[mirror_ubuntu-artful-kernel.git] / include / acpi / acpi_bus.h

/*
 *  acpi_bus.h - ACPI Bus Driver ($Revision: 22 $)
 *
 *  Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
 *  Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or (at
 *  your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful, but
 *  WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */

#ifndef __ACPI_BUS_H__
#define __ACPI_BUS_H__

#include <linux/device.h>

#include <acpi/acpi.h>

#define PREFIX			"ACPI: "

/* TBD: Make dynamic */
#define ACPI_MAX_HANDLES	10
struct acpi_handle_list {
	u32 count;
	acpi_handle handles[ACPI_MAX_HANDLES];
};

/* acpi_utils.h */
acpi_status
acpi_extract_package(union acpi_object *package,
		     struct acpi_buffer *format, struct acpi_buffer *buffer);
acpi_status
acpi_evaluate_integer(acpi_handle handle,
		      acpi_string pathname,
		      struct acpi_object_list *arguments, unsigned long long *data);
acpi_status
acpi_evaluate_reference(acpi_handle handle,
			acpi_string pathname,
			struct acpi_object_list *arguments,
			struct acpi_handle_list *list);

#ifdef CONFIG_ACPI

#include <linux/proc_fs.h>

#define ACPI_BUS_FILE_ROOT	"acpi"
extern struct proc_dir_entry *acpi_root_dir;

enum acpi_bus_removal_type {
	ACPI_BUS_REMOVAL_NORMAL = 0,
	ACPI_BUS_REMOVAL_EJECT,
	ACPI_BUS_REMOVAL_SUPRISE,
	ACPI_BUS_REMOVAL_TYPE_COUNT
};

enum acpi_bus_device_type {
	ACPI_BUS_TYPE_DEVICE = 0,
	ACPI_BUS_TYPE_POWER,
	ACPI_BUS_TYPE_PROCESSOR,
	ACPI_BUS_TYPE_THERMAL,
	ACPI_BUS_TYPE_SYSTEM,
	ACPI_BUS_TYPE_POWER_BUTTON,
	ACPI_BUS_TYPE_SLEEP_BUTTON,
	ACPI_BUS_DEVICE_TYPE_COUNT
};

struct acpi_driver;
struct acpi_device;

/*
 * ACPI Driver
 * -----------
 */

typedef int (*acpi_op_add) (struct acpi_device * device);
typedef int (*acpi_op_remove) (struct acpi_device * device, int type);
typedef int (*acpi_op_lock) (struct acpi_device * device, int type);
typedef int (*acpi_op_start) (struct acpi_device * device);
typedef int (*acpi_op_stop) (struct acpi_device * device, int type);
typedef int (*acpi_op_suspend) (struct acpi_device * device,
				pm_message_t state);
typedef int (*acpi_op_resume) (struct acpi_device * device);
typedef int (*acpi_op_scan) (struct acpi_device * device);
typedef int (*acpi_op_bind) (struct acpi_device * device);
typedef int (*acpi_op_unbind) (struct acpi_device * device);
typedef int (*acpi_op_shutdown) (struct acpi_device * device);

struct acpi_bus_ops {
	u32 acpi_op_add:1;
	u32 acpi_op_remove:1;
	u32 acpi_op_lock:1;
	u32 acpi_op_start:1;
	u32 acpi_op_stop:1;
	u32 acpi_op_suspend:1;
	u32 acpi_op_resume:1;
	u32 acpi_op_scan:1;
	u32 acpi_op_bind:1;
	u32 acpi_op_unbind:1;
	u32 acpi_op_shutdown:1;
	u32 reserved:21;
};

struct acpi_device_ops {
	acpi_op_add add;
	acpi_op_remove remove;
	acpi_op_lock lock;
	acpi_op_start start;
	acpi_op_stop stop;
	acpi_op_suspend suspend;
	acpi_op_resume resume;
	acpi_op_scan scan;
	acpi_op_bind bind;
	acpi_op_unbind unbind;
	acpi_op_shutdown shutdown;
};

struct acpi_driver {
	char name[80];
	char class[80];
	const struct acpi_device_id *ids; /* Supported Hardware IDs */
	struct acpi_device_ops ops;
	struct device_driver drv;
	struct module *owner;
};

