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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 | ||
74e1fbb1 JR |
78 | struct of_phandle_iterator { |
79 | /* Common iterator information */ | |
80 | const char *cells_name; | |
81 | int cell_count; | |
82 | const struct device_node *parent; | |
83 | ||
84 | /* List size information */ | |
85 | const __be32 *list_end; | |
86 | const __be32 *phandle_end; | |
87 | ||
88 | /* Current position state */ | |
89 | const __be32 *cur; | |
90 | uint32_t cur_count; | |
91 | phandle phandle; | |
92 | struct device_node *node; | |
93 | }; | |
94 | ||
f5242e5a GL |
95 | struct of_reconfig_data { |
96 | struct device_node *dn; | |
97 | struct property *prop; | |
98 | struct property *old_prop; | |
99 | }; | |
100 | ||
0829f6d1 PA |
101 | /* initialize a node */ |
102 | extern struct kobj_type of_node_ktype; | |
103 | static inline void of_node_init(struct device_node *node) | |
104 | { | |
105 | kobject_init(&node->kobj, &of_node_ktype); | |
8a0662d9 | 106 | node->fwnode.type = FWNODE_OF; |
0829f6d1 PA |
107 | } |
108 | ||
109 | /* true when node is initialized */ | |
110 | static inline int of_node_is_initialized(struct device_node *node) | |
111 | { | |
112 | return node && node->kobj.state_initialized; | |
113 | } | |
114 | ||
115 | /* true when node is attached (i.e. present on sysfs) */ | |
116 | static inline int of_node_is_attached(struct device_node *node) | |
117 | { | |
118 | return node && node->kobj.state_in_sysfs; | |
119 | } | |
120 | ||
0f22dd39 GL |
121 | #ifdef CONFIG_OF_DYNAMIC |
122 | extern struct device_node *of_node_get(struct device_node *node); | |
123 | extern void of_node_put(struct device_node *node); | |
124 | #else /* CONFIG_OF_DYNAMIC */ | |
3ecdd051 RH |
125 | /* Dummy ref counting routines - to be implemented later */ |
126 | static inline struct device_node *of_node_get(struct device_node *node) | |
127 | { | |
128 | return node; | |
129 | } | |
0f22dd39 GL |
130 | static inline void of_node_put(struct device_node *node) { } |
131 | #endif /* !CONFIG_OF_DYNAMIC */ | |
3ecdd051 | 132 | |
41f88009 | 133 | /* Pointer for first entry in chain of all nodes. */ |
5063e25a | 134 | extern struct device_node *of_root; |
fc0bdae4 | 135 | extern struct device_node *of_chosen; |
611cad72 | 136 | extern struct device_node *of_aliases; |
a752ee56 | 137 | extern struct device_node *of_stdout; |
d6d3c4e6 | 138 | extern raw_spinlock_t devtree_lock; |
41f88009 | 139 | |
391b459d PA |
140 | /* flag descriptions (need to be visible even when !CONFIG_OF) */ |
141 | #define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */ | |
142 | #define OF_DETACHED 2 /* node has been detached from the device tree */ | |
143 | #define OF_POPULATED 3 /* device already created for the node */ | |
144 | #define OF_POPULATED_BUS 4 /* of_platform_populate recursed to children of this node */ | |
145 | ||
b1d06b60 GR |
146 | #define OF_BAD_ADDR ((u64)-1) |
147 | ||
6d09dc6b | 148 | #ifdef CONFIG_OF |
194ec936 SH |
149 | void of_core_init(void); |
150 | ||
8a0662d9 RW |
151 | static inline bool is_of_node(struct fwnode_handle *fwnode) |
152 | { | |
0224a4a3 | 153 | return !IS_ERR_OR_NULL(fwnode) && fwnode->type == FWNODE_OF; |
8a0662d9 RW |
154 | } |
155 | ||
c181fb3e | 156 | static inline struct device_node *to_of_node(struct fwnode_handle *fwnode) |
8a0662d9 | 157 | { |
4bf01181 AS |
158 | return is_of_node(fwnode) ? |
159 | container_of(fwnode, struct device_node, fwnode) : NULL; | |
8a0662d9 RW |
160 | } |
161 | ||
3bcbaf6e SAS |
162 | static inline bool of_have_populated_dt(void) |
163 | { | |
5063e25a | 164 | return of_root != NULL; |
3bcbaf6e SAS |
165 | } |
166 | ||
035ebefc AS |
167 | static inline bool of_node_is_root(const struct device_node *node) |
168 | { | |
169 | return node && (node->parent == NULL); | |
170 | } | |
171 | ||
50436312 GL |
172 | static inline int of_node_check_flag(struct device_node *n, unsigned long flag) |
173 | { | |
174 | return test_bit(flag, &n->_flags); | |
175 | } | |
176 | ||
c6e126de PM |
177 | static inline int of_node_test_and_set_flag(struct device_node *n, |
178 | unsigned long flag) | |
179 | { | |
180 | return test_and_set_bit(flag, &n->_flags); | |
181 | } | |
182 | ||
50436312 GL |
183 | static inline void of_node_set_flag(struct device_node *n, unsigned long flag) |
184 | { | |
185 | set_bit(flag, &n->_flags); | |
186 | } | |
187 | ||
588453c6 PA |
188 | static inline void of_node_clear_flag(struct device_node *n, unsigned long flag) |
189 | { | |
190 | clear_bit(flag, &n->_flags); | |
191 | } | |
192 | ||
193 | static inline int of_property_check_flag(struct property *p, unsigned long flag) | |
194 | { | |
195 | return test_bit(flag, &p->_flags); | |
196 | } | |
197 | ||
198 | static inline void of_property_set_flag(struct property *p, unsigned long flag) | |
199 | { | |
200 | set_bit(flag, &p->_flags); | |
201 | } | |
202 | ||
203 | static inline void of_property_clear_flag(struct property *p, unsigned long flag) | |
204 | { | |
205 | clear_bit(flag, &p->_flags); | |
206 | } | |
207 | ||
5063e25a | 208 | extern struct device_node *__of_find_all_nodes(struct device_node *prev); |
e91edcf5 GL |
209 | extern struct device_node *of_find_all_nodes(struct device_node *prev); |
210 | ||
b6caf2ad | 211 | /* |
3d6b8828 | 212 | * OF address retrieval & translation |
b6caf2ad GL |
213 | */ |
214 | ||
215 | /* Helper to read a big number; size is in cells (not bytes) */ | |
2e89e685 | 216 | static inline u64 of_read_number(const __be32 *cell, int size) |
b6caf2ad GL |
217 | { |
218 | u64 r = 0; | |
219 | while (size--) | |
2e89e685 | 220 | r = (r << 32) | be32_to_cpu(*(cell++)); |
b6caf2ad GL |
221 | return r; |
222 | } | |
223 | ||
224 | /* Like of_read_number, but we want an unsigned long result */ | |
2e89e685 | 225 | static inline unsigned long of_read_ulong(const __be32 *cell, int size) |
b6caf2ad | 226 | { |
2be09cb9 GL |
227 | /* toss away upper bits if unsigned long is smaller than u64 */ |
228 | return of_read_number(cell, size); | |
b6caf2ad | 229 | } |
b6caf2ad | 230 | |
b5b4bb3f | 231 | #if defined(CONFIG_SPARC) |
76c1ce78 | 232 | #include <asm/prom.h> |
b5b4bb3f | 233 | #endif |
76c1ce78 | 234 | |
7c7b60cb GL |
235 | /* Default #address and #size cells. Allow arch asm/prom.h to override */ |
236 | #if !defined(OF_ROOT_NODE_ADDR_CELLS_DEFAULT) | |
