add support for HTC Universal device

1 files changed, 721 insertions, 0 deletions

diff --git a/libopie2/opiecore/device/odevice_htc.cpp b/libopie2/opiecore/device/odevice_htc.cpp
new file mode 100644
index 0000000..a40308d
--- a/dev/null
+++ b/libopie2/opiecore/device/odevice_htc.cpp
@@ -0,0 +1,721 @@
+/*
+                             This file is part of the Opie Project
+                             Copyright (C) 2002-2005 The Opie Team <opie-devel@handhelds.org>
+              =.             Copyright (C) 2002-2005 Michael 'Mickey' Lauer <mickey@Vanille.de>
+            .=l.
+           .>+-=
+ _;:,     .>    :=|.         This program is free software; you can
+.> <`_,   >  .   <=          redistribute it and/or  modify it under
+:`=1 )Y*s>-.--   :           the terms of the GNU Library General Public
+.="- .-=="i,     .._         License as published by the Free Software
+ - .   .-<_>     .<>         Foundation; version 2 of the License.
+     ._= =}       :
+    .%`+i>       _;_.
+    .i_,=:_.      -<s.       This program is distributed in the hope that
+     +  .  -:.       =       it will be useful,  but WITHOUT ANY WARRANTY;
+    : ..    .:,     . . .    without even the implied warranty of
+    =_        +     =;=|`    MERCHANTABILITY or FITNESS FOR A
+  _.=:.       :    :=>`:     PARTICULAR PURPOSE. See the GNU
+..}^=.=       =       ;      Library General Public License for more
+++=   -.     .`     .:       details.
+ :     =  ...= . :.=-
+ -.   .:....=;==+<;          You should have received a copy of the GNU
+  -_. . .   )=.  =           Library General Public License along with
+    --        :-=`           this library; see the file COPYING.LIB.
+                             If not, write to the Free Software Foundation,
+                             Inc., 59 Temple Place - Suite 330,
+                             Boston, MA 02111-1307, USA.
+*/
+
+#include "odevice_htc.h"
+
+/* OPIE */
+#include <opie2/oinputsystem.h>
+#include <opie2/oresource.h>
+
+#include <qpe/config.h>
+#include <qpe/sound.h>
+
+/* QT */
+#include <qapplication.h>
+#include <qfile.h>
+#include <qtextstream.h>
+#include <qwindowsystem_qws.h>
+#include <qcopchannel_qws.h>
+
+/* STD */
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <math.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <unistd.h>
+#ifndef QT_NO_SOUND
+#include <linux/soundcard.h>
+#endif
+
+using namespace Opie::Core;
+using namespace Opie::Core::Internal;
+
+struct htc_button htc_buttons [] = {
+    { Qt::Key_F9, QT_TRANSLATE_NOOP("Button", "Calendar Button"),
+    "devicebuttons/z_calendar",
+    "datebook", "nextView()",
+    "today", "raise()" },
+    { Qt::Key_F10, QT_TRANSLATE_NOOP("Button", "Contacts Button"),
+    "devicebuttons/z_contact",
+    "addressbook", "raise()",
+    "addressbook", "beamBusinessCard()" },
+    { Qt::Key_F12, QT_TRANSLATE_NOOP("Button", "Home Button"),
+    "devicebuttons/z_home",
+    "QPE/Launcher", "home()",
+    "buttonsettings", "raise()" },
+    { Qt::Key_F11, QT_TRANSLATE_NOOP("Button", "Menu Button"),
+    "devicebuttons/z_menu",
+    "QPE/TaskBar", "toggleMenu()",
+    "QPE/TaskBar", "toggleStartMenu()" },
+    { Qt::Key_F13, QT_TRANSLATE_NOOP("Button", "Mail Button"),
+    "devicebuttons/z_mail",
+    "opiemail", "raise()",
+    "opiemail", "newMail()" },
+};
+
+struct htc_button htc_buttons_universal [] = {
+    { Qt::Key_F9, QT_TRANSLATE_NOOP("Button", "Calendar Button"),
+    "devicebuttons/z_calendar",
+    "datebook", "nextView()",
+    "today", "raise()" },
+    { Qt::Key_F10, QT_TRANSLATE_NOOP("Button", "Contacts Button"),
+    "devicebuttons/z_contact",
