reactos/win32ss/drivers/videoprt/timer.c

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/*
* VideoPort driver
*
* Copyright (C) 2002, 2003, 2004 ReactOS Team
*
* 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
*
*/
#include "videoprt.h"
#define NDEBUG
#include <debug.h>
/* PRIVATE FUNCTIONS **********************************************************/
VOID NTAPI
IntVideoPortTimerRoutine(
IN PDEVICE_OBJECT DeviceObject,
IN PVOID ServiceContext)
{
PVIDEO_PORT_DEVICE_EXTENSION DeviceExtension = ServiceContext;
ASSERT(DeviceExtension->DriverExtension->InitializationData.HwTimer != NULL);
DeviceExtension->DriverExtension->InitializationData.HwTimer(
&DeviceExtension->MiniPortDeviceExtension);
}
BOOLEAN NTAPI
IntVideoPortSetupTimer(
IN PDEVICE_OBJECT DeviceObject,
IN PVIDEO_PORT_DRIVER_EXTENSION DriverExtension)
{
NTSTATUS Status;
PVIDEO_PORT_DEVICE_EXTENSION DeviceExtension;
DeviceExtension = (PVIDEO_PORT_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
if (DriverExtension->InitializationData.HwTimer != NULL)
{
INFO_(VIDEOPRT, "Initializing timer\n");
Status = IoInitializeTimer(
DeviceObject,
IntVideoPortTimerRoutine,
DeviceExtension);
if (!NT_SUCCESS(Status))
{
ERR_(VIDEOPRT, "IoInitializeTimer failed with status 0x%08x\n", Status);
return FALSE;
}
}
return TRUE;
}
/* PUBLIC FUNCTIONS ***********************************************************/
/*
* @implemented
*/
VOID NTAPI
VideoPortStartTimer(IN PVOID HwDeviceExtension)
{
TRACE_(VIDEOPRT, "VideoPortStartTimer\n");
IoStartTimer(VIDEO_PORT_GET_DEVICE_EXTENSION(HwDeviceExtension)->FunctionalDeviceObject);
}
/*
* @implemented
*/
VOID NTAPI
VideoPortStopTimer(IN PVOID HwDeviceExtension)
{
TRACE_(VIDEOPRT, "VideoPortStopTimer\n");
IoStopTimer(VIDEO_PORT_GET_DEVICE_EXTENSION(HwDeviceExtension)->FunctionalDeviceObject);
}