include/acpi/acpi_bus.h

   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
  82 #ifdef CONFIG_ACPI
  83
  84 struct proc_dir_entry;
  85
  86 #define ACPI_BUS_FILE_ROOT      "acpi"
  87 extern struct proc_dir_entry *acpi_root_dir;
  88
  89 enum acpi_bus_device_type {
  90         ACPI_BUS_TYPE_DEVICE = 0,
  91         ACPI_BUS_TYPE_POWER,
  92         ACPI_BUS_TYPE_PROCESSOR,
  93         ACPI_BUS_TYPE_THERMAL,
  94         ACPI_BUS_TYPE_POWER_BUTTON,
  95         ACPI_BUS_TYPE_SLEEP_BUTTON,
  96         ACPI_BUS_TYPE_ECDT_EC,
  97         ACPI_BUS_DEVICE_TYPE_COUNT
  98 };
  99
 100 struct acpi_driver;
 101 struct acpi_device;
 102
 103 /*
 104  * ACPI Scan Handler
 105  * -----------------
 106  */
 107
 108 struct acpi_hotplug_profile {
 109         struct kobject kobj;
 110         int (*scan_dependent)(struct acpi_device *adev);
 111         void (*notify_online)(struct acpi_device *adev);
 112         bool enabled:1;
 113         bool demand_offline:1;
 114 };
 115
 116 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
 117                                                 struct kobject *kobj)
 118 {
 119         return container_of(kobj, struct acpi_hotplug_profile, kobj);
 120 }
 121
 122 struct acpi_scan_handler {
 123         const struct acpi_device_id *ids;
 124         struct list_head list_node;
 125         bool (*match)(const char *idstr, const struct acpi_device_id **matchid);
 126         int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
 127         void (*detach)(struct acpi_device *dev);
 128         void (*bind)(struct device *phys_dev);
 129         void (*unbind)(struct device *phys_dev);
 130         struct acpi_hotplug_profile hotplug;
 131 };
 132
 133 /*
 134  * ACPI Hotplug Context
 135  * --------------------
 136  */
 137
 138 struct acpi_hotplug_context {
 139         struct acpi_device *self;
 140         int (*notify)(struct acpi_device *, u32);
 141         void (*uevent)(struct acpi_device *, u32);
 142         void (*fixup)(struct acpi_device *);
 143 };
 144
 145 /*
 146  * ACPI Driver
 147  * -----------
 148  */
 149
 150 typedef int (*acpi_op_add) (struct acpi_device * device);
 151 typedef int (*acpi_op_remove) (struct acpi_device * device);
 152 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
 153
 154 struct acpi_device_ops {
 155         acpi_op_add add;
 156         acpi_op_remove remove;
 157         acpi_op_notify notify;
 158 };
 159
 160 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS   0x1     /* system AND device events */
 161
 162 struct acpi_driver {
 163         char name[80];
 164         char class[80];
 165         const struct acpi_device_id *ids; /* Supported Hardware IDs */
 166         unsigned int flags;
 167         struct acpi_device_ops ops;
 168         struct device_driver drv;
 169         struct module *owner;
 170 };
 171
 172 /*
 173  * ACPI Device
 174  * -----------
 175  */
 176
 177 /* Status (_STA) */
 178
 179 struct acpi_device_status {
 180         u32 present:1;
 181         u32 enabled:1;
 182         u32 show_in_ui:1;
 183         u32 functional:1;
 184         u32 battery_present:1;
 185         u32 reserved:27;
 186 };
 187
 188 /* Flags */
 189
 190 struct acpi_device_flags {
 191         u32 dynamic_status:1;
 192         u32 removable:1;
 193         u32 ejectable:1;
 194         u32 power_manageable:1;
 195         u32 match_driver:1;
 196         u32 initialized:1;
 197         u32 visited:1;
 198         u32 hotplug_notify:1;
 199         u32 is_dock_station:1;
 200         u32 of_compatible_ok:1;
 201         u32 coherent_dma:1;
 202         u32 cca_seen:1;
 203         u32 enumeration_by_parent:1;
 204         u32 reserved:19;
 205 };
 206
 207 /* File System */
 208
 209 struct acpi_device_dir {
 210         struct proc_dir_entry *entry;
 211 };
 212
 213 #define acpi_device_dir(d)      ((d)->dir.entry)
 214
 215 /* Plug and Play */
 216
 217 typedef char acpi_bus_id[8];
 218 typedef u64 acpi_bus_address;
 219 typedef char acpi_device_name[40];
 220 typedef char acpi_device_class[20];
 221
 222 struct acpi_hardware_id {
 223         struct list_head list;
