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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 */ | |
75b57ecf | 60 | struct kobject kobj; |
6f192492 GL |
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 | ||
b66548e2 | 70 | #define MAX_PHANDLE_ARGS 16 |
15c9a0ac GL |
71 | struct of_phandle_args { |
72 | struct device_node *np; | |
73 | int args_count; | |
74 | uint32_t args[MAX_PHANDLE_ARGS]; | |
75 | }; | |
76 | ||
0829f6d1 PA |
77 | /* initialize a node */ |
78 | extern struct kobj_type of_node_ktype; | |
79 | static inline void of_node_init(struct device_node *node) | |
80 | { | |
81 | kobject_init(&node->kobj, &of_node_ktype); | |
82 | } | |
83 | ||
84 | /* true when node is initialized */ | |
85 | static inline int of_node_is_initialized(struct device_node *node) | |
86 | { | |
87 | return node && node->kobj.state_initialized; | |
88 | } | |
89 | ||
90 | /* true when node is attached (i.e. present on sysfs) */ | |
91 | static inline int of_node_is_attached(struct device_node *node) | |
92 | { | |
93 | return node && node->kobj.state_in_sysfs; | |
94 | } | |
95 | ||
0f22dd39 GL |
96 | #ifdef CONFIG_OF_DYNAMIC |
97 | extern struct device_node *of_node_get(struct device_node *node); | |
98 | extern void of_node_put(struct device_node *node); | |
99 | #else /* CONFIG_OF_DYNAMIC */ | |
3ecdd051 RH |
100 | /* Dummy ref counting routines - to be implemented later */ |
101 | static inline struct device_node *of_node_get(struct device_node *node) | |
102 | { | |
103 | return node; | |
104 | } | |
0f22dd39 GL |
105 | static inline void of_node_put(struct device_node *node) { } |
106 | #endif /* !CONFIG_OF_DYNAMIC */ | |
3ecdd051 | 107 | |
c9e358df GL |
108 | #ifdef CONFIG_OF |
109 | ||
41f88009 | 110 | /* Pointer for first entry in chain of all nodes. */ |
465aac6d | 111 | extern struct device_node *of_allnodes; |
fc0bdae4 | 112 | extern struct device_node *of_chosen; |
611cad72 | 113 | extern struct device_node *of_aliases; |
d6d3c4e6 | 114 | extern raw_spinlock_t devtree_lock; |
41f88009 | 115 | |
3bcbaf6e SAS |
116 | static inline bool of_have_populated_dt(void) |
117 | { | |
465aac6d | 118 | return of_allnodes != NULL; |
3bcbaf6e SAS |
119 | } |
120 | ||
035ebefc AS |
121 | static inline bool of_node_is_root(const struct device_node *node) |
122 | { | |
123 | return node && (node->parent == NULL); | |
124 | } | |
125 | ||
50436312 GL |
126 | static inline int of_node_check_flag(struct device_node *n, unsigned long flag) |
127 | { | |
128 | return test_bit(flag, &n->_flags); | |
129 | } | |
130 | ||
c6e126de PM |
131 | static inline int of_node_test_and_set_flag(struct device_node *n, |
132 | unsigned long flag) | |
133 | { | |
134 | return test_and_set_bit(flag, &n->_flags); | |
135 | } | |
136 | ||
50436312 GL |
137 | static inline void of_node_set_flag(struct device_node *n, unsigned long flag) |
138 | { | |
139 | set_bit(flag, &n->_flags); | |
140 | } | |
141 | ||
588453c6 PA |
142 | static inline void of_node_clear_flag(struct device_node *n, unsigned long flag) |
143 | { | |
144 | clear_bit(flag, &n->_flags); | |
145 | } | |
146 | ||
147 | static inline int of_property_check_flag(struct property *p, unsigned long flag) | |
148 | { | |
149 | return test_bit(flag, &p->_flags); | |
150 | } | |
151 | ||
152 | static inline void of_property_set_flag(struct property *p, unsigned long flag) | |
153 | { | |
154 | set_bit(flag, &p->_flags); | |
155 | } | |
156 | ||
157 | static inline void of_property_clear_flag(struct property *p, unsigned long flag) | |
158 | { | |
159 | clear_bit(flag, &p->_flags); | |
160 | } | |
161 | ||
e91edcf5 GL |
162 | extern struct device_node *of_find_all_nodes(struct device_node *prev); |
163 | ||
b6caf2ad | 164 | /* |
3d6b8828 | 165 | * OF address retrieval & translation |
b6caf2ad GL |
166 | */ |
167 | ||
168 | /* Helper to read a big number; size is in cells (not bytes) */ | |
2e89e685 | 169 | static inline u64 of_read_number(const __be32 *cell, int size) |
