Add iio-sensor-proxy backend

iio-sensor-proxy is a daemon that listens to sensors on IIO
subsystem on Linux and provides access to the sensor readings
over D-Bus. Currently it provides only orientation and ambient-
light level.

https://github.com/hadess/iio-sensor-proxy

Change-Id: I035bda0b43a16552a9f2bd88a064e53d5f105451
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>

12 files changed, 657 insertions, 1 deletions

diff --git a/src/plugins/sensors/iio-sensor-proxy/iio-sensor-proxy.pro b/src/plugins/sensors/iio-sensor-proxy/iio-sensor-proxy.pro
new file mode 100644
index 0000000..355097a
--- /dev/null
+++ b/src/plugins/sensors/iio-sensor-proxy/iio-sensor-proxy.pro
@@ -0,0 +1,26 @@
+TARGET = qtsensors_iio-sensor-proxy
+QT = core dbus sensors
+
+PLUGIN_TYPE = sensors
+PLUGIN_CLASS_NAME = IIOSensorProxySensorPlugin
+load(qt_plugin)
+
+!android:LIBS += -lrt
+HEADERS += iiosensorproxysensorbase.h \
+    iiosensorproxylightsensor.h \
+    iiosensorproxyorientationsensor.h
+
+SOURCES += iiosensorproxysensorbase.cpp \
+    iiosensorproxylightsensor.cpp \
+    iiosensorproxyorientationsensor.cpp \
+    main.cpp
+
+DBUS_INTERFACES += sensor_proxy dbus_properties
+
+sensor_proxy.files = net.hadess.SensorProxy.xml
+sensor_proxy.header_flags = -N
+
+dbus_properties.files = org.freedesktop.DBus.Properties.xml
+dbus_properties.header_flags = -N
+
+OTHER_FILES = plugin.json $$DBUS_INTERFACES
diff --git a/src/plugins/sensors/iio-sensor-proxy/iiosensorproxylightsensor.cpp b/src/plugins/sensors/iio-sensor-proxy/iiosensorproxylightsensor.cpp
new file mode 100644
index 0000000..38bce63
--- /dev/null
+++ b/src/plugins/sensors/iio-sensor-proxy/iiosensorproxylightsensor.cpp
@@ -0,0 +1,94 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Alexander Volkov <a.volkov@rusbitech.ru>
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtSensors module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "iiosensorproxylightsensor.h"
+#include "sensorproxy_interface.h"
+
+#include <QtDBus/QDBusPendingReply>
+
+char const * const IIOSensorProxyLightSensor::id("iio-sensor-proxy.lightsensor");
+
+static inline QString dbusPath() { return QStringLiteral("/net/hadess/SensorProxy"); }
+
+IIOSensorProxyLightSensor::IIOSensorProxyLightSensor(QSensor *sensor)
+    : IIOSensorProxySensorBase(dbusPath(), NetHadessSensorProxyInterface::staticInterfaceName(), sensor)
+{
+    setReading<QLightReading>(&m_reading);
+    m_sensorProxyInterface = new NetHadessSensorProxyInterface(serviceName(), dbusPath(),
+                                                               QDBusConnection::systemBus(), this);
+}
+
+IIOSensorProxyLightSensor::~IIOSensorProxyLightSensor()
+{
+}
+
+void IIOSensorProxyLightSensor::start()
+{
+    if (isServiceRunning()) {
+        if (m_sensorProxyInterface->hasAmbientLight()
+            && m_sensorProxyInterface->lightLevelUnit() == QLatin1String("lux")) {
+            QDBusPendingReply<> reply = m_sensorProxyInterface->ClaimLight();
+            reply.waitForFinished();
+            if (!reply.isError()) {
+                updateLightLevel(m_sensorProxyInterface->lightLevel());
+                return;
+            }
+        }
+    }
+    sensorStopped();
+}
+
+void IIOSensorProxyLightSensor::stop()
+{
+    if (isServiceRunning()) {
+        QDBusPendingReply<> reply = m_sensorProxyInterface->ReleaseLight();
+        reply.waitForFinished();
+    }
+    sensorStopped();
+}
+
+void IIOSensorProxyLightSensor::updateProperties(const QVariantMap &changedProperties)
+{
+    if (changedProperties.contains("LightLevel")) {
+        double lux = changedProperties.value("LightLevel").toDouble();
+        updateLightLevel(lux);
+    }
+}
+
+void IIOSensorProxyLightSensor::updateLightLevel(double lux)
+{
+    m_reading.setLux(lux);
+    m_reading.setTimestamp(produceTimestamp());
+    newReadingAvailable();
+}
diff --git a/src/plugins/sensors/iio-sensor-proxy/iiosensorproxylightsensor.h b/src/plugins/sensors/iio-sensor-proxy/iiosensorproxylightsensor.h
