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 list_head wakeup_list; 369 struct list_head del_list; 370 struct acpi_device_status status; 371 struct acpi_device_flags flags; 372 struct acpi_device_pnp pnp; 373 struct acpi_device_power power; 374 struct acpi_device_wakeup wakeup; 375 struct acpi_device_perf performance; 376 struct acpi_device_dir dir; 377 struct acpi_device_data data; 378 struct acpi_scan_handler *handler; 379 struct acpi_hotplug_context *hp; 380 const struct acpi_gpio_mapping *driver_gpios; 381 void *driver_data; 382 struct device dev; 383 unsigned int physical_node_count; 384 unsigned int dep_unmet; 385 struct list_head physical_node_list; 386 struct mutex physical_node_lock; 387 void (*remove)(struct acpi_device *); 388 }; 389 390 /* Non-device subnode */ 391 struct acpi_data_node { 392 const char *name; 393 acpi_handle handle; 394 struct fwnode_handle fwnode; 395 struct fwnode_handle *parent; 396 struct acpi_device_data data; 397 struct list_head sibling; 398 struct kobject kobj; 399 struct completion kobj_done; 400 }; 401 402 extern const struct fwnode_operations acpi_device_fwnode_ops; 403 extern const struct fwnode_operations acpi_data_fwnode_ops; 404 extern const struct fwnode_operations acpi_static_fwnode_ops; 405 406 bool is_acpi_device_node(const struct fwnode_handle *fwnode); 407 bool is_acpi_data_node(const struct fwnode_handle *fwnode); 408 409 static inline bool is_acpi_node(const struct fwnode_handle *fwnode) 410 { 411 return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode)); 412 } 413 414 #define to_acpi_device_node(__fwnode) \ 415 ({ \ 416 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \ 417 \ 418 is_acpi_device_node(__to_acpi_device_node_fwnode) ? \ 419 container_of(__to_acpi_device_node_fwnode, \ 420 struct acpi_device, fwnode) : \ 421 NULL; \ 422 }) 423 424 #define to_acpi_data_node(__fwnode) \ 425 ({ \ 426 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \ 427 \ 428 is_acpi_data_node(__to_acpi_data_node_fwnode) ? \ 429 container_of(__to_acpi_data_node_fwnode, \ 430 struct acpi_data_node, fwnode) : \ 431 NULL; \ 432 }) 433 434 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode) 435 { 436 return !IS_ERR_OR_NULL(fwnode) && 437 fwnode->ops == &acpi_static_fwnode_ops; 438 } 439 440 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode, 441 const char *name) 442 { 443 return is_acpi_data_node(fwnode) ? 444 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false; 445 } 446 447 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev) 448 { 449 return &adev->fwnode; 450 } 451 452 static inline void *acpi_driver_data(struct acpi_device *d) 453 { 454 return d->driver_data; 455 } 456 457 #define to_acpi_device(d) container_of(d, struct acpi_device, dev) 458 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) 459 460 static inline struct acpi_device *acpi_dev_parent(struct acpi_device *adev) 461 { 462 if (adev->dev.parent) 463 return to_acpi_device(adev->dev.parent); 464 465 return NULL; 466 } 467 468 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) 469 { 470 *((u32 *)&adev->status) = sta; 471 } 472 473 static inline void acpi_set_hp_context(struct acpi_device *adev, 474 struct acpi_hotplug_context *hp) 475 { 476 hp->self = adev; 477 adev->hp = hp; 478 } 479 480 void acpi_initialize_hp_context(struct acpi_device *adev, 481 struct acpi_hotplug_context *hp, 482 int (*notify)(struct acpi_device *, u32), 483 void (*uevent)(struct acpi_device *, u32)); 484 485 /* acpi_device.dev.bus == &acpi_bus_type */ 486 extern struct bus_type acpi_bus_type; 487 488 int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data); 489 int acpi_dev_for_each_child(struct acpi_device *adev, 490 int (*fn)(struct acpi_device *, void *), void *data); 491 int acpi_dev_for_each_child_reverse(struct acpi_device *adev, 492 int (*fn)(struct acpi_device *, void *), 493 void *data); 494 495 /* 496 * Events 497 * ------ 498 */ 499 500 struct acpi_bus_event { 501 struct list_head node; 502 acpi_device_class device_class; 503 acpi_bus_id bus_id; 504 u32 type; 505 u32 data; 506 }; 507 508 extern struct kobject *acpi_kobj; 509 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); 510 void acpi_bus_private_data_handler(acpi_handle, void *); 511 int acpi_bus_get_private_data(acpi_handle, void **); 512 int acpi_bus_attach_private_data(acpi_handle, void *); 513 void acpi_bus_detach_private_data(acpi_handle); 514 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); 515 extern int register_acpi_notifier(struct notifier_block *); 516 extern int unregister_acpi_notifier(struct notifier_block *); 517 518 /* 519 * External Functions 520 */ 521 522 acpi_status acpi_bus_get_status_handle(acpi_handle handle, 523 unsigned long long *sta); 524 int acpi_bus_get_status(struct acpi_device *device); 525 526 int acpi_bus_set_power(acpi_handle handle, int state); 527 const char *acpi_power_state_string(int