/*
 * ACPI Device
 * -----------
 */

/* Status (_STA) */

struct acpi_device_status {
	u32 present:1;
	u32 enabled:1;
	u32 show_in_ui:1;
	u32 functional:1;
	u32 battery_present:1;
	u32 reserved:27;
};

/* Flags */

struct acpi_device_flags {
	u32 dynamic_status:1;
	u32 hardware_id:1;
	u32 compatible_ids:1;
	u32 bus_address:1;
	u32 unique_id:1;
	u32 removable:1;
	u32 ejectable:1;
	u32 lockable:1;
	u32 suprise_removal_ok:1;
	u32 power_manageable:1;
	u32 performance_manageable:1;
	u32 wake_capable:1;	/* Wakeup(_PRW) supported? */
	u32 force_power_state:1;
	u32 reserved:19;
};

/* File System */

struct acpi_device_dir {
	struct proc_dir_entry *entry;
};

#define acpi_device_dir(d)	((d)->dir.entry)

/* Plug and Play */

typedef char acpi_bus_id[5];
typedef unsigned long acpi_bus_address;
typedef char acpi_hardware_id[15];
typedef char acpi_unique_id[9];
typedef char acpi_device_name[40];
typedef char acpi_device_class[20];

struct acpi_device_pnp {
	acpi_bus_id bus_id;	/* Object name */
	acpi_bus_address bus_address;	/* _ADR */
	acpi_hardware_id hardware_id;	/* _HID */
	struct acpi_compatible_id_list *cid_list;	/* _CIDs */
	acpi_unique_id unique_id;	/* _UID */
	acpi_device_name device_name;	/* Driver-determined */
	acpi_device_class device_class;	/*        "          */
};

#define acpi_device_bid(d)	((d)->pnp.bus_id)
#define acpi_device_adr(d)	((d)->pnp.bus_address)
#define acpi_device_hid(d)	((d)->pnp.hardware_id)
#define acpi_device_uid(d)	((d)->pnp.unique_id)
#define acpi_device_name(d)	((d)->pnp.device_name)
#define acpi_device_class(d)	((d)->pnp.device_class)

/* Power Management */

struct acpi_device_power_flags {
	u32 explicit_get:1;	/* _PSC present? */
	u32 power_resources:1;	/* Power resources */
	u32 inrush_current:1;	/* Serialize Dx->D0 */
	u32 power_removed:1;	/* Optimize Dx->D0 */
	u32 reserved:28;
};

struct acpi_device_power_state {
	struct {
		u8 valid:1;
		u8 explicit_set:1;	/* _PSx present? */
		u8 reserved:6;
	} flags;
	int power;		/* % Power (compared to D0) */
	int latency;		/* Dx->D0 time (microseconds) */
	struct acpi_handle_list resources;	/* Power resources referenced */
};

struct acpi_device_power {
	int state;		/* Current state */
	struct acpi_device_power_flags flags;
	struct acpi_device_power_state states[4];	/* Power states (D0-D3) */
};

/* Performance Management */

struct acpi_device_perf_flags {
	u8 reserved:8;
};

struct acpi_device_perf_state {
	struct {
		u8 valid:1;
		u8 reserved:7;
	} flags;
	u8 power;		/* % Power (compared to P0) */
	u8 performance;		/* % Performance (    "   ) */
	int latency;		/* Px->P0 time (microseconds) */
};

struct acpi_device_perf {
	int state;
	struct acpi_device_perf_flags flags;
	int state_count;
	struct acpi_device_perf_state *states;
};

/* Wakeup Management */
struct acpi_device_wakeup_flags {
	u8 valid:1;		/* Can successfully enable wakeup? */
	u8 prepared:1;		/* Has the wake-up capability been enabled? */
	u8 run_wake:1;		/* Run-Wake GPE devices */
};

struct acpi_device_wakeup_state {
	u8 enabled:1;
};

struct acpi_device_wakeup {
	acpi_handle gpe_device;
	acpi_integer gpe_number;
	acpi_integer sleep_state;
	struct acpi_handle_list resources;
	struct acpi_device_wakeup_state state;
	struct acpi_device_wakeup_flags flags;
};

