developer | 6514957 | 2022-09-07 18:26:57 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2023, MediaTek Inc. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <assert.h> |
| 8 | #include <stddef.h> |
| 9 | #include <stdio.h> |
| 10 | #include <string.h> |
| 11 | |
| 12 | #include <common/debug.h> |
| 13 | #include <lib/mmio.h> |
| 14 | #include <plat/common/platform.h> |
| 15 | #include <lib/pm/mtk_pm.h> |
| 16 | #include <lpm/mt_lp_rqm.h> |
| 17 | #include "mt_spm.h" |
| 18 | #include "mt_spm_conservation.h" |
| 19 | #include "mt_spm_reg.h" |
| 20 | #include <platform_def.h> |
| 21 | |
| 22 | #define INFRA_EMI_DCM_CFG0 U(0x10002028) |
| 23 | |
| 24 | static struct wake_status spm_wakesta; /* record last wakesta */ |
| 25 | static wake_reason_t spm_wake_reason = WR_NONE; |
| 26 | static unsigned int emi_bak; |
| 27 | |
| 28 | static int go_to_spm_before_wfi(int state_id, unsigned int ext_opand, |
| 29 | struct spm_lp_scen *spm_lp, |
| 30 | unsigned int resource_req) |
| 31 | { |
| 32 | int ret = 0; |
| 33 | struct pwr_ctrl *pwrctrl; |
| 34 | unsigned int cpu = plat_my_core_pos(); |
| 35 | |
| 36 | pwrctrl = spm_lp->pwrctrl; |
| 37 | |
| 38 | /* EMI workaround */ |
| 39 | emi_bak = mmio_read_32(INFRA_EMI_DCM_CFG0) & BIT(22); |
| 40 | mmio_setbits_32(INFRA_EMI_DCM_CFG0, BIT(22)); |
| 41 | |
| 42 | __spm_set_cpu_status(cpu); |
| 43 | __spm_set_power_control(pwrctrl); |
| 44 | __spm_set_wakeup_event(pwrctrl); |
| 45 | |
| 46 | __spm_set_pcm_flags(pwrctrl); |
| 47 | |
| 48 | __spm_src_req_update(pwrctrl, resource_req); |
| 49 | |
| 50 | if ((ext_opand & MT_SPM_EX_OP_CLR_26M_RECORD) != 0U) { |
| 51 | __spm_clean_before_wfi(); |
| 52 | } |
| 53 | |
| 54 | if ((ext_opand & MT_SPM_EX_OP_SET_WDT) != 0U) { |
| 55 | __spm_set_pcm_wdt(1); |
| 56 | } |
| 57 | |
| 58 | if ((ext_opand & MT_SPM_EX_OP_HW_S1_DETECT) != 0U) { |
| 59 | spm_hw_s1_state_monitor_resume(); |
| 60 | } |
| 61 | |
| 62 | __spm_send_cpu_wakeup_event(); |
| 63 | |
developer | 68ff2df | 2023-05-03 19:11:29 +0800 | [diff] [blame] | 64 | INFO("cpu%d: wakesrc = 0x%x, settle = 0x%x, sec = %u\n", |
| 65 | cpu, pwrctrl->wake_src, mmio_read_32(SPM_CLK_SETTLE), |
| 66 | (mmio_read_32(PCM_TIMER_VAL) / 32768)); |
| 67 | INFO("sw_flag = 0x%x 0x%x, req = 0x%x, pwr = 0x%x 0x%x\n", |
| 68 | pwrctrl->pcm_flags, pwrctrl->pcm_flags1, |
| 69 | mmio_read_32(SPM_SRC_REQ), mmio_read_32(PWR_STATUS), |
| 70 | mmio_read_32(PWR_STATUS_2ND)); |
| 71 | |
developer | 6514957 | 2022-09-07 18:26:57 +0800 | [diff] [blame] | 72 | return ret; |
| 73 | } |
| 74 | |
| 75 | static void go_to_spm_after_wfi(int state_id, unsigned int ext_opand, |
| 76 | struct spm_lp_scen *spm_lp, |
| 77 | struct wake_status **status) |
| 78 | { |
| 79 | unsigned int ext_status = 0U; |
| 80 | |
| 81 | if ((ext_opand & MT_SPM_EX_OP_SET_WDT) != 0U) { |
| 82 | __spm_set_pcm_wdt(0); |
| 83 | } |
| 84 | |
| 85 | if ((ext_opand & MT_SPM_EX_OP_HW_S1_DETECT) != 0U) { |
| 86 | spm_hw_s1_state_monitor_pause(&ext_status); |
| 87 | } |
| 88 | |
| 89 | __spm_ext_int_wakeup_req_clr(); |
| 90 | |
| 91 | __spm_get_wakeup_status(&spm_wakesta, ext_status); |
| 92 | |
| 93 | if (status != NULL) { |
| 94 | *status = &spm_wakesta; |
| 95 | } |
| 96 | |
| 97 | __spm_clean_after_wakeup(); |
| 98 | spm_wake_reason = __spm_output_wake_reason(&spm_wakesta); |
| 99 | |
| 100 | /* EMI workaround */ |
| 101 | if (emi_bak == 0U) { |
| 102 | mmio_clrbits_32(INFRA_EMI_DCM_CFG0, BIT(22)); |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | int spm_conservation(int state_id, unsigned int ext_opand, |
| 107 | struct spm_lp_scen *spm_lp, |
| 108 | unsigned int resource_req) |
| 109 | { |
| 110 | unsigned int rc_state = resource_req; |
| 111 | |
| 112 | if (spm_lp == NULL) { |
| 113 | return -1; |
| 114 | } |
| 115 | |
| 116 | spin_lock(&spm_lock); |
| 117 | go_to_spm_before_wfi(state_id, ext_opand, spm_lp, rc_state); |
| 118 | spin_unlock(&spm_lock); |
| 119 | |
| 120 | return 0; |
| 121 | } |
| 122 | |
| 123 | void spm_conservation_finish(int state_id, unsigned int ext_opand, struct spm_lp_scen *spm_lp, |
| 124 | struct wake_status **status) |
| 125 | { |
| 126 | spin_lock(&spm_lock); |
| 127 | go_to_spm_after_wfi(state_id, ext_opand, spm_lp, status); |
| 128 | spin_unlock(&spm_lock); |
| 129 | } |
| 130 | |
| 131 | int spm_conservation_get_result(struct wake_status **res) |
| 132 | { |
| 133 | if (res == NULL) { |
| 134 | return -1; |
| 135 | } |
| 136 | *res = &spm_wakesta; |
| 137 | return 0; |
| 138 | } |