Commit | Line | Data |
---|---|---|
76c1ce78 SR |
1 | #ifndef _LINUX_OF_H |
2 | #define _LINUX_OF_H | |
3 | /* | |
4 | * Definitions for talking to the Open Firmware PROM on | |
5 | * Power Macintosh and other computers. | |
6 | * | |
7 | * Copyright (C) 1996-2005 Paul Mackerras. | |
8 | * | |
9 | * Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp. | |
10 | * Updates for SPARC64 by David S. Miller | |
11 | * Derived from PowerPC and Sparc prom.h files by Stephen Rothwell, IBM Corp. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or | |
14 | * modify it under the terms of the GNU General Public License | |
15 | * as published by the Free Software Foundation; either version | |
16 | * 2 of the License, or (at your option) any later version. | |
17 | */ | |
18 | #include <linux/types.h> | |
1977f032 | 19 | #include <linux/bitops.h> |
e51130c0 | 20 | #include <linux/errno.h> |
75b57ecf | 21 | #include <linux/kobject.h> |
283029d1 | 22 | #include <linux/mod_devicetable.h> |
0d351c3e | 23 | #include <linux/spinlock.h> |
5ca4db61 | 24 | #include <linux/topology.h> |
1cf3d8b3 | 25 | #include <linux/notifier.h> |
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; | |
3708184a | 103 | extern const struct fwnode_operations of_fwnode_ops; |
0829f6d1 PA |
104 | static inline void of_node_init(struct device_node *node) |
105 | { | |
106 | kobject_init(&node->kobj, &of_node_ktype); | |
3708184a | 107 | node->fwnode.ops = &of_fwnode_ops; |
0829f6d1 PA |
108 | } |
109 | ||
110 | /* true when node is initialized */ | |
111 | static inline int of_node_is_initialized(struct device_node *node) | |
112 | { | |
113 | return node && node->kobj.state_initialized; | |
114 | } | |
115 | ||
116 | /* true when node is attached (i.e. present on sysfs) */ | |
117 | static inline int of_node_is_attached(struct device_node *node) | |
118 | { | |
119 | return node && node->kobj.state_in_sysfs; | |
120 | } | |
121 | ||
0f22dd39 GL |
122 | #ifdef CONFIG_OF_DYNAMIC |
123 | extern struct device_node *of_node_get(struct device_node *node); | |
124 | extern void of_node_put(struct device_node *node); | |
125 | #else /* CONFIG_OF_DYNAMIC */ | |
3ecdd051 RH |
126 | /* Dummy ref counting routines - to be implemented later */ |
127 | static inline struct device_node *of_node_get(struct device_node *node) | |
128 | { | |
129 | return node; | |
130 | } | |
0f22dd39 GL |
131 | static inline void of_node_put(struct device_node *node) { } |
132 | #endif /* !CONFIG_OF_DYNAMIC */ | |
3ecdd051 | 133 | |
41f88009 | 134 | /* Pointer for first entry in chain of all nodes. */ |
5063e25a | 135 | extern struct device_node *of_root; |
fc0bdae4 | 136 | extern struct device_node *of_chosen; |
611cad72 | 137 | extern struct device_node *of_aliases; |
a752ee56 | 138 | extern struct device_node *of_stdout; |
d6d3c4e6 | 139 | extern raw_spinlock_t devtree_lock; |
41f88009 | 140 | |
391b459d PA |
141 | /* flag descriptions (need to be visible even when !CONFIG_OF) */ |
142 | #define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */ | |
143 | #define OF_DETACHED 2 /* node has been detached from the device tree */ | |
144 | #define OF_POPULATED 3 /* device already created for the node */ | |
145 | #define OF_POPULATED_BUS 4 /* of_platform_populate recursed to children of this node */ | |
146 | ||
b1d06b60 GR |
147 | #define OF_BAD_ADDR ((u64)-1) |
148 | ||
6d09dc6b | 149 | #ifdef CONFIG_OF |
194ec936 SH |
150 | void of_core_init(void); |
151 | ||
d20dc149 | 152 | static inline bool is_of_node(const struct fwnode_handle *fwnode) |
8a0662d9 | 153 | { |
db3e50f3 | 154 | return !IS_ERR_OR_NULL(fwnode) && fwnode->ops == &of_fwnode_ops; |
8a0662d9 RW |
155 | } |
156 | ||
d20dc149 SA |
157 | #define to_of_node(__fwnode) \ |
158 | ({ \ | |
159 | typeof(__fwnode) __to_of_node_fwnode = (__fwnode); \ | |
160 | \ | |
161 | is_of_node(__to_of_node_fwnode) ? \ | |
162 | container_of(__to_of_node_fwnode, \ | |
163 | struct device_node, fwnode) : \ | |
164 | NULL; \ | |
165 | }) | |
8a0662d9 | 166 | |
debd3a3b SA |
167 | #define of_fwnode_handle(node) \ |
168 | ({ \ | |
169 | typeof(node) __of_fwnode_handle_node = (node); \ | |
170 | \ | |
171 | __of_fwnode_handle_node ? \ | |
172 | &__of_fwnode_handle_node->fwnode : NULL; \ | |
173 | }) | |
67831837 | 174 | |
3bcbaf6e SAS |
175 | static inline bool of_have_populated_dt(void) |
176 | { | |
5063e25a | 177 | return of_root != NULL; |
3bcbaf6e SAS |
178 | } |
179 | ||
035ebefc AS |
180 | static inline bool of_node_is_root(const struct device_node *node) |
181 | { | |
182 | return node && (node->parent == NULL); | |
183 | } | |
184 | ||
50436312 GL |
185 | static inline int of_node_check_flag(struct device_node *n, unsigned long flag) |
186 | { | |
187 | return test_bit(flag, &n->_flags); | |
188 | } | |
189 | ||
c6e126de PM |
190 | static inline int of_node_test_and_set_flag(struct device_node *n, |
191 | unsigned long flag) | |
192 | { | |
193 | return test_and_set_bit(flag, &n->_flags); | |
194 | } | |
195 | ||
50436312 GL |
196 | static inline void of_node_set_flag(struct device_node *n, unsigned long flag) |
197 | { | |
198 | set_bit(flag, &n->_flags); | |
199 | } | |
200 | ||
588453c6 PA |
201 | static inline void of_node_clear_flag(struct device_node *n, unsigned long flag) |
202 | { | |
203 | clear_bit(flag, &n->_flags); | |
204 | } | |
205 | ||
206 | static inline int of_property_check_flag(struct property *p, unsigned long flag) | |
207 | { | |
208 | return test_bit(flag, &p->_flags); | |
209 | } | |
210 | ||
211 | static inline void of_property_set_flag(struct property *p, unsigned long flag) | |
212 | { | |
213 | set_bit(flag, &p->_flags); | |
214 | } | |
215 | ||
216 | static inline void of_property_clear_flag(struct property *p, unsigned long flag) | |
217 | { | |
218 | clear_bit(flag, &p->_flags); | |
219 | } | |
220 | ||
5063e25a | 221 | extern struct device_node *__of_find_all_nodes(struct device_node *prev); |
e91edcf5 GL |
222 | extern struct device_node *of_find_all_nodes(struct device_node *prev); |
223 | ||
b6caf2ad | 224 | /* |
3d6b8828 | 225 | * OF address retrieval & translation |
b6caf2ad GL |
226 | */ |
227 | ||
228 | /* Helper to read a big number; size is in cells (not bytes) */ | |
2e89e685 | 229 | static inline u64 of_read_number(const __be32 *cell, int size) |
b6caf2ad GL |
230 | { |
231 | u64 r = 0; | |
232 | while (size--) | |
2e89e685 | 233 | r = (r << 32) | be32_to_cpu(*(cell++)); |
b6caf2ad GL |
234 | return r; |
235 | } | |
236 | ||
237 | /* Like of_read_number, but we want an unsigned long result */ | |
2e89e685 | 238 | static inline unsigned long of_read_ulong(const __be32 *cell, int size) |
