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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> |
b31384fa | 26 | #include <linux/property.h> |
7518b589 | 27 | #include <linux/list.h> |
76c1ce78 | 28 | |
2e89e685 | 29 | #include <asm/byteorder.h> |
d0a99402 | 30 | #include <asm/errno.h> |
2e89e685 | 31 | |
731581e6 GL |
32 | typedef u32 phandle; |
33 | typedef u32 ihandle; | |
34 | ||
35 | struct property { | |
36 | char *name; | |
37 | int length; | |
38 | void *value; | |
39 | struct property *next; | |
40 | unsigned long _flags; | |
41 | unsigned int unique_id; | |
75b57ecf | 42 | struct bin_attribute attr; |
731581e6 GL |
43 | }; |
44 | ||
6f192492 GL |
45 | #if defined(CONFIG_SPARC) |
46 | struct of_irq_controller; | |
47 | #endif | |
48 | ||
49 | struct device_node { | |
50 | const char *name; | |
51 | const char *type; | |
6016a363 | 52 | phandle phandle; |
c22618a1 | 53 | const char *full_name; |
8a0662d9 | 54 | struct fwnode_handle fwnode; |
6f192492 GL |
55 | |
56 | struct property *properties; | |
57 | struct property *deadprops; /* removed properties */ | |
58 | struct device_node *parent; | |
59 | struct device_node *child; | |
60 | struct device_node *sibling; | |
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 | ||
f5242e5a GL |
78 | struct of_reconfig_data { |
79 | struct device_node *dn; | |
80 | struct property *prop; | |
81 | struct property *old_prop; | |
82 | }; | |
83 | ||
0829f6d1 PA |
84 | /* initialize a node */ |
85 | extern struct kobj_type of_node_ktype; | |
86 | static inline void of_node_init(struct device_node *node) | |
87 | { | |
88 | kobject_init(&node->kobj, &of_node_ktype); | |
8a0662d9 | 89 | node->fwnode.type = FWNODE_OF; |
0829f6d1 PA |
90 | } |
91 | ||
92 | /* true when node is initialized */ | |
93 | static inline int of_node_is_initialized(struct device_node *node) | |
94 | { | |
95 | return node && node->kobj.state_initialized; | |
96 | } | |
97 | ||
98 | /* true when node is attached (i.e. present on sysfs) */ | |
99 | static inline int of_node_is_attached(struct device_node *node) | |
100 | { | |
101 | return node && node->kobj.state_in_sysfs; | |
102 | } | |
103 | ||
0f22dd39 GL |
104 | #ifdef CONFIG_OF_DYNAMIC |
105 | extern struct device_node *of_node_get(struct device_node *node); | |
106 | extern void of_node_put(struct device_node *node); | |
107 | #else /* CONFIG_OF_DYNAMIC */ | |
3ecdd051 RH |
108 | /* Dummy ref counting routines - to be implemented later */ |
109 | static inline struct device_node *of_node_get(struct device_node *node) | |
110 | { | |
111 | return node; | |
112 | } | |
0f22dd39 GL |
113 | static inline void of_node_put(struct device_node *node) { } |
114 | #endif /* !CONFIG_OF_DYNAMIC */ | |
3ecdd051 | 115 | |
41f88009 | 116 | /* Pointer for first entry in chain of all nodes. */ |
5063e25a | 117 | extern struct device_node *of_root; |
fc0bdae4 | 118 | extern struct device_node *of_chosen; |
611cad72 | 119 | extern struct device_node *of_aliases; |
a752ee56 | 120 | extern struct device_node *of_stdout; |
d6d3c4e6 | 121 | extern raw_spinlock_t devtree_lock; |
41f88009 | 122 | |
391b459d PA |
123 | /* flag descriptions (need to be visible even when !CONFIG_OF) */ |
124 | #define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */ | |
125 | #define OF_DETACHED 2 /* node has been detached from the device tree */ | |
126 | #define OF_POPULATED 3 /* device already created for the node */ | |
127 | #define OF_POPULATED_BUS 4 /* of_platform_populate recursed to children of this node */ | |
128 | ||
b1d06b60 GR |
129 | #define OF_BAD_ADDR ((u64)-1) |
130 | ||
6d09dc6b | 131 | #ifdef CONFIG_OF |
194ec936 SH |
132 | void of_core_init(void); |
133 | ||
8a0662d9 RW |
134 | static inline bool is_of_node(struct fwnode_handle *fwnode) |
135 | { | |
136 | return fwnode && fwnode->type == FWNODE_OF; | |
137 | } | |
138 | ||
c181fb3e | 139 | static inline struct device_node *to_of_node(struct fwnode_handle *fwnode) |
8a0662d9 | 140 | { |
4bf01181 AS |
141 | return is_of_node(fwnode) ? |
142 | container_of(fwnode, struct device_node, fwnode) : NULL; | |
8a0662d9 RW |
143 | } |
144 | ||
3bcbaf6e SAS |
145 | static inline bool of_have_populated_dt(void) |
146 | { | |
5063e25a | 147 | return of_root != NULL; |
3bcbaf6e SAS |
148 | } |
149 | ||
035ebefc AS |
150 | static inline bool of_node_is_root(const struct device_node *node) |
151 | { | |
152 | return node && (node->parent == NULL); | |
153 | } | |
154 | ||
50436312 GL |
155 | static inline int of_node_check_flag(struct device_node *n, unsigned long flag) |
156 | { | |
157 | return test_bit(flag, &n->_flags); | |
158 | } | |
159 | ||
c6e126de PM |
160 | static inline int of_node_test_and_set_flag(struct device_node *n, |
161 | unsigned long flag) | |
162 | { | |
163 | return test_and_set_bit(flag, &n->_flags); | |
164 | } | |
165 | ||
50436312 GL |
166 | static inline void of_node_set_flag(struct device_node *n, unsigned long flag) |
167 | { | |
168 | set_bit(flag, &n->_flags); | |
169 | } | |
170 | ||
588453c6 PA |
171 | static inline void of_node_clear_flag(struct device_node *n, unsigned long flag) |
172 | { | |
173 | clear_bit(flag, &n->_flags); | |
174 | } | |
175 | ||
176 | static inline int of_property_check_flag(struct property *p, unsigned long flag) | |
177 | { | |
178 | return test_bit(flag, &p->_flags); | |
179 | } | |
180 | ||
181 | static inline void of_property_set_flag(struct property *p, unsigned long flag) | |
182 | { | |
