Current Path : /sys/powerpc/mpc85xx/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/powerpc/mpc85xx/ds1553_bus_fdt.c |
/*- * Copyright (C) 2006-2008 Semihalf, Grzegorz Bernacki * 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 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. * * From: FreeBSD: src/sys/powerpc/mpc85xx/ds1553_bus_lbc.c,v 1.2 2009/06/24 15:48:20 raj */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/powerpc/mpc85xx/ds1553_bus_fdt.c 209908 2010-07-11 21:08:29Z raj $"); #include <sys/cdefs.h> #include <sys/param.h> #include <sys/systm.h> #include <sys/bus.h> #include <sys/clock.h> #include <sys/kernel.h> #include <sys/lock.h> #include <sys/module.h> #include <sys/mutex.h> #include <sys/resource.h> #include <sys/rman.h> #include <machine/bus.h> #include <machine/resource.h> #include <dev/ofw/ofw_bus_subr.h> #include "ds1553_reg.h" #include "clock_if.h" static devclass_t rtc_devclass; static int rtc_attach(device_t dev); static int rtc_probe(device_t dev); static device_method_t rtc_methods[] = { /* Device interface */ DEVMETHOD(device_probe, rtc_probe), DEVMETHOD(device_attach, rtc_attach), /* clock interface */ DEVMETHOD(clock_gettime, ds1553_gettime), DEVMETHOD(clock_settime, ds1553_settime), { 0, 0 } }; static driver_t rtc_driver = { "rtc", rtc_methods, sizeof(struct ds1553_softc), }; DRIVER_MODULE(rtc, lbc, rtc_driver, rtc_devclass, 0, 0); static int rtc_probe(device_t dev) { if (!ofw_bus_is_compatible(dev, "dallas,ds1553")) return (ENXIO); device_set_desc(dev, "Dallas Semiconductor DS1553 RTC"); return (BUS_PROBE_DEFAULT); } static int rtc_attach(device_t dev) { struct timespec ts; struct ds1553_softc *sc; int error; sc = device_get_softc(dev); bzero(sc, sizeof(struct ds1553_softc)); mtx_init(&sc->sc_mtx, "rtc_mtx", NULL, MTX_SPIN); sc->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->rid, RF_ACTIVE); if (sc->res == NULL) { device_printf(dev, "cannot allocate resources\n"); mtx_destroy(&sc->sc_mtx); return (ENXIO); } sc->sc_bst = rman_get_bustag(sc->res); sc->sc_bsh = rman_get_bushandle(sc->res); if ((error = ds1553_attach(dev)) != 0) { device_printf(dev, "cannot attach time of day clock\n"); bus_release_resource(dev, SYS_RES_MEMORY, sc->rid, sc->res); mtx_destroy(&sc->sc_mtx); return (error); } clock_register(dev, 1000000); if (bootverbose) { ds1553_gettime(dev, &ts); device_printf(dev, "current time: %ld.%09ld\n", (long)ts.tv_sec, ts.tv_nsec); } return (0); }