b6caf2ad | 239 | { |
2be09cb9 GL |
240 | /* toss away upper bits if unsigned long is smaller than u64 */ |
241 | return of_read_number(cell, size); | |
b6caf2ad | 242 | } |
b6caf2ad | 243 | |
b5b4bb3f | 244 | #if defined(CONFIG_SPARC) |
76c1ce78 | 245 | #include <asm/prom.h> |
b5b4bb3f | 246 | #endif |
76c1ce78 | 247 | |
7c7b60cb GL |
248 | /* Default #address and #size cells. Allow arch asm/prom.h to override */ |
249 | #if !defined(OF_ROOT_NODE_ADDR_CELLS_DEFAULT) | |
250 | #define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1 | |
251 | #define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1 | |
252 | #endif | |
253 | ||
61e955db GL |
254 | #define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags) |
255 | #define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags) | |
256 | ||
c0a05bf0 | 257 | static inline const char *of_node_full_name(const struct device_node *np) |
74a7f084 GL |
258 | { |
259 | return np ? np->full_name : "<no-node>"; | |
260 | } | |
261 | ||
5063e25a GL |
262 | #define for_each_of_allnodes_from(from, dn) \ |
263 | for (dn = __of_find_all_nodes(from); dn; dn = __of_find_all_nodes(dn)) | |
264 | #define for_each_of_allnodes(dn) for_each_of_allnodes_from(NULL, dn) | |
76c1ce78 SR |
265 | extern struct device_node *of_find_node_by_name(struct device_node *from, |
266 | const char *name); | |
76c1ce78 SR |
267 | extern struct device_node *of_find_node_by_type(struct device_node *from, |
268 | const char *type); | |
76c1ce78 SR |
269 | extern struct device_node *of_find_compatible_node(struct device_node *from, |
270 | const char *type, const char *compat); | |
50c8af4c SW |
271 | extern struct device_node *of_find_matching_node_and_match( |
272 | struct device_node *from, | |
273 | const struct of_device_id *matches, | |
274 | const struct of_device_id **match); | |
662372e4 | 275 | |
75c28c09 LL |
276 | extern struct device_node *of_find_node_opts_by_path(const char *path, |
277 | const char **opts); | |
278 | static inline struct device_node *of_find_node_by_path(const char *path) | |
279 | { | |
280 | return of_find_node_opts_by_path(path, NULL); | |
281 | } | |
282 | ||
76c1ce78 SR |
283 | extern struct device_node *of_find_node_by_phandle(phandle handle); |
284 | extern struct device_node *of_get_parent(const struct device_node *node); | |
f4eb0107 | 285 | extern struct device_node *of_get_next_parent(struct device_node *node); |
76c1ce78 SR |
286 | extern struct device_node *of_get_next_child(const struct device_node *node, |
287 | struct device_node *prev); | |
3296193d TT |
288 | extern struct device_node *of_get_next_available_child( |
289 | const struct device_node *node, struct device_node *prev); | |
290 | ||
c1ede704 JH |
291 | extern struct device_node *of_get_compatible_child(const struct device_node *parent, |
292 | const char *compatible); | |
9c19761a SK |
293 | extern struct device_node *of_get_child_by_name(const struct device_node *node, |
294 | const char *name); | |
954e04b9 | 295 | |
a3e31b45 SH |
296 | /* cache lookup */ |
297 | extern struct device_node *of_find_next_cache_node(const struct device_node *); | |
5fa23530 | 298 | extern int of_find_last_cache_level(unsigned int cpu); |
1e291b14 ME |
299 | extern struct device_node *of_find_node_with_property( |
300 | struct device_node *from, const char *prop_name); | |
1e291b14 | 301 | |
76c1ce78 SR |
302 | extern struct property *of_find_property(const struct device_node *np, |
303 | const char *name, | |
304 | int *lenp); | |
ad54a0cf HS |
305 | extern int of_property_count_elems_of_size(const struct device_node *np, |
306 | const char *propname, int elem_size); | |
3daf3726 TP |
307 | extern int of_property_read_u32_index(const struct device_node *np, |
308 | const char *propname, | |
309 | u32 index, u32 *out_value); | |
2475a2b6 AP |
310 | extern int of_property_read_u64_index(const struct device_node *np, |
311 | const char *propname, | |
312 | u32 index, u64 *out_value); | |
a67e9472 RF |
313 | extern int of_property_read_variable_u8_array(const struct device_node *np, |
314 | const char *propname, u8 *out_values, | |
315 | size_t sz_min, size_t sz_max); | |
316 | extern int of_property_read_variable_u16_array(const struct device_node *np, | |
317 | const char *propname, u16 *out_values, | |
318 | size_t sz_min, size_t sz_max); | |
319 | extern int of_property_read_variable_u32_array(const struct device_node *np, | |
320 | const char *propname, | |
321 | u32 *out_values, | |
322 | size_t sz_min, | |
323 | size_t sz_max); | |
4cd7f7a3 JI |
324 | extern int of_property_read_u64(const struct device_node *np, |
325 | const char *propname, u64 *out_value); | |
a67e9472 RF |
326 | extern int of_property_read_variable_u64_array(const struct device_node *np, |
327 | const char *propname, | |
328 | u64 *out_values, | |
329 | size_t sz_min, | |
330 | size_t sz_max); | |
0e373639 | 331 | |
fe99c707 | 332 | extern int of_property_read_string(const struct device_node *np, |
aac285c6 JI |
333 | const char *propname, |
334 | const char **out_string); | |
fe99c707 | 335 | extern int of_property_match_string(const struct device_node *np, |
7aff0fe3 GL |
336 | const char *propname, |
337 | const char *string); | |
fe99c707 | 338 | extern int of_property_read_string_helper(const struct device_node *np, |
a87fa1d8 GL |
339 | const char *propname, |
340 | const char **out_strs, size_t sz, int index); | |
76c1ce78 SR |
341 | extern int of_device_is_compatible(const struct device_node *device, |
342 | const char *); | |
b9c13fe3 BH |
343 | extern int of_device_compatible_match(struct device_node *device, |
344 | const char *const *compat); | |
53a4ab96 | 345 | extern bool of_device_is_available(const struct device_node *device); |
37786c7f | 346 | extern bool of_device_is_big_endian(const struct device_node *device); |
76c1ce78 SR |
347 | extern const void *of_get_property(const struct device_node *node, |
348 | const char *name, | |
349 | int *lenp); | |
183912d3 | 350 | extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread); |
8af0da93 DA |
351 | #define for_each_property_of_node(dn, pp) \ |
352 | for (pp = dn->properties; pp != NULL; pp = pp->next) | |
611cad72 | 353 | |
76c1ce78 SR |
354 | extern int of_n_addr_cells(struct device_node *np); |
355 | extern int of_n_size_cells(struct device_node *np); | |
283029d1 GL |
356 | extern const struct of_device_id *of_match_node( |
357 | const struct of_device_id *matches, const struct device_node *node); | |
3f07af49 | 358 | extern int of_modalias_node(struct device_node *node, char *modalias, int len); |
