Allow to enumerate the tty0tty devices on Linux

Now QSPI return a list of virtual serial ports
which are created by the tty0tty driver:

http://sourceforge.net/p/tty0tty/wiki/Home/

Change-Id: I7389b5ac656d54056baffd0922596feff9fe3788
Reviewed-by: Sergey Belyashov <Sergey.Belyashov@gmail.com>
Reviewed-by: Denis Shienkov <denis.shienkov@gmail.com>

1 files changed, 17 insertions, 3 deletions

diff --git a/src/serialport/qserialportinfo_unix.cpp b/src/serialport/qserialportinfo_unix.cpp
index f3f5a27..f52516f 100644
--- a/src/serialport/qserialportinfo_unix.cpp
+++ b/src/serialport/qserialportinfo_unix.cpp
@@ -75,7 +75,8 @@ static QStringList filteredDeviceFilePaths()
     << QStringLiteral("ttymxc*")  // Motorola IMX serial ports (i.e. Freescale i.MX).
     << QStringLiteral("ttyAMA*")  // AMBA serial device for embedded platform on ARM (i.e. Raspberry Pi).
     << QStringLiteral("rfcomm*")  // Bluetooth serial device.
-    << QStringLiteral("ircomm*"); // IrDA serial device.
+    << QStringLiteral("ircomm*")  // IrDA serial device.
+    << QStringLiteral("tnt*");    // Virtual tty0tty serial device.
 #elif defined(Q_OS_FREEBSD)
     << QStringLiteral("cu*");
 #elif defined(Q_OS_QNX)
@@ -436,6 +437,15 @@ static bool isRfcommDevice(const QString &portName)
     return true;
 }
 
+// provided by the tty0tty driver
+static bool isVirtualNullModemDevice(const QString &portName)
+{
+    if (!portName.startsWith(QLatin1String("tnt")))
+        return false;
+
+    return true;
+}
+
 static QString ueventProperty(const QDir &targetDir, const QByteArray &pattern)
 {
     QFile f(QFileInfo(targetDir, QStringLiteral("uevent")).absoluteFilePath());
@@ -530,8 +540,10 @@ QList<QSerialPortInfo> availablePortsBySysfs(bool &ok)
 
         const QString driverName = deviceDriver(targetDir);
         if (driverName.isEmpty()) {
-            if (!isRfcommDevice(priv.portName))
+            if (!isRfcommDevice(priv.portName)
+                    && !isVirtualNullModemDevice(priv.portName)) {
                 continue;
+            }
         }
 
         priv.device = QSerialPortInfoPrivate::portNameToSystemLocation(priv.portName);
@@ -700,8 +712,10 @@ QList<QSerialPortInfo> availablePortsByUdev(bool &ok)
             priv.vendorIdentifier = deviceVendorIdentifier(dev.data(), priv.hasVendorIdentifier);
             priv.productIdentifier = deviceProductIdentifier(dev.data(), priv.hasProductIdentifier);
         } else {
-            if (!isRfcommDevice(priv.portName))
+            if (!isRfcommDevice(priv.portName)
+                    && !isVirtualNullModemDevice(priv.portName)) {
                 continue;
+            }
         }
 
         serialPortInfoList.append(priv);