1 /* 2 * acpi_bus.h - ACPI Bus Driver ($Revision: 22 $) 3 * 4 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> 5 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> 6 * 7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or (at 12 * your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, but 15 * WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * General Public License for more details. 18 * 19 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 20 */ 21 22 #ifndef __ACPI_BUS_H__ 23 #define __ACPI_BUS_H__ 24 25 #include <linux/device.h> 26 #include <linux/property.h> 27 28 /* TBD: Make dynamic */ 29 #define ACPI_MAX_HANDLES 10 30 struct acpi_handle_list { 31 u32 count; 32 acpi_handle handles[ACPI_MAX_HANDLES]; 33 }; 34 35 /* acpi_utils.h */ 36 acpi_status 37 acpi_extract_package(union acpi_object *package, 38 struct acpi_buffer *format, struct acpi_buffer *buffer); 39 acpi_status 40 acpi_evaluate_integer(acpi_handle handle, 41 acpi_string pathname, 42 struct acpi_object_list *arguments, unsigned long long *data); 43 acpi_status 44 acpi_evaluate_reference(acpi_handle handle, 45 acpi_string pathname, 46 struct acpi_object_list *arguments, 47 struct acpi_handle_list *list); 48 acpi_status 49 acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code, 50 struct acpi_buffer *status_buf); 51 52 acpi_status 53 acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld); 54 55 bool acpi_has_method(acpi_handle handle, char *name); 56 acpi_status acpi_execute_simple_method(acpi_handle handle, char *method, 57 u64 arg); 58 acpi_status acpi_evaluate_ej0(acpi_handle handle); 59 acpi_status acpi_evaluate_lck(acpi_handle handle, int lock); 60 bool acpi_ata_match(acpi_handle handle); 61 bool acpi_bay_match(acpi_handle handle); 62 bool acpi_dock_match(acpi_handle handle); 63 64 bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs); 65 union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid, 66 u64 rev, u64 func, union acpi_object *argv4); 67 68 static inline union acpi_object * 69 acpi_evaluate_dsm_typed(acpi_handle handle, const guid_t *guid, u64 rev, 70 u64 func, union acpi_object *argv4, 71 acpi_object_type type) 72 { 73 union acpi_object *obj; 74 75 obj = acpi_evaluate_dsm(handle, guid, rev, func, argv4); 76 if (obj && obj->type != type) { 77 ACPI_FREE(obj); 78 obj = NULL; 79 } 80 81 return obj; 82 } 83 84 #define ACPI_INIT_DSM_ARGV4(cnt, eles) \ 85 { \ 86 .package.type = ACPI_TYPE_PACKAGE, \ 87 .package.count = (cnt), \ 88 .package.elements = (eles) \ 89 } 90 91 bool acpi_dev_found(const char *hid); 92 bool acpi_dev_present(const char *hid, const char *uid, s64 hrv); 93 94 #ifdef CONFIG_ACPI 95 96 #include <linux/proc_fs.h> 97 98 #define ACPI_BUS_FILE_ROOT "acpi" 99 extern struct proc_dir_entry *acpi_root_dir; 100 101 enum acpi_bus_device_type { 102 ACPI_BUS_TYPE_DEVICE = 0, 103 ACPI_BUS_TYPE_POWER, 104 ACPI_BUS_TYPE_PROCESSOR, 105 ACPI_BUS_TYPE_THERMAL, 106 ACPI_BUS_TYPE_POWER_BUTTON, 107 ACPI_BUS_TYPE_SLEEP_BUTTON, 108 ACPI_BUS_TYPE_ECDT_EC, 109 ACPI_BUS_DEVICE_TYPE_COUNT 110 }; 111 112 struct acpi_driver; 113 struct acpi_device; 114 115 /* 116 * ACPI Scan Handler 117 * ----------------- 118 */ 119 120 struct acpi_hotplug_profile { 121 struct kobject kobj; 122 int (*scan_dependent)(struct acpi_device *adev); 123 void (*notify_online)(struct acpi_device *adev); 124 bool enabled:1; 125 bool demand_offline:1; 126 }; 127 128 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile( 129 struct kobject *kobj) 130 { 131 return container_of(kobj, struct acpi_hotplug_profile, kobj); 132 } 133 134 struct acpi_scan_handler { 135 const struct acpi_device_id *ids; 136 struct list_head list_node; 137 bool (*match)(const char *idstr, const struct acpi_device_id **matchid); 138 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id); 139 void (*detach)(struct