/* Device */

struct acpi_device {
	acpi_handle handle;
	struct acpi_device *parent;
	struct list_head children;
	struct list_head node;
	struct list_head wakeup_list;
	struct list_head g_list;
	struct acpi_device_status status;
	struct acpi_device_flags flags;
	struct acpi_device_pnp pnp;
	struct acpi_device_power power;
	struct acpi_device_wakeup wakeup;
	struct acpi_device_perf performance;
	struct acpi_device_dir dir;
	struct acpi_device_ops ops;
	struct acpi_driver *driver;
	void *driver_data;
	struct device dev;
	struct acpi_bus_ops bus_ops;	/* workaround for different code path for hotplug */
	enum acpi_bus_removal_type removal_type;	/* indicate for different removal type */
};

static inline void *acpi_driver_data(struct acpi_device *d)
{
	return d->driver_data;
}

#define to_acpi_device(d)	container_of(d, struct acpi_device, dev)
#define to_acpi_driver(d)	container_of(d, struct acpi_driver, drv)

/* acpi_device.dev.bus == &acpi_bus_type */
extern struct bus_type acpi_bus_type;

/*
 * Events
 * ------
 */

struct acpi_bus_event {
	struct list_head node;
	acpi_device_class device_class;
	acpi_bus_id bus_id;
	u32 type;
	u32 data;
};

extern struct kobject *acpi_kobj;
extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
void acpi_bus_private_data_handler(acpi_handle, u32, void *);
int acpi_bus_get_private_data(acpi_handle, void **);
extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
extern int register_acpi_notifier(struct notifier_block *);
extern int unregister_acpi_notifier(struct notifier_block *);

extern int register_acpi_bus_notifier(struct notifier_block *nb);
extern void unregister_acpi_bus_notifier(struct notifier_block *nb);
/*
 * External Functions
 */

int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context);
int acpi_bus_get_status(struct acpi_device *device);
int acpi_bus_get_power(acpi_handle handle, int *state);
int acpi_bus_set_power(acpi_handle handle, int state);
bool acpi_bus_power_manageable(acpi_handle handle);
bool acpi_bus_can_wakeup(acpi_handle handle);
#ifdef CONFIG_ACPI_PROC_EVENT
int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);
int acpi_bus_receive_event(struct acpi_bus_event *event);
#else
static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
	{ return 0; }
#endif
int acpi_bus_register_driver(struct acpi_driver *driver);
void acpi_bus_unregister_driver(struct acpi_driver *driver);
int acpi_bus_add(struct acpi_device **child, struct acpi_device *parent,
		 acpi_handle handle, int type);
int acpi_bus_trim(struct acpi_device *start, int rmdevice);
int acpi_bus_start(struct acpi_device *device);
acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
int acpi_match_device_ids(struct acpi_device *device,
			  const struct acpi_device_id *ids);
int acpi_create_dir(struct acpi_device *);
void acpi_remove_dir(struct acpi_device *);

/*
 * Bind physical devices with ACPI devices
 */
#include <linux/device.h>
struct acpi_bus_type {
	struct list_head list;
	struct bus_type *bus;
	/* For general devices under the bus */
	int (*find_device) (struct device *, acpi_handle *);
	/* For bridges, such as PCI root bridge, IDE controller */
	int (*find_bridge) (struct device *, acpi_handle *);
};
int register_acpi_bus_type(struct acpi_bus_type *);
int unregister_acpi_bus_type(struct acpi_bus_type *);
struct device *acpi_get_physical_device(acpi_handle);
/* helper */
acpi_handle acpi_get_child(acpi_handle, acpi_integer);
acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle))

#ifdef CONFIG_PM_SLEEP
int acpi_pm_device_sleep_state(struct device *, int *);
int acpi_pm_device_sleep_wake(struct device *, bool);
#else /* !CONFIG_PM_SLEEP */
static inline int acpi_pm_device_sleep_state(struct device *d, int *p)
{
	if (p)
		*p = ACPI_STATE_D0;
	return ACPI_STATE_D3;
}
static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
{
	return -ENODEV;
}
#endif /* !CONFIG_PM_SLEEP */

