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/*
* Copyright (C) 2012 The CyanogenMod 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.
*/
package com.android.settings.cyanogenmod;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.SettingsPreferenceFragment;
import com.android.settings.Utils;
//
// CPU Related Settings
//
public class Processor extends SettingsPreferenceFragment implements
Preference.OnPreferenceChangeListener {
public static final String FREQ_CUR_PREF = "pref_cpu_freq_cur";
public static final String SCALE_CUR_FILE = "/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq";
public static final String FREQINFO_CUR_FILE = "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq";
private static String FREQ_CUR_FILE = SCALE_CUR_FILE;
public static final String GOV_PREF = "pref_cpu_gov";
public static final String GOV_LIST_FILE = "/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors";
public static final String GOV_FILE = "/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor";
public static final String FREQ_MIN_PREF = "pref_cpu_freq_min";
public static final String FREQ_MAX_PREF = "pref_cpu_freq_max";
public static final String FREQ_LIST_FILE = "/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies";
public static String FREQ_MAX_FILE = null;
public static String FREQ_MIN_FILE = null;
public static final String SOB_PREF = "pref_cpu_set_on_boot";
protected static boolean freqCapFilesInitialized = false;
private static final String TAG = "CPUSettings";
private String mGovernorFormat;
private String mMinFrequencyFormat;
private String mMaxFrequencyFormat;
private Preference mCurFrequencyPref;
private ListPreference mGovernorPref;
private ListPreference mMinFrequencyPref;
private ListPreference mMaxFrequencyPref;
private class CurCPUThread extends Thread {
private boolean mInterrupt = false;
public void interrupt() {
mInterrupt = true;
}
@Override
public void run() {
try {
while (!mInterrupt) {
sleep(500);
final String curFreq = Utils.fileReadOneLine(FREQ_CUR_FILE);
if (curFreq != null)
mCurCPUHandler.sendMessage(mCurCPUHandler.obtainMessage(0, curFreq));
}
} catch (InterruptedException e) {
}
}
};
private CurCPUThread mCurCPUThread = new CurCPUThread();
private Handler mCurCPUHandler = new Handler() {
public void handleMessage(Message msg) {
mCurFrequencyPref.setSummary(toMHz((String) msg.obj));
}
};
private void initFreqCapFiles()
{
if (freqCapFilesInitialized) return;
FREQ_MAX_FILE = getString(R.string.max_cpu_freq_file);
FREQ_MIN_FILE = getString(R.string.min_cpu_freq_file);
freqCapFilesInitialized = true;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
initFreqCapFiles();
mGovernorFormat = getString(R.string.cpu_governors_summary);
mMinFrequencyFormat = getString(R.string.cpu_min_freq_summary);
mMaxFrequencyFormat = getString(R.string.cpu_max_freq_summary);
String[] availableFrequencies = new String[0];
String[] availableGovernors = new String[0];
String[] frequencies;
String availableGovernorsLine;
String availableFrequenciesLine;
String temp;
addPreferencesFromResource(R.xml.processor_settings);
PreferenceScreen prefScreen = getPreferenceScreen();
mGovernorPref = (ListPreference) prefScreen.findPreference(GOV_PREF);
mCurFrequencyPref = (Preference) prefScreen.findPreference(FREQ_CUR_PREF);
mMinFrequencyPref = (ListPreference) prefScreen.findPreference(FREQ_MIN_PREF);
mMaxFrequencyPref = (ListPreference) prefScreen.findPreference(FREQ_MAX_PREF);
/* Governor
Some systems might not use governors */
if (!Utils.fileExists(GOV_LIST_FILE) || !Utils.fileExists(GOV_FILE) || (temp = Utils.fileReadOneLine(GOV_FILE)) == null || (availableGovernorsLine = Utils.fileReadOneLine(GOV_LIST_FILE)) == null) {
prefScreen.removePreference(mGovernorPref);
} else {