624cfca5 | 359 | extern void of_print_phandle_args(const char *msg, const struct of_phandle_args *args); |
b8fbdc42 | 360 | extern struct device_node *of_parse_phandle(const struct device_node *np, |
739649c5 GL |
361 | const char *phandle_name, |
362 | int index); | |
93c667ca | 363 | extern int of_parse_phandle_with_args(const struct device_node *np, |
64b60e09 | 364 | const char *list_name, const char *cells_name, int index, |
15c9a0ac | 365 | struct of_phandle_args *out_args); |
035fd948 SW |
366 | extern int of_parse_phandle_with_fixed_args(const struct device_node *np, |
367 | const char *list_name, int cells_count, int index, | |
368 | struct of_phandle_args *out_args); | |
bd69f73f GL |
369 | extern int of_count_phandle_with_args(const struct device_node *np, |
370 | const char *list_name, const char *cells_name); | |
76c1ce78 | 371 | |
74e1fbb1 JR |
372 | /* phandle iterator functions */ |
373 | extern int of_phandle_iterator_init(struct of_phandle_iterator *it, | |
374 | const struct device_node *np, | |
375 | const char *list_name, | |
376 | const char *cells_name, | |
377 | int cell_count); | |
378 | ||
cd209b41 | 379 | extern int of_phandle_iterator_next(struct of_phandle_iterator *it); |
abdaa77b JR |
380 | extern int of_phandle_iterator_args(struct of_phandle_iterator *it, |
381 | uint32_t *args, | |
382 | int size); | |
cd209b41 | 383 | |
611cad72 SG |
384 | extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align)); |
385 | extern int of_alias_get_id(struct device_node *np, const char *stem); | |
351d224f | 386 | extern int of_alias_get_highest_id(const char *stem); |
611cad72 | 387 | |
21b082ec GL |
388 | extern int of_machine_is_compatible(const char *compat); |
389 | ||
79d1c712 NF |
390 | extern int of_add_property(struct device_node *np, struct property *prop); |
391 | extern int of_remove_property(struct device_node *np, struct property *prop); | |
392 | extern int of_update_property(struct device_node *np, struct property *newprop); | |
21b082ec | 393 | |
fcdeb7fe | 394 | /* For updating the device tree at runtime */ |
1cf3d8b3 NF |
395 | #define OF_RECONFIG_ATTACH_NODE 0x0001 |
396 | #define OF_RECONFIG_DETACH_NODE 0x0002 | |
397 | #define OF_RECONFIG_ADD_PROPERTY 0x0003 | |
398 | #define OF_RECONFIG_REMOVE_PROPERTY 0x0004 | |
399 | #define OF_RECONFIG_UPDATE_PROPERTY 0x0005 | |
400 | ||
1cf3d8b3 NF |
401 | extern int of_attach_node(struct device_node *); |
402 | extern int of_detach_node(struct device_node *); | |
fcdeb7fe | 403 | |
3a1e362e | 404 | #define of_match_ptr(_ptr) (_ptr) |
c541adc6 | 405 | |
a67e9472 RF |
406 | /** |
407 | * of_property_read_u8_array - Find and read an array of u8 from a property. | |
408 | * | |
409 | * @np: device node from which the property value is to be read. | |
410 | * @propname: name of the property to be searched. | |
411 | * @out_values: pointer to return value, modified only if return value is 0. | |
412 | * @sz: number of array elements to read | |
413 | * | |
414 | * Search for a property in a device node and read 8-bit value(s) from | |
415 | * it. Returns 0 on success, -EINVAL if the property does not exist, | |
416 | * -ENODATA if property does not have a value, and -EOVERFLOW if the | |
417 | * property data isn't large enough. | |
418 | * | |
419 | * dts entry of array should be like: | |
420 | * property = /bits/ 8 <0x50 0x60 0x70>; | |
421 | * | |
422 | * The out_values is modified only if a valid u8 value can be decoded. | |
423 | */ | |
424 | static inline int of_property_read_u8_array(const struct device_node *np, | |
425 | const char *propname, | |
426 | u8 *out_values, size_t sz) | |
427 | { | |
428 | int ret = of_property_read_variable_u8_array(np, propname, out_values, | |
429 | sz, 0); | |
430 | if (ret >= 0) | |
431 | return 0; | |
432 | else | |
433 | return ret; | |
434 | } | |
435 | ||
436 | /** | |
437 | * of_property_read_u16_array - Find and read an array of u16 from a property. | |
438 | * | |
439 | * @np: device node from which the property value is to be read. | |
440 | * @propname: name of the property to be searched. | |
441 | * @out_values: pointer to return value, modified only if return value is 0. | |
442 | * @sz: number of array elements to read | |
443 | * | |
444 | * Search for a property in a device node and read 16-bit value(s) from | |
445 | * it. Returns 0 on success, -EINVAL if the property does not exist, | |
446 | * -ENODATA if property does not have a value, and -EOVERFLOW if the | |
447 | * property data isn't large enough. | |
448 | * | |
449 | * dts entry of array should be like: | |
450 | * property = /bits/ 16 <0x5000 0x6000 0x7000>; | |
451 | * | |
452 | * The out_values is modified only if a valid u16 value can be decoded. | |
453 | */ | |
454 | static inline int of_property_read_u16_array(const struct device_node *np, | |
455 | const char *propname, | |
456 | u16 *out_values, size_t sz) | |
457 | { | |
458 | int ret = of_property_read_variable_u16_array(np, propname, out_values, | |
459 | sz, 0); | |
460 | if (ret >= 0) | |
461 | return 0; | |
462 | else | |
463 | return ret; | |
464 | } | |
465 | ||
466 | /** | |
467 | * of_property_read_u32_array - Find and read an array of 32 bit integers | |
468 | * from a property. | |
469 | * | |
470 | * @np: device node from which the property value is to be read. | |
471 | * @propname: name of the property to be searched. | |
472 | * @out_values: pointer to return value, modified only if return value is 0. | |
473 | * @sz: number of array elements to read | |
474 | * | |
475 | * Search for a property in a device node and read 32-bit value(s) from | |
476 | * it. Returns 0 on success, -EINVAL if the property does not exist, | |
477 | * -ENODATA if property does not have a value, and -EOVERFLOW if the | |
478 | * property data isn't large enough. | |
479 | * | |
480 | * The out_values is modified only if a valid u32 value can be decoded. | |
481 | */ | |
482 | static inline int of_property_read_u32_array(const struct device_node *np, | |
483 | const char *propname, | |
484 | u32 *out_values, size_t sz) | |
485 | { | |
486 | int ret = of_property_read_variable_u32_array(np, propname, out_values, | |
487 | sz, 0); | |
488 | if (ret >= 0) | |
489 | return 0; | |
490 | else | |
491 | return ret; | |
492 | } | |
493 | ||
494 | /** | |
495 | * of_property_read_u64_array - Find and read an array of 64 bit integers | |
496 | * from a property. | |
497 | * | |
498 | * @np: device node from which the property value is to be read. | |
499 | * @propname: name of the property to be searched. | |
