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 bool acpi_reduced_hardware(void); 82 83 #ifdef CONFIG_ACPI 84 85 struct proc_dir_entry; 86 87 #define ACPI_BUS_FILE_ROOT "acpi" 88 extern struct proc_dir_entry *acpi_root_dir; 89 90 enum acpi_bus_device_type { 91 ACPI_BUS_TYPE_DEVICE = 0, 92 ACPI_BUS_TYPE_POWER, 93 ACPI_BUS_TYPE_PROCESSOR, 94 ACPI_BUS_TYPE_THERMAL, 95 ACPI_BUS_TYPE_POWER_BUTTON, 96 ACPI_BUS_TYPE_SLEEP_BUTTON, 97 ACPI_BUS_TYPE_ECDT_EC, 98 ACPI_BUS_DEVICE_TYPE_COUNT 99 }; 100 101 struct acpi_driver; 102 struct acpi_device; 103 104 /* 105 * ACPI Scan Handler 106 * ----------------- 107 */ 108 109 struct acpi_hotplug_profile { 110 struct kobject kobj; 111 int (*scan_dependent)(struct acpi_device *adev); 112 void (*notify_online)(struct acpi_device *adev); 113 bool enabled:1; 114 bool demand_offline:1; 115 }; 116 117 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile( 118 struct kobject *kobj) 119 { 120 return container_of(kobj, struct acpi_hotplug_profile, kobj); 121 } 122 123 struct acpi_scan_handler { 124 const struct acpi_device_id *ids; 125 struct list_head list_node; 126 bool (*match)(const char *idstr, const struct acpi_device_id **matchid); 127 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id); 128 void (*detach)(struct acpi_device *dev); 129 void (*bind)(struct device *phys_dev); 130 void (*unbind)(struct device *phys_dev); 131 struct acpi_hotplug_profile hotplug; 132 }; 133 134 /* 135 * ACPI Hotplug Context 136 * -------------------- 137 */ 138 139 struct acpi_hotplug_context { 140 struct acpi_device *self; 141 int (*notify)(struct acpi_device *, u32); 142 void (*uevent)(struct acpi_device *, u32); 143 void (*fixup)(struct acpi_device *); 144 }; 145 146 /* 147 * ACPI Driver 148 * ----------- 149 */ 150 151 typedef int (*acpi_op_add) (struct acpi_device * device); 152 typedef int (*acpi_op_remove) (struct acpi_device * device); 153 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event); 154 155 struct acpi_device_ops { 156 acpi_op_add add; 157 acpi_op_remove remove; 158 acpi_op_notify notify; 159 }; 160 161 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */ 162 163 struct acpi_driver { 164 char name[80]; 165 char class[80]; 166 const struct acpi_device_id *ids; /* Supported Hardware IDs */ 167 unsigned int flags; 168 struct acpi_device_ops ops; 169 struct device_driver drv; 170 struct module *owner; 171 }; 172 173 /* 174 * ACPI Device 175 * ----------- 176 */ 177 178 /* Status (_STA) */ 179 180 struct acpi_device_status { 181 u32 present:1; 182 u32 enabled:1; 183 u32 show_in_ui:1; 184 u32 functional:1; 185 u32 battery_present:1; 186 u32 reserved:27; 187 }; 188 189 /* Flags */ 190 191 struct acpi_device_flags { 192 u32 dynamic_status:1; 193 u32 removable:1; 194 u32 ejectable:1; 195 u32 power_manageable:1; 196 u32 match_driver:1; 197 u32 initialized:1; 198 u32 visited:1; 199 u32 hotplug_notify:1; 200 u32 is_dock_station:1; 201 u32 of_compatible_ok:1; 202 u32 coherent_dma:1; 203 u32 cca_seen:1; 204 u32 enumeration_by_parent:1; 205 u32 reserved:19; 206 }; 207 208 /* File System */ 209 210 struct acpi_device_dir { 211 struct proc_dir_entry *entry; 212 }; 213 214 #define acpi_device_dir(d) ((d)->dir.entry) 215 216 /* Plug and Play */ 217 218 typedef char acpi_bus_id[8]; 219 typedef u64 acpi_bus_address; 220 typedef char acpi_device_name[40]; 221 typedef char acpi_device_class[20]; 222 223 struct acpi_hardware_id { 224 struct list_head list; 225 const char *id; 226 }; 227 228 struct acpi_pnp_type { 229 u32 hardware_id:1; 230 u32 bus_address:1; 231 u32 platform_id:1; 232 u32 reserved:29; 233 }; 234 235 struct acpi_device_pnp { 236 acpi_bus_id bus_id; /* Object name */ 237 int instance_no; /* Instance number of this object */ 238 struct acpi_pnp_type type; /* ID type */ 239 acpi_bus_address bus_address; /* _ADR */ 240 char *unique_id; /* _UID */ 241 struct list_head ids; /* _HID and _CIDs */ 242 acpi_device_name device_name; /* Driver-determined */ 243 acpi_device_class