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 void (*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 backlight:1; 234 u32 reserved:28; 235 }; 236 237 struct acpi_device_pnp { 238 acpi_bus_id bus_id; /* Object name */ 239 int instance_no; /* Instance number of this object */ 240 struct acpi_pnp_type type; /* ID type */ 241 acpi_bus_address bus_address; /* _ADR */ 242 char *unique_id; /* _UID */ 243 struct list_head ids; /* _HID and _CIDs */ 244 acpi_device_name device_name; /* Driver-determined */ 245 acpi_device_class device_class; /* " */ 246 union acpi_object *str_obj; /* unicode string for _STR method */ 247 }; 248 249 #define acpi_device_bid(d) ((d)->pnp.bus_id) 250 #define acpi_device_adr(d) ((d)->pnp.bus_address) 251 const char *acpi_device_hid(struct acpi_device *device); 252 #define acpi_device_uid(d) ((d)->pnp.unique_id) 253 #define acpi_device_name(d) ((d)->pnp.device_name) 254 #define acpi_device_class(d) ((d)->pnp.device_class) 255 256 /* Power Management */ 257 258 struct acpi_device_power_flags { 259 u32 explicit_get:1; /* _PSC present? */ 260 u32 power_resources:1; /* Power resources */ 261 u32 inrush_current:1; /* Serialize Dx->D0 */ 262 u32 power_removed:1; /* Optimize Dx->D0 */ 263 u32 ignore_parent:1; /* Power is independent of parent power state */ 264 u32 dsw_present:1; /* _DSW present? */ 265 u32 reserved:26; 266 }; 267 268 struct acpi_device_power_state { 269 struct { 270 u8 valid:1; 271 u8 explicit_set:1; /* _PSx present? */ 272 u8 reserved:6; 273 } flags; 274 int power; /* % Power (compared to D0) */ 275 int latency; /* Dx->D0 time (microseconds) */ 276 struct list_head resources; /* Power resources referenced */ 277 }; 278 279 struct acpi_device_power { 280 int state; /* Current state */ 281 struct acpi_device_power_flags flags; 282 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */ 283 u8 state_for_enumeration; /* Deepest power state for enumeration */ 284 }; 285 286 struct acpi_dep_data { 287 struct list_head node; 288 acpi_handle supplier; 289 acpi_handle consumer; 290 bool honor_dep; 291 }; 292 293 /* Performance Management */ 294 295 struct acpi_device_perf_flags { 296 u8 reserved:8; 297 }; 298 299 struct acpi_device_perf_state { 300 struct { 301 u8 valid:1; 302 u8 reserved:7; 303 } flags; 304 u8 power; /* % Power (compared to P0) */ 305 u8 performance; /* % Performance ( " ) */ 306 int latency; /* Px->P0 time (microseconds) */ 307 }; 308 309 struct acpi_device_perf { 310 int state; 311 struct acpi_device_perf_flags flags; 312 int state_count; 313 struct acpi_device_perf_state *states; 314 }; 315 316 /* Wakeup Management */ 317 struct acpi_device_wakeup_flags { 318 u8 valid:1; /* Can successfully enable wakeup? */ 319 u8 notifier_present:1; /* Wake-up notify handler has been installed */ 320 }; 321 322 struct acpi_device_wakeup_context { 323 void (*func)(struct acpi_device_wakeup_context *context); 324 struct device *dev; 325 }; 326 327 struct acpi_device_wakeup { 328 acpi_handle gpe_device; 329 u64 gpe_number; 330 u64 sleep_state; 331 struct list_head resources; 332 struct acpi_device_wakeup_flags flags; 333 struct acpi_device_wakeup_context context; 334 struct wakeup_source *ws; 335 int prepare_count; 336 int enable_count; 337 }; 338 339 struct acpi_device_physical_node { 340 unsigned int node_id; 341 struct list_head node; 342 struct device *dev; 343 bool put_online:1; 344 }; 345 346 struct acpi_device_properties { 347 const guid_t *guid; 348 union acpi_object *properties; 349 struct list_head list; 350 void **bufs; 351 }; 352 353 /* ACPI Device Specific Data (_DSD) */ 354 struct acpi_device_data { 355 const union acpi_object *pointer; 356 struct list_head properties; 357 const union acpi_object *of_compatible; 358 struct list_head subnodes; 359 }; 360 361 struct acpi_gpio_mapping; 362 363 /* Device */ 364 struct acpi_device { 365 u32 pld_crc; 366 int device_type; 367 acpi_handle handle; /* no handle for fixed hardware */ 368 struct fwnode_handle fwnode; 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 