diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h
new file mode 100644
index 0000000..c62e92e
--- /dev/null
+++ b/include/acpi/acpi_drivers.h
@@ -0,0 +1,112 @@
+/*
+ *  acpi_drivers.h  ($Revision: 31 $)
+ *
+ *  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_DRIVERS_H__
+#define __ACPI_DRIVERS_H__
+
+#include <linux/acpi.h>
+#include <acpi/acpi_bus.h>
+
+
+#define ACPI_MAX_STRING			80
+
+#define ACPI_BUS_COMPONENT		0x00010000
+#define ACPI_SYSTEM_COMPONENT		0x02000000
+
+/* _HID definitions */
+
+#define ACPI_POWER_HID			"ACPI_PWR"
+#define ACPI_PROCESSOR_HID		"ACPI_CPU"
+#define ACPI_SYSTEM_HID			"ACPI_SYS"
+#define ACPI_THERMAL_HID		"ACPI_THM"
+#define ACPI_BUTTON_HID_POWERF		"ACPI_FPB"
+#define ACPI_BUTTON_HID_SLEEPF		"ACPI_FSB"
+
+
+/* --------------------------------------------------------------------------
+                                       PCI
+   -------------------------------------------------------------------------- */
+
+#ifdef CONFIG_ACPI_PCI
+
+#define ACPI_PCI_COMPONENT		0x00400000
+
+/* ACPI PCI Interrupt Link (pci_link.c) */
+
+int acpi_irq_penalty_init (void);
+int acpi_pci_link_get_irq (acpi_handle handle, int index, int *edge_level,
+	int *active_high_low, char **name);
+
+/* ACPI PCI Interrupt Routing (pci_irq.c) */
+
+int acpi_pci_irq_add_prt (acpi_handle handle, int segment, int bus);
+void acpi_pci_irq_del_prt (int segment, int bus);
+
+/* ACPI PCI Device Binding (pci_bind.c) */
+
+struct pci_bus;
+
+int acpi_pci_bind (struct acpi_device *device);
+int acpi_pci_unbind (struct acpi_device *device);
+int acpi_pci_bind_root (struct acpi_device *device, struct acpi_pci_id *id, struct pci_bus *bus);
+
+/* Arch-defined function to add a bus to the system */
+
+struct pci_bus *pci_acpi_scan_root(struct acpi_device *device, int domain, int bus);
+
+#endif /*CONFIG_ACPI_PCI*/
+
+
+/* --------------------------------------------------------------------------
+                                  Power Resource
+   -------------------------------------------------------------------------- */
+
+#ifdef CONFIG_ACPI_POWER
+int acpi_enable_wakeup_device_power (struct acpi_device *dev);
+int acpi_disable_wakeup_device_power (struct acpi_device *dev);
+int acpi_power_get_inferred_state (struct acpi_device *device);
+int acpi_power_transition (struct acpi_device *device, int state);
+#endif
+
+
+/* --------------------------------------------------------------------------
+                                  Embedded Controller
+   -------------------------------------------------------------------------- */
+#ifdef CONFIG_ACPI_EC
+int acpi_ec_ecdt_probe (void);
+#endif
+
+/* --------------------------------------------------------------------------
+                                    Processor
+   -------------------------------------------------------------------------- */
+
+#define ACPI_PROCESSOR_LIMIT_NONE	0x00
+#define ACPI_PROCESSOR_LIMIT_INCREMENT	0x01
+#define ACPI_PROCESSOR_LIMIT_DECREMENT	0x02
+
+int acpi_processor_set_thermal_limit(acpi_handle handle, int type);
+
+
+#endif /*__ACPI_DRIVERS_H__*/