[PATCH] ACPI patch 2/9

This patch adds in the new drivers.

- Support for driverfs
- File/code layout more in the Linux style
- improvements to battery, processor, and thermal support

drivers/acpi/acpi_ac.c

+/*
+ *  acpi_ac.c - ACPI AC Adapter 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.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include "acpi_bus.h"
+#include "acpi_drivers.h"
+
+
+#define _COMPONENT		ACPI_AC_COMPONENT
+ACPI_MODULE_NAME		("acpi_ac")
+
+MODULE_AUTHOR("Paul Diefenbaugh");
+MODULE_DESCRIPTION(ACPI_AC_DRIVER_NAME);
+MODULE_LICENSE("GPL");
+
+#define PREFIX			"ACPI: "
+
+
+int acpi_ac_add (struct acpi_device *device);
+int acpi_ac_remove (struct acpi_device *device, int type);
+
+static struct acpi_driver acpi_ac_driver = {
+	name:			ACPI_AC_DRIVER_NAME,
+	class:			ACPI_AC_CLASS,
+	ids:			ACPI_AC_HID,
+	ops:			{
+					add:	acpi_ac_add,
+					remove:	acpi_ac_remove,
+				},
+};
+
+struct acpi_ac {
+	acpi_handle		handle;
+	unsigned long		state;
+};
+
+
+/* --------------------------------------------------------------------------
+                               AC Adapter Management
+   -------------------------------------------------------------------------- */
+
+static int
+acpi_ac_get_state (
+	struct acpi_ac		*ac)
+{
+	acpi_status		status = AE_OK;
+
+	ACPI_FUNCTION_TRACE("acpi_ac_get_state");
+
+	if (!ac)
+		return_VALUE(-EINVAL);
+
+	status = acpi_evaluate_integer(ac->handle, "_PSR", NULL, &ac->state);
+	if (ACPI_FAILURE(status)) {
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+			"Error reading AC Adapter state\n"));
+		ac->state = ACPI_AC_STATUS_UNKNOWN;
+		return_VALUE(-ENODEV);
+	}
+	
+	return_VALUE(0);
+}
+
+
+/* --------------------------------------------------------------------------
+                              FS Interface (/proc)
+   -------------------------------------------------------------------------- */
+
+#include <linux/compatmac.h>
+#include <linux/proc_fs.h>
+
+struct proc_dir_entry		*acpi_ac_dir = NULL;
+
+static int
+acpi_ac_read_state (
+	char			*page,
+	char			**start,
+	off_t			off,
+	int 			count,
+	int 			*eof,
+	void			*data)
+{
+	struct acpi_ac		*ac = (struct acpi_ac *) data;
+	char			*p = page;
+	int			len = 0;
+
+	ACPI_FUNCTION_TRACE("acpi_ac_read_state");
+
+	if (!ac || (off != 0))
+		goto end;
+
+	if (0 != acpi_ac_get_state(ac)) {
+		p += sprintf(p, "ERROR: Unable to read AC Adapter state\n");
+		goto end;
+	}
+
+	p += sprintf(p, "state:                   ");
+	switch (ac->state) {
+	case ACPI_AC_STATUS_OFFLINE:
+		p += sprintf(p, "off-line\n");
+		break;
+	case ACPI_AC_STATUS_ONLINE:
+		p += sprintf(p, "on-line\n");
+		break;
+	default:
+		p += sprintf(p, "unknown\n");
+		break;
+	}
+
+end:
+	len = (p - page);
+	if (len <= off+count) *eof = 1;
+	*start = page + off;
+	len -= off;
+	if (len>count) len = count;
+	if (len<0) len = 0;
+
+	return_VALUE(len);
+}
+
+
+static int
+acpi_ac_add_fs (
+	struct acpi_device	*device)
+{
+	struct proc_dir_entry	*entry = NULL;
+
+	ACPI_FUNCTION_TRACE("acpi_ac_add_fs");
+
+	if (!acpi_ac_dir) {
+		acpi_ac_dir = proc_mkdir(ACPI_AC_CLASS, acpi_root_dir);
+		if (!acpi_ac_dir)
+			return_VALUE(-ENODEV);
+	}
+
+	if (!acpi_device_dir(device)) {
+		acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
+			acpi_ac_dir);
+		if (!acpi_device_dir(device))
+			return_VALUE(-ENODEV);
+	}
+
+	/* 'state' [R] */
+	entry = create_proc_entry(ACPI_AC_FILE_STATE,
+		S_IRUGO, acpi_device_dir(device));
+	if (!entry)
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+			"Unable to create '%s' fs entry\n",
+			ACPI_AC_FILE_STATE));