237 | #define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1 | |
238 | #define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1 | |
239 | #endif | |
240 | ||
61e955db GL |
241 | #define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags) |
242 | #define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags) | |
243 | ||
c0a05bf0 | 244 | static inline const char *of_node_full_name(const struct device_node *np) |
74a7f084 GL |
245 | { |
246 | return np ? np->full_name : "<no-node>"; | |
247 | } | |
248 | ||
5063e25a GL |
249 | #define for_each_of_allnodes_from(from, dn) \ |
250 | for (dn = __of_find_all_nodes(from); dn; dn = __of_find_all_nodes(dn)) | |
251 | #define for_each_of_allnodes(dn) for_each_of_allnodes_from(NULL, dn) | |
76c1ce78 SR |
252 | extern struct device_node *of_find_node_by_name(struct device_node *from, |
253 | const char *name); | |
76c1ce78 SR |
254 | extern struct device_node *of_find_node_by_type(struct device_node *from, |
255 | const char *type); | |
76c1ce78 SR |
256 | extern struct device_node *of_find_compatible_node(struct device_node *from, |
257 | const char *type, const char *compat); | |
50c8af4c SW |
258 | extern struct device_node *of_find_matching_node_and_match( |
259 | struct device_node *from, | |
260 | const struct of_device_id *matches, | |
261 | const struct of_device_id **match); | |
662372e4 | 262 | |
75c28c09 LL |
263 | extern struct device_node *of_find_node_opts_by_path(const char *path, |
264 | const char **opts); | |
265 | static inline struct device_node *of_find_node_by_path(const char *path) | |
266 | { | |
267 | return of_find_node_opts_by_path(path, NULL); | |
268 | } | |
269 | ||
76c1ce78 SR |
270 | extern struct device_node *of_find_node_by_phandle(phandle handle); |
271 | extern struct device_node *of_get_parent(const struct device_node *node); | |
f4eb0107 | 272 | extern struct device_node *of_get_next_parent(struct device_node *node); |
76c1ce78 SR |
273 | extern struct device_node *of_get_next_child(const struct device_node *node, |
274 | struct device_node *prev); | |
3296193d TT |
275 | extern struct device_node *of_get_next_available_child( |
276 | const struct device_node *node, struct device_node *prev); | |
277 | ||
9c19761a SK |
278 | extern struct device_node *of_get_child_by_name(const struct device_node *node, |
279 | const char *name); | |
954e04b9 | 280 | |
a3e31b45 SH |
281 | /* cache lookup */ |
282 | extern struct device_node *of_find_next_cache_node(const struct device_node *); | |
5fa23530 | 283 | extern int of_find_last_cache_level(unsigned int cpu); |
1e291b14 ME |
284 | extern struct device_node *of_find_node_with_property( |
285 | struct device_node *from, const char *prop_name); | |
1e291b14 | 286 | |
76c1ce78 SR |
287 | extern struct property *of_find_property(const struct device_node *np, |
288 | const char *name, | |
289 | int *lenp); | |
ad54a0cf HS |
290 | extern int of_property_count_elems_of_size(const struct device_node *np, |
291 | const char *propname, int elem_size); | |
3daf3726 TP |
292 | extern int of_property_read_u32_index(const struct device_node *np, |
293 | const char *propname, | |
294 | u32 index, u32 *out_value); | |
a67e9472 RF |
295 | extern int of_property_read_variable_u8_array(const struct device_node *np, |
296 | const char *propname, u8 *out_values, | |
297 | size_t sz_min, size_t sz_max); | |
298 | extern int of_property_read_variable_u16_array(const struct device_node *np, | |
299 | const char *propname, u16 *out_values, | |
300 | size_t sz_min, size_t sz_max); | |
301 | extern int of_property_read_variable_u32_array(const struct device_node *np, | |
302 | const char *propname, | |
303 | u32 *out_values, | |
304 | size_t sz_min, | |
305 | size_t sz_max); | |
4cd7f7a3 JI |
306 | extern int of_property_read_u64(const struct device_node *np, |
307 | const char *propname, u64 *out_value); | |
a67e9472 RF |
308 | extern int of_property_read_variable_u64_array(const struct device_node *np, |
309 | const char *propname, | |
310 | u64 *out_values, | |
311 | size_t sz_min, | |
312 | size_t sz_max); | |
0e373639 | 313 | |
fe99c707 | 314 | extern int of_property_read_string(const struct device_node *np, |
aac285c6 JI |
315 | const char *propname, |
316 | const char **out_string); | |
fe99c707 | 317 | extern int of_property_match_string(const struct device_node *np, |
7aff0fe3 GL |
318 | const char *propname, |
319 | const char *string); | |
fe99c707 | 320 | extern int of_property_read_string_helper(const struct device_node *np, |
a87fa1d8 GL |
321 | const char *propname, |
322 | const char **out_strs, size_t sz, int index); | |
76c1ce78 SR |
323 | extern int of_device_is_compatible(const struct device_node *device, |
324 | const char *); | |
b9c13fe3 BH |
325 | extern int of_device_compatible_match(struct device_node *device, |
326 | const char *const *compat); | |
53a4ab96 | 327 | extern bool of_device_is_available(const struct device_node *device); |
37786c7f | 328 | extern bool of_device_is_big_endian(const struct device_node *device); |
76c1ce78 SR |
329 | extern const void *of_get_property(const struct device_node *node, |
330 | const char *name, | |
331 | int *lenp); | |
183912d3 | 332 | extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread); |
8af0da93 DA |
333 | #define for_each_property_of_node(dn, pp) \ |
334 | for (pp = dn->properties; pp != NULL; pp = pp->next) | |
611cad72 | 335 | |
76c1ce78 SR |
336 | extern int of_n_addr_cells(struct device_node *np); |
337 | extern int of_n_size_cells(struct device_node *np); | |
283029d1 GL |
338 | extern const struct of_device_id *of_match_node( |
339 | const struct of_device_id *matches, const struct device_node *node); | |
3f07af49 | 340 | extern int of_modalias_node(struct device_node *node, char *modalias, int len); |
624cfca5 | 341 | extern void of_print_phandle_args(const char *msg, const struct of_phandle_args *args); |
b8fbdc42 | 342 | extern struct device_node *of_parse_phandle(const struct device_node *np, |
739649c5 GL |
343 | const char *phandle_name, |
344 | int index); | |
93c667ca | 345 | extern int of_parse_phandle_with_args(const struct device_node *np, |
64b60e09 | 346 | const char *list_name, const char *cells_name, int index, |
15c9a0ac | 347 | struct of_phandle_args *out_args); |
035fd948 SW |
348 | extern int of_parse_phandle_with_fixed_args(const struct device_node *np, |
349 | const char *list_name, int cells_count, int index, | |
