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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * property.h - Unified device property interface.
4 *
5 * Copyright (C) 2014, Intel Corporation
6 * Authors: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
7 * Mika Westerberg <mika.westerberg@linux.intel.com>
8 */
9
10#ifndef _LINUX_PROPERTY_H_
11#define _LINUX_PROPERTY_H_
12
13#include <linux/args.h>
14#include <linux/array_size.h>
15#include <linux/bits.h>
16#include <linux/cleanup.h>
17#include <linux/fwnode.h>
18#include <linux/stddef.h>
19#include <linux/types.h>
20#include <linux/util_macros.h>
21
22struct device;
23
24enum dev_prop_type {
25 DEV_PROP_U8,
26 DEV_PROP_U16,
27 DEV_PROP_U32,
28 DEV_PROP_U64,
29 DEV_PROP_STRING,
30 DEV_PROP_REF,
31};
32
33const struct fwnode_handle *__dev_fwnode_const(const struct device *dev);
34struct fwnode_handle *__dev_fwnode(struct device *dev);
35#define dev_fwnode(dev) \
36 _Generic((dev), \
37 const struct device *: __dev_fwnode_const, \
38 struct device *: __dev_fwnode)(dev)
39
40bool device_property_present(const struct device *dev, const char *propname);
41bool device_property_read_bool(const struct device *dev, const char *propname);
42int device_property_read_u8_array(const struct device *dev, const char *propname,
43 u8 *val, size_t nval);
44int device_property_read_u16_array(const struct device *dev, const char *propname,
45 u16 *val, size_t nval);
46int device_property_read_u32_array(const struct device *dev, const char *propname,
47 u32 *val, size_t nval);
48int device_property_read_u64_array(const struct device *dev, const char *propname,
49 u64 *val, size_t nval);
50int device_property_read_string_array(const struct device *dev, const char *propname,
51 const char **val, size_t nval);
52int device_property_read_string(const struct device *dev, const char *propname,
53 const char **val);
54int device_property_match_string(const struct device *dev,
55 const char *propname, const char *string);
56
57bool fwnode_property_present(const struct fwnode_handle *fwnode,
58 const char *propname);
59bool fwnode_property_read_bool(const struct fwnode_handle *fwnode,
60 const char *propname);
61int fwnode_property_read_u8_array(const struct fwnode_handle *fwnode,
62 const char *propname, u8 *val,
63 size_t nval);
64int fwnode_property_read_u16_array(const struct fwnode_handle *fwnode,
65 const char *propname, u16 *val,
66 size_t nval);
67int fwnode_property_read_u32_array(const struct fwnode_handle *fwnode,
68 const char *propname, u32 *val,
69 size_t nval);
70int fwnode_property_read_u64_array(const struct fwnode_handle *fwnode,
71 const char *propname, u64 *val,
72 size_t nval);
73int fwnode_property_read_string_array(const struct fwnode_handle *fwnode,
74 const char *propname, const char **val,
75 size_t nval);
76int fwnode_property_read_string(const struct fwnode_handle *fwnode,
77 const char *propname, const char **val);
78int fwnode_property_match_string(const struct fwnode_handle *fwnode,
79 const char *propname, const char *string);
80
81bool fwnode_device_is_available(const struct fwnode_handle *fwnode);
82
83static inline bool fwnode_device_is_big_endian(const struct fwnode_handle *fwnode)
84{
85 if (fwnode_property_present(fwnode, propname: "big-endian"))
86 return true;
87 if (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN) &&
88 fwnode_property_present(fwnode, propname: "native-endian"))
89 return true;
90 return false;
91}
92
93static inline
94bool fwnode_device_is_compatible(const struct fwnode_handle *fwnode, const char *compat)
95{
96 return fwnode_property_match_string(fwnode, propname: "compatible", string: compat) >= 0;
97}
98
99/**
100 * device_is_big_endian - check if a device has BE registers
101 * @dev: Pointer to the struct device
102 *
103 * Returns: true if the device has a "big-endian" property, or if the kernel
104 * was compiled for BE *and* the device has a "native-endian" property.
105 * Returns false otherwise.
106 *
107 * Callers would nominally use ioread32be/iowrite32be if
108 * device_is_big_endian() == true, or readl/writel otherwise.
