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/* Copyright 2021 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <pm/pm.h>
#include <pm/policy.h>
#include <soc.h>
#include <zephyr.h>
#include "system.h"
static const struct pm_state_info pm_states[] =
PM_STATE_INFO_LIST_FROM_DT_CPU(DT_NODELABEL(cpu0));
/* CROS PM policy handler */
struct pm_state_info pm_policy_next_state(uint8_t cpu, int32_t ticks)
{
ARG_UNUSED(cpu);
/* Deep sleep is allowed */
if (DEEP_SLEEP_ALLOWED) {
/*
* If there are multiple power states, iterating backward
* is needed to take priority into account.
*/
for (int i = 0; i < ARRAY_SIZE(pm_states); i++) {
/*
* To check if given power state is enabled and
* could be used.
*/
if (!pm_constraint_get(pm_states[i].state)) {
continue;
}
return pm_states[i];
}
}
return (struct pm_state_info){PM_STATE_ACTIVE, 0, 0};
}
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