350 | struct of_phandle_args *out_args); | |
bd69f73f GL |
351 | extern int of_count_phandle_with_args(const struct device_node *np, |
352 | const char *list_name, const char *cells_name); | |
76c1ce78 | 353 | |
74e1fbb1 JR |
354 | /* phandle iterator functions */ |
355 | extern int of_phandle_iterator_init(struct of_phandle_iterator *it, | |
356 | const struct device_node *np, | |
357 | const char *list_name, | |
358 | const char *cells_name, | |
359 | int cell_count); | |
360 | ||
cd209b41 | 361 | extern int of_phandle_iterator_next(struct of_phandle_iterator *it); |
abdaa77b JR |
362 | extern int of_phandle_iterator_args(struct of_phandle_iterator *it, |
363 | uint32_t *args, | |
364 | int size); | |
cd209b41 | 365 | |
611cad72 SG |
366 | extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align)); |
367 | extern int of_alias_get_id(struct device_node *np, const char *stem); | |
351d224f | 368 | extern int of_alias_get_highest_id(const char *stem); |
611cad72 | 369 | |
21b082ec GL |
370 | extern int of_machine_is_compatible(const char *compat); |
371 | ||
79d1c712 NF |
372 | extern int of_add_property(struct device_node *np, struct property *prop); |
373 | extern int of_remove_property(struct device_node *np, struct property *prop); | |
374 | extern int of_update_property(struct device_node *np, struct property *newprop); | |
21b082ec | 375 | |
fcdeb7fe | 376 | /* For updating the device tree at runtime */ |
1cf3d8b3 NF |
377 | #define OF_RECONFIG_ATTACH_NODE 0x0001 |
378 | #define OF_RECONFIG_DETACH_NODE 0x0002 | |
379 | #define OF_RECONFIG_ADD_PROPERTY 0x0003 | |
380 | #define OF_RECONFIG_REMOVE_PROPERTY 0x0004 | |
381 | #define OF_RECONFIG_UPDATE_PROPERTY 0x0005 | |
382 | ||
1cf3d8b3 NF |
383 | extern int of_attach_node(struct device_node *); |
384 | extern int of_detach_node(struct device_node *); | |
fcdeb7fe | 385 | |
3a1e362e | 386 | #define of_match_ptr(_ptr) (_ptr) |
c541adc6 | 387 | |
a67e9472 RF |
388 | /** |
389 | * of_property_read_u8_array - Find and read an array of u8 from a property. | |
390 | * | |
391 | * @np: device node from which the property value is to be read. | |
392 | * @propname: name of the property to be searched. | |
393 | * @out_values: pointer to return value, modified only if return value is 0. | |
394 | * @sz: number of array elements to read | |
395 | * | |
396 | * Search for a property in a device node and read 8-bit value(s) from | |
397 | * it. Returns 0 on success, -EINVAL if the property does not exist, | |
398 | * -ENODATA if property does not have a value, and -EOVERFLOW if the | |
399 | * property data isn't large enough. | |
400 | * | |
401 | * dts entry of array should be like: | |
402 | * property = /bits/ 8 <0x50 0x60 0x70>; | |
403 | * | |
404 | * The out_values is modified only if a valid u8 value can be decoded. | |
405 | */ | |
406 | static inline int of_property_read_u8_array(const struct device_node *np, | |
407 | const char *propname, | |
408 | u8 *out_values, size_t sz) | |
409 | { | |
410 | int ret = of_property_read_variable_u8_array(np, propname, out_values, | |
411 | sz, 0); | |
412 | if (ret >= 0) | |
413 | return 0; | |
414 | else | |
415 | return ret; | |
416 | } | |
417 | ||
418 | /** | |
419 | * of_property_read_u16_array - Find and read an array of u16 from a property. | |
420 | * | |
421 | * @np: device node from which the property value is to be read. | |
422 | * @propname: name of the property to be searched. | |
423 | * @out_values: pointer to return value, modified only if return value is 0. | |
424 | * @sz: number of array elements to read | |
425 | * | |
426 | * Search for a property in a device node and read 16-bit value(s) from | |
427 | * it. Returns 0 on success, -EINVAL if the property does not exist, | |
428 | * -ENODATA if property does not have a value, and -EOVERFLOW if the | |
429 | * property data isn't large enough. | |
430 | * | |
431 | * dts entry of array should be like: | |
432 | * property = /bits/ 16 <0x5000 0x6000 0x7000>; | |
433 | * | |
434 | * The out_values is modified only if a valid u16 value can be decoded. | |
435 | */ | |
436 | static inline int of_property_read_u16_array(const struct device_node *np, | |
437 | const char *propname, | |
438 | u16 *out_values, size_t sz) | |
439 | { | |
440 | int ret = of_property_read_variable_u16_array(np, propname, out_values, | |
441 | sz, 0); | |
442 | if (ret >= 0) | |
443 | return 0; | |
444 | else | |
445 | return ret; | |
446 | } | |
447 | ||
448 | /** | |
449 | * of_property_read_u32_array - Find and read an array of 32 bit integers | |
450 | * from a property. | |
451 | * | |
452 | * @np: device node from which the property value is to be read. | |
453 | * @propname: name of the property to be searched. | |
454 | * @out_values: pointer to return value, modified only if return value is 0. | |
455 | * @sz: number of array elements to read | |
456 | * | |
457 | * Search for a property in a device node and read 32-bit value(s) from | |
458 | * it. Returns 0 on success, -EINVAL if the property does not exist, | |
459 | * -ENODATA if property does not have a value, and -EOVERFLOW if the | |
460 | * property data isn't large enough. | |
461 | * | |
462 | * The out_values is modified only if a valid u32 value can be decoded. | |
463 | */ | |
464 | static inline int of_property_read_u32_array(const struct device_node *np, | |
465 | const char *propname, | |
466 | u32 *out_values, size_t sz) | |
467 | { | |
468 | int ret = of_property_read_variable_u32_array(np, propname, out_values, | |
469 | sz, 0); | |
470 | if (ret >= 0) | |
471 | return 0; | |
472 | else | |
473 | return ret; | |
474 | } | |
475 | ||
476 | /** | |
477 | * of_property_read_u64_array - Find and read an array of 64 bit integers | |
478 | * from a property. | |
479 | * | |
480 | * @np: device node from which the property value is to be read. | |
481 | * @propname: name of the property to be searched. | |
482 | * @out_values: pointer to return value, modified only if return value is 0. | |
483 | * @sz: number of array elements to read | |
484 | * | |
485 | * Search for a property in a device node and read 64-bit value(s) from | |
486 | * it. Returns 0 on success, -EINVAL if the property does not exist, | |
487 | * -ENODATA if property does not have a value, and -EOVERFLOW if the | |
488 | * property data isn't large enough. | |
489 | * | |
