118 lines
2.7 KiB
C
118 lines
2.7 KiB
C
/*
|
|
* Copyright (c) 2021 Fabio Baltieri
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
#include <zephyr.h>
|
|
#include <pm/pm.h>
|
|
#include <soc.h>
|
|
#include <init.h>
|
|
|
|
#include <stm32wlxx_ll_utils.h>
|
|
#include <stm32wlxx_ll_bus.h>
|
|
#include <stm32wlxx_ll_cortex.h>
|
|
#include <stm32wlxx_ll_pwr.h>
|
|
#include <stm32wlxx_ll_rcc.h>
|
|
#include <stm32wlxx_ll_system.h>
|
|
#include <clock_control/clock_stm32_ll_common.h>
|
|
#include <drivers/clock_control/stm32_clock_control.h>
|
|
|
|
#include <logging/log.h>
|
|
LOG_MODULE_DECLARE(soc, CONFIG_SOC_LOG_LEVEL);
|
|
|
|
/* select MSI as wake-up system clock if configured, HSI otherwise */
|
|
#if STM32_SYSCLK_SRC_MSI
|
|
#define RCC_STOP_WAKEUPCLOCK_SELECTED LL_RCC_STOP_WAKEUPCLOCK_MSI
|
|
#else
|
|
#define RCC_STOP_WAKEUPCLOCK_SELECTED LL_RCC_STOP_WAKEUPCLOCK_HSI
|
|
#endif
|
|
|
|
/* Invoke Low Power/System Off specific Tasks */
|
|
__weak void pm_power_state_set(enum pm_state state, uint8_t substate_id)
|
|
{
|
|
switch (state) {
|
|
case PM_STATE_SUSPEND_TO_IDLE:
|
|
LL_RCC_SetClkAfterWakeFromStop(RCC_STOP_WAKEUPCLOCK_SELECTED);
|
|
LL_PWR_ClearFlag_WU();
|
|
switch (substate_id) {
|
|
case 1:
|
|
LL_PWR_SetPowerMode(LL_PWR_MODE_STOP0);
|
|
break;
|
|
case 2:
|
|
LL_PWR_SetPowerMode(LL_PWR_MODE_STOP1);
|
|
break;
|
|
case 3:
|
|
LL_PWR_SetPowerMode(LL_PWR_MODE_STOP2);
|
|
break;
|
|
default:
|
|
LOG_DBG("Unsupported power substate-id %u", substate_id);
|
|
return;
|
|
}
|
|
LL_LPM_EnableDeepSleep();
|
|
k_cpu_idle();
|
|
break;
|
|
case PM_STATE_SOFT_OFF:
|
|
LL_PWR_ClearFlag_WU();
|
|
switch (substate_id) {
|
|
case 0:
|
|
LL_PWR_SetPowerMode(LL_PWR_MODE_STANDBY);
|
|
break;
|
|
case 1:
|
|
LL_PWR_SetPowerMode(LL_PWR_MODE_SHUTDOWN);
|
|
break;
|
|
default:
|
|
LOG_DBG("Unsupported power substate-id %u", substate_id);
|
|
return;
|
|
}
|
|
LL_LPM_EnableDeepSleep();
|
|
k_cpu_idle();
|
|
break;
|
|
default:
|
|
LOG_DBG("Unsupported power state %u", state);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Handle SOC specific activity after Low Power Mode Exit */
|
|
__weak void pm_power_state_exit_post_ops(enum pm_state state, uint8_t substate_id)
|
|
{
|
|
ARG_UNUSED(substate_id);
|
|
|
|
switch (state) {
|
|
case PM_STATE_SUSPEND_TO_IDLE:
|
|
LL_LPM_DisableSleepOnExit();
|
|
LL_LPM_EnableSleep();
|
|
/* need to restore the clock */
|
|
stm32_clock_control_init(NULL);
|
|
break;
|
|
case PM_STATE_SOFT_OFF:
|
|
/* Nothing to do. */
|
|
break;
|
|
default:
|
|
LOG_DBG("Unsupported power substate-id %u", state);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* System is now in active mode.
|
|
* Reenable interrupts which were disabled
|
|
* when OS started idling code.
|
|
*/
|
|
irq_unlock(0);
|
|
}
|
|
|
|
/* Initialize STM32 Power */
|
|
static int stm32_power_init(const struct device *dev)
|
|
{
|
|
ARG_UNUSED(dev);
|
|
|
|
#ifdef CONFIG_DEBUG
|
|
/* Enable the Debug Module during STOP mode */
|
|
LL_DBGMCU_EnableDBGStopMode();
|
|
#endif /* CONFIG_DEBUG */
|
|
|
|
return 0;
|
|
}
|
|
|
|
SYS_INIT(stm32_power_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
|