failure.
3397 void drm_fb_release(struct drm_file
*priv
)
3399 struct drm_device
*dev
= priv
->minor
->dev
;
3400 struct drm_framebuffer
*fb
, *tfb
;
3403 * When the file gets released that means no one else can access the fb
3404 * list any more, so no need to grab fpriv->fbs_lock. And we need to to
3405 * avoid upsetting lockdep since the universal cursor code adds a
3406 * framebuffer while holding mutex locks.
3408 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3409 * locks is impossible here since no one else but this function can get
3412 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3414 mutex_lock(&dev
->mode_config
.fb_lock
);
3415 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3416 __drm_framebuffer_unregister(dev
, fb
);
3417 mutex_unlock(&dev
->mode_config
.fb_lock
);
3419 list_del_init(&fb
->filp_head
);
3421 /* This will also drop the fpriv->fbs reference. */
3422 drm_framebuffer_remove(fb
);
3427 * drm_property_create - create a new property type
3429 * @flags: flags specifying the property type
3430 * @name: name of the property
3431 * @num_values: number of pre-defined values
3433 * This creates a new generic drm property which can then be attached to a drm
3434 * object with drm_object_attach_property. The returned property object must be
3435 * freed with drm_property_destroy.
3437 * Note that the DRM core keeps a per-device list of properties and that, if
3438 * drm_mode_config_cleanup() is called, it will destroy all properties created
3442 * A pointer to the newly created property on success, NULL on failure.
3444 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3445 const char *name
, int num_values
)
3447 struct drm_property
*property
= NULL
;
3450 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3454 property
->dev
= dev
;
3457 property
->values
= kzalloc(sizeof(uint64_t)*num_values
, GFP_KERNEL
);
3458 if (!property
->values
)
3462 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3466 property
->flags
= flags
;
3467 property
->num_values
= num_values
;
3468 INIT_LIST_HEAD(&property
->enum_list
);
3471 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3472 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3475 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3477 WARN_ON(!drm_property_type_valid(property
));
3481 kfree(property
->values
);
3485 EXPORT_SYMBOL(drm_property_create
);
3488 * drm_property_create_enum - create a new enumeration property type
3490 * @flags: flags specifying the property type
3491 * @name: name of the property
3492 * @props: enumeration lists with property values
3493 * @num_values: number of pre-defined values
3495 * This creates a new generic drm property which can then be attached to a drm
3496 * object with drm_object_attach_property. The returned property object must be
3497 * freed with drm_property_destroy.
3499 * Userspace is only allowed to set one of the predefined values for enumeration
3503 * A pointer to the newly created property on success, NULL on failure.
3505 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3507 const struct drm_prop_enum_list
*props
,
3510 struct drm_property
*property
;
3513 flags
|= DRM_MODE_PROP_ENUM
;
3515 property
= drm_property_create(dev
, flags
, name
, num_values
);
3519 for (i
= 0; i
< num_values
; i
++) {
3520 ret
= drm_property_add_enum(property
, i
,
3524 drm_property_destroy(dev
, property
);
3531 EXPORT_SYMBOL(drm_property_create_enum
);
3534 * drm_property_create_bitmask - create a new bitmask property type
3536 * @flags: flags specifying the property type
3537 * @name: name of the property
3538 * @props: enumeration lists with property bitflags
3539 * @num_props: size of the @props array
3540 * @supported_bits: bitmask of all supported enumeration values
3542 * This creates a new bitmask drm property which can then be attached to a drm
3543 * object with drm_object_attach_property. The returned property object must be
3544 * freed with drm_property_destroy.
3546 * Compared to plain enumeration properties userspace is allowed to set any
3547 * or'ed together combination of the predefined property bitflag values
3550 * A pointer to the newly created property on success, NULL on failure.
3552 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3553 int flags
, const char *name
,
3554 const struct drm_prop_enum_list
*props
,
3556 uint64_t supported_bits
)
3558 struct drm_property
*property
;
3559 int i
, ret
, index
= 0;
3560 int num_values
= hweight64(supported_bits
);
3562 flags
|= DRM_MODE_PROP_BITMASK
;
3564 property
= drm_property_create(dev
, flags
, name
, num_values
);
3567 for (i
= 0; i
< num_props
; i
++) {
3568 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3571 if (WARN_ON(index
>= num_values
)) {
3572 drm_property_destroy(dev
, property
);
3576 ret
= drm_property_add_enum(property
, index
++,
3580 drm_property_destroy(dev
, property
);
3587 EXPORT_SYMBOL(drm_property_create_bitmask
);
3589 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3590 int flags
, const char *name
,
3591 uint64_t min
, uint64_t max
)
3593 struct drm_property
*property
;
3595 property
= drm_property_create(dev
, flags
, name
, 2);
3599 property
->values
[0] = min
;
3600 property
->values
[1] = max
;
3606 * drm_property_create_range - create a new ranged property type
3608 * @flags: flags specifying the property type
3609 * @name: name of the property
3610 * @min: minimum value of the property
3611 * @max: maximum value of the property
3613 * This creates a new generic drm property which can then be attached to a drm
3614 * object with drm_object_attach_property. The returned property object must be
3615 * freed with drm_property_destroy.
3617 * Userspace is allowed to set any integer value in the (min, max) range
3621 * A pointer to the newly created property on success, NULL on failure.
