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
))
1971 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
1973 /* For atomic drivers only state objects are synchronously updated and
1974 * protected by modeset locks, so check those first. */
1975 if (connector
->state
)
1976 return connector
->state
->best_encoder
;
1977 return connector
->encoder
;
1981 * drm_mode_getconnector - get connector configuration
1982 * @dev: drm device for the ioctl
1983 * @data: data pointer for the ioctl
1984 * @file_priv: drm file for the ioctl call
1986 * Construct a connector configuration structure to return to the user.
1988 * Called by the user via ioctl.
1991 * Zero on success, negative errno on failure.
1993 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
1994 struct drm_file
*file_priv
)
1996 struct drm_mode_get_connector
*out_resp
= data
;
1997 struct drm_connector
*connector
;
1998 struct drm_encoder
*encoder
;
1999 struct drm_display_mode
*mode
;
2001 int props_count
= 0;
2002 int encoders_count
= 0;
2006 struct drm_mode_modeinfo u_mode
;
2007 struct drm_mode_modeinfo __user
*mode_ptr
;
2008 uint32_t __user
*prop_ptr
;
2009 uint64_t __user
*prop_values
;
2010 uint32_t __user
*encoder_ptr
;
2012 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2015 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
2017 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp
->connector_id
);
2019 mutex_lock(&dev
->mode_config
.mutex
);
2021 connector
= drm_connector_find(dev
, out_resp
->connector_id
);
2027 props_count
= connector
->properties
.count
;
2029 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2030 if (connector
->encoder_ids
[i
] != 0) {
2035 if (out_resp
->count_modes
== 0) {
2036 connector
->funcs
->fill_modes(connector
,
2037 dev
->mode_config
.max_width
,
2038 dev
->mode_config
.max_height
);
2041 /* delayed so we get modes regardless of pre-fill_modes state */
2042 list_for_each_entry(mode
, &connector
->modes
, head
)
2043 if (drm_mode_expose_to_userspace(mode
, file_priv
))
2046 out_resp
->connector_id
= connector
->base
.id
;
2047 out_resp
->connector_type
= connector
->connector_type
;
2048 out_resp
->connector_type_id
= connector
->connector_type_id
;
2049 out_resp
->mm_width
= connector
->display_info
.width_mm
;
2050 out_resp
->mm_height
= connector
->display_info
.height_mm
;
2051 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
2052 out_resp
->connection
= connector
->status
;
2053 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2055 encoder
= drm_connector_get_encoder(connector
);
2057 out_resp
->encoder_id
= encoder
->base
.id
;
2059 out_resp
->encoder_id
= 0;
2060 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2063 * This ioctl is called twice, once to determine how much space is
2064 * needed, and the 2nd time to fill it.
2066 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
2068 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
2069 list_for_each_entry(mode
, &connector
->modes
, head
) {
2070 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
2073 drm_crtc_convert_to_umode(&u_mode
, mode
);
2074 if (copy_to_user(mode_ptr
+ copied
,
2075 &u_mode
, sizeof(u_mode
))) {
2082 out_resp
->count_modes
= mode_count
;
2084 if ((out_resp
->count_props
>= props_count
) && props_count
) {
2086 prop_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
);
2087 prop_values
= (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
);
2088 for (i
= 0; i
< connector
->properties
.count
; i
++) {
2089 if (put_user(connector
->properties
.ids
[i
],
2090 prop_ptr
+ copied
)) {
2095 if (put_user(connector
->properties
.values
[i
],
2096 prop_values
+ copied
)) {
2103 out_resp
->count_props
= props_count
;
2105 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
2107 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
2108 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
2109 if (connector
->encoder_ids
[i
] != 0) {
2110 if (put_user(connector
->encoder_ids
[i
],
2111 encoder_ptr
+ copied
)) {
2119 out_resp
->count_encoders
= encoders_count
;
2122 mutex_unlock(&dev
->mode_config
.mutex
);
2127 static struct drm_crtc
*drm_encoder_get_crtc(struct drm_encoder
*encoder
)
2129 struct drm_connector
*connector
;
2130 struct drm_device
*dev
= encoder
->dev
;
2131 bool uses_atomic
= false;
2133 /* For atomic drivers only state objects are synchronously updated and
2134 * protected by modeset locks, so check those first. */
2135 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
2136 if (!connector
->state
)
2141 if (connector
->state
->best_encoder
!= encoder
)
2144 return connector
->state
->crtc
;
2147 /* Don't return stale data (e.g. pending async disable). */
2151 return encoder
->crtc
;
2155 * drm_mode_getencoder - get encoder configuration
2156 * @dev: drm device for the ioctl
2157 * @data: data pointer for the ioctl
2158 * @file_priv: drm file for the ioctl call
2160 * Construct a encoder configuration structure to return to the user.
2162 * Called by the user via ioctl.
2165 * Zero on success, negative errno on failure.
2167 int drm_mode_getencoder(struct drm_device
*dev
, void *data
,
2168 struct drm_file
*file_priv
)
2170 struct drm_mode_get_encoder
*enc_resp
= data
;
2171 struct drm_encoder
*encoder
;
2172 struct drm_crtc
*crtc
;
2174 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2177 encoder
= drm_encoder_find(dev
, enc_resp
->encoder_id
);
2181 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
2182 crtc
= drm_encoder_get_crtc(encoder
);
2184 enc_resp
->crtc_id
= crtc
->base
.id
;
2185 else if (encoder
->crtc
)
2186 enc_resp
->crtc_id
= encoder
->crtc
->base
.id
;
2188 enc_resp
->crtc_id
= 0;
2189 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
2191 enc_resp
->encoder_type
= encoder
->encoder_type
;
2192 enc_resp
->encoder_id
= encoder
->base
.id
;
2193 enc_resp
->possible_crtcs
= encoder
->possible_crtcs
;
2194 enc_resp
->possible_clones
= encoder
->possible_clones
;
2200 * drm_mode_getplane_res - enumerate all plane resources
2203 * @file_priv: DRM file info
2205 * Construct a list of plane ids to return to the user.
2207 * Called by the user via ioctl.
2210 * Zero on success, negative errno on failure.
2212 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2213 struct drm_file
*file_priv
)
2215 struct drm_mode_get_plane_res
*plane_resp
= data
;
2216 struct drm_mode_config
*config
;
2217 struct drm_plane
*plane
;
2218 uint32_t __user
*plane_ptr
;
2220 unsigned num_planes
;
2222 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2225 config
= &dev
->mode_config
;
2227 if (file_priv
->universal_planes
)
2228 num_planes
= config
->num_total_plane
;
2230 num_planes
= config
->num_overlay_plane
;
2233 * This ioctl is called twice, once to determine how much space is
2234 * needed, and the 2nd time to fill it.
2237 (plane_resp
->count_planes
>= num_planes
)) {
2238 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
2240 /* Plane lists are invariant, no locking needed. */
2241 list_for_each_entry(plane
, &config
->plane_list
, head
) {
2243 * Unless userspace set the 'universal planes'
2244 * capability bit, only advertise overlays.
2246 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
2247 !file_priv
->universal_planes
)
2250 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
2255 plane_resp
->count_planes
= num_planes
;
2261 * drm_mode_getplane - get plane configuration
2264 * @file_priv: DRM file info
2266 * Construct a plane configuration structure to return to the user.
2268 * Called by the user via ioctl.
2271 * Zero on success, negative errno on failure.
2273 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
2274 struct drm_file
*file_priv
)
2276 struct drm_mode_get_plane
*plane_resp
= data
;
2277 struct drm_plane
*plane
;
2278 uint32_t __user
*format_ptr
;
2280 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2283 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
2287 drm_modeset_lock(&plane
->mutex
, NULL
);
2289 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
2291 plane_resp
->crtc_id
= 0;
2294 plane_resp
->fb_id
= plane
->fb
->base
.id
;
2296 plane_resp
->fb_id
= 0;
2297 drm_modeset_unlock(&plane
->mutex
);
2299 plane_resp
->plane_id
= plane
->base
.id
;
2300 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
2301 plane_resp
->gamma_size
= 0;
2304 * This ioctl is called twice, once to determine how much space is
2305 * needed, and the 2nd time to fill it.
2307 if (plane
->format_count
&&
2308 (plane_resp
->count_format_types
>= plane
->format_count
)) {
2309 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
2310 if (copy_to_user(format_ptr
,
2311 plane
->format_types
,
2312 sizeof(uint32_t) * plane
->format_count
)) {
2316 plane_resp
->count_format_types
= plane
->format_count
;
2322 * setplane_internal - setplane handler for internal callers
2324 * Note that we assume an extra reference has already been taken on fb. If the
2325 * update fails, this reference will be dropped before return; if it succeeds,
2326 * the previous framebuffer (if any) will be unreferenced instead.
2328 * src_{x,y,w,h} are provided in 16.16 fixed point format
2330 static int __setplane_internal(struct drm_plane
*plane
,
2331 struct drm_crtc
*crtc
,
2332 struct drm_framebuffer
*fb
,
2333 int32_t crtc_x
, int32_t crtc_y
,
2334 uint32_t crtc_w
, uint32_t crtc_h
,
2335 /* src_{x,y,w,h} values are 16.16 fixed point */
2336 uint32_t src_x
, uint32_t src_y
,
2337 uint32_t src_w
, uint32_t src_h
)
2340 unsigned int fb_width
, fb_height
;
2343 /* No fb means shut it down */
2345 plane
->old_fb
= plane
->fb
;
2346 ret
= plane
->funcs
->disable_plane(plane
);
2351 plane
->old_fb
= NULL
;
2356 /* Check whether this plane is usable on this CRTC */
2357 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
2358 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2363 /* Check whether this plane supports the fb pixel format. */
2364 for (i
= 0; i
< plane
->format_count
; i
++)
2365 if (fb
->pixel_format
== plane
->format_types
[i
])
2367 if (i
== plane
->format_count
) {
2368 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2369 drm_get_format_name(fb
->pixel_format
));
2374 fb_width
= fb
->width
<< 16;
2375 fb_height
= fb
->height
<< 16;
2377 /* Make sure source coordinates are inside the fb. */
2378 if (src_w
> fb_width
||
2379 src_x
> fb_width
- src_w
||
2380 src_h
> fb_height
||
2381 src_y
> fb_height
- src_h
) {
2382 DRM_DEBUG_KMS("Invalid source coordinates "
2383 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2384 src_w
>> 16, ((src_w
& 0xffff) * 15625) >> 10,
2385 src_h
>> 16, ((src_h
& 0xffff) * 15625) >> 10,
2386 src_x
>> 16, ((src_x
& 0xffff) * 15625) >> 10,
2387 src_y
>> 16, ((src_y
& 0xffff) * 15625) >> 10);
2392 plane
->old_fb
= plane
->fb
;
2393 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
2394 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2395 src_x
, src_y
, src_w
, src_h
);
2401 plane
->old_fb
= NULL
;
2406 drm_framebuffer_unreference(fb
);
2408 drm_framebuffer_unreference(plane
->old_fb
);
2409 plane
->old_fb
= NULL
;
2414 static int setplane_internal(struct drm_plane
*plane
,
2415 struct drm_crtc
*crtc
,
2416 struct drm_framebuffer
*fb
,
2417 int32_t crtc_x
, int32_t crtc_y
,
2418 uint32_t crtc_w
, uint32_t crtc_h
,
2419 /* src_{x,y,w,h} values are 16.16 fixed point */
2420 uint32_t src_x
, uint32_t src_y
,
2421 uint32_t src_w
, uint32_t src_h
)
2425 drm_modeset_lock_all(plane
->dev
);
2426 ret
= __setplane_internal(plane
, crtc
, fb
,
2427 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2428 src_x
, src_y
, src_w
, src_h
);
2429 drm_modeset_unlock_all(plane
->dev
);
2435 * drm_mode_setplane - configure a plane's configuration
2437 * @data: ioctl data*
2438 * @file_priv: DRM file info
2440 * Set plane configuration, including placement, fb, scaling, and other factors.