+	else {
+		entry->read_proc = acpi_ac_read_state;
+		entry->data = acpi_driver_data(device);
+	}
+
+	return_VALUE(0);
+}
+
+
+static int
+acpi_ac_remove_fs (
+	struct acpi_device	*device)
+{
+	ACPI_FUNCTION_TRACE("acpi_ac_remove_fs");
+
+	if (!acpi_ac_dir)
+		return_VALUE(-ENODEV);
+
+	if (acpi_device_dir(device))
+		remove_proc_entry(acpi_device_bid(device), acpi_ac_dir);
+
+	return_VALUE(0);
+}
+
+
+/* --------------------------------------------------------------------------
+                                   Driver Model
+   -------------------------------------------------------------------------- */
+
+void
+acpi_ac_notify (
+	acpi_handle		handle,
+	u32			event,
+	void			*data)
+{
+	struct acpi_ac		*ac = (struct acpi_ac *) data;
+	struct acpi_device	*device = NULL;
+
+	ACPI_FUNCTION_TRACE("acpi_ac_notify");
+
+	if (!ac)
+		return;
+
+	if (0 != acpi_bus_get_device(ac->handle, &device))
+		return_VOID;
+
+	switch (event) {
+	case ACPI_AC_NOTIFY_STATUS:
+		acpi_ac_get_state(ac);
+		acpi_bus_generate_event(device, event, (u32) ac->state);
+		break;
+	default:
+		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+			"Unsupported event [0x%x]\n", event));
+		break;
+	}
+
+	return_VOID;
+}
+
+
+int
+acpi_ac_add (
+	struct acpi_device	*device)
+{
+	int			result = 0;
+	acpi_status		status = AE_OK;
+	struct acpi_ac		*ac = NULL;
+
+	ACPI_FUNCTION_TRACE("acpi_ac_add");
+
+	if (!device)
+		return_VALUE(-EINVAL);
+
+	ac = kmalloc(sizeof(struct acpi_ac), GFP_KERNEL);
+	if (!ac)
+		return_VALUE(-ENOMEM);
+	memset(ac, 0, sizeof(struct acpi_ac));
+
+	ac->handle = device->handle;
+	sprintf(acpi_device_name(device), "%s", ACPI_AC_DEVICE_NAME);
+	sprintf(acpi_device_class(device), "%s", ACPI_AC_CLASS);
+	acpi_driver_data(device) = ac;
+
+	result = acpi_ac_get_state(ac);
+	if (0 != result)
+		goto end;
+
+	result = acpi_ac_add_fs(device);
+	if (0 != result)
+		goto end;
+
+	status = acpi_install_notify_handler(ac->handle,
+		ACPI_DEVICE_NOTIFY, acpi_ac_notify, ac);
+	if (ACPI_FAILURE(status)) {
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+			"Error installing notify handler\n"));
+		result = -ENODEV;
+		goto end;
+	}
+
+	printk(KERN_INFO PREFIX "%s [%s] (%s)\n", 
+		acpi_device_name(device), acpi_device_bid(device), 
+		ac->state?"on-line":"off-line");
+
+end:
+	if (0 != result) {
+		acpi_ac_remove_fs(device);
+		kfree(ac);
+	}
+
+	return_VALUE(result);
+}
+
+
+int
+acpi_ac_remove (
+	struct acpi_device	*device,
+	int			type)
+{
+	acpi_status		status = AE_OK;
+	struct acpi_ac		*ac = NULL;
+
+	ACPI_FUNCTION_TRACE("acpi_ac_remove");
+	if (!device || !acpi_driver_data(device))
+		return_VALUE(-EINVAL);
+
+	ac = (struct acpi_ac *) acpi_driver_data(device);
+
+	status = acpi_remove_notify_handler(ac->handle,
+		ACPI_DEVICE_NOTIFY, acpi_ac_notify);
+	if (ACPI_FAILURE(status))
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+			"Error removing notify handler\n"));
+
+	acpi_ac_remove_fs(device);
+
+	kfree(ac);
+
+	return_VALUE(0);
+}
+
+
+int __init
+acpi_ac_init (void)
+{
+	int			result = 0;
+
+	ACPI_FUNCTION_TRACE("acpi_ac_init");
+
+	result = acpi_bus_register_driver(&acpi_ac_driver);
+	if (0 > result) {
+		remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir);
+		return_VALUE(-ENODEV);
+	}
+
+	return_VALUE(0);
+}
+
+
+void __exit
+acpi_ac_exit (void)
+{
+	int			result = 0;
+
+	ACPI_FUNCTION_TRACE("acpi_ac_exit");
+
+	result = acpi_bus_unregister_driver(&acpi_ac_driver);
+	if (0 == result)
+		remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir);
+
+	return_VOID;
+}
+
+
+module_init(acpi_ac_init);
+module_exit(acpi_ac_exit);

