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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
22 *
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
24 */
25
26#ifndef __ACPI_BUS_H__
27#define __ACPI_BUS_H__
28
Patrick Mochel5b327262006-05-10 10:33:00 -040029#include <linux/device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070030
31#include <acpi/acpi.h>
32
Linus Torvalds1da177e2005-04-16 15:20:36 -070033/* TBD: Make dynamic */
34#define ACPI_MAX_HANDLES 10
35struct acpi_handle_list {
Len Brown4be44fc2005-08-05 00:44:28 -040036 u32 count;
37 acpi_handle handles[ACPI_MAX_HANDLES];
Linus Torvalds1da177e2005-04-16 15:20:36 -070038};
39
Linus Torvalds1da177e2005-04-16 15:20:36 -070040/* acpi_utils.h */
41acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -040042acpi_extract_package(union acpi_object *package,
43 struct acpi_buffer *format, struct acpi_buffer *buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -070044acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -040045acpi_evaluate_integer(acpi_handle handle,
46 acpi_string pathname,
Matthew Wilcox27663c52008-10-10 02:22:59 -040047 struct acpi_object_list *arguments, unsigned long long *data);
Linus Torvalds1da177e2005-04-16 15:20:36 -070048acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -040049acpi_evaluate_reference(acpi_handle handle,
50 acpi_string pathname,
51 struct acpi_object_list *arguments,
52 struct acpi_handle_list *list);
Linus Torvalds1da177e2005-04-16 15:20:36 -070053
Len Brown76f58582005-08-24 12:10:49 -040054#ifdef CONFIG_ACPI
Linus Torvalds1da177e2005-04-16 15:20:36 -070055
56#include <linux/proc_fs.h>
57
58#define ACPI_BUS_FILE_ROOT "acpi"
Len Brown4be44fc2005-08-05 00:44:28 -040059extern struct proc_dir_entry *acpi_root_dir;
Linus Torvalds1da177e2005-04-16 15:20:36 -070060
61enum acpi_bus_removal_type {
Len Brown4be44fc2005-08-05 00:44:28 -040062 ACPI_BUS_REMOVAL_NORMAL = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -070063 ACPI_BUS_REMOVAL_EJECT,
64 ACPI_BUS_REMOVAL_SUPRISE,
65 ACPI_BUS_REMOVAL_TYPE_COUNT
66};
67
68enum acpi_bus_device_type {
Len Brown4be44fc2005-08-05 00:44:28 -040069 ACPI_BUS_TYPE_DEVICE = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 ACPI_BUS_TYPE_POWER,
71 ACPI_BUS_TYPE_PROCESSOR,
72 ACPI_BUS_TYPE_THERMAL,
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 ACPI_BUS_TYPE_POWER_BUTTON,
74 ACPI_BUS_TYPE_SLEEP_BUTTON,
75 ACPI_BUS_DEVICE_TYPE_COUNT
76};
77
78struct acpi_driver;
79struct acpi_device;
80
Linus Torvalds1da177e2005-04-16 15:20:36 -070081/*
82 * ACPI Driver
83 * -----------
84 */
85
Len Brown4be44fc2005-08-05 00:44:28 -040086typedef int (*acpi_op_add) (struct acpi_device * device);
87typedef int (*acpi_op_remove) (struct acpi_device * device, int type);
Len Brown4be44fc2005-08-05 00:44:28 -040088typedef int (*acpi_op_start) (struct acpi_device * device);
Len Brownfd350942007-05-09 23:34:35 -040089typedef int (*acpi_op_suspend) (struct acpi_device * device,
90 pm_message_t state);
Patrick Mochel5d9464a2006-12-07 20:56:27 +080091typedef int (*acpi_op_resume) (struct acpi_device * device);
Len Brown4be44fc2005-08-05 00:44:28 -040092typedef int (*acpi_op_bind) (struct acpi_device * device);
93typedef int (*acpi_op_unbind) (struct acpi_device * device);
Bjorn Helgaas46ec8592009-03-30 17:48:13 +000094typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
Linus Torvalds1da177e2005-04-16 15:20:36 -070095
Rajesh Shah3fb02732005-04-28 00:25:52 -070096struct acpi_bus_ops {
Len Brown4be44fc2005-08-05 00:44:28 -040097 u32 acpi_op_add:1;
Len Brown4be44fc2005-08-05 00:44:28 -040098 u32 acpi_op_start:1;
Rajesh Shah3fb02732005-04-28 00:25:52 -070099};
100
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101struct acpi_device_ops {
Len Brown4be44fc2005-08-05 00:44:28 -0400102 acpi_op_add add;
103 acpi_op_remove remove;