device_class; /* " */ 244 union acpi_object *str_obj; /* unicode string for _STR method */ 245 }; 246 247 #define acpi_device_bid(d) ((d)->pnp.bus_id) 248 #define acpi_device_adr(d) ((d)->pnp.bus_address) 249 const char *acpi_device_hid(struct acpi_device *device); 250 #define acpi_device_uid(d) ((d)->pnp.unique_id) 251 #define acpi_device_name(d) ((d)->pnp.device_name) 252 #define acpi_device_class(d) ((d)->pnp.device_class) 253 254 /* Power Management */ 255 256 struct acpi_device_power_flags { 257 u32 explicit_get:1; /* _PSC present? */ 258 u32 power_resources:1; /* Power resources */ 259 u32 inrush_current:1; /* Serialize Dx->D0 */ 260 u32 power_removed:1; /* Optimize Dx->D0 */ 261 u32 ignore_parent:1; /* Power is independent of parent power state */ 262 u32 dsw_present:1; /* _DSW present? */ 263 u32 reserved:26; 264 }; 265 266 struct acpi_device_power_state { 267 struct { 268 u8 valid:1; 269 u8 explicit_set:1; /* _PSx present? */ 270 u8 reserved:6; 271 } flags; 272 int power; /* % Power (compared to D0) */ 273 int latency; /* Dx->D0 time (microseconds) */ 274 struct list_head resources; /* Power resources referenced */ 275 }; 276 277 struct acpi_device_power { 278 int state; /* Current state */ 279 struct acpi_device_power_flags flags; 280 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */ 281 }; 282 283 struct acpi_dep_data { 284 struct list_head node; 285 acpi_handle supplier; 286 acpi_handle consumer; 287 }; 288 289 /* Performance Management */ 290 291 struct acpi_device_perf_flags { 292 u8 reserved:8; 293 }; 294 295 struct acpi_device_perf_state { 296 struct { 297 u8 valid:1; 298 u8 reserved:7; 299 } flags; 300 u8 power; /* % Power (compared to P0) */ 301 u8 performance; /* % Performance ( " ) */ 302 int latency; /* Px->P0 time (microseconds) */ 303 }; 304 305 struct acpi_device_perf { 306 int state; 307 struct acpi_device_perf_flags flags; 308 int state_count; 309 struct acpi_device_perf_state *states; 310 }; 311 312 /* Wakeup Management */ 313 struct acpi_device_wakeup_flags { 314 u8 valid:1; /* Can successfully enable wakeup? */ 315 u8 notifier_present:1; /* Wake-up notify handler has been installed */ 316 }; 317 318 struct acpi_device_wakeup_context { 319 void (*func)(struct acpi_device_wakeup_context *context); 320 struct device *dev; 321 }; 322 323 struct acpi_device_wakeup { 324 acpi_handle gpe_device; 325 u64 gpe_number; 326 u64 sleep_state; 327 struct list_head resources; 328 struct acpi_device_wakeup_flags flags; 329 struct acpi_device_wakeup_context context; 330 struct wakeup_source *ws; 331 int prepare_count; 332 int enable_count; 333 }; 334 335 struct acpi_device_physical_node { 336 unsigned int node_id; 337 struct list_head node; 338 struct device *dev; 339 bool put_online:1; 340 }; 341 342 struct acpi_device_properties { 343 const guid_t *guid; 344 const union acpi_object *properties; 345 struct list_head list; 346 }; 347 348 /* ACPI Device Specific Data (_DSD) */ 349 struct acpi_device_data { 350 const union acpi_object *pointer; 351 struct list_head properties; 352 const union acpi_object *of_compatible; 353 struct list_head subnodes; 354 }; 355 356 struct acpi_gpio_mapping; 357 358 /* Device */ 359 struct acpi_device { 360 int device_type; 361 acpi_handle handle; /* no handle for fixed hardware */ 362 struct fwnode_handle fwnode; 363 struct acpi_device *parent; 364 struct list_head children; 365 struct list_head node; 366 struct list_head wakeup_list; 367 struct list_head del_list; 368 struct acpi_device_status status; 369 struct acpi_device_flags flags; 370 struct acpi_device_pnp pnp; 371 struct acpi_device_power power; 372 struct acpi_device_wakeup wakeup; 373 struct acpi_device_perf performance; 374 struct acpi_device_dir dir; 375 struct acpi_device_data data; 376 struct acpi_scan_handler *handler; 377 struct acpi_hotplug_context *hp; 378 struct acpi_driver *driver; 379 const struct acpi_gpio_mapping *driver_gpios; 380 void *driver_data; 381 struct device dev; 382 