/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.driver.ps2;
import java.io.IOException;
import java.nio.channels.ByteChannel;
import org.apache.log4j.Logger;
import org.jnode.driver.DeviceException;
import org.jnode.driver.DriverException;
import org.jnode.driver.input.AbstractPointerDriver;
import org.jnode.driver.input.PointerInterpreter;
import org.jnode.system.resource.IRQResource;
import org.jnode.util.NumberUtils;
import org.jnode.util.TimeoutException;
/**
* @author qades
*/
public class PS2PointerDriver extends AbstractPointerDriver implements PS2Constants {
private static final Logger log = Logger.getLogger(PS2PointerDriver.class);
static final int CMD_SET_RES = 0xE8; /* Set resolution */
static final int CMD_SET_SCALE11 = 0xE6; /* Set 1:1 scaling */
static final int CMD_SET_SCALE21 = 0xE7; /* Set 2:1 scaling */
static final int CMD_GET_SCALE = 0xE9; /* Get scaling factor */
static final int CMD_SET_STREAM = 0xEA; /* Set stream mode */
private final PS2Bus bus;
private final PS2ByteChannel channel;
private IRQResource irq;
PS2PointerDriver(PS2Bus ps2) {
this.bus = ps2;
this.channel = ps2.getMouseChannel();
}
protected int getIRQ() {
return MOUSE_IRQ;
}
protected boolean initPointer(boolean reset) throws DeviceException {
boolean result = true;
if (reset) {
result &= resetPointer();
}
result &= enablePointer();
result &= setRate(100);
return result;
}
protected boolean resetPointer() throws DeviceException {
log.debug("resetPointer");
if (!bus.writeMouseCommands(CMD_RESET, null, 0))
return false;
bus.flush();
return true;
}
protected boolean enablePointer() throws DeviceException {
log.debug("enablePointer");
return bus.writeMouseCommands(CMD_ENABLE, null, 0);
}
protected boolean disablePointer() throws DeviceException {
log.debug("disablePointer");
return bus.writeMouseCommands(CMD_DISABLE, null, 0);
}
protected int getPointerId() throws DriverException {
try {
if (!bus.writeMouseCommands(CMD_GET_ID, null, 1)) {
throw new DriverException("Cannot request Pointer ID");
}
return channel.read(50);
} catch (DeviceException ex) {
throw new DriverException("Error in requesting Pointer ID", ex);
} catch (IOException ex) {
throw new DriverException("Error in requesting Pointer ID", ex);
} catch (TimeoutException ex) {
throw new DriverException("Timeout in requesting Pointer ID", ex);
} catch (InterruptedException ex) {
throw new DriverException("Interrupted in requesting Pointer ID", ex);
}
}
protected boolean setRate(int samples) throws DeviceException {
return bus.writeMouseCommands(CMD_SET_RATE, new int[]{samples}, 0);
}
/**
* @see org.jnode.driver.input.AbstractPointerDriver#getChannel()
*/
protected ByteChannel getChannel() {
return channel;
}
/**
* @see org.jnode.driver.Driver#startDevice()
*/
protected synchronized void startDevice() throws DriverException {
irq = bus.claimResources(getDevice(), MOUSE_IRQ);
try {
// Set the mode
setEnabled(true);
} catch (DeviceException ex) {
throw new DriverException("Cannot enable keyboard", ex);
}
super.startDevice();
// Make sure all queues are empty
bus.flush();
final PointerInterpreter interpreter = getPointerInterpreter();
if (interpreter != null) {
interpreter.reset();
}
}
/**
* @see org.jnode.driver.Driver#stopDevice()
*/
protected synchronized void stopDevice() throws DriverException {
try {
setEnabled(false);
} catch (DeviceException ex) {
log.debug("Error disabling keyboard", ex);
}
super.stopDevice();
irq.release();
irq = null;
bus.releaseResources();
}
private final void setEnabled(boolean on) throws DeviceException {
log.debug("Old mode 0x" + NumberUtils.hex(bus.getMode(), 2));
bus.setMouseEnabled(on);
log.debug("New mode 0x" + NumberUtils.hex(bus.getMode(), 2));
}
}