| /* |
| * Copyright (c) 2022, MediaTek Inc. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <arch_helpers.h> |
| #include <common/debug.h> |
| #include <mt_spm.h> |
| #include <mt_spm_cond.h> |
| #include <mt_spm_conservation.h> |
| #include <mt_spm_constraint.h> |
| #include <mt_spm_idle.h> |
| #include <mt_spm_internal.h> |
| #include <mt_spm_notifier.h> |
| #include <mt_spm_rc_internal.h> |
| #include <mt_spm_reg.h> |
| #include <mt_spm_resource_req.h> |
| #include <mt_spm_suspend.h> |
| #include <plat_mtk_lpm.h> |
| #include <plat_pm.h> |
| |
| #define CONSTRAINT_CPU_BUCK_PCM_FLAG \ |
| (SPM_FLAG_DISABLE_INFRA_PDN | \ |
| SPM_FLAG_DISABLE_VCORE_DVS | \ |
| SPM_FLAG_DISABLE_VCORE_DFS | \ |
| SPM_FLAG_SRAM_SLEEP_CTRL | \ |
| SPM_FLAG_KEEP_CSYSPWRACK_HIGH) |
| |
| #define CONSTRAINT_CPU_BUCK_PCM_FLAG1 (0U) |
| |
| #define CONSTRAINT_CPU_BUCK_RESOURCE_REQ \ |
| (MT_SPM_DRAM_S1 | \ |
| MT_SPM_DRAM_S0 | \ |
| MT_SPM_SYSPLL | \ |
| MT_SPM_INFRA | \ |
| MT_SPM_26M | \ |
| MT_SPM_XO_FPM) |
| |
| static unsigned int cpubuckldo_status = MT_SPM_RC_VALID_SW; |
| static unsigned int cpubuckldo_enter_cnt; |
| |
| static void spm_cpu_bcuk_ldo_conduct(struct spm_lp_scen *spm_lp, |
| unsigned int *resource_req) |
| { |
| spm_lp->pwrctrl->pcm_flags = (uint32_t)CONSTRAINT_CPU_BUCK_PCM_FLAG; |
| spm_lp->pwrctrl->pcm_flags1 = (uint32_t)CONSTRAINT_CPU_BUCK_PCM_FLAG1; |
| *resource_req |= CONSTRAINT_CPU_BUCK_RESOURCE_REQ; |
| } |
| |
| bool spm_is_valid_rc_cpu_buck_ldo(unsigned int cpu, int state_id) |
| { |
| (void)cpu; |
| (void)state_id; |
| |
| return IS_MT_RM_RC_READY(cpubuckldo_status); |
| } |
| |
| unsigned int spm_allow_rc_cpu_buck_ldo(int state_id) |
| { |
| (void)state_id; |
| |
| return MT_RM_CONSTRAINT_ALLOW_CPU_BUCK_OFF; |
| } |
| |
| int spm_run_rc_cpu_buck_ldo(unsigned int cpu, int state_id) |
| { |
| (void)cpu; |
| unsigned int ext_op = 0U; |
| |
| #ifndef ATF_PLAT_SPM_SSPM_NOTIFIER_UNSUPPORT |
| mt_spm_sspm_notify_u32(MT_SPM_NOTIFY_LP_ENTER, |
| (IS_PLAT_SUSPEND_ID(state_id) ? |
| (MT_RM_CONSTRAINT_ALLOW_AP_SUSPEND) : (0U))); |
| #endif |
| if (IS_PLAT_SUSPEND_ID(state_id)) { |
| mt_spm_suspend_enter(state_id, |
| MT_SPM_EX_OP_SET_WDT, |
| CONSTRAINT_CPU_BUCK_RESOURCE_REQ); |
| } else { |
| mt_spm_idle_generic_enter(state_id, ext_op, |
| spm_cpu_bcuk_ldo_conduct); |
| } |
| |
| cpubuckldo_enter_cnt++; |
| |
| return 0; |
| } |
| |
| int spm_reset_rc_cpu_buck_ldo(unsigned int cpu, int state_id) |
| { |
| (void)cpu; |
| unsigned int ext_op = 0U; |
| |
| #ifndef ATF_PLAT_SPM_SSPM_NOTIFIER_UNSUPPORT |
| mt_spm_sspm_notify_u32(MT_SPM_NOTIFY_LP_LEAVE, 0U); |
| #endif |
| if (IS_PLAT_SUSPEND_ID(state_id)) { |
| mt_spm_suspend_resume(state_id, MT_SPM_EX_OP_SET_WDT, NULL); |
| } else { |
| mt_spm_idle_generic_resume(state_id, ext_op, NULL, NULL); |
| } |
| |
| return 0; |
| } |