 224         const char *id;
 225 };
 226
 227 struct acpi_pnp_type {
 228         u32 hardware_id:1;
 229         u32 bus_address:1;
 230         u32 platform_id:1;
 231         u32 reserved:29;
 232 };
 233
 234 struct acpi_device_pnp {
 235         acpi_bus_id bus_id;             /* Object name */
 236         struct acpi_pnp_type type;      /* ID type */
 237         acpi_bus_address bus_address;   /* _ADR */
 238         char *unique_id;                /* _UID */
 239         struct list_head ids;           /* _HID and _CIDs */
 240         acpi_device_name device_name;   /* Driver-determined */
 241         acpi_device_class device_class; /*        "          */
 242         union acpi_object *str_obj;     /* unicode string for _STR method */
 243 };
 244
 245 #define acpi_device_bid(d)      ((d)->pnp.bus_id)
 246 #define acpi_device_adr(d)      ((d)->pnp.bus_address)
 247 const char *acpi_device_hid(struct acpi_device *device);
 248 #define acpi_device_uid(d)      ((d)->pnp.unique_id)
 249 #define acpi_device_name(d)     ((d)->pnp.device_name)
 250 #define acpi_device_class(d)    ((d)->pnp.device_class)
 251
 252 /* Power Management */
 253
 254 struct acpi_device_power_flags {
 255         u32 explicit_get:1;     /* _PSC present? */
 256         u32 power_resources:1;  /* Power resources */
 257         u32 inrush_current:1;   /* Serialize Dx->D0 */
 258         u32 power_removed:1;    /* Optimize Dx->D0 */
 259         u32 ignore_parent:1;    /* Power is independent of parent power state */
 260         u32 dsw_present:1;      /* _DSW present? */
 261         u32 reserved:26;
 262 };
 263
 264 struct acpi_device_power_state {
 265         struct {
 266                 u8 valid:1;
 267                 u8 explicit_set:1;      /* _PSx present? */
 268                 u8 reserved:6;
 269         } flags;
 270         int power;              /* % Power (compared to D0) */
 271         int latency;            /* Dx->D0 time (microseconds) */
 272         struct list_head resources;     /* Power resources referenced */
 273 };
 274
 275 struct acpi_device_power {
 276         int state;              /* Current state */
 277         struct acpi_device_power_flags flags;
 278         struct acpi_device_power_state states[ACPI_D_STATE_COUNT];      /* Power states (D0-D3Cold) */
 279 };
 280
 281 /* Performance Management */
 282
 283 struct acpi_device_perf_flags {
 284         u8 reserved:8;
 285 };
 286
 287 struct acpi_device_perf_state {
 288         struct {
 289                 u8 valid:1;
 290                 u8 reserved:7;
 291         } flags;
 292         u8 power;               /* % Power (compared to P0) */
 293         u8 performance;         /* % Performance (    "   ) */
 294         int latency;            /* Px->P0 time (microseconds) */
 295 };
 296
 297 struct acpi_device_perf {
 298         int state;
 299         struct acpi_device_perf_flags flags;
 300         int state_count;
 301         struct acpi_device_perf_state *states;
 302 };
 303
 304 /* Wakeup Management */
 305 struct acpi_device_wakeup_flags {
 306         u8 valid:1;             /* Can successfully enable wakeup? */
 307         u8 notifier_present:1;  /* Wake-up notify handler has been installed */
 308 };
 309
 310 struct acpi_device_wakeup_context {
 311         void (*func)(struct acpi_device_wakeup_context *context);
 312         struct device *dev;
 313 };
 314
 315 struct acpi_device_wakeup {
 316         acpi_handle gpe_device;
 317         u64 gpe_number;
 318         u64 sleep_state;
 319         struct list_head resources;
 320         struct acpi_device_wakeup_flags flags;
 321         struct acpi_device_wakeup_context context;
 322         struct wakeup_source *ws;
 323         int prepare_count;
 324         int enable_count;
 325 };
 326
 327 struct acpi_device_physical_node {
 328         unsigned int node_id;
 329         struct list_head node;
 330         struct device *dev;
 331         bool put_online:1;
 332 };
 333
 334 struct acpi_device_properties {
 335         const guid_t *guid;
 336         const union acpi_object *properties;
 337         struct list_head list;
