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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> |
6f192492 | 21 | #include <linux/kref.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; | |
40 | }; | |
41 | ||
6f192492 GL |
42 | #if defined(CONFIG_SPARC) |
43 | struct of_irq_controller; | |
44 | #endif | |
45 | ||
46 | struct device_node { | |
47 | const char *name; | |
48 | const char *type; | |
6016a363 | 49 | phandle phandle; |
c22618a1 | 50 | const char *full_name; |
6f192492 GL |
51 | |
52 | struct property *properties; | |
53 | struct property *deadprops; /* removed properties */ | |
54 | struct device_node *parent; | |
55 | struct device_node *child; | |
56 | struct device_node *sibling; | |
57 | struct device_node *next; /* next device of same type */ | |
58 | struct device_node *allnext; /* next in list of all nodes */ | |
59 | struct proc_dir_entry *pde; /* this node's proc directory */ | |
60 | struct kref kref; | |
61 | unsigned long _flags; | |
62 | void *data; | |
63 | #if defined(CONFIG_SPARC) | |
c22618a1 | 64 | const char *path_component_name; |
6f192492 GL |
65 | unsigned int unique_id; |
66 | struct of_irq_controller *irq_trans; | |
67 | #endif | |
68 | }; | |
69 | ||
15c9a0ac GL |
70 | #define MAX_PHANDLE_ARGS 8 |
71 | struct of_phandle_args { | |
72 | struct device_node *np; | |
73 | int args_count; | |
74 | uint32_t args[MAX_PHANDLE_ARGS]; | |
75 | }; | |
76 | ||
0f22dd39 GL |
77 | #ifdef CONFIG_OF_DYNAMIC |
78 | extern struct device_node *of_node_get(struct device_node *node); | |
79 | extern void of_node_put(struct device_node *node); | |
80 | #else /* CONFIG_OF_DYNAMIC */ | |
3ecdd051 RH |
81 | /* Dummy ref counting routines - to be implemented later */ |
82 | static inline struct device_node *of_node_get(struct device_node *node) | |
83 | { | |
84 | return node; | |
85 | } | |
0f22dd39 GL |
86 | static inline void of_node_put(struct device_node *node) { } |
87 | #endif /* !CONFIG_OF_DYNAMIC */ | |
3ecdd051 | 88 | |
c9e358df GL |
89 | #ifdef CONFIG_OF |
90 | ||
41f88009 | 91 | /* Pointer for first entry in chain of all nodes. */ |
465aac6d | 92 | extern struct device_node *of_allnodes; |
fc0bdae4 | 93 | extern struct device_node *of_chosen; |
611cad72 | 94 | extern struct device_node *of_aliases; |
d6d3c4e6 | 95 | extern raw_spinlock_t devtree_lock; |
41f88009 | 96 | |
3bcbaf6e SAS |
97 | static inline bool of_have_populated_dt(void) |
98 | { | |
465aac6d | 99 | return of_allnodes != NULL; |
3bcbaf6e SAS |
100 | } |
101 | ||
035ebefc AS |
102 | static inline bool of_node_is_root(const struct device_node *node) |
103 | { | |
104 | return node && (node->parent == NULL); | |
105 | } | |
106 | ||
50436312 GL |
107 | static inline int of_node_check_flag(struct device_node *n, unsigned long flag) |
108 | { | |
109 | return test_bit(flag, &n->_flags); | |
110 | } | |
111 | ||
112 | static inline void of_node_set_flag(struct device_node *n, unsigned long flag) | |
113 | { | |
114 | set_bit(flag, &n->_flags); | |
115 | } | |
116 | ||
e91edcf5 GL |
117 | extern struct device_node *of_find_all_nodes(struct device_node *prev); |
118 | ||
b6caf2ad | 119 | /* |
3d6b8828 | 120 | * OF address retrieval & translation |
b6caf2ad GL |
121 | */ |
122 | ||
123 | /* Helper to read a big number; size is in cells (not bytes) */ | |
2e89e685 | 124 | static inline u64 of_read_number(const __be32 *cell, int size) |
b6caf2ad GL |
125 | { |
126 | u64 r = 0; | |
127 | while (size--) | |
