mediatek: mt8192: Add SPM suspend driver
Supports dram/mainpll/26m off when system suspend
Change-Id: Id13a06d4132f00fb60066de75920ecac18306e32
diff --git a/plat/mediatek/mt8192/drivers/spm/mt_spm.c b/plat/mediatek/mt8192/drivers/spm/mt_spm.c
new file mode 100644
index 0000000..f4505b6
--- /dev/null
+++ b/plat/mediatek/mt8192/drivers/spm/mt_spm.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2020, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stddef.h>
+#include <string.h>
+#include <common/debug.h>
+#include <lib/bakery_lock.h>
+#include <lib/mmio.h>
+#include <mt_lp_rm.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_pmic_wrap.h>
+#include <mt_spm_rc_internal.h>
+#include <mt_spm_reg.h>
+#include <mt_spm_resource_req.h>
+#include <mt_spm_suspend.h>
+#include <mtk_plat_common.h>
+#include <plat_mtk_lpm.h>
+#include <plat_pm.h>
+#include <platform_def.h>
+#include <sleep_def.h>
+
+#ifdef MT_SPM_USING_BAKERY_LOCK
+DEFINE_BAKERY_LOCK(spm_lock);
+#define plat_spm_lock_init() bakery_lock_init(&spm_lock)
+#else
+spinlock_t spm_lock;
+#define plat_spm_lock_init()
+#endif
+
+/* CLK_SCP_CFG_0 */
+#define CLK_SCP_CFG_0 (TOPCKGEN_BASE + 0x200)
+#define SPM_CK_CONTROL_EN 0x3FF
+
+/* CLK_SCP_CFG_1 */
+#define CLK_SCP_CFG_1 (TOPCKGEN_BASE + 0x210)
+#define CLK_SCP_CFG_1_MASK 0x100C
+#define CLK_SCP_CFG_1_SPM 0x3
+
+struct mt_resource_constraint plat_constraint_bus26m = {
+ .is_valid = spm_is_valid_rc_bus26m,
+ .update = spm_update_rc_bus26m,
+ .allow = spm_allow_rc_bus26m,
+ .run = spm_run_rc_bus26m,
+ .reset = spm_reset_rc_bus26m,
+};
+
+struct mt_resource_constraint plat_constraint_syspll = {
+ .is_valid = spm_is_valid_rc_syspll,
+ .update = spm_update_rc_syspll,
+ .allow = spm_allow_rc_syspll,
+ .run = spm_run_rc_syspll,
+ .reset = spm_reset_rc_syspll,
+};
+
+struct mt_resource_constraint plat_constraint_dram = {
+ .is_valid = spm_is_valid_rc_dram,
+ .update = spm_update_rc_dram,
+ .allow = spm_allow_rc_dram,
+ .run = spm_run_rc_dram,
+ .reset = spm_reset_rc_dram,
+};
+
+struct mt_resource_constraint plat_constraint_cpu = {
+ .is_valid = spm_is_valid_rc_cpu_buck_ldo,
+ .update = NULL,
+ .allow = spm_allow_rc_cpu_buck_ldo,
+ .run = spm_run_rc_cpu_buck_ldo,
+ .reset = spm_reset_rc_cpu_buck_ldo,
+};
+
+struct mt_resource_constraint *plat_constraints[] = {
+ &plat_constraint_bus26m,
+ &plat_constraint_syspll,
+ &plat_constraint_dram,
+ &plat_constraint_cpu,
+ NULL,
+};
+
+struct mt_resource_manager plat_mt8192_rm = {
+ .update = mt_spm_cond_update,
+ .consts = plat_constraints,
+};
+
+void spm_boot_init(void)
+{
+ /* switch ck_off/axi_26m control to SPM */
+ mmio_setbits_32(CLK_SCP_CFG_0, SPM_CK_CONTROL_EN);
+ mmio_clrsetbits_32(CLK_SCP_CFG_1, CLK_SCP_CFG_1_MASK,
+ CLK_SCP_CFG_1_SPM);
+
+ plat_spm_lock_init();
+ mt_spm_pmic_wrap_set_phase(PMIC_WRAP_PHASE_ALLINONE);
+ mt_lp_rm_register(&plat_mt8192_rm);
+ mt_spm_idle_generic_init();
+ mt_spm_suspend_init();
+}