Len Brown4be44fc2005-08-05 00:44:28 -0400104 acpi_op_start start;
Len Brown4be44fc2005-08-05 00:44:28 -0400105 acpi_op_suspend suspend;
106 acpi_op_resume resume;
Len Brown4be44fc2005-08-05 00:44:28 -0400107 acpi_op_bind bind;
108 acpi_op_unbind unbind;
Bjorn Helgaas46ec8592009-03-30 17:48:13 +0000109 acpi_op_notify notify;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110};
111
Bjorn Helgaas6d278132009-04-30 09:35:37 -0600112#define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
113
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114struct acpi_driver {
Len Brown4be44fc2005-08-05 00:44:28 -0400115 char name[80];
116 char class[80];
Thomas Renninger8c8eb782007-07-23 14:43:32 +0200117 const struct acpi_device_id *ids; /* Supported Hardware IDs */
Bjorn Helgaas6d278132009-04-30 09:35:37 -0600118 unsigned int flags;
Len Brown4be44fc2005-08-05 00:44:28 -0400119 struct acpi_device_ops ops;
Patrick Mocheld43ec682006-12-07 20:56:23 +0800120 struct device_driver drv;
Patrick Mochel1890a972006-12-07 20:56:31 +0800121 struct module *owner;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122};
123
124/*
125 * ACPI Device
126 * -----------
127 */
128
129/* Status (_STA) */
130
131struct acpi_device_status {
Len Brown4be44fc2005-08-05 00:44:28 -0400132 u32 present:1;
133 u32 enabled:1;
134 u32 show_in_ui:1;
135 u32 functional:1;
136 u32 battery_present:1;
137 u32 reserved:27;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138};
139
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140/* Flags */
141
142struct acpi_device_flags {
Len Brown4be44fc2005-08-05 00:44:28 -0400143 u32 dynamic_status:1;
Len Brown4be44fc2005-08-05 00:44:28 -0400144 u32 bus_address:1;
Len Brown4be44fc2005-08-05 00:44:28 -0400145 u32 removable:1;
146 u32 ejectable:1;
147 u32 lockable:1;
148 u32 suprise_removal_ok:1;
149 u32 power_manageable:1;
150 u32 performance_manageable:1;
151 u32 wake_capable:1; /* Wakeup(_PRW) supported? */
Len Brownec683732008-01-23 22:41:20 -0500152 u32 force_power_state:1;
Bjorn Helgaas6622d8c2009-09-21 13:35:35 -0600153 u32 reserved:22;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154};
155
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156/* File System */
157
158struct acpi_device_dir {
Len Brown4be44fc2005-08-05 00:44:28 -0400159 struct proc_dir_entry *entry;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160};
161
162#define acpi_device_dir(d) ((d)->dir.entry)
163
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164/* Plug and Play */
165
Zhao Yakui24c5c4c2009-05-21 16:25:35 +0800166typedef char acpi_bus_id[8];
Len Brown4be44fc2005-08-05 00:44:28 -0400167typedef unsigned long acpi_bus_address;
Len Brown4be44fc2005-08-05 00:44:28 -0400168typedef char acpi_device_name[40];
169typedef char acpi_device_class[20];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170
Bjorn Helgaas7f47fa62009-09-21 13:35:19 -0600171struct acpi_hardware_id {
172 struct list_head list;
173 char *id;
174};
175
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176struct acpi_device_pnp {
Len Brown4be44fc2005-08-05 00:44:28 -0400177 acpi_bus_id bus_id; /* Object name */
178 acpi_bus_address bus_address; /* _ADR */
Bob Moore15b8dd52009-06-29 13:39:29 +0800179 char *unique_id; /* _UID */
Bjorn Helgaas7f47fa62009-09-21 13:35:19 -0600180 struct list_head ids; /* _HID and _CIDs */
Len Brown4be44fc2005-08-05 00:44:28 -0400181 acpi_device_name device_name; /* Driver-determined */
182 acpi_device_class device_class; /* " */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183};
184
185#define acpi_device_bid(d) ((d)->pnp.bus_id)
186#define acpi_device_adr(d) ((d)->pnp.bus_address)
Thomas Renninger620e1122010-10-01 10:54:00 +0200187const char *acpi_device_hid(struct acpi_device *device);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188#define acpi_device_name(d) ((d)->pnp.device_name)
