1/* SPDX-License-Identifier: GPL-2.0+ */ 2/* 3 * Function to read values from the device tree node attached to a udevice. 4 * 5 * Copyright (c) 2017 Google, Inc 6 * Written by Simon Glass <sjg@chromium.org> 7 */ 8 9#ifndef _DM_READ_H 10#define _DM_READ_H 11 12#include <linux/errno.h> 13 14#include <dm/device.h> 15#include <dm/fdtaddr.h> 16#include <dm/ofnode.h> 17#include <dm/uclass.h> 18 19struct resource; 20 21#if CONFIG_IS_ENABLED(OF_LIVE) 22static inline const struct device_node *dev_np(const struct udevice *dev) 23{ 24 return ofnode_to_np(dev_ofnode(dev)); 25} 26#else 27static inline const struct device_node *dev_np(const struct udevice *dev) 28{ 29 return NULL; 30} 31#endif 32 33#if !defined(CONFIG_DM_DEV_READ_INLINE) || CONFIG_IS_ENABLED(OF_PLATDATA) 34/** 35 * dev_read_u32() - read a 32-bit integer from a device's DT property 36 * 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 41 */ 42int dev_read_u32(const struct udevice *dev, const char *propname, u32 *outp); 43 44/** 45 * dev_read_u32_default() - read a 32-bit integer from a device's DT property 46 * 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 51 */ 52int dev_read_u32_default(const struct udevice *dev, const char *propname, 53 int def); 54 55/** 56 * dev_read_u32_index() - read an indexed 32-bit integer from a device's DT 57 * property 58 * 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 64 */ 65int dev_read_u32_index(struct udevice *dev, const char *propname, int index, 66 u32 *outp); 67 68/** 69 * dev_read_u32_index_default() - read an indexed 32-bit integer from a device's 70 * DT property 71 * 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 77 */ 78u32 dev_read_u32_index_default(struct udevice *dev, const char *propname, 79 int index, u32 def); 80 81/** 82 * dev_read_s32() - read a signed 32-bit integer from a device's DT property 83 * 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 88 */ 89int dev_read_s32(const struct udevice *dev, const char *propname, s32 *outp); 90 91/** 92 * dev_read_s32_default() - read a signed 32-bit int from a device's DT property 93 * 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 98 */ 99int dev_read_s32_default(const struct udevice *dev, const char *propname, 100 int def); 101 102/** 103 * dev_read_u32u() - read a 32-bit integer from a device's DT property 104 * 105 * This version uses a standard uint type. 106 * 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 111 */ 112int dev_read_u32u(const struct udevice *dev, const char *propname, uint *outp); 113 114/** 115 * dev_read_u64() - read a 64-bit integer from a device's DT property 116 * 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 121 */ 122int dev_read_u64(const struct udevice *dev, const char *propname, u64 *outp); 123 124/** 125 * dev_read_u64_default() - read a 64-bit integer from a device's DT property 126 * 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 131 */ 132u64 dev_read_u64_default(const struct udevice *dev, const char *propname, 133 u64 def); 134 135/** 136 * dev_read_string() - Read a string from a device's DT property 137 * 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 141 */ 142const char *dev_read_string(const struct udevice *dev, const char *propname); 143 144/** 145 * dev_read_bool() - read a boolean value from a device's DT property 146 * 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 150 */ 151bool dev_read_bool(const struct udevice *dev, const char *propname); 152 153/** 154 * dev_read_subnode() - find a named subnode of a device 155 * 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 159 * subnode) 160 */ 161ofnode dev_read_subnode(const struct udevice *dev, const char *subbnode_name); 162 163/** 164 * dev_read_size() - read the size of a property 165 * 166 * @dev: device to check 167 * @propname: property to check 168 * @return size of property if present, or -EINVAL if not 169 */ 170int dev_read_size(const struct udevice *dev, const char *propname); 171 172/** 173 * dev_read_addr_index() - Get the indexed reg property of a device 174 * 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 178 * 179 * @return address or FDT_ADDR_T_NONE if not found 180 */ 181fdt_addr_t dev_read_addr_index(const struct