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 union acpi_object *properties; 348 struct list_head list; 349 void **bufs; 350 }; 351 352 /* ACPI Device Specific Data (_DSD) */ 353 struct acpi_device_data { 354 const union acpi_object *pointer; 355 struct list_head properties; 356 const union acpi_object *of_compatible; 357 struct list_head subnodes; 358 }; 359 360 struct acpi_gpio_mapping; 361 362 /* Device */ 363 struct acpi_device { 364 u32 pld_crc; 365 int device_type; 366 acpi_handle handle; /* no handle for fixed hardware */ 367 struct fwnode_handle fwnode; 368 struct acpi_device *parent; 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 const struct acpi_gpio_mapping *driver_gpios; 382 void *driver_data; 383 struct device dev; 384 unsigned int physical_node_count; 385 unsigned int dep_unmet; 386 struct list_head physical_node_list; 387 struct mutex physical_node_lock; 388 void (*remove)(struct acpi_device *); 389 }; 390 391 /* Non-device subnode */ 392 struct acpi_data_node { 393 const char *name; 394 acpi_handle handle; 395 struct fwnode_handle fwnode; 396 struct fwnode_handle *parent; 397 struct acpi_device_data data; 398 struct list_head sibling; 399 struct kobject kobj; 400 struct completion kobj_done; 401 }; 402 403 extern const struct fwnode_operations acpi_device_fwnode_ops; 404 extern const struct fwnode_operations acpi_data_fwnode_ops; 405 extern const struct fwnode_operations acpi_static_fwnode_ops; 406 407 bool is_acpi_device_node(const struct fwnode_handle *fwnode); 408 bool is_acpi_data_node(const struct fwnode_handle *fwnode); 409 410 static inline bool is_acpi_node(const struct fwnode_handle *fwnode) 411 { 412 return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode)); 413 } 414 415 #define to_acpi_device_node(__fwnode) \ 416 ({ \ 417 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \ 418 \ 419 is_acpi_device_node(__to_acpi_device_node_fwnode) ? \ 420 container_of(__to_acpi_device_node_fwnode, \ 421 struct acpi_device, fwnode) : \ 422 NULL; \ 423 }) 424 425 #define to_acpi_data_node(__fwnode) \ 426 ({ \ 427 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \ 428 \ 429 is_acpi_data_node(__to_acpi_data_node_fwnode) ? \ 430 container_of(__to_acpi_data_node_fwnode, \ 431 struct acpi_data_node, fwnode) : \ 432 NULL; \ 433 }) 434 435 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode) 436 { 437 return !IS_ERR_OR_NULL(fwnode) && 438 fwnode->ops == &acpi_static_fwnode_ops; 439 } 440 441 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode, 442 const char *name) 443 { 444 return is_acpi_data_node(fwnode) ? 445 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false; 446 } 447 448 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev) 449 { 450 return &adev->fwnode; 451 } 452 453 static inline void *acpi_driver_data(struct acpi_device *d) 454 { 455 return d->driver_data; 456 } 457 458 #define to_acpi_device(d) container_of(d, struct acpi_device, dev) 459 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) 460 461 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) 462 { 463 *((u32 *)&adev->status) = sta; 464 } 465 466 static inline void acpi_set_hp_context(struct acpi_device *adev, 467 struct acpi_hotplug_context *hp) 468 { 469 hp->self = adev; 470 adev->hp = hp; 471 } 472 473 void acpi_initialize_hp_context(struct acpi_device *adev, 474 struct acpi_hotplug_context *hp, 475 int (*notify)(struct acpi_device *, u32), 476 void (*uevent)(struct acpi_device *, u32)); 477 478 /* acpi_device.dev.bus == &acpi_bus_type */ 479 extern struct bus_type acpi_bus_type; 480 481 int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data); 482 int acpi_dev_for_each_child(struct acpi_device *adev, 483 int (*fn)(struct acpi_device *, void *), void *data); 484 int acpi_dev_for_each_child_reverse(struct acpi_device *adev, 485 int (*fn)(struct acpi_device *, void *), 486 void *data); 487 488 /* 489 * Events 490 * ------ 491 */ 492 493 struct acpi_bus_event { 494 struct list_head node; 495 acpi_device_class device_class; 496 acpi_bus_id bus_id; 497 u32 type; 498 u32 data; 499 }; 500 501 extern struct kobject *acpi_kobj; 502 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); 503 void acpi_bus_private_data_handler(acpi_handle, void *); 504 int acpi_bus_get_private_data(acpi_handle, void **); 505 int acpi_bus_attach_private_data(acpi_handle, void *); 506 void acpi_bus_detach_private_data(acpi_handle); 507 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); 508 extern int register_acpi_notifier(struct notifier_block *); 509 extern int unregister_acpi_notifier(struct notifier_block *); 510 511 /* 512 * External Functions 513 */ 514 515 struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle); 