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76c1ce78 SR |
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> | |
1977f032 | 19 | #include <linux/bitops.h> |
e51130c0 | 20 | #include <linux/errno.h> |
75b57ecf | 21 | #include <linux/kobject.h> |
283029d1 | 22 | #include <linux/mod_devicetable.h> |
0d351c3e | 23 | #include <linux/spinlock.h> |
5ca4db61 | 24 | #include <linux/topology.h> |
1cf3d8b3 | 25 | #include <linux/notifier.h> |
76c1ce78 | 26 | |
2e89e685 | 27 | #include <asm/byteorder.h> |
d0a99402 | 28 | #include <asm/errno.h> |
2e89e685 | 29 | |
731581e6 GL |
30 | typedef u32 phandle; |
31 | typedef u32 ihandle; | |
32 | ||
33 | struct property { | |
34 | char *name; | |
35 | int length; | |
36 | void *value; | |
37 | struct property *next; | |
38 | unsigned long _flags; | |
39 | unsigned int unique_id; | |
75b57ecf | 40 | struct bin_attribute attr; |
731581e6 GL |
41 | }; |
42 | ||
6f192492 GL |
43 | #if defined(CONFIG_SPARC) |
44 | struct of_irq_controller; | |
45 | #endif | |
46 | ||
47 | struct device_node { | |
48 | const char *name; | |
49 | const char *type; | |
6016a363 | 50 | phandle phandle; |
c22618a1 | 51 | const char *full_name; |
6f192492 GL |
52 | |
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 */ | |
59 | struct device_node *allnext; /* next in list of all nodes */ | |
60 | struct proc_dir_entry *pde; /* this node's proc directory */ | |
75b57ecf | 61 | struct kobject kobj; |
6f192492 GL |
62 | unsigned long _flags; |
63 | void *data; | |
64 | #if defined(CONFIG_SPARC) | |
c22618a1 | 65 | const char *path_component_name; |
6f192492 GL |
66 | unsigned int unique_id; |
67 | struct of_irq_controller *irq_trans; | |
68 | #endif | |
69 | }; | |
70 | ||
b66548e2 | 71 | #define MAX_PHANDLE_ARGS 16 |
15c9a0ac GL |
72 | struct of_phandle_args { |
73 | struct device_node *np; | |
74 | int args_count; | |
75 | uint32_t args[MAX_PHANDLE_ARGS]; | |
76 | }; | |
77 | ||
75b57ecf GL |
78 | extern int of_node_add(struct device_node *node); |
79 | ||
0f22dd39 GL |
80 | #ifdef CONFIG_OF_DYNAMIC |
81 | extern struct device_node *of_node_get(struct device_node *node); | |
82 | extern void of_node_put(struct device_node *node); | |
83 | #else /* CONFIG_OF_DYNAMIC */ | |
3ecdd051 RH |
84 | /* Dummy ref counting routines - to be implemented later */ |
85 | static inline struct device_node *of_node_get(struct device_node *node) | |
86 | { | |
87 | return node; | |
88 | } | |
0f22dd39 GL |
89 | static inline void of_node_put(struct device_node *node) { } |
90 | #endif /* !CONFIG_OF_DYNAMIC */ | |
3ecdd051 | 91 | |
c9e358df GL |
92 | #ifdef CONFIG_OF |
93 | ||
41f88009 | 94 | /* Pointer for first entry in chain of all nodes. */ |
465aac6d | 95 | extern struct device_node *of_allnodes; |
fc0bdae4 | 96 | extern struct device_node *of_chosen; |
611cad72 | 97 | extern struct device_node *of_aliases; |
d6d3c4e6 | 98 | extern raw_spinlock_t devtree_lock; |
41f88009 | 99 | |
3bcbaf6e SAS |
100 | static inline bool of_have_populated_dt(void) |
101 | { | |
465aac6d | 102 | return of_allnodes != NULL; |
3bcbaf6e SAS |
103 | } |
104 | ||
035ebefc AS |
105 | static inline bool of_node_is_root(const struct device_node *node) |
106 | { | |
107 | return node && (node->parent == NULL); | |
108 | } | |
109 | ||
50436312 GL |
110 | static inline int of_node_check_flag(struct device_node *n, unsigned long flag) |
111 | { | |
112 | return test_bit(flag, &n->_flags); | |
113 | } | |
114 | ||
115 | static inline void of_node_set_flag(struct device_node *n, unsigned long flag) | |
116 | { | |
117 | set_bit(flag, &n->_flags); | |
118 | } | |
119 | ||
588453c6 PA |
120 | static inline void of_node_clear_flag(struct device_node *n, unsigned long flag) |
121 | { | |
122 | clear_bit(flag, &n->_flags); | |
