firmware/target/hosted/android/powermgmt-android.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2010 by Thomas Martitz
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22
  23 #include <jni.h>
  24 #include <stdbool.h>
  25 #include "config.h"
  26 #include "system.h"
  27
  28 extern jclass  RockboxService_class;
  29 extern jobject RockboxService_instance;
  30
  31 static jfieldID _battery_level;
  32
  33 void powermgmt_init_target(void)
  34 {
  35     JNIEnv *env_ptr = getJavaEnvironment();
  36
  37     jmethodID initBatteryMonitor = (*env_ptr)->GetMethodID(env_ptr,
  38                                                            RockboxService_class,
  39                                                            "initBatteryMonitor",
  40                                                            "()V");
  41     /* start the monitor */
  42     (*env_ptr)->CallVoidMethod(env_ptr,
  43                                RockboxService_instance,
  44                                initBatteryMonitor);
  45
  46     /* cache the battery level field id */
  47     _battery_level = (*env_ptr)->GetFieldID(env_ptr,
  48                                             RockboxService_class,
  49                                             "battery_level",
  50                                             "I");
  51 }
  52
  53 int battery_level(void)
  54 {
  55     JNIEnv *env_ptr = getJavaEnvironment();
  56
  57     return (*env_ptr)->GetIntField(env_ptr, RockboxService_instance, _battery_level);
  58 }
  59
  60 int battery_time(void)
  61 {   /* cannot calculate yet */
  62     return 0;
  63 }
  64
  65 /* should always be safe on android targets, the host shuts us down before */
  66 bool battery_level_safe(void)
  67 {
  68     return true;
  69 }
  70
  71 /* TODO */
  72 unsigned battery_voltage(void)
  73 {
  74     return 0;
  75 }