183 | set_bit(flag, &p->_flags); | |
184 | } | |
185 | ||
186 | static inline void of_property_clear_flag(struct property *p, unsigned long flag) | |
187 | { | |
188 | clear_bit(flag, &p->_flags); | |
189 | } | |
190 | ||
5063e25a | 191 | extern struct device_node *__of_find_all_nodes(struct device_node *prev); |
e91edcf5 GL |
192 | extern struct device_node *of_find_all_nodes(struct device_node *prev); |
193 | ||
b6caf2ad | 194 | /* |
3d6b8828 | 195 | * OF address retrieval & translation |
b6caf2ad GL |
196 | */ |
197 | ||
198 | /* Helper to read a big number; size is in cells (not bytes) */ | |
2e89e685 | 199 | static inline u64 of_read_number(const __be32 *cell, int size) |
b6caf2ad GL |
200 | { |
201 | u64 r = 0; | |
202 | while (size--) | |
2e89e685 | 203 | r = (r << 32) | be32_to_cpu(*(cell++)); |
b6caf2ad GL |
204 | return r; |
205 | } | |
206 | ||
207 | /* Like of_read_number, but we want an unsigned long result */ | |
2e89e685 | 208 | static inline unsigned long of_read_ulong(const __be32 *cell, int size) |
b6caf2ad | 209 | { |
2be09cb9 GL |
210 | /* toss away upper bits if unsigned long is smaller than u64 */ |
211 | return of_read_number(cell, size); | |
b6caf2ad | 212 | } |
b6caf2ad | 213 | |
b5b4bb3f | 214 | #if defined(CONFIG_SPARC) |
76c1ce78 | 215 | #include <asm/prom.h> |
b5b4bb3f | 216 | #endif |
76c1ce78 | 217 | |
7c7b60cb GL |
218 | /* Default #address and #size cells. Allow arch asm/prom.h to override */ |
219 | #if !defined(OF_ROOT_NODE_ADDR_CELLS_DEFAULT) | |
220 | #define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1 | |
221 | #define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1 | |
222 | #endif | |
223 | ||
224 | /* Default string compare functions, Allow arch asm/prom.h to override */ | |
225 | #if !defined(of_compat_cmp) | |
1976152f | 226 | #define of_compat_cmp(s1, s2, l) strcasecmp((s1), (s2)) |
7c7b60cb GL |
227 | #define of_prop_cmp(s1, s2) strcmp((s1), (s2)) |
228 | #define of_node_cmp(s1, s2) strcasecmp((s1), (s2)) | |
229 | #endif | |
230 | ||
61e955db GL |
231 | #define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags) |
232 | #define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags) | |
233 | ||
c0a05bf0 | 234 | static inline const char *of_node_full_name(const struct device_node *np) |
74a7f084 GL |
235 | { |
236 | return np ? np->full_name : "<no-node>"; | |
237 | } | |
238 | ||
5063e25a GL |
239 | #define for_each_of_allnodes_from(from, dn) \ |
240 | for (dn = __of_find_all_nodes(from); dn; dn = __of_find_all_nodes(dn)) | |
241 | #define for_each_of_allnodes(dn) for_each_of_allnodes_from(NULL, dn) | |
76c1ce78 SR |
242 | extern struct device_node *of_find_node_by_name(struct device_node *from, |
243 | const char *name); | |
76c1ce78 SR |
244 | extern struct device_node *of_find_node_by_type(struct device_node *from, |
245 | const char *type); | |
76c1ce78 SR |
246 | extern struct device_node *of_find_compatible_node(struct device_node *from, |
247 | const char *type, const char *compat); | |
50c8af4c SW |
248 | extern struct device_node *of_find_matching_node_and_match( |
249 | struct device_node *from, | |
250 | const struct of_device_id *matches, | |
251 | const struct of_device_id **match); | |
662372e4 | 252 | |
75c28c09 LL |
253 | extern struct device_node *of_find_node_opts_by_path(const char *path, |
254 | const char **opts); | |
255 | static inline struct device_node *of_find_node_by_path(const char *path) | |
256 | { | |
257 | return of_find_node_opts_by_path(path, NULL); | |
258 | } | |
259 | ||
76c1ce78 SR |
260 | extern struct device_node *of_find_node_by_phandle(phandle handle); |
261 | extern struct device_node *of_get_parent(const struct device_node *node); | |
f4eb0107 | 262 | extern struct device_node *of_get_next_parent(struct device_node *node); |
76c1ce78 SR |
263 | extern struct device_node *of_get_next_child(const struct device_node *node, |
264 | struct device_node *prev); | |
3296193d TT |
265 | extern struct device_node *of_get_next_available_child( |
266 | const struct device_node *node, struct device_node *prev); | |
267 | ||
9c19761a SK |
268 | extern struct device_node *of_get_child_by_name(const struct device_node *node, |
269 | const char *name); | |
954e04b9 | 270 | |
a3e31b45 SK |
271 | /* cache lookup */ |
272 | extern struct device_node *of_find_next_cache_node(const struct device_node *); | |
1e291b14 ME |
273 | extern struct device_node *of_find_node_with_property( |
274 | struct device_node *from, const char *prop_name); | |
1e291b14 | 275 | |
76c1ce78 SR |
276 | extern struct property *of_find_property(const struct device_node *np, |
277 | const char *name, | |
278 | int *lenp); | |
ad54a0cf HS |
279 | extern int of_property_count_elems_of_size(const struct device_node *np, |
280 | const char *propname, int elem_size); | |
3daf3726 TP |
281 | extern int of_property_read_u32_index(const struct device_node *np, |
282 | const char *propname, | |
283 | u32 index, u32 *out_value); | |
be193249 VK |
284 | extern int of_property_read_u8_array(const struct device_node *np, |
285 | const char *propname, u8 *out_values, size_t sz); | |
286 | extern int of_property_read_u16_array(const struct device_node *np, | |
287 | const char *propname, u16 *out_values, size_t sz); | |
0e373639 | 288 | extern int of_property_read_u32_array(const struct device_node *np, |
aac285c6 | 289 | const char *propname, |
0e373639 RH |
290 | u32 *out_values, |
291 | size_t sz); | |
4cd7f7a3 JI |