struct acpi_device *acpi_dev_parent(struct acpi_device *adev) 462 { 463 if (adev->dev.parent) 464 return to_acpi_device(adev->dev.parent); 465 466 return NULL; 467 } 468 469 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) 470 { 471 *((u32 *)&adev->status) = sta; 472 } 473 474 static inline void acpi_set_hp_context(struct acpi_device *adev, 475 struct acpi_hotplug_context *hp) 476 { 477 hp->self = adev; 478 adev->hp = hp; 479 } 480 481 void acpi_initialize_hp_context(struct acpi_device *adev, 482 struct acpi_hotplug_context *hp, 483 int (*notify)(struct acpi_device *, u32), 484 void (*uevent)(struct acpi_device *, u32)); 485 486 /* acpi_device.dev.bus == &acpi_bus_type */ 487 extern struct bus_type acpi_bus_type; 488 489 int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data); 490 int acpi_dev_for_each_child(struct acpi_device *adev, 491 int (*fn)(struct acpi_device *, void *), void *data); 492 int acpi_dev_for_each_child_reverse(struct acpi_device *adev, 493 int (*fn)(struct acpi_device *, void *), 494 void *data); 495 496 /* 497 * Events 498 * ------ 499 */ 500 501 struct acpi_bus_event { 502 struct list_head node; 503 acpi_device_class device_class; 504 acpi_bus_id bus_id; 505 u32 type; 506 u32 data; 507 }; 508 509 extern struct kobject *acpi_kobj; 510 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); 511 void acpi_bus_private_data_handler(acpi_handle, void *); 512 int acpi_bus_get_private_data(acpi_handle, void **); 513 int acpi_bus_attach_private_data(acpi_handle, void *); 514 void acpi_bus_detach_private_data(acpi_handle); 515 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); 516 extern int register_acpi_notifier(struct notifier_block *); 517 extern int unregister_acpi_notifier(struct notifier_block *); 518 519 /* 520 * External Functions 521 */ 522 523 acpi_status acpi_bus_get_status_handle(acpi_handle handle, 524 unsigned long long *sta); 525 int acpi_bus_get_status(struct acpi_device *device); 526 527 int acpi_bus_set_power(acpi_handle handle, int state); 528 const char *acpi_power_state_string(int state); 529 int acpi_device_set_power(struct acpi_device *device, int state); 530 int acpi_bus_init_power(struct acpi_device *device); 531 int acpi_device_fix_up_power(struct acpi_device *device); 532 void acpi_device_fix_up_power_extended(struct acpi_device *adev); 533 int acpi_bus_update_power(acpi_handle handle, int *state_p); 534 int acpi_device_update_power(struct acpi_device *device, int *state_p); 535 bool acpi_bus_power_manageable(acpi_handle handle); 536 void acpi_dev_power_up_children_with_adr(struct acpi_device *adev); 537 u8 acpi_dev_power_state_for_wake(struct acpi_device *adev); 538 int acpi_device_power_add_dependent(struct acpi_device *adev, 539 struct device *dev); 540 void acpi_device_power_remove_dependent(struct acpi_device *adev, 541 struct device *dev); 542 543 #ifdef CONFIG_PM 544 bool acpi_bus_can_wakeup(acpi_handle handle); 545 #else 546 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } 547 #endif 548 549 void acpi_scan_lock_acquire(void); 550 void acpi_scan_lock_release(void); 551 void acpi_lock_hp_context(void); 552 void acpi_unlock_hp_context(void); 553 int acpi_scan_add_handler(struct acpi_scan_handler *handler); 554 int acpi_bus_register_driver(struct acpi_driver *driver); 555 void acpi_bus_unregister_driver(struct acpi_driver *driver); 556 int acpi_bus_scan(acpi_handle handle); 557 void acpi_bus_trim(struct acpi_device *start); 558 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); 559 int acpi_match_device_ids(struct acpi_device *device, 560 const struct acpi_device_id *ids); 561 void acpi_set_modalias(struct acpi_device *adev, const char *default_id, 562 char *modalias, size_t len); 563 int acpi_create_dir(struct acpi_device *); 564 void acpi_remove_dir(struct acpi_device *); 565 566 static inline bool acpi_device_enumerated(struct acpi_device *adev) 567 { 568 return adev && adev->flags.initialized && adev->flags.visited; 569 } 570 571 /** 572 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver 573 * @__acpi_driver: acpi_driver struct 574 * 575 * Helper macro for ACPI drivers which do not do anything special in module 576 * init/exit. This eliminates a lot of boilerplate. Each module may only 577 * use this macro once, and calling it replaces module_init() and module_exit() 578 */ 579 #define module_acpi_driver(__acpi_driver) \ 580 module_driver(__acpi_driver, acpi_bus_register_driver, \ 581 acpi_bus_unregister_driver) 582 583 /* 584 * Bind physical devices with ACPI devices 585 */ 586 struct acpi_bus_type { 587 struct list_head list; 588 const char *name; 589 bool (*match)(struct device *dev); 590 struct acpi_device * (*find_companion)(struct device *); 591 void (*setup)(struct device *); 592 }; 593 int register_acpi_bus_type(struct acpi_bus_type *); 594 int unregister_acpi_bus_type(struct acpi_bus_type *); 595 int acpi_bind_one(struct device *dev, struct acpi_device *adev); 596 int acpi_unbind_one(struct device *dev); 597 598 enum acpi_bridge_type { 599 ACPI_BRIDGE_TYPE_PCIE = 1, 600 ACPI_BRIDGE_TYPE_CXL, 601 }; 602 603 struct acpi_pci_root { 604 struct acpi_device * device; 605 struct pci_bus *bus; 606 u16 segment; 607 int bridge_type; 608 struct resource secondary; /* downstream bus range */ 609 610 u32 osc_support_set; /* _OSC state of support bits */ 611 u32 osc_control_set; /* _OSC state of control bits */ 612 u32 osc_ext_support_set; /* _OSC state of extended support bits */ 613 u32 osc_ext_control_set; /* _OSC state of extended control bits */ 614 phys_addr_t mcfg_addr; 615 }; 616 617 /* helper */ 618 619 bool acpi_dma_supported(const struct acpi_device *adev); 620 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev); 621 int acpi_iommu_fwspec_init(struct device *dev, u32 id, 622 struct fwnode_handle *fwnode, 623 const struct iommu_ops *ops); 624 int acpi_dma_get_range(struct device *dev, const struct bus_dma_region **map); 625 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr, 626 const u32 *input_id); 627 static inline int acpi_dma_configure(struct device *dev, 628 enum dev_dma_attr attr) 629 { 630 return acpi_dma_configure_id(dev, attr, NULL); 631 } 632 struct acpi_device *acpi_find_child_device(struct acpi_device *parent, 633 u64 address, bool check_children); 634 struct acpi_device *acpi_find_child_by_adr(struct acpi_device *adev, 635 acpi_bus_address adr); 636 int acpi_is_root_bridge(acpi_handle); 637 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); 638 639 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state); 640 int acpi_disable_wakeup_device_power(struct acpi_device *dev); 641 642 #ifdef CONFIG_X86 643 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status); 644 bool acpi_quirk_skip_acpi_ac_and_battery(void); 645 #else 646 static inline bool acpi_device_override_status(struct acpi_device *adev, 647 unsigned long long *status) 648 { 649 return false; 650 } 651 static inline bool acpi_quirk_skip_acpi_ac_and_battery(void) 652 { 653 return false; 654 } 655 #endif 656 657 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS) 658 bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev); 659 int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip); 660 bool acpi_quirk_skip_gpio_event_handlers(void); 661 #else 662 static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev) 663 { 664 return false; 665 } 666 static inline int 667 acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip) 668 { 669 *skip = false; 670 return 0; 671 } 672 static inline bool acpi_quirk_skip_gpio_event_handlers(void) 673 { 674 return false; 675 } 676 #endif 677 678 #ifdef CONFIG_PM 679 void acpi_pm_wakeup_event(struct device *dev); 680 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev, 681 void (*func)(struct acpi_device_wakeup_context *context)); 682 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev); 683 bool acpi_pm_device_can_wakeup(struct device *dev); 684 int acpi_pm_device_sleep_state(struct device *, int *, int); 685 int acpi_pm_set_device_wakeup(struct device *dev, bool enable); 686 #else 687 