516 acpi_status acpi_bus_get_status_handle(acpi_handle handle, 517 unsigned long long *sta); 518 int acpi_bus_get_status(struct acpi_device *device); 519 520 int acpi_bus_set_power(acpi_handle handle, int state); 521 const char *acpi_power_state_string(int state); 522 int acpi_device_set_power(struct acpi_device *device, int state); 523 int acpi_bus_init_power(struct acpi_device *device); 524 int acpi_device_fix_up_power(struct acpi_device *device); 525 void acpi_device_fix_up_power_extended(struct acpi_device *adev); 526 int acpi_bus_update_power(acpi_handle handle, int *state_p); 527 int acpi_device_update_power(struct acpi_device *device, int *state_p); 528 bool acpi_bus_power_manageable(acpi_handle handle); 529 void acpi_dev_power_up_children_with_adr(struct acpi_device *adev); 530 int acpi_device_power_add_dependent(struct acpi_device *adev, 531 struct device *dev); 532 void acpi_device_power_remove_dependent(struct acpi_device *adev, 533 struct device *dev); 534 535 #ifdef CONFIG_PM 536 bool acpi_bus_can_wakeup(acpi_handle handle); 537 #else 538 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } 539 #endif 540 541 void acpi_scan_lock_acquire(void); 542 void acpi_scan_lock_release(void); 543 void acpi_lock_hp_context(void); 544 void acpi_unlock_hp_context(void); 545 int acpi_scan_add_handler(struct acpi_scan_handler *handler); 546 int acpi_bus_register_driver(struct acpi_driver *driver); 547 void acpi_bus_unregister_driver(struct acpi_driver *driver); 548 int acpi_bus_scan(acpi_handle handle); 549 void acpi_bus_trim(struct acpi_device *start); 550 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); 551 int acpi_match_device_ids(struct acpi_device *device, 552 const struct acpi_device_id *ids); 553 void acpi_set_modalias(struct acpi_device *adev, const char *default_id, 554 char *modalias, size_t len); 555 int acpi_create_dir(struct acpi_device *); 556 void acpi_remove_dir(struct acpi_device *); 557 558 static inline bool acpi_device_enumerated(struct acpi_device *adev) 559 { 560 return adev && adev->flags.initialized && adev->flags.visited; 561 } 562 563 /** 564 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver 565 * @__acpi_driver: acpi_driver struct 566 * 567 * Helper macro for ACPI drivers which do not do anything special in module 568 * init/exit. This eliminates a lot of boilerplate. Each module may only 569 * use this macro once, and calling it replaces module_init() and module_exit() 570 */ 571 #define module_acpi_driver(__acpi_driver) \ 572 module_driver(__acpi_driver, acpi_bus_register_driver, \ 573 acpi_bus_unregister_driver) 574 575 /* 576 * Bind physical devices with ACPI devices 577 */ 578 struct acpi_bus_type { 579 struct list_head list; 580 const char *name; 581 bool (*match)(struct device *dev); 582 struct acpi_device * (*find_companion)(struct device *); 583 void (*setup)(struct device *); 584 }; 585 int register_acpi_bus_type(struct acpi_bus_type *); 586 int unregister_acpi_bus_type(struct acpi_bus_type *); 587 int acpi_bind_one(struct device *dev, struct acpi_device *adev); 588 int acpi_unbind_one(struct device *dev); 589 590 enum acpi_bridge_type { 591 ACPI_BRIDGE_TYPE_PCIE = 1, 592 ACPI_BRIDGE_TYPE_CXL, 593 }; 594 595 struct acpi_pci_root { 596 struct acpi_device * device; 597 struct pci_bus *bus; 598 u16 segment; 599 int bridge_type; 600 struct resource secondary; /* downstream bus range */ 601 602 u32 osc_support_set; /* _OSC state of support bits */ 603 u32 osc_control_set; /* _OSC state of control bits */ 604 u32 osc_ext_support_set; /* _OSC state of extended support bits */ 605 u32 osc_ext_control_set; /* _OSC state of extended control bits */ 606 phys_addr_t mcfg_addr; 607 }; 608 609 /* helper */ 610 611 bool acpi_dma_supported(const struct acpi_device *adev); 612 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev); 613 int acpi_iommu_fwspec_init(struct device *dev, u32 id, 614 struct fwnode_handle *fwnode, 615 const struct iommu_ops *ops); 616 int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset, 617 u64 *size); 618 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr, 619 const u32 *input_id); 620 static inline int acpi_dma_configure(struct device *dev, 621 enum dev_dma_attr attr) 622 { 623 return acpi_dma_configure_id(dev, attr, NULL); 624 } 625 struct acpi_device *acpi_find_child_device(struct acpi_device *parent, 626 u64 address, bool check_children); 627 struct acpi_device *acpi_find_child_by_adr(struct acpi_device *adev, 628 acpi_bus_address adr); 629 int acpi_is_root_bridge(acpi_handle); 630 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); 631 632 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state); 633 int acpi_disable_wakeup_device_power(struct acpi_device *dev); 634 635 #ifdef CONFIG_X86 636 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status); 637 bool acpi_quirk_skip_acpi_ac_and_battery(void); 638 #else 639 static inline bool acpi_device_override_status(struct acpi_device *adev, 640 unsigned long long *status) 641 { 642 return false; 643 } 644 static inline bool acpi_quirk_skip_acpi_ac_and_battery(void) 645 { 646 return false; 647 } 648 #endif 649 650 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS) 651 bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev); 652 int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip); 653 #else 654 static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev) 655 { 656 return false; 657 } 658 static inline int 659 acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip) 660 { 661 *skip = false; 662 return 0; 663 } 664 #endif 665 666 #ifdef CONFIG_PM 667 void acpi_pm_wakeup_event(struct device *dev); 668 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev, 669 void (*func)(struct acpi_device_wakeup_context *context)); 670 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev); 671 bool acpi_pm_device_can_wakeup(struct device *dev); 672 int acpi_pm_device_sleep_state(struct device *, int *, int); 673 int acpi_pm_set_device_wakeup(struct device *dev, bool enable); 674 #else 675 static inline void acpi_pm_wakeup_event(struct device *dev) 676 { 677 } 678 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev, 679 struct device *dev, 680 void (*func)(struct acpi_device_wakeup_context *context)) 681 { 682 return AE_SUPPORT; 683 } 684 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev) 685 { 686 return AE_SUPPORT; 687 } 688 static inline bool acpi_pm_device_can_wakeup(struct device *dev) 689 { 690 return false; 691 } 692 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m) 693 { 694 if (p) 695 *p = ACPI_STATE_D0; 696 697 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ? 698 m : ACPI_STATE_D0; 699 } 700 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable) 701 { 702 return -ENODEV; 703 } 704 #endif 705 706 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT 707 bool acpi_sleep_state_supported(u8 sleep_state); 708 #else 709 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; } 710 #endif 711 712 #ifdef CONFIG_ACPI_SLEEP 713 u32 acpi_target_system_state(void); 714 #else 715 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; } 716 #endif 717 718 static inline bool acpi_device_power_manageable(struct acpi_device *adev) 719 { 720 return adev->flags.power_manageable; 721 } 722 723 static inline bool acpi_device_can_wakeup(struct acpi_device *adev) 724 { 725 return adev->wakeup.flags.valid; 726 } 727 728 static inline bool acpi_device_can_poweroff(struct acpi_device *adev) 729 { 730 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid || 731 ((acpi_gbl_FADT.header.revision < 6) && 732 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set); 733 } 734 735 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2); 736 737 void acpi_dev_clear_dependencies(struct acpi_device *supplier); 738 bool acpi_dev_ready_for_enumeration(const struct acpi_device *device); 739 struct acpi_device *acpi_dev_get_first_consumer_dev(struct acpi_device *supplier); 740 struct acpi_device * 741 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv); 742 struct acpi_device * 743 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv); 744 745 /** 746 * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria 747 * @adev: pointer to the matching ACPI device, NULL at the end of the loop 748 * @hid: Hardware ID of the device. 749 * @uid: Unique ID of the device, pass NULL to not check _UID 750 * @hrv: Hardware Revision of the device, pass -1 to not check _HRV 751 * 752 * The caller is responsible for invoking acpi_dev_put() on the returned device. 753 */ 754 #define for_each_acpi_dev_match(adev, hid, uid, hrv) \ 755 for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \ 756 adev; \ 757 adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv)) 758 759 static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev) 760 { 761 return adev ? to_acpi_device(get_device(&adev->dev)) : NULL; 762 } 763 764 static inline void acpi_dev_put(struct acpi_device *adev) 765 { 766 if (adev) 767 put_device(&adev->dev); 768 } 769 770 struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle); 771 772 static inline void acpi_bus_put_acpi_device(struct acpi_device *adev) 773 { 774 acpi_dev_put(adev); 775 } 776 #else /* CONFIG_ACPI */ 777 778 static inline int register_acpi_bus_type(void *bus) { return 0; } 779 static inline int unregister_acpi_bus_type(void *bus) { return 0; } 780 781 #endif /* CONFIG_ACPI */ 782 783 #endif /*__ACPI_BUS_H__*/ 784