71e3c3083b
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
130 lines
3.5 KiB
C
130 lines
3.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (C) 2006-2008 Semihalf, Grzegorz Bernacki
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* 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 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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* From: FreeBSD: src/sys/powerpc/mpc85xx/ds1553_bus_lbc.c,v 1.2 2009/06/24 15:48:20 raj
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/clock.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/resource.h>
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#include <sys/rman.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include "ds1553_reg.h"
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#include "clock_if.h"
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static devclass_t rtc_devclass;
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static int rtc_attach(device_t dev);
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static int rtc_probe(device_t dev);
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static device_method_t rtc_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, rtc_probe),
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DEVMETHOD(device_attach, rtc_attach),
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/* clock interface */
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DEVMETHOD(clock_gettime, ds1553_gettime),
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DEVMETHOD(clock_settime, ds1553_settime),
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{ 0, 0 }
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};
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static driver_t rtc_driver = {
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"rtc",
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rtc_methods,
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sizeof(struct ds1553_softc),
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};
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DRIVER_MODULE(rtc, lbc, rtc_driver, rtc_devclass, 0, 0);
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static int
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rtc_probe(device_t dev)
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{
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if (!ofw_bus_is_compatible(dev, "dallas,ds1553"))
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return (ENXIO);
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device_set_desc(dev, "Dallas Semiconductor DS1553 RTC");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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rtc_attach(device_t dev)
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{
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struct timespec ts;
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struct ds1553_softc *sc;
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int error;
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sc = device_get_softc(dev);
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bzero(sc, sizeof(struct ds1553_softc));
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mtx_init(&sc->sc_mtx, "rtc_mtx", NULL, MTX_SPIN);
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sc->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->rid,
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RF_ACTIVE);
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if (sc->res == NULL) {
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device_printf(dev, "cannot allocate resources\n");
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mtx_destroy(&sc->sc_mtx);
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return (ENXIO);
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}
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sc->sc_bst = rman_get_bustag(sc->res);
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sc->sc_bsh = rman_get_bushandle(sc->res);
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if ((error = ds1553_attach(dev)) != 0) {
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device_printf(dev, "cannot attach time of day clock\n");
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bus_release_resource(dev, SYS_RES_MEMORY, sc->rid, sc->res);
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mtx_destroy(&sc->sc_mtx);
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return (error);
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}
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clock_register(dev, 1000000);
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if (bootverbose) {
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ds1553_gettime(dev, &ts);
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device_printf(dev, "current time: %ld.%09ld\n",
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(long)ts.tv_sec, ts.tv_nsec);
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}
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return (0);
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}
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