2441 * Or pass a NULL fb to disable (planes may be disabled without providing a
2445 * Zero on success, negative errno on failure.
2447 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
2448 struct drm_file
*file_priv
)
2450 struct drm_mode_set_plane
*plane_req
= data
;
2451 struct drm_plane
*plane
;
2452 struct drm_crtc
*crtc
= NULL
;
2453 struct drm_framebuffer
*fb
= NULL
;
2455 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2458 /* Give drivers some help against integer overflows */
2459 if (plane_req
->crtc_w
> INT_MAX
||
2460 plane_req
->crtc_x
> INT_MAX
- (int32_t) plane_req
->crtc_w
||
2461 plane_req
->crtc_h
> INT_MAX
||
2462 plane_req
->crtc_y
> INT_MAX
- (int32_t) plane_req
->crtc_h
) {
2463 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2464 plane_req
->crtc_w
, plane_req
->crtc_h
,
2465 plane_req
->crtc_x
, plane_req
->crtc_y
);
2470 * First, find the plane, crtc, and fb objects. If not available,
2471 * we don't bother to call the driver.
2473 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
2475 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2476 plane_req
->plane_id
);
2480 if (plane_req
->fb_id
) {
2481 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
2483 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2488 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
2490 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2491 plane_req
->crtc_id
);
2497 * setplane_internal will take care of deref'ing either the old or new
2498 * framebuffer depending on success.
2500 return setplane_internal(plane
, crtc
, fb
,
2501 plane_req
->crtc_x
, plane_req
->crtc_y
,
2502 plane_req
->crtc_w
, plane_req
->crtc_h
,
2503 plane_req
->src_x
, plane_req
->src_y
,
2504 plane_req
->src_w
, plane_req
->src_h
);
2508 * drm_mode_set_config_internal - helper to call ->set_config
2509 * @set: modeset config to set
2511 * This is a little helper to wrap internal calls to the ->set_config driver
2512 * interface. The only thing it adds is correct refcounting dance.
2515 * Zero on success, negative errno on failure.
2517 int drm_mode_set_config_internal(struct drm_mode_set
*set
)
2519 struct drm_crtc
*crtc
= set
->crtc
;
2520 struct drm_framebuffer
*fb
;
2521 struct drm_crtc
*tmp
;
2525 * NOTE: ->set_config can also disable other crtcs (if we steal all
2526 * connectors from it), hence we need to refcount the fbs across all
2527 * crtcs. Atomic modeset will have saner semantics ...
2529 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
)
2530 tmp
->primary
->old_fb
= tmp
->primary
->fb
;
2534 ret
= crtc
->funcs
->set_config(set
);
2536 crtc
->primary
->crtc
= crtc
;
2537 crtc
->primary
->fb
= fb
;
2540 list_for_each_entry(tmp
, &crtc
->dev
->mode_config
.crtc_list
, head
) {
2541 if (tmp
->primary
->fb
)
2542 drm_framebuffer_reference(tmp
->primary
->fb
);
2543 if (tmp
->primary
->old_fb
)
2544 drm_framebuffer_unreference(tmp
->primary
->old_fb
);
2545 tmp
->primary
->old_fb
= NULL
;
2550 EXPORT_SYMBOL(drm_mode_set_config_internal
);
2553 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2555 * @crtc: CRTC that framebuffer will be displayed on
2558 * @mode: mode that framebuffer will be displayed under
2559 * @fb: framebuffer to check size of
2561 int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2563 const struct drm_display_mode
*mode
,
2564 const struct drm_framebuffer
*fb
)
2567 int hdisplay
, vdisplay
;
2569 hdisplay
= mode
->hdisplay
;
2570 vdisplay
= mode
->vdisplay
;
2572 if (drm_mode_is_stereo(mode
)) {
2573 struct drm_display_mode adjusted
= *mode
;
2575 drm_mode_set_crtcinfo(&adjusted
, CRTC_STEREO_DOUBLE
);
2576 hdisplay
= adjusted
.crtc_hdisplay
;
2577 vdisplay
= adjusted
.crtc_vdisplay
;
2580 if (crtc
->invert_dimensions
)
2581 swap(hdisplay
, vdisplay
);
2583 if (hdisplay
> fb
->width
||
2584 vdisplay
> fb
->height
||
2585 x
> fb
->width
- hdisplay
||
2586 y
> fb
->height
- vdisplay
) {
2587 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2588 fb
->width
, fb
->height
, hdisplay
, vdisplay
, x
, y
,
2589 crtc
->invert_dimensions
? " (inverted)" : "");
2595 EXPORT_SYMBOL(drm_crtc_check_viewport
);
2598 * drm_mode_setcrtc - set CRTC configuration
2599 * @dev: drm device for the ioctl
2600 * @data: data pointer for the ioctl
2601 * @file_priv: drm file for the ioctl call
2603 * Build a new CRTC configuration based on user request.
2605 * Called by the user via ioctl.
2608 * Zero on success, negative errno on failure.
2610 int drm_mode_setcrtc(struct drm_device
*dev
, void *data
,
2611 struct drm_file
*file_priv
)
2613 struct drm_mode_config
*config
= &dev
->mode_config
;
2614 struct drm_mode_crtc
*crtc_req
= data
;
2615 struct drm_crtc
*crtc
;
2616 struct drm_connector
**connector_set
= NULL
, *connector
;
2617 struct drm_framebuffer
*fb
= NULL
;
2618 struct drm_display_mode
*mode
= NULL
;
2619 struct drm_mode_set set
;
2620 uint32_t __user
*set_connectors_ptr
;
2624 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2627 /* For some reason crtc x/y offsets are signed internally. */
2628 if (crtc_req
->x
> INT_MAX
|| crtc_req
->y
> INT_MAX
)
2631 drm_modeset_lock_all(dev
);
2632 crtc
= drm_crtc_find(dev
, crtc_req
->crtc_id
);
2634 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req
->crtc_id
);
2638 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc
->base
.id
);
2640 if (crtc_req
->mode_valid
) {
2641 /* If we have a mode we need a framebuffer. */
2642 /* If we pass -1, set the mode with the currently bound fb */
2643 if (crtc_req
->fb_id
== -1) {
2644 if (!crtc
->primary
->fb
) {
2645 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2649 fb
= crtc
->primary
->fb
;
2650 /* Make refcounting symmetric with the lookup path. */
2651 drm_framebuffer_reference(fb
);
2653 fb
= drm_framebuffer_lookup(dev
, crtc_req
->fb_id
);
2655 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2662 mode
= drm_mode_create(dev
);
2668 ret
= drm_crtc_convert_umode(mode
, &crtc_req
->mode
);
2670 DRM_DEBUG_KMS("Invalid mode\n");
2674 drm_mode_set_crtcinfo(mode
, CRTC_INTERLACE_HALVE_V
);
2676 ret
= drm_crtc_check_viewport(crtc
, crtc_req
->x
, crtc_req
->y
,
2683 if (crtc_req
->count_connectors
== 0 && mode
) {
2684 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2689 if (crtc_req
->count_connectors
> 0 && (!mode
|| !fb
)) {
2690 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2691 crtc_req
->count_connectors
);
2696 if (crtc_req
->count_connectors
> 0) {
2699 /* Avoid unbounded kernel memory allocation */
2700 if (crtc_req
->count_connectors
> config
->num_connector
) {
2705 connector_set
= kmalloc(crtc_req
->count_connectors
*
2706 sizeof(struct drm_connector
*),
2708 if (!connector_set
) {
2713 for (i
= 0; i
< crtc_req
->count_connectors
; i
++) {
2714 set_connectors_ptr
= (uint32_t __user
*)(unsigned long)crtc_req
->set_connectors_ptr
;
2715 if (get_user(out_id
, &set_connectors_ptr
[i
])) {
2720 connector
= drm_connector_find(dev
, out_id
);
2722 DRM_DEBUG_KMS("Connector id %d unknown\n",
2727 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2731 connector_set
[i
] = connector
;
2736 set
.x
= crtc_req
->x
;
2737 set
.y
= crtc_req
->y
;
2739 set
.connectors
= connector_set
;
2740 set
.num_connectors
= crtc_req
->count_connectors
;
2742 ret
= drm_mode_set_config_internal(&set
);
2746 drm_framebuffer_unreference(fb
);
2748 kfree(connector_set
);
2749 drm_mode_destroy(dev
, mode
);
2750 drm_modeset_unlock_all(dev
);
2755 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2756 * universal plane handler call
2757 * @crtc: crtc to update cursor for
2758 * @req: data pointer for the ioctl
2759 * @file_priv: drm file for the ioctl call
2761 * Legacy cursor ioctl's work directly with driver buffer handles. To
2762 * translate legacy ioctl calls into universal plane handler calls, we need to
2763 * wrap the native buffer handle in a drm_framebuffer.
2765 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2766 * buffer with a pitch of 4*width; the universal plane interface should be used
2767 * directly in cases where the hardware can support other buffer settings and
2768 * userspace wants to make use of these capabilities.
2771 * Zero on success, negative errno on failure.
2773 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
2774 struct drm_mode_cursor2
*req
,
2775 struct drm_file
*file_priv
)
2777 struct drm_device
*dev
= crtc
->dev
;
2778 struct drm_framebuffer
*fb
= NULL
;
2779 struct drm_mode_fb_cmd2 fbreq
= {
2780 .width
= req
->width
,
2781 .height
= req
->height
,
2782 .pixel_format
= DRM_FORMAT_ARGB8888
,
2783 .pitches
= { req
->width
* 4 },
2784 .handles
= { req
->handle
},
2786 int32_t crtc_x
, crtc_y
;
2787 uint32_t crtc_w
= 0, crtc_h
= 0;
2788 uint32_t src_w
= 0, src_h
= 0;
2791 BUG_ON(!crtc
->cursor
);
2792 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
2795 * Obtain fb we'll be using (either new or existing) and take an extra
2796 * reference to it if fb != null. setplane will take care of dropping
2797 * the reference if the plane update fails.