new file mode 100644
index 0000000..96cedc7
--- /dev/null
+++ b/src/plugins/sensors/iio-sensor-proxy/iiosensorproxylightsensor.h
@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Alexander Volkov <a.volkov@rusbitech.ru>
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtSensors module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef IIOSENSORPROXY_LIGHTSENSOR_H
+#define IIOSENSORPROXY_LIGHTSENSOR_H
+
+#include "iiosensorproxysensorbase.h"
+
+#include <qlightsensor.h>
+
+class NetHadessSensorProxyInterface;
+
+class IIOSensorProxyLightSensor : public IIOSensorProxySensorBase
+{
+    Q_OBJECT
+public:
+    static char const * const id;
+
+    IIOSensorProxyLightSensor(QSensor *sensor);
+    ~IIOSensorProxyLightSensor();
+
+    void start() Q_DECL_OVERRIDE;
+    void stop() Q_DECL_OVERRIDE;
+
+protected:
+    void updateProperties(const QVariantMap &changedProperties) Q_DECL_OVERRIDE;
+
+private:
+    void updateLightLevel(double lux);
+
+    QLightReading m_reading;
+    NetHadessSensorProxyInterface *m_sensorProxyInterface;
+};
+
+#endif // IIOSENSORPROXY_LIGHTSENSOR_H
diff --git a/src/plugins/sensors/iio-sensor-proxy/iiosensorproxyorientationsensor.cpp b/src/plugins/sensors/iio-sensor-proxy/iiosensorproxyorientationsensor.cpp
new file mode 100644
index 0000000..b904217
--- /dev/null
+++ b/src/plugins/sensors/iio-sensor-proxy/iiosensorproxyorientationsensor.cpp
@@ -0,0 +1,104 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Alexander Volkov <a.volkov@rusbitech.ru>
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtSensors module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "iiosensorproxyorientationsensor.h"
+#include "sensorproxy_interface.h"
+
+#include <QtDBus/QDBusPendingReply>
+
+char const * const IIOSensorProxyOrientationSensor::id("iio-sensor-proxy.orientationsensor");
+
+static inline QString dbusPath() { return QStringLiteral("/net/hadess/SensorProxy"); }
+
+IIOSensorProxyOrientationSensor::IIOSensorProxyOrientationSensor(QSensor *sensor)
+    : IIOSensorProxySensorBase(dbusPath(), NetHadessSensorProxyInterface::staticInterfaceName(), sensor)
+{
+    setReading<QOrientationReading>(&m_reading);
+    m_sensorProxyInterface = new NetHadessSensorProxyInterface(serviceName(), dbusPath(),
+                                                               QDBusConnection::systemBus(), this);
+}
+
+IIOSensorProxyOrientationSensor::~IIOSensorProxyOrientationSensor()
+{
+}
+
+void IIOSensorProxyOrientationSensor::start()
+{
+    if (isServiceRunning()) {
+        if (m_sensorProxyInterface->hasAccelerometer()) {
+            QDBusPendingReply<> reply = m_sensorProxyInterface->ClaimAccelerometer();
+            reply.waitForFinished();
+            if (!reply.isError()) {
+                QString orientation = m_sensorProxyInterface->accelerometerOrientation();
+                updateOrientation(orientation);
+                return;
+            }
+        }
+    }
+    sensorStopped();
+}
+
+void IIOSensorProxyOrientationSensor::stop()
+{
+    if (isServiceRunning()) {
+        QDBusPendingReply<> reply = m_sensorProxyInterface->ReleaseAccelerometer();
+        reply.waitForFinished();
+    }
+    sensorStopped();
+}
+
+void IIOSensorProxyOrientationSensor::updateProperties(const QVariantMap &changedProperties)
+{
+    if (changedProperties.contains("AccelerometerOrientation")) {
+        QString orientation = changedProperties.value("AccelerometerOrientation").toString();
+        updateOrientation(orientation);
+    }
+}
+
+void IIOSensorProxyOrientationSensor::updateOrientation(const QString &orientation)
+{
+    QOrientationReading::Orientation o = QOrientationReading::Undefined;
+    if (orientation == QLatin1String("normal"))
+        o = QOrientationReading::TopUp;
+    else if (orientation == QLatin1String("bottom-up"))
+        o = QOrientationReading::TopDown;
+    else if (orientation == QLatin1String("left-up"))
+        o = QOrientationReading::LeftUp;