189#define acpi_device_class(d) ((d)->pnp.device_class)
190
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191/* Power Management */
192
193struct acpi_device_power_flags {
Len Brown4be44fc2005-08-05 00:44:28 -0400194 u32 explicit_get:1; /* _PSC present? */
195 u32 power_resources:1; /* Power resources */
196 u32 inrush_current:1; /* Serialize Dx->D0 */
197 u32 power_removed:1; /* Optimize Dx->D0 */
198 u32 reserved:28;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199};
200
201struct acpi_device_power_state {
202 struct {
Len Brown4be44fc2005-08-05 00:44:28 -0400203 u8 valid:1;
204 u8 explicit_set:1; /* _PSx present? */
205 u8 reserved:6;
206 } flags;
207 int power; /* % Power (compared to D0) */
208 int latency; /* Dx->D0 time (microseconds) */
209 struct acpi_handle_list resources; /* Power resources referenced */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210};
211
212struct acpi_device_power {
Len Brown4be44fc2005-08-05 00:44:28 -0400213 int state; /* Current state */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214 struct acpi_device_power_flags flags;
Len Brown4be44fc2005-08-05 00:44:28 -0400215 struct acpi_device_power_state states[4]; /* Power states (D0-D3) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216};
217
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218/* Performance Management */
219
220struct acpi_device_perf_flags {
Len Brown4be44fc2005-08-05 00:44:28 -0400221 u8 reserved:8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222};
223
224struct acpi_device_perf_state {
225 struct {
Len Brown4be44fc2005-08-05 00:44:28 -0400226 u8 valid:1;
227 u8 reserved:7;
228 } flags;
229 u8 power; /* % Power (compared to P0) */
230 u8 performance; /* % Performance ( " ) */
231 int latency; /* Px->P0 time (microseconds) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232};
233
234struct acpi_device_perf {
Len Brown4be44fc2005-08-05 00:44:28 -0400235 int state;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 struct acpi_device_perf_flags flags;
Len Brown4be44fc2005-08-05 00:44:28 -0400237 int state_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 struct acpi_device_perf_state *states;
239};
240
241/* Wakeup Management */
242struct acpi_device_wakeup_flags {
Len Brown4be44fc2005-08-05 00:44:28 -0400243 u8 valid:1; /* Can successfully enable wakeup? */
244 u8 run_wake:1; /* Run-Wake GPE devices */
Rafael J. Wysockif5177092010-02-17 23:41:49 +0100245 u8 always_enabled:1; /* Run-wake devices that are always enabled */
Rafael J. Wysockib67ea762010-02-17 23:44:09 +0100246 u8 notifier_present:1; /* Wake-up notify handler has been installed */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247};
248
249struct acpi_device_wakeup_state {
Len Brown4be44fc2005-08-05 00:44:28 -0400250 u8 enabled:1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251};
252
253struct acpi_device_wakeup {
Len Brown4be44fc2005-08-05 00:44:28 -0400254 acpi_handle gpe_device;
Lin Ming439913f2010-01-28 10:53:19 +0800255 u64 gpe_number;
256 u64 sleep_state;
Len Brown4be44fc2005-08-05 00:44:28 -0400257 struct acpi_handle_list resources;
258 struct acpi_device_wakeup_state state;
259 struct acpi_device_wakeup_flags flags;
Rafael J. Wysocki9b83ccd2009-09-08 23:15:31 +0200260 int prepare_count;
Rafael J. Wysockif5177092010-02-17 23:41:49 +0100261 int run_wake_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262};
263
264/* Device */
265
266struct acpi_device {
Bjorn Helgaascaaa6ef2009-09-21 19:29:10 +0000267 int device_type;
268 acpi_handle handle; /* no handle for fixed hardware */
Len Brown4be44fc2005-08-05 00:44:28 -0400269 struct acpi_device *parent;
270 struct list_head children;
271 struct list_head node;
272 struct list_head wakeup_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 struct acpi_device_status status;
274 struct acpi_device_flags flags;