3623 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3625 uint64_t min
, uint64_t max
)
3627 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3630 EXPORT_SYMBOL(drm_property_create_range
);
3632 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3633 int flags
, const char *name
,
3634 int64_t min
, int64_t max
)
3636 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3637 name
, I642U64(min
), I642U64(max
));
3639 EXPORT_SYMBOL(drm_property_create_signed_range
);
3641 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3642 int flags
, const char *name
, uint32_t type
)
3644 struct drm_property
*property
;
3646 flags
|= DRM_MODE_PROP_OBJECT
;
3648 property
= drm_property_create(dev
, flags
, name
, 1);
3652 property
->values
[0] = type
;
3656 EXPORT_SYMBOL(drm_property_create_object
);
3659 * drm_property_add_enum - add a possible value to an enumeration property
3660 * @property: enumeration property to change
3661 * @index: index of the new enumeration
3662 * @value: value of the new enumeration
3663 * @name: symbolic name of the new enumeration
3665 * This functions adds enumerations to a property.
3667 * It's use is deprecated, drivers should use one of the more specific helpers
3668 * to directly create the property with all enumerations already attached.
3671 * Zero on success, error code on failure.
3673 int drm_property_add_enum(struct drm_property
*property
, int index
,
3674 uint64_t value
, const char *name
)
3676 struct drm_property_enum
*prop_enum
;
3678 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3679 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3683 * Bitmask enum properties have the additional constraint of values
3686 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3690 if (!list_empty(&property
->enum_list
)) {
3691 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3692 if (prop_enum
->value
== value
) {
3693 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3694 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3700 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3704 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3705 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3706 prop_enum
->value
= value
;
3708 property
->values
[index
] = value
;
3709 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
3712 EXPORT_SYMBOL(drm_property_add_enum
);
3715 * drm_property_destroy - destroy a drm property
3717 * @property: property to destry
3719 * This function frees a property including any attached resources like
3720 * enumeration values.
3722 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3724 struct drm_property_enum
*prop_enum
, *pt
;
3726 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
3727 list_del(&prop_enum
->head
);
3731 if (property
->num_values
)
3732 kfree(property
->values
);
3733 drm_mode_object_put(dev
, &property
->base
);
3734 list_del(&property
->head
);
3737 EXPORT_SYMBOL(drm_property_destroy
);
3740 * drm_object_attach_property - attach a property to a modeset object
3741 * @obj: drm modeset object
3742 * @property: property to attach
3743 * @init_val: initial value of the property
3745 * This attaches the given property to the modeset object with the given initial
3746 * value. Currently this function cannot fail since the properties are stored in
3747 * a statically sized array.
3749 void drm_object_attach_property(struct drm_mode_object
*obj
,
3750 struct drm_property
*property
,
3753 int count
= obj
->properties
->count
;
3755 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3756 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3757 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3758 "you see this message on the same object type.\n",
3763 obj
->properties
->ids
[count
] = property
->base
.id
;
3764 obj
->properties
->values
[count
] = init_val
;
3765 obj
->properties
->count
++;
3767 EXPORT_SYMBOL(drm_object_attach_property
);
3770 * drm_object_property_set_value - set the value of a property
3771 * @obj: drm mode object to set property value for
3772 * @property: property to set
3773 * @val: value the property should be set to
3775 * This functions sets a given property on a given object. This function only
3776 * changes the software state of the property, it does not call into the
3777 * driver's ->set_property callback.
3780 * Zero on success, error code on failure.
3782 int drm_object_property_set_value(struct drm_mode_object
*obj
,
3783 struct drm_property
*property
, uint64_t val
)
3787 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3788 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3789 obj
->properties
->values
[i
] = val
;
3796 EXPORT_SYMBOL(drm_object_property_set_value
);
3799 * drm_object_property_get_value - retrieve the value of a property
3800 * @obj: drm mode object to get property value from
3801 * @property: property to retrieve
3802 * @val: storage for the property value
3804 * This function retrieves the softare state of the given property for the given
3805 * property. Since there is no driver callback to retrieve the current property
3806 * value this might be out of sync with the hardware, depending upon the driver
3810 * Zero on success, error code on failure.
3812 int drm_object_property_get_value(struct drm_mode_object
*obj
,
3813 struct drm_property
*property
, uint64_t *val
)
3817 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3818 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3819 *val
= obj
->properties
->values
[i
];
3826 EXPORT_SYMBOL(drm_object_property_get_value
);
3829 * drm_mode_getproperty_ioctl - get the property metadata
3832 * @file_priv: DRM file info
3834 * This function retrieves the metadata for a given property, like the different
3835 * possible values for an enum property or the limits for a range property.
3837 * Blob properties are special
3839 * Called by the user via ioctl.
3842 * Zero on success, negative errno on failure.
