55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
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/*
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* Copyright (c) 2022 Espressif Systems (Shanghai) Co., Ltd.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <zephyr/pm/pm.h>
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#include <esp_sleep.h>
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#include <zephyr/logging/log.h>
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LOG_MODULE_DECLARE(soc, CONFIG_SOC_LOG_LEVEL);
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static uint32_t intenable;
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/* Invoke Low Power/System Off specific Tasks */
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__weak void pm_state_set(enum pm_state state, uint8_t substate_id)
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{
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ARG_UNUSED(substate_id);
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switch (state) {
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case PM_STATE_SOFT_OFF:
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/* Forces RTC domain to be always on */
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esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
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esp_deep_sleep_start();
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break;
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case PM_STATE_STANDBY:
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intenable = XTENSA_RSR("INTENABLE");
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__asm__ volatile ("waiti 0");
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break;
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default:
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LOG_DBG("Unsupported power state %u", state);
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break;
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}
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}
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/* Handle SOC specific activity after Low Power Mode Exit */
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__weak void pm_state_exit_post_ops(enum pm_state state, uint8_t substate_id)
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{
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ARG_UNUSED(substate_id);
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switch (state) {
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case PM_STATE_SOFT_OFF:
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/* Nothing to do. */
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break;
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case PM_STATE_STANDBY:
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z_xt_ints_on(intenable);
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esp_light_sleep_start();
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break;
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default:
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LOG_DBG("Unsupported power state %u", state);
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break;
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}
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}
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