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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
*/
#ifndef __ASM_ACPI_H__
#define __ASM_ACPI_H__
struct acpi_fadt;
/**
* acpi_find_fadt() - find ACPI FADT table in the system memory
*
* This routine parses the ACPI table to locate the ACPI FADT table.
*
* @return: a pointer to the ACPI FADT table in the system memory
*/
struct acpi_fadt *acpi_find_fadt(void);
/**
* acpi_find_wakeup_vector() - find OS installed wake up vector address
*
* This routine parses the ACPI table to locate the wake up vector installed
* by the OS previously.
*
* @fadt: a pointer to the ACPI FADT table in the system memory
* @return: wake up vector address installed by the OS
*/
void *acpi_find_wakeup_vector(struct acpi_fadt *fadt);
/**
* enter_acpi_mode() - enter into ACPI mode
*
* This programs the ACPI-defined PM1_CNT register to enable SCI interrupt
* so that the whole system swiches to ACPI mode.
*
* @pm1_cnt: PM1_CNT register I/O address
*/
void enter_acpi_mode(int pm1_cnt);
#endif /* __ASM_ACPI_H__ */
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