+    "addressbook", "raise()",
+    "addressbook", "beamBusinessCard()" },
+    { Qt::Key_F12, QT_TRANSLATE_NOOP("Button", "Home Button"),
+    "devicebuttons/z_home",
+    "QPE/Launcher", "home()",
+    "buttonsettings", "raise()" },
+    { Qt::Key_F11, QT_TRANSLATE_NOOP("Button", "Menu Button"),
+    "devicebuttons/z_menu",
+    "QPE/TaskBar", "toggleMenu()",
+    "QPE/TaskBar", "toggleStartMenu()" },
+    { Qt::Key_F13, QT_TRANSLATE_NOOP("Button", "Mail Button"),
+    "devicebuttons/z_mail",
+    "opiemail", "raise()",
+    "opiemail", "newMail()" },
+
+    { Qt::Key_F15, QT_TRANSLATE_NOOP("Button", "Hinge1"),
+    "devicebuttons/z_hinge1",
+    "QPE/Rotation", "rotateDefault()",0},
+    { Qt::Key_F16, QT_TRANSLATE_NOOP("Button", "Hinge2"),
+    "devicebuttons/z_hinge2",
+    "QPE/Rotation", "rotateDefault()",0},
+    { Qt::Key_F17, QT_TRANSLATE_NOOP("Button", "Hinge3"),
+    "devicebuttons/z_hinge3",
+    "QPE/Rotation", "rotateDefault()",0},
+};
+
+struct htc_button htc_buttons_6000 [] = {
+    { Qt::Key_F9, QT_TRANSLATE_NOOP("Button", "Calendar Button"),
+    "devicebuttons/z_calendar",
+    "datebook", "nextView()",
+    "today", "raise()" },
+    { Qt::Key_F10, QT_TRANSLATE_NOOP("Button", "Contacts Button"),
+    "devicebuttons/z_contact",
+    "addressbook", "raise()",
+    "addressbook", "beamBusinessCard()" },
+    { Qt::Key_F12, QT_TRANSLATE_NOOP("Button", "Home Button"),
+    "devicebuttons/z_home",
+    "QPE/Launcher", "home()",
+    "buttonsettings", "raise()" },
+    { Qt::Key_F11, QT_TRANSLATE_NOOP("Button", "Menu Button"),
+    "devicebuttons/z_menu",
+    "QPE/TaskBar", "toggleMenu()",
+    "QPE/TaskBar", "toggleStartMenu()" },
+    { Qt::Key_F13, QT_TRANSLATE_NOOP("Button", "Mail Button"),
+    "devicebuttons/z_mail",
+    "opiemail", "raise()",
+    "opiemail", "newMail()" },
+    { Qt::Key_F15, QT_TRANSLATE_NOOP("Button", "Rotate Button"),
+    "devicebuttons/z_rotate",
+    0,
+    "QPE/Rotation", "rotateDefault()" },
+    { Qt::Key_F24, QT_TRANSLATE_NOOP("Button", "Record Button"),
+    "devicebuttons/z_hinge3",
+    "QPE/VMemo", "toggleRecord()",
+    "sound", "raise()" },
+};
+
+// FIXME This gets unnecessary complicated. We should think about splitting the HTC
+//       class up into individual classes. We would need three classes
+//
+//       HTC-Universal  (PXA-model w/ 640x480 lcd, for Universal)
+
+void HTC::init(const QString& cpu_info)
+{
+    qDebug( "HTC::init()" );
+    // Set the time to wait until the system is really suspended
+    // the delta between apm --suspend and sleeping
+    setAPMTimeOut( 15000 );
+
+    // generic distribution code already scanned /etc/issue at that point -
+    // embedix releases contain "Embedix <version> | Linux for Embedded Devices"
+    if ( d->m_sysverstr.contains( "embedix", false ) )
+    {
+        d->m_vendorstr = "HTC";
+        d->m_vendor = Vendor_HTC;
+        d->m_systemstr = "OpenEmbedded";
+        d->m_system = System_OpenEmbedded;
+        m_embedix = true;
+    }
+    else
+    {
+        d->m_vendorstr = "Xanadux Team";
+        d->m_systemstr = "Familiar";
+        d->m_system = System_Familiar;
+        // sysver already gathered
+
+        // OpenHTC sometimes uses the 2.4 (embedix) kernel, check if this is one
+        FILE *uname = popen("uname -r", "r");
+        QFile f;
+        QString line;
+        if ( f.open(IO_ReadOnly, uname) ) {
+            QTextStream ts ( &f );
+            line = ts.readLine();
+            m_embedix = line.startsWith( "2.4." );
+            f.close();
+        }
+        pclose(uname);
+    }
+
+    // check the HTC model
+    QString model;
