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; 1511da177e4SLinus Torvalds u32 wake_capable:1; /* Wakeup(_PRW) supported? */ 152ec68373cSLen Brown u32 force_power_state:1; 1536622d8ceSBjorn Helgaas u32 reserved:22; 1541da177e4SLinus Torvalds }; 1551da177e4SLinus Torvalds 1561da177e4SLinus Torvalds /* File System */ 1571da177e4SLinus Torvalds 1581da177e4SLinus Torvalds struct acpi_device_dir { 1591da177e4SLinus Torvalds struct proc_dir_entry *entry; 1601da177e4SLinus Torvalds }; 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds #define acpi_device_dir(d) ((d)->dir.entry) 1631da177e4SLinus Torvalds 1641da177e4SLinus Torvalds /* Plug and Play */ 1651da177e4SLinus Torvalds 16624c5c4c2SZhao Yakui typedef char acpi_bus_id[8]; 1671da177e4SLinus Torvalds typedef unsigned long acpi_bus_address; 1681da177e4SLinus Torvalds typedef char acpi_device_name[40]; 1691da177e4SLinus Torvalds typedef char acpi_device_class[20]; 1701da177e4SLinus Torvalds 1717f47fa6cSBjorn Helgaas struct acpi_hardware_id { 1727f47fa6cSBjorn Helgaas struct list_head list; 1737f47fa6cSBjorn Helgaas char *id; 1747f47fa6cSBjorn Helgaas }; 1757f47fa6cSBjorn Helgaas 1761da177e4SLinus Torvalds struct acpi_device_pnp { 1771da177e4SLinus Torvalds acpi_bus_id bus_id; /* Object name */ 1781da177e4SLinus Torvalds acpi_bus_address bus_address; /* _ADR */ 17915b8dd53SBob Moore char *unique_id; /* _UID */ 1807f47fa6cSBjorn Helgaas struct list_head ids; /* _HID and _CIDs */ 1811da177e4SLinus Torvalds acpi_device_name device_name; /* Driver-determined */ 1821da177e4SLinus Torvalds acpi_device_class device_class; /* " */ 1831da177e4SLinus Torvalds }; 1841da177e4SLinus Torvalds 1851da177e4SLinus Torvalds #define acpi_device_bid(d) ((d)->pnp.bus_id) 1861da177e4SLinus Torvalds #define acpi_device_adr(d) ((d)->pnp.bus_address) 1877f47fa6cSBjorn Helgaas char *acpi_device_hid(struct acpi_device *device); 1881da177e4SLinus Torvalds #define acpi_device_name(d) ((d)->pnp.device_name) 1891da177e4SLinus Torvalds #define acpi_device_class(d) ((d)->pnp.device_class) 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds /* Power Management */ 1921da177e4SLinus Torvalds 1931da177e4SLinus Torvalds struct acpi_device_power_flags { 1941da177e4SLinus Torvalds u32 explicit_get:1; /* _PSC present? */ 1951da177e4SLinus Torvalds u32 power_resources:1; /* Power resources */ 1961da177e4SLinus Torvalds u32 inrush_current:1; /* Serialize Dx->D0 */ 1971da177e4SLinus Torvalds u32 power_removed:1; /* Optimize Dx->D0 */ 1981da177e4SLinus Torvalds u32 reserved:28; 1991da177e4SLinus Torvalds }; 2001da177e4SLinus Torvalds 2011da177e4SLinus Torvalds struct acpi_device_power_state { 2021da177e4SLinus Torvalds struct { 2031da177e4SLinus Torvalds u8 valid:1; 2041da177e4SLinus Torvalds u8 explicit_set:1; /* _PSx present? */ 2051da177e4SLinus Torvalds u8 reserved:6; 2061da177e4SLinus Torvalds } flags; 2071da177e4SLinus Torvalds int power; /* % Power (compared to D0) */ 2081da177e4SLinus Torvalds int latency; /* Dx->D0 time (microseconds) */ 2091da177e4SLinus Torvalds struct acpi_handle_list resources; /* Power resources referenced */ 2101da177e4SLinus Torvalds }; 2111da177e4SLinus Torvalds 2121da177e4SLinus Torvalds struct acpi_device_power { 2131da177e4SLinus Torvalds int state; /* Current state */ 2141da177e4SLinus Torvalds struct acpi_device_power_flags flags; 2151da177e4SLinus Torvalds struct acpi_device_power_state states[4]; /* Power states (D0-D3) */ 2161da177e4SLinus Torvalds }; 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds /* Performance Management */ 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds struct acpi_device_perf_flags { 2211da177e4SLinus Torvalds u8 reserved:8; 2221da177e4SLinus Torvalds }; 2231da177e4SLinus Torvalds 2241da177e4SLinus Torvalds struct acpi_device_perf_state { 2251da177e4SLinus Torvalds struct { 2261da177e4SLinus Torvalds u8 valid:1; 2271da177e4SLinus Torvalds u8 reserved:7; 2281da177e4SLinus Torvalds } flags; 2291da177e4SLinus Torvalds u8 power; /* % Power (compared to P0) */ 2301da177e4SLinus Torvalds u8 performance; /* % Performance ( " ) */ 2311da177e4SLinus Torvalds int latency; /* Px->P0 time (microseconds) */ 2321da177e4SLinus Torvalds }; 2331da177e4SLinus Torvalds 2341da177e4SLinus Torvalds struct acpi_device_perf { 2351da177e4SLinus Torvalds int state; 2361da177e4SLinus Torvalds struct acpi_device_perf_flags flags; 2371da177e4SLinus Torvalds int state_count; 2381da177e4SLinus Torvalds struct acpi_device_perf_state *states; 2391da177e4SLinus Torvalds }; 2401da177e4SLinus Torvalds 2411da177e4SLinus Torvalds /* Wakeup Management */ 2421da177e4SLinus Torvalds struct acpi_device_wakeup_flags { 2431da177e4SLinus Torvalds u8 valid:1; /* Can successfully enable wakeup? */ 2441da177e4SLinus Torvalds u8 run_wake:1; /* Run-Wake GPE devices */ 245f517709dSRafael J. Wysocki u8 always_enabled:1; /* Run-wake devices that are always enabled */ 2461da177e4SLinus Torvalds }; 2471da177e4SLinus Torvalds 2481da177e4SLinus Torvalds struct acpi_device_wakeup_state { 2491da177e4SLinus Torvalds u8 enabled:1; 2501da177e4SLinus Torvalds }; 2511da177e4SLinus Torvalds 2521da177e4SLinus Torvalds struct acpi_device_wakeup { 2531da177e4SLinus Torvalds acpi_handle gpe_device; 25453b3531bSAlexey Dobriyan acpi_integer gpe_number; 2551da177e4SLinus Torvalds acpi_integer sleep_state; 2561da177e4SLinus Torvalds struct acpi_handle_list resources; 2571da177e4SLinus Torvalds struct acpi_device_wakeup_state state; 2581da177e4SLinus Torvalds struct acpi_device_wakeup_flags flags; 2599b83ccd2SRafael J. Wysocki int prepare_count; 260f517709dSRafael J. Wysocki int run_wake_count; 2611da177e4SLinus Torvalds }; 2621da177e4SLinus Torvalds 2631da177e4SLinus Torvalds /* Device */ 2641da177e4SLinus Torvalds 2651da177e4SLinus Torvalds struct acpi_device { 266caaa6efbSBjorn Helgaas int device_type; 267caaa6efbSBjorn Helgaas acpi_handle handle; /* no handle for fixed hardware */ 2681da177e4SLinus Torvalds struct acpi_device *parent; 2691da177e4SLinus Torvalds struct list_head children; 2701da177e4SLinus Torvalds struct list_head node; 2711da177e4SLinus Torvalds struct list_head wakeup_list; 2721da177e4SLinus Torvalds struct acpi_device_status status; 2731da177e4SLinus Torvalds struct acpi_device_flags flags; 2741da177e4SLinus Torvalds struct acpi_device_pnp pnp; 2751da177e4SLinus Torvalds struct acpi_device_power power; 2761da177e4SLinus Torvalds struct acpi_device_wakeup wakeup; 2771da177e4SLinus Torvalds struct acpi_device_perf performance; 2781da177e4SLinus Torvalds struct acpi_device_dir dir; 2791da177e4SLinus Torvalds struct acpi_device_ops ops; 2801da177e4SLinus Torvalds struct acpi_driver *driver; 2811da177e4SLinus Torvalds void *driver_data; 2825b327265SPatrick Mochel struct device dev; 283c4168bffSLi Shaohua struct acpi_bus_ops bus_ops; /* workaround for different code path for hotplug */ 28496333578SLi Shaohua enum acpi_bus_removal_type removal_type; /* indicate for different removal type */ 2851da177e4SLinus Torvalds }; 2861da177e4SLinus Torvalds 287db89b4f0SPavel Machek static inline void *acpi_driver_data(struct acpi_device *d) 