1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * acpi_bus.h - ACPI Bus Driver ($Revision: 22 $) 4 * 5 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> 6 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> 7 */ 8 9 #ifndef __ACPI_BUS_H__ 10 #define __ACPI_BUS_H__ 11 12 #include <linux/device.h> 13 #include <linux/property.h> 14 15 /* TBD: Make dynamic */ 16 #define ACPI_MAX_HANDLES 10 17 struct acpi_handle_list { 18 u32 count; 19 acpi_handle handles[ACPI_MAX_HANDLES]; 20 }; 21 22 /* acpi_utils.h */ 23 acpi_status 24 acpi_extract_package(union acpi_object *package, 25 struct acpi_buffer *format, struct acpi_buffer *buffer); 26 acpi_status 27 acpi_evaluate_integer(acpi_handle handle, 28 acpi_string pathname, 29 struct acpi_object_list *arguments, unsigned long long *data); 30 acpi_status 31 acpi_evaluate_reference(acpi_handle handle, 32 acpi_string pathname, 33 struct acpi_object_list *arguments, 34 struct acpi_handle_list *list); 35 acpi_status 36 acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code, 37 struct acpi_buffer *status_buf); 38 39 acpi_status 40 acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld); 41 42 bool acpi_has_method(acpi_handle handle, char *name); 43 acpi_status acpi_execute_simple_method(acpi_handle handle, char *method, 44 u64 arg); 45 acpi_status acpi_evaluate_ej0(acpi_handle handle); 46 acpi_status acpi_evaluate_lck(acpi_handle handle, int lock); 47 acpi_status acpi_evaluate_reg(acpi_handle handle, u8 space_id, u32 function); 48 bool acpi_ata_match(acpi_handle handle); 49 bool acpi_bay_match(acpi_handle handle); 50 bool acpi_dock_match(acpi_handle handle); 51 52 bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs); 53 union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid, 54 u64 rev, u64 func, union acpi_object *argv4); 55 56 static inline union acpi_object * 57 acpi_evaluate_dsm_typed(acpi_handle handle, const guid_t *guid, u64 rev, 58 u64 func, union acpi_object *argv4, 59 acpi_object_type type) 60 { 61 union acpi_object *obj; 62 63 obj = acpi_evaluate_dsm(handle, guid, rev, func, argv4); 64 if (obj && obj->type != type) { 65 ACPI_FREE(obj); 66 obj = NULL; 67 } 68 69 return obj; 70 } 71 72 #define ACPI_INIT_DSM_ARGV4(cnt, eles) \ 73 { \ 74 .package.type = ACPI_TYPE_PACKAGE, \ 75 .package.count = (cnt), \ 76 .package.elements = (eles) \ 77 } 78 79 bool acpi_dev_found(const char *hid); 80 bool acpi_dev_present(const char *hid, const char *uid, s64 hrv); 81 82 #ifdef CONFIG_ACPI 83 84 struct proc_dir_entry; 85 86 #define ACPI_BUS_FILE_ROOT "acpi" 87 extern struct proc_dir_entry *acpi_root_dir; 88 89 enum acpi_bus_device_type { 90 ACPI_BUS_TYPE_DEVICE = 0, 91 ACPI_BUS_TYPE_POWER, 92 ACPI_BUS_TYPE_PROCESSOR, 93 ACPI_BUS_TYPE_THERMAL, 94 ACPI_BUS_TYPE_POWER_BUTTON, 95 ACPI_BUS_TYPE_SLEEP_BUTTON, 96 ACPI_BUS_TYPE_ECDT_EC, 97 ACPI_BUS_DEVICE_TYPE_COUNT 98 }; 99 100 struct acpi_driver; 101 struct acpi_device; 102 103 /* 104 * ACPI Scan Handler 105 * ----------------- 106 */ 107 108 struct acpi_hotplug_profile { 109 struct kobject kobj; 110 int (*scan_dependent)(struct acpi_device *adev); 111 void (*notify_online)(struct acpi_device *adev); 112 bool enabled:1; 113 bool demand_offline:1; 114 }; 115 116 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile( 117 struct kobject *kobj) 118 { 119 return container_of(kobj, struct acpi_hotplug_profile, kobj); 120 } 121 122 struct acpi_scan_handler { 123 const struct acpi_device_id *ids; 124 struct list_head list_node; 125 bool (*match)(const char *idstr, const struct