power_module.cpp revision 61a2c6a19dbd06a317a419623020e02056661876 
1/*-------------------------------------------------------------------------
2Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
3
4  Redistribution and use in source and binary forms, with or without
5  modification, are permitted provided that the following conditions
6  are met:
7
8    * Redistributions of source code must retain the above copyright
9  notice, this list of conditions and the following disclaimer.
10    * Redistributions in binary form must reproduce the above
11  copyright notice, this list of conditions and the following
12      disclaimer in the documentation and/or other materials provided
13      with the distribution.
14    * Neither the name of The Linux Foundation nor the names of its
15      contributors may be used to endorse or promote products derived
16      from this software without specific prior written permission.
17
18THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
19WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
20MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
21ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
22BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
25BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
27OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
28IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29--------------------------------------------------------------------------*/
30
31#include "power_module.h"
32
33PowerModule *PowerModule::mPowerModuleInstance = NULL;
34
35PowerModule *PowerModule::getInstance()
36{
37    if (mPowerModuleInstance == NULL) {
38        mPowerModuleInstance = new PowerModule;
39
40        if (mPowerModuleInstance) {
41            mPowerModuleInstance->mPowerModuleHandle = NULL;
42
43            hw_get_module(POWER_HARDWARE_MODULE_ID,
44                    (const hw_module_t **)&(mPowerModuleInstance->mPowerModuleHandle));
45        }
46    }
47
48    return mPowerModuleInstance;
49}
50
51power_module_t *PowerModule::getPowerModuleHandle()
52{
53    return mPowerModuleHandle;
54}
55