288db89b4f0SPavel Machek { 289db89b4f0SPavel Machek return d->driver_data; 290db89b4f0SPavel Machek } 291db89b4f0SPavel Machek 292d43ec68eSPatrick Mochel #define to_acpi_device(d) container_of(d, struct acpi_device, dev) 293d43ec68eSPatrick Mochel #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) 2941da177e4SLinus Torvalds 29555955aadSDavid Brownell /* acpi_device.dev.bus == &acpi_bus_type */ 29655955aadSDavid Brownell extern struct bus_type acpi_bus_type; 29755955aadSDavid Brownell 2981da177e4SLinus Torvalds /* 2991da177e4SLinus Torvalds * Events 3001da177e4SLinus Torvalds * ------ 3011da177e4SLinus Torvalds */ 3021da177e4SLinus Torvalds 3031da177e4SLinus Torvalds struct acpi_bus_event { 3041da177e4SLinus Torvalds struct list_head node; 3051da177e4SLinus Torvalds acpi_device_class device_class; 3061da177e4SLinus Torvalds acpi_bus_id bus_id; 3071da177e4SLinus Torvalds u32 type; 3081da177e4SLinus Torvalds u32 data; 3091da177e4SLinus Torvalds }; 3101da177e4SLinus Torvalds 31199e0d2fcSGreg Kroah-Hartman extern struct kobject *acpi_kobj; 312962ce8caSZhang Rui extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); 3138e4319c4SBob Moore void acpi_bus_private_data_handler(acpi_handle, void *); 31420733939SZhang Rui int acpi_bus_get_private_data(acpi_handle, void **); 3159ee85241SZhang Rui extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); 3169ee85241SZhang Rui extern int register_acpi_notifier(struct notifier_block *); 3179ee85241SZhang Rui extern int unregister_acpi_notifier(struct notifier_block *); 3186bd00a61SShaohua Li 3196bd00a61SShaohua Li extern int register_acpi_bus_notifier(struct notifier_block *nb); 3206bd00a61SShaohua Li extern void unregister_acpi_bus_notifier(struct notifier_block *nb); 3211da177e4SLinus Torvalds /* 3221da177e4SLinus Torvalds * External Functions 3231da177e4SLinus Torvalds */ 3241da177e4SLinus Torvalds 3251da177e4SLinus Torvalds int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device); 3268e4319c4SBob Moore void acpi_bus_data_handler(acpi_handle handle, void *context); 327402ac536SBjorn Helgaas acpi_status acpi_bus_get_status_handle(acpi_handle handle, 328402ac536SBjorn Helgaas unsigned long long *sta); 3291da177e4SLinus Torvalds int acpi_bus_get_status(struct acpi_device *device); 3301da177e4SLinus Torvalds int acpi_bus_get_power(acpi_handle handle, int *state); 3311da177e4SLinus Torvalds int acpi_bus_set_power(acpi_handle handle, int state); 3323737b2b1SRafael J. Wysocki bool acpi_bus_power_manageable(acpi_handle handle); 333eb9d0fe4SRafael J. Wysocki bool acpi_bus_can_wakeup(acpi_handle handle); 33414e04fb3SLen Brown #ifdef CONFIG_ACPI_PROC_EVENT 33514e04fb3SLen Brown int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data); 3368db85d4cSAlexey Starikovskiy int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data); 3371da177e4SLinus Torvalds int acpi_bus_receive_event(struct acpi_bus_event *event); 33814e04fb3SLen Brown #else 33914e04fb3SLen Brown static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data) 34014e04fb3SLen Brown { return 0; } 34114e04fb3SLen Brown #endif 3421da177e4SLinus Torvalds int acpi_bus_register_driver(struct acpi_driver *driver); 34306ea8e08SBjorn Helgaas void acpi_bus_unregister_driver(struct acpi_driver *driver); 3441da177e4SLinus Torvalds int acpi_bus_add(struct acpi_device **child, struct acpi_device *parent, 3451da177e4SLinus Torvalds acpi_handle handle, int type); 346ceaba663SKristen Accardi int acpi_bus_trim(struct acpi_device *start, int rmdevice); 3473fb02738SRajesh Shah int acpi_bus_start(struct