490 | * The out_values is modified only if a valid u64 value can be decoded. | |
491 | */ | |
492 | static inline int of_property_read_u64_array(const struct device_node *np, | |
493 | const char *propname, | |
494 | u64 *out_values, size_t sz) | |
495 | { | |
496 | int ret = of_property_read_variable_u64_array(np, propname, out_values, | |
497 | sz, 0); | |
498 | if (ret >= 0) | |
499 | return 0; | |
500 | else | |
501 | return ret; | |
502 | } | |
503 | ||
c541adc6 SW |
504 | /* |
505 | * struct property *prop; | |
506 | * const __be32 *p; | |
507 | * u32 u; | |
508 | * | |
509 | * of_property_for_each_u32(np, "propname", prop, p, u) | |
510 | * printk("U32 value: %x\n", u); | |
511 | */ | |
512 | const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur, | |
513 | u32 *pu); | |
c541adc6 SW |
514 | /* |
515 | * struct property *prop; | |
516 | * const char *s; | |
517 | * | |
518 | * of_property_for_each_string(np, "propname", prop, s) | |
519 | * printk("String value: %s\n", s); | |
520 | */ | |
521 | const char *of_prop_next_string(struct property *prop, const char *cur); | |
c541adc6 | 522 | |
3482f2c5 | 523 | bool of_console_check(struct device_node *dn, char *name, int index); |
5c19e952 | 524 | |
b98c0239 | 525 | #else /* CONFIG_OF */ |
3bcbaf6e | 526 | |
194ec936 SH |
527 | static inline void of_core_init(void) |
528 | { | |
529 | } | |
530 | ||
8a0662d9 RW |
531 | static inline bool is_of_node(struct fwnode_handle *fwnode) |
532 | { | |
533 | return false; | |
534 | } | |
535 | ||
c181fb3e | 536 | static inline struct device_node *to_of_node(struct fwnode_handle *fwnode) |
8a0662d9 RW |
537 | { |
538 | return NULL; | |
539 | } | |
540 | ||
4c358e15 | 541 | static inline const char* of_node_full_name(const struct device_node *np) |
74a7f084 GL |
542 | { |
543 | return "<no-node>"; | |
544 | } | |
545 | ||
1cc44f43 PU |
546 | static inline struct device_node *of_find_node_by_name(struct device_node *from, |
547 | const char *name) | |
548 | { | |
549 | return NULL; | |
550 | } | |
551 | ||
662372e4 RH |
552 | static inline struct device_node *of_find_node_by_type(struct device_node *from, |
553 | const char *type) | |
066ec1dd AS |
554 | { |
555 | return NULL; | |
556 | } | |
557 | ||
662372e4 RH |
558 | static inline struct device_node *of_find_matching_node_and_match( |
559 | struct device_node *from, | |
560 | const struct of_device_id *matches, | |
561 | const struct of_device_id **match) | |
3bcbaf6e | 562 | { |
662372e4 | 563 | return NULL; |
3bcbaf6e SAS |
564 | } |
565 | ||
20cd477c AS |
566 | static inline struct device_node *of_find_node_by_path(const char *path) |
567 | { | |
568 | return NULL; | |
569 | } | |
570 | ||
75c28c09 LL |
571 | static inline struct device_node *of_find_node_opts_by_path(const char *path, |
572 | const char **opts) | |
573 | { | |
574 | return NULL; | |
575 | } | |
576 | ||
ce16b9d2 SA |
577 | static inline struct device_node *of_find_node_by_phandle(phandle handle) |
578 | { | |
579 | return NULL; | |
580 | } | |
581 | ||
662372e4 | 582 | static inline struct device_node *of_get_parent(const struct device_node *node) |
00b2c76a | 583 | { |
662372e4 | 584 | return NULL; |
00b2c76a DH |
585 | } |
586 | ||
662372e4 RH |
587 | static inline struct device_node *of_get_next_child( |
588 | const struct device_node *node, struct device_node *prev) | |
589 | { | |
590 | return NULL; | |
591 | } | |
aba3dfff | 592 | |
662372e4 RH |
593 | static inline struct device_node *of_get_next_available_child( |
594 | const struct device_node *node, struct device_node *prev) | |
595 | { | |
596 | return NULL; | |
597 | } | |
f6f0747e | 598 | |
662372e4 RH |
599 | static inline struct device_node *of_find_node_with_property( |
600 | struct device_node *from, const char *prop_name) | |
25c040c9 OJ |
601 | { |
602 | return NULL; | |
603 | } | |
604 | ||
662372e4 | 605 | static inline bool of_have_populated_dt(void) |
183f1d0c | 606 | { |
662372e4 | 607 | return false; |
183f1d0c DA |
608 | } |
609 | ||
662372e4 RH |
610 | static inline struct device_node *of_get_child_by_name( |
611 | const struct device_node *node, | |
612 | const char *name) | |
954e04b9 | 613 | { |
662372e4 | 614 | return NULL; |
954e04b9 BW |
615 | } |
616 | ||
36a0904e RN |
617 | static inline int of_device_is_compatible(const struct device_node *device, |
618 | const char *name) | |
619 | { | |
620 | return 0; | |
621 | } | |
622 | ||
53a4ab96 | 623 | static inline bool of_device_is_available(const struct device_node *device) |
d7195696 | 624 | { |
53a4ab96 | 625 | return false; |
d7195696 RH |
626 | } |
627 | ||
37786c7f KC |
628 | static inline bool of_device_is_big_endian(const struct device_node *device) |
629 | { | |
630 | return false; | |
d7195696 RH |
631 | } |
632 | ||
aba3dfff SW |
633 | static inline struct property *of_find_property(const struct device_node *np, |
634 | const char *name, | |
635 | int *lenp) | |
636 | { | |
637 | return NULL; | |
638 | } | |
639 | ||
2261cc62 SG |
640 | static inline struct device_node *of_find_compatible_node( |
641 | struct device_node *from, | |
642 | const char *type, | |
643 | const char *compat) | |
644 | { | |
645 | return NULL; | |
646 | } | |
647 | ||
ad54a0cf HS |
648 | static inline int of_property_count_elems_of_size(const struct device_node *np, |
649 | const char *propname, int elem_size) | |
650 | { | |
651 | return -ENOSYS; | |
652 | } | |
653 | ||
3daf3726 TP |
654 | static inline int of_property_read_u32_index(const struct device_node *np, |
655 | const char *propname, u32 index, u32 *out_value) | |
656 | { | |
657 | return -ENOSYS; | |
658 | } | |
659 | ||
be193249 VK |
660 | static inline int of_property_read_u8_array(const struct device_node *np, |
661 | const char *propname, u8 *out_values, size_t sz) | |
662 | { | |
663 | return -ENOSYS; | |
664 | } | |
665 | ||
666 | static inline int of_property_read_u16_array(const struct device_node *np, | |
667 | const char *propname, u16 *out_values, size_t sz) | |
668 | { | |
669 | return -ENOSYS; | |
670 | } | |
671 | ||
b98c0239 | 672 | static inline int of_property_read_u32_array(const struct device_node *np, |
aac285c6 JI |
673 | const char *propname, |
674 | u32 *out_values, size_t sz) | |
b98c0239 SG |
675 | { |
676 | return -ENOSYS; | |
677 | } | |
678 | ||
b31384fa RW |
679 | static inline int of_property_read_u64_array(const struct device_node *np, |
