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feat(esp_hw_support): implement software CPU retention synchronization for SMP sleep modes

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wuzhenghui
2026-06-18 09:41:41 +08:00
parent d4e3109c1b
commit 0c7caf79b5
5 changed files with 92 additions and 86 deletions
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components/esp_hw_support/include/esp_private/sleep_cpu.h
+18 -5
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -69,14 +69,27 @@ esp_err_t esp_sleep_cpu_retention(uint32_t (*goto_sleep)(uint32_t, uint32_t, uin
#if !CONFIG_FREERTOS_UNICORE && CONFIG_PM_ESP_SLEEP_POWER_DOWN_CPU
/**
* Do sleep prepare for other smp cores
* Start the software CPU retention synchronization.
*
* This waits until the other CPU retention state to IDLE before
* the caller starts the software CPU retention.
*/
void sleep_smp_cpu_sleep_prepare(void);
void sleep_cpu_retention_start(void);
/**
* Do wakeup prepare for other smp cores
* Run the software CPU retention flow on the stalled other CPU.
*
* @param arg Unused
*/
void sleep_smp_cpu_wakeup_prepare(void);
void sleep_cpu_retention_execute(void* arg);
/**
* Finish the software CPU retention synchronization.
*
* This is called by the initiating CPU after wakeup or sleep rejection to
* synchronize with the other CPU retention state and return its own state to idle.
*/
void sleep_cpu_retention_finish(void);
/**
* Notify the other core that this sleep does not require retention.