1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Function to read values from the device tree node attached to a udevice.
5 * Copyright (c) 2017 Google, Inc
6 * Written by Simon Glass <sjg@chromium.org>
12 #include <linux/errno.h>
14 #include <dm/device.h>
15 #include <dm/fdtaddr.h>
16 #include <dm/ofnode.h>
17 #include <dm/uclass.h>
21 #if CONFIG_IS_ENABLED(OF_LIVE)
22 static inline const struct device_node *dev_np(const struct udevice *dev)
24 return ofnode_to_np(dev_ofnode(dev));
27 static inline const struct device_node *dev_np(const struct udevice *dev)
33 #if !defined(CONFIG_DM_DEV_READ_INLINE) || CONFIG_IS_ENABLED(OF_PLATDATA)
35 * dev_read_u32() - read a 32-bit integer from a device's DT property
37 * @dev: device to read DT property from
38 * @propname: name of the property to read from
39 * @outp: place to put value (if found)
40 * @return 0 if OK, -ve on error
42 int dev_read_u32(const struct udevice *dev, const char *propname, u32 *outp);
45 * dev_read_u32_default() - read a 32-bit integer from a device's DT property
47 * @dev: device to read DT property from
48 * @propname: name of the property to read from
49 * @def: default value to return if the property has no value
50 * @return property value, or @def if not found
52 int dev_read_u32_default(const struct udevice *dev, const char *propname,
56 * dev_read_u32_index() - read an indexed 32-bit integer from a device's DT
59 * @dev: device to read DT property from
60 * @propname: name of the property to read from
61 * @index: index of the integer to return
62 * @outp: place to put value (if found)
63 * @return 0 if OK, -ve on error
65 int dev_read_u32_index(struct udevice *dev, const char *propname, int index,
69 * dev_read_u32_index_default() - read an indexed 32-bit integer from a device's
72 * @dev: device to read DT property from
73 * @propname: name of the property to read from
74 * @index: index of the integer to return
75 * @def: default value to return if the property has no value
76 * @return property value, or @def if not found
78 u32 dev_read_u32_index_default(struct udevice *dev, const char *propname,
82 * dev_read_s32() - read a signed 32-bit integer from a device's DT property
84 * @dev: device to read DT property from
85 * @propname: name of the property to read from
86 * @outp: place to put value (if found)
87 * @return 0 if OK, -ve on error
89 int dev_read_s32(const struct udevice *dev, const char *propname, s32 *outp);
92 * dev_read_s32_default() - read a signed 32-bit int from a device's DT property
94 * @dev: device to read DT property from
95 * @propname: name of the property to read from
96 * @def: default value to return if the property has no value
97 * @return property value, or @def if not found
99 int dev_read_s32_default(const struct udevice *dev, const char *propname,
103 * dev_read_u32u() - read a 32-bit integer from a device's DT property
105 * This version uses a standard uint type.
