1 /* 2 * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #pragma once 8 #include <stdint.h> 9 #include "sdkconfig.h" 10 11 #ifdef __cplusplus 12 extern "C" { 13 #endif 14 15 /** 16 * @file sleep_retention.h 17 * 18 * This file contains declarations of memory retention related functions in light sleeo mode. 19 */ 20 21 #if SOC_PM_SUPPORT_CPU_PD 22 23 /** 24 * @brief Whether to allow the cpu power domain to be powered off. 25 * 26 * In light sleep mode, only when the system can provide enough memory 27 * for cpu retention, the cpu power domain can be powered off. 28 */ 29 bool cpu_domain_pd_allowed(void); 30 31 #endif 32 33 #if SOC_PM_SUPPORT_CPU_PD || SOC_PM_SUPPORT_TAGMEM_PD 34 35 /** 36 * @brief Enable memory retention of some modules. 37 * 38 * In light sleep mode, before the system goes to sleep, enable the memory 39 * retention of modules such as CPU and I/D-cache tag memory. 40 */ 41 void sleep_enable_memory_retention(void); 42 43 /** 44 * @brief Disable memory retention of some modules. 45 * 46 * In light sleep mode, after the system exits sleep, disable the memory 47 * retention of moudles such as CPU and I/D-cache tag memory. 48 */ 49 void sleep_disable_memory_retention(void); 50 51 #endif // SOC_PM_SUPPORT_CPU_PD || SOC_PM_SUPPORT_TAGMEM_PD 52 53 #ifdef __cplusplus 54 } 55 #endif 56