drivers/acpi/acpi_bus.h

+/*
+ *  acpi_bus.h - ACPI Bus Driver ($Revision: 17 $)
+ *
+ *  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/version.h>
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,4))
+#include <linux/device.h>
+#define CONFIG_LDM
+#endif
+
+#include "include/acpi.h"
+
+
+/* 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 (acpi_object *, acpi_buffer *, acpi_buffer *);
+acpi_status acpi_evaluate (acpi_handle, acpi_string, acpi_object_list *, acpi_buffer *);
+acpi_status acpi_evaluate_integer (acpi_handle, acpi_string, acpi_object_list *, unsigned long *);
+acpi_status acpi_evaluate_reference (acpi_handle, acpi_string, acpi_object_list *, struct acpi_handle_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);
+
+struct acpi_driver_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;
+};
+
+struct acpi_driver {
+	struct list_head	node;
+	char			name[80];
+	char			class[80];
+	int			references;
+	char			*ids;		/* Supported Hardware IDs */
+	struct acpi_driver_ops	ops;
+};
+
+enum acpi_blacklist_predicates
+{
+	all_versions,
+	less_than_or_equal,
+	equal,
+	greater_than_or_equal,
+};
+
+struct acpi_blacklist_item
+{
+	char		oem_id[7];
+	char		oem_table_id[9];
+	u32		oem_revision;
+	acpi_table_type table;
+	enum acpi_blacklist_predicates oem_revision_predicate;
+	char		*reason;
+	u32		is_critical_error;
+};
+
+
+/*
+ * 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 {
+	u8			dynamic_status:1;
+	u8			compatible_ids:1;
+	u8			removable:1;
+	u8			ejectable:1;
+	u8			lockable:1;
+	u8			suprise_removal_ok:1;
+	u8			power_manageable:1;
+	u8			performance_manageable:1;
+};
+
+
+/* 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 */
+	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 {
+	u8			explicit_get:1;		     /* _PSC present? */
+	u8			power_resources:1;	   /* Power resources */
+	u8			inrush_current:1;	  /* Serialize Dx->D0 */
+	u8			wake_capable:1;		 /* Wakeup supported? */
+	u8			wake_enabled:1;		/* Enabled for wakeup */
+	u8			power_removed:1;	   /* Optimize Dx->D0 */
+	u8			reserved:2;
+};
+
+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;
+};
+
+
+/* Device */
+
+struct acpi_device {
+	acpi_handle		handle;
+	struct acpi_device	*parent;
+	struct list_head	children;
+	struct list_head	node;
+	struct acpi_device_status status;
+	struct acpi_device_flags flags;
+	struct acpi_device_pnp	pnp;
+	struct acpi_device_power power;
+	struct acpi_device_perf	performance;
+	struct acpi_device_dir	dir;
+	struct acpi_driver	*driver;
+	void			*driver_data;
+#ifdef CONFIG_LDM
+	struct device		dev;
+#endif
+};
+
+#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;
+};
+
+
+/*
+ * External Functions
+ */
+
+int acpi_bus_get_device(acpi_handle, struct acpi_device **device);
+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 *device);
+int acpi_init (void);
+void acpi_exit (void);
+
+
+#endif /*CONFIG_ACPI_BUS*/
+
+#endif /*__ACPI_BUS_H__*/

