211 lines
7.3 KiB
C
211 lines
7.3 KiB
C
/* $NetBSD: mcclock_mace.c,v 1.8 2003/01/19 22:26:38 rafal Exp $ */
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/*
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* Copyright (c) 2001 Antti Kantee. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY CAUASLITY LIMITED ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL CAUSALITY LIMITED OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1998 Mark Brinicombe.
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* Copyright (c) 1998 Causality Limited.
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* All rights reserved.
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*
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* Written by Mark Brinicombe, Causality Limited
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Mark Brinicombe
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* for the NetBSD Project.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY CAUASLITY LIMITED ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL CAUSALITY LIMITED OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <machine/cpu.h>
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#include <machine/autoconf.h>
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#include <machine/bus.h>
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#include <machine/machtype.h>
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#include <dev/clock_subr.h>
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#include <dev/ic/ds1687reg.h>
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#include <sgimips/dev/macevar.h>
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#include <sgimips/sgimips/clockvar.h>
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struct mcclock_mace_softc {
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struct device sc_dev;
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bus_space_tag_t sc_st;
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bus_space_handle_t sc_sh;
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};
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static int mcclock_mace_match(struct device *, struct cfdata *, void *);
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static void mcclock_mace_attach(struct device*, struct device *, void *);
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static void mcclock_mace_init(struct device *);
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static void mcclock_mace_get(struct device *, struct clock_ymdhms *);
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static void mcclock_mace_set(struct device *, struct clock_ymdhms *);
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unsigned int ds1687_read(void *arg, unsigned int addr);
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void ds1687_write(void *arg, unsigned int addr, unsigned int data);
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const struct clockfns mcclock_mace_clockfns = {
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mcclock_mace_init, mcclock_mace_get, mcclock_mace_set
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};
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CFATTACH_DECL(mcclock_mace, sizeof(struct mcclock_mace_softc),
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mcclock_mace_match, mcclock_mace_attach, NULL, NULL);
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static int
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mcclock_mace_match(struct device *parent, struct cfdata *match, void *aux)
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{
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return 1;
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}
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void
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mcclock_mace_attach(struct device *parent, struct device *self, void *aux)
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{
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struct mcclock_mace_softc *sc = (void *)self;
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struct mace_attach_args *maa = aux;
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sc->sc_st = maa->maa_st;
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sc->sc_sh = maa->maa_sh;
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/*
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* We want a fixed format: 24-hour, BCD data, so just force the
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* RTC to this mode; if there was junk there we'll be able to
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* fix things up later when we discover the time read back is
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* no good.
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*/
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ds1687_write(sc, DS1687_CONTROLA, DS1687_DV1 | DS1687_BANK1);
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ds1687_write(sc, DS1687_CONTROLB, DS1687_24HRS);
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/* XXXrkb: init kickstart/wakeup stuff */
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if (!(ds1687_read(sc, DS1687_CONTROLD) & DS1687_VRT))
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printf(": lithium cell is dead, RTC unreliable");
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printf("\n");
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clockattach(&sc->sc_dev, &mcclock_mace_clockfns);
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}
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/*
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* We need to use the following two functions from
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* DS1687_PUT/GETTOD(). Hence the names.
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*/
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unsigned int
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ds1687_read(void *arg, unsigned int addr)
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{
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struct mcclock_mace_softc *sc = (struct mcclock_mace_softc *)arg;
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return (bus_space_read_1(sc->sc_st, sc->sc_sh, addr));
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}
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void
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ds1687_write(void *arg, unsigned int addr, unsigned int data)
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{
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struct mcclock_mace_softc *sc = (struct mcclock_mace_softc *)arg;
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bus_space_write_1(sc->sc_st, sc->sc_sh, addr, data);
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}
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static void
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mcclock_mace_init(struct device *dev)
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{
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return;
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}
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static void
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mcclock_mace_get(struct device *dev, struct clock_ymdhms *dt)
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{
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struct mcclock_mace_softc *sc = (struct mcclock_mace_softc *)dev;
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ds1687_todregs regs;
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int s;
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s = splhigh();
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DS1687_GETTOD(sc, ®s);
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splx(s);
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dt->dt_sec = FROMBCD(regs[DS1687_SOFT_SEC]);
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dt->dt_min = FROMBCD(regs[DS1687_SOFT_MIN]);
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dt->dt_hour = FROMBCD(regs[DS1687_SOFT_HOUR]);
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dt->dt_wday = FROMBCD(regs[DS1687_SOFT_DOW]);
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dt->dt_day = FROMBCD(regs[DS1687_SOFT_DOM]);
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dt->dt_mon = FROMBCD(regs[DS1687_SOFT_MONTH]);
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dt->dt_year = FROMBCD(regs[DS1687_SOFT_YEAR]) +
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(100 * FROMBCD(regs[DS1687_SOFT_CENTURY]));
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}
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static void
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mcclock_mace_set(struct device *dev, struct clock_ymdhms *dt)
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{
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struct mcclock_mace_softc *sc = (struct mcclock_mace_softc *)dev;
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ds1687_todregs regs;
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int s;
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memset(®s, 0, sizeof(regs));
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regs[DS1687_SOFT_SEC] = TOBCD(dt->dt_sec);
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regs[DS1687_SOFT_MIN] = TOBCD(dt->dt_min);
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regs[DS1687_SOFT_HOUR] = TOBCD(dt->dt_hour);
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regs[DS1687_SOFT_DOW] = TOBCD(dt->dt_wday);
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regs[DS1687_SOFT_DOM] = TOBCD(dt->dt_day);
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regs[DS1687_SOFT_MONTH] = TOBCD(dt->dt_mon);
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regs[DS1687_SOFT_YEAR] = TOBCD(dt->dt_year % 100);
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regs[DS1687_SOFT_CENTURY] = TOBCD(dt->dt_year / 100);
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s = splhigh();
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DS1687_PUTTOD(sc, ®s);
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splx(s);
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}
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