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_index_ptr() - Get the indexed reg property of a device 185 * as a pointer 186 * 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 190 * 191 * @return pointer or NULL if not found 192 */ 193void *dev_read_addr_index_ptr(const struct udevice *dev, int index); 194 195/** 196 * dev_read_addr_size_index() - Get the indexed reg property of a device 197 * 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) 202 * 203 * @return address or FDT_ADDR_T_NONE if not found 204 */ 205fdt_addr_t dev_read_addr_size_index(const struct udevice *dev, int index, 206 fdt_size_t *size); 207 208/** 209 * dev_remap_addr_index() - Get the indexed reg property of a device 210 * as a memory-mapped I/O pointer 211 * 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 215 * 216 * @return pointer or NULL if not found 217 */ 218void *dev_remap_addr_index(const struct udevice *dev, int index); 219 220/** 221 * dev_read_addr_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 * 228 * @return address or FDT_ADDR_T_NONE if not found 229 */ 230fdt_addr_t dev_read_addr_name(const struct udevice *dev, const char *name); 231 232/** 233 * dev_read_addr_size_name() - Get the reg property of a device, indexed by name 234 * 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) 240 * 241 * @return address or FDT_ADDR_T_NONE if not found 242 */ 243fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, const char *name, 244 fdt_size_t *size); 245 246/** 247 * dev_remap_addr_name() - Get the reg property of a device, indexed by name, 248 * as a memory-mapped I/O pointer 249 * 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'. 254 * 255 * @return pointer or NULL if not found 256 */ 257void *dev_remap_addr_name(const struct udevice *dev, const char *name); 258 259/** 260 * dev_read_addr() - Get the reg property of a device 261 * 262 * @dev: Device to read from 263 * 264 * @return address or FDT_ADDR_T_NONE if not found 265 */ 266fdt_addr_t dev_read_addr(const struct udevice *dev); 267 268/** 269 * dev_read_addr_ptr() - Get the reg property of a device 270 * as a pointer 271 * 272 * @dev: Device to read from 273 * 274 * @return pointer or NULL if not found 275 */ 276void *dev_read_addr_ptr(const struct udevice *dev); 277 278/** 279 * dev_read_addr_pci() - Read an address and handle PCI address translation 280 * 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. 284 * 285 * This function should be removed (and code should use dev_read() instead) 286 * once: 287 * 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. 292 * 293 * @dev: Device to read from 294 * @return address or FDT_ADDR_T_NONE if not found 295 */ 296fdt_addr_t dev_read_addr_pci(const struct udevice *dev); 297 298/** 299 * dev_remap_addr() - Get the reg property of a device as a 300 * memory-mapped I/O pointer 301 * 302 * @dev: Device to read from 303 * 304 * @return pointer or NULL if not found 305 */ 306void *dev_remap_addr(const struct udevice *dev); 307 308/** 309 * dev_read_addr_size() - get address and size from a device property 310 * 311 * This does no address translation. It simply reads an property that contains 312 * an address and a size value, one after the other. 313 * 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 318 */ 319fdt_addr_t dev_read_addr_size(const struct udevice *dev, const char *propname, 320 fdt_size_t *sizep); 321 322/** 323 * dev_read_name() - get the name of a device's node 324 * 325 * @dev: Device to read from 326 * @return name of node 327 */ 328const char *dev_read_name(const struct udevice *dev); 329 330/** 331 * dev_read_stringlist_search() - find string in a string list and return index 332 * 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 337 * the empty string. 