 338 };
 339
 340 /* ACPI Device Specific Data (_DSD) */
 341 struct acpi_device_data {
 342         const union acpi_object *pointer;
 343         struct list_head properties;
 344         const union acpi_object *of_compatible;
 345         struct list_head subnodes;
 346 };
 347
 348 struct acpi_gpio_mapping;
 349
 350 /* Device */
 351 struct acpi_device {
 352         int device_type;
 353         acpi_handle handle;             /* no handle for fixed hardware */
 354         struct fwnode_handle fwnode;
 355         struct acpi_device *parent;
 356         struct list_head children;
 357         struct list_head node;
 358         struct list_head wakeup_list;
 359         struct list_head del_list;
 360         struct acpi_device_status status;
 361         struct acpi_device_flags flags;
 362         struct acpi_device_pnp pnp;
 363         struct acpi_device_power power;
 364         struct acpi_device_wakeup wakeup;
 365         struct acpi_device_perf performance;
 366         struct acpi_device_dir dir;
 367         struct acpi_device_data data;
 368         struct acpi_scan_handler *handler;
 369         struct acpi_hotplug_context *hp;
 370         struct acpi_driver *driver;
 371         const struct acpi_gpio_mapping *driver_gpios;
 372         void *driver_data;
 373         struct device dev;
 374         unsigned int physical_node_count;
 375         unsigned int dep_unmet;
 376         struct list_head physical_node_list;
 377         struct mutex physical_node_lock;
 378         void (*remove)(struct acpi_device *);
 379 };
 380
 381 /* Non-device subnode */
 382 struct acpi_data_node {
 383         const char *name;
 384         acpi_handle handle;
 385         struct fwnode_handle fwnode;
 386         struct fwnode_handle *parent;
 387         struct acpi_device_data data;
 388         struct list_head sibling;
 389         struct kobject kobj;
 390         struct completion kobj_done;
 391 };
 392
 393 extern const struct fwnode_operations acpi_device_fwnode_ops;
 394 extern const struct fwnode_operations acpi_data_fwnode_ops;
 395 extern const struct fwnode_operations acpi_static_fwnode_ops;
 396
 397 bool is_acpi_device_node(const struct fwnode_handle *fwnode);
 398 bool is_acpi_data_node(const struct fwnode_handle *fwnode);
 399
 400 static inline bool is_acpi_node(const struct fwnode_handle *fwnode)
 401 {
 402         return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode));
 403 }
 404
 405 #define to_acpi_device_node(__fwnode)                                   \
 406         ({                                                              \
 407                 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \
 408                                                                         \
 409                 is_acpi_device_node(__to_acpi_device_node_fwnode) ?     \
 410                         container_of(__to_acpi_device_node_fwnode,      \
 411                                      struct acpi_device, fwnode) :      \
 412                         NULL;                                           \
 413         })
 414
 415 #define to_acpi_data_node(__fwnode)                                     \
 416         ({                                                              \
 417                 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \
 418                                                                         \
 419                 is_acpi_data_node(__to_acpi_data_node_fwnode) ?         \
 420                         container_of(__to_acpi_data_node_fwnode,        \
 421                                      struct acpi_data_node, fwnode) :   \
 422                         NULL;                                           \
 423         })
 424
 425 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode)
 426 {
 427         return !IS_ERR_OR_NULL(fwnode) &&
 428                 fwnode->ops == &acpi_static_fwnode_ops;
 429 }
 430
 431 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode,
 432                                         const char *name)
 433 {
 434         return is_acpi_data_node(fwnode) ?