acpi_device *dev); 140 void (*bind)(struct device *phys_dev); 141 void (*unbind)(struct device *phys_dev); 142 struct acpi_hotplug_profile hotplug; 143 }; 144 145 /* 146 * ACPI Hotplug Context 147 * -------------------- 148 */ 149 150 struct acpi_hotplug_context { 151 struct acpi_device *self; 152 int (*notify)(struct acpi_device *, u32); 153 void (*uevent)(struct acpi_device *, u32); 154 void (*fixup)(struct acpi_device *); 155 }; 156 157 /* 158 * ACPI Driver 159 * ----------- 160 */ 161 162 typedef int (*acpi_op_add) (struct acpi_device * device); 163 typedef int (*acpi_op_remove) (struct acpi_device * device); 164 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event); 165 166 struct acpi_device_ops { 167 acpi_op_add add; 168 acpi_op_remove remove; 169 acpi_op_notify notify; 170 }; 171 172 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */ 173 174 struct acpi_driver { 175 char name[80]; 176 char class[80]; 177 const struct acpi_device_id *ids; /* Supported Hardware IDs */ 178 unsigned int flags; 179 struct acpi_device_ops ops; 180 struct device_driver drv; 181 struct module *owner; 182 }; 183 184 /* 185 * ACPI Device 186 * ----------- 187 */ 188 189 /* Status (_STA) */ 190 191 struct acpi_device_status { 192 u32 present:1; 193 u32 enabled:1; 194 u32 show_in_ui:1; 195 u32 functional:1; 196 u32 battery_present:1; 197 u32 reserved:27; 198 }; 199 200 /* Flags */ 201 202 struct acpi_device_flags { 203 u32 dynamic_status:1; 204 u32 removable:1; 205 u32 ejectable:1; 206 u32 power_manageable:1; 207 u32 match_driver:1; 208 u32 initialized:1; 209 u32 visited:1; 210 u32 hotplug_notify:1; 211 u32 is_dock_station:1; 212 u32 of_compatible_ok:1; 213 u32 coherent_dma:1; 214 u32 cca_seen:1; 215 u32 serial_bus_slave:1; 216 u32 reserved:19; 217 }; 218 219 /* File System */ 220 221 struct acpi_device_dir { 222 struct proc_dir_entry *entry; 223 }; 224 225 #define acpi_device_dir(d) ((d)->dir.entry) 226 227 /* Plug and Play */ 228 229 typedef char acpi_bus_id[8]; 230 typedef unsigned long acpi_bus_address; 231 typedef char acpi_device_name[40]; 232 typedef char acpi_device_class[20]; 233 234 struct acpi_hardware_id { 235 struct list_head list; 236 const char *id; 237 }; 238 239 struct acpi_pnp_type { 240 u32 hardware_id:1; 241 u32 bus_address:1; 242 u32 platform_id:1; 243 u32 reserved:29; 244 }; 245 246 struct acpi_device_pnp { 247 acpi_bus_id bus_id; /* Object name */ 248 struct acpi_pnp_type type; /* ID type */ 249 acpi_bus_address bus_address; /* _ADR */ 250 char *unique_id; /* _UID */ 251 struct list_head ids; /* _HID and _CIDs */ 252 acpi_device_name device_name; /* Driver-determined */ 253 acpi_device_class device_class; /* " */ 254 union acpi_object *str_obj; /* unicode string for _STR method */ 255 }; 256 257 #define acpi_device_bid(d) ((d)->pnp.bus_id) 258 #define acpi_device_adr(d) ((d)->pnp.bus_address) 259 const char *acpi_device_hid(struct acpi_device *device); 260 #define acpi_device_uid(d) ((d)->pnp.unique_id) 261 #define acpi_device_name(d) ((d)->pnp.device_name) 262 #define acpi_device_class(d) ((d)->pnp.device_class) 263 264 /* Power Management */ 265 266 struct acpi_device_power_flags { 267 u32 explicit_get:1; /* _PSC present? */ 268 u32 power_resources:1; /* Power resources */ 269 u32 inrush_current:1; /* Serialize Dx->D0 */ 270 u32 power_removed:1; /* Optimize Dx->D0 */ 271 u32 ignore_parent:1; /* Power is independent of parent power state */ 272 u32 dsw_present:1; /* _DSW present? */ 273 u32 reserved:26; 274 }; 275 276 struct acpi_device_power_state { 277 struct { 278 u8 valid:1; 279 u8 explicit_set:1; /* _PSx present? */ 280 u8 reserved:6; 281 } flags; 282 int power; /* % Power (compared to D0) */ 283 int latency; /* Dx->D0 time (microseconds) */ 284 struct list_head resources; /* Power resources referenced */ 285 }; 286 287 struct acpi_device_power { 288 int state; /* Current state */ 289 struct acpi_device_power_flags flags; 290 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */ 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 /* ACPI Device Specific Data (_DSD) */ 347 struct acpi_device_data { 348 const union acpi_object *pointer; 349 const union acpi_object *properties; 350 const union acpi_object *of_compatible; 351 struct list_head subnodes; 352 }; 353 354 struct acpi_gpio_mapping; 355 356 /* Device */ 357 struct acpi_device { 358 int device_type; 359 acpi_handle handle; /* no handle for fixed hardware */ 360 struct fwnode_handle fwnode; 361 struct acpi_device *parent; 362 struct list_head children; 363 struct list_head node; 364 struct list_head wakeup_list; 365 struct list_head del_list; 366 struct acpi_device_status status; 367 struct acpi_device_flags flags; 368 struct acpi_device_pnp pnp; 369 struct acpi_device_power power; 370 struct acpi_device_wakeup wakeup; 371 struct acpi_device_perf performance; 372 struct acpi_device_dir dir; 373 struct acpi_device_data data; 374 struct acpi_scan_handler *handler; 375 struct acpi_hotplug_context *hp; 376 struct acpi_driver *driver; 377 const struct acpi_gpio_mapping *driver_gpios; 378 void *driver_data; 379 struct device dev; 380 unsigned int physical_node_count; 381 unsigned int dep_unmet; 382 struct list_head physical_node_list; 383 struct mutex physical_node_lock; 384 void (*remove)(struct acpi_device *); 385 }; 386 387 /* Non-device subnode */ 388 struct acpi_data_node { 389 const char *name; 390 acpi_handle handle; 391 struct fwnode_handle fwnode; 392 struct fwnode_handle *parent; 393 struct acpi_device_data data; 394 struct list_head sibling; 395 struct kobject kobj; 396 struct completion kobj_done; 397 }; 398 399 extern const struct fwnode_operations acpi_device_fwnode_ops; 400 extern const struct fwnode_operations acpi_data_fwnode_ops; 401 extern const struct fwnode_operations acpi_static_fwnode_ops; 402 403 bool is_acpi_device_node(const struct fwnode_handle *fwnode); 404 bool is_acpi_data_node(const struct fwnode_handle *fwnode); 405 406 static inline bool is_acpi_node(const struct fwnode_handle *fwnode) 407 { 408 return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode)); 409 } 410 411 #define to_acpi_device_node(__fwnode) \ 412 ({ \ 413 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \ 414 \ 415 is_acpi_device_node(__to_acpi_device_node_fwnode) ? \ 416 container_of(__to_acpi_device_node_fwnode, \ 417 struct acpi_device, fwnode) : \ 418 NULL; \ 419 }) 420 421 #define to_acpi_data_node(__fwnode) \ 422 ({ \ 423 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \ 424 \ 425 is_acpi_data_node(__to_acpi_data_node_fwnode) ? \ 426 container_of(__to_acpi_data_node_fwnode, \ 427 struct acpi_data_node, fwnode) : \ 428 NULL; \ 429 }) 430 431 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode) 432 { 433 return !IS_ERR_OR_NULL(fwnode) && 434 fwnode->ops == &acpi_static_fwnode_ops; 435 } 436 437 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode, 438 const char *name) 439 { 440 return is_acpi_data_node(fwnode) ? 441 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false; 442 } 443 444 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev) 445 { 446 return &adev->fwnode; 447 } 448 449 static inline void *acpi_driver_data(struct acpi_device *d) 450 { 451 return d->driver_data; 452 } 453 454 #define to_acpi_device(d) container_of(d, struct acpi_device, dev) 455 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) 456 457 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) 458 { 459 *((u32 *)&adev->status) = sta; 460 } 461 462 static inline void acpi_set_hp_context(struct acpi_device *adev, 463 struct acpi_hotplug_context *hp) 464 { 465 hp->self = adev; 466 adev->hp = hp; 467 } 468 469 void