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 struct acpi_handle_list { 16 u32 count; 17 acpi_handle* handles; 18 }; 19 20 /* acpi_utils.h */ 21 acpi_status 22 acpi_extract_package(union acpi_object *package, 23 struct acpi_buffer *format, struct acpi_buffer *buffer); 24 acpi_status 25 acpi_evaluate_integer(acpi_handle handle, 26 acpi_string pathname, 27 struct acpi_object_list *arguments, unsigned long long *data); 28 acpi_status 29 acpi_evaluate_reference(acpi_handle handle, 30 acpi_string pathname, 31 struct acpi_object_list *arguments, 32 struct acpi_handle_list *list); 33 bool acpi_handle_list_equal(struct acpi_handle_list *list1, 34 struct acpi_handle_list *list2); 35 void acpi_handle_list_replace(struct acpi_handle_list *dst, 36 struct acpi_handle_list *src); 37 void acpi_handle_list_free(struct acpi_handle_list *list); 38 acpi_status 39 acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code, 40 struct acpi_buffer *status_buf); 41 42 acpi_status 43 acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld); 44 45 bool acpi_has_method(acpi_handle handle, char *name); 46 acpi_status acpi_execute_simple_method(acpi_handle handle, char *method, 47 u64 arg); 48 acpi_status acpi_evaluate_ej0(acpi_handle handle); 49 acpi_status acpi_evaluate_lck(acpi_handle handle, int lock); 50 acpi_status acpi_evaluate_reg(acpi_handle handle, u8 space_id, u32 function); 51 bool acpi_ata_match(acpi_handle handle); 52 bool acpi_bay_match(acpi_handle handle); 53 bool acpi_dock_match(acpi_handle handle); 54 55 bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs); 56 union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid, 57 u64 rev, u64 func, union acpi_object *argv4); 58 #ifdef CONFIG_ACPI 59 static inline union acpi_object * 60 acpi_evaluate_dsm_typed(acpi_handle handle, const guid_t *guid, u64 rev, 61 u64 func, union acpi_object *argv4, 62 acpi_object_type type) 63 { 64 union acpi_object *obj; 65 66 obj = acpi_evaluate_dsm(handle, guid, rev, func, argv4); 67 if (obj && obj->type != type) { 68 ACPI_FREE(obj); 69 obj = NULL; 70 } 71 72 return obj; 73 } 74 #endif 75 76 #define ACPI_INIT_DSM_ARGV4(cnt, eles) \ 77 { \ 78 .package.type = ACPI_TYPE_PACKAGE, \ 79 .package.count = (cnt), \ 80 .package.elements = (eles) \ 81 } 82 83 bool acpi_dev_found(const char *hid); 84 bool acpi_dev_present(const char *hid, const char *uid, s64 hrv); 85 bool acpi_reduced_hardware(void); 86 87 #ifdef CONFIG_ACPI 88 89 struct proc_dir_entry; 90 91 #define ACPI_BUS_FILE_ROOT "acpi" 92 extern struct proc_dir_entry *acpi_root_dir; 93 94 enum acpi_bus_device_type { 95 ACPI_BUS_TYPE_DEVICE = 0, 96 ACPI_BUS_TYPE_POWER, 97 ACPI_BUS_TYPE_PROCESSOR, 98 ACPI_BUS_TYPE_THERMAL, 99 ACPI_BUS_TYPE_POWER_BUTTON, 100 ACPI_BUS_TYPE_SLEEP_BUTTON, 101 ACPI_BUS_TYPE_ECDT_EC, 102 ACPI_BUS_DEVICE_TYPE_COUNT 103 }; 104 105 struct acpi_driver; 106 struct acpi_device; 107 108 /* 109 * ACPI Scan Handler 110 * ----------------- 111 */ 112 113 struct acpi_hotplug_profile { 114 struct kobject kobj; 115 int (*scan_dependent)(struct acpi_device *adev); 116 void (*notify_online)(struct acpi_device *adev); 117 bool enabled:1; 118 bool demand_offline:1; 119 }; 120 121 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile( 122 struct kobject *kobj) 123 { 124 return container_of(kobj, struct acpi_hotplug_profile, kobj); 125 } 126 127 struct acpi_scan_handler { 128 const struct acpi_device_id *ids; 129 struct list_head list_node; 130 bool (*match)(const char *idstr, const struct acpi_device_id **matchid); 131 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id); 132 void (*detach)(struct acpi_device *dev); 133 void (*bind)(struct device *phys_dev); 134 void (*unbind)(struct device *phys_dev); 135 struct acpi_hotplug_profile hotplug; 136 }; 137 138 /* 139 * ACPI Hotplug Context 140 * -------------------- 141 */ 142 143 struct acpi_hotplug_context { 144 struct acpi_device *self; 145 int (*notify)(struct acpi_device *, u32); 146 void (*uevent)(struct acpi_device *, u32); 147 void (*fixup)(struct acpi_device *); 148 }; 149 150 /* 151 * ACPI Driver 152 * ----------- 153 */ 154 155 typedef int (*acpi_op_add) (struct acpi_device * device); 156 typedef void (*acpi_op_remove) (struct acpi_device *device); 157 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event); 158 159 struct acpi_device_ops { 160 acpi_op_add add; 161 acpi_op_remove remove; 162 acpi_op_notify notify; 163 }; 164 165 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */ 166 167 struct acpi_driver { 168 char name[80]; 169 char class[80]; 170 const struct acpi_device_id *ids; /* Supported Hardware IDs */ 171 unsigned int flags; 172 struct acpi_device_ops ops; 173 struct device_driver drv; 174 struct module *owner; 175 }; 176 177 /* 178 * ACPI Device 179 * ----------- 180 */ 181 182 /* Status (_STA) */ 183 184 struct acpi_device_status { 185 u32 present:1; 186 u32 enabled:1; 187 u32 show_in_ui:1; 188 u32 functional:1; 189 u32 battery_present:1; 190 u32 reserved:27; 191 }; 192 193 /* Flags */ 194 195 struct acpi_device_flags { 196 u32 dynamic_status:1; 197 u32 removable:1; 198 u32 ejectable:1; 199 u32 power_manageable:1; 200 u32 match_driver:1; 201 u32 initialized:1; 202 u32 visited:1; 203 u32 hotplug_notify:1; 204 u32 is_dock_station:1; 205 u32 of_compatible_ok:1; 206 u32 coherent_dma:1; 207 u32 cca_seen:1; 208 u32 enumeration_by_parent:1; 209 u32 honor_deps:1; 210 u32 reserved:18; 211 }; 212 213 /* File System */ 214 215 struct acpi_device_dir { 216 struct proc_dir_entry *entry; 217 }; 218 219 #define acpi_device_dir(d) ((d)->dir.entry) 220 221 /* Plug and Play */ 222 223 typedef char acpi_bus_id[8]; 224 typedef u64 acpi_bus_address; 225 typedef char acpi_device_name[40]; 226 typedef char acpi_device_class[20]; 227 228 struct acpi_hardware_id { 229 struct list_head list; 230 const char *id; 231 }; 232 233 struct acpi_pnp_type { 234 u32 hardware_id:1; 235 u32 bus_address:1; 236 u32 platform_id:1; 237 u32 backlight:1; 238 u32 reserved:28; 239 }; 240 241 struct acpi_device_pnp { 242 acpi_bus_id bus_id; /* Object name */ 243 int instance_no; /* Instance number of this object */ 244 struct acpi_pnp_type type; /* ID type */ 245 acpi_bus_address bus_address; /* _ADR */ 246 char *unique_id; /* _UID */ 247 struct list_head ids; /* _HID and _CIDs */ 248 acpi_device_name device_name; /* Driver-determined */ 249 acpi_device_class device_class; /* " */ 250 union acpi_object *str_obj; /* unicode string for _STR method */ 251 }; 252 253 #define acpi_device_bid(d) ((d)->pnp.bus_id) 254 #define acpi_device_adr(d) ((d)->pnp.bus_address) 255 const char *acpi_device_hid(struct acpi_device *device); 256 #define acpi_device_uid(d) ((d)->pnp.unique_id) 257 #define acpi_device_name(d) ((d)->pnp.device_name) 258 #define acpi_device_class(d) ((d)->pnp.device_class) 259 260 /* Power Management */ 261 262 struct acpi_device_power_flags { 263 u32 explicit_get:1; /* _PSC present? */ 264 u32 power_resources:1; /* Power resources */ 265 u32 inrush_current:1; /* Serialize Dx->D0 */ 266 u32 power_removed:1; /* Optimize Dx->D0 */ 267 u32 ignore_parent:1; /* Power is independent of parent power state */ 268 u32 dsw_present:1; /* _DSW present? */ 269 u32 reserved:26; 270 }; 271 272 struct acpi_device_power_state { 273 struct { 274 u8 valid:1; 275 u8 explicit_set:1; /* _PSx present? */ 276 u8 reserved:6; 277 } flags; 278 int power; /* % Power (compared to D0) */ 279 int latency; /* Dx->D0 time (microseconds) */ 280 struct list_head resources; /* Power resources referenced */ 281 }; 282 283 struct acpi_device_power { 284 int state; /* Current state */ 285 struct acpi_device_power_flags flags; 286 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */ 287 u8 state_for_enumeration; /* Deepest power state for enumeration */ 288 }; 289 290 struct acpi_dep_data { 291 struct list_head node; 292 acpi_handle supplier; 293 acpi_handle consumer; 294 bool honor_dep; 295 bool met; 296 bool free_when_met; 297 }; 298 299 /* Performance Management */ 300 301 struct acpi_device_perf_flags { 302 u8 reserved:8; 303 }; 304 305 struct acpi_device_perf_state { 306 struct { 307 u8 valid:1; 308 u8 reserved:7; 309 } flags; 310 u8 power; /* % Power (compared to P0) */ 311 u8 performance; /* % Performance ( " ) */ 312 int latency; /* Px->P0 time (microseconds) */ 313 }; 314 315 struct acpi_device_perf { 316 int state; 317 struct acpi_device_perf_flags flags; 318 int state_count; 319 struct acpi_device_perf_state *states; 320 }; 321 322 /* Wakeup Management */ 323 struct acpi_device_wakeup_flags { 324 u8 valid:1; /* Can successfully enable wakeup? */ 325 u8 notifier_present:1; /* Wake-up notify handler has been installed */ 326 }; 327 328 struct acpi_device_wakeup_context { 329 void (*func)(struct acpi_device_wakeup_context *context); 330 struct device *dev; 331 }; 332 333 struct acpi_device_wakeup { 334 acpi_handle gpe_device; 335 u64 gpe_number; 336 u64 sleep_state; 337 struct list_head resources; 338 struct acpi_device_wakeup_flags flags; 339 struct acpi_device_wakeup_context context; 340 struct wakeup_source *ws; 341 int prepare_count; 342 int enable_count; 343 }; 344 345 struct acpi_device_physical_node { 346 unsigned int node_id; 347 struct list_head node; 348 struct device *dev; 349 bool put_online:1; 350 }; 351 352 struct acpi_device_properties { 353 const guid_t *guid; 354 union acpi_object *properties; 355 struct list_head list; 356 void **bufs; 357 }; 358 359 /* ACPI Device Specific Data (_DSD) */ 360 struct acpi_device_data { 361 const union acpi_object *pointer; 362 struct list_head properties; 363 const union acpi_object *of_compatible; 364 struct list_head subnodes; 365 }; 366 367 struct acpi_gpio_mapping; 368 369 /* Device */ 370 struct acpi_device { 371 u32 pld_crc; 372 int device_type; 373 acpi_handle handle; /* no handle for fixed hardware */ 374 struct fwnode_handle fwnode; 375 struct list_head wakeup_list; 376 struct list_head del_list; 377 struct acpi_device_status status; 378 struct acpi_device_flags flags; 379 struct acpi_device_pnp pnp; 380 struct acpi_device_power power; 381 struct acpi_device_wakeup wakeup; 382 struct acpi_device_perf performance; 383 struct acpi_device_dir dir; 384 struct acpi_device_data data; 385 struct acpi_scan_handler *handler; 386 struct acpi_hotplug_context *hp; 387 const struct acpi_gpio_mapping *driver_gpios; 388 void *driver_data; 389 struct device dev; 390 unsigned int physical_node_count; 391 unsigned int dep_unmet; 392 struct list_head physical_node_list; 393 struct mutex physical_node_lock; 394 void (*remove)(struct acpi_device *); 395 }; 396 397 /* Non-device subnode */ 398 struct acpi_data_node { 399 const char *name; 400 acpi_handle handle; 401 struct fwnode_handle fwnode; 402 struct fwnode_handle *parent; 403 struct acpi_device_data data; 404 struct list_head sibling; 405 struct kobject kobj; 406 struct completion kobj_done; 