3844 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
3845 void *data
, struct drm_file
*file_priv
)
3847 struct drm_mode_get_property
*out_resp
= data
;
3848 struct drm_property
*property
;
3850 int value_count
= 0;
3853 struct drm_property_enum
*prop_enum
;
3854 struct drm_mode_property_enum __user
*enum_ptr
;
3855 uint64_t __user
*values_ptr
;
3857 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3860 drm_modeset_lock_all(dev
);
3861 property
= drm_property_find(dev
, out_resp
->prop_id
);
3867 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3868 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3869 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
3873 value_count
= property
->num_values
;
3875 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
3876 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
3877 out_resp
->flags
= property
->flags
;
3879 if ((out_resp
->count_values
>= value_count
) && value_count
) {
3880 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
3881 for (i
= 0; i
< value_count
; i
++) {
3882 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
3888 out_resp
->count_values
= value_count
;
3890 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3891 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3892 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
3894 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
3895 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3897 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
3902 if (copy_to_user(&enum_ptr
[copied
].name
,
3903 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
3910 out_resp
->count_enum_blobs
= enum_count
;
3914 * NOTE: The idea seems to have been to use this to read all the blob
3915 * property values. But nothing ever added them to the corresponding
3916 * list, userspace always used the special-purpose get_blob ioctl to
3917 * read the value for a blob property. It also doesn't make a lot of
3918 * sense to return values here when everything else is just metadata for
3919 * the property itself.
3921 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
3922 out_resp
->count_enum_blobs
= 0;
3924 drm_modeset_unlock_all(dev
);
3928 static struct drm_property_blob
*
3929 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
3932 struct drm_property_blob
*blob
;
3935 if (!length
|| !data
)
3938 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
3942 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
3948 blob
->length
= length
;
3950 memcpy(blob
->data
, data
, length
);
3952 list_add_tail(&blob
->head
, &dev
->mode_config
.property_blob_list
);
3956 static void drm_property_destroy_blob(struct drm_device
*dev
,
3957 struct drm_property_blob
*blob
)
3959 drm_mode_object_put(dev
, &blob
->base
);
3960 list_del(&blob
->head
);
3965 * drm_mode_getblob_ioctl - get the contents of a blob property value
3968 * @file_priv: DRM file info
3970 * This function retrieves the contents of a blob property. The value stored in
3971 * an object's blob property is just a normal modeset object id.
3973 * Called by the user via ioctl.
3976 * Zero on success, negative errno on failure.
3978 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
3979 void *data
, struct drm_file
*file_priv
)
3981 struct drm_mode_get_blob
*out_resp
= data
;
3982 struct drm_property_blob
*blob
;
3984 void __user
*blob_ptr
;
3986 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3989 drm_modeset_lock_all(dev
);
3990 blob
= drm_property_blob_find(dev
, out_resp
->blob_id
);
3996 if (out_resp
->length
== blob
->length
) {
3997 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
3998 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)){
4003 out_resp
->length
= blob
->length
;
4006 drm_modeset_unlock_all(dev
);
4011 * drm_mode_connector_set_path_property - set tile property on connector
4012 * @connector: connector to set property on.
4013 * @path: path to use for property.
4015 * This creates a property to expose to userspace to specify a
4016 * connector path. This is mainly used for DisplayPort MST where
4017 * connectors have a topology and we want to allow userspace to give
4018 * them more meaningful names.
4021 * Zero on success, negative errno on failure.
4023 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4026 struct drm_device
*dev
= connector
->dev
;
4027 size_t size
= strlen(path
) + 1;
4030 connector
->path_blob_ptr
= drm_property_create_blob(connector
->dev
,
4032 if (!connector
->path_blob_ptr
)
4035 ret
= drm_object_property_set_value(&connector
->base
,
4036 dev
->mode_config
.path_property
,
4037 connector
->path_blob_ptr
->base
.id
);
4040 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4043 * drm_mode_connector_update_edid_property - update the edid property of a connector
4044 * @connector: drm connector
4045 * @edid: new value of the edid property
4047 * This function creates a new blob modeset object and assigns its id to the
4048 * connector's edid property.
4051 * Zero on success, negative errno on failure.
4053 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4054 const struct edid
*edid
)
4056 struct drm_device
*dev
= connector
->dev
;
4060 /* ignore requests to set edid when overridden */
4061 if (connector
->override_edid
)
4064 if (connector
->edid_blob_ptr
)
4065 drm_property_destroy_blob(dev
, connector
->edid_blob_ptr
);
4067 /* Delete edid, when there is none. */
4069 connector
->edid_blob_ptr
= NULL
;
4070 ret
= drm_object_property_set_value(&connector
->base
, dev
->mode_config
.edid_property
, 0);
4074 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4075 connector
->edid_blob_ptr
= drm_property_create_blob(connector
->dev
,
4077 if (!connector
->edid_blob_ptr
)
4080 ret
= drm_object_property_set_value(&connector
->base
,
4081 dev
->mode_config
.edid_property
,
4082 connector
->edid_blob_ptr
->base
.id
);
4086 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4088 static bool drm_property_change_is_valid(struct drm_property
*property
,
4091 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4094 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4095 if (value
< property
->values
[0] || value
> property
->values
[1])
4098 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4099 int64_t svalue
= U642I64(value
);
4100 if (svalue
< U642I64(property
->values
[0]) ||
4101 svalue
> U642I64(property
->values
[1]))
4104 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4106 uint64_t valid_mask
= 0;
4107 for (i
= 0; i
< property
->num_values
; i
++)
4108 valid_mask
|= (1ULL << property
->values
[i
]);
4109 return !(value
& ~valid_mask
);
4110 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4111 /* Only the driver knows */
4113 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4114 struct drm_mode_object
*obj
;
4115 /* a zero value for an object property translates to null: */
4119 * NOTE: use _object_find() directly to bypass restriction on
4120 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4121 * object this could race against object finalization, so it
4122 * simply tells us that the object *was* valid. Which is good
4125 obj
= _object_find(property
->dev
, value
, property
->values
[0]);
4129 for (i
= 0; i
< property
->num_values
; i
++)
4130 if (property
->values
[i
] == value
)
4137 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4140 * @file_priv: DRM file info
4142 * This function sets the current value for a connectors's property. It also
4143 * calls into a driver's ->set_property callback to update the hardware state
4145 * Called by the user via ioctl.