500 | * @out_values: pointer to return value, modified only if return value is 0. | |
501 | * @sz: number of array elements to read | |
502 | * | |
503 | * Search for a property in a device node and read 64-bit value(s) from | |
504 | * it. Returns 0 on success, -EINVAL if the property does not exist, | |
505 | * -ENODATA if property does not have a value, and -EOVERFLOW if the | |
506 | * property data isn't large enough. | |
507 | * | |
508 | * The out_values is modified only if a valid u64 value can be decoded. | |
509 | */ | |
510 | static inline int of_property_read_u64_array(const struct device_node *np, | |
511 | const char *propname, | |
512 | u64 *out_values, size_t sz) | |
513 | { | |
514 | int ret = of_property_read_variable_u64_array(np, propname, out_values, | |
515 | sz, 0); | |
516 | if (ret >= 0) | |
517 | return 0; | |
518 | else | |
519 | return ret; | |
520 | } | |
521 | ||
c541adc6 SW |
522 | /* |
523 | * struct property *prop; | |
524 | * const __be32 *p; | |
525 | * u32 u; | |
526 | * | |
527 | * of_property_for_each_u32(np, "propname", prop, p, u) | |
528 | * printk("U32 value: %x\n", u); | |
529 | */ | |
530 | const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur, | |
531 | u32 *pu); | |
c541adc6 SW |
532 | /* |
533 | * struct property *prop; | |
534 | * const char *s; | |
535 | * | |
536 | * of_property_for_each_string(np, "propname", prop, s) | |
537 | * printk("String value: %s\n", s); | |
538 | */ | |
539 | const char *of_prop_next_string(struct property *prop, const char *cur); | |
c541adc6 | 540 | |
3482f2c5 | 541 | bool of_console_check(struct device_node *dn, char *name, int index); |
5c19e952 | 542 | |
b98c0239 | 543 | #else /* CONFIG_OF */ |
3bcbaf6e | 544 | |
194ec936 SH |
545 | static inline void of_core_init(void) |
546 | { | |
547 | } | |
548 | ||
d20dc149 | 549 | static inline bool is_of_node(const struct fwnode_handle *fwnode) |
8a0662d9 RW |
550 | { |
551 | return false; | |
552 | } | |
553 | ||
d20dc149 | 554 | static inline struct device_node *to_of_node(const struct fwnode_handle *fwnode) |
8a0662d9 RW |
555 | { |
556 | return NULL; | |
557 | } | |
558 | ||
4c358e15 | 559 | static inline const char* of_node_full_name(const struct device_node *np) |
74a7f084 GL |
560 | { |
561 | return "<no-node>"; | |
562 | } | |
563 | ||
1cc44f43 PU |
564 | static inline struct device_node *of_find_node_by_name(struct device_node *from, |
565 | const char *name) | |
566 | { | |
567 | return NULL; | |
568 | } | |
569 | ||
662372e4 RH |
570 | static inline struct device_node *of_find_node_by_type(struct device_node *from, |
571 | const char *type) | |
066ec1dd AS |
572 | { |
573 | return NULL; | |
574 | } | |
575 | ||
662372e4 RH |
576 | static inline struct device_node *of_find_matching_node_and_match( |
577 | struct device_node *from, | |
578 | const struct of_device_id *matches, | |
579 | const struct of_device_id **match) | |
3bcbaf6e | 580 | { |
662372e4 | 581 | return NULL; |
3bcbaf6e SAS |
582 | } |
583 | ||
20cd477c AS |
584 | static inline struct device_node *of_find_node_by_path(const char *path) |
585 | { | |
586 | return NULL; | |
587 | } | |
588 | ||
75c28c09 LL |
589 | static inline struct device_node *of_find_node_opts_by_path(const char *path, |
590 | const char **opts) | |
591 | { | |
592 | return NULL; | |
593 | } | |
594 | ||
ce16b9d2 SA |
595 | static inline struct device_node *of_find_node_by_phandle(phandle handle) |
596 | { | |
597 | return NULL; | |
598 | } | |
599 | ||
662372e4 | 600 | static inline struct device_node *of_get_parent(const struct device_node *node) |
00b2c76a | 601 | { |
662372e4 | 602 | return NULL; |
00b2c76a DH |
603 | } |
604 | ||
662372e4 RH |
605 | static inline struct device_node *of_get_next_child( |
606 | const struct device_node *node, struct device_node *prev) | |
607 | { | |
608 | return NULL; | |
609 | } | |
aba3dfff | 610 | |
662372e4 RH |
611 | static inline struct device_node *of_get_next_available_child( |
612 | const struct device_node *node, struct device_node *prev) | |
613 | { | |
614 | return NULL; | |
615 | } | |
f6f0747e | 616 | |
662372e4 RH |
617 | static inline struct device_node *of_find_node_with_property( |
618 | struct device_node *from, const char *prop_name) | |
25c040c9 OJ |
619 | { |
620 | return NULL; | |
621 | } | |
622 | ||
67831837 SA |
623 | #define of_fwnode_handle(node) NULL |
624 | ||
662372e4 | 625 | static inline bool of_have_populated_dt(void) |
183f1d0c | 626 | { |
662372e4 | 627 | return false; |
183f1d0c DA |
628 | } |
629 | ||
c1ede704 JH |
630 | static inline struct device_node *of_get_compatible_child(const struct device_node *parent, |
631 | const char *compatible) | |
632 | { | |
633 | return NULL; | |
634 | } | |
635 | ||
662372e4 RH |
636 | static inline struct device_node *of_get_child_by_name( |
637 | const struct device_node *node, | |
638 | const char *name) | |
954e04b9 | 639 | { |
662372e4 | 640 | return NULL; |
954e04b9 BW |
641 | } |
642 | ||
36a0904e RN |
643 | static inline int of_device_is_compatible(const struct device_node *device, |
644 | const char *name) | |
645 | { | |
646 | return 0; | |
647 | } | |
648 | ||
3bc16307 GU |
649 | static inline int of_device_compatible_match(struct device_node *device, |
650 | const char *const *compat) | |
651 | { | |
652 | return 0; | |
653 | } | |
654 | ||
53a4ab96 | 655 | static inline bool of_device_is_available(const struct device_node *device) |
d7195696 | 656 | { |
53a4ab96 | 657 | return false; |
d7195696 RH |
658 | } |
659 | ||
37786c7f KC |
660 | static inline bool of_device_is_big_endian(const struct device_node *device) |
661 | { | |
662 | return false; | |
d7195696 RH |
663 | } |
664 | ||
aba3dfff SW |
665 | static inline struct property *of_find_property(const struct device_node *np, |
666 | const char *name, | |
667 | int *lenp) | |
668 | { | |
669 | return NULL; | |
670 | } | |
671 | ||
2261cc62 SG |
672 | static inline struct device_node *of_find_compatible_node( |
673 | struct device_node *from, | |
674 | const char *type, | |
675 | const char *compat) | |
676 | { | |
677 | return NULL; | |
678 | } | |
679 | ||
ad54a0cf HS |
680 | static inline int of_property_count_elems_of_size(const struct device_node *np, |
681 | const char *propname, int elem_size) | |
682 | { | |
683 | return -ENOSYS; | |
684 | } | |
685 | ||
3daf3726 TP |
686 | static inline int of_property_read_u32_index(const struct device_node *np, |
687 | const char *propname, u32 index, u32 *out_value) | |
688 | { | |
689 | return -ENOSYS; | |
690 | } | |
691 | ||
be193249 VK |
692 | static inline int of_property_read_u8_array(const struct device_node *np, |
