workaround a quirk in the linux kernel semantics

echo 1 >power actually powers off a device *cough*

1 files changed, 1 insertions, 1 deletions

diff --git a/libopie2/opiecore/device/odevice_zaurus.cpp b/libopie2/opiecore/device/odevice_zaurus.cpp
index 269f6c9..d3ab63a 100644
--- a/libopie2/opiecore/device/odevice_zaurus.cpp
+++ b/libopie2/opiecore/device/odevice_zaurus.cpp
@@ -1,642 +1,642 @@
 /*
                              This file is part of the Opie Project
                              Copyright (C) The Opie Team <opie-devel@handhelds.org>
               =.             Copyright (C) 2003-2005 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; either version 2 of the License,
      ._= =}       :          or (at your option) any later version.
     .%`+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_zaurus.h"
 
 /* QT */
 #include <qapplication.h>
 #include <qfile.h>
 #include <qtextstream.h>
 #include <qwindowsystem_qws.h>
 
 /* OPIE */
 #include <qpe/config.h>
 #include <qpe/resource.h>
 #include <qpe/sound.h>
 #include <qpe/qcopenvelope_qws.h>
 
 /* STD */
 #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 z_button z_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 z_button z_buttons_c700 [] = {
     { 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_F14, QT_TRANSLATE_NOOP("Button", "Display Rotate"),
     "devicebuttons/z_hinge",
     "QPE/Rotation", "rotateDefault()",
     "QPE/Dummy", "doNothing()" },
 };
 
 // FIXME This gets unnecessary complicated. We should think about splitting the Zaurus
 //       class up into individual classes. We need three classes
 //
 //       Zaurus-Collie (SA-model  w/ 320x240 lcd, for SL5500 and SL5000)
 //       Zaurus-Poodle (PXA-model w/ 320x240 lcd, for SL5600)
 //       Zaurus-Corgi  (PXA-model w/ 640x480 lcd, for C700, C750, C760, C860, C3000)
 //       Zaurus-Tosa   (PXA-model w/ 480x640 lcd, for SL6000)
 //
 //       Only question right now is: Do we really need to do it? Because as soon
 //       as the OpenZaurus kernel is ready, there will be a unified interface for all
 //       Zaurus models (concerning apm, backlight, buttons, etc.)
 //
 //       Comments? - mickeyl.
 
 void Zaurus::init(const QString& cpu_info)
 {
     // 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 = "Sharp";
         d->m_vendor = Vendor_Sharp;
         d->m_systemstr = "Zaurus";
         d->m_system = System_Zaurus;
         m_embedix = true;
     }
     else
     {
         d->m_vendorstr = "OpenZaurus Team";
         d->m_systemstr = "OpenZaurus";
         d->m_system = System_OpenZaurus;
         // sysver already gathered
 
         // OpenZaurus sometimes uses the 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();
             int loc = line. find ( "embedix" );
             if ( loc != -1 )
                 m_embedix = true;
             else
                 m_embedix = false;
             f.close();
         }
         pclose(uname);
     }
 
     // check the Zaurus model
     QString model;
     int loc = cpu_info.find( ":" );
     if ( loc != -1 )
         model = cpu_info.mid( loc+2 ).simplifyWhiteSpace();
     else
         model = cpu_info;
 
     if ( model == "SHARP Corgi" ) {
         d->m_model = Model_Zaurus_SLC7x0;
         d->m_modelstr = "Zaurus SL-C700";
     } else if ( model == "SHARP Shepherd" ) {
         d->m_model = Model_Zaurus_SLC7x0;
         d->m_modelstr = "Zaurus SL-C750";
     } else if ( model == "SHARP Husky" ) {
         d->m_model = Model_Zaurus_SLC7x0;
         d->m_modelstr = "Zaurus SL-C760 or SL-C860";
     } else if ( model == "SHARP Boxer" ) {
         d->m_model = Model_Zaurus_SLC7x0;
         d->m_modelstr = "Zaurus SL-C760 or SL-C860";
     } else if ( model == "SHARP Poodle" ) {
         d->m_model = Model_Zaurus_SLB600;
         d->m_modelstr = "Zaurus SL-B500 or SL-5600";
     } else if ( model == "Sharp-Collie" || model == "Collie" ) {
         d->m_model = Model_Zaurus_SL5500;
         d->m_modelstr = "Zaurus SL-5500 or SL-5000d";
     } else if ( model == "SHARP Tosa" ) {
         d->m_model = Model_Zaurus_SL6000;
         d->m_modelstr = "Zaurus SL-6000";
     } else if ( model == "SHARP Spitz" ) {
         d->m_model = Model_Zaurus_SLC3000;
         d->m_modelstr = "Zaurus SL-C3000";
     } else {
         d->m_model = Model_Zaurus_SL5500;
         d->m_modelstr = "Unknown Zaurus";
     }
 