acpi_device_id **matchid); 126 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id); 127 void (*detach)(struct acpi_device *dev); 128 void (*bind)(struct device *phys_dev); 129 void (*unbind)(struct device *phys_dev); 130 struct acpi_hotplug_profile hotplug; 131 }; 132 133 /* 134 * ACPI Hotplug Context 135 * -------------------- 136 */ 137 138 struct acpi_hotplug_context { 139 struct acpi_device *self; 140 int (*notify)(struct acpi_device *, u32); 141 void (*uevent)(struct acpi_device *, u32); 142 void (*fixup)(struct acpi_device *); 143 }; 144 145 /* 146 * ACPI Driver 147 * ----------- 148 */ 149 150 typedef int (*acpi_op_add) (struct acpi_device * device); 151 typedef int (*acpi_op_remove) (struct acpi_device * device); 152 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event); 153 154 struct acpi_device_ops { 155 acpi_op_add add; 156 acpi_op_remove remove; 157 acpi_op_notify notify; 158 }; 159 160 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */ 161 162 struct acpi_driver { 163 char name[80]; 164 char class[80]; 165 const struct acpi_device_id *ids; /* Supported Hardware IDs */ 166 unsigned int flags; 167 struct acpi_device_ops ops; 168 struct device_driver drv; 169 struct module *owner; 170 }; 171 172 /* 173 * ACPI Device 174 * ----------- 175 */ 176 177 /* Status (_STA) */ 178 179 struct acpi_device_status { 180 u32 present:1; 181 u32 enabled:1; 182 u32 show_in_ui:1; 183 u32 functional:1; 184 u32 battery_present:1; 185 u32 reserved:27; 186 }; 187 188 /* Flags */ 189 190 struct acpi_device_flags { 191 u32 dynamic_status:1; 192 u32 removable:1; 193 u32 ejectable:1; 194 u32 power_manageable:1; 195 u32 match_driver:1; 196 u32 initialized:1; 197 u32 visited:1; 198 u32 hotplug_notify:1; 199 u32 is_dock_station:1; 200 u32 of_compatible_ok:1; 201 u32 coherent_dma:1; 202 u32 cca_seen:1; 203 u32 enumeration_by_parent:1; 204 u32 reserved:19; 205 }; 206 207 /* File System */ 208 209 struct acpi_device_dir { 210 struct proc_dir_entry *entry; 211 }; 212 213 #define acpi_device_dir(d) ((d)->dir.entry) 214 215 /* Plug and Play */ 216 217 typedef char acpi_bus_id[8]; 218 typedef u64 acpi_bus_address; 219 typedef char acpi_device_name[40]; 220 typedef char acpi_device_class[20]; 221 222 struct acpi_hardware_id { 223 struct list_head list; 224 const char *id; 225 }; 226 227 struct acpi_pnp_type { 228 u32 hardware_id:1; 229 u32 bus_address:1; 230 u32 platform_id:1; 231 u32 reserved:29; 232 }; 233 234 struct acpi_device_pnp { 235 acpi_bus_id bus_id; /* Object name */ 236 int instance_no; /* Instance number of this object */ 237 struct acpi_pnp_type type; /* ID type */ 238 acpi_bus_address bus_address; /* _ADR */ 239 char *unique_id; /* _UID */ 240 struct list_head ids; /* _HID and _CIDs */ 241 acpi_device_name device_name; /* Driver-determined */ 242 acpi_device_class device_class; /* " */ 243 union acpi_object *str_obj; /* unicode string for _STR method */ 244 }; 245 246 #define acpi_device_bid(d) ((d)->pnp.bus_id) 247 #define acpi_device_adr(d) ((d)->pnp.bus_address) 248 const char *acpi_device_hid(struct acpi_device *device); 249 #define acpi_device_uid(d) ((d)->pnp.unique_id) 250 #define acpi_device_name(d) ((d)->pnp.device_name) 251 #define acpi_device_class(d) ((d)->pnp.device_class) 252 253 /* Power Management */ 254 255 struct acpi_device_power_flags { 256 u32 explicit_get:1; /* _PSC present? */ 257 u32 power_resources:1; /* Power resources */ 258 u32 inrush_current:1; /* Serialize Dx->D0 */ 259 u32 power_removed:1; /* Optimize Dx->D0 */ 260 u32 ignore_parent:1; /* Power