292 | extern int of_property_read_u64(const struct device_node *np, |
293 | const char *propname, u64 *out_value); | |
b31384fa RW |
294 | extern int of_property_read_u64_array(const struct device_node *np, |
295 | const char *propname, | |
296 | u64 *out_values, | |
297 | size_t sz); | |
0e373639 | 298 | |
fe99c707 | 299 | extern int of_property_read_string(const struct device_node *np, |
aac285c6 JI |
300 | const char *propname, |
301 | const char **out_string); | |
fe99c707 | 302 | extern int of_property_match_string(const struct device_node *np, |
7aff0fe3 GL |
303 | const char *propname, |
304 | const char *string); | |
fe99c707 | 305 | extern int of_property_read_string_helper(const struct device_node *np, |
a87fa1d8 GL |
306 | const char *propname, |
307 | const char **out_strs, size_t sz, int index); | |
76c1ce78 SR |
308 | extern int of_device_is_compatible(const struct device_node *device, |
309 | const char *); | |
53a4ab96 | 310 | extern bool of_device_is_available(const struct device_node *device); |
37786c7f | 311 | extern bool of_device_is_big_endian(const struct device_node *device); |
76c1ce78 SR |
312 | extern const void *of_get_property(const struct device_node *node, |
313 | const char *name, | |
314 | int *lenp); | |
183912d3 | 315 | extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread); |
8af0da93 DA |
316 | #define for_each_property_of_node(dn, pp) \ |
317 | for (pp = dn->properties; pp != NULL; pp = pp->next) | |
611cad72 | 318 | |
76c1ce78 SR |
319 | extern int of_n_addr_cells(struct device_node *np); |
320 | extern int of_n_size_cells(struct device_node *np); | |
283029d1 GL |
321 | extern const struct of_device_id *of_match_node( |
322 | const struct of_device_id *matches, const struct device_node *node); | |
3f07af49 | 323 | extern int of_modalias_node(struct device_node *node, char *modalias, int len); |
624cfca5 | 324 | extern void of_print_phandle_args(const char *msg, const struct of_phandle_args *args); |
b8fbdc42 | 325 | extern struct device_node *of_parse_phandle(const struct device_node *np, |
739649c5 GL |
326 | const char *phandle_name, |
327 | int index); | |
93c667ca | 328 | extern int of_parse_phandle_with_args(const struct device_node *np, |
64b60e09 | 329 | const char *list_name, const char *cells_name, int index, |
15c9a0ac | 330 | struct of_phandle_args *out_args); |
035fd948 SW |
331 | extern int of_parse_phandle_with_fixed_args(const struct device_node *np, |
332 | const char *list_name, int cells_count, int index, | |
333 | struct of_phandle_args *out_args); | |
bd69f73f GL |
334 | extern int of_count_phandle_with_args(const struct device_node *np, |
335 | const char *list_name, const char *cells_name); | |
76c1ce78 | 336 | |
611cad72 SG |
337 | extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align)); |
338 | extern int of_alias_get_id(struct device_node *np, const char *stem); | |
351d224f | 339 | extern int of_alias_get_highest_id(const char *stem); |
611cad72 | 340 | |
21b082ec GL |
341 | extern int of_machine_is_compatible(const char *compat); |
342 | ||
79d1c712 NF |
343 | extern int of_add_property(struct device_node *np, struct property *prop); |
344 | extern int of_remove_property(struct device_node *np, struct property *prop); | |
345 | extern int of_update_property(struct device_node *np, struct property *newprop); | |
21b082ec | 346 | |
fcdeb7fe | 347 | /* For updating the device tree at runtime */ |
1cf3d8b3 NF |
348 | #define OF_RECONFIG_ATTACH_NODE 0x0001 |
349 | #define OF_RECONFIG_DETACH_NODE 0x0002 | |
350 | #define OF_RECONFIG_ADD_PROPERTY 0x0003 | |
351 | #define OF_RECONFIG_REMOVE_PROPERTY 0x0004 | |
352 | #define OF_RECONFIG_UPDATE_PROPERTY 0x0005 | |
353 | ||
1cf3d8b3 NF |
354 | extern int of_attach_node(struct device_node *); |
355 | extern int of_detach_node(struct device_node *); | |
fcdeb7fe | 356 | |
3a1e362e | 357 | #define of_match_ptr(_ptr) (_ptr) |
c541adc6 SW |
358 | |
359 | /* | |
360 | * struct property *prop; | |
361 | * const __be32 *p; | |
362 | * u32 u; | |
363 | * | |
364 | * of_property_for_each_u32(np, "propname", prop, p, u) | |
365 | * printk("U32 value: %x\n", u); | |
366 | */ | |
367 | const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur, | |
368 | u32 *pu); | |
c541adc6 SW |
369 | /* |
370 | * struct property *prop; | |
371 | * const char *s; | |
372 | * | |
373 | * of_property_for_each_string(np, "propname", prop, s) | |
374 | * printk("String value: %s\n", s); | |
375 | */ | |
376 | const char *of_prop_next_string(struct property *prop, const char *cur); | |
c541adc6 | 377 | |
3482f2c5 | 378 | bool of_console_check(struct device_node *dn, char *name, int index); |
5c19e952 | 379 | |
b98c0239 | 380 | #else /* CONFIG_OF */ |
3bcbaf6e | 381 | |
194ec936 SH |
382 | static inline void of_core_init(void) |
383 | { | |
384 | } | |
385 | ||
8a0662d9 RW |
386 | static inline bool is_of_node(struct fwnode_handle *fwnode) |
387 | { | |
388 | return false; | |
389 | } | |
390 | ||
c181fb3e | 391 | static inline struct device_node *to_of_node(struct fwnode_handle *fwnode) |
8a0662d9 RW |
392 | { |
393 | return NULL; | |
394 | } | |
395 | ||
4c358e15 | 396 | static inline const char* of_node_full_name(const struct device_node *np) |
74a7f084 GL |
397 | { |
398 | return "<no-node>"; | |
399 | } | |
400 | ||
1cc44f43 PU |
401 | static inline struct device_node *of_find_node_by_name(struct device_node *from, |
402 | const char *name) | |
403 | { | |
404 | return NULL; | |
405 | } | |
406 | ||
