linuxfb: Add option to not switch to graphics mode

When in graphics mode, printf/qDebug doesn't get printed
on the console. So, it's nice to have this option for
debugging.

Change-Id: Idd552292da2526e07d9c74d2a901e0d675edb2e1
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
Reviewed-by: Thomas Senyk <thomas.senyk@nokia.com>
Reviewed-by: Girish Ramakrishnan <girish.1.ramakrishnan@nokia.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/src/plugins/platforms/linuxfb/qlinuxfbscreen.cpp b/src/plugins/platforms/linuxfb/qlinuxfbscreen.cpp
index 7b9eacf59f..a63979cc8f 100644
--- a/src/plugins/platforms/linuxfb/qlinuxfbscreen.cpp
+++ b/src/plugins/platforms/linuxfb/qlinuxfbscreen.cpp
@@ -333,10 +333,13 @@ bool QLinuxFbScreen::initialize(const QStringList &args)
     QString fbDevice, ttyDevice;
     QSize userMmSize;
     QRect userGeometry;
+    bool doSwitchToGraphicsMode = true;
 
     // Parse arguments
     foreach (const QString &arg, args) {
-        if (sizeRx.indexIn(arg) != -1)
+        if (arg == QLatin1String("nographicsmodeswitch"))
+            doSwitchToGraphicsMode = false;
+        else if (sizeRx.indexIn(arg) != -1)
             userGeometry.setSize(QSize(sizeRx.cap(1).toInt(), sizeRx.cap(2).toInt()));
         else if (offsetRx.indexIn(arg) != -1)
             userGeometry.setTopLeft(QPoint(offsetRx.cap(1).toInt(), offsetRx.cap(2).toInt()));
@@ -399,7 +402,7 @@ bool QLinuxFbScreen::initialize(const QStringList &args)
     if (mTtyFd == -1)
         qWarning() << "Failed to open tty" << strerror(errno);
 
-    if (!switchToGraphicsMode(mTtyFd, &mOldTtyMode))
+    if (doSwitchToGraphicsMode && !switchToGraphicsMode(mTtyFd, &mOldTtyMode))
         qWarning() << "Failed to set graphics mode" << strerror(errno);
 
     blankScreen(mFbFd, false);