338 * 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 342 * 343 * @return: 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 347 */ 348int dev_read_stringlist_search(const struct udevice *dev, const char *property, 349 const char *string); 350 351/** 352 * dev_read_string_index() - obtain an indexed string from a string list 353 * 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 358 * 359 * @return: 360 * length of string, if found or -ve error value if not found 361 */ 362int dev_read_string_index(const struct udevice *dev, const char *propname, 363 int index, const char **outp); 364 365/** 366 * dev_read_string_count() - find the number of strings in a string list 367 * 368 * @dev: device to examine 369 * @propname: name of the property containing the string list 370 * @return: 371 * number of strings in the list, or -ve error value if not found 372 */ 373int dev_read_string_count(const struct udevice *dev, const char *propname); 374/** 375 * dev_read_phandle_with_args() - Find a node pointed by phandle in a list 376 * 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 379 * errno value. 380 * 381 * Caller is responsible to call of_node_put() on the returned out_args->np 382 * pointer. 383 * 384 * Example: 385 * 386 * phandle1: node1 { 387 * #list-cells = <2>; 388 * } 389 * 390 * phandle2: node2 { 391 * #list-cells = <1>; 392 * } 393 * 394 * node3 { 395 * list = <&phandle1 1 2 &phandle2 3>; 396 * } 397 * 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); 400 * 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. 411 */ 412int 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); 415 416/** 417 * dev_count_phandle_with_args() - Return phandle number in a list 418 * 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. 422 * 423 * 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 429 * errno value. 430 */ 431 432int dev_count_phandle_with_args(const struct udevice *dev, 433 const char *list_name, const char *cells_name, 434 int cell_count); 435 436/** 437 * dev_read_addr_cells() - Get the number of address cells for a device's node 438 * 439 * This walks back up the tree to find the closest #address-cells property 440 * which controls the given node. 441 * 442 * @dev: device to check 443 * @return number of address cells this node uses 444 */ 445int dev_read_addr_cells(const struct udevice *dev); 446 447/** 448 * dev_read_size_cells() - Get the number of size cells for a device's node 449 * 450 * This walks back up the tree to find the closest #size-cells property 451 * which controls the given node. 452 * 453 * @dev: device to check 454 * @return number of size cells this node uses 455 */ 456int dev_read_size_cells(const struct udevice *dev); 457 458/** 459 * dev_read_addr_cells() - Get the address cells property in a node 460 * 461 * This function matches fdt_address_cells(). 462 * 463 * @dev: device to check 464 * @return number of address cells this node uses 465 */ 466int dev_read_simple_addr_cells(const struct udevice *dev); 467 468/** 469 * dev_read_size_cells() - Get the size cells property in a node 470 * 471 * This function matches fdt_size_cells(). 472 * 473 * @dev: device to check 474 * @return number of size cells this node uses 475 */ 476int dev_read_simple_size_cells(const struct udevice *dev); 477 478/** 479 * dev_read_phandle() - Get the phandle from a device 480 * 481 * @dev: device to check 482 * @return phandle (1 or greater), or 0 if no phandle or other error 483 */ 484int dev_read_phandle(const struct udevice *dev); 485 486/** 487 * dev_read_prop()- - read a property from a device's node 488 * 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 493 */ 494const void *dev_read_prop(const struct udevice *dev, const char *propname, 495 int *lenp); 496 497/** 498 * dev_read_first_prop()- get the reference of the first property 499 * 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(). 502 * 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 506 */ 507int dev_read_first_prop(const struct udevice *dev, struct ofprop *prop); 508 509/** 510 * ofnode_get_next_property() - get the reference of the next property 511 * 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(). 