/*
?*??acpi_ac.c?-?ACPI?AC?Adapter?Driver?（$Revision:?27?$）
?*
?*??Copyright?（C）?2001?2002?Andy?Grover?
?*??Copyright?（C）?2001?2002?Paul?Diefenbaugh?
?*
?*?~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
?*
?*??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?
#include?
#include?
#include?
#include?
#include?
#include?
#include?


#define?ACPI_AC_COMPONENT		0x00020000
#define?ACPI_AC_CLASS			“ac_adapter“
#define?ACPI_AC_HID?			“ACPI0003“
#define?ACPI_AC_DRIVER_NAME		“ACPI?AC?Adapter?Driver“
#define?ACPI_AC_DEVICE_NAME		“AC?Adapter“
#define?ACPI_AC_FILE_STATE		“state“
#define?ACPI_AC_NOTIFY_STATUS		0x80
#define?ACPI_AC_STATUS_OFFLINE		0x00
#define?ACPI_AC_STATUS_ONLINE		0x01
#define?ACPI_AC_STATUS_UNKNOWN		0xFF

#define?_COMPONENT		ACPI_AC_COMPONENT
ACPI_MODULE_NAME		（“acpi_ac“）

MODULE_AUTHOR（“Paul?Diefenbaugh“）;
MODULE_DEscriptION（ACPI_AC_DRIVER_NAME）;
MODULE_LICENSE（“GPL“）;

int?acpi_ac_add?（struct?acpi_device?*device）;
int?acpi_ac_remove?（struct?acpi_device?*device?int?type）;
static?int?acpi_ac_open_fs（struct?inode?*inode?struct?file?*file）;

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;
};

static?struct?file_operations?acpi_ac_fops?=?{
	.open		=?acpi_ac_open_fs
	.read		=?seq_read
	.llseek		=?seq_lseek
	.release	=?single_release
};

/*?--------------------------------------------------------------------------
???????????????????????????????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?Adap