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 const union acpi_object *properties; 348 struct list_head list; 349 }; 350 351 /* ACPI Device Specific Data (_DSD) */ 352 struct acpi_device_data { 353 const union acpi_object *pointer; 354 struct list_head properties; 355 const union acpi_object *of_compatible; 356 struct list_head subnodes; 357 }; 358 359 struct acpi_gpio_mapping; 360 361 /* Device */ 362 struct acpi_device { 363 u32 pld_crc; 364 int device_type; 365 acpi_handle handle; /* no handle for fixed hardware */ 366 struct fwnode_handle fwnode; 367 struct acpi_device *parent; 368 struct list_head children; 369 struct list_head node; 370 struct list_head wakeup_list; 371 struct list_head del_list; 372 struct acpi_device_status status; 373 struct acpi_device_flags flags; 374 struct acpi_device_pnp pnp; 375 struct acpi_device_power power; 376 struct acpi_device_wakeup wakeup; 377 struct acpi_device_perf performance; 378 struct acpi_device_dir dir; 379 struct acpi_device_data data; 380 struct acpi_scan_handler *handler; 381 struct acpi_hotplug_context *hp; 382 struct acpi_driver *driver; 383 const struct acpi_gpio_mapping *driver_gpios; 384 void *driver_data; 385 struct device dev; 386 unsigned int physical_node_count; 387 unsigned int dep_unmet; 388 struct list_head physical_node_list; 389 struct mutex physical_node_lock; 390 void (*remove)(struct acpi_device *); 391 }; 392 393 /* Non-device subnode */ 394 struct acpi_data_node { 395 const char *name; 396 acpi_handle handle; 397 struct fwnode_handle fwnode; 398 struct fwnode_handle *parent; 399 struct acpi_device_data data; 400 struct list_head sibling; 401 struct kobject kobj; 402 struct completion kobj_done; 403 }; 404 405 extern const struct fwnode_operations acpi_device_fwnode_ops; 406 extern const struct fwnode_operations acpi_data_fwnode_ops; 407 extern const struct fwnode_operations acpi_static_fwnode_ops; 408 409 bool is_acpi_device_node(const struct fwnode_handle *fwnode); 410 bool is_acpi_data_node(const struct fwnode_handle *fwnode); 411 412 static inline bool is_acpi_node(const struct fwnode_handle *fwnode) 413 { 414 return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode)); 415 } 416 417 #define to_acpi_device_node(__fwnode) \ 418 ({ \ 419 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \ 420 \ 421 is_acpi_device_node(__to_acpi_device_node_fwnode) ? \ 422 container_of(__to_acpi_device_node_fwnode, \ 423 struct acpi_device, fwnode) : \ 424 NULL; \ 425 }) 426 427 #define to_acpi_data_node(__fwnode) \ 428 ({ \ 429 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \ 430 \ 431 is_acpi_data_node(__to_acpi_data_node_fwnode) ? \ 432 container_of(__to_acpi_data_node_fwnode, \ 433 struct acpi_data_node, fwnode) : \ 434 NULL; \ 435 }) 436 437 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode) 438 { 439 return !IS_ERR_OR_NULL(fwnode) && 440 fwnode->ops == &acpi_static_fwnode_ops; 441 } 442 443 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode, 444 const char *name) 445 { 446 return is_acpi_data_node(fwnode) ? 447 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false; 448 } 449 450 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev) 451 { 452 return &adev->fwnode; 453 } 454 455 static inline void *acpi_driver_data(struct acpi_device *d) 456 { 457 return d->driver_data; 458 } 459 460 #define to_acpi_device(d) container_of(d, struct acpi_device, dev) 461 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) 462 463 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) 464 { 465 *((u32 *)&adev->status) = sta; 466 } 467 468 static inline void acpi_set_hp_context(struct acpi_device *adev, 469 struct acpi_hotplug_context *hp) 470 { 471 hp->self = adev; 472 adev->hp = hp; 473 } 474 475 void acpi_initialize_hp_context(struct acpi_device *adev, 476 struct acpi_hotplug_context *hp, 477 int (*notify)(struct acpi_device *, u32), 478 void (*uevent)(struct acpi_device *, u32)); 479 480 /* acpi_device.dev.bus == &acpi_bus_type */ 481 extern struct bus_type acpi_bus_type; 482 483 int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data); 484 485 /* 486 * Events 487 * ------ 488 */ 489 490 struct acpi_bus_event { 491 struct list_head node; 492 acpi_device_class device_class; 493 acpi_bus_id bus_id; 494 u32 type; 495 u32 data; 496 }; 497 498 extern struct kobject *acpi_kobj; 499 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); 500 void acpi_bus_private_data_handler(acpi_handle, void *); 501 int acpi_bus_get_private_data(acpi_handle, void **); 502 int acpi_bus_attach_private_data(acpi_handle, void *); 503 void acpi_bus_detach_private_data(acpi_handle); 