From a0609a8d19d4a9a86572fffb7cb8a3661fffbcf7 Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Wed, 18 Jul 2018 21:42:15 -0700 Subject: x86: acpi: Move APIs unrelated to ACPI tables generation to a separate library acpi_find_fadt(), acpi_find_wakeup_vector() and enter_acpi_mode() are something unrelated to ACPI tables generation. Move these to a separate library. This also fixes several style issues reported by checkpatch in the original codes. Signed-off-by: Bin Meng Reviewed-by: Simon Glass Tested-by: Andy Shevchenko --- arch/x86/include/asm/acpi.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 arch/x86/include/asm/acpi.h (limited to 'arch/x86/include/asm/acpi.h') diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h new file mode 100644 index 0000000000..4475d046e8 --- /dev/null +++ b/arch/x86/include/asm/acpi.h @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2018, Bin Meng + */ + +#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__ */ -- cgit