662372e4 RH |
407 | static inline struct device_node *of_find_node_by_type(struct device_node *from, |
408 | const char *type) | |
066ec1dd AS |
409 | { |
410 | return NULL; | |
411 | } | |
412 | ||
662372e4 RH |
413 | static inline struct device_node *of_find_matching_node_and_match( |
414 | struct device_node *from, | |
415 | const struct of_device_id *matches, | |
416 | const struct of_device_id **match) | |
3bcbaf6e | 417 | { |
662372e4 | 418 | return NULL; |
3bcbaf6e SAS |
419 | } |
420 | ||
20cd477c AS |
421 | static inline struct device_node *of_find_node_by_path(const char *path) |
422 | { | |
423 | return NULL; | |
424 | } | |
425 | ||
75c28c09 LL |
426 | static inline struct device_node *of_find_node_opts_by_path(const char *path, |
427 | const char **opts) | |
428 | { | |
429 | return NULL; | |
430 | } | |
431 | ||
ce16b9d2 SA |
432 | static inline struct device_node *of_find_node_by_phandle(phandle handle) |
433 | { | |
434 | return NULL; | |
435 | } | |
436 | ||
662372e4 | 437 | static inline struct device_node *of_get_parent(const struct device_node *node) |
00b2c76a | 438 | { |
662372e4 | 439 | return NULL; |
00b2c76a DH |
440 | } |
441 | ||
662372e4 RH |
442 | static inline struct device_node *of_get_next_child( |
443 | const struct device_node *node, struct device_node *prev) | |
444 | { | |
445 | return NULL; | |
446 | } | |
aba3dfff | 447 | |
662372e4 RH |
448 | static inline struct device_node *of_get_next_available_child( |
449 | const struct device_node *node, struct device_node *prev) | |
450 | { | |
451 | return NULL; | |
452 | } | |
f6f0747e | 453 | |
662372e4 RH |
454 | static inline struct device_node *of_find_node_with_property( |
455 | struct device_node *from, const char *prop_name) | |
25c040c9 OJ |
456 | { |
457 | return NULL; | |
458 | } | |
459 | ||
662372e4 | 460 | static inline bool of_have_populated_dt(void) |
183f1d0c | 461 | { |
662372e4 | 462 | return false; |
183f1d0c DA |
463 | } |
464 | ||
662372e4 RH |
465 | static inline struct device_node *of_get_child_by_name( |
466 | const struct device_node *node, | |
467 | const char *name) | |
954e04b9 | 468 | { |
662372e4 | 469 | return NULL; |
954e04b9 BW |
470 | } |
471 | ||
36a0904e RN |
472 | static inline int of_device_is_compatible(const struct device_node *device, |
473 | const char *name) | |
474 | { | |
475 | return 0; | |
476 | } | |
477 | ||
53a4ab96 | 478 | static inline bool of_device_is_available(const struct device_node *device) |
d7195696 | 479 | { |
53a4ab96 | 480 | return false; |
d7195696 RH |
481 | } |
482 | ||
37786c7f KC |
483 | static inline bool of_device_is_big_endian(const struct device_node *device) |
484 | { | |
485 | return false; | |
d7195696 RH |
486 | } |
487 | ||
aba3dfff SW |
488 | static inline struct property *of_find_property(const struct device_node *np, |
489 | const char *name, | |
490 | int *lenp) | |
491 | { | |
492 | return NULL; | |
493 | } | |
494 | ||
2261cc62 SG |
495 | static inline struct device_node *of_find_compatible_node( |
496 | struct device_node *from, | |
497 | const char *type, | |
498 | const char *compat) | |
499 | { | |
500 | return NULL; | |
501 | } | |
502 | ||
ad54a0cf HS |
503 | static inline int of_property_count_elems_of_size(const struct device_node *np, |
504 | const char *propname, int elem_size) | |
505 | { | |
506 | return -ENOSYS; | |
507 | } | |
508 | ||
3daf3726 TP |
509 | static inline int of_property_read_u32_index(const struct device_node *np, |
510 | const char *propname, u32 index, u32 *out_value) | |
511 | { | |
512 | return -ENOSYS; | |
513 | } | |
514 | ||
be193249 VK |
515 | static inline int of_property_read_u8_array(const struct device_node *np, |
516 | const char *propname, u8 *out_values, size_t sz) | |
517 | { | |
518 | return -ENOSYS; | |
519 | } | |
520 | ||
521 | static inline int of_property_read_u16_array(const struct device_node *np, | |
522 | const char *propname, u16 *out_values, size_t sz) | |
523 | { | |
524 | return -ENOSYS; | |
525 | } | |
526 | ||
b98c0239 | 527 | static inline int of_property_read_u32_array(const struct device_node *np, |
aac285c6 JI |
528 | const char *propname, |
529 | u32 *out_values, size_t sz) | |
b98c0239 SG |
530 | { |
531 | return -ENOSYS; | |
532 | } | |
533 | ||
b31384fa RW |
534 | static inline int of_property_read_u64_array(const struct device_node *np, |
535 | const char *propname, | |
536 | u64 *out_values, size_t sz) | |
537 | { | |
538 | return -ENOSYS; | |
539 | } | |
540 | ||
fe99c707 | 541 | static inline int of_property_read_string(const struct device_node *np, |
aac285c6 JI |
542 | const char *propname, |
543 | const char **out_string) | |
b98c0239 SG |
544 | { |
545 | return -ENOSYS; | |
546 | } | |
547 | ||
fe99c707 | 548 | static inline int of_property_read_string_helper(const struct device_node *np, |
a87fa1d8 GL |
549 | const char *propname, |
550 | const char **out_strs, size_t sz, int index) | |
4fcd15a0 BC |
551 | { |
552 | return -ENOSYS; | |
553 | } | |
554 | ||
89272b8c SW |
555 | static inline const void *of_get_property(const struct device_node *node, |
556 | const char *name, | |
557 | int *lenp) | |
558 | { | |
559 | return NULL; | |
560 | } | |
561 | ||
183912d3 SK |
562 | static inline struct device_node *of_get_cpu_node(int cpu, |
563 | unsigned int *thread) | |
564 | { | |
565 | return NULL; | |
566 | } | |
567 | ||
4cd7f7a3 JI |
568 | static inline int of_property_read_u64(const struct device_node *np, |
569 | const char *propname, u64 *out_value) | |
