103 lines
3.3 KiB
C
103 lines
3.3 KiB
C
/* $NetBSD: eprtc.c,v 1.4 2010/01/05 13:14:56 mbalmer Exp $ */
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/*
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* Copyright (c) 2005 HAMAJIMA Katsuomi. 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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
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* OR 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/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: eprtc.c,v 1.4 2010/01/05 13:14:56 mbalmer Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <dev/clock_subr.h>
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#include <machine/bus.h>
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#include <arm/ep93xx/ep93xxvar.h>
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#include <arm/ep93xx/epsocvar.h>
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#include <arm/ep93xx/eprtcreg.h>
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struct eprtc_softc {
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struct device sc_dev;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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struct todr_chip_handle sc_todr;
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};
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static int eprtc_match(struct device *, struct cfdata *, void *);
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static void eprtc_attach(struct device *, struct device *, void *);
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CFATTACH_DECL(eprtc, sizeof(struct eprtc_softc),
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eprtc_match, eprtc_attach, NULL, NULL);
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static int eprtc_gettime(struct todr_chip_handle *, struct timeval *);
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static int eprtc_settime(struct todr_chip_handle *, struct timeval *);
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static int
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eprtc_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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static void
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eprtc_attach(struct device *parent, struct device *self, void *aux)
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{
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struct eprtc_softc *sc = (struct eprtc_softc*)self;
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struct epsoc_attach_args *sa = aux;
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printf("\n");
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sc->sc_iot = sa->sa_iot;
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if (bus_space_map(sa->sa_iot, sa->sa_addr,
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sa->sa_size, 0, &sc->sc_ioh)){
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printf("%s: Cannot map registers", self->dv_xname);
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return;
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}
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sc->sc_todr.cookie = sc;
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sc->sc_todr.todr_gettime = eprtc_gettime;
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sc->sc_todr.todr_settime = eprtc_settime;
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sc->sc_todr.todr_setwen = NULL;
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todr_attach(&sc->sc_todr);
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}
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static int
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eprtc_gettime(struct todr_chip_handle *ch, struct timeval *tv)
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{
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struct eprtc_softc *sc = ch->cookie;
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tv->tv_sec = bus_space_read_4(sc->sc_iot, sc->sc_ioh, EP93XX_RTC_Data);
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tv->tv_usec = 0;
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return 0;
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}
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static int
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eprtc_settime(struct todr_chip_handle *ch, struct timeval *tv)
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{
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struct eprtc_softc *sc = ch->cookie;
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, EP93XX_RTC_Load, tv->tv_sec);
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return 0;
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}
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