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 honor_deps:1; 206 u32 reserved:18; 207 }; 208 209 /* File System */ 210 211 struct acpi_device_dir { 212 struct proc_dir_entry *entry; 213 }; 214 215 #define acpi_device_dir(d) ((d)->dir.entry) 216 217 /* Plug and Play */ 218 219 typedef char acpi_bus_id[8]; 220 typedef u64 acpi_bus_address; 221 typedef char acpi_device_name[40]; 222 typedef char acpi_device_class[20]; 223 224 struct acpi_hardware_id { 225 struct list_head list; 226 const char *id; 227 }; 228 229 struct acpi_pnp_type { 230 u32 hardware_id:1; 231 u32 bus_address:1; 232 u32 platform_id:1; 233 u32 reserved:29; 234 }; 235 236 struct acpi_device_pnp { 237 acpi_bus_id bus_id; /* Object name */ 238 int instance_no; /* Instance number of this object */ 239 struct acpi_pnp_type type; /* ID type */ 240 acpi_bus_address bus_address; /* _ADR */ 241 char *unique_id; /* _UID */ 242 struct list_head ids; /* _HID and _CIDs */ 243 acpi_device_name device_name; /* Driver-determined */ 244 acpi_device_class device_class; /* " */ 245 union acpi_object *str_obj; /* unicode string for _STR method */ 246 }; 247 248 #define acpi_device_bid(d) ((d)->pnp.bus_id) 249 #define acpi_device_adr(d) ((d)->pnp.bus_address) 250 const char *acpi_device_hid(struct acpi_device *device); 251 #define acpi_device_uid(d) ((d)->pnp.unique_id) 252 #define acpi_device_name(d) ((d)->pnp.device_name) 253 #define acpi_device_class(d) ((d)->pnp.device_class) 254 255 /* Power Management */ 256 257 struct acpi_device_power_flags { 258 u32 explicit_get:1; /* _PSC present? */ 259 u32 power_resources:1; /* Power resources */ 260 u32 inrush_current:1; /* Serialize Dx->D0 */ 261 u32 power_removed:1; /* Optimize Dx->D0 */ 262 u32 ignore_parent:1; /* Power is independent of parent power state */ 263 u32 dsw_present:1; /* _DSW present? */ 264 u32 reserved:26; 265 }; 266 267 struct acpi_device_power_state { 268 struct { 269 u8 valid:1; 270 u8 explicit_set:1; /* _PSx present? */ 271 u8 reserved:6; 272 } flags; 273 int power; /* % Power (compared to D0) */ 274 int latency; /* Dx->D0 time (microseconds) */ 275 struct list_head resources; /* Power resources referenced */ 276 }; 277 278 struct acpi_device_power { 279 int state; /* Current state */ 280 struct acpi_device_power_flags flags; 281 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */ 282 u8 state_for_enumeration; /* Deepest power state for enumeration */ 283 }; 284 285 struct acpi_dep_data { 286 struct list_head node; 287 acpi_handle supplier; 288 acpi_handle consumer; 289 bool honor_dep; 290 }; 291 292 /* Performance Management */ 293 294 struct acpi_device_perf_flags { 295 u8 reserved:8; 296 }; 297 298 struct acpi_device_perf_state { 299 struct { 300 u8 valid:1; 301 u8 reserved:7; 302 } flags; 303 u8 power; /* % Power (compared to P0) */ 304 u8 performance; /* % Performance ( " ) */ 305 int latency; /* Px->P0 time (microseconds) */ 306 }; 307 308 struct acpi_device_perf { 309 int state; 310 struct acpi_device_perf_flags flags; 311 int state_count; 312 struct acpi_device_perf_state *states; 313 }; 314 315 /* Wakeup Management */ 316 struct acpi_device_wakeup_flags { 317 u8 valid:1; /* Can successfully enable wakeup? */ 318 u8 notifier_present:1; /* Wake-up notify handler has been installed */ 319 }; 320 321 struct acpi_device_wakeup_context { 322 void (*func)(struct acpi_device_wakeup_context *context); 323 struct device *dev; 324 }; 325 326 struct acpi_device_wakeup { 327 acpi_handle gpe_device; 328 u64 gpe_number; 329 u64 sleep_state; 330 struct list_head resources; 331 struct acpi_device_wakeup_flags flags; 332 struct acpi_device_wakeup_context context; 333 struct wakeup_source *ws; 334 int prepare_count; 335 int enable_count; 336 }; 337 338 struct acpi_device_physical_node { 339 unsigned int node_id; 340 struct list_head node; 341 struct device *dev; 342 bool put_online:1; 343 }; 344 345 struct acpi_device_properties { 346 const guid_t *guid; 347 const union acpi_object *properties; 348 struct list_head list; 349 }; 350 351 /* ACPI Device Specific Data (_DSD) */ 352 struct acpi_device_data { 353 const union acpi_object *pointer; 354 struct list_head properties; 355 const union acpi_object *of_compatible; 356 struct list_head subnodes; 357 }; 358 359 struct