b6caf2ad GL |
170 | { |
171 | u64 r = 0; | |
172 | while (size--) | |
2e89e685 | 173 | r = (r << 32) | be32_to_cpu(*(cell++)); |
b6caf2ad GL |
174 | return r; |
175 | } | |
176 | ||
177 | /* Like of_read_number, but we want an unsigned long result */ | |
2e89e685 | 178 | static inline unsigned long of_read_ulong(const __be32 *cell, int size) |
b6caf2ad | 179 | { |
2be09cb9 GL |
180 | /* toss away upper bits if unsigned long is smaller than u64 */ |
181 | return of_read_number(cell, size); | |
b6caf2ad | 182 | } |
b6caf2ad | 183 | |
b5b4bb3f | 184 | #if defined(CONFIG_SPARC) |
76c1ce78 | 185 | #include <asm/prom.h> |
b5b4bb3f | 186 | #endif |
76c1ce78 | 187 | |
7c7b60cb GL |
188 | /* Default #address and #size cells. Allow arch asm/prom.h to override */ |
189 | #if !defined(OF_ROOT_NODE_ADDR_CELLS_DEFAULT) | |
190 | #define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1 | |
191 | #define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1 | |
192 | #endif | |
193 | ||
194 | /* Default string compare functions, Allow arch asm/prom.h to override */ | |
195 | #if !defined(of_compat_cmp) | |
1976152f | 196 | #define of_compat_cmp(s1, s2, l) strcasecmp((s1), (s2)) |
7c7b60cb GL |
197 | #define of_prop_cmp(s1, s2) strcmp((s1), (s2)) |
198 | #define of_node_cmp(s1, s2) strcasecmp((s1), (s2)) | |
199 | #endif | |
200 | ||
76c1ce78 SR |
201 | /* flag descriptions */ |
202 | #define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */ | |
203 | #define OF_DETACHED 2 /* node has been detached from the device tree */ | |
c6e126de | 204 | #define OF_POPULATED 3 /* device already created for the node */ |
75f353b6 | 205 | #define OF_POPULATED_BUS 4 /* of_platform_populate recursed to children of this node */ |
76c1ce78 | 206 | |
61e955db GL |
207 | #define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags) |
208 | #define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags) | |
209 | ||
76c1ce78 SR |
210 | #define OF_BAD_ADDR ((u64)-1) |
211 | ||
c0a05bf0 | 212 | static inline const char *of_node_full_name(const struct device_node *np) |
74a7f084 GL |
213 | { |
214 | return np ? np->full_name : "<no-node>"; | |
215 | } | |
216 | ||
75b57ecf GL |
217 | #define for_each_of_allnodes(dn) \ |
218 | for (dn = of_allnodes; dn; dn = dn->allnext) | |
76c1ce78 SR |
219 | extern struct device_node *of_find_node_by_name(struct device_node *from, |
220 | const char *name); | |
76c1ce78 SR |
221 | extern struct device_node *of_find_node_by_type(struct device_node *from, |
222 | const char *type); | |
76c1ce78 SR |
223 | extern struct device_node *of_find_compatible_node(struct device_node *from, |
224 | const char *type, const char *compat); | |
50c8af4c SW |
225 | extern struct device_node *of_find_matching_node_and_match( |
226 | struct device_node *from, | |
227 | const struct of_device_id *matches, | |
228 | const struct of_device_id **match); | |
662372e4 | 229 | |
76c1ce78 SR |
230 | extern struct device_node *of_find_node_by_path(const char *path); |
231 | extern struct device_node *of_find_node_by_phandle(phandle handle); | |
232 | extern struct device_node *of_get_parent(const struct device_node *node); | |
f4eb0107 | 233 | extern struct device_node *of_get_next_parent(struct device_node *node); |
76c1ce78 SR |
234 | extern struct device_node *of_get_next_child(const struct device_node *node, |
235 | struct device_node *prev); | |
3296193d TT |
236 | extern struct device_node *of_get_next_available_child( |
237 | const struct device_node *node, struct device_node *prev); | |
238 | ||
9c19761a SK |
239 | extern struct device_node *of_get_child_by_name(const struct device_node *node, |
240 | const char *name); | |
954e04b9 | 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); | |
1e291b14 | 246 | |
76c1ce78 SR |
247 | extern struct property *of_find_property(const struct device_node *np, |
248 | const char *name, | |
249 | int *lenp); | |
ad54a0cf HS |