drivers/acpi/acpi_button.c

+/*
+ *  acpi_button.c - ACPI Button 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.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include "acpi_bus.h"
+#include "acpi_drivers.h"
+
+
+#define _COMPONENT		ACPI_BUTTON_COMPONENT
+ACPI_MODULE_NAME		("acpi_button")
+
+MODULE_AUTHOR("Paul Diefenbaugh");
+MODULE_DESCRIPTION(ACPI_BUTTON_DRIVER_NAME);
+MODULE_LICENSE("GPL");
+
+#define PREFIX			"ACPI: "
+
+
+int acpi_button_add (struct acpi_device *device);
+int acpi_button_remove (struct acpi_device *device, int type);
+
+static struct acpi_driver acpi_button_driver = {
+	name:			ACPI_BUTTON_DRIVER_NAME,
+	class:			ACPI_BUTTON_CLASS,
+	ids:			"ACPI_FPB,ACPI_FSB,PNP0C0D,PNP0C0C,PNP0C0E",
+	ops:			{
+					add:	acpi_button_add,
+					remove:	acpi_button_remove,
+				},
+};
+
+struct acpi_button {
+	acpi_handle		handle;
+	struct acpi_device	*device;	/* Fixed button kludge */
+	u8			type;
+	unsigned long		pushed;
+};
+
+
+/* --------------------------------------------------------------------------
+                              FS Interface (/proc)
+   -------------------------------------------------------------------------- */
+
+#include <linux/compatmac.h>
+#include <linux/proc_fs.h>
+
+struct proc_dir_entry		*acpi_button_dir = NULL;
+
+
+static int
+acpi_button_read_info (
+	char			*page,
+	char			**start,
+	off_t			off,
+	int 			count,
+	int 			*eof,
+	void			*data)
+{
+	int			result = 0;
+	struct acpi_button	*button = (struct acpi_button *) data;
+	char			*p = page;
+	int			len = 0;
+
+	ACPI_FUNCTION_TRACE("acpi_button_read_info");
+
+	if (!button || !button->device)
+		goto end;
+
+	p += sprintf(p, "type:                    %s\n", 
+		acpi_device_name(button->device));
+
+end:
+	len = (p - page);
+	if (len <= off+count) *eof = 1;
+	*start = page + off;
+	len -= off;
+	if (len>count) len = count;
+	if (len<0) len = 0;
+
+	return_VALUE(len);
+}
+
+
+static int
+acpi_button_add_fs (
+	struct acpi_device	*device)
+{
+	struct proc_dir_entry	*entry = NULL;
+
+	ACPI_FUNCTION_TRACE("acpi_button_add_fs");
+
+	if (!acpi_button_dir) {
+		acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir);
+		if (!acpi_button_dir)
+			return_VALUE(-ENODEV);
+	}
+
+	if (!acpi_device_dir(device)) {
+		acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
+			acpi_button_dir);
+		if (!acpi_device_dir(device))
+			return_VALUE(-ENODEV);
+	}
+
+	/* 'info' [R] */
+	entry = create_proc_entry(ACPI_BUTTON_FILE_INFO,
+		S_IRUGO, acpi_device_dir(device));
+	if (!entry)
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+			"Unable to create '%s' fs entry\n",
+			ACPI_BUTTON_FILE_INFO));
+	else {
+		entry->read_proc = acpi_button_read_info;
+		entry->data = acpi_driver_data(device);
+	}
+
+	return_VALUE(0);
+}
+
+
+static int
+acpi_button_remove_fs (
+	struct acpi_device	*device)
+{
+	ACPI_FUNCTION_TRACE("acpi_button_remove_fs");
+
+	if (!acpi_button_dir)
+		return_VALUE(-ENODEV);
+
+	if (acpi_device_dir(device))
+		remove_proc_entry(acpi_device_bid(device), acpi_button_dir);
+
+	return_VALUE(0);
+}
+
+
+/* --------------------------------------------------------------------------
+                                Driver Interface
+   -------------------------------------------------------------------------- */
+
+void
+acpi_button_notify (
+	acpi_handle		handle,
+	u32			event,
+	void			*data)
+{
+	struct acpi_button	*button = (struct acpi_button *) data;
+
+	ACPI_FUNCTION_TRACE("acpi_button_notify");
+
+	if (!button || !button->device)
+		return_VOID;
+
+	switch (event) {
+	case ACPI_BUTTON_NOTIFY_STATUS:
+		acpi_bus_generate_event(button->device, event, ++button->pushed);
+		break;
+	default:
+		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+			"Unsupported event [0x%x]\n", event));
+		break;
+	}
+
+	return_VOID;
+}
+
+
+acpi_status
+acpi_button_notify_fixed (
+	void			*data)
+{
+	struct acpi_button	*button = (struct acpi_button *) data;
+	
+	ACPI_FUNCTION_TRACE("acpi_button_notify_fixed");
+
+	if (!button)
+		return_ACPI_STATUS(AE_BAD_PARAMETER);
+
+	acpi_button_notify(button->handle, ACPI_BUTTON_NOTIFY_STATUS, button);
+
+	return_ACPI_STATUS(AE_OK);
+}
+
+
+int
+acpi_button_add (
