iokit/IOKit/pwr_mgt/IOPMpowerState.h

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
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  13  * terms of an Apple operating system software license agreement.
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  27  */
  28 #include <IOKit/pwr_mgt/IOPM.h>
  29
  30 /*! @header IOPMpowerState.h
  31     @abstract Defines the struct IOPMPowerState that power managed drivers should use to describe their power states.
  32 */
  33
  34 /*! @struct IOPMPowerState
  35     @abstract Describes a device's power state.
  36     @discussion To take part in system power management, drivers should define an array of 2 or more power states and pass it to kernel power management through IOService::registerPowerDriver.
  37     @field version Defines version number of this struct. Just use the value "1" when defining an IOPMPowerState.
  38     @field      capabilityFlags Describes the capability of the device in this state.
  39     @field      outputPowerCharacter Describes the power provided in this state.
  40     @field      inputPowerRequirement Describes the input power required in this state.
  41     @field      staticPower Describes average consumption in milliwatts. Unused; drivers may specify 0.
  42     @field      unbudgetedPower Describes additional consumption from separate power supply (milliWatts). Unused; drivers may specify 0.
  43     @field      powerToAttain Describes dditional power to attain this state from next lower state (in milliWatts). Unused; drivers may specify 0.
  44     @field      timeToAttain Describes time required to enter this state from next lower state (in microseconds). Unused; drivers may specify 0.
  45     @field      settleUpTime Describes settle time required after entering this state from next lower state (microseconds). Unused; drivers may specify 0.
  46     @field timeToLower Describes time required to enter next lower state from this one (microseconds). Unused; drivers may specify 0.
  47     @field      settleDownTime Settle time required after entering next lower state from this state (microseconds). Unused; drivers may specify 0.
  48     @field      powerDomainBudget Describes power in milliWatts a domain in this state can deliver to its children. Unused; drivers may specify 0.
  49 }
  50 */
  51
  52 struct IOPMPowerState
  53 {
  54     unsigned long       version;
  55     IOPMPowerFlags      capabilityFlags;
  56     IOPMPowerFlags      outputPowerCharacter;
  57     IOPMPowerFlags      inputPowerRequirement;
  58     unsigned long       staticPower;
  59     unsigned long       unbudgetedPower;
  60     unsigned long       powerToAttain;
  61     unsigned long       timeToAttain;
  62     unsigned long       settleUpTime;
  63     unsigned long       timeToLower;
  64     unsigned long       settleDownTime;
  65     unsigned long       powerDomainBudget;
  66 };
  67
  68 typedef struct IOPMPowerState IOPMPowerState;
  69
  70 enum {
  71     kIOPMPowerStateVersion1 = 1
  72 };