unsigned int physical_node_count; 383 unsigned int dep_unmet; 384 struct list_head physical_node_list; 385 struct mutex physical_node_lock; 386 void (*remove)(struct acpi_device *); 387 }; 388 389 /* Non-device subnode */ 390 struct acpi_data_node { 391 const char *name; 392 acpi_handle handle; 393 struct fwnode_handle fwnode; 394 struct fwnode_handle *parent; 395 struct acpi_device_data data; 396 struct list_head sibling; 397 struct kobject kobj; 398 struct completion kobj_done; 399 }; 400 401 extern const struct fwnode_operations acpi_device_fwnode_ops; 402 extern const struct fwnode_operations acpi_data_fwnode_ops; 403 extern const struct fwnode_operations acpi_static_fwnode_ops; 404 405 bool is_acpi_device_node(const struct fwnode_handle *fwnode); 406 bool is_acpi_data_node(const struct fwnode_handle *fwnode); 407 408 static inline bool is_acpi_node(const struct fwnode_handle *fwnode) 409 { 410 return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode)); 411 } 412 413 #define to_acpi_device_node(__fwnode) \ 414 ({ \ 415 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \ 416 \ 417 is_acpi_device_node(__to_acpi_device_node_fwnode) ? \ 418 container_of(__to_acpi_device_node_fwnode, \ 419 struct acpi_device, fwnode) : \ 420 NULL; \ 421 }) 422 423 #define to_acpi_data_node(__fwnode) \ 424 ({ \ 425 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \ 426 \ 427 is_acpi_data_node(__to_acpi_data_node_fwnode) ? \ 428 container_of(__to_acpi_data_node_fwnode, \ 429 struct acpi_data_node, fwnode) : \ 430 NULL; \ 431 }) 432 433 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode) 434 { 435 return !IS_ERR_OR_NULL(fwnode) && 436 fwnode->ops == &acpi_static_fwnode_ops; 437 } 438 439 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode, 440 const char *name) 441 { 442 return is_acpi_data_node(fwnode) ? 443 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false; 444 } 445 446 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev) 447 { 448 return &adev->fwnode; 449 } 450 451 static inline void *acpi_driver_data(struct acpi_device *d) 452 { 453 return d->driver_data; 454 } 455 456 #define to_acpi_device(d) container_of(d, struct acpi_device, dev) 457 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) 458 459 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) 460 { 461 *((u32 *)&adev->status) = sta; 462 } 463 464 static inline void acpi_set_hp_context(struct acpi_device *adev, 465 struct acpi_hotplug_context *hp) 466 { 467 hp->self = adev; 468 adev->hp = hp; 469 } 470 471 void acpi_initialize_hp_context(struct acpi_device *adev, 472 struct acpi_hotplug_context *hp, 473 int (*notify)(struct acpi_device *, u32), 474 void (*uevent)(struct acpi_device *, u32)); 475 476 /* acpi_device.dev.bus == &acpi_bus_type */ 477 extern struct bus_type acpi_bus_type; 478 479 /* 480 * Events 481 * ------ 482 */ 483 484 struct acpi_bus_event { 485 struct list_head node; 486 acpi_device_class device_class; 487 acpi_bus_id bus_id; 488 u32 type; 489 u32 data; 490 }; 491 492 extern struct kobject *acpi_kobj; 493 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); 494 void acpi_bus_private_data_handler(acpi_handle, void *); 495 int acpi_bus_get_private_data(acpi_handle, void **); 496 int acpi_bus_attach_private_data(acpi_handle, void *); 497 void acpi_bus_detach_private_data(acpi_handle); 498 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); 499 extern int register_acpi_notifier(struct notifier_block *); 500 extern int unregister_acpi_notifier(struct notifier_block *); 501 502 /* 503 * External Functions 504 */ 505 506 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device); 507 acpi_status acpi_bus_get_status_handle(acpi_handle handle, 508 unsigned long long *sta); 509 int acpi_bus_get_status(struct acpi_device *device); 510 511 int acpi_bus_set_power(acpi_handle handle, int state); 512 const char *acpi_power_state_string(int state); 513 int acpi_device_set_power(struct acpi_device *device, int state); 