acpi_gpio_mapping; 360 361 /* Device */ 362 struct acpi_device { 363 int device_type; 364 acpi_handle handle; /* no handle for fixed hardware */ 365 struct fwnode_handle fwnode; 366 struct acpi_device *parent; 367 struct list_head children; 368 struct list_head node; 369 struct list_head wakeup_list; 370 struct list_head del_list; 371 struct acpi_device_status status; 372 struct acpi_device_flags flags; 373 struct acpi_device_pnp pnp; 374 struct acpi_device_power power; 375 struct acpi_device_wakeup wakeup; 376 struct acpi_device_perf performance; 377 struct acpi_device_dir dir; 378 struct acpi_device_data data; 379 struct acpi_scan_handler *handler; 380 struct acpi_hotplug_context *hp; 381 struct acpi_driver *driver; 382 const struct acpi_gpio_mapping *driver_gpios; 383 void *driver_data; 384 struct device dev; 385 unsigned int physical_node_count; 386 unsigned int dep_unmet; 387 struct list_head physical_node_list; 388 struct mutex physical_node_lock; 389 void (*remove)(struct acpi_device *); 390 }; 391 392 /* Non-device subnode */ 393 struct acpi_data_node { 394 const char *name; 395 acpi_handle handle; 396 struct fwnode_handle fwnode; 397 struct fwnode_handle *parent; 398 struct acpi_device_data data; 399 struct list_head sibling; 400 struct kobject kobj; 401 struct completion kobj_done; 402 }; 403 404 extern const struct fwnode_operations acpi_device_fwnode_ops; 405 extern const struct fwnode_operations acpi_data_fwnode_ops; 406 extern const struct fwnode_operations acpi_static_fwnode_ops; 407 408 bool is_acpi_device_node(const struct fwnode_handle *fwnode); 409 bool is_acpi_data_node(const struct fwnode_handle *fwnode); 410 411 static inline bool is_acpi_node(const struct fwnode_handle *fwnode) 412 { 413 return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode)); 414 } 415 416 #define to_acpi_device_node(__fwnode) \ 417 ({ \ 418 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \ 419 \ 420 is_acpi_device_node(__to_acpi_device_node_fwnode) ? \ 421 container_of(__to_acpi_device_node_fwnode, \ 422 struct acpi_device, fwnode) : \ 423 NULL; \ 424 }) 425 426 #define to_acpi_data_node(__fwnode) \ 427 ({ \ 428 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \ 429 \ 430 is_acpi_data_node(__to_acpi_data_node_fwnode) ? \ 431 container_of(__to_acpi_data_node_fwnode, \ 432 struct acpi_data_node, fwnode) : \ 433 NULL; \ 434 }) 435 436 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode) 437 { 438 return !IS_ERR_OR_NULL(fwnode) && 439 fwnode->ops == &acpi_static_fwnode_ops; 440 } 441 442 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode, 443 const char *name) 444 { 445 return is_acpi_data_node(fwnode) ? 446 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false; 447 } 448 449 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev) 450 { 451 return &adev->fwnode; 452 } 453 454 static inline void *acpi_driver_data(struct acpi_device *d) 455 { 456 return d->driver_data; 457 } 458 459 #define to_acpi_device(d) container_of(d, struct acpi_device, dev) 460 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) 461 462 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) 463 { 464 *((u32 *)&adev->status) = sta; 465 } 466 467 static inline void acpi_set_hp_context(struct acpi_device *adev, 468 struct acpi_hotplug_context *hp) 469 { 470 hp->self = adev; 471 adev->hp = hp; 472 } 473 474 void acpi_initialize_hp_context(struct acpi_device *adev, 475 struct acpi_hotplug_context *hp, 476 int (*notify)(struct acpi_device *, u32), 477 void (*uevent)(struct acpi_device *, u32)); 478 479 /* acpi_device.dev.bus == &acpi_bus_type */ 480 extern struct bus_type acpi_bus_type; 481 482 /* 483 * Events 484 * ------ 485 */ 486 487 struct acpi_bus_event { 488 struct list_head node; 489 acpi_device_class device_class; 490 acpi_bus_id bus_id; 491 u32 type; 492 u32 data; 493 }; 494 495 extern struct kobject *acpi_kobj; 496 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); 497 void acpi_bus_private_data_handler(acpi_handle, void *); 498 int acpi_bus_get_private_data(acpi_handle, void **); 499 int acpi_bus_attach_private_data(acpi_handle, void *); 500 void acpi_bus_detach_private_data(acpi_handle); 501 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); 502 extern int register_acpi_notifier(struct