407 }; 408 409 extern const struct fwnode_operations acpi_device_fwnode_ops; 410 extern const struct fwnode_operations acpi_data_fwnode_ops; 411 extern const struct fwnode_operations acpi_static_fwnode_ops; 412 413 bool is_acpi_device_node(const struct fwnode_handle *fwnode); 414 bool is_acpi_data_node(const struct fwnode_handle *fwnode); 415 416 static inline bool is_acpi_node(const struct fwnode_handle *fwnode) 417 { 418 return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode)); 419 } 420 421 #define to_acpi_device_node(__fwnode) \ 422 ({ \ 423 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \ 424 \ 425 is_acpi_device_node(__to_acpi_device_node_fwnode) ? \ 426 container_of(__to_acpi_device_node_fwnode, \ 427 struct acpi_device, fwnode) : \ 428 NULL; \ 429 }) 430 431 #define to_acpi_data_node(__fwnode) \ 432 ({ \ 433 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \ 434 \ 435 is_acpi_data_node(__to_acpi_data_node_fwnode) ? \ 436 container_of(__to_acpi_data_node_fwnode, \ 437 struct acpi_data_node, fwnode) : \ 438 NULL; \ 439 }) 440 441 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode) 442 { 443 return !IS_ERR_OR_NULL(fwnode) && 444 fwnode->ops == &acpi_static_fwnode_ops; 445 } 446 447 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode, 448 const char *name) 449 { 450 return is_acpi_data_node(fwnode) ? 451 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false; 452 } 453 454 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev) 455 { 456 return &adev->fwnode; 457 } 458 459 static inline void *acpi_driver_data(struct acpi_device *d) 460 { 461 return d->driver_data; 462 } 463 464 #define to_acpi_device(d) container_of(d, struct acpi_device, dev) 465 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) 466 467 static inline struct acpi_device *acpi_dev_parent(struct acpi_device *adev) 468 { 469 if (adev->dev.parent) 470 return to_acpi_device(adev->dev.parent); 471 472 return NULL; 473 } 474 475 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) 476 { 477 *((u32 *)&adev->status) = sta; 478 } 479 480 static inline void acpi_set_hp_context(struct acpi_device *adev, 481 struct acpi_hotplug_context *hp) 482 { 483 hp->self = adev; 484 adev->hp = hp; 485 } 486 487 void acpi_initialize_hp_context(struct acpi_device *adev, 488 struct acpi_hotplug_context *hp, 489 int (*notify)(struct acpi_device *, u32), 490 void (*uevent)(struct acpi_device *, u32)); 491 492 /* acpi_device.dev.bus == &acpi_bus_type */ 493 extern struct bus_type acpi_bus_type; 494 495 int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data); 496 int acpi_dev_for_each_child(struct acpi_device *adev, 497 int (*fn)(struct acpi_device *, void *), void *data); 498 int acpi_dev_for_each_child_reverse(struct acpi_device *adev, 499 int (*fn)(struct acpi_device *, void *), 500 void *data); 501 502 /* 503 * Events 504 * ------ 505 */ 506 507 struct acpi_bus_event { 508 struct list_head node; 509 acpi_device_class device_class; 510 acpi_bus_id bus_id; 511 u32 type; 512 u32 data; 513 }; 514 515 extern struct kobject *acpi_kobj; 516 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); 517 void acpi_bus_private_data_handler(acpi_handle, void *); 518 int acpi_bus_get_private_data(acpi_handle, void **); 519 int acpi_bus_attach_private_data(acpi_handle, void *); 520 void acpi_bus_detach_private_data(acpi_handle); 521 int acpi_dev_install_notify_handler(struct acpi_device *adev, 522 u32 handler_type, 523 acpi_notify_handler handler, void *context); 524 void acpi_dev_remove_notify_handler(struct acpi_device *adev, 525 u32 handler_type, 526 acpi_notify_handler