11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * acpi_bus.h - ACPI Bus Driver ($Revision: 22 $) 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> 51da177e4SLinus Torvalds * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> 61da177e4SLinus Torvalds * 71da177e4SLinus Torvalds * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify 101da177e4SLinus Torvalds * it under the terms of the GNU General Public License as published by 111da177e4SLinus Torvalds * the Free Software Foundation; either version 2 of the License, or (at 121da177e4SLinus Torvalds * your option) any later version. 131da177e4SLinus Torvalds * 141da177e4SLinus Torvalds * This program is distributed in the hope that it will be useful, but 151da177e4SLinus Torvalds * WITHOUT ANY WARRANTY; without even the implied warranty of 161da177e4SLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 171da177e4SLinus Torvalds * General Public License for more details. 181da177e4SLinus Torvalds * 191da177e4SLinus Torvalds * You should have received a copy of the GNU General Public License along 201da177e4SLinus Torvalds * with this program; if not, write to the Free Software Foundation, Inc., 211da177e4SLinus Torvalds * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. 221da177e4SLinus Torvalds * 231da177e4SLinus Torvalds * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 241da177e4SLinus Torvalds */ 251da177e4SLinus Torvalds 261da177e4SLinus Torvalds #ifndef __ACPI_BUS_H__ 271da177e4SLinus Torvalds #define __ACPI_BUS_H__ 281da177e4SLinus Torvalds 295b327265SPatrick Mochel #include <linux/device.h> 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds #include <acpi/acpi.h> 321da177e4SLinus Torvalds 331da177e4SLinus Torvalds /* TBD: Make dynamic */ 341da177e4SLinus Torvalds #define ACPI_MAX_HANDLES 10 351da177e4SLinus Torvalds struct acpi_handle_list { 361da177e4SLinus Torvalds u32 count; 371da177e4SLinus Torvalds acpi_handle handles[ACPI_MAX_HANDLES]; 381da177e4SLinus Torvalds }; 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds /* acpi_utils.h */ 411da177e4SLinus Torvalds acpi_status 424be44fcdSLen Brown acpi_extract_package(union acpi_object *package, 434be44fcdSLen Brown struct acpi_buffer *format, struct acpi_buffer *buffer); 441da177e4SLinus Torvalds acpi_status 454be44fcdSLen Brown acpi_evaluate_integer(acpi_handle handle, 461da177e4SLinus Torvalds acpi_string pathname, 4727663c58SMatthew Wilcox struct acpi_object_list *arguments, unsigned long long *data); 481da177e4SLinus Torvalds acpi_status 494be44fcdSLen Brown acpi_evaluate_reference(acpi_handle handle, 501da177e4SLinus Torvalds acpi_string pathname, 511da177e4SLinus Torvalds struct acpi_object_list *arguments, 521da177e4SLinus Torvalds struct acpi_handle_list *list); 531da177e4SLinus Torvalds 5476f58584SLen Brown #ifdef CONFIG_ACPI 551da177e4SLinus Torvalds 561da177e4SLinus Torvalds #include <linux/proc_fs.h> 571da177e4SLinus Torvalds 581da177e4SLinus Torvalds #define ACPI_BUS_FILE_ROOT "acpi" 591da177e4SLinus Torvalds extern struct proc_dir_entry *acpi_root_dir; 601da177e4SLinus Torvalds 611da177e4SLinus Torvalds enum acpi_bus_removal_type { 621da177e4SLinus Torvalds ACPI_BUS_REMOVAL_NORMAL = 0, 631da177e4SLinus Torvalds ACPI_BUS_REMOVAL_EJECT, 641da177e4SLinus Torvalds ACPI_BUS_REMOVAL_SUPRISE, 651da177e4SLinus Torvalds ACPI_BUS_REMOVAL_TYPE_COUNT 661da177e4SLinus Torvalds }; 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds enum acpi_bus_device_type { 691da177e4SLinus Torvalds ACPI_BUS_TYPE_DEVICE = 0, 701da177e4SLinus Torvalds ACPI_BUS_TYPE_POWER, 