feat(mt8188): add SPM feature support
Add SPM low power functions, such as system suspend.
Change-Id: I6d1ad847a81ba9c347ab6fb8a8cb8c69004b7add
diff --git a/plat/mediatek/drivers/spm/mt8188/constraints/mt_spm_rc_cpu_buck_ldo.c b/plat/mediatek/drivers/spm/mt8188/constraints/mt_spm_rc_cpu_buck_ldo.c
new file mode 100644
index 0000000..1bcd509
--- /dev/null
+++ b/plat/mediatek/drivers/spm/mt8188/constraints/mt_spm_rc_cpu_buck_ldo.c
@@ -0,0 +1,191 @@
+/*
+ * Copyright (c) 2023, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/debug.h>
+#include <drivers/spm/mt_spm_resource_req.h>
+#include <lib/pm/mtk_pm.h>
+#include <lpm/mt_lpm_smc.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_api.h"
+#include "mt_spm_rc_internal.h"
+#include <mt_spm_reg.h>
+#include <mt_spm_suspend.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_DISABLE_DRAMC_MCU_SRAM_SLEEP | \
+ SPM_FLAG_KEEP_CSYSPWRACK_HIGH)
+
+#define CONSTRAINT_CPU_BUCK_PCM_FLAG1 (0)
+
+#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 | MT_SPM_RC_VALID_TRACE_TIME);
+static unsigned int cpubuckldo_enter_cnt;
+
+int spm_cpu_bcuk_ldo_conduct(int state_id,
+ struct spm_lp_scen *spm_lp,
+ unsigned int *resource_req)
+{
+ unsigned int res_req = CONSTRAINT_CPU_BUCK_RESOURCE_REQ;
+
+ if ((spm_lp == NULL) || (resource_req == NULL)) {
+ return -1;
+ }
+
+ 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 |= res_req;
+ return 0;
+}
+
+bool spm_is_valid_rc_cpu_buck_ldo(unsigned int cpu, int state_id)
+{
+ return IS_MT_RM_RC_READY(cpubuckldo_status);
+}
+
+static void update_rc_status(const void *val)
+{
+ const struct rc_common_state *st = (const struct rc_common_state *)val;
+
+ if (st == NULL) {
+ return;
+ }
+
+ if ((st->type == CONSTRAINT_UPDATE_VALID) && st->value) {
+ if ((st->id == MT_RM_CONSTRAINT_ID_ALL) ||
+ (st->id == MT_RM_CONSTRAINT_ID_CPU_BUCK_LDO)) {
+ struct constraint_status *con = (struct constraint_status *)st->value;
+
+ if ((st->act & MT_LPM_SMC_ACT_CLR) > 0U) {
+ SPM_RC_BITS_CLR(cpubuckldo_status, con->is_valid);
+ } else {
+ SPM_RC_BITS_SET(cpubuckldo_status, con->is_valid);
+ }
+ }
+ }
+}
+
+int spm_update_rc_cpu_buck_ldo(int state_id, int type, const void *val)
+{
+ if (type == PLAT_RC_STATUS) {
+ update_rc_status(val);
+ }
+ return MT_RM_STATUS_OK;
+}
+
+unsigned int spm_allow_rc_cpu_buck_ldo(int 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 MTK_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 (cpubuckldo_status & MT_SPM_RC_VALID_TRACE_TIME) {
+ ext_op |= MT_SPM_EX_OP_TRACE_TIMESTAMP_EN;
+ }
+
+ if (IS_PLAT_SUSPEND_ID(state_id)) {
+ mt_spm_suspend_enter(state_id,
+ (MT_SPM_EX_OP_CLR_26M_RECORD |
+ MT_SPM_EX_OP_SET_SUSPEND_MODE |
+ 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 MTK_PLAT_SPM_SSPM_NOTIFIER_UNSUPPORT
+ mt_spm_sspm_notify_u32(MT_SPM_NOTIFY_LP_LEAVE, 0U);
+#endif
+ if (cpubuckldo_status & MT_SPM_RC_VALID_TRACE_TIME) {
+ ext_op |= MT_SPM_EX_OP_TRACE_TIMESTAMP_EN;
+ }
+
+ 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;
+}
+
+int spm_get_status_rc_cpu_buck_ldo(unsigned int type, void *priv)
+{
+ int ret = MT_RM_STATUS_OK;
+
+ if (type != PLAT_RC_STATUS) {
+ return ret;
+ }
+
+ struct rc_common_state *st = (struct rc_common_state *)priv;
+
+ if (st == NULL) {
+ return MT_RM_STATUS_BAD;
+ }
+
+ if ((st->id == MT_RM_CONSTRAINT_ID_ALL) ||
+ (st->id == MT_RM_CONSTRAINT_ID_CPU_BUCK_LDO)) {
+ struct constraint_status *dest;
+
+ dest = (struct constraint_status *)st->value;
+ do {
+ if (dest == NULL) {
+ break;
+ }
+ if (st->type == CONSTRAINT_GET_VALID) {
+ dest->is_valid = cpubuckldo_status;
+ } else if (st->type == CONSTRAINT_COND_BLOCK) {
+ dest->is_cond_block = 0;
+ } else if (st->type == CONSTRAINT_GET_ENTER_CNT) {
+ if (st->id == MT_RM_CONSTRAINT_ID_ALL) {
+ dest->enter_cnt += cpubuckldo_enter_cnt;
+ } else {
+ dest->enter_cnt = cpubuckldo_enter_cnt;
+ }
+ } else {
+ break;
+ }
+ if (st->id != MT_RM_CONSTRAINT_ID_ALL) {
+ ret = MT_RM_STATUS_STOP;
+ }
+ } while (0);
+ }
+ return ret;
+}