693 | const char *propname, u8 *out_values, size_t sz) | |
694 | { | |
695 | return -ENOSYS; | |
696 | } | |
697 | ||
698 | static inline int of_property_read_u16_array(const struct device_node *np, | |
699 | const char *propname, u16 *out_values, size_t sz) | |
700 | { | |
701 | return -ENOSYS; | |
702 | } | |
703 | ||
b98c0239 | 704 | static inline int of_property_read_u32_array(const struct device_node *np, |
aac285c6 JI |
705 | const char *propname, |
706 | u32 *out_values, size_t sz) | |
b98c0239 SG |
707 | { |
708 | return -ENOSYS; | |
709 | } | |
710 | ||
b31384fa RW |
711 | static inline int of_property_read_u64_array(const struct device_node *np, |
712 | const char *propname, | |
713 | u64 *out_values, size_t sz) | |
714 | { | |
715 | return -ENOSYS; | |
716 | } | |
717 | ||
fe99c707 | 718 | static inline int of_property_read_string(const struct device_node *np, |
aac285c6 JI |
719 | const char *propname, |
720 | const char **out_string) | |
b98c0239 SG |
721 | { |
722 | return -ENOSYS; | |
723 | } | |
724 | ||
fe99c707 | 725 | static inline int of_property_read_string_helper(const struct device_node *np, |
a87fa1d8 GL |
726 | const char *propname, |
727 | const char **out_strs, size_t sz, int index) | |
4fcd15a0 BC |
728 | { |
729 | return -ENOSYS; | |
730 | } | |
731 | ||
89272b8c SW |
732 | static inline const void *of_get_property(const struct device_node *node, |
733 | const char *name, | |
734 | int *lenp) | |
735 | { | |
736 | return NULL; | |
737 | } | |
738 | ||
183912d3 SH |
739 | static inline struct device_node *of_get_cpu_node(int cpu, |
740 | unsigned int *thread) | |
741 | { | |
742 | return NULL; | |
743 | } | |
744 | ||
8a1ac5dc AB |
745 | static inline int of_n_addr_cells(struct device_node *np) |
746 | { | |
747 | return 0; | |
748 | ||
749 | } | |
750 | static inline int of_n_size_cells(struct device_node *np) | |
751 | { | |
752 | return 0; | |
753 | } | |
754 | ||
4cd7f7a3 JI |
755 | static inline int of_property_read_u64(const struct device_node *np, |
756 | const char *propname, u64 *out_value) | |
757 | { | |
758 | return -ENOSYS; | |
759 | } | |
760 | ||
fe99c707 | 761 | static inline int of_property_match_string(const struct device_node *np, |
bd3d5500 TR |
762 | const char *propname, |
763 | const char *string) | |
764 | { | |
765 | return -ENOSYS; | |
766 | } | |
767 | ||
b8fbdc42 | 768 | static inline struct device_node *of_parse_phandle(const struct device_node *np, |
36a0904e RN |
769 | const char *phandle_name, |
770 | int index) | |
771 | { | |
772 | return NULL; | |
773 | } | |
774 | ||
e93aeeae | 775 | static inline int of_parse_phandle_with_args(const struct device_node *np, |
e05e5070 TR |
776 | const char *list_name, |
777 | const char *cells_name, | |
778 | int index, | |
779 | struct of_phandle_args *out_args) | |
780 | { | |
781 | return -ENOSYS; | |
782 | } | |
783 | ||
035fd948 SW |
784 | static inline int of_parse_phandle_with_fixed_args(const struct device_node *np, |
785 | const char *list_name, int cells_count, int index, | |
786 | struct of_phandle_args *out_args) | |
787 | { | |
788 | return -ENOSYS; | |
789 | } | |
790 | ||
bd69f73f GL |
791 | static inline int of_count_phandle_with_args(struct device_node *np, |
792 | const char *list_name, | |
793 | const char *cells_name) | |
794 | { | |
795 | return -ENOSYS; | |
796 | } | |
797 | ||
74e1fbb1 JR |
798 | static inline int of_phandle_iterator_init(struct of_phandle_iterator *it, |
799 | const struct device_node *np, | |
800 | const char *list_name, | |
801 | const char *cells_name, | |
802 | int cell_count) | |
803 | { | |
804 | return -ENOSYS; | |
805 | } | |
806 | ||
cd209b41 JR |
807 | static inline int of_phandle_iterator_next(struct of_phandle_iterator *it) |
808 | { | |
809 | return -ENOSYS; | |
810 | } | |
811 | ||
abdaa77b JR |
812 | static inline int of_phandle_iterator_args(struct of_phandle_iterator *it, |
813 | uint32_t *args, | |
814 | int size) | |
815 | { | |
816 | return 0; | |
817 | } | |
818 | ||
ed5f886d NF |
819 | static inline int of_alias_get_id(struct device_node *np, const char *stem) |
820 | { | |
821 | return -ENOSYS; | |
822 | } | |
823 | ||
351d224f WS |
824 | static inline int of_alias_get_highest_id(const char *stem) |
825 | { | |
826 | return -ENOSYS; | |
827 | } | |
828 | ||
50e07f88 SW |
829 | static inline int of_machine_is_compatible(const char *compat) |
830 | { | |
831 | return 0; | |
832 | } | |
833 | ||
3482f2c5 | 834 | static inline bool of_console_check(const struct device_node *dn, const char *name, int index) |
5c19e952 | 835 | { |
3482f2c5 | 836 | return false; |
5c19e952 SH |
837 | } |
838 | ||
2adfffa2 SAS |
839 | static inline const __be32 *of_prop_next_u32(struct property *prop, |
840 | const __be32 *cur, u32 *pu) | |
841 | { | |
842 | return NULL; | |
843 | } | |
844 | ||
845 | static inline const char *of_prop_next_string(struct property *prop, | |
846 | const char *cur) | |
847 | { | |
848 | return NULL; | |
849 | } | |
850 | ||
0384e8c6 PA |
851 | static inline int of_node_check_flag(struct device_node *n, unsigned long flag) |
852 | { | |
853 | return 0; | |
854 | } | |
855 | ||
856 | static inline int of_node_test_and_set_flag(struct device_node *n, | |
857 | unsigned long flag) | |
858 | { | |
859 | return 0; | |
860 | } | |
861 | ||
862 | static inline void of_node_set_flag(struct device_node *n, unsigned long flag) | |
863 | { | |
864 | } | |
865 | ||
866 | static inline void of_node_clear_flag(struct device_node *n, unsigned long flag) | |
867 | { | |
868 | } | |
869 | ||
870 | static inline int of_property_check_flag(struct property *p, unsigned long flag) | |
871 | { | |
872 | return 0; | |
873 | } | |
874 | ||
875 | static inline void of_property_set_flag(struct property *p, unsigned long flag) | |
876 | { | |
877 | } | |
878 | ||
879 | static inline void of_property_clear_flag(struct property *p, unsigned long flag) | |
880 | { | |
881 | } | |
882 | ||
3a1e362e | 883 | #define of_match_ptr(_ptr) NULL |
5762c205 | 884 | #define of_match_node(_matches, _node) NULL |
9dfbf207 | 885 | #endif /* CONFIG_OF */ |
b98c0239 | 886 | |
613e9721 AT |
887 | /* Default string compare functions, Allow arch asm/prom.h to override */ |
888 | #if !defined(of_compat_cmp) | |
889 | #define of_compat_cmp(s1, s2, l) strcasecmp((s1), (s2)) | |
890 | #define of_prop_cmp(s1, s2) strcmp((s1), (s2)) | |
891 | #define of_node_cmp(s1, s2) strcasecmp((s1), (s2)) | |
892 | #endif | |
893 | ||
0c3f061c RH |
894 | #if defined(CONFIG_OF) && defined(CONFIG_NUMA) |
895 | extern int of_node_to_nid(struct device_node *np); | |
896 | #else | |