acpi_initialize_hp_context(struct acpi_device *adev, 470 struct acpi_hotplug_context *hp, 471 int (*notify)(struct acpi_device *, u32), 472 void (*uevent)(struct acpi_device *, u32)); 473 474 /* acpi_device.dev.bus == &acpi_bus_type */ 475 extern struct bus_type acpi_bus_type; 476 477 /* 478 * Events 479 * ------ 480 */ 481 482 struct acpi_bus_event { 483 struct list_head node; 484 acpi_device_class device_class; 485 acpi_bus_id bus_id; 486 u32 type; 487 u32 data; 488 }; 489 490 extern struct kobject *acpi_kobj; 491 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); 492 void acpi_bus_private_data_handler(acpi_handle, void *); 493 int acpi_bus_get_private_data(acpi_handle, void **); 494 int acpi_bus_attach_private_data(acpi_handle, void *); 495 void acpi_bus_detach_private_data(acpi_handle); 496 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); 497 extern int register_acpi_notifier(struct notifier_block *); 498 extern int unregister_acpi_notifier(struct notifier_block *); 499 500 /* 501 * External Functions 502 */ 503 504 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device); 505 struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle); 506 void acpi_bus_put_acpi_device(struct acpi_device *adev); 507 acpi_status acpi_bus_get_status_handle(acpi_handle handle, 508 unsigned long long *sta); 509 int acpi_bus_get_status(struct acpi_device *device); 510 511 int acpi_bus_set_power(acpi_handle handle, int state); 512 const char *acpi_power_state_string(int state); 513 int acpi_device_get_power(struct acpi_device *device, int *state); 514 int acpi_device_set_power(struct acpi_device *device, int state); 515 int acpi_bus_init_power(struct acpi_device *device); 516 int acpi_device_fix_up_power(struct acpi_device *device); 517 int acpi_bus_update_power(acpi_handle handle, int *state_p); 518 int acpi_device_update_power(struct acpi_device *device, int *state_p); 519 bool acpi_bus_power_manageable(acpi_handle handle); 520 521 #ifdef CONFIG_PM 522 bool acpi_bus_can_wakeup(acpi_handle handle); 523 #else 524 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } 525 #endif 526 527 void acpi_scan_lock_acquire(void); 528 void acpi_scan_lock_release(void); 529 void acpi_lock_hp_context(void); 530 void acpi_unlock_hp_context(void); 531 int acpi_scan_add_handler(struct acpi_scan_handler *handler); 532 int acpi_bus_register_driver(struct acpi_driver *driver); 533 void acpi_bus_unregister_driver(struct acpi_driver *driver); 534 int acpi_bus_scan(acpi_handle handle); 535 void acpi_bus_trim(struct acpi_device *start); 536 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); 537 int acpi_match_device_ids(struct acpi_device *device, 538 const struct acpi_device_id *ids); 539 void acpi_set_modalias(struct acpi_device *adev, const char *default_id, 540 char *modalias, size_t len); 541 int acpi_create_dir(struct acpi_device *); 542 void acpi_remove_dir(struct acpi_device *); 543 544 static inline bool acpi_device_enumerated(struct acpi_device *adev) 545 { 546 return adev && adev->flags.initialized && adev->flags.visited; 547 } 548 549 /** 550 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver 551 * @__acpi_driver: acpi_driver struct 552 * 553 * Helper macro for ACPI drivers which do not do anything special in module 554 * init/exit. This eliminates a lot of boilerplate. Each module may only 555 * use this macro once, and calling it replaces module_init() and module_exit() 556 */ 557 #define module_acpi_driver(__acpi_driver) \ 558 module_driver(__acpi_driver, acpi_bus_register_driver, \ 559 acpi_bus_unregister_driver) 560 561 /* 562 * Bind physical devices with ACPI devices 563 */ 564 struct acpi_bus_type { 565 struct list_head list; 566 const char *name; 567 bool (*match)(struct device *dev); 568 struct acpi_device * (*find_companion)(struct device *); 569 void (*setup)(struct