250 | extern int of_property_count_elems_of_size(const struct device_node *np, |
251 | const char *propname, int elem_size); | |
3daf3726 TP |
252 | extern int of_property_read_u32_index(const struct device_node *np, |
253 | const char *propname, | |
254 | u32 index, u32 *out_value); | |
be193249 VK |
255 | extern int of_property_read_u8_array(const struct device_node *np, |
256 | const char *propname, u8 *out_values, size_t sz); | |
257 | extern int of_property_read_u16_array(const struct device_node *np, | |
258 | const char *propname, u16 *out_values, size_t sz); | |
0e373639 | 259 | extern int of_property_read_u32_array(const struct device_node *np, |
aac285c6 | 260 | const char *propname, |
0e373639 RH |
261 | u32 *out_values, |
262 | size_t sz); | |
4cd7f7a3 JI |
263 | extern int of_property_read_u64(const struct device_node *np, |
264 | const char *propname, u64 *out_value); | |
0e373639 | 265 | |
aac285c6 JI |
266 | extern int of_property_read_string(struct device_node *np, |
267 | const char *propname, | |
268 | const char **out_string); | |
4fcd15a0 BC |
269 | extern int of_property_read_string_index(struct device_node *np, |
270 | const char *propname, | |
271 | int index, const char **output); | |
7aff0fe3 GL |
272 | extern int of_property_match_string(struct device_node *np, |
273 | const char *propname, | |
274 | const char *string); | |
4fcd15a0 BC |
275 | extern int of_property_count_strings(struct device_node *np, |
276 | const char *propname); | |
76c1ce78 SR |
277 | extern int of_device_is_compatible(const struct device_node *device, |
278 | const char *); | |
834d97d4 | 279 | extern int of_device_is_available(const struct device_node *device); |
76c1ce78 SR |
280 | extern const void *of_get_property(const struct device_node *node, |
281 | const char *name, | |
282 | int *lenp); | |
183912d3 | 283 | extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread); |
8af0da93 DA |
284 | #define for_each_property_of_node(dn, pp) \ |
285 | for (pp = dn->properties; pp != NULL; pp = pp->next) | |
611cad72 | 286 | |
76c1ce78 SR |
287 | extern int of_n_addr_cells(struct device_node *np); |
288 | extern int of_n_size_cells(struct device_node *np); | |
283029d1 GL |
289 | extern const struct of_device_id *of_match_node( |
290 | const struct of_device_id *matches, const struct device_node *node); | |
3f07af49 | 291 | extern int of_modalias_node(struct device_node *node, char *modalias, int len); |
624cfca5 | 292 | extern void of_print_phandle_args(const char *msg, const struct of_phandle_args *args); |
b8fbdc42 | 293 | extern struct device_node *of_parse_phandle(const struct device_node *np, |
739649c5 GL |
294 | const char *phandle_name, |
295 | int index); | |
93c667ca | 296 | extern int of_parse_phandle_with_args(const struct device_node *np, |
64b60e09 | 297 | const char *list_name, const char *cells_name, int index, |
15c9a0ac | 298 | struct of_phandle_args *out_args); |
035fd948 SW |
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); | |
bd69f73f GL |
302 | extern int of_count_phandle_with_args(const struct device_node *np, |
303 | const char *list_name, const char *cells_name); | |
76c1ce78 | 304 | |
611cad72 SG |
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); | |
307 | ||
21b082ec GL |
308 | extern int of_machine_is_compatible(const char *compat); |
309 | ||
79d1c712 NF |
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); | |
21b082ec | 313 | |
fcdeb7fe | 314 | /* For updating the device tree at runtime */ |
1cf3d8b3 NF |
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 | |
320 | ||
321 | struct of_prop_reconfig { | |
322 | struct device_node *dn; | |
323 | struct property *prop; | |
259092a3 | 324 | struct property *old_prop; |
1cf3d8b3 NF |
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 | |
4c358e15 | 359 | static inline const char* of_node_full_name(const struct device_node *np) |
74a7f084 GL |
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 | ||