4148 * Zero on success, negative errno on failure.
4150 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4151 void *data
, struct drm_file
*file_priv
)
4153 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4154 struct drm_mode_obj_set_property obj_set_prop
= {
4155 .value
= conn_set_prop
->value
,
4156 .prop_id
= conn_set_prop
->prop_id
,
4157 .obj_id
= conn_set_prop
->connector_id
,
4158 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4161 /* It does all the locking and checking we need */
4162 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4165 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4166 struct drm_property
*property
,
4170 struct drm_connector
*connector
= obj_to_connector(obj
);
4172 /* Do DPMS ourselves */
4173 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4174 if (connector
->funcs
->dpms
)
4175 (*connector
->funcs
->dpms
)(connector
, (int)value
);
4177 } else if (connector
->funcs
->set_property
)
4178 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4180 /* store the property value if successful */
4182 drm_object_property_set_value(&connector
->base
, property
, value
);
4186 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4187 struct drm_property
*property
,
4191 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4193 if (crtc
->funcs
->set_property
)
4194 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4196 drm_object_property_set_value(obj
, property
, value
);
4202 * drm_mode_plane_set_obj_prop - set the value of a property
4203 * @plane: drm plane object to set property value for
4204 * @property: property to set
4205 * @value: value the property should be set to
4207 * This functions sets a given property on a given plane object. This function
4208 * calls the driver's ->set_property callback and changes the software state of
4209 * the property if the callback succeeds.
4212 * Zero on success, error code on failure.
4214 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4215 struct drm_property
*property
,
4219 struct drm_mode_object
*obj
= &plane
->base
;
4221 if (plane
->funcs
->set_property
)
4222 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4224 drm_object_property_set_value(obj
, property
, value
);
4228 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4231 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4234 * @file_priv: DRM file info
4236 * This function retrieves the current value for an object's property. Compared
4237 * to the connector specific ioctl this one is extended to also work on crtc and
4240 * Called by the user via ioctl.
4243 * Zero on success, negative errno on failure.
4245 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4246 struct drm_file
*file_priv
)
4248 struct drm_mode_obj_get_properties
*arg
= data
;
4249 struct drm_mode_object
*obj
;
4253 int props_count
= 0;
4254 uint32_t __user
*props_ptr
;
4255 uint64_t __user
*prop_values_ptr
;
4257 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4260 drm_modeset_lock_all(dev
);
4262 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4267 if (!obj
->properties
) {
4272 props_count
= obj
->properties
->count
;
4274 /* This ioctl is called twice, once to determine how much space is
4275 * needed, and the 2nd time to fill it. */
4276 if ((arg
->count_props
>= props_count
) && props_count
) {
4278 props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->props_ptr
);
4279 prop_values_ptr
= (uint64_t __user
*)(unsigned long)
4280 (arg
->prop_values_ptr
);
4281 for (i
= 0; i
< props_count
; i
++) {
4282 if (put_user(obj
->properties
->ids
[i
],
4283 props_ptr
+ copied
)) {
4287 if (put_user(obj
->properties
->values
[i
],
4288 prop_values_ptr
+ copied
)) {
4295 arg
->count_props
= props_count
;
4297 drm_modeset_unlock_all(dev
);
4302 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4305 * @file_priv: DRM file info
4307 * This function sets the current value for an object's property. It also calls
4308 * into a driver's ->set_property callback to update the hardware state.
4309 * Compared to the connector specific ioctl this one is extended to also work on
4310 * crtc and plane objects.
4312 * Called by the user via ioctl.
4315 * Zero on success, negative errno on failure.
4317 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4318 struct drm_file
*file_priv
)
4320 struct drm_mode_obj_set_property
*arg
= data
;
4321 struct drm_mode_object
*arg_obj
;
4322 struct drm_mode_object
*prop_obj
;
4323 struct drm_property
*property
;
4327 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4330 drm_modeset_lock_all(dev
);
4332 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4337 if (!arg_obj
->properties
)
4340 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4341 if (arg_obj
->properties
->ids
[i
] == arg
->prop_id
)
4344 if (i
== arg_obj
->properties
->count
)
4347 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
4348 DRM_MODE_OBJECT_PROPERTY
);
4353 property
= obj_to_property(prop_obj
);
4355 if (!drm_property_change_is_valid(property
, arg
->value
))
4358 switch (arg_obj
->type
) {
4359 case DRM_MODE_OBJECT_CONNECTOR
:
4360 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
4363 case DRM_MODE_OBJECT_CRTC
:
4364 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
4366 case DRM_MODE_OBJECT_PLANE
:
4367 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
4368 property
, arg
->value
);
4373 drm_modeset_unlock_all(dev
);
4378 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4379 * @connector: connector to attach
4380 * @encoder: encoder to attach @connector to
4382 * This function links up a connector to an encoder. Note that the routing
4383 * restrictions between encoders and crtcs are exposed to userspace through the
4384 * possible_clones and possible_crtcs bitmasks.