514 * 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 517 */ 518int dev_read_next_prop(struct ofprop *prop); 519 520/** 521 * dev_read_prop_by_prop() - get a pointer to the value of a property 522 * 523 * Get value for the property identified by the provided reference. 524 * 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 529 */ 530const void *dev_read_prop_by_prop(struct ofprop *prop, 531 const char **propname, int *lenp); 532 533/** 534 * dev_read_alias_seq() - Get the alias sequence number of a node 535 * 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. 539 * 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 543 */ 544int dev_read_alias_seq(const struct udevice *dev, int *devnump); 545 546/** 547 * dev_read_u32_array() - Find and read an array of 32 bit integers 548 * 549 * Search for a property in a device node and read 32-bit value(s) from 550 * it. 551 * 552 * The out_values is modified only if a valid u32 value can be decoded. 553 * 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 560 * large enough. 561 */ 562int dev_read_u32_array(const struct udevice *dev, const char *propname, 563 u32 *out_values, size_t sz); 564 565/** 566 * dev_read_first_subnode() - find the first subnode of a device's node 567 * 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) 571 */ 572ofnode dev_read_first_subnode(const struct udevice *dev); 573 574/** 575 * ofnode_next_subnode() - find the next sibling of a subnode 576 * 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) 580 */ 581ofnode dev_read_next_subnode(ofnode node); 582 583/** 584 * dev_read_u8_array_ptr() - find an 8-bit array 585 * 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. 590 * 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 596 */ 597const uint8_t *dev_read_u8_array_ptr(const struct udevice *dev, 598 const char *propname, size_t sz); 599 600/** 601 * dev_read_enabled() - check whether a node is enabled 602 * 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 606 * by default. 607 * 608 * @dev: device to examine 609 * @return integer value 0 (not enabled) or 1 (enabled) 610 */ 611int dev_read_enabled(const struct udevice *dev); 612 613/** 614 * dev_read_resource() - obtain an indexed resource from a device. 615 * 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 620 */ 621int dev_read_resource(const struct udevice *dev, uint index, 622 struct resource *res); 623 624/** 625 * dev_read_resource_byname() - obtain a named resource from a device. 626 * 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 631 */ 632int dev_read_resource_byname(const struct udevice *dev, const char *name, 633 struct resource *res); 634 635/** 636 * dev_translate_address() - Translate a device-tree address 637 * 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 640 * way. 641 * 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 645 */ 646u64 dev_translate_address(const struct udevice *dev, const fdt32_t *in_addr); 647 648/** 649 * dev_translate_dma_address() - Translate a device-tree DMA address 650 * 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 653 * the way. 654 * 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 658 */ 659u64 dev_translate_dma_address(const struct udevice *dev, 660 const fdt32_t *in_addr); 661 662/** 663 * dev_get_dma_range() - Get a device's DMA constraints 664 * 665 * Provide the address bases and size of the linear mapping between the CPU and 666 * a device's BUS address space. 