100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
/****************************************************************************
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* drivers/power/pm_initialize.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/power/pm.h>
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#include "pm.h"
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#if defined(CONFIG_PM_GOVERNOR_ACTIVITY)
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# include "activity_governor.h"
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#elif defined(CONFIG_PM_GOVERNOR_GREEDY)
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# include "greedy_governor.h"
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#endif
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#ifdef CONFIG_PM
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/* All PM global data: */
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/* Initialize the registry and the PM global data structures. The PM
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* global data structure resides in .data which is zeroed at boot time. So
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* it is only required to initialize non-zero elements of the PM global
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* data structure here.
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*/
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struct pm_global_s g_pmglobals =
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{
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.regsem = SEM_INITIALIZER(1)
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};
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: pm_initialize
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*
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* Description:
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* This function is called by MCU-specific one-time at power on reset in
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* order to initialize the power management capabilities. This function
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* must be called *very* early in the initialization sequence *before* any
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* other device drivers are initialize (since they may attempt to register
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* with the power management subsystem).
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*
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* Input Parameters:
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* None.
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*
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* Returned Value:
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* None.
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*
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****************************************************************************/
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void pm_initialize(void)
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{
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/* Select governor */
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#if defined(CONFIG_PM_GOVERNOR_ACTIVITY)
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g_pmglobals.governor = pm_activity_governor_initialize();
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#elif defined(CONFIG_PM_GOVERNOR_GREEDY)
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g_pmglobals.governor = pm_greedy_governor_initialize();
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#elif defined(CONFIG_PM_GOVERNOR_CUSTOM)
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/* TODO: call to board function to retrieve custom governor,
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* such as board_pm_governor_initialize()
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*/
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# error "Not supported yet"
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#endif
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/* Initialize selected governor */
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g_pmglobals.governor->initialize();
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}
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#endif /* CONFIG_PM */
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