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 #define PREFIX "ACPI: " 341da177e4SLinus Torvalds 351da177e4SLinus Torvalds /* TBD: Make dynamic */ 361da177e4SLinus Torvalds #define ACPI_MAX_HANDLES 10 371da177e4SLinus Torvalds struct acpi_handle_list { 381da177e4SLinus Torvalds u32 count; 391da177e4SLinus Torvalds acpi_handle handles[ACPI_MAX_HANDLES]; 401da177e4SLinus Torvalds }; 411da177e4SLinus Torvalds 421da177e4SLinus Torvalds /* acpi_utils.h */ 431da177e4SLinus Torvalds acpi_status 444be44fcdSLen Brown acpi_extract_package(union acpi_object *package, 454be44fcdSLen Brown struct acpi_buffer *format, struct acpi_buffer *buffer); 461da177e4SLinus Torvalds acpi_status 474be44fcdSLen Brown acpi_evaluate_integer(acpi_handle handle, 481da177e4SLinus Torvalds acpi_string pathname, 494be44fcdSLen Brown struct acpi_object_list *arguments, unsigned long *data); 501da177e4SLinus Torvalds acpi_status 514be44fcdSLen Brown acpi_evaluate_reference(acpi_handle handle, 521da177e4SLinus Torvalds acpi_string pathname, 531da177e4SLinus Torvalds struct acpi_object_list *arguments, 541da177e4SLinus Torvalds struct acpi_handle_list *list); 551da177e4SLinus Torvalds 5676f58584SLen Brown #ifdef CONFIG_ACPI 571da177e4SLinus Torvalds 581da177e4SLinus Torvalds #include <linux/proc_fs.h> 591da177e4SLinus Torvalds 601da177e4SLinus Torvalds #define ACPI_BUS_FILE_ROOT "acpi" 611da177e4SLinus Torvalds extern struct proc_dir_entry *acpi_root_dir; 62793c2388SBob Moore extern struct fadt_descriptor acpi_fadt; 631da177e4SLinus Torvalds 641da177e4SLinus Torvalds enum acpi_bus_removal_type { 651da177e4SLinus Torvalds ACPI_BUS_REMOVAL_NORMAL = 0, 661da177e4SLinus Torvalds ACPI_BUS_REMOVAL_EJECT, 671da177e4SLinus Torvalds ACPI_BUS_REMOVAL_SUPRISE, 681da177e4SLinus Torvalds ACPI_BUS_REMOVAL_TYPE_COUNT 691da177e4SLinus Torvalds }; 701da177e4SLinus Torvalds 711da177e4SLinus Torvalds enum acpi_bus_device_type { 721da177e4SLinus Torvalds ACPI_BUS_TYPE_DEVICE = 0, 731da177e4SLinus Torvalds ACPI_BUS_TYPE_POWER, 741da177e4SLinus Torvalds ACPI_BUS_TYPE_PROCESSOR, 751da177e4SLinus Torvalds ACPI_BUS_TYPE_THERMAL, 761da177e4SLinus Torvalds ACPI_BUS_TYPE_SYSTEM, 771da177e4SLinus Torvalds ACPI_BUS_TYPE_POWER_BUTTON, 781da177e4SLinus Torvalds ACPI_BUS_TYPE_SLEEP_BUTTON, 791da177e4SLinus Torvalds ACPI_BUS_DEVICE_TYPE_COUNT 801da177e4SLinus Torvalds }; 811da177e4SLinus Torvalds 821da177e4SLinus Torvalds struct acpi_driver; 831da177e4SLinus Torvalds struct acpi_device; 841da177e4SLinus Torvalds 851da177e4SLinus Torvalds /* 861da177e4SLinus Torvalds * ACPI Driver 871da177e4SLinus Torvalds * ----------- 881da177e4SLinus Torvalds */ 891da177e4SLinus Torvalds 901da177e4SLinus Torvalds typedef int (*acpi_op_add) (struct acpi_device * device); 911da177e4SLinus Torvalds typedef int (*acpi_op_remove) (struct acpi_device * device, int type); 921da177e4SLinus Torvalds typedef int (*acpi_op_lock) (struct acpi_device * device, int type); 931da177e4SLinus Torvalds typedef int (*acpi_op_start) (struct acpi_device * device); 941da177e4SLinus Torvalds typedef int (*acpi_op_stop) (struct acpi_device * device, int type); 955d9464a4SPatrick Mochel typedef int (*acpi_op_suspend) (struct acpi_device * device, pm_message_t state); 965d9464a4SPatrick Mochel typedef