c8fff7bc KK |
897 | static inline int of_node_to_nid(struct device_node *device) |
898 | { | |
899 | return NUMA_NO_NODE; | |
900 | } | |
5ca4db61 PM |
901 | #endif |
902 | ||
298535c0 DD |
903 | #ifdef CONFIG_OF_NUMA |
904 | extern int of_numa_init(void); | |
905 | #else | |
906 | static inline int of_numa_init(void) | |
907 | { | |
908 | return -ENOSYS; | |
909 | } | |
910 | #endif | |
911 | ||
662372e4 RH |
912 | static inline struct device_node *of_find_matching_node( |
913 | struct device_node *from, | |
914 | const struct of_device_id *matches) | |
915 | { | |
916 | return of_find_matching_node_and_match(from, matches, NULL); | |
917 | } | |
918 | ||
ad54a0cf HS |
919 | /** |
920 | * of_property_count_u8_elems - Count the number of u8 elements in a property | |
921 | * | |
922 | * @np: device node from which the property value is to be read. | |
923 | * @propname: name of the property to be searched. | |
924 | * | |
925 | * Search for a property in a device node and count the number of u8 elements | |
926 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
927 | * not exist or its length does not match a multiple of u8 and -ENODATA if the | |
928 | * property does not have a value. | |
929 | */ | |
930 | static inline int of_property_count_u8_elems(const struct device_node *np, | |
931 | const char *propname) | |
932 | { | |
933 | return of_property_count_elems_of_size(np, propname, sizeof(u8)); | |
934 | } | |
935 | ||
936 | /** | |
937 | * of_property_count_u16_elems - Count the number of u16 elements in a property | |
938 | * | |
939 | * @np: device node from which the property value is to be read. | |
940 | * @propname: name of the property to be searched. | |
941 | * | |
942 | * Search for a property in a device node and count the number of u16 elements | |
943 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
944 | * not exist or its length does not match a multiple of u16 and -ENODATA if the | |
945 | * property does not have a value. | |
946 | */ | |
947 | static inline int of_property_count_u16_elems(const struct device_node *np, | |
948 | const char *propname) | |
949 | { | |
950 | return of_property_count_elems_of_size(np, propname, sizeof(u16)); | |
951 | } | |
952 | ||
953 | /** | |
954 | * of_property_count_u32_elems - Count the number of u32 elements in a property | |
955 | * | |
956 | * @np: device node from which the property value is to be read. | |
957 | * @propname: name of the property to be searched. | |
958 | * | |
959 | * Search for a property in a device node and count the number of u32 elements | |
960 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
961 | * not exist or its length does not match a multiple of u32 and -ENODATA if the | |
962 | * property does not have a value. | |
963 | */ | |
964 | static inline int of_property_count_u32_elems(const struct device_node *np, | |
965 | const char *propname) | |
966 | { | |
967 | return of_property_count_elems_of_size(np, propname, sizeof(u32)); | |
968 | } | |
969 | ||
970 | /** | |
971 | * of_property_count_u64_elems - Count the number of u64 elements in a property | |
972 | * | |
973 | * @np: device node from which the property value is to be read. | |
974 | * @propname: name of the property to be searched. | |
975 | * | |
976 | * Search for a property in a device node and count the number of u64 elements | |
977 | * in it. Returns number of elements on sucess, -EINVAL if the property does | |
978 | * not exist or its length does not match a multiple of u64 and -ENODATA if the | |
979 | * property does not have a value. | |
980 | */ | |
981 | static inline int of_property_count_u64_elems(const struct device_node *np, | |
982 | const char *propname) | |
983 | { | |
984 | return of_property_count_elems_of_size(np, propname, sizeof(u64)); | |
985 | } | |
986 | ||
a87fa1d8 GL |
987 | /** |
988 | * of_property_read_string_array() - Read an array of strings from a multiple | |
989 | * strings property. | |
990 | * @np: device node from which the property value is to be read. | |
991 | * @propname: name of the property to be searched. | |
992 | * @out_strs: output array of string pointers. | |
993 | * @sz: number of array elements to read. | |
994 | * | |
995 | * Search for a property in a device tree node and retrieve a list of | |
996 | * terminated string values (pointer to data, not a copy) in that property. | |
997 | * | |
998 | * If @out_strs is NULL, the number of strings in the property is returned. | |
999 | */ | |
fe99c707 | 1000 | static inline int of_property_read_string_array(const struct device_node *np, |
a87fa1d8 GL |
1001 | const char *propname, const char **out_strs, |
1002 | size_t sz) | |
1003 | { | |
1004 | return of_property_read_string_helper(np, propname, out_strs, sz, 0); | |
1005 | } | |
1006 | ||
1007 | /** | |
1008 | * of_property_count_strings() - Find and return the number of strings from a | |
1009 | * multiple strings 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 tree node and retrieve the number of null | |
1014 | * terminated string contain in it. Returns the number of strings on | |
1015 | * success, -EINVAL if the property does not exist, -ENODATA if property | |
1016 | * does not have a value, and -EILSEQ if the string is not null-terminated | |
1017 | * within the length of the property data. | |
1018 | */ | |
fe99c707 | 1019 | static inline int of_property_count_strings(const struct device_node *np, |
a87fa1d8 GL |
1020 | const char *propname) |
1021 | { | |
1022 | return of_property_read_string_helper(np, propname, NULL, 0, 0); | |
1023 | } | |
1024 | ||
1025 | /** | |
1026 | * of_property_read_string_index() - Find and read a string from a multiple | |
1027 | * strings property. | |
1028 | * @np: device node from which the property value is to be read. | |
1029 | * @propname: name of the property to be searched. | |
1030 | * @index: index of the string in the list of strings | |
1031 | * @out_string: pointer to null terminated return string, modified only if | |
1032 | * return value is 0. | |
1033 | * | |
1034 | * Search for a property in a device tree node and retrieve a null | |
1035 | * terminated string value (pointer to data, not a copy) in the list of strings | |
1036 | * contained in that property. | |
1037 | * Returns 0 on success, -EINVAL if the property does not exist, -ENODATA if | |
1038 | * property does not have a value, and -EILSEQ if the string is not | |
1039 | * null-terminated within the length of the property data. | |
1040 | * | |
1041 | * The out_string pointer is modified only if a valid string can be decoded. | |
1042 | */ | |
