116 lines
3.7 KiB
C
116 lines
3.7 KiB
C
/* $NetBSD: ixdp425_led.c,v 1.1 2003/05/31 01:16:32 ichiro Exp $ */
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/*
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* Copyright (c) 2003
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* Ichiro FUKUHARA <ichiro@ichiro.org>.
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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 Ichiro FUKUHARA.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR
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* 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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ixdp425_led.c,v 1.1 2003/05/31 01:16:32 ichiro