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 #ifdef CONFIG_ACPI 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 #endif 72 73 #define ACPI_INIT_DSM_ARGV4(cnt, eles) \ 74 { \ 75 .package.type = ACPI_TYPE_PACKAGE, \ 76 .package.count = (cnt), \ 77 .package.elements = (eles) \ 78 } 79 80 bool acpi_dev_found(const char *hid); 81 bool acpi_dev_present(const char *hid, const char *uid, s64 hrv); 82 bool acpi_reduced_hardware(void); 83 84 #ifdef CONFIG_ACPI 85 86 struct proc_dir_entry; 87 88 #define ACPI_BUS_FILE_ROOT "acpi" 89 extern struct proc_dir_entry *acpi_root_dir; 90 91 enum acpi_bus_device_type { 92 ACPI_BUS_TYPE_DEVICE = 0, 93 ACPI_BUS_TYPE_POWER, 94 ACPI_BUS_TYPE_PROCESSOR, 95 ACPI_BUS_TYPE_THERMAL, 96 ACPI_BUS_TYPE_POWER_BUTTON, 97 ACPI_BUS_TYPE_SLEEP_BUTTON, 98 ACPI_BUS_TYPE_ECDT_EC, 99 ACPI_BUS_DEVICE_TYPE_COUNT 100 }; 101 102 struct acpi_driver; 103 struct acpi_device; 104 105 /* 106 * ACPI Scan Handler 107 * ----------------- 108 */ 109 110 struct acpi_hotplug_profile { 111 struct kobject kobj; 112 int (*scan_dependent)(struct acpi_device *adev); 113 void (*notify_online)(struct acpi_device *adev); 114 bool enabled:1; 115 bool demand_offline:1; 116 }; 117 118 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile( 119 struct kobject *kobj) 120 { 121 return container_of(kobj, struct acpi_hotplug_profile, kobj); 122 } 123 124 struct acpi_scan_handler { 125 const struct acpi_device_id *ids; 126 struct list_head list_node; 127 bool (*match)(const char *idstr, const struct acpi_device_id **matchid); 128 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id); 129 void (*detach)(struct acpi_device *dev); 130 void (*bind)(struct device *phys_dev); 131 void (*unbind)(struct device *phys_dev); 132 struct acpi_hotplug_profile hotplug; 133 }; 134 135 /* 136 * ACPI Hotplug Context 137 * -------------------- 138 */ 139 140 struct acpi_hotplug_context { 141 struct acpi_device *self; 142 int (*notify)(struct acpi_device *, u32); 143 void (*uevent)(struct acpi_device *, u32); 144 void (*fixup)(struct acpi_device *); 145 }; 146 147 /* 148 * ACPI Driver 149 * ----------- 150 */ 151 152 typedef int (*acpi_op_add) (struct acpi_device * device); 153 typedef void (*acpi_op_remove) (struct acpi_device *device); 154 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event); 155 156 struct acpi_device_ops { 157 acpi_op_add add; 158 acpi_op_remove remove; 159 acpi_op_notify notify; 160 }; 161 162 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */ 163 164 struct acpi_driver { 165 char name[80]; 166 char class[80]; 167 const struct acpi_device_id *ids; /* Supported Hardware IDs */ 168 unsigned int flags; 169 struct acpi_device_ops ops; 170 struct device_driver drv; 171 struct module *owner; 172 }; 173 174 /* 175 * ACPI Device 176 * ----------- 177 */ 178 179 /* Status (_STA) */ 180 181 struct acpi_device_status { 182 u32 present:1; 183 u32 enabled:1; 184 u32 show_in_ui:1; 185 u32 functional:1; 186 u32 battery_present:1; 187 u32 reserved:27; 188 }; 189 190 /* Flags */ 191 192 struct acpi_device_flags { 193 u32 dynamic_status:1; 194 u32 removable:1; 195 u32 ejectable:1; 196 u32 power_manageable:1; 197 u32 match_driver:1; 198 u32 initialized:1; 199 u32 visited:1; 200 u32 hotplug_notify:1; 201 u32 is_dock_station:1; 202 u32 of_compatible_ok:1; 203 u32 coherent_dma:1; 204 u32 cca_seen:1; 205 u32 enumeration_by_parent:1; 206 u32 honor_deps:1; 207 u32 reserved:18; 208 }; 209 210 /* File System */ 211 212 struct acpi_device_dir { 213 struct proc_dir_entry *entry; 214 }; 215 216 #define acpi_device_dir(d) ((d)->dir.entry) 217 218 /* Plug and Play */ 219 220 typedef char acpi_bus_id[8]; 221 typedef u64 acpi_bus_address; 222 typedef char acpi_device_name[40]; 223 typedef char acpi_device_class[20]; 224 225 struct acpi_hardware_id { 226 struct list_head list; 227 const char *id; 228 }; 229 230 struct acpi_pnp_type { 231 u32 hardware_id:1; 232 u32 bus_address:1; 233 u32 platform_id:1; 234 u32 backlight:1; 235 u32 reserved:28; 236 }; 237 238 struct acpi_device_pnp { 239 acpi_bus_id bus_id; /* Object name */ 240 int instance_no; /* Instance number of this object */ 241 struct acpi_pnp_type type; /* ID type */ 242 acpi_bus_address bus_address; /* _ADR */ 243 char *unique_id; /* _UID */ 244 struct list_head ids; /* _HID and _CIDs */ 245 acpi_device_name device_name; /* Driver-determined */ 246 acpi_device_class device_class; /* " */ 247 union acpi_object *str_obj; /* unicode string for _STR method */ 248 }; 249 250 #define acpi_device_bid(d) ((d)->pnp.bus_id) 251 #define acpi_device_adr(d) ((d)->pnp.bus_address) 252 const char *acpi_device_hid(struct acpi_device *device); 253 #define acpi_device_uid(d) ((d)->pnp.unique_id) 254 #define acpi_device_name(d) ((d)->pnp.device_name) 255 #define acpi_device_class(d) ((d)->pnp.device_class) 256 257 /* Power Management */ 258 259 struct acpi_device_power_flags { 260 u32 explicit_get:1; /* _PSC present? */ 261 u32 power_resources:1; /* Power resources */ 262 u32 inrush_current:1; /* Serialize Dx->D0 */ 263 u32 power_removed:1; /* Optimize Dx->D0 */ 264 u32 ignore_parent:1; /* Power is independent of parent power state */ 265 u32 dsw_present:1; /* _DSW present? */ 266 u32 reserved:26; 267 }; 268 269 struct acpi_device_power_state { 270 struct { 271 u8 valid:1; 272 u8 explicit_set:1; /* _PSx present? */ 273 u8 reserved:6; 274 } flags; 275 int power; /* % Power (compared to D0) */ 276 int latency; /* Dx->D0 time (microseconds) */ 277 struct list_head resources; /* Power resources referenced */ 278 }; 279 280 struct acpi_device_power { 281 int state; /* Current state */ 282 struct acpi_device_power_flags flags; 283 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */ 284 u8 state_for_enumeration; /* Deepest power state for enumeration */ 285 }; 286 287 struct acpi_dep_data { 288 struct list_head node; 289 acpi_handle supplier; 290 acpi_handle consumer; 291 bool honor_dep; 292 bool met; 293 bool free_when_met; 294 }; 295 296 /* Performance Management */ 297 298 struct acpi_device_perf_flags { 299 u8 reserved:8; 300 }; 301 302 struct acpi_device_perf_state { 303 struct { 304 u8 valid:1; 305 u8 reserved:7; 306 } flags; 307 u8 power; /* % Power (compared to P0) */ 308 u8 performance; /* % Performance ( " ) */ 309 int latency; /* Px->P0 time (microseconds) */ 310 }; 311 312 struct acpi_device_perf { 313 int state; 314 struct acpi_device_perf_flags flags; 315 int state_count; 316 struct acpi_device_perf_state *states; 317 }; 318 319 /* Wakeup Management */ 320 struct acpi_device_wakeup_flags { 321 u8 valid:1; /* Can successfully enable wakeup? */ 322 u8 notifier_present:1; /* Wake-up notify handler has been installed */ 323 }; 324 325 struct acpi_device_wakeup_context { 326 void (*func)(struct acpi_device_wakeup_context *context); 327 struct device *dev; 328 }; 329 330 struct acpi_device_wakeup { 331 acpi_handle gpe_device; 332 u64 gpe_number; 333 u64 sleep_state; 334 struct list_head resources; 335 struct acpi_device_wakeup_flags flags; 336 struct acpi_device_wakeup_context context; 337 struct wakeup_source *ws; 338 int prepare_count; 339 int enable_count; 340 }; 341 342 struct acpi_device_physical_node { 343 unsigned int node_id; 344 struct list_head node; 345 struct device *dev; 346 bool put_online:1; 347 }; 348 349 struct acpi_device_properties { 350 const guid_t *guid; 351 union acpi_object *properties; 352 struct list_head list; 353 void **bufs; 354 }; 355 356 /* ACPI Device Specific Data (_DSD) */ 357 struct acpi_device_data { 358 const union acpi_object *pointer; 359 struct list_head properties; 360 const union