 435                 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false;
 436 }
 437
 438 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
 439 {
 440         return &adev->fwnode;
 441 }
 442
 443 static inline void *acpi_driver_data(struct acpi_device *d)
 444 {
 445         return d->driver_data;
 446 }
 447
 448 #define to_acpi_device(d)       container_of(d, struct acpi_device, dev)
 449 #define to_acpi_driver(d)       container_of(d, struct acpi_driver, drv)
 450
 451 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
 452 {
 453         *((u32 *)&adev->status) = sta;
 454 }
 455
 456 static inline void acpi_set_hp_context(struct acpi_device *adev,
 457                                        struct acpi_hotplug_context *hp)
 458 {
 459         hp->self = adev;
 460         adev->hp = hp;
 461 }
 462
 463 void acpi_initialize_hp_context(struct acpi_device *adev,
 464                                 struct acpi_hotplug_context *hp,
 465                                 int (*notify)(struct acpi_device *, u32),
 466                                 void (*uevent)(struct acpi_device *, u32));
 467
 468 /* acpi_device.dev.bus == &acpi_bus_type */
 469 extern struct bus_type acpi_bus_type;
 470
 471 /*
 472  * Events
 473  * ------
 474  */
 475
 476 struct acpi_bus_event {
 477         struct list_head node;
 478         acpi_device_class device_class;
 479         acpi_bus_id bus_id;
 480         u32 type;
 481         u32 data;
 482 };
 483
 484 extern struct kobject *acpi_kobj;
 485 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
 486 void acpi_bus_private_data_handler(acpi_handle, void *);
 487 int acpi_bus_get_private_data(acpi_handle, void **);
 488 int acpi_bus_attach_private_data(acpi_handle, void *);
 489 void acpi_bus_detach_private_data(acpi_handle);
 490 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
 491 extern int register_acpi_notifier(struct notifier_block *);
 492 extern int unregister_acpi_notifier(struct notifier_block *);
 493
 494 /*
 495  * External Functions
 496  */
 497
 498 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
 499 struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle);
 500 void acpi_bus_put_acpi_device(struct acpi_device *adev);
 501 acpi_status acpi_bus_get_status_handle(acpi_handle handle,
 502                                        unsigned long long *sta);
 503 int acpi_bus_get_status(struct acpi_device *device);
 504
 505 int acpi_bus_set_power(acpi_handle handle, int state);
 506 const char *acpi_power_state_string(int state);
 507 int acpi_device_set_power(struct acpi_device *device, int state);
 508 int acpi_bus_init_power(struct acpi_device *device);
 509 int acpi_device_fix_up_power(struct acpi_device *device);
 510 int acpi_bus_update_power(acpi_handle handle, int *state_p);
 511 int acpi_device_update_power(struct acpi_device *device, int *state_p);
 512 bool acpi_bus_power_manageable(acpi_handle handle);
 513 int acpi_device_power_add_dependent(struct acpi_device *adev,
 514                                     struct device *dev);
 515 void acpi_device_power_remove_dependent(struct acpi_device *adev,
 516                                         struct device *dev);
 517
 518 #ifdef CONFIG_PM
 519 bool acpi_bus_can_wakeup(acpi_handle handle);
 520 #else
 521 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
 522 #endif
 523
 524 void acpi_scan_lock_acquire(void);
 525 void acpi_scan_lock_release(void);
 526 void acpi_lock_hp_context(void);
 527 void acpi_unlock_hp_context(void);
 528 int acpi_scan_add_handler(struct acpi_scan_handler *handler);
 529 int acpi_bus_register_driver(struct acpi_driver *driver);
 530 void acpi_bus_unregister_driver(struct acpi_driver *driver);
 531 int acpi_bus_scan(acpi_handle handle);
 532 void acpi_bus_trim(struct acpi_device *start);
 533 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
 534 int acpi_match_device_ids(struct acpi_device *device,
 535                           const struct acpi_device_id *ids);
 536 void acpi_set_modalias(struct acpi_device *adev, const char *default_id,
 537                        char *modalias, size_t len);
 538 int acpi_create_dir(struct acpi_device *);
 539 void acpi_remove_dir(struct acpi_device *);
 540
 541 static inline bool acpi_device_enumerated(struct acpi_device *adev)
 542 {
 543         return adev && adev->flags.initialized && adev->flags.visited;
 544 }
 545
 546 /**
 547  * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
 548  * @__acpi_driver: acpi_driver struct
 549  *