state); 528 int acpi_device_set_power(struct acpi_device *device, int state); 529 int acpi_bus_init_power(struct acpi_device *device); 530 int acpi_device_fix_up_power(struct acpi_device *device); 531 void acpi_device_fix_up_power_extended(struct acpi_device *adev); 532 int acpi_bus_update_power(acpi_handle handle, int *state_p); 533 int acpi_device_update_power(struct acpi_device *device, int *state_p); 534 bool acpi_bus_power_manageable(acpi_handle handle); 535 void acpi_dev_power_up_children_with_adr(struct acpi_device *adev); 536 int acpi_device_power_add_dependent(struct acpi_device *adev, 537 struct device *dev); 538 void acpi_device_power_remove_dependent(struct acpi_device *adev, 539 struct device *dev); 540 541 #ifdef CONFIG_PM 542 bool acpi_bus_can_wakeup(acpi_handle handle); 543 #else 544 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } 545 #endif 546 547 void acpi_scan_lock_acquire(void); 548 void acpi_scan_lock_release(void); 549 void acpi_lock_hp_context(void); 550 void acpi_unlock_hp_context(void); 551 int acpi_scan_add_handler(struct acpi_scan_handler *handler); 552 int acpi_bus_register_driver(struct acpi_driver *driver); 553 void acpi_bus_unregister_driver(struct acpi_driver *driver); 554 int acpi_bus_scan(acpi_handle handle); 555 void acpi_bus_trim(struct acpi_device *start); 556 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); 557 int acpi_match_device_ids(struct acpi_device *device, 558 const struct acpi_device_id *ids); 559 void acpi_set_modalias(struct acpi_device *adev, const char *default_id, 560 char *modalias, size_t len); 561 int acpi_create_dir(struct acpi_device *); 562 void acpi_remove_dir(struct acpi_device *); 563 564 static inline bool acpi_device_enumerated(struct acpi_device *adev) 565 { 566 return adev && adev->flags.initialized && adev->flags.visited; 567 } 568 569 /** 570 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver 571 * @__acpi_driver: acpi_driver struct 572 * 573 * Helper macro for ACPI drivers which do not do anything special in module 574 * init/exit. This eliminates a lot of boilerplate. Each module may only 575 * use this macro once, and calling it replaces module_init() and module_exit() 576 */ 577 #define module_acpi_driver(__acpi_driver) \ 578 module_driver(__acpi_driver, acpi_bus_register_driver, \ 579 acpi_bus_unregister_driver) 580 581 /* 582 * Bind physical devices with ACPI devices 583 */ 584 struct acpi_bus_type { 585 struct list_head list; 586 const char *name; 587 bool (*match)(struct device *dev); 588 struct acpi_device * (*find_companion)(struct device *); 589 void (*setup)(struct device *); 590 }; 591 int register_acpi_bus_type(struct acpi_bus_type *); 592 int unregister_acpi_bus_type(struct acpi_bus_type *); 593 int acpi_bind_one(struct device *dev, struct acpi_device *adev); 594 int acpi_unbind_one(struct device *dev); 595 596 enum acpi_bridge_type { 597 ACPI_BRIDGE_TYPE_PCIE = 1, 598 ACPI_BRIDGE_TYPE_CXL, 599 }; 600 601 struct acpi_pci_root { 602 struct acpi_device * device; 603 struct pci_bus *bus; 604 u16 segment; 605 int bridge_type; 606 struct resource secondary; /* downstream bus range */ 607 608 u32 osc_support_set; /* _OSC state of support bits */ 609 u32 osc_control_set; /* _OSC state of control bits */ 610 u32 osc_ext_support_set; /* _OSC state of extended support bits */ 611 u32 osc_ext_control_set; /* _OSC state of extended control bits */ 612 phys_addr_t mcfg_addr; 613 }; 614 615 /* helper */ 616 617 bool acpi_dma_supported(const struct acpi_device *adev); 618 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev); 619 int acpi_iommu_fwspec_init(struct device *dev, u32 id, 620 struct fwnode_handle *fwnode, 621 const struct iommu_ops *ops); 622 int acpi_dma_get_range(struct device *dev, const struct bus_dma_region **map); 623 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr, 624 const u32 *input_id); 625 static inline int acpi_dma_configure(struct device *dev, 626 enum dev_dma_attr attr) 627 { 628 return acpi_dma_configure_id(dev, attr, NULL); 629 } 630 struct acpi_device *acpi_find_child_device(struct acpi_device *parent, 631 u64 address, bool check_children); 632 struct acpi_device *acpi_find_child_by_adr(struct acpi_device *adev, 633 acpi_bus_address adr); 634 int acpi_is_root_bridge(acpi_handle); 635 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); 636 637 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state); 638 int acpi_disable_wakeup_device_power(struct acpi_device *dev); 639 640 #ifdef CONFIG_X86 641 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status); 642 bool acpi_quirk_skip_acpi_ac_and_battery(void); 643 #else 644 static inline bool acpi_device_override_status(struct acpi_device *adev, 645 unsigned long long *status) 646 { 647 return false; 648 } 649 static inline bool acpi_quirk_skip_acpi_ac_and_battery(void) 650 { 651 return false; 652 } 653 #endif 654 655 