udevice *dev, int index); 182 183/** 184 * dev_read_addr_size_index() - Get the indexed reg property of a device 185 * 186 * @dev: Device to read from 187 * @index: the 'reg' property can hold a list of <addr, size> pairs 188 * and @index is used to select which one is required 189 * @size: place to put size value (on success) 190 * 191 * @return address or FDT_ADDR_T_NONE if not found 192 */ 193fdt_addr_t dev_read_addr_size_index(const struct udevice *dev, int index, 194 fdt_size_t *size); 195 196/** 197 * dev_remap_addr_index() - Get the indexed reg property of a device 198 * as a memory-mapped I/O pointer 199 * 200 * @dev: Device to read from 201 * @index: the 'reg' property can hold a list of <addr, size> pairs 202 * and @index is used to select which one is required 203 * 204 * @return pointer or NULL if not found 205 */ 206void *dev_remap_addr_index(const struct udevice *dev, int index); 207 208/** 209 * dev_read_addr_name() - Get the reg property of a device, indexed by name 210 * 211 * @dev: Device to read from 212 * @name: the 'reg' property can hold a list of <addr, size> pairs, with the 213 * 'reg-names' property providing named-based identification. @index 214 * indicates the value to search for in 'reg-names'. 215 * 216 * @return address or FDT_ADDR_T_NONE if not found 217 */ 218fdt_addr_t dev_read_addr_name(const struct udevice *dev, const char *name); 219 220/** 221 * dev_read_addr_size_name() - Get the reg property of a device, indexed by name 222 * 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'. 227 * @size: place to put size value (on success) 228 * 229 * @return address or FDT_ADDR_T_NONE if not found 230 */ 231fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, const char *name, 232 fdt_size_t *size); 233 234/** 235 * dev_remap_addr_name() - Get the reg property of a device, indexed by name, 236 * as a memory-mapped I/O pointer 237 * 238 * @dev: Device to read from 239 * @name: the 'reg' property can hold a list of <addr, size> pairs, with the 240 * 'reg-names' property providing named-based identification. @index 241 * indicates the value to search for in 'reg-names'. 242 * 243 * @return pointer or NULL if not found 244 */ 245void *dev_remap_addr_name(const struct udevice *dev, const char *name); 246 247/** 248 * dev_read_addr() - Get the reg property of a device 249 * 250 * @dev: Device to read from 251 * 252 * @return address or FDT_ADDR_T_NONE if not found 253 */ 254fdt_addr_t dev_read_addr(const struct udevice *dev); 255 256/** 257 * dev_read_addr_ptr() - Get the reg property of a device 258 * as a pointer 259 * 260 * @dev: Device to read from 261 * 262 * @return pointer or NULL if not found 263 */ 264void *dev_read_addr_ptr(const struct udevice *dev); 265 266/** 267 * dev_read_addr_pci() - Read an address and handle PCI address translation 268 * 269 * At present U-Boot does not have address translation logic for PCI in the 270 * livetree implementation (of_addr.c). This special function supports this for 271 * the flat tree implementation. 272 * 273 * This function should be removed (and code should use dev_read() instead) 274 * once: 275 * 276 * 1. PCI address translation is added; and either 277 * 2. everything uses livetree where PCI translation is used (which is feasible 278 * in SPL and U-Boot proper) or PCI address translation is added to 279 * fdtdec_get_addr() and friends. 280 * 281 * @dev: Device to read from 282 * @return address or FDT_ADDR_T_NONE if not found 283 */ 284fdt_addr_t dev_read_addr_pci(const struct udevice *dev); 285 286/** 287 * dev_remap_addr() - Get the reg property of a device as a 288 * memory-mapped I/O pointer 289 * 290 * @dev: Device to read from 291 * 292 * @return pointer or NULL if not found 293 */ 294void *dev_remap_addr(const struct udevice *dev); 295 296/** 297 * dev_read_addr_size() - get address and size from a device property 298 * 299 * This does no address translation. It simply reads an property that contains 300 * an address and a size value, one after the other. 