4 * Definitions for talking to the Open Firmware PROM on
5 * Power Macintosh and other computers.
7 * Copyright (C) 1996-2005 Paul Mackerras.
9 * Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
10 * Updates for SPARC64 by David S. Miller
11 * Derived from PowerPC and Sparc prom.h files by Stephen Rothwell, IBM Corp.
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version
16 * 2 of the License, or (at your option) any later version.
18 #include <linux/types.h>
19 #include <linux/bitops.h>
20 #include <linux/errno.h>
21 #include <linux/kobject.h>
22 #include <linux/mod_devicetable.h>
23 #include <linux/spinlock.h>
24 #include <linux/topology.h>
25 #include <linux/notifier.h>
27 #include <asm/byteorder.h>
28 #include <asm/errno.h>
37 struct property *next;
39 unsigned int unique_id;
40 struct bin_attribute attr;
43 #if defined(CONFIG_SPARC)
44 struct of_irq_controller;
51 const char *full_name;
53 struct property *properties;
54 struct property *deadprops; /* removed properties */
55 struct device_node *parent;
56 struct device_node *child;
57 struct device_node *sibling;
58 struct device_node *next; /* next device of same type */
62 #if defined(CONFIG_SPARC)
63 const char *path_component_name;
64 unsigned int unique_id;
65 struct of_irq_controller *irq_trans;
69 #define MAX_PHANDLE_ARGS 16
70 struct of_phandle_args {
71 struct device_node *np;
73 uint32_t args[MAX_PHANDLE_ARGS];
76 /* initialize a node */
77 extern struct kobj_type of_node_ktype;
78 static inline void of_node_init(struct device_node *node)
80 kobject_init(&node->kobj, &of_node_ktype);
83 /* true when node is initialized */
84 static inline int of_node_is_initialized(struct device_node *node)
86 return node && node->kobj.state_initialized;
89 /* true when node is attached (i.e. present on sysfs) */
90 static inline int of_node_is_attached(struct device_node *node)
92 return node && node->kobj.state_in_sysfs;
95 #ifdef CONFIG_OF_DYNAMIC
96 extern struct device_node *of_node_get(struct device_node *node);
97 extern void of_node_put(struct device_node *node);
98 #else /* CONFIG_OF_DYNAMIC */
99 /* Dummy ref counting routines - to be implemented later */
100 static inline struct device_node *of_node_get(struct device_node *node)
104 static inline void of_node_put(struct device_node *node) { }
105 #endif /* !CONFIG_OF_DYNAMIC */
109 /* Pointer for first entry in chain of all nodes. */
110 extern struct device_node *of_root;
111 extern struct device_node *of_chosen;
112 extern struct device_node *of_aliases;
113 extern struct device_node *of_stdout;
114 extern raw_spinlock_t devtree_lock;
116 static inline bool of_have_populated_dt(void)
118 return of_root != NULL;
121 static inline bool of_node_is_root(const struct device_node *node)
123 return node && (node->parent == NULL);
126 static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
128 return test_bit(flag, &n->_flags);
131 static inline int of_node_test_and_set_flag(struct device_node *n,
134 return test_and_set_bit(flag, &n->_flags);
137 static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
139 set_bit(flag, &n->_flags);
142 static inline void of_node_clear_flag(struct device_node *n, unsigned long flag)
144 clear_bit(flag, &n->_flags);
147 static inline int of_property_check_flag(struct property *p, unsigned long flag)
149 return test_bit(flag, &p->_flags);
152 static inline void of_property_set_flag(struct property *p, unsigned long flag)
154 set_bit(flag, &p->_flags);
157 static inline void of_property_clear_flag(struct property *p, unsigned long flag)
159 clear_bit(flag, &p->_flags);
162 extern struct device_node *__of_find_all_nodes(struct device_node *prev);
163 extern struct device_node *of_find_all_nodes(struct device_node *prev);
166 * OF address retrieval & translation
169 /* Helper to read a big number; size is in cells (not bytes) */
170 static inline u64 of_read_number(const __be32 *cell, int size)
174 r = (r << 32) | be32_to_cpu(*(cell++));
178 /* Like of_read_number, but we want an unsigned long result */
179 static inline unsigned long of_read_ulong(const __be32 *cell, int size)
181 /* toss away upper bits if unsigned long is smaller than u64 */
182 return of_read_number(cell, size);
185 #if defined(CONFIG_SPARC)
186 #include <asm/prom.h>
189 /* Default #address and #size cells. Allow arch asm/prom.h to override */
190 #if !defined(OF_ROOT_NODE_ADDR_CELLS_DEFAULT)
191 #define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1
192 #define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1
195 /* Default string compare functions, Allow arch asm/prom.h to override */
196 #if !defined(of_compat_cmp)