handler); 527 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); 528 extern int register_acpi_notifier(struct notifier_block *); 529 extern int unregister_acpi_notifier(struct notifier_block *); 530 531 /* 532 * External Functions 533 */ 534 535 acpi_status acpi_bus_get_status_handle(acpi_handle handle, 536 unsigned long long *sta); 537 int acpi_bus_get_status(struct acpi_device *device); 538 539 int acpi_bus_set_power(acpi_handle handle, int state); 540 const char *acpi_power_state_string(int state); 541 int acpi_device_set_power(struct acpi_device *device, int state); 542 int acpi_bus_init_power(struct acpi_device *device); 543 int acpi_device_fix_up_power(struct acpi_device *device); 544 void acpi_device_fix_up_power_extended(struct acpi_device *adev); 545 int acpi_bus_update_power(acpi_handle handle, int *state_p); 546 int acpi_device_update_power(struct acpi_device *device, int *state_p); 547 bool acpi_bus_power_manageable(acpi_handle handle); 548 void acpi_dev_power_up_children_with_adr(struct acpi_device *adev); 549 u8 acpi_dev_power_state_for_wake(struct acpi_device *adev); 550 int acpi_device_power_add_dependent(struct acpi_device *adev, 551 struct device *dev); 552 void acpi_device_power_remove_dependent(struct acpi_device *adev, 553 struct device *dev); 554 555 #ifdef CONFIG_PM 556 bool acpi_bus_can_wakeup(acpi_handle handle); 557 #else 558 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } 559 #endif 560 561 void acpi_scan_lock_acquire(void); 562 void acpi_scan_lock_release(void); 563 void acpi_lock_hp_context(void); 564 void acpi_unlock_hp_context(void); 565 int acpi_scan_add_handler(struct acpi_scan_handler *handler); 566 int acpi_bus_register_driver(struct acpi_driver *driver); 567 void acpi_bus_unregister_driver(struct acpi_driver *driver); 568 int acpi_bus_scan(acpi_handle handle); 569 void acpi_bus_trim(struct acpi_device *start); 570 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); 571 int acpi_match_device_ids(struct acpi_device *device, 572 const struct acpi_device_id *ids); 573 void acpi_set_modalias(struct acpi_device *adev, const char *default_id, 574 char *modalias, size_t len); 575 576 static inline bool acpi_device_enumerated(struct acpi_device *adev) 577 { 578 return adev && adev->flags.initialized && adev->flags.visited; 579 } 580 581 /** 582 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver 583 * @__acpi_driver: acpi_driver struct 584 * 585 * Helper macro for ACPI drivers which do not do anything special in module 586 * init/exit. This eliminates a lot of boilerplate. Each module may only 587 * use this macro once, and calling it replaces module_init() and module_exit() 588 */ 589 #define module_acpi_driver(__acpi_driver) \ 590 module_driver(__acpi_driver, acpi_bus_register_driver, \ 591 acpi_bus_unregister_driver) 592 593 /* 594 * Bind physical devices with ACPI devices 595 */ 596 struct acpi_bus_type { 597 struct list_head list; 598 const char *name; 599 bool (*match)(struct device *dev); 600 struct acpi_device * (*find_companion)(struct device *); 601 void (*setup)(struct device *); 602 }; 603 int register_acpi_bus_type(struct acpi_bus_type *); 604 int unregister_acpi_bus_type(struct acpi_bus_type *); 605 int acpi_bind_one(struct device *dev, struct acpi_device *adev); 606 int acpi_unbind_one(struct device *dev); 607 608 enum acpi_bridge_type { 609 ACPI_BRIDGE_TYPE_PCIE = 1, 610 ACPI_BRIDGE_TYPE_CXL, 611 }; 612 613 struct acpi_pci_root { 614 struct acpi_device * device; 615 struct pci_bus *bus; 616 u16 segment; 617 int bridge_type; 618 struct resource secondary; /* downstream bus range */ 