301 * 302 * @dev: Device to read from 303 * @propname: property to read 304 * @sizep: place to put size value (on success) 305 * @return address value, or FDT_ADDR_T_NONE on error 306 */ 307fdt_addr_t dev_read_addr_size(const struct udevice *dev, const char *propname, 308 fdt_size_t *sizep); 309 310/** 311 * dev_read_name() - get the name of a device's node 312 * 313 * @dev: Device to read from 314 * @return name of node 315 */ 316const char *dev_read_name(const struct udevice *dev); 317 318/** 319 * dev_read_stringlist_search() - find string in a string list and return index 320 * 321 * Note that it is possible for this function to succeed on property values 322 * that are not NUL-terminated. That's because the function will stop after 323 * finding the first occurrence of @string. This can for example happen with 324 * small-valued cell properties, such as #address-cells, when searching for 325 * the empty string. 326 * 327 * @dev: device to check 328 * @propname: name of the property containing the string list 329 * @string: string to look up in the string list 330 * 331 * @return: 332 * the index of the string in the list of strings 333 * -ENODATA if the property is not found 334 * -EINVAL on some other error 335 */ 336int dev_read_stringlist_search(const struct udevice *dev, const char *property, 337 const char *string); 338 339/** 340 * dev_read_string_index() - obtain an indexed string from a string list 341 * 342 * @dev: device to examine 343 * @propname: name of the property containing the string list 344 * @index: index of the string to return 345 * @out: return location for the string 346 * 347 * @return: 348 * length of string, if found or -ve error value if not found 349 */ 350int dev_read_string_index(const struct udevice *dev, const char *propname, 351 int index, const char **outp); 352 353/** 354 * dev_read_string_count() - find the number of strings in a string list 355 * 356 * @dev: device to examine 357 * @propname: name of the property containing the string list 358 * @return: 359 * number of strings in the list, or -ve error value if not found 360 */ 361int dev_read_string_count(const struct udevice *dev, const char *propname); 362/** 363 * dev_read_phandle_with_args() - Find a node pointed by phandle in a list 364 * 365 * This function is useful to parse lists of phandles and their arguments. 366 * Returns 0 on success and fills out_args, on error returns appropriate 367 * errno value. 368 * 369 * Caller is responsible to call of_node_put() on the returned out_args->np 370 * pointer. 371 * 372 * Example: 373 * 374 * phandle1: node1 { 375 * #list-cells = <2>; 376 * } 377 * 378 * phandle2: node2 { 379 * #list-cells = <1>; 380 * } 381 * 382 * node3 { 383 * list = <&phandle1 1 2 &phandle2 3>; 384 * } 385 * 386 * To get a device_node of the `node2' node you may call this: 387 * dev_read_phandle_with_args(dev, "list", "#list-cells", 0, 1, &args); 388 * 389 * @dev: device whose node containing a list 390 * @list_name: property name that contains a list 391 * @cells_name: property name that specifies phandles' arguments count 392 * @cells_count: Cell count to use if @cells_name is NULL 393 * @index: index of a phandle to parse out 394 * @out_args: optional pointer to output arguments structure (will be filled) 395 * @return 0 on success (with @out_args filled out if not NULL), -ENOENT if 396 * @list_name does not exist, -EINVAL if a phandle was not found, 397 * @cells_name could not be found, the arguments were truncated or there 398 * were too many arguments. 399 */ 400int dev_read_phandle_with_args(const struct udevice *dev, const char *list_name, 401 const char *cells_name, int cell_count, 402 int index, struct ofnode_phandle_args *out_args); 403 404/** 405 * dev_count_phandle_with_args() - Return phandle number in a list 406 * 407 * This function is usefull to get phandle number contained in a property list. 408 * For example, this allows to allocate the right amount of memory to keep 409 * clock's reference contained into the "clocks" property. 410 * 411 * 412 * @dev: device whose node containing a list 413 * @list_name: property name that contains a list 414 * @cells_name: property name that specifies phandles' arguments count 415 * @cells_count: Cell count to use if @cells_name is NULL 416 * @Returns number of phandle found on success, on error returns appropriate 417 * errno value. 