570 | { | |
571 | return -ENOSYS; | |
572 | } | |
573 | ||
fe99c707 | 574 | static inline int of_property_match_string(const struct device_node *np, |
bd3d5500 TR |
575 | const char *propname, |
576 | const char *string) | |
577 | { | |
578 | return -ENOSYS; | |
579 | } | |
580 | ||
b8fbdc42 | 581 | static inline struct device_node *of_parse_phandle(const struct device_node *np, |
36a0904e RN |
582 | const char *phandle_name, |
583 | int index) | |
584 | { | |
585 | return NULL; | |
586 | } | |
587 | ||
e05e5070 TR |
588 | static inline int of_parse_phandle_with_args(struct device_node *np, |
589 | const char *list_name, | |
590 | const char *cells_name, | |
591 | int index, | |
592 | struct of_phandle_args *out_args) | |
593 | { | |
594 | return -ENOSYS; | |
595 | } | |
596 | ||
035fd948 SW |
597 | static inline int of_parse_phandle_with_fixed_args(const struct device_node *np, |
598 | const char *list_name, int cells_count, int index, | |
599 | struct of_phandle_args *out_args) | |
600 | { | |
601 | return -ENOSYS; | |
602 | } | |
603 | ||
bd69f73f GL |
604 | static inline int of_count_phandle_with_args(struct device_node *np, |
605 | const char *list_name, | |
606 | const char *cells_name) | |
607 | { | |
608 | return -ENOSYS; | |
609 | } | |
610 | ||
ed5f886d NF |
611 | static inline int of_alias_get_id(struct device_node *np, const char *stem) |
612 | { | |
613 | return -ENOSYS; | |
614 | } | |
615 | ||
351d224f WS |
616 | static inline int of_alias_get_highest_id(const char *stem) |
617 | { | |
618 | return -ENOSYS; | |
619 | } | |
620 | ||
50e07f88 SW |
621 | static inline int of_machine_is_compatible(const char *compat) |
622 | { | |
623 | return 0; | |
624 | } | |
625 | ||
3482f2c5 | 626 | static inline bool of_console_check(const struct device_node *dn, const char *name, int index) |
5c19e952 | 627 | { |
3482f2c5 | 628 | return false; |
5c19e952 SH |
629 | } |
630 | ||
2adfffa2 SAS |
631 | static inline const __be32 *of_prop_next_u32(struct property *prop, |
632 | const __be32 *cur, u32 *pu) | |
633 | { | |
634 | return NULL; | |
635 | } | |
636 | ||
637 | static inline const char *of_prop_next_string(struct property *prop, | |
638 | const char *cur) | |
639 | { | |
640 | return NULL; | |
641 | } | |
642 | ||
0384e8c6 PA |
643 | static inline int of_node_check_flag(struct device_node *n, unsigned long flag) |
644 | { | |
645 | return 0; | |
646 | } | |
647 | ||
648 | static inline int of_node_test_and_set_flag(struct device_node *n, | |
649 | unsigned long flag) | |
650 | { | |
651 | return 0; | |
652 | } | |
653 | ||
654 | static inline void of_node_set_flag(struct device_node *n, unsigned long flag) | |
655 | { | |
656 | } | |
657 | ||
658 | static inline void of_node_clear_flag(struct device_node *n, unsigned long flag) | |
659 | { | |
660 | } | |
661 | ||
662 | static inline int of_property_check_flag(struct property *p, unsigned long flag) | |
663 | { | |
664 | return 0; | |
665 | } | |
666 | ||
667 | static inline void of_property_set_flag(struct property *p, unsigned long flag) | |
668 | { | |
669 | } | |
670 | ||
671 | static inline void of_property_clear_flag(struct property *p, unsigned long flag) | |
672 | { | |
673 | } | |
674 | ||
3a1e362e | 675 | #define of_match_ptr(_ptr) NULL |
5762c205 | 676 | #define of_match_node(_matches, _node) NULL |
9dfbf207 | 677 | #endif /* CONFIG_OF */ |
b98c0239 | 678 | |
0c3f061c RH |
679 | #if defined(CONFIG_OF) && defined(CONFIG_NUMA) |
680 | extern int of_node_to_nid(struct device_node *np); | |
681 | #else | |
c8fff7bc KK |
682 | static inline int of_node_to_nid(struct device_node *device) |
683 | { | |
684 | return NUMA_NO_NODE; | |
685 | } | |
5ca4db61 PM |
686 | #endif |
687 | ||
298535c0 DD |
688 | #ifdef CONFIG_OF_NUMA |
689 | extern int of_numa_init(void); | |
690 | #else | |
691 | static inline int of_numa_init(void) | |
692 | { | |
693 | return -ENOSYS; | |
694 | } | |
695 | #endif | |
696 | ||
662372e4 RH |
697 | static inline struct device_node *of_find_matching_node( |
698 | struct device_node *from, | |
699 | const struct of_device_id *matches) | |
700 | { | |
701 | return of_find_matching_node_and_match(from, matches, NULL); | |
702 | } | |
703 | ||
ad54a0cf HS |
704 | /** |
705 | * of_property_count_u8_elems - Count the number of u8 elements in a property | |
706 | * | |
707 | * @np: device node from which the property value is to be read. | |
708 | * @propname: name of the property to be searched. | |
709 | * | |
710 | * Search for a property in a device node and count the number of u8 elements | |
711 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
712 | * not exist or its length does not match a multiple of u8 and -ENODATA if the | |
713 | * property does not have a value. | |
714 | */ | |
715 | static inline int of_property_count_u8_elems(const struct device_node *np, | |
716 | const char *propname) | |
717 | { | |
718 | return of_property_count_elems_of_size(np, propname, sizeof(u8)); | |
719 | } | |
720 | ||
721 | /** | |
722 | * of_property_count_u16_elems - Count the number of u16 elements in a property | |
723 | * | |
724 | * @np: device node from which the property value is to be read. | |
725 | * @propname: name of the property to be searched. | |
726 | * | |
727 | * Search for a property in a device node and count the number of u16 elements | |
728 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
729 | * not exist or its length does not match a multiple of u16 and -ENODATA if the | |
