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
22 struct device;
23
24 enum 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
33 const struct fwnode_handle *__dev_fwnode_const(const struct device *dev);
34 struct 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
40 bool device_property_present(const struct device *dev, const char *propname);
41 bool device_property_read_bool(const struct device *dev, const char *propname);
42 int device_property_read_u8_array(const struct device *dev, const char *propname,
43 u8 *val, size_t nval);
44 int device_property_read_u16_array(const struct device *dev, const char *propname,
45 u16 *val, size_t nval);
46 int device_property_read_u32_array(const struct device *dev, const char *propname,
47 u32 *val, size_t nval);
48 int device_property_read_u64_array(const struct device *dev, const char *propname,
49 u64 *val, size_t nval);
50 int device_property_read_string_array(const struct device *dev, const char *propname,
51 const char **val, size_t nval);
52 int device_property_read_string(const struct device *dev, const char *propname,
53 const char **val);
54 int device_property_match_string(const struct device *dev,
55 const char *propname, const char *string);
56
57 bool fwnode_property_present(const struct fwnode_handle *fwnode,
58 const char *propname);
59 bool fwnode_property_read_bool(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 unsigned int fwnode_count_parents(const struct fwnode_handle *fwn);
160 struct fwnode_handle *fwnode_get_nth_parent(struct fwnode_handle *fwn,
161 unsigned int depth);
162 struct fwnode_handle *fwnode_get_next_child_node(
163 const struct fwnode_handle *fwnode, struct fwnode_handle *child);
164 struct 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 struct fwnode_handle *device_get_next_child_node(const struct device *dev,
180 struct fwnode_handle *child);
181
182 #define device_for_each_child_node(dev, child) \
183 for (child = device_get_next_child_node(dev, NULL); child; \
184 child = device_get_next_child_node(dev, child))
185
186 #define device_for_each_named_child_node(dev, child, name) \
187 device_for_each_child_node(dev, child) \
188 for_each_if(fwnode_name_eq(child, name))
189
190 #define device_for_each_child_node_scoped(dev, child) \
191 for (struct fwnode_handle *child __free(fwnode_handle) = \
192 device_get_next_child_node(dev, NULL); \
193 child; child = device_get_next_child_node(dev, child))
194
195 #define device_for_each_named_child_node_scoped(dev, child, name) \
196 device_for_each_child_node_scoped(dev, child) \
197 for_each_if(fwnode_name_eq(child, name))
198
199 struct fwnode_handle *fwnode_get_named_child_node(const struct fwnode_handle *fwnode,
200 const char *childname);
201 struct fwnode_handle *device_get_named_child_node(const struct device *dev,
202 const char *childname);
203
204 struct fwnode_handle *fwnode_handle_get(struct fwnode_handle *fwnode);
205
206 /**
207 * fwnode_handle_put - Drop reference to a device node
208 * @fwnode: Pointer to the device node to drop the reference to.
209 *
210 * This has to be used when terminating device_for_each_child_node() iteration
211 * with break or return to prevent stale device node references from being left
212 * behind.
