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 bool acpi_ata_match(acpi_handle handle);
  48 bool acpi_bay_match(acpi_handle handle);
  49 bool acpi_dock_match(acpi_handle handle);
  50
  51 bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs);
  52 union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid,
  53                         u64 rev, u64 func, union acpi_object *argv4);
  54
  55 static inline union acpi_object *
  56 acpi_evaluate_dsm_typed(acpi_handle handle, const guid_t *guid, u64 rev,
  57                         u64 func, union acpi_object *argv4,
  58                         acpi_object_type type)
  59 {
  60         union acpi_object *obj;
  61
  62         obj = acpi_evaluate_dsm(handle, guid, rev, func, argv4);
  63         if (obj && obj->type != type) {
  64                 ACPI_FREE(obj);
  65                 obj = NULL;
  66         }
  67
  68         return obj;
  69 }
  70
  71 #define ACPI_INIT_DSM_ARGV4(cnt, eles)                  \
  72         {                                               \
  73           .package.type = ACPI_TYPE_PACKAGE,            \
  74           .package.count = (cnt),                       \
  75           .package.elements = (eles)                    \
  76         }
  77
  78 bool acpi_dev_found(const char *hid);
  79 bool acpi_dev_present(const char *hid, const char *uid, s64 hrv);
  80
  81 #ifdef CONFIG_ACPI
  82
  83 #include <linux/proc_fs.h>
  84
  85 #define ACPI_BUS_FILE_ROOT      "acpi"
  86 extern struct proc_dir_entry *acpi_root_dir;
  87
  88 enum acpi_bus_device_type {
  89         ACPI_BUS_TYPE_DEVICE = 0,
  90         ACPI_BUS_TYPE_POWER,
  91         ACPI_BUS_TYPE_PROCESSOR,
  92         ACPI_BUS_TYPE_THERMAL,
  93         ACPI_BUS_TYPE_POWER_BUTTON,
  94         ACPI_BUS_TYPE_SLEEP_BUTTON,
  95         ACPI_BUS_TYPE_ECDT_EC,
  96         ACPI_BUS_DEVICE_TYPE_COUNT
  97 };
  98
  99 struct acpi_driver;
 100 struct acpi_device;
 101
 102 /*
 103  * ACPI Scan Handler
 104  * -----------------
 105  */
 106
 107 struct acpi_hotplug_profile {
 108         struct kobject kobj;
 109         int (*scan_dependent)(struct acpi_device *adev);
 110         void (*notify_online)(struct acpi_device *adev);
 111         bool enabled:1;
 112         bool demand_offline:1;
 113 };
 114
 115 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
 116                                                 struct kobject *kobj)
 117 {
 118         return container_of(kobj, struct acpi_hotplug_profile, kobj);
 119 }
 120
 121 struct acpi_scan_handler {
 122         const struct acpi_device_id *ids;
 123         struct list_head list_node;
 124         bool (*match)(const char *idstr, const struct acpi_device_id **matchid);
 125         int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
 126         void (*detach)(struct acpi_device *dev);
 127         void (*bind)(struct device *phys_dev);
 128         void (*unbind)(struct device *phys_dev);
 129         struct acpi_hotplug_profile hotplug;
 130 };
 131
 132 /*
 133  * ACPI Hotplug Context
 134  * --------------------
 135  */
 136
 137 struct acpi_hotplug_context {
 138         struct acpi_device *self;
 139         int (*notify)(struct acpi_device *, u32);
 140         void (*uevent)(struct acpi_device *, u32);
 141         void (*fixup)(struct acpi_device *);
 142 };
 143
 144 /*
 145  * ACPI Driver
 146  * -----------
 147  */
 148
 149 typedef int (*acpi_op_add) (struct acpi_device * device);
 150 typedef int (*acpi_op_remove) (struct acpi_device * device);
 151 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
 152
 153 struct acpi_device_ops {
 154         acpi_op_add add;
 155         acpi_op_remove remove;
 156         acpi_op_notify notify;
 157 };
 158
 159 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS   0x1     /* system AND device events */
 160
 161 struct acpi_driver {
 162         char name[80];
 163         char class[80];
 164         const struct acpi_device_id *ids; /* Supported Hardware IDs */
 165         unsigned int flags;
 166         struct acpi_device_ops ops;
 167         struct device_driver drv;
 168         struct module *owner;
 169 };
 170
 171 /*
 172  * ACPI Device
 173  * -----------
 174  */
 175
 176 /* Status (_STA) */
 177
 178 struct acpi_device_status {
 179         u32 present:1;
 180         u32 enabled:1;
 181         u32 show_in_ui:1;
 182         u32 functional:1;
 183         u32 battery_present:1;
 184         u32 reserved:27;
 185 };
 186
 187 /* Flags */
 188
 189 struct acpi_device_flags {
 190         u32 dynamic_status:1;