notifier_block *); 503 extern int unregister_acpi_notifier(struct notifier_block *); 504 505 /* 506 * External Functions 507 */ 508 509 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device); 510 acpi_status acpi_bus_get_status_handle(acpi_handle handle, 511 unsigned long long *sta); 512 int acpi_bus_get_status(struct acpi_device *device); 513 514 int acpi_bus_set_power(acpi_handle handle, int state); 515 const char *acpi_power_state_string(int state); 516 int acpi_device_set_power(struct acpi_device *device, int state); 517 int acpi_bus_init_power(struct acpi_device *device); 518 int acpi_device_fix_up_power(struct acpi_device *device); 519 int acpi_bus_update_power(acpi_handle handle, int *state_p); 520 int acpi_device_update_power(struct acpi_device *device, int *state_p); 521 bool acpi_bus_power_manageable(acpi_handle handle); 522 int acpi_device_power_add_dependent(struct acpi_device *adev, 523 struct device *dev); 524 void acpi_device_power_remove_dependent(struct acpi_device *adev, 525 struct device *dev); 526 527 #ifdef CONFIG_PM 528 bool acpi_bus_can_wakeup(acpi_handle handle); 529 #else 530 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } 531 #endif 532 533 void acpi_scan_lock_acquire(void); 534 void acpi_scan_lock_release(void); 535 void acpi_lock_hp_context(void); 536 void acpi_unlock_hp_context(void); 537 int acpi_scan_add_handler(struct acpi_scan_handler *handler); 538 int acpi_bus_register_driver(struct acpi_driver *driver); 539 void acpi_bus_unregister_driver(struct acpi_driver *driver); 540 int acpi_bus_scan(acpi_handle handle); 541 void acpi_bus_trim(struct acpi_device *start); 542 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); 543 int acpi_match_device_ids(struct acpi_device *device, 544 const struct acpi_device_id *ids); 545 void acpi_set_modalias(struct acpi_device *adev, const char *default_id, 546 char *modalias, size_t len); 547 int acpi_create_dir(struct acpi_device *); 548 void acpi_remove_dir(struct acpi_device *); 549 550 static inline bool acpi_device_enumerated(struct acpi_device *adev) 551 { 552 return adev && adev->flags.initialized && adev->flags.visited; 553 } 554 555 /** 556 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver 557 * @__acpi_driver: acpi_driver struct 558 * 559 * Helper macro for ACPI drivers which do not do anything special in module 560 * init/exit. This eliminates a lot of boilerplate. Each module may only 561 * use this macro once, and calling it replaces module_init() and module_exit() 562 */ 563 #define module_acpi_driver(__acpi_driver) \ 564 module_driver(__acpi_driver, acpi_bus_register_driver, \ 565 acpi_bus_unregister_driver) 566 567 /* 568 * Bind physical devices with ACPI devices 569 */ 570 struct acpi_bus_type { 571 struct list_head list; 572 const char *name; 573 bool (*match)(struct device *dev); 574 struct acpi_device * (*find_companion)(struct device *); 575 void (*setup)(struct device *); 576 }; 577 int register_acpi_bus_type(struct acpi_bus_type *); 578 int unregister_acpi_bus_type(struct acpi_bus_type *); 579 int acpi_bind_one(struct device *dev, struct acpi_device *adev); 580 int acpi_unbind_one(struct device *dev); 581 582 struct acpi_pci_root { 583 struct acpi_device * device; 584 struct pci_bus *bus; 585 u16 segment; 586 struct resource secondary; /* downstream bus range */ 587 588 u32 osc_support_set; /* _OSC state of support bits */ 589 u32 osc_control_set; /* _OSC state of control bits */ 590 phys_addr_t mcfg_addr; 591 }; 592 593 /* helper */ 594 595 bool acpi_dma_supported(const struct acpi_device *adev); 596 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev); 597 int acpi_iommu_fwspec_init(struct device *dev, u32 id, 598 struct fwnode_handle *fwnode, 599 const struct iommu_ops *ops); 600 int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset, 601 u64 *size); 602 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr, 603 const u32 *input_id); 604 static inline int acpi_dma_configure(struct device *dev, 605 enum dev_dma_attr attr) 606 { 607 return acpi_dma_configure_id(dev, attr, NULL); 608 } 609 struct acpi_device *acpi_find_child_device(struct acpi_device *parent, 610 u64 address, bool check_children); 611 int acpi_is_root_bridge(acpi_handle); 612 