]>
Commit | Line | Data |
---|---|---|
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; |
a752ee56 | 114 | extern struct device_node *of_stdout; |
d6d3c4e6 | 115 | extern raw_spinlock_t devtree_lock; |
41f88009 | 116 | |
3bcbaf6e SAS |
117 | static inline bool of_have_populated_dt(void) |
118 | { | |
465aac6d | 119 | return of_allnodes != NULL; |
3bcbaf6e SAS |
120 | } |
121 | ||
035ebefc AS |
122 | static inline bool of_node_is_root(const struct device_node *node) |
123 | { | |
124 | return node && (node->parent == NULL); | |
125 | } | |
126 | ||
50436312 GL |
127 | static inline int of_node_check_flag(struct device_node *n, unsigned long flag) |
128 | { | |
129 | return test_bit(flag, &n->_flags); | |
130 | } | |
131 | ||
c6e126de PM |
132 | static inline int of_node_test_and_set_flag(struct device_node *n, |
133 | unsigned long flag) | |
134 | { | |
135 | return test_and_set_bit(flag, &n->_flags); | |
136 | } | |
137 | ||
50436312 GL |
138 | static inline void of_node_set_flag(struct device_node *n, unsigned long flag) |
139 | { | |
140 | set_bit(flag, &n->_flags); | |
141 | } | |
142 | ||
588453c6 PA |
143 | static inline void of_node_clear_flag(struct device_node *n, unsigned long flag) |
144 | { | |
145 | clear_bit(flag, &n->_flags); | |
146 | } | |
147 | ||
148 | static inline int of_property_check_flag(struct property *p, unsigned long flag) | |
149 | { | |
150 | return test_bit(flag, &p->_flags); | |
151 | } | |
152 | ||
153 | static inline void of_property_set_flag(struct property *p, unsigned long flag) | |
154 | { | |
155 | set_bit(flag, &p->_flags); | |
156 | } | |
157 | ||
158 | static inline void of_property_clear_flag(struct property *p, unsigned long flag) | |
159 | { | |
160 | clear_bit(flag, &p->_flags); | |
161 | } | |
162 | ||
e91edcf5 GL |
163 | extern struct device_node *of_find_all_nodes(struct device_node *prev); |
164 | ||
b6caf2ad | 165 | /* |
3d6b8828 | 166 | * OF address retrieval & translation |
b6caf2ad GL |
167 | */ |
168 | ||
169 | /* Helper to read a big number; size is in cells (not bytes) */ | |
2e89e685 | 170 | static inline u64 of_read_number(const __be32 *cell, int size) |
b6caf2ad GL |
171 | { |
172 | u64 r = 0; | |
173 | while (size--) | |
2e89e685 | 174 | r = (r << 32) | be32_to_cpu(*(cell++)); |
b6caf2ad GL |
175 | return r; |
176 | } | |
177 | ||
178 | /* Like of_read_number, but we want an unsigned long result */ | |
2e89e685 | 179 | static inline unsigned long of_read_ulong(const __be32 *cell, int size) |
b6caf2ad | 180 | { |
2be09cb9 GL |
181 | /* toss away upper bits if unsigned long is smaller than u64 */ |
182 | return of_read_number(cell, size); | |
b6caf2ad | 183 | } |
b6caf2ad | 184 | |
b5b4bb3f | 185 | #if defined(CONFIG_SPARC) |
76c1ce78 | 186 | #include <asm/prom.h> |
b5b4bb3f | 187 | #endif |
76c1ce78 | 188 | |
7c7b60cb GL |
189 | /* Default #address and #size cells. Allow arch asm/prom.h to override */ |
190 | #if !defined(OF_ROOT_NODE_ADDR_CELLS_DEFAULT) | |
191 | #define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1 | |
192 | #define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1 | |
193 | #endif | |
194 | ||
195 | /* Default string compare functions, Allow arch asm/prom.h to override */ | |
196 | #if !defined(of_compat_cmp) | |
1976152f | 197 | #define of_compat_cmp(s1, s2, l) strcasecmp((s1), (s2)) |
7c7b60cb GL |
198 | #define of_prop_cmp(s1, s2) strcmp((s1), (s2)) |
199 | #define of_node_cmp(s1, s2) strcasecmp((s1), (s2)) | |
200 | #endif | |
201 | ||
76c1ce78 SR |
202 | /* flag descriptions */ |
203 | #define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */ | |
204 | #define OF_DETACHED 2 /* node has been detached from the device tree */ | |
c6e126de | 205 | #define OF_POPULATED 3 /* device already created for the node */ |
75f353b6 | 206 | #define OF_POPULATED_BUS 4 /* of_platform_populate recursed to children of this node */ |