680 | const char *propname, | |
681 | u64 *out_values, size_t sz) | |
682 | { | |
683 | return -ENOSYS; | |
684 | } | |
685 | ||
fe99c707 | 686 | static inline int of_property_read_string(const struct device_node *np, |
aac285c6 JI |
687 | const char *propname, |
688 | const char **out_string) | |
b98c0239 SG |
689 | { |
690 | return -ENOSYS; | |
691 | } | |
692 | ||
fe99c707 | 693 | static inline int of_property_read_string_helper(const struct device_node *np, |
a87fa1d8 GL |
694 | const char *propname, |
695 | const char **out_strs, size_t sz, int index) | |
4fcd15a0 BC |
696 | { |
697 | return -ENOSYS; | |
698 | } | |
699 | ||
89272b8c SW |
700 | static inline const void *of_get_property(const struct device_node *node, |
701 | const char *name, | |
702 | int *lenp) | |
703 | { | |
704 | return NULL; | |
705 | } | |
706 | ||
183912d3 SH |
707 | static inline struct device_node *of_get_cpu_node(int cpu, |
708 | unsigned int *thread) | |
709 | { | |
710 | return NULL; | |
711 | } | |
712 | ||
4cd7f7a3 JI |
713 | static inline int of_property_read_u64(const struct device_node *np, |
714 | const char *propname, u64 *out_value) | |
715 | { | |
716 | return -ENOSYS; | |
717 | } | |
718 | ||
fe99c707 | 719 | static inline int of_property_match_string(const struct device_node *np, |
bd3d5500 TR |
720 | const char *propname, |
721 | const char *string) | |
722 | { | |
723 | return -ENOSYS; | |
724 | } | |
725 | ||
b8fbdc42 | 726 | static inline struct device_node *of_parse_phandle(const struct device_node *np, |
36a0904e RN |
727 | const char *phandle_name, |
728 | int index) | |
729 | { | |
730 | return NULL; | |
731 | } | |
732 | ||
e93aeeae | 733 | static inline int of_parse_phandle_with_args(const struct device_node *np, |
e05e5070 TR |
734 | const char *list_name, |
735 | const char *cells_name, | |
736 | int index, | |
737 | struct of_phandle_args *out_args) | |
738 | { | |
739 | return -ENOSYS; | |
740 | } | |
741 | ||
035fd948 SW |
742 | static inline int of_parse_phandle_with_fixed_args(const struct device_node *np, |
743 | const char *list_name, int cells_count, int index, | |
744 | struct of_phandle_args *out_args) | |
745 | { | |
746 | return -ENOSYS; | |
747 | } | |
748 | ||
bd69f73f GL |
749 | static inline int of_count_phandle_with_args(struct device_node *np, |
750 | const char *list_name, | |
751 | const char *cells_name) | |
752 | { | |
753 | return -ENOSYS; | |
754 | } | |
755 | ||
74e1fbb1 JR |
756 | static inline int of_phandle_iterator_init(struct of_phandle_iterator *it, |
757 | const struct device_node *np, | |
758 | const char *list_name, | |
759 | const char *cells_name, | |
760 | int cell_count) | |
761 | { | |
762 | return -ENOSYS; | |
763 | } | |
764 | ||
cd209b41 JR |
765 | static inline int of_phandle_iterator_next(struct of_phandle_iterator *it) |
766 | { | |
767 | return -ENOSYS; | |
768 | } | |
769 | ||
abdaa77b JR |
770 | static inline int of_phandle_iterator_args(struct of_phandle_iterator *it, |
771 | uint32_t *args, | |
772 | int size) | |
773 | { | |
774 | return 0; | |
775 | } | |
776 | ||
ed5f886d NF |
777 | static inline int of_alias_get_id(struct device_node *np, const char *stem) |
778 | { | |
779 | return -ENOSYS; | |
780 | } | |
781 | ||
351d224f WS |
782 | static inline int of_alias_get_highest_id(const char *stem) |
783 | { | |
784 | return -ENOSYS; | |
785 | } | |
786 | ||
50e07f88 SW |
787 | static inline int of_machine_is_compatible(const char *compat) |
788 | { | |
789 | return 0; | |
790 | } | |
791 | ||
3482f2c5 | 792 | static inline bool of_console_check(const struct device_node *dn, const char *name, int index) |
5c19e952 | 793 | { |
3482f2c5 | 794 | return false; |
5c19e952 SH |
795 | } |
796 | ||
2adfffa2 SAS |
797 | static inline const __be32 *of_prop_next_u32(struct property *prop, |
798 | const __be32 *cur, u32 *pu) | |
799 | { | |
800 | return NULL; | |
801 | } | |
802 | ||
803 | static inline const char *of_prop_next_string(struct property *prop, | |
804 | const char *cur) | |
805 | { | |
806 | return NULL; | |
807 | } | |
808 | ||
0384e8c6 PA |
809 | static inline int of_node_check_flag(struct device_node *n, unsigned long flag) |
810 | { | |
811 | return 0; | |
812 | } | |
813 | ||
814 | static inline int of_node_test_and_set_flag(struct device_node *n, | |
815 | unsigned long flag) | |
816 | { | |
817 | return 0; | |
818 | } | |
819 | ||
820 | static inline void of_node_set_flag(struct device_node *n, unsigned long flag) | |
821 | { | |
822 | } | |
823 | ||
824 | static inline void of_node_clear_flag(struct device_node *n, unsigned long flag) | |
825 | { | |
826 | } | |
827 | ||
828 | static inline int of_property_check_flag(struct property *p, unsigned long flag) | |
829 | { | |
830 | return 0; | |
831 | } | |
832 | ||
833 | static inline void of_property_set_flag(struct property *p, unsigned long flag) | |
834 | { | |
835 | } | |
836 | ||
837 | static inline void of_property_clear_flag(struct property *p, unsigned long flag) | |
838 | { | |
839 | } | |
840 | ||
3a1e362e | 841 | #define of_match_ptr(_ptr) NULL |
5762c205 | 842 | #define of_match_node(_matches, _node) NULL |
9dfbf207 | 843 | #endif /* CONFIG_OF */ |
b98c0239 | 844 | |
613e9721 AT |
845 | /* Default string compare functions, Allow arch asm/prom.h to override */ |
846 | #if !defined(of_compat_cmp) | |
847 | #define of_compat_cmp(s1, s2, l) strcasecmp((s1), (s2)) | |
848 | #define of_prop_cmp(s1, s2) strcmp((s1), (s2)) | |
849 | #define of_node_cmp(s1, s2) strcasecmp((s1), (s2)) | |
850 | #endif | |
851 | ||
0c3f061c RH |
852 | #if defined(CONFIG_OF) && defined(CONFIG_NUMA) |
853 | extern int of_node_to_nid(struct device_node *np); | |
854 | #else | |
c8fff7bc KK |
855 | static inline int of_node_to_nid(struct device_node *device) |
856 | { | |
857 | return NUMA_NO_NODE; | |
858 | } | |
5ca4db61 PM |
859 | #endif |
860 | ||
298535c0 DD |
861 | #ifdef CONFIG_OF_NUMA |
862 | extern int of_numa_init(void); | |
863 | #else | |
864 | static inline int of_numa_init(void) | |
865 | { | |
866 | return -ENOSYS; | |
867 | } | |
868 | #endif | |
869 | ||
662372e4 RH |
870 | static inline struct device_node *of_find_matching_node( |
871 | struct device_node *from, | |
872 | const struct of_device_id *matches) | |
873 | { | |
874 | return of_find_matching_node_and_match(from, matches, NULL); | |
875 | } | |
876 | ||
ad54a0cf HS |
877 | /** |
