1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com> 4 */ 5 6 #ifndef __ASM_ACPI_H__ 7 #define __ASM_ACPI_H__ 8 9 struct acpi_fadt; 10 11 /** 12 * acpi_find_fadt() - find ACPI FADT table in the system memory 13 * 14 * This routine parses the ACPI table to locate the ACPI FADT table. 15 * 16 * @return: a pointer to the ACPI FADT table in the system memory 17 */ 18 struct acpi_fadt *acpi_find_fadt(void); 19 20 /** 21 * acpi_find_wakeup_vector() - find OS installed wake up vector address 22 * 23 * This routine parses the ACPI table to locate the wake up vector installed 24 * by the OS previously. 25 * 26 * @fadt: a pointer to the ACPI FADT table in the system memory 27 * @return: wake up vector address installed by the OS 28 */ 29 void *acpi_find_wakeup_vector(struct acpi_fadt *fadt); 30 31 /** 32 * enter_acpi_mode() - enter into ACPI mode 33 * 34 * This programs the ACPI-defined PM1_CNT register to enable SCI interrupt 35 * so that the whole system swiches to ACPI mode. 36 * 37 * @pm1_cnt: PM1_CNT register I/O address 38 */ 39 void enter_acpi_mode(int pm1_cnt); 40 41 #endif /* __ASM_ACPI_H__ */ 42