2799 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2801 fb
= add_framebuffer_internal(dev
, &fbreq
, file_priv
);
2803 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2807 drm_framebuffer_reference(fb
);
2812 fb
= crtc
->cursor
->fb
;
2814 drm_framebuffer_reference(fb
);
2817 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2821 crtc_x
= crtc
->cursor_x
;
2822 crtc_y
= crtc
->cursor_y
;
2827 crtc_h
= fb
->height
;
2828 src_w
= fb
->width
<< 16;
2829 src_h
= fb
->height
<< 16;
2833 * setplane_internal will take care of deref'ing either the old or new
2834 * framebuffer depending on success.
2836 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
2837 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
2838 0, 0, src_w
, src_h
);
2840 /* Update successful; save new cursor position, if necessary */
2841 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2842 crtc
->cursor_x
= req
->x
;
2843 crtc
->cursor_y
= req
->y
;
2849 static int drm_mode_cursor_common(struct drm_device
*dev
,
2850 struct drm_mode_cursor2
*req
,
2851 struct drm_file
*file_priv
)
2853 struct drm_crtc
*crtc
;
2856 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
2859 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
2862 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
2864 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
2869 * If this crtc has a universal cursor plane, call that plane's update
2870 * handler rather than using legacy cursor handlers.
2872 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
2874 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
2878 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
2879 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
2883 /* Turns off the cursor if handle is 0 */
2884 if (crtc
->funcs
->cursor_set2
)
2885 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
2886 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
2888 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
2889 req
->width
, req
->height
);
2892 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
2893 if (crtc
->funcs
->cursor_move
) {
2894 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
2901 drm_modeset_unlock_crtc(crtc
);
2909 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2910 * @dev: drm device for the ioctl
2911 * @data: data pointer for the ioctl
2912 * @file_priv: drm file for the ioctl call
2914 * Set the cursor configuration based on user request.
2916 * Called by the user via ioctl.
2919 * Zero on success, negative errno on failure.
2921 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
2922 void *data
, struct drm_file
*file_priv
)
2924 struct drm_mode_cursor
*req
= data
;
2925 struct drm_mode_cursor2 new_req
;
2927 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
2928 new_req
.hot_x
= new_req
.hot_y
= 0;
2930 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
2934 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2935 * @dev: drm device for the ioctl
2936 * @data: data pointer for the ioctl
2937 * @file_priv: drm file for the ioctl call
2939 * Set the cursor configuration based on user request. This implements the 2nd
2940 * version of the cursor ioctl, which allows userspace to additionally specify
2941 * the hotspot of the pointer.
2943 * Called by the user via ioctl.
2946 * Zero on success, negative errno on failure.
2948 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
2949 void *data
, struct drm_file
*file_priv
)
2951 struct drm_mode_cursor2
*req
= data
;
2952 return drm_mode_cursor_common(dev
, req
, file_priv
);
2956 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2957 * @bpp: bits per pixels
2958 * @depth: bit depth per pixel
2960 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2961 * Useful in fbdev emulation code, since that deals in those values.
2963 uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
)
2969 fmt
= DRM_FORMAT_C8
;
2973 fmt
= DRM_FORMAT_XRGB1555
;
2975 fmt
= DRM_FORMAT_RGB565
;
2978 fmt
= DRM_FORMAT_RGB888
;
2982 fmt
= DRM_FORMAT_XRGB8888
;
2983 else if (depth
== 30)
2984 fmt
= DRM_FORMAT_XRGB2101010
;
2986 fmt
= DRM_FORMAT_ARGB8888
;
2989 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2990 fmt
= DRM_FORMAT_XRGB8888
;
2996 EXPORT_SYMBOL(drm_mode_legacy_fb_format
);
2999 * drm_mode_addfb - add an FB to the graphics configuration
3000 * @dev: drm device for the ioctl
3001 * @data: data pointer for the ioctl
3002 * @file_priv: drm file for the ioctl call
3004 * Add a new FB to the specified CRTC, given a user request. This is the
3005 * original addfb ioctl which only supported RGB formats.
3007 * Called by the user via ioctl.
3010 * Zero on success, negative errno on failure.
3012 int drm_mode_addfb(struct drm_device
*dev
,
3013 void *data
, struct drm_file
*file_priv
)
3015 struct drm_mode_fb_cmd
*or = data
;
3016 struct drm_mode_fb_cmd2 r
= {};
3019 /* convert to new format and call new ioctl */
3020 r
.fb_id
= or->fb_id
;
3021 r
.width
= or->width
;
3022 r
.height
= or->height
;
3023 r
.pitches
[0] = or->pitch
;
3024 r
.pixel_format
= drm_mode_legacy_fb_format(or->bpp
, or->depth
);
3025 r
.handles
[0] = or->handle
;
3027 ret
= drm_mode_addfb2(dev
, &r
, file_priv
);
3031 or->fb_id
= r
.fb_id
;
3036 static int format_check(const struct drm_mode_fb_cmd2
*r
)
3038 uint32_t format
= r
->pixel_format
& ~DRM_FORMAT_BIG_ENDIAN
;
3042 case DRM_FORMAT_RGB332
:
3043 case DRM_FORMAT_BGR233
:
3044 case DRM_FORMAT_XRGB4444
:
3045 case DRM_FORMAT_XBGR4444
:
3046 case DRM_FORMAT_RGBX4444
:
3047 case DRM_FORMAT_BGRX4444
:
3048 case DRM_FORMAT_ARGB4444
:
3049 case DRM_FORMAT_ABGR4444
:
3050 case DRM_FORMAT_RGBA4444
:
3051 case DRM_FORMAT_BGRA4444
:
3052 case DRM_FORMAT_XRGB1555
:
3053 case DRM_FORMAT_XBGR1555
:
3054 case DRM_FORMAT_RGBX5551
:
3055 case DRM_FORMAT_BGRX5551
:
3056 case DRM_FORMAT_ARGB1555
:
3057 case DRM_FORMAT_ABGR1555
:
3058 case DRM_FORMAT_RGBA5551
:
3059 case DRM_FORMAT_BGRA5551
:
3060 case DRM_FORMAT_RGB565
:
3061 case DRM_FORMAT_BGR565
:
3062 case DRM_FORMAT_RGB888
:
3063 case DRM_FORMAT_BGR888
:
3064 case DRM_FORMAT_XRGB8888
:
3065 case DRM_FORMAT_XBGR8888
:
3066 case DRM_FORMAT_RGBX8888
:
3067 case DRM_FORMAT_BGRX8888
:
3068 case DRM_FORMAT_ARGB8888
:
3069 case DRM_FORMAT_ABGR8888
:
3070 case DRM_FORMAT_RGBA8888
:
3071 case DRM_FORMAT_BGRA8888
:
3072 case DRM_FORMAT_XRGB2101010
:
3073 case DRM_FORMAT_XBGR2101010
:
3074 case DRM_FORMAT_RGBX1010102
:
3075 case DRM_FORMAT_BGRX1010102
:
3076 case DRM_FORMAT_ARGB2101010
:
3077 case DRM_FORMAT_ABGR2101010
:
3078 case DRM_FORMAT_RGBA1010102
:
3079 case DRM_FORMAT_BGRA1010102
:
3080 case DRM_FORMAT_YUYV
:
3081 case DRM_FORMAT_YVYU
:
3082 case DRM_FORMAT_UYVY
:
3083 case DRM_FORMAT_VYUY
:
3084 case DRM_FORMAT_AYUV
:
3085 case DRM_FORMAT_NV12
:
3086 case DRM_FORMAT_NV21
:
3087 case DRM_FORMAT_NV16
:
3088 case DRM_FORMAT_NV61
:
3089 case DRM_FORMAT_NV24
:
3090 case DRM_FORMAT_NV42
:
3091 case DRM_FORMAT_YUV410
:
3092 case DRM_FORMAT_YVU410
:
3093 case DRM_FORMAT_YUV411
:
3094 case DRM_FORMAT_YVU411
:
3095 case DRM_FORMAT_YUV420
:
3096 case DRM_FORMAT_YVU420
:
3097 case DRM_FORMAT_YUV422
:
3098 case DRM_FORMAT_YVU422
:
3099 case DRM_FORMAT_YUV444
:
3100 case DRM_FORMAT_YVU444
:
3103 DRM_DEBUG_KMS("invalid pixel format %s\n",
3104 drm_get_format_name(r
->pixel_format
));
3109 static int framebuffer_check(const struct drm_mode_fb_cmd2
*r
)
3111 int ret
, hsub
, vsub
, num_planes
, i
;
3113 ret
= format_check(r
);
3115 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3116 drm_get_format_name(r
->pixel_format
));
3120 hsub
= drm_format_horz_chroma_subsampling(r
->pixel_format
);
3121 vsub
= drm_format_vert_chroma_subsampling(r
->pixel_format
);
3122 num_planes
= drm_format_num_planes(r
->pixel_format
);
3124 if (r
->width
== 0 || r
->width
% hsub
) {
3125 DRM_DEBUG_KMS("bad framebuffer width %u\n", r
->width
);
3129 if (r
->height
== 0 || r
->height
% vsub
) {
3130 DRM_DEBUG_KMS("bad framebuffer height %u\n", r
->height
);
3134 for (i
= 0; i
< num_planes
; i
++) {
3135 unsigned int width
= r
->width
/ (i
!= 0 ? hsub
: 1);
3136 unsigned int height
= r
->height
/ (i
!= 0 ? vsub
: 1);
3137 unsigned int cpp
= drm_format_plane_cpp(r
->pixel_format
, i
);
3139 if (!r
->handles
[i
]) {
3140 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i
);
3144 if ((uint64_t) width
* cpp
> UINT_MAX
)
3147 if ((uint64_t) height
* r
->pitches
[i
] + r
->offsets
[i
] > UINT_MAX
)
3150 if (r
->pitches
[i
] < width
* cpp
) {
3151 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r
->pitches
[i
], i
);
3159 static struct drm_framebuffer
*add_framebuffer_internal(struct drm_device
*dev
,
3160 struct drm_mode_fb_cmd2
*r
,
3161 struct drm_file
*file_priv
)
3163 struct drm_mode_config
*config
= &dev
->mode_config
;
3164 struct drm_framebuffer
*fb
;
3167 if (r
->flags
& ~DRM_MODE_FB_INTERLACED
) {
3168 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r
->flags
);
3169 return ERR_PTR(-EINVAL
);
3172 if ((config
->min_width
> r
->width
) || (r
->width
> config
->max_width
)) {
3173 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3174 r
->width
, config
->min_width
, config
->max_width
);
3175 return ERR_PTR(-EINVAL
);
3177 if ((config
->min_height
> r
->height
) || (r
->height
> config
->max_height
)) {
3178 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3179 r
->height
, config
->min_height
, config
->max_height
);
3180 return ERR_PTR(-EINVAL
);
3183 ret
= framebuffer_check(r
);
3185 return ERR_PTR(ret
);
3187 fb
= dev
->mode_config
.funcs
->fb_create(dev
, file_priv
, r
);
3189 DRM_DEBUG_KMS("could not create framebuffer\n");
3193 mutex_lock(&file_priv
->fbs_lock
);
3194 r
->fb_id
= fb
->base
.id
;
3195 list_add(&fb
->filp_head
, &file_priv
->fbs
);
3196 DRM_DEBUG_KMS("[FB:%d]\n", fb
->base
.id
);
3197 mutex_unlock(&file_priv
->fbs_lock
);
3203 * drm_mode_addfb2 - add an FB to the graphics configuration
3204 * @dev: drm device for the ioctl
3205 * @data: data pointer for the ioctl
3206 * @file_priv: drm file for the ioctl call
3208 * Add a new FB to the specified CRTC, given a user request with format. This is
3209 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3210 * and uses fourcc codes as pixel format specifiers.