76c1ce78 | 207 | |
61e955db GL |
208 | #define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags) |
209 | #define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags) | |
210 | ||
76c1ce78 SR |
211 | #define OF_BAD_ADDR ((u64)-1) |
212 | ||
c0a05bf0 | 213 | static inline const char *of_node_full_name(const struct device_node *np) |
74a7f084 GL |
214 | { |
215 | return np ? np->full_name : "<no-node>"; | |
216 | } | |
217 | ||
75b57ecf GL |
218 | #define for_each_of_allnodes(dn) \ |
219 | for (dn = of_allnodes; dn; dn = dn->allnext) | |
76c1ce78 SR |
220 | extern struct device_node *of_find_node_by_name(struct device_node *from, |
221 | const char *name); | |
76c1ce78 SR |
222 | extern struct device_node *of_find_node_by_type(struct device_node *from, |
223 | const char *type); | |
76c1ce78 SR |
224 | extern struct device_node *of_find_compatible_node(struct device_node *from, |
225 | const char *type, const char *compat); | |
50c8af4c SW |
226 | extern struct device_node *of_find_matching_node_and_match( |
227 | struct device_node *from, | |
228 | const struct of_device_id *matches, | |
229 | const struct of_device_id **match); | |
662372e4 | 230 | |
76c1ce78 SR |
231 | extern struct device_node *of_find_node_by_path(const char *path); |
232 | extern struct device_node *of_find_node_by_phandle(phandle handle); | |
233 | extern struct device_node *of_get_parent(const struct device_node *node); | |
f4eb0107 | 234 | extern struct device_node *of_get_next_parent(struct device_node *node); |
76c1ce78 SR |
235 | extern struct device_node *of_get_next_child(const struct device_node *node, |
236 | struct device_node *prev); | |
3296193d TT |
237 | extern struct device_node *of_get_next_available_child( |
238 | const struct device_node *node, struct device_node *prev); | |
239 | ||
9c19761a SK |
240 | extern struct device_node *of_get_child_by_name(const struct device_node *node, |
241 | const char *name); | |
954e04b9 | 242 | |
a3e31b45 SH |
243 | /* cache lookup */ |
244 | extern struct device_node *of_find_next_cache_node(const struct device_node *); | |
1e291b14 ME |
245 | extern struct device_node *of_find_node_with_property( |
246 | struct device_node *from, const char *prop_name); | |
1e291b14 | 247 | |
76c1ce78 SR |
248 | extern struct property *of_find_property(const struct device_node *np, |
249 | const char *name, | |
250 | int *lenp); | |
ad54a0cf HS |
251 | extern int of_property_count_elems_of_size(const struct device_node *np, |
252 | const char *propname, int elem_size); | |
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; | |
259092a3 | 325 | struct property *old_prop; |
1cf3d8b3 NF |
326 | }; |
327 | ||
328 | extern int of_reconfig_notifier_register(struct notifier_block *); | |
329 | extern int of_reconfig_notifier_unregister(struct notifier_block *); | |
330 | extern int of_reconfig_notify(unsigned long, void *); | |
331 | ||
332 | extern int of_attach_node(struct device_node *); | |
333 | extern int of_detach_node(struct device_node *); | |
fcdeb7fe | 334 | |
3a1e362e | 335 | #define of_match_ptr(_ptr) (_ptr) |
c541adc6 SW |
336 | |
337 | /* | |
338 | * struct property *prop; | |
339 | * const __be32 *p; | |
340 | * u32 u; | |
341 | * | |
342 | * of_property_for_each_u32(np, "propname", prop, p, u) | |
343 | * printk("U32 value: %x\n", u); | |
344 | */ | |
345 | const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur, | |
346 | u32 *pu); | |
c541adc6 SW |
347 | /* |
348 | * struct property *prop; | |
349 | * const char *s; | |
350 | * | |
351 | * of_property_for_each_string(np, "propname", prop, s) | |
352 | * printk("String value: %s\n", s); | |
353 | */ | |
354 | const char *of_prop_next_string(struct property *prop, const char *cur); | |
c541adc6 | 355 | |
3482f2c5 | 356 | bool of_console_check(struct device_node *dn, char *name, int index); |
5c19e952 | 357 | |
b98c0239 | 358 | #else /* CONFIG_OF */ |
