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      1 /*	$NetBSD: mc146818var.h,v 1.8 2024/03/06 02:31:44 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2003 Izumi Tsutsui.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #ifndef _DEV_IC_MC146818VAR_H_
     28 #define	_DEV_IC_MC146818VAR_H_
     29 
     30 struct mc146818_softc {
     31 	device_t sc_dev;
     32 
     33 	bus_space_tag_t sc_bst;			/* bus space tag */
     34 	bus_space_handle_t sc_bsh;		/* bus space handle */
     35 
     36 	struct todr_chip_handle sc_handle;	/* TODR handle */
     37 	u_int sc_year0;				/* year counter offset */
     38 	u_int sc_flag;				/* MD flags */
     39 #define MC146818_NO_CENT_ADJUST	0x0001		/* don't adjust century */
     40 #define MC146818_BCD		0x0002		/* use BCD mode */
     41 #define MC146818_12HR		0x0004		/* use AM/PM mode */
     42 
     43 	/* MD chip register read/write functions */
     44 	u_int (*sc_mcread)(struct mc146818_softc *, u_int);
     45 	void (*sc_mcwrite)(struct mc146818_softc *, u_int, u_int);
     46 	/* MD century get/set functions */
     47 	u_int (*sc_getcent)(struct mc146818_softc *);
     48 	void (*sc_setcent)(struct mc146818_softc *, u_int);
     49 };
     50 
     51 void	mc146818_attach(struct mc146818_softc *);
     52 int	mc146818_gettime_ymdhms(todr_chip_handle_t, struct clock_ymdhms *);
     53 int	mc146818_settime_ymdhms(todr_chip_handle_t, struct clock_ymdhms *);
     54 
     55 #endif /* _DEV_IC_MC146818VAR_H_ */
     56