#endif				/* CONFIG_ACPI */

#endif /*__ACPI_BUS_H__*/
Commit	Line	Data
1da177e4 LT	1	/*
	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
5b327265	29	#include <linux/device.h>
1da177e4 LT	30
	31	#include <acpi/acpi.h>
	32
	33	#define PREFIX "ACPI: "
	34
	35	/* TBD: Make dynamic */
	36	#define ACPI_MAX_HANDLES 10
	37	struct acpi_handle_list {
4be44fcd LB	38	u32 count;
4be44fcd LB	39	acpi_handle handles[ACPI_MAX_HANDLES];
1da177e4 LT	40	};
1da177e4 LT	41
1da177e4 LT	42	/* acpi_utils.h */
1da177e4 LT	43	acpi_status
4be44fcd LB	44	acpi_extract_package(union acpi_object *package,
4be44fcd LB	45	struct acpi_buffer format, struct acpi_buffer buffer);
1da177e4	46	acpi_status
4be44fcd LB	47	acpi_evaluate_integer(acpi_handle handle,
4be44fcd LB	48	acpi_string pathname,
27663c58	49	struct acpi_object_list arguments, unsigned long long data);
1da177e4	50	acpi_status
4be44fcd LB	51	acpi_evaluate_reference(acpi_handle handle,
	52	acpi_string pathname,
	53	struct acpi_object_list *arguments,
	54	struct acpi_handle_list *list);
1da177e4	55
76f58584	56	#ifdef CONFIG_ACPI
1da177e4 LT	57
	58	#include <linux/proc_fs.h>
	59
	60	#define ACPI_BUS_FILE_ROOT "acpi"
4be44fcd	61	extern struct proc_dir_entry *acpi_root_dir;
1da177e4 LT	62
1da177e4 LT	63	enum acpi_bus_removal_type {
4be44fcd	64	ACPI_BUS_REMOVAL_NORMAL = 0,
1da177e4 LT	65	ACPI_BUS_REMOVAL_EJECT,
	66	ACPI_BUS_REMOVAL_SUPRISE,
	67	ACPI_BUS_REMOVAL_TYPE_COUNT
	68	};
	69
	70	enum acpi_bus_device_type {
4be44fcd	71	ACPI_BUS_TYPE_DEVICE = 0,
1da177e4 LT	72	ACPI_BUS_TYPE_POWER,
	73	ACPI_BUS_TYPE_PROCESSOR,
	74	ACPI_BUS_TYPE_THERMAL,
	75	ACPI_BUS_TYPE_SYSTEM,
	76	ACPI_BUS_TYPE_POWER_BUTTON,
	77	ACPI_BUS_TYPE_SLEEP_BUTTON,
	78	ACPI_BUS_DEVICE_TYPE_COUNT
	79	};
	80
	81	struct acpi_driver;
	82	struct acpi_device;
	83
1da177e4 LT	84	/*
	85	* ACPI Driver
	86	* -----------
	87	*/
	88
4be44fcd LB	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_lock) (struct acpi_device device, int type);
	92	typedef int (acpi_op_start) (struct acpi_device device);
	93	typedef int (acpi_op_stop) (struct acpi_device device, int type);
fd350943 LB	94	typedef int (acpi_op_suspend) (struct acpi_device device,
fd350943 LB	95	pm_message_t state);
5d9464a4	96	typedef int (acpi_op_resume) (struct acpi_device device);
4be44fcd LB	97	typedef int (acpi_op_scan) (struct acpi_device device);
	98	typedef int (acpi_op_bind) (struct acpi_device device);
	99	typedef int (acpi_op_unbind) (struct acpi_device device);
5d9464a4	100	typedef int (acpi_op_shutdown) (struct acpi_device device);
1da177e4	101
3fb02738	102	struct acpi_bus_ops {
4be44fcd LB	103	u32 acpi_op_add:1;
	104	u32 acpi_op_remove:1;
	105	u32 acpi_op_lock:1;
	106	u32 acpi_op_start:1;
	107	u32 acpi_op_stop:1;
	108	u32 acpi_op_suspend:1;
	109	u32 acpi_op_resume:1;
	110	u32 acpi_op_scan:1;
	111	u32 acpi_op_bind:1;
	112	u32 acpi_op_unbind:1;
5d9464a4	113	u32 acpi_op_shutdown:1;
4be44fcd	114	u32 reserved:21;
3fb02738 RS	115	};
3fb02738 RS	116
1da177e4	117	struct acpi_device_ops {
4be44fcd LB	118	acpi_op_add add;
	119	acpi_op_remove remove;
	120	acpi_op_lock lock;
	121	acpi_op_start start;
	122	acpi_op_stop stop;
	123	acpi_op_suspend suspend;
	124	acpi_op_resume resume;
	125	acpi_op_scan scan;
	126	acpi_op_bind bind;
	127	acpi_op_unbind unbind;
5d9464a4	128	acpi_op_shutdown shutdown;
1da177e4 LT	129	};