is independent of parent power state */ 261 u32 dsw_present:1; /* _DSW present? */ 262 u32 reserved:26; 263 }; 264 265 struct acpi_device_power_state { 266 struct { 267 u8 valid:1; 268 u8 explicit_set:1; /* _PSx present? */ 269 u8 reserved:6; 270 } flags; 271 int power; /* % Power (compared to D0) */ 272 int latency; /* Dx->D0 time (microseconds) */ 273 struct list_head resources; /* Power resources referenced */ 274 }; 275 276 struct acpi_device_power { 277 int state; /* Current state */ 278 struct acpi_device_power_flags flags; 279 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */ 280 }; 281 282 /* Performance Management */ 283 284 struct acpi_device_perf_flags { 285 u8 reserved:8; 286 }; 287 288 struct acpi_device_perf_state { 289 struct { 290 u8 valid:1; 291 u8 reserved:7; 292 } flags; 293 u8 power; /* % Power (compared to P0) */ 294 u8 performance; /* % Performance ( " ) */ 295 int latency; /* Px->P0 time (microseconds) */ 296 }; 297 298 struct acpi_device_perf { 299 int state; 300 struct acpi_device_perf_flags flags; 301 int state_count; 302 struct acpi_device_perf_state *states; 303 }; 304 305 /* Wakeup Management */ 306 struct acpi_device_wakeup_flags { 307 u8 valid:1; /* Can successfully enable wakeup? */ 308 u8 notifier_present:1; /* Wake-up notify handler has been installed */ 309 }; 310 311 struct acpi_device_wakeup_context { 312 void (*func)(struct acpi_device_wakeup_context *context); 313 struct device *dev; 314 }; 315 316 struct acpi_device_wakeup { 317 acpi_handle gpe_device; 318 u64 gpe_number; 319 u64 sleep_state; 320 struct list_head resources; 321 struct acpi_device_wakeup_flags flags; 322 struct acpi_device_wakeup_context context; 323 struct wakeup_source *ws; 324 int prepare_count; 325 int enable_count; 326 }; 327 328 struct acpi_device_physical_node { 329 unsigned int node_id; 330 struct list_head node; 331 struct device *dev; 332 bool put_online:1; 333 }; 334 335 struct acpi_device_properties { 336 const guid_t *guid; 337 const union acpi_object *properties; 338 struct list_head list; 339 }; 340 341 /* ACPI Device Specific Data (_DSD) */ 342 struct acpi_device_data { 343 const union acpi_object *pointer; 344 struct list_head properties; 345 const union acpi_object *of_compatible; 346 struct list_head subnodes; 347 }; 348 349 struct acpi_gpio_mapping; 350 351 /* Device */ 352 struct acpi_device { 353 int device_type; 354 acpi_handle handle; /* no handle for fixed hardware */ 355 struct fwnode_handle fwnode; 356 struct acpi_device *parent; 357 struct list_head children; 358 struct list_head node; 359 struct list_head wakeup_list; 360 struct list_head del_list; 361 struct acpi_device_status status; 362 struct acpi_device_flags flags; 363 struct acpi_device_pnp pnp; 364 struct acpi_device_power power; 365 struct acpi_device_wakeup wakeup; 366 struct acpi_device_perf performance; 367 struct acpi_device_dir dir; 368 struct acpi_device_data data; 369 struct acpi_scan_handler *handler; 370 struct acpi_hotplug_context *hp; 371 struct acpi_driver *driver; 372 const struct acpi_gpio_mapping *driver_gpios; 373 void *driver_data; 374 struct device dev; 375 unsigned int physical_node_count; 376 unsigned int dep_unmet; 377 struct list_head physical_node_list; 378 struct mutex physical_node_lock; 379 void (*remove)(struct acpi_device *); 380 }; 381 382 /* Non-device subnode */ 383 struct acpi_data_node { 384 const char *name; 385 acpi_handle handle; 386 struct fwnode_handle fwnode; 387 struct fwnode_handle *parent; 388 struct acpi_device_data data; 389 