3bcbaf6e | 359 | |
4c358e15 | 360 | static inline const char* of_node_full_name(const struct device_node *np) |
74a7f084 GL |
361 | { |
362 | return "<no-node>"; | |
363 | } | |
364 | ||
1cc44f43 PU |
365 | static inline struct device_node *of_find_node_by_name(struct device_node *from, |
366 | const char *name) | |
367 | { | |
368 | return NULL; | |
369 | } | |
370 | ||
662372e4 RH |
371 | static inline struct device_node *of_find_node_by_type(struct device_node *from, |
372 | const char *type) | |
066ec1dd AS |
373 | { |
374 | return NULL; | |
375 | } | |
376 | ||
662372e4 RH |
377 | static inline struct device_node *of_find_matching_node_and_match( |
378 | struct device_node *from, | |
379 | const struct of_device_id *matches, | |
380 | const struct of_device_id **match) | |
3bcbaf6e | 381 | { |
662372e4 | 382 | return NULL; |
3bcbaf6e SAS |
383 | } |
384 | ||
20cd477c AS |
385 | static inline struct device_node *of_find_node_by_path(const char *path) |
386 | { | |
387 | return NULL; | |
388 | } | |
389 | ||
662372e4 | 390 | static inline struct device_node *of_get_parent(const struct device_node *node) |
00b2c76a | 391 | { |
662372e4 | 392 | return NULL; |
00b2c76a DH |
393 | } |
394 | ||
662372e4 RH |
395 | static inline struct device_node *of_get_next_child( |
396 | const struct device_node *node, struct device_node *prev) | |
397 | { | |
398 | return NULL; | |
399 | } | |
aba3dfff | 400 | |
662372e4 RH |
401 | static inline struct device_node *of_get_next_available_child( |
402 | const struct device_node *node, struct device_node *prev) | |
403 | { | |
404 | return NULL; | |
405 | } | |
f6f0747e | 406 | |
662372e4 RH |
407 | static inline struct device_node *of_find_node_with_property( |
408 | struct device_node *from, const char *prop_name) | |
25c040c9 OJ |
409 | { |
410 | return NULL; | |
411 | } | |
412 | ||
662372e4 | 413 | static inline bool of_have_populated_dt(void) |
183f1d0c | 414 | { |
662372e4 | 415 | return false; |
183f1d0c DA |
416 | } |
417 | ||
662372e4 RH |
418 | static inline struct device_node *of_get_child_by_name( |
419 | const struct device_node *node, | |
420 | const char *name) | |
954e04b9 | 421 | { |
662372e4 | 422 | return NULL; |
954e04b9 BW |
423 | } |
424 | ||
36a0904e RN |
425 | static inline int of_device_is_compatible(const struct device_node *device, |
426 | const char *name) | |
427 | { | |
428 | return 0; | |
429 | } | |
430 | ||
d7195696 RH |
431 | static inline int of_device_is_available(const struct device_node *device) |
432 | { | |
433 | return 0; | |
434 | } | |
435 | ||
aba3dfff SW |
436 | static inline struct property *of_find_property(const struct device_node *np, |
437 | const char *name, | |
438 | int *lenp) | |
439 | { | |
440 | return NULL; | |
441 | } | |
442 | ||
2261cc62 SG |
443 | static inline struct device_node *of_find_compatible_node( |
444 | struct device_node *from, | |
445 | const char *type, | |
446 | const char *compat) | |
447 | { | |
448 | return NULL; | |
449 | } | |
450 | ||
ad54a0cf HS |
451 | static inline int of_property_count_elems_of_size(const struct device_node *np, |
452 | const char *propname, int elem_size) | |
453 | { | |
454 | return -ENOSYS; | |
455 | } | |
456 | ||
3daf3726 TP |
457 | static inline int of_property_read_u32_index(const struct device_node *np, |
458 | const char *propname, u32 index, u32 *out_value) | |
459 | { | |
460 | return -ENOSYS; | |
461 | } | |
462 | ||
be193249 VK |
463 | static inline int of_property_read_u8_array(const struct device_node *np, |
464 | const char *propname, u8 *out_values, size_t sz) | |
465 | { | |
466 | return -ENOSYS; | |
467 | } | |
468 | ||
469 | static inline int of_property_read_u16_array(const struct device_node *np, | |
470 | const char *propname, u16 *out_values, size_t sz) | |
471 | { | |
472 | return -ENOSYS; | |
473 | } | |
474 | ||