123 | } | |
124 | ||
125 | static inline int of_property_check_flag(struct property *p, unsigned long flag) | |
126 | { | |
127 | return test_bit(flag, &p->_flags); | |
128 | } | |
129 | ||
130 | static inline void of_property_set_flag(struct property *p, unsigned long flag) | |
131 | { | |
132 | set_bit(flag, &p->_flags); | |
133 | } | |
134 | ||
135 | static inline void of_property_clear_flag(struct property *p, unsigned long flag) | |
136 | { | |
137 | clear_bit(flag, &p->_flags); | |
138 | } | |
139 | ||
e91edcf5 GL |
140 | extern struct device_node *of_find_all_nodes(struct device_node *prev); |
141 | ||
b6caf2ad | 142 | /* |
3d6b8828 | 143 | * OF address retrieval & translation |
b6caf2ad GL |
144 | */ |
145 | ||
146 | /* Helper to read a big number; size is in cells (not bytes) */ | |
2e89e685 | 147 | static inline u64 of_read_number(const __be32 *cell, int size) |
b6caf2ad GL |
148 | { |
149 | u64 r = 0; | |
150 | while (size--) | |
2e89e685 | 151 | r = (r << 32) | be32_to_cpu(*(cell++)); |
b6caf2ad GL |
152 | return r; |
153 | } | |
154 | ||
155 | /* Like of_read_number, but we want an unsigned long result */ | |
2e89e685 | 156 | static inline unsigned long of_read_ulong(const __be32 *cell, int size) |
b6caf2ad | 157 | { |
2be09cb9 GL |
158 | /* toss away upper bits if unsigned long is smaller than u64 */ |
159 | return of_read_number(cell, size); | |
b6caf2ad | 160 | } |
b6caf2ad | 161 | |
b5b4bb3f | 162 | #if defined(CONFIG_SPARC) |
76c1ce78 | 163 | #include <asm/prom.h> |
b5b4bb3f | 164 | #endif |
76c1ce78 | 165 | |
7c7b60cb GL |
166 | /* Default #address and #size cells. Allow arch asm/prom.h to override */ |
167 | #if !defined(OF_ROOT_NODE_ADDR_CELLS_DEFAULT) | |
168 | #define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1 | |
169 | #define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1 | |
170 | #endif | |
171 | ||
172 | /* Default string compare functions, Allow arch asm/prom.h to override */ | |
173 | #if !defined(of_compat_cmp) | |
1976152f | 174 | #define of_compat_cmp(s1, s2, l) strcasecmp((s1), (s2)) |
7c7b60cb GL |
175 | #define of_prop_cmp(s1, s2) strcmp((s1), (s2)) |
176 | #define of_node_cmp(s1, s2) strcasecmp((s1), (s2)) | |
177 | #endif | |
178 | ||
76c1ce78 SR |
179 | /* flag descriptions */ |
180 | #define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */ | |
181 | #define OF_DETACHED 2 /* node has been detached from the device tree */ | |
182 | ||
61e955db GL |
183 | #define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags) |
184 | #define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags) | |
185 | ||
76c1ce78 SR |
186 | #define OF_BAD_ADDR ((u64)-1) |
187 | ||
c0a05bf0 | 188 | static inline const char *of_node_full_name(const struct device_node *np) |
74a7f084 GL |
189 | { |
190 | return np ? np->full_name : "<no-node>"; | |
191 | } | |
192 | ||
75b57ecf GL |
193 | #define for_each_of_allnodes(dn) \ |
194 | for (dn = of_allnodes; dn; dn = dn->allnext) | |
76c1ce78 SR |
195 | extern struct device_node *of_find_node_by_name(struct device_node *from, |
196 | const char *name); | |
76c1ce78 SR |
197 | extern struct device_node *of_find_node_by_type(struct device_node *from, |
198 | const char *type); | |
76c1ce78 SR |
199 | extern struct device_node *of_find_compatible_node(struct device_node *from, |
200 | const char *type, const char *compat); | |
50c8af4c SW |
201 | extern struct device_node *of_find_matching_node_and_match( |
202 | struct device_node *from, | |
203 | const struct of_device_id *matches, | |
204 | const struct of_device_id **match); | |
662372e4 | 205 | |
76c1ce78 SR |
206 | extern struct device_node *of_find_node_by_path(const char *path); |
207 | extern struct device_node *of_find_node_by_phandle(phandle handle); | |