acpi_object *of_compatible; 361 struct list_head subnodes; 362 }; 363 364 struct acpi_gpio_mapping; 365 366 /* Device */ 367 struct acpi_device { 368 u32 pld_crc; 369 int device_type; 370 acpi_handle handle; /* no handle for fixed hardware */ 371 struct fwnode_handle fwnode; 372 struct list_head wakeup_list; 373 struct list_head del_list; 374 struct acpi_device_status status; 375 struct acpi_device_flags flags; 376 struct acpi_device_pnp pnp; 377 struct acpi_device_power power; 378 struct acpi_device_wakeup wakeup; 379 struct acpi_device_perf performance; 380 struct acpi_device_dir dir; 381 struct acpi_device_data data; 382 struct acpi_scan_handler *handler; 383 struct acpi_hotplug_context *hp; 384 const struct acpi_gpio_mapping *driver_gpios; 385 void *driver_data; 386 struct device dev; 387 unsigned int physical_node_count; 388 unsigned int dep_unmet; 389 struct list_head physical_node_list; 390 struct mutex physical_node_lock; 391 void (*remove)(struct acpi_device *); 392 }; 393 394 /* Non-device subnode */ 395 struct acpi_data_node { 396 const char *name; 397 acpi_handle handle; 398 struct fwnode_handle fwnode; 399 struct fwnode_handle *parent; 400 struct acpi_device_data data; 401 struct list_head sibling; 402 struct kobject kobj; 403 struct completion kobj_done; 404 }; 405 406 extern const struct fwnode_operations acpi_device_fwnode_ops; 407 extern const struct fwnode_operations acpi_data_fwnode_ops; 408 extern const struct fwnode_operations acpi_static_fwnode_ops; 409 410 bool is_acpi_device_node(const struct fwnode_handle *fwnode); 411 bool is_acpi_data_node(const struct fwnode_handle *fwnode); 412 413 static inline bool is_acpi_node(const struct fwnode_handle *fwnode) 414 { 415 return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode)); 416 } 417 418 #define to_acpi_device_node(__fwnode) \ 419 ({ \ 420 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \ 421 \ 422 is_acpi_device_node(__to_acpi_device_node_fwnode) ? \ 423 container_of(__to_acpi_device_node_fwnode, \ 424 struct acpi_device, fwnode) : \ 425 NULL; \ 426 }) 427 428 #define to_acpi_data_node(__fwnode) \ 429 ({ \ 430 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \ 431 \ 432 is_acpi_data_node(__to_acpi_data_node_fwnode) ? \ 433 container_of(__to_acpi_data_node_fwnode, \ 434 struct acpi_data_node, fwnode) : \ 435 NULL; \ 436 }) 437 438 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode) 439 { 440 return !IS_ERR_OR_NULL(fwnode) && 441 fwnode->ops == &acpi_static_fwnode_ops; 442 } 443 444 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode, 445 const char *name) 446 { 447 return is_acpi_data_node(fwnode) ? 448 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false; 449 } 450 451 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev) 452 { 453 return &adev->fwnode; 454 } 455 456 static inline void *acpi_driver_data(struct acpi_device *d) 457 { 458 return d->driver_data; 459 } 460 461 #define to_acpi_device(d) container_of(d, struct acpi_device, dev) 462 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) 463 464 static inline struct acpi_device *acpi_dev_parent(struct acpi_device *adev) 465 { 466 if (adev->dev.parent) 467 return to_acpi_device(adev->dev.parent); 468 469 return NULL; 470 } 471 472 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) 473 { 474 *((u32 *)&adev->status) = sta; 475 } 476 477 static inline void acpi_set_hp_context(struct acpi_device *adev, 478 struct acpi_hotplug_context *hp) 479 { 480 hp->self = adev; 481 adev->hp = hp; 482 } 483 484 void acpi_initialize_hp_context(struct acpi_device *adev, 485 struct acpi_hotplug_context *hp, 486 int (*notify)(struct acpi_device *, u32), 487 void (*uevent)(struct acpi_device *, u32)); 488 489 /* acpi_device.dev.bus == &acpi_bus_type */ 490 extern struct bus_type