int (*acpi_op_resume) (struct acpi_device * device); 971da177e4SLinus Torvalds typedef int (*acpi_op_scan) (struct acpi_device * device); 981da177e4SLinus Torvalds typedef int (*acpi_op_bind) (struct acpi_device * device); 991da177e4SLinus Torvalds typedef int (*acpi_op_unbind) (struct acpi_device * device); 1001da177e4SLinus Torvalds typedef int (*acpi_op_match) (struct acpi_device * device, 1011da177e4SLinus Torvalds struct acpi_driver * driver); 1025d9464a4SPatrick Mochel typedef int (*acpi_op_shutdown) (struct acpi_device * device); 1031da177e4SLinus Torvalds 1043fb02738SRajesh Shah struct acpi_bus_ops { 1053fb02738SRajesh Shah u32 acpi_op_add:1; 1063fb02738SRajesh Shah u32 acpi_op_remove:1; 1073fb02738SRajesh Shah u32 acpi_op_lock:1; 1083fb02738SRajesh Shah u32 acpi_op_start:1; 1093fb02738SRajesh Shah u32 acpi_op_stop:1; 1103fb02738SRajesh Shah u32 acpi_op_suspend:1; 1113fb02738SRajesh Shah u32 acpi_op_resume:1; 1123fb02738SRajesh Shah u32 acpi_op_scan:1; 1133fb02738SRajesh Shah u32 acpi_op_bind:1; 1143fb02738SRajesh Shah u32 acpi_op_unbind:1; 1153fb02738SRajesh Shah u32 acpi_op_match:1; 1165d9464a4SPatrick Mochel u32 acpi_op_shutdown:1; 1175d9464a4SPatrick Mochel u32 reserved:20; 1183fb02738SRajesh Shah }; 1193fb02738SRajesh Shah 1201da177e4SLinus Torvalds struct acpi_device_ops { 1211da177e4SLinus Torvalds acpi_op_add add; 1221da177e4SLinus Torvalds acpi_op_remove remove; 1231da177e4SLinus Torvalds acpi_op_lock lock; 1241da177e4SLinus Torvalds acpi_op_start start; 1251da177e4SLinus Torvalds acpi_op_stop stop; 1261da177e4SLinus Torvalds acpi_op_suspend suspend; 1271da177e4SLinus Torvalds acpi_op_resume resume; 1281da177e4SLinus Torvalds acpi_op_scan scan; 1291da177e4SLinus Torvalds acpi_op_bind bind; 1301da177e4SLinus Torvalds acpi_op_unbind unbind; 1311da177e4SLinus Torvalds acpi_op_match match; 1325d9464a4SPatrick Mochel acpi_op_shutdown shutdown; 1331da177e4SLinus Torvalds }; 1341da177e4SLinus Torvalds 1351da177e4SLinus Torvalds struct acpi_driver { 1361da177e4SLinus Torvalds char name[80]; 1371da177e4SLinus Torvalds char class[80]; 1381da177e4SLinus Torvalds char *ids; /* Supported Hardware IDs */ 1391da177e4SLinus Torvalds struct acpi_device_ops ops; 140d43ec68eSPatrick Mochel struct device_driver drv; 1411890a97aSPatrick Mochel struct module *owner; 1421da177e4SLinus Torvalds }; 1431da177e4SLinus Torvalds 1441da177e4SLinus Torvalds /* 1451da177e4SLinus Torvalds * ACPI Device 1461da177e4SLinus Torvalds * ----------- 1471da177e4SLinus Torvalds */ 1481da177e4SLinus Torvalds 1491da177e4SLinus Torvalds /* Status (_STA) */ 1501da177e4SLinus Torvalds 1511da177e4SLinus Torvalds struct acpi_device_status { 1521da177e4SLinus Torvalds u32 present:1; 1531da177e4SLinus Torvalds u32 enabled:1; 1541da177e4SLinus Torvalds u32 show_in_ui:1; 1551da177e4SLinus Torvalds u32 functional:1; 1561da177e4SLinus Torvalds u32 battery_present:1; 1571da177e4SLinus Torvalds u32 reserved:27; 1581da177e4SLinus Torvalds }; 1591da177e4SLinus Torvalds 1601da177e4SLinus Torvalds /* Flags */ 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds struct acpi_device_flags { 1631da177e4SLinus Torvalds u32 dynamic_status:1; 1641da177e4SLinus Torvalds u32 hardware_id:1; 1651da177e4SLinus Torvalds u32 compatible_ids:1; 