1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * attribute_container.h - a generic container for all classes
4 *
5 * Copyright (c) 2005 - James Bottomley <James.Bottomley@steeleye.com>
6 */
7
8 #ifndef _ATTRIBUTE_CONTAINER_H_
9 #define _ATTRIBUTE_CONTAINER_H_
10
11 #include <linux/list.h>
12 #include <linux/klist.h>
13
14 struct device;
15
16 struct attribute_container {
17 struct list_head node;
18 struct klist containers;
19 struct class *class;
20 const struct attribute_group *grp;
21 struct device_attribute **attrs;
22 int (*match)(struct attribute_container *, struct device *);
23 #define ATTRIBUTE_CONTAINER_NO_CLASSDEVS 0x01
24 unsigned long flags;
25 };
26
27 static inline int
attribute_container_no_classdevs(struct attribute_container * atc)28 attribute_container_no_classdevs(struct attribute_container *atc)
29 {
30 return atc->flags & ATTRIBUTE_CONTAINER_NO_CLASSDEVS;
31 }
32
33 static inline void
attribute_container_set_no_classdevs(struct attribute_container * atc)34 attribute_container_set_no_classdevs(struct attribute_container *atc)
35 {
36 atc->flags |= ATTRIBUTE_CONTAINER_NO_CLASSDEVS;
37 }
38
39 int attribute_container_register(struct attribute_container *cont);
40 int __must_check attribute_container_unregister(struct attribute_container *cont);
41 void attribute_container_create_device(struct device *dev,
42 int (*fn)(struct attribute_container *,
43 struct device *,
44 struct device *));
45 void attribute_container_add_device(struct device *dev,
46 int (*fn)(struct attribute_container *,
47 struct device *,
48 struct device *));
49 void attribute_container_remove_device(struct device *dev,
50 void (*fn)(struct attribute_container *,
51 struct device *,
52 struct device *));
53 void attribute_container_device_trigger(struct device *dev,
54 int (*fn)(struct attribute_container *,
55 struct device *,
56 struct device *));
57 int attribute_container_device_trigger_safe(struct device *dev,
58 int (*fn)(struct attribute_container *,
59 struct device *,
60 struct device *),
61 int (*undo)(struct attribute_container *,
62 struct device *,
63 struct device *));
64 int attribute_container_add_attrs(struct device *classdev);
65 int attribute_container_add_class_device(struct device *classdev);
66 void attribute_container_remove_attrs(struct device *classdev);
67 void attribute_container_class_device_del(struct device *classdev);
68 struct attribute_container *attribute_container_classdev_to_container(struct device *);
69 struct device *attribute_container_find_class_device(struct attribute_container *, struct device *);
70 struct device_attribute **attribute_container_classdev_to_attrs(const struct device *classdev);
71
72 #endif
73