105 lines
3.5 KiB
C
105 lines
3.5 KiB
C
/*
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* Copyright (c) 2007 Microsoft
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Microsoft
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTERS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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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/*
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* obio attachment for OMAP watchdog timers
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*/
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#include "opt_omap.h"
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: obio_wdt.c,v 1.5 2011/07/01 20:30:21 dyoung Exp $");
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#include <sys/param.h>
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#include <sys/callout.h>
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#include <sys/cdefs.h>
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#include <sys/device.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/wdog.h>
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#include <machine/param.h>
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#include <sys/bus.h>
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#include <dev/sysmon/sysmonvar.h>
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#include <arm/omap/omap2_obiovar.h>
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#include <arm/omap/omap_wdtvar.h>
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#include <arm/omap/omap_wdtreg.h>
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static int obiowdt32k_match(device_t, cfdata_t, void *);
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static void obiowdt32k_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(obiowdt32k, sizeof(struct omapwdt32k_softc),
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obiowdt32k_match, obiowdt32k_attach, NULL, NULL);
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static int
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obiowdt32k_match(device_t parent, cfdata_t cf, 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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obiowdt32k_attach(device_t parent, device_t self, void *aux)
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{
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struct omapwdt32k_softc *sc = device_private(self);
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struct obio_attach_args *obio = aux;
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unsigned int val;
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sc->sc_dev = self;
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sc->sc_smw.smw_name = device_xname(sc->sc_dev);
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sc->sc_smw.smw_cookie = sc;
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sc->sc_smw.smw_setmode = omapwdt32k_setmode;
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sc->sc_smw.smw_tickle = omapwdt32k_tickle;
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sc->sc_smw.smw_period = OMAPWDT32K_DEFAULT_PERIOD;
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sc->sc_iot = obio->obio_iot;
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if (bus_space_map(sc->sc_iot, obio->obio_addr, obio->obio_size,
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0, &sc->sc_ioh))
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panic("%s: Cannot map registers", device_xname(self));
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val = bus_space_read_4(sc->sc_iot, sc->sc_ioh, WIDR);
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aprint_normal(": rev %d.%d\n", (val & WD_REV) >> 4,
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(val & WD_REV & 0xf));
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if (sysmon_wdog_register(&sc->sc_smw) != 0)
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aprint_error("%s: unable to register with sysmon\n",
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device_xname(sc->sc_dev));
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omapwdt32k_sc = sc;
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/* Turn on autoidle. */
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omapwdt_sysconfig =
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bus_space_read_4(omapwdt32k_sc->sc_iot,
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omapwdt32k_sc->sc_ioh, WD_SYSCONFIG) |
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(1 << WD_SYSCONFIG_AUTOIDLE);
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bus_space_write_4(omapwdt32k_sc->sc_iot, omapwdt32k_sc->sc_ioh,
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WD_SYSCONFIG, omapwdt_sysconfig);
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}
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