662372e4 RH |
370 | static inline struct device_node *of_find_node_by_type(struct device_node *from, |
371 | const char *type) | |
066ec1dd AS |
372 | { |
373 | return NULL; | |
374 | } | |
375 | ||
662372e4 RH |
376 | static inline struct device_node *of_find_matching_node_and_match( |
377 | struct device_node *from, | |
378 | const struct of_device_id *matches, | |
379 | const struct of_device_id **match) | |
3bcbaf6e | 380 | { |
662372e4 | 381 | return NULL; |
3bcbaf6e SAS |
382 | } |
383 | ||
20cd477c AS |
384 | static inline struct device_node *of_find_node_by_path(const char *path) |
385 | { | |
386 | return NULL; | |
387 | } | |
388 | ||
662372e4 | 389 | static inline struct device_node *of_get_parent(const struct device_node *node) |
00b2c76a | 390 | { |
662372e4 | 391 | return NULL; |
00b2c76a DH |
392 | } |
393 | ||
662372e4 RH |
394 | static inline struct device_node *of_get_next_child( |
395 | const struct device_node *node, struct device_node *prev) | |
396 | { | |
397 | return NULL; | |
398 | } | |
aba3dfff | 399 | |
662372e4 RH |
400 | static inline struct device_node *of_get_next_available_child( |
401 | const struct device_node *node, struct device_node *prev) | |
402 | { | |
403 | return NULL; | |
404 | } | |
f6f0747e | 405 | |
662372e4 RH |
406 | static inline struct device_node *of_find_node_with_property( |
407 | struct device_node *from, const char *prop_name) | |
25c040c9 OJ |
408 | { |
409 | return NULL; | |
410 | } | |
411 | ||
662372e4 | 412 | static inline bool of_have_populated_dt(void) |
183f1d0c | 413 | { |
662372e4 | 414 | return false; |
183f1d0c DA |
415 | } |
416 | ||
662372e4 RH |
417 | static inline struct device_node *of_get_child_by_name( |
418 | const struct device_node *node, | |
419 | const char *name) | |
954e04b9 | 420 | { |
662372e4 | 421 | return NULL; |
954e04b9 BW |
422 | } |
423 | ||
36a0904e RN |
424 | static inline int of_device_is_compatible(const struct device_node *device, |
425 | const char *name) | |
426 | { | |
427 | return 0; | |
428 | } | |
429 | ||
d7195696 RH |
430 | static inline int of_device_is_available(const struct device_node *device) |
431 | { | |
432 | return 0; | |
433 | } | |
434 | ||
aba3dfff SW |
435 | static inline struct property *of_find_property(const struct device_node *np, |
436 | const char *name, | |
437 | int *lenp) | |
438 | { | |
439 | return NULL; | |
440 | } | |
441 | ||
2261cc62 SG |
442 | static inline struct device_node *of_find_compatible_node( |
443 | struct device_node *from, | |
444 | const char *type, | |
445 | const char *compat) | |
446 | { | |
447 | return NULL; | |
448 | } | |
449 | ||
ad54a0cf HS |
450 | static inline int of_property_count_elems_of_size(const struct device_node *np, |
451 | const char *propname, int elem_size) | |
452 | { | |
453 | return -ENOSYS; | |
454 | } | |
455 | ||
3daf3726 TP |
456 | static inline int of_property_read_u32_index(const struct device_node *np, |
457 | const char *propname, u32 index, u32 *out_value) | |
458 | { | |
459 | return -ENOSYS; | |
460 | } | |
461 | ||
be193249 VK |
462 | static inline int of_property_read_u8_array(const struct device_node *np, |
463 | const char *propname, u8 *out_values, size_t sz) | |
464 | { | |
465 | return -ENOSYS; | |
466 | } | |
467 | ||
468 | static inline int of_property_read_u16_array(const struct device_node *np, | |
469 | const char *propname, u16 *out_values, size_t sz) | |
470 | { | |
471 | return -ENOSYS; | |
472 | } | |
473 | ||
b98c0239 | 474 | static inline int of_property_read_u32_array(const struct device_node *np, |
aac285c6 JI |
475 | const char *propname, |
476 | u32 *out_values, size_t sz) | |
b98c0239 SG |
477 | { |
478 | return -ENOSYS; | |
479 | } | |
480 | ||
481 | static inline int of_property_read_string(struct device_node *np, | |
aac285c6 JI |
482 | const char *propname, |
483 | const char **out_string) | |
b98c0239 SG |
484 | { |
485 | return -ENOSYS; | |
486 | } | |