2e89e685 | 128 | r = (r << 32) | be32_to_cpu(*(cell++)); |
b6caf2ad GL |
129 | return r; |
130 | } | |
131 | ||
132 | /* Like of_read_number, but we want an unsigned long result */ | |
2e89e685 | 133 | static inline unsigned long of_read_ulong(const __be32 *cell, int size) |
b6caf2ad | 134 | { |
2be09cb9 GL |
135 | /* toss away upper bits if unsigned long is smaller than u64 */ |
136 | return of_read_number(cell, size); | |
b6caf2ad | 137 | } |
b6caf2ad | 138 | |
b5b4bb3f | 139 | #if defined(CONFIG_SPARC) |
76c1ce78 | 140 | #include <asm/prom.h> |
b5b4bb3f | 141 | #endif |
76c1ce78 | 142 | |
7c7b60cb GL |
143 | /* Default #address and #size cells. Allow arch asm/prom.h to override */ |
144 | #if !defined(OF_ROOT_NODE_ADDR_CELLS_DEFAULT) | |
145 | #define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1 | |
146 | #define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1 | |
147 | #endif | |
148 | ||
149 | /* Default string compare functions, Allow arch asm/prom.h to override */ | |
150 | #if !defined(of_compat_cmp) | |
1976152f | 151 | #define of_compat_cmp(s1, s2, l) strcasecmp((s1), (s2)) |
7c7b60cb GL |
152 | #define of_prop_cmp(s1, s2) strcmp((s1), (s2)) |
153 | #define of_node_cmp(s1, s2) strcasecmp((s1), (s2)) | |
154 | #endif | |
155 | ||
76c1ce78 SR |
156 | /* flag descriptions */ |
157 | #define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */ | |
158 | #define OF_DETACHED 2 /* node has been detached from the device tree */ | |
159 | ||
61e955db GL |
160 | #define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags) |
161 | #define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags) | |
162 | ||
76c1ce78 SR |
163 | #define OF_BAD_ADDR ((u64)-1) |
164 | ||
c0a05bf0 | 165 | static inline const char *of_node_full_name(const struct device_node *np) |
74a7f084 GL |
166 | { |
167 | return np ? np->full_name : "<no-node>"; | |
168 | } | |
169 | ||
76c1ce78 SR |
170 | extern struct device_node *of_find_node_by_name(struct device_node *from, |
171 | const char *name); | |
172 | #define for_each_node_by_name(dn, name) \ | |
173 | for (dn = of_find_node_by_name(NULL, name); dn; \ | |
174 | dn = of_find_node_by_name(dn, name)) | |
175 | extern struct device_node *of_find_node_by_type(struct device_node *from, | |
176 | const char *type); | |
177 | #define for_each_node_by_type(dn, type) \ | |
178 | for (dn = of_find_node_by_type(NULL, type); dn; \ | |
179 | dn = of_find_node_by_type(dn, type)) | |
180 | extern struct device_node *of_find_compatible_node(struct device_node *from, | |
181 | const char *type, const char *compat); | |
182 | #define for_each_compatible_node(dn, type, compatible) \ | |
183 | for (dn = of_find_compatible_node(NULL, type, compatible); dn; \ | |
184 | dn = of_find_compatible_node(dn, type, compatible)) | |
50c8af4c SW |
185 | extern struct device_node *of_find_matching_node_and_match( |
186 | struct device_node *from, | |
187 | const struct of_device_id *matches, | |
188 | const struct of_device_id **match); | |
189 | static inline struct device_node *of_find_matching_node( | |
190 | struct device_node *from, | |
191 | const struct of_device_id *matches) | |
192 | { | |
193 | return of_find_matching_node_and_match(from, matches, NULL); | |
194 | } | |
283029d1 GL |
195 | #define for_each_matching_node(dn, matches) \ |
196 | for (dn = of_find_matching_node(NULL, matches); dn; \ | |
197 | dn = of_find_matching_node(dn, matches)) | |