fe99c707 | 1043 | static inline int of_property_read_string_index(const struct device_node *np, |
a87fa1d8 GL |
1044 | const char *propname, |
1045 | int index, const char **output) | |
1046 | { | |
1047 | int rc = of_property_read_string_helper(np, propname, output, 1, index); | |
1048 | return rc < 0 ? rc : 0; | |
1049 | } | |
1050 | ||
fa4d34cc JCPV |
1051 | /** |
1052 | * of_property_read_bool - Findfrom a property | |
1053 | * @np: device node from which the property value is to be read. | |
1054 | * @propname: name of the property to be searched. | |
1055 | * | |
1056 | * Search for a property in a device node. | |
31712c98 | 1057 | * Returns true if the property exists false otherwise. |
fa4d34cc JCPV |
1058 | */ |
1059 | static inline bool of_property_read_bool(const struct device_node *np, | |
1060 | const char *propname) | |
1061 | { | |
1062 | struct property *prop = of_find_property(np, propname, NULL); | |
1063 | ||
1064 | return prop ? true : false; | |
1065 | } | |
1066 | ||
be193249 VK |
1067 | static inline int of_property_read_u8(const struct device_node *np, |
1068 | const char *propname, | |
1069 | u8 *out_value) | |
1070 | { | |
1071 | return of_property_read_u8_array(np, propname, out_value, 1); | |
1072 | } | |
1073 | ||
1074 | static inline int of_property_read_u16(const struct device_node *np, | |
1075 | const char *propname, | |
1076 | u16 *out_value) | |
1077 | { | |
1078 | return of_property_read_u16_array(np, propname, out_value, 1); | |
1079 | } | |
1080 | ||
b98c0239 | 1081 | static inline int of_property_read_u32(const struct device_node *np, |
aac285c6 | 1082 | const char *propname, |
b98c0239 SG |
1083 | u32 *out_value) |
1084 | { | |
1085 | return of_property_read_u32_array(np, propname, out_value, 1); | |
1086 | } | |
1087 | ||
e7a00e42 SR |
1088 | static inline int of_property_read_s32(const struct device_node *np, |
1089 | const char *propname, | |
1090 | s32 *out_value) | |
1091 | { | |
1092 | return of_property_read_u32(np, propname, (u32*) out_value); | |
1093 | } | |
1094 | ||
f623ce95 JR |
1095 | #define of_for_each_phandle(it, err, np, ln, cn, cc) \ |
1096 | for (of_phandle_iterator_init((it), (np), (ln), (cn), (cc)), \ | |
1097 | err = of_phandle_iterator_next(it); \ | |
1098 | err == 0; \ | |
1099 | err = of_phandle_iterator_next(it)) | |
1100 | ||
2adfffa2 SAS |
1101 | #define of_property_for_each_u32(np, propname, prop, p, u) \ |
1102 | for (prop = of_find_property(np, propname, NULL), \ | |
1103 | p = of_prop_next_u32(prop, NULL, &u); \ | |
1104 | p; \ | |
1105 | p = of_prop_next_u32(prop, p, &u)) | |
1106 | ||
1107 | #define of_property_for_each_string(np, propname, prop, s) \ | |
1108 | for (prop = of_find_property(np, propname, NULL), \ | |
1109 | s = of_prop_next_string(prop, NULL); \ | |
1110 | s; \ | |
1111 | s = of_prop_next_string(prop, s)) | |
1112 | ||
662372e4 RH |
1113 | #define for_each_node_by_name(dn, name) \ |
1114 | for (dn = of_find_node_by_name(NULL, name); dn; \ | |
1115 | dn = of_find_node_by_name(dn, name)) | |
1116 | #define for_each_node_by_type(dn, type) \ | |
1117 | for (dn = of_find_node_by_type(NULL, type); dn; \ | |
1118 | dn = of_find_node_by_type(dn, type)) | |
1119 | #define for_each_compatible_node(dn, type, compatible) \ | |
1120 | for (dn = of_find_compatible_node(NULL, type, compatible); dn; \ | |
1121 | dn = of_find_compatible_node(dn, type, compatible)) | |
1122 | #define for_each_matching_node(dn, matches) \ | |
1123 | for (dn = of_find_matching_node(NULL, matches); dn; \ | |
1124 | dn = of_find_matching_node(dn, matches)) | |
1125 | #define for_each_matching_node_and_match(dn, matches, match) \ | |
1126 | for (dn = of_find_matching_node_and_match(NULL, matches, match); \ | |
1127 | dn; dn = of_find_matching_node_and_match(dn, matches, match)) | |
1128 | ||
1129 | #define for_each_child_of_node(parent, child) \ | |
1130 | for (child = of_get_next_child(parent, NULL); child != NULL; \ | |
1131 | child = of_get_next_child(parent, child)) | |
1132 | #define for_each_available_child_of_node(parent, child) \ | |
1133 | for (child = of_get_next_available_child(parent, NULL); child != NULL; \ | |
1134 | child = of_get_next_available_child(parent, child)) | |
1135 | ||
1136 | #define for_each_node_with_property(dn, prop_name) \ | |
1137 | for (dn = of_find_node_with_property(NULL, prop_name); dn; \ | |
1138 | dn = of_find_node_with_property(dn, prop_name)) | |
1139 | ||
1140 | static inline int of_get_child_count(const struct device_node *np) | |
1141 | { | |
1142 | struct device_node *child; | |
1143 | int num = 0; | |
1144 | ||
1145 | for_each_child_of_node(np, child) | |
1146 | num++; | |
1147 | ||
1148 | return num; | |
1149 | } | |
1150 | ||
1151 | static inline int of_get_available_child_count(const struct device_node *np) | |
1152 | { | |
1153 | struct device_node *child; | |
1154 | int num = 0; | |
1155 | ||
1156 | for_each_available_child_of_node(np, child) | |
1157 | num++; | |
1158 | ||
1159 | return num; | |
1160 | } | |
1161 | ||
71f50c6d | 1162 | #if defined(CONFIG_OF) && !defined(MODULE) |
54196ccb RH |
1163 | #define _OF_DECLARE(table, name, compat, fn, fn_type) \ |
1164 | static const struct of_device_id __of_table_##name \ | |
1165 | __used __section(__##table##_of_table) \ | |
1166 | = { .compatible = compat, \ | |
1167 | .data = (fn == (fn_type)NULL) ? fn : fn } | |
1168 | #else | |
5f563585 | 1169 | #define _OF_DECLARE(table, name, compat, fn, fn_type) \ |
54196ccb RH |
1170 | static const struct of_device_id __of_table_##name \ |
1171 | __attribute__((unused)) \ | |
1172 | = { .compatible = compat, \ | |
1173 | .data = (fn == (fn_type)NULL) ? fn : fn } | |
1174 | #endif | |
1175 | ||
1176 | typedef int (*of_init_fn_2)(struct device_node *, struct device_node *); | |
c35d9292 | 1177 | typedef int (*of_init_fn_1_ret)(struct device_node *); |
54196ccb RH |
1178 | typedef void (*of_init_fn_1)(struct device_node *); |
1179 | ||
1180 | #define OF_DECLARE_1(table, name, compat, fn) \ | |
1181 | _OF_DECLARE(table, name, compat, fn, of_init_fn_1) | |
c35d9292 DL |
1182 | #define OF_DECLARE_1_RET(table, name, compat, fn) \ |
1183 | _OF_DECLARE(table, name, compat, fn, of_init_fn_1_ret) | |
54196ccb RH |
1184 | #define OF_DECLARE_2(table, name, compat, fn) \ |
1185 | _OF_DECLARE(table, name, compat, fn, of_init_fn_2) | |
1186 | ||
201c910b PA |
1187 | /** |
1188 | * struct of_changeset_entry - Holds a changeset entry | |
1189 | * | |
1190 | * @node: list_head for the log list | |
1191 | * @action: notifier action | |
1192 | * @np: pointer to the device node affected | |