4387 * Zero on success, negative errno on failure.
4389 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
4390 struct drm_encoder
*encoder
)
4394 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
4395 if (connector
->encoder_ids
[i
] == 0) {
4396 connector
->encoder_ids
[i
] = encoder
->base
.id
;
4402 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
4405 * drm_mode_crtc_set_gamma_size - set the gamma table size
4406 * @crtc: CRTC to set the gamma table size for
4407 * @gamma_size: size of the gamma table
4409 * Drivers which support gamma tables should set this to the supported gamma
4410 * table size when initializing the CRTC. Currently the drm core only supports a
4411 * fixed gamma table size.
4414 * Zero on success, negative errno on failure.
4416 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
4419 crtc
->gamma_size
= gamma_size
;
4421 crtc
->gamma_store
= kzalloc(gamma_size
* sizeof(uint16_t) * 3, GFP_KERNEL
);
4422 if (!crtc
->gamma_store
) {
4423 crtc
->gamma_size
= 0;
4429 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
4432 * drm_mode_gamma_set_ioctl - set the gamma table
4435 * @file_priv: DRM file info
4437 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4438 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4440 * Called by the user via ioctl.
4443 * Zero on success, negative errno on failure.
4445 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
4446 void *data
, struct drm_file
*file_priv
)
4448 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4449 struct drm_crtc
*crtc
;
4450 void *r_base
, *g_base
, *b_base
;
4454 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4457 drm_modeset_lock_all(dev
);
4458 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4464 if (crtc
->funcs
->gamma_set
== NULL
) {
4469 /* memcpy into gamma store */
4470 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4475 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4476 r_base
= crtc
->gamma_store
;
4477 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
4482 g_base
= r_base
+ size
;
4483 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
4488 b_base
= g_base
+ size
;
4489 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
4494 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
4497 drm_modeset_unlock_all(dev
);
4503 * drm_mode_gamma_get_ioctl - get the gamma table
4506 * @file_priv: DRM file info
4508 * Copy the current gamma table into the storage provided. This also provides
4509 * the gamma table size the driver expects, which can be used to size the
4510 * allocated storage.
4512 * Called by the user via ioctl.
4515 * Zero on success, negative errno on failure.
4517 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
4518 void *data
, struct drm_file
*file_priv
)
4520 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4521 struct drm_crtc
*crtc
;
4522 void *r_base
, *g_base
, *b_base
;
4526 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4529 drm_modeset_lock_all(dev
);
4530 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4536 /* memcpy into gamma store */
4537 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4542 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4543 r_base
= crtc
->gamma_store
;
4544 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
4549 g_base
= r_base
+ size
;
4550 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
4555 b_base
= g_base
+ size
;
4556 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
4561 drm_modeset_unlock_all(dev
);
4566 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4569 * @file_priv: DRM file info
4571 * This schedules an asynchronous update on a given CRTC, called page flip.
4572 * Optionally a drm event is generated to signal the completion of the event.
4573 * Generic drivers cannot assume that a pageflip with changed framebuffer
4574 * properties (including driver specific metadata like tiling layout) will work,
4575 * but some drivers support e.g. pixel format changes through the pageflip
4578 * Called by the user via ioctl.
4581 * Zero on success, negative errno on failure.
4583 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
4584 void *data
, struct drm_file
*file_priv
)
4586 struct drm_mode_crtc_page_flip
*page_flip
= data
;
4587 struct drm_crtc
*crtc
;
4588 struct drm_framebuffer
*fb
= NULL
;
4589 struct drm_pending_vblank_event
*e
= NULL
;
4590 unsigned long flags
;
4593 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
4594 page_flip
->reserved
!= 0)
4597 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
4600 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
4604 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
4605 if (crtc
->primary
->fb
== NULL
) {
4606 /* The framebuffer is currently unbound, presumably
4607 * due to a hotplug event, that userspace has not
4614 if (crtc
->funcs
->page_flip
== NULL
)
4617 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
4623 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
4627 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
4628 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4633 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4635 spin_lock_irqsave(&dev
->event_lock
, flags
);
4636 if (file_priv
->event_space
< sizeof e
->event
) {
4637 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4640 file_priv
->event_space
-= sizeof e
->event
;
4641 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4643 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
4645 spin_lock_irqsave(&dev
->event_lock
, flags
);
4646 file_priv
->event_space
+= sizeof e
->event
;
4647 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4651 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
4652 e
->event
.base
.length
= sizeof e
->event
;
4653 e
->event
.user_data
= page_flip
->user_data
;
4654 e
->base
.event
= &e
->event
.base
;
4655 e
->base
.file_priv
= file_priv
;
4657 (void (*) (struct drm_pending_event
*)) kfree
;
4660 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
4661 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
4663 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4664 spin_lock_irqsave(&dev
->event_lock
, flags
);
4665 file_priv
->event_space
+= sizeof e
->event
;
4666 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4669 /* Keep the old fb, don't unref it. */
4670 crtc
->primary
->old_fb
= NULL
;
4673 * Warn if the driver hasn't properly updated the crtc->fb
4674 * field to reflect that the new framebuffer is now used.