50c8af4c SW |
198 | #define for_each_matching_node_and_match(dn, matches, match) \ |
199 | for (dn = of_find_matching_node_and_match(NULL, matches, match); \ | |
200 | dn; dn = of_find_matching_node_and_match(dn, matches, match)) | |
76c1ce78 SR |
201 | extern struct device_node *of_find_node_by_path(const char *path); |
202 | extern struct device_node *of_find_node_by_phandle(phandle handle); | |
203 | extern struct device_node *of_get_parent(const struct device_node *node); | |
f4eb0107 | 204 | extern struct device_node *of_get_next_parent(struct device_node *node); |
76c1ce78 SR |
205 | extern struct device_node *of_get_next_child(const struct device_node *node, |
206 | struct device_node *prev); | |
3296193d TT |
207 | extern struct device_node *of_get_next_available_child( |
208 | const struct device_node *node, struct device_node *prev); | |
209 | ||
9c19761a SK |
210 | extern struct device_node *of_get_child_by_name(const struct device_node *node, |
211 | const char *name); | |
aabc08dc ME |
212 | #define for_each_child_of_node(parent, child) \ |
213 | for (child = of_get_next_child(parent, NULL); child != NULL; \ | |
214 | child = of_get_next_child(parent, child)) | |
215 | ||
3296193d TT |
216 | #define for_each_available_child_of_node(parent, child) \ |
217 | for (child = of_get_next_available_child(parent, NULL); child != NULL; \ | |
218 | child = of_get_next_available_child(parent, child)) | |
219 | ||
183f1d0c DA |
220 | static inline int of_get_child_count(const struct device_node *np) |
221 | { | |
222 | struct device_node *child; | |
223 | int num = 0; | |
224 | ||
225 | for_each_child_of_node(np, child) | |
226 | num++; | |
227 | ||
228 | return num; | |
229 | } | |
230 | ||
954e04b9 BW |
231 | static inline int of_get_available_child_count(const struct device_node *np) |
232 | { | |
233 | struct device_node *child; | |
234 | int num = 0; | |
235 | ||
236 | for_each_available_child_of_node(np, child) | |
237 | num++; | |
238 | ||
239 | return num; | |
240 | } | |
241 | ||
a3e31b45 SH |
242 | /* cache lookup */ |
243 | extern struct device_node *of_find_next_cache_node(const struct device_node *); | |
1e291b14 ME |
244 | extern struct device_node *of_find_node_with_property( |
245 | struct device_node *from, const char *prop_name); | |
246 | #define for_each_node_with_property(dn, prop_name) \ | |
247 | for (dn = of_find_node_with_property(NULL, prop_name); dn; \ | |
248 | dn = of_find_node_with_property(dn, prop_name)) | |
249 | ||
76c1ce78 SR |
250 | extern struct property *of_find_property(const struct device_node *np, |
251 | const char *name, | |
252 | int *lenp); | |
3daf3726 TP |
253 | extern int of_property_read_u32_index(const struct device_node *np, |
254 | const char *propname, | |
255 | u32 index, u32 *out_value); | |
be193249 VK |
256 | extern int of_property_read_u8_array(const struct device_node *np, |
257 | const char *propname, u8 *out_values, size_t sz); | |
258 | extern int of_property_read_u16_array(const struct device_node *np, | |
259 | const char *propname, u16 *out_values, size_t sz); | |
0e373639 | 260 | extern int of_property_read_u32_array(const struct device_node *np, |
aac285c6 | 261 | const char *propname, |
0e373639 RH |
262 | u32 *out_values, |
263 | size_t sz); | |
4cd7f7a3 JI |
264 | extern int of_property_read_u64(const struct device_node *np, |
265 | const char *propname, u64 *out_value); | |
0e373639 | 266 | |
aac285c6 JI |