	130
	131	struct acpi_driver {
4be44fcd LB	132	char name[80];
4be44fcd LB	133	char class[80];
8c8eb78f	134	const struct acpi_device_id ids; / Supported Hardware IDs */
4be44fcd	135	struct acpi_device_ops ops;
d43ec68e	136	struct device_driver drv;
1890a97a	137	struct module *owner;
1da177e4 LT	138	};
	139
	140	/*
	141	* ACPI Device
	142	* -----------
	143	*/
	144
	145	/* Status (_STA) */
	146
	147	struct acpi_device_status {
4be44fcd LB	148	u32 present:1;
	149	u32 enabled:1;
	150	u32 show_in_ui:1;
	151	u32 functional:1;
	152	u32 battery_present:1;
	153	u32 reserved:27;
1da177e4 LT	154	};
1da177e4 LT	155
1da177e4 LT	156	/* Flags */
	157
	158	struct acpi_device_flags {
4be44fcd LB	159	u32 dynamic_status:1;
	160	u32 hardware_id:1;
	161	u32 compatible_ids:1;
	162	u32 bus_address:1;
	163	u32 unique_id:1;
	164	u32 removable:1;
	165	u32 ejectable:1;
	166	u32 lockable:1;
	167	u32 suprise_removal_ok:1;
	168	u32 power_manageable:1;
	169	u32 performance_manageable:1;
	170	u32 wake_capable:1; /* Wakeup(_PRW) supported? */
ec68373c LB	171	u32 force_power_state:1;
ec68373c LB	172	u32 reserved:19;
1da177e4 LT	173	};
1da177e4 LT	174
1da177e4 LT	175	/* File System */
	176
	177	struct acpi_device_dir {
4be44fcd	178	struct proc_dir_entry *entry;
1da177e4 LT	179	};
	180
	181	#define acpi_device_dir(d) ((d)->dir.entry)
	182
1da177e4 LT	183	/* Plug and Play */
1da177e4 LT	184
4be44fcd LB	185	typedef char acpi_bus_id[5];
4be44fcd LB	186	typedef unsigned long acpi_bus_address;
bb095854	187	typedef char acpi_hardware_id[15];
4be44fcd LB	188	typedef char acpi_unique_id[9];
	189	typedef char acpi_device_name[40];
	190	typedef char acpi_device_class[20];
1da177e4 LT	191
1da177e4 LT	192	struct acpi_device_pnp {
4be44fcd LB	193	acpi_bus_id bus_id; /* Object name */
	194	acpi_bus_address bus_address; /* _ADR */
	195	acpi_hardware_id hardware_id; /* _HID */
	196	struct acpi_compatible_id_list cid_list; / _CIDs */
	197	acpi_unique_id unique_id; /* _UID */
	198	acpi_device_name device_name; /* Driver-determined */
	199	acpi_device_class device_class; /* " */
1da177e4 LT	200	};
	201
	202	#define acpi_device_bid(d) ((d)->pnp.bus_id)
	203	#define acpi_device_adr(d) ((d)->pnp.bus_address)
	204	#define acpi_device_hid(d) ((d)->pnp.hardware_id)
	205	#define acpi_device_uid(d) ((d)->pnp.unique_id)
	206	#define acpi_device_name(d) ((d)->pnp.device_name)
	207	#define acpi_device_class(d) ((d)->pnp.device_class)
	208
1da177e4 LT	209	/* Power Management */
	210
	211	struct acpi_device_power_flags {
4be44fcd LB	212	u32 explicit_get:1; /* _PSC present? */
	213	u32 power_resources:1; /* Power resources */
	214	u32 inrush_current:1; /* Serialize Dx->D0 */
	215	u32 power_removed:1; /* Optimize Dx->D0 */
	216	u32 reserved:28;
1da177e4 LT	217	};
	218
	219	struct acpi_device_power_state {
	220	struct {
4be44fcd LB	221	u8 valid:1;
	222	u8 explicit_set:1; /* _PSx present? */
	223	u8 reserved:6;
	224	} flags;
	225	int power; /* % Power (compared to D0) */
	226	int latency; /* Dx->D0 time (microseconds) */
	227	struct acpi_handle_list resources; /* Power resources referenced */
1da177e4 LT	228	};
	229
	230	struct acpi_device_power {
4be44fcd	231	int state; /* Current state */
1da177e4	232	struct acpi_device_power_flags flags;
4be44fcd	233	struct acpi_device_power_state states[4]; /* Power states (D0-D3) */