418 */ 419 420int dev_count_phandle_with_args(const struct udevice *dev, 421 const char *list_name, const char *cells_name, 422 int cell_count); 423 424/** 425 * dev_read_addr_cells() - Get the number of address cells for a device's node 426 * 427 * This walks back up the tree to find the closest #address-cells property 428 * which controls the given node. 429 * 430 * @dev: device to check 431 * @return number of address cells this node uses 432 */ 433int dev_read_addr_cells(const struct udevice *dev); 434 435/** 436 * dev_read_size_cells() - Get the number of size cells for a device's node 437 * 438 * This walks back up the tree to find the closest #size-cells property 439 * which controls the given node. 440 * 441 * @dev: device to check 442 * @return number of size cells this node uses 443 */ 444int dev_read_size_cells(const struct udevice *dev); 445 446/** 447 * dev_read_addr_cells() - Get the address cells property in a node 448 * 449 * This function matches fdt_address_cells(). 450 * 451 * @dev: device to check 452 * @return number of address cells this node uses 453 */ 454int dev_read_simple_addr_cells(const struct udevice *dev); 455 456/** 457 * dev_read_size_cells() - Get the size cells property in a node 458 * 459 * This function matches fdt_size_cells(). 460 * 461 * @dev: device to check 462 * @return number of size cells this node uses 463 */ 464int dev_read_simple_size_cells(const struct udevice *dev); 465 466/** 467 * dev_read_phandle() - Get the phandle from a device 468 * 469 * @dev: device to check 470 * @return phandle (1 or greater), or 0 if no phandle or other error 471 */ 472int dev_read_phandle(const struct udevice *dev); 473 474/** 475 * dev_read_prop()- - read a property from a device's node 476 * 477 * @dev: device to check 478 * @propname: property to read 479 * @lenp: place to put length on success 480 * @return pointer to property, or NULL if not found 481 */ 482const void *dev_read_prop(const struct udevice *dev, const char *propname, 483 int *lenp); 484 485/** 486 * dev_read_first_prop()- get the reference of the first property 487 * 488 * Get reference to the first property of the node, it is used to iterate 489 * and read all the property with dev_read_prop_by_prop(). 490 * 491 * @dev: device to check 492 * @prop: place to put argument reference 493 * @return 0 if OK, -ve on error. -FDT_ERR_NOTFOUND if not found 494 */ 495int dev_read_first_prop(const struct udevice *dev, struct ofprop *prop); 496 497/** 498 * ofnode_get_next_property() - get the reference of the next property 499 * 500 * Get reference to the next property of the node, it is used to iterate 501 * and read all the property with dev_read_prop_by_prop(). 502 * 503 * @prop: reference of current argument and place to put reference of next one 504 * @return 0 if OK, -ve on error. -FDT_ERR_NOTFOUND if not found 505 */ 506int dev_read_next_prop(struct ofprop *prop); 507 508/** 509 * dev_read_prop_by_prop() - get a pointer to the value of a property 510 * 511 * Get value for the property identified by the provided reference. 512 * 513 * @prop: reference on property 514 * @propname: If non-NULL, place to property name on success, 515 * @lenp: If non-NULL, place to put length on success 516 * @return 0 if OK, -ve on error. -FDT_ERR_NOTFOUND if not found 517 */ 518const void *dev_read_prop_by_prop(struct ofprop *prop, 519 const char **propname, int *lenp); 520 521/** 522 * dev_read_alias_seq() - Get the alias sequence number of a node 523 * 524 * This works out whether a node is pointed to by an alias, and if so, the 525 * sequence number of that alias. Aliases are of the form <base><num> where 526 * <num> is the sequence number. For example spi2 would be sequence number 2. 527 * 528 * @dev: device to look up 529 * @devnump: set to the sequence number if one is found 530 * @return 0 if a sequence was found, -ve if not 531 */ 532int dev_read_alias_seq(const struct udevice *dev, int *devnump); 533 534/** 535 * dev_read_u32_array() - Find and read an array of 32 bit integers 536 * 537 * Search for a property in a device node and read 32-bit value(s) from 538 * it. 539 * 540 * The out_values is modified only if a valid u32 value can be decoded. 