acpi_bus_type; 491 492 int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data); 493 int acpi_dev_for_each_child(struct acpi_device *adev, 494 int (*fn)(struct acpi_device *, void *), void *data); 495 int acpi_dev_for_each_child_reverse(struct acpi_device *adev, 496 int (*fn)(struct acpi_device *, void *), 497 void *data); 498 499 /* 500 * Events 501 * ------ 502 */ 503 504 struct acpi_bus_event { 505 struct list_head node; 506 acpi_device_class device_class; 507 acpi_bus_id bus_id; 508 u32 type; 509 u32 data; 510 }; 511 512 extern struct kobject *acpi_kobj; 513 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); 514 void acpi_bus_private_data_handler(acpi_handle, void *); 515 int acpi_bus_get_private_data(acpi_handle, void **); 516 int acpi_bus_attach_private_data(acpi_handle, void *); 517 void acpi_bus_detach_private_data(acpi_handle); 518 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); 519 extern int register_acpi_notifier(struct notifier_block *); 520 extern int unregister_acpi_notifier(struct notifier_block *); 521 522 /* 523 * External Functions 524 */ 525 526 acpi_status acpi_bus_get_status_handle(acpi_handle handle, 527 unsigned long long *sta); 528 int acpi_bus_get_status(struct acpi_device *device); 529 530 int acpi_bus_set_power(acpi_handle handle, int state); 531 const char *acpi_power_state_string(int state); 532 int acpi_device_set_power(struct acpi_device *device, int state); 533 int acpi_bus_init_power(struct acpi_device *device); 534 int acpi_device_fix_up_power(struct acpi_device *device); 535 void acpi_device_fix_up_power_extended(struct acpi_device *adev); 536 int acpi_bus_update_power(acpi_handle handle, int *state_p); 537 int acpi_device_update_power(struct acpi_device *device, int *state_p); 538 bool acpi_bus_power_manageable(acpi_handle handle); 539 void acpi_dev_power_up_children_with_adr(struct acpi_device *adev); 540 u8 acpi_dev_power_state_for_wake(struct acpi_device *adev); 541 int acpi_device_power_add_dependent(struct acpi_device *adev, 542 struct device *dev); 543 void acpi_device_power_remove_dependent(struct acpi_device *adev, 544 struct device *dev); 545 546 #ifdef CONFIG_PM 547 bool acpi_bus_can_wakeup(acpi_handle handle); 548 #else 549 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } 550 #endif 551 552 void acpi_scan_lock_acquire(void); 553 void acpi_scan_lock_release(void); 554 void acpi_lock_hp_context(void); 555 void acpi_unlock_hp_context(void); 556 int acpi_scan_add_handler(struct acpi_scan_handler *handler); 557 int acpi_bus_register_driver(struct acpi_driver *driver); 558 void acpi_bus_unregister_driver(struct acpi_driver *driver); 559 int acpi_bus_scan(acpi_handle handle); 560 void acpi_bus_trim(struct acpi_device *start); 561 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); 562 int acpi_match_device_ids(struct acpi_device *device, 563 const struct acpi_device_id *ids); 564 void acpi_set_modalias(struct acpi_device *adev, const char *default_id, 565 char *modalias, size_t len); 566 int acpi_create_dir(struct acpi_device *); 567 void acpi_remove_dir(struct acpi_device *); 568 569 static inline bool acpi_device_enumerated(struct acpi_device *adev) 570 { 571 return adev && adev->flags.initialized && adev->flags.visited; 572 } 573 574 /** 575 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver 576 * @__acpi_driver: acpi_driver struct 577 * 578 * Helper macro for ACPI drivers which do not do anything special in module 579 * init/exit. This eliminates a lot of boilerplate. Each module may only 580 * use this macro once, and calling it replaces module_init() and module_exit() 581 */ 582 #define module_acpi_driver(__acpi_driver) \ 583 module_driver(__acpi_driver, acpi_bus_register_driver, \ 584 acpi_bus_unregister_driver) 585 586 /* 587 * Bind physical devices