878 | * of_property_count_u8_elems - Count the number of u8 elements in a property | |
879 | * | |
880 | * @np: device node from which the property value is to be read. | |
881 | * @propname: name of the property to be searched. | |
882 | * | |
883 | * Search for a property in a device node and count the number of u8 elements | |
884 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
885 | * not exist or its length does not match a multiple of u8 and -ENODATA if the | |
886 | * property does not have a value. | |
887 | */ | |
888 | static inline int of_property_count_u8_elems(const struct device_node *np, | |
889 | const char *propname) | |
890 | { | |
891 | return of_property_count_elems_of_size(np, propname, sizeof(u8)); | |
892 | } | |
893 | ||
894 | /** | |
895 | * of_property_count_u16_elems - Count the number of u16 elements in a property | |
896 | * | |
897 | * @np: device node from which the property value is to be read. | |
898 | * @propname: name of the property to be searched. | |
899 | * | |
900 | * Search for a property in a device node and count the number of u16 elements | |
901 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
902 | * not exist or its length does not match a multiple of u16 and -ENODATA if the | |
903 | * property does not have a value. | |
904 | */ | |
905 | static inline int of_property_count_u16_elems(const struct device_node *np, | |
906 | const char *propname) | |
907 | { | |
908 | return of_property_count_elems_of_size(np, propname, sizeof(u16)); | |
909 | } | |
910 | ||
911 | /** | |
912 | * of_property_count_u32_elems - Count the number of u32 elements in a property | |
913 | * | |
914 | * @np: device node from which the property value is to be read. | |
915 | * @propname: name of the property to be searched. | |
916 | * | |
917 | * Search for a property in a device node and count the number of u32 elements | |
918 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
919 | * not exist or its length does not match a multiple of u32 and -ENODATA if the | |
920 | * property does not have a value. | |
921 | */ | |
922 | static inline int of_property_count_u32_elems(const struct device_node *np, | |
923 | const char *propname) | |
924 | { | |
925 | return of_property_count_elems_of_size(np, propname, sizeof(u32)); | |
926 | } | |
927 | ||
928 | /** | |
929 | * of_property_count_u64_elems - Count the number of u64 elements in a property | |
930 | * | |
931 | * @np: device node from which the property value is to be read. | |
932 | * @propname: name of the property to be searched. | |
933 | * | |
934 | * Search for a property in a device node and count the number of u64 elements | |
935 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
936 | * not exist or its length does not match a multiple of u64 and -ENODATA if the | |
937 | * property does not have a value. | |
938 | */ | |
939 | static inline int of_property_count_u64_elems(const struct device_node *np, | |
940 | const char *propname) | |
941 | { | |
942 | return of_property_count_elems_of_size(np, propname, sizeof(u64)); | |
943 | } | |
944 | ||
a87fa1d8 GL |
945 | /** |
946 | * of_property_read_string_array() - Read an array of strings from a multiple | |
947 | * strings property. | |
948 | * @np: device node from which the property value is to be read. | |
949 | * @propname: name of the property to be searched. | |
950 | * @out_strs: output array of string pointers. | |
951 | * @sz: number of array elements to read. | |
952 | * | |
953 | * Search for a property in a device tree node and retrieve a list of | |
954 | * terminated string values (pointer to data, not a copy) in that property. | |
955 | * | |
956 | * If @out_strs is NULL, the number of strings in the property is returned. | |
957 | */ | |
fe99c707 | 958 | static inline int of_property_read_string_array(const struct device_node *np, |
a87fa1d8 GL |
959 | const char *propname, const char **out_strs, |
960 | size_t sz) | |
961 | { | |
962 | return of_property_read_string_helper(np, propname, out_strs, sz, 0); | |
963 | } | |
964 | ||
965 | /** | |
966 | * of_property_count_strings() - Find and return the number of strings from a | |
967 | * multiple strings property. | |
968 | * @np: device node from which the property value is to be read. | |
969 | * @propname: name of the property to be searched. | |
970 | * | |
971 | * Search for a property in a device tree node and retrieve the number of null | |
972 | * terminated string contain in it. Returns the number of strings on | |
973 | * success, -EINVAL if the property does not exist, -ENODATA if property | |
974 | * does not have a value, and -EILSEQ if the string is not null-terminated | |
975 | * within the length of the property data. | |
976 | */ | |
fe99c707 | 977 | static inline int of_property_count_strings(const struct device_node *np, |
a87fa1d8 GL |
978 | const char *propname) |
979 | { | |
980 | return of_property_read_string_helper(np, propname, NULL, 0, 0); | |
981 | } | |
982 | ||
983 | /** | |
984 | * of_property_read_string_index() - Find and read a string from a multiple | |
985 | * strings property. | |
986 | * @np: device node from which the property value is to be read. | |
987 | * @propname: name of the property to be searched. | |
988 | * @index: index of the string in the list of strings | |
989 | * @out_string: pointer to null terminated return string, modified only if | |
990 | * return value is 0. | |
991 | * | |
992 | * Search for a property in a device tree node and retrieve a null | |
993 | * terminated string value (pointer to data, not a copy) in the list of strings | |
994 | * contained in that property. | |
995 | * Returns 0 on success, -EINVAL if the property does not exist, -ENODATA if | |
996 | * property does not have a value, and -EILSEQ if the string is not | |
997 | * null-terminated within the length of the property data. | |
998 | * | |
999 | * The out_string pointer is modified only if a valid string can be decoded. | |
1000 | */ | |
fe99c707 | 1001 | static inline int of_property_read_string_index(const struct device_node *np, |
a87fa1d8 GL |
1002 | const char *propname, |
1003 | int index, const char **output) | |
1004 | { | |
1005 | int rc = of_property_read_string_helper(np, propname, output, 1, index); | |
1006 | return rc < 0 ? rc : 0; | |
1007 | } | |
1008 | ||
fa4d34cc JCPV |
1009 | /** |
1010 | * of_property_read_bool - Findfrom a property | |