107 * @dev: device to read DT property from
108 * @propname: name of the property to read from
109 * @outp: place to put value (if found)
110 * @return 0 if OK, -ve on error
112 int dev_read_u32u(const struct udevice *dev, const char *propname, uint *outp);
115 * dev_read_u64() - read a 64-bit integer from a device's DT property
117 * @dev: device to read DT property from
118 * @propname: name of the property to read from
119 * @outp: place to put value (if found)
120 * @return 0 if OK, -ve on error
122 int dev_read_u64(const struct udevice *dev, const char *propname, u64 *outp);
125 * dev_read_u64_default() - read a 64-bit integer from a device's DT property
127 * @dev: device to read DT property from
128 * @propname: name of the property to read from
129 * @def: default value to return if the property has no value
130 * @return property value, or @def if not found
132 u64 dev_read_u64_default(const struct udevice *dev, const char *propname,
136 * dev_read_string() - Read a string from a device's DT property
138 * @dev: device to read DT property from
139 * @propname: name of the property to read
140 * @return string from property value, or NULL if there is no such property
142 const char *dev_read_string(const struct udevice *dev, const char *propname);
145 * dev_read_bool() - read a boolean value from a device's DT property
147 * @dev: device to read DT property from
148 * @propname: name of property to read
149 * @return true if property is present (meaning true), false if not present
151 bool dev_read_bool(const struct udevice *dev, const char *propname);
154 * dev_read_subnode() - find a named subnode of a device
156 * @dev: device whose DT node contains the subnode
157 * @subnode_name: name of subnode to find
158 * @return reference to subnode (which can be invalid if there is no such
161 ofnode dev_read_subnode(const struct udevice *dev, const char *subbnode_name);
164 * dev_read_size() - read the size of a property
166 * @dev: device to check
167 * @propname: property to check
168 * @return size of property if present, or -EINVAL if not
170 int dev_read_size(const struct udevice *dev, const char *propname);
173 * dev_read_addr_index() - Get the indexed reg property of a device
175 * @dev: Device to read from
176 * @index: the 'reg' property can hold a list of <addr, size> pairs
177 * and @index is used to select which one is required
179 * @return address or FDT_ADDR_T_NONE if not found
181 fdt_addr_t dev_read_addr_index(const struct udevice *dev, int index);
184 * dev_read_addr_index_ptr() - Get the indexed reg property of a device
187 * @dev: Device to read from
188 * @index: the 'reg' property can hold a list of <addr, size> pairs
189 * and @index is used to select which one is required
191 * @return pointer or NULL if not found
193 void *dev_read_addr_index_ptr(const struct udevice *dev, int index);
196 * dev_read_addr_size_index() - Get the indexed reg property of a device
198 * @dev: Device to read from
199 * @index: the 'reg' property can hold a list of <addr, size> pairs
200 * and @index is used to select which one is required
201 * @size: place to put size value (on success)
203 * @return address or FDT_ADDR_T_NONE if not found
205 fdt_addr_t dev_read_addr_size_index(const struct udevice *dev, int index,
209 * dev_remap_addr_index() - Get the indexed reg property of a device
210 * as a memory-mapped I/O pointer
212 * @dev: Device to read from
213 * @index: the 'reg' property can hold a list of <addr, size> pairs
214 * and @index is used to select which one is required
216 * @return pointer or NULL if not found
218 void *dev_remap_addr_index(const struct udevice *dev, int index);
221 * dev_read_addr_name() - Get the reg property of a device, indexed by name
223 * @dev: Device to read from
224 * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
225 * 'reg-names' property providing named-based identification. @index
226 * indicates the value to search for in 'reg-names'.
228 * @return address or FDT_ADDR_T_NONE if not found
230 fdt_addr_t dev_read_addr_name(const struct udevice *dev, const char *name);
233 * dev_read_addr_size_name() - Get the reg property of a device, indexed by name
235 * @dev: Device to read from
236 * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
237 * 'reg-names' property providing named-based identification. @index
238 * indicates the value to search for in 'reg-names'.
239 * @size: place to put size value (on success)
241 * @return address or FDT_ADDR_T_NONE if not found
243 fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, const char *name,
247 * dev_remap_addr_name() - Get the reg property of a device, indexed by name,
248 * as a memory-mapped I/O pointer
250 * @dev: Device to read from
251 * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
252 * 'reg-names' property providing named-based identification. @index
253 * indicates the value to search for in 'reg-names'.
255 * @return pointer or NULL if not found
257 void *dev_remap_addr_name(const struct udevice *dev, const char *name);
260 * dev_read_addr() - Get the reg property of a device
262 * @dev: Device to read from
264 * @return address or FDT_ADDR_T_NONE if not found
266 fdt_addr_t dev_read_addr(const struct udevice *dev);
269 * dev_read_addr_ptr() - Get the reg property of a device
272 * @dev: Device to read from
274 * @return pointer or NULL if not found
276 void *dev_read_addr_ptr(const struct udevice *dev);
279 * dev_read_addr_pci() - Read an address and handle PCI address translation
281 * At present U-Boot does not have address translation logic for PCI in the
282 * livetree implementation (of_addr.c). This special function supports this for
283 * the flat tree implementation.
