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