+    else if (orientation == QLatin1String("right-up"))
+        o = QOrientationReading::RightUp;
+
+    m_reading.setOrientation(o);
+    m_reading.setTimestamp(produceTimestamp());
+    newReadingAvailable();
+}
diff --git a/src/plugins/sensors/iio-sensor-proxy/iiosensorproxyorientationsensor.h b/src/plugins/sensors/iio-sensor-proxy/iiosensorproxyorientationsensor.h
new file mode 100644
index 0000000..39bc4ee
--- /dev/null
+++ b/src/plugins/sensors/iio-sensor-proxy/iiosensorproxyorientationsensor.h
@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Alexander Volkov <a.volkov@rusbitech.ru>
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtSensors module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef IIOSENSORPROXY_ORIENTATIONSENSOR_H
+#define IIOSENSORPROXY_ORIENTATIONSENSOR_H
+
+#include "iiosensorproxysensorbase.h"
+
+#include <qorientationsensor.h>
+
+class NetHadessSensorProxyInterface;
+
+class IIOSensorProxyOrientationSensor : public IIOSensorProxySensorBase
+{
+    Q_OBJECT
+public:
+    static char const * const id;
+
+    IIOSensorProxyOrientationSensor(QSensor *sensor);
+    ~IIOSensorProxyOrientationSensor();
+
+    void start() Q_DECL_OVERRIDE;
+    void stop() Q_DECL_OVERRIDE;
+
+protected:
+    void updateProperties(const QVariantMap &changedProperties) Q_DECL_OVERRIDE;
+
+private:
+    void updateOrientation(const QString &orientation);
+
+    QOrientationReading m_reading;
+    NetHadessSensorProxyInterface *m_sensorProxyInterface;
+};
+
+#endif // IIOSENSORPROXY_ORIENTATIONSENSOR_H
diff --git a/src/plugins/sensors/iio-sensor-proxy/iiosensorproxysensorbase.cpp b/src/plugins/sensors/iio-sensor-proxy/iiosensorproxysensorbase.cpp
new file mode 100644
index 0000000..09cb2a3
--- /dev/null
+++ b/src/plugins/sensors/iio-sensor-proxy/iiosensorproxysensorbase.cpp
@@ -0,0 +1,107 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Alexander Volkov <a.volkov@rusbitech.ru>
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtSensors module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "iiosensorproxysensorbase.h"
+#include "sensorproxy_interface.h"
+#include "properties_interface.h"
+
+#include <QtDBus/QDBusConnection>
+#include <QtDBus/QDBusServiceWatcher>
+#include <QtDBus/QDBusConnectionInterface>
+
+#include <time.h>
+
+quint64 IIOSensorProxySensorBase::produceTimestamp()
+{
+    struct timespec tv;
+    int ok;
+
+#ifdef CLOCK_MONOTONIC_RAW
+    ok = clock_gettime(CLOCK_MONOTONIC_RAW, &tv);
+    if (ok != 0)
+#endif
+    ok = clock_gettime(CLOCK_MONOTONIC, &tv);
+    Q_ASSERT(ok == 0);
+
+    quint64 result = (tv.tv_sec * 1000000ULL) + (tv.tv_nsec * 0.001); // scale to microseconds
+    return result;
+}
+
+IIOSensorProxySensorBase::IIOSensorProxySensorBase(const QString& dbusPath, const QString dbusIface, QSensor *sensor)
+    : QSensorBackend(sensor)
+    , m_dbusInterface(dbusIface)
+{
+    QDBusServiceWatcher *watcher = new QDBusServiceWatcher(serviceName(), QDBusConnection::systemBus(),
+                                                           QDBusServiceWatcher::WatchForRegistration |
+                                                           QDBusServiceWatcher::WatchForUnregistration, this);
+    connect(watcher, SIGNAL(serviceRegistered(QString)),
+            this, SLOT(serviceRegistered()));
+    connect(watcher, SIGNAL(serviceUnregistered(QString)),
+            this, SLOT(serviceUnregistered()));
+
+    m_serviceRunning = QDBusConnection::systemBus().interface()->isServiceRegistered(serviceName());
+
+    m_propertiesInterface = new OrgFreedesktopDBusPropertiesInterface(serviceName(), dbusPath,
+                                                                      QDBusConnection::systemBus(), this);
+    connect(m_propertiesInterface, SIGNAL(PropertiesChanged(QString,QVariantMap,QStringList)),
+            this, SLOT(propertiesChanged(QString,QVariantMap,QStringList)));
+}
+
+IIOSensorProxySensorBase::~IIOSensorProxySensorBase()
+{
+}
+
