win32ss/drivers/videoprt/timer.c

   1 /*
   2  * VideoPort driver
   3  *
   4  * Copyright (C) 2002, 2003, 2004 ReactOS Team
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #include "videoprt.h"
  23
  24 #define NDEBUG
  25 #include <debug.h>
  26
  27 /* PRIVATE FUNCTIONS **********************************************************/
  28
  29 VOID NTAPI
  30 IntVideoPortTimerRoutine(
  31    IN PDEVICE_OBJECT DeviceObject,
  32    IN PVOID ServiceContext)
  33 {
  34    PVIDEO_PORT_DEVICE_EXTENSION DeviceExtension = ServiceContext;
  35
  36    ASSERT(DeviceExtension->DriverExtension->InitializationData.HwTimer != NULL);
  37
  38    DeviceExtension->DriverExtension->InitializationData.HwTimer(
  39       &DeviceExtension->MiniPortDeviceExtension);
  40 }
  41
  42 BOOLEAN NTAPI
  43 IntVideoPortSetupTimer(
  44    IN PDEVICE_OBJECT DeviceObject,
  45    IN PVIDEO_PORT_DRIVER_EXTENSION DriverExtension)
  46 {
  47    NTSTATUS Status;
  48    PVIDEO_PORT_DEVICE_EXTENSION DeviceExtension;
  49
  50    DeviceExtension = (PVIDEO_PORT_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
  51
  52    if (DriverExtension->InitializationData.HwTimer != NULL)
  53    {
  54       INFO_(VIDEOPRT, "Initializing timer\n");
  55
  56       Status = IoInitializeTimer(
  57          DeviceObject,
  58          IntVideoPortTimerRoutine,
  59          DeviceExtension);
  60
  61       if (!NT_SUCCESS(Status))
  62       {
  63          ERR_(VIDEOPRT, "IoInitializeTimer failed with status 0x%08x\n", Status);
  64          return FALSE;
  65       }
  66    }
  67
  68    return TRUE;
  69 }
  70
  71 /* PUBLIC FUNCTIONS ***********************************************************/
  72
  73 /*
  74  * @implemented
  75  */
  76
  77 VOID NTAPI
  78 VideoPortStartTimer(IN PVOID HwDeviceExtension)
  79 {
  80    TRACE_(VIDEOPRT, "VideoPortStartTimer\n");
  81    IoStartTimer(VIDEO_PORT_GET_DEVICE_EXTENSION(HwDeviceExtension)->FunctionalDeviceObject);
  82 }
  83
  84 /*
  85  * @implemented
  86  */
  87
  88 VOID NTAPI
  89 VideoPortStopTimer(IN PVOID HwDeviceExtension)
  90 {
  91    TRACE_(VIDEOPRT, "VideoPortStopTimer\n");
  92    IoStopTimer(VIDEO_PORT_GET_DEVICE_EXTENSION(HwDeviceExtension)->FunctionalDeviceObject);
  93 }