mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-09-01 15:22:26 +00:00
a9c772cbb6
Updating global variable's name to follow a consistent naming convention.
Change accomplished with the following script:
#!/bin/bash
echo "Searching for ${1} to replace with ${2}"
find ./ \( -name "*.[chs]" -o -name "sysgen.py" -o -name "*.kconf" \) \
! -path "./host/src/genIdt/*" \
! -path "*/outdir/*" | xargs sed -i 's/\b'${1}'\b/'${2}'/g';
Change-Id: I4b7f7806fcfcbeed1abbc2421c3fc470af87eb7d
Signed-off-by: Yonattan Louise <yonattan.a.louise.mendoza@intel.com>
139 lines
4.3 KiB
C
139 lines
4.3 KiB
C
/* power.c - power management */
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/*
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* Copyright (c) 2011-2015 Wind River Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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DESCRIPTION
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This module provides _sys_power_save_flag and _SysPowerSaveIdle(),
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invoked within the microkernel idle loop.
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\INTERNAL
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*/
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#if defined(CONFIG_MICROKERNEL)
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#include <toolchain.h>
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#include <sections.h>
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unsigned char _sys_power_save_flag = 1;
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#if defined(CONFIG_ADVANCED_POWER_MANAGEMENT)
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#include <cputype.h>
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#include <nanokernel.h>
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#include <nanokernel/cpu.h>
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#include <microkernel/k_types.h>
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#ifdef CONFIG_ADVANCED_IDLE
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#include <advidle.h>
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#endif
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#if defined(CONFIG_TICKLESS_IDLE)
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#include <drivers/system_timer.h>
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#endif
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extern void nano_cpu_idle(void);
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extern void nano_cpu_set_idle(int32_t ticks);
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#if defined(CONFIG_TICKLESS_IDLE)
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/*
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* Idle time must be this value or higher for timer to go into tickless idle
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* state.
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*/
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int32_t _sys_idle_threshold_ticks =
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CONFIG_TICKLESS_IDLE_THRESH;
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#endif /* CONFIG_TICKLESS_IDLE */
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/*******************************************************************************
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*
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* _SysPowerSaveIdle - power management policy when kernel is idle
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*
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* This routine implements the power management policy based on the time
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* until the timer expires, in system ticks.
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* Routine is invoked from the idle task with interrupts disabled
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*
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* RETURNS: N/A
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*
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* \NOMANUAL
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*/
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void _SysPowerSaveIdle(int32_t ticks)
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{
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#if defined(CONFIG_TICKLESS_IDLE)
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if ((ticks == -1) || ticks >= _sys_idle_threshold_ticks) {
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/* Put the system timer into idle state until the next timer
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* event */
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_timer_idle_enter(ticks);
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}
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#endif /* CONFIG_TICKLESS_IDLE */
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#ifdef CONFIG_ADVANCED_IDLE
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/*
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* Call the advanced sleep function, which checks if the system should
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* enter a deep sleep state. If so, the function will return a non-zero
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* value when the system resumes here after the deep sleep ends.
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* If the time to sleep is too short to go to advanced sleep mode, the
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* function returns zero immediately and we do normal idle processing.
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*/
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if (_AdvIdleFunc(ticks) == 0) {
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nano_cpu_set_idle(ticks);
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nano_cpu_idle();
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}
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#else
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nano_cpu_set_idle(ticks);
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nano_cpu_idle();
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#endif /* CONFIG_ADVANCED_IDLE */
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}
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/*******************************************************************************
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*
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* _SysPowerSaveIdleExit - power management policy when kernel leaves idle state
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*
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* This routine implements the power management policy when kernel leaves idle
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* state. Routine can be modified to wake up other devices.
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* The routine is invoked from interrupt context, with interrupts disabled.
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*
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* RETURNS: N/A
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*
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* \NOMANUAL
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*/
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void _SysPowerSaveIdleExit(int32_t ticks)
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{
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#ifdef CONFIG_TICKLESS_IDLE
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if ((ticks == -1) || ticks >= _sys_idle_threshold_ticks) {
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_timer_idle_exit();
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}
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#else
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ARG_UNUSED(ticks);
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#endif /* CONFIG_TICKLESS_IDLE */
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}
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#endif /* CONFIG_ADVANCED_POWER_MANAGEMENT */
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#endif /* CONFIG_MICROKERNEL */
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