3212 * Called by the user via ioctl.
3215 * Zero on success, negative errno on failure.
3217 int drm_mode_addfb2(struct drm_device
*dev
,
3218 void *data
, struct drm_file
*file_priv
)
3220 struct drm_framebuffer
*fb
;
3222 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3225 fb
= add_framebuffer_internal(dev
, data
, file_priv
);
3233 * drm_mode_rmfb - remove an FB from the configuration
3234 * @dev: drm device for the ioctl
3235 * @data: data pointer for the ioctl
3236 * @file_priv: drm file for the ioctl call
3238 * Remove the FB specified by the user.
3240 * Called by the user via ioctl.
3243 * Zero on success, negative errno on failure.
3245 int drm_mode_rmfb(struct drm_device
*dev
,
3246 void *data
, struct drm_file
*file_priv
)
3248 struct drm_framebuffer
*fb
= NULL
;
3249 struct drm_framebuffer
*fbl
= NULL
;
3250 uint32_t *id
= data
;
3253 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3256 mutex_lock(&file_priv
->fbs_lock
);
3257 mutex_lock(&dev
->mode_config
.fb_lock
);
3258 fb
= __drm_framebuffer_lookup(dev
, *id
);
3262 list_for_each_entry(fbl
, &file_priv
->fbs
, filp_head
)
3268 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3269 __drm_framebuffer_unregister(dev
, fb
);
3271 list_del_init(&fb
->filp_head
);
3272 mutex_unlock(&dev
->mode_config
.fb_lock
);
3273 mutex_unlock(&file_priv
->fbs_lock
);
3275 drm_framebuffer_remove(fb
);
3280 mutex_unlock(&dev
->mode_config
.fb_lock
);
3281 mutex_unlock(&file_priv
->fbs_lock
);
3287 * drm_mode_getfb - get FB info
3288 * @dev: drm device for the ioctl
3289 * @data: data pointer for the ioctl
3290 * @file_priv: drm file for the ioctl call
3292 * Lookup the FB given its ID and return info about it.
3294 * Called by the user via ioctl.
3297 * Zero on success, negative errno on failure.
3299 int drm_mode_getfb(struct drm_device
*dev
,
3300 void *data
, struct drm_file
*file_priv
)
3302 struct drm_mode_fb_cmd
*r
= data
;
3303 struct drm_framebuffer
*fb
;
3306 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3309 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3313 r
->height
= fb
->height
;
3314 r
->width
= fb
->width
;
3315 r
->depth
= fb
->depth
;
3316 r
->bpp
= fb
->bits_per_pixel
;
3317 r
->pitch
= fb
->pitches
[0];
3318 if (fb
->funcs
->create_handle
) {
3319 if (file_priv
->is_master
|| capable(CAP_SYS_ADMIN
) ||
3320 drm_is_control_client(file_priv
)) {
3321 ret
= fb
->funcs
->create_handle(fb
, file_priv
,
3324 /* GET_FB() is an unprivileged ioctl so we must not
3325 * return a buffer-handle to non-master processes! For
3326 * backwards-compatibility reasons, we cannot make
3327 * GET_FB() privileged, so just return an invalid handle
3328 * for non-masters. */
3336 drm_framebuffer_unreference(fb
);
3342 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3343 * @dev: drm device for the ioctl
3344 * @data: data pointer for the ioctl
3345 * @file_priv: drm file for the ioctl call
3347 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3348 * rectangle list. Generic userspace which does frontbuffer rendering must call
3349 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3350 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3352 * Modesetting drivers which always update the frontbuffer do not need to
3353 * implement the corresponding ->dirty framebuffer callback.
3355 * Called by the user via ioctl.
3358 * Zero on success, negative errno on failure.
3360 int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
3361 void *data
, struct drm_file
*file_priv
)
3363 struct drm_clip_rect __user
*clips_ptr
;
3364 struct drm_clip_rect
*clips
= NULL
;
3365 struct drm_mode_fb_dirty_cmd
*r
= data
;
3366 struct drm_framebuffer
*fb
;
3371 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3374 fb
= drm_framebuffer_lookup(dev
, r
->fb_id
);
3378 num_clips
= r
->num_clips
;
3379 clips_ptr
= (struct drm_clip_rect __user
*)(unsigned long)r
->clips_ptr
;
3381 if (!num_clips
!= !clips_ptr
) {
3386 flags
= DRM_MODE_FB_DIRTY_FLAGS
& r
->flags
;
3388 /* If userspace annotates copy, clips must come in pairs */
3389 if (flags
& DRM_MODE_FB_DIRTY_ANNOTATE_COPY
&& (num_clips
% 2)) {
3394 if (num_clips
&& clips_ptr
) {
3395 if (num_clips
< 0 || num_clips
> DRM_MODE_FB_DIRTY_MAX_CLIPS
) {
3399 clips
= kzalloc(num_clips
* sizeof(*clips
), GFP_KERNEL
);
3405 ret
= copy_from_user(clips
, clips_ptr
,
3406 num_clips
* sizeof(*clips
));
3413 if (fb
->funcs
->dirty
) {
3414 ret
= fb
->funcs
->dirty(fb
, file_priv
, flags
, r
->color
,
3423 drm_framebuffer_unreference(fb
);
3430 * drm_fb_release - remove and free the FBs on this file
3431 * @priv: drm file for the ioctl
3433 * Destroy all the FBs associated with @filp.
3435 * Called by the user via ioctl.
3438 * Zero on success, negative errno on failure.
3440 void drm_fb_release(struct drm_file
*priv
)
3442 struct drm_device
*dev
= priv
->minor
->dev
;
3443 struct drm_framebuffer
*fb
, *tfb
;
3446 * When the file gets released that means no one else can access the fb
3447 * list any more, so no need to grab fpriv->fbs_lock. And we need to to
3448 * avoid upsetting lockdep since the universal cursor code adds a
3449 * framebuffer while holding mutex locks.
3451 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3452 * locks is impossible here since no one else but this function can get
3455 list_for_each_entry_safe(fb
, tfb
, &priv
->fbs
, filp_head
) {
3457 mutex_lock(&dev
->mode_config
.fb_lock
);
3458 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3459 __drm_framebuffer_unregister(dev
, fb
);
3460 mutex_unlock(&dev
->mode_config
.fb_lock
);
3462 list_del_init(&fb
->filp_head
);
3464 /* This will also drop the fpriv->fbs reference. */
3465 drm_framebuffer_remove(fb
);
3470 * drm_property_create - create a new property type
3472 * @flags: flags specifying the property type
3473 * @name: name of the property
3474 * @num_values: number of pre-defined values
3476 * This creates a new generic drm property which can then be attached to a drm
3477 * object with drm_object_attach_property. The returned property object must be
3478 * freed with drm_property_destroy.
3480 * Note that the DRM core keeps a per-device list of properties and that, if
3481 * drm_mode_config_cleanup() is called, it will destroy all properties created
3485 * A pointer to the newly created property on success, NULL on failure.
3487 struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
3488 const char *name
, int num_values
)
3490 struct drm_property
*property
= NULL
;
3493 property
= kzalloc(sizeof(struct drm_property
), GFP_KERNEL
);
3497 property
->dev
= dev
;
3500 property
->values
= kzalloc(sizeof(uint64_t)*num_values
, GFP_KERNEL
);
3501 if (!property
->values
)
3505 ret
= drm_mode_object_get(dev
, &property
->base
, DRM_MODE_OBJECT_PROPERTY
);
3509 property
->flags
= flags
;
3510 property
->num_values
= num_values
;
3511 INIT_LIST_HEAD(&property
->enum_list
);
3514 strncpy(property
->name
, name
, DRM_PROP_NAME_LEN
);
3515 property
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3518 list_add_tail(&property
->head
, &dev
->mode_config
.property_list
);
3520 WARN_ON(!drm_property_type_valid(property
));
3524 kfree(property
->values
);
3528 EXPORT_SYMBOL(drm_property_create
);
3531 * drm_property_create_enum - create a new enumeration property type
3533 * @flags: flags specifying the property type
3534 * @name: name of the property
3535 * @props: enumeration lists with property values
3536 * @num_values: number of pre-defined values
3538 * This creates a new generic drm property which can then be attached to a drm
3539 * object with drm_object_attach_property. The returned property object must be
3540 * freed with drm_property_destroy.
3542 * Userspace is only allowed to set one of the predefined values for enumeration
3546 * A pointer to the newly created property on success, NULL on failure.
3548 struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
3550 const struct drm_prop_enum_list
*props
,
3553 struct drm_property
*property
;
3556 flags
|= DRM_MODE_PROP_ENUM
;
3558 property
= drm_property_create(dev
, flags
, name
, num_values
);
3562 for (i
= 0; i
< num_values
; i
++) {
3563 ret
= drm_property_add_enum(property
, i
,
3567 drm_property_destroy(dev
, property
);
3574 EXPORT_SYMBOL(drm_property_create_enum
);
3577 * drm_property_create_bitmask - create a new bitmask property type
3579 * @flags: flags specifying the property type
3580 * @name: name of the property
3581 * @props: enumeration lists with property bitflags
3582 * @num_props: size of the @props array
3583 * @supported_bits: bitmask of all supported enumeration values
3585 * This creates a new bitmask drm property which can then be attached to a drm
3586 * object with drm_object_attach_property. The returned property object must be
3587 * freed with drm_property_destroy.
3589 * Compared to plain enumeration properties userspace is allowed to set any
3590 * or'ed together combination of the predefined property bitflag values
3593 * A pointer to the newly created property on success, NULL on failure.
