1/*	$NetBSD: mc146818var.h,v 1.6 2008/03/29 07:20:01 tsutsui 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
27struct mc146818_softc {
28	device_t sc_dev;
29
30	bus_space_tag_t sc_bst;			/* bus space tag */
31	bus_space_handle_t sc_bsh;		/* bus space handle */
32
33	struct todr_chip_handle sc_handle;	/* TODR handle */
34	u_int sc_year0;				/* year counter offset */
35	u_int sc_flag;				/* MD flags */
36#define MC146818_NO_CENT_ADJUST	0x0001		/* don't adjust century */
37#define MC146818_BCD		0x0002		/* use BCD mode */
38#define MC146818_12HR		0x0004		/* use AM/PM mode */
39
40	/* MD chip register read/write functions */
41	u_int (*sc_mcread)(struct mc146818_softc *, u_int);
42	void (*sc_mcwrite)(struct mc146818_softc *, u_int, u_int);
43	/* MD century get/set functions */
44	u_int (*sc_getcent)(struct mc146818_softc *);
45	void (*sc_setcent)(struct mc146818_softc *, u_int);
46};
47
48void mc146818_attach(struct mc146818_softc *);
49