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