267 | extern int of_property_read_string(struct device_node *np, |
268 | const char *propname, | |
269 | const char **out_string); | |
4fcd15a0 BC |
270 | extern int of_property_read_string_index(struct device_node *np, |
271 | const char *propname, | |
272 | int index, const char **output); | |
7aff0fe3 GL |
273 | extern int of_property_match_string(struct device_node *np, |
274 | const char *propname, | |
275 | const char *string); | |
4fcd15a0 BC |
276 | extern int of_property_count_strings(struct device_node *np, |
277 | const char *propname); | |
76c1ce78 SR |
278 | extern int of_device_is_compatible(const struct device_node *device, |
279 | const char *); | |
834d97d4 | 280 | extern int of_device_is_available(const struct device_node *device); |
76c1ce78 SR |
281 | extern const void *of_get_property(const struct device_node *node, |
282 | const char *name, | |
283 | int *lenp); | |
183912d3 | 284 | extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread); |
8af0da93 DA |
285 | #define for_each_property_of_node(dn, pp) \ |
286 | for (pp = dn->properties; pp != NULL; pp = pp->next) | |
611cad72 | 287 | |
76c1ce78 SR |
288 | extern int of_n_addr_cells(struct device_node *np); |
289 | extern int of_n_size_cells(struct device_node *np); | |
283029d1 GL |
290 | extern const struct of_device_id *of_match_node( |
291 | const struct of_device_id *matches, const struct device_node *node); | |
3f07af49 | 292 | extern int of_modalias_node(struct device_node *node, char *modalias, int len); |
624cfca5 | 293 | extern void of_print_phandle_args(const char *msg, const struct of_phandle_args *args); |
b8fbdc42 | 294 | extern struct device_node *of_parse_phandle(const struct device_node *np, |
739649c5 GL |
295 | const char *phandle_name, |
296 | int index); | |
93c667ca | 297 | extern int of_parse_phandle_with_args(const struct device_node *np, |
64b60e09 | 298 | const char *list_name, const char *cells_name, int index, |
15c9a0ac | 299 | struct of_phandle_args *out_args); |
035fd948 SW |
300 | extern int of_parse_phandle_with_fixed_args(const struct device_node *np, |
301 | const char *list_name, int cells_count, int index, | |
302 | struct of_phandle_args *out_args); | |
bd69f73f GL |
303 | extern int of_count_phandle_with_args(const struct device_node *np, |
304 | const char *list_name, const char *cells_name); | |
76c1ce78 | 305 | |
611cad72 SG |
306 | extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align)); |
307 | extern int of_alias_get_id(struct device_node *np, const char *stem); | |
308 | ||
21b082ec GL |
309 | extern int of_machine_is_compatible(const char *compat); |
310 | ||
79d1c712 NF |
311 | extern int of_add_property(struct device_node *np, struct property *prop); |
312 | extern int of_remove_property(struct device_node *np, struct property *prop); | |
313 | extern int of_update_property(struct device_node *np, struct property *newprop); | |
21b082ec | 314 | |
fcdeb7fe | 315 | /* For updating the device tree at runtime */ |
1cf3d8b3 NF |
316 | #define OF_RECONFIG_ATTACH_NODE 0x0001 |
317 | #define OF_RECONFIG_DETACH_NODE 0x0002 | |
318 | #define OF_RECONFIG_ADD_PROPERTY 0x0003 | |
319 | #define OF_RECONFIG_REMOVE_PROPERTY 0x0004 | |
320 | #define OF_RECONFIG_UPDATE_PROPERTY 0x0005 | |
321 | ||
322 | struct of_prop_reconfig { | |
323 | struct device_node *dn; | |
324 | struct property *prop; | |
325 | }; | |
326 | ||
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 | ||
