iokit/Families/IOGraphics/IODisplayWrangler.h

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1999 Apple Computer, Inc.
  24  *
  25  *
  26  * HISTORY
  27  *
  28  */
  29
  30 #ifndef _IOKIT_IODISPLAYWRANGLER_H
  31 #define _IOKIT_IODISPLAYWRANGLER_H
  32
  33 #include <IOKit/IOService.h>
  34 #include <IOKit/graphics/IOFramebuffer.h>
  35 #include <IOKit/graphics/IODisplay.h>
  36
  37 class IOWorkLoop;
  38 class IOCommandQueue;
  39
  40 class IODisplayWrangler : public IOService
  41 {
  42     OSDeclareDefaultStructors( IODisplayWrangler );
  43
  44 private:
  45     bool                fOpen;
  46     IOLock *            fMatchingLock;
  47     OSSet *             fFramebuffers;
  48     OSSet *             fDisplays;
  49     // true: we have informed displays to assume lowest usable state
  50     bool                emergency_informed;
  51     // from control panel: number of idle minutes before dimming
  52     unsigned long       mins_to_dim;
  53     // false: use mins_to_dim unless in emergency situation
  54     bool                use_general_aggressiveness;
  55
  56     virtual void initForPM ( void );
  57     virtual IOReturn setAggressiveness ( unsigned long, unsigned long );
  58     virtual bool activityTickle ( unsigned long, unsigned long );
  59     virtual IOReturn setPowerState ( unsigned long powerStateOrdinal, IOService* whatDevice );
  60     virtual void makeDisplaysUsable ( void );
  61     virtual void idleDisplays ( void );
  62
  63     static bool _displayHandler( void * target, void * ref,
  64                             IOService * newService );
  65     static bool _displayConnectHandler( void * target, void * ref,
  66                             IOService * newService );
  67
  68     virtual bool displayHandler( OSSet * set, IODisplay * newDisplay);
  69     virtual bool displayConnectHandler( void * ref, IODisplayConnect * connect);
  70
  71     virtual bool makeDisplayConnects( IOFramebuffer * fb );
  72
  73     virtual IODisplayConnect * getDisplayConnect(
  74                 IOFramebuffer * fb, IOIndex connect );
  75
  76     virtual IOReturn getConnectFlagsForDisplayMode(
  77                 IODisplayConnect * connect,
  78                 IODisplayModeID mode, UInt32 * flags );
  79
  80     virtual IOReturn getDefaultMode( IOFramebuffer * fb,
  81                         IODisplayModeID * mode, IOIndex * depth );
  82
  83     virtual IOReturn findStartupMode( IOFramebuffer * fb );
  84
  85 public:
  86
  87     IOService * rootDomain;                     // points to Root Power Domain
  88
  89     virtual bool start(IOService * provider);
  90
  91     static IOReturn clientStart( IOFramebuffer * fb );
  92
  93     static IOReturn getFlagsForDisplayMode(
  94                 IOFramebuffer * fb,
  95                 IODisplayModeID mode, UInt32 * flags );
  96
  97 };
  98
  99 #endif /* _IOKIT_IODISPLAYWRANGLER_H */