with ACPI devices 588 */ 589 struct acpi_bus_type { 590 struct list_head list; 591 const char *name; 592 bool (*match)(struct device *dev); 593 struct acpi_device * (*find_companion)(struct device *); 594 void (*setup)(struct device *); 595 }; 596 int register_acpi_bus_type(struct acpi_bus_type *); 597 int unregister_acpi_bus_type(struct acpi_bus_type *); 598 int acpi_bind_one(struct device *dev, struct acpi_device *adev); 599 int acpi_unbind_one(struct device *dev); 600 601 enum acpi_bridge_type { 602 ACPI_BRIDGE_TYPE_PCIE = 1, 603 ACPI_BRIDGE_TYPE_CXL, 604 }; 605 606 struct acpi_pci_root { 607 struct acpi_device * device; 608 struct pci_bus *bus; 609 u16 segment; 610 int bridge_type; 611 struct resource secondary; /* downstream bus range */ 612 613 u32 osc_support_set; /* _OSC state of support bits */ 614 u32 osc_control_set; /* _OSC state of control bits */ 615 u32 osc_ext_support_set; /* _OSC state of extended support bits */ 616 u32 osc_ext_control_set; /* _OSC state of extended control bits */ 617 phys_addr_t mcfg_addr; 618 }; 619 620 /* helper */ 621 622 bool acpi_dma_supported(const struct acpi_device *adev); 623 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev); 624 int acpi_iommu_fwspec_init(struct device *dev, u32 id, 625 struct fwnode_handle *fwnode, 626 const struct iommu_ops *ops); 627 int acpi_dma_get_range(struct device *dev, const struct bus_dma_region **map); 628 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr, 629 const u32 *input_id); 630 static inline int acpi_dma_configure(struct device *dev, 631 enum dev_dma_attr attr) 632 { 633 return acpi_dma_configure_id(dev, attr, NULL); 634 } 635 struct acpi_device *acpi_find_child_device(struct acpi_device *parent, 636 u64 address, bool check_children); 637 struct acpi_device *acpi_find_child_by_adr(struct acpi_device *adev, 638 acpi_bus_address adr); 639 int acpi_is_root_bridge(acpi_handle); 640 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); 641 642 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state); 643 int acpi_disable_wakeup_device_power(struct acpi_device *dev); 644 645 #ifdef CONFIG_X86 646 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status); 647 bool acpi_quirk_skip_acpi_ac_and_battery(void); 648 #else 649 static inline bool acpi_device_override_status(struct acpi_device *adev, 650 unsigned long long *status) 651 { 652 return false; 653 } 654 static inline bool acpi_quirk_skip_acpi_ac_and_battery(void) 655 { 656 return false; 657 } 658 #endif 659 660 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS) 661 bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev); 662 int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip); 663 bool acpi_quirk_skip_gpio_event_handlers(void); 664 #else 665 static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev) 666 { 667 return false; 668 } 669 static inline int 670 acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip) 671 { 672 *skip = false; 673 return 0; 674 } 675 static inline bool acpi_quirk_skip_gpio_event_handlers(void) 676 { 677 return false; 678 } 679 #endif 680 681 #ifdef CONFIG_PM 682 void acpi_pm_wakeup_event(struct device *dev); 683 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev, 684 void (*func)(struct acpi_device_wakeup_context *context)); 685 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev); 686 bool acpi_pm_device_can_wakeup(struct device *dev); 687 int acpi_pm_device_sleep_state(struct device *, int *, int); 688 int acpi_pm_set_device_wakeup(struct device *dev, bool enable); 689 #else 690 static inline void acpi_pm_wakeup_event(struct device *dev) 691 { 692 } 693 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev, 694 struct device *dev, 695 void (*func)(struct acpi_device_wakeup_context *context)) 696 { 697 return AE_SUPPORT; 698 } 699 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev) 700 { 701 return AE_SUPPORT; 702 } 703 static inline bool acpi_pm_device_can_wakeup(struct device *dev) 704 { 705 return false; 706 } 707 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m) 708 { 709 if (p) 710 *p = ACPI_STATE_D0; 711 712 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ? 