+    int loc = cpu_info.find( ":" );
+    if ( loc != -1 )
+        model = cpu_info.mid( loc+2 ).simplifyWhiteSpace();
+    else
+        model = cpu_info;
+
+    if ( model == "HTC Universal" ) {
+        d->m_model = Model_HTC_Universal;
+        d->m_modelstr = "HTC Universal";
+    } else {
+        d->m_model = Model_HTC_Universal;
+        d->m_modelstr = "Unknown HTC";
+    }
+
+    // set path to backlight device in kernel 2.6
+    switch ( d->m_model )
+    {
+        case Model_HTC_Universal:
+        default:
+//            m_backlightdev = "/sys/class/backlight/corgi-bl/";
+            m_backlightdev = "/sys/class/backlight/pxafb/";
+    }
+
+    // set initial rotation
+    switch( d->m_model )
+    {
+        case Model_HTC_Universal:
+            initHingeSensor();
+            d->m_rotation = rotation();
+            d->m_direction = direction();
+            break;
+        default:
+            d->m_rotation = Rot270;
+    }
+
+    // set default qte driver
+    switch( d->m_model )
+    {
+        default:
+            d->m_qteDriver = "Transformed";
+    }
+
+    m_leds[0] = Led_Off;
+
+    if ( m_embedix )
+        qDebug( "HTC::init() - Using the 2.4 Embedix HAL on a %s", (const char*) d->m_modelstr );
+    else
+        qDebug( "HTC::init() - Using the 2.6 Xanadux HAL on a %s", (const char*) d->m_modelstr );
+}
+
+void HTC::initButtons()
+{
+    qDebug( "HTC::initButtons()" );
+    if ( d->m_buttons )
+        return;
+
+    d->m_buttons = new QValueList <ODeviceButton>;
+
+    struct htc_button * phtc_buttons;
+    int buttoncount;
+    switch ( d->m_model )
+    {
+        case Model_HTC_Universal:
+            if ( isQWS( ) )
+            {
+                addPreHandler(this);
+            }
+            phtc_buttons = htc_buttons_universal;
+            buttoncount = ARRAY_SIZE(htc_buttons_universal);
+            break;
+        default:
+            phtc_buttons = htc_buttons;
+            buttoncount = ARRAY_SIZE(htc_buttons);
+            break;
+    }
+
+    for ( int i = 0; i < buttoncount; i++ ) {
+        struct htc_button *zb = phtc_buttons + i;
+        ODeviceButton b;
+
+        b.setKeycode( zb->code );
+        b.setUserText( QObject::tr( "Button", zb->utext ));
+        b.setPixmap( OResource::loadPixmap( zb->pix ));
+        b.setFactoryPresetPressedAction( OQCopMessage( makeChannel ( zb->fpressedservice ), zb->fpressedaction ));
+        b.setFactoryPresetHeldAction( OQCopMessage( makeChannel ( zb->fheldservice ), zb->fheldaction ));
+        d->m_buttons->append( b );
+    }
+
+    reloadButtonMapping();
+}
+
+
+
+typedef struct sharp_led_status {
+    int which;   /* select which LED status is wanted. */
+    int status;  /* set new led status if you call SHARP_LED_SETSTATUS */
+} sharp_led_status;
+
+void HTC::buzzer( int sound )
+{
+#ifndef QT_NO_SOUND
+    Sound *snd = 0;
+
+    // All devices except SL5500 have a DSP device
+    if ( d->m_model == Model_HTC_Universal ) {
+
+        switch ( sound ){
+        case SHARP_BUZ_TOUCHSOUND: {
+            static Sound touch_sound("touchsound");
+            snd = &touch_sound;
+    }
+            break;
+        case SHARP_BUZ_KEYSOUND: {
+            static Sound key_sound( "keysound" );
+            snd = &key_sound;
+    }
+            break;
+        case SHARP_BUZ_SCHEDULE_ALARM:
+        default: {
+            static Sound alarm_sound("alarm");
+            snd = &alarm_sound;
+    }
+            break;
+        }
+    }
+
+    // If a soundname is defined, we expect that this device has
+    // sound capabilities.. Otherwise we expect to have the buzzer
+    // device..
