attribute_container.h

 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
14struct device;
15
16struct 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
27static inline int
28attribute_container_no_classdevs(struct attribute_container *atc)
29{
30	return atc->flags & ATTRIBUTE_CONTAINER_NO_CLASSDEVS;
31}
32
33static inline void
34attribute_container_set_no_classdevs(struct attribute_container *atc)
35{
36	atc->flags |= ATTRIBUTE_CONTAINER_NO_CLASSDEVS;
37}
38
39int attribute_container_register(struct attribute_container *cont);
40int __must_check attribute_container_unregister(struct attribute_container *cont);
41void attribute_container_create_device(struct device *dev,
42				       int (*fn)(struct attribute_container *,
43						 struct device *,
44						 struct device *));
45void attribute_container_add_device(struct device *dev,
46				    int (*fn)(struct attribute_container *,
47					      struct device *,
48					      struct device *));
49void attribute_container_remove_device(struct device *dev,
50				       void (*fn)(struct attribute_container *,
51						  struct device *,
52						  struct device *));
53void attribute_container_device_trigger(struct device *dev, 
54					int (*fn)(struct attribute_container *,
55						  struct device *,
56						  struct device *));
57int 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 *));
64int attribute_container_add_attrs(struct device *classdev);
65int attribute_container_add_class_device(struct device *classdev);
66void attribute_container_remove_attrs(struct device *classdev);
67void attribute_container_class_device_del(struct device *classdev);
68struct attribute_container *attribute_container_classdev_to_container(struct device *);
69struct device *attribute_container_find_class_device(struct attribute_container *, struct device *);
70struct device_attribute **attribute_container_classdev_to_attrs(const struct device *classdev);
71
72#endif