 191         u32 removable:1;
 192         u32 ejectable:1;
 193         u32 power_manageable:1;
 194         u32 match_driver:1;
 195         u32 initialized:1;
 196         u32 visited:1;
 197         u32 hotplug_notify:1;
 198         u32 is_dock_station:1;
 199         u32 of_compatible_ok:1;
 200         u32 coherent_dma:1;
 201         u32 cca_seen:1;
 202         u32 enumeration_by_parent:1;
 203         u32 reserved:19;
 204 };
 205
 206 /* File System */
 207
 208 struct acpi_device_dir {
 209         struct proc_dir_entry *entry;
 210 };
 211
 212 #define acpi_device_dir(d)      ((d)->dir.entry)
 213
 214 /* Plug and Play */
 215
 216 typedef char acpi_bus_id[8];
 217 typedef u64 acpi_bus_address;
 218 typedef char acpi_device_name[40];
 219 typedef char acpi_device_class[20];
 220
 221 struct acpi_hardware_id {
 222         struct list_head list;
 223         const char *id;
 224 };
 225
 226 struct acpi_pnp_type {
 227         u32 hardware_id:1;
 228         u32 bus_address:1;
 229         u32 platform_id:1;
 230         u32 reserved:29;
 231 };
 232
 233 struct acpi_device_pnp {
 234         acpi_bus_id bus_id;             /* Object name */
 235         struct acpi_pnp_type type;      /* ID type */
 236         acpi_bus_address bus_address;   /* _ADR */
 237         char *unique_id;                /* _UID */
 238         struct list_head ids;           /* _HID and _CIDs */
 239         acpi_device_name device_name;   /* Driver-determined */
 240         acpi_device_class device_class; /*        "          */
 241         union acpi_object *str_obj;     /* unicode string for _STR method */
 242 };
 243
 244 #define acpi_device_bid(d)      ((d)->pnp.bus_id)
 245 #define acpi_device_adr(d)      ((d)->pnp.bus_address)
 246 const char *acpi_device_hid(struct acpi_device *device);
 247 #define acpi_device_uid(d)      ((d)->pnp.unique_id)
 248 #define acpi_device_name(d)     ((d)->pnp.device_name)
 249 #define acpi_device_class(d)    ((d)->pnp.device_class)
 250
 251 /* Power Management */
 252
 253 struct acpi_device_power_flags {
 254         u32 explicit_get:1;     /* _PSC present? */
 255         u32 power_resources:1;  /* Power resources */
 256         u32 inrush_current:1;   /* Serialize Dx->D0 */
 257         u32 power_removed:1;    /* Optimize Dx->D0 */
 258         u32 ignore_parent:1;    /* Power is independent of parent power state */
 259         u32 dsw_present:1;      /* _DSW present? */
 260         u32 reserved:26;
 261 };
 262
 263 struct acpi_device_power_state {
 264         struct {
 265                 u8 valid:1;
 266                 u8 explicit_set:1;      /* _PSx present? */
 267                 u8 reserved:6;
 268         } flags;
 269         int power;              /* % Power (compared to D0) */
 270         int latency;            /* Dx->D0 time (microseconds) */
 271         struct list_head resources;     /* Power resources referenced */
 272 };
 273
 274 struct acpi_device_power {
 275         int state;              /* Current state */
 276         struct acpi_device_power_flags flags;
 277         struct acpi_device_power_state states[ACPI_D_STATE_COUNT];      /* Power states (D0-D3Cold) */
 278 };
 279
 280 /* Performance Management */
 281
 282 struct acpi_device_perf_flags {
 283         u8 reserved:8;
 284 };
 285
 286 struct acpi_device_perf_state {
 287         struct {
 288                 u8 valid:1;
 289                 u8 reserved:7;
 290         } flags;
 291         u8 power;               /* % Power (compared to P0) */
 292         u8 performance;         /* % Performance (    "   ) */
 293         int latency;            /* Px->P0 time (microseconds) */
 294 };
 295
 296 struct acpi_device_perf {
 297         int state;
 298         struct acpi_device_perf_flags flags;
 299         int state_count;
 300         struct acpi_device_perf_state *states;
 301 };
 302
 303 /* Wakeup Management */
 304 struct acpi_device_wakeup_flags {
 305         u8 valid:1;             /* Can successfully enable wakeup? */
 306         u8 notifier_present:1;  /* Wake-up notify handler has been installed */
 307 };
 308
 309 struct acpi_device_wakeup_context {
 310         void (*func)(struct acpi_device_wakeup_context *context);
 311         struct device *dev;
 312 };
 313
 314 struct acpi_device_wakeup {
 315         acpi_handle gpe_device;
 316         u64 gpe_number;
 317         u64 sleep_state;
 318         struct list_head resources;
 319         struct acpi_device_wakeup_flags flags;
 320         struct acpi_device_wakeup_context context;
