linux/include/linux/acpi.h
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   1/*
   2 * acpi.h - ACPI Interface
   3 *
   4 * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
   5 *
   6 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License as published by
  10 * the Free Software Foundation; either version 2 of the License, or
  11 * (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21 *
  22 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  23 */
  24
  25#ifndef _LINUX_ACPI_H
  26#define _LINUX_ACPI_H
  27
  28#include <linux/errno.h>
  29#include <linux/ioport.h>       /* for struct resource */
  30#include <linux/device.h>
  31
  32#ifdef  CONFIG_ACPI
  33
  34#ifndef _LINUX
  35#define _LINUX
  36#endif
  37
  38#include <linux/list.h>
  39#include <linux/mod_devicetable.h>
  40
  41#include <acpi/acpi.h>
  42#include <acpi/acpi_bus.h>
  43#include <acpi/acpi_drivers.h>
  44#include <acpi/acpi_numa.h>
  45#include <acpi/acpi_io.h>
  46#include <asm/acpi.h>
  47
  48static inline acpi_handle acpi_device_handle(struct acpi_device *adev)
  49{
  50        return adev ? adev->handle : NULL;
  51}
  52
  53#define ACPI_COMPANION(dev)             ((dev)->acpi_node.companion)
  54#define ACPI_COMPANION_SET(dev, adev)   ACPI_COMPANION(dev) = (adev)
  55#define ACPI_HANDLE(dev)                acpi_device_handle(ACPI_COMPANION(dev))
  56
  57static inline void acpi_preset_companion(struct device *dev,
  58                                         struct acpi_device *parent, u64 addr)
  59{
  60        ACPI_COMPANION_SET(dev, acpi_find_child_device(parent, addr, NULL));
  61}
  62
  63static inline const char *acpi_dev_name(struct acpi_device *adev)
  64{
  65        return dev_name(&adev->dev);
  66}
  67
  68enum acpi_irq_model_id {
  69        ACPI_IRQ_MODEL_PIC = 0,
  70        ACPI_IRQ_MODEL_IOAPIC,
  71        ACPI_IRQ_MODEL_IOSAPIC,
  72        ACPI_IRQ_MODEL_PLATFORM,
  73        ACPI_IRQ_MODEL_COUNT
  74};
  75
  76extern enum acpi_irq_model_id   acpi_irq_model;
  77
  78enum acpi_interrupt_id {
  79        ACPI_INTERRUPT_PMI      = 1,
  80        ACPI_INTERRUPT_INIT,
  81        ACPI_INTERRUPT_CPEI,
  82        ACPI_INTERRUPT_COUNT
  83};
  84
  85#define ACPI_SPACE_MEM          0
  86
  87enum acpi_address_range_id {
  88        ACPI_ADDRESS_RANGE_MEMORY = 1,
  89        ACPI_ADDRESS_RANGE_RESERVED = 2,
  90        ACPI_ADDRESS_RANGE_ACPI = 3,
  91        ACPI_ADDRESS_RANGE_NVS  = 4,
  92        ACPI_ADDRESS_RANGE_COUNT
  93};
  94
  95
  96/* Table Handlers */
  97
  98typedef int (*acpi_tbl_table_handler)(struct acpi_table_header *table);
  99
 100typedef int (*acpi_tbl_entry_handler)(struct acpi_subtable_header *header,
 101                                      const unsigned long end);
 102
 103#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE
 104void acpi_initrd_override(void *data, size_t size);
 105#else
 106static inline void acpi_initrd_override(void *data, size_t size)
 107{
 108}
 109#endif
 110
 111char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
 112void __acpi_unmap_table(char *map, unsigned long size);
 113int early_acpi_boot_init(void);
 114int acpi_boot_init (void);
 115void acpi_boot_table_init (void);
 116int acpi_mps_check (void);
 117int acpi_numa_init (void);
 118
 119int acpi_table_init (void);
 120int acpi_table_parse(char *id, acpi_tbl_table_handler handler);
 121int __init acpi_table_parse_entries(char *id, unsigned long table_size,
 122                                    int entry_id,
 123                                    acpi_tbl_entry_handler handler,
 124                                    unsigned int max_entries);
 125int acpi_table_parse_madt(enum acpi_madt_type id,
 126                          acpi_tbl_entry_handler handler,
 127                          unsigned int max_entries);
 128int acpi_parse_mcfg (struct acpi_table_header *header);
 129void acpi_table_print_madt_entry (struct acpi_subtable_header *madt);
 130