487 | ||
4fcd15a0 BC |
488 | static inline int of_property_read_string_index(struct device_node *np, |
489 | const char *propname, int index, | |
490 | const char **out_string) | |
491 | { | |
492 | return -ENOSYS; | |
493 | } | |
494 | ||
495 | static inline int of_property_count_strings(struct device_node *np, | |
496 | const char *propname) | |
497 | { | |
498 | return -ENOSYS; | |
499 | } | |
500 | ||
89272b8c SW |
501 | static inline const void *of_get_property(const struct device_node *node, |
502 | const char *name, | |
503 | int *lenp) | |
504 | { | |
505 | return NULL; | |
506 | } | |
507 | ||
183912d3 SH |
508 | static inline struct device_node *of_get_cpu_node(int cpu, |
509 | unsigned int *thread) | |
510 | { | |
511 | return NULL; | |
512 | } | |
513 | ||
4cd7f7a3 JI |
514 | static inline int of_property_read_u64(const struct device_node *np, |
515 | const char *propname, u64 *out_value) | |
516 | { | |
517 | return -ENOSYS; | |
518 | } | |
519 | ||
bd3d5500 TR |
520 | static inline int of_property_match_string(struct device_node *np, |
521 | const char *propname, | |
522 | const char *string) | |
523 | { | |
524 | return -ENOSYS; | |
525 | } | |
526 | ||
b8fbdc42 | 527 | static inline struct device_node *of_parse_phandle(const struct device_node *np, |
36a0904e RN |
528 | const char *phandle_name, |
529 | int index) | |
530 | { | |
531 | return NULL; | |
532 | } | |
533 | ||
e05e5070 TR |
534 | static inline int of_parse_phandle_with_args(struct device_node *np, |
535 | const char *list_name, | |
536 | const char *cells_name, | |
537 | int index, | |
538 | struct of_phandle_args *out_args) | |
539 | { | |
540 | return -ENOSYS; | |
541 | } | |
542 | ||
035fd948 SW |
543 | static inline int of_parse_phandle_with_fixed_args(const struct device_node *np, |
544 | const char *list_name, int cells_count, int index, | |
545 | struct of_phandle_args *out_args) | |
546 | { | |
547 | return -ENOSYS; | |
548 | } | |
549 | ||
bd69f73f GL |
550 | static inline int of_count_phandle_with_args(struct device_node *np, |
551 | const char *list_name, | |
552 | const char *cells_name) | |
553 | { | |
554 | return -ENOSYS; | |
555 | } | |
556 | ||
ed5f886d NF |
557 | static inline int of_alias_get_id(struct device_node *np, const char *stem) |
558 | { | |
559 | return -ENOSYS; | |
560 | } | |
561 | ||
50e07f88 SW |
562 | static inline int of_machine_is_compatible(const char *compat) |
563 | { | |
564 | return 0; | |
565 | } | |
566 | ||
5c19e952 SH |
567 | static inline int of_device_is_stdout_path(struct device_node *dn) |
568 | { | |
569 | return 0; | |
570 | } | |
571 | ||
2adfffa2 SAS |
572 | static inline const __be32 *of_prop_next_u32(struct property *prop, |
573 | const __be32 *cur, u32 *pu) | |
574 | { | |
575 | return NULL; | |
576 | } | |
577 | ||
578 | static inline const char *of_prop_next_string(struct property *prop, | |
579 | const char *cur) | |
580 | { | |
581 | return NULL; | |
582 | } | |
583 | ||
3a1e362e | 584 | #define of_match_ptr(_ptr) NULL |
5762c205 | 585 | #define of_match_node(_matches, _node) NULL |
9dfbf207 | 586 | #endif /* CONFIG_OF */ |
b98c0239 | 587 | |
0c3f061c RH |
588 | #if defined(CONFIG_OF) && defined(CONFIG_NUMA) |
589 | extern int of_node_to_nid(struct device_node *np); | |
590 | #else | |
591 | static inline int of_node_to_nid(struct device_node *device) { return 0; } | |
5ca4db61 PM |
592 | #endif |
593 | ||
662372e4 RH |
594 | static inline struct device_node *of_find_matching_node( |
595 | struct device_node *from, | |
596 | const struct of_device_id *matches) | |
597 | { | |
598 | return of_find_matching_node_and_match(from, matches, NULL); | |
599 | } | |
600 | ||
ad54a0cf HS |
601 | /** |
602 | * of_property_count_u8_elems - Count the number of u8 elements in a property | |
603 | * | |
604 | * @np: device node from which the property value is to be read. | |
605 | * @propname: name of the property to be searched. | |
606 | * | |