4675 * Failing to do so will screw with the reference counting
4678 WARN_ON(crtc
->primary
->fb
!= fb
);
4679 /* Unref only the old framebuffer. */
4685 drm_framebuffer_unreference(fb
);
4686 if (crtc
->primary
->old_fb
)
4687 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
4688 crtc
->primary
->old_fb
= NULL
;
4689 drm_modeset_unlock_crtc(crtc
);
4695 * drm_mode_config_reset - call ->reset callbacks
4698 * This functions calls all the crtc's, encoder's and connector's ->reset
4699 * callback. Drivers can use this in e.g. their driver load or resume code to
4700 * reset hardware and software state.
4702 void drm_mode_config_reset(struct drm_device
*dev
)
4704 struct drm_crtc
*crtc
;
4705 struct drm_plane
*plane
;
4706 struct drm_encoder
*encoder
;
4707 struct drm_connector
*connector
;
4709 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
)
4710 if (plane
->funcs
->reset
)
4711 plane
->funcs
->reset(plane
);
4713 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
4714 if (crtc
->funcs
->reset
)
4715 crtc
->funcs
->reset(crtc
);
4717 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
4718 if (encoder
->funcs
->reset
)
4719 encoder
->funcs
->reset(encoder
);
4721 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
4722 connector
->status
= connector_status_unknown
;
4724 if (connector
->funcs
->reset
)
4725 connector
->funcs
->reset(connector
);
4728 EXPORT_SYMBOL(drm_mode_config_reset
);
4731 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4734 * @file_priv: DRM file info
4736 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4737 * TTM or something else entirely) and returns the resulting buffer handle. This
4738 * handle can then be wrapped up into a framebuffer modeset object.
4740 * Note that userspace is not allowed to use such objects for render
4741 * acceleration - drivers must create their own private ioctls for such a use
4744 * Called by the user via ioctl.
4747 * Zero on success, negative errno on failure.
4749 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
4750 void *data
, struct drm_file
*file_priv
)
4752 struct drm_mode_create_dumb
*args
= data
;
4753 u32 cpp
, stride
, size
;
4755 if (!dev
->driver
->dumb_create
)
4757 if (!args
->width
|| !args
->height
|| !args
->bpp
)
4760 /* overflow checks for 32bit size calculations */
4761 /* NOTE: DIV_ROUND_UP() can overflow */
4762 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
4763 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
4765 stride
= cpp
* args
->width
;
4766 if (args
->height
> 0xffffffffU
/ stride
)
4769 /* test for wrap-around */
4770 size
= args
->height
* stride
;
4771 if (PAGE_ALIGN(size
) == 0)
4775 * handle, pitch and size are output parameters. Zero them out to
4776 * prevent drivers from accidentally using uninitialized data. Since
4777 * not all existing userspace is clearing these fields properly we
4778 * cannot reject IOCTL with garbage in them.
4784 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
4788 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4791 * @file_priv: DRM file info
4793 * Allocate an offset in the drm device node's address space to be able to
4794 * memory map a dumb buffer.
4796 * Called by the user via ioctl.
4799 * Zero on success, negative errno on failure.
4801 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
4802 void *data
, struct drm_file
*file_priv
)
4804 struct drm_mode_map_dumb
*args
= data
;
4806 /* call driver ioctl to get mmap offset */
4807 if (!dev
->driver
->dumb_map_offset
)
4810 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
4814 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4817 * @file_priv: DRM file info
4819 * This destroys the userspace handle for the given dumb backing storage buffer.
4820 * Since buffer objects must be reference counted in the kernel a buffer object
4821 * won't be immediately freed if a framebuffer modeset object still uses it.
4823 * Called by the user via ioctl.
4826 * Zero on success, negative errno on failure.
4828 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
4829 void *data
, struct drm_file
*file_priv
)
4831 struct drm_mode_destroy_dumb
*args
= data
;
4833 if (!dev
->driver
->dumb_destroy
)
4836 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
4840 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4841 * @format: pixel format (DRM_FORMAT_*)
4842 * @depth: storage for the depth value
4843 * @bpp: storage for the bpp value
4845 * This only supports RGB formats here for compat with code that doesn't use
4846 * pixel formats directly yet.