+	struct acpi_device	*device)
+{
+	int			result = 0;
+	acpi_status		status = AE_OK;
+	struct acpi_button	*button = NULL;
+
+	ACPI_FUNCTION_TRACE("acpi_button_add");
+
+	if (!device)
+		return_VALUE(-EINVAL);
+
+	button = kmalloc(sizeof(struct acpi_button), GFP_KERNEL);
+	if (!button)
+		return_VALUE(-ENOMEM);
+	memset(button, 0, sizeof(struct acpi_button));
+
+	button->device = device;
+	button->handle = device->handle;
+	sprintf(acpi_device_class(device), "%s", ACPI_BUTTON_CLASS);
+	acpi_driver_data(device) = button;
+
+	/*
+	 * Determine the button type (via hid), as fixed-feature buttons
+	 * need to be handled a bit differently than generic-space.
+	 */
+	if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWERF)) {
+		button->type = ACPI_BUTTON_TYPE_POWERF;
+		sprintf(acpi_device_name(device), "%s",
+			ACPI_BUTTON_DEVICE_NAME_POWERF);
+	}
+	else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEPF)) {
+		button->type = ACPI_BUTTON_TYPE_SLEEPF;
+		sprintf(acpi_device_name(device), "%s",
+			ACPI_BUTTON_DEVICE_NAME_SLEEPF);
+	}
+	else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWER)) {
+		button->type = ACPI_BUTTON_TYPE_POWER;
+		sprintf(acpi_device_name(device), "%s",
+			ACPI_BUTTON_DEVICE_NAME_POWER);
+	}
+	else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEP)) {
+		button->type = ACPI_BUTTON_TYPE_SLEEP;
+		sprintf(acpi_device_name(device), "%s",
+			ACPI_BUTTON_DEVICE_NAME_SLEEP);
+	}
+	else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_LID)) {
+		button->type = ACPI_BUTTON_TYPE_LID;
+		sprintf(acpi_device_name(device), "%s",
+			ACPI_BUTTON_DEVICE_NAME_LID);
+	}
+	else {
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unsupported hid [%s]\n",
+			acpi_device_hid(device)));
+		result = -ENODEV;
+		goto end;
+	}
+
+	result = acpi_button_add_fs(device);
+	if (0 != result)
+		goto end;
+
+	switch (button->type) {
+	case ACPI_BUTTON_TYPE_POWERF:
+		status = acpi_install_fixed_event_handler (
+			ACPI_EVENT_POWER_BUTTON,
+			acpi_button_notify_fixed,
+			button);
+		break;
+	case ACPI_BUTTON_TYPE_SLEEPF:
+		status = acpi_install_fixed_event_handler (
+			ACPI_EVENT_SLEEP_BUTTON,
+			acpi_button_notify_fixed,
+			button);
+		break;
+	default:
+		status = acpi_install_notify_handler (
+			button->handle,
+			ACPI_DEVICE_NOTIFY,
+			acpi_button_notify,
+			button);
+		break;
+	}
+
+	if (ACPI_FAILURE(status)) {
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+			"Error installing notify handler\n"));
+		result = -ENODEV;
+		goto end;
+	}
+
+	printk(KERN_INFO PREFIX "%s [%s]\n", 
+		acpi_device_name(device), acpi_device_bid(device));
+
+end:
+	if (0 != result) {
+		acpi_button_remove_fs(device);
+		kfree(button);
+	}
+
+	return_VALUE(result);
+}
+
+
+int
+acpi_button_remove (struct acpi_device *device, int type)
+{
+	acpi_status		status = 0;
+	struct acpi_button	*button = NULL;
+
+	ACPI_FUNCTION_TRACE("acpi_button_remove");
+
+	if (!device || !acpi_driver_data(device))
+		return_VALUE(-EINVAL);
+
+	button = acpi_driver_data(device);
+
+	/* Unregister for device notifications. */
+	switch (button->type) {
+	case ACPI_BUTTON_TYPE_POWERF:
+		status = acpi_remove_fixed_event_handler(
+			ACPI_EVENT_POWER_BUTTON, acpi_button_notify_fixed);
+		break;
+	case ACPI_BUTTON_TYPE_SLEEPF:
+		status = acpi_remove_fixed_event_handler(
+			ACPI_EVENT_SLEEP_BUTTON, acpi_button_notify_fixed);
+		break;
+	default:
+		status = acpi_remove_notify_handler(button->handle,
+			ACPI_DEVICE_NOTIFY, acpi_button_notify);
+		break;
+	}
+
+	if (ACPI_FAILURE(status))
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+			"Error removing notify handler\n"));
+
+	acpi_button_remove_fs(device);	
+
+	kfree(button);
+
+	return_VALUE(0);
+}
+
+
+static int __init
+acpi_button_init (void)
+{
+	int			result = 0;
+
+	ACPI_FUNCTION_TRACE("acpi_button_init");
+
+	result = acpi_bus_register_driver(&acpi_button_driver);
+	if (0 > result)
+		return_VALUE(-ENODEV);
+
+	return_VALUE(0);
+}
+
+
+static void __exit
+acpi_button_exit (void)
+{
+	ACPI_FUNCTION_TRACE("acpi_button_exit");
+
+	acpi_bus_unregister_driver(&acpi_button_driver);
+
+	return_VOID;
+}
+
+
+module_init(acpi_button_init);
+module_exit(acpi_button_exit);

