116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
/* $NetBSD: nappi_nr.c,v 1.11 2012/10/27 17:17:48 chs Exp $ */
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/*
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Ichiro FUKUHARA and Naoto Shimazaki.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: nappi_nr.c,v 1.11 2012/10/27 17:17:48 chs Exp $");
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/*
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* LED support for NAPPI.
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*/
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/callout.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/bus.h>
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#include <arm/ixp12x0/ixpsipvar.h>
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static int nappinr_match(device_t, cfdata_t, void *);
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static void nappinr_attach(device_t, device_t, void *);
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#if 0
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static int nappinr_activate(device_t, enum devact);
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#endif
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static void nappinr_callout(void *);
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struct nappinr_softc {
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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bus_addr_t sc_baseaddr;
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bus_space_handle_t sc_pos;
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struct callout sc_co;
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};
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CFATTACH_DECL_NEW(nappinr, sizeof(struct nappinr_softc),
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nappinr_match, nappinr_attach, NULL, NULL);
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static int
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nappinr_match(device_t parent, cfdata_t match, 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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nappinr_attach(device_t parent, device_t self, void *aux)
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{
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struct nappinr_softc* sc = device_private(self);
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struct ixpsip_attach_args* sa = aux;
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printf("\n");
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sc->sc_iot = sa->sa_iot;
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sc->sc_baseaddr = sa->sa_addr;
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if (bus_space_map(sa->sa_iot, sa->sa_addr, sa->sa_size, 0,
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&sc->sc_ioh)) {
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printf("%s: unable to map registers\n", device_xname(self));
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return;
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}
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callout_init(&sc->sc_co, 0);
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callout_reset(&sc->sc_co, hz / 10, nappinr_callout, sc);
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}
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#if 0
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static int
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nappinr_activate(device_t self, enum devact act)
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{
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printf("nappinr_activate act=%d\n", act);
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return 0;
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}
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#endif
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static void
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nappinr_callout(void *arg)
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{
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static const int ptn[] = { 1, 2, 4, 8, 4, 2 };
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struct nappinr_softc *sc = arg;
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uint32_t v;
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v = ptn[sc->sc_pos++ % 6];
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v |= ptn[sc->sc_pos++ % 6] << 4;
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, 0, v);
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callout_reset(&sc->sc_co, hz / 10, nappinr_callout, sc);
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}
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