109 */
110static inline bool device_is_big_endian(const struct device *dev)
111{
112 return fwnode_device_is_big_endian(dev_fwnode(dev));
113}
114
115/**
116 * device_is_compatible - match 'compatible' property of the device with a given string
117 * @dev: Pointer to the struct device
118 * @compat: The string to match 'compatible' property with
119 *
120 * Returns: true if matches, otherwise false.
121 */
122static inline bool device_is_compatible(const struct device *dev, const char *compat)
123{
124 return fwnode_device_is_compatible(dev_fwnode(dev), compat);
125}
126
127int fwnode_property_match_property_string(const struct fwnode_handle *fwnode,
128 const char *propname,
129 const char * const *array, size_t n);
130
131static inline
132int device_property_match_property_string(const struct device *dev,
133 const char *propname,
134 const char * const *array, size_t n)
135{
136 return fwnode_property_match_property_string(dev_fwnode(dev), propname, array, n);
137}
138
139int fwnode_property_get_reference_args(const struct fwnode_handle *fwnode,
140 const char *prop, const char *nargs_prop,
141 unsigned int nargs, unsigned int index,
142 struct fwnode_reference_args *args);
143
144struct fwnode_handle *fwnode_find_reference(const struct fwnode_handle *fwnode,
145 const char *name,
146 unsigned int index);
147
148const char *fwnode_get_name(const struct fwnode_handle *fwnode);
149const char *fwnode_get_name_prefix(const struct fwnode_handle *fwnode);
150bool fwnode_name_eq(const struct fwnode_handle *fwnode, const char *name);
151
152struct fwnode_handle *fwnode_get_parent(const struct fwnode_handle *fwnode);
153struct fwnode_handle *fwnode_get_next_parent(struct fwnode_handle *fwnode);
154
155#define fwnode_for_each_parent_node(fwnode, parent) \
156 for (parent = fwnode_get_parent(fwnode); parent; \
157 parent = fwnode_get_next_parent(parent))
158
159unsigned int fwnode_count_parents(const struct fwnode_handle *fwn);
160struct fwnode_handle *fwnode_get_nth_parent(struct fwnode_handle *fwn,
161 unsigned int depth);
162struct fwnode_handle *fwnode_get_next_child_node(
163 const struct fwnode_handle *fwnode, struct fwnode_handle *child);
164struct fwnode_handle *fwnode_get_next_available_child_node(
165 const struct fwnode_handle *fwnode, struct fwnode_handle *child);
166
167#define fwnode_for_each_child_node(fwnode, child) \
168 for (child = fwnode_get_next_child_node(fwnode, NULL); child; \
169 child = fwnode_get_next_child_node(fwnode, child))
170
171#define fwnode_for_each_named_child_node(fwnode, child, name) \
172 fwnode_for_each_child_node(fwnode, child) \
173 for_each_if(fwnode_name_eq(child, name))
174
175#define fwnode_for_each_available_child_node(fwnode, child) \
176 for (child = fwnode_get_next_available_child_node(fwnode, NULL); child;\
177 child = fwnode_get_next_available_child_node(fwnode, child))
178
179#define fwnode_for_each_child_node_scoped(fwnode, child) \
180 for (struct fwnode_handle *child __free(fwnode_handle) = \
181 fwnode_get_next_child_node(fwnode, NULL); \
182 child; child = fwnode_get_next_child_node(fwnode, child))
183
184#define fwnode_for_each_available_child_node_scoped(fwnode, child) \
185 for (struct fwnode_handle *child __free(fwnode_handle) = \
186 fwnode_get_next_available_child_node(fwnode, NULL); \
187 child; child = fwnode_get_next_available_child_node(fwnode, child))
188
189struct fwnode_handle *device_get_next_child_node(const struct device *dev,
190 struct fwnode_handle *child);
191
192#define device_for_each_child_node(dev, child) \
193 for (child = device_get_next_child_node(dev, NULL); child; \
194 child = device_get_next_child_node(dev, child))
195
196#define device_for_each_named_child_node(dev, child, name) \
197 device_for_each_child_node(dev, child) \
198 for_each_if(fwnode_name_eq(child, name))
199
200#define device_for_each_child_node_scoped(dev, child) \
201 for (struct fwnode_handle *child __free(fwnode_handle) = \
202 device_get_next_child_node(dev, NULL); \
203 child; child = device_get_next_child_node(dev, child))
204
205#define device_for_each_named_child_node_scoped(dev, child, name) \
206 device_for_each_child_node_scoped(dev, child) \
207 for_each_if(fwnode_name_eq(child, name))
208
209struct fwnode_handle *fwnode_get_named_child_node(const struct fwnode_handle *fwnode,
210 const char *childname);
211struct fwnode_handle *device_get_named_child_node(const struct device *dev,
212 const char *childname);
213
214struct fwnode_handle *fwnode_handle_get(struct fwnode_handle *fwnode);
215
216/**
217 * fwnode_handle_put - Drop reference to a device node
218 * @fwnode: Pointer to the device node to drop the reference to.