504 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); 505 extern int register_acpi_notifier(struct notifier_block *); 506 extern int unregister_acpi_notifier(struct notifier_block *); 507 508 /* 509 * External Functions 510 */ 511 512 struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle); 513 acpi_status acpi_bus_get_status_handle(acpi_handle handle, 514 unsigned long long *sta); 515 int acpi_bus_get_status(struct acpi_device *device); 516 517 int acpi_bus_set_power(acpi_handle handle, int state); 518 const char *acpi_power_state_string(int state); 519 int acpi_device_set_power(struct acpi_device *device, int state); 520 int acpi_bus_init_power(struct acpi_device *device); 521 int acpi_device_fix_up_power(struct acpi_device *device); 522 int acpi_bus_update_power(acpi_handle handle, int *state_p); 523 int acpi_device_update_power(struct acpi_device *device, int *state_p); 524 bool acpi_bus_power_manageable(acpi_handle handle); 525 int acpi_device_power_add_dependent(struct acpi_device *adev, 526 struct device *dev); 527 void acpi_device_power_remove_dependent(struct acpi_device *adev, 528 struct device *dev); 529 530 #ifdef CONFIG_PM 531 bool acpi_bus_can_wakeup(acpi_handle handle); 532 #else 533 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } 534 #endif 535 536 void acpi_scan_lock_acquire(void); 537 void acpi_scan_lock_release(void); 538 void acpi_lock_hp_context(void); 539 void acpi_unlock_hp_context(void); 540 int acpi_scan_add_handler(struct acpi_scan_handler *handler); 541 int acpi_bus_register_driver(struct acpi_driver *driver); 542 void acpi_bus_unregister_driver(struct acpi_driver *driver); 543 int acpi_bus_scan(acpi_handle handle); 544 void acpi_bus_trim(struct acpi_device *start); 545 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); 546 int acpi_match_device_ids(struct acpi_device *device, 547 const struct acpi_device_id *ids); 548 void acpi_set_modalias(struct acpi_device *adev, const char *default_id, 549 char *modalias, size_t len); 550 int acpi_create_dir(struct acpi_device *); 551 void acpi_remove_dir(struct acpi_device *); 552 553 static inline bool acpi_device_enumerated(struct acpi_device *adev) 554 { 555 return adev && adev->flags.initialized && adev->flags.visited; 556 } 557 558 /** 559 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver 560 * @__acpi_driver: acpi_driver struct 561 * 562 * Helper macro for ACPI drivers which do not do anything special in module 563 * init/exit. This eliminates a lot of boilerplate. Each module may only 564 * use this macro once, and calling it replaces module_init() and module_exit() 565 */ 566 #define module_acpi_driver(__acpi_driver) \ 567 module_driver(__acpi_driver, acpi_bus_register_driver, \ 568 acpi_bus_unregister_driver) 569 570 /* 571 * Bind physical devices with ACPI devices 572 */ 573 struct acpi_bus_type { 574 struct list_head list; 575 const char *name; 576 bool (*match)(struct device *dev); 577 struct acpi_device * (*find_companion)(struct device *); 578 void (*setup)(struct device *); 579 }; 580 int register_acpi_bus_type(struct acpi_bus_type *); 581 int unregister_acpi_bus_type(struct acpi_bus_type *); 582 int acpi_bind_one(struct device *dev, struct acpi_device *adev); 583 int acpi_unbind_one(struct device *dev); 584 585 struct acpi_pci_root { 586 struct acpi_device * device; 587 struct pci_bus *bus; 588 u16 segment; 589 struct resource secondary; /* downstream bus range */ 590 591 u32 osc_support_set; /* _OSC state of support bits */ 592 u32 osc_control_set; /* _OSC state of control bits */ 593 phys_addr_t mcfg_addr; 594 }; 595 596 /* helper */ 597 598 bool acpi_dma_supported(const struct acpi_device *adev); 599 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev); 600 int acpi_iommu_fwspec_init(struct device *dev, u32 id, 601 struct fwnode_handle *fwnode, 602 const struct iommu_ops *ops); 603 int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset, 604 u64 *size); 605 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr, 606 const u32 *input_id); 607 static inline int acpi_dma_configure(struct device *dev, 608 enum dev_dma_attr attr) 609 { 610 return acpi_dma_configure_id(dev, attr, NULL); 611 } 612 struct acpi_device *acpi_find_child_device(struct acpi_device *parent, 613 u64 address, bool check_children); 614 int acpi_is_root_bridge(acpi_handle); 615 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); 616 617 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state); 618 int acpi_disable_wakeup_device_power(struct acpi_device *dev); 619 620 #ifdef CONFIG_X86 621 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status); 