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      1 /*	$NetBSD: iic.h,v 1.2 2009/03/14 14:46:06 dsl Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1996 Mark Brinicombe.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by Brini.
     18  * 4. The name of the company nor the name of the author may be used to
     19  *    endorse or promote products derived from this software without specific
     20  *    prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
     23  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     24  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     26  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     27  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     28  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  * RiscBSD kernel project
     35  *
     36  * iic.h
     37  *
     38  * header file for IIC
     39  *
     40  * Created      : 15/04/96
     41  */
     42 
     43 /*
     44  * IIC bus driver attach arguments
     45  */
     46 
     47 #ifdef _KERNEL
     48 
     49 struct iicbus_attach_args {
     50 	int	ib_addr;	/* i/o address */
     51 	void	*ib_aux;	/* driver specific */
     52 };
     53 
     54 #define iic_bitdelay 10
     55 
     56 #define IIC_WRITE	0x00
     57 #define IIC_READ	0x01
     58 
     59 /* Prototypes for assembly functions */
     60 
     61 void iic_set_state(int data, int clock);
     62 void iic_set_state_and_ack(int data, int clock);
     63 void iic_delay(int delay);
     64 
     65 /* Prototype for kernel interface to IIC bus */
     66 
     67 int iic_control(u_char address, u_char *buffer, int count);
     68 
     69 #endif /* _KERNEL */
     70 
     71 /* End of iic.h */
     72