711da177e4SLinus Torvalds ACPI_BUS_TYPE_PROCESSOR, 721da177e4SLinus Torvalds ACPI_BUS_TYPE_THERMAL, 731da177e4SLinus Torvalds ACPI_BUS_TYPE_POWER_BUTTON, 741da177e4SLinus Torvalds ACPI_BUS_TYPE_SLEEP_BUTTON, 751da177e4SLinus Torvalds ACPI_BUS_DEVICE_TYPE_COUNT 761da177e4SLinus Torvalds }; 771da177e4SLinus Torvalds 781da177e4SLinus Torvalds struct acpi_driver; 791da177e4SLinus Torvalds struct acpi_device; 801da177e4SLinus Torvalds 811da177e4SLinus Torvalds /* 821da177e4SLinus Torvalds * ACPI Driver 831da177e4SLinus Torvalds * ----------- 841da177e4SLinus Torvalds */ 851da177e4SLinus Torvalds 861da177e4SLinus Torvalds typedef int (*acpi_op_add) (struct acpi_device * device); 871da177e4SLinus Torvalds typedef int (*acpi_op_remove) (struct acpi_device * device, int type); 881da177e4SLinus Torvalds typedef int (*acpi_op_start) (struct acpi_device * device); 89fd350943SLen Brown typedef int (*acpi_op_suspend) (struct acpi_device * device, 90fd350943SLen Brown pm_message_t state); 915d9464a4SPatrick Mochel typedef int (*acpi_op_resume) (struct acpi_device * device); 921da177e4SLinus Torvalds typedef int (*acpi_op_bind) (struct acpi_device * device); 931da177e4SLinus Torvalds typedef int (*acpi_op_unbind) (struct acpi_device * device); 9446ec8598SBjorn Helgaas typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event); 951da177e4SLinus Torvalds 963fb02738SRajesh Shah struct acpi_bus_ops { 973fb02738SRajesh Shah u32 acpi_op_add:1; 983fb02738SRajesh Shah u32 acpi_op_start:1; 993fb02738SRajesh Shah }; 1003fb02738SRajesh Shah 1011da177e4SLinus Torvalds struct acpi_device_ops { 1021da177e4SLinus Torvalds acpi_op_add add; 1031da177e4SLinus Torvalds acpi_op_remove remove; 1041da177e4SLinus Torvalds acpi_op_start start; 1051da177e4SLinus Torvalds acpi_op_suspend suspend; 1061da177e4SLinus Torvalds acpi_op_resume resume; 1071da177e4SLinus Torvalds acpi_op_bind bind; 1081da177e4SLinus Torvalds acpi_op_unbind unbind; 10946ec8598SBjorn Helgaas acpi_op_notify notify; 1101da177e4SLinus Torvalds }; 1111da177e4SLinus Torvalds 1126d278131SBjorn Helgaas #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */ 1136d278131SBjorn Helgaas 1141da177e4SLinus Torvalds struct acpi_driver { 1151da177e4SLinus Torvalds char name[80]; 1161da177e4SLinus Torvalds char class[80]; 1178c8eb78fSThomas Renninger const struct acpi_device_id *ids; /* Supported Hardware IDs */ 1186d278131SBjorn Helgaas unsigned int flags; 1191da177e4SLinus Torvalds struct acpi_device_ops ops; 120d43ec68eSPatrick Mochel struct device_driver drv; 1211890a97aSPatrick Mochel struct module *owner; 1221da177e4SLinus Torvalds }; 1231da177e4SLinus Torvalds 1241da177e4SLinus Torvalds /* 1251da177e4SLinus Torvalds * ACPI Device 1261da177e4SLinus Torvalds * ----------- 1271da177e4SLinus Torvalds */ 1281da177e4SLinus Torvalds 1291da177e4SLinus Torvalds /* Status (_STA) */ 1301da177e4SLinus Torvalds 1311da177e4SLinus Torvalds struct acpi_device_status { 1321da177e4SLinus Torvalds u32 present:1; 1331da177e4SLinus Torvalds u32 enabled:1; 1341da177e4SLinus Torvalds u32 show_in_ui:1; 1351da177e4SLinus Torvalds u32 functional:1; 1361da177e4SLinus Torvalds u32 battery_present:1; 1371da177e4SLinus Torvalds u32 reserved:27; 1381da177e4SLinus Torvalds }; 1391da177e4SLinus Torvalds 1401da177e4SLinus Torvalds /* Flags */ 1411da177e4SLinus Torvalds 1421da177e4SLinus Torvalds struct acpi_device_flags { 1431da177e4SLinus Torvalds u32 dynamic_status:1; 1441da177e4SLinus Torvalds u32 bus_address:1; 1451da177e4SLinus Torvalds u32 removable:1; 1461da177e4SLinus Torvalds u32 ejectable:1; 1471da177e4SLinus