6f26891d67
Use the wakeup count interface for requesting suspend, instead of autosleep, to allow userspace to collect stats on suspend/resume activity. Change-Id: I44b5ef031b2bdc5b09c904fb2adbbe16370c2984
112 lines
2.2 KiB
C
112 lines
2.2 KiB
C
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdbool.h>
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#define LOG_TAG "libsuspend"
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#include <cutils/log.h>
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#include <suspend/autosuspend.h>
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#include "autosuspend_ops.h"
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static struct autosuspend_ops *autosuspend_ops;
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static bool autosuspend_enabled;
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static bool autosuspend_inited;
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static int autosuspend_init(void)
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{
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if (autosuspend_inited) {
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return 0;
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}
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autosuspend_ops = autosuspend_earlysuspend_init();
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if (autosuspend_ops) {
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goto out;
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}
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/* Remove autosleep so userspace can manager suspend/resume and keep stats */
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#if 0
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autosuspend_ops = autosuspend_autosleep_init();
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if (autosuspend_ops) {
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goto out;
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}
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#endif
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autosuspend_ops = autosuspend_wakeup_count_init();
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if (autosuspend_ops) {
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goto out;
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}
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if (!autosuspend_ops) {
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ALOGE("failed to initialize autosuspend\n");
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return -1;
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}
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out:
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autosuspend_inited = true;
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ALOGV("autosuspend initialized\n");
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return 0;
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}
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int autosuspend_enable(void)
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{
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int ret;
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ret = autosuspend_init();
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if (ret) {
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return ret;
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}
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ALOGV("autosuspend_enable\n");
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if (autosuspend_enabled) {
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return 0;
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}
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ret = autosuspend_ops->enable();
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if (ret) {
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return ret;
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}
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autosuspend_enabled = true;
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return 0;
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}
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int autosuspend_disable(void)
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{
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int ret;
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ret = autosuspend_init();
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if (ret) {
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return ret;
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}
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ALOGV("autosuspend_disable\n");
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if (!autosuspend_enabled) {
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return 0;
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}
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ret = autosuspend_ops->disable();
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if (ret) {
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return ret;
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}
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autosuspend_enabled = false;
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return 0;
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}
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