changed access method for lcd sys params of ipaq h191x and mypal a716 based on Slavek Banko patch

1 files changed, 34 insertions, 21 deletions

diff --git a/libopie2/opiecore/device/odevice_mypal.cpp b/libopie2/opiecore/device/odevice_mypal.cpp
index 7e1245a..7eb8d1d 100644
--- a/libopie2/opiecore/device/odevice_mypal.cpp
+++ b/libopie2/opiecore/device/odevice_mypal.cpp
@@ -22,24 +22,25 @@
   -_. . .   )=.  =           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_mypal.h"
 
 /* QT */
 #include <qapplication.h>
+#include <qdir.h>
 #include <qfile.h>
 #include <qtextstream.h>
 #include <qwindowsystem_qws.h>
 
 /* OPIE */
 #include <qpe/config.h>
 #include <qpe/sound.h>
 #include <qpe/qcopenvelope_qws.h>
 
 #include <opie2/okeyfilter.h>
 #include <opie2/oresource.h>
 
@@ -197,56 +198,68 @@ void MyPal::playAlarmSound()
 #endif
 }
 
 bool MyPal::setDisplayBrightness ( int bright )
 {
     bool res = false;
 
     if ( bright > 255 )
         bright = 255;
     if ( bright < 0 )
         bright = 0;
 
-    QString cmdline;
-
-    switch ( model()) {
-    case Model_MyPal_716:
-        if ( !bright )
-            cmdline = QString::fromLatin1( "echo 4 > /sys/class/backlight/pxafb/power");
-        else
-            cmdline = QString::fromLatin1( "echo 0 > /sys/class/backlight/pxafb/power; echo %1 > /sys/class/backlight/pxafb/brightness" ).arg( bright );
-        // No Global::shellQuote as we gurantee it to be sane
-        res = ( ::system( QFile::encodeName(cmdline) ) == 0 );
-        break; 
-    default:
-        res = OAbstractMobileDevice::setDisplayBrightness(bright);
+    QDir sysClass( "/sys/class/backlight/pxafb/" );
+    sysClass.setFilter(QDir::Dirs);
+    int fd;
+    if ( sysClass.exists() ) {
+        QString sysClassPath = sysClass.absFilePath( "/sys/class/backlight/pxafb/power" );
+        fd = ::open( sysClassPath, O_WRONLY | O_NONBLOCK );
+        if ( fd ) {
+            char buf[10];
+            buf[0] = bright ? 0 : 4;
+            buf[1] = '\0';
+            res = ( ::write( fd, &buf[0], 2 ) == 0 );
+            ::close( fd );
+        }
+        sysClassPath = sysClass.absFilePath( "/sys/class/backlight/pxafb/brightness" );
+        fd = ::open( sysClassPath, O_WRONLY | O_NONBLOCK );
+        if ( fd ) {
+            char buf[100];
+            int len = ::snprintf( &buf[0], sizeof buf, "%d", bright );
+            res = ( ::write( fd, &buf[0], len ) == 0 );
+            ::close( fd );
+        }
     }
 
     return res;
 }
 
 int MyPal::displayBrightnessResolution() const
 {
     switch ( model()) {
         case Model_MyPal_716:
             return 7;
         default:
             return OAbstractMobileDevice::displayBrightnessResolution();
     }
 }
 
 bool MyPal::setDisplayStatus ( bool on )
 {
     bool res = false;
 
-    QString cmdline;
-
-    if ( model() == Model_MyPal_716 ) {
-        cmdline = QString::fromLatin1( "echo %1 > /sys/class/lcd/pxafb/power; echo %2 > /sys/class/backlight/pxafb/power").arg( on ? "0" : "4" ).arg( on ? "0" : "4" );
-    } else {
-        return OAbstractMobileDevice::setDisplayStatus(on);
+    QDir sysClass( "/sys/class/lcd/" );
+    sysClass.setFilter(QDir::Dirs);
+    if ( sysClass.exists() ) {
+        QString sysClassPath = sysClass.absFilePath( "/sys/class/lcd/pxafb/power" );
+        int fd = ::open( sysClassPath, O_WRONLY | O_NONBLOCK );
+        if ( fd ) {
+            char buf[10];
+            buf[0] = on ? 0 : 4;
+            buf[1] = '\0';
+            res = ( ::write( fd, &buf[0], 2 ) == 0 );
+            ::close( fd );
+        }
     }
 
-    res = ( ::system( QFile::encodeName(cmdline) ) == 0 );
-
     return res;
 }