     // set initial rotation
     switch( d->m_model ) {
         case Model_Zaurus_SL6000: // fallthrough
         case Model_Zaurus_SLA300:
             d->m_rotation = Rot0;
             break;
         case Model_Zaurus_SLC3000: // fallthrough
         case Model_Zaurus_SLC7x0:
             d->m_rotation = rotation();
             d->m_direction = direction();
             break;
         case Model_Zaurus_SLB600: // fallthrough
         case Model_Zaurus_SL5000: // fallthrough
         case Model_Zaurus_SL5500: // fallthrough
         default:
             d->m_rotation = Rot270;
             break;
     }
     m_leds[0] = Led_Off;
 
     if ( m_embedix )
         qDebug( "Zaurus::init() - Using the Embedix HAL on a %s", (const char*) d->m_modelstr );
     else
         qDebug( "Zaurus::init() - Using the OpenZaurus HAL on a %s", (const char*) d->m_modelstr );
 }
 
 void Zaurus::initButtons()
 {
     if ( d->m_buttons )
         return;
 
     d->m_buttons = new QValueList <ODeviceButton>;
 
     struct z_button * pz_buttons;
     int buttoncount;
     switch ( d->m_model ) {
         case Model_Zaurus_SLC3000: // fallthrough
         case Model_Zaurus_SLC7x0:
             pz_buttons = z_buttons_c700;
             buttoncount = ARRAY_SIZE(z_buttons_c700);
             break;
         default:
             pz_buttons = z_buttons;
             buttoncount = ARRAY_SIZE(z_buttons);
             break;
     }
 
     for ( int i = 0; i < buttoncount; i++ ) {
         struct z_button *zb = pz_buttons + i;
         ODeviceButton b;
 
         b.setKeycode( zb->code );
         b.setUserText( QObject::tr( "Button", zb->utext ));
         b.setPixmap( Resource::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 Zaurus::buzzer( int sound )
 {
 #ifndef QT_NO_SOUND
     Sound *snd = 0;
 
     // All devices except SL5500 have a DSP device
     if ( d->m_model != Model_Zaurus_SL5000
       && d->m_model != Model_Zaurus_SL5500 ) {
 
         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 Zaurus::playAlarmSound()
 {
     buzzer( SHARP_BUZ_SCHEDULE_ALARM );
 }
 
 void Zaurus::playTouchSound()
 {
     buzzer( SHARP_BUZ_TOUCHSOUND );
 }
 
 void Zaurus::playKeySound()
 {
     buzzer( SHARP_BUZ_KEYSOUND );
 }
 
 
 QValueList <OLed> Zaurus::ledList() const
 {
     QValueList <OLed> vl;
     vl << Led_Mail;
     return vl;
 }
 
 QValueList <OLedState> Zaurus::ledStateList( OLed l ) const
 {
     QValueList <OLedState> vl;
 
     if ( l == Led_Mail )
         vl << Led_Off << Led_On << Led_BlinkSlow;
     return vl;
 }
 
 OLedState Zaurus::ledState( OLed which ) const
 {
     if ( which == Led_Mail )
         return m_leds [0];
     else
         return Led_Off;
 }
 
 bool Zaurus::setLedState( OLed which, OLedState st )
 {
      // Currently not supported on non_embedix kernels
     if (!m_embedix)
     {
         qDebug( "Zaurus::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;
 }
 
 bool Zaurus::setSoftSuspend ( bool soft )
 {
     if (!m_embedix) {
         /* non-Embedix kernels dont have kernel autosuspend */
         return ODevice::setSoftSuspend( soft );
     }
 
     bool res = false;
     int fd;
 
     if ((( fd = ::open ( "/dev/apm_bios", O_RDWR )) >= 0 ) ||
         (( fd = ::open ( "/dev/misc/apm_bios",O_RDWR )) >= 0 )) {
 
         int sources = ::ioctl( fd, APM_IOCGEVTSRC, 0 ); // get current event sources
 
         if ( sources >= 0 ) {
             if ( soft )
                 sources &= ~APM_EVT_POWER_BUTTON;
             else
                 sources |= APM_EVT_POWER_BUTTON;
 
             if ( ::ioctl( fd, APM_IOCSEVTSRC, sources ) >= 0 ) // set new event sources
                 res = true;
             else
                 perror ( "APM_IOCGEVTSRC" );
         }
         else
             perror ( "APM_IOCGEVTSRC" );
 