197 #define of_compat_cmp(s1, s2, l) strcasecmp((s1), (s2))
198 #define of_prop_cmp(s1, s2) strcmp((s1), (s2))
199 #define of_node_cmp(s1, s2) strcasecmp((s1), (s2))
202 /* flag descriptions */
203 #define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
204 #define OF_DETACHED 2 /* node has been detached from the device tree */
205 #define OF_POPULATED 3 /* device already created for the node */
206 #define OF_POPULATED_BUS 4 /* of_platform_populate recursed to children of this node */
208 #define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
209 #define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
211 #define OF_BAD_ADDR ((u64)-1)
213 static inline const char *of_node_full_name(const struct device_node *np)
215 return np ? np->full_name : "<no-node>";
218 #define for_each_of_allnodes_from(from, dn) \
219 for (dn = __of_find_all_nodes(from); dn; dn = __of_find_all_nodes(dn))
220 #define for_each_of_allnodes(dn) for_each_of_allnodes_from(NULL, dn)
221 extern struct device_node *of_find_node_by_name(struct device_node *from,
223 extern struct device_node *of_find_node_by_type(struct device_node *from,
225 extern struct device_node *of_find_compatible_node(struct device_node *from,
226 const char *type, const char *compat);
227 extern struct device_node *of_find_matching_node_and_match(
228 struct device_node *from,
229 const struct of_device_id *matches,
230 const struct of_device_id **match);
232 extern struct device_node *of_find_node_by_path(const char *path);
233 extern struct device_node *of_find_node_by_phandle(phandle handle);
234 extern struct device_node *of_get_parent(const struct device_node *node);
235 extern struct device_node *of_get_next_parent(struct device_node *node);
236 extern struct device_node *of_get_next_child(const struct device_node *node,
237 struct device_node *prev);
238 extern struct device_node *of_get_next_available_child(
239 const struct device_node *node, struct device_node *prev);
241 extern struct device_node *of_get_child_by_name(const struct device_node *node,
245 extern struct device_node *of_find_next_cache_node(const struct device_node *);
246 extern struct device_node *of_find_node_with_property(
247 struct device_node *from, const char *prop_name);
249 extern struct property *of_find_property(const struct device_node *np,
252 extern int of_property_count_elems_of_size(const struct device_node *np,
253 const char *propname, int elem_size);
254 extern int of_property_read_u32_index(const struct device_node *np,
255 const char *propname,
256 u32 index, u32 *out_value);
257 extern int of_property_read_u8_array(const struct device_node *np,
258 const char *propname, u8 *out_values, size_t sz);
259 extern int of_property_read_u16_array(const struct device_node *np,
260 const char *propname, u16 *out_values, size_t sz);
261 extern int of_property_read_u32_array(const struct device_node *np,
262 const char *propname,
265 extern int of_property_read_u64(const struct device_node *np,
266 const char *propname, u64 *out_value);
268 extern int of_property_read_string(struct device_node *np,
269 const char *propname,
270 const char **out_string);
271 extern int of_property_match_string(struct device_node *np,
272 const char *propname,
274 extern int of_property_read_string_helper(struct device_node *np,
275 const char *propname,
276 const char **out_strs, size_t sz, int index);
277 extern int of_device_is_compatible(const struct device_node *device,
279 extern bool of_device_is_available(const struct device_node *device);
280 extern const void *of_get_property(const struct device_node *node,
283 extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread);
284 #define for_each_property_of_node(dn, pp) \
285 for (pp = dn->properties; pp != NULL; pp = pp->next)
287 extern int of_n_addr_cells(struct device_node *np);
288 extern int of_n_size_cells(struct device_node *np);
289 extern const struct of_device_id *of_match_node(
290 const struct of_device_id *matches, const struct device_node *node);
291 extern int of_modalias_node(struct device_node *node, char *modalias, int len);
292 extern void of_print_phandle_args(const char *msg, const struct of_phandle_args *args);
293 extern struct device_node *of_parse_phandle(const struct device_node *np,
294 const char *phandle_name,
296 extern int of_parse_phandle_with_args(const struct device_node *np,
297 const char *list_name, const char *cells_name, int index,
298 struct of_phandle_args *out_args);
299 extern int of_parse_phandle_with_fixed_args(const struct device_node *np,
300 const char *list_name, int cells_count, int index,
301 struct of_phandle_args *out_args);
