/**
*
* @brief Power management policy when kernel stops idling
*
* This routine is invoked when the kernel leaves the idle state.
* Routine can be modified to wake up other devices.
* The routine is invoked from interrupt thread, with interrupts disabled.
*
* @return N/A
*/
void _sys_power_save_idle_exit(int32_t ticks)
{
#if (defined(CONFIG_SYS_POWER_LOW_POWER_STATE) || \
defined(CONFIG_SYS_POWER_DEEP_SLEEP) || \
defined(CONFIG_DEVICE_POWER_MANAGEMENT))
/* Any idle wait based on CPU low power state will be exited by
* interrupt. This function is called within that interrupt's
* ISR context. _sys_soc_resume() needs to be called here
* to handle exit from CPU low power states. This gives an
* opportunity for device states altered in _sys_soc_suspend()
* to be restored before the kernel schedules another thread.
* _sys_soc_resume() is not called from here for deep sleep
* exit. Deep sleep recovery happens at cold boot path.
*/
_sys_soc_resume();
#endif
#ifdef CONFIG_TICKLESS_IDLE
if ((ticks == TICKS_UNLIMITED) || ticks >= _sys_idle_threshold_ticks) {
/* Resume normal periodic system timer interrupts */
_timer_idle_exit();
}
#else
ARG_UNUSED(ticks);
#endif /* CONFIG_TICKLESS_IDLE */
}
void _sys_power_save_idle_exit(int32_t ticks)
{
#if defined(CONFIG_SYS_POWER_LOW_POWER_STATE)
/* Some CPU low power states require notification at the ISR
* to allow any operations that needs to be done before kernel
* switches task or processes nested interrupts. This can be
* disabled by calling _sys_soc_pm_idle_exit_notification_disable().
* Alternatively it can be simply ignored if not required.
*/
if (_sys_pm_idle_exit_notify) {
_sys_soc_resume();
}
#endif
#ifdef CONFIG_TICKLESS_IDLE
if ((ticks == K_FOREVER) || ticks >= _sys_idle_threshold_ticks) {
/* Resume normal periodic system timer interrupts */
_timer_idle_exit();
}
#else
ARG_UNUSED(ticks);
#endif /* CONFIG_TICKLESS_IDLE */
}