331 | extern int of_attach_node(struct device_node *); | |
332 | extern int of_detach_node(struct device_node *); | |
fcdeb7fe | 333 | |
3a1e362e | 334 | #define of_match_ptr(_ptr) (_ptr) |
c541adc6 SW |
335 | |
336 | /* | |
337 | * struct property *prop; | |
338 | * const __be32 *p; | |
339 | * u32 u; | |
340 | * | |
341 | * of_property_for_each_u32(np, "propname", prop, p, u) | |
342 | * printk("U32 value: %x\n", u); | |
343 | */ | |
344 | const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur, | |
345 | u32 *pu); | |
c541adc6 SW |
346 | /* |
347 | * struct property *prop; | |
348 | * const char *s; | |
349 | * | |
350 | * of_property_for_each_string(np, "propname", prop, s) | |
351 | * printk("String value: %s\n", s); | |
352 | */ | |
353 | const char *of_prop_next_string(struct property *prop, const char *cur); | |
c541adc6 | 354 | |
5c19e952 SH |
355 | int of_device_is_stdout_path(struct device_node *dn); |
356 | ||
b98c0239 | 357 | #else /* CONFIG_OF */ |
3bcbaf6e | 358 | |
74a7f084 GL |
359 | static inline const char* of_node_full_name(struct device_node *np) |
360 | { | |
361 | return "<no-node>"; | |
362 | } | |
363 | ||
1cc44f43 PU |
364 | static inline struct device_node *of_find_node_by_name(struct device_node *from, |
365 | const char *name) | |
366 | { | |
367 | return NULL; | |
368 | } | |
369 | ||
066ec1dd AS |
370 | static inline struct device_node *of_get_parent(const struct device_node *node) |
371 | { | |
372 | return NULL; | |
373 | } | |
374 | ||
3bcbaf6e SAS |
375 | static inline bool of_have_populated_dt(void) |
376 | { | |
377 | return false; | |
378 | } | |
379 | ||
00b2c76a DH |
380 | /* Kill an unused variable warning on a device_node pointer */ |
381 | static inline void __of_use_dn(const struct device_node *np) | |
382 | { | |
383 | } | |
384 | ||
aba3dfff | 385 | #define for_each_child_of_node(parent, child) \ |
00b2c76a | 386 | while (__of_use_dn(parent), __of_use_dn(child), 0) |
aba3dfff | 387 | |
f6f0747e SN |
388 | #define for_each_available_child_of_node(parent, child) \ |
389 | while (0) | |
390 | ||
25c040c9 OJ |
391 | static inline struct device_node *of_get_child_by_name( |
392 | const struct device_node *node, | |
393 | const char *name) | |
394 | { | |
395 | return NULL; | |
396 | } | |
397 | ||
183f1d0c DA |
398 | static inline int of_get_child_count(const struct device_node *np) |
399 | { | |
400 | return 0; | |
401 | } | |
402 | ||
954e04b9 BW |
403 | static inline int of_get_available_child_count(const struct device_node *np) |
404 | { | |
405 | return 0; | |
406 | } | |
407 | ||
36a0904e RN |
408 | static inline int of_device_is_compatible(const struct device_node *device, |
409 | const char *name) | |
410 | { | |
411 | return 0; | |
412 | } | |
413 | ||
d7195696 RH |
414 | static inline int of_device_is_available(const struct device_node *device) |
415 | { | |
416 | return 0; | |
417 | } | |
418 | ||
aba3dfff SW |
419 | static inline struct property *of_find_property(const struct device_node *np, |
420 | const char *name, | |
421 | int *lenp) | |
422 | { | |
423 | return NULL; | |
424 | } | |
425 | ||
2261cc62 SG |
426 | static inline struct device_node *of_find_compatible_node( |
427 | struct device_node *from, | |
428 | const char *type, | |
429 | const char *compat) | |
430 | { | |
431 | return NULL; | |
432 | } | |
433 | ||
3daf3726 TP |
434 | static inline int of_property_read_u32_index(const struct device_node *np, |