730 | * property does not have a value. | |
731 | */ | |
732 | static inline int of_property_count_u16_elems(const struct device_node *np, | |
733 | const char *propname) | |
734 | { | |
735 | return of_property_count_elems_of_size(np, propname, sizeof(u16)); | |
736 | } | |
737 | ||
738 | /** | |
739 | * of_property_count_u32_elems - Count the number of u32 elements in a property | |
740 | * | |
741 | * @np: device node from which the property value is to be read. | |
742 | * @propname: name of the property to be searched. | |
743 | * | |
744 | * Search for a property in a device node and count the number of u32 elements | |
745 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
746 | * not exist or its length does not match a multiple of u32 and -ENODATA if the | |
747 | * property does not have a value. | |
748 | */ | |
749 | static inline int of_property_count_u32_elems(const struct device_node *np, | |
750 | const char *propname) | |
751 | { | |
752 | return of_property_count_elems_of_size(np, propname, sizeof(u32)); | |
753 | } | |
754 | ||
755 | /** | |
756 | * of_property_count_u64_elems - Count the number of u64 elements in a property | |
757 | * | |
758 | * @np: device node from which the property value is to be read. | |
759 | * @propname: name of the property to be searched. | |
760 | * | |
761 | * Search for a property in a device node and count the number of u64 elements | |
762 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
763 | * not exist or its length does not match a multiple of u64 and -ENODATA if the | |
764 | * property does not have a value. | |
765 | */ | |
766 | static inline int of_property_count_u64_elems(const struct device_node *np, | |
767 | const char *propname) | |
768 | { | |
769 | return of_property_count_elems_of_size(np, propname, sizeof(u64)); | |
770 | } | |
771 | ||
a87fa1d8 GL |
772 | /** |
773 | * of_property_read_string_array() - Read an array of strings from a multiple | |
774 | * strings property. | |
775 | * @np: device node from which the property value is to be read. | |
776 | * @propname: name of the property to be searched. | |
777 | * @out_strs: output array of string pointers. | |
778 | * @sz: number of array elements to read. | |
779 | * | |
780 | * Search for a property in a device tree node and retrieve a list of | |
781 | * terminated string values (pointer to data, not a copy) in that property. | |
782 | * | |
783 | * If @out_strs is NULL, the number of strings in the property is returned. | |
784 | */ | |
fe99c707 | 785 | static inline int of_property_read_string_array(const struct device_node *np, |
a87fa1d8 GL |
786 | const char *propname, const char **out_strs, |
787 | size_t sz) | |
788 | { | |
789 | return of_property_read_string_helper(np, propname, out_strs, sz, 0); | |
790 | } | |
791 | ||
792 | /** | |
793 | * of_property_count_strings() - Find and return the number of strings from a | |
794 | * multiple strings property. | |
795 | * @np: device node from which the property value is to be read. | |
796 | * @propname: name of the property to be searched. | |
797 | * | |
798 | * Search for a property in a device tree node and retrieve the number of null | |
799 | * terminated string contain in it. Returns the number of strings on | |
800 | * success, -EINVAL if the property does not exist, -ENODATA if property | |
801 | * does not have a value, and -EILSEQ if the string is not null-terminated | |
802 | * within the length of the property data. | |
803 | */ | |
fe99c707 | 804 | static inline int of_property_count_strings(const struct device_node *np, |
a87fa1d8 GL |
805 | const char *propname) |
806 | { | |
807 | return of_property_read_string_helper(np, propname, NULL, 0, 0); | |
808 | } | |
809 | ||
810 | /** | |
811 | * of_property_read_string_index() - Find and read a string from a multiple | |
812 | * strings property. | |
813 | * @np: device node from which the property value is to be read. | |
814 | * @propname: name of the property to be searched. | |
815 | * @index: index of the string in the list of strings | |
816 | * @out_string: pointer to null terminated return string, modified only if | |
817 | * return value is 0. | |
818 | * | |
819 | * Search for a property in a device tree node and retrieve a null | |
820 | * terminated string value (pointer to data, not a copy) in the list of strings | |
821 | * contained in that property. | |
822 | * Returns 0 on success, -EINVAL if the property does not exist, -ENODATA if | |
823 | * property does not have a value, and -EILSEQ if the string is not | |
824 | * null-terminated within the length of the property data. | |
825 | * | |
826 | * The out_string pointer is modified only if a valid string can be decoded. | |
827 | */ | |
fe99c707 | 828 | static inline int of_property_read_string_index(const struct device_node *np, |
a87fa1d8 GL |
829 | const char *propname, |
830 | int index, const char **output) | |
831 | { | |
832 | int rc = of_property_read_string_helper(np, propname, output, 1, index); | |
833 | return rc < 0 ? rc : 0; | |
834 | } | |
835 | ||
fa4d34cc JCPV |
836 | /** |
837 | * of_property_read_bool - Findfrom a property | |
838 | * @np: device node from which the property value is to be read. | |
839 | * @propname: name of the property to be searched. | |
840 | * | |
841 | * Search for a property in a device node. | |
31712c98 | 842 | * Returns true if the property exists false otherwise. |
fa4d34cc JCPV |