213 */
fwnode_handle_put(struct fwnode_handle * fwnode)214 static inline void fwnode_handle_put(struct fwnode_handle *fwnode)
215 {
216 fwnode_call_void_op(fwnode, put);
217 }
218
219 DEFINE_FREE(fwnode_handle, struct fwnode_handle *, fwnode_handle_put(_T))
220
221 int fwnode_irq_get(const struct fwnode_handle *fwnode, unsigned int index);
222 int fwnode_irq_get_byname(const struct fwnode_handle *fwnode, const char *name);
223
224 unsigned int fwnode_get_child_node_count(const struct fwnode_handle *fwnode);
225
device_get_child_node_count(const struct device * dev)226 static inline unsigned int device_get_child_node_count(const struct device *dev)
227 {
228 return fwnode_get_child_node_count(dev_fwnode(dev));
229 }
230
231 unsigned int fwnode_get_named_child_node_count(const struct fwnode_handle *fwnode,
232 const char *name);
device_get_named_child_node_count(const struct device * dev,const char * name)233 static inline unsigned int device_get_named_child_node_count(const struct device *dev,
234 const char *name)
235 {
236 return fwnode_get_named_child_node_count(dev_fwnode(dev), name);
237 }
238
device_property_read_u8(const struct device * dev,const char * propname,u8 * val)239 static inline int device_property_read_u8(const struct device *dev,
240 const char *propname, u8 *val)
241 {
242 return device_property_read_u8_array(dev, propname, val, 1);
243 }
244
device_property_read_u16(const struct device * dev,const char * propname,u16 * val)245 static inline int device_property_read_u16(const struct device *dev,
246 const char *propname, u16 *val)
247 {
248 return device_property_read_u16_array(dev, propname, val, 1);
249 }
250
device_property_read_u32(const struct device * dev,const char * propname,u32 * val)251 static inline int device_property_read_u32(const struct device *dev,
252 const char *propname, u32 *val)
253 {
254 return device_property_read_u32_array(dev, propname, val, 1);
255 }
256
device_property_read_u64(const struct device * dev,const char * propname,u64 * val)257 static inline int device_property_read_u64(const struct device *dev,
258 const char *propname, u64 *val)
259 {
260 return device_property_read_u64_array(dev, propname, val, 1);
261 }
262
device_property_count_u8(const struct device * dev,const char * propname)263 static inline int device_property_count_u8(const struct device *dev, const char *propname)
264 {
265 return device_property_read_u8_array(dev, propname, NULL, 0);
266 }
267
device_property_count_u16(const struct device * dev,const char * propname)268 static inline int device_property_count_u16(const struct device *dev, const char *propname)
269 {
270 return device_property_read_u16_array(dev, propname, NULL, 0);
271 }
272
device_property_count_u32(const struct device * dev,const char * propname)273 static inline int device_property_count_u32(const struct device *dev, const char *propname)
274 {
275 return device_property_read_u32_array(dev, propname, NULL, 0);
276 }
277
device_property_count_u64(const struct device * dev,const char * propname)278 static inline int device_property_count_u64(const struct device *dev, const char *propname)
279 {
280 return device_property_read_u64_array(dev, propname, NULL, 0);
281 }
282
device_property_string_array_count(const struct device * dev,const char * propname)283 static inline int device_property_string_array_count(const struct device *dev,
284 const char *propname)
285 {
286 return device_property_read_string_array(dev, propname, NULL, 0);
287 }
288
fwnode_property_read_u8(const struct fwnode_handle * fwnode,const char * propname,u8 * val)289 static inline int fwnode_property_read_u8(const struct fwnode_handle *fwnode,
290 const char *propname, u8 *val)
291 {
292 return fwnode_property_read_u8_array(fwnode, propname, val, 1);
293 }
294
fwnode_property_read_u16(const struct fwnode_handle * fwnode,const char * propname,u16 * val)295 static inline int fwnode_property_read_u16(const struct fwnode_handle *fwnode,
296 const char *propname, u16 *val)
297 {
298 return fwnode_property_read_u16_array(fwnode, propname, val, 1);
299 }
300
