blob: 1f81f02642869e5631b667e68910fb0e652bff91 [file] [log] [blame]
/*
* Copyright (c) 2018 Intel Corporation.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr.h>
#include <string.h>
#include <device.h>
#include <sys/atomic.h>
#include "policy/pm_policy.h"
#define LOG_LEVEL CONFIG_SYS_PM_LOG_LEVEL /* From power module Kconfig */
#include <logging/log.h>
LOG_MODULE_DECLARE(power);
static atomic_t power_state_disable_count[SYS_POWER_STATE_MAX];
void sys_pm_ctrl_disable_state(enum power_states state)
{
atomic_val_t v;
__ASSERT(state < SYS_POWER_STATE_MAX, "Invalid power state!");
v = atomic_inc(&power_state_disable_count[state]);
__ASSERT(v < UINT_MAX, "Power state disable count overflowed!");
/* Make compiler happy when assertions are disabled. */
(void)(v);
}
void sys_pm_ctrl_enable_state(enum power_states state)
{
atomic_val_t v;
__ASSERT(state < SYS_POWER_STATE_MAX, "Invalid power state!");
v = atomic_dec(&power_state_disable_count[state]);
__ASSERT(v > 0, "Power state disable count underflowed!");
/* Make compiler happy when assertions are disabled. */
(void)(v);
}
bool sys_pm_ctrl_is_state_enabled(enum power_states state)
{
__ASSERT(state < SYS_POWER_STATE_MAX, "Invalid power state!");
return (atomic_get(&power_state_disable_count[state]) == 0);
}