219 *
220 * This has to be used when terminating device_for_each_child_node() iteration
221 * with break or return to prevent stale device node references from being left
222 * behind.
223 */
224static inline void fwnode_handle_put(struct fwnode_handle *fwnode)
225{
226 fwnode_call_void_op(fwnode, put);
227}
228
229DEFINE_FREE(fwnode_handle, struct fwnode_handle *, fwnode_handle_put(_T))
230
231int fwnode_irq_get(const struct fwnode_handle *fwnode, unsigned int index);
232int fwnode_irq_get_byname(const struct fwnode_handle *fwnode, const char *name);
233
234unsigned int fwnode_get_child_node_count(const struct fwnode_handle *fwnode);
235
236static inline unsigned int device_get_child_node_count(const struct device *dev)
237{
238 return fwnode_get_child_node_count(dev_fwnode(dev));
239}
240
241unsigned int fwnode_get_named_child_node_count(const struct fwnode_handle *fwnode,
242 const char *name);
243static inline unsigned int device_get_named_child_node_count(const struct device *dev,
244 const char *name)
245{
246 return fwnode_get_named_child_node_count(dev_fwnode(dev), name);
247}
248
249static inline int device_property_read_u8(const struct device *dev,
250 const char *propname, u8 *val)
251{
252 return device_property_read_u8_array(dev, propname, val, nval: 1);
253}
254
255static inline int device_property_read_u16(const struct device *dev,
256 const char *propname, u16 *val)
257{
258 return device_property_read_u16_array(dev, propname, val, nval: 1);
259}
260
261static inline int device_property_read_u32(const struct device *dev,
262 const char *propname, u32 *val)
263{
264 return device_property_read_u32_array(dev, propname, val, nval: 1);
265}
266
267static inline int device_property_read_u64(const struct device *dev,
268 const char *propname, u64 *val)
269{
270 return device_property_read_u64_array(dev, propname, val, nval: 1);
271}
272
273static inline int device_property_count_u8(const struct device *dev, const char *propname)
274{
275 return device_property_read_u8_array(dev, propname, NULL, nval: 0);
276}
277
278static inline int device_property_count_u16(const struct device *dev, const char *propname)
279{
280 return device_property_read_u16_array(dev, propname, NULL, nval: 0);
281}
282
283static inline int device_property_count_u32(const struct device *dev, const char *propname)
284{
285 return device_property_read_u32_array(dev, propname, NULL, nval: 0);
286}
287
288static inline int device_property_count_u64(const struct device *dev, const char *propname)
289{
290 return device_property_read_u64_array(dev, propname, NULL, nval: 0);
291}
292
293static inline int device_property_string_array_count(const struct device *dev,
294 const char *propname)
295{
296 return device_property_read_string_array(dev, propname, NULL, nval: 0);
297}
298
299static inline int fwnode_property_read_u8(const struct fwnode_handle *fwnode,
300 const char *propname, u8 *val)
301{
302 return fwnode_property_read_u8_array(fwnode, propname, val, nval: 1);
303}
304
305static inline int fwnode_property_read_u16(const struct fwnode_handle *fwnode,
306 const char *propname, u16 *val)
307{
308 return fwnode_property_read_u16_array(fwnode, propname, val, nval: 1);
309}
310
311static inline int fwnode_property_read_u32(const struct fwnode_handle *fwnode,