285 * This function should be removed (and code should use dev_read() instead)
288 * 1. PCI address translation is added; and either
289 * 2. everything uses livetree where PCI translation is used (which is feasible
290 * in SPL and U-Boot proper) or PCI address translation is added to
291 * fdtdec_get_addr() and friends.
293 * @dev: Device to read from
294 * @return address or FDT_ADDR_T_NONE if not found
296 fdt_addr_t dev_read_addr_pci(const struct udevice *dev);
299 * dev_remap_addr() - Get the reg property of a device as a
300 * memory-mapped I/O pointer
302 * @dev: Device to read from
304 * @return pointer or NULL if not found
306 void *dev_remap_addr(const struct udevice *dev);
309 * dev_read_addr_size() - get address and size from a device property
311 * This does no address translation. It simply reads an property that contains
312 * an address and a size value, one after the other.
314 * @dev: Device to read from
315 * @propname: property to read
316 * @sizep: place to put size value (on success)
317 * @return address value, or FDT_ADDR_T_NONE on error
319 fdt_addr_t dev_read_addr_size(const struct udevice *dev, const char *propname,
323 * dev_read_name() - get the name of a device's node
325 * @dev: Device to read from
326 * @return name of node
328 const char *dev_read_name(const struct udevice *dev);
331 * dev_read_stringlist_search() - find string in a string list and return index
333 * Note that it is possible for this function to succeed on property values
334 * that are not NUL-terminated. That's because the function will stop after
335 * finding the first occurrence of @string. This can for example happen with
336 * small-valued cell properties, such as #address-cells, when searching for
339 * @dev: device to check
340 * @propname: name of the property containing the string list
341 * @string: string to look up in the string list
344 * the index of the string in the list of strings
345 * -ENODATA if the property is not found
346 * -EINVAL on some other error
348 int dev_read_stringlist_search(const struct udevice *dev, const char *property,
352 * dev_read_string_index() - obtain an indexed string from a string list
354 * @dev: device to examine
355 * @propname: name of the property containing the string list
356 * @index: index of the string to return
357 * @out: return location for the string
360 * length of string, if found or -ve error value if not found
362 int dev_read_string_index(const struct udevice *dev, const char *propname,
363 int index, const char **outp);
366 * dev_read_string_count() - find the number of strings in a string list
368 * @dev: device to examine
369 * @propname: name of the property containing the string list
371 * number of strings in the list, or -ve error value if not found
373 int dev_read_string_count(const struct udevice *dev, const char *propname);
375 * dev_read_phandle_with_args() - Find a node pointed by phandle in a list
377 * This function is useful to parse lists of phandles and their arguments.
378 * Returns 0 on success and fills out_args, on error returns appropriate
381 * Caller is responsible to call of_node_put() on the returned out_args->np
395 * list = <&phandle1 1 2 &phandle2 3>;
398 * To get a device_node of the `node2' node you may call this:
399 * dev_read_phandle_with_args(dev, "list", "#list-cells", 0, 1, &args);
401 * @dev: device whose node containing a list
402 * @list_name: property name that contains a list
403 * @cells_name: property name that specifies phandles' arguments count
404 * @cells_count: Cell count to use if @cells_name is NULL
405 * @index: index of a phandle to parse out
406 * @out_args: optional pointer to output arguments structure (will be filled)
407 * @return 0 on success (with @out_args filled out if not NULL), -ENOENT if
408 * @list_name does not exist, -EINVAL if a phandle was not found,
409 * @cells_name could not be found, the arguments were truncated or there
410 * were too many arguments.
412 int dev_read_phandle_with_args(const struct udevice *dev, const char *list_name,
413 const char *cells_name, int cell_count,
414 int index, struct ofnode_phandle_args *out_args);
417 * dev_count_phandle_with_args() - Return phandle number in a list
419 * This function is usefull to get phandle number contained in a property list.
