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