4848 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
4853 case DRM_FORMAT_RGB332
:
4854 case DRM_FORMAT_BGR233
:
4858 case DRM_FORMAT_XRGB1555
:
4859 case DRM_FORMAT_XBGR1555
:
4860 case DRM_FORMAT_RGBX5551
:
4861 case DRM_FORMAT_BGRX5551
:
4862 case DRM_FORMAT_ARGB1555
:
4863 case DRM_FORMAT_ABGR1555
:
4864 case DRM_FORMAT_RGBA5551
:
4865 case DRM_FORMAT_BGRA5551
:
4869 case DRM_FORMAT_RGB565
:
4870 case DRM_FORMAT_BGR565
:
4874 case DRM_FORMAT_RGB888
:
4875 case DRM_FORMAT_BGR888
:
4879 case DRM_FORMAT_XRGB8888
:
4880 case DRM_FORMAT_XBGR8888
:
4881 case DRM_FORMAT_RGBX8888
:
4882 case DRM_FORMAT_BGRX8888
:
4886 case DRM_FORMAT_XRGB2101010
:
4887 case DRM_FORMAT_XBGR2101010
:
4888 case DRM_FORMAT_RGBX1010102
:
4889 case DRM_FORMAT_BGRX1010102
:
4890 case DRM_FORMAT_ARGB2101010
:
4891 case DRM_FORMAT_ABGR2101010
:
4892 case DRM_FORMAT_RGBA1010102
:
4893 case DRM_FORMAT_BGRA1010102
:
4897 case DRM_FORMAT_ARGB8888
:
4898 case DRM_FORMAT_ABGR8888
:
4899 case DRM_FORMAT_RGBA8888
:
4900 case DRM_FORMAT_BGRA8888
:
4905 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4906 drm_get_format_name(format
));
4912 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
4915 * drm_format_num_planes - get the number of planes for format
4916 * @format: pixel format (DRM_FORMAT_*)
4919 * The number of planes used by the specified pixel format.
4921 int drm_format_num_planes(uint32_t format
)
4924 case DRM_FORMAT_YUV410
:
4925 case DRM_FORMAT_YVU410
:
4926 case DRM_FORMAT_YUV411
:
4927 case DRM_FORMAT_YVU411
:
4928 case DRM_FORMAT_YUV420
:
4929 case DRM_FORMAT_YVU420
:
4930 case DRM_FORMAT_YUV422
:
4931 case DRM_FORMAT_YVU422
:
4932 case DRM_FORMAT_YUV444
:
4933 case DRM_FORMAT_YVU444
:
4935 case DRM_FORMAT_NV12
:
4936 case DRM_FORMAT_NV21
:
4937 case DRM_FORMAT_NV16
:
4938 case DRM_FORMAT_NV61
:
4939 case DRM_FORMAT_NV24
:
4940 case DRM_FORMAT_NV42
:
4946 EXPORT_SYMBOL(drm_format_num_planes
);
4949 * drm_format_plane_cpp - determine the bytes per pixel value
4950 * @format: pixel format (DRM_FORMAT_*)
4951 * @plane: plane index
4954 * The bytes per pixel value for the specified plane.
4956 int drm_format_plane_cpp(uint32_t format
, int plane
)
4961 if (plane
>= drm_format_num_planes(format
))
4965 case DRM_FORMAT_YUYV
:
4966 case DRM_FORMAT_YVYU
:
4967 case DRM_FORMAT_UYVY
:
4968 case DRM_FORMAT_VYUY
:
4970 case DRM_FORMAT_NV12
:
4971 case DRM_FORMAT_NV21
:
4972 case DRM_FORMAT_NV16
:
4973 case DRM_FORMAT_NV61
:
4974 case DRM_FORMAT_NV24
:
4975 case DRM_FORMAT_NV42
:
4976 return plane
? 2 : 1;
4977 case DRM_FORMAT_YUV410
:
4978 case DRM_FORMAT_YVU410
:
4979 case DRM_FORMAT_YUV411
:
4980 case DRM_FORMAT_YVU411
:
4981 case DRM_FORMAT_YUV420
:
4982 case DRM_FORMAT_YVU420
:
4983 case DRM_FORMAT_YUV422
:
4984 case DRM_FORMAT_YVU422
:
4985 case DRM_FORMAT_YUV444
:
4986 case DRM_FORMAT_YVU444
:
4989 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
4993 EXPORT_SYMBOL(drm_format_plane_cpp
);
4996 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4997 * @format: pixel format (DRM_FORMAT_*)
5000 * The horizontal chroma subsampling factor for the
5001 * specified pixel format.
5003 int drm_format_horz_chroma_subsampling(uint32_t format
)
5006 case DRM_FORMAT_YUV411
:
5007 case DRM_FORMAT_YVU411
:
5008 case DRM_FORMAT_YUV410
:
5009 case DRM_FORMAT_YVU410
:
5011 case DRM_FORMAT_YUYV
:
5012 case DRM_FORMAT_YVYU
:
5013 case DRM_FORMAT_UYVY
:
5014 case DRM_FORMAT_VYUY
:
5015 case DRM_FORMAT_NV12
:
5016 case DRM_FORMAT_NV21
:
5017 case DRM_FORMAT_NV16
:
5018 case DRM_FORMAT_NV61
:
5019 case DRM_FORMAT_YUV422
:
5020 case DRM_FORMAT_YVU422
:
5021 case DRM_FORMAT_YUV420
:
5022 case DRM_FORMAT_YVU420
:
5028 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5031 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5032 * @format: pixel format (DRM_FORMAT_*)
5035 * The vertical chroma subsampling factor for the
5036 * specified pixel format.
5038 int drm_format_vert_chroma_subsampling(uint32_t format
)
5041 case DRM_FORMAT_YUV410
:
5042 case DRM_FORMAT_YVU410
:
5044 case DRM_FORMAT_YUV420
:
5045 case DRM_FORMAT_YVU420
:
5046 case DRM_FORMAT_NV12
:
5047 case DRM_FORMAT_NV21
:
5053 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5056 * drm_rotation_simplify() - Try to simplify the rotation
5057 * @rotation: Rotation to be simplified
5058 * @supported_rotations: Supported rotations
5060 * Attempt to simplify the rotation to a form that is supported.
