drm/linux: Implement more kobject parts
[dragonfly.git] / sys / dev / drm / include / linux / kobject.h
CommitLineData
1b7db0e0 1/*
15dba7a9 2 * Copyright (c) 2016-2018 François Tigeot <ftigeot@wolfpond.org>
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3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef _LINUX_KOBJECT_H_
28#define _LINUX_KOBJECT_H_
29
30#include <linux/types.h>
31#include <linux/list.h>
15dba7a9 32#include <linux/sysfs.h>
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33#include <linux/compiler.h>
34#include <linux/spinlock.h>
35#include <linux/kref.h>
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36#include <linux/kernel.h>
37#include <linux/wait.h>
38#include <linux/atomic.h>
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39
40enum kobject_action {
41 KOBJ_ADD,
42 KOBJ_REMOVE,
43 KOBJ_CHANGE,
44 KOBJ_MOVE,
45 KOBJ_ONLINE,
46 KOBJ_OFFLINE,
47 KOBJ_MAX
48};
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49
50struct kobject {
39cfddd2 51 const char *name;
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52 struct kref kref;
53 struct kobj_type *ktype;
54};
55
56struct kobj_type {
57 void (*release)(struct kobject *kobj);
58 const struct sysfs_ops *sysfs_ops;
59 struct attribute **default_attrs;
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60};
61
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62static inline int
63kobject_uevent_env(struct kobject *kobj, enum kobject_action action, char *envp[])
64{
65 return 0;
66}
67
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68extern __printf(4, 5) __must_check
69int kobject_init_and_add(struct kobject *kobj,
70 struct kobj_type *ktype, struct kobject *parent,
71 const char *fmt, ...);
72
73extern void kobject_release(struct kref *kref);
74
75static inline void
76kobject_put(struct kobject *kobj)
77{
78 if (kobj != NULL)
79 kref_put(&kobj->kref, kobject_release);
80}
81
82static inline void
83kobject_del(struct kobject *kobj)
84{
85 /*
86 This function is supposed to unlink the object from a hierarchy.
87 There is no such hierarchy in the DragonFly implementation, doing
88 nothing is fine.
89 */
90}
91
1b7db0e0 92#endif /* _LINUX_KOBJECT_H_ */