struct list_head sibling; 390 struct kobject kobj; 391 struct completion kobj_done; 392 }; 393 394 extern const struct fwnode_operations acpi_device_fwnode_ops; 395 extern const struct fwnode_operations acpi_data_fwnode_ops; 396 extern const struct fwnode_operations acpi_static_fwnode_ops; 397 398 bool is_acpi_device_node(const struct fwnode_handle *fwnode); 399 bool is_acpi_data_node(const struct fwnode_handle *fwnode); 400 401 static inline bool is_acpi_node(const struct fwnode_handle *fwnode) 402 { 403 return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode)); 404 } 405 406 #define to_acpi_device_node(__fwnode) \ 407 ({ \ 408 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \ 409 \ 410 is_acpi_device_node(__to_acpi_device_node_fwnode) ? \ 411 container_of(__to_acpi_device_node_fwnode, \ 412 struct acpi_device, fwnode) : \ 413 NULL; \ 414 }) 415 416 #define to_acpi_data_node(__fwnode) \ 417 ({ \ 418 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \ 419 \ 420 is_acpi_data_node(__to_acpi_data_node_fwnode) ? \ 421 container_of(__to_acpi_data_node_fwnode, \ 422 struct acpi_data_node, fwnode) : \ 423 NULL; \ 424 }) 425 426 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode) 427 { 428 return !IS_ERR_OR_NULL(fwnode) && 429 fwnode->ops == &acpi_static_fwnode_ops; 430 } 431 432 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode, 433 const char *name) 434 { 435 return is_acpi_data_node(fwnode) ? 436 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false; 437 } 438 439 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev) 440 { 441 return &adev->fwnode; 442 } 443 444 static inline void *acpi_driver_data(struct acpi_device *d) 445 { 446 return d->driver_data; 447 } 448 449 #define to_acpi_device(d) container_of(d, struct acpi_device, dev) 450 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) 451 452 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) 453 { 454 *((u32 *)&adev->status) = sta; 455 } 456 457 static inline void acpi_set_hp_context(struct acpi_device *adev, 458 struct acpi_hotplug_context *hp) 459 { 460 hp->self = adev; 461 adev->hp = hp; 462 } 463 464 void acpi_initialize_hp_context(struct acpi_device *adev, 465 struct acpi_hotplug_context *hp, 466 int (*notify)(struct acpi_device *, u32), 467 void (*uevent)(struct acpi_device *, u32)); 468 469 /* acpi_device.dev.bus == &acpi_bus_type */ 470 extern struct bus_type acpi_bus_type; 471 472 /* 473 * Events 474 * ------ 475 */ 476 477 struct acpi_bus_event { 478 struct list_head node; 479 acpi_device_class device_class; 480 acpi_bus_id bus_id; 481 u32 type; 482 u32 data; 483 }; 484 485 extern struct kobject *acpi_kobj; 486 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); 487 void acpi_bus_private_data_handler(acpi_handle, void *); 488 int acpi_bus_get_private_data(acpi_handle, void **); 489 int acpi_bus_attach_private_data(acpi_handle, void *); 490 void acpi_bus_detach_private_data(acpi_handle); 491 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); 492 extern int register_acpi_notifier(struct notifier_block *); 493 extern int unregister_acpi_notifier(struct notifier_block *); 494 495 /* 496 * External Functions 497 */ 498 499 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device); 500 struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle); 501 void acpi_bus_put_acpi_device(struct acpi_device *adev); 502 acpi_status acpi_bus_get_status_handle(acpi_handle handle, 503 unsigned long long *sta); 504 int acpi_bus_get_status(struct acpi_device *device); 505 506 int