1 /* $NetBSD: mm58167var.h,v 1.6 2008/07/06 13:29:50 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matthew Fredette. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _MM58167VAR_H 33 #define _MM58167VAR_H 34 35 /* 36 * Driver support for the National Semiconductor MM58167 37 * time-of-day chip. See 38 * http://www.national.com/ds/MM/MM58167B.pdf for data sheets. 39 */ 40 41 struct mm58167_softc { 42 device_t mm58167_dev; 43 44 /* Pointers to bus_space */ 45 bus_space_tag_t mm58167_regt; 46 bus_space_handle_t mm58167_regh; 47 48 /* 49 * Pointers to MM58167 registers. All of these values are in 50 * BCD. 51 */ 52 53 /* 54 * The most significant digit of this first value is the 55 * milliseconds unit; least significant digit is undefined: 56 */ 57 bus_size_t mm58167_msec_xxx; 58 /* both digits of this value make up centiseconds: */ 59 bus_size_t mm58167_csec; 60 bus_size_t mm58167_sec; 61 bus_size_t mm58167_min; 62 bus_size_t mm58167_hour; 63 bus_size_t mm58167_wday; 64 bus_size_t mm58167_day; 65 bus_size_t mm58167_mon; 66 67 /* 68 * The MM58167 has compare latches that line up with the 69 * above, interrupt registers, etc., but we don't use them, so 70 * we don't mention them here. 71 */ 72 bus_size_t mm58167_status; /* bad counter read status */ 73 bus_size_t mm58167_go; /* GO - start at integral seconds */ 74 75 /* 76 * We keep a TODR handle in the softc to save 77 * us from having to allocate it ourselves. 78 * However, only mm58167.c should know this. 79 */ 80 struct todr_chip_handle _mm58167_todr_handle; 81 }; 82 83 todr_chip_handle_t mm58167_attach(struct mm58167_softc *); 84 85 #endif /* _MM58167VAR_H */ 86