607 | * Search for a property in a device node and count the number of u8 elements | |
608 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
609 | * not exist or its length does not match a multiple of u8 and -ENODATA if the | |
610 | * property does not have a value. | |
611 | */ | |
612 | static inline int of_property_count_u8_elems(const struct device_node *np, | |
613 | const char *propname) | |
614 | { | |
615 | return of_property_count_elems_of_size(np, propname, sizeof(u8)); | |
616 | } | |
617 | ||
618 | /** | |
619 | * of_property_count_u16_elems - Count the number of u16 elements in a property | |
620 | * | |
621 | * @np: device node from which the property value is to be read. | |
622 | * @propname: name of the property to be searched. | |
623 | * | |
624 | * Search for a property in a device node and count the number of u16 elements | |
625 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
626 | * not exist or its length does not match a multiple of u16 and -ENODATA if the | |
627 | * property does not have a value. | |
628 | */ | |
629 | static inline int of_property_count_u16_elems(const struct device_node *np, | |
630 | const char *propname) | |
631 | { | |
632 | return of_property_count_elems_of_size(np, propname, sizeof(u16)); | |
633 | } | |
634 | ||
635 | /** | |
636 | * of_property_count_u32_elems - Count the number of u32 elements in a property | |
637 | * | |
638 | * @np: device node from which the property value is to be read. | |
639 | * @propname: name of the property to be searched. | |
640 | * | |
641 | * Search for a property in a device node and count the number of u32 elements | |
642 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
643 | * not exist or its length does not match a multiple of u32 and -ENODATA if the | |
644 | * property does not have a value. | |
645 | */ | |
646 | static inline int of_property_count_u32_elems(const struct device_node *np, | |
647 | const char *propname) | |
648 | { | |
649 | return of_property_count_elems_of_size(np, propname, sizeof(u32)); | |
650 | } | |
651 | ||
652 | /** | |
653 | * of_property_count_u64_elems - Count the number of u64 elements in a property | |
654 | * | |
655 | * @np: device node from which the property value is to be read. | |
656 | * @propname: name of the property to be searched. | |
657 | * | |
658 | * Search for a property in a device node and count the number of u64 elements | |
659 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
660 | * not exist or its length does not match a multiple of u64 and -ENODATA if the | |
661 | * property does not have a value. | |
662 | */ | |
663 | static inline int of_property_count_u64_elems(const struct device_node *np, | |
664 | const char *propname) | |
665 | { | |
666 | return of_property_count_elems_of_size(np, propname, sizeof(u64)); | |
667 | } | |
668 | ||
fa4d34cc JCPV |
669 | /** |
670 | * of_property_read_bool - Findfrom a property | |
671 | * @np: device node from which the property value is to be read. | |
672 | * @propname: name of the property to be searched. | |
673 | * | |
674 | * Search for a property in a device node. | |
675 | * Returns true if the property exist false otherwise. | |
676 | */ | |
677 | static inline bool of_property_read_bool(const struct device_node *np, | |
678 | const char *propname) | |
679 | { | |
680 | struct property *prop = of_find_property(np, propname, NULL); | |
681 | ||
682 | return prop ? true : false; | |
683 | } | |
684 | ||
be193249 VK |
685 | static inline int of_property_read_u8(const struct device_node *np, |
686 | const char *propname, | |
687 | u8 *out_value) | |
688 | { | |
689 | return of_property_read_u8_array(np, propname, out_value, 1); | |
690 | } | |
691 | ||
692 | static inline int of_property_read_u16(const struct device_node *np, | |
693 | const char *propname, | |
694 | u16 *out_value) | |
695 | { | |
696 | return of_property_read_u16_array(np, propname, out_value, 1); | |
697 | } | |