         ::close( fd );
     }
     else
         perror( "/dev/apm_bios or /dev/misc/apm_bios" );
 
     return res;
 }
 
 int Zaurus::displayBrightnessResolution() const
 {
     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( "/sys/class/backlight/corgi-bl/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 Zaurus::setDisplayBrightness( int bright )
 {
     //qDebug( "Zaurus::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( "/sys/class/backlight/corgi-bl/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 Zaurus::setDisplayStatus( bool on )
 {
     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( "/sys/class/backlight/corgi-bl/power", O_WRONLY|O_NONBLOCK );
         if ( fd )
         {
             char buf[10];
-            buf[0] = on ? '0' : '1';
+            buf[0] = on ? '1' : '0';
             buf[1] = '\0';
             res = ( ::write( fd, &buf[0], 2 ) == 0 );
             ::close( fd );
         }
     }
     return res;
 }
 
 bool Zaurus::suspend()
 {
     qDebug("ODevice::suspend");
     if ( !isQWS( ) ) // only qwsserver is allowed to suspend
         return false;
 
     if ( d->m_model == Model_Unknown ) // better don't suspend in qvfb / on unkown devices
         return false;
 
     bool res = false;
     ODevice::sendSuspendmsg();
 
     struct timeval tvs, tvn;
     ::gettimeofday ( &tvs, 0 );
 
     ::sync(); // flush fs caches
     res = ( ::system ( "apm --suspend" ) == 0 );
 
     // This is needed because the apm implementation is asynchronous and we
     // can not be sure when exactly the device is really suspended
     if ( res ) {
         do { // Yes, wait 15 seconds. This APM sucks big time.
             ::usleep ( 200 * 1000 );
             ::gettimeofday ( &tvn, 0 );
         } while ((( tvn. tv_sec - tvs. tv_sec ) * 1000 + ( tvn. tv_usec - tvs. tv_usec ) / 1000 ) < 15000 );
     }
 
     QCopEnvelope ( "QPE/Rotation", "rotateDefault()" );
     return res;
 }
 
 
 Transformation Zaurus::rotation() const
 {
     Transformation rot;
     int handle = 0;
     int retval = 0;
 
     switch ( d->m_model ) {
         case Model_Zaurus_SLC3000: // fallthrough
         case Model_Zaurus_SLC7x0:
             handle = ::open("/dev/apm_bios", O_RDWR|O_NONBLOCK);
             if (handle == -1) {
                 return Rot270;
             } else {
                 retval = ::ioctl(handle, SHARP_IOCTL_GET_ROTATION);
                 ::close (handle);
 
                 if (retval == 2 )
                     rot = Rot0;
                 else
                     rot = Rot270;
             }
             break;
         case Model_Zaurus_SL6000:
         case Model_Zaurus_SLB600:
         case Model_Zaurus_SLA300:
         case Model_Zaurus_SL5500:
         case Model_Zaurus_SL5000:
         default:
             rot = d->m_rotation;
             break;
     }
 
     return rot;
 }
 ODirection Zaurus::direction() const
 {
     ODirection dir;
     int handle = 0;
     int retval = 0;
     switch ( d->m_model ) {
         case Model_Zaurus_SLC3000: // fallthrough
         case Model_Zaurus_SLC7x0:
             handle = ::open( "/dev/apm_bios", O_RDWR|O_NONBLOCK );
             if (handle == -1) {
                 dir = CW;
             } else {
                 retval = ::ioctl( handle, SHARP_IOCTL_GET_ROTATION );
                 ::close (handle);
                 if (retval == 2 )
                     dir = CCW;
                 else
                     dir = CW;
             }
             break;
         case Model_Zaurus_SL6000:
         case Model_Zaurus_SLA300:
         case Model_Zaurus_SLB600:
         case Model_Zaurus_SL5500:
         case Model_Zaurus_SL5000:
         default: dir = d->m_direction;
             break;
     }
     return dir;
 
 }
 
 bool Zaurus::hasHingeSensor() const
 {
     return d->m_model == Model_Zaurus_SLC7x0 || d->m_model == Model_Zaurus_SLC3000;
 }
 
 OHingeStatus Zaurus::readHingeSensor()
 {
     if (m_embedix)
     {
         int handle = ::open("/dev/apm_bios", O_RDWR|O_NONBLOCK);
         if (handle == -1)
         {
             qWarning("Zaurus::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( "Zaurus::readHingeSensor() - result = %d", retval );
                 return static_cast<OHingeStatus>( retval );
             }
             else
             {
                 qWarning("Zaurus::readHingeSensor() - couldn't compute hinge status!" );
                 return CASE_UNKNOWN;
             }
         }
     }
     else
     {
         qDebug( "Zaurus::readHingeSensor: ODevice handling for non-embedix kernels not yet implemented" );
         return CASE_UNKNOWN;
     }
 }