acpi_device *device); 348c8f7a62cSLen Brown acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); 3498c8eb78fSThomas Renninger int acpi_match_device_ids(struct acpi_device *device, 3508c8eb78fSThomas Renninger const struct acpi_device_id *ids); 3511da177e4SLinus Torvalds int acpi_create_dir(struct acpi_device *); 3521da177e4SLinus Torvalds void acpi_remove_dir(struct acpi_device *); 3531da177e4SLinus Torvalds 3544e10d12aSDavid Shaohua Li /* 3554e10d12aSDavid Shaohua Li * Bind physical devices with ACPI devices 3564e10d12aSDavid Shaohua Li */ 3574e10d12aSDavid Shaohua Li struct acpi_bus_type { 3584e10d12aSDavid Shaohua Li struct list_head list; 3594e10d12aSDavid Shaohua Li struct bus_type *bus; 3604e10d12aSDavid Shaohua Li /* For general devices under the bus */ 3614e10d12aSDavid Shaohua Li int (*find_device) (struct device *, acpi_handle *); 3624e10d12aSDavid Shaohua Li /* For bridges, such as PCI root bridge, IDE controller */ 3634e10d12aSDavid Shaohua Li int (*find_bridge) (struct device *, acpi_handle *); 3644e10d12aSDavid Shaohua Li }; 3654e10d12aSDavid Shaohua Li int register_acpi_bus_type(struct acpi_bus_type *); 3664e10d12aSDavid Shaohua Li int unregister_acpi_bus_type(struct acpi_bus_type *); 3674e10d12aSDavid Shaohua Li struct device *acpi_get_physical_device(acpi_handle); 36822c13f9dSThomas Renninger 36976d56de5SAlex Chiang struct acpi_pci_root { 37076d56de5SAlex Chiang struct list_head node; 37176d56de5SAlex Chiang struct acpi_device * device; 37276d56de5SAlex Chiang struct acpi_pci_id id; 37376d56de5SAlex Chiang struct pci_bus *bus; 37476d56de5SAlex Chiang u16 segment; 37576d56de5SAlex Chiang u8 bus_nr; 37676d56de5SAlex Chiang 37776d56de5SAlex Chiang u32 osc_support_set; /* _OSC state of support bits */ 37876d56de5SAlex Chiang u32 osc_control_set; /* _OSC state of control bits */ 37976d56de5SAlex Chiang u32 osc_control_qry; /* the latest _OSC query result */ 38076d56de5SAlex Chiang 38176d56de5SAlex Chiang u32 osc_queried:1; /* has _OSC control been queried? */ 38276d56de5SAlex Chiang }; 38376d56de5SAlex Chiang 3844e10d12aSDavid Shaohua Li /* helper */ 3854e10d12aSDavid Shaohua Li acpi_handle acpi_get_child(acpi_handle, acpi_integer); 38627558203SAlexander Chiang int acpi_is_root_bridge(acpi_handle); 3874e10d12aSDavid Shaohua Li acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int); 38876d56de5SAlex Chiang struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); 389465ae641SBenjamin Herrenschmidt #define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle)) 3904e10d12aSDavid Shaohua Li 391296699deSRafael J. Wysocki #ifdef CONFIG_PM_SLEEP 39206166780SDavid Brownell int acpi_pm_device_sleep_state(struct device *, int *); 393eb9d0fe4SRafael J. Wysocki int acpi_pm_device_sleep_wake(struct device *, bool); 394296699deSRafael J. Wysocki #else /* !CONFIG_PM_SLEEP */ 39506166780SDavid Brownell static inline int acpi_pm_device_sleep_state(struct device *d, int *p) 396296699deSRafael J. Wysocki { 397296699deSRafael J. Wysocki if (p) 398296699deSRafael J. Wysocki *p = ACPI_STATE_D0; 399296699deSRafael J. Wysocki return ACPI_STATE_D3; 400296699deSRafael J. Wysocki } 401f7a1b860SDavid Howells static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable) 402f7a1b860SDavid Howells { 403f7a1b860SDavid Howells return -ENODEV; 404f7a1b860SDavid Howells } 405296699deSRafael J. Wysocki #endif /* !CONFIG_PM_SLEEP */ 406fd4aff1aSShaohua Li 40776f58584SLen Brown #endif /* CONFIG_ACPI */ 4081da177e4SLinus Torvalds 4091da177e4SLinus Torvalds #endif /*__ACPI_BUS_H__*/ 410