1 /* 2 * Copyright (c) 2022, MediaTek Inc. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <arch_helpers.h> 8 #include <common/debug.h> 9 #include <mt_lp_rm.h> 10 #include <mt_spm.h> 11 #include <mt_spm_cond.h> 12 #include <mt_spm_conservation.h> 13 #include <mt_spm_constraint.h> 14 #include <mt_spm_idle.h> 15 #include <mt_spm_internal.h> 16 #include <mt_spm_notifier.h> 17 #include <mt_spm_rc_internal.h> 18 #include <mt_spm_reg.h> 19 #include <mt_spm_resource_req.h> 20 #include <mt_spm_suspend.h> 21 #include <plat_mtk_lpm.h> 22 #include <plat_pm.h> 23 24 #define CONSTRAINT_DRAM_ALLOW \ 25 (MT_RM_CONSTRAINT_ALLOW_DRAM_S0 | \ 26 MT_RM_CONSTRAINT_ALLOW_DRAM_S1 | \ 27 MT_RM_CONSTRAINT_ALLOW_CPU_BUCK_OFF) 28 29 #define CONSTRAINT_DRAM_PCM_FLAG \ 30 (SPM_FLAG_DISABLE_INFRA_PDN | \ 31 SPM_FLAG_DISABLE_VCORE_DVS | \ 32 SPM_FLAG_DISABLE_VCORE_DFS | \ 33 SPM_FLAG_SRAM_SLEEP_CTRL | \ 34 SPM_FLAG_KEEP_CSYSPWRACK_HIGH) 35 36 #define CONSTRAINT_DRAM_PCM_FLAG1 (0U) 37 38 #define CONSTRAINT_DRAM_RESOURCE_REQ \ 39 (MT_SPM_SYSPLL | \ 40 MT_SPM_INFRA | \ 41 MT_SPM_26M) 42 43 static struct mt_spm_cond_tables cond_dram = { 44 .name = "dram", 45 .table_cg = { 46 0x0385E03C, /* MTCMOS1 */ 47 0x003F0100, /* INFRA0 */ 48 0x08040802, /* INFRA1 */ 49 0x06015641, /* INFRA2 */ 50 0x00000000, /* INFRA3 */ 51 0x00000000, /* INFRA4 */ 52 0x00000000, /* INFRA5 */ 53 0x02300020, /* MMSYS0 */ 54 0x00000000, /* MMSYS1 */ 55 0x00000000, /* MMSYS2 */ 56 0x00015111, /* MMSYS3 */ 57 }, 58 .table_pll = 0U, 59 }; 60 61 static struct mt_spm_cond_tables cond_dram_res = { 62 .table_cg = {0U}, 63 .table_pll = 0U, 64 }; 65 66 static struct constraint_status status = { 67 .id = MT_RM_CONSTRAINT_ID_DRAM, 68 .valid = (MT_SPM_RC_VALID_SW | 69 MT_SPM_RC_VALID_COND_LATCH | 70 MT_SPM_RC_VALID_XSOC_BBLPM), 71 .cond_block = 0U, 72 .enter_cnt = 0U, 73 .cond_res = &cond_dram_res, 74 }; 75 76 static void spm_dram_conduct(struct spm_lp_scen *spm_lp, 77 unsigned int *resource_req) 78 { 79 spm_lp->pwrctrl->pcm_flags = (uint32_t)CONSTRAINT_DRAM_PCM_FLAG; 80 spm_lp->pwrctrl->pcm_flags1 = (uint32_t)CONSTRAINT_DRAM_PCM_FLAG1; 81 *resource_req |= CONSTRAINT_DRAM_RESOURCE_REQ; 82 } 83 84 bool spm_is_valid_rc_dram(unsigned int cpu, int state_id) 85 { 86 (void)cpu; 87 (void)state_id; 88 89 return ((status.cond_block == 0U) && IS_MT_RM_RC_READY(status.valid)); 90 } 91 92 int spm_update_rc_dram(int state_id, int type, const void *val) 93 { 94 const