fwnode_property_read_u32(const struct fwnode_handle * fwnode,const char * propname,u32 * val)301 static inline int fwnode_property_read_u32(const struct fwnode_handle *fwnode,
302 const char *propname, u32 *val)
303 {
304 return fwnode_property_read_u32_array(fwnode, propname, val, 1);
305 }
306
fwnode_property_read_u64(const struct fwnode_handle * fwnode,const char * propname,u64 * val)307 static inline int fwnode_property_read_u64(const struct fwnode_handle *fwnode,
308 const char *propname, u64 *val)
309 {
310 return fwnode_property_read_u64_array(fwnode, propname, val, 1);
311 }
312
fwnode_property_count_u8(const struct fwnode_handle * fwnode,const char * propname)313 static inline int fwnode_property_count_u8(const struct fwnode_handle *fwnode,
314 const char *propname)
315 {
316 return fwnode_property_read_u8_array(fwnode, propname, NULL, 0);
317 }
318
fwnode_property_count_u16(const struct fwnode_handle * fwnode,const char * propname)319 static inline int fwnode_property_count_u16(const struct fwnode_handle *fwnode,
320 const char *propname)
321 {
322 return fwnode_property_read_u16_array(fwnode, propname, NULL, 0);
323 }
324
fwnode_property_count_u32(const struct fwnode_handle * fwnode,const char * propname)325 static inline int fwnode_property_count_u32(const struct fwnode_handle *fwnode,
326 const char *propname)
327 {
328 return fwnode_property_read_u32_array(fwnode, propname, NULL, 0);
329 }
330
fwnode_property_count_u64(const struct fwnode_handle * fwnode,const char * propname)331 static inline int fwnode_property_count_u64(const struct fwnode_handle *fwnode,
332 const char *propname)
333 {
334 return fwnode_property_read_u64_array(fwnode, propname, NULL, 0);
335 }
336
337 static inline int
fwnode_property_string_array_count(const struct fwnode_handle * fwnode,const char * propname)338 fwnode_property_string_array_count(const struct fwnode_handle *fwnode,
339 const char *propname)
340 {
341 return fwnode_property_read_string_array(fwnode, propname, NULL, 0);
342 }
343
344 struct software_node;
345
346 /**
347 * struct software_node_ref_args - Reference property with additional arguments
348 * @node: Reference to a software node
349 * @nargs: Number of elements in @args array
350 * @args: Integer arguments
351 */
352 struct software_node_ref_args {
353 const struct software_node *node;
354 unsigned int nargs;
355 u64 args[NR_FWNODE_REFERENCE_ARGS];
356 };
357
358 #define SOFTWARE_NODE_REFERENCE(_ref_, ...) \
359 (const struct software_node_ref_args) { \
360 .node = _ref_, \
361 .nargs = COUNT_ARGS(__VA_ARGS__), \
362 .args = { __VA_ARGS__ }, \
363 }
364
365 /**
366 * struct property_entry - "Built-in" device property representation.
367 * @name: Name of the property.
368 * @length: Length of data making up the value.
369 * @is_inline: True when the property value is stored inline.
370 * @type: Type of the data in unions.
371 * @pointer: Pointer to the property when it is not stored inline.
372 * @value: Value of the property when it is stored inline.
373 */
374 struct property_entry {
375 const char *name;
376 size_t length;
377 bool is_inline;
378 enum dev_prop_type type;
379 union {
380 const void *pointer;
381 union {
382 u8 u8_data[sizeof(u64) / sizeof(u8)];
383 u16 u16_data[sizeof(u64) / sizeof(u16)];
384 u32 u32_data[sizeof(u64) / sizeof(u32)];
385 u64 u64_data[sizeof(u64) / sizeof(u64)];
386 const char *str[sizeof(u64) / sizeof(char *)];
387 } value;
388 };
389 };
390
391 /*
392 * Note: the below initializers for the anonymous union are carefully
393 * crafted to avoid gcc-4.4.4's problems with initialization of anon unions
394 * and structs.
395 */
396 #define __PROPERTY_ENTRY_ARRAY_LEN(_name_, _elem_, _Type_, _val_, _len_) \
397 (struct property_entry) { \
398 .name = _name_, \
399 .length = (_len_) * sizeof_field(struct property_entry, value._elem_[0]), \
400 .type = DEV_PROP_##_Type_, \
401 { .pointer = _val_ }, \
402 }
403
404 #define PROPERTY_ENTRY_U8_ARRAY_LEN(_name_, _val_, _len_) \
405 __PROPERTY_ENTRY_ARRAY_LEN(_name_, u8_data, U8, _val_, _len_)
406 #define PROPERTY_ENTRY_U16_ARRAY_LEN(_name_, _val_, _len_) \
407 __PROPERTY_ENTRY_ARRAY_LEN(_name_, u16_data, U16, _val_, _len_)
408 #define PROPERTY_ENTRY_U32_ARRAY_LEN(_name_, _val_, _len_) \