541 * 542 * @dev: device to look up 543 * @propname: name of the property to read 544 * @out_values: pointer to return value, modified only if return value is 0 545 * @sz: number of array elements to read 546 * @return 0 on success, -EINVAL if the property does not exist, -ENODATA if 547 * property does not have a value, and -EOVERFLOW if the property data isn't 548 * large enough. 549 */ 550int dev_read_u32_array(const struct udevice *dev, const char *propname, 551 u32 *out_values, size_t sz); 552 553/** 554 * dev_read_first_subnode() - find the first subnode of a device's node 555 * 556 * @dev: device to look up 557 * @return reference to the first subnode (which can be invalid if the device's 558 * node has no subnodes) 559 */ 560ofnode dev_read_first_subnode(const struct udevice *dev); 561 562/** 563 * ofnode_next_subnode() - find the next sibling of a subnode 564 * 565 * @node: valid reference to previous node (sibling) 566 * @return reference to the next subnode (which can be invalid if the node 567 * has no more siblings) 568 */ 569ofnode dev_read_next_subnode(ofnode node); 570 571/** 572 * dev_read_u8_array_ptr() - find an 8-bit array 573 * 574 * Look up a device's node property and return a pointer to its contents as a 575 * byte array of given length. The property must have at least enough data 576 * for the array (count bytes). It may have more, but this will be ignored. 577 * The data is not copied. 578 * 579 * @dev: device to look up 580 * @propname: name of property to find 581 * @sz: number of array elements 582 * @return pointer to byte array if found, or NULL if the property is not 583 * found or there is not enough data 584 */ 585const uint8_t *dev_read_u8_array_ptr(const struct udevice *dev, 586 const char *propname, size_t sz); 587 588/** 589 * dev_read_enabled() - check whether a node is enabled 590 * 591 * This looks for a 'status' property. If this exists, then returns 1 if 592 * the status is 'ok' and 0 otherwise. If there is no status property, 593 * it returns 1 on the assumption that anything mentioned should be enabled 594 * by default. 595 * 596 * @dev: device to examine 597 * @return integer value 0 (not enabled) or 1 (enabled) 598 */ 599int dev_read_enabled(const struct udevice *dev); 600 601/** 602 * dev_read_resource() - obtain an indexed resource from a device. 603 * 604 * @dev: device to examine 605 * @index index of the resource to retrieve (0 = first) 606 * @res returns the resource 607 * @return 0 if ok, negative on error 608 */ 609int dev_read_resource(const struct udevice *dev, uint index, 610 struct resource *res); 611 612/** 613 * dev_read_resource_byname() - obtain a named resource from a device. 614 * 615 * @dev: device to examine 616 * @name: name of the resource to retrieve 617 * @res: returns the resource 618 * @return 0 if ok, negative on error 619 */ 620int dev_read_resource_byname(const struct udevice *dev, const char *name, 621 struct resource *res); 622 623/** 624 * dev_translate_address() - Translate a device-tree address 625 * 626 * Translate an address from the device-tree into a CPU physical address. This 627 * function walks up the tree and applies the various bus mappings along the 628 * way. 629 * 630 * @dev: device giving the context in which to translate the address 631 * @in_addr: pointer to the address to translate 632 * @return the translated address; OF_BAD_ADDR on error 633 */ 634u64 dev_translate_address(const struct udevice *dev, const fdt32_t *in_addr); 635 636/** 637 * dev_translate_dma_address() - Translate a device-tree DMA address 638 * 639 * Translate a DMA address from the device-tree into a CPU physical address. 640 * This function walks up the tree and applies the various bus mappings along 641 * the way. 642 * 643 * @dev: device giving the context in which to translate the DMA address 644 * @in_addr: pointer to the DMA address to translate 645 * @return the translated DMA address; OF_BAD_ADDR on error 646 */ 647u64 dev_translate_dma_address(const struct udevice *dev, 648 const fdt32_t *in_addr); 649 650/** 651 * dev_get_dma_range() - Get a device's DMA constraints 652 * 653 * Provide the address bases and size of the linear mapping between the CPU and 654 * a device's BUS address space. 