1011 | * @np: device node from which the property value is to be read. | |
1012 | * @propname: name of the property to be searched. | |
1013 | * | |
1014 | * Search for a property in a device node. | |
31712c98 | 1015 | * Returns true if the property exists false otherwise. |
fa4d34cc JCPV |
1016 | */ |
1017 | static inline bool of_property_read_bool(const struct device_node *np, | |
1018 | const char *propname) | |
1019 | { | |
1020 | struct property *prop = of_find_property(np, propname, NULL); | |
1021 | ||
1022 | return prop ? true : false; | |
1023 | } | |
1024 | ||
be193249 VK |
1025 | static inline int of_property_read_u8(const struct device_node *np, |
1026 | const char *propname, | |
1027 | u8 *out_value) | |
1028 | { | |
1029 | return of_property_read_u8_array(np, propname, out_value, 1); | |
1030 | } | |
1031 | ||
1032 | static inline int of_property_read_u16(const struct device_node *np, | |
1033 | const char *propname, | |
1034 | u16 *out_value) | |
1035 | { | |
1036 | return of_property_read_u16_array(np, propname, out_value, 1); | |
1037 | } | |
1038 | ||
b98c0239 | 1039 | static inline int of_property_read_u32(const struct device_node *np, |
aac285c6 | 1040 | const char *propname, |
b98c0239 SG |
1041 | u32 *out_value) |
1042 | { | |
1043 | return of_property_read_u32_array(np, propname, out_value, 1); | |
1044 | } | |
1045 | ||
e7a00e42 SR |
1046 | static inline int of_property_read_s32(const struct device_node *np, |
1047 | const char *propname, | |
1048 | s32 *out_value) | |
1049 | { | |
1050 | return of_property_read_u32(np, propname, (u32*) out_value); | |
1051 | } | |
1052 | ||
f623ce95 JR |
1053 | #define of_for_each_phandle(it, err, np, ln, cn, cc) \ |
1054 | for (of_phandle_iterator_init((it), (np), (ln), (cn), (cc)), \ | |
1055 | err = of_phandle_iterator_next(it); \ | |
1056 | err == 0; \ | |
1057 | err = of_phandle_iterator_next(it)) | |
1058 | ||
2adfffa2 SAS |
1059 | #define of_property_for_each_u32(np, propname, prop, p, u) \ |
1060 | for (prop = of_find_property(np, propname, NULL), \ | |
1061 | p = of_prop_next_u32(prop, NULL, &u); \ | |
1062 | p; \ | |
1063 | p = of_prop_next_u32(prop, p, &u)) | |
1064 | ||
1065 | #define of_property_for_each_string(np, propname, prop, s) \ | |
1066 | for (prop = of_find_property(np, propname, NULL), \ | |
1067 | s = of_prop_next_string(prop, NULL); \ | |
1068 | s; \ | |
1069 | s = of_prop_next_string(prop, s)) | |
1070 | ||
662372e4 RH |
1071 | #define for_each_node_by_name(dn, name) \ |
1072 | for (dn = of_find_node_by_name(NULL, name); dn; \ | |
1073 | dn = of_find_node_by_name(dn, name)) | |
1074 | #define for_each_node_by_type(dn, type) \ | |
1075 | for (dn = of_find_node_by_type(NULL, type); dn; \ | |
1076 | dn = of_find_node_by_type(dn, type)) | |
1077 | #define for_each_compatible_node(dn, type, compatible) \ | |
1078 | for (dn = of_find_compatible_node(NULL, type, compatible); dn; \ | |
1079 | dn = of_find_compatible_node(dn, type, compatible)) | |
1080 | #define for_each_matching_node(dn, matches) \ | |
1081 | for (dn = of_find_matching_node(NULL, matches); dn; \ | |
1082 | dn = of_find_matching_node(dn, matches)) | |
1083 | #define for_each_matching_node_and_match(dn, matches, match) \ | |
1084 | for (dn = of_find_matching_node_and_match(NULL, matches, match); \ | |
1085 | dn; dn = of_find_matching_node_and_match(dn, matches, match)) | |
1086 | ||
1087 | #define for_each_child_of_node(parent, child) \ | |
1088 | for (child = of_get_next_child(parent, NULL); child != NULL; \ | |
1089 | child = of_get_next_child(parent, child)) | |
1090 | #define for_each_available_child_of_node(parent, child) \ | |
1091 | for (child = of_get_next_available_child(parent, NULL); child != NULL; \ | |
1092 | child = of_get_next_available_child(parent, child)) | |
1093 | ||
1094 | #define for_each_node_with_property(dn, prop_name) \ | |
1095 | for (dn = of_find_node_with_property(NULL, prop_name); dn; \ | |
1096 | dn = of_find_node_with_property(dn, prop_name)) | |
1097 | ||
1098 | static inline int of_get_child_count(const struct device_node *np) | |
1099 | { | |
1100 | struct device_node *child; | |
1101 | int num = 0; | |
1102 | ||
1103 | for_each_child_of_node(np, child) | |
1104 | num++; | |
1105 | ||
1106 | return num; | |
1107 | } | |
1108 | ||
1109 | static inline int of_get_available_child_count(const struct device_node *np) | |
1110 | { | |
1111 | struct device_node *child; | |
1112 | int num = 0; | |
1113 | ||
1114 | for_each_available_child_of_node(np, child) | |
1115 | num++; | |
1116 | ||
1117 | return num; | |
1118 | } | |
1119 | ||
71f50c6d | 1120 | #if defined(CONFIG_OF) && !defined(MODULE) |
54196ccb RH |
1121 | #define _OF_DECLARE(table, name, compat, fn, fn_type) \ |
1122 | static const struct of_device_id __of_table_##name \ | |
1123 | __used __section(__##table##_of_table) \ | |
1124 | = { .compatible = compat, \ | |
1125 | .data = (fn == (fn_type)NULL) ? fn : fn } | |
1126 | #else | |
5f563585 | 1127 | #define _OF_DECLARE(table, name, compat, fn, fn_type) \ |
54196ccb RH |
1128 | static const struct of_device_id __of_table_##name \ |
1129 | __attribute__((unused)) \ | |
1130 | = { .compatible = compat, \ | |
1131 | .data = (fn == (fn_type)NULL) ? fn : fn } | |
1132 | #endif | |
1133 | ||
1134 | typedef int (*of_init_fn_2)(struct device_node *, struct device_node *); | |
c35d9292 | 1135 | typedef int (*of_init_fn_1_ret)(struct device_node *); |
54196ccb RH |
1136 | typedef void (*of_init_fn_1)(struct device_node *); |
1137 | ||
1138 | #define OF_DECLARE_1(table, name, compat, fn) \ | |
1139 | _OF_DECLARE(table, name, compat, fn, of_init_fn_1) | |
c35d9292 DL |
1140 | #define OF_DECLARE_1_RET(table, name, compat, fn) \ |
1141 | _OF_DECLARE(table, name, compat, fn, of_init_fn_1_ret) | |
54196ccb RH |
1142 | #define OF_DECLARE_2(table, name, compat, fn) \ |
1143 | _OF_DECLARE(table, name, compat, fn, of_init_fn_2) | |
1144 | ||
201c910b PA |
1145 | /** |
1146 | * struct of_changeset_entry - Holds a changeset entry | |
1147 | * | |
1148 | * @node: list_head for the log list | |
1149 | * @action: notifier action | |
1150 | * @np: pointer to the device node affected | |
1151 | * @prop: pointer to the property affected | |
1152 | * @old_prop: hold a pointer to the original property | |
1153 | * | |
1154 | * Every modification of the device tree during a changeset | |
1155 | * is held in a list of of_changeset_entry structures. | |