843 | */ |
844 | static inline bool of_property_read_bool(const struct device_node *np, | |
845 | const char *propname) | |
846 | { | |
847 | struct property *prop = of_find_property(np, propname, NULL); | |
848 | ||
849 | return prop ? true : false; | |
850 | } | |
851 | ||
be193249 VK |
852 | static inline int of_property_read_u8(const struct device_node *np, |
853 | const char *propname, | |
854 | u8 *out_value) | |
855 | { | |
856 | return of_property_read_u8_array(np, propname, out_value, 1); | |
857 | } | |
858 | ||
859 | static inline int of_property_read_u16(const struct device_node *np, | |
860 | const char *propname, | |
861 | u16 *out_value) | |
862 | { | |
863 | return of_property_read_u16_array(np, propname, out_value, 1); | |
864 | } | |
865 | ||
b98c0239 | 866 | static inline int of_property_read_u32(const struct device_node *np, |
aac285c6 | 867 | const char *propname, |
b98c0239 SG |
868 | u32 *out_value) |
869 | { | |
870 | return of_property_read_u32_array(np, propname, out_value, 1); | |
871 | } | |
872 | ||
e7a00e42 SR |
873 | static inline int of_property_read_s32(const struct device_node *np, |
874 | const char *propname, | |
875 | s32 *out_value) | |
876 | { | |
877 | return of_property_read_u32(np, propname, (u32*) out_value); | |
878 | } | |
879 | ||
2adfffa2 SAS |
880 | #define of_property_for_each_u32(np, propname, prop, p, u) \ |
881 | for (prop = of_find_property(np, propname, NULL), \ | |
882 | p = of_prop_next_u32(prop, NULL, &u); \ | |
883 | p; \ | |
884 | p = of_prop_next_u32(prop, p, &u)) | |
885 | ||
886 | #define of_property_for_each_string(np, propname, prop, s) \ | |
887 | for (prop = of_find_property(np, propname, NULL), \ | |
888 | s = of_prop_next_string(prop, NULL); \ | |
889 | s; \ | |
890 | s = of_prop_next_string(prop, s)) | |
891 | ||
662372e4 RH |
892 | #define for_each_node_by_name(dn, name) \ |
893 | for (dn = of_find_node_by_name(NULL, name); dn; \ | |
894 | dn = of_find_node_by_name(dn, name)) | |
895 | #define for_each_node_by_type(dn, type) \ | |
896 | for (dn = of_find_node_by_type(NULL, type); dn; \ | |
897 | dn = of_find_node_by_type(dn, type)) | |
898 | #define for_each_compatible_node(dn, type, compatible) \ | |
899 | for (dn = of_find_compatible_node(NULL, type, compatible); dn; \ | |
900 | dn = of_find_compatible_node(dn, type, compatible)) | |
901 | #define for_each_matching_node(dn, matches) \ | |
902 | for (dn = of_find_matching_node(NULL, matches); dn; \ | |
903 | dn = of_find_matching_node(dn, matches)) | |
904 | #define for_each_matching_node_and_match(dn, matches, match) \ | |
905 | for (dn = of_find_matching_node_and_match(NULL, matches, match); \ | |
906 | dn; dn = of_find_matching_node_and_match(dn, matches, match)) | |
907 | ||
908 | #define for_each_child_of_node(parent, child) \ | |
909 | for (child = of_get_next_child(parent, NULL); child != NULL; \ | |
910 | child = of_get_next_child(parent, child)) | |
911 | #define for_each_available_child_of_node(parent, child) \ | |
912 | for (child = of_get_next_available_child(parent, NULL); child != NULL; \ | |
913 | child = of_get_next_available_child(parent, child)) | |
914 | ||
915 | #define for_each_node_with_property(dn, prop_name) \ | |
916 | for (dn = of_find_node_with_property(NULL, prop_name); dn; \ | |
917 | dn = of_find_node_with_property(dn, prop_name)) | |
918 | ||
919 | static inline int of_get_child_count(const struct device_node *np) | |
920 | { | |
921 | struct device_node *child; | |
922 | int num = 0; | |
923 | ||
924 | for_each_child_of_node(np, child) | |
925 | num++; | |
926 | ||
927 | return num; | |
928 | } | |
929 | ||
930 | static inline int of_get_available_child_count(const struct device_node *np) | |
931 | { | |
932 | struct device_node *child; | |
933 | int num = 0; | |
934 | ||
935 | for_each_available_child_of_node(np, child) | |
936 | num++; | |
937 | ||
938 | return num; | |
939 | } | |
940 | ||
71f50c6d | 941 | #if defined(CONFIG_OF) && !defined(MODULE) |
54196ccb RH |
942 | #define _OF_DECLARE(table, name, compat, fn, fn_type) \ |
943 | static const struct of_device_id __of_table_##name \ | |
944 | __used __section(__##table##_of_table) \ | |
945 | = { .compatible = compat, \ | |
946 | .data = (fn == (fn_type)NULL) ? fn : fn } | |
947 | #else | |
5f563585 | 948 | #define _OF_DECLARE(table, name, compat, fn, fn_type) \ |
54196ccb RH |
949 | static const struct of_device_id __of_table_##name \ |
950 | __attribute__((unused)) \ | |
951 | = { .compatible = compat, \ | |
952 | .data = (fn == (fn_type)NULL) ? fn : fn } | |
953 | #endif | |
954 | ||
955 | typedef int (*of_init_fn_2)(struct device_node *, struct device_node *); | |
956 | typedef void (*of_init_fn_1)(struct device_node *); | |
957 | ||
958 | #define OF_DECLARE_1(table, name, compat, fn) \ | |
959 | _OF_DECLARE(table, name, compat, fn, of_init_fn_1) | |
960 | #define OF_DECLARE_2(table, name, compat, fn) \ | |
961 | _OF_DECLARE(table, name, compat, fn, of_init_fn_2) | |
962 | ||
201c910b PA |
963 | /** |
964 | * struct of_changeset_entry - Holds a changeset entry | |
965 | * | |
966 | * @node: list_head for the log list | |
967 | * @action: notifier action | |
968 | * @np: pointer to the device node affected | |
969 | * @prop: pointer to the property affected | |
970 | * @old_prop: hold a pointer to the original property | |
971 | * | |
972 | * Every modification of the device tree during a changeset | |
973 | * is held in a list of of_changeset_entry structures. | |
