1/*-
2 * Copyright (c) 2003 Izumi Tsutsui.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 *	$NetBSD: mc146818var.h,v 1.7 2008/05/14 13:29:29 tsutsui Exp $
25 *
26 * $FreeBSD$
27 */
28
29struct mc146818_softc {
30	bus_space_tag_t	sc_bst;			/* bus space tag */
31	bus_space_handle_t sc_bsh;		/* bus space handle */
32
33	struct mtx sc_mtx;			/* hardware mutex */
34
35	u_char sc_rega;				/* register A */
36	u_char sc_regb;				/* register B */
37
38	u_int sc_year0;				/* year counter offset */
39
40	u_int sc_flag;				/* MD flags */
41#define	MC146818_NO_CENT_ADJUST	0x0001		/* don't adjust century */
42#define	MC146818_BCD		0x0002		/* use BCD mode */
43#define	MC146818_12HR		0x0004		/* use AM/PM mode */
44
45	/* MD chip register read/write functions */
46	u_int (*sc_mcread)(device_t dev, u_int reg);
47	void (*sc_mcwrite)(device_t dev, u_int reg, u_int val);
48	/* MD century get/set functions */
49	u_int (*sc_getcent)(device_t dev);
50	void (*sc_setcent)(device_t dev, u_int cent);
51};
52
53/* Default read/write functions */
54u_int mc146818_def_read(device_t dev, u_int reg);
55void mc146818_def_write(device_t dev, u_int reg, u_int val);
56
57/* Chip attach function */
58int mc146818_attach(device_t);
59
60/* Methods for the clock interface */
61#ifdef notyet
62int mc146818_getsecs(device_t dev, int *secp);
63#endif
64int mc146818_gettime(device_t dev, struct timespec *ts);
65int mc146818_settime(device_t dev, struct timespec *ts);
66