619 620 u32 osc_support_set; /* _OSC state of support bits */ 621 u32 osc_control_set; /* _OSC state of control bits */ 622 u32 osc_ext_support_set; /* _OSC state of extended support bits */ 623 u32 osc_ext_control_set; /* _OSC state of extended control bits */ 624 phys_addr_t mcfg_addr; 625 }; 626 627 /* helper */ 628 629 bool acpi_dma_supported(const struct acpi_device *adev); 630 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev); 631 int acpi_iommu_fwspec_init(struct device *dev, u32 id, 632 struct fwnode_handle *fwnode, 633 const struct iommu_ops *ops); 634 int acpi_dma_get_range(struct device *dev, const struct bus_dma_region **map); 635 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr, 636 const u32 *input_id); 637 static inline int acpi_dma_configure(struct device *dev, 638 enum dev_dma_attr attr) 639 { 640 return acpi_dma_configure_id(dev, attr, NULL); 641 } 642 struct acpi_device *acpi_find_child_device(struct acpi_device *parent, 643 u64 address, bool check_children); 644 struct acpi_device *acpi_find_child_by_adr(struct acpi_device *adev, 645 acpi_bus_address adr); 646 int acpi_is_root_bridge(acpi_handle); 647 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); 648 649 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state); 650 int acpi_disable_wakeup_device_power(struct acpi_device *dev); 651 652 #ifdef CONFIG_X86 653 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status); 654 bool acpi_quirk_skip_acpi_ac_and_battery(void); 655 int acpi_install_cmos_rtc_space_handler(acpi_handle handle); 656 void acpi_remove_cmos_rtc_space_handler(acpi_handle handle); 657 #else 658 static inline bool acpi_device_override_status(struct acpi_device *adev, 659 unsigned long long *status) 660 { 661 return false; 662 } 663 static inline bool acpi_quirk_skip_acpi_ac_and_battery(void) 664 { 665 return false; 666 } 667 static inline int acpi_install_cmos_rtc_space_handler(acpi_handle handle) 668 { 669 return 1; 670 } 671 static inline void acpi_remove_cmos_rtc_space_handler(acpi_handle handle) 672 { 673 } 674 #endif 675 676 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS) 677 bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev); 678 int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip); 679 bool acpi_quirk_skip_gpio_event_handlers(void); 680 #else 681 static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev) 682 { 683 return false; 684 } 685 static inline int 686 acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip) 687 { 688 *skip = false; 689 return 0; 690 } 691 static inline bool acpi_quirk_skip_gpio_event_handlers(void) 692 { 693 return false; 694 } 695 #endif 696 697 #ifdef CONFIG_PM 698 void acpi_pm_wakeup_event(struct device *dev); 699 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev, 700 void (*func)(struct acpi_device_wakeup_context *context)); 701 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev); 702 bool acpi_pm_device_can_wakeup(struct device *dev); 703 int acpi_pm_device_sleep_state(struct device *, int *, int); 704 int acpi_pm_set_device_wakeup(struct device *dev, bool enable); 705 #else 706 static inline void acpi_pm_wakeup_event(struct device *dev) 707 { 708 } 709 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev, 710 struct device *dev, 711 void (*func)(struct acpi_device_wakeup_context *context)) 712 { 713 return AE_SUPPORT; 714 } 715 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev) 716 { 717 return AE_SUPPORT; 718 } 719 static inline bool acpi_pm_device_can_wakeup(struct device *dev) 720 { 721 return false; 722 } 723 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m) 724 { 725 if (p) 726 *p = ACPI_STATE_D0; 727 728 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ? 