 131/* the following four functions are architecture-dependent */
 132void acpi_numa_slit_init (struct acpi_table_slit *slit);
 133void acpi_numa_processor_affinity_init (struct acpi_srat_cpu_affinity *pa);
 134void acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa);
 135int acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma);
 136void acpi_numa_arch_fixup(void);
 137
 138#ifdef CONFIG_ACPI_HOTPLUG_CPU
 139/* Arch dependent functions for cpu hotplug support */
 140int acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu);
 141int acpi_unmap_lsapic(int cpu);
 142#endif /* CONFIG_ACPI_HOTPLUG_CPU */
 143
 144int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base);
 145int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
 146void acpi_irq_stats_init(void);
 147extern u32 acpi_irq_handled;
 148extern u32 acpi_irq_not_handled;
 149
 150extern int sbf_port;
 151extern unsigned long acpi_realmode_flags;
 152
 153int acpi_register_gsi (struct device *dev, u32 gsi, int triggering, int polarity);
 154int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
 155int acpi_isa_irq_to_gsi (unsigned isa_irq, u32 *gsi);
 156
 157#ifdef CONFIG_X86_IO_APIC
 158extern int acpi_get_override_irq(u32 gsi, int *trigger, int *polarity);
 159#else
 160#define acpi_get_override_irq(gsi, trigger, polarity) (-1)
 161#endif
 162/*
 163 * This function undoes the effect of one call to acpi_register_gsi().
 164 * If this matches the last registration, any IRQ resources for gsi
 165 * are freed.
 166 */
 167void acpi_unregister_gsi (u32 gsi);
 168
 169struct pci_dev;
 170
 171int acpi_pci_irq_enable (struct pci_dev *dev);
 172void acpi_penalize_isa_irq(int irq, int active);
 173
 174void acpi_pci_irq_disable (struct pci_dev *dev);
 175
 176extern int ec_read(u8 addr, u8 *val);
 177extern int ec_write(u8 addr, u8 val);
 178extern int ec_transaction(u8 command,
 179                          const u8 *wdata, unsigned wdata_len,
 180                          u8 *rdata, unsigned rdata_len);
 181extern acpi_handle ec_get_handle(void);
 182
 183#if defined(CONFIG_ACPI_WMI) || defined(CONFIG_ACPI_WMI_MODULE)
 184
 185typedef void (*wmi_notify_handler) (u32 value, void *context);
 186
 187extern acpi_status wmi_evaluate_method(const char *guid, u8 instance,
 188                                        u32 method_id,
 189                                        const struct acpi_buffer *in,
 190                                        struct acpi_buffer *out);
 191extern acpi_status wmi_query_block(const char *guid, u8 instance,
 192                                        struct acpi_buffer *out);
 193extern acpi_status wmi_set_block(const char *guid, u8 instance,
 194                                        const struct acpi_buffer *in);
 195extern acpi_status wmi_install_notify_handler(const char *guid,
 196                                        wmi_notify_handler handler, void *data);
 197extern acpi_status wmi_remove_notify_handler(const char *guid);
 198extern acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out);
 199extern bool wmi_has_guid(const char *guid);
 200
 201#endif  /* CONFIG_ACPI_WMI */
 202
 203#define ACPI_VIDEO_OUTPUT_SWITCHING                     0x0001
 204#define ACPI_VIDEO_DEVICE_POSTING                       0x0002
 205#define ACPI_VIDEO_ROM_AVAILABLE                        0x0004
 206#define ACPI_VIDEO_BACKLIGHT                            0x0008
 207#define ACPI_VIDEO_BACKLIGHT_FORCE_VENDOR               0x0010
 208#define ACPI_VIDEO_BACKLIGHT_FORCE_VIDEO                0x0020
 209#define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VENDOR        0x0040
 210#define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO         0x0080
 211#define ACPI_VIDEO_BACKLIGHT_DMI_VENDOR                 0x0100
 212#define ACPI_VIDEO_BACKLIGHT_DMI_VIDEO                  0x0200
 213#define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR          0x0400
 214#define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VIDEO           0x0800