+QString IIOSensorProxySensorBase::serviceName() const
+{
+    return QLatin1String("net.hadess.SensorProxy");
+}
+
+void IIOSensorProxySensorBase::serviceRegistered()
+{
+    m_serviceRunning = true;
+}
+
+void IIOSensorProxySensorBase::serviceUnregistered()
+{
+    m_serviceRunning = false;
+    sensorStopped();
+}
+
+void IIOSensorProxySensorBase::propertiesChanged(const QString &interface,
+                                                 const QVariantMap &changedProperties,
+                                                 const QStringList &/*invalidatedProperties*/)
+{
+    if (interface == m_dbusInterface)
+        updateProperties(changedProperties);
+}
diff --git a/src/plugins/sensors/iio-sensor-proxy/iiosensorproxysensorbase.h b/src/plugins/sensors/iio-sensor-proxy/iiosensorproxysensorbase.h
new file mode 100644
index 0000000..f114c3e
--- /dev/null
+++ b/src/plugins/sensors/iio-sensor-proxy/iiosensorproxysensorbase.h
@@ -0,0 +1,70 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Alexander Volkov <a.volkov@rusbitech.ru>
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtSensors module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef IIOSENSORPROXY_SENSORBASE_H
+#define IIOSENSORPROXY_SENSORBASE_H
+
+#include <qsensorbackend.h>
+
+class OrgFreedesktopDBusPropertiesInterface;
+
+class IIOSensorProxySensorBase : public QSensorBackend
+{
+    Q_OBJECT
+public:
+    static char const * const id;
+
+    IIOSensorProxySensorBase(const QString &dbusPath, const QString dbusIface, QSensor *sensor);
+    ~IIOSensorProxySensorBase();
+
+    bool isServiceRunning() const { return m_serviceRunning; }
+    QString serviceName() const;
+
+protected:
+    static quint64 produceTimestamp();
+    virtual void updateProperties(const QVariantMap &changedProperties) = 0;
+
+private slots:
+    void serviceRegistered();
+    void serviceUnregistered();
+    void propertiesChanged(const QString &interface, const QVariantMap &changedProperties,
+                           const QStringList &invalidatedProperties);
+
+private:
+    bool m_serviceRunning;
+    OrgFreedesktopDBusPropertiesInterface *m_propertiesInterface;
+    QString m_dbusInterface;
+};
+
+#endif // IIOSENSORPROXY_SENSORBASE_H
diff --git a/src/plugins/sensors/iio-sensor-proxy/main.cpp b/src/plugins/sensors/iio-sensor-proxy/main.cpp
new file mode 100644
index 0000000..85737b3
--- /dev/null
+++ b/src/plugins/sensors/iio-sensor-proxy/main.cpp
@@ -0,0 +1,70 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Alexander Volkov <a.volkov@rusbitech.ru>
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtSensors module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "iiosensorproxyorientationsensor.h"
+#include "iiosensorproxylightsensor.h"
+
+#include <qsensorplugin.h>
+#include <qsensorbackend.h>
+#include <qsensormanager.h>
+
+#include <QtCore/QFile>
+#include <QtCore/QDebug>
+
+class IIOSensorProxySensorPlugin : public QObject, public QSensorPluginInterface, public QSensorBackendFactory
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID "com.qt-project.Qt.QSensorPluginInterface/1.0" FILE "plugin.json")
+    Q_INTERFACES(QSensorPluginInterface)
+public:
+    void registerSensors()
+    {
+        if (!QSensorManager::isBackendRegistered(QOrientationSensor::type, IIOSensorProxyOrientationSensor::id))
+            QSensorManager::registerBackend(QOrientationSensor::type, IIOSensorProxyOrientationSensor::id, this);
+        if (!QSensorManager::isBackendRegistered(QLightSensor::type, IIOSensorProxyLightSensor::id))
+            QSensorManager::registerBackend(QLightSensor::type, IIOSensorProxyLightSensor::id, this);
+    }
+
+    QSensorBackend *createBackend(QSensor *sensor)
+    {
+        if (sensor->identifier() == IIOSensorProxyOrientationSensor::id)
+            return new IIOSensorProxyOrientationSensor(sensor);
+        else if (sensor->identifier() == IIOSensorProxyLightSensor::id)
+            return new IIOSensorProxyLightSensor(sensor);