420 * For example, this allows to allocate the right amount of memory to keep
421 * clock's reference contained into the "clocks" property.
424 * @dev: device whose node containing a list
425 * @list_name: property name that contains a list
426 * @cells_name: property name that specifies phandles' arguments count
427 * @cells_count: Cell count to use if @cells_name is NULL
428 * @Returns number of phandle found on success, on error returns appropriate
432 int dev_count_phandle_with_args(const struct udevice *dev,
433 const char *list_name, const char *cells_name,
437 * dev_read_addr_cells() - Get the number of address cells for a device's node
439 * This walks back up the tree to find the closest #address-cells property
440 * which controls the given node.
442 * @dev: device to check
443 * @return number of address cells this node uses
445 int dev_read_addr_cells(const struct udevice *dev);
448 * dev_read_size_cells() - Get the number of size cells for a device's node
450 * This walks back up the tree to find the closest #size-cells property
451 * which controls the given node.
453 * @dev: device to check
454 * @return number of size cells this node uses
456 int dev_read_size_cells(const struct udevice *dev);
459 * dev_read_addr_cells() - Get the address cells property in a node
461 * This function matches fdt_address_cells().
463 * @dev: device to check
464 * @return number of address cells this node uses
466 int dev_read_simple_addr_cells(const struct udevice *dev);
469 * dev_read_size_cells() - Get the size cells property in a node
471 * This function matches fdt_size_cells().
473 * @dev: device to check
474 * @return number of size cells this node uses
476 int dev_read_simple_size_cells(const struct udevice *dev);
479 * dev_read_phandle() - Get the phandle from a device
481 * @dev: device to check
482 * @return phandle (1 or greater), or 0 if no phandle or other error
484 int dev_read_phandle(const struct udevice *dev);
487 * dev_read_prop()- - read a property from a device's node
489 * @dev: device to check
490 * @propname: property to read
491 * @lenp: place to put length on success
492 * @return pointer to property, or NULL if not found
494 const void *dev_read_prop(const struct udevice *dev, const char *propname,
498 * dev_read_first_prop()- get the reference of the first property
500 * Get reference to the first property of the node, it is used to iterate
501 * and read all the property with dev_read_prop_by_prop().
503 * @dev: device to check
504 * @prop: place to put argument reference
505 * @return 0 if OK, -ve on error. -FDT_ERR_NOTFOUND if not found
507 int dev_read_first_prop(const struct udevice *dev, struct ofprop *prop);
510 * ofnode_get_next_property() - get the reference of the next property
512 * Get reference to the next property of the node, it is used to iterate
513 * and read all the property with dev_read_prop_by_prop().
515 * @prop: reference of current argument and place to put reference of next one
516 * @return 0 if OK, -ve on error. -FDT_ERR_NOTFOUND if not found
518 int dev_read_next_prop(struct ofprop *prop);
521 * dev_read_prop_by_prop() - get a pointer to the value of a property
523 * Get value for the property identified by the provided reference.
525 * @prop: reference on property
526 * @propname: If non-NULL, place to property name on success,
527 * @lenp: If non-NULL, place to put length on success
528 * @return 0 if OK, -ve on error. -FDT_ERR_NOTFOUND if not found
530 const void *dev_read_prop_by_prop(struct ofprop *prop,
531 const char **propname, int *lenp);
534 * dev_read_alias_seq() - Get the alias sequence number of a node
536 * This works out whether a node is pointed to by an alias, and if so, the
537 * sequence number of that alias. Aliases are of the form <base><num> where
538 * <num> is the sequence number. For example spi2 would be sequence number 2.
540 * @dev: device to look up
541 * @devnump: set to the sequence number if one is found
542 * @return 0 if a sequence was found, -ve if not
544 int dev_read_alias_seq(const struct udevice *dev, int *devnump);
547 * dev_read_u32_array() - Find and read an array of 32 bit integers
549 * Search for a property in a device node and read 32-bit value(s) from
552 * The out_values is modified only if a valid u32 value can be decoded.