 215
 216#if defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE)
 217
 218extern long acpi_video_get_capabilities(acpi_handle graphics_dev_handle);
 219extern long acpi_is_video_device(acpi_handle handle);
 220extern void acpi_video_dmi_promote_vendor(void);
 221extern void acpi_video_dmi_demote_vendor(void);
 222extern int acpi_video_backlight_support(void);
 223extern int acpi_video_display_switch_support(void);
 224
 225#else
 226
 227static inline long acpi_video_get_capabilities(acpi_handle graphics_dev_handle)
 228{
 229        return 0;
 230}
 231
 232static inline long acpi_is_video_device(acpi_handle handle)
 233{
 234        return 0;
 235}
 236
 237static inline void acpi_video_dmi_promote_vendor(void)
 238{
 239}
 240
 241static inline void acpi_video_dmi_demote_vendor(void)
 242{
 243}
 244
 245static inline int acpi_video_backlight_support(void)
 246{
 247        return 0;
 248}
 249
 250static inline int acpi_video_display_switch_support(void)
 251{
 252        return 0;
 253}
 254
 255#endif /* defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE) */
 256
 257extern int acpi_blacklisted(void);
 258extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
 259extern void acpi_osi_setup(char *str);
 260
 261#ifdef CONFIG_ACPI_NUMA
 262int acpi_get_pxm(acpi_handle handle);
 263int acpi_get_node(acpi_handle *handle);
 264#else
 265static inline int acpi_get_pxm(acpi_handle handle)
 266{
 267        return 0;
 268}
 269static inline int acpi_get_node(acpi_handle *handle)
 270{
 271        return 0;
 272}
 273#endif
 274extern int acpi_paddr_to_node(u64 start_addr, u64 size);
 275
 276extern int pnpacpi_disabled;
 277
 278#define PXM_INVAL       (-1)
 279
 280bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res);
 281bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res);
 282bool acpi_dev_resource_address_space(struct acpi_resource *ares,
 283                                     struct resource *res);
 284bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares,
 285                                         struct resource *res);
 286unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable);
 287bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index,
 288                                 struct resource *res);
 289
 290struct resource_list_entry {
 291        struct list_head node;
 292        struct resource res;
 293};
 294
 295void acpi_dev_free_resource_list(struct list_head *list);
 296int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list,
 297                           int (*preproc)(struct acpi_resource *, void *),
 298                           void *preproc_data);
 299
 300int acpi_check_resource_conflict(const struct resource *res);
 301
 302int acpi_check_region(resource_size_t start, resource_size_t n,
 303                      const char *name);
 304
 305int acpi_resources_are_enforced(void);
 306
 307#ifdef CONFIG_HIBERNATION
 308void __init acpi_no_s4_hw_signature(void);
 309#endif
 310
 311#ifdef CONFIG_PM_SLEEP
 312void __init acpi_old_suspend_ordering(void);
 313void __init acpi_nvs_nosave(void);
 314void __init acpi_nvs_nosave_s3(void);
 315#endif /* CONFIG_PM_SLEEP */
 316
 317struct acpi_osc_context {
 318        char *uuid_str;                 /* UUID string */
 319        int rev;
 320        struct acpi_buffer cap;         /* list of DWORD capabilities */
 321        struct acpi_buffer ret;         /* free by caller if success */
 322};
 323
 324acpi_status acpi_str_to_uuid(char *str, u8 *uuid);
 325acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
 326
 327/* Indexes into _OSC Capabilities Buffer (DWORDs 2 & 3 are device-specific) */
 328#define OSC_QUERY_DWORD                         0       /* DWORD 1 */
 329#define OSC_SUPPORT_DWORD                       1       /* DWORD 2 */
 330#define OSC_CONTROL_DWORD                       2       /* DWORD 3 */
 331
 332/* _OSC Capabilities DWORD 1: Query/Control and Error Returns (generic) */