1661da177e4SLinus Torvalds u32 bus_address:1; 1671da177e4SLinus Torvalds u32 unique_id:1; 1681da177e4SLinus Torvalds u32 removable:1; 1691da177e4SLinus Torvalds u32 ejectable:1; 1701da177e4SLinus Torvalds u32 lockable:1; 1711da177e4SLinus Torvalds u32 suprise_removal_ok:1; 1721da177e4SLinus Torvalds u32 power_manageable:1; 1731da177e4SLinus Torvalds u32 performance_manageable:1; 1741da177e4SLinus Torvalds u32 wake_capable:1; /* Wakeup(_PRW) supported? */ 1750feabb01SKonstantin Karasyov u32 force_power_state:1; 1760feabb01SKonstantin Karasyov u32 reserved:19; 1771da177e4SLinus Torvalds }; 1781da177e4SLinus Torvalds 1791da177e4SLinus Torvalds /* File System */ 1801da177e4SLinus Torvalds 1811da177e4SLinus Torvalds struct acpi_device_dir { 1821da177e4SLinus Torvalds struct proc_dir_entry *entry; 1831da177e4SLinus Torvalds }; 1841da177e4SLinus Torvalds 1851da177e4SLinus Torvalds #define acpi_device_dir(d) ((d)->dir.entry) 1861da177e4SLinus Torvalds 1871da177e4SLinus Torvalds /* Plug and Play */ 1881da177e4SLinus Torvalds 1891da177e4SLinus Torvalds typedef char acpi_bus_id[5]; 1901da177e4SLinus Torvalds typedef unsigned long acpi_bus_address; 1911da177e4SLinus Torvalds typedef char acpi_hardware_id[9]; 1921da177e4SLinus Torvalds typedef char acpi_unique_id[9]; 1931da177e4SLinus Torvalds typedef char acpi_device_name[40]; 1941da177e4SLinus Torvalds typedef char acpi_device_class[20]; 1951da177e4SLinus Torvalds 1961da177e4SLinus Torvalds struct acpi_device_pnp { 1971da177e4SLinus Torvalds acpi_bus_id bus_id; /* Object name */ 1981da177e4SLinus Torvalds acpi_bus_address bus_address; /* _ADR */ 1991da177e4SLinus Torvalds acpi_hardware_id hardware_id; /* _HID */ 2001da177e4SLinus Torvalds struct acpi_compatible_id_list *cid_list; /* _CIDs */ 2011da177e4SLinus Torvalds acpi_unique_id unique_id; /* _UID */ 2021da177e4SLinus Torvalds acpi_device_name device_name; /* Driver-determined */ 2031da177e4SLinus Torvalds acpi_device_class device_class; /* " */ 2041da177e4SLinus Torvalds }; 2051da177e4SLinus Torvalds 2061da177e4SLinus Torvalds #define acpi_device_bid(d) ((d)->pnp.bus_id) 2071da177e4SLinus Torvalds #define acpi_device_adr(d) ((d)->pnp.bus_address) 2081da177e4SLinus Torvalds #define acpi_device_hid(d) ((d)->pnp.hardware_id) 2091da177e4SLinus Torvalds #define acpi_device_uid(d) ((d)->pnp.unique_id) 2101da177e4SLinus Torvalds #define acpi_device_name(d) ((d)->pnp.device_name) 2111da177e4SLinus Torvalds #define acpi_device_class(d) ((d)->pnp.device_class) 2121da177e4SLinus Torvalds 2131da177e4SLinus Torvalds /* Power Management */ 2141da177e4SLinus Torvalds 2151da177e4SLinus Torvalds struct acpi_device_power_flags { 2161da177e4SLinus Torvalds u32 explicit_get:1; /* _PSC present? */ 2171da177e4SLinus Torvalds u32 power_resources:1; /* Power resources */ 2181da177e4SLinus Torvalds u32 inrush_current:1; /* Serialize Dx->D0 */ 2191da177e4SLinus Torvalds u32 power_removed:1; /* Optimize Dx->D0 */ 2201da177e4SLinus Torvalds u32 reserved:28; 2211da177e4SLinus Torvalds }; 2221da177e4SLinus Torvalds 2231da177e4SLinus Torvalds struct acpi_device_power_state { 2241da177e4SLinus Torvalds struct { 2251da177e4SLinus Torvalds u8 valid:1; 2261da177e4SLinus Torvalds u8 explicit_set:1; /* _PSx present? */ 2271da177e4SLinus