b98c0239 | 475 | static inline int of_property_read_u32_array(const struct device_node *np, |
aac285c6 JI |
476 | const char *propname, |
477 | u32 *out_values, size_t sz) | |
b98c0239 SG |
478 | { |
479 | return -ENOSYS; | |
480 | } | |
481 | ||
482 | static inline int of_property_read_string(struct device_node *np, | |
aac285c6 JI |
483 | const char *propname, |
484 | const char **out_string) | |
b98c0239 SG |
485 | { |
486 | return -ENOSYS; | |
487 | } | |
488 | ||
4fcd15a0 BC |
489 | static inline int of_property_read_string_index(struct device_node *np, |
490 | const char *propname, int index, | |
491 | const char **out_string) | |
492 | { | |
493 | return -ENOSYS; | |
494 | } | |
495 | ||
496 | static inline int of_property_count_strings(struct device_node *np, | |
497 | const char *propname) | |
498 | { | |
499 | return -ENOSYS; | |
500 | } | |
501 | ||
89272b8c SW |
502 | static inline const void *of_get_property(const struct device_node *node, |
503 | const char *name, | |
504 | int *lenp) | |
505 | { | |
506 | return NULL; | |
507 | } | |
508 | ||
183912d3 SH |
509 | static inline struct device_node *of_get_cpu_node(int cpu, |
510 | unsigned int *thread) | |
511 | { | |
512 | return NULL; | |
513 | } | |
514 | ||
4cd7f7a3 JI |
515 | static inline int of_property_read_u64(const struct device_node *np, |
516 | const char *propname, u64 *out_value) | |
517 | { | |
518 | return -ENOSYS; | |
519 | } | |
520 | ||
bd3d5500 TR |
521 | static inline int of_property_match_string(struct device_node *np, |
522 | const char *propname, | |
523 | const char *string) | |
524 | { | |
525 | return -ENOSYS; | |
526 | } | |
527 | ||
b8fbdc42 | 528 | static inline struct device_node *of_parse_phandle(const struct device_node *np, |
36a0904e RN |
529 | const char *phandle_name, |
530 | int index) | |
531 | { | |
532 | return NULL; | |
533 | } | |
534 | ||
e05e5070 TR |
535 | static inline int of_parse_phandle_with_args(struct device_node *np, |
536 | const char *list_name, | |
537 | const char *cells_name, | |
538 | int index, | |
539 | struct of_phandle_args *out_args) | |
540 | { | |
541 | return -ENOSYS; | |
542 | } | |
543 | ||
035fd948 SW |
544 | static inline int of_parse_phandle_with_fixed_args(const struct device_node *np, |
545 | const char *list_name, int cells_count, int index, | |
546 | struct of_phandle_args *out_args) | |
547 | { | |
548 | return -ENOSYS; | |
549 | } | |
550 | ||
bd69f73f GL |
551 | static inline int of_count_phandle_with_args(struct device_node *np, |
552 | const char *list_name, | |
553 | const char *cells_name) | |
554 | { | |
555 | return -ENOSYS; | |
556 | } | |
557 | ||
ed5f886d NF |
558 | static inline int of_alias_get_id(struct device_node *np, const char *stem) |
559 | { | |
560 | return -ENOSYS; | |
561 | } | |
562 | ||
50e07f88 SW |
563 | static inline int of_machine_is_compatible(const char *compat) |
564 | { | |
565 | return 0; | |
566 | } | |
567 | ||
3482f2c5 | 568 | static inline bool of_console_check(const struct device_node *dn, const char *name, int index) |
5c19e952 | 569 | { |
3482f2c5 | 570 | return false; |
5c19e952 SH |
571 | } |
572 | ||
2adfffa2 SAS |
573 | static inline const __be32 *of_prop_next_u32(struct property *prop, |
574 | const __be32 *cur, u32 *pu) | |
575 | { | |
576 | return NULL; | |
577 | } | |
578 | ||
579 | static inline const char *of_prop_next_string(struct property *prop, | |
580 | const char *cur) | |
581 | { | |
582 | return NULL; | |
583 | } | |
584 | ||
3a1e362e | 585 | #define of_match_ptr(_ptr) NULL |
5762c205 | 586 | #define of_match_node(_matches, _node) NULL |
9dfbf207 | 587 | #endif /* CONFIG_OF */ |
b98c0239 | 588 | |
0c3f061c RH |
589 | #if defined(CONFIG_OF) && defined(CONFIG_NUMA) |
590 | extern int of_node_to_nid(struct device_node *np); | |
591 | #else | |
592 | static inline int of_node_to_nid(struct device_node *device) { return 0; } | |
5ca4db61 PM |
593 | #endif |
594 | ||
