1 #ifndef _LINUX_OF_H 2 #define _LINUX_OF_H 3 /* 4 * Definitions for talking to the Open Firmware PROM on 5 * Power Macintosh and other computers. 6 * 7 * Copyright (C) 1996-2005 Paul Mackerras. 8 * 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. 12 * 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. 17 */ 18 #include <linux/types.h> 19 #include <linux/bitops.h> 20 #include <linux/mod_devicetable.h> 21 22 #include <asm/prom.h> 23 24 /* flag descriptions */ 25 #define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */ 26 #define OF_DETACHED 2 /* node has been detached from the device tree */ 27 28 #define OF_BAD_ADDR ((u64)-1) 29 30 extern struct device_node *of_find_node_by_name(struct device_node *from, 31 const char *name); 32 #define for_each_node_by_name(dn, name) \ 33 for (dn = of_find_node_by_name(NULL, name); dn; \ 34 dn = of_find_node_by_name(dn, name)) 35 extern struct device_node *of_find_node_by_type(struct device_node *from, 36 const char *type); 37 #define for_each_node_by_type(dn, type) \ 38 for (dn = of_find_node_by_type(NULL, type); dn; \ 39 dn = of_find_node_by_type(dn, type)) 40 extern struct device_node *of_find_compatible_node(struct device_node *from, 41 const char *type, const char *compat); 42 #define for_each_compatible_node(dn, type, compatible) \ 43 for (dn = of_find_compatible_node(NULL, type, compatible); dn; \ 44 dn = of_find_compatible_node(dn, type, compatible)) 45 extern struct device_node *of_find_matching_node(struct device_node *from, 46 const struct of_device_id *matches); 47 #define for_each_matching_node(dn, matches) \ 48 for (dn = of_find_matching_node(NULL, matches); dn; \ 49 dn = of_find_matching_node(dn, matches)) 50 extern struct device_node *of_find_node_by_path(const char *path); 51 extern struct device_node *of_find_node_by_phandle(phandle handle); 52 extern struct device_node *of_get_parent(const struct device_node *node); 53 extern struct device_node *of_get_next_parent(struct device_node *node); 54 extern struct device_node *of_get_next_child(const struct device_node *node, 55 struct device_node *prev); 56 #define for_each_child_of_node(parent, child) \ 57 for (child = of_get_next_child(parent, NULL); child != NULL; \ 58 child = of_get_next_child(parent, child)) 59 60 extern struct device_node *of_find_node_with_property( 61 struct device_node *from, const char *prop_name); 62 #define for_each_node_with_property(dn, prop_name) \ 63 for (dn = of_find_node_with_property(NULL, prop_name); dn; \ 64 dn = of_find_node_with_property(dn, prop_name)) 65 66 extern struct property *of_find_property(const struct device_node *np, 67 const char *name, 68 int *lenp); 69 extern int of_device_is_compatible(const struct device_node *device, 70 const char *); 71 extern int of_device_is_available(const struct device_node *device); 72 extern const void *of_get_property(const struct device_node *node, 73 const char *name, 74 int *lenp); 75 extern int of_n_addr_cells(struct device_node *np); 76 extern int of_n_size_cells(struct device_node *np); 77 extern const struct of_device_id *of_match_node( 78 const struct of_device_id *matches, const struct device_node *node); 79 extern int of_modalias_node(struct device_node *node, char *modalias, int len); 80 extern int of_parse_phandles_with_args(struct device_node *np, 81 const char *list_name, const char *cells_name, int index, 82 struct device_node **out_node, const void **out_args); 83 84 #endif /* _LINUX_OF_H */ 85