208 | extern struct device_node *of_get_parent(const struct device_node *node); | |
f4eb0107 | 209 | extern struct device_node *of_get_next_parent(struct device_node *node); |
76c1ce78 SR |
210 | extern struct device_node *of_get_next_child(const struct device_node *node, |
211 | struct device_node *prev); | |
3296193d TT |
212 | extern struct device_node *of_get_next_available_child( |
213 | const struct device_node *node, struct device_node *prev); | |
214 | ||
9c19761a SK |
215 | extern struct device_node *of_get_child_by_name(const struct device_node *node, |
216 | const char *name); | |
954e04b9 | 217 | |
a3e31b45 SK |
218 | /* cache lookup */ |
219 | extern struct device_node *of_find_next_cache_node(const struct device_node *); | |
1e291b14 ME |
220 | extern struct device_node *of_find_node_with_property( |
221 | struct device_node *from, const char *prop_name); | |
1e291b14 | 222 | |
76c1ce78 SR |
223 | extern struct property *of_find_property(const struct device_node *np, |
224 | const char *name, | |
225 | int *lenp); | |
3daf3726 TP |
226 | extern int of_property_read_u32_index(const struct device_node *np, |
227 | const char *propname, | |
228 | u32 index, u32 *out_value); | |
be193249 VK |
229 | extern int of_property_read_u8_array(const struct device_node *np, |
230 | const char *propname, u8 *out_values, size_t sz); | |
231 | extern int of_property_read_u16_array(const struct device_node *np, | |
232 | const char *propname, u16 *out_values, size_t sz); | |
0e373639 | 233 | extern int of_property_read_u32_array(const struct device_node *np, |
aac285c6 | 234 | const char *propname, |
0e373639 RH |
235 | u32 *out_values, |
236 | size_t sz); | |
4cd7f7a3 JI |
237 | extern int of_property_read_u64(const struct device_node *np, |
238 | const char *propname, u64 *out_value); | |
0e373639 | 239 | |
aac285c6 JI |
240 | extern int of_property_read_string(struct device_node *np, |
241 | const char *propname, | |
242 | const char **out_string); | |
4fcd15a0 BC |
243 | extern int of_property_read_string_index(struct device_node *np, |
244 | const char *propname, | |
245 | int index, const char **output); | |
7aff0fe3 GL |
246 | extern int of_property_match_string(struct device_node *np, |
247 | const char *propname, | |
248 | const char *string); | |
4fcd15a0 BC |
249 | extern int of_property_count_strings(struct device_node *np, |
250 | const char *propname); | |
76c1ce78 SR |
251 | extern int of_device_is_compatible(const struct device_node *device, |
252 | const char *); | |
834d97d4 | 253 | extern int of_device_is_available(const struct device_node *device); |
76c1ce78 SR |
254 | extern const void *of_get_property(const struct device_node *node, |
255 | const char *name, | |
256 | int *lenp); | |
183912d3 | 257 | extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread); |
8af0da93 DA |
258 | #define for_each_property_of_node(dn, pp) \ |
259 | for (pp = dn->properties; pp != NULL; pp = pp->next) | |
611cad72 | 260 | |
76c1ce78 SR |
261 | extern int of_n_addr_cells(struct device_node *np); |
262 | extern int of_n_size_cells(struct device_node *np); | |
283029d1 GL |
263 | extern const struct of_device_id *of_match_node( |
264 | const struct of_device_id *matches, const struct device_node *node); | |
3f07af49 | 265 | extern int of_modalias_node(struct device_node *node, char *modalias, int len); |
624cfca5 | 266 | extern void of_print_phandle_args(const char *msg, const struct of_phandle_args *args); |
b8fbdc42 | 267 | extern struct device_node *of_parse_phandle(const struct device_node *np, |
739649c5 GL |
268 | const char *phandle_name, |
269 | int index); | |
93c667ca | 270 | extern int of_parse_phandle_with_args(const struct device_node *np, |
