power.h revision d6054a36475b5ff502b4af78f7d272a713c1a8e7
1/* 2 * Copyright (C) 2008 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#ifndef _HARDWARE_POWER_H 18#define _HARDWARE_POWER_H 19 20#include <stdint.h> 21 22#if __cplusplus 23extern "C" { 24#endif 25 26enum { 27 PARTIAL_WAKE_LOCK = 1, // the cpu stays on, but the screen is off 28 FULL_WAKE_LOCK = 2 // the screen is also on 29}; 30 31// while you have a lock held, the device will stay on at least at the 32// level you request. 33int acquire_wake_lock(int lock, const char* id); 34int release_wake_lock(const char* id); 35 36 37enum { 38 KEYBOARD_LIGHT = 0x00000001, 39 SCREEN_LIGHT = 0x00000002, 40 BUTTON_LIGHT = 0x00000004, 41}; 42 43// set the lights identified in mask to the brightness specified 44// in value. for example 45// set_light_brightness(SCREEN_LIGHT | KEYBOARD_LIGHT, 200); 46// sets the screen and keyboard lights to brightness 200 47int set_light_brightness(unsigned int mask, unsigned int brightness); 48 49// true if you want the screen on, false if you want it off 50int set_screen_state(int on); 51 52// set how long to stay awake after the last user activity in seconds 53int set_last_user_activity_timeout(int64_t delay); 54 55 56#if __cplusplus 57} // extern "C" 58#endif 59 60#endif // _HARDWARE_POWER_H 61