 333#define OSC_QUERY_ENABLE                        0x00000001  /* input */
 334#define OSC_REQUEST_ERROR                       0x00000002  /* return */
 335#define OSC_INVALID_UUID_ERROR                  0x00000004  /* return */
 336#define OSC_INVALID_REVISION_ERROR              0x00000008  /* return */
 337#define OSC_CAPABILITIES_MASK_ERROR             0x00000010  /* return */
 338
 339/* Platform-Wide Capabilities _OSC: Capabilities DWORD 2: Support Field */
 340#define OSC_SB_PAD_SUPPORT                      0x00000001
 341#define OSC_SB_PPC_OST_SUPPORT                  0x00000002
 342#define OSC_SB_PR3_SUPPORT                      0x00000004
 343#define OSC_SB_HOTPLUG_OST_SUPPORT              0x00000008
 344#define OSC_SB_APEI_SUPPORT                     0x00000010
 345#define OSC_SB_CPC_SUPPORT                      0x00000020
 346
 347extern bool osc_sb_apei_support_acked;
 348
 349/* PCI Host Bridge _OSC: Capabilities DWORD 2: Support Field */
 350#define OSC_PCI_EXT_CONFIG_SUPPORT              0x00000001
 351#define OSC_PCI_ASPM_SUPPORT                    0x00000002
 352#define OSC_PCI_CLOCK_PM_SUPPORT                0x00000004
 353#define OSC_PCI_SEGMENT_GROUPS_SUPPORT          0x00000008
 354#define OSC_PCI_MSI_SUPPORT                     0x00000010
 355#define OSC_PCI_SUPPORT_MASKS                   0x0000001f
 356
 357/* PCI Host Bridge _OSC: Capabilities DWORD 3: Control Field */
 358#define OSC_PCI_EXPRESS_NATIVE_HP_CONTROL       0x00000001
 359#define OSC_PCI_SHPC_NATIVE_HP_CONTROL          0x00000002
 360#define OSC_PCI_EXPRESS_PME_CONTROL             0x00000004
 361#define OSC_PCI_EXPRESS_AER_CONTROL             0x00000008
 362#define OSC_PCI_EXPRESS_CAPABILITY_CONTROL      0x00000010
 363#define OSC_PCI_CONTROL_MASKS                   0x0000001f
 364
 365extern acpi_status acpi_pci_osc_control_set(acpi_handle handle,
 366                                             u32 *mask, u32 req);
 367
 368/* Enable _OST when all relevant hotplug operations are enabled */
 369#if defined(CONFIG_ACPI_HOTPLUG_CPU) &&                 \
 370        defined(CONFIG_ACPI_HOTPLUG_MEMORY) &&          \
 371        defined(CONFIG_ACPI_CONTAINER)
 372#define ACPI_HOTPLUG_OST
 373#endif
 374
 375/* _OST Source Event Code (OSPM Action) */
 376#define ACPI_OST_EC_OSPM_SHUTDOWN               0x100
 377#define ACPI_OST_EC_OSPM_EJECT                  0x103
 378#define ACPI_OST_EC_OSPM_INSERTION              0x200
 379
 380/* _OST General Processing Status Code */
 381#define ACPI_OST_SC_SUCCESS                     0x0
 382#define ACPI_OST_SC_NON_SPECIFIC_FAILURE        0x1
 383#define ACPI_OST_SC_UNRECOGNIZED_NOTIFY         0x2
 384
 385/* _OST OS Shutdown Processing (0x100) Status Code */
 386#define ACPI_OST_SC_OS_SHUTDOWN_DENIED          0x80
 387#define ACPI_OST_SC_OS_SHUTDOWN_IN_PROGRESS     0x81
 388#define ACPI_OST_SC_OS_SHUTDOWN_COMPLETED       0x82
 389#define ACPI_OST_SC_OS_SHUTDOWN_NOT_SUPPORTED   0x83
 390
 391/* _OST Ejection Request (0x3, 0x103) Status Code */
 392#define ACPI_OST_SC_EJECT_NOT_SUPPORTED         0x80
 393#define ACPI_OST_SC_DEVICE_IN_USE               0x81
 394#define ACPI_OST_SC_DEVICE_BUSY                 0x82
 395#define ACPI_OST_SC_EJECT_DEPENDENCY_BUSY       0x83
 396#define ACPI_OST_SC_EJECT_IN_PROGRESS           0x84
 397
 398/* _OST Insertion Request (0x200) Status Code */
 399#define ACPI_OST_SC_INSERT_IN_PROGRESS          0x80
 400#define ACPI_OST_SC_DRIVER_LOAD_FAILURE         0x81
 401#define ACPI_OST_SC_INSERT_NOT_SUPPORTED        0x82
 402
 403extern void acpi_early_init(void);
 404
 405extern int acpi_nvs_register(__u64 start, __u64 size);
 406
 407extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
 408                                    void *data);
 409
 410const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
 411                                               const struct device *dev);
 412
 413static inline bool acpi_driver_match_device(struct device *dev,