312 const char *propname, u32 *val)
313{
314 return fwnode_property_read_u32_array(fwnode, propname, val, nval: 1);
315}
316
317static inline int fwnode_property_read_u64(const struct fwnode_handle *fwnode,
318 const char *propname, u64 *val)
319{
320 return fwnode_property_read_u64_array(fwnode, propname, val, nval: 1);
321}
322
323static inline int fwnode_property_count_u8(const struct fwnode_handle *fwnode,
324 const char *propname)
325{
326 return fwnode_property_read_u8_array(fwnode, propname, NULL, nval: 0);
327}
328
329static inline int fwnode_property_count_u16(const struct fwnode_handle *fwnode,
330 const char *propname)
331{
332 return fwnode_property_read_u16_array(fwnode, propname, NULL, nval: 0);
333}
334
335static inline int fwnode_property_count_u32(const struct fwnode_handle *fwnode,
336 const char *propname)
337{
338 return fwnode_property_read_u32_array(fwnode, propname, NULL, nval: 0);
339}
340
341static inline int fwnode_property_count_u64(const struct fwnode_handle *fwnode,
342 const char *propname)
343{
344 return fwnode_property_read_u64_array(fwnode, propname, NULL, nval: 0);
345}
346
347static inline int
348fwnode_property_string_array_count(const struct fwnode_handle *fwnode,
349 const char *propname)
350{
351 return fwnode_property_read_string_array(fwnode, propname, NULL, nval: 0);
352}
353
354struct software_node;
355
356/**
357 * struct software_node_ref_args - Reference property with additional arguments
358 * @swnode: Reference to a software node
359 * @fwnode: Alternative reference to a firmware node handle
360 * @nargs: Number of elements in @args array
361 * @args: Integer arguments
362 */
363struct software_node_ref_args {
364 const struct software_node *swnode;
365 struct fwnode_handle *fwnode;
366 unsigned int nargs;
367 u64 args[NR_FWNODE_REFERENCE_ARGS];
368};
369
370#define SOFTWARE_NODE_REFERENCE(_ref_, ...) \
371(const struct software_node_ref_args) { \
372 .swnode = _Generic(_ref_, \
373 const struct software_node *: _ref_, \
374 struct software_node *: _ref_, \
375 default: NULL), \
376 .fwnode = _Generic(_ref_, \
377 struct fwnode_handle *: _ref_, \
378 default: NULL), \
379 .nargs = COUNT_ARGS(__VA_ARGS__), \
380 .args = { __VA_ARGS__ }, \
381}
382
383/**
384 * struct property_entry - "Built-in" device property representation.
385 * @name: Name of the property.
386 * @length: Length of data making up the value.
387 * @is_inline: True when the property value is stored inline.
388 * @type: Type of the data in unions.
389 * @pointer: Pointer to the property when it is not stored inline.
390 * @value: Value of the property when it is stored inline.
391 */
392struct property_entry {
393 const char *name;
394 size_t length;
395 bool is_inline;
396 enum dev_prop_type type;
397 union {
398 const void *pointer;
399 union {
400 u8 u8_data[sizeof(u64) / sizeof(u8)];
401 u16 u16_data[sizeof(u64) / sizeof(u16)];
402 u32 u32_data[sizeof(u64) / sizeof(u32)];
403 u64 u64_data[sizeof(u64) / sizeof(u64)];
404 const char *str[sizeof(u64) / sizeof(char *)];
405 } value;
406 };
407};
408
409/*
410 * Note: the below initializers for the anonymous union are carefully
411 * crafted to avoid gcc-4.4.4's problems with initialization of anon unions
412 * and structs.