 321         struct wakeup_source *ws;
 322         int prepare_count;
 323         int enable_count;
 324 };
 325
 326 struct acpi_device_physical_node {
 327         unsigned int node_id;
 328         struct list_head node;
 329         struct device *dev;
 330         bool put_online:1;
 331 };
 332
 333 struct acpi_device_properties {
 334         const guid_t *guid;
 335         const union acpi_object *properties;
 336         struct list_head list;
 337 };
 338
 339 /* ACPI Device Specific Data (_DSD) */
 340 struct acpi_device_data {
 341         const union acpi_object *pointer;
 342         struct list_head properties;
 343         const union acpi_object *of_compatible;
 344         struct list_head subnodes;
 345 };
 346
 347 struct acpi_gpio_mapping;
 348
 349 /* Device */
 350 struct acpi_device {
 351         int device_type;
 352         acpi_handle handle;             /* no handle for fixed hardware */
 353         struct fwnode_handle fwnode;
 354         struct acpi_device *parent;
 355         struct list_head children;
 356         struct list_head node;
 357         struct list_head wakeup_list;
 358         struct list_head del_list;
 359         struct acpi_device_status status;
 360         struct acpi_device_flags flags;
 361         struct acpi_device_pnp pnp;
 362         struct acpi_device_power power;
 363         struct acpi_device_wakeup wakeup;
 364         struct acpi_device_perf performance;
 365         struct acpi_device_dir dir;
 366         struct acpi_device_data data;
 367         struct acpi_scan_handler *handler;
 368         struct acpi_hotplug_context *hp;
 369         struct acpi_driver *driver;
 370         const struct acpi_gpio_mapping *driver_gpios;
 371         void *driver_data;
 372         struct device dev;
 373         unsigned int physical_node_count;
 374         unsigned int dep_unmet;
 375         struct list_head physical_node_list;
 376         struct mutex physical_node_lock;
 377         void (*remove)(struct acpi_device *);
 378 };
 379
 380 /* Non-device subnode */
 381 struct acpi_data_node {
 382         const char *name;
 383         acpi_handle handle;
 384         struct fwnode_handle fwnode;
 385         struct fwnode_handle *parent;
 386         struct acpi_device_data data;
 387         struct list_head sibling;
 388         struct kobject kobj;
 389         struct completion kobj_done;
 390 };
 391
 392 extern const struct fwnode_operations acpi_device_fwnode_ops;
 393 extern const struct fwnode_operations acpi_data_fwnode_ops;
 394 extern const struct fwnode_operations acpi_static_fwnode_ops;
 395
 396 bool is_acpi_device_node(const struct fwnode_handle *fwnode);
 397 bool is_acpi_data_node(const struct fwnode_handle *fwnode);
 398
 399 static inline bool is_acpi_node(const struct fwnode_handle *fwnode)
 400 {
 401         return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode));
 402 }
 403
 404 #define to_acpi_device_node(__fwnode)                                   \
 405         ({                                                              \
 406                 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \
 407                                                                         \
 408                 is_acpi_device_node(__to_acpi_device_node_fwnode) ?     \
 409                         container_of(__to_acpi_device_node_fwnode,      \
 410                                      struct acpi_device, fwnode) :      \
 411                         NULL;                                           \
 412         })
 413
 414 #define to_acpi_data_node(__fwnode)                                     \
 415         ({                                                              \
 416                 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \
 417                                                                         \
 418                 is_acpi_data_node(__to_acpi_data_node_fwnode) ?         \
 419                         container_of(__to_acpi_data_node_fwnode,        \
 420                                      struct acpi_data_node, fwnode) :   \
 421                         NULL;                                           \
 422         })
 423
 424 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode)
 425 {
 426         return !IS_ERR_OR_NULL(fwnode) &&
 427                 fwnode->ops == &acpi_static_fwnode_ops;
 428 }
 429
 430 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode,
 431                                         const char *name)
 432 {
 433         return is_acpi_data_node(fwnode) ?