662372e4 RH |
595 | static inline struct device_node *of_find_matching_node( |
596 | struct device_node *from, | |
597 | const struct of_device_id *matches) | |
598 | { | |
599 | return of_find_matching_node_and_match(from, matches, NULL); | |
600 | } | |
601 | ||
ad54a0cf HS |
602 | /** |
603 | * of_property_count_u8_elems - Count the number of u8 elements in a property | |
604 | * | |
605 | * @np: device node from which the property value is to be read. | |
606 | * @propname: name of the property to be searched. | |
607 | * | |
608 | * Search for a property in a device node and count the number of u8 elements | |
609 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
610 | * not exist or its length does not match a multiple of u8 and -ENODATA if the | |
611 | * property does not have a value. | |
612 | */ | |
613 | static inline int of_property_count_u8_elems(const struct device_node *np, | |
614 | const char *propname) | |
615 | { | |
616 | return of_property_count_elems_of_size(np, propname, sizeof(u8)); | |
617 | } | |
618 | ||
619 | /** | |
620 | * of_property_count_u16_elems - Count the number of u16 elements in a property | |
621 | * | |
622 | * @np: device node from which the property value is to be read. | |
623 | * @propname: name of the property to be searched. | |
624 | * | |
625 | * Search for a property in a device node and count the number of u16 elements | |
626 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
627 | * not exist or its length does not match a multiple of u16 and -ENODATA if the | |
628 | * property does not have a value. | |
629 | */ | |
630 | static inline int of_property_count_u16_elems(const struct device_node *np, | |
631 | const char *propname) | |
632 | { | |
633 | return of_property_count_elems_of_size(np, propname, sizeof(u16)); | |
634 | } | |
635 | ||
636 | /** | |
637 | * of_property_count_u32_elems - Count the number of u32 elements in a property | |
638 | * | |
639 | * @np: device node from which the property value is to be read. | |
640 | * @propname: name of the property to be searched. | |
641 | * | |
642 | * Search for a property in a device node and count the number of u32 elements | |
643 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
644 | * not exist or its length does not match a multiple of u32 and -ENODATA if the | |
645 | * property does not have a value. | |
646 | */ | |
647 | static inline int of_property_count_u32_elems(const struct device_node *np, | |
648 | const char *propname) | |
649 | { | |
650 | return of_property_count_elems_of_size(np, propname, sizeof(u32)); | |
651 | } | |
652 | ||
653 | /** | |
654 | * of_property_count_u64_elems - Count the number of u64 elements in a property | |
655 | * | |
656 | * @np: device node from which the property value is to be read. | |
657 | * @propname: name of the property to be searched. | |
658 | * | |
659 | * Search for a property in a device node and count the number of u64 elements | |
660 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
661 | * not exist or its length does not match a multiple of u64 and -ENODATA if the | |
662 | * property does not have a value. | |
663 | */ | |
664 | static inline int of_property_count_u64_elems(const struct device_node *np, | |
665 | const char *propname) | |
666 | { | |
667 | return of_property_count_elems_of_size(np, propname, sizeof(u64)); | |
668 | } | |
669 | ||
fa4d34cc JCPV |
670 | /** |
671 | * of_property_read_bool - Findfrom a property | |
672 | * @np: device node from which the property value is to be read. | |
673 | * @propname: name of the property to be searched. | |
674 | * | |
675 | * Search for a property in a device node. | |
676 | * Returns true if the property exist false otherwise. | |
677 | */ | |
678 | static inline bool of_property_read_bool(const struct device_node *np, | |
679 | const char *propname) | |
680 | { | |