413 */
414#define __PROPERTY_ENTRY_ARRAY_LEN(_name_, _elem_, _Type_, _val_, _len_) \
415(struct property_entry) { \
416 .name = _name_, \
417 .length = (_len_) * sizeof_field(struct property_entry, value._elem_[0]), \
418 .type = DEV_PROP_##_Type_, \
419 { .pointer = _val_ }, \
420}
421
422#define PROPERTY_ENTRY_U8_ARRAY_LEN(_name_, _val_, _len_) \
423 __PROPERTY_ENTRY_ARRAY_LEN(_name_, u8_data, U8, _val_, _len_)
424#define PROPERTY_ENTRY_U16_ARRAY_LEN(_name_, _val_, _len_) \
425 __PROPERTY_ENTRY_ARRAY_LEN(_name_, u16_data, U16, _val_, _len_)
426#define PROPERTY_ENTRY_U32_ARRAY_LEN(_name_, _val_, _len_) \
427 __PROPERTY_ENTRY_ARRAY_LEN(_name_, u32_data, U32, _val_, _len_)
428#define PROPERTY_ENTRY_U64_ARRAY_LEN(_name_, _val_, _len_) \
429 __PROPERTY_ENTRY_ARRAY_LEN(_name_, u64_data, U64, _val_, _len_)
430#define PROPERTY_ENTRY_STRING_ARRAY_LEN(_name_, _val_, _len_) \
431 __PROPERTY_ENTRY_ARRAY_LEN(_name_, str, STRING, _val_, _len_)
432
433#define PROPERTY_ENTRY_REF_ARRAY_LEN(_name_, _val_, _len_) \
434(struct property_entry) { \
435 .name = _name_, \
436 .length = (_len_) * sizeof(struct software_node_ref_args), \
437 .type = DEV_PROP_REF, \
438 { .pointer = _val_ }, \
439}
440
441#define PROPERTY_ENTRY_U8_ARRAY(_name_, _val_) \
442 PROPERTY_ENTRY_U8_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
443#define PROPERTY_ENTRY_U16_ARRAY(_name_, _val_) \
444 PROPERTY_ENTRY_U16_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
445#define PROPERTY_ENTRY_U32_ARRAY(_name_, _val_) \
446 PROPERTY_ENTRY_U32_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
447#define PROPERTY_ENTRY_U64_ARRAY(_name_, _val_) \
448 PROPERTY_ENTRY_U64_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
449#define PROPERTY_ENTRY_STRING_ARRAY(_name_, _val_) \
450 PROPERTY_ENTRY_STRING_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
451#define PROPERTY_ENTRY_REF_ARRAY(_name_, _val_) \
452 PROPERTY_ENTRY_REF_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
453
454#define __PROPERTY_ENTRY_ELEMENT(_name_, _elem_, _Type_, _val_) \
455(struct property_entry) { \
456 .name = _name_, \
457 .length = sizeof_field(struct property_entry, value._elem_[0]), \
458 .is_inline = true, \
459 .type = DEV_PROP_##_Type_, \
460 { .value = { ._elem_[0] = _val_ } }, \
461}
462
463#define PROPERTY_ENTRY_U8(_name_, _val_) \
464 __PROPERTY_ENTRY_ELEMENT(_name_, u8_data, U8, _val_)
465#define PROPERTY_ENTRY_U16(_name_, _val_) \
466 __PROPERTY_ENTRY_ELEMENT(_name_, u16_data, U16, _val_)
467#define PROPERTY_ENTRY_U32(_name_, _val_) \
468 __PROPERTY_ENTRY_ELEMENT(_name_, u32_data, U32, _val_)
469#define PROPERTY_ENTRY_U64(_name_, _val_) \
470 __PROPERTY_ENTRY_ELEMENT(_name_, u64_data, U64, _val_)
471#define PROPERTY_ENTRY_STRING(_name_, _val_) \
472 __PROPERTY_ENTRY_ELEMENT(_name_, str, STRING, _val_)
473
474#define PROPERTY_ENTRY_REF(_name_, _ref_, ...) \
475(struct property_entry) { \
476 .name = _name_, \
477 .length = sizeof(struct software_node_ref_args), \
478 .type = DEV_PROP_REF, \
479 { .pointer = &SOFTWARE_NODE_REFERENCE(_ref_, ##__VA_ARGS__), }, \
480}
481
482#define PROPERTY_ENTRY_BOOL(_name_) \
483(struct property_entry) { \
484 .name = _name_, \
485 .is_inline = true, \
486}
487
488struct property_entry *
489property_entries_dup(const struct property_entry *properties);
490void property_entries_free(const struct property_entry *properties);
491
492bool device_dma_supported(const struct device *dev);
493enum dev_dma_attr device_get_dma_attr(const struct device *dev);
494
495const void *device_get_match_data(const struct device *dev);
496
497int device_get_phy_mode(struct device *dev);
498int fwnode_get_phy_mode(const struct fwnode_handle *fwnode);
499
500void __iomem *fwnode_iomap(struct fwnode_handle *fwnode, int index);
501
502struct fwnode_handle *fwnode_graph_get_next_endpoint(
503 const struct fwnode_handle *fwnode, struct fwnode_handle *prev);
504struct fwnode_handle *
505fwnode_graph_get_port_parent(const struct fwnode_handle *fwnode);
506struct fwnode_handle *fwnode_graph_get_remote_port_parent(
507 const struct fwnode_handle *fwnode);
508struct fwnode_handle *fwnode_graph_get_remote_port(
509 const struct fwnode_handle *fwnode);
510struct fwnode_handle *fwnode_graph_get_remote_endpoint(
511 const struct fwnode_handle *fwnode);
512
513static inline bool fwnode_graph_is_endpoint(const struct fwnode_handle *fwnode)
514{
515 return fwnode_property_present(fwnode, propname: "remote-endpoint");
516}
517
518/*
519 * Fwnode lookup flags
520 *
521 * @FWNODE_GRAPH_ENDPOINT_NEXT: In the case of no exact match, look for the
522 * closest endpoint ID greater than the specified
523 * one.