64b60e09 | 271 | const char *list_name, const char *cells_name, int index, |
15c9a0ac | 272 | struct of_phandle_args *out_args); |
035fd948 SW |
273 | extern int of_parse_phandle_with_fixed_args(const struct device_node *np, |
274 | const char *list_name, int cells_count, int index, | |
275 | struct of_phandle_args *out_args); | |
bd69f73f GL |
276 | extern int of_count_phandle_with_args(const struct device_node *np, |
277 | const char *list_name, const char *cells_name); | |
76c1ce78 | 278 | |
611cad72 SG |
279 | extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align)); |
280 | extern int of_alias_get_id(struct device_node *np, const char *stem); | |
281 | ||
21b082ec GL |
282 | extern int of_machine_is_compatible(const char *compat); |
283 | ||
79d1c712 NF |
284 | extern int of_add_property(struct device_node *np, struct property *prop); |
285 | extern int of_remove_property(struct device_node *np, struct property *prop); | |
286 | extern int of_update_property(struct device_node *np, struct property *newprop); | |
21b082ec | 287 | |
fcdeb7fe | 288 | /* For updating the device tree at runtime */ |
1cf3d8b3 NF |
289 | #define OF_RECONFIG_ATTACH_NODE 0x0001 |
290 | #define OF_RECONFIG_DETACH_NODE 0x0002 | |
291 | #define OF_RECONFIG_ADD_PROPERTY 0x0003 | |
292 | #define OF_RECONFIG_REMOVE_PROPERTY 0x0004 | |
293 | #define OF_RECONFIG_UPDATE_PROPERTY 0x0005 | |
294 | ||
295 | struct of_prop_reconfig { | |
296 | struct device_node *dn; | |
297 | struct property *prop; | |
298 | }; | |
299 | ||
300 | extern int of_reconfig_notifier_register(struct notifier_block *); | |
301 | extern int of_reconfig_notifier_unregister(struct notifier_block *); | |
302 | extern int of_reconfig_notify(unsigned long, void *); | |
303 | ||
304 | extern int of_attach_node(struct device_node *); | |
305 | extern int of_detach_node(struct device_node *); | |
fcdeb7fe | 306 | |
3a1e362e | 307 | #define of_match_ptr(_ptr) (_ptr) |
c541adc6 SW |
308 | |
309 | /* | |
310 | * struct property *prop; | |
311 | * const __be32 *p; | |
312 | * u32 u; | |
313 | * | |
314 | * of_property_for_each_u32(np, "propname", prop, p, u) | |
315 | * printk("U32 value: %x\n", u); | |
316 | */ | |
317 | const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur, | |
318 | u32 *pu); | |
c541adc6 SW |
319 | /* |
320 | * struct property *prop; | |
321 | * const char *s; | |
322 | * | |
323 | * of_property_for_each_string(np, "propname", prop, s) | |
324 | * printk("String value: %s\n", s); | |
325 | */ | |
326 | const char *of_prop_next_string(struct property *prop, const char *cur); | |
c541adc6 | 327 | |
5c19e952 SH |
328 | int of_device_is_stdout_path(struct device_node *dn); |
329 | ||
b98c0239 | 330 | #else /* CONFIG_OF */ |
3bcbaf6e | 331 | |
74a7f084 GL |
332 | static inline const char* of_node_full_name(struct device_node *np) |
333 | { | |
334 | return "<no-node>"; | |
335 | } | |
336 | ||
1cc44f43 PU |
337 | static inline struct device_node *of_find_node_by_name(struct device_node *from, |
338 | const char *name) | |
339 | { | |
340 | return NULL; | |
341 | } | |
342 | ||
662372e4 RH |
343 | static inline struct device_node *of_find_node_by_type(struct device_node *from, |
344 | const char *type) | |
066ec1dd AS |
345 | { |
346 | return NULL; | |
347 | } | |
348 | ||
662372e4 RH |
349 | static inline struct device_node *of_find_matching_node_and_match( |
350 | struct device_node *from, | |
351 | const struct of_device_id *matches, | |
352 | const struct of_device_id **match) | |
3bcbaf6e | 353 | { |
662372e4 | 354 | return NULL; |
3bcbaf6e SAS |
355 | } |
356 | ||
662372e4 | 357 | static inline struct device_node *of_get_parent(const struct device_node *node) |
00b2c76a | 358 | { |
