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/* Copyright 2021 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "console.h"
#include "cros_version.h"
#include "system.h"
#include <zephyr/kernel.h>
#include <zephyr/pm/pm.h>
#include <zephyr/pm/policy.h>
#include <soc.h>
static const struct pm_state_info residency_info[] =
PM_STATE_INFO_LIST_FROM_DT_CPU(DT_NODELABEL(cpu0));
/* CROS PM policy handler */
const struct pm_state_info *pm_policy_next_state(uint8_t cpu, int32_t ticks)
{
ARG_UNUSED(cpu);
if (DEEP_SLEEP_ALLOWED) {
for (int i = ARRAY_SIZE(residency_info) - 1; i >= 0; i--) {
if (pm_policy_state_lock_is_active(
residency_info[i].state,
PM_ALL_SUBSTATES)) {
continue;
}
/* Find suitable power state by residency time */
if (ticks == K_TICKS_FOREVER ||
ticks >= k_us_to_ticks_ceil32(
residency_info[i]
.min_residency_us)) {
return &residency_info[i];
}
}
}
return NULL;
}
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