655 * 656 * @dev: device giving the context in which to translate the DMA address 657 * @cpu: base address for CPU's view of memory 658 * @bus: base address for BUS's view of memory 659 * @size: size of the address space 660 * @return 0 if ok, negative on error 661 */ 662int dev_get_dma_range(const struct udevice *dev, phys_addr_t *cpu, 663 dma_addr_t *bus, u64 *size); 664 665/** 666 * dev_read_alias_highest_id - Get highest alias id for the given stem 667 * @stem: Alias stem to be examined 668 * 669 * The function travels the lookup table to get the highest alias id for the 670 * given alias stem. 671 * @return alias ID, if found, else -1 672 */ 673int dev_read_alias_highest_id(const char *stem); 674 675/** 676 * dev_get_child_count() - get the child count of a device 677 * 678 * @dev: device to use for interation (struct udevice *) 679 * @return the count of child subnode 680 */ 681int dev_get_child_count(const struct udevice *dev); 682 683/** 684 * dev_read_pci_bus_range - Read PCI bus-range resource 685 * 686 * Look at the bus range property of a device node and return the pci bus 687 * range for this node. 688 * 689 * @dev: device to examine 690 * @res returns the resource 691 * @return 0 if ok, negative on error 692 */ 693int dev_read_pci_bus_range(const struct udevice *dev, struct resource *res); 694 695/** 696 * dev_decode_display_timing() - decode display timings 697 * 698 * Decode display timings from the supplied 'display-timings' node. 699 * See doc/device-tree-bindings/video/display-timing.txt for binding 700 * information. 701 * 702 * @dev: device to read DT display timings from. The node linked to the device 703 * contains a child node called 'display-timings' which in turn contains 704 * one or more display timing nodes. 705 * @index: index number to read (0=first timing subnode) 706 * @config: place to put timings 707 * @return 0 if OK, -FDT_ERR_NOTFOUND if not found 708 */ 709int dev_decode_display_timing(const struct udevice *dev, int index, 710 struct display_timing *config); 711 712#else /* CONFIG_DM_DEV_READ_INLINE is enabled */ 713#include <asm/global_data.h> 714 715static inline int dev_read_u32(const struct udevice *dev, 716 const char *propname, u32 *outp) 717{ 718 return ofnode_read_u32(dev_ofnode(dev), propname, outp); 719} 720 721static inline int dev_read_u32_default(const struct udevice *dev, 722 const char *propname, int def) 723{ 724 return ofnode_read_u32_default(dev_ofnode(dev), propname, def); 725} 726 727static inline int dev_read_u32_index(struct udevice *dev, 728 const char *propname, int index, u32 *outp) 729{ 730 return ofnode_read_u32_index(dev_ofnode(dev), propname, index, outp); 731} 732 733static inline u32 dev_read_u32_index_default(struct udevice *dev, 734 const char *propname, int index, 735 u32 def) 736{ 737 return ofnode_read_u32_index_default(dev_ofnode(dev), propname, index, 738 def); 739} 740 741static inline int dev_read_s32(const struct udevice *dev, 742 const char *propname, s32 *outp) 743{ 744 return ofnode_read_s32(dev_ofnode(dev), propname, outp); 745} 746 747static inline int dev_read_s32_default(const struct udevice *dev, 748 const char *propname, int def) 749{ 750 return ofnode_read_s32_default(dev_ofnode(dev), propname, def); 751} 752 753static inline int dev_read_u32u(const struct udevice *dev, 754 const char *propname, uint *outp) 755{ 756 u32 val; 757 int ret; 758 759 ret = ofnode_read_u32(dev_ofnode(dev), propname, &val); 760 if (ret) 761 return ret; 762 *outp = val; 763 764 return 0; 765} 766 767static inline int dev_read_u64(const struct udevice *dev, 768 const char *propname, u64 *outp) 769{ 770 return ofnode_read_u64(dev_ofnode(dev), propname, outp); 771} 772 773static inline u64 dev_read_u64_default(const struct udevice *dev, 774 const char *propname, u64 def) 775{ 776 return ofnode_read_u64_default(dev_ofnode(dev), propname, def); 777} 778 779static inline const char *dev_read_string(const struct udevice *dev, 780 const char *propname) 781{ 782 return ofnode_read_string(dev_ofnode(dev), propname); 783} 784 785static inline bool dev_read_bool(const struct udevice *dev, 786 const char *propname) 787{ 788 return ofnode_read_bool(dev_ofnode(dev), propname); 789} 790 791static inline ofnode dev_read_subnode(const struct udevice *dev, 