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); 613 614 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state); 615 int acpi_disable_wakeup_device_power(struct acpi_device *dev); 616 617 #ifdef CONFIG_X86 618 bool acpi_device_always_present(struct acpi_device *adev); 619 #else 620 static inline bool acpi_device_always_present(struct acpi_device *adev) 621 { 622 return false; 623 } 624 #endif 625 626 #ifdef CONFIG_PM 627 void acpi_pm_wakeup_event(struct device *dev); 628 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev, 629 void (*func)(struct acpi_device_wakeup_context *context)); 630 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev); 631 bool acpi_pm_device_can_wakeup(struct device *dev); 632 int acpi_pm_device_sleep_state(struct device *, int *, int); 633 int acpi_pm_set_device_wakeup(struct device *dev, bool enable); 634 #else 635 static inline void acpi_pm_wakeup_event(struct device *dev) 636 { 637 } 638 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev, 639 struct device *dev, 640 void (*func)(struct acpi_device_wakeup_context *context)) 641 { 642 return AE_SUPPORT; 643 } 644 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev) 645 { 646 return AE_SUPPORT; 647 } 648 static inline bool acpi_pm_device_can_wakeup(struct device *dev) 649 { 650 return false; 651 } 652 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m) 653 { 654 if (p) 655 *p = ACPI_STATE_D0; 656 657 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ? 658 m : ACPI_STATE_D0; 659 } 660 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable) 661 { 662 return -ENODEV; 663 } 664 #endif 665 666 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT 667 bool acpi_sleep_state_supported(u8 sleep_state); 668 #else 669 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; } 670 #endif 671 672 #ifdef CONFIG_ACPI_SLEEP 673 u32 acpi_target_system_state(void); 674 #else 675 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; } 676 #endif 677 678 static inline bool acpi_device_power_manageable(struct acpi_device *adev) 679 { 680 return adev->flags.power_manageable; 681 } 682 683 static inline bool acpi_device_can_wakeup(struct acpi_device *adev) 684 { 685 return adev->wakeup.flags.valid; 686 } 687 688 static inline bool acpi_device_can_poweroff(struct acpi_device *adev) 689 { 690 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid || 691 ((acpi_gbl_FADT.header.revision < 6) && 692 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set); 693 } 694 695 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2); 696 697 void acpi_dev_clear_dependencies(struct acpi_device *supplier); 698 bool acpi_dev_ready_for_enumeration(const struct acpi_device *device); 699 struct acpi_device *acpi_dev_get_first_consumer_dev(struct acpi_device *supplier); 700 struct acpi_device * 701 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv); 702 struct acpi_device * 703 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv); 704 705 /** 706 * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria 707 * @adev: pointer to the matching ACPI device, NULL at the end of the loop 708 * @hid: Hardware ID of the device. 709 * @uid: Unique ID of the device, pass NULL to not check _UID 710 * @hrv: Hardware Revision of the device, pass -1 to not check _HRV 711 * 712 * The caller is responsible for invoking acpi_dev_put() on the returned device. 713 */ 714 #define for_each_acpi_dev_match(adev, hid, uid, hrv) \ 715 for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \ 716 adev; \ 717 adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv)) 718 719 static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev) 720 { 721 return adev ? to_acpi_device(get_device(&adev->dev)) : NULL; 722 } 723 724 static inline void acpi_dev_put(struct acpi_device *adev) 725 { 726 if (adev) 727 put_device(&adev->dev); 728 } 729 730 struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle); 731 732 static inline void acpi_bus_put_acpi_device(struct acpi_device *adev) 733 { 734 acpi_dev_put(adev); 735 } 736 #else /* CONFIG_ACPI */ 737 738 static inline int register_acpi_bus_type(void *bus) { return 0; } 739 static inline int unregister_acpi_bus_type(void *bus) { return 0; } 740 741 #endif /* CONFIG_ACPI */ 742 743 #endif /*__ACPI_BUS_H__*/ 744