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