+
+        return 0;
+    }
+};
+
+#include "main.moc"
diff --git a/src/plugins/sensors/iio-sensor-proxy/net.hadess.SensorProxy.xml b/src/plugins/sensors/iio-sensor-proxy/net.hadess.SensorProxy.xml
new file mode 100644
index 0000000..94d9869
--- /dev/null
+++ b/src/plugins/sensors/iio-sensor-proxy/net.hadess.SensorProxy.xml
@@ -0,0 +1,24 @@
+<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
+                      "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
+<node>
+  <interface name="net.hadess.SensorProxy">
+    <method name="ClaimAccelerometer">
+    </method>
+    <method name="ReleaseAccelerometer">
+    </method>
+    <method name="ClaimLight">
+    </method>
+    <method name="ReleaseLight">
+    </method>
+    <property type="b" name="HasAccelerometer" access="read">
+    </property>
+    <property type="s" name="AccelerometerOrientation" access="read">
+    </property>
+    <property type="b" name="HasAmbientLight" access="read">
+    </property>
+    <property type="s" name="LightLevelUnit" access="read">
+    </property>
+    <property type="d" name="LightLevel" access="read">
+    </property>
+  </interface>
+</node>
diff --git a/src/plugins/sensors/iio-sensor-proxy/org.freedesktop.DBus.Properties.xml b/src/plugins/sensors/iio-sensor-proxy/org.freedesktop.DBus.Properties.xml
new file mode 100644
index 0000000..5dc94f5
--- /dev/null
+++ b/src/plugins/sensors/iio-sensor-proxy/org.freedesktop.DBus.Properties.xml
@@ -0,0 +1,27 @@
+<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
+    "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
+<node>
+  <interface name="org.freedesktop.DBus.Properties">
+    <method name="Get">
+      <arg name="interface" type="s" direction="in"/>
+      <arg name="name" type="s" direction="in"/>
+      <arg name="value" type="v" direction="out"/>
+    </method>
+    <method name="Set">
+      <arg name="interface" type="s" direction="in"/>
+      <arg name="name" type="s" direction="in"/>
+      <arg name="value" type="v" direction="in"/>
+    </method>
+    <method name="GetAll">
+      <arg name="interface" type="s" direction="in"/>
+      <arg name="properties" type="a{sv}" direction="out"/>
+      <annotation name="org.qtproject.QtDBus.QtTypeName.Out0" value="QVariantMap"/>
+    </method>
+    <signal name="PropertiesChanged">
+      <arg name="interface" type="s"/>
+      <arg name="changed_properties" type="a{sv}"/>
+      <annotation name="org.qtproject.QtDBus.QtTypeName.In1" value="QVariantMap"/>
+      <arg name="invalidated_properties" type="as"/>
+    </signal>
+  </interface>
+</node>
diff --git a/src/plugins/sensors/iio-sensor-proxy/plugin.json b/src/plugins/sensors/iio-sensor-proxy/plugin.json
new file mode 100644
index 0000000..5397f76
--- /dev/null
+++ b/src/plugins/sensors/iio-sensor-proxy/plugin.json
@@ -0,0 +1 @@
+{ "Keys": [ "iio-sensor-proxy" ] }
diff --git a/src/plugins/sensors/sensors.pro b/src/plugins/sensors/sensors.pro
index e232a85..5a860fd 100644
--- a/src/plugins/sensors/sensors.pro
+++ b/src/plugins/sensors/sensors.pro
@@ -21,13 +21,14 @@ qtHaveModule(simulator) {
 }
 
 linux {
-    isEmpty(SENSORS_PLUGINS): SENSORS_PLUGINS = linux generic
+    isEmpty(SENSORS_PLUGINS): SENSORS_PLUGINS = linux iio-sensor-proxy generic
 }
 
 contains(SENSORS_PLUGINS, dummy):SUBDIRS += dummy
 isEmpty(SENSORS_PLUGINS)|contains(SENSORS_PLUGINS, generic):SUBDIRS += generic
 isEmpty(SENSORS_PLUGINS)|contains(SENSORS_PLUGINS, simulator):qtHaveModule(simulator):SUBDIRS += simulator
 isEmpty(SENSORS_PLUGINS)|contains(SENSORS_PLUGINS, linux):linux:SUBDIRS += linux
+isEmpty(SENSORS_PLUGINS)|contains(SENSORS_PLUGINS, iio-sensor-proxy):linux:qtHaveModule(dbus):SUBDIRS += iio-sensor-proxy
 isEmpty(SENSORS_PLUGINS)|contains(SENSORS_PLUGINS, android):android:SUBDIRS += android
 isEmpty(SENSORS_PLUGINS)|contains(SENSORS_PLUGINS, sensorfw):sensorfw:SUBDIRS += sensorfw
 isEmpty(SENSORS_PLUGINS)|contains(SENSORS_PLUGINS, ios):ios:SUBDIRS += ios