+    if ( snd && snd->isFinished() ){
+        changeMixerForAlarm( 0, "/dev/sound/mixer", snd );
+        snd->play();
+    } else if( !snd ) {
+        int fd = ::open ( "/dev/sharp_buz", O_WRONLY|O_NONBLOCK );
+
+        if ( fd >= 0 ) {
+            ::ioctl ( fd, SHARP_BUZZER_MAKESOUND, sound );
+            ::close ( fd );
+        }
+
+    }
+#endif
+}
+
+
+void HTC::playAlarmSound()
+{
+    buzzer( SHARP_BUZ_SCHEDULE_ALARM );
+}
+
+void HTC::playTouchSound()
+{
+    buzzer( SHARP_BUZ_TOUCHSOUND );
+}
+
+void HTC::playKeySound()
+{
+    buzzer( SHARP_BUZ_KEYSOUND );
+}
+
+
+QValueList <OLed> HTC::ledList() const
+{
+    QValueList <OLed> vl;
+    vl << Led_Mail;
+    return vl;
+}
+
+QValueList <OLedState> HTC::ledStateList( OLed l ) const
+{
+    QValueList <OLedState> vl;
+
+    if ( l == Led_Mail )
+        vl << Led_Off << Led_On << Led_BlinkSlow;
+    return vl;
+}
+
+OLedState HTC::ledState( OLed which ) const
+{
+    if ( which == Led_Mail )
+        return m_leds [0];
+    else
+        return Led_Off;
+}
+
+bool HTC::setLedState( OLed which, OLedState st )
+{
+     // Currently not supported on non_embedix kernels
+    if (!m_embedix)
+    {
+        qDebug( "HTC::setLedState: ODevice handling for non-embedix kernels not yet implemented" );
+        return false;
+    }
+
+    static int fd = ::open ( "/dev/sharp_led", O_RDWR|O_NONBLOCK );
+
+    if ( which == Led_Mail ) {
+        if ( fd >= 0 ) {
+            struct sharp_led_status leds;
+            ::memset ( &leds, 0, sizeof( leds ));
+            leds. which = SHARP_LED_MAIL_EXISTS;
+            bool ok = true;
+
+            switch ( st ) {
+                case Led_Off      : leds. status = LED_MAIL_NO_UNREAD_MAIL; break;
+                case Led_On       : leds. status = LED_MAIL_NEWMAIL_EXISTS; break;
+                case Led_BlinkSlow: leds. status = LED_MAIL_UNREAD_MAIL_EX; break;
+                default            : ok = false;
+            }
+
+            if ( ok && ( ::ioctl ( fd, SHARP_LED_SETSTATUS, &leds ) >= 0 )) {
+                m_leds [0] = st;
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+int HTC::displayBrightnessResolution() const
+{
+/* MV */
+        return 16;
+
+    int res = 1;
+    if (m_embedix)
+    {
+        int fd = ::open( SHARP_FL_IOCTL_DEVICE, O_RDWR|O_NONBLOCK );
+        if ( fd )
+        {
+            int value = ::ioctl( fd, SHARP_FL_IOCTL_GET_STEP, 0 );
+            ::close( fd );
+            return value ? value : res;
+        }
+    }
+    else
+    {
+        int fd = ::open( m_backlightdev + "max_brightness", O_RDONLY|O_NONBLOCK );
+        if ( fd )
+        {
+            char buf[100];
+            if ( ::read( fd, &buf[0], sizeof buf ) ) ::sscanf( &buf[0], "%d", &res );
+            ::close( fd );
+        }
+    }
+    return res;
+}
+
+bool HTC::setDisplayBrightness( int bright )
+{
+/* MV */
+        return false;
+
+    //qDebug( "HTC::setDisplayBrightness( %d )", bright );
+    bool res = false;
+
+    if ( bright > 255 ) bright = 255;
+    if ( bright < 0 ) bright = 0;
+
+    int numberOfSteps = displayBrightnessResolution();
+    int val = ( bright == 1 ) ? 1 : ( bright * numberOfSteps ) / 255;
+
+    if ( m_embedix )
+    {
+        int fd = ::open( SHARP_FL_IOCTL_DEVICE, O_WRONLY|O_NONBLOCK );
+        if ( fd )
+        {
