sys/dev/ic/mc146818var.h

   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
  27 struct 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
  48 void mc146818_attach(struct mc146818_softc *);