524 * @FWNODE_GRAPH_DEVICE_DISABLED: That the device to which the remote
525 * endpoint of the given endpoint belongs to,
526 * may be disabled, or that the endpoint is not
527 * connected.
528 */
529#define FWNODE_GRAPH_ENDPOINT_NEXT BIT(0)
530#define FWNODE_GRAPH_DEVICE_DISABLED BIT(1)
531
532struct fwnode_handle *
533fwnode_graph_get_endpoint_by_id(const struct fwnode_handle *fwnode,
534 u32 port, u32 endpoint, unsigned long flags);
535unsigned int fwnode_graph_get_endpoint_count(const struct fwnode_handle *fwnode,
536 unsigned long flags);
537
538#define fwnode_graph_for_each_endpoint(fwnode, child) \
539 for (child = fwnode_graph_get_next_endpoint(fwnode, NULL); child; \
540 child = fwnode_graph_get_next_endpoint(fwnode, child))
541
542int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
543 struct fwnode_endpoint *endpoint);
544
545typedef void *(*devcon_match_fn_t)(const struct fwnode_handle *fwnode, const char *id,
546 void *data);
547
548void *fwnode_connection_find_match(const struct fwnode_handle *fwnode,
549 const char *con_id, void *data,
550 devcon_match_fn_t match);
551
552static inline void *device_connection_find_match(const struct device *dev,
553 const char *con_id, void *data,
554 devcon_match_fn_t match)
555{
556 return fwnode_connection_find_match(dev_fwnode(dev), con_id, data, match);
557}
558
559int fwnode_connection_find_matches(const struct fwnode_handle *fwnode,
560 const char *con_id, void *data,
561 devcon_match_fn_t match,
562 void **matches, unsigned int matches_len);
563
564/* -------------------------------------------------------------------------- */
565/* Software fwnode support - when HW description is incomplete or missing */
566
567/**
568 * struct software_node - Software node description
569 * @name: Name of the software node
570 * @parent: Parent of the software node
571 * @properties: Array of device properties
572 */
573struct software_node {
574 const char *name;
575 const struct software_node *parent;
576 const struct property_entry *properties;
577};
578
579#define SOFTWARE_NODE(_name_, _properties_, _parent_) \
580 (struct software_node) { \
581 .name = _name_, \
582 .properties = _properties_, \
583 .parent = _parent_, \
584 }
585
586bool is_software_node(const struct fwnode_handle *fwnode);
587const struct software_node *
588to_software_node(const struct fwnode_handle *fwnode);
589struct fwnode_handle *software_node_fwnode(const struct software_node *node);
590
591const struct software_node *
592software_node_find_by_name(const struct software_node *parent,
593 const char *name);
594
595int software_node_register_node_group(const struct software_node * const *node_group);
596void software_node_unregister_node_group(const struct software_node * const *node_group);
597
598int software_node_register(const struct software_node *node);
599void software_node_unregister(const struct software_node *node);
600
601struct fwnode_handle *
602fwnode_create_software_node(const struct property_entry *properties,
603 const struct fwnode_handle *parent);
604void fwnode_remove_software_node(struct fwnode_handle *fwnode);
605
606int device_add_software_node(struct device *dev, const struct software_node *node);
607void device_remove_software_node(struct device *dev);
608
609int device_create_managed_software_node(struct device *dev,
610 const struct property_entry *properties,
611 const struct software_node *parent);
612
613#endif /* _LINUX_PROPERTY_H_ */
614

source code of linux/include/linux/property.h