5061 * Eg. if the hardware supports everything except DRM_REFLECT_X
5062 * one could call this function like this:
5064 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5065 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5066 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5068 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5069 * transforms the hardware supports, this function may not
5070 * be able to produce a supported transform, so the caller should
5071 * check the result afterwards.
5073 unsigned int drm_rotation_simplify(unsigned int rotation
,
5074 unsigned int supported_rotations
)
5076 if (rotation
& ~supported_rotations
) {
5077 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5078 rotation
= (rotation
& ~0xf) | BIT((ffs(rotation
& 0xf) + 1) % 4);
5083 EXPORT_SYMBOL(drm_rotation_simplify
);
5086 * drm_mode_config_init - initialize DRM mode_configuration structure
5089 * Initialize @dev's mode_config structure, used for tracking the graphics
5090 * configuration of @dev.
5092 * Since this initializes the modeset locks, no locking is possible. Which is no
5093 * problem, since this should happen single threaded at init time. It is the
5094 * driver's problem to ensure this guarantee.
5097 void drm_mode_config_init(struct drm_device
*dev
)
5099 mutex_init(&dev
->mode_config
.mutex
);
5100 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5101 mutex_init(&dev
->mode_config
.idr_mutex
);
5102 mutex_init(&dev
->mode_config
.fb_lock
);
5103 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5104 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5105 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5106 INIT_LIST_HEAD(&dev
->mode_config
.bridge_list
);
5107 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5108 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5109 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5110 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5111 idr_init(&dev
->mode_config
.crtc_idr
);
5113 drm_modeset_lock_all(dev
);
5114 drm_mode_create_standard_connector_properties(dev
);
5115 drm_mode_create_standard_plane_properties(dev
);
5116 drm_modeset_unlock_all(dev
);
5118 /* Just to be sure */
5119 dev
->mode_config
.num_fb
= 0;
5120 dev
->mode_config
.num_connector
= 0;
5121 dev
->mode_config
.num_crtc
= 0;
5122 dev
->mode_config
.num_encoder
= 0;
5123 dev
->mode_config
.num_overlay_plane
= 0;
5124 dev
->mode_config
.num_total_plane
= 0;
5126 EXPORT_SYMBOL(drm_mode_config_init
);
5129 * drm_mode_config_cleanup - free up DRM mode_config info
5132 * Free up all the connectors and CRTCs associated with this DRM device, then
5133 * free up the framebuffers and associated buffer objects.
5135 * Note that since this /should/ happen single-threaded at driver/device
5136 * teardown time, no locking is required. It's the driver's job to ensure that
5137 * this guarantee actually holds true.
5139 * FIXME: cleanup any dangling user buffer objects too
5141 void drm_mode_config_cleanup(struct drm_device
*dev
)
5143 struct drm_connector
*connector
, *ot
;
5144 struct drm_crtc
*crtc
, *ct
;
5145 struct drm_encoder
*encoder
, *enct
;
5146 struct drm_bridge
*bridge
, *brt
;
5147 struct drm_framebuffer
*fb
, *fbt
;
5148 struct drm_property
*property
, *pt
;
5149 struct drm_property_blob
*blob
, *bt
;
5150 struct drm_plane
*plane
, *plt
;
5152 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5154 encoder
->funcs
->destroy(encoder
);
5157 list_for_each_entry_safe(bridge
, brt
,
5158 &dev
->mode_config
.bridge_list
, head
) {
5159 bridge
->funcs
->destroy(bridge
);
5162 list_for_each_entry_safe(connector
, ot
,
5163 &dev
->mode_config
.connector_list
, head
) {
5164 connector
->funcs
->destroy(connector
);
5167 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5169 drm_property_destroy(dev
, property
);
5172 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5174 drm_property_destroy_blob(dev
, blob
);
5178 * Single-threaded teardown context, so it's not required to grab the
5179 * fb_lock to protect against concurrent fb_list access. Contrary, it
5180 * would actually deadlock with the drm_framebuffer_cleanup function.
5182 * Also, if there are any framebuffers left, that's a driver leak now,
5183 * so politely WARN about this.
5185 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5186 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5187 drm_framebuffer_remove(fb
);
5190 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5192 plane
->funcs
->destroy(plane
);
5195 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5196 crtc
->funcs
->destroy(crtc
);
5199 idr_destroy(&dev
->mode_config
.crtc_idr
);
5200 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5202 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5204 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5205 unsigned int supported_rotations
)
5207 static const struct drm_prop_enum_list props
[] = {
5208 { DRM_ROTATE_0
, "rotate-0" },
5209 { DRM_ROTATE_90
, "rotate-90" },
5210 { DRM_ROTATE_180
, "rotate-180" },
5211 { DRM_ROTATE_270
, "rotate-270" },
5212 { DRM_REFLECT_X
, "reflect-x" },
5213 { DRM_REFLECT_Y
, "reflect-y" },
5216 return drm_property_create_bitmask(dev
, 0, "rotation",
5217 props
, ARRAY_SIZE(props
),
5218 supported_rotations
);
5220 EXPORT_SYMBOL(drm_mode_create_rotation_property
);