662372e4 | 359 | return NULL; |
00b2c76a DH |
360 | } |
361 | ||
662372e4 RH |
362 | static inline struct device_node *of_get_next_child( |
363 | const struct device_node *node, struct device_node *prev) | |
364 | { | |
365 | return NULL; | |
366 | } | |
aba3dfff | 367 | |
662372e4 RH |
368 | static inline struct device_node *of_get_next_available_child( |
369 | const struct device_node *node, struct device_node *prev) | |
370 | { | |
371 | return NULL; | |
372 | } | |
f6f0747e | 373 | |
662372e4 RH |
374 | static inline struct device_node *of_find_node_with_property( |
375 | struct device_node *from, const char *prop_name) | |
25c040c9 OJ |
376 | { |
377 | return NULL; | |
378 | } | |
379 | ||
662372e4 | 380 | static inline bool of_have_populated_dt(void) |
183f1d0c | 381 | { |
662372e4 | 382 | return false; |
183f1d0c DA |
383 | } |
384 | ||
662372e4 RH |
385 | static inline struct device_node *of_get_child_by_name( |
386 | const struct device_node *node, | |
387 | const char *name) | |
954e04b9 | 388 | { |
662372e4 | 389 | return NULL; |
954e04b9 BW |
390 | } |
391 | ||
36a0904e RN |
392 | static inline int of_device_is_compatible(const struct device_node *device, |
393 | const char *name) | |
394 | { | |
395 | return 0; | |
396 | } | |
397 | ||
d7195696 RH |
398 | static inline int of_device_is_available(const struct device_node *device) |
399 | { | |
400 | return 0; | |
401 | } | |
402 | ||
aba3dfff SW |
403 | static inline struct property *of_find_property(const struct device_node *np, |
404 | const char *name, | |
405 | int *lenp) | |
406 | { | |
407 | return NULL; | |
408 | } | |
409 | ||
2261cc62 SG |
410 | static inline struct device_node *of_find_compatible_node( |
411 | struct device_node *from, | |
412 | const char *type, | |
413 | const char *compat) | |
414 | { | |
415 | return NULL; | |
416 | } | |
417 | ||
3daf3726 TP |
418 | static inline int of_property_read_u32_index(const struct device_node *np, |
419 | const char *propname, u32 index, u32 *out_value) | |
420 | { | |
421 | return -ENOSYS; | |
422 | } | |
423 | ||
be193249 VK |
424 | static inline int of_property_read_u8_array(const struct device_node *np, |
425 | const char *propname, u8 *out_values, size_t sz) | |
426 | { | |
427 | return -ENOSYS; | |
428 | } | |
429 | ||
430 | static inline int of_property_read_u16_array(const struct device_node *np, | |
431 | const char *propname, u16 *out_values, size_t sz) | |
432 | { | |
433 | return -ENOSYS; | |
434 | } | |
435 | ||
b98c0239 | 436 | static inline int of_property_read_u32_array(const struct device_node *np, |
aac285c6 JI |
437 | const char *propname, |
438 | u32 *out_values, size_t sz) | |
b98c0239 SG |
439 | { |
440 | return -ENOSYS; | |
441 | } | |
442 | ||
443 | static inline int of_property_read_string(struct device_node *np, | |
aac285c6 JI |
444 | const char *propname, |
445 | const char **out_string) | |
b98c0239 SG |
446 | { |
447 | return -ENOSYS; | |
448 | } | |
449 | ||
4fcd15a0 BC |
450 | static inline int of_property_read_string_index(struct device_node *np, |
451 | const char *propname, int index, | |
452 | const char **out_string) | |
453 | { | |
454 | return -ENOSYS; | |
455 | } | |
456 | ||
457 | static inline int of_property_count_strings(struct device_node *np, | |
458 | const char *propname) | |
459 | { | |
460 | return -ENOSYS; | |
461 | } | |
462 | ||
89272b8c SW |
463 | static inline const void *of_get_property(const struct device_node *node, |
464 | const char *name, | |
465 | int *lenp) | |
466 | { | |
467 | return NULL; | |
468 | } | |
469 | ||
183912d3 SK |
470 | static inline struct device_node *of_get_cpu_node(int cpu, |
471 | unsigned int *thread) | |
472 | { | |
473 | return NULL; | |
474 | } | |
475 | ||
4cd7f7a3 JI |