409 __PROPERTY_ENTRY_ARRAY_LEN(_name_, u32_data, U32, _val_, _len_)
410 #define PROPERTY_ENTRY_U64_ARRAY_LEN(_name_, _val_, _len_) \
411 __PROPERTY_ENTRY_ARRAY_LEN(_name_, u64_data, U64, _val_, _len_)
412 #define PROPERTY_ENTRY_STRING_ARRAY_LEN(_name_, _val_, _len_) \
413 __PROPERTY_ENTRY_ARRAY_LEN(_name_, str, STRING, _val_, _len_)
414
415 #define PROPERTY_ENTRY_REF_ARRAY_LEN(_name_, _val_, _len_) \
416 (struct property_entry) { \
417 .name = _name_, \
418 .length = (_len_) * sizeof(struct software_node_ref_args), \
419 .type = DEV_PROP_REF, \
420 { .pointer = _val_ }, \
421 }
422
423 #define PROPERTY_ENTRY_U8_ARRAY(_name_, _val_) \
424 PROPERTY_ENTRY_U8_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
425 #define PROPERTY_ENTRY_U16_ARRAY(_name_, _val_) \
426 PROPERTY_ENTRY_U16_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
427 #define PROPERTY_ENTRY_U32_ARRAY(_name_, _val_) \
428 PROPERTY_ENTRY_U32_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
429 #define PROPERTY_ENTRY_U64_ARRAY(_name_, _val_) \
430 PROPERTY_ENTRY_U64_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
431 #define PROPERTY_ENTRY_STRING_ARRAY(_name_, _val_) \
432 PROPERTY_ENTRY_STRING_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
433 #define PROPERTY_ENTRY_REF_ARRAY(_name_, _val_) \
434 PROPERTY_ENTRY_REF_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
435
436 #define __PROPERTY_ENTRY_ELEMENT(_name_, _elem_, _Type_, _val_) \
437 (struct property_entry) { \
438 .name = _name_, \
439 .length = sizeof_field(struct property_entry, value._elem_[0]), \
440 .is_inline = true, \
441 .type = DEV_PROP_##_Type_, \
442 { .value = { ._elem_[0] = _val_ } }, \
443 }
444
445 #define PROPERTY_ENTRY_U8(_name_, _val_) \
446 __PROPERTY_ENTRY_ELEMENT(_name_, u8_data, U8, _val_)
447 #define PROPERTY_ENTRY_U16(_name_, _val_) \
448 __PROPERTY_ENTRY_ELEMENT(_name_, u16_data, U16, _val_)
449 #define PROPERTY_ENTRY_U32(_name_, _val_) \
450 __PROPERTY_ENTRY_ELEMENT(_name_, u32_data, U32, _val_)
451 #define PROPERTY_ENTRY_U64(_name_, _val_) \
452 __PROPERTY_ENTRY_ELEMENT(_name_, u64_data, U64, _val_)
453 #define PROPERTY_ENTRY_STRING(_name_, _val_) \
454 __PROPERTY_ENTRY_ELEMENT(_name_, str, STRING, _val_)
455
456 #define PROPERTY_ENTRY_REF(_name_, _ref_, ...) \
457 (struct property_entry) { \
458 .name = _name_, \
459 .length = sizeof(struct software_node_ref_args), \
460 .type = DEV_PROP_REF, \
461 { .pointer = &SOFTWARE_NODE_REFERENCE(_ref_, ##__VA_ARGS__), }, \
462 }
463
464 #define PROPERTY_ENTRY_BOOL(_name_) \
465 (struct property_entry) { \
466 .name = _name_, \
467 .is_inline = true, \
468 }
469
470 struct property_entry *
471 property_entries_dup(const struct property_entry *properties);
472 void property_entries_free(const struct property_entry *properties);
473
474 bool device_dma_supported(const struct device *dev);
475 enum dev_dma_attr device_get_dma_attr(const struct device *dev);
476
477 const void *device_get_match_data(const struct device *dev);
478
479 int device_get_phy_mode(struct device *dev);
480 int fwnode_get_phy_mode(const struct fwnode_handle *fwnode);
481
482 void __iomem *fwnode_iomap(struct fwnode_handle *fwnode, int index);
483
484 struct fwnode_handle *fwnode_graph_get_next_endpoint(
485 const struct fwnode_handle *fwnode, struct fwnode_handle *prev);
486 struct fwnode_handle *
487 fwnode_graph_get_port_parent(const struct fwnode_handle *fwnode);
488 struct fwnode_handle *fwnode_graph_get_remote_port_parent(
489 const struct fwnode_handle *fwnode);
490 struct fwnode_handle *fwnode_graph_get_remote_port(
491 const struct fwnode_handle *fwnode);
492 struct fwnode_handle *fwnode_graph_get_remote_endpoint(
493 const struct fwnode_handle *fwnode);
494
fwnode_graph_is_endpoint(const struct fwnode_handle * fwnode)495 static inline bool fwnode_graph_is_endpoint(const struct fwnode_handle *fwnode)
496 {
497 return fwnode_property_present(fwnode, "remote-endpoint");
498 }
499
500 /*
501 * Fwnode lookup flags
502 *
503 * @FWNODE_GRAPH_ENDPOINT_NEXT: In the case of no exact match, look for the
504 * closest endpoint ID greater than the specified
505 * one.