 434                 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false;
 435 }
 436
 437 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
 438 {
 439         return &adev->fwnode;
 440 }
 441
 442 static inline void *acpi_driver_data(struct acpi_device *d)
 443 {
 444         return d->driver_data;
 445 }
 446
 447 #define to_acpi_device(d)       container_of(d, struct acpi_device, dev)
 448 #define to_acpi_driver(d)       container_of(d, struct acpi_driver, drv)
 449
 450 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
 451 {
 452         *((u32 *)&adev->status) = sta;
 453 }
 454
 455 static inline void acpi_set_hp_context(struct acpi_device *adev,
 456                                        struct acpi_hotplug_context *hp)
 457 {
 458         hp->self = adev;
 459         adev->hp = hp;
 460 }
 461
 462 void acpi_initialize_hp_context(struct acpi_device *adev,
 463                                 struct acpi_hotplug_context *hp,
 464                                 int (*notify)(struct acpi_device *, u32),
 465                                 void (*uevent)(struct acpi_device *, u32));
 466
 467 /* acpi_device.dev.bus == &acpi_bus_type */
 468 extern struct bus_type acpi_bus_type;
 469
 470 /*
 471  * Events
 472  * ------
 473  */
 474
 475 struct acpi_bus_event {
 476         struct list_head node;
 477         acpi_device_class device_class;
 478         acpi_bus_id bus_id;
 479         u32 type;
 480         u32 data;
 481 };
 482
 483 extern struct kobject *acpi_kobj;
 484 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
 485 void acpi_bus_private_data_handler(acpi_handle, void *);
 486 int acpi_bus_get_private_data(acpi_handle, void **);
 487 int acpi_bus_attach_private_data(acpi_handle, void *);
 488 void acpi_bus_detach_private_data(acpi_handle);
 489 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
 490 extern int register_acpi_notifier(struct notifier_block *);
 491 extern int unregister_acpi_notifier(struct notifier_block *);
 492
 493 /*
 494  * External Functions
 495  */
 496
 497 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
 498 struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle);
 499 void acpi_bus_put_acpi_device(struct acpi_device *adev);
 500 acpi_status acpi_bus_get_status_handle(acpi_handle handle,
 501                                        unsigned long long *sta);
 502 int acpi_bus_get_status(struct acpi_device *device);
 503
 504 int acpi_bus_set_power(acpi_handle handle, int state);
 505 const char *acpi_power_state_string(int state);
 506 int acpi_device_set_power(struct acpi_device *device, int state);
 507 int acpi_bus_init_power(struct acpi_device *device);
 508 int acpi_device_fix_up_power(struct acpi_device *device);
 509 int acpi_bus_update_power(acpi_handle handle, int *state_p);
 510 int acpi_device_update_power(struct acpi_device *device, int *state_p);
 511 bool acpi_bus_power_manageable(acpi_handle handle);
 512 int acpi_device_power_add_dependent(struct acpi_device *adev,
 513                                     struct device *dev);
 514 void acpi_device_power_remove_dependent(struct acpi_device *adev,
 515                                         struct device *dev);
 516
 517 #ifdef CONFIG_PM
 518 bool acpi_bus_can_wakeup(acpi_handle handle);
 519 #else
 520 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
 521 #endif
 522
 523 void acpi_scan_lock_acquire(void);
 524 void acpi_scan_lock_release(void);
 525 void acpi_lock_hp_context(void);
 526 void acpi_unlock_hp_context(void);
 527 int acpi_scan_add_handler(struct acpi_scan_handler *handler);
 528 int acpi_bus_register_driver(struct acpi_driver *driver);
 529 void acpi_bus_unregister_driver(struct acpi_driver *driver);
 530 int acpi_bus_scan(acpi_handle handle);
 531 void acpi_bus_trim(struct acpi_device *start);
 532 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
 533 int acpi_match_device_ids(struct acpi_device *device,
 534                           const struct acpi_device_id *ids);
 535 void acpi_set_modalias(struct acpi_device *adev, const char *default_id,
 536                        char *modalias, size_t len);
 537 int acpi_create_dir(struct acpi_device *);
 538 void acpi_remove_dir(struct acpi_device *);
 539
 540 static inline bool acpi_device_enumerated(struct acpi_device *adev)
 541 {
 542         return adev && adev->flags.initialized && adev->flags.visited;
 543 }
 544
 545 /**
 546  * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
 547  * @__acpi_driver: acpi_driver struct
 548  *
 549  * Helper macro for ACPI drivers which do not do anything special in module
 550  * init/exit. This eliminates a lot of boilerplate. Each module may only
 551  * use this macro once, and calling it replaces module_init() and module_exit()
 552  */
 553 #define module_acpi_driver(__acpi_driver) \
 554         module_driver(__acpi_driver, acpi_bus_register_driver, \
 555                       acpi_bus_unregister_driver)
 556
 557 /*
