From 012c01c85995ff647215a9816e1efe6ae50f777d Mon Sep 17 00:00:00 2001
From: Daniel Klaffenbach <danielklaffenbach@gmail.com>
Date: Sat, 25 Sep 2010 16:06:49 +0200
Subject: [PATCH] Do not allow overclocking per default.

---
 src/mainwindow.cpp |   46 +++++++++++++++++++++++++++++++++++++---------
 src/mainwindow.h   |    2 ++
 src/mainwindow.ui  |    9 +++++++++
 3 files changed, 48 insertions(+), 9 deletions(-)

diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index e069c52..e904561 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -33,6 +33,8 @@
 MainWindow::MainWindow(QWidget *parent) :
     QMainWindow(parent),
     ui(new Ui::MainWindow),
+    //do not allow overclocking per default
+    allowOverclocking(false),
     //create helper process
     helperProcess( this ),
     //create a new, stackable help window
@@ -77,6 +79,7 @@ MainWindow::MainWindow(QWidget *parent) :
     connect(QApplication::desktop(), SIGNAL(resized(int)), this, SLOT(orientationChanged()));
     connect(ui->sr_box, SIGNAL(clicked()), this, SLOT(setSmartReflex()));
     connect(&refreshTimer, SIGNAL(timeout()), this, SLOT(refresh()));
+    connect(ui->actionOverclocking, SIGNAL(toggled(bool)), this, SLOT(setOverclocking()));
 
 }
 
@@ -106,10 +109,19 @@ void MainWindow::adjustFreq()
 
     //maxfreq should not be smaller than minfreq, because we do not want to decrease minfreq
     if (newmax < getMinFreq())
-	newmax = getMinFreq();
+        newmax = getMinFreq();
 
     max.setNum( newmax );
 
+    //check for overclocking
+    #if defined(Q_WS_MAEMO_5)
+    if (this->allowOverclocking == false && newmax > 600000) {
+        QMaemo5InformationBox::information(this, tr( "You need to enable overclocking for setting frequencies above 600MHz!"), 0);
+        refresh();
+        return;
+    }
+    #endif
+
     callHelper( "set_maxfreq", max );
 
     refresh();
@@ -128,10 +140,10 @@ int MainWindow::callHelper(QString action, QString param)
     QStringList arguments;
 
     #if defined(Q_WS_MAEMO_5)
-	//On Maemo 5 the helper script resides in /opt/usr/bin, which is usually not in $PATH
-	arguments.append( "/opt/usr/bin/QCPUFreq.helper" );
+    //On Maemo 5 the helper script resides in /opt/usr/bin, which is usually not in $PATH
+    arguments.append( "/opt/usr/bin/QCPUFreq.helper" );
     #else
-	arguments.append( "QCPUFreq.helper" );
+    arguments.append( "QCPUFreq.helper" );
     #endif
 
     arguments.append( action );
@@ -140,9 +152,9 @@ int MainWindow::callHelper(QString action, QString param)
     helperProcess.start( "sudo", arguments, QIODevice::NotOpen );
 
     if ( showSudoError && !helperProcess.waitForFinished( 400 )) {
-	//do not show this error again
-	showSudoError = false;
-	QMessageBox::critical(this, tr("QCPUFreq"), tr("There seems to be a problem with your sudo setup!"));
+        //do not show this error again
+        showSudoError = false;
+        QMessageBox::critical(this, tr("QCPUFreq"), tr("There seems to be a problem with your sudo setup!"));
     }
 
     return helperProcess.exitCode();
@@ -317,8 +329,8 @@ QString MainWindow::readSysFile(QString sys_file)
 
     //open the file
     if ( !file.exists() || !file.open( QIODevice::ReadOnly ) ) {
-	QMessageBox::critical(this, tr("QCPUFreq"), tr("Could not get information from /sys!"));
-	return "";
+        QMessageBox::critical(this, tr("QCPUFreq"), tr("Could not get information from /sys!"));
+        return "";
     }
 
     //read the file
@@ -414,6 +426,22 @@ void MainWindow::setAutoRotation()
 
 
 /**
+  * SLOT: enable/disable overclocking.
+  */
+void MainWindow::setOverclocking()
+{
+    if (ui->actionOverclocking->isChecked()) {
+        #if defined(Q_WS_MAEMO_5)
+        QMaemo5InformationBox::information(this, tr( "Please note that overclocking voids your warranty and may break your device! Be careful!"), 0);
+        #endif
+        this->allowOverclocking = true;
+    } else {
+        this->allowOverclocking = false;
+    }
+}
+
+
+/**
   * SLOT: Enables or disables Smart Reflex(tm) after pressing sr_btn
   */
 void MainWindow::setSmartReflex()
diff --git a/src/mainwindow.h b/src/mainwindow.h
index a2c3042..eba3082 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -44,12 +44,14 @@ public slots:
     void orientationChanged();
     void refresh();
     void setAutoRotation();
+    void setOverclocking();
     void setSmartReflex();
     void showHelp();
 
 
 private:
     Ui::MainWindow *ui;
+    bool allowOverclocking;
     int callHelper( QString action, QString param );
     QString getCPUTemp();
     int getMaxFreq();
diff --git a/src/mainwindow.ui b/src/mainwindow.ui
index 3cff619..ad98fb0 100644
--- a/src/mainwindow.ui
+++ b/src/mainwindow.ui
@@ -363,6 +363,7 @@
     <property name="title">
      <string>File</string>
     </property>
+    <addaction name="actionOverclocking"/>
     <addaction name="actionHelp"/>
     <addaction name="actionAbout"/>
    </widget>
@@ -378,6 +379,14 @@
     <string>Help</string>
    </property>
   </action>
+  <action name="actionOverclocking">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>Enable overclocking</string>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <resources/>
-- 
1.7.9.5