681 | struct property *prop = of_find_property(np, propname, NULL); | |
682 | ||
683 | return prop ? true : false; | |
684 | } | |
685 | ||
be193249 VK |
686 | static inline int of_property_read_u8(const struct device_node *np, |
687 | const char *propname, | |
688 | u8 *out_value) | |
689 | { | |
690 | return of_property_read_u8_array(np, propname, out_value, 1); | |
691 | } | |
692 | ||
693 | static inline int of_property_read_u16(const struct device_node *np, | |
694 | const char *propname, | |
695 | u16 *out_value) | |
696 | { | |
697 | return of_property_read_u16_array(np, propname, out_value, 1); | |
698 | } | |
699 | ||
b98c0239 | 700 | static inline int of_property_read_u32(const struct device_node *np, |
aac285c6 | 701 | const char *propname, |
b98c0239 SG |
702 | u32 *out_value) |
703 | { | |
704 | return of_property_read_u32_array(np, propname, out_value, 1); | |
705 | } | |
706 | ||
2adfffa2 SAS |
707 | #define of_property_for_each_u32(np, propname, prop, p, u) \ |
708 | for (prop = of_find_property(np, propname, NULL), \ | |
709 | p = of_prop_next_u32(prop, NULL, &u); \ | |
710 | p; \ | |
711 | p = of_prop_next_u32(prop, p, &u)) | |
712 | ||
713 | #define of_property_for_each_string(np, propname, prop, s) \ | |
714 | for (prop = of_find_property(np, propname, NULL), \ | |
715 | s = of_prop_next_string(prop, NULL); \ | |
716 | s; \ | |
717 | s = of_prop_next_string(prop, s)) | |
718 | ||
662372e4 RH |
719 | #define for_each_node_by_name(dn, name) \ |
720 | for (dn = of_find_node_by_name(NULL, name); dn; \ | |
721 | dn = of_find_node_by_name(dn, name)) | |
722 | #define for_each_node_by_type(dn, type) \ | |
723 | for (dn = of_find_node_by_type(NULL, type); dn; \ | |
724 | dn = of_find_node_by_type(dn, type)) | |
725 | #define for_each_compatible_node(dn, type, compatible) \ | |
726 | for (dn = of_find_compatible_node(NULL, type, compatible); dn; \ | |
727 | dn = of_find_compatible_node(dn, type, compatible)) | |
728 | #define for_each_matching_node(dn, matches) \ | |
729 | for (dn = of_find_matching_node(NULL, matches); dn; \ | |
730 | dn = of_find_matching_node(dn, matches)) | |
731 | #define for_each_matching_node_and_match(dn, matches, match) \ | |
732 | for (dn = of_find_matching_node_and_match(NULL, matches, match); \ | |
733 | dn; dn = of_find_matching_node_and_match(dn, matches, match)) | |
734 | ||
735 | #define for_each_child_of_node(parent, child) \ | |
736 | for (child = of_get_next_child(parent, NULL); child != NULL; \ | |
737 | child = of_get_next_child(parent, child)) | |
738 | #define for_each_available_child_of_node(parent, child) \ | |
739 | for (child = of_get_next_available_child(parent, NULL); child != NULL; \ | |
740 | child = of_get_next_available_child(parent, child)) | |
741 | ||
742 | #define for_each_node_with_property(dn, prop_name) \ | |
743 | for (dn = of_find_node_with_property(NULL, prop_name); dn; \ | |
744 | dn = of_find_node_with_property(dn, prop_name)) | |
745 | ||
746 | static inline int of_get_child_count(const struct device_node *np) | |
747 | { | |
748 | struct device_node *child; | |
749 | int num = 0; | |
750 | ||
751 | for_each_child_of_node(np, child) | |
752 | num++; | |
753 | ||
754 | return num; | |
755 | } | |
756 | ||
757 | static inline int of_get_available_child_count(const struct device_node *np) | |
758 | { | |
759 | struct device_node *child; | |
760 | int num = 0; | |
761 | ||
762 | for_each_available_child_of_node(np, child) | |
763 | num++; | |
764 | ||
765 | return num; | |
766 | } | |
767 | ||
54196ccb RH |
768 | #ifdef CONFIG_OF |
769 | #define _OF_DECLARE(table, name, compat, fn, fn_type) \ | |
770 | static const struct of_device_id __of_table_##name \ | |
771 | __used __section(__##table##_of_table) \ | |
772 | = { .compatible = compat, \ | |
773 | .data = (fn == (fn_type)NULL) ? fn : fn } | |
774 | #else | |
775 | #define _OF_DECLARE(table, name, compat, fn, fn_type) \ | |
