1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <stdint.h>
18#include <sys/types.h>
19
20#include <cutils/log.h>
21#include <utils/Errors.h>
22
23#include "PowerHAL.h"
24
25namespace android {
26// ---------------------------------------------------------------------------
27
28PowerHAL::PowerHAL() : mPowerModule(0), mVSyncHintEnabled(false) {
29    int err = hw_get_module(POWER_HARDWARE_MODULE_ID,
30            (const hw_module_t **)&mPowerModule);
31    ALOGW_IF(err, "%s module not found", POWER_HARDWARE_MODULE_ID);
32}
33
34PowerHAL::~PowerHAL() {
35}
36
37status_t PowerHAL::initCheck() const {
38    return mPowerModule ? NO_ERROR : NO_INIT;
39}
40
41status_t PowerHAL::vsyncHint(bool enabled) {
42    if (!mPowerModule) {
43        return NO_INIT;
44    }
45    if (mPowerModule->common.module_api_version >= POWER_MODULE_API_VERSION_0_2) {
46        if (mPowerModule->powerHint) {
47            if (mVSyncHintEnabled != bool(enabled)) {
48                mPowerModule->powerHint(mPowerModule,
49                        POWER_HINT_VSYNC, (void*)enabled);
50                mVSyncHintEnabled = bool(enabled);
51            }
52        }
53    }
54    return NO_ERROR;
55}
56
57// ---------------------------------------------------------------------------
58}; // namespace android
59
60