 414                                            const struct device_driver *drv)
 415{
 416        return !!acpi_match_device(drv->acpi_match_table, dev);
 417}
 418
 419int acpi_device_uevent_modalias(struct device *, struct kobj_uevent_env *);
 420int acpi_device_modalias(struct device *, char *, int);
 421
 422#define ACPI_PTR(_ptr)  (_ptr)
 423
 424#else   /* !CONFIG_ACPI */
 425
 426#define acpi_disabled 1
 427
 428#define ACPI_COMPANION(dev)             (NULL)
 429#define ACPI_COMPANION_SET(dev, adev)   do { } while (0)
 430#define ACPI_HANDLE(dev)                (NULL)
 431
 432static inline const char *acpi_dev_name(struct acpi_device *adev)
 433{
 434        return NULL;
 435}
 436
 437static inline void acpi_early_init(void) { }
 438
 439static inline int early_acpi_boot_init(void)
 440{
 441        return 0;
 442}
 443static inline int acpi_boot_init(void)
 444{
 445        return 0;
 446}
 447
 448static inline void acpi_boot_table_init(void)
 449{
 450        return;
 451}
 452
 453static inline int acpi_mps_check(void)
 454{
 455        return 0;
 456}
 457
 458static inline int acpi_check_resource_conflict(struct resource *res)
 459{
 460        return 0;
 461}
 462
 463static inline int acpi_check_region(resource_size_t start, resource_size_t n,
 464                                    const char *name)
 465{
 466        return 0;
 467}
 468
 469struct acpi_table_header;
 470static inline int acpi_table_parse(char *id,
 471                                int (*handler)(struct acpi_table_header *))
 472{
 473        return -ENODEV;
 474}
 475
 476static inline int acpi_nvs_register(__u64 start, __u64 size)
 477{
 478        return 0;
 479}
 480
 481static inline int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
 482                                           void *data)
 483{
 484        return 0;
 485}
 486
 487struct acpi_device_id;
 488
 489static inline const struct acpi_device_id *acpi_match_device(
 490        const struct acpi_device_id *ids, const struct device *dev)
 491{
 492        return NULL;
 493}
 494
 495static inline bool acpi_driver_match_device(struct device *dev,
 496                                            const struct device_driver *drv)
 497{
 498        return false;
 499}
 500
 501static inline int acpi_device_uevent_modalias(struct device *dev,
 502                                struct kobj_uevent_env *env)
 503{
 504        return -ENODEV;
 505}
 506
 507static inline int acpi_device_modalias(struct device *dev,
 508                                char *buf, int size)
 509{
 510        return -ENODEV;
 511}
 512
 513#define ACPI_PTR(_ptr)  (NULL)
 514
 515#endif  /* !CONFIG_ACPI */
 516
 517#ifdef CONFIG_ACPI
 518void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state,
 519                               u32 pm1a_ctrl,  u32 pm1b_ctrl));
 520
 521acpi_status acpi_os_prepare_sleep(u8 sleep_state,
 522                                  u32 pm1a_control, u32 pm1b_control);
 523
 524void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state,
 525                                        u32 val_a,  u32 val_b));
 526
 527acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state,
 528                                           u32 val_a, u32 val_b);
 529
 530#ifdef CONFIG_X86
 531void arch_reserve_mem_area(acpi_physical_address addr, size_t size);
 532#else
 533static inline void arch_reserve_mem_area(acpi_physical_address addr,
 534                                          size_t size)
 535{
 536}
 537#endif /* CONFIG_X86 */
 538#else
 539#define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0)
 540#endif
 541
 542#if defined(CONFIG_ACPI) && defined(CONFIG_PM_RUNTIME)
 543int acpi_dev_runtime_suspend(struct device *dev);
 544int acpi_dev_runtime_resume(struct device *dev);
 545int acpi_subsys_runtime_suspend(struct device *dev);
 546int acpi_subsys_runtime_resume(struct device *dev);
 547#else