Torvalds u32 lockable:1; 1481da177e4SLinus Torvalds u32 suprise_removal_ok:1; 1491da177e4SLinus Torvalds u32 power_manageable:1; 1501da177e4SLinus Torvalds u32 performance_manageable:1; 151d57d09a4SRafael J. Wysocki u32 reserved:24; 1521da177e4SLinus Torvalds }; 1531da177e4SLinus Torvalds 1541da177e4SLinus Torvalds /* File System */ 1551da177e4SLinus Torvalds 1561da177e4SLinus Torvalds struct acpi_device_dir { 1571da177e4SLinus Torvalds struct proc_dir_entry *entry; 1581da177e4SLinus Torvalds }; 1591da177e4SLinus Torvalds 1601da177e4SLinus Torvalds #define acpi_device_dir(d) ((d)->dir.entry) 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds /* Plug and Play */ 1631da177e4SLinus Torvalds 16424c5c4c2SZhao Yakui typedef char acpi_bus_id[8]; 1651da177e4SLinus Torvalds typedef unsigned long acpi_bus_address; 1661da177e4SLinus Torvalds typedef char acpi_device_name[40]; 1671da177e4SLinus Torvalds typedef char acpi_device_class[20]; 1681da177e4SLinus Torvalds 1697f47fa6cSBjorn Helgaas struct acpi_hardware_id { 1707f47fa6cSBjorn Helgaas struct list_head list; 1717f47fa6cSBjorn Helgaas char *id; 1727f47fa6cSBjorn Helgaas }; 1737f47fa6cSBjorn Helgaas 1741da177e4SLinus Torvalds struct acpi_device_pnp { 1751da177e4SLinus Torvalds acpi_bus_id bus_id; /* Object name */ 1761da177e4SLinus Torvalds acpi_bus_address bus_address; /* _ADR */ 17715b8dd53SBob Moore char *unique_id; /* _UID */ 1787f47fa6cSBjorn Helgaas struct list_head ids; /* _HID and _CIDs */ 1791da177e4SLinus Torvalds acpi_device_name device_name; /* Driver-determined */ 1801da177e4SLinus Torvalds acpi_device_class device_class; /* " */ 1811da177e4SLinus Torvalds }; 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds #define acpi_device_bid(d) ((d)->pnp.bus_id) 1841da177e4SLinus Torvalds #define acpi_device_adr(d) ((d)->pnp.bus_address) 185620e112cSThomas Renninger const char *acpi_device_hid(struct acpi_device *device); 1861da177e4SLinus Torvalds #define acpi_device_name(d) ((d)->pnp.device_name) 1871da177e4SLinus Torvalds #define acpi_device_class(d) ((d)->pnp.device_class) 1881da177e4SLinus Torvalds 1891da177e4SLinus Torvalds /* Power Management */ 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds struct acpi_device_power_flags { 1921da177e4SLinus Torvalds u32 explicit_get:1; /* _PSC present? */ 1931da177e4SLinus Torvalds u32 power_resources:1; /* Power resources */ 1941da177e4SLinus Torvalds u32 inrush_current:1; /* Serialize Dx->D0 */ 1951da177e4SLinus Torvalds u32 power_removed:1; /* Optimize Dx->D0 */ 1961da177e4SLinus Torvalds u32 reserved:28; 1971da177e4SLinus Torvalds }; 1981da177e4SLinus Torvalds 1991da177e4SLinus Torvalds struct acpi_device_power_state { 2001da177e4SLinus Torvalds struct { 2011da177e4SLinus Torvalds u8 valid:1; 2021da177e4SLinus Torvalds u8 explicit_set:1; /* _PSx present? */ 2031da177e4SLinus Torvalds u8 reserved:6; 2041da177e4SLinus Torvalds } flags; 2051da177e4SLinus Torvalds int power; /* % Power (compared to D0) */ 2061da177e4SLinus Torvalds int latency; /* Dx->D0 time (microseconds) */ 2071da177e4SLinus Torvalds struct acpi_handle_list resources; /* Power resources referenced */ 2081da177e4SLinus Torvalds }; 2091da177e4SLinus Torvalds 2101da177e4SLinus Torvalds struct acpi_device_power { 2111da177e4SLinus Torvalds int state; /* Current state */ 2121da177e4SLinus Torvalds struct acpi_device_power_flags flags; 213b4a03b9aSLin Ming struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */ 2141da177e4SLinus Torvalds }; 2151da177e4SLinus Torvalds 2161da177e4SLinus Torvalds /* Performance Management */ 