302 extern int of_count_phandle_with_args(const struct device_node *np,
303 const char *list_name, const char *cells_name);
305 extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align));
306 extern int of_alias_get_id(struct device_node *np, const char *stem);
308 extern int of_machine_is_compatible(const char *compat);
310 extern int of_add_property(struct device_node *np, struct property *prop);
311 extern int of_remove_property(struct device_node *np, struct property *prop);
312 extern int of_update_property(struct device_node *np, struct property *newprop);
314 /* For updating the device tree at runtime */
315 #define OF_RECONFIG_ATTACH_NODE 0x0001
316 #define OF_RECONFIG_DETACH_NODE 0x0002
317 #define OF_RECONFIG_ADD_PROPERTY 0x0003
318 #define OF_RECONFIG_REMOVE_PROPERTY 0x0004
319 #define OF_RECONFIG_UPDATE_PROPERTY 0x0005
321 struct of_prop_reconfig {
322 struct device_node *dn;
323 struct property *prop;
324 struct property *old_prop;
327 extern int of_reconfig_notifier_register(struct notifier_block *);
328 extern int of_reconfig_notifier_unregister(struct notifier_block *);
329 extern int of_reconfig_notify(unsigned long, void *);
330 extern int of_reconfig_get_state_change(unsigned long action, void *arg);
332 extern int of_attach_node(struct device_node *);
333 extern int of_detach_node(struct device_node *);
335 #define of_match_ptr(_ptr) (_ptr)
338 * struct property *prop;
342 * of_property_for_each_u32(np, "propname", prop, p, u)
343 * printk("U32 value: %x\n", u);
345 const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur,
348 * struct property *prop;
351 * of_property_for_each_string(np, "propname", prop, s)
352 * printk("String value: %s\n", s);
354 const char *of_prop_next_string(struct property *prop, const char *cur);
356 bool of_console_check(struct device_node *dn, char *name, int index);
358 #else /* CONFIG_OF */
360 static inline const char* of_node_full_name(const struct device_node *np)
365 static inline struct device_node *of_find_node_by_name(struct device_node *from,
371 static inline struct device_node *of_find_node_by_type(struct device_node *from,
377 static inline struct device_node *of_find_matching_node_and_match(
378 struct device_node *from,
379 const struct of_device_id *matches,
380 const struct of_device_id **match)
385 static inline struct device_node *of_find_node_by_path(const char *path)
390 static inline struct device_node *of_get_parent(const struct device_node *node)
395 static inline struct device_node *of_get_next_child(
396 const struct device_node *node, struct device_node *prev)
401 static inline struct device_node *of_get_next_available_child(
402 const struct device_node *node, struct device_node *prev)
407 static inline struct device_node *of_find_node_with_property(
408 struct device_node *from, const char *prop_name)
413 static inline bool of_have_populated_dt(void)
418 static inline struct device_node *of_get_child_by_name(
419 const struct device_node *node,
425 static inline int of_device_is_compatible(const struct device_node *device,
431 static inline bool of_device_is_available(const struct device_node *device)
436 static inline struct property *of_find_property(const struct device_node *np,
443 static inline struct device_node *of_find_compatible_node(
444 struct device_node *from,
451 static inline int of_property_count_elems_of_size(const struct device_node *np,
452 const char *propname, int elem_size)
457 static inline int of_property_read_u32_index(const struct device_node *np,
458 const char *propname, u32 index, u32 *out_value)
463 static inline int of_property_read_u8_array(const struct device_node *np,
464 const char *propname, u8 *out_values, size_t sz)
469 static inline int of_property_read_u16_array(const struct device_node *np,
470 const char *propname, u16 *out_values, size_t sz)
475 static inline int of_property_read_u32_array(const struct device_node *np,
476 const char *propname,
477 u32 *out_values, size_t sz)
482 static inline int of_property_read_string(struct device_node *np,
483 const char *propname,
484 const char **out_string)
489 static inline int of_property_read_string_helper(struct device_node *np,
490 const char *propname,
491 const char **out_strs, size_t sz, int index)
496 static inline const void *of_get_property(const struct device_node *node,
503 static inline struct device_node *of_get_cpu_node(int cpu,
504 unsigned int *thread)
509 static inline int of_property_read_u64(const struct device_node *np,
510 const char *propname, u64 *out_value)
515 static inline int of_property_match_string(struct device_node *np,
516 const char *propname,
