/**************************************************************************** * drivers/power/pm/pm_initialize.c * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include "pm.h" #ifdef CONFIG_PM /**************************************************************************** * Public Data ****************************************************************************/ /* All PM global data: */ /* Initialize the registry and the PM global data structures. The PM * global data structure resides in .data which is zeroed at boot time. So * it is only required to initialize non-zero elements of the PM global * data structure here. */ struct pm_global_s g_pmglobals = { NXRMUTEX_INITIALIZER }; /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: pm_initialize * * Description: * This function is called by MCU-specific one-time at power on reset in * order to initialize the power management capabilities. This function * must be called *very* early in the initialization sequence *before* any * other device drivers are initialize (since they may attempt to register * with the power management subsystem). * * Input Parameters: * None. * * Returned Value: * None. * ****************************************************************************/ void pm_initialize(void) { FAR const struct pm_governor_s *gov; #if CONFIG_PM_GOVERNOR_EXPLICIT_RELAX int state; #endif int i; pm_wakelock_global_init(); /* Select governor */ for (i = 0; i < CONFIG_PM_NDOMAINS; i++) { #if defined(CONFIG_PM_GOVERNOR_GREEDY) gov = pm_greedy_governor_initialize(); #elif defined(CONFIG_PM_GOVERNOR_ACTIVITY) gov = pm_activity_governor_initialize(); #else static struct pm_governor_s null; gov = &null; #endif pm_set_governor(i, gov); #if defined(CONFIG_PM_PROCFS) clock_systime_timespec(&g_pmglobals.domain[i].start); #endif nxrmutex_init(&g_pmglobals.domain[i].lock); #if CONFIG_PM_GOVERNOR_EXPLICIT_RELAX for (state = 0; state < PM_COUNT; state++) { # if CONFIG_PM_GOVERNOR_EXPLICIT_RELAX < 0 pm_stay(i, state); # else pm_staytimeout(i, state, CONFIG_PM_GOVERNOR_EXPLICIT_RELAX); # endif } #endif } } #endif /* CONFIG_PM */