developer | 037c99f | 2020-06-15 16:41:03 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2020, MediaTek Inc. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <assert.h> |
| 8 | #include <stdint.h> |
| 9 | |
| 10 | #include <arch_helpers.h> |
| 11 | #include <lib/psci/psci.h> |
| 12 | #include <lib/spinlock.h> |
| 13 | |
| 14 | #include <mt_cpu_pm_cpc.h> |
| 15 | #include <mt_mcdi.h> |
| 16 | #include <plat_mtk_lpm.h> |
| 17 | #include <plat_pm.h> |
| 18 | |
| 19 | DEFINE_SYSREG_RW_FUNCS(dbgprcr_el1); |
| 20 | |
| 21 | static int plat_mt_lp_cpu_rc; |
| 22 | |
| 23 | static int pwr_state_prompt(unsigned int cpu, const psci_power_state_t *state) |
| 24 | { |
| 25 | return 0; |
| 26 | } |
| 27 | |
| 28 | static int pwr_state_reflect(unsigned int cpu, const psci_power_state_t *state) |
| 29 | { |
| 30 | mtk_cpc_core_on_hint_clr(cpu); |
| 31 | |
| 32 | if (IS_SYSTEM_SUSPEND_STATE(state)) { |
| 33 | mtk_cpc_time_sync(); |
| 34 | } |
| 35 | |
| 36 | return 0; |
| 37 | } |
| 38 | |
| 39 | static int pwr_cpu_pwron(unsigned int cpu, const psci_power_state_t *state) |
| 40 | { |
| 41 | return 0; |
| 42 | } |
| 43 | |
| 44 | static int pwr_cpu_pwrdwn(unsigned int cpu, const psci_power_state_t *state) |
| 45 | { |
| 46 | /* clear DBGPRCR.CORENPDRQ to allow CPU power down */ |
| 47 | write_dbgprcr_el1(0ULL); |
| 48 | |
| 49 | return 0; |
| 50 | } |
| 51 | |
| 52 | static int pwr_cluster_pwron(unsigned int cpu, const psci_power_state_t *state) |
| 53 | { |
| 54 | return 0; |
| 55 | } |
| 56 | |
| 57 | static int pwr_cluster_pwrdwn(unsigned int cpu, const psci_power_state_t *state) |
| 58 | { |
| 59 | return 0; |
| 60 | } |
| 61 | |
| 62 | static int pwr_mcusys_pwron(unsigned int cpu, const psci_power_state_t *state) |
| 63 | { |
| 64 | if (!IS_MCUSYS_OFF_STATE(state) || (plat_mt_lp_cpu_rc < 0)) { |
| 65 | return -1; |
| 66 | } |
| 67 | |
| 68 | mtk_cpc_mcusys_off_reflect(); |
| 69 | |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | static int pwr_mcusys_pwron_finished(unsigned int cpu, |
| 74 | const psci_power_state_t *state) |
| 75 | { |
| 76 | if (!IS_MCUSYS_OFF_STATE(state) || (plat_mt_lp_cpu_rc < 0)) { |
| 77 | return -1; |
| 78 | } |
| 79 | |
| 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | static int pwr_mcusys_pwrdwn(unsigned int cpu, const psci_power_state_t *state) |
| 84 | { |
| 85 | if (!IS_MCUSYS_OFF_STATE(state)) { |
| 86 | goto mt_pwr_mcusysoff_break; |
| 87 | } |
| 88 | |
| 89 | if (mcdi_try_init() != 0) { /* not ready to process mcusys-off */ |
| 90 | goto mt_pwr_mcusysoff_break; |
| 91 | } |
| 92 | |
| 93 | return 0; |
| 94 | |
| 95 | mt_pwr_mcusysoff_break: |
| 96 | |
| 97 | plat_mt_lp_cpu_rc = -1; |
| 98 | |
| 99 | return -1; |
| 100 | } |
| 101 | |
| 102 | static const struct mt_lpm_tz plat_pm = { |
| 103 | .pwr_prompt = pwr_state_prompt, |
| 104 | .pwr_reflect = pwr_state_reflect, |
| 105 | .pwr_cpu_on = pwr_cpu_pwron, |
| 106 | .pwr_cpu_dwn = pwr_cpu_pwrdwn, |
| 107 | .pwr_cluster_on = pwr_cluster_pwron, |
| 108 | .pwr_cluster_dwn = pwr_cluster_pwrdwn, |
| 109 | .pwr_mcusys_dwn = pwr_mcusys_pwrdwn, |
| 110 | .pwr_mcusys_on = pwr_mcusys_pwron, |
| 111 | .pwr_mcusys_on_finished = pwr_mcusys_pwron_finished |
| 112 | }; |
| 113 | |
| 114 | const struct mt_lpm_tz *mt_plat_cpu_pm_init(void) |
| 115 | { |
| 116 | mtk_cpc_init(); |
| 117 | |
| 118 | if (mcdi_try_init() == 0) { |
| 119 | INFO("MCDI init done.\n"); |
| 120 | } |
| 121 | |
| 122 | return &plat_pm; |
| 123 | } |