522 static inline struct device_node *of_parse_phandle(const struct device_node *np,
523 const char *phandle_name,
529 static inline int of_parse_phandle_with_args(struct device_node *np,
530 const char *list_name,
531 const char *cells_name,
533 struct of_phandle_args *out_args)
538 static inline int of_parse_phandle_with_fixed_args(const struct device_node *np,
539 const char *list_name, int cells_count, int index,
540 struct of_phandle_args *out_args)
545 static inline int of_count_phandle_with_args(struct device_node *np,
546 const char *list_name,
547 const char *cells_name)
552 static inline int of_alias_get_id(struct device_node *np, const char *stem)
557 static inline int of_machine_is_compatible(const char *compat)
562 static inline bool of_console_check(const struct device_node *dn, const char *name, int index)
567 static inline const __be32 *of_prop_next_u32(struct property *prop,
568 const __be32 *cur, u32 *pu)
573 static inline const char *of_prop_next_string(struct property *prop,
579 #define of_match_ptr(_ptr) NULL
580 #define of_match_node(_matches, _node) NULL
581 #endif /* CONFIG_OF */
583 #if defined(CONFIG_OF) && defined(CONFIG_NUMA)
584 extern int of_node_to_nid(struct device_node *np);
586 static inline int of_node_to_nid(struct device_node *device) { return 0; }
589 static inline struct device_node *of_find_matching_node(
590 struct device_node *from,
591 const struct of_device_id *matches)
593 return of_find_matching_node_and_match(from, matches, NULL);
597 * of_property_count_u8_elems - Count the number of u8 elements in a property
599 * @np: device node from which the property value is to be read.
600 * @propname: name of the property to be searched.
602 * Search for a property in a device node and count the number of u8 elements
603 * in it. Returns number of elements on sucess, -EINVAL if the property does
604 * not exist or its length does not match a multiple of u8 and -ENODATA if the
605 * property does not have a value.
607 static inline int of_property_count_u8_elems(const struct device_node *np,
608 const char *propname)
610 return of_property_count_elems_of_size(np, propname, sizeof(u8));
614 * of_property_count_u16_elems - Count the number of u16 elements in a property
616 * @np: device node from which the property value is to be read.
617 * @propname: name of the property to be searched.
619 * Search for a property in a device node and count the number of u16 elements
620 * in it. Returns number of elements on sucess, -EINVAL if the property does
621 * not exist or its length does not match a multiple of u16 and -ENODATA if the
622 * property does not have a value.
624 static inline int of_property_count_u16_elems(const struct device_node *np,
625 const char *propname)
627 return of_property_count_elems_of_size(np, propname, sizeof(u16));
631 * of_property_count_u32_elems - Count the number of u32 elements in a property
633 * @np: device node from which the property value is to be read.
634 * @propname: name of the property to be searched.
636 * Search for a property in a device node and count the number of u32 elements
637 * in it. Returns number of elements on sucess, -EINVAL if the property does
638 * not exist or its length does not match a multiple of u32 and -ENODATA if the
639 * property does not have a value.
641 static inline int of_property_count_u32_elems(const struct device_node *np,
642 const char *propname)
644 return of_property_count_elems_of_size(np, propname, sizeof(u32));
648 * of_property_count_u64_elems - Count the number of u64 elements in a property
650 * @np: device node from which the property value is to be read.
651 * @propname: name of the property to be searched.
653 * Search for a property in a device node and count the number of u64 elements
654 * in it. Returns number of elements on sucess, -EINVAL if the property does
655 * not exist or its length does not match a multiple of u64 and -ENODATA if the
656 * property does not have a value.
658 static inline int of_property_count_u64_elems(const struct device_node *np,
659 const char *propname)
661 return of_property_count_elems_of_size(np, propname, sizeof(u64));
665 * of_property_read_string_array() - Read an array of strings from a multiple
667 * @np: device node from which the property value is to be read.
668 * @propname: name of the property to be searched.
669 * @out_strs: output array of string pointers.
670 * @sz: number of array elements to read.
672 * Search for a property in a device tree node and retrieve a list of
673 * terminated string values (pointer to data, not a copy) in that property.
675 * If @out_strs is NULL, the number of strings in the property is returned.