Len Brown4be44fc2005-08-05 00:44:28 -0400275 struct acpi_device_pnp pnp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 struct acpi_device_power power;
277 struct acpi_device_wakeup wakeup;
Len Brown4be44fc2005-08-05 00:44:28 -0400278 struct acpi_device_perf performance;
279 struct acpi_device_dir dir;
280 struct acpi_device_ops ops;
281 struct acpi_driver *driver;
282 void *driver_data;
Patrick Mochel5b327262006-05-10 10:33:00 -0400283 struct device dev;
Li Shaohuac4168bf2006-12-07 20:56:41 +0800284 struct acpi_bus_ops bus_ops; /* workaround for different code path for hotplug */
Len Brownfd350942007-05-09 23:34:35 -0400285 enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286};
287
Pavel Machekdb89b4f2008-09-22 14:37:34 -0700288static inline void *acpi_driver_data(struct acpi_device *d)
289{
290 return d->driver_data;
291}
292
Patrick Mocheld43ec682006-12-07 20:56:23 +0800293#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
294#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295
David Brownell55955aa2007-05-08 00:28:35 -0700296/* acpi_device.dev.bus == &acpi_bus_type */
297extern struct bus_type acpi_bus_type;
298
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299/*
300 * Events
301 * ------
302 */
303
304struct acpi_bus_event {
Len Brown4be44fc2005-08-05 00:44:28 -0400305 struct list_head node;
306 acpi_device_class device_class;
307 acpi_bus_id bus_id;
308 u32 type;
309 u32 data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310};
311
Greg Kroah-Hartman99e0d2f2007-11-02 16:19:59 -0700312extern struct kobject *acpi_kobj;
Zhang Rui962ce8c2007-08-23 01:24:31 +0800313extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
Bob Moore8e4319c2009-06-29 13:43:27 +0800314void acpi_bus_private_data_handler(acpi_handle, void *);
Zhang Rui20733932008-01-17 15:51:21 +0800315int acpi_bus_get_private_data(acpi_handle, void **);
Zhang Rui9ee85242008-01-25 14:48:06 +0800316extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
317extern int register_acpi_notifier(struct notifier_block *);
318extern int unregister_acpi_notifier(struct notifier_block *);
Shaohua Li6bd00a62008-08-28 10:04:29 +0800319
320extern int register_acpi_bus_notifier(struct notifier_block *nb);
321extern void unregister_acpi_bus_notifier(struct notifier_block *nb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322/*
323 * External Functions
324 */
325
326int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
Bob Moore8e4319c2009-06-29 13:43:27 +0800327void acpi_bus_data_handler(acpi_handle handle, void *context);
Bjorn Helgaas402ac532009-09-21 19:30:01 +0000328acpi_status acpi_bus_get_status_handle(acpi_handle handle,
329 unsigned long long *sta);
Len Brown4be44fc2005-08-05 00:44:28 -0400330int acpi_bus_get_status(struct acpi_device *device);
331int acpi_bus_get_power(acpi_handle handle, int *state);
332int acpi_bus_set_power(acpi_handle handle, int state);
Rafael J. Wysocki3737b2b2008-07-07 03:30:55 +0200333bool acpi_bus_power_manageable(acpi_handle handle);
Rafael J. Wysockieb9d0fe2008-07-07 03:34:48 +0200334bool acpi_bus_can_wakeup(acpi_handle handle);
Len Brown14e04fb2007-08-23 15:20:26 -0400335#ifdef CONFIG_ACPI_PROC_EVENT
336int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
Alexey Starikovskiy8db85d42007-09-26 19:43:16 +0400337int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);
Len Brown4be44fc2005-08-05 00:44:28 -0400338int acpi_bus_receive_event(struct acpi_bus_event *event);
Len Brown14e04fb2007-08-23 15:20:26 -0400339#else
340static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
341 { return 0; }
342#endif
Len Brown4be44fc2005-08-05 00:44:28 -0400343int acpi_bus_register_driver(struct acpi_driver *driver);
Bjorn Helgaas06ea8e02006-04-27 05:25:00 -0400344void acpi_bus_unregister_driver(struct acpi_driver *driver);
Len Brown4be44fc2005-08-05 00:44:28 -0400345int acpi_bus_add(struct acpi_device **child, struct acpi_device *parent,
