1 #ifndef _LINUX_OF_PRIVATE_H 2 #define _LINUX_OF_PRIVATE_H 3 /* 4 * Private symbols used by OF support code 5 * 6 * Paul Mackerras August 1996. 7 * Copyright (C) 1996-2005 Paul Mackerras. 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License 11 * as published by the Free Software Foundation; either version 12 * 2 of the License, or (at your option) any later version. 13 */ 14 15 /** 16 * struct alias_prop - Alias property in 'aliases' node 17 * @link: List node to link the structure in aliases_lookup list 18 * @alias: Alias property name 19 * @np: Pointer to device_node that the alias stands for 20 * @id: Index value from end of alias name 21 * @stem: Alias string without the index 22 * 23 * The structure represents one alias property of 'aliases' node as 24 * an entry in aliases_lookup list. 25 */ 26 struct alias_prop { 27 struct list_head link; 28 const char *alias; 29 struct device_node *np; 30 int id; 31 char stem[0]; 32 }; 33 34 extern struct mutex of_mutex; 35 extern struct list_head aliases_lookup; 36 extern struct kset *of_kset; 37 38 #if defined(CONFIG_OF_DYNAMIC) 39 extern int of_property_notify(int action, struct device_node *np, 40 struct property *prop, struct property *old_prop); 41 extern void of_node_release(struct kobject *kobj); 42 extern int __of_changeset_apply_entries(struct of_changeset *ocs, 43 int *ret_revert); 44 extern int __of_changeset_apply_notify(struct of_changeset *ocs); 45 extern int __of_changeset_revert_entries(struct of_changeset *ocs, 46 int *ret_apply); 47 extern int __of_changeset_revert_notify(struct of_changeset *ocs); 48 #else /* CONFIG_OF_DYNAMIC */ 49 static inline int of_property_notify(int action, struct device_node *np, 50 struct property *prop, struct property *old_prop) 51 { 52 return 0; 53 } 54 #endif /* CONFIG_OF_DYNAMIC */ 55 56 #if defined(CONFIG_OF_KOBJ) 57 int of_node_is_attached(struct device_node *node); 58 int __of_add_property_sysfs(struct device_node *np, struct property *pp); 59 void __of_remove_property_sysfs(struct device_node *np, struct property *prop); 60 void __of_update_property_sysfs(struct device_node *np, struct property *newprop, 61 struct property *oldprop); 62 int __of_attach_node_sysfs(struct device_node *np); 63 void __of_detach_node_sysfs(struct device_node *np); 64 #else 65 static inline int __of_add_property_sysfs(struct device_node *np, struct property *pp) 66 { 67 return 0; 68 } 69 static inline void __of_remove_property_sysfs(struct device_node *np, struct property *prop) {} 70 static inline void __of_update_property_sysfs(struct device_node *np, 71 struct property *newprop, struct property *oldprop) {} 72 static inline int __of_attach_node_sysfs(struct device_node *np) 73 { 74 return 0; 75 } 76 static inline void __of_detach_node_sysfs(struct device_node *np) {} 77 #endif 78 79 #if defined(CONFIG_OF_RESOLVE) 80 int of_resolve_phandles(struct device_node *tree); 81 #endif 82 83 #if defined(CONFIG_OF_OVERLAY) 84 void of_overlay_mutex_lock(void); 85 void of_overlay_mutex_unlock(void); 86 #else 87 static inline void of_overlay_mutex_lock(void) {}; 88 static inline void of_overlay_mutex_unlock(void) {}; 89 #endif 90 91 #if defined(CONFIG_OF_UNITTEST) && defined(CONFIG_OF_OVERLAY) 92 extern void __init unittest_unflatten_overlay_base(void); 93 #else 94 static inline void unittest_unflatten_overlay_base(void) {}; 95 #endif 96 97 extern void *__unflatten_device_tree(const void *blob, 98 struct device_node *dad, 99 struct device_node **mynodes, 100 void *(*dt_alloc)(u64 size, u64 align), 101 bool detached); 102 103 /** 104 * General utilities for working with live trees. 105 * 106 * All functions with two leading underscores operate 107 * without taking node references, so you either have to 108 * own the devtree lock or work on detached trees only. 109 */ 110 struct property *__of_prop_dup(const struct property *prop, gfp_t allocflags); 111 __printf(2, 3) struct device_node *__of_node_dup(const struct device_node *np, const char *fmt, ...); 112 113 struct device_node *__of_find_node_by_path(struct device_node *parent, 114 const char *path); 115 struct device_node *__of_find_node_by_full_path(struct device_node *node, 116 const char *path); 117 118 extern const void *__of_get_property(const struct device_node *np, 119 const char *name, int *lenp); 120 extern int __of_add_property(struct device_node *np, struct property *prop); 121 extern int __of_add_property_sysfs(struct device_node *np, 122 struct property *prop); 123 extern int __of_remove_property(struct device_node *np, struct property *prop); 124 extern void __of_remove_property_sysfs(struct device_node *np, 125 struct property *prop); 126 extern int __of_update_property(struct device_node *np, 127 struct property *newprop, struct property **oldprop); 128 extern void __of_update_property_sysfs(struct device_node *np, 129 struct property *newprop, struct property *oldprop); 130 131 extern int __of_attach_node_sysfs(struct device_node *np); 132 extern void __of_detach_node(struct device_node *np); 133 extern void __of_detach_node_sysfs(struct device_node *np); 134 135 extern void __of_sysfs_remove_bin_file(struct device_node *np, 136 struct property *prop); 137 138 /* iterators for transactions, used for overlays */ 139 /* forward iterator */ 140 #define for_each_transaction_entry(_oft, _te) \ 141 list_for_each_entry(_te, &(_oft)->te_list, node) 142 143 /* reverse iterator */ 144 #define for_each_transaction_entry_reverse(_oft, _te) \ 145 list_for_each_entry_reverse(_te, &(_oft)->te_list, node) 146 147 #endif /* _LINUX_OF_PRIVATE_H */ 148