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 struct acpi_pnp_type type; /* ID type */ 237 acpi_bus_address bus_address; /* _ADR */ 238 char *unique_id; /* _UID */ 239 struct list_head ids; /* _HID and _CIDs */ 240 acpi_device_name device_name; /* Driver-determined */ 241 acpi_device_class device_class; /* " */ 242 union acpi_object *str_obj; /* unicode string for _STR method */ 243 }; 244 245 #define acpi_device_bid(d) ((d)->pnp.bus_id) 246 #define acpi_device_adr(d) ((d)->pnp.bus_address) 247 const char *acpi_device_hid(struct acpi_device *device); 248 #define acpi_device_uid(d) ((d)->pnp.unique_id) 249 #define acpi_device_name(d) ((d)->pnp.device_name) 250 #define acpi_device_class(d) ((d)->pnp.device_class) 251 252 /* Power Management */ 253 254 struct acpi_device_power_flags { 255 u32 explicit_get:1; /* _PSC present? */ 256 u32 power_resources:1; /* Power resources */ 257 u32 inrush_current:1; /* Serialize Dx->D0 */ 258 u32 power_removed:1; /* Optimize Dx->D0 */ 259 u32 ignore_parent:1; /* Power is independent of parent power state */ 260 u32 dsw_present:1; /* _DSW present? */ 261 u32 reserved:26; 262 }; 263 264 struct acpi_device_power_state { 265 struct { 266 u8 valid:1; 267 u8 explicit_set:1; /* _PSx present? */ 268 u8 reserved:6; 269 } flags; 270 int power; /* % Power (compared to D0) */ 271 int latency; /* Dx->D0 time (microseconds) */ 272 struct list_head resources; /* Power resources referenced */ 273 }; 274 275 struct acpi_device_power { 276 int state; /* Current state */ 277 struct acpi_device_power_flags flags; 278 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */ 279 }; 280 281 /* Performance Management */ 282 283 struct acpi_device_perf_flags { 284 u8 reserved:8; 285 }; 286 287 struct acpi_device_perf_state { 288 struct { 289 u8 valid:1; 290 u8 reserved:7; 291 } flags; 292 u8 power; /* % Power (compared to P0) */ 293 u8 performance; /* % Performance ( " ) */ 294 int latency; /* Px->P0 time (microseconds) */ 295 }; 296 297 struct acpi_device_perf { 298 int state; 299 struct acpi_device_perf_flags flags; 300 int state_count; 301 struct acpi_device_perf_state *states; 302 }; 303 304 /* Wakeup Management */ 305 struct acpi_device_wakeup_flags { 306 u8 valid:1; /* Can successfully enable wakeup? */ 307 u8 notifier_present:1; /* Wake-up notify handler has been installed */ 308 }; 309 310 struct acpi_device_wakeup_context { 311 void (*func)(struct acpi_device_wakeup_context *context); 312 struct device *dev; 313 }; 314 315 struct acpi_device_wakeup { 316 acpi_handle gpe_device; 317 u64 gpe_number; 318 u64 sleep_state; 319 struct list_head resources; 320 struct acpi_device_wakeup_flags flags; 321 struct acpi_device_wakeup_context context; 322 struct wakeup_source *ws; 323 int prepare_count; 324 int enable_count; 325 }; 326 327 struct acpi_device_physical_node { 328 unsigned int node_id; 329 struct list_head node; 330 struct device *dev; 331 bool put_online:1; 332 }; 333 334 struct acpi_device_properties { 335 const guid_t *guid; 336 const union acpi_object *properties; 337 struct list_head list; 338 }; 339 340 /* ACPI Device Specific Data (_DSD) */ 341 struct acpi_device_data { 342 const union acpi_object *pointer; 343 struct list_head properties; 344 const union acpi_object *of_compatible; 345 struct list_head subnodes; 346 }; 347 348 struct acpi_gpio_mapping; 349 350 /* Device */ 351 struct acpi_device { 352 int device_type; 353 acpi_handle handle; /* no handle for fixed hardware */ 354 struct fwnode_handle fwnode; 355 struct acpi_device *parent; 356 struct list_head children; 357 struct list_head node; 358 struct list_head wakeup_list; 359 struct list_head del_list; 360 struct acpi_device_status status; 361 struct acpi_device_flags