3595 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
3596 int flags
, const char *name
,
3597 const struct drm_prop_enum_list
*props
,
3599 uint64_t supported_bits
)
3601 struct drm_property
*property
;
3602 int i
, ret
, index
= 0;
3603 int num_values
= hweight64(supported_bits
);
3605 flags
|= DRM_MODE_PROP_BITMASK
;
3607 property
= drm_property_create(dev
, flags
, name
, num_values
);
3610 for (i
= 0; i
< num_props
; i
++) {
3611 if (!(supported_bits
& (1ULL << props
[i
].type
)))
3614 if (WARN_ON(index
>= num_values
)) {
3615 drm_property_destroy(dev
, property
);
3619 ret
= drm_property_add_enum(property
, index
++,
3623 drm_property_destroy(dev
, property
);
3630 EXPORT_SYMBOL(drm_property_create_bitmask
);
3632 static struct drm_property
*property_create_range(struct drm_device
*dev
,
3633 int flags
, const char *name
,
3634 uint64_t min
, uint64_t max
)
3636 struct drm_property
*property
;
3638 property
= drm_property_create(dev
, flags
, name
, 2);
3642 property
->values
[0] = min
;
3643 property
->values
[1] = max
;
3649 * drm_property_create_range - create a new ranged property type
3651 * @flags: flags specifying the property type
3652 * @name: name of the property
3653 * @min: minimum value of the property
3654 * @max: maximum value of the property
3656 * This creates a new generic drm property which can then be attached to a drm
3657 * object with drm_object_attach_property. The returned property object must be
3658 * freed with drm_property_destroy.
3660 * Userspace is allowed to set any integer value in the (min, max) range
3664 * A pointer to the newly created property on success, NULL on failure.
3666 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
3668 uint64_t min
, uint64_t max
)
3670 return property_create_range(dev
, DRM_MODE_PROP_RANGE
| flags
,
3673 EXPORT_SYMBOL(drm_property_create_range
);
3675 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
3676 int flags
, const char *name
,
3677 int64_t min
, int64_t max
)
3679 return property_create_range(dev
, DRM_MODE_PROP_SIGNED_RANGE
| flags
,
3680 name
, I642U64(min
), I642U64(max
));
3682 EXPORT_SYMBOL(drm_property_create_signed_range
);
3684 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
3685 int flags
, const char *name
, uint32_t type
)
3687 struct drm_property
*property
;
3689 flags
|= DRM_MODE_PROP_OBJECT
;
3691 property
= drm_property_create(dev
, flags
, name
, 1);
3695 property
->values
[0] = type
;
3699 EXPORT_SYMBOL(drm_property_create_object
);
3702 * drm_property_add_enum - add a possible value to an enumeration property
3703 * @property: enumeration property to change
3704 * @index: index of the new enumeration
3705 * @value: value of the new enumeration
3706 * @name: symbolic name of the new enumeration
3708 * This functions adds enumerations to a property.
3710 * It's use is deprecated, drivers should use one of the more specific helpers
3711 * to directly create the property with all enumerations already attached.
3714 * Zero on success, error code on failure.
3716 int drm_property_add_enum(struct drm_property
*property
, int index
,
3717 uint64_t value
, const char *name
)
3719 struct drm_property_enum
*prop_enum
;
3721 if (!(drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3722 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)))
3726 * Bitmask enum properties have the additional constraint of values
3729 if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
) &&
3733 if (!list_empty(&property
->enum_list
)) {
3734 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3735 if (prop_enum
->value
== value
) {
3736 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3737 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3743 prop_enum
= kzalloc(sizeof(struct drm_property_enum
), GFP_KERNEL
);
3747 strncpy(prop_enum
->name
, name
, DRM_PROP_NAME_LEN
);
3748 prop_enum
->name
[DRM_PROP_NAME_LEN
-1] = '\0';
3749 prop_enum
->value
= value
;
3751 property
->values
[index
] = value
;
3752 list_add_tail(&prop_enum
->head
, &property
->enum_list
);
3755 EXPORT_SYMBOL(drm_property_add_enum
);
3758 * drm_property_destroy - destroy a drm property
3760 * @property: property to destry
3762 * This function frees a property including any attached resources like
3763 * enumeration values.
3765 void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
)
3767 struct drm_property_enum
*prop_enum
, *pt
;
3769 list_for_each_entry_safe(prop_enum
, pt
, &property
->enum_list
, head
) {
3770 list_del(&prop_enum
->head
);
3774 if (property
->num_values
)
3775 kfree(property
->values
);
3776 drm_mode_object_put(dev
, &property
->base
);
3777 list_del(&property
->head
);
3780 EXPORT_SYMBOL(drm_property_destroy
);
3783 * drm_object_attach_property - attach a property to a modeset object
3784 * @obj: drm modeset object
3785 * @property: property to attach
3786 * @init_val: initial value of the property
3788 * This attaches the given property to the modeset object with the given initial
3789 * value. Currently this function cannot fail since the properties are stored in
3790 * a statically sized array.
3792 void drm_object_attach_property(struct drm_mode_object
*obj
,
3793 struct drm_property
*property
,
3796 int count
= obj
->properties
->count
;
3798 if (count
== DRM_OBJECT_MAX_PROPERTY
) {
3799 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3800 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3801 "you see this message on the same object type.\n",
3806 obj
->properties
->ids
[count
] = property
->base
.id
;
3807 obj
->properties
->values
[count
] = init_val
;
3808 obj
->properties
->count
++;
3810 EXPORT_SYMBOL(drm_object_attach_property
);
3813 * drm_object_property_set_value - set the value of a property
3814 * @obj: drm mode object to set property value for
3815 * @property: property to set
3816 * @val: value the property should be set to
3818 * This functions sets a given property on a given object. This function only
3819 * changes the software state of the property, it does not call into the
3820 * driver's ->set_property callback.
3823 * Zero on success, error code on failure.
3825 int drm_object_property_set_value(struct drm_mode_object
*obj
,
3826 struct drm_property
*property
, uint64_t val
)
3830 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3831 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3832 obj
->properties
->values
[i
] = val
;
3839 EXPORT_SYMBOL(drm_object_property_set_value
);
3842 * drm_object_property_get_value - retrieve the value of a property
3843 * @obj: drm mode object to get property value from
3844 * @property: property to retrieve
3845 * @val: storage for the property value
3847 * This function retrieves the softare state of the given property for the given
3848 * property. Since there is no driver callback to retrieve the current property
3849 * value this might be out of sync with the hardware, depending upon the driver
3853 * Zero on success, error code on failure.
3855 int drm_object_property_get_value(struct drm_mode_object
*obj
,
3856 struct drm_property
*property
, uint64_t *val
)
3860 for (i
= 0; i
< obj
->properties
->count
; i
++) {
3861 if (obj
->properties
->ids
[i
] == property
->base
.id
) {
3862 *val
= obj
->properties
->values
[i
];
3869 EXPORT_SYMBOL(drm_object_property_get_value
);
3872 * drm_mode_getproperty_ioctl - get the property metadata
3875 * @file_priv: DRM file info
3877 * This function retrieves the metadata for a given property, like the different
3878 * possible values for an enum property or the limits for a range property.
3880 * Blob properties are special
3882 * Called by the user via ioctl.
3885 * Zero on success, negative errno on failure.
3887 int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
3888 void *data
, struct drm_file
*file_priv
)
3890 struct drm_mode_get_property
*out_resp
= data
;
3891 struct drm_property
*property
;
3893 int value_count
= 0;
3896 struct drm_property_enum
*prop_enum
;
3897 struct drm_mode_property_enum __user
*enum_ptr
;
3898 uint64_t __user
*values_ptr
;
3900 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3903 drm_modeset_lock_all(dev
);
3904 property
= drm_property_find(dev
, out_resp
->prop_id
);
3910 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3911 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3912 list_for_each_entry(prop_enum
, &property
->enum_list
, head
)
3916 value_count
= property
->num_values
;
3918 strncpy(out_resp
->name
, property
->name
, DRM_PROP_NAME_LEN
);
3919 out_resp
->name
[DRM_PROP_NAME_LEN
-1] = 0;
3920 out_resp
->flags
= property
->flags
;
3922 if ((out_resp
->count_values
>= value_count
) && value_count
) {
3923 values_ptr
= (uint64_t __user
*)(unsigned long)out_resp
->values_ptr
;
3924 for (i
= 0; i
< value_count
; i
++) {
3925 if (copy_to_user(values_ptr
+ i
, &property
->values
[i
], sizeof(uint64_t))) {
3931 out_resp
->count_values
= value_count
;
3933 if (drm_property_type_is(property
, DRM_MODE_PROP_ENUM
) ||
3934 drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
3935 if ((out_resp
->count_enum_blobs
>= enum_count
) && enum_count
) {
3937 enum_ptr
= (struct drm_mode_property_enum __user
*)(unsigned long)out_resp
->enum_blob_ptr
;
3938 list_for_each_entry(prop_enum
, &property
->enum_list
, head
) {
3940 if (copy_to_user(&enum_ptr
[copied
].value
, &prop_enum
->value
, sizeof(uint64_t))) {
3945 if (copy_to_user(&enum_ptr
[copied
].name
,
3946 &prop_enum
->name
, DRM_PROP_NAME_LEN
)) {
3953 out_resp
->count_enum_blobs
= enum_count
;
3957 * NOTE: The idea seems to have been to use this to read all the blob
3958 * property values. But nothing ever added them to the corresponding
3959 * list, userspace always used the special-purpose get_blob ioctl to
3960 * read the value for a blob property. It also doesn't make a lot of
3961 * sense to return values here when everything else is just metadata for
3962 * the property itself.
3964 if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
))
3965 out_resp
->count_enum_blobs
= 0;
3967 drm_modeset_unlock_all(dev
);
3971 static struct drm_property_blob
*
3972 drm_property_create_blob(struct drm_device
*dev
, size_t length
,
3975 struct drm_property_blob
*blob
;
3978 if (!length
|| !data
)
3981 blob
= kzalloc(sizeof(struct drm_property_blob
)+length
, GFP_KERNEL
);
3985 ret
= drm_mode_object_get(dev
, &blob
->base
, DRM_MODE_OBJECT_BLOB
);
3991 blob
->length
= length
;
3993 memcpy(blob
->data
, data
, length
);
3995 list_add_tail(&blob
->head
, &dev
->mode_config
.property_blob_list
);
3999 static void drm_property_destroy_blob(struct drm_device
*dev
,
4000 struct drm_property_blob
*blob
)
4002 drm_mode_object_put(dev
, &blob
->base
);
4003 list_del(&blob
->head
);
4008 * drm_mode_getblob_ioctl - get the contents of a blob property value
4011 * @file_priv: DRM file info
4013 * This function retrieves the contents of a blob property. The value stored in
4014 * an object's blob property is just a normal modeset object id.
4016 * Called by the user via ioctl.
4019 * Zero on success, negative errno on failure.
4021 int drm_mode_getblob_ioctl(struct drm_device
*dev
,
4022 void *data
, struct drm_file
*file_priv
)
4024 struct drm_mode_get_blob
*out_resp
= data
;
4025 struct drm_property_blob
*blob
;
4027 void __user
*blob_ptr
;
4029 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4032 drm_modeset_lock_all(dev
);
4033 blob
= drm_property_blob_find(dev
, out_resp
->blob_id
);
4039 if (out_resp
->length
== blob
->length
) {
4040 blob_ptr
= (void __user
*)(unsigned long)out_resp
->data
;
4041 if (copy_to_user(blob_ptr
, blob
->data
, blob
->length
)){
4046 out_resp
->length
= blob
->length
;
4049 drm_modeset_unlock_all(dev
);
4054 * drm_mode_connector_set_path_property - set tile property on connector
4055 * @connector: connector to set property on.