acpi_bus_set_power(acpi_handle handle, int state); 507 const char *acpi_power_state_string(int state); 508 int acpi_device_set_power(struct acpi_device *device, int state); 509 int acpi_bus_init_power(struct acpi_device *device); 510 int acpi_device_fix_up_power(struct acpi_device *device); 511 int acpi_bus_update_power(acpi_handle handle, int *state_p); 512 int acpi_device_update_power(struct acpi_device *device, int *state_p); 513 bool acpi_bus_power_manageable(acpi_handle handle); 514 int acpi_device_power_add_dependent(struct acpi_device *adev, 515 struct device *dev); 516 void acpi_device_power_remove_dependent(struct acpi_device *adev, 517 struct device *dev); 518 519 #ifdef CONFIG_PM 520 bool acpi_bus_can_wakeup(acpi_handle handle); 521 #else 522 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } 523 #endif 524 525 void acpi_scan_lock_acquire(void); 526 void acpi_scan_lock_release(void); 527 void acpi_lock_hp_context(void); 528 void acpi_unlock_hp_context(void); 529 int acpi_scan_add_handler(struct acpi_scan_handler *handler); 530 int acpi_bus_register_driver(struct acpi_driver *driver); 531 void acpi_bus_unregister_driver(struct acpi_driver *driver); 532 int acpi_bus_scan(acpi_handle handle); 533 void acpi_bus_trim(struct acpi_device *start); 534 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); 535 int acpi_match_device_ids(struct acpi_device *device, 536 const struct acpi_device_id *ids); 537 void acpi_set_modalias(struct acpi_device *adev, const char *default_id, 538 char *modalias, size_t len); 539 int acpi_create_dir(struct acpi_device *); 540 void acpi_remove_dir(struct acpi_device *); 541 542 static inline bool acpi_device_enumerated(struct acpi_device *adev) 543 { 544 return adev && adev->flags.initialized && adev->flags.visited; 545 } 546 547 /** 548 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver 549 * @__acpi_driver: acpi_driver struct 550 * 551 * Helper macro for ACPI drivers which do not do anything special in module 552 * init/exit. This eliminates a lot of boilerplate. Each module may only 553 * use this macro once, and calling it replaces module_init() and module_exit() 554 */ 555 #define module_acpi_driver(__acpi_driver) \ 556 module_driver(__acpi_driver, acpi_bus_register_driver, \ 557 acpi_bus_unregister_driver) 558 559 /* 560 * Bind physical devices with ACPI devices 561 */ 562 struct acpi_bus_type { 563 struct list_head list; 564 const char *name; 565 bool (*match)(struct device *dev); 566 struct acpi_device * (*find_companion)(struct device *); 567 void (*setup)(struct device *); 568 void (*cleanup)(struct device *); 569 }; 570 int register_acpi_bus_type(struct acpi_bus_type *); 571 int unregister_acpi_bus_type(struct acpi_bus_type *); 572 int acpi_bind_one(struct device *dev, struct acpi_device *adev); 573 int acpi_unbind_one(struct device *dev); 574 575 struct acpi_pci_root { 576 struct acpi_device * device; 577 struct pci_bus *bus; 578 u16 segment; 579 struct resource secondary; /* downstream bus range */ 580 581 u32 osc_support_set; /* _OSC state of support bits */ 582 u32 osc_control_set; /* _OSC state of control bits */ 583 phys_addr_t mcfg_addr; 584 }; 585 586 /* helper */ 587 588 bool acpi_dma_supported(struct acpi_device *adev); 589 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev); 590 int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset, 591 u64 *size); 592 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr, 593 const u32 *input_id); 594 static inline int acpi_dma_configure(struct device *dev, 