flags; 362 struct acpi_device_pnp pnp; 363 struct acpi_device_power power; 364 struct acpi_device_wakeup wakeup; 365 struct acpi_device_perf performance; 366 struct acpi_device_dir dir; 367 struct acpi_device_data data; 368 struct acpi_scan_handler *handler; 369 struct acpi_hotplug_context *hp; 370 struct acpi_driver *driver; 371 const struct acpi_gpio_mapping *driver_gpios; 372 void *driver_data; 373 struct device dev; 374 unsigned int physical_node_count; 375 unsigned int dep_unmet; 376 struct list_head physical_node_list; 377 struct mutex physical_node_lock; 378 void (*remove)(struct acpi_device *); 379 }; 380 381 /* Non-device subnode */ 382 struct acpi_data_node { 383 const char *name; 384 acpi_handle handle; 385 struct fwnode_handle fwnode; 386 struct fwnode_handle *parent; 387 struct acpi_device_data data; 388 struct list_head sibling; 389 struct kobject kobj; 390 struct completion kobj_done; 391 }; 392 393 extern const struct fwnode_operations acpi_device_fwnode_ops; 394 extern const struct fwnode_operations acpi_data_fwnode_ops; 395 extern const struct fwnode_operations acpi_static_fwnode_ops; 396 397 bool is_acpi_device_node(const struct fwnode_handle *fwnode); 398 bool is_acpi_data_node(const struct fwnode_handle *fwnode); 399 400 static inline bool is_acpi_node(const struct fwnode_handle *fwnode) 401 { 402 return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode)); 403 } 404 405 #define to_acpi_device_node(__fwnode) \ 406 ({ \ 407 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \ 408 \ 409 is_acpi_device_node(__to_acpi_device_node_fwnode) ? \ 410 container_of(__to_acpi_device_node_fwnode, \ 411 struct acpi_device, fwnode) : \ 412 NULL; \ 413 }) 414 415 #define to_acpi_data_node(__fwnode) \ 416 ({ \ 417 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \ 418 \ 419 is_acpi_data_node(__to_acpi_data_node_fwnode) ? \ 420 container_of(__to_acpi_data_node_fwnode, \ 421 struct acpi_data_node, fwnode) : \ 422 NULL; \ 423 }) 424 425 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode) 426 { 427 return !IS_ERR_OR_NULL(fwnode) && 428 fwnode->ops == &acpi_static_fwnode_ops; 429 } 430 431 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode, 432 const char *name) 433 { 434 return is_acpi_data_node(fwnode) ? 435 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false; 436 } 437 438 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev) 439 { 440 return &adev->fwnode; 441 } 442 443 static inline void *acpi_driver_data(struct acpi_device *d) 444 { 445 return d->driver_data; 446 } 447 448 #define to_acpi_device(d) container_of(d, struct acpi_device, dev) 449 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) 450 451 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) 452 { 453 *((u32 *)&adev->status) = sta; 454 } 455 456 static inline void acpi_set_hp_context(struct acpi_device *adev, 457 struct acpi_hotplug_context *hp) 458 { 459 hp->self = adev; 460 adev->hp = hp; 461 } 462 463 void acpi_initialize_hp_context(struct acpi_device *adev, 464 struct acpi_hotplug_context *hp, 465 int (*notify)(struct acpi_device *, u32), 466 void (*uevent)(struct acpi_device *, u32)); 467 468 /* acpi_device.dev.bus == &acpi_bus_type */ 469 extern struct bus_type acpi_bus_type; 470 471 /* 472 * Events 473 * ------ 474 */ 475 476 struct acpi_bus_event { 477 struct list_head node; 478 acpi_device_class device_class; 479 acpi_bus_id bus_id; 480 u32 type; 481 u32 data; 482 }; 483 484 extern struct kobject *acpi_kobj; 485 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); 486 void acpi_bus_private_data_handler(acpi_handle, void *); 487 int acpi_bus_get_private_data(acpi_handle, void **); 488 int acpi_bus_attach_private_data(acpi_handle, void *); 489 void acpi_bus_detach_private_data(acpi_handle); 490 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); 491 extern int register_acpi_notifier(struct notifier_block *); 492 extern int unregister_acpi_notifier(struct notifier_block *); 493 494 /* 495 * External Functions 496 */ 497 498 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device); 499 struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle); 500 void acpi_bus_put_acpi_device(struct acpi_device *adev); 501 acpi_status acpi_bus_get_status_handle(acpi_handle handle, 502 unsigned long long *sta); 503 int acpi_bus_get_status(struct acpi_device *device); 504 505 int acpi_bus_set_power(acpi_handle handle, int state); 506 const char *acpi_power_state_string(int state); 507 int acpi_device_set_power(struct acpi_device *device, int state); 508 int acpi_bus_init_power(struct acpi_device *device); 509 int acpi_device_fix_up_power(struct acpi_device *device); 510 int acpi_bus_update_power(acpi_handle handle, int *state_p); 511 int acpi_device_update_power(struct acpi_device *device, int *state_p); 512 bool acpi_bus_power_manageable(acpi_handle handle); 513 int acpi_device_power_add_dependent(struct acpi_device *adev, 514 struct device *dev); 515 void acpi_device_power_remove_dependent(struct acpi_device *adev, 516 struct device *dev); 517 518 #ifdef CONFIG_PM 519 bool acpi_bus_can_wakeup(acpi_handle handle); 520 #else 521 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } 522 #endif 523 524 void acpi_scan_lock_acquire(void); 525 void acpi_scan_lock_release(void); 526 void acpi_lock_hp_context(void); 527 void acpi_unlock_hp_context(void); 528 int acpi_scan_add_handler(struct acpi_scan_handler *handler); 529 int acpi_bus_register_driver(struct acpi_driver *driver); 530 void acpi_bus_unregister_driver(struct acpi_driver *driver); 531 int acpi_bus_scan(acpi_handle handle); 532 void acpi_bus_trim(struct acpi_device *start); 533 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); 534 int acpi_match_device_ids(struct acpi_device *device, 535 const struct acpi_device_id *ids); 536 void acpi_set_modalias(struct acpi_device *adev, const char *default_id, 537 char *modalias, size_t len); 538 int acpi_create_dir(struct acpi_device *); 539 void acpi_remove_dir(struct acpi_device *); 540 541 static inline bool acpi_device_enumerated(struct acpi_device *adev) 542 { 543 return adev && adev->flags.initialized && adev->flags.visited; 544 } 545 546 /** 547 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver 548 * @__acpi_driver: acpi_driver struct 549 * 550 * Helper macro for ACPI drivers which do not do anything special in module 551 * init/exit. This eliminates a lot of boilerplate. Each module may only 552 * use this macro once, and calling it replaces module_init() and module_exit() 553 */ 554 #define module_acpi_driver(__acpi_driver) \ 555 module_driver(__acpi_driver, acpi_bus_register_driver, \ 556 acpi_bus_unregister_driver) 557 558 /* 559 * Bind physical devices with ACPI devices 560 */ 561 struct acpi_bus_type { 562 struct list_head list; 563 const char *name; 564 bool (*match)(struct device *dev); 565 struct acpi_device * (*find_companion)(struct device *); 566 void (*setup)(struct device *); 567 void (*cleanup)(struct device *); 568 }; 569 int register_acpi_bus_type(struct acpi_bus_type *); 570 int unregister_acpi_bus_type(struct acpi_bus_type *); 571 int acpi_bind_one(struct device *dev, struct acpi_device *adev); 572 int acpi_unbind_one(struct device *dev); 573 574 struct acpi_pci_root { 575 struct acpi_device * device; 576 struct pci_bus *bus; 577 u16 segment; 578 struct resource secondary; /* downstream bus range */ 579 580 u32 osc_support_set; /* _OSC state of support bits */ 