07f0e0c166
only when first time change state can hold WFI for enough time thresh, allow second time goto target state, suitable for the case when wakeup from sleep too slow, etc. Signed-off-by: buxiasen <buxiasen@xiaomi.com>
120 lines
3.6 KiB
C
120 lines
3.6 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/mutex.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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NXRMUTEX_INITIALIZER
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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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#elif defined(CONFIG_PM_GOVERNOR_STABILITY)
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gov = pm_stability_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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#if defined(CONFIG_PM_PROCFS)
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clock_systime_timespec(&g_pmglobals.domain[i].start);
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#endif
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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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