554 * @dev: device to look up
555 * @propname: name of the property to read
556 * @out_values: pointer to return value, modified only if return value is 0
557 * @sz: number of array elements to read
558 * @return 0 on success, -EINVAL if the property does not exist, -ENODATA if
559 * property does not have a value, and -EOVERFLOW if the property data isn't
562 int dev_read_u32_array(const struct udevice *dev, const char *propname,
563 u32 *out_values, size_t sz);
566 * dev_read_first_subnode() - find the first subnode of a device's node
568 * @dev: device to look up
569 * @return reference to the first subnode (which can be invalid if the device's
570 * node has no subnodes)
572 ofnode dev_read_first_subnode(const struct udevice *dev);
575 * ofnode_next_subnode() - find the next sibling of a subnode
577 * @node: valid reference to previous node (sibling)
578 * @return reference to the next subnode (which can be invalid if the node
579 * has no more siblings)
581 ofnode dev_read_next_subnode(ofnode node);
584 * dev_read_u8_array_ptr() - find an 8-bit array
586 * Look up a device's node property and return a pointer to its contents as a
587 * byte array of given length. The property must have at least enough data
588 * for the array (count bytes). It may have more, but this will be ignored.
589 * The data is not copied.
591 * @dev: device to look up
592 * @propname: name of property to find
593 * @sz: number of array elements
594 * @return pointer to byte array if found, or NULL if the property is not
595 * found or there is not enough data
597 const uint8_t *dev_read_u8_array_ptr(const struct udevice *dev,
598 const char *propname, size_t sz);
601 * dev_read_enabled() - check whether a node is enabled
603 * This looks for a 'status' property. If this exists, then returns 1 if
604 * the status is 'ok' and 0 otherwise. If there is no status property,
605 * it returns 1 on the assumption that anything mentioned should be enabled
608 * @dev: device to examine
609 * @return integer value 0 (not enabled) or 1 (enabled)
611 int dev_read_enabled(const struct udevice *dev);
614 * dev_read_resource() - obtain an indexed resource from a device.
616 * @dev: device to examine
617 * @index index of the resource to retrieve (0 = first)
618 * @res returns the resource
619 * @return 0 if ok, negative on error
621 int dev_read_resource(const struct udevice *dev, uint index,
622 struct resource *res);
625 * dev_read_resource_byname() - obtain a named resource from a device.
627 * @dev: device to examine
628 * @name: name of the resource to retrieve
629 * @res: returns the resource
630 * @return 0 if ok, negative on error
632 int dev_read_resource_byname(const struct udevice *dev, const char *name,
633 struct resource *res);
636 * dev_translate_address() - Translate a device-tree address
638 * Translate an address from the device-tree into a CPU physical address. This
639 * function walks up the tree and applies the various bus mappings along the
642 * @dev: device giving the context in which to translate the address
643 * @in_addr: pointer to the address to translate
644 * @return the translated address; OF_BAD_ADDR on error
646 u64 dev_translate_address(const struct udevice *dev, const fdt32_t *in_addr);
649 * dev_translate_dma_address() - Translate a device-tree DMA address
651 * Translate a DMA address from the device-tree into a CPU physical address.
652 * This function walks up the tree and applies the various bus mappings along
655 * @dev: device giving the context in which to translate the DMA address
656 * @in_addr: pointer to the DMA address to translate
657 * @return the translated DMA address; OF_BAD_ADDR on error
659 u64 dev_translate_dma_address(const struct udevice *dev,
660 const fdt32_t *in_addr);
663 * dev_get_dma_range() - Get a device's DMA constraints
665 * Provide the address bases and size of the linear mapping between the CPU and
666 * a device's BUS address space.
