include/linux/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
  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
  28 attribute_container_no_classdevs(struct attribute_container *atc)
  29 {
  30         return atc->flags & ATTRIBUTE_CONTAINER_NO_CLASSDEVS;
  31 }
  32
  33 static inline void
  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