40 lines
822 B
C
40 lines
822 B
C
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/*
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* Copyright (c) 2016 Cadence Design Systems, Inc.
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <xtensa/tie/xt_core.h>
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#include <xtensa/tie/xt_interrupt.h>
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#include <logging/kernel_event_logger.h>
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/*
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* @brief Put the CPU in low-power mode
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*
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* This function always exits with interrupts unlocked.
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*
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* void k_cpu_idle(void)
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*/
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void k_cpu_idle(void)
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{
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#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
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_sys_k_event_logger_enter_sleep();
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#endif
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XT_WAITI(0);
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}
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/*
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* @brief Put the CPU in low-power mode, entered with IRQs locked
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*
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* This function exits with interrupts restored to <key>.
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*
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* void nano_cpu_atomic_idle(unsigned int key)
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*/
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void k_cpu_atomic_idle(unsigned int key)
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{
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#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
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_sys_k_event_logger_enter_sleep();
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#endif
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XT_WAITI(0);
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XT_WSR_PS(key);
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XT_RSYNC();
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}
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