677 static inline int of_property_read_string_array(struct device_node *np,
678 const char *propname, const char **out_strs,
681 return of_property_read_string_helper(np, propname, out_strs, sz, 0);
685 * of_property_count_strings() - Find and return the number of strings from a
686 * multiple strings property.
687 * @np: device node from which the property value is to be read.
688 * @propname: name of the property to be searched.
690 * Search for a property in a device tree node and retrieve the number of null
691 * terminated string contain in it. Returns the number of strings on
692 * success, -EINVAL if the property does not exist, -ENODATA if property
693 * does not have a value, and -EILSEQ if the string is not null-terminated
694 * within the length of the property data.
696 static inline int of_property_count_strings(struct device_node *np,
697 const char *propname)
699 return of_property_read_string_helper(np, propname, NULL, 0, 0);
703 * of_property_read_string_index() - Find and read a string from a multiple
705 * @np: device node from which the property value is to be read.
706 * @propname: name of the property to be searched.
707 * @index: index of the string in the list of strings
708 * @out_string: pointer to null terminated return string, modified only if
711 * Search for a property in a device tree node and retrieve a null
712 * terminated string value (pointer to data, not a copy) in the list of strings
713 * contained in that property.
714 * Returns 0 on success, -EINVAL if the property does not exist, -ENODATA if
715 * property does not have a value, and -EILSEQ if the string is not
716 * null-terminated within the length of the property data.
718 * The out_string pointer is modified only if a valid string can be decoded.
720 static inline int of_property_read_string_index(struct device_node *np,
721 const char *propname,
722 int index, const char **output)
724 int rc = of_property_read_string_helper(np, propname, output, 1, index);
725 return rc < 0 ? rc : 0;
729 * of_property_read_bool - Findfrom a property
730 * @np: device node from which the property value is to be read.
731 * @propname: name of the property to be searched.
733 * Search for a property in a device node.
734 * Returns true if the property exist false otherwise.
736 static inline bool of_property_read_bool(const struct device_node *np,
737 const char *propname)
739 struct property *prop = of_find_property(np, propname, NULL);
741 return prop ? true : false;
744 static inline int of_property_read_u8(const struct device_node *np,
745 const char *propname,
748 return of_property_read_u8_array(np, propname, out_value, 1);
751 static inline int of_property_read_u16(const struct device_node *np,
752 const char *propname,
755 return of_property_read_u16_array(np, propname, out_value, 1);
758 static inline int of_property_read_u32(const struct device_node *np,
759 const char *propname,
762 return of_property_read_u32_array(np, propname, out_value, 1);
765 static inline int of_property_read_s32(const struct device_node *np,
766 const char *propname,
769 return of_property_read_u32(np, propname, (u32*) out_value);
772 #define of_property_for_each_u32(np, propname, prop, p, u) \
773 for (prop = of_find_property(np, propname, NULL), \
774 p = of_prop_next_u32(prop, NULL, &u); \
776 p = of_prop_next_u32(prop, p, &u))
778 #define of_property_for_each_string(np, propname, prop, s) \
779 for (prop = of_find_property(np, propname, NULL), \
780 s = of_prop_next_string(prop, NULL); \
782 s = of_prop_next_string(prop, s))
784 #define for_each_node_by_name(dn, name) \
785 for (dn = of_find_node_by_name(NULL, name); dn; \
786 dn = of_find_node_by_name(dn, name))
787 #define for_each_node_by_type(dn, type) \
788 for (dn = of_find_node_by_type(NULL, type); dn; \
789 dn = of_find_node_by_type(dn, type))
790 #define for_each_compatible_node(dn, type, compatible) \
791 for (dn = of_find_compatible_node(NULL, type, compatible); dn; \
792 dn = of_find_compatible_node(dn, type, compatible))
793 #define for_each_matching_node(dn, matches) \
794 for (dn = of_find_matching_node(NULL, matches); dn; \
795 dn = of_find_matching_node(dn, matches))
796 #define for_each_matching_node_and_match(dn, matches, match) \
797 for (dn = of_find_matching_node_and_match(NULL, matches, match); \
798 dn; dn = of_find_matching_node_and_match(dn, matches, match))
