Source code of Windows XP (NT5)
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/*++
Copyright (c) 2000,2001 Microsoft Corporation
Module Name: smblite.h
Abstract: Contains SMBus Back Light IOCTL definitions.
Environment: User/Kernel mode
Author: Michael Tsang (MikeTs) 11-Jan-2001
Revision History:--*/
#ifndef _SMBLITE_H
#define _SMBLITE_H
//
// Constants
//
#define BRIGHTNESS_MIN 0
#define BRIGHTNESS_MAX 63
#define SMBLITE_IOCTL_DEVNAME TEXT("\\\\.\\SMBusBackLight")
#define IOCTL_SMBLITE_GETBRIGHTNESS CTL_CODE(FILE_DEVICE_UNKNOWN, \
0, \ METHOD_NEITHER, \ FILE_ANY_ACCESS)#define IOCTL_SMBLITE_SETBRIGHTNESS CTL_CODE(FILE_DEVICE_UNKNOWN, \
1, \ METHOD_NEITHER, \ FILE_ANY_ACCESS)
typedef struct _SMBLITE_BRIGHTNESS{ UCHAR bACValue; //Brightness value when on AC
UCHAR bDCValue; //Brightness value when on DC
} SMBLITE_BRIGHTNESS, *PSMBLITE_BRIGHTNESS;
typedef struct _SMBLITE_SETBRIGHTNESS{ SMBLITE_BRIGHTNESS Brightness; BOOLEAN fSaveSettings;} SMBLITE_SETBRIGHTNESS, *PSMBLITE_SETBRIGHTNESS;
#ifdef SYSACC
#define IOCTL_SYSACC_MEM_REQUEST CTL_CODE(FILE_DEVICE_UNKNOWN, \
1000, \ METHOD_NEITHER, \ FILE_ANY_ACCESS)#define IOCTL_SYSACC_IO_REQUEST CTL_CODE(FILE_DEVICE_UNKNOWN, \
1001, \ METHOD_NEITHER, \ FILE_ANY_ACCESS)#define IOCTL_SYSACC_PCICFG_REQUEST CTL_CODE(FILE_DEVICE_UNKNOWN, \
1002, \ METHOD_NEITHER, \ FILE_ANY_ACCESS)#define IOCTL_SYSACC_SMBUS_REQUEST CTL_CODE(FILE_DEVICE_UNKNOWN, \
1003, \ METHOD_BUFFERED, \ FILE_ANY_ACCESS)
#endif
#endif //ifndef _SMBLITE_H
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