1193 | * @prop: pointer to the property affected | |
1194 | * @old_prop: hold a pointer to the original property | |
1195 | * | |
1196 | * Every modification of the device tree during a changeset | |
1197 | * is held in a list of of_changeset_entry structures. | |
1198 | * That way we can recover from a partial application, or we can | |
1199 | * revert the changeset | |
1200 | */ | |
1201 | struct of_changeset_entry { | |
1202 | struct list_head node; | |
1203 | unsigned long action; | |
1204 | struct device_node *np; | |
1205 | struct property *prop; | |
1206 | struct property *old_prop; | |
1207 | }; | |
1208 | ||
1209 | /** | |
1210 | * struct of_changeset - changeset tracker structure | |
1211 | * | |
1212 | * @entries: list_head for the changeset entries | |
1213 | * | |
1214 | * changesets are a convenient way to apply bulk changes to the | |
1215 | * live tree. In case of an error, changes are rolled-back. | |
1216 | * changesets live on after initial application, and if not | |
1217 | * destroyed after use, they can be reverted in one single call. | |
1218 | */ | |
1219 | struct of_changeset { | |
1220 | struct list_head entries; | |
1221 | }; | |
1222 | ||
b53a2340 PA |
1223 | enum of_reconfig_change { |
1224 | OF_RECONFIG_NO_CHANGE = 0, | |
1225 | OF_RECONFIG_CHANGE_ADD, | |
1226 | OF_RECONFIG_CHANGE_REMOVE, | |
1227 | }; | |
1228 | ||
201c910b | 1229 | #ifdef CONFIG_OF_DYNAMIC |
f6892d19 GL |
1230 | extern int of_reconfig_notifier_register(struct notifier_block *); |
1231 | extern int of_reconfig_notifier_unregister(struct notifier_block *); | |
f5242e5a GL |
1232 | extern int of_reconfig_notify(unsigned long, struct of_reconfig_data *rd); |
1233 | extern int of_reconfig_get_state_change(unsigned long action, | |
1234 | struct of_reconfig_data *arg); | |
f6892d19 | 1235 | |
201c910b PA |
1236 | extern void of_changeset_init(struct of_changeset *ocs); |
1237 | extern void of_changeset_destroy(struct of_changeset *ocs); | |
1238 | extern int of_changeset_apply(struct of_changeset *ocs); | |
1239 | extern int of_changeset_revert(struct of_changeset *ocs); | |
1240 | extern int of_changeset_action(struct of_changeset *ocs, | |
1241 | unsigned long action, struct device_node *np, | |
1242 | struct property *prop); | |
1243 | ||
1244 | static inline int of_changeset_attach_node(struct of_changeset *ocs, | |
1245 | struct device_node *np) | |
1246 | { | |
1247 | return of_changeset_action(ocs, OF_RECONFIG_ATTACH_NODE, np, NULL); | |
1248 | } | |
1249 | ||
1250 | static inline int of_changeset_detach_node(struct of_changeset *ocs, | |
1251 | struct device_node *np) | |
1252 | { | |
1253 | return of_changeset_action(ocs, OF_RECONFIG_DETACH_NODE, np, NULL); | |
1254 | } | |
1255 | ||
1256 | static inline int of_changeset_add_property(struct of_changeset *ocs, | |
1257 | struct device_node *np, struct property *prop) | |
1258 | { | |
1259 | return of_changeset_action(ocs, OF_RECONFIG_ADD_PROPERTY, np, prop); | |
1260 | } | |
1261 | ||
1262 | static inline int of_changeset_remove_property(struct of_changeset *ocs, | |
1263 | struct device_node *np, struct property *prop) | |
1264 | { | |
1265 | return of_changeset_action(ocs, OF_RECONFIG_REMOVE_PROPERTY, np, prop); | |
1266 | } | |
1267 | ||
1268 | static inline int of_changeset_update_property(struct of_changeset *ocs, | |
1269 | struct device_node *np, struct property *prop) | |
1270 | { | |
1271 | return of_changeset_action(ocs, OF_RECONFIG_UPDATE_PROPERTY, np, prop); | |
1272 | } | |
f6892d19 GL |
1273 | #else /* CONFIG_OF_DYNAMIC */ |
1274 | static inline int of_reconfig_notifier_register(struct notifier_block *nb) | |
1275 | { | |
1276 | return -EINVAL; | |
1277 | } | |
1278 | static inline int of_reconfig_notifier_unregister(struct notifier_block *nb) | |
1279 | { | |
1280 | return -EINVAL; | |
1281 | } | |
f5242e5a GL |
1282 | static inline int of_reconfig_notify(unsigned long action, |
1283 | struct of_reconfig_data *arg) | |
f6892d19 GL |
1284 | { |
1285 | return -EINVAL; | |
1286 | } | |
f5242e5a GL |
1287 | static inline int of_reconfig_get_state_change(unsigned long action, |
1288 | struct of_reconfig_data *arg) | |
f6892d19 GL |
1289 | { |
1290 | return -EINVAL; | |
1291 | } | |
1292 | #endif /* CONFIG_OF_DYNAMIC */ | |
201c910b | 1293 | |
7941b27b PA |
1294 | /* CONFIG_OF_RESOLVE api */ |
1295 | extern int of_resolve_phandles(struct device_node *tree); | |
1296 | ||
a4b4e046 | 1297 | /** |
8f73110f | 1298 | * of_device_is_system_power_controller - Tells if system-power-controller is found for device_node |
a4b4e046 RP |
1299 | * @np: Pointer to the given device_node |
1300 | * | |
1301 | * return true if present false otherwise | |
1302 | */ | |
8f73110f | 1303 | static inline bool of_device_is_system_power_controller(const struct device_node *np) |
a4b4e046 | 1304 | { |
8f73110f | 1305 | return of_property_read_bool(np, "system-power-controller"); |
a4b4e046 RP |
1306 | } |
1307 | ||
7518b589 PA |
1308 | /** |
1309 | * Overlay support | |
1310 | */ | |
1311 | ||
39a842e2 AT |
1312 | enum of_overlay_notify_action { |
1313 | OF_OVERLAY_PRE_APPLY, | |
1314 | OF_OVERLAY_POST_APPLY, | |
1315 | OF_OVERLAY_PRE_REMOVE, | |
1316 | OF_OVERLAY_POST_REMOVE, | |
1317 | }; | |
1318 | ||
1319 | struct of_overlay_notify_data { | |
1320 | struct device_node *overlay; | |
1321 | struct device_node *target; | |
1322 | }; | |
1323 | ||
7518b589 PA |
1324 | #ifdef CONFIG_OF_OVERLAY |
1325 | ||
1326 | /* ID based overlays; the API for external users */ | |
1327 | int of_overlay_create(struct device_node *tree); | |
1328 | int of_overlay_destroy(int id); | |
1329 | int of_overlay_destroy_all(void); | |
1330 | ||
39a842e2 AT |
1331 | int of_overlay_notifier_register(struct notifier_block *nb); |
1332 | int of_overlay_notifier_unregister(struct notifier_block *nb); | |
1333 | ||
7518b589 PA |
1334 | #else |
1335 | ||
1336 | static inline int of_overlay_create(struct device_node *tree) | |
1337 | { | |
1338 | return -ENOTSUPP; | |
1339 | } | |
1340 | ||
1341 | static inline int of_overlay_destroy(int id) | |
1342 | { | |
1343 | return -ENOTSUPP; | |
1344 | } | |
1345 | ||
1346 | static inline int of_overlay_destroy_all(void) | |
1347 | { | |
1348 | return -ENOTSUPP; | |
1349 | } | |
1350 | ||
39a842e2 AT |
1351 | static inline int of_overlay_notifier_register(struct notifier_block *nb) |
1352 | { | |
1353 | return 0; | |
1354 | } | |
1355 | ||
1356 | static inline int of_overlay_notifier_unregister(struct notifier_block *nb) | |
1357 | { | |
1358 | return 0; | |
1359 | } | |
1360 | ||
7518b589 PA |
1361 | #endif |
1362 | ||
76c1ce78 | 1363 | #endif /* _LINUX_OF_H */ |