974 | * That way we can recover from a partial application, or we can | |
975 | * revert the changeset | |
976 | */ | |
977 | struct of_changeset_entry { | |
978 | struct list_head node; | |
979 | unsigned long action; | |
980 | struct device_node *np; | |
981 | struct property *prop; | |
982 | struct property *old_prop; | |
983 | }; | |
984 | ||
985 | /** | |
986 | * struct of_changeset - changeset tracker structure | |
987 | * | |
988 | * @entries: list_head for the changeset entries | |
989 | * | |
990 | * changesets are a convenient way to apply bulk changes to the | |
991 | * live tree. In case of an error, changes are rolled-back. | |
992 | * changesets live on after initial application, and if not | |
993 | * destroyed after use, they can be reverted in one single call. | |
994 | */ | |
995 | struct of_changeset { | |
996 | struct list_head entries; | |
997 | }; | |
998 | ||
b53a2340 PA |
999 | enum of_reconfig_change { |
1000 | OF_RECONFIG_NO_CHANGE = 0, | |
1001 | OF_RECONFIG_CHANGE_ADD, | |
1002 | OF_RECONFIG_CHANGE_REMOVE, | |
1003 | }; | |
1004 | ||
201c910b | 1005 | #ifdef CONFIG_OF_DYNAMIC |
f6892d19 GL |
1006 | extern int of_reconfig_notifier_register(struct notifier_block *); |
1007 | extern int of_reconfig_notifier_unregister(struct notifier_block *); | |
f5242e5a GL |
1008 | extern int of_reconfig_notify(unsigned long, struct of_reconfig_data *rd); |
1009 | extern int of_reconfig_get_state_change(unsigned long action, | |
1010 | struct of_reconfig_data *arg); | |
f6892d19 | 1011 | |
201c910b PA |
1012 | extern void of_changeset_init(struct of_changeset *ocs); |
1013 | extern void of_changeset_destroy(struct of_changeset *ocs); | |
1014 | extern int of_changeset_apply(struct of_changeset *ocs); | |
1015 | extern int of_changeset_revert(struct of_changeset *ocs); | |
1016 | extern int of_changeset_action(struct of_changeset *ocs, | |
1017 | unsigned long action, struct device_node *np, | |
1018 | struct property *prop); | |
1019 | ||
1020 | static inline int of_changeset_attach_node(struct of_changeset *ocs, | |
1021 | struct device_node *np) | |
1022 | { | |
1023 | return of_changeset_action(ocs, OF_RECONFIG_ATTACH_NODE, np, NULL); | |
1024 | } | |
1025 | ||
1026 | static inline int of_changeset_detach_node(struct of_changeset *ocs, | |
1027 | struct device_node *np) | |
1028 | { | |
1029 | return of_changeset_action(ocs, OF_RECONFIG_DETACH_NODE, np, NULL); | |
1030 | } | |
1031 | ||
1032 | static inline int of_changeset_add_property(struct of_changeset *ocs, | |
1033 | struct device_node *np, struct property *prop) | |
1034 | { | |
1035 | return of_changeset_action(ocs, OF_RECONFIG_ADD_PROPERTY, np, prop); | |
1036 | } | |
1037 | ||
1038 | static inline int of_changeset_remove_property(struct of_changeset *ocs, | |
1039 | struct device_node *np, struct property *prop) | |
1040 | { | |
1041 | return of_changeset_action(ocs, OF_RECONFIG_REMOVE_PROPERTY, np, prop); | |
1042 | } | |
1043 | ||
1044 | static inline int of_changeset_update_property(struct of_changeset *ocs, | |
1045 | struct device_node *np, struct property *prop) | |
1046 | { | |
1047 | return of_changeset_action(ocs, OF_RECONFIG_UPDATE_PROPERTY, np, prop); | |
1048 | } | |
f6892d19 GL |
1049 | #else /* CONFIG_OF_DYNAMIC */ |
1050 | static inline int of_reconfig_notifier_register(struct notifier_block *nb) | |
1051 | { | |
1052 | return -EINVAL; | |
1053 | } | |
1054 | static inline int of_reconfig_notifier_unregister(struct notifier_block *nb) | |
1055 | { | |
1056 | return -EINVAL; | |
1057 | } | |
f5242e5a GL |
1058 | static inline int of_reconfig_notify(unsigned long action, |
1059 | struct of_reconfig_data *arg) | |
f6892d19 GL |
1060 | { |
1061 | return -EINVAL; | |
1062 | } | |
f5242e5a GL |
1063 | static inline int of_reconfig_get_state_change(unsigned long action, |
1064 | struct of_reconfig_data *arg) | |
f6892d19 GL |
1065 | { |
1066 | return -EINVAL; | |
1067 | } | |
1068 | #endif /* CONFIG_OF_DYNAMIC */ | |
201c910b | 1069 | |
7941b27b PA |
1070 | /* CONFIG_OF_RESOLVE api */ |
1071 | extern int of_resolve_phandles(struct device_node *tree); | |
1072 | ||
a4b4e046 | 1073 | /** |
8f73110f | 1074 | * of_device_is_system_power_controller - Tells if system-power-controller is found for device_node |
a4b4e046 RP |
1075 | * @np: Pointer to the given device_node |
1076 | * | |
1077 | * return true if present false otherwise | |
1078 | */ | |
8f73110f | 1079 | static inline bool of_device_is_system_power_controller(const struct device_node *np) |
a4b4e046 | 1080 | { |
8f73110f | 1081 | return of_property_read_bool(np, "system-power-controller"); |
a4b4e046 RP |
1082 | } |
1083 | ||
7518b589 PA |
1084 | /** |
1085 | * Overlay support | |
1086 | */ | |
1087 | ||
1088 | #ifdef CONFIG_OF_OVERLAY | |
1089 | ||
1090 | /* ID based overlays; the API for external users */ | |
1091 | int of_overlay_create(struct device_node *tree); | |
1092 | int of_overlay_destroy(int id); | |
1093 | int of_overlay_destroy_all(void); | |
1094 | ||
1095 | #else | |
1096 | ||
1097 | static inline int of_overlay_create(struct device_node *tree) | |
1098 | { | |
1099 | return -ENOTSUPP; | |
1100 | } | |
1101 | ||
1102 | static inline int of_overlay_destroy(int id) | |
1103 | { | |
1104 | return -ENOTSUPP; | |
1105 | } | |
1106 | ||
1107 | static inline int of_overlay_destroy_all(void) | |
1108 | { | |
1109 | return -ENOTSUPP; | |
1110 | } | |
1111 | ||
1112 | #endif | |
1113 | ||
76c1ce78 | 1114 | #endif /* _LINUX_OF_H */ |