667 * 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 673 */ 674int dev_get_dma_range(const struct udevice *dev, phys_addr_t *cpu, 675 dma_addr_t *bus, u64 *size); 676 677/** 678 * dev_read_alias_highest_id - Get highest alias id for the given stem 679 * @stem: Alias stem to be examined 680 * 681 * The function travels the lookup table to get the highest alias id for the 682 * given alias stem. 683 * @return alias ID, if found, else -1 684 */ 685int dev_read_alias_highest_id(const char *stem); 686 687/** 688 * dev_get_child_count() - get the child count of a device 689 * 690 * @dev: device to use for interation (struct udevice *) 691 * @return the count of child subnode 692 */ 693int dev_get_child_count(const struct udevice *dev); 694 695/** 696 * dev_read_pci_bus_range - Read PCI bus-range resource 697 * 698 * Look at the bus range property of a device node and return the pci bus 699 * range for this node. 700 * 701 * @dev: device to examine 702 * @res returns the resource 703 * @return 0 if ok, negative on error 704 */ 705int dev_read_pci_bus_range(const struct udevice *dev, struct resource *res); 706 707/** 708 * dev_decode_display_timing() - decode display timings 709 * 710 * Decode display timings from the supplied 'display-timings' node. 711 * See doc/device-tree-bindings/video/display-timing.txt for binding 712 * information. 713 * 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 720 */ 721int dev_decode_display_timing(const struct udevice *dev, int index, 722 struct display_timing *config); 723 724#else /* CONFIG_DM_DEV_READ_INLINE is enabled */ 725#include <asm/global_data.h> 726 727static inline int dev_read_u32(const struct udevice *dev, 728 const char *propname, u32 *outp) 729{ 730 return ofnode_read_u32(dev_ofnode(dev), propname, outp); 731} 732 733static inline int dev_read_u32_default(const struct udevice *dev, 734 const char *propname, int def) 735{ 736 return ofnode_read_u32_default(dev_ofnode(dev), propname, def); 737} 738 739static inline int dev_read_u32_index(struct udevice *dev, 740 const char *propname, int index, u32 *outp) 741{ 742 return ofnode_read_u32_index(dev_ofnode(dev), propname, index, outp); 743} 744 745static inline u32 dev_read_u32_index_default(struct udevice *dev, 746 const char *propname, int index, 747 u32 def) 748{ 749 return ofnode_read_u32_index_default(dev_ofnode(dev), propname, index, 750 def); 751} 752 753static inline int dev_read_s32(const struct udevice *dev, 754 const char *propname, s32 *outp) 755{ 756 return ofnode_read_s32(dev_ofnode(dev), propname, outp); 757} 758 759static inline int dev_read_s32_default(const struct udevice *dev, 760 const char *propname, int def) 761{ 762 return ofnode_read_s32_default(dev_ofnode(dev), propname, def); 763} 764 765static inline int dev_read_u32u(const struct udevice *dev, 766 const char *propname, uint *outp) 767{ 768 u32 val; 769 int ret; 770 771 ret = ofnode_read_u32(dev_ofnode(dev), propname, &val); 772 if (ret) 773 return ret; 774 *outp = val; 775 776 return 0; 777} 778 779static inline int dev_read_u64(const struct udevice *dev, 780 const char *propname, u64 *outp) 781{ 782 return ofnode_read_u64(dev_ofnode(dev), propname, outp); 783} 784 785static inline u64 dev_read_u64_default(const struct udevice *dev, 786 const char *propname, u64 def) 787{ 788 return ofnode_read_u64_default(dev_ofnode(dev), propname, def); 789} 790 791static inline const char *dev_read_string(const struct udevice *dev, 792 const char *propname) 793{ 794 return ofnode_read_string(dev_ofnode(dev), propname); 795} 796 797static inline bool dev_read_bool(const struct udevice *dev, 798 const char *propname) 799{ 800 return ofnode_read_bool(dev_ofnode(dev), propname); 801} 802 803static inline ofnode dev_read_subnode(const struct udevice *dev, 804 const char *subbnode_name) 805{ 806 return ofnode_find_subnode(dev_ofnode(dev), subbnode_name); 807} 808 809static inline int dev_read_size(const struct udevice *dev, const char *propname) 810{ 811 return ofnode_read_size(dev_ofnode(dev), propname); 812} 813 814static inline fdt_addr_t dev_read_addr_index(const struct udevice *dev, 815 int index) 816{ 817 return devfdt_get_addr_index(dev, index); 818} 819 820static inline void *dev_read_addr_index_ptr(const