581 u32 osc_control_set; /* _OSC state of control bits */ 582 phys_addr_t mcfg_addr; 583 }; 584 585 /* helper */ 586 587 bool acpi_dma_supported(struct acpi_device *adev); 588 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev); 589 int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset, 590 u64 *size); 591 int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr); 592 593 struct acpi_device *acpi_find_child_device(struct acpi_device *parent, 594 u64 address, bool check_children); 595 int acpi_is_root_bridge(acpi_handle); 596 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); 597 598 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state); 599 int acpi_disable_wakeup_device_power(struct acpi_device *dev); 600 601 #ifdef CONFIG_X86 602 bool acpi_device_always_present(struct acpi_device *adev); 603 #else 604 static inline bool acpi_device_always_present(struct acpi_device *adev) 605 { 606 return false; 607 } 608 #endif 609 610 #ifdef CONFIG_PM 611 void acpi_pm_wakeup_event(struct device *dev); 612 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev, 613 void (*func)(struct acpi_device_wakeup_context *context)); 614 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev); 615 bool acpi_pm_device_can_wakeup(struct device *dev); 616 int acpi_pm_device_sleep_state(struct device *, int *, int); 617 int acpi_pm_set_device_wakeup(struct device *dev, bool enable); 618 int acpi_pm_set_bridge_wakeup(struct device *dev, bool enable); 619 #else 620 static inline void acpi_pm_wakeup_event(struct device *dev) 621 { 622 } 623 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev, 624 struct device *dev, 625 void (*func)(struct acpi_device_wakeup_context *context)) 626 { 627 return AE_SUPPORT; 628 } 629 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev) 630 { 631 return AE_SUPPORT; 632 } 633 static inline bool acpi_pm_device_can_wakeup(struct device *dev) 634 { 635 return false; 636 } 637 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m) 638 { 639 if (p) 640 *p = ACPI_STATE_D0; 641 642 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ? 643 m : ACPI_STATE_D0; 644 } 645 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable) 646 { 647 return -ENODEV; 648 } 649 static inline int acpi_pm_set_bridge_wakeup(struct device *dev, bool enable) 650 { 651 return -ENODEV; 652 } 653 #endif 654 655 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT 656 bool acpi_sleep_state_supported(u8 sleep_state); 657 #else 658 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; } 659 #endif 660 661 #ifdef CONFIG_ACPI_SLEEP 662 u32 acpi_target_system_state(void); 663 #else 664 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; } 665 #endif 666 667 static inline bool acpi_device_power_manageable(struct acpi_device *adev) 668 { 669 return adev->flags.power_manageable; 670 } 671 672 static inline bool acpi_device_can_wakeup(struct acpi_device *adev) 673 { 674 return adev->wakeup.flags.valid; 675 } 676 677 static inline bool acpi_device_can_poweroff(struct acpi_device *adev) 678 { 679 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid || 680 ((acpi_gbl_FADT.header.revision < 6) && 681 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set); 682 } 683 684 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2); 685 686 struct acpi_device * 687 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv); 688 689 static inline void acpi_dev_put(struct acpi_device *adev) 690 { 691 put_device(&adev->dev); 692 } 693 #else /* CONFIG_ACPI */ 694 695 static inline int register_acpi_bus_type(void *bus) { return 0; } 696 static inline int unregister_acpi_bus_type(void *bus) { return 0; } 697 698 #endif /* CONFIG_ACPI */ 699 700 #endif /*__ACPI_BUS_H__*/ 701