void ApplePS2SynapticsTouchPad::setDevicePowerState( UInt32 whatToDo )
{
switch ( whatToDo )
{
case kPS2C_DisableDevice:
//
// Disable touchpad (synchronous).
//
setTouchPadEnable( false );
break;
case kPS2C_EnableDevice:
//
// Must not issue any commands before the device has
// completed its power-on self-test and calibration.
//
IOSleep(1000);
setTouchPadModeByte( _touchPadModeByte );
//
// Enable the mouse clock (should already be so) and the
// mouse IRQ line.
//
setCommandByte( kCB_EnableMouseIRQ, kCB_DisableMouseClock );
//
// Clear packet buffer pointer to avoid issues caused by
// stale packet fragments.
//
_packetByteCount = 0;
//
// Finally, we enable the trackpad itself, so that it may
// start reporting asynchronous events.
//
setTouchPadEnable( true );
break;
}
}
void ApplePS2SynapticsTouchPad::stop( IOService * provider )
{
//
// The driver has been instructed to stop. Note that we must break all
// connections to other service objects now (ie. no registered actions,
// no pointers and retains to objects, etc), if any.
//
assert(_device == provider);
//
// Disable the mouse itself, so that it may stop reporting mouse events.
//
setTouchPadEnable(false);
//
// Disable the mouse clock and the mouse IRQ line.
//
setCommandByte( kCB_DisableMouseClock, kCB_EnableMouseIRQ );
//
// Uninstall the interrupt handler.
//
if ( _interruptHandlerInstalled ) _device->uninstallInterruptAction();
_interruptHandlerInstalled = false;
//
// Uninstall the power control handler.
//
if ( _powerControlHandlerInstalled ) _device->uninstallPowerControlAction();
_powerControlHandlerInstalled = false;
super::stop(provider);
}
void ApplePS2CypressTouchPad::stop( IOService * provider )
{
//
// The driver has been instructed to stop. Note that we must break all
// connections to other service objects now (ie. no registered actions,
// no pointers and retains to objects, etc), if any.
//
assert(_device == provider);
//
// Disable the mouse itself, so that it may stop reporting mouse events.
//
setTouchPadEnable(false);
//
// Uninstall the interrupt handler.
//
if ( _interruptHandlerInstalled ) _device->uninstallInterruptAction();
_interruptHandlerInstalled = false;
//
// Uninstall the power control handler.
//
if ( _powerControlHandlerInstalled ) _device->uninstallPowerControlAction();
_powerControlHandlerInstalled = false;
//
// Release the pointer to the provider object.
//
OSSafeReleaseNULL(_device);
super::stop(provider);
}
void ApplePS2CypressTouchPad::setDevicePowerState( UInt32 whatToDo )
{
switch ( whatToDo )
{
case kPS2C_DisableDevice:
//
// Disable touchpad.
//
setTouchPadEnable( false );
break;
case kPS2C_EnableDevice:
//
// Finally, we enable the trackpad itself, so that it may
// start reporting asynchronous events.
//
IOSleep(_wakeDelay);
initTouchPad();
break;
}
}
bool ApplePS2SynapticsTouchPad::start( IOService * provider )
{
UInt64 gesturesEnabled;
//
// The driver has been instructed to start. This is called after a
// successful probe and match.
//
if (!super::start(provider)) return false;
//
// Maintain a pointer to and retain the provider object.
//
_device = (ApplePS2MouseDevice *) provider;
_device->retain();
//
// Announce hardware properties.
//
IOLog("ApplePS2Trackpad: Synaptics TouchPad v%d.%d\n",
(UInt8)(_touchPadVersion >> 8), (UInt8)(_touchPadVersion));
//
// Write the TouchPad mode byte value.
//
setTouchPadModeByte(_touchPadModeByte);
//
// Advertise the current state of the tapping feature.
//
gesturesEnabled = (_touchPadModeByte == kModeByteValueGesturesEnabled)
? 1 : 0;
setProperty("Clicking", gesturesEnabled, sizeof(gesturesEnabled)*8);
//
// Must add this property to let our superclass know that it should handle
// trackpad acceleration settings from user space. Without this, tracking
// speed adjustments from the mouse prefs panel have no effect.
//
setProperty(kIOHIDPointerAccelerationTypeKey, kIOHIDTrackpadAccelerationType);
//
// Install our driver's interrupt handler, for asynchronous data delivery.
//
_device->installInterruptAction(this,
(PS2InterruptAction)&ApplePS2SynapticsTouchPad::interruptOccurred);
_interruptHandlerInstalled = true;
//
// Enable the mouse clock (should already be so) and the mouse IRQ line.
//
setCommandByte( kCB_EnableMouseIRQ, kCB_DisableMouseClock );
//
// Finally, we enable the trackpad itself, so that it may start reporting
// asynchronous events.
//
setTouchPadEnable(true);
//
// Install our power control handler.
//
_device->installPowerControlAction( this, (PS2PowerControlAction)
&ApplePS2SynapticsTouchPad::setDevicePowerState );
_powerControlHandlerInstalled = true;
return true;
}