 548static inline int acpi_dev_runtime_suspend(struct device *dev) { return 0; }
 549static inline int acpi_dev_runtime_resume(struct device *dev) { return 0; }
 550static inline int acpi_subsys_runtime_suspend(struct device *dev) { return 0; }
 551static inline int acpi_subsys_runtime_resume(struct device *dev) { return 0; }
 552#endif
 553
 554#if defined(CONFIG_ACPI) && defined(CONFIG_PM_SLEEP)
 555int acpi_dev_suspend_late(struct device *dev);
 556int acpi_dev_resume_early(struct device *dev);
 557int acpi_subsys_prepare(struct device *dev);
 558int acpi_subsys_suspend_late(struct device *dev);
 559int acpi_subsys_resume_early(struct device *dev);
 560#else
 561static inline int acpi_dev_suspend_late(struct device *dev) { return 0; }
 562static inline int acpi_dev_resume_early(struct device *dev) { return 0; }
 563static inline int acpi_subsys_prepare(struct device *dev) { return 0; }
 564static inline int acpi_subsys_suspend_late(struct device *dev) { return 0; }
 565static inline int acpi_subsys_resume_early(struct device *dev) { return 0; }
 566#endif
 567
 568#if defined(CONFIG_ACPI) && defined(CONFIG_PM)
 569struct acpi_device *acpi_dev_pm_get_node(struct device *dev);
 570int acpi_dev_pm_attach(struct device *dev, bool power_on);
 571void acpi_dev_pm_detach(struct device *dev, bool power_off);
 572#else
 573static inline struct acpi_device *acpi_dev_pm_get_node(struct device *dev)
 574{
 575        return NULL;
 576}
 577static inline int acpi_dev_pm_attach(struct device *dev, bool power_on)
 578{
 579        return -ENODEV;
 580}
 581static inline void acpi_dev_pm_detach(struct device *dev, bool power_off) {}
 582#endif
 583
 584#ifdef CONFIG_ACPI
 585__printf(3, 4)
 586void acpi_handle_printk(const char *level, acpi_handle handle,
 587                        const char *fmt, ...);
 588#else   /* !CONFIG_ACPI */
 589static inline __printf(3, 4) void
 590acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {}
 591#endif  /* !CONFIG_ACPI */
 592
 593/*
 594 * acpi_handle_<level>: Print message with ACPI prefix and object path
 595 *
 596 * These interfaces acquire the global namespace mutex to obtain an object
 597 * path.  In interrupt context, it shows the object path as <n/a>.
 598 */
 599#define acpi_handle_emerg(handle, fmt, ...)                             \
 600        acpi_handle_printk(KERN_EMERG, handle, fmt, ##__VA_ARGS__)
 601#define acpi_handle_alert(handle, fmt, ...)                             \
 602        acpi_handle_printk(KERN_ALERT, handle, fmt, ##__VA_ARGS__)
 603#define acpi_handle_crit(handle, fmt, ...)                              \
 604        acpi_handle_printk(KERN_CRIT, handle, fmt, ##__VA_ARGS__)
 605#define acpi_handle_err(handle, fmt, ...)                               \
 606        acpi_handle_printk(KERN_ERR, handle, fmt, ##__VA_ARGS__)
 607#define acpi_handle_warn(handle, fmt, ...)                              \
 608        acpi_handle_printk(KERN_WARNING, handle, fmt, ##__VA_ARGS__)
 609#define acpi_handle_notice(handle, fmt, ...)                            \
 610        acpi_handle_printk(KERN_NOTICE, handle, fmt, ##__VA_ARGS__)
 611#define acpi_handle_info(handle, fmt, ...)                              \
 612        acpi_handle_printk(KERN_INFO, handle, fmt, ##__VA_ARGS__)
 613
 614/* REVISIT: Support CONFIG_DYNAMIC_DEBUG when necessary */
 615#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
 616#define acpi_handle_debug(handle, fmt, ...)                             \
 617        acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__)
 618#else
 619#define acpi_handle_debug(handle, fmt, ...)                             \
 620({                                                                      \
 621        if (0)                                                          \
 622                acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__); \
 623        0;                                                              \
 624})
 625#endif
 626
 627#endif  /*_LINUX_ACPI_H*/
 628