tdecpudevice.cpp

/* This file is part of the TDE libraries
   Copyright (C) 2012 Timothy Pearson <kb9vqf@pearsoncomputing.net>
             (C) 2013 Golubev Alexander <fatzer2@gmail.com>
 
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License version 2 as published by the Free Software Foundation.
 
   This library 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., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/
 
#include "tdecpudevice.h"
 
#include <unistd.h>
 
#include <tqfile.h>
 
#include "tdeglobal.h"
 
#include "tdehardwaredevices.h"
 
#include "config.h"
 
// uPower
#if defined(WITH_TDEHWLIB_DAEMONS)
    #include <tqdbusdata.h>
    #include <tqdbusmessage.h>
    #include <tqdbusproxy.h>
    #include <tqdbusvariant.h>
    #include <tqdbusconnection.h>
#endif
 
 
TDECPUDevice::TDECPUDevice(TDEGenericDeviceType::TDEGenericDeviceType dt, TQString dn) : TDEGenericDevice(dt, dn) {
    m_frequency = -1;
    m_minfrequency = -1;
    m_maxfrequency = -1;
    m_corenumber = -1;
    m_transitionlatency = -1;
}
 
TDECPUDevice::~TDECPUDevice() {
}
 
double TDECPUDevice::frequency() {
    return m_frequency;
}
 
void TDECPUDevice::internalSetFrequency(double fr) {
    m_frequency = fr;
}
 
double TDECPUDevice::minFrequency() {
    return m_minfrequency;
}
 
void TDECPUDevice::internalSetMinFrequency(double fr) {
    m_minfrequency = fr;
}
 
double TDECPUDevice::maxFrequency() {
    return m_maxfrequency;
}
 
void TDECPUDevice::internalSetMaxFrequency(double fr) {
    m_maxfrequency = fr;
}
 
double TDECPUDevice::transitionLatency() {
    return m_transitionlatency;
}
 
void TDECPUDevice::internalSetTransitionLatency(double tl) {
    m_transitionlatency = tl;
}
 
TQString TDECPUDevice::governor() {
    return m_governor;
}
 
void TDECPUDevice::internalSetGovernor(TQString gr) {
    m_governor = gr;
}
 
TQString TDECPUDevice::scalingDriver() {
    return m_scalingdriver;
}
 
void TDECPUDevice::internalSetScalingDriver(TQString dr) {
    m_scalingdriver = dr;
}
 
TQStringList TDECPUDevice::dependentProcessors() {
    return m_tiedprocs;
}
 
void TDECPUDevice::internalSetDependentProcessors(TQStringList dp) {
    m_tiedprocs = dp;
}
 
TQStringList TDECPUDevice::availableFrequencies() {
    return m_frequencies;
}
 
void TDECPUDevice::internalSetAvailableFrequencies(TQStringList af) {
    m_frequencies = af;
}
 
TQStringList TDECPUDevice::availableGovernors() {
    return m_governers;
}
 
void TDECPUDevice::internalSetAvailableGovernors(TQStringList gp) {
    m_governers = gp;
}
 
void TDECPUDevice::internalSetCoreNumber(int cn) {
    m_corenumber = cn;
}
 
bool TDECPUDevice::canSetGovernor() {
    TQString governornode = systemPath() + "/cpufreq/scaling_governor";
    int rval = access (governornode.ascii(), W_OK);
    if (rval == 0) {
        return true;
    }
 
#ifdef WITH_TDEHWLIB_DAEMONS
    {
        TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
        if (dbusConn.isConnected()) {
            TQT_DBusProxy hardwareControl("org.trinitydesktop.hardwarecontrol", "/org/trinitydesktop/hardwarecontrol", "org.trinitydesktop.hardwarecontrol.CPUGovernor", dbusConn);
            if (hardwareControl.canSend()) {
                // can set CPU governor?
                TQValueList<TQT_DBusData> params;
                params << TQT_DBusData::fromInt32(coreNumber());
                TQT_DBusMessage reply = hardwareControl.sendWithReply("CanSetCPUGovernor", params);
                if (reply.type() == TQT_DBusMessage::ReplyMessage && reply.count() == 1) {
                    return reply[0].toBool();
                }
            }
        }
    }
#endif // WITH_TDEHWLIB_DAEMONS
 
    return false;
}
 
void TDECPUDevice::setGovernor(TQString gv) {
    bool setGovernorDone = false;
 
    TQString governornode = systemPath() + "/cpufreq/scaling_governor";
    TQFile file( governornode );
    if ( file.open( IO_WriteOnly ) ) {
        TQTextStream stream( &file );
        stream << gv.lower();
        file.close();
        setGovernorDone = true;
    }
 
#ifdef WITH_TDEHWLIB_DAEMONS
    if ( !setGovernorDone ) {
        TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
        if (dbusConn.isConnected()) {
            TQT_DBusProxy hardwareControl("org.trinitydesktop.hardwarecontrol", "/org/trinitydesktop/hardwarecontrol", "org.trinitydesktop.hardwarecontrol.CPUGovernor", dbusConn);
            if (hardwareControl.canSend()) {
                // set CPU governor
                TQValueList<TQT_DBusData> params;
                params << TQT_DBusData::fromInt32(coreNumber()) << TQT_DBusData::fromString(gv.lower());
                TQT_DBusMessage reply = hardwareControl.sendWithReply("SetCPUGovernor", params);
                if (reply.type() == TQT_DBusMessage::ReplyMessage) {
                    setGovernorDone = true;
                }
            }
        }
    }
#endif // WITH_TDEHWLIB_DAEMONS
 
    // Force update of the device information object
    if ( setGovernorDone ) {
        TDEGlobal::hardwareDevices()->processModifiedCPUs();
    }
}
 
bool TDECPUDevice::canSetMaximumScalingFrequency() {
    TQString freqnode = systemPath() + "/cpufreq/scaling_max_freq";
    int rval = access (freqnode.ascii(), W_OK);
    if (rval == 0) {
        return true;
    }
    else {
        return false;
    }
}
 
void TDECPUDevice::setMaximumScalingFrequency(double fr) {
    TQString freqnode = systemPath() + "/cpufreq/scaling_max_freq";
    TQFile file( freqnode );
    if ( file.open( IO_WriteOnly ) ) {
        TQTextStream stream( &file );
        stream << TQString("%1").arg(fr*1000000.0, 0, 'f', 0);
        file.close();
    }
 
    // Force update of the device information object
    TDEGlobal::hardwareDevices()->processModifiedCPUs();
}
 
int TDECPUDevice::coreNumber() {
    return m_corenumber;
}
 
#include "tdecpudevice.moc"