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds struct acpi_device_perf_flags { 2191da177e4SLinus Torvalds u8 reserved:8; 2201da177e4SLinus Torvalds }; 2211da177e4SLinus Torvalds 2221da177e4SLinus Torvalds struct acpi_device_perf_state { 2231da177e4SLinus Torvalds struct { 2241da177e4SLinus Torvalds u8 valid:1; 2251da177e4SLinus Torvalds u8 reserved:7; 2261da177e4SLinus Torvalds } flags; 2271da177e4SLinus Torvalds u8 power; /* % Power (compared to P0) */ 2281da177e4SLinus Torvalds u8 performance; /* % Performance ( " ) */ 2291da177e4SLinus Torvalds int latency; /* Px->P0 time (microseconds) */ 2301da177e4SLinus Torvalds }; 2311da177e4SLinus Torvalds 2321da177e4SLinus Torvalds struct acpi_device_perf { 2331da177e4SLinus Torvalds int state; 2341da177e4SLinus Torvalds struct acpi_device_perf_flags flags; 2351da177e4SLinus Torvalds int state_count; 2361da177e4SLinus Torvalds struct acpi_device_perf_state *states; 2371da177e4SLinus Torvalds }; 2381da177e4SLinus Torvalds 2391da177e4SLinus Torvalds /* Wakeup Management */ 2401da177e4SLinus Torvalds struct acpi_device_wakeup_flags { 2411da177e4SLinus Torvalds u8 valid:1; /* Can successfully enable wakeup? */ 2421da177e4SLinus Torvalds u8 run_wake:1; /* Run-Wake GPE devices */ 243b67ea761SRafael J. Wysocki u8 notifier_present:1; /* Wake-up notify handler has been installed */ 2441da177e4SLinus Torvalds }; 2451da177e4SLinus Torvalds 2461da177e4SLinus Torvalds struct acpi_device_wakeup { 2471da177e4SLinus Torvalds acpi_handle gpe_device; 248439913ffSLin Ming u64 gpe_number; 249439913ffSLin Ming u64 sleep_state; 2501da177e4SLinus Torvalds struct acpi_handle_list resources; 2511da177e4SLinus Torvalds struct acpi_device_wakeup_flags flags; 2529b83ccd2SRafael J. Wysocki int prepare_count; 2531da177e4SLinus Torvalds }; 2541da177e4SLinus Torvalds 2551da177e4SLinus Torvalds /* Device */ 2561da177e4SLinus Torvalds 2571da177e4SLinus Torvalds struct acpi_device { 258caaa6efbSBjorn Helgaas int device_type; 259caaa6efbSBjorn Helgaas acpi_handle handle; /* no handle for fixed hardware */ 2601da177e4SLinus Torvalds struct acpi_device *parent; 2611da177e4SLinus Torvalds struct list_head children; 2621da177e4SLinus Torvalds struct list_head node; 2631da177e4SLinus Torvalds struct list_head wakeup_list; 2641da177e4SLinus Torvalds struct acpi_device_status status; 2651da177e4SLinus Torvalds struct acpi_device_flags flags; 2661da177e4SLinus Torvalds struct acpi_device_pnp pnp; 2671da177e4SLinus Torvalds struct acpi_device_power power; 2681da177e4SLinus Torvalds struct acpi_device_wakeup wakeup; 2691da177e4SLinus Torvalds struct acpi_device_perf performance; 2701da177e4SLinus Torvalds struct acpi_device_dir dir; 2711da177e4SLinus Torvalds struct acpi_device_ops ops; 2721da177e4SLinus Torvalds struct acpi_driver *driver; 2731da177e4SLinus Torvalds void *driver_data; 2745b327265SPatrick Mochel struct device dev; 275c4168bffSLi Shaohua struct acpi_bus_ops bus_ops; /* workaround for different code path for hotplug */ 27696333578SLi Shaohua enum acpi_bus_removal_type removal_type; /* indicate for different removal type */ 2771da177e4SLinus Torvalds }; 2781da177e4SLinus Torvalds 279db89b4f0SPavel Machek static inline void *acpi_driver_data(struct acpi_device *d) 280db89b4f0SPavel Machek { 281db89b4f0SPavel Machek return d->driver_data; 282db89b4f0SPavel Machek } 283db89b4f0SPavel Machek 284d43ec68eSPatrick Mochel #define to_acpi_device(d) container_of(d, struct acpi_device, dev) 285d43ec68eSPatrick Mochel #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) 2861da177e4SLinus Torvalds 