drivers/acpi/acpi_fan.c

+/*
+ *  acpi_fan.c - ACPI Fan Driver ($Revision: 25 $)
+ *
+ *  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.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include "acpi_bus.h"
+#include "acpi_drivers.h"
+
+
+#define _COMPONENT		ACPI_FAN_COMPONENT
+ACPI_MODULE_NAME		("acpi_fan")
+
+MODULE_AUTHOR("Paul Diefenbaugh");
+MODULE_DESCRIPTION(ACPI_FAN_DRIVER_NAME);
+MODULE_LICENSE("GPL");
+
+#define PREFIX			"ACPI: "
+
+
+int acpi_fan_add (struct acpi_device *device);
+int acpi_fan_remove (struct acpi_device *device, int type);
+
+static struct acpi_driver acpi_fan_driver = {
+	name:			ACPI_FAN_DRIVER_NAME,
+	class:			ACPI_FAN_CLASS,
+	ids:			ACPI_FAN_HID,
+	ops:			{
+					add:	acpi_fan_add,
+					remove:	acpi_fan_remove,
+				},
+};
+
+struct acpi_fan {
+	acpi_handle		handle;
+};
+
+
+/* --------------------------------------------------------------------------
+                              FS Interface (/proc)
+   -------------------------------------------------------------------------- */
+
+#include <linux/compatmac.h>
+#include <linux/proc_fs.h>
+
+struct proc_dir_entry		*acpi_fan_dir = NULL;
+
+
+static int
+acpi_fan_read_state (
+	char			*page,
+	char			**start,
+	off_t			off,
+	int 			count,
+	int 			*eof,
+	void			*data)
+{
+	struct acpi_fan		*fan = (struct acpi_fan *) data;
+	char			*p = page;
+	int			len = 0;
+	int			state = 0;
+
+	ACPI_FUNCTION_TRACE("acpi_fan_read_state");
+
+	if (!fan || (off != 0))
+		goto end;
+
+	if (0 != acpi_bus_get_power(fan->handle, &state))
+		goto end;
+
+	p += sprintf(p, "status:                  %s\n",
+		!state?"on":"off");
+
+end:
+	len = (p - page);
+	if (len <= off+count) *eof = 1;
+	*start = page + off;
+	len -= off;
+	if (len>count) len = count;
+	if (len<0) len = 0;
+
+	return_VALUE(len);
+}
+
+
+static int
+acpi_fan_write_state (
+	struct file		*file,
+	const char		*buffer,
+	unsigned long		count,
+	void			*data)
+{
+	int			result = 0;
+	struct acpi_fan		*fan = (struct acpi_fan *) data;
+	char			state_string[12] = {'\0'};
+
+	ACPI_FUNCTION_TRACE("acpi_fan_write_state");
+
+	if (!fan || (count > sizeof(state_string) - 1))
+		return_VALUE(-EINVAL);
+	
+	if (copy_from_user(state_string, buffer, count))
+		return_VALUE(-EFAULT);
+	
+	state_string[count] = '\0';
+	
+	result = acpi_bus_set_power(fan->handle, 
+		simple_strtoul(state_string, NULL, 0));
+	if (0 != result)
+		return_VALUE(result);
+
+	return_VALUE(count);
+}
+
+
+static int
+acpi_fan_add_fs (
+	struct acpi_device	*device)
+{
+	struct proc_dir_entry	*entry = NULL;
+
+	ACPI_FUNCTION_TRACE("acpi_fan_add_fs");
+
+	if (!device)
+		return_VALUE(-EINVAL);
+
+	if (!acpi_fan_dir) {
+		acpi_fan_dir = proc_mkdir(ACPI_FAN_CLASS, acpi_root_dir);
+		if (!acpi_fan_dir)
+			return_VALUE(-ENODEV);
+	}
+
+	if (!acpi_device_dir(device)) {
+		acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
+			acpi_fan_dir);
+		if (!acpi_device_dir(device))
+			return_VALUE(-ENODEV);
+	}
+
+	/* 'status' [R/W] */
+	entry = create_proc_entry(ACPI_FAN_FILE_STATE,
+		S_IFREG|S_IRUGO|S_IWUSR, acpi_device_dir(device));
+	if (!entry)
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+			"Unable to create '%s' fs entry\n",
+			ACPI_FAN_FILE_STATE));
+	else {
+		entry->read_proc = acpi_fan_read_state;
+		entry->write_proc = acpi_fan_write_state;
+		entry->data = acpi_driver_data(device);
+	}
+
+	return_VALUE(0);
+}
+
+
+static int
+acpi_fan_remove_fs (
+	struct acpi_device	*device)
+{
+	ACPI_FUNCTION_TRACE("acpi_fan_remove_fs");
+
+	if (!acpi_fan_dir)
+		return_VALUE(-ENODEV);
+
+	if (acpi_device_dir(device))
+		remove_proc_entry(acpi_device_bid(device), acpi_fan_dir);
+
+	return_VALUE(0);
+}
+
+
+/* --------------------------------------------------------------------------
+                                 Driver Interface
+   -------------------------------------------------------------------------- */
+
+int
+acpi_fan_add (
+	struct acpi_device	*device)
+{
+	int			result = 0;
+	struct acpi_fan		*fan = NULL;
+	int			state = 0;
+
+	ACPI_FUNCTION_TRACE("acpi_fan_add");
+
+	if (!device)
+		return_VALUE(-EINVAL);
+
+	fan = kmalloc(sizeof(struct acpi_fan), GFP_KERNEL);
+	if (!fan)
+		return_VALUE(-ENOMEM);
+	memset(fan, 0, sizeof(struct acpi_fan));
+
+	fan->handle = device->handle;
+	sprintf(acpi_device_name(device), "%s", ACPI_FAN_DEVICE_NAME);
+	sprintf(acpi_device_class(device), "%s", ACPI_FAN_CLASS);
+	acpi_driver_data(device) = fan;
+
+	result = acpi_bus_get_power(fan->handle, &state);
+	if (0 != result) {
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+			"Error reading power state\n"));
+		goto end;
+	}
+
+	result = acpi_fan_add_fs(device);
+	if (0 != result)
+		goto end;
+
+	printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
+		acpi_device_name(device), acpi_device_bid(device),
+		!device->power.state?"on":"off");
+
+end:
+	if (0 != result)
+		kfree(fan);
+
+	return_VALUE(result);
+}
+
+
+int
+acpi_fan_remove (
+	struct acpi_device	*device,
+	int			type)
+{
+	struct acpi_fan		*fan = NULL;
+
+	ACPI_FUNCTION_TRACE("acpi_fan_remove");
+
+	if (!device || !acpi_driver_data(device))
+		return_VALUE(-EINVAL);
+
+	fan = (struct acpi_fan *) acpi_driver_data(device);
+
+	acpi_fan_remove_fs(device);
+
+	kfree(fan);
+
+	return_VALUE(0);
+}
+
+
+int __init
+acpi_fan_init (void)
+{
+	int			result = 0;
+
+	ACPI_FUNCTION_TRACE("acpi_fan_init");
+
+	result = acpi_bus_register_driver(&acpi_fan_driver);
+	if (0 > result)
+		return_VALUE(-ENODEV);
+
+	return_VALUE(0);
+}
+
+
+void __exit
+acpi_fan_exit (void)
+{
+	int			result = 0;
+
+	ACPI_FUNCTION_TRACE("acpi_fan_exit");
+
+	result = acpi_bus_unregister_driver(&acpi_fan_driver);
+	if (0 == result)
+		remove_proc_entry(ACPI_FAN_CLASS, acpi_root_dir);
+
+	return_VOID;
+}
+
+
+module_init(acpi_fan_init);
+module_exit(acpi_fan_exit);
+