476 | static inline int of_property_read_u64(const struct device_node *np, |
477 | const char *propname, u64 *out_value) | |
478 | { | |
479 | return -ENOSYS; | |
480 | } | |
481 | ||
bd3d5500 TR |
482 | static inline int of_property_match_string(struct device_node *np, |
483 | const char *propname, | |
484 | const char *string) | |
485 | { | |
486 | return -ENOSYS; | |
487 | } | |
488 | ||
b8fbdc42 | 489 | static inline struct device_node *of_parse_phandle(const struct device_node *np, |
36a0904e RN |
490 | const char *phandle_name, |
491 | int index) | |
492 | { | |
493 | return NULL; | |
494 | } | |
495 | ||
e05e5070 TR |
496 | static inline int of_parse_phandle_with_args(struct device_node *np, |
497 | const char *list_name, | |
498 | const char *cells_name, | |
499 | int index, | |
500 | struct of_phandle_args *out_args) | |
501 | { | |
502 | return -ENOSYS; | |
503 | } | |
504 | ||
035fd948 SW |
505 | static inline int of_parse_phandle_with_fixed_args(const struct device_node *np, |
506 | const char *list_name, int cells_count, int index, | |
507 | struct of_phandle_args *out_args) | |
508 | { | |
509 | return -ENOSYS; | |
510 | } | |
511 | ||
bd69f73f GL |
512 | static inline int of_count_phandle_with_args(struct device_node *np, |
513 | const char *list_name, | |
514 | const char *cells_name) | |
515 | { | |
516 | return -ENOSYS; | |
517 | } | |
518 | ||
ed5f886d NF |
519 | static inline int of_alias_get_id(struct device_node *np, const char *stem) |
520 | { | |
521 | return -ENOSYS; | |
522 | } | |
523 | ||
50e07f88 SW |
524 | static inline int of_machine_is_compatible(const char *compat) |
525 | { | |
526 | return 0; | |
527 | } | |
528 | ||
5c19e952 SH |
529 | static inline int of_device_is_stdout_path(struct device_node *dn) |
530 | { | |
531 | return 0; | |
532 | } | |
533 | ||
2adfffa2 SAS |
534 | static inline const __be32 *of_prop_next_u32(struct property *prop, |
535 | const __be32 *cur, u32 *pu) | |
536 | { | |
537 | return NULL; | |
538 | } | |
539 | ||
540 | static inline const char *of_prop_next_string(struct property *prop, | |
541 | const char *cur) | |
542 | { | |
543 | return NULL; | |
544 | } | |
545 | ||
3a1e362e | 546 | #define of_match_ptr(_ptr) NULL |
5762c205 | 547 | #define of_match_node(_matches, _node) NULL |
9dfbf207 | 548 | #endif /* CONFIG_OF */ |
b98c0239 | 549 | |
0c3f061c RH |
550 | #if defined(CONFIG_OF) && defined(CONFIG_NUMA) |
551 | extern int of_node_to_nid(struct device_node *np); | |
552 | #else | |
553 | static inline int of_node_to_nid(struct device_node *device) { return 0; } | |
5ca4db61 PM |
554 | #endif |
555 | ||
662372e4 RH |
556 | static inline struct device_node *of_find_matching_node( |
557 | struct device_node *from, | |
558 | const struct of_device_id *matches) | |
559 | { | |
560 | return of_find_matching_node_and_match(from, matches, NULL); | |
561 | } | |
562 | ||
fa4d34cc JCPV |
563 | /** |
564 | * of_property_read_bool - Findfrom a property | |
565 | * @np: device node from which the property value is to be read. | |
566 | * @propname: name of the property to be searched. | |
567 | * | |
568 | * Search for a property in a device node. | |
569 | * Returns true if the property exist false otherwise. | |
570 | */ | |
571 | static inline bool of_property_read_bool(const struct device_node *np, | |
572 | const char *propname) | |
573 | { | |
574 | struct property *prop = of_find_property(np, propname, NULL); | |
575 | ||
576 | return prop ? true : false; | |
577 | } | |
578 | ||
be193249 VK |
579 | static inline int of_property_read_u8(const struct device_node *np, |
580 | const char *propname, | |
581 | u8 *out_value) | |
582 | { | |
583 | return of_property_read_u8_array(np, propname, out_value, 1); | |
584 | } | |
585 | ||
