1 /* 2 * Copyright (c) 2025, MediaTek Inc. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <errno.h> 8 9 #include <common/debug.h> 10 11 #include <mtk_bl31_interface.h> 12 #include <mtk_sip_svc.h> 13 14 #define MODULE_TAG "[SLBC]" 15 16 enum { 17 MTK_SLBC_KERNEL_OP_CPU_DCC = 0, 18 }; 19 20 static u_register_t slbc_kernel_handler(u_register_t x1, u_register_t x2, 21 u_register_t x3, u_register_t x4, 22 void *handle, 23 struct smccc_res *smccc_ret) 24 { 25 uint32_t request_ops = (uint32_t)x1; 26 u_register_t ret = 0; 27 28 switch (request_ops) { 29 case MTK_SLBC_KERNEL_OP_CPU_DCC: 30 cpu_qos_change_dcc(x2, x3); 31 break; 32 default: 33 ERROR("%s: %s, unknown request_ops = %x\n", MODULE_TAG, __func__, request_ops); 34 ret = EIO; 35 break; 36 } 37 38 VERBOSE("%s: %s, request_ops = %x, ret = %lu\n", MODULE_TAG, __func__, request_ops, ret); 39 return ret; 40 } 41 42 /* Register SiP SMC service */ 43 DECLARE_SMC_HANDLER(MTK_SIP_KERNEL_SLBC_CONTROL, slbc_kernel_handler); 44