4056 * @path: path to use for property.
4058 * This creates a property to expose to userspace to specify a
4059 * connector path. This is mainly used for DisplayPort MST where
4060 * connectors have a topology and we want to allow userspace to give
4061 * them more meaningful names.
4064 * Zero on success, negative errno on failure.
4066 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
4069 struct drm_device
*dev
= connector
->dev
;
4070 size_t size
= strlen(path
) + 1;
4073 connector
->path_blob_ptr
= drm_property_create_blob(connector
->dev
,
4075 if (!connector
->path_blob_ptr
)
4078 ret
= drm_object_property_set_value(&connector
->base
,
4079 dev
->mode_config
.path_property
,
4080 connector
->path_blob_ptr
->base
.id
);
4083 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
4086 * drm_mode_connector_update_edid_property - update the edid property of a connector
4087 * @connector: drm connector
4088 * @edid: new value of the edid property
4090 * This function creates a new blob modeset object and assigns its id to the
4091 * connector's edid property.
4094 * Zero on success, negative errno on failure.
4096 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
4097 const struct edid
*edid
)
4099 struct drm_device
*dev
= connector
->dev
;
4103 /* ignore requests to set edid when overridden */
4104 if (connector
->override_edid
)
4107 if (connector
->edid_blob_ptr
)
4108 drm_property_destroy_blob(dev
, connector
->edid_blob_ptr
);
4110 /* Delete edid, when there is none. */
4112 connector
->edid_blob_ptr
= NULL
;
4113 ret
= drm_object_property_set_value(&connector
->base
, dev
->mode_config
.edid_property
, 0);
4117 size
= EDID_LENGTH
* (1 + edid
->extensions
);
4118 connector
->edid_blob_ptr
= drm_property_create_blob(connector
->dev
,
4120 if (!connector
->edid_blob_ptr
)
4123 ret
= drm_object_property_set_value(&connector
->base
,
4124 dev
->mode_config
.edid_property
,
4125 connector
->edid_blob_ptr
->base
.id
);
4129 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
4131 static bool drm_property_change_is_valid(struct drm_property
*property
,
4134 if (property
->flags
& DRM_MODE_PROP_IMMUTABLE
)
4137 if (drm_property_type_is(property
, DRM_MODE_PROP_RANGE
)) {
4138 if (value
< property
->values
[0] || value
> property
->values
[1])
4141 } else if (drm_property_type_is(property
, DRM_MODE_PROP_SIGNED_RANGE
)) {
4142 int64_t svalue
= U642I64(value
);
4143 if (svalue
< U642I64(property
->values
[0]) ||
4144 svalue
> U642I64(property
->values
[1]))
4147 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BITMASK
)) {
4149 uint64_t valid_mask
= 0;
4150 for (i
= 0; i
< property
->num_values
; i
++)
4151 valid_mask
|= (1ULL << property
->values
[i
]);
4152 return !(value
& ~valid_mask
);
4153 } else if (drm_property_type_is(property
, DRM_MODE_PROP_BLOB
)) {
4154 /* Only the driver knows */
4156 } else if (drm_property_type_is(property
, DRM_MODE_PROP_OBJECT
)) {
4157 struct drm_mode_object
*obj
;
4158 /* a zero value for an object property translates to null: */
4162 * NOTE: use _object_find() directly to bypass restriction on
4163 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4164 * object this could race against object finalization, so it
4165 * simply tells us that the object *was* valid. Which is good
4168 obj
= _object_find(property
->dev
, value
, property
->values
[0]);
4172 for (i
= 0; i
< property
->num_values
; i
++)
4173 if (property
->values
[i
] == value
)
4180 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4183 * @file_priv: DRM file info
4185 * This function sets the current value for a connectors's property. It also
4186 * calls into a driver's ->set_property callback to update the hardware state
4188 * Called by the user via ioctl.
4191 * Zero on success, negative errno on failure.
4193 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
4194 void *data
, struct drm_file
*file_priv
)
4196 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
4197 struct drm_mode_obj_set_property obj_set_prop
= {
4198 .value
= conn_set_prop
->value
,
4199 .prop_id
= conn_set_prop
->prop_id
,
4200 .obj_id
= conn_set_prop
->connector_id
,
4201 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
4204 /* It does all the locking and checking we need */
4205 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
4208 static int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
4209 struct drm_property
*property
,
4213 struct drm_connector
*connector
= obj_to_connector(obj
);
4215 /* Do DPMS ourselves */
4216 if (property
== connector
->dev
->mode_config
.dpms_property
) {
4217 if (connector
->funcs
->dpms
)
4218 (*connector
->funcs
->dpms
)(connector
, (int)value
);
4220 } else if (connector
->funcs
->set_property
)
4221 ret
= connector
->funcs
->set_property(connector
, property
, value
);
4223 /* store the property value if successful */
4225 drm_object_property_set_value(&connector
->base
, property
, value
);
4229 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object
*obj
,
4230 struct drm_property
*property
,
4234 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
4236 if (crtc
->funcs
->set_property
)
4237 ret
= crtc
->funcs
->set_property(crtc
, property
, value
);
4239 drm_object_property_set_value(obj
, property
, value
);
4245 * drm_mode_plane_set_obj_prop - set the value of a property
4246 * @plane: drm plane object to set property value for
4247 * @property: property to set
4248 * @value: value the property should be set to
4250 * This functions sets a given property on a given plane object. This function
4251 * calls the driver's ->set_property callback and changes the software state of
4252 * the property if the callback succeeds.
4255 * Zero on success, error code on failure.
4257 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
4258 struct drm_property
*property
,
4262 struct drm_mode_object
*obj
= &plane
->base
;
4264 if (plane
->funcs
->set_property
)
4265 ret
= plane
->funcs
->set_property(plane
, property
, value
);
4267 drm_object_property_set_value(obj
, property
, value
);
4271 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
4274 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4277 * @file_priv: DRM file info
4279 * This function retrieves the current value for an object's property. Compared
4280 * to the connector specific ioctl this one is extended to also work on crtc and
4283 * Called by the user via ioctl.
4286 * Zero on success, negative errno on failure.
4288 int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
4289 struct drm_file
*file_priv
)
4291 struct drm_mode_obj_get_properties
*arg
= data
;
4292 struct drm_mode_object
*obj
;
4296 int props_count
= 0;
4297 uint32_t __user
*props_ptr
;
4298 uint64_t __user
*prop_values_ptr
;
4300 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4303 drm_modeset_lock_all(dev
);
4305 obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4310 if (!obj
->properties
) {
4315 props_count
= obj
->properties
->count
;
4317 /* This ioctl is called twice, once to determine how much space is
4318 * needed, and the 2nd time to fill it. */
4319 if ((arg
->count_props
>= props_count
) && props_count
) {
4321 props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->props_ptr
);
4322 prop_values_ptr
= (uint64_t __user
*)(unsigned long)
4323 (arg
->prop_values_ptr
);
4324 for (i
= 0; i
< props_count
; i
++) {
4325 if (put_user(obj
->properties
->ids
[i
],
4326 props_ptr
+ copied
)) {
4330 if (put_user(obj
->properties
->values
[i
],
4331 prop_values_ptr
+ copied
)) {
4338 arg
->count_props
= props_count
;
4340 drm_modeset_unlock_all(dev
);
4345 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4348 * @file_priv: DRM file info
4350 * This function sets the current value for an object's property. It also calls
4351 * into a driver's ->set_property callback to update the hardware state.
4352 * Compared to the connector specific ioctl this one is extended to also work on
4353 * crtc and plane objects.
4355 * Called by the user via ioctl.
4358 * Zero on success, negative errno on failure.
4360 int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
4361 struct drm_file
*file_priv
)
4363 struct drm_mode_obj_set_property
*arg
= data
;
4364 struct drm_mode_object
*arg_obj
;
4365 struct drm_mode_object
*prop_obj
;
4366 struct drm_property
*property
;
4370 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4373 drm_modeset_lock_all(dev
);
4375 arg_obj
= drm_mode_object_find(dev
, arg
->obj_id
, arg
->obj_type
);
4380 if (!arg_obj
->properties
)
4383 for (i
= 0; i
< arg_obj
->properties
->count
; i
++)
4384 if (arg_obj
->properties
->ids
[i
] == arg
->prop_id
)
4387 if (i
== arg_obj
->properties
->count
)
4390 prop_obj
= drm_mode_object_find(dev
, arg
->prop_id
,
4391 DRM_MODE_OBJECT_PROPERTY
);
4396 property
= obj_to_property(prop_obj
);
4398 if (!drm_property_change_is_valid(property
, arg
->value
))
4401 switch (arg_obj
->type
) {
4402 case DRM_MODE_OBJECT_CONNECTOR
:
4403 ret
= drm_mode_connector_set_obj_prop(arg_obj
, property
,
4406 case DRM_MODE_OBJECT_CRTC
:
4407 ret
= drm_mode_crtc_set_obj_prop(arg_obj
, property
, arg
->value
);
4409 case DRM_MODE_OBJECT_PLANE
:
4410 ret
= drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj
),
4411 property
, arg
->value
);
4416 drm_modeset_unlock_all(dev
);
4421 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4422 * @connector: connector to attach
4423 * @encoder: encoder to attach @connector to
4425 * This function links up a connector to an encoder. Note that the routing
4426 * restrictions between encoders and crtcs are exposed to userspace through the
4427 * possible_clones and possible_crtcs bitmasks.
4430 * Zero on success, negative errno on failure.
4432 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
4433 struct drm_encoder
*encoder
)
4437 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
4438 if (connector
->encoder_ids
[i
] == 0) {
4439 connector
->encoder_ids
[i
] = encoder
->base
.id
;
4445 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
4448 * drm_mode_crtc_set_gamma_size - set the gamma table size
4449 * @crtc: CRTC to set the gamma table size for
4450 * @gamma_size: size of the gamma table
4452 * Drivers which support gamma tables should set this to the supported gamma
4453 * table size when initializing the CRTC. Currently the drm core only supports a
4454 * fixed gamma table size.
4457 * Zero on success, negative errno on failure.
4459 int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
4462 crtc
->gamma_size
= gamma_size
;
4464 crtc
->gamma_store
= kzalloc(gamma_size
* sizeof(uint16_t) * 3, GFP_KERNEL
);
4465 if (!crtc
->gamma_store
) {
4466 crtc
->gamma_size
= 0;
4472 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size
);
4475 * drm_mode_gamma_set_ioctl - set the gamma table
4478 * @file_priv: DRM file info
4480 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4481 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4483 * Called by the user via ioctl.
4486 * Zero on success, negative errno on failure.
