5fa0189cee
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4321 42af7a65-404d-4744-a932-0658087f49c3
112 lines
4.3 KiB
C
112 lines
4.3 KiB
C
/****************************************************************************
|
|
* drivers/power/pm_initialize.c
|
|
*
|
|
* Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <semaphore.h>
|
|
|
|
#include <nuttx/power/pm.h>
|
|
|
|
#include "pm_internal.h"
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Types
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Function Prototypes
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
/* All PM global data: */
|
|
|
|
struct pm_global_s g_pmglobals;
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* 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 intialization 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)
|
|
{
|
|
/* Initialize the registry and the PM global data structures. The PM
|
|
* global data structure resides in .bss which is zeroed at boot time. So
|
|
* it is only required to initialize non-zero elements of the PM global
|
|
* data structure here.
|
|
*/
|
|
|
|
sq_init(&g_pmglobals.registry);
|
|
sem_init(&g_pmglobals.regsem, 0, 1);
|
|
}
|
|
|
|
#endif /* CONFIG_PM */ |