drivers/acpi/acpi_ksyms.c

 /*
- *  ksyms.c - ACPI exported symbols
+ *  acpi_ksyms.c - ACPI Kernel Symbols ($Revision: 13 $)
  *
- *  Copyright (C) 2000 Andrew Grover
+ *  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.
+ *  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.
  *
- *  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.
  *
- *  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
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
 
-#include <linux/config.h>
 #include <linux/module.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/acpi.h>
-#include "acpi.h"
-#include "acdebug.h"
+#include "include/acpi.h"
+#include "acpi_bus.h"
 
-extern int acpi_in_debugger;
-extern FADT_DESCRIPTOR acpi_fadt;
 
-#define _COMPONENT	OS_DEPENDENT
-	MODULE_NAME	("symbols")
+#ifdef CONFIG_ACPI_INTERPRETER
+
+/* ACPI Debugger */
 
 #ifdef ENABLE_DEBUGGER
+
+extern int			acpi_in_debugger;
+
 EXPORT_SYMBOL(acpi_in_debugger);
 EXPORT_SYMBOL(acpi_db_user_commands);
-#endif
+
+#endif /* ENABLE_DEBUGGER */
+
+/* ACPI Core Subsystem */
 
 #ifdef ACPI_DEBUG
+EXPORT_SYMBOL(acpi_dbg_layer);
+EXPORT_SYMBOL(acpi_dbg_level);
 EXPORT_SYMBOL(acpi_ut_debug_print_raw);
 EXPORT_SYMBOL(acpi_ut_debug_print);
 EXPORT_SYMBOL(acpi_ut_status_exit);
+EXPORT_SYMBOL(acpi_ut_value_exit);
 EXPORT_SYMBOL(acpi_ut_exit);
 EXPORT_SYMBOL(acpi_ut_trace);
-#endif
-
-EXPORT_SYMBOL(acpi_gbl_FADT);
-
-EXPORT_SYMBOL(acpi_os_free);
-EXPORT_SYMBOL(acpi_os_printf);
-EXPORT_SYMBOL(acpi_os_callocate);
-EXPORT_SYMBOL(acpi_os_sleep);
-EXPORT_SYMBOL(acpi_os_stall);
-EXPORT_SYMBOL(acpi_os_queue_for_execution);
-
-EXPORT_SYMBOL(acpi_dbg_layer);
-EXPORT_SYMBOL(acpi_dbg_level);
-
-EXPORT_SYMBOL(acpi_format_exception);
+#endif /*ACPI_DEBUG*/
 