4488 int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
4489 void *data
, struct drm_file
*file_priv
)
4491 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4492 struct drm_crtc
*crtc
;
4493 void *r_base
, *g_base
, *b_base
;
4497 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4500 drm_modeset_lock_all(dev
);
4501 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4507 if (crtc
->funcs
->gamma_set
== NULL
) {
4512 /* memcpy into gamma store */
4513 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4518 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4519 r_base
= crtc
->gamma_store
;
4520 if (copy_from_user(r_base
, (void __user
*)(unsigned long)crtc_lut
->red
, size
)) {
4525 g_base
= r_base
+ size
;
4526 if (copy_from_user(g_base
, (void __user
*)(unsigned long)crtc_lut
->green
, size
)) {
4531 b_base
= g_base
+ size
;
4532 if (copy_from_user(b_base
, (void __user
*)(unsigned long)crtc_lut
->blue
, size
)) {
4537 crtc
->funcs
->gamma_set(crtc
, r_base
, g_base
, b_base
, 0, crtc
->gamma_size
);
4540 drm_modeset_unlock_all(dev
);
4546 * drm_mode_gamma_get_ioctl - get the gamma table
4549 * @file_priv: DRM file info
4551 * Copy the current gamma table into the storage provided. This also provides
4552 * the gamma table size the driver expects, which can be used to size the
4553 * allocated storage.
4555 * Called by the user via ioctl.
4558 * Zero on success, negative errno on failure.
4560 int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
4561 void *data
, struct drm_file
*file_priv
)
4563 struct drm_mode_crtc_lut
*crtc_lut
= data
;
4564 struct drm_crtc
*crtc
;
4565 void *r_base
, *g_base
, *b_base
;
4569 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4572 drm_modeset_lock_all(dev
);
4573 crtc
= drm_crtc_find(dev
, crtc_lut
->crtc_id
);
4579 /* memcpy into gamma store */
4580 if (crtc_lut
->gamma_size
!= crtc
->gamma_size
) {
4585 size
= crtc_lut
->gamma_size
* (sizeof(uint16_t));
4586 r_base
= crtc
->gamma_store
;
4587 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->red
, r_base
, size
)) {
4592 g_base
= r_base
+ size
;
4593 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->green
, g_base
, size
)) {
4598 b_base
= g_base
+ size
;
4599 if (copy_to_user((void __user
*)(unsigned long)crtc_lut
->blue
, b_base
, size
)) {
4604 drm_modeset_unlock_all(dev
);
4609 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4612 * @file_priv: DRM file info
4614 * This schedules an asynchronous update on a given CRTC, called page flip.
4615 * Optionally a drm event is generated to signal the completion of the event.
4616 * Generic drivers cannot assume that a pageflip with changed framebuffer
4617 * properties (including driver specific metadata like tiling layout) will work,
4618 * but some drivers support e.g. pixel format changes through the pageflip
4621 * Called by the user via ioctl.
4624 * Zero on success, negative errno on failure.
4626 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
4627 void *data
, struct drm_file
*file_priv
)
4629 struct drm_mode_crtc_page_flip
*page_flip
= data
;
4630 struct drm_crtc
*crtc
;
4631 struct drm_framebuffer
*fb
= NULL
;
4632 struct drm_pending_vblank_event
*e
= NULL
;
4633 unsigned long flags
;
4636 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
||
4637 page_flip
->reserved
!= 0)
4640 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
4643 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
4647 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
4648 if (crtc
->primary
->fb
== NULL
) {
4649 /* The framebuffer is currently unbound, presumably
4650 * due to a hotplug event, that userspace has not
4657 if (crtc
->funcs
->page_flip
== NULL
)
4660 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
4666 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
4670 if (crtc
->primary
->fb
->pixel_format
!= fb
->pixel_format
) {
4671 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4676 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4678 spin_lock_irqsave(&dev
->event_lock
, flags
);
4679 if (file_priv
->event_space
< sizeof e
->event
) {
4680 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4683 file_priv
->event_space
-= sizeof e
->event
;
4684 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4686 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
4688 spin_lock_irqsave(&dev
->event_lock
, flags
);
4689 file_priv
->event_space
+= sizeof e
->event
;
4690 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4694 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
4695 e
->event
.base
.length
= sizeof e
->event
;
4696 e
->event
.user_data
= page_flip
->user_data
;
4697 e
->base
.event
= &e
->event
.base
;
4698 e
->base
.file_priv
= file_priv
;
4700 (void (*) (struct drm_pending_event
*)) kfree
;
4703 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
4704 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
4706 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
4707 spin_lock_irqsave(&dev
->event_lock
, flags
);
4708 file_priv
->event_space
+= sizeof e
->event
;
4709 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
4712 /* Keep the old fb, don't unref it. */
4713 crtc
->primary
->old_fb
= NULL
;
4716 * Warn if the driver hasn't properly updated the crtc->fb
4717 * field to reflect that the new framebuffer is now used.
4718 * Failing to do so will screw with the reference counting
4721 WARN_ON(crtc
->primary
->fb
!= fb
);
4722 /* Unref only the old framebuffer. */
4728 drm_framebuffer_unreference(fb
);
4729 if (crtc
->primary
->old_fb
)
4730 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
4731 crtc
->primary
->old_fb
= NULL
;
4732 drm_modeset_unlock_crtc(crtc
);
4738 * drm_mode_config_reset - call ->reset callbacks
4741 * This functions calls all the crtc's, encoder's and connector's ->reset
4742 * callback. Drivers can use this in e.g. their driver load or resume code to
4743 * reset hardware and software state.
4745 void drm_mode_config_reset(struct drm_device
*dev
)
4747 struct drm_crtc
*crtc
;
4748 struct drm_plane
*plane
;
4749 struct drm_encoder
*encoder
;
4750 struct drm_connector
*connector
;
4752 list_for_each_entry(plane
, &dev
->mode_config
.plane_list
, head
)
4753 if (plane
->funcs
->reset
)
4754 plane
->funcs
->reset(plane
);
4756 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
4757 if (crtc
->funcs
->reset
)
4758 crtc
->funcs
->reset(crtc
);
4760 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
4761 if (encoder
->funcs
->reset
)
4762 encoder
->funcs
->reset(encoder
);
4764 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
4765 connector
->status
= connector_status_unknown
;
4767 if (connector
->funcs
->reset
)
4768 connector
->funcs
->reset(connector
);
4771 EXPORT_SYMBOL(drm_mode_config_reset
);
4774 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4777 * @file_priv: DRM file info
4779 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4780 * TTM or something else entirely) and returns the resulting buffer handle. This
4781 * handle can then be wrapped up into a framebuffer modeset object.
4783 * Note that userspace is not allowed to use such objects for render
4784 * acceleration - drivers must create their own private ioctls for such a use
4787 * Called by the user via ioctl.
4790 * Zero on success, negative errno on failure.
4792 int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
4793 void *data
, struct drm_file
*file_priv
)
4795 struct drm_mode_create_dumb
*args
= data
;
4796 u32 cpp
, stride
, size
;
4798 if (!dev
->driver
->dumb_create
)
4800 if (!args
->width
|| !args
->height
|| !args
->bpp
)
4803 /* overflow checks for 32bit size calculations */
4804 /* NOTE: DIV_ROUND_UP() can overflow */
4805 cpp
= DIV_ROUND_UP(args
->bpp
, 8);
4806 if (!cpp
|| cpp
> 0xffffffffU
/ args
->width
)
4808 stride
= cpp
* args
->width
;
4809 if (args
->height
> 0xffffffffU
/ stride
)
4812 /* test for wrap-around */
4813 size
= args
->height
* stride
;
4814 if (PAGE_ALIGN(size
) == 0)
4818 * handle, pitch and size are output parameters. Zero them out to
4819 * prevent drivers from accidentally using uninitialized data. Since
4820 * not all existing userspace is clearing these fields properly we
4821 * cannot reject IOCTL with garbage in them.
4827 return dev
->driver
->dumb_create(file_priv
, dev
, args
);
4831 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4834 * @file_priv: DRM file info
4836 * Allocate an offset in the drm device node's address space to be able to
4837 * memory map a dumb buffer.
4839 * Called by the user via ioctl.
4842 * Zero on success, negative errno on failure.
4844 int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
4845 void *data
, struct drm_file
*file_priv
)
4847 struct drm_mode_map_dumb
*args
= data
;
4849 /* call driver ioctl to get mmap offset */
4850 if (!dev
->driver
->dumb_map_offset
)
4853 return dev
->driver
->dumb_map_offset(file_priv
, dev
, args
->handle
, &args
->offset
);
4857 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4860 * @file_priv: DRM file info
4862 * This destroys the userspace handle for the given dumb backing storage buffer.
4863 * Since buffer objects must be reference counted in the kernel a buffer object
4864 * won't be immediately freed if a framebuffer modeset object still uses it.
4866 * Called by the user via ioctl.
4869 * Zero on success, negative errno on failure.
4871 int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
4872 void *data
, struct drm_file
*file_priv
)
4874 struct drm_mode_destroy_dumb
*args
= data
;
4876 if (!dev
->driver
->dumb_destroy
)
4879 return dev
->driver
->dumb_destroy(file_priv
, dev
, args
->handle
);
4883 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4884 * @format: pixel format (DRM_FORMAT_*)
4885 * @depth: storage for the depth value
4886 * @bpp: storage for the bpp value
4888 * This only supports RGB formats here for compat with code that doesn't use
4889 * pixel formats directly yet.
4891 void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
4896 case DRM_FORMAT_RGB332
:
4897 case DRM_FORMAT_BGR233
:
4901 case DRM_FORMAT_XRGB1555
:
4902 case DRM_FORMAT_XBGR1555
:
4903 case DRM_FORMAT_RGBX5551
:
4904 case DRM_FORMAT_BGRX5551
:
4905 case DRM_FORMAT_ARGB1555
:
4906 case DRM_FORMAT_ABGR1555
:
4907 case DRM_FORMAT_RGBA5551
:
4908 case DRM_FORMAT_BGRA5551
:
4912 case DRM_FORMAT_RGB565
:
4913 case DRM_FORMAT_BGR565
:
4917 case DRM_FORMAT_RGB888
:
4918 case DRM_FORMAT_BGR888
:
4922 case DRM_FORMAT_XRGB8888
:
4923 case DRM_FORMAT_XBGR8888
:
4924 case DRM_FORMAT_RGBX8888
:
4925 case DRM_FORMAT_BGRX8888
:
4929 case DRM_FORMAT_XRGB2101010
:
4930 case DRM_FORMAT_XBGR2101010
:
4931 case DRM_FORMAT_RGBX1010102
:
4932 case DRM_FORMAT_BGRX1010102
:
4933 case DRM_FORMAT_ARGB2101010
:
4934 case DRM_FORMAT_ABGR2101010
:
4935 case DRM_FORMAT_RGBA1010102
:
4936 case DRM_FORMAT_BGRA1010102
:
4940 case DRM_FORMAT_ARGB8888
:
4941 case DRM_FORMAT_ABGR8888
:
4942 case DRM_FORMAT_RGBA8888
:
4943 case DRM_FORMAT_BGRA8888
:
4948 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4949 drm_get_format_name(format
));
4955 EXPORT_SYMBOL(drm_fb_get_bpp_depth
);
4958 * drm_format_num_planes - get the number of planes for format
4959 * @format: pixel format (DRM_FORMAT_*)
4962 * The number of planes used by the specified pixel format.
