155 lines
2.9 KiB
C
155 lines
2.9 KiB
C
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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smblitep.h
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Abstract: Contains SMBus Back Light specific definitions.
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Environment:
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Kernel mode
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Author:
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Michael Tsang (MikeTs) 20-Nov-2000
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Revision History:
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--*/
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#ifndef _SMBLITEP_H
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#define _SMBLITEP_H
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//
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// Constants
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//
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#define SMBLITEF_DEVICE_STARTED 0x00000001
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#define SMBLITEF_DEVICE_REMOVED 0x00000002
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#define SMBLITEF_SYM_LINK_CREATED 0x00000004
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#define SMBLITEF_SYSTEM_ON_AC 0x00000008
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#define SMBLITE_POOLTAG 'LbmS'
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#define SMBADDR_BACKLIGHT 0x2c //Addr on bus==0x58
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#define SMBCMD_BACKLIGHT_NORMAL 0x00
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#define SMBCMD_BACKLIGHT_SHUTDOWN 0x80
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#define DEF_ACBRIGHTNESS 32
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#define DEF_DCBRIGHTNESS 16
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typedef struct _SMBLITE_DEVEXT
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{
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ULONG dwfSmbLite;
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SMBLITE_BRIGHTNESS BackLightBrightness;
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PDEVICE_OBJECT FDO;
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PDEVICE_OBJECT PDO;
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PDEVICE_OBJECT LowerDevice;
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PVOID hPowerStateCallback;
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UNICODE_STRING SymbolicName;
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IO_REMOVE_LOCK RemoveLock;
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} SMBLITE_DEVEXT, *PSMBLITE_DEVEXT;
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//
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// Global Data
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//
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extern const WCHAR gcwstrACBrightness[];
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extern const WCHAR gcwstrDCBrightness[];
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//
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// Function prototypes
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//
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// smblite.c
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NTSTATUS EXTERNAL
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DriverEntry(
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IN PDRIVER_OBJECT DrvObj,
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IN PUNICODE_STRING RegPath
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);
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NTSTATUS EXTERNAL
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SmbLiteAddDevice(
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IN PDRIVER_OBJECT DrvObj,
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IN PDEVICE_OBJECT DevObj
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);
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VOID INTERNAL
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RemoveDevice(
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IN PSMBLITE_DEVEXT devext
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);
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VOID EXTERNAL
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SmbLiteUnload(
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IN PDRIVER_OBJECT DrvObj
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);
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NTSTATUS EXTERNAL
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SmbLiteCreateClose(
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IN PDEVICE_OBJECT DevObj,
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IN PIRP Irp
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);
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NTSTATUS INTERNAL
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HookPowerStateCallback(
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IN PSMBLITE_DEVEXT devext
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);
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VOID
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PowerStateCallbackProc(
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IN PVOID CallbackContext,
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IN PVOID Arg1,
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IN PVOID Arg2
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);
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// pnp.c
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NTSTATUS EXTERNAL
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SmbLitePnp(
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IN PDEVICE_OBJECT DevObj,
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IN PIRP Irp
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);
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NTSTATUS EXTERNAL
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SmbLitePower(
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IN PDEVICE_OBJECT DevObj,
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IN PIRP Irp
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);
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// ioctl.c
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NTSTATUS EXTERNAL
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SmbLiteIoctl(
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IN PDEVICE_OBJECT DevObj,
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IN PIRP Irp
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);
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NTSTATUS INTERNAL
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GetBackLightBrightness(
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IN PSMBLITE_DEVEXT devext,
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OUT PSMBLITE_BRIGHTNESS Brightness
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);
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NTSTATUS INTERNAL
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SetBackLightBrightness(
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IN PSMBLITE_DEVEXT devext,
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IN PSMBLITE_BRIGHTNESS Brightness,
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IN BOOLEAN fSaveSettings
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);
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NTSTATUS INTERNAL
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SMBRequest(
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IN PSMBLITE_DEVEXT devext,
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IN OUT PSMB_REQUEST SmbReq
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);
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NTSTATUS INTERNAL
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RegQueryDeviceParam(
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IN PDEVICE_OBJECT DevObj,
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IN PCWSTR pwstrParamName,
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OUT PVOID pbBuff,
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IN ULONG dwcbLen
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);
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NTSTATUS INTERNAL
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RegSetDeviceParam(
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IN PDEVICE_OBJECT DevObj,
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IN PCWSTR pwstrParamName,
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IN PVOID pbBuff,
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IN ULONG dwcbLen
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);
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#endif //ifndef _SMBLITEP_H
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