729 m : ACPI_STATE_D0; 730 } 731 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable) 732 { 733 return -ENODEV; 734 } 735 #endif 736 737 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT 738 bool acpi_sleep_state_supported(u8 sleep_state); 739 #else 740 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; } 741 #endif 742 743 #ifdef CONFIG_ACPI_SLEEP 744 u32 acpi_target_system_state(void); 745 #else 746 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; } 747 #endif 748 749 static inline bool acpi_device_power_manageable(struct acpi_device *adev) 750 { 751 return adev->flags.power_manageable; 752 } 753 754 static inline bool acpi_device_can_wakeup(struct acpi_device *adev) 755 { 756 return adev->wakeup.flags.valid; 757 } 758 759 static inline bool acpi_device_can_poweroff(struct acpi_device *adev) 760 { 761 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid || 762 ((acpi_gbl_FADT.header.revision < 6) && 763 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set); 764 } 765 766 bool acpi_dev_uid_match(struct acpi_device *adev, const char *uid2); 767 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2); 768 int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer); 769 770 void acpi_dev_clear_dependencies(struct acpi_device *supplier); 771 bool acpi_dev_ready_for_enumeration(const struct acpi_device *device); 772 struct acpi_device *acpi_dev_get_next_consumer_dev(struct acpi_device *supplier, 773 struct acpi_device *start); 774 775 /** 776 * for_each_acpi_consumer_dev - iterate over the consumer ACPI devices for a 777 * given supplier 778 * @supplier: Pointer to the supplier's ACPI device 779 * @consumer: Pointer to &struct acpi_device to hold the consumer, initially NULL 780 */ 781 #define for_each_acpi_consumer_dev(supplier, consumer) \ 782 for (consumer = acpi_dev_get_next_consumer_dev(supplier, NULL); \ 783 consumer; \ 784 consumer = acpi_dev_get_next_consumer_dev(supplier, consumer)) 785 786 struct acpi_device * 787 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv); 788 struct acpi_device * 789 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv); 790 791 /** 792 * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria 793 * @adev: pointer to the matching ACPI device, NULL at the end of the loop 794 * @hid: Hardware ID of the device. 795 * @uid: Unique ID of the device, pass NULL to not check _UID 796 * @hrv: Hardware Revision of the device, pass -1 to not check _HRV 797 * 798 * The caller is responsible for invoking acpi_dev_put() on the returned device. 799 */ 800 #define for_each_acpi_dev_match(adev, hid, uid, hrv) \ 801 for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \ 802 adev; \ 803 adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv)) 804 805 static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev) 806 { 807 return adev ? to_acpi_device(get_device(&adev->dev)) : NULL; 808 } 809 810 static inline void acpi_dev_put(struct acpi_device *adev) 811 { 812 if (adev) 813 put_device(&adev->dev); 814 } 815 816 struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle); 817 struct acpi_device *acpi_get_acpi_dev(acpi_handle handle); 818 819 static inline void acpi_put_acpi_dev(struct acpi_device *adev) 820 { 821 acpi_dev_put(adev); 822 } 823 #else /* CONFIG_ACPI */ 824 825 static inline int register_acpi_bus_type(void *bus) { return 0; } 826 static inline int unregister_acpi_bus_type(void *bus) { return 0; } 827 828 #endif /* CONFIG_ACPI */ 829 830 #endif /*__ACPI_BUS_H__*/ 831