668 * @dev: device giving the context in which to translate the DMA address
669 * @cpu: base address for CPU's view of memory
670 * @bus: base address for BUS's view of memory
671 * @size: size of the address space
672 * @return 0 if ok, negative on error
674 int dev_get_dma_range(const struct udevice *dev, phys_addr_t *cpu,
675 dma_addr_t *bus, u64 *size);
678 * dev_read_alias_highest_id - Get highest alias id for the given stem
679 * @stem: Alias stem to be examined
681 * The function travels the lookup table to get the highest alias id for the
683 * @return alias ID, if found, else -1
685 int dev_read_alias_highest_id(const char *stem);
688 * dev_get_child_count() - get the child count of a device
690 * @dev: device to use for interation (struct udevice *)
691 * @return the count of child subnode
693 int dev_get_child_count(const struct udevice *dev);
696 * dev_read_pci_bus_range - Read PCI bus-range resource
698 * Look at the bus range property of a device node and return the pci bus
699 * range for this node.
701 * @dev: device to examine
702 * @res returns the resource
703 * @return 0 if ok, negative on error
705 int dev_read_pci_bus_range(const struct udevice *dev, struct resource *res);
708 * dev_decode_display_timing() - decode display timings
710 * Decode display timings from the supplied 'display-timings' node.
711 * See doc/device-tree-bindings/video/display-timing.txt for binding
714 * @dev: device to read DT display timings from. The node linked to the device
715 * contains a child node called 'display-timings' which in turn contains
716 * one or more display timing nodes.
717 * @index: index number to read (0=first timing subnode)
718 * @config: place to put timings
719 * @return 0 if OK, -FDT_ERR_NOTFOUND if not found
721 int dev_decode_display_timing(const struct udevice *dev, int index,
722 struct display_timing *config);
724 #else /* CONFIG_DM_DEV_READ_INLINE is enabled */
725 #include <asm/global_data.h>
727 static inline int dev_read_u32(const struct udevice *dev,
728 const char *propname, u32 *outp)
730 return ofnode_read_u32(dev_ofnode(dev), propname, outp);
733 static inline int dev_read_u32_default(const struct udevice *dev,
734 const char *propname, int def)
736 return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
739 static inline int dev_read_u32_index(struct udevice *dev,
740 const char *propname, int index, u32 *outp)
742 return ofnode_read_u32_index(dev_ofnode(dev), propname, index, outp);
745 static inline u32 dev_read_u32_index_default(struct udevice *dev,
746 const char *propname, int index,
749 return ofnode_read_u32_index_default(dev_ofnode(dev), propname, index,
753 static inline int dev_read_s32(const struct udevice *dev,
754 const char *propname, s32 *outp)
756 return ofnode_read_s32(dev_ofnode(dev), propname, outp);
759 static inline int dev_read_s32_default(const struct udevice *dev,
760 const char *propname, int def)
762 return ofnode_read_s32_default(dev_ofnode(dev), propname, def);
765 static inline int dev_read_u32u(const struct udevice *dev,
766 const char *propname, uint *outp)
771 ret = ofnode_read_u32(dev_ofnode(dev), propname, &val);
779 static inline int dev_read_u64(const struct udevice *dev,
780 const char *propname, u64 *outp)
782 return ofnode_read_u64(dev_ofnode(dev), propname, outp);
785 static inline u64 dev_read_u64_default(const struct udevice *dev,
786 const char *propname, u64 def)
788 return ofnode_read_u64_default(dev_ofnode(dev), propname, def);
791 static inline const char *dev_read_string(const struct udevice *dev,
792 const char *propname)
794 return ofnode_read_string(dev_ofnode(dev), propname);
797 static inline bool dev_read_bool(const struct udevice *dev,
798 const char *propname)
800 return ofnode_read_bool(dev_ofnode(dev), propname);