struct mt_spm_cond_tables *tlb; 95 const struct mt_spm_cond_tables *tlb_check; 96 int res = MT_RM_STATUS_OK; 97 98 if (val == NULL) { 99 res = MT_RM_STATUS_BAD; 100 } else { 101 if (type == PLAT_RC_UPDATE_CONDITION) { 102 tlb = (const struct mt_spm_cond_tables *)val; 103 tlb_check = (const struct mt_spm_cond_tables *)&cond_dram; 104 status.cond_block = 105 mt_spm_cond_check(state_id, tlb, tlb_check, 106 ((status.valid & 107 MT_SPM_RC_VALID_COND_LATCH) != 0U) ? 108 (&cond_dram_res) : (NULL)); 109 } else { 110 res = MT_RM_STATUS_BAD; 111 } 112 } 113 114 return res; 115 } 116 117 unsigned int spm_allow_rc_dram(int state_id) 118 { 119 (void)state_id; 120 121 return CONSTRAINT_DRAM_ALLOW; 122 } 123 124 int spm_run_rc_dram(unsigned int cpu, int state_id) 125 { 126 unsigned int ext_op = MT_SPM_EX_OP_HW_S1_DETECT; 127 unsigned int allows = CONSTRAINT_DRAM_ALLOW; 128 129 (void)cpu; 130 131 if (IS_MT_SPM_RC_BBLPM_MODE(status.valid)) { 132 #ifdef MT_SPM_USING_SRCLKEN_RC 133 ext_op |= MT_SPM_EX_OP_SRCLKEN_RC_BBLPM; 134 #else 135 allows |= MT_RM_CONSTRAINT_ALLOW_BBLPM; 136 #endif 137 } 138 139 #ifndef ATF_PLAT_SPM_SSPM_NOTIFIER_UNSUPPORT 140 mt_spm_sspm_notify_u32(MT_SPM_NOTIFY_LP_ENTER, allows | (IS_PLAT_SUSPEND_ID(state_id) ? 141 (MT_RM_CONSTRAINT_ALLOW_AP_SUSPEND) : (0U))); 142 #else 143 (void)allows; 144 #endif 145 146 if (IS_PLAT_SUSPEND_ID(state_id)) { 147 mt_spm_suspend_enter(state_id, 148 (MT_SPM_EX_OP_SET_WDT | MT_SPM_EX_OP_HW_S1_DETECT), 149 CONSTRAINT_DRAM_RESOURCE_REQ); 150 } else { 151 mt_spm_idle_generic_enter(state_id, ext_op, spm_dram_conduct); 152 } 153 154 return 0; 155 } 156 157 int spm_reset_rc_dram(unsigned int cpu, int state_id) 158 { 159 unsigned int ext_op = MT_SPM_EX_OP_HW_S1_DETECT; 160 unsigned int allows = CONSTRAINT_DRAM_ALLOW; 161 162 (void)cpu; 163 164 if (IS_MT_SPM_RC_BBLPM_MODE(status.valid)) { 165 #ifdef MT_SPM_USING_SRCLKEN_RC 166 ext_op |= MT_SPM_EX_OP_SRCLKEN_RC_BBLPM; 167 #else 168 allows |= MT_RM_CONSTRAINT_ALLOW_BBLPM; 169 #endif 170 } 171 172 #ifndef ATF_PLAT_SPM_SSPM_NOTIFIER_UNSUPPORT 173 mt_spm_sspm_notify_u32(MT_SPM_NOTIFY_LP_LEAVE, allows); 174 #else 175 (void)allows; 176 #endif 177 if (IS_PLAT_SUSPEND_ID(state_id)) { 178 mt_spm_suspend_resume(state_id, 179 (MT_SPM_EX_OP_SET_WDT | MT_SPM_EX_OP_HW_S1_DETECT), 180 NULL); 181 } else { 182 mt_spm_idle_generic_resume(state_id, ext_op, NULL, NULL); 183 status.enter_cnt++; 184 } 185 186 return 0; 187 } 188