2 * acpi_bus.h - ACPI Bus Driver ($Revision: 22 $)
4 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
5 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
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.
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.
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
26 #ifndef __ACPI_BUS_H__
27 #define __ACPI_BUS_H__
29 #include <linux/device.h>
31 #include <acpi/acpi.h>
33 #define PREFIX "ACPI: "
35 /* TBD: Make dynamic */
36 #define ACPI_MAX_HANDLES 10
37 struct acpi_handle_list {
39 acpi_handle handles[ACPI_MAX_HANDLES];
44 acpi_extract_package(union acpi_object *package,
45 struct acpi_buffer *format, struct acpi_buffer *buffer);
47 acpi_evaluate_integer(acpi_handle handle,
49 struct acpi_object_list *arguments, unsigned long long *data);
51 acpi_evaluate_reference(acpi_handle handle,
53 struct acpi_object_list *arguments,
54 struct acpi_handle_list *list);
58 #include <linux/proc_fs.h>
60 #define ACPI_BUS_FILE_ROOT "acpi"
61 extern struct proc_dir_entry *acpi_root_dir;
63 enum acpi_bus_removal_type {
64 ACPI_BUS_REMOVAL_NORMAL = 0,
65 ACPI_BUS_REMOVAL_EJECT,
66 ACPI_BUS_REMOVAL_SUPRISE,
67 ACPI_BUS_REMOVAL_TYPE_COUNT
70 enum acpi_bus_device_type {
71 ACPI_BUS_TYPE_DEVICE = 0,
73 ACPI_BUS_TYPE_PROCESSOR,
74 ACPI_BUS_TYPE_THERMAL,
76 ACPI_BUS_TYPE_POWER_BUTTON,
77 ACPI_BUS_TYPE_SLEEP_BUTTON,
78 ACPI_BUS_DEVICE_TYPE_COUNT
89 typedef int (*acpi_op_add) (struct acpi_device * device);
90 typedef int (*acpi_op_remove) (struct acpi_device * device, int type);
91 typedef int (*acpi_op_start) (struct acpi_device * device);
92 typedef int (*acpi_op_stop) (struct acpi_device * device, int type);
93 typedef int (*acpi_op_suspend) (struct acpi_device * device,
95 typedef int (*acpi_op_resume) (struct acpi_device * device);
96 typedef int (*acpi_op_bind) (struct acpi_device * device);
97 typedef int (*acpi_op_unbind) (struct acpi_device * device);
98 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
100 struct acpi_bus_ops {
105 struct acpi_device_ops {
107 acpi_op_remove remove;
110 acpi_op_suspend suspend;
111 acpi_op_resume resume;
113 acpi_op_unbind unbind;
114 acpi_op_notify notify;
120 const struct acpi_device_id *ids; /* Supported Hardware IDs */
121 struct acpi_device_ops ops;
122 struct device_driver drv;
123 struct module *owner;
133 struct acpi_device_status {
138 u32 battery_present:1;
144 struct acpi_device_flags {
145 u32 dynamic_status:1;
147 u32 compatible_ids:1;
153 u32 suprise_removal_ok:1;
154 u32 power_manageable:1;
155 u32 performance_manageable:1;
156 u32 wake_capable:1; /* Wakeup(_PRW) supported? */
157 u32 force_power_state:1;
163 struct acpi_device_dir {
164 struct proc_dir_entry *entry;
167 #define acpi_device_dir(d) ((d)->dir.entry)
171 typedef char acpi_bus_id[5];
172 typedef unsigned long acpi_bus_address;
173 typedef char acpi_hardware_id[15];
174 typedef char acpi_unique_id[9];
175 typedef char acpi_device_name[40];
176 typedef char acpi_device_class[20];
178 struct acpi_device_pnp {
179 acpi_bus_id bus_id; /* Object name */
180 acpi_bus_address bus_address; /* _ADR */
181 acpi_hardware_id hardware_id; /* _HID */
182 struct acpi_compatible_id_list *cid_list; /* _CIDs */
183 acpi_unique_id unique_id; /* _UID */
184 acpi_device_name device_name; /* Driver-determined */
185 acpi_device_class device_class; /* " */
188 #define acpi_device_bid(d) ((d)->pnp.bus_id)
189 #define acpi_device_adr(d) ((d)->pnp.bus_address)
190 #define acpi_device_hid(d) ((d)->pnp.hardware_id)
191 #define acpi_device_uid(d) ((d)->pnp.unique_id)
192 #define acpi_device_name(d) ((d)->pnp.device_name)
193 #define acpi_device_class(d) ((d)->pnp.device_class)
195 /* Power Management */
197 struct acpi_device_power_flags {
198 u32 explicit_get:1; /* _PSC present? */
199 u32 power_resources:1; /* Power resources */
200 u32 inrush_current:1; /* Serialize Dx->D0 */
201 u32 power_removed:1; /* Optimize Dx->D0 */
205 struct acpi_device_power_state {
208 u8 explicit_set:1; /* _PSx present? */
211 int power; /* % Power (compared to D0) */
212 int latency; /* Dx->D0 time (microseconds) */
213 struct acpi_handle_list resources; /* Power resources referenced */
216 struct acpi_device_power {
217 int state; /* Current state */
218 struct acpi_device_power_flags flags;
219 struct acpi_device_power_state states[4]; /* Power states (D0-D3) */
222 /* Performance Management */
224 struct acpi_device_perf_flags {
228 struct acpi_device_perf_state {
233 u8 power; /* % Power (compared to P0) */
234 u8 performance; /* % Performance ( " ) */
235 int latency; /* Px->P0 time (microseconds) */