622 bool acpi_quirk_skip_acpi_ac_and_battery(void); 623 #else 624 static inline bool acpi_device_override_status(struct acpi_device *adev, 625 unsigned long long *status) 626 { 627 return false; 628 } 629 static inline bool acpi_quirk_skip_acpi_ac_and_battery(void) 630 { 631 return false; 632 } 633 #endif 634 635 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS) 636 bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev); 637 int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip); 638 #else 639 static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev) 640 { 641 return false; 642 } 643 static inline int 644 acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip) 645 { 646 *skip = false; 647 return 0; 648 } 649 #endif 650 651 #ifdef CONFIG_PM 652 void acpi_pm_wakeup_event(struct device *dev); 653 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev, 654 void (*func)(struct acpi_device_wakeup_context *context)); 655 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev); 656 bool acpi_pm_device_can_wakeup(struct device *dev); 657 int acpi_pm_device_sleep_state(struct device *, int *, int); 658 int acpi_pm_set_device_wakeup(struct device *dev, bool enable); 659 #else 660 static inline void acpi_pm_wakeup_event(struct device *dev) 661 { 662 } 663 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev, 664 struct device *dev, 665 void (*func)(struct acpi_device_wakeup_context *context)) 666 { 667 return AE_SUPPORT; 668 } 669 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev) 670 { 671 return AE_SUPPORT; 672 } 673 static inline bool acpi_pm_device_can_wakeup(struct device *dev) 674 { 675 return false; 676 } 677 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m) 678 { 679 if (p) 680 *p = ACPI_STATE_D0; 681 682 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ? 683 m : ACPI_STATE_D0; 684 } 685 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable) 686 { 687 return -ENODEV; 688 } 689 #endif 690 691 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT 692 bool acpi_sleep_state_supported(u8 sleep_state); 693 #else 694 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; } 695 #endif 696 697 #ifdef CONFIG_ACPI_SLEEP 698 u32 acpi_target_system_state(void); 699 #else 700 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; } 701 #endif 702 703 static inline bool acpi_device_power_manageable(struct acpi_device *adev) 704 { 705 return adev->flags.power_manageable; 706 } 707 708 static inline bool acpi_device_can_wakeup(struct acpi_device *adev) 709 { 710 return adev->wakeup.flags.valid; 711 } 712 713 static inline bool acpi_device_can_poweroff(struct acpi_device *adev) 714 { 715 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid || 716 ((acpi_gbl_FADT.header.revision < 6) && 717 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set); 718 } 719 720 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2); 721 722 void acpi_dev_clear_dependencies(struct acpi_device *supplier); 723 bool acpi_dev_ready_for_enumeration(const struct acpi_device *device); 724 struct acpi_device *acpi_dev_get_first_consumer_dev(struct acpi_device *supplier); 725 struct acpi_device * 726 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv); 727 struct acpi_device * 728 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv); 729 730 /** 731 * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria 732 * @adev: pointer to the matching ACPI device, NULL at the end of the loop 733 * @hid: Hardware ID of the device. 734 * @uid: Unique ID of the device, pass NULL to not check _UID 735 * @hrv: Hardware Revision of the device, pass -1 to not check _HRV 736 * 737 * The caller is responsible for invoking acpi_dev_put() on the returned device. 738 */ 739 #define for_each_acpi_dev_match(adev, hid, uid, hrv) \ 740 for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \ 741 adev; \ 742 adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv)) 743 744 static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev) 745 { 746 return adev ? to_acpi_device(get_device(&adev->dev)) : NULL; 747 } 748 749 static inline void acpi_dev_put(struct acpi_device *adev) 750 { 751 if (adev) 752 put_device(&adev->dev); 753 } 754 755 struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle); 756 757 static inline void acpi_bus_put_acpi_device(struct acpi_device *adev) 758 { 759 acpi_dev_put(adev); 760 } 761 #else /* CONFIG_ACPI */ 762 763 static inline int register_acpi_bus_type(void *bus) { return 0; } 764 static inline int unregister_acpi_bus_type(void *bus) { return 0; } 765 766 #endif /* CONFIG_ACPI */ 767 768 #endif /*__ACPI_BUS_H__*/ 769