IOI2CInterfacePrivate.h   [plain text]

/*
 * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */

#ifndef _IOKIT_IOI2CINTERFACEPRIVATE_H
#define _IOKIT_IOI2CINTERFACEPRIVATE_H

#ifdef KERNEL
#include <IOKit/IOLib.h>
#include <IOKit/IOUserClient.h>
#include <IOKit/ndrvsupport/IONDRVFramebuffer.h>
#endif /* KERNEL */

#include "IOI2CInterface.h"

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

enum { kIOI2CInlineBufferBytes = 1024 };

struct IOI2CBuffer
{
    IOI2CRequest	request;
    UInt8		inlineBuffer[ kIOI2CInlineBufferBytes ];
};

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#ifdef KERNEL

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

class IOI2CInterfaceUserClient : public IOUserClient
{
    OSDeclareDefaultStructors(IOI2CInterfaceUserClient)

protected:
    task_t	fTask;

public:
    // IOUserClient methods
    virtual IOReturn clientClose( void );

    virtual IOService * getService( void );

    virtual IOExternalMethod * getTargetAndMethodForIndex(
                                        IOService ** targetP, UInt32 index );
    static IOI2CInterfaceUserClient * withTask( task_t owningTask );
    virtual bool start( IOService * provider );
    virtual IOReturn setProperties( OSObject * properties );

    // others

    virtual IOReturn extAcquireBus( void );
    virtual IOReturn extReleaseBus( void );
    virtual IOReturn extIO( void * inStruct, void * outStruct,
                            IOByteCount inSize, IOByteCount * outSize );
};

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#endif /* KERNEL */

#endif /* ! _IOKIT_IOI2CINTERFACEPRIVATE_H */