1156 | * That way we can recover from a partial application, or we can | |
1157 | * revert the changeset | |
1158 | */ | |
1159 | struct of_changeset_entry { | |
1160 | struct list_head node; | |
1161 | unsigned long action; | |
1162 | struct device_node *np; | |
1163 | struct property *prop; | |
1164 | struct property *old_prop; | |
1165 | }; | |
1166 | ||
1167 | /** | |
1168 | * struct of_changeset - changeset tracker structure | |
1169 | * | |
1170 | * @entries: list_head for the changeset entries | |
1171 | * | |
1172 | * changesets are a convenient way to apply bulk changes to the | |
1173 | * live tree. In case of an error, changes are rolled-back. | |
1174 | * changesets live on after initial application, and if not | |
1175 | * destroyed after use, they can be reverted in one single call. | |
1176 | */ | |
1177 | struct of_changeset { | |
1178 | struct list_head entries; | |
1179 | }; | |
1180 | ||
b53a2340 PA |
1181 | enum of_reconfig_change { |
1182 | OF_RECONFIG_NO_CHANGE = 0, | |
1183 | OF_RECONFIG_CHANGE_ADD, | |
1184 | OF_RECONFIG_CHANGE_REMOVE, | |
1185 | }; | |
1186 | ||
201c910b | 1187 | #ifdef CONFIG_OF_DYNAMIC |
f6892d19 GL |
1188 | extern int of_reconfig_notifier_register(struct notifier_block *); |
1189 | extern int of_reconfig_notifier_unregister(struct notifier_block *); | |
f5242e5a GL |
1190 | extern int of_reconfig_notify(unsigned long, struct of_reconfig_data *rd); |
1191 | extern int of_reconfig_get_state_change(unsigned long action, | |
1192 | struct of_reconfig_data *arg); | |
f6892d19 | 1193 | |
201c910b PA |
1194 | extern void of_changeset_init(struct of_changeset *ocs); |
1195 | extern void of_changeset_destroy(struct of_changeset *ocs); | |
1196 | extern int of_changeset_apply(struct of_changeset *ocs); | |
1197 | extern int of_changeset_revert(struct of_changeset *ocs); | |
1198 | extern int of_changeset_action(struct of_changeset *ocs, | |
1199 | unsigned long action, struct device_node *np, | |
1200 | struct property *prop); | |
1201 | ||
1202 | static inline int of_changeset_attach_node(struct of_changeset *ocs, | |
1203 | struct device_node *np) | |
1204 | { | |
1205 | return of_changeset_action(ocs, OF_RECONFIG_ATTACH_NODE, np, NULL); | |
1206 | } | |
1207 | ||
1208 | static inline int of_changeset_detach_node(struct of_changeset *ocs, | |
1209 | struct device_node *np) | |
1210 | { | |
1211 | return of_changeset_action(ocs, OF_RECONFIG_DETACH_NODE, np, NULL); | |
1212 | } | |
1213 | ||
1214 | static inline int of_changeset_add_property(struct of_changeset *ocs, | |
1215 | struct device_node *np, struct property *prop) | |
1216 | { | |
1217 | return of_changeset_action(ocs, OF_RECONFIG_ADD_PROPERTY, np, prop); | |
1218 | } | |
1219 | ||
1220 | static inline int of_changeset_remove_property(struct of_changeset *ocs, | |
1221 | struct device_node *np, struct property *prop) | |
1222 | { | |
1223 | return of_changeset_action(ocs, OF_RECONFIG_REMOVE_PROPERTY, np, prop); | |
1224 | } | |
1225 | ||
1226 | static inline int of_changeset_update_property(struct of_changeset *ocs, | |
1227 | struct device_node *np, struct property *prop) | |
1228 | { | |
1229 | return of_changeset_action(ocs, OF_RECONFIG_UPDATE_PROPERTY, np, prop); | |
1230 | } | |
f6892d19 GL |
1231 | #else /* CONFIG_OF_DYNAMIC */ |
1232 | static inline int of_reconfig_notifier_register(struct notifier_block *nb) | |
1233 | { | |
1234 | return -EINVAL; | |
1235 | } | |
1236 | static inline int of_reconfig_notifier_unregister(struct notifier_block *nb) | |
1237 | { | |
1238 | return -EINVAL; | |
1239 | } | |
f5242e5a GL |
1240 | static inline int of_reconfig_notify(unsigned long action, |
1241 | struct of_reconfig_data *arg) | |
f6892d19 GL |
1242 | { |
1243 | return -EINVAL; | |
1244 | } | |
f5242e5a GL |
1245 | static inline int of_reconfig_get_state_change(unsigned long action, |
1246 | struct of_reconfig_data *arg) | |
f6892d19 GL |
1247 | { |
1248 | return -EINVAL; | |
1249 | } | |
1250 | #endif /* CONFIG_OF_DYNAMIC */ | |
201c910b | 1251 | |
7941b27b PA |
1252 | /* CONFIG_OF_RESOLVE api */ |
1253 | extern int of_resolve_phandles(struct device_node *tree); | |
1254 | ||
a4b4e046 | 1255 | /** |
8f73110f | 1256 | * of_device_is_system_power_controller - Tells if system-power-controller is found for device_node |
a4b4e046 RP |
1257 | * @np: Pointer to the given device_node |
1258 | * | |
1259 | * return true if present false otherwise | |
1260 | */ | |
8f73110f | 1261 | static inline bool of_device_is_system_power_controller(const struct device_node *np) |
a4b4e046 | 1262 | { |
8f73110f | 1263 | return of_property_read_bool(np, "system-power-controller"); |
a4b4e046 RP |
1264 | } |
1265 | ||
7518b589 PA |
1266 | /** |
1267 | * Overlay support | |
1268 | */ | |
1269 | ||
39a842e2 AT |
1270 | enum of_overlay_notify_action { |
1271 | OF_OVERLAY_PRE_APPLY, | |
1272 | OF_OVERLAY_POST_APPLY, | |
1273 | OF_OVERLAY_PRE_REMOVE, | |
1274 | OF_OVERLAY_POST_REMOVE, | |
1275 | }; | |
1276 | ||
1277 | struct of_overlay_notify_data { | |
1278 | struct device_node *overlay; | |
1279 | struct device_node *target; | |
1280 | }; | |
1281 | ||
7518b589 PA |
1282 | #ifdef CONFIG_OF_OVERLAY |
1283 | ||
1284 | /* ID based overlays; the API for external users */ | |
1285 | int of_overlay_create(struct device_node *tree); | |
1286 | int of_overlay_destroy(int id); | |
1287 | int of_overlay_destroy_all(void); | |
1288 | ||
39a842e2 AT |
1289 | int of_overlay_notifier_register(struct notifier_block *nb); |
1290 | int of_overlay_notifier_unregister(struct notifier_block *nb); | |
1291 | ||
7518b589 PA |
1292 | #else |
1293 | ||
1294 | static inline int of_overlay_create(struct device_node *tree) | |
1295 | { | |
1296 | return -ENOTSUPP; | |
1297 | } | |
1298 | ||
1299 | static inline int of_overlay_destroy(int id) | |
1300 | { | |
1301 | return -ENOTSUPP; | |
1302 | } | |
1303 | ||
1304 | static inline int of_overlay_destroy_all(void) | |
1305 | { | |
1306 | return -ENOTSUPP; | |
1307 | } | |
1308 | ||
39a842e2 AT |
1309 | static inline int of_overlay_notifier_register(struct notifier_block *nb) |
1310 | { | |
1311 | return 0; | |
1312 | } | |
1313 | ||
1314 | static inline int of_overlay_notifier_unregister(struct notifier_block *nb) | |
1315 | { | |
1316 | return 0; | |
1317 | } | |
1318 | ||
7518b589 PA |
1319 | #endif |
1320 | ||
76c1ce78 | 1321 | #endif /* _LINUX_OF_H */ |