792 const char *subbnode_name) 793{ 794 return ofnode_find_subnode(dev_ofnode(dev), subbnode_name); 795} 796 797static inline int dev_read_size(const struct udevice *dev, const char *propname) 798{ 799 return ofnode_read_size(dev_ofnode(dev), propname); 800} 801 802static inline fdt_addr_t dev_read_addr_index(const struct udevice *dev, 803 int index) 804{ 805 return devfdt_get_addr_index(dev, index); 806} 807 808static inline fdt_addr_t dev_read_addr_size_index(const struct udevice *dev, 809 int index, 810 fdt_size_t *size) 811{ 812 return devfdt_get_addr_size_index(dev, index, size); 813} 814 815static inline fdt_addr_t dev_read_addr_name(const struct udevice *dev, 816 const char *name) 817{ 818 return devfdt_get_addr_name(dev, name); 819} 820 821static inline fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, 822 const char *name, 823 fdt_size_t *size) 824{ 825 return devfdt_get_addr_size_name(dev, name, size); 826} 827 828static inline fdt_addr_t dev_read_addr(const struct udevice *dev) 829{ 830 return devfdt_get_addr(dev); 831} 832 833static inline void *dev_read_addr_ptr(const struct udevice *dev) 834{ 835 return devfdt_get_addr_ptr(dev); 836} 837 838static inline fdt_addr_t dev_read_addr_pci(const struct udevice *dev) 839{ 840 return devfdt_get_addr_pci(dev); 841} 842 843static inline void *dev_remap_addr(const struct udevice *dev) 844{ 845 return devfdt_remap_addr(dev); 846} 847 848static inline void *dev_remap_addr_index(const struct udevice *dev, int index) 849{ 850 return devfdt_remap_addr_index(dev, index); 851} 852 853static inline void *dev_remap_addr_name(const struct udevice *dev, 854 const char *name) 855{ 856 return devfdt_remap_addr_name(dev, name); 857} 858 859static inline fdt_addr_t dev_read_addr_size(const struct udevice *dev, 860 const char *propname, 861 fdt_size_t *sizep) 862{ 863 return ofnode_get_addr_size(dev_ofnode(dev), propname, sizep); 864} 865 866static inline const char *dev_read_name(const struct udevice *dev) 867{ 868 return ofnode_get_name(dev_ofnode(dev)); 869} 870 871static inline int dev_read_stringlist_search(const struct udevice *dev, 872 const char *propname, 873 const char *string) 874{ 875 return ofnode_stringlist_search(dev_ofnode(dev), propname, string); 876} 877 878static inline int dev_read_string_index(const struct udevice *dev, 879 const char *propname, int index, 880 const char **outp) 881{ 882 return ofnode_read_string_index(dev_ofnode(dev), propname, index, outp); 883} 884 885static inline int dev_read_string_count(const struct udevice *dev, 886 const char *propname) 887{ 888 return ofnode_read_string_count(dev_ofnode(dev), propname); 889} 890 891static inline int dev_read_phandle_with_args(const struct udevice *dev, 892 const char *list_name, const char *cells_name, int cell_count, 893 int index, struct ofnode_phandle_args *out_args) 894{ 895 return ofnode_parse_phandle_with_args(dev_ofnode(dev), list_name, 896 cells_name, cell_count, index, 897 out_args); 898} 899 900static inline int dev_count_phandle_with_args(const struct udevice *dev, 901 const char *list_name, const char *cells_name, int cell_count) 902{ 903 return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name, 904 cells_name, cell_count); 905} 906 907static inline int dev_read_addr_cells(const struct udevice *dev) 908{ 909 int parent = fdt_parent_offset(gd->fdt_blob, dev_of_offset(dev)); 910 911 return fdt_address_cells(gd->fdt_blob, parent); 912} 913 914static inline int dev_read_size_cells(const struct udevice *dev) 915{ 916 int parent = fdt_parent_offset(gd->fdt_blob, dev_of_offset(dev)); 917 918 return fdt_size_cells(gd->fdt_blob, parent); 919} 920 921static inline int dev_read_simple_addr_cells(const struct udevice *dev) 922{ 923 return fdt_address_cells(gd->fdt_blob, dev_of_offset(dev)); 924} 925 926static inline int dev_read_simple_size_cells(const struct udevice *dev) 927{ 928 return fdt_size_cells(gd->fdt_blob, dev_of_offset(dev)); 929} 930 931static inline int dev_read_phandle(const struct udevice *dev) 932{ 933 return fdt_get_phandle(gd->fdt_blob, dev_of_offset(dev)); 934} 935 936static inline const void *dev_read_prop(const struct udevice *dev, 937 const char *propname, int *lenp) 938{ 939 return