803 static inline ofnode dev_read_subnode(const struct udevice *dev,
804 const char *subbnode_name)
806 return ofnode_find_subnode(dev_ofnode(dev), subbnode_name);
809 static inline int dev_read_size(const struct udevice *dev, const char *propname)
811 return ofnode_read_size(dev_ofnode(dev), propname);
814 static inline fdt_addr_t dev_read_addr_index(const struct udevice *dev,
817 return devfdt_get_addr_index(dev, index);
820 static inline void *dev_read_addr_index_ptr(const struct udevice *dev,
823 return devfdt_get_addr_index_ptr(dev, index);
826 static inline fdt_addr_t dev_read_addr_size_index(const struct udevice *dev,
830 return devfdt_get_addr_size_index(dev, index, size);
833 static inline fdt_addr_t dev_read_addr_name(const struct udevice *dev,
836 return devfdt_get_addr_name(dev, name);
839 static inline fdt_addr_t dev_read_addr_size_name(const struct udevice *dev,
843 return devfdt_get_addr_size_name(dev, name, size);
846 static inline fdt_addr_t dev_read_addr(const struct udevice *dev)
848 return devfdt_get_addr(dev);
851 static inline void *dev_read_addr_ptr(const struct udevice *dev)
853 return devfdt_get_addr_ptr(dev);
856 static inline fdt_addr_t dev_read_addr_pci(const struct udevice *dev)
858 return devfdt_get_addr_pci(dev);
861 static inline void *dev_remap_addr(const struct udevice *dev)
863 return devfdt_remap_addr(dev);
866 static inline void *dev_remap_addr_index(const struct udevice *dev, int index)
868 return devfdt_remap_addr_index(dev, index);
871 static inline void *dev_remap_addr_name(const struct udevice *dev,
874 return devfdt_remap_addr_name(dev, name);
877 static inline fdt_addr_t dev_read_addr_size(const struct udevice *dev,
878 const char *propname,
881 return ofnode_get_addr_size(dev_ofnode(dev), propname, sizep);
884 static inline const char *dev_read_name(const struct udevice *dev)
886 return ofnode_get_name(dev_ofnode(dev));
889 static inline int dev_read_stringlist_search(const struct udevice *dev,
890 const char *propname,
893 return ofnode_stringlist_search(dev_ofnode(dev), propname, string);
896 static inline int dev_read_string_index(const struct udevice *dev,
897 const char *propname, int index,
900 return ofnode_read_string_index(dev_ofnode(dev), propname, index, outp);
903 static inline int dev_read_string_count(const struct udevice *dev,
904 const char *propname)
906 return ofnode_read_string_count(dev_ofnode(dev), propname);
909 static inline int dev_read_phandle_with_args(const struct udevice *dev,
910 const char *list_name, const char *cells_name, int cell_count,
911 int index, struct ofnode_phandle_args *out_args)
913 return ofnode_parse_phandle_with_args(dev_ofnode(dev), list_name,
914 cells_name, cell_count, index,
918 static inline int dev_count_phandle_with_args(const struct udevice *dev,
919 const char *list_name, const char *cells_name, int cell_count)
921 return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name,
922 cells_name, cell_count);
925 static inline int dev_read_addr_cells(const struct udevice *dev)
927 int parent = fdt_parent_offset(gd->fdt_blob, dev_of_offset(dev));
929 return fdt_address_cells(gd->fdt_blob, parent);
932 static inline int dev_read_size_cells(const struct udevice *dev)
934 int parent = fdt_parent_offset(gd->fdt_blob, dev_of_offset(dev));
936 return fdt_size_cells(gd->fdt_blob, parent);
939 static inline int dev_read_simple_addr_cells(const struct udevice *dev)
941 return fdt_address_cells(gd->fdt_blob, dev_of_offset(dev));
944 static inline int dev_read_simple_size_cells(const struct udevice *dev)
946 return fdt_size_cells(gd->fdt_blob, dev_of_offset(dev));
949 static inline int dev_read_phandle(const struct udevice *dev)
951 return fdt_get_phandle(gd->fdt_blob, dev_of_offset(dev));
954 static inline const void *dev_read_prop(const struct udevice *dev,