+            res = ( ::ioctl( fd, SHARP_FL_IOCTL_STEP_CONTRAST, val ) == 0 );
+            ::close( fd );
+        }
+    }
+    else
+    {
+        int fd = ::open( m_backlightdev + "brightness", O_WRONLY|O_NONBLOCK );
+        if ( fd )
+        {
+            char buf[100];
+            int len = ::snprintf( &buf[0], sizeof buf, "%d", val );
+            res = ( ::write( fd, &buf[0], len ) == 0 );
+            ::close( fd );
+        }
+    }
+    return res;
+}
+
+bool HTC::setDisplayStatus( bool on )
+{
+/* MV */
+        return false;
+
+    bool res = false;
+    if ( m_embedix )
+    {
+        int fd = ::open( SHARP_FL_IOCTL_DEVICE, O_WRONLY|O_NONBLOCK );
+        if ( fd )
+        {
+            int ioctlnum = on ? SHARP_FL_IOCTL_ON : SHARP_FL_IOCTL_OFF;
+            res = ( ::ioctl ( fd, ioctlnum, 0 ) == 0 );
+            ::close ( fd );
+        }
+    }
+    else
+    {
+        int fd = ::open( m_backlightdev + "power", O_WRONLY|O_NONBLOCK );
+        if ( fd )
+        {
+            char buf[10];
+            buf[0] = on ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
+            buf[1] = '\0';
+            res = ( ::write( fd, &buf[0], 2 ) == 0 );
+            ::close( fd );
+        }
+    }
+    return res;
+}
+
+Transformation HTC::rotation() const
+{
+    qDebug( "HTC::rotation()" );
+    Transformation rot;
+
+    switch ( d->m_model ) {
+        case Model_HTC_Universal:
+        {
+            OHingeStatus hs = readHingeSensor();
+            qDebug( "HTC::rotation() - hinge sensor = %d", (int) hs );
+            if ( hs == CASE_PORTRAIT ) rot = Rot0;
+            else if ( hs == CASE_UNKNOWN ) rot = Rot270;
+            else rot = Rot270;
+        }
+        break;
+    }
+
+    qDebug( "HTC::rotation() - returning '%d'", rot );
+    return rot;
+}
+ODirection HTC::direction() const
+{
+    ODirection dir;
+
+    switch ( d->m_model ) {
+        case Model_HTC_Universal: {
+                OHingeStatus hs = readHingeSensor();
+                if ( hs == CASE_PORTRAIT ) dir = CCW;
+                else if ( hs == CASE_UNKNOWN ) dir = CCW;
+                else dir = CW;
+            }
+            break;
+        default: dir = d->m_direction;
+            break;
+    }
+    return dir;
+
+}
+
+bool HTC::hasHingeSensor() const
+{
+    return d->m_model == Model_HTC_Universal;
+}
+
+OHingeStatus HTC::readHingeSensor() const
+{
+    if (m_embedix)
+    {
+        int handle = ::open("/dev/apm_bios", O_RDWR|O_NONBLOCK);
+        if (handle == -1)
+        {
+            qWarning("HTC::readHingeSensor() - failed (%s)", "unknown reason" ); //FIXME: use strerror
+            return CASE_UNKNOWN;
+        }
+        else
+        {
+            int retval = ::ioctl(handle, SHARP_IOCTL_GET_ROTATION);
+            ::close (handle);
+            if ( retval == CASE_CLOSED || retval == CASE_PORTRAIT || retval == CASE_LANDSCAPE )
+            {
+                qDebug( "HTC::readHingeSensor() - result = %d", retval );
+                return static_cast<OHingeStatus>( retval );
+            }
+            else
+            {
+                qWarning("HTC::readHingeSensor() - couldn't compute hinge status!" );
+                return CASE_UNKNOWN;
+            }
+        }
+    }
+    else
+    {
+        /*
+         * The HTC Universal keyboard is event source 1 in kernel 2.6.