ofnode_get_property(dev_ofnode(dev), propname, lenp); 940} 941 942static inline int dev_read_first_prop(const struct udevice *dev, struct ofprop *prop) 943{ 944 return ofnode_get_first_property(dev_ofnode(dev), prop); 945} 946 947static inline int dev_read_next_prop(struct ofprop *prop) 948{ 949 return ofnode_get_next_property(prop); 950} 951 952static inline const void *dev_read_prop_by_prop(struct ofprop *prop, 953 const char **propname, 954 int *lenp) 955{ 956 return ofnode_get_property_by_prop(prop, propname, lenp); 957} 958 959static inline int dev_read_alias_seq(const struct udevice *dev, int *devnump) 960{ 961#if CONFIG_IS_ENABLED(OF_CONTROL) 962 return fdtdec_get_alias_seq(gd->fdt_blob, dev->uclass->uc_drv->name, 963 dev_of_offset(dev), devnump); 964#else 965 return -ENOTSUPP; 966#endif 967} 968 969static inline int dev_read_u32_array(const struct udevice *dev, 970 const char *propname, u32 *out_values, 971 size_t sz) 972{ 973 return ofnode_read_u32_array(dev_ofnode(dev), propname, out_values, sz); 974} 975 976static inline ofnode dev_read_first_subnode(const struct udevice *dev) 977{ 978 return ofnode_first_subnode(dev_ofnode(dev)); 979} 980 981static inline ofnode dev_read_next_subnode(ofnode node) 982{ 983 return ofnode_next_subnode(node); 984} 985 986static inline const uint8_t *dev_read_u8_array_ptr(const struct udevice *dev, 987 const char *propname, 988 size_t sz) 989{ 990 return ofnode_read_u8_array_ptr(dev_ofnode(dev), propname, sz); 991} 992 993static inline int dev_read_enabled(const struct udevice *dev) 994{ 995 return fdtdec_get_is_enabled(gd->fdt_blob, dev_of_offset(dev)); 996} 997 998static inline int dev_read_resource(const struct udevice *dev, uint index, 999 struct resource *res) 1000{
1001 return ofnode_read_resource(dev_ofnode(dev), index, res); 1002} 1003 1004static inline int dev_read_resource_byname(const struct udevice *dev, 1005 const char *name, 1006 struct resource *res) 1007{ 1008 return ofnode_read_resource_byname(dev_ofnode(dev), name, res); 1009} 1010 1011static inline u64 dev_translate_address(const struct udevice *dev, 1012 const fdt32_t *in_addr) 1013{ 1014 return ofnode_translate_address(dev_ofnode(dev), in_addr); 1015} 1016 1017static inline u64 dev_translate_dma_address(const struct udevice *dev, 1018 const fdt32_t *in_addr) 1019{ 1020 return ofnode_translate_dma_address(dev_ofnode(dev), in_addr); 1021} 1022 1023static inline int dev_get_dma_range(const struct udevice *dev, phys_addr_t *cpu, 1024 dma_addr_t *bus, u64 *size) 1025{ 1026 return ofnode_get_dma_range(dev_ofnode(dev), cpu, bus, size); 1027} 1028 1029static inline int dev_read_alias_highest_id(const char *stem) 1030{ 1031 if (!CONFIG_IS_ENABLED(OF_LIBFDT) || !gd->fdt_blob) 1032 return -1; 1033 return fdtdec_get_alias_highest_id(gd->fdt_blob, stem); 1034} 1035 1036static inline int dev_get_child_count(const struct udevice *dev) 1037{ 1038 return ofnode_get_child_count(dev_ofnode(dev)); 1039} 1040 1041static inline int dev_decode_display_timing(const struct udevice *dev, 1042 int index, 1043 struct display_timing *config) 1044{ 1045 return ofnode_decode_display_timing(dev_ofnode(dev), index, config); 1046} 1047 1048#endif /* CONFIG_DM_DEV_READ_INLINE */ 1049 1050/** 1051 * dev_for_each_subnode() - Helper function to iterate through subnodes 1052 * 1053 * This creates a for() loop which works through the subnodes in a device's 1054 * device-tree node. 1055 * 1056 * @subnode: ofnode holding the current subnode 1057 * @dev: device to use for interation (struct udevice *) 1058 */ 1059#define dev_for_each_subnode(subnode, dev) \ 1060 for (subnode = dev_read_first_subnode(dev); \ 1061 ofnode_valid(subnode); \ 1062 subnode = ofnode_next_subnode(subnode)) 1063 1064/** 1065 * dev_for_each_property() - Helper function to iterate through property 1066 * 1067 * This creates a for() loop which works through the property in a device's 1068 * device-tree node. 1069 * 1070 * @prop: struct ofprop holding the current property 1071 * @dev: device to use for interation (struct udevice *) 1072 */ 1073#define dev_for_each_property(prop, dev) \ 1074 for (int ret_prop = dev_read_first_prop(dev, &prop); \ 1075 !ret_prop; \ 1076 ret_prop = dev_read_next_prop(&prop)) 1077 1078#endif 1079