595 enum dev_dma_attr attr) 596 { 597 return acpi_dma_configure_id(dev, attr, NULL); 598 } 599 struct acpi_device *acpi_find_child_device(struct acpi_device *parent, 600 u64 address, bool check_children); 601 int acpi_is_root_bridge(acpi_handle); 602 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); 603 604 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state); 605 int acpi_disable_wakeup_device_power(struct acpi_device *dev); 606 607 #ifdef CONFIG_X86 608 bool acpi_device_always_present(struct acpi_device *adev); 609 #else 610 static inline bool acpi_device_always_present(struct acpi_device *adev) 611 { 612 return false; 613 } 614 #endif 615 616 #ifdef CONFIG_PM 617 void acpi_pm_wakeup_event(struct device *dev); 618 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev, 619 void (*func)(struct acpi_device_wakeup_context *context)); 620 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev); 621 bool acpi_pm_device_can_wakeup(struct device *dev); 622 int acpi_pm_device_sleep_state(struct device *, int *, int); 623 int acpi_pm_set_device_wakeup(struct device *dev, bool enable); 624 #else 625 static inline void acpi_pm_wakeup_event(struct device *dev) 626 { 627 } 628 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev, 629 struct device *dev, 630 void (*func)(struct acpi_device_wakeup_context *context)) 631 { 632 return AE_SUPPORT; 633 } 634 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev) 635 { 636 return AE_SUPPORT; 637 } 638 static inline bool acpi_pm_device_can_wakeup(struct device *dev) 639 { 640 return false; 641 } 642 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m) 643 { 644 if (p) 645 *p = ACPI_STATE_D0; 646 647 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ? 648 m : ACPI_STATE_D0; 649 } 650 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable) 651 { 652 return -ENODEV; 653 } 654 #endif 655 656 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT 657 bool acpi_sleep_state_supported(u8 sleep_state); 658 #else 659 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; } 660 #endif 661 662 #ifdef CONFIG_ACPI_SLEEP 663 u32 acpi_target_system_state(void); 664 #else 665 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; } 666 #endif 667 668 static inline bool acpi_device_power_manageable(struct acpi_device *adev) 669 { 670 return adev->flags.power_manageable; 671 } 672 673 static inline bool acpi_device_can_wakeup(struct acpi_device *adev) 674 { 675 return adev->wakeup.flags.valid; 676 } 677 678 static inline bool acpi_device_can_poweroff(struct acpi_device *adev) 679 { 680 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid || 681 ((acpi_gbl_FADT.header.revision < 6) && 682 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set); 683 } 684 685 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2); 686 687 struct acpi_device * 688 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv); 689 struct acpi_device * 690 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv); 691 692 #define for_each_acpi_dev_match(adev, hid, uid, hrv) \ 693 for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \ 694 adev; \ 695 adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv)) 696 697 static inline void acpi_dev_put(struct acpi_device *adev) 698 { 699 put_device(&adev->dev); 700 } 701 #else /* CONFIG_ACPI */ 702 703 static inline int register_acpi_bus_type(void *bus) { return 0; } 704 static inline int unregister_acpi_bus_type(void *bus) { return 0; } 705 706 #endif /* CONFIG_ACPI */ 707 708 #endif /*__ACPI_BUS_H__*/ 709