include/acpi/acpi_bus.h

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