Torvalds u8 reserved:6; 2281da177e4SLinus Torvalds } flags; 2291da177e4SLinus Torvalds int power; /* % Power (compared to D0) */ 2301da177e4SLinus Torvalds int latency; /* Dx->D0 time (microseconds) */ 2311da177e4SLinus Torvalds struct acpi_handle_list resources; /* Power resources referenced */ 2321da177e4SLinus Torvalds }; 2331da177e4SLinus Torvalds 2341da177e4SLinus Torvalds struct acpi_device_power { 2351da177e4SLinus Torvalds int state; /* Current state */ 2361da177e4SLinus Torvalds struct acpi_device_power_flags flags; 2371da177e4SLinus Torvalds struct acpi_device_power_state states[4]; /* Power states (D0-D3) */ 2381da177e4SLinus Torvalds }; 2391da177e4SLinus Torvalds 2401da177e4SLinus Torvalds /* Performance Management */ 2411da177e4SLinus Torvalds 2421da177e4SLinus Torvalds struct acpi_device_perf_flags { 2431da177e4SLinus Torvalds u8 reserved:8; 2441da177e4SLinus Torvalds }; 2451da177e4SLinus Torvalds 2461da177e4SLinus Torvalds struct acpi_device_perf_state { 2471da177e4SLinus Torvalds struct { 2481da177e4SLinus Torvalds u8 valid:1; 2491da177e4SLinus Torvalds u8 reserved:7; 2501da177e4SLinus Torvalds } flags; 2511da177e4SLinus Torvalds u8 power; /* % Power (compared to P0) */ 2521da177e4SLinus Torvalds u8 performance; /* % Performance ( " ) */ 2531da177e4SLinus Torvalds int latency; /* Px->P0 time (microseconds) */ 2541da177e4SLinus Torvalds }; 2551da177e4SLinus Torvalds 2561da177e4SLinus Torvalds struct acpi_device_perf { 2571da177e4SLinus Torvalds int state; 2581da177e4SLinus Torvalds struct acpi_device_perf_flags flags; 2591da177e4SLinus Torvalds int state_count; 2601da177e4SLinus Torvalds struct acpi_device_perf_state *states; 2611da177e4SLinus Torvalds }; 2621da177e4SLinus Torvalds 2631da177e4SLinus Torvalds /* Wakeup Management */ 2641da177e4SLinus Torvalds struct acpi_device_wakeup_flags { 2651da177e4SLinus Torvalds u8 valid:1; /* Can successfully enable wakeup? */ 2661da177e4SLinus Torvalds u8 run_wake:1; /* Run-Wake GPE devices */ 2671da177e4SLinus Torvalds }; 2681da177e4SLinus Torvalds 2691da177e4SLinus Torvalds struct acpi_device_wakeup_state { 2701da177e4SLinus Torvalds u8 enabled:1; 2711da177e4SLinus Torvalds u8 active:1; 2721da177e4SLinus Torvalds }; 2731da177e4SLinus Torvalds 2741da177e4SLinus Torvalds struct acpi_device_wakeup { 2751da177e4SLinus Torvalds acpi_handle gpe_device; 27653b3531bSAlexey Dobriyan acpi_integer gpe_number; 2771da177e4SLinus Torvalds acpi_integer sleep_state; 2781da177e4SLinus Torvalds struct acpi_handle_list resources; 2791da177e4SLinus Torvalds struct acpi_device_wakeup_state state; 2801da177e4SLinus Torvalds struct acpi_device_wakeup_flags flags; 2811da177e4SLinus Torvalds }; 2821da177e4SLinus Torvalds 2831da177e4SLinus Torvalds /* Device */ 2841da177e4SLinus Torvalds 2851da177e4SLinus Torvalds struct acpi_device { 2861da177e4SLinus Torvalds acpi_handle handle; 2871da177e4SLinus Torvalds struct acpi_device *parent; 2881da177e4SLinus Torvalds struct list_head children; 2891da177e4SLinus Torvalds struct list_head node; 2901da177e4SLinus Torvalds struct list_head wakeup_list; 2911da177e4SLinus Torvalds struct list_head g_list; 2921da177e4SLinus Torvalds struct acpi_device_status status; 2931da177e4SLinus Torvalds struct acpi_device_flags flags; 