1da177e4 LT	234	};
1da177e4 LT	235
1da177e4 LT	236	/* Performance Management */
	237
	238	struct acpi_device_perf_flags {
4be44fcd	239	u8 reserved:8;
1da177e4 LT	240	};
	241
	242	struct acpi_device_perf_state {
	243	struct {
4be44fcd LB	244	u8 valid:1;
	245	u8 reserved:7;
	246	} flags;
	247	u8 power; /* % Power (compared to P0) */
	248	u8 performance; /* % Performance ( " ) */
	249	int latency; /* Px->P0 time (microseconds) */
1da177e4 LT	250	};
	251
	252	struct acpi_device_perf {
4be44fcd	253	int state;
1da177e4	254	struct acpi_device_perf_flags flags;
4be44fcd	255	int state_count;
1da177e4 LT	256	struct acpi_device_perf_state *states;
	257	};
	258
	259	/* Wakeup Management */
	260	struct acpi_device_wakeup_flags {
4be44fcd	261	u8 valid:1; /* Can successfully enable wakeup? */
0af4b8c4	262	u8 prepared:1; /* Has the wake-up capability been enabled? */
4be44fcd	263	u8 run_wake:1; /* Run-Wake GPE devices */
1da177e4 LT	264	};
	265
	266	struct acpi_device_wakeup_state {
4be44fcd	267	u8 enabled:1;
1da177e4 LT	268	};
	269
	270	struct acpi_device_wakeup {
4be44fcd	271	acpi_handle gpe_device;
53b3531b	272	acpi_integer gpe_number;
4be44fcd LB	273	acpi_integer sleep_state;
	274	struct acpi_handle_list resources;
	275	struct acpi_device_wakeup_state state;
	276	struct acpi_device_wakeup_flags flags;
1da177e4 LT	277	};
	278
	279	/* Device */
	280
	281	struct acpi_device {
4be44fcd LB	282	acpi_handle handle;
	283	struct acpi_device *parent;
	284	struct list_head children;
	285	struct list_head node;
	286	struct list_head wakeup_list;
	287	struct list_head g_list;
1da177e4 LT	288	struct acpi_device_status status;
1da177e4 LT	289	struct acpi_device_flags flags;
4be44fcd	290	struct acpi_device_pnp pnp;
1da177e4 LT	291	struct acpi_device_power power;
1da177e4 LT	292	struct acpi_device_wakeup wakeup;
4be44fcd LB	293	struct acpi_device_perf performance;
	294	struct acpi_device_dir dir;
	295	struct acpi_device_ops ops;
	296	struct acpi_driver *driver;
	297	void *driver_data;
5b327265	298	struct device dev;
c4168bff	299	struct acpi_bus_ops bus_ops; /* workaround for different code path for hotplug */
fd350943	300	enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
1da177e4 LT	301	};
1da177e4 LT	302
db89b4f0 PM	303	static inline void acpi_driver_data(struct acpi_device d)
	304	{
	305	return d->driver_data;
	306	}
	307
d43ec68e PM	308	#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
d43ec68e PM	309	#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
1da177e4	310
55955aad DB	311	/* acpi_device.dev.bus == &acpi_bus_type */
	312	extern struct bus_type acpi_bus_type;
	313
1da177e4 LT	314	/*
	315	* Events
	316	* ------
	317	*/
	318
	319	struct acpi_bus_event {
4be44fcd LB	320	struct list_head node;
	321	acpi_device_class device_class;
	322	acpi_bus_id bus_id;
	323	u32 type;
	324	u32 data;
1da177e4 LT	325	};
1da177e4 LT	326
99e0d2fc	327	extern struct kobject *acpi_kobj;
962ce8ca	328	extern int acpi_bus_generate_netlink_event(const char, const char, u8, int);
20733939 ZR	329	void acpi_bus_private_data_handler(acpi_handle, u32, void *);
20733939 ZR	330	int acpi_bus_get_private_data(acpi_handle, void **);
9ee85241 ZR	331	extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
	332	extern int register_acpi_notifier(struct notifier_block *);
	333	extern int unregister_acpi_notifier(struct notifier_block *);