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS) 656 bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev); 657 int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip); 658 #else 659 static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev) 660 { 661 return false; 662 } 663 static inline int 664 acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip) 665 { 666 *skip = false; 667 return 0; 668 } 669 #endif 670 671 #ifdef CONFIG_PM 672 void acpi_pm_wakeup_event(struct device *dev); 673 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev, 674 void (*func)(struct acpi_device_wakeup_context *context)); 675 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev); 676 bool acpi_pm_device_can_wakeup(struct device *dev); 677 int acpi_pm_device_sleep_state(struct device *, int *, int); 678 int acpi_pm_set_device_wakeup(struct device *dev, bool enable); 679 #else 680 static inline void acpi_pm_wakeup_event(struct device *dev) 681 { 682 } 683 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev, 684 struct device *dev, 685 void (*func)(struct acpi_device_wakeup_context *context)) 686 { 687 return AE_SUPPORT; 688 } 689 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev) 690 { 691 return AE_SUPPORT; 692 } 693 static inline bool acpi_pm_device_can_wakeup(struct device *dev) 694 { 695 return false; 696 } 697 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m) 698 { 699 if (p) 700 *p = ACPI_STATE_D0; 701 702 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ? 703 m : ACPI_STATE_D0; 704 } 705 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable) 706 { 707 return -ENODEV; 708 } 709 #endif 710 711 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT 712 bool acpi_sleep_state_supported(u8 sleep_state); 713 #else 714 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; } 715 #endif 716 717 #ifdef CONFIG_ACPI_SLEEP 718 u32 acpi_target_system_state(void); 719 #else 720 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; } 721 #endif 722 723 static inline bool acpi_device_power_manageable(struct acpi_device *adev) 724 { 725 return adev->flags.power_manageable; 726 } 727 728 static inline bool acpi_device_can_wakeup(struct acpi_device *adev) 729 { 730 return adev->wakeup.flags.valid; 731 } 732 733 static inline bool acpi_device_can_poweroff(struct acpi_device *adev) 734 { 735 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid || 736 ((acpi_gbl_FADT.header.revision < 6) && 737 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set); 738 } 739 740 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2); 741 int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer); 742 743 void acpi_dev_clear_dependencies(struct acpi_device *supplier); 744 bool acpi_dev_ready_for_enumeration(const struct acpi_device *device); 745 struct acpi_device *acpi_dev_get_next_consumer_dev(struct acpi_device *supplier, 746 struct acpi_device *start); 747 748 /** 749 * for_each_acpi_consumer_dev - iterate over the consumer ACPI devices for a 750 * given supplier 751 * @supplier: Pointer to the supplier's ACPI device 752 * @consumer: Pointer to &struct acpi_device to hold the consumer, initially NULL 753 */ 754 #define for_each_acpi_consumer_dev(supplier, consumer) \ 755 for (consumer = acpi_dev_get_next_consumer_dev(supplier, NULL); \ 756 consumer; \ 757 consumer = acpi_dev_get_next_consumer_dev(supplier, consumer)) 758 759 struct acpi_device * 760 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv); 761 struct acpi_device * 762 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv); 763 764 /** 765 * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria 766 * @adev: pointer to the matching ACPI device, NULL at the end of the loop 767 * @hid: Hardware ID of the device. 768 * @uid: Unique ID of the device, pass NULL to not check _UID 769 * @hrv: Hardware Revision of the device, pass -1 to not check _HRV 770 * 771 * The caller is responsible for invoking acpi_dev_put() on the returned device. 772 */ 773 #define for_each_acpi_dev_match(adev, hid, uid, hrv) \ 774 for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \ 775 adev; \ 776 adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv)) 777 778 static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev) 779 { 780 return adev ? to_acpi_device(get_device(&adev->dev)) : NULL; 781 } 782 783 static inline void acpi_dev_put(struct acpi_device *adev) 784 { 785 if (adev) 786 put_device(&adev->dev); 787 } 788 789 struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle); 790 struct acpi_device *acpi_get_acpi_dev(acpi_handle handle); 791 792 static inline void acpi_put_acpi_dev(struct acpi_device *adev) 793 { 794 acpi_dev_put(adev); 795 } 796 #else /* CONFIG_ACPI */ 797 798 static inline int register_acpi_bus_type(void *bus) { return 0; } 799 static inline int unregister_acpi_bus_type(void *bus) { return 0; } 800 801 #endif /* CONFIG_ACPI */ 802 803 #endif /*__ACPI_BUS_H__*/ 804