iokit/Drivers/platform/drvAppleIntelClock/IntelClock.cpp

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 //
  24 // Backdoor hack for Intel Clock.
  25 //
  26 //
  27
  28 #include "AppleIntelClock.h"
  29
  30 #define super IOService
  31 OSDefineMetaClassAndStructors(AppleIntelClock, IOService);
  32
  33 bool
  34 AppleIntelClock::start(IOService *provider)
  35 {
  36         if (!super::start(provider))
  37                 return false;
  38
  39         /*
  40          * The clock is already provided by the kernel, so all we need
  41          * here is publish its availability for any IOKit client to use.
  42          */
  43         publishResource("IORTC", this);
  44         return true;
  45 }