346 acpi_handle handle, int type);
Kristen Accardiceaba662006-02-23 17:56:01 -0800347int acpi_bus_trim(struct acpi_device *start, int rmdevice);
Len Brown4be44fc2005-08-05 00:44:28 -0400348int acpi_bus_start(struct acpi_device *device);
Len Brownfd350942007-05-09 23:34:35 -0400349acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
Thomas Renninger8c8eb782007-07-23 14:43:32 +0200350int acpi_match_device_ids(struct acpi_device *device,
351 const struct acpi_device_id *ids);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352int acpi_create_dir(struct acpi_device *);
353void acpi_remove_dir(struct acpi_device *);
354
David Shaohua Li4e10d122005-03-18 18:45:35 -0500355/*
356 * Bind physical devices with ACPI devices
357 */
David Shaohua Li4e10d122005-03-18 18:45:35 -0500358struct acpi_bus_type {
Len Brown4be44fc2005-08-05 00:44:28 -0400359 struct list_head list;
360 struct bus_type *bus;
361 /* For general devices under the bus */
362 int (*find_device) (struct device *, acpi_handle *);
David Shaohua Li4e10d122005-03-18 18:45:35 -0500363 /* For bridges, such as PCI root bridge, IDE controller */
Len Brown4be44fc2005-08-05 00:44:28 -0400364 int (*find_bridge) (struct device *, acpi_handle *);
David Shaohua Li4e10d122005-03-18 18:45:35 -0500365};
366int register_acpi_bus_type(struct acpi_bus_type *);
367int unregister_acpi_bus_type(struct acpi_bus_type *);
368struct device *acpi_get_physical_device(acpi_handle);
Thomas Renninger22c13f92008-08-01 17:37:54 +0200369
Alex Chiang76d56de2009-07-23 17:03:00 -0600370struct acpi_pci_root {
371 struct list_head node;
372 struct acpi_device * device;
373 struct acpi_pci_id id;
374 struct pci_bus *bus;
375 u16 segment;
Bjorn Helgaas6ad95512010-03-11 12:20:06 -0700376 struct resource secondary; /* downstream bus range */
Alex Chiang76d56de2009-07-23 17:03:00 -0600377
378 u32 osc_support_set; /* _OSC state of support bits */
379 u32 osc_control_set; /* _OSC state of control bits */
Alex Chiang76d56de2009-07-23 17:03:00 -0600380};
381
David Shaohua Li4e10d122005-03-18 18:45:35 -0500382/* helper */
Lin Ming439913f2010-01-28 10:53:19 +0800383acpi_handle acpi_get_child(acpi_handle, u64);
Alexander Chiang27558202009-06-10 19:55:14 +0000384int acpi_is_root_bridge(acpi_handle);
David Shaohua Li4e10d122005-03-18 18:45:35 -0500385acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
Alex Chiang76d56de2009-07-23 17:03:00 -0600386struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
Benjamin Herrenschmidt465ae642006-11-11 17:18:42 +1100387#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle))
David Shaohua Li4e10d122005-03-18 18:45:35 -0500388
Rafael J. Wysockib67ea762010-02-17 23:44:09 +0100389int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
390int acpi_disable_wakeup_device_power(struct acpi_device *dev);
391
Rafael J. Wysocki761afb82010-10-14 23:24:13 +0200392#ifdef CONFIG_PM_OPS
David Brownell06166782008-06-05 01:15:40 +0200393int acpi_pm_device_sleep_state(struct device *, int *);
Rafael J. Wysocki761afb82010-10-14 23:24:13 +0200394#else
David Brownell06166782008-06-05 01:15:40 +0200395static inline int acpi_pm_device_sleep_state(struct device *d, int *p)
Rafael J. Wysocki296699d2007-07-29 23:27:18 +0200396{
397 if (p)
398 *p = ACPI_STATE_D0;
399 return ACPI_STATE_D3;
400}
Rafael J. Wysocki761afb82010-10-14 23:24:13 +0200401#endif
402
403#ifdef CONFIG_PM_SLEEP
404int acpi_pm_device_sleep_wake(struct device *, bool);
405#else
David Howellsf7a1b862008-07-08 15:00:54 +0100406static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
407{
408 return -ENODEV;
409}
Rafael J. Wysocki761afb82010-10-14 23:24:13 +0200410#endif
Shaohua Lifd4aff12007-07-17 22:40:25 +0200411
Len Brownfd350942007-05-09 23:34:35 -0400412#endif /* CONFIG_ACPI */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413
414#endif /*__ACPI_BUS_H__*/