 EXPORT_SYMBOL(acpi_get_handle);
 EXPORT_SYMBOL(acpi_get_parent);
@@ -68,7 +62,6 @@ EXPORT_SYMBOL(acpi_get_object_info);
 EXPORT_SYMBOL(acpi_get_next_object);
 EXPORT_SYMBOL(acpi_evaluate_object);
 EXPORT_SYMBOL(acpi_get_table);
-
 EXPORT_SYMBOL(acpi_install_notify_handler);
 EXPORT_SYMBOL(acpi_remove_notify_handler);
 EXPORT_SYMBOL(acpi_install_gpe_handler);
@@ -77,39 +70,61 @@ EXPORT_SYMBOL(acpi_install_address_space_handler);
 EXPORT_SYMBOL(acpi_remove_address_space_handler);
 EXPORT_SYMBOL(acpi_install_fixed_event_handler);
 EXPORT_SYMBOL(acpi_remove_fixed_event_handler);
-
 EXPORT_SYMBOL(acpi_acquire_global_lock);
 EXPORT_SYMBOL(acpi_release_global_lock);
-
 EXPORT_SYMBOL(acpi_get_current_resources);
 EXPORT_SYMBOL(acpi_get_possible_resources);
 EXPORT_SYMBOL(acpi_set_current_resources);
-
 EXPORT_SYMBOL(acpi_enable_event);
 EXPORT_SYMBOL(acpi_disable_event);
 EXPORT_SYMBOL(acpi_clear_event);
-
 EXPORT_SYMBOL(acpi_get_timer_duration);
 EXPORT_SYMBOL(acpi_get_timer);
+EXPORT_SYMBOL(acpi_hw_get_sleep_type_data);
+EXPORT_SYMBOL(acpi_hw_bit_register_read);
+EXPORT_SYMBOL(acpi_hw_bit_register_write);
+EXPORT_SYMBOL(acpi_enter_sleep_state);
+EXPORT_SYMBOL(acpi_get_system_info);
+
+/* ACPI OS Services Layer (acpi_osl.c) */
 
+EXPORT_SYMBOL(acpi_os_free);
+EXPORT_SYMBOL(acpi_os_printf);
+EXPORT_SYMBOL(acpi_os_sleep);
+EXPORT_SYMBOL(acpi_os_stall);
+EXPORT_SYMBOL(acpi_os_signal);
+EXPORT_SYMBOL(acpi_os_queue_for_execution);
 EXPORT_SYMBOL(acpi_os_signal_semaphore);
 EXPORT_SYMBOL(acpi_os_create_semaphore);
 EXPORT_SYMBOL(acpi_os_delete_semaphore);
 EXPORT_SYMBOL(acpi_os_wait_semaphore);
 
-EXPORT_SYMBOL(acpi_os_read_port);
-EXPORT_SYMBOL(acpi_os_write_port);
+/* ACPI Utilities (acpi_utils.c) */
+
+EXPORT_SYMBOL(acpi_extract_package);
+EXPORT_SYMBOL(acpi_evaluate);
+EXPORT_SYMBOL(acpi_evaluate_integer);
+EXPORT_SYMBOL(acpi_evaluate_reference);
+
+#endif /*CONFIG_ACPI_INTERPRETER*/
+
+
+/* ACPI Bus Driver (acpi_bus.c) */
+
+#ifdef CONFIG_ACPI_BUS
 
 EXPORT_SYMBOL(acpi_fadt);
-EXPORT_SYMBOL(acpi_hw_register_bit_access);
-EXPORT_SYMBOL(acpi_hw_obtain_sleep_type_register_data);
-EXPORT_SYMBOL(acpi_enter_sleep_state);
-EXPORT_SYMBOL(acpi_get_system_info);
-EXPORT_SYMBOL(acpi_leave_sleep_state);
-/*EXPORT_SYMBOL(acpi_save_state_mem);*/
-/*EXPORT_SYMBOL(acpi_save_state_disk);*/
-EXPORT_SYMBOL(acpi_hw_register_read);
-EXPORT_SYMBOL(acpi_set_firmware_waking_vector);
-EXPORT_SYMBOL(acpi_subsystem_status);
+EXPORT_SYMBOL(acpi_root_dir);
+EXPORT_SYMBOL(acpi_bus_get_device);
+EXPORT_SYMBOL(acpi_bus_get_status);
+EXPORT_SYMBOL(acpi_bus_get_power);
+EXPORT_SYMBOL(acpi_bus_set_power);
+EXPORT_SYMBOL(acpi_bus_generate_event);
+EXPORT_SYMBOL(acpi_bus_receive_event);
+EXPORT_SYMBOL(acpi_bus_register_driver);
+EXPORT_SYMBOL(acpi_bus_unregister_driver);
+EXPORT_SYMBOL(acpi_bus_scan);
+EXPORT_SYMBOL(acpi_init);
+
+#endif /*CONFIG_ACPI_BUS*/
 
-EXPORT_SYMBOL(acpi_os_signal);