776 | static const struct of_device_id __of_table_##name \ | |
777 | __attribute__((unused)) \ | |
778 | = { .compatible = compat, \ | |
779 | .data = (fn == (fn_type)NULL) ? fn : fn } | |
780 | #endif | |
781 | ||
782 | typedef int (*of_init_fn_2)(struct device_node *, struct device_node *); | |
783 | typedef void (*of_init_fn_1)(struct device_node *); | |
784 | ||
785 | #define OF_DECLARE_1(table, name, compat, fn) \ | |
786 | _OF_DECLARE(table, name, compat, fn, of_init_fn_1) | |
787 | #define OF_DECLARE_2(table, name, compat, fn) \ | |
788 | _OF_DECLARE(table, name, compat, fn, of_init_fn_2) | |
789 | ||
201c910b PA |
790 | /** |
791 | * struct of_changeset_entry - Holds a changeset entry | |
792 | * | |
793 | * @node: list_head for the log list | |
794 | * @action: notifier action | |
795 | * @np: pointer to the device node affected | |
796 | * @prop: pointer to the property affected | |
797 | * @old_prop: hold a pointer to the original property | |
798 | * | |
799 | * Every modification of the device tree during a changeset | |
800 | * is held in a list of of_changeset_entry structures. | |
801 | * That way we can recover from a partial application, or we can | |
802 | * revert the changeset | |
803 | */ | |
804 | struct of_changeset_entry { | |
805 | struct list_head node; | |
806 | unsigned long action; | |
807 | struct device_node *np; | |
808 | struct property *prop; | |
809 | struct property *old_prop; | |
810 | }; | |
811 | ||
812 | /** | |
813 | * struct of_changeset - changeset tracker structure | |
814 | * | |
815 | * @entries: list_head for the changeset entries | |
816 | * | |
817 | * changesets are a convenient way to apply bulk changes to the | |
818 | * live tree. In case of an error, changes are rolled-back. | |
819 | * changesets live on after initial application, and if not | |
820 | * destroyed after use, they can be reverted in one single call. | |
821 | */ | |
822 | struct of_changeset { | |
823 | struct list_head entries; | |
824 | }; | |
825 | ||
826 | #ifdef CONFIG_OF_DYNAMIC | |
827 | extern void of_changeset_init(struct of_changeset *ocs); | |
828 | extern void of_changeset_destroy(struct of_changeset *ocs); | |
829 | extern int of_changeset_apply(struct of_changeset *ocs); | |
830 | extern int of_changeset_revert(struct of_changeset *ocs); | |
831 | extern int of_changeset_action(struct of_changeset *ocs, | |
832 | unsigned long action, struct device_node *np, | |
833 | struct property *prop); | |
834 | ||
835 | static inline int of_changeset_attach_node(struct of_changeset *ocs, | |
836 | struct device_node *np) | |
837 | { | |
838 | return of_changeset_action(ocs, OF_RECONFIG_ATTACH_NODE, np, NULL); | |
839 | } | |
840 | ||
841 | static inline int of_changeset_detach_node(struct of_changeset *ocs, | |
842 | struct device_node *np) | |
843 | { | |
844 | return of_changeset_action(ocs, OF_RECONFIG_DETACH_NODE, np, NULL); | |
845 | } | |
846 | ||
847 | static inline int of_changeset_add_property(struct of_changeset *ocs, | |
848 | struct device_node *np, struct property *prop) | |
849 | { | |
850 | return of_changeset_action(ocs, OF_RECONFIG_ADD_PROPERTY, np, prop); | |
851 | } | |
852 | ||
853 | static inline int of_changeset_remove_property(struct of_changeset *ocs, | |
854 | struct device_node *np, struct property *prop) | |
855 | { | |
856 | return of_changeset_action(ocs, OF_RECONFIG_REMOVE_PROPERTY, np, prop); | |
857 | } | |
858 | ||
859 | static inline int of_changeset_update_property(struct of_changeset *ocs, | |
860 | struct device_node *np, struct property *prop) | |
861 | { | |
862 | return of_changeset_action(ocs, OF_RECONFIG_UPDATE_PROPERTY, np, prop); | |
863 | } | |
864 | #endif | |
865 | ||
7941b27b PA |
866 | /* CONFIG_OF_RESOLVE api */ |
867 | extern int of_resolve_phandles(struct device_node *tree); | |
868 | ||
76c1ce78 | 869 | #endif /* _LINUX_OF_H */ |