 550  * Helper macro for ACPI drivers which do not do anything special in module
 551  * init/exit. This eliminates a lot of boilerplate. Each module may only
 552  * use this macro once, and calling it replaces module_init() and module_exit()
 553  */
 554 #define module_acpi_driver(__acpi_driver) \
 555         module_driver(__acpi_driver, acpi_bus_register_driver, \
 556                       acpi_bus_unregister_driver)
 557
 558 /*
 559  * Bind physical devices with ACPI devices
 560  */
 561 struct acpi_bus_type {
 562         struct list_head list;
 563         const char *name;
 564         bool (*match)(struct device *dev);
 565         struct acpi_device * (*find_companion)(struct device *);
 566         void (*setup)(struct device *);
 567         void (*cleanup)(struct device *);
 568 };
 569 int register_acpi_bus_type(struct acpi_bus_type *);
 570 int unregister_acpi_bus_type(struct acpi_bus_type *);
 571 int acpi_bind_one(struct device *dev, struct acpi_device *adev);
 572 int acpi_unbind_one(struct device *dev);
 573
 574 struct acpi_pci_root {
 575         struct acpi_device * device;
 576         struct pci_bus *bus;
 577         u16 segment;
 578         struct resource secondary;      /* downstream bus range */
 579
 580         u32 osc_support_set;    /* _OSC state of support bits */
 581         u32 osc_control_set;    /* _OSC state of control bits */
 582         phys_addr_t mcfg_addr;
 583 };
 584
 585 /* helper */
 586
 587 bool acpi_dma_supported(struct acpi_device *adev);
 588 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);
 589 int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset,
 590                        u64 *size);
 591 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr,
 592                            const u32 *input_id);
 593 static inline int acpi_dma_configure(struct device *dev,
 594                                      enum dev_dma_attr attr)
 595 {
 596         return acpi_dma_configure_id(dev, attr, NULL);
 597 }
 598 struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
 599                                            u64 address, bool check_children);
 600 int acpi_is_root_bridge(acpi_handle);
 601 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
 602
 603 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
 604 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
 605
 606 #ifdef CONFIG_X86
 607 bool acpi_device_always_present(struct acpi_device *adev);
 608 #else
 609 static inline bool acpi_device_always_present(struct acpi_device *adev)
 610 {
 611         return false;
 612 }
 613 #endif
 614
 615 #ifdef CONFIG_PM
 616 void acpi_pm_wakeup_event(struct device *dev);
 617 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,
 618                         void (*func)(struct acpi_device_wakeup_context *context));
 619 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);
 620 bool acpi_pm_device_can_wakeup(struct device *dev);
 621 int acpi_pm_device_sleep_state(struct device *, int *, int);
 622 int acpi_pm_set_device_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 #endif
 654
 655 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT
 656 bool acpi_sleep_state_supported(u8 sleep_state);
 657 #else
 658 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; }
 659 #endif
 660
 661 #ifdef CONFIG_ACPI_SLEEP
 662 u32 acpi_target_system_state(void);
 663 #else
 664 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
 665 #endif
 666
 667 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
 668 {
 669         return adev->flags.power_manageable;
 670 }
 671
 672 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
 673 {
 674         return adev->wakeup.flags.valid;
 675 }
 676
 677 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
 678 {
 679         return adev->power.states[ACPI_STATE_D3_COLD].flags.valid ||
 680                 ((acpi_gbl_FADT.header.revision < 6) &&
 681                 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set);
 682 }
 683
 684 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2);
 685
 686 struct acpi_device *
 687 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv);
 688
 689 static inline void acpi_dev_put(struct acpi_device *adev)
 690 {
 691         put_device(&adev->dev);
 692 }
 693 #else   /* CONFIG_ACPI */
 694
 695 static inline int register_acpi_bus_type(void *bus) { return 0; }
 696 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
 697
 698 #endif                          /* CONFIG_ACPI */
 699
 700 #endif /*__ACPI_BUS_H__*/