+         * Hinge status is reported via Input System Switchs 0 and 1 like that:
+         *
+         * -------------------------
+         * | SW0 | SW1 |    CASE   |
+         * |-----|-----|-----------|
+         * |  0     0    Unknown   |
+         * |  1     0    Portrait  |
+         * |  0     1    Closed    |
+         * |  1     1    Landscape |
+         * -------------------------
+         */
+        OInputDevice* keyboard = OInputSystem::instance()->device( "event1" );
+        bool switch0 = true;
+        bool switch1 = false;
+        if ( keyboard )
+        {
+            switch0 = keyboard->isHeld( OInputDevice::Switch0 );
+            switch1 = keyboard->isHeld( OInputDevice::Switch1 );
+        }
+        if ( switch0 )
+        {
+            return switch1 ? CASE_LANDSCAPE : CASE_PORTRAIT;
+        }
+        else
+        {
+            return switch1 ? CASE_CLOSED : CASE_UNKNOWN;
+        }
+    }
+}
+
+void HTC::initHingeSensor()
+{
+    if ( m_embedix ) return;
+
+    m_hinge.setName( "/dev/input/event1" );
+    if ( !m_hinge.open( IO_ReadOnly ) )
+    {
+        qWarning( "HTC::init() - Couldn't open /dev/input/event1 for read (%s)", strerror( errno ) );
+        return;
+    }
+
+    QSocketNotifier* sn = new QSocketNotifier( m_hinge.handle(), QSocketNotifier::Read, this );
+    QObject::connect( sn, SIGNAL(activated(int)), this, SLOT(hingeSensorTriggered()) );
+
+    qDebug( "HTC::init() - Hinge Sensor Initialization successfully completed" );
+}
+
+void HTC::hingeSensorTriggered()
+{
+    qDebug( "HTC::hingeSensorTriggered() - got event" );
+    struct input_event e;
+    if ( ::read( m_hinge.handle(), &e, sizeof e ) > 0 )
+    {
+        qDebug( "HTC::hingeSensorTriggered() - event has type %d, code %d, value %d", e.type, e.code, e.value );
+        if ( e.type != EV_SW ) return;
+        if ( readHingeSensor() != CASE_UNKNOWN )
+        {
+            qDebug( "HTC::hingeSensorTriggered() - got valid switch event, calling rotateDefault()" );
+            QCopChannel::send( "QPE/Rotation", "rotateDefault()" );
+        }
+    }
+}
+
+void HTC::systemMessage( const QCString &msg, const QByteArray & )
+{
+    if ( msg == "deviceButtonMappingChanged()" ) {
+        reloadButtonMapping();
+    }
+}
+
+/*
+ * Take code from iPAQ device.
+ * That way we switch the cursor directions depending on status of hinge sensor, eg. hardware direction.
+ * I hope that is ok - Alwin
+ */
+bool HTC::filter ( int /*unicode*/, int keycode, int modifiers, bool isPress, bool autoRepeat )
+{
+    int newkeycode = keycode;
+
+    if ( !hasHingeSensor() ) return false;
+
+    /* map cursor keys depending on the hinge status */
+    switch ( keycode ) {
+        // Rotate cursor keys
+        case Key_Left :
+        case Key_Right:
+        case Key_Up   :
+        case Key_Down :
+        {
+            if (rotation()==Rot90) {
+                newkeycode = Key_Left + ( keycode - Key_Left + 3 ) % 4;
+            }
+        }
+        break;
+
+    }
+    if (newkeycode!=keycode) {
+        if ( newkeycode != Key_unknown ) {
+            QWSServer::sendKeyEvent ( -1, newkeycode, modifiers, isPress, autoRepeat );
+        }
+        return true;
+    }
+    return false;
+}
+
+bool HTC::suspend() {
+
+/* MV */
+        return false;
+
+    if ( !isQWS( ) ) // only qwsserver is allowed to suspend
+        return false;
+
+    bool res = false;
+    QCopChannel::send( "QPE/System", "aboutToSuspend()" );
+
+    struct timeval tvs, tvn;
+    ::gettimeofday ( &tvs, 0 );
+
+    ::sync(); // flush fs caches
+    res = ( ::system ( "apm --suspend" ) == 0 );
+
+    // This is needed because some apm implementations are asynchronous and we
+    // can not be sure when exactly the device is really suspended
+    // This can be deleted as soon as a stable familiar with a synchronous apm implementation exists.
+    // on non embedix eg. 2.6 kernel line apm is synchronous so we don't need it here.
+
+    if ( res && m_embedix) {
+        do { // wait at most 1.5 sec: either suspend didn't work or the device resumed
+            ::usleep ( 200 * 1000 );
+            ::gettimeofday ( &tvn, 0 );
+        } while ((( tvn. tv_sec - tvs. tv_sec ) * 1000 + ( tvn. tv_usec - tvs. tv_usec ) / 1000 ) < m_timeOut );
+    }
+
+    QCopChannel::send( "QPE/System", "returnFromSuspend()" );
+
+    return res;
+}