diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
new file mode 100644
index 0000000..c627bc4
--- /dev/null
+++ b/include/acpi/acpi_bus.h
@@ -0,0 +1,341 @@
+/*
+ *  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/kobject.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           *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_BUS
+
+#include <linux/proc_fs.h>
+
+#define ACPI_BUS_FILE_ROOT	"acpi"
+extern struct proc_dir_entry	*acpi_root_dir;
+extern FADT_DESCRIPTOR		acpi_fadt;
+
+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, int state);
+typedef int (*acpi_op_resume)	(struct acpi_device *device, int state);
+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_match)	(struct acpi_device *device,
+				 struct acpi_driver *driver);
+
+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_match		match;
+};
+
+struct acpi_driver {
+	struct list_head	node;
+	char			name[80];
+	char			class[80];
+	atomic_t		references;
+	char			*ids;		/* Supported Hardware IDs */
+	struct acpi_device_ops	ops;
+};
+
+/*
+ * 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			reserved:20;
+};
+
+
+/* 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[9];
+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	run_wake:1; /* Run-Wake GPE devices */
+};
+
+struct acpi_device_wakeup_state {
+	u8	enabled:1;
+	u8	active: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 kobject		kobj;
+};
+
+#define acpi_driver_data(d)	((d)->driver_data)
+
+
+/*
+ * 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 subsystem acpi_subsys;
+
+/*
+ * 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);
+int acpi_bus_generate_event (struct acpi_device *device, u8 type, int data);
+int acpi_bus_receive_event (struct acpi_bus_event *event);
+int acpi_bus_register_driver (struct acpi_driver *driver);
+int acpi_bus_unregister_driver (struct acpi_driver *driver);
+int acpi_bus_scan (struct acpi_device *start);
+int acpi_bus_add (struct acpi_device **child, struct acpi_device *parent,
+		acpi_handle handle, int type);
+
+
+int acpi_match_ids (struct acpi_device	*device, char	*ids);
+int acpi_create_dir(struct acpi_device *);
+void acpi_remove_dir(struct acpi_device *);
+
+#endif /*CONFIG_ACPI_BUS*/
+
+#endif /*__ACPI_BUS_H__*/