struct udevice *dev, 821 int index) 822{ 823 return devfdt_get_addr_index_ptr(dev, index); 824} 825 826static inline fdt_addr_t dev_read_addr_size_index(const struct udevice *dev, 827 int index, 828 fdt_size_t *size) 829{ 830 return devfdt_get_addr_size_index(dev, index, size); 831} 832 833static inline fdt_addr_t dev_read_addr_name(const struct udevice *dev, 834 const char *name) 835{ 836 return devfdt_get_addr_name(dev, name); 837} 838 839static inline fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, 840 const char *name, 841 fdt_size_t *size) 842{ 843 return devfdt_get_addr_size_name(dev, name, size); 844} 845 846static inline fdt_addr_t dev_read_addr(const struct udevice *dev) 847{ 848 return devfdt_get_addr(dev); 849} 850 851static inline void *dev_read_addr_ptr(const struct udevice *dev) 852{ 853 return devfdt_get_addr_ptr(dev); 854} 855 856static inline fdt_addr_t dev_read_addr_pci(const struct udevice *dev) 857{ 858 return devfdt_get_addr_pci(dev); 859} 860 861static inline void *dev_remap_addr(const struct udevice *dev) 862{ 863 return devfdt_remap_addr(dev); 864} 865 866static inline void *dev_remap_addr_index(const struct udevice *dev, int index) 867{ 868 return devfdt_remap_addr_index(dev, index); 869} 870 871static inline void *dev_remap_addr_name(const struct udevice *dev, 872 const char *name) 873{ 874 return devfdt_remap_addr_name(dev, name); 875} 876 877static inline fdt_addr_t dev_read_addr_size(const struct udevice *dev, 878 const char *propname, 879 fdt_size_t *sizep) 880{ 881 return ofnode_get_addr_size(dev_ofnode(dev), propname, sizep); 882} 883 884static inline const char *dev_read_name(const struct udevice *dev) 885{ 886 return ofnode_get_name(dev_ofnode(dev)); 887} 888 889static inline int dev_read_stringlist_search(const struct udevice *dev, 890 const char *propname, 891 const char *string) 892{ 893 return ofnode_stringlist_search(dev_ofnode(dev), propname, string); 894} 895 896static inline int dev_read_string_index(const struct udevice *dev, 897 const char *propname, int index, 898 const char **outp) 899{ 900 return ofnode_read_string_index(dev_ofnode(dev), propname, index, outp); 901} 902 903static inline int dev_read_string_count(const struct udevice *dev, 904 const char *propname) 905{ 906 return ofnode_read_string_count(dev_ofnode(dev), propname); 907} 908 909static 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) 912{ 913 return ofnode_parse_phandle_with_args(dev_ofnode(dev), list_name, 914 cells_name, cell_count, index, 915 out_args); 916} 917 918static inline int dev_count_phandle_with_args(const struct udevice *dev, 919 const char *list_name, const char *cells_name, int cell_count) 920{ 921 return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name, 922 cells_name, cell_count); 923} 924 925static inline int dev_read_addr_cells(const struct udevice *dev) 926{ 927 int parent = fdt_parent_offset(gd->fdt_blob, dev_of_offset(dev)); 928 929 return fdt_address_cells(gd->fdt_blob, parent); 930} 931 932static inline int dev_read_size_cells(const struct udevice *dev) 933{ 934 int parent = fdt_parent_offset(gd->fdt_blob, dev_of_offset(dev)); 935 936 return fdt_size_cells(gd->fdt_blob, parent); 937} 938 939static inline int dev_read_simple_addr_cells(const struct udevice *dev) 940{ 941 return fdt_address_cells(gd->fdt_blob, dev_of_offset(dev)); 942} 943 944static inline int dev_read_simple_size_cells(const struct udevice *dev) 945{ 946 return fdt_size_cells(gd->fdt_blob, dev_of_offset(dev)); 947} 948 949static inline int dev_read_phandle(const struct udevice *dev) 950{ 951 return fdt_get_phandle(gd->fdt_blob, dev_of_offset(dev)); 952} 953 954static inline const void *dev_read_prop(const struct udevice *dev, 955 const char *propname, int *lenp) 956{ 957 return ofnode_get_property(dev_ofnode(dev), propname, lenp); 958} 959 960static inline int dev_read_first_prop(const struct udevice *dev, struct