availableGovernors = availableGovernorsLine.split(" ");
mGovernorPref.setEntryValues(availableGovernors);
mGovernorPref.setEntries(availableGovernors);
mGovernorPref.setValue(temp);
mGovernorPref.setSummary(String.format(mGovernorFormat, temp));
mGovernorPref.setOnPreferenceChangeListener(this);
}
// Disable the min/max list if we dont have a list file
if (!Utils.fileExists(FREQ_LIST_FILE) || (availableFrequenciesLine = Utils.fileReadOneLine(FREQ_LIST_FILE)) == null) {
mMinFrequencyPref.setEnabled(false);
mMaxFrequencyPref.setEnabled(false);
} else {
availableFrequencies = availableFrequenciesLine.split(" ");
frequencies = new String[availableFrequencies.length];
for (int i = 0; i < frequencies.length; i++) {
frequencies[i] = toMHz(availableFrequencies[i]);
}
// Min frequency
if (!Utils.fileExists(FREQ_MIN_FILE) || (temp = Utils.fileReadOneLine(FREQ_MIN_FILE)) == null) {
mMinFrequencyPref.setEnabled(false);
} else {
mMinFrequencyPref.setEntryValues(availableFrequencies);
mMinFrequencyPref.setEntries(frequencies);
mMinFrequencyPref.setValue(temp);
mMinFrequencyPref.setSummary(String.format(mMinFrequencyFormat, toMHz(temp)));
mMinFrequencyPref.setOnPreferenceChangeListener(this);
}
// Max frequency
if (!Utils.fileExists(FREQ_MAX_FILE) || (temp = Utils.fileReadOneLine(FREQ_MAX_FILE)) == null) {
mMaxFrequencyPref.setEnabled(false);
} else {
mMaxFrequencyPref.setEntryValues(availableFrequencies);
mMaxFrequencyPref.setEntries(frequencies);
mMaxFrequencyPref.setValue(temp);
mMaxFrequencyPref.setSummary(String.format(mMaxFrequencyFormat, toMHz(temp)));
mMaxFrequencyPref.setOnPreferenceChangeListener(this);
}
}
// Cur frequency
if (!Utils.fileExists(FREQ_CUR_FILE)) {
FREQ_CUR_FILE = FREQINFO_CUR_FILE;
}
if (!Utils.fileExists(FREQ_CUR_FILE) || (temp = Utils.fileReadOneLine(FREQ_CUR_FILE)) == null) {
mCurFrequencyPref.setEnabled(false);
} else {
mCurFrequencyPref.setSummary(toMHz(temp));
mCurCPUThread.start();
}
}
@Override
public void onResume() {
String temp;
super.onResume();
initFreqCapFiles();
if (Utils.fileExists(FREQ_MIN_FILE) && (temp = Utils.fileReadOneLine(FREQ_MIN_FILE)) != null) {
mMinFrequencyPref.setValue(temp);
mMinFrequencyPref.setSummary(String.format(mMinFrequencyFormat, toMHz(temp)));
}
if (Utils.fileExists(FREQ_MAX_FILE) && (temp = Utils.fileReadOneLine(FREQ_MAX_FILE)) != null) {
mMaxFrequencyPref.setValue(temp);
mMaxFrequencyPref.setSummary(String.format(mMaxFrequencyFormat, toMHz(temp)));
}
if (Utils.fileExists(GOV_FILE) && (temp = Utils.fileReadOneLine(GOV_FILE)) != null) {
mGovernorPref.setSummary(String.format(mGovernorFormat, temp));
}
}
@Override
public void onDestroy() {
super.onDestroy();
mCurCPUThread.interrupt();
try {
mCurCPUThread.join();
} catch (InterruptedException e) {
}
}
public boolean onPreferenceChange(Preference preference, Object newValue) {
initFreqCapFiles();
String fname = "";
if (newValue != null) {
if (preference == mGovernorPref) {
fname = GOV_FILE;
} else if (preference == mMinFrequencyPref) {
fname = FREQ_MIN_FILE;
} else if (preference == mMaxFrequencyPref) {
fname = FREQ_MAX_FILE;
}
if (Utils.fileWriteOneLine(fname, (String) newValue)) {
if (preference == mGovernorPref) {
mGovernorPref.setSummary(String.format(mGovernorFormat, (String) newValue));
} else if (preference == mMinFrequencyPref) {
mMinFrequencyPref.setSummary(String.format(mMinFrequencyFormat,
toMHz((String) newValue)));
} else if (preference == mMaxFrequencyPref) {
mMaxFrequencyPref.setSummary(String.format(mMaxFrequencyFormat,
toMHz((String) newValue)));
}
return true;
} else {
return false;
}
}
return false;
}
private String toMHz(String mhzString) {
return new StringBuilder().append(Integer.valueOf(mhzString) / 1000).append(" MHz")
.toString();
}
}
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