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112 lines
4.2 KiB
C
112 lines
4.2 KiB
C
/** @file
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MM Power Button Dispatch Protocol as defined in PI 1.5 Specification
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Volume 4 Management Mode Core Interface.
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This protocol provides the parent dispatch service for the power button MMI source generator.
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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@par Revision Reference:
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This protocol is from PI Version 1.5.
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**/
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#ifndef _MM_POWER_BUTTON_DISPATCH_H_
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#define _MM_POWER_BUTTON_DISPATCH_H_
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#include <Pi/PiMmCis.h>
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#define EFI_MM_POWER_BUTTON_DISPATCH_PROTOCOL_GUID \
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{ \
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0x1b1183fa, 0x1823, 0x46a7, {0x88, 0x72, 0x9c, 0x57, 0x87, 0x55, 0x40, 0x9d } \
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}
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///
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/// Power Button phases.
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///
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typedef enum {
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EfiPowerButtonEntry,
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EfiPowerButtonExit,
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EfiPowerButtonMax
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} EFI_POWER_BUTTON_PHASE;
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///
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/// The dispatch function's context.
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///
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typedef struct {
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///
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/// Designates whether this handler should be invoked upon entry or exit.
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///
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EFI_POWER_BUTTON_PHASE Phase;
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} EFI_MM_POWER_BUTTON_REGISTER_CONTEXT;
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typedef struct _EFI_MM_POWER_BUTTON_DISPATCH_PROTOCOL EFI_MM_POWER_BUTTON_DISPATCH_PROTOCOL;
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/**
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Provides the parent dispatch service for a power button event.
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This service registers a function (DispatchFunction) which will be called when an MMI is
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generated because the power button was pressed or released, as specified by RegisterContext.
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On return, DispatchHandle contains a unique handle which may be used later to unregister the
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function using UnRegister().
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The DispatchFunction will be called with Context set to the same value as was passed into
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this function in RegisterContext and with CommBuffer and CommBufferSize set to NULL.
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@param[in] This Pointer to the EFI_MM_POWER_BUTTON_DISPATCH_PROTOCOL instance.
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@param[in] DispatchFunction Function to register for handler when power button is pressed or released.
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@param[in] RegisterContext Pointer to the dispatch function's context. The caller fills in this context
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before calling the Register() function to indicate to the Register() function
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the power button MMI phase for which the dispatch function should be invoked.
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@param[out] DispatchHandle Handle generated by the dispatcher to track the function instance.
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@retval EFI_SUCCESS The dispatch function has been successfully
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registered and the MMI source has been enabled.
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@retval EFI_DEVICE_ERROR The driver was unable to enable the MMI source.
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@retval EFI_INVALID_PARAMETER RegisterContext is invalid. The power button input value
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is not within valid range.
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@retval EFI_OUT_OF_RESOURCES There is not enough memory (system or MM) to manage this child.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_MM_POWER_BUTTON_REGISTER)(
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IN CONST EFI_MM_POWER_BUTTON_DISPATCH_PROTOCOL *This,
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IN EFI_MM_HANDLER_ENTRY_POINT DispatchFunction,
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IN EFI_MM_POWER_BUTTON_REGISTER_CONTEXT *RegisterContext,
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OUT EFI_HANDLE *DispatchHandle
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);
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/**
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Unregisters a power-button service.
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This service removes the handler associated with DispatchHandle so that it will no longer be
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called when the standby button is pressed or released.
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@param[in] This Pointer to the EFI_MM_POWER_BUTTON_DISPATCH_PROTOCOL instance.
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@param[in] DispatchHandle Handle of the service to remove.
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@retval EFI_SUCCESS The service has been successfully removed.
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@retval EFI_INVALID_PARAMETER The DispatchHandle was not valid.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_MM_POWER_BUTTON_UNREGISTER)(
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IN CONST EFI_MM_POWER_BUTTON_DISPATCH_PROTOCOL *This,
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IN EFI_HANDLE DispatchHandle
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);
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///
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/// Interface structure for the MM Power Button Dispatch Protocol.
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///
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/// This protocol provides the parent dispatch service for the power button MMI source generator.
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///
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struct _EFI_MM_POWER_BUTTON_DISPATCH_PROTOCOL {
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EFI_MM_POWER_BUTTON_REGISTER Register;
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EFI_MM_POWER_BUTTON_UNREGISTER UnRegister;
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};
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extern EFI_GUID gEfiMmPowerButtonDispatchProtocolGuid;
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#endif
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