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/** @file
The file provides services that allow information about a
absolute pointer device to be retrieved.
Copyright (c) 2006 - 2008, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef __ABSOLUTE_POINTER_H__
#define __ABSOLUTE_POINTER_H__
#define EFI_ABSOLUTE_POINTER_PROTOCOL_GUID \
{ 0x8D59D32B, 0xC655, 0x4AE9, { 0x9B, 0x15, 0xF2, 0x59, 0x04, 0x99, 0x2A, 0x43 } }
typedef struct _EFI_ABSOLUTE_POINTER_PROTOCOL EFI_ABSOLUTE_POINTER_PROTOCOL;
//*******************************************************
// EFI_ABSOLUTE_POINTER_MODE
//*******************************************************
/**
The following data values in the EFI_ABSOLUTE_POINTER_MODE
interface are read-only and are changed by using the appropriate
interface functions.
@param AbsoluteMinX The Absolute Minimum of the device on the
x-axis.
@param AbsoluteMinY The Absolute Minimum of the device on the
y axis.
@param AbsoluteMinZ The Absolute Minimum of the device on the
z-axis.
@param AbsoluteMaxX The Absolute Maximum of the device on the
x-axis. If 0, and the AbsoluteMinX is 0,
then the pointer device does not support a
xaxis.
@param AbsoluteMaxY The Absolute Maximum of the device on the
y -axis. If 0,, and the AbsoluteMinX is 0,
then the pointer device does not support a
yaxis.
@param AbsoluteMaxZ The Absolute Maximum of the device on the
z-axis. If 0 , and the AbsoluteMinX is 0,
then the pointer device does not support a
zaxis.
@param Attributes The following bits are set as needed (or'd
together) to indicate the capabilities of the device
supported. The remaining bits are undefined and should be 0.
**/
typedef struct {
UINT64 AbsoluteMinX;
UINT64 AbsoluteMinY;
UINT64 AbsoluteMinZ;
UINT64 AbsoluteMaxX;
UINT64 AbsoluteMaxY;
UINT64 AbsoluteMaxZ;
UINT32 Attributes;
} EFI_ABSOLUTE_POINTER_MODE;
//
// If set, indicates this device supports an alternate button input.
//
#define EFI_ABSP_SupportsAltActive 0x00000001
//
// If set, indicates this device returns pressure data in parameter CurrentZ.
//
#define EFI_ABSP_SupportsPressureAsZ 0x00000002
/**
This function resets the pointer device hardware. As part of
initialization process, the firmware/device will make a quick
but reasonable attempt to verify that the device is
functioning. If the ExtendedVerification flag is TRUE the
firmware may take an extended amount of time to verify the
device is operating on reset. Otherwise the reset operation is
to occur as quickly as possible. The hardware verification
process is not defined by this specification and is left up to
the platform firmware or driver to implement.
@param This A pointer to the EFI_ABSOLUTE_POINTER_PROTOCOL
instance.
@param ExtendedVerification Indicates that the driver may
perform a more exhaustive
verification operation of the
device during reset.
@retval EFI_SUCCESS The device was reset.
@retval EFI_DEVICE_ERROR The device is not functioning
correctly and could not be reset.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_ABSOLUTE_POINTER_RESET)(
IN EFI_ABSOLUTE_POINTER_PROTOCOL *This,
IN BOOLEAN ExtendedVerification
);
/**
Definitions of bits within ActiveButtons.
@param EFI_ABSP_TouchActive This bit is set if the touch
sensor is active.
@param EFI_ABS_AltActive This bit is set if the alt sensor,
such as pen-side button, is
active.
**/
#define EFI_ABSP_TouchActive 0x00000001
#define EFI_ABS_AltActive 0x00000002
/**
Definition of EFI_ABSOLUTE_POINTER_STATE.
@param CurrentX The unsigned position of the activation on the
x axis If the AboluteMinX and the AboluteMaxX
fields of the EFI_ABSOLUTE_POINTER_MODE
structure are both 0, then this pointer device
does not support an x-axis, and this field
must be ignored.
@param CurrentY The unsigned position of the activation on the
x axis If the AboluteMinY and the AboluteMaxY
fields of the EFI_ABSOLUTE_POINTER_MODE
structure are both 0, then this pointer device
does not support an y-axis, and this field
must be ignored.
@param CurrentZ The unsigned position of the activation on the
x axis, or the pressure measurement. If the
AboluteMinZ and the AboluteMaxZ fields of the
EFI_ABSOLUTE_POINTER_MODE structure are
both 0, then this pointer device does not
support an z-axis, and this field must be
ignored.
@param ActiveButtons Bits are set to 1 in this structure item
to indicate that device buttons are
active.
**/
typedef struct {
UINT64 CurrentX;
UINT64 CurrentY;
UINT64 CurrentZ;
UINT32 ActiveButtons;
} EFI_ABSOLUTE_POINTER_STATE;
/**
The GetState() function retrieves the current state of a pointer
device. This includes information on the active state associated
with the pointer device and the current position of the axes
associated with the pointer device. If the state of the pointer
device has not changed since the last call to GetState(), then
EFI_NOT_READY is returned. If the state of the pointer device
has changed since the last call to GetState(), then the state
information is placed in State, and EFI_SUCCESS is returned. If
a device error occurs while attempting to retrieve the state
information, then EFI_DEVICE_ERROR is returned.
@param This A pointer to the EFI_ABSOLUTE_POINTER_PROTOCOL
instance.
@param State A pointer to the state information on the
pointer device.
@retval EFI_SUCCESS The state of the pointer device was
returned in State.
@retval EFI_NOT_READY The state of the pointer device has not
changed since the last call to GetState().
@retval EFI_DEVICE_ERROR A device error occurred while
attempting to retrieve the pointer
device's current state.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_ABSOLUTE_POINTER_GET_STATE)(
IN EFI_ABSOLUTE_POINTER_PROTOCOL *This,
IN OUT EFI_ABSOLUTE_POINTER_STATE *State
);
/**
@par Protocol Description:
The EFI_ABSOLUTE_POINTER_PROTOCOL provides a set of services
for a pointer device that can be used as an input device from an
application written to this specification. The services include
the ability to reset the pointer device, retrieve the state of
the pointer device, and retrieve the capabilities of the pointer
device. In addition certain data items describing the device are
provided.
@param Reset Resets the pointer device.
@param GetState Retrieves the current state of the pointer
device.
@param WaitForInput Event to use with WaitForEvent() to wait
for input from the pointer device.
@param Mode Pointer to EFI_ABSOLUTE_POINTER_MODE data.
**/
struct _EFI_ABSOLUTE_POINTER_PROTOCOL {
EFI_ABSOLUTE_POINTER_RESET Reset;
EFI_ABSOLUTE_POINTER_GET_STATE GetState;
EFI_EVENT WaitForInput;
EFI_ABSOLUTE_POINTER_MODE *Mode;
};
extern EFI_GUID gEfiAbsolutePointerProtocolGuid;
#endif
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