2941da177e4SLinus Torvalds struct acpi_device_pnp pnp; 2951da177e4SLinus Torvalds struct acpi_device_power power; 2961da177e4SLinus Torvalds struct acpi_device_wakeup wakeup; 2971da177e4SLinus Torvalds struct acpi_device_perf performance; 2981da177e4SLinus Torvalds struct acpi_device_dir dir; 2991da177e4SLinus Torvalds struct acpi_device_ops ops; 3001da177e4SLinus Torvalds struct acpi_driver *driver; 3011da177e4SLinus Torvalds void *driver_data; 3021da177e4SLinus Torvalds struct kobject kobj; 3035b327265SPatrick Mochel struct device dev; 3041da177e4SLinus Torvalds }; 3051da177e4SLinus Torvalds 3061da177e4SLinus Torvalds #define acpi_driver_data(d) ((d)->driver_data) 307d43ec68eSPatrick Mochel #define to_acpi_device(d) container_of(d, struct acpi_device, dev) 308d43ec68eSPatrick Mochel #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) 3091da177e4SLinus Torvalds 3101da177e4SLinus Torvalds /* 3111da177e4SLinus Torvalds * Events 3121da177e4SLinus Torvalds * ------ 3131da177e4SLinus Torvalds */ 3141da177e4SLinus Torvalds 3151da177e4SLinus Torvalds struct acpi_bus_event { 3161da177e4SLinus Torvalds struct list_head node; 3171da177e4SLinus Torvalds acpi_device_class device_class; 3181da177e4SLinus Torvalds acpi_bus_id bus_id; 3191da177e4SLinus Torvalds u32 type; 3201da177e4SLinus Torvalds u32 data; 3211da177e4SLinus Torvalds }; 3221da177e4SLinus Torvalds 3231da177e4SLinus Torvalds extern struct subsystem acpi_subsys; 3241da177e4SLinus Torvalds 3251da177e4SLinus Torvalds /* 3261da177e4SLinus Torvalds * External Functions 3271da177e4SLinus Torvalds */ 3281da177e4SLinus Torvalds 3291da177e4SLinus Torvalds int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device); 3301da177e4SLinus Torvalds void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context); 3311da177e4SLinus Torvalds int acpi_bus_get_status(struct acpi_device *device); 3321da177e4SLinus Torvalds int acpi_bus_get_power(acpi_handle handle, int *state); 3331da177e4SLinus Torvalds int acpi_bus_set_power(acpi_handle handle, int state); 3341da177e4SLinus Torvalds int acpi_bus_generate_event(struct acpi_device *device, u8 type, int data); 3351da177e4SLinus Torvalds int acpi_bus_receive_event(struct acpi_bus_event *event); 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); 3431da177e4SLinus Torvalds int acpi_match_ids(struct acpi_device *device, char *ids); 3441da177e4SLinus Torvalds int acpi_create_dir(struct acpi_device *); 3451da177e4SLinus Torvalds void acpi_remove_dir(struct acpi_device *); 3461da177e4SLinus Torvalds 3474e10d12aSDavid Shaohua Li /* 3484e10d12aSDavid Shaohua Li * Bind physical devices with ACPI devices 3494e10d12aSDavid Shaohua Li */ 3504e10d12aSDavid Shaohua Li #include <linux/device.h> 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); 3624e10d12aSDavid Shaohua Li /* helper */ 3634e10d12aSDavid Shaohua Li acpi_handle acpi_get_child(acpi_handle, acpi_integer); 3644e10d12aSDavid Shaohua Li acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int); 365465ae641SBenjamin Herrenschmidt #define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle)) 3664e10d12aSDavid Shaohua Li 36776f58584SLen Brown #endif /* CONFIG_ACPI */ 3681da177e4SLinus Torvalds 3691da177e4SLinus Torvalds #endif /*__ACPI_BUS_H__*/ 370