28755955aadSDavid Brownell /* acpi_device.dev.bus == &acpi_bus_type */ 28855955aadSDavid Brownell extern struct bus_type acpi_bus_type; 28955955aadSDavid Brownell 2901da177e4SLinus Torvalds /* 2911da177e4SLinus Torvalds * Events 2921da177e4SLinus Torvalds * ------ 2931da177e4SLinus Torvalds */ 2941da177e4SLinus Torvalds 2951da177e4SLinus Torvalds struct acpi_bus_event { 2961da177e4SLinus Torvalds struct list_head node; 2971da177e4SLinus Torvalds acpi_device_class device_class; 2981da177e4SLinus Torvalds acpi_bus_id bus_id; 2991da177e4SLinus Torvalds u32 type; 3001da177e4SLinus Torvalds u32 data; 3011da177e4SLinus Torvalds }; 3021da177e4SLinus Torvalds 30399e0d2fcSGreg Kroah-Hartman extern struct kobject *acpi_kobj; 304962ce8caSZhang Rui extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); 3058e4319c4SBob Moore void acpi_bus_private_data_handler(acpi_handle, void *); 30620733939SZhang Rui int acpi_bus_get_private_data(acpi_handle, void **); 3079ee85241SZhang Rui extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); 3089ee85241SZhang Rui extern int register_acpi_notifier(struct notifier_block *); 3099ee85241SZhang Rui extern int unregister_acpi_notifier(struct notifier_block *); 3106bd00a61SShaohua Li 3116bd00a61SShaohua Li extern int register_acpi_bus_notifier(struct notifier_block *nb); 3126bd00a61SShaohua Li extern void unregister_acpi_bus_notifier(struct notifier_block *nb); 3131da177e4SLinus Torvalds /* 3141da177e4SLinus Torvalds * External Functions 3151da177e4SLinus Torvalds */ 3161da177e4SLinus Torvalds 3171da177e4SLinus Torvalds int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device); 3188e4319c4SBob Moore void acpi_bus_data_handler(acpi_handle handle, void *context); 319402ac536SBjorn Helgaas acpi_status acpi_bus_get_status_handle(acpi_handle handle, 320402ac536SBjorn Helgaas unsigned long long *sta); 3211da177e4SLinus Torvalds int acpi_bus_get_status(struct acpi_device *device); 3221da177e4SLinus Torvalds int acpi_bus_set_power(acpi_handle handle, int state); 32325eed407SRafael J. Wysocki int acpi_bus_update_power(acpi_handle handle, int *state_p); 3243737b2b1SRafael J. Wysocki bool acpi_bus_power_manageable(acpi_handle handle); 325eb9d0fe4SRafael J. Wysocki bool acpi_bus_can_wakeup(acpi_handle handle); 3260090def6SLin Ming int acpi_power_resource_register_device(struct device *dev, acpi_handle handle); 3270090def6SLin Ming void acpi_power_resource_unregister_device(struct device *dev, acpi_handle handle); 32814e04fb3SLen Brown #ifdef CONFIG_ACPI_PROC_EVENT 32914e04fb3SLen Brown int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data); 3308db85d4cSAlexey Starikovskiy int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data); 3311da177e4SLinus Torvalds int acpi_bus_receive_event(struct acpi_bus_event *event); 33214e04fb3SLen Brown #else 33314e04fb3SLen Brown static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data) 33414e04fb3SLen Brown { return 0; } 33514e04fb3SLen Brown #endif 3361da177e4SLinus Torvalds int acpi_bus_register_driver(struct acpi_driver *driver); 33706ea8e08SBjorn Helgaas void acpi_bus_unregister_driver(struct acpi_driver *driver); 3381da177e4SLinus Torvalds int acpi_bus_add(struct acpi_device **child, struct acpi_device *parent, 3391da177e4SLinus Torvalds acpi_handle handle, int type); 340ceaba663SKristen Accardi int acpi_bus_trim(struct acpi_device *start, int rmdevice); 3413fb02738SRajesh Shah int acpi_bus_start(struct acpi_device *device); 342c8f7a62cSLen Brown acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); 3438c8eb78fSThomas Renninger