586 | static inline int of_property_read_u16(const struct device_node *np, | |
587 | const char *propname, | |
588 | u16 *out_value) | |
589 | { | |
590 | return of_property_read_u16_array(np, propname, out_value, 1); | |
591 | } | |
592 | ||
b98c0239 | 593 | static inline int of_property_read_u32(const struct device_node *np, |
aac285c6 | 594 | const char *propname, |
b98c0239 SG |
595 | u32 *out_value) |
596 | { | |
597 | return of_property_read_u32_array(np, propname, out_value, 1); | |
598 | } | |
599 | ||
2adfffa2 SAS |
600 | #define of_property_for_each_u32(np, propname, prop, p, u) \ |
601 | for (prop = of_find_property(np, propname, NULL), \ | |
602 | p = of_prop_next_u32(prop, NULL, &u); \ | |
603 | p; \ | |
604 | p = of_prop_next_u32(prop, p, &u)) | |
605 | ||
606 | #define of_property_for_each_string(np, propname, prop, s) \ | |
607 | for (prop = of_find_property(np, propname, NULL), \ | |
608 | s = of_prop_next_string(prop, NULL); \ | |
609 | s; \ | |
610 | s = of_prop_next_string(prop, s)) | |
611 | ||
662372e4 RH |
612 | #define for_each_node_by_name(dn, name) \ |
613 | for (dn = of_find_node_by_name(NULL, name); dn; \ | |
614 | dn = of_find_node_by_name(dn, name)) | |
615 | #define for_each_node_by_type(dn, type) \ | |
616 | for (dn = of_find_node_by_type(NULL, type); dn; \ | |
617 | dn = of_find_node_by_type(dn, type)) | |
618 | #define for_each_compatible_node(dn, type, compatible) \ | |
619 | for (dn = of_find_compatible_node(NULL, type, compatible); dn; \ | |
620 | dn = of_find_compatible_node(dn, type, compatible)) | |
621 | #define for_each_matching_node(dn, matches) \ | |
622 | for (dn = of_find_matching_node(NULL, matches); dn; \ | |
623 | dn = of_find_matching_node(dn, matches)) | |
624 | #define for_each_matching_node_and_match(dn, matches, match) \ | |
625 | for (dn = of_find_matching_node_and_match(NULL, matches, match); \ | |
626 | dn; dn = of_find_matching_node_and_match(dn, matches, match)) | |
627 | ||
628 | #define for_each_child_of_node(parent, child) \ | |
629 | for (child = of_get_next_child(parent, NULL); child != NULL; \ | |
630 | child = of_get_next_child(parent, child)) | |
631 | #define for_each_available_child_of_node(parent, child) \ | |
632 | for (child = of_get_next_available_child(parent, NULL); child != NULL; \ | |
633 | child = of_get_next_available_child(parent, child)) | |
634 | ||
635 | #define for_each_node_with_property(dn, prop_name) \ | |
636 | for (dn = of_find_node_with_property(NULL, prop_name); dn; \ | |
637 | dn = of_find_node_with_property(dn, prop_name)) | |
638 | ||
639 | static inline int of_get_child_count(const struct device_node *np) | |
640 | { | |
641 | struct device_node *child; | |
642 | int num = 0; | |
643 | ||
644 | for_each_child_of_node(np, child) | |
645 | num++; | |
646 | ||
647 | return num; | |
648 | } | |
649 | ||
650 | static inline int of_get_available_child_count(const struct device_node *np) | |
651 | { | |
652 | struct device_node *child; | |
653 | int num = 0; | |
654 | ||
655 | for_each_available_child_of_node(np, child) | |
656 | num++; | |
657 | ||
658 | return num; | |
659 | } | |
660 | ||
34db8aaf DH |
661 | #if defined(CONFIG_PROC_FS) && defined(CONFIG_PROC_DEVICETREE) |
662 | extern void proc_device_tree_add_node(struct device_node *, struct proc_dir_entry *); | |
663 | extern void proc_device_tree_add_prop(struct proc_dir_entry *pde, struct property *prop); | |
664 | extern void proc_device_tree_remove_prop(struct proc_dir_entry *pde, | |
665 | struct property *prop); | |
666 | extern void proc_device_tree_update_prop(struct proc_dir_entry *pde, | |
667 | struct property *newprop, | |
668 | struct property *oldprop); | |
669 | #endif | |
670 | ||
76c1ce78 | 671 | #endif /* _LINUX_OF_H */ |