summaryrefslogtreecommitdiff
path: root/libsuspend/autosuspend.c
blob: edd100711c7813a472666443ebda8d906ced6289 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed 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.
 */

#include <stdbool.h>

#define LOG_TAG "libsuspend"
#include <cutils/log.h>

#include <suspend/autosuspend.h>

#include "autosuspend_ops.h"

static struct autosuspend_ops *autosuspend_ops;
static bool autosuspend_enabled;
static bool autosuspend_inited;

static int autosuspend_init(void)
{
    if (autosuspend_inited) {
        return 0;
    }

    autosuspend_ops = autosuspend_earlysuspend_init();
    if (autosuspend_ops) {
        goto out;
    }

/* Remove autosleep so userspace can manager suspend/resume and keep stats */
#if 0
    autosuspend_ops = autosuspend_autosleep_init();
    if (autosuspend_ops) {
        goto out;
    }
#endif

    autosuspend_ops = autosuspend_wakeup_count_init();
    if (autosuspend_ops) {
        goto out;
    }

    if (!autosuspend_ops) {
        ALOGE("failed to initialize autosuspend\n");
        return -1;
    }

out:
    autosuspend_inited = true;

    ALOGV("autosuspend initialized\n");
    return 0;
}

int autosuspend_enable(void)
{
    int ret;

    ret = autosuspend_init();
    if (ret) {
        return ret;
    }

    ALOGV("autosuspend_enable\n");

    if (autosuspend_enabled) {
        return 0;
    }

    ret = autosuspend_ops->enable();
    if (ret) {
        return ret;
    }

    autosuspend_enabled = true;
    return 0;
}

int autosuspend_disable(void)
{
    int ret;

    ret = autosuspend_init();
    if (ret) {
        return ret;
    }

    ALOGV("autosuspend_disable\n");

    if (!autosuspend_enabled) {
        return 0;
    }

    ret = autosuspend_ops->disable();
    if (ret) {
        return ret;
    }

    autosuspend_enabled = false;
    return 0;
}