device *); 570 void (*cleanup)(struct device *); 571 }; 572 int register_acpi_bus_type(struct acpi_bus_type *); 573 int unregister_acpi_bus_type(struct acpi_bus_type *); 574 int acpi_bind_one(struct device *dev, struct acpi_device *adev); 575 int acpi_unbind_one(struct device *dev); 576 577 struct acpi_pci_root { 578 struct acpi_device * device; 579 struct pci_bus *bus; 580 u16 segment; 581 struct resource secondary; /* downstream bus range */ 582 583 u32 osc_support_set; /* _OSC state of support bits */ 584 u32 osc_control_set; /* _OSC state of control bits */ 585 phys_addr_t mcfg_addr; 586 }; 587 588 /* helper */ 589 590 bool acpi_dma_supported(struct acpi_device *adev); 591 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev); 592 int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset, 593 u64 *size); 594 int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr); 595 void acpi_dma_deconfigure(struct device *dev); 596 597 struct acpi_device *acpi_find_child_device(struct acpi_device *parent, 598 u64 address, bool check_children); 599 int acpi_is_root_bridge(acpi_handle); 600 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); 601 602 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state); 603 int acpi_disable_wakeup_device_power(struct acpi_device *dev); 604 605 #ifdef CONFIG_X86 606 bool acpi_device_always_present(struct acpi_device *adev); 607 #else 608 static inline bool acpi_device_always_present(struct acpi_device *adev) 609 { 610 return false; 611 } 612 #endif 613 614 #ifdef CONFIG_PM 615 void acpi_pm_wakeup_event(struct device *dev); 616 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev, 617 void (*func)(struct acpi_device_wakeup_context *context)); 618 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev); 619 bool acpi_pm_device_can_wakeup(struct device *dev); 620 int acpi_pm_device_sleep_state(struct device *, int *, int); 621 int acpi_pm_set_device_wakeup(struct device *dev, bool enable); 622 int acpi_pm_set_bridge_wakeup(struct device *dev, bool enable); 623 #else 624 static inline void acpi_pm_wakeup_event(struct device *dev) 625 { 626 } 627 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev, 628 struct device *dev, 629 void (*func)(struct acpi_device_wakeup_context *context)) 630 { 631 return AE_SUPPORT; 632 } 633 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev) 634 { 635 return AE_SUPPORT; 636 } 637 static inline bool acpi_pm_device_can_wakeup(struct device *dev) 638 { 639 return false; 640 } 641 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m) 642 { 643 if (p) 644 *p = ACPI_STATE_D0; 645 646 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ? 647 m : ACPI_STATE_D0; 648 } 649 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable) 650 { 651 return -ENODEV; 652 } 653 static inline int acpi_pm_set_bridge_wakeup(struct device *dev, bool enable) 654 { 655 return -ENODEV; 656 } 657 #endif 658 659 #ifdef CONFIG_ACPI_SLEEP 660 u32 acpi_target_system_state(void); 661 #else 662 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; } 663 #endif 664 665 static inline bool acpi_device_power_manageable(struct acpi_device *adev) 666 { 667 return adev->flags.power_manageable; 668 } 669 670 static inline bool acpi_device_can_wakeup(struct acpi_device *adev) 671 { 672 return adev->wakeup.flags.valid; 673 } 674 675 static inline bool acpi_device_can_poweroff(struct acpi_device *adev) 676 { 677 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid || 678 ((acpi_gbl_FADT.header.revision < 6) && 679 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set); 680 } 681 682 #else /* CONFIG_ACPI */ 683 684 static inline int register_acpi_bus_type(void *bus) { return 0; } 685 static inline int unregister_acpi_bus_type(void *bus) { return 0; } 686 687 #endif /* CONFIG_ACPI */ 688 689 #endif /*__ACPI_BUS_H__*/ 690