800 #define for_each_child_of_node(parent, child) \
801 for (child = of_get_next_child(parent, NULL); child != NULL; \
802 child = of_get_next_child(parent, child))
803 #define for_each_available_child_of_node(parent, child) \
804 for (child = of_get_next_available_child(parent, NULL); child != NULL; \
805 child = of_get_next_available_child(parent, child))
807 #define for_each_node_with_property(dn, prop_name) \
808 for (dn = of_find_node_with_property(NULL, prop_name); dn; \
809 dn = of_find_node_with_property(dn, prop_name))
811 static inline int of_get_child_count(const struct device_node *np)
813 struct device_node *child;
816 for_each_child_of_node(np, child)
822 static inline int of_get_available_child_count(const struct device_node *np)
824 struct device_node *child;
827 for_each_available_child_of_node(np, child)
834 #define _OF_DECLARE(table, name, compat, fn, fn_type) \
835 static const struct of_device_id __of_table_##name \
836 __used __section(__##table##_of_table) \
837 = { .compatible = compat, \
838 .data = (fn == (fn_type)NULL) ? fn : fn }
840 #define _OF_DECLARE(table, name, compat, fn, fn_type) \
841 static const struct of_device_id __of_table_##name \
842 __attribute__((unused)) \
843 = { .compatible = compat, \
844 .data = (fn == (fn_type)NULL) ? fn : fn }
847 typedef int (*of_init_fn_2)(struct device_node *, struct device_node *);
848 typedef void (*of_init_fn_1)(struct device_node *);
850 #define OF_DECLARE_1(table, name, compat, fn) \
851 _OF_DECLARE(table, name, compat, fn, of_init_fn_1)
852 #define OF_DECLARE_2(table, name, compat, fn) \
853 _OF_DECLARE(table, name, compat, fn, of_init_fn_2)
856 * struct of_changeset_entry - Holds a changeset entry
858 * @node: list_head for the log list
859 * @action: notifier action
860 * @np: pointer to the device node affected
861 * @prop: pointer to the property affected
862 * @old_prop: hold a pointer to the original property
864 * Every modification of the device tree during a changeset
865 * is held in a list of of_changeset_entry structures.
866 * That way we can recover from a partial application, or we can
867 * revert the changeset
869 struct of_changeset_entry {
870 struct list_head node;
871 unsigned long action;
872 struct device_node *np;
873 struct property *prop;
874 struct property *old_prop;
878 * struct of_changeset - changeset tracker structure
880 * @entries: list_head for the changeset entries
882 * changesets are a convenient way to apply bulk changes to the
883 * live tree. In case of an error, changes are rolled-back.
884 * changesets live on after initial application, and if not
885 * destroyed after use, they can be reverted in one single call.
887 struct of_changeset {
888 struct list_head entries;
891 enum of_reconfig_change {
892 OF_RECONFIG_NO_CHANGE = 0,
893 OF_RECONFIG_CHANGE_ADD,
894 OF_RECONFIG_CHANGE_REMOVE,
897 #ifdef CONFIG_OF_DYNAMIC
898 extern void of_changeset_init(struct of_changeset *ocs);
899 extern void of_changeset_destroy(struct of_changeset *ocs);
900 extern int of_changeset_apply(struct of_changeset *ocs);
901 extern int of_changeset_revert(struct of_changeset *ocs);
902 extern int of_changeset_action(struct of_changeset *ocs,
903 unsigned long action, struct device_node *np,
904 struct property *prop);
906 static inline int of_changeset_attach_node(struct of_changeset *ocs,
907 struct device_node *np)
909 return of_changeset_action(ocs, OF_RECONFIG_ATTACH_NODE, np, NULL);
912 static inline int of_changeset_detach_node(struct of_changeset *ocs,
913 struct device_node *np)
915 return of_changeset_action(ocs, OF_RECONFIG_DETACH_NODE, np, NULL);
918 static inline int of_changeset_add_property(struct of_changeset *ocs,
919 struct device_node *np, struct property *prop)
921 return of_changeset_action(ocs, OF_RECONFIG_ADD_PROPERTY, np, prop);
924 static inline int of_changeset_remove_property(struct of_changeset *ocs,
925 struct device_node *np, struct property *prop)
927 return of_changeset_action(ocs, OF_RECONFIG_REMOVE_PROPERTY, np, prop);
930 static inline int of_changeset_update_property(struct of_changeset *ocs,
931 struct device_node *np, struct property *prop)
933 return of_changeset_action(ocs, OF_RECONFIG_UPDATE_PROPERTY, np, prop);
937 /* CONFIG_OF_RESOLVE api */
938 extern int of_resolve_phandles(struct device_node *tree);
940 #endif /* _LINUX_OF_H */