// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* Copyright(c) 2021-2023 Realtek Corporation */ #include #include #include "acpi.h" #include "debug.h" #if defined(__linux__) static const guid_t rtw89_guid = GUID_INIT(0xD2A8C3E8, 0x4B69, 0x4F00, 0x82, 0xBD, 0xFE, 0x86, 0x07, 0x80, 0x3A, 0xA7); static int rtw89_acpi_dsm_get(struct rtw89_dev *rtwdev, union acpi_object *obj, u8 *value) { switch (obj->type) { case ACPI_TYPE_INTEGER: *value = (u8)obj->integer.value; break; case ACPI_TYPE_BUFFER: *value = obj->buffer.pointer[0]; break; default: rtw89_debug(rtwdev, RTW89_DBG_UNEXP, "acpi dsm return unhandled type: %d\n", obj->type); return -EINVAL; } return 0; } int rtw89_acpi_evaluate_dsm(struct rtw89_dev *rtwdev, enum rtw89_acpi_dsm_func func, u8 *value) { union acpi_object *obj; int ret; obj = acpi_evaluate_dsm(ACPI_HANDLE(rtwdev->dev), &rtw89_guid, 0, func, NULL); if (!obj) { rtw89_debug(rtwdev, RTW89_DBG_UNEXP, "acpi dsm fail to evaluate func: %d\n", func); return -ENOENT; } ret = rtw89_acpi_dsm_get(rtwdev, obj, value); ACPI_FREE(obj); return ret; } #elif defined(__FreeBSD__) int rtw89_acpi_evaluate_dsm(struct rtw89_dev *rtwdev, enum rtw89_acpi_dsm_func func, u8 *value) { return -ENOENT; } #endif