/* $NetBSD: eprtc.c,v 1.2 2006/09/04 23:45:30 gdamore Exp $ */ /* * Copyright (c) 2005 HAMAJIMA Katsuomi. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: eprtc.c,v 1.2 2006/09/04 23:45:30 gdamore Exp $"); #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/device.h> #include <dev/clock_subr.h> #include <machine/bus.h> #include <arm/ep93xx/ep93xxvar.h> #include <arm/ep93xx/epsocvar.h> #include <arm/ep93xx/eprtcreg.h> struct eprtc_softc { struct device sc_dev; bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; struct todr_chip_handle sc_todr; }; static int eprtc_match(struct device *, struct cfdata *, void *); static void eprtc_attach(struct device *, struct device *, void *); CFATTACH_DECL(eprtc, sizeof(struct eprtc_softc), eprtc_match, eprtc_attach, NULL, NULL); static int eprtc_gettime(struct todr_chip_handle *, volatile struct timeval *); static int eprtc_settime(struct todr_chip_handle *, volatile struct timeval *); static int eprtc_match(struct device *parent, struct cfdata *match, void *aux) { return 1; } static void eprtc_attach(struct device *parent, struct device *self, void *aux) { struct eprtc_softc *sc = (struct eprtc_softc*)self; struct epsoc_attach_args *sa = aux; printf("\n"); sc->sc_iot = sa->sa_iot; if (bus_space_map(sa->sa_iot, sa->sa_addr, sa->sa_size, 0, &sc->sc_ioh)){ printf("%s: Cannot map registers", self->dv_xname); return; } sc->sc_todr.cookie = sc; sc->sc_todr.todr_gettime = eprtc_gettime; sc->sc_todr.todr_settime = eprtc_settime; sc->sc_todr.todr_setwen = NULL; todr_attach(&sc->sc_todr); } static int eprtc_gettime(struct todr_chip_handle *ch, volatile struct timeval *tv) { struct eprtc_softc *sc = ch->cookie;; tv->tv_sec = bus_space_read_4(sc->sc_iot, sc->sc_ioh, EP93XX_RTC_Data); tv->tv_usec = 0; return 0; } static int eprtc_settime(struct todr_chip_handle *ch, volatile struct timeval *tv) { struct eprtc_softc *sc = ch->cookie;; bus_space_write_4(sc->sc_iot, sc->sc_ioh, EP93XX_RTC_Load, tv->tv_sec); return 0; }