955 const char *propname, int *lenp)
957 return ofnode_get_property(dev_ofnode(dev), propname, lenp);
960 static inline int dev_read_first_prop(const struct udevice *dev, struct ofprop *prop)
962 return ofnode_get_first_property(dev_ofnode(dev), prop);
965 static inline int dev_read_next_prop(struct ofprop *prop)
967 return ofnode_get_next_property(prop);
970 static inline const void *dev_read_prop_by_prop(struct ofprop *prop,
971 const char **propname,
974 return ofnode_get_property_by_prop(prop, propname, lenp);
977 static inline int dev_read_alias_seq(const struct udevice *dev, int *devnump)
979 #if CONFIG_IS_ENABLED(OF_CONTROL)
980 return fdtdec_get_alias_seq(gd->fdt_blob, dev->uclass->uc_drv->name,
981 dev_of_offset(dev), devnump);
987 static inline int dev_read_u32_array(const struct udevice *dev,
988 const char *propname, u32 *out_values,
991 return ofnode_read_u32_array(dev_ofnode(dev), propname, out_values, sz);
994 static inline ofnode dev_read_first_subnode(const struct udevice *dev)
996 return ofnode_first_subnode(dev_ofnode(dev));
999 static inline ofnode dev_read_next_subnode(ofnode node)
1001 return ofnode_next_subnode(node);
1004 static inline const uint8_t *dev_read_u8_array_ptr(const struct udevice *dev,
1005 const char *propname,
1008 return ofnode_read_u8_array_ptr(dev_ofnode(dev), propname, sz);
1011 static inline int dev_read_enabled(const struct udevice *dev)
1013 return fdtdec_get_is_enabled(gd->fdt_blob, dev_of_offset(dev));
1016 static inline int dev_read_resource(const struct udevice *dev, uint index,
1017 struct resource *res)
1019 return ofnode_read_resource(dev_ofnode(dev), index, res);
1022 static inline int dev_read_resource_byname(const struct udevice *dev,
1024 struct resource *res)
1026 return ofnode_read_resource_byname(dev_ofnode(dev), name, res);
1029 static inline u64 dev_translate_address(const struct udevice *dev,
1030 const fdt32_t *in_addr)
1032 return ofnode_translate_address(dev_ofnode(dev), in_addr);
1035 static inline u64 dev_translate_dma_address(const struct udevice *dev,
1036 const fdt32_t *in_addr)
1038 return ofnode_translate_dma_address(dev_ofnode(dev), in_addr);
1041 static inline int dev_get_dma_range(const struct udevice *dev, phys_addr_t *cpu,
1042 dma_addr_t *bus, u64 *size)
1044 return ofnode_get_dma_range(dev_ofnode(dev), cpu, bus, size);
1047 static inline int dev_read_alias_highest_id(const char *stem)
1049 if (!CONFIG_IS_ENABLED(OF_LIBFDT) || !gd->fdt_blob)
1051 return fdtdec_get_alias_highest_id(gd->fdt_blob, stem);
1054 static inline int dev_get_child_count(const struct udevice *dev)
1056 return ofnode_get_child_count(dev_ofnode(dev));
1059 static inline int dev_decode_display_timing(const struct udevice *dev,
1061 struct display_timing *config)
1063 return ofnode_decode_display_timing(dev_ofnode(dev), index, config);
1066 #endif /* CONFIG_DM_DEV_READ_INLINE */
1069 * dev_for_each_subnode() - Helper function to iterate through subnodes
1071 * This creates a for() loop which works through the subnodes in a device's
1074 * @subnode: ofnode holding the current subnode
1075 * @dev: device to use for interation (struct udevice *)
1077 #define dev_for_each_subnode(subnode, dev) \
1078 for (subnode = dev_read_first_subnode(dev); \
1079 ofnode_valid(subnode); \
1080 subnode = ofnode_next_subnode(subnode))
1083 * dev_for_each_property() - Helper function to iterate through property
1085 * This creates a for() loop which works through the property in a device's
1088 * @prop: struct ofprop holding the current property
1089 * @dev: device to use for interation (struct udevice *)
1091 #define dev_for_each_property(prop, dev) \
1092 for (int ret_prop = dev_read_first_prop(dev, &prop); \
1094 ret_prop = dev_read_next_prop(&prop))