238 struct acpi_device_perf {
240 struct acpi_device_perf_flags flags;
242 struct acpi_device_perf_state *states;
245 /* Wakeup Management */
246 struct acpi_device_wakeup_flags {
247 u8 valid:1; /* Can successfully enable wakeup? */
248 u8 prepared:1; /* Has the wake-up capability been enabled? */
249 u8 run_wake:1; /* Run-Wake GPE devices */
252 struct acpi_device_wakeup_state {
256 struct acpi_device_wakeup {
257 acpi_handle gpe_device;
258 acpi_integer gpe_number;
259 acpi_integer sleep_state;
260 struct acpi_handle_list resources;
261 struct acpi_device_wakeup_state state;
262 struct acpi_device_wakeup_flags flags;
269 struct acpi_device *parent;
270 struct list_head children;
271 struct list_head node;
272 struct list_head wakeup_list;
273 struct acpi_device_status status;
274 struct acpi_device_flags flags;
275 struct acpi_device_pnp pnp;
276 struct acpi_device_power power;
277 struct acpi_device_wakeup wakeup;
278 struct acpi_device_perf performance;
279 struct acpi_device_dir dir;
280 struct acpi_device_ops ops;
281 struct acpi_driver *driver;
284 struct acpi_bus_ops bus_ops; /* workaround for different code path for hotplug */
285 enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
288 static inline void *acpi_driver_data(struct acpi_device *d)
290 return d->driver_data;
293 #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)
296 /* acpi_device.dev.bus == &acpi_bus_type */
297 extern struct bus_type acpi_bus_type;
304 struct acpi_bus_event {
305 struct list_head node;
306 acpi_device_class device_class;
312 extern struct kobject *acpi_kobj;
313 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
314 void acpi_bus_private_data_handler(acpi_handle, u32, void *);
315 int acpi_bus_get_private_data(acpi_handle, void **);
316 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
317 extern int register_acpi_notifier(struct notifier_block *);
318 extern int unregister_acpi_notifier(struct notifier_block *);
320 extern int register_acpi_bus_notifier(struct notifier_block *nb);
321 extern void unregister_acpi_bus_notifier(struct notifier_block *nb);
326 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
327 void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context);
328 int acpi_bus_get_status(struct acpi_device *device);
329 int acpi_bus_get_power(acpi_handle handle, int *state);
330 int acpi_bus_set_power(acpi_handle handle, int state);
331 bool acpi_bus_power_manageable(acpi_handle handle);
332 bool acpi_bus_can_wakeup(acpi_handle handle);
333 #ifdef CONFIG_ACPI_PROC_EVENT
334 int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
335 int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);
336 int acpi_bus_receive_event(struct acpi_bus_event *event);
338 static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
341 int acpi_bus_register_driver(struct acpi_driver *driver);
342 void acpi_bus_unregister_driver(struct acpi_driver *driver);
343 int acpi_bus_add(struct acpi_device **child, struct acpi_device *parent,
344 acpi_handle handle, int type);
345 int acpi_bus_trim(struct acpi_device *start, int rmdevice);
346 int acpi_bus_start(struct acpi_device *device);
347 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
348 int acpi_match_device_ids(struct acpi_device *device,
349 const struct acpi_device_id *ids);
350 int acpi_create_dir(struct acpi_device *);
351 void acpi_remove_dir(struct acpi_device *);
354 * Bind physical devices with ACPI devices
356 #include <linux/device.h>
357 struct acpi_bus_type {
358 struct list_head list;
359 struct bus_type *bus;
360 /* For general devices under the bus */
361 int (*find_device) (struct device *, acpi_handle *);
362 /* For bridges, such as PCI root bridge, IDE controller */
363 int (*find_bridge) (struct device *, acpi_handle *);
365 int register_acpi_bus_type(struct acpi_bus_type *);
366 int unregister_acpi_bus_type(struct acpi_bus_type *);
367 struct device *acpi_get_physical_device(acpi_handle);
368 struct device *acpi_get_physical_pci_device(acpi_handle);
371 acpi_handle acpi_get_child(acpi_handle, acpi_integer);
372 acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
373 #define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle))
375 #ifdef CONFIG_PM_SLEEP
376 int acpi_pm_device_sleep_state(struct device *, int *);
377 int acpi_pm_device_sleep_wake(struct device *, bool);
378 #else /* !CONFIG_PM_SLEEP */
379 static inline int acpi_pm_device_sleep_state(struct device *d, int *p)
383 return ACPI_STATE_D3;
385 static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
389 #endif /* !CONFIG_PM_SLEEP */
391 #endif /* CONFIG_ACPI */
393 #endif /*__ACPI_BUS_H__*/