506 * @FWNODE_GRAPH_DEVICE_DISABLED: That the device to which the remote
507 * endpoint of the given endpoint belongs to,
508 * may be disabled, or that the endpoint is not
509 * connected.
510 */
511 #define FWNODE_GRAPH_ENDPOINT_NEXT BIT(0)
512 #define FWNODE_GRAPH_DEVICE_DISABLED BIT(1)
513
514 struct fwnode_handle *
515 fwnode_graph_get_endpoint_by_id(const struct fwnode_handle *fwnode,
516 u32 port, u32 endpoint, unsigned long flags);
517 unsigned int fwnode_graph_get_endpoint_count(const struct fwnode_handle *fwnode,
518 unsigned long flags);
519
520 #define fwnode_graph_for_each_endpoint(fwnode, child) \
521 for (child = fwnode_graph_get_next_endpoint(fwnode, NULL); child; \
522 child = fwnode_graph_get_next_endpoint(fwnode, child))
523
524 int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
525 struct fwnode_endpoint *endpoint);
526
527 typedef void *(*devcon_match_fn_t)(const struct fwnode_handle *fwnode, const char *id,
528 void *data);
529
530 void *fwnode_connection_find_match(const struct fwnode_handle *fwnode,
531 const char *con_id, void *data,
532 devcon_match_fn_t match);
533
device_connection_find_match(const struct device * dev,const char * con_id,void * data,devcon_match_fn_t match)534 static inline void *device_connection_find_match(const struct device *dev,
535 const char *con_id, void *data,
536 devcon_match_fn_t match)
537 {
538 return fwnode_connection_find_match(dev_fwnode(dev), con_id, data, match);
539 }
540
541 int fwnode_connection_find_matches(const struct fwnode_handle *fwnode,
542 const char *con_id, void *data,
543 devcon_match_fn_t match,
544 void **matches, unsigned int matches_len);
545
546 /* -------------------------------------------------------------------------- */
547 /* Software fwnode support - when HW description is incomplete or missing */
548
549 /**
550 * struct software_node - Software node description
551 * @name: Name of the software node
552 * @parent: Parent of the software node
553 * @properties: Array of device properties
554 */
555 struct software_node {
556 const char *name;
557 const struct software_node *parent;
558 const struct property_entry *properties;
559 };
560
561 #define SOFTWARE_NODE(_name_, _properties_, _parent_) \
562 (struct software_node) { \
563 .name = _name_, \
564 .properties = _properties_, \
565 .parent = _parent_, \
566 }
567
568 bool is_software_node(const struct fwnode_handle *fwnode);
569 const struct software_node *
570 to_software_node(const struct fwnode_handle *fwnode);
571 struct fwnode_handle *software_node_fwnode(const struct software_node *node);
572
573 const struct software_node *
574 software_node_find_by_name(const struct software_node *parent,
575 const char *name);
576
577 int software_node_register_node_group(const struct software_node **node_group);
578 void software_node_unregister_node_group(const struct software_node **node_group);
579
580 int software_node_register(const struct software_node *node);
581 void software_node_unregister(const struct software_node *node);
582
583 struct fwnode_handle *
584 fwnode_create_software_node(const struct property_entry *properties,
585 const struct fwnode_handle *parent);
586 void fwnode_remove_software_node(struct fwnode_handle *fwnode);
587
588 int device_add_software_node(struct device *dev, const struct software_node *node);
589 void device_remove_software_node(struct device *dev);
590
591 int device_create_managed_software_node(struct device *dev,
592 const struct property_entry *properties,
593 const struct software_node *parent);
594
595 #endif /* _LINUX_PROPERTY_H_ */
596