int acpi_match_device_ids(struct acpi_device *device, 3448c8eb78fSThomas Renninger const struct acpi_device_id *ids); 3451da177e4SLinus Torvalds int acpi_create_dir(struct acpi_device *); 3461da177e4SLinus Torvalds void acpi_remove_dir(struct acpi_device *); 3471da177e4SLinus Torvalds 3484e10d12aSDavid Shaohua Li /* 3494e10d12aSDavid Shaohua Li * Bind physical devices with ACPI devices 3504e10d12aSDavid Shaohua Li */ 3514e10d12aSDavid Shaohua Li struct acpi_bus_type { 3524e10d12aSDavid Shaohua Li struct list_head list; 3534e10d12aSDavid Shaohua Li struct bus_type *bus; 3544e10d12aSDavid Shaohua Li /* For general devices under the bus */ 3554e10d12aSDavid Shaohua Li int (*find_device) (struct device *, acpi_handle *); 3564e10d12aSDavid Shaohua Li /* For bridges, such as PCI root bridge, IDE controller */ 3574e10d12aSDavid Shaohua Li int (*find_bridge) (struct device *, acpi_handle *); 3584e10d12aSDavid Shaohua Li }; 3594e10d12aSDavid Shaohua Li int register_acpi_bus_type(struct acpi_bus_type *); 3604e10d12aSDavid Shaohua Li int unregister_acpi_bus_type(struct acpi_bus_type *); 3614e10d12aSDavid Shaohua Li struct device *acpi_get_physical_device(acpi_handle); 36222c13f9dSThomas Renninger 36376d56de5SAlex Chiang struct acpi_pci_root { 36476d56de5SAlex Chiang struct list_head node; 36576d56de5SAlex Chiang struct acpi_device * device; 36676d56de5SAlex Chiang struct acpi_pci_id id; 36776d56de5SAlex Chiang struct pci_bus *bus; 36876d56de5SAlex Chiang u16 segment; 3696ad95513SBjorn Helgaas struct resource secondary; /* downstream bus range */ 37076d56de5SAlex Chiang 37176d56de5SAlex Chiang u32 osc_support_set; /* _OSC state of support bits */ 37276d56de5SAlex Chiang u32 osc_control_set; /* _OSC state of control bits */ 37376d56de5SAlex Chiang }; 37476d56de5SAlex Chiang 3754e10d12aSDavid Shaohua Li /* helper */ 376439913ffSLin Ming acpi_handle acpi_get_child(acpi_handle, u64); 37727558203SAlexander Chiang int acpi_is_root_bridge(acpi_handle); 3784e10d12aSDavid Shaohua Li acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int); 37976d56de5SAlex Chiang struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); 380465ae641SBenjamin Herrenschmidt #define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle)) 3814e10d12aSDavid Shaohua Li 382b67ea761SRafael J. Wysocki int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state); 383b67ea761SRafael J. Wysocki int acpi_disable_wakeup_device_power(struct acpi_device *dev); 384b67ea761SRafael J. Wysocki 385aa338601SRafael J. Wysocki #ifdef CONFIG_PM 38606166780SDavid Brownell int acpi_pm_device_sleep_state(struct device *, int *); 387761afb86SRafael J. Wysocki #else 38806166780SDavid Brownell static inline int acpi_pm_device_sleep_state(struct device *d, int *p) 389296699deSRafael J. Wysocki { 390296699deSRafael J. Wysocki if (p) 391296699deSRafael J. Wysocki *p = ACPI_STATE_D0; 392296699deSRafael J. Wysocki return ACPI_STATE_D3; 393296699deSRafael J. Wysocki } 394761afb86SRafael J. Wysocki #endif 395761afb86SRafael J. Wysocki 396761afb86SRafael J. Wysocki #ifdef CONFIG_PM_SLEEP 397761afb86SRafael J. Wysocki int acpi_pm_device_sleep_wake(struct device *, bool); 398761afb86SRafael J. Wysocki #else 399f7a1b860SDavid Howells static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable) 400f7a1b860SDavid Howells { 401f7a1b860SDavid Howells return -ENODEV; 402f7a1b860SDavid Howells } 403761afb86SRafael J. Wysocki #endif 404fd4aff1aSShaohua Li 40576f58584SLen Brown #endif /* CONFIG_ACPI */ 4061da177e4SLinus Torvalds 4071da177e4SLinus Torvalds #endif /*__ACPI_BUS_H__*/ 408