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mcclock_jazzio.c revision 1.3 
      1 /*	$NetBSD: mcclock_jazzio.c,v 1.3 2002/10/02 04:59:49 thorpej Exp $	*/
      2 /*	$OpenBSD: clock_mc.c,v 1.9 1998/03/16 09:38:26 pefo Exp $	*/
      3 /*	NetBSD: clock_mc.c,v 1.2 1995/06/28 04:30:30 cgd Exp 	*/
      4 
      5 /*
      6  * Copyright (c) 1988 University of Utah.
      7  * Copyright (c) 1992, 1993
      8  *	The Regents of the University of California.  All rights reserved.
      9  *
     10  * This code is derived from software contributed to Berkeley by
     11  * the Systems Programming Group of the University of Utah Computer
     12  * Science Department and Ralph Campbell.
     13  *
     14  * Redistribution and use in source and binary forms, with or without
     15  * modification, are permitted provided that the following conditions
     16  * are met:
     17  * 1. Redistributions of source code must retain the above copyright
     18  *    notice, this list of conditions and the following disclaimer.
     19  * 2. Redistributions in binary form must reproduce the above copyright
     20  *    notice, this list of conditions and the following disclaimer in the
     21  *    documentation and/or other materials provided with the distribution.
     22  * 3. All advertising materials mentioning features or use of this software
     23  *    must display the following acknowledgement:
     24  *	This product includes software developed by the University of
     25  *	California, Berkeley and its contributors.
     26  * 4. Neither the name of the University nor the names of its contributors
     27  *    may be used to endorse or promote products derived from this software
     28  *    without specific prior written permission.
     29  *
     30  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     31  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     32  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     33  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     34  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     35  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     36  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     37  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     38  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     39  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     40  * SUCH DAMAGE.
     41  *
     42  * from: Utah Hdr: clock.c 1.18 91/01/21
     43  *
     44  *	@(#)clock.c	8.1 (Berkeley) 6/10/93
     45  */
     46 
     47 #include <sys/param.h>
     48 #include <sys/systm.h>
     49 #include <sys/device.h>
     50 
     51 #include <machine/autoconf.h>
     52 #include <machine/bus.h>
     53 
     54 #include <dev/ic/mc146818reg.h>
     55 
     56 #include <arc/dev/mcclockvar.h>
     57 #include <arc/jazz/jazziovar.h>
     58 #include <arc/jazz/mcclock_jazziovar.h>
     59 
     60 int mcclock_jazzio_match __P((struct device *, struct cfdata *, void *));
     61 void mcclock_jazzio_attach __P((struct device *, struct device *, void *));
     62 
     63 CFATTACH_DECL(mcclock_jazzio, sizeof(struct mcclock_softc),
     64     mcclock_jazzio_match, mcclock_jazzio_attach, NULL, NULL);
     65 
     66 struct mcclock_jazzio_config *mcclock_jazzio_conf = NULL;
     67 int mcclock_jazzio_found = 0;
     68 
     69 int
     70 mcclock_jazzio_match(parent, match, aux)
     71 	struct device *parent;
     72 	struct cfdata *match;
     73 	void *aux;
     74 {
     75 	struct jazzio_attach_args *ja = aux;
     76 
     77 	/* make sure that we're looking for this type of device. */
     78 	if (strcmp(ja->ja_name, "dallas_rtc") != 0)
     79 		return (0);
     80 
     81 	if (mcclock_jazzio_found)
     82 		return (0);
     83 
     84 	return (1);
     85 }
     86 
     87 void
     88 mcclock_jazzio_attach(parent, self, aux)
     89 	struct device *parent;
     90 	struct device *self;
     91 	void *aux;
     92 {
     93 	struct mcclock_softc *sc = (struct mcclock_softc *)self;
     94 	struct jazzio_attach_args *ja = aux;
     95 
     96 	if (mcclock_jazzio_conf == NULL)
     97 		panic("mcclock_jazzio_conf isn't initialized");
     98 
     99 	sc->sc_iot = ja->ja_bust;
    100 	if (bus_space_map(sc->sc_iot,
    101 	    ja->ja_addr, mcclock_jazzio_conf->mjc_iosize, 0, &sc->sc_ioh)) {
    102 		printf(": unable to map I/O space\n");
    103 		return;
    104 	}
    105 
    106 	mcclock_attach(sc, &mcclock_jazzio_conf->mjc_mcbusfns, 80);
    107 
    108 	/* Turn interrupts off, just in case. */
    109 	mc146818_write(sc, MC_REGB, MC_REGB_BINARY | MC_REGB_24HR);
    110 
    111 	mcclock_jazzio_found = 1;
    112 }
    113