114 lines
3.4 KiB
C
114 lines
3.4 KiB
C
/****************************************************************************
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* drivers/power/pm/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 <nuttx/semaphore.h>
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#include <nuttx/sched.h>
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#include "pm.h"
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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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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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FAR const struct pm_governor_s *gov;
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#if CONFIG_PM_GOVERNOR_EXPLICIT_RELAX
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int state;
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#endif
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int i;
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pm_wakelock_global_init();
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/* Select governor */
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for (i = 0; i < CONFIG_PM_NDOMAINS; i++)
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{
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#if defined(CONFIG_PM_GOVERNOR_GREEDY)
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gov = pm_greedy_governor_initialize();
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#elif defined(CONFIG_PM_GOVERNOR_ACTIVITY)
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gov = pm_activity_governor_initialize();
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#else
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static struct pm_governor_s null;
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gov = &null;
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#endif
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pm_set_governor(i, gov);
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nxrmutex_init(&g_pmglobals.domain[i].lock);
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#if CONFIG_PM_GOVERNOR_EXPLICIT_RELAX
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for (state = 0; state < PM_COUNT; state++)
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{
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# if CONFIG_PM_GOVERNOR_EXPLICIT_RELAX < 0
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pm_stay(i, state);
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# else
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pm_staytimeout(i, state, CONFIG_PM_GOVERNOR_EXPLICIT_RELAX);
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# endif
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}
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#endif
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}
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}
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#endif /* CONFIG_PM */
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