ofprop *prop) 961{ 962 return ofnode_get_first_property(dev_ofnode(dev), prop); 963} 964 965static inline int dev_read_next_prop(struct ofprop *prop) 966{ 967 return ofnode_get_next_property(prop); 968} 969 970static inline const void *dev_read_prop_by_prop(struct ofprop *prop, 971 const char **propname, 972 int *lenp) 973{ 974 return ofnode_get_property_by_prop(prop, propname, lenp); 975} 976 977static inline int dev_read_alias_seq(const struct udevice *dev, int *devnump) 978{ 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); 982#else 983 return -ENOTSUPP; 984#endif 985} 986 987static inline int dev_read_u32_array(const struct udevice *dev, 988 const char *propname, u32 *out_values, 989 size_t sz) 990{ 991 return ofnode_read_u32_array(dev_ofnode(dev), propname, out_values, sz); 992} 993 994static inline ofnode dev_read_first_subnode(const struct udevice *dev) 995{ 996 return ofnode_first_subnode(dev_ofnode(dev)); 997} 998 999static inline ofnode dev_read_next_subnode(ofnode node) 1000{
1001 return ofnode_next_subnode(node); 1002} 1003 1004static inline const uint8_t *dev_read_u8_array_ptr(const struct udevice *dev, 1005 const char *propname, 1006 size_t sz) 1007{ 1008 return ofnode_read_u8_array_ptr(dev_ofnode(dev), propname, sz); 1009} 1010 1011static inline int dev_read_enabled(const struct udevice *dev) 1012{ 1013 return fdtdec_get_is_enabled(gd->fdt_blob, dev_of_offset(dev)); 1014} 1015 1016static inline int dev_read_resource(const struct udevice *dev, uint index, 1017 struct resource *res) 1018{ 1019 return ofnode_read_resource(dev_ofnode(dev), index, res); 1020} 1021 1022static inline int dev_read_resource_byname(const struct udevice *dev, 1023 const char *name, 1024 struct resource *res) 1025{ 1026 return ofnode_read_resource_byname(dev_ofnode(dev), name, res); 1027} 1028 1029static inline u64 dev_translate_address(const struct udevice *dev, 1030 const fdt32_t *in_addr) 1031{ 1032 return ofnode_translate_address(dev_ofnode(dev), in_addr); 1033} 1034 1035static inline u64 dev_translate_dma_address(const struct udevice *dev, 1036 const fdt32_t *in_addr) 1037{ 1038 return ofnode_translate_dma_address(dev_ofnode(dev), in_addr); 1039} 1040 1041static inline int dev_get_dma_range(const struct udevice *dev, phys_addr_t *cpu, 1042 dma_addr_t *bus, u64 *size) 1043{ 1044 return ofnode_get_dma_range(dev_ofnode(dev), cpu, bus, size); 1045} 1046 1047static inline int dev_read_alias_highest_id(const char *stem) 1048{ 1049 if (!CONFIG_IS_ENABLED(OF_LIBFDT) || !gd->fdt_blob) 1050 return -1; 1051 return fdtdec_get_alias_highest_id(gd->fdt_blob, stem); 1052} 1053 1054static inline int dev_get_child_count(const struct udevice *dev) 1055{ 1056 return ofnode_get_child_count(dev_ofnode(dev)); 1057} 1058 1059static inline int dev_decode_display_timing(const struct udevice *dev, 1060 int index, 1061 struct display_timing *config) 1062{ 1063 return ofnode_decode_display_timing(dev_ofnode(dev), index, config); 1064} 1065 1066#endif /* CONFIG_DM_DEV_READ_INLINE */ 1067 1068/** 1069 * dev_for_each_subnode() - Helper function to iterate through subnodes 1070 * 1071 * This creates a for() loop which works through the subnodes in a device's 1072 * device-tree node. 1073 * 1074 * @subnode: ofnode holding the current subnode 1075 * @dev: device to use for interation (struct udevice *) 1076 */ 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)) 1081 1082/** 1083 * dev_for_each_property() - Helper function to iterate through property 1084 * 1085 * This creates a for() loop which works through the property in a device's 1086 * device-tree node. 1087 * 1088 * @prop: struct ofprop holding the current property 1089 * @dev: device to use for interation (struct udevice *) 1090 */ 1091#define dev_for_each_property(prop, dev) \ 1092 for (int ret_prop = dev_read_first_prop(dev, &prop); \ 1093 !ret_prop; \ 1094 ret_prop = dev_read_next_prop(&prop)) 1095 1096#endif 1097