static inline void acpi_pm_wakeup_event(struct device *dev) 688 { 689 } 690 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev, 691 struct device *dev, 692 void (*func)(struct acpi_device_wakeup_context *context)) 693 { 694 return AE_SUPPORT; 695 } 696 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev) 697 { 698 return AE_SUPPORT; 699 } 700 static inline bool acpi_pm_device_can_wakeup(struct device *dev) 701 { 702 return false; 703 } 704 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m) 705 { 706 if (p) 707 *p = ACPI_STATE_D0; 708 709 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ? 710 m : ACPI_STATE_D0; 711 } 712 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable) 713 { 714 return -ENODEV; 715 } 716 #endif 717 718 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT 719 bool acpi_sleep_state_supported(u8 sleep_state); 720 #else 721 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; } 722 #endif 723 724 #ifdef CONFIG_ACPI_SLEEP 725 u32 acpi_target_system_state(void); 726 #else 727 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; } 728 #endif 729 730 static inline bool acpi_device_power_manageable(struct acpi_device *adev) 731 { 732 return adev->flags.power_manageable; 733 } 734 735 static inline bool acpi_device_can_wakeup(struct acpi_device *adev) 736 { 737 return adev->wakeup.flags.valid; 738 } 739 740 static inline bool acpi_device_can_poweroff(struct acpi_device *adev) 741 { 742 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid || 743 ((acpi_gbl_FADT.header.revision < 6) && 744 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set); 745 } 746 747 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2); 748 int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer); 749 750 void acpi_dev_clear_dependencies(struct acpi_device *supplier); 751 bool acpi_dev_ready_for_enumeration(const struct acpi_device *device); 752 struct acpi_device *acpi_dev_get_next_consumer_dev(struct acpi_device *supplier, 753 struct acpi_device *start); 754 755 /** 756 * for_each_acpi_consumer_dev - iterate over the consumer ACPI devices for a 757 * given supplier 758 * @supplier: Pointer to the supplier's ACPI device 759 * @consumer: Pointer to &struct acpi_device to hold the consumer, initially NULL 760 */ 761 #define for_each_acpi_consumer_dev(supplier, consumer) \ 762 for (consumer = acpi_dev_get_next_consumer_dev(supplier, NULL); \ 763 consumer; \ 764 consumer = acpi_dev_get_next_consumer_dev(supplier, consumer)) 765 766 struct acpi_device * 767 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv); 768 struct acpi_device * 769 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv); 770 771 /** 772 * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria 773 * @adev: pointer to the matching ACPI device, NULL at the end of the loop 774 * @hid: Hardware ID of the device. 775 * @uid: Unique ID of the device, pass NULL to not check _UID 776 * @hrv: Hardware Revision of the device, pass -1 to not check _HRV 777 * 778 * The caller is responsible for invoking acpi_dev_put() on the returned device. 779 */ 780 #define for_each_acpi_dev_match(adev, hid, uid, hrv) \ 781 for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \ 782 adev; \ 783 adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv)) 784 785 static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev) 786 { 787 return adev ? to_acpi_device(get_device(&adev->dev)) : NULL; 788 } 789 790 static inline void acpi_dev_put(struct acpi_device *adev) 791 { 792 if (adev) 793 put_device(&adev->dev); 794 } 795 796 struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle); 797 struct acpi_device *acpi_get_acpi_dev(acpi_handle handle); 798 799 static inline void acpi_put_acpi_dev(struct acpi_device *adev) 800 { 801 acpi_dev_put(adev); 802 } 803 #else /* CONFIG_ACPI */ 804 805 static inline int register_acpi_bus_type(void *bus) { return 0; } 806 static inline int unregister_acpi_bus_type(void *bus) { return 0; } 807 808 #endif /* CONFIG_ACPI */ 809 810 #endif /*__ACPI_BUS_H__*/ 811