1 /*
2  * Copyright (c) 2020, MediaTek Inc. All rights reserved.
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  */
6 
7 #include <mtk_dcm.h>
8 #include <mtk_dcm_utils.h>
9 
dcm_armcore(bool mode)10 static void dcm_armcore(bool mode)
11 {
12 	dcm_mp_cpusys_top_bus_pll_div_dcm(mode);
13 	dcm_mp_cpusys_top_cpu_pll_div_0_dcm(mode);
14 	dcm_mp_cpusys_top_cpu_pll_div_1_dcm(mode);
15 }
16 
dcm_mcusys(bool on)17 static void dcm_mcusys(bool on)
18 {
19 	dcm_mp_cpusys_top_adb_dcm(on);
20 	dcm_mp_cpusys_top_apb_dcm(on);
21 	dcm_mp_cpusys_top_cpubiu_dcm(on);
22 	dcm_mp_cpusys_top_misc_dcm(on);
23 	dcm_mp_cpusys_top_mp0_qdcm(on);
24 	dcm_cpccfg_reg_emi_wfifo(on);
25 	dcm_mp_cpusys_top_last_cor_idle_dcm(on);
26 }
27 
dcm_stall(bool on)28 static void dcm_stall(bool on)
29 {
30 	dcm_mp_cpusys_top_core_stall_dcm(on);
31 	dcm_mp_cpusys_top_fcm_stall_dcm(on);
32 }
33 
check_dcm_state(void)34 static bool check_dcm_state(void)
35 {
36 	bool ret = true;
37 
38 	ret &= dcm_mp_cpusys_top_bus_pll_div_dcm_is_on();
39 	ret &= dcm_mp_cpusys_top_cpu_pll_div_0_dcm_is_on();
40 	ret &= dcm_mp_cpusys_top_cpu_pll_div_1_dcm_is_on();
41 
42 	ret &= dcm_mp_cpusys_top_adb_dcm_is_on();
43 	ret &= dcm_mp_cpusys_top_apb_dcm_is_on();
44 	ret &= dcm_mp_cpusys_top_cpubiu_dcm_is_on();
45 	ret &= dcm_mp_cpusys_top_misc_dcm_is_on();
46 	ret &= dcm_mp_cpusys_top_mp0_qdcm_is_on();
47 	ret &= dcm_cpccfg_reg_emi_wfifo_is_on();
48 	ret &= dcm_mp_cpusys_top_last_cor_idle_dcm_is_on();
49 
50 	ret &= dcm_mp_cpusys_top_core_stall_dcm_is_on();
51 	ret &= dcm_mp_cpusys_top_fcm_stall_dcm_is_on();
52 
53 	return ret;
54 }
55 
dcm_set_default(void)56 bool dcm_set_default(void)
57 {
58 	dcm_armcore(true);
59 	dcm_mcusys(true);
60 	dcm_stall(true);
61 
62 	return check_dcm_state();
63 }
64