6bd00a61 SL	334
	335	extern int register_acpi_bus_notifier(struct notifier_block *nb);
	336	extern void unregister_acpi_bus_notifier(struct notifier_block *nb);
1da177e4 LT	337	/*
	338	* External Functions
	339	*/
	340
	341	int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
	342	void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context);
4be44fcd LB	343	int acpi_bus_get_status(struct acpi_device *device);
	344	int acpi_bus_get_power(acpi_handle handle, int *state);
	345	int acpi_bus_set_power(acpi_handle handle, int state);
3737b2b1	346	bool acpi_bus_power_manageable(acpi_handle handle);
eb9d0fe4	347	bool acpi_bus_can_wakeup(acpi_handle handle);
14e04fb3 LB	348	#ifdef CONFIG_ACPI_PROC_EVENT
14e04fb3 LB	349	int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
8db85d4c	350	int acpi_bus_generate_proc_event4(const char class, const char bid, u8 type, int data);
4be44fcd	351	int acpi_bus_receive_event(struct acpi_bus_event *event);
14e04fb3 LB	352	#else
	353	static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
	354	{ return 0; }
	355	#endif
4be44fcd	356	int acpi_bus_register_driver(struct acpi_driver *driver);
06ea8e08	357	void acpi_bus_unregister_driver(struct acpi_driver *driver);
4be44fcd LB	358	int acpi_bus_add(struct acpi_device *child, struct acpi_device parent,
4be44fcd LB	359	acpi_handle handle, int type);
ceaba663	360	int acpi_bus_trim(struct acpi_device *start, int rmdevice);
4be44fcd	361	int acpi_bus_start(struct acpi_device *device);
fd350943	362	acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
8c8eb78f TR	363	int acpi_match_device_ids(struct acpi_device *device,
8c8eb78f TR	364	const struct acpi_device_id *ids);
1da177e4 LT	365	int acpi_create_dir(struct acpi_device *);
	366	void acpi_remove_dir(struct acpi_device *);
	367
4e10d12a DSL	368	/*
	369	* Bind physical devices with ACPI devices
	370	*/
	371	#include <linux/device.h>
	372	struct acpi_bus_type {
4be44fcd LB	373	struct list_head list;
	374	struct bus_type *bus;
	375	/* For general devices under the bus */
	376	int (find_device) (struct device , acpi_handle *);
4e10d12a	377	/* For bridges, such as PCI root bridge, IDE controller */
4be44fcd	378	int (find_bridge) (struct device , acpi_handle *);
4e10d12a DSL	379	};
	380	int register_acpi_bus_type(struct acpi_bus_type *);
	381	int unregister_acpi_bus_type(struct acpi_bus_type *);
	382	struct device *acpi_get_physical_device(acpi_handle);
	383	/* helper */
	384	acpi_handle acpi_get_child(acpi_handle, acpi_integer);
	385	acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
465ae641	386	#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle))
4e10d12a	387
296699de	388	#ifdef CONFIG_PM_SLEEP
06166780	389	int acpi_pm_device_sleep_state(struct device , int );
eb9d0fe4	390	int acpi_pm_device_sleep_wake(struct device *, bool);
296699de	391	#else /* !CONFIG_PM_SLEEP */
06166780	392	static inline int acpi_pm_device_sleep_state(struct device d, int p)
296699de RW	393	{
	394	if (p)
	395	*p = ACPI_STATE_D0;
	396	return ACPI_STATE_D3;
	397	}
f7a1b860 DH	398	static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
	399	{
	400	return -ENODEV;
	401	}
296699de	402	#endif /* !CONFIG_PM_SLEEP */
fd4aff1a	403
fd350943	404	#endif /* CONFIG_ACPI */
1da177e4 LT	405
1da177e4 LT	406	#endif /__ACPI_BUS_H__/