Blackberry backend honors alwaysOn property

Make sure the DCMD_SENSOR_BKGRND command is sent to the sensor when we
call start(). Also ensure we send again the command when the property
is updated.

Change-Id: Ia37a96ba4dfc6fc1bdecf54ad2b730412939b32a
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>
Reviewed-by: Tennessee Carmel-Veilleux <tcarmelveilleux@rim.com>
Reviewed-by: Lincoln Ramsay <lincoln.ramsay@nokia.com>

2 files changed, 19 insertions, 0 deletions

diff --git a/src/plugins/sensors/blackberry/bbsensorbackend.cpp b/src/plugins/sensors/blackberry/bbsensorbackend.cpp
index e659ee87..d39f6e4a 100644
--- a/src/plugins/sensors/blackberry/bbsensorbackend.cpp
+++ b/src/plugins/sensors/blackberry/bbsensorbackend.cpp
@@ -59,6 +59,7 @@ BbSensorBackendBase::BbSensorBackendBase(const QString &devicePath, sensor_type_
                                          QSensor *sensor)
     : QSensorBackend(sensor), m_deviceFile(devicePath), m_sensorType(sensorType)
 {
+    connect(sensor, SIGNAL(alwaysOnChanged()), this, SLOT(applyAlwaysOnProperty()));
 }
 
 QFile &BbSensorBackendBase::deviceFile()
@@ -147,6 +148,8 @@ void BbSensorBackendBase::start()
         return;
     }
 
+    applyAlwaysOnProperty();
+
     m_socketNotifier.reset(new QSocketNotifier(m_deviceFile.handle(), QSocketNotifier::Read));
     connect(m_socketNotifier.data(), SIGNAL(activated(int)), this, SLOT(dataAvailable()));
 }
@@ -173,3 +176,18 @@ void BbSensorBackendBase::dataAvailable()
         }
     }
 }
+
+void BbSensorBackendBase::applyAlwaysOnProperty()
+{
+    if (!m_deviceFile.isOpen())
+        return;
+
+    sensor_devctl_bkgrnd_u bgState;
+    bgState.tx.enable = sensor()->isAlwaysOn() ? 1 : 0;
+
+    const int result = devctl(m_deviceFile.handle(), DCMD_SENSOR_BKGRND, &bgState, sizeof(bgState), NULL);
+    if (result != EOK) {
+        perror(QString::fromLatin1("Setting sensor always on for %1 failed")
+               .arg(m_deviceFile.fileName()).toLocal8Bit());
+    }
+}
diff --git a/src/plugins/sensors/blackberry/bbsensorbackend.h b/src/plugins/sensors/blackberry/bbsensorbackend.h
index 254ad90f..a3afb372 100644
--- a/src/plugins/sensors/blackberry/bbsensorbackend.h
+++ b/src/plugins/sensors/blackberry/bbsensorbackend.h
@@ -81,6 +81,7 @@ protected:
 
 private slots:
     void dataAvailable();
+    void applyAlwaysOnProperty();
 
 private:
     QFile m_deviceFile;