4964 int drm_format_num_planes(uint32_t format
)
4967 case DRM_FORMAT_YUV410
:
4968 case DRM_FORMAT_YVU410
:
4969 case DRM_FORMAT_YUV411
:
4970 case DRM_FORMAT_YVU411
:
4971 case DRM_FORMAT_YUV420
:
4972 case DRM_FORMAT_YVU420
:
4973 case DRM_FORMAT_YUV422
:
4974 case DRM_FORMAT_YVU422
:
4975 case DRM_FORMAT_YUV444
:
4976 case DRM_FORMAT_YVU444
:
4978 case DRM_FORMAT_NV12
:
4979 case DRM_FORMAT_NV21
:
4980 case DRM_FORMAT_NV16
:
4981 case DRM_FORMAT_NV61
:
4982 case DRM_FORMAT_NV24
:
4983 case DRM_FORMAT_NV42
:
4989 EXPORT_SYMBOL(drm_format_num_planes
);
4992 * drm_format_plane_cpp - determine the bytes per pixel value
4993 * @format: pixel format (DRM_FORMAT_*)
4994 * @plane: plane index
4997 * The bytes per pixel value for the specified plane.
4999 int drm_format_plane_cpp(uint32_t format
, int plane
)
5004 if (plane
>= drm_format_num_planes(format
))
5008 case DRM_FORMAT_YUYV
:
5009 case DRM_FORMAT_YVYU
:
5010 case DRM_FORMAT_UYVY
:
5011 case DRM_FORMAT_VYUY
:
5013 case DRM_FORMAT_NV12
:
5014 case DRM_FORMAT_NV21
:
5015 case DRM_FORMAT_NV16
:
5016 case DRM_FORMAT_NV61
:
5017 case DRM_FORMAT_NV24
:
5018 case DRM_FORMAT_NV42
:
5019 return plane
? 2 : 1;
5020 case DRM_FORMAT_YUV410
:
5021 case DRM_FORMAT_YVU410
:
5022 case DRM_FORMAT_YUV411
:
5023 case DRM_FORMAT_YVU411
:
5024 case DRM_FORMAT_YUV420
:
5025 case DRM_FORMAT_YVU420
:
5026 case DRM_FORMAT_YUV422
:
5027 case DRM_FORMAT_YVU422
:
5028 case DRM_FORMAT_YUV444
:
5029 case DRM_FORMAT_YVU444
:
5032 drm_fb_get_bpp_depth(format
, &depth
, &bpp
);
5036 EXPORT_SYMBOL(drm_format_plane_cpp
);
5039 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5040 * @format: pixel format (DRM_FORMAT_*)
5043 * The horizontal chroma subsampling factor for the
5044 * specified pixel format.
5046 int drm_format_horz_chroma_subsampling(uint32_t format
)
5049 case DRM_FORMAT_YUV411
:
5050 case DRM_FORMAT_YVU411
:
5051 case DRM_FORMAT_YUV410
:
5052 case DRM_FORMAT_YVU410
:
5054 case DRM_FORMAT_YUYV
:
5055 case DRM_FORMAT_YVYU
:
5056 case DRM_FORMAT_UYVY
:
5057 case DRM_FORMAT_VYUY
:
5058 case DRM_FORMAT_NV12
:
5059 case DRM_FORMAT_NV21
:
5060 case DRM_FORMAT_NV16
:
5061 case DRM_FORMAT_NV61
:
5062 case DRM_FORMAT_YUV422
:
5063 case DRM_FORMAT_YVU422
:
5064 case DRM_FORMAT_YUV420
:
5065 case DRM_FORMAT_YVU420
:
5071 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling
);
5074 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5075 * @format: pixel format (DRM_FORMAT_*)
5078 * The vertical chroma subsampling factor for the
5079 * specified pixel format.
5081 int drm_format_vert_chroma_subsampling(uint32_t format
)
5084 case DRM_FORMAT_YUV410
:
5085 case DRM_FORMAT_YVU410
:
5087 case DRM_FORMAT_YUV420
:
5088 case DRM_FORMAT_YVU420
:
5089 case DRM_FORMAT_NV12
:
5090 case DRM_FORMAT_NV21
:
5096 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling
);
5099 * drm_rotation_simplify() - Try to simplify the rotation
5100 * @rotation: Rotation to be simplified
5101 * @supported_rotations: Supported rotations
5103 * Attempt to simplify the rotation to a form that is supported.
5104 * Eg. if the hardware supports everything except DRM_REFLECT_X
5105 * one could call this function like this:
5107 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5108 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5109 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5111 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5112 * transforms the hardware supports, this function may not
5113 * be able to produce a supported transform, so the caller should
5114 * check the result afterwards.
5116 unsigned int drm_rotation_simplify(unsigned int rotation
,
5117 unsigned int supported_rotations
)
5119 if (rotation
& ~supported_rotations
) {
5120 rotation
^= BIT(DRM_REFLECT_X
) | BIT(DRM_REFLECT_Y
);
5121 rotation
= (rotation
& ~0xf) | BIT((ffs(rotation
& 0xf) + 1) % 4);
5126 EXPORT_SYMBOL(drm_rotation_simplify
);
5129 * drm_mode_config_init - initialize DRM mode_configuration structure
5132 * Initialize @dev's mode_config structure, used for tracking the graphics
5133 * configuration of @dev.
5135 * Since this initializes the modeset locks, no locking is possible. Which is no
5136 * problem, since this should happen single threaded at init time. It is the
5137 * driver's problem to ensure this guarantee.
5140 void drm_mode_config_init(struct drm_device
*dev
)
5142 mutex_init(&dev
->mode_config
.mutex
);
5143 drm_modeset_lock_init(&dev
->mode_config
.connection_mutex
);
5144 mutex_init(&dev
->mode_config
.idr_mutex
);
5145 mutex_init(&dev
->mode_config
.fb_lock
);
5146 INIT_LIST_HEAD(&dev
->mode_config
.fb_list
);
5147 INIT_LIST_HEAD(&dev
->mode_config
.crtc_list
);
5148 INIT_LIST_HEAD(&dev
->mode_config
.connector_list
);
5149 INIT_LIST_HEAD(&dev
->mode_config
.bridge_list
);
5150 INIT_LIST_HEAD(&dev
->mode_config
.encoder_list
);
5151 INIT_LIST_HEAD(&dev
->mode_config
.property_list
);
5152 INIT_LIST_HEAD(&dev
->mode_config
.property_blob_list
);
5153 INIT_LIST_HEAD(&dev
->mode_config
.plane_list
);
5154 idr_init(&dev
->mode_config
.crtc_idr
);
5156 drm_modeset_lock_all(dev
);
5157 drm_mode_create_standard_connector_properties(dev
);
5158 drm_mode_create_standard_plane_properties(dev
);
5159 drm_modeset_unlock_all(dev
);
5161 /* Just to be sure */
5162 dev
->mode_config
.num_fb
= 0;
5163 dev
->mode_config
.num_connector
= 0;
5164 dev
->mode_config
.num_crtc
= 0;
5165 dev
->mode_config
.num_encoder
= 0;
5166 dev
->mode_config
.num_overlay_plane
= 0;
5167 dev
->mode_config
.num_total_plane
= 0;
5169 EXPORT_SYMBOL(drm_mode_config_init
);
5172 * drm_mode_config_cleanup - free up DRM mode_config info
5175 * Free up all the connectors and CRTCs associated with this DRM device, then
5176 * free up the framebuffers and associated buffer objects.
5178 * Note that since this /should/ happen single-threaded at driver/device
5179 * teardown time, no locking is required. It's the driver's job to ensure that
5180 * this guarantee actually holds true.
5182 * FIXME: cleanup any dangling user buffer objects too
5184 void drm_mode_config_cleanup(struct drm_device
*dev
)
5186 struct drm_connector
*connector
, *ot
;
5187 struct drm_crtc
*crtc
, *ct
;
5188 struct drm_encoder
*encoder
, *enct
;
5189 struct drm_bridge
*bridge
, *brt
;
5190 struct drm_framebuffer
*fb
, *fbt
;
5191 struct drm_property
*property
, *pt
;
5192 struct drm_property_blob
*blob
, *bt
;
5193 struct drm_plane
*plane
, *plt
;
5195 list_for_each_entry_safe(encoder
, enct
, &dev
->mode_config
.encoder_list
,
5197 encoder
->funcs
->destroy(encoder
);
5200 list_for_each_entry_safe(bridge
, brt
,
5201 &dev
->mode_config
.bridge_list
, head
) {
5202 bridge
->funcs
->destroy(bridge
);
5205 list_for_each_entry_safe(connector
, ot
,
5206 &dev
->mode_config
.connector_list
, head
) {
5207 connector
->funcs
->destroy(connector
);
5210 list_for_each_entry_safe(property
, pt
, &dev
->mode_config
.property_list
,
5212 drm_property_destroy(dev
, property
);
5215 list_for_each_entry_safe(blob
, bt
, &dev
->mode_config
.property_blob_list
,
5217 drm_property_destroy_blob(dev
, blob
);
5221 * Single-threaded teardown context, so it's not required to grab the
5222 * fb_lock to protect against concurrent fb_list access. Contrary, it
5223 * would actually deadlock with the drm_framebuffer_cleanup function.
5225 * Also, if there are any framebuffers left, that's a driver leak now,
5226 * so politely WARN about this.
5228 WARN_ON(!list_empty(&dev
->mode_config
.fb_list
));
5229 list_for_each_entry_safe(fb
, fbt
, &dev
->mode_config
.fb_list
, head
) {
5230 drm_framebuffer_remove(fb
);
5233 list_for_each_entry_safe(plane
, plt
, &dev
->mode_config
.plane_list
,
5235 plane
->funcs
->destroy(plane
);
5238 list_for_each_entry_safe(crtc
, ct
, &dev
->mode_config
.crtc_list
, head
) {
5239 crtc
->funcs
->destroy(crtc
);
5242 idr_destroy(&dev
->mode_config
.crtc_idr
);
5243 drm_modeset_lock_fini(&dev
->mode_config
.connection_mutex
);
5245 EXPORT_SYMBOL(drm_mode_config_cleanup
);
5247 struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
5248 unsigned int supported_rotations
)
5250 static const struct drm_prop_enum_list props
[] = {
5251 { DRM_ROTATE_0
, "rotate-0" },
5252 { DRM_ROTATE_90
, "rotate-90" },
5253 { DRM_ROTATE_180
, "rotate-180" },
5254 { DRM_ROTATE_270
, "rotate-270" },
5255 { DRM_REFLECT_X
, "reflect-x" },
5256 { DRM_REFLECT_Y
, "reflect-y" },
5259 return drm_property_create_bitmask(dev
, 0, "rotation",
5260 props
, ARRAY_SIZE(props
),
5261 supported_rotations
);
5263 EXPORT_SYMBOL(drm_mode_create_rotation_property
);