| /* 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__ */ |