435 | const char *propname, u32 index, u32 *out_value) | |
436 | { | |
437 | return -ENOSYS; | |
438 | } | |
439 | ||
be193249 VK |
440 | static inline int of_property_read_u8_array(const struct device_node *np, |
441 | const char *propname, u8 *out_values, size_t sz) | |
442 | { | |
443 | return -ENOSYS; | |
444 | } | |
445 | ||
446 | static inline int of_property_read_u16_array(const struct device_node *np, | |
447 | const char *propname, u16 *out_values, size_t sz) | |
448 | { | |
449 | return -ENOSYS; | |
450 | } | |
451 | ||
b98c0239 | 452 | static inline int of_property_read_u32_array(const struct device_node *np, |
aac285c6 JI |
453 | const char *propname, |
454 | u32 *out_values, size_t sz) | |
b98c0239 SG |
455 | { |
456 | return -ENOSYS; | |
457 | } | |
458 | ||
459 | static inline int of_property_read_string(struct device_node *np, | |
aac285c6 JI |
460 | const char *propname, |
461 | const char **out_string) | |
b98c0239 SG |
462 | { |
463 | return -ENOSYS; | |
464 | } | |
465 | ||
4fcd15a0 BC |
466 | static inline int of_property_read_string_index(struct device_node *np, |
467 | const char *propname, int index, | |
468 | const char **out_string) | |
469 | { | |
470 | return -ENOSYS; | |
471 | } | |
472 | ||
473 | static inline int of_property_count_strings(struct device_node *np, | |
474 | const char *propname) | |
475 | { | |
476 | return -ENOSYS; | |
477 | } | |
478 | ||
89272b8c SW |
479 | static inline const void *of_get_property(const struct device_node *node, |
480 | const char *name, | |
481 | int *lenp) | |
482 | { | |
483 | return NULL; | |
484 | } | |
485 | ||
183912d3 SH |
486 | static inline struct device_node *of_get_cpu_node(int cpu, |
487 | unsigned int *thread) | |
488 | { | |
489 | return NULL; | |
490 | } | |
491 | ||
4cd7f7a3 JI |
492 | static inline int of_property_read_u64(const struct device_node *np, |
493 | const char *propname, u64 *out_value) | |
494 | { | |
495 | return -ENOSYS; | |
496 | } | |
497 | ||
bd3d5500 TR |
498 | static inline int of_property_match_string(struct device_node *np, |
499 | const char *propname, | |
500 | const char *string) | |
501 | { | |
502 | return -ENOSYS; | |
503 | } | |
504 | ||
b8fbdc42 | 505 | static inline struct device_node *of_parse_phandle(const struct device_node *np, |
36a0904e RN |
506 | const char *phandle_name, |
507 | int index) | |
508 | { | |
509 | return NULL; | |
510 | } | |
511 | ||
e05e5070 TR |
512 | static inline int of_parse_phandle_with_args(struct device_node *np, |
513 | const char *list_name, | |
514 | const char *cells_name, | |
515 | int index, | |
516 | struct of_phandle_args *out_args) | |
517 | { | |
518 | return -ENOSYS; | |
519 | } | |
520 | ||
035fd948 SW |
521 | static inline int of_parse_phandle_with_fixed_args(const struct device_node *np, |
522 | const char *list_name, int cells_count, int index, | |
523 | struct of_phandle_args *out_args) | |
524 | { | |
525 | return -ENOSYS; | |
526 | } | |
527 | ||
bd69f73f GL |
528 | static inline int of_count_phandle_with_args(struct device_node *np, |
529 | const char *list_name, | |
530 | const char *cells_name) | |
531 | { | |
532 | return -ENOSYS; | |
533 | } | |
534 | ||
ed5f886d NF |
535 | static inline int of_alias_get_id(struct device_node *np, const char *stem) |
536 | { | |
537 | return -ENOSYS; | |
538 | } | |
539 | ||
50e07f88 SW |
540 | static inline int of_machine_is_compatible(const char *compat) |
541 | { | |
542 | return 0; | |
543 | } | |
544 | ||
