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 #define LOG_TAG "libsuspend" 18 19 #include <stdbool.h> 20 21 #include <log/log.h> 22 23 #include <suspend/autosuspend.h> 24 25 #include "autosuspend_ops.h" 26 27 static struct autosuspend_ops* autosuspend_ops = NULL; 28 static bool autosuspend_enabled; 29 autosuspend_init(void)30static int autosuspend_init(void) { 31 if (autosuspend_ops != NULL) { 32 return 0; 33 } 34 35 autosuspend_ops = autosuspend_wakeup_count_init(); 36 if (autosuspend_ops == NULL) { 37 ALOGE("failed to initialize autosuspend"); 38 return -1; 39 } 40 41 ALOGV("autosuspend initialized"); 42 return 0; 43 } 44 autosuspend_enable(void)45int autosuspend_enable(void) { 46 int ret; 47 48 ret = autosuspend_init(); 49 if (ret) { 50 return ret; 51 } 52 53 ALOGV("autosuspend_enable"); 54 55 if (autosuspend_enabled) { 56 return 0; 57 } 58 59 ret = autosuspend_ops->enable(); 60 if (ret) { 61 return ret; 62 } 63 64 autosuspend_enabled = true; 65 return 0; 66 } 67 autosuspend_disable(void)68int autosuspend_disable(void) { 69 int ret; 70 71 ret = autosuspend_init(); 72 if (ret) { 73 return ret; 74 } 75 76 ALOGV("autosuspend_disable"); 77 78 if (!autosuspend_enabled) { 79 return 0; 80 } 81 82 ret = autosuspend_ops->disable(); 83 if (ret) { 84 return ret; 85 } 86 87 autosuspend_enabled = false; 88 return 0; 89 } 90 autosuspend_force_suspend(int timeout_ms)91int autosuspend_force_suspend(int timeout_ms) { 92 int ret; 93 94 ret = autosuspend_init(); 95 if (ret) { 96 return ret; 97 } 98 99 ALOGV("autosuspend_force_suspend"); 100 101 return autosuspend_ops->force_suspend(timeout_ms); 102 } 103 autosuspend_set_wakeup_callback(void (* func)(bool success))104void autosuspend_set_wakeup_callback(void (*func)(bool success)) { 105 int ret; 106 107 ret = autosuspend_init(); 108 if (ret) { 109 return; 110 } 111 112 ALOGV("set_wakeup_callback"); 113 114 autosuspend_ops->set_wakeup_callback(func); 115 } 116