698 | ||
b98c0239 | 699 | static inline int of_property_read_u32(const struct device_node *np, |
aac285c6 | 700 | const char *propname, |
b98c0239 SG |
701 | u32 *out_value) |
702 | { | |
703 | return of_property_read_u32_array(np, propname, out_value, 1); | |
704 | } | |
705 | ||
2adfffa2 SAS |
706 | #define of_property_for_each_u32(np, propname, prop, p, u) \ |
707 | for (prop = of_find_property(np, propname, NULL), \ | |
708 | p = of_prop_next_u32(prop, NULL, &u); \ | |
709 | p; \ | |
710 | p = of_prop_next_u32(prop, p, &u)) | |
711 | ||
712 | #define of_property_for_each_string(np, propname, prop, s) \ | |
713 | for (prop = of_find_property(np, propname, NULL), \ | |
714 | s = of_prop_next_string(prop, NULL); \ | |
715 | s; \ | |
716 | s = of_prop_next_string(prop, s)) | |
717 | ||
662372e4 RH |
718 | #define for_each_node_by_name(dn, name) \ |
719 | for (dn = of_find_node_by_name(NULL, name); dn; \ | |
720 | dn = of_find_node_by_name(dn, name)) | |
721 | #define for_each_node_by_type(dn, type) \ | |
722 | for (dn = of_find_node_by_type(NULL, type); dn; \ | |
723 | dn = of_find_node_by_type(dn, type)) | |
724 | #define for_each_compatible_node(dn, type, compatible) \ | |
725 | for (dn = of_find_compatible_node(NULL, type, compatible); dn; \ | |
726 | dn = of_find_compatible_node(dn, type, compatible)) | |
727 | #define for_each_matching_node(dn, matches) \ | |
728 | for (dn = of_find_matching_node(NULL, matches); dn; \ | |
729 | dn = of_find_matching_node(dn, matches)) | |
730 | #define for_each_matching_node_and_match(dn, matches, match) \ | |
731 | for (dn = of_find_matching_node_and_match(NULL, matches, match); \ | |
732 | dn; dn = of_find_matching_node_and_match(dn, matches, match)) | |
733 | ||
734 | #define for_each_child_of_node(parent, child) \ | |
735 | for (child = of_get_next_child(parent, NULL); child != NULL; \ | |
736 | child = of_get_next_child(parent, child)) | |
737 | #define for_each_available_child_of_node(parent, child) \ | |
738 | for (child = of_get_next_available_child(parent, NULL); child != NULL; \ | |
739 | child = of_get_next_available_child(parent, child)) | |
740 | ||
741 | #define for_each_node_with_property(dn, prop_name) \ | |
742 | for (dn = of_find_node_with_property(NULL, prop_name); dn; \ | |
743 | dn = of_find_node_with_property(dn, prop_name)) | |
744 | ||
745 | static inline int of_get_child_count(const struct device_node *np) | |
746 | { | |
747 | struct device_node *child; | |
748 | int num = 0; | |
749 | ||
750 | for_each_child_of_node(np, child) | |
751 | num++; | |
752 | ||
753 | return num; | |
754 | } | |
755 | ||
756 | static inline int of_get_available_child_count(const struct device_node *np) | |
757 | { | |
758 | struct device_node *child; | |
759 | int num = 0; | |
760 | ||
761 | for_each_available_child_of_node(np, child) | |
762 | num++; | |
763 | ||
764 | return num; | |
765 | } | |
766 | ||
54196ccb RH |
767 | #ifdef CONFIG_OF |
768 | #define _OF_DECLARE(table, name, compat, fn, fn_type) \ | |
769 | static const struct of_device_id __of_table_##name \ | |
770 | __used __section(__##table##_of_table) \ | |
771 | = { .compatible = compat, \ | |
772 | .data = (fn == (fn_type)NULL) ? fn : fn } | |
773 | #else | |
774 | #define _OF_DECLARE(table, name, compat, fn, fn_type) \ | |
775 | static const struct of_device_id __of_table_##name \ | |
776 | __attribute__((unused)) \ | |
777 | = { .compatible = compat, \ | |
778 | .data = (fn == (fn_type)NULL) ? fn : fn } | |
779 | #endif | |
780 | ||
781 | typedef int (*of_init_fn_2)(struct device_node *, struct device_node *); | |
782 | typedef void (*of_init_fn_1)(struct device_node *); | |
783 | ||
784 | #define OF_DECLARE_1(table, name, compat, fn) \ | |
785 | _OF_DECLARE(table, name, compat, fn, of_init_fn_1) | |
786 | #define OF_DECLARE_2(table, name, compat, fn) \ | |
787 | _OF_DECLARE(table, name, compat, fn, of_init_fn_2) | |
788 | ||
76c1ce78 | 789 | #endif /* _LINUX_OF_H */ |