5c19e952 SH |
545 | static inline int of_device_is_stdout_path(struct device_node *dn) |
546 | { | |
547 | return 0; | |
548 | } | |
549 | ||
2adfffa2 SAS |
550 | static inline const __be32 *of_prop_next_u32(struct property *prop, |
551 | const __be32 *cur, u32 *pu) | |
552 | { | |
553 | return NULL; | |
554 | } | |
555 | ||
556 | static inline const char *of_prop_next_string(struct property *prop, | |
557 | const char *cur) | |
558 | { | |
559 | return NULL; | |
560 | } | |
561 | ||
3a1e362e | 562 | #define of_match_ptr(_ptr) NULL |
5762c205 | 563 | #define of_match_node(_matches, _node) NULL |
9dfbf207 | 564 | #endif /* CONFIG_OF */ |
b98c0239 | 565 | |
0c3f061c RH |
566 | #if defined(CONFIG_OF) && defined(CONFIG_NUMA) |
567 | extern int of_node_to_nid(struct device_node *np); | |
568 | #else | |
569 | static inline int of_node_to_nid(struct device_node *device) { return 0; } | |
5ca4db61 PM |
570 | #endif |
571 | ||
fa4d34cc JCPV |
572 | /** |
573 | * of_property_read_bool - Findfrom a property | |
574 | * @np: device node from which the property value is to be read. | |
575 | * @propname: name of the property to be searched. | |
576 | * | |
577 | * Search for a property in a device node. | |
578 | * Returns true if the property exist false otherwise. | |
579 | */ | |
580 | static inline bool of_property_read_bool(const struct device_node *np, | |
581 | const char *propname) | |
582 | { | |
583 | struct property *prop = of_find_property(np, propname, NULL); | |
584 | ||
585 | return prop ? true : false; | |
586 | } | |
587 | ||
be193249 VK |
588 | static inline int of_property_read_u8(const struct device_node *np, |
589 | const char *propname, | |
590 | u8 *out_value) | |
591 | { | |
592 | return of_property_read_u8_array(np, propname, out_value, 1); | |
593 | } | |
594 | ||
595 | static inline int of_property_read_u16(const struct device_node *np, | |
596 | const char *propname, | |
597 | u16 *out_value) | |
598 | { | |
599 | return of_property_read_u16_array(np, propname, out_value, 1); | |
600 | } | |
601 | ||
b98c0239 | 602 | static inline int of_property_read_u32(const struct device_node *np, |
aac285c6 | 603 | const char *propname, |
b98c0239 SG |
604 | u32 *out_value) |
605 | { | |
606 | return of_property_read_u32_array(np, propname, out_value, 1); | |
607 | } | |
608 | ||
2adfffa2 SAS |
609 | #define of_property_for_each_u32(np, propname, prop, p, u) \ |
610 | for (prop = of_find_property(np, propname, NULL), \ | |
611 | p = of_prop_next_u32(prop, NULL, &u); \ | |
612 | p; \ | |
613 | p = of_prop_next_u32(prop, p, &u)) | |
614 | ||
615 | #define of_property_for_each_string(np, propname, prop, s) \ | |
616 | for (prop = of_find_property(np, propname, NULL), \ | |
617 | s = of_prop_next_string(prop, NULL); \ | |
618 | s; \ | |
619 | s = of_prop_next_string(prop, s)) | |
620 | ||
34db8aaf DH |
621 | #if defined(CONFIG_PROC_FS) && defined(CONFIG_PROC_DEVICETREE) |
622 | extern void proc_device_tree_add_node(struct device_node *, struct proc_dir_entry *); | |
623 | extern void proc_device_tree_add_prop(struct proc_dir_entry *pde, struct property *prop); | |
624 | extern void proc_device_tree_remove_prop(struct proc_dir_entry *pde, | |
625 | struct property *prop); | |
626 | extern void proc_device_tree_update_prop(struct proc_dir_entry *pde, | |
627 | struct property *newprop, | |
628 | struct property *oldprop); | |
629 | #endif | |
630 | ||
76c1ce78 | 631 | #endif /* _LINUX_OF_H */ |