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d1d3233ebd
The following systems are affected:
- MPC8555CDS
- MPC8572DS
This overhaul covers the following major changes:
- All integrated peripherals drivers for Freescale MPC85XX SoC, which are
currently in the FreeBSD source tree are reworked and adjusted so they
derive config data out of the device tree blob (instead of hard coded /
tabelarized values).
- This includes: LBC, PCI / PCI-Express, I2C, DS1553, OpenPIC, TSEC, SEC,
QUICC, UART, CFI.
- Thanks to the common FDT infrastrucutre (fdtbus, simplebus) we retire
ocpbus(4) driver, which was based on hard-coded config data.
Note that world for these platforms has to be built WITH_FDT.
Reviewed by: imp
Sponsored by: The FreeBSD Foundation
128 lines
3.5 KiB
C
128 lines
3.5 KiB
C
/*-
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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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