713 m : ACPI_STATE_D0; 714 } 715 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable) 716 { 717 return -ENODEV; 718 } 719 #endif 720 721 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT 722 bool acpi_sleep_state_supported(u8 sleep_state); 723 #else 724 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; } 725 #endif 726 727 #ifdef CONFIG_ACPI_SLEEP 728 u32 acpi_target_system_state(void); 729 #else 730 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; } 731 #endif 732 733 static inline bool acpi_device_power_manageable(struct acpi_device *adev) 734 { 735 return adev->flags.power_manageable; 736 } 737 738 static inline bool acpi_device_can_wakeup(struct acpi_device *adev) 739 { 740 return adev->wakeup.flags.valid; 741 } 742 743 static inline bool acpi_device_can_poweroff(struct acpi_device *adev) 744 { 745 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid || 746 ((acpi_gbl_FADT.header.revision < 6) && 747 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set); 748 } 749 750 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2); 751 int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer); 752 753 void acpi_dev_clear_dependencies(struct acpi_device *supplier); 754 bool acpi_dev_ready_for_enumeration(const struct acpi_device *device); 755 struct acpi_device *acpi_dev_get_next_consumer_dev(struct acpi_device *supplier, 756 struct acpi_device *start); 757 758 /** 759 * for_each_acpi_consumer_dev - iterate over the consumer ACPI devices for a 760 * given supplier 761 * @supplier: Pointer to the supplier's ACPI device 762 * @consumer: Pointer to &struct acpi_device to hold the consumer, initially NULL 763 */ 764 #define for_each_acpi_consumer_dev(supplier, consumer) \ 765 for (consumer = acpi_dev_get_next_consumer_dev(supplier, NULL); \ 766 consumer; \ 767 consumer = acpi_dev_get_next_consumer_dev(supplier, consumer)) 768 769 struct acpi_device * 770 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv); 771 struct acpi_device * 772 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv); 773 774 /** 775 * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria 776 * @adev: pointer to the matching ACPI device, NULL at the end of the loop 777 * @hid: Hardware ID of the device. 778 * @uid: Unique ID of the device, pass NULL to not check _UID 779 * @hrv: Hardware Revision of the device, pass -1 to not check _HRV 780 * 781 * The caller is responsible for invoking acpi_dev_put() on the returned device. 782 */ 783 #define for_each_acpi_dev_match(adev, hid, uid, hrv) \ 784 for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \ 785 adev; \ 786 adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv)) 787 788 static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev) 789 { 790 return adev ? to_acpi_device(get_device(&adev->dev)) : NULL; 791 } 792 793 static inline void acpi_dev_put(struct acpi_device *adev) 794 { 795 if (adev) 796 put_device(&adev->dev); 797 } 798 799 struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle); 800 struct acpi_device *acpi_get_acpi_dev(acpi_handle handle); 801 802 static inline void acpi_put_acpi_dev(struct acpi_device *adev) 803 { 804 acpi_dev_put(adev); 805 } 806 #else /* CONFIG_ACPI */ 807 808 static inline int register_acpi_bus_type(void *bus) { return 0; } 809 static inline int unregister_acpi_bus_type(void *bus) { return 0; } 810 811 #endif /* CONFIG_ACPI */ 812 813 #endif /*__ACPI_BUS_H__*/ 814