 558  * Bind physical devices with ACPI devices
 559  */
 560 struct acpi_bus_type {
 561         struct list_head list;
 562         const char *name;
 563         bool (*match)(struct device *dev);
 564         struct acpi_device * (*find_companion)(struct device *);
 565         void (*setup)(struct device *);
 566         void (*cleanup)(struct device *);
 567 };
 568 int register_acpi_bus_type(struct acpi_bus_type *);
 569 int unregister_acpi_bus_type(struct acpi_bus_type *);
 570 int acpi_bind_one(struct device *dev, struct acpi_device *adev);
 571 int acpi_unbind_one(struct device *dev);
 572
 573 struct acpi_pci_root {
 574         struct acpi_device * device;
 575         struct pci_bus *bus;
 576         u16 segment;
 577         struct resource secondary;      /* downstream bus range */
 578
 579         u32 osc_support_set;    /* _OSC state of support bits */
 580         u32 osc_control_set;    /* _OSC state of control bits */
 581         phys_addr_t mcfg_addr;
 582 };
 583
 584 /* helper */
 585
 586 bool acpi_dma_supported(struct acpi_device *adev);
 587 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);
 588 int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset,
 589                        u64 *size);
 590 int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr);
 591
 592 struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
 593                                            u64 address, bool check_children);
 594 int acpi_is_root_bridge(acpi_handle);
 595 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
 596
 597 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
 598 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
 599
 600 #ifdef CONFIG_X86
 601 bool acpi_device_always_present(struct acpi_device *adev);
 602 #else
 603 static inline bool acpi_device_always_present(struct acpi_device *adev)
 604 {
 605         return false;
 606 }
 607 #endif
 608
 609 #ifdef CONFIG_PM
 610 void acpi_pm_wakeup_event(struct device *dev);
 611 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,
 612                         void (*func)(struct acpi_device_wakeup_context *context));
 613 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);
 614 bool acpi_pm_device_can_wakeup(struct device *dev);
 615 int acpi_pm_device_sleep_state(struct device *, int *, int);
 616 int acpi_pm_set_device_wakeup(struct device *dev, bool enable);
 617 int acpi_pm_set_bridge_wakeup(struct device *dev, bool enable);
 618 #else
 619 static inline void acpi_pm_wakeup_event(struct device *dev)
 620 {
 621 }
 622 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
 623                                                struct device *dev,
 624                                                void (*func)(struct acpi_device_wakeup_context *context))
 625 {
 626         return AE_SUPPORT;
 627 }
 628 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)
 629 {
 630         return AE_SUPPORT;
 631 }
 632 static inline bool acpi_pm_device_can_wakeup(struct device *dev)
 633 {
 634         return false;
 635 }
 636 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
 637 {
 638         if (p)
 639                 *p = ACPI_STATE_D0;
 640
 641         return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
 642                 m : ACPI_STATE_D0;
 643 }
 644 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable)
 645 {
 646         return -ENODEV;
 647 }
 648 static inline int acpi_pm_set_bridge_wakeup(struct device *dev, bool enable)
 649 {
 650         return -ENODEV;
 651 }
 652 #endif
 653
 654 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT
 655 bool acpi_sleep_state_supported(u8 sleep_state);
 656 #else
 657 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; }
 658 #endif
 659
 660 #ifdef CONFIG_ACPI_SLEEP
 661 u32 acpi_target_system_state(void);
 662 #else
 663 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
 664 #endif
 665
 666 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
 667 {
 668         return adev->flags.power_manageable;
 669 }
 670
 671 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
 672 {
 673         return adev->wakeup.flags.valid;
 674 }
 675
 676 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
 677 {
 678         return adev->power.states[ACPI_STATE_D3_COLD].flags.valid ||
 679                 ((acpi_gbl_FADT.header.revision < 6) &&
 680                 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set);
 681 }
 682
 683 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2);
 684
 685 struct acpi_device *
 686 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv);
 687
 688 static inline void acpi_dev_put(struct acpi_device *adev)
 689 {
 690         put_device(&adev->dev);
 691 }
 692 #else   /* CONFIG_ACPI */
 693
 694 static inline int register_acpi_bus_type(void *bus) { return 0; }
 695 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
 696
 697 #endif                          /* CONFIG_ACPI */
 698
 699 #endif /*__ACPI_BUS_H__*/