514 int acpi_bus_init_power(struct acpi_device *device); 515 int acpi_device_fix_up_power(struct acpi_device *device); 516 int acpi_bus_update_power(acpi_handle handle, int *state_p); 517 int acpi_device_update_power(struct acpi_device *device, int *state_p); 518 bool acpi_bus_power_manageable(acpi_handle handle); 519 int acpi_device_power_add_dependent(struct acpi_device *adev, 520 struct device *dev); 521 void acpi_device_power_remove_dependent(struct acpi_device *adev, 522 struct device *dev); 523 524 #ifdef CONFIG_PM 525 bool acpi_bus_can_wakeup(acpi_handle handle); 526 #else 527 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } 528 #endif 529 530 void acpi_scan_lock_acquire(void); 531 void acpi_scan_lock_release(void); 532 void acpi_lock_hp_context(void); 533 void acpi_unlock_hp_context(void); 534 int acpi_scan_add_handler(struct acpi_scan_handler *handler); 535 int acpi_bus_register_driver(struct acpi_driver *driver); 536 void acpi_bus_unregister_driver(struct acpi_driver *driver); 537 int acpi_bus_scan(acpi_handle handle); 538 void acpi_bus_trim(struct acpi_device *start); 539 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); 540 int acpi_match_device_ids(struct acpi_device *device, 541 const struct acpi_device_id *ids); 542 void acpi_set_modalias(struct acpi_device *adev, const char *default_id, 543 char *modalias, size_t len); 544 int acpi_create_dir(struct acpi_device *); 545 void acpi_remove_dir(struct acpi_device *); 546 547 static inline bool acpi_device_enumerated(struct acpi_device *adev) 548 { 549 return adev && adev->flags.initialized && adev->flags.visited; 550 } 551 552 /** 553 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver 554 * @__acpi_driver: acpi_driver struct 555 * 556 * Helper macro for ACPI drivers which do not do anything special in module 557 * init/exit. This eliminates a lot of boilerplate. Each module may only 558 * use this macro once, and calling it replaces module_init() and module_exit() 559 */ 560 #define module_acpi_driver(__acpi_driver) \ 561 module_driver(__acpi_driver, acpi_bus_register_driver, \ 562 acpi_bus_unregister_driver) 563 564 /* 565 * Bind physical devices with ACPI devices 566 */ 567 struct acpi_bus_type { 568 struct list_head list; 569 const char *name; 570 bool (*match)(struct device *dev); 571 struct acpi_device * (*find_companion)(struct device *); 572 void (*setup)(struct device *); 573 void (*cleanup)(struct device *); 574 }; 575 int register_acpi_bus_type(struct acpi_bus_type *); 576 int unregister_acpi_bus_type(struct acpi_bus_type *); 577 int acpi_bind_one(struct device *dev, struct acpi_device *adev); 578 int acpi_unbind_one(struct device *dev); 579 580 struct acpi_pci_root { 581 struct acpi_device * device; 582 struct pci_bus *bus; 583 u16 segment; 584 struct resource secondary; /* downstream bus range */ 585 586 u32 osc_support_set; /* _OSC state of support bits */ 587 u32 osc_control_set; /* _OSC state of control bits */ 588 phys_addr_t mcfg_addr; 589 }; 590 591 /* helper */ 592 593 bool acpi_dma_supported(const struct acpi_device *adev); 594 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev); 595 int acpi_iommu_fwspec_init(struct device *dev, u32 id, 596 struct fwnode_handle *fwnode, 597 const struct iommu_ops *ops); 598 int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset, 599 u64 *size); 600 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr, 601 const u32 *input_id); 602 static inline int acpi_dma_configure(struct device *dev, 603 enum dev_dma_attr attr) 604 { 605 return acpi_dma_configure_id(dev, attr, NULL); 606 } 607 struct acpi_device *acpi_find_child_device(struct acpi_device *parent, 608 u64 address, bool check_children); 609 int acpi_is_root_bridge(acpi_handle); 610 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); 611 612 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state); 613 int acpi_disable_wakeup_device_power(struct acpi_device *dev); 614 615 #ifdef CONFIG_X86 616 bool acpi_device_always_present(struct acpi_device *adev); 617 #else 618 static inline bool acpi_device_always_present(struct acpi_device *adev) 619 { 620 return false; 621 } 622 #endif 623 624 #ifdef CONFIG_PM 625 void acpi_pm_wakeup_event(struct device *dev); 626 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev, 627 void (*func)(struct acpi_device_wakeup_context *context)); 628 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev); 629 bool acpi_pm_device_can_wakeup(struct device *dev); 630 int acpi_pm_device_sleep_state(struct device *, int *, int); 631 int acpi_pm_set_device_wakeup(struct device *dev, bool enable); 632 #else 633 static inline void acpi_pm_wakeup_event(struct device *dev) 634 { 635 } 636 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev, 637 struct device *dev, 638 void (*func)(struct acpi_device_wakeup_context *context)) 639 { 640 return AE_SUPPORT; 641 } 642 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev) 643 { 644 return AE_SUPPORT; 645 } 646 static inline bool acpi_pm_device_can_wakeup(struct device *dev) 647 { 648 return false; 649 } 650 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m) 651 { 652 if (p) 653 *p = ACPI_STATE_D0; 654 655 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ? 656 m : ACPI_STATE_D0; 657 } 658 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable) 659 { 660 return -ENODEV; 661 } 662 #endif 663 664 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT 665 bool acpi_sleep_state_supported(u8 sleep_state); 666 #else 667 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; } 668 #endif 669 670 #ifdef CONFIG_ACPI_SLEEP 671 u32 acpi_target_system_state(void); 672 #else 673 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; } 674 #endif 675 676 static inline bool acpi_device_power_manageable(struct acpi_device *adev) 677 { 678 return adev->flags.power_manageable; 679 } 680 681 static inline bool acpi_device_can_wakeup(struct acpi_device *adev) 682 { 683 return adev->wakeup.flags.valid; 684 } 685 686 static inline bool acpi_device_can_poweroff(struct acpi_device *adev) 687 { 688 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid || 689 ((acpi_gbl_FADT.header.revision < 6) && 690 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set); 691 } 692 693 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2); 694 695 void acpi_dev_clear_dependencies(struct acpi_device *supplier); 696 struct acpi_device *acpi_dev_get_first_consumer_dev(struct acpi_device *supplier); 697 struct acpi_device * 698 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv); 699 struct acpi_device * 700 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv); 701 702 /** 703 * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria 704 * @adev: pointer to the matching ACPI device, NULL at the end of the loop 705 * @hid: Hardware ID of the device. 706 * @uid: Unique ID of the device, pass NULL to not check _UID 707 * @hrv: Hardware Revision of the device, pass -1 to not check _HRV 708 * 709 * The caller is responsible for invoking acpi_dev_put() on the returned device. 710 */ 711 #define for_each_acpi_dev_match(adev, hid, uid, hrv) \ 712 for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \ 713 adev; \ 714 adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv)) 715 716 static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev) 717 { 718 return adev ? to_acpi_device(get_device(&adev->dev)) : NULL; 719 } 720 721 static inline void acpi_dev_put(struct acpi_device *adev) 722 { 723 if (adev) 724 put_device(&adev->dev); 725 } 726 727 struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle); 728 729 static inline void acpi_bus_put_acpi_device(struct acpi_device *adev) 730 { 731 acpi_dev_put(adev); 732 } 733 #else /* CONFIG_ACPI */ 734 735 static inline int register_acpi_bus_type(void *bus) { return 0; } 736 static inline int unregister_acpi_bus_type(void *bus) { return 0; } 737 738 #endif /* CONFIG_ACPI */ 739 740 #endif /*__ACPI_BUS_H__*/ 741