ae21df2ed3
unify critical_section and nxsem with pm_lock/pm_unlock Signed-off-by: zhuyanlin <zhuyanlin1@xiaomi.com>
76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/****************************************************************************
|
|
* drivers/power/pm_lock.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 <nuttx/config.h>
|
|
|
|
#include <nuttx/arch.h>
|
|
#include <nuttx/irq.h>
|
|
#include <nuttx/power/pm.h>
|
|
#include <sched.h>
|
|
#include "pm.h"
|
|
|
|
#if defined(CONFIG_PM)
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: pm_lock
|
|
*
|
|
* Description:
|
|
* Lock the power management operation.
|
|
*
|
|
****************************************************************************/
|
|
|
|
irqstate_t pm_lock(void)
|
|
{
|
|
if (!up_interrupt_context() && !sched_idletask())
|
|
{
|
|
nxsem_wait_uninterruptible(&g_pmglobals.regsem);
|
|
}
|
|
|
|
return enter_critical_section();
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: pm_unlock
|
|
*
|
|
* Description:
|
|
* Unlock the power management operation.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void pm_unlock(irqstate_t flags)
|
|
{
|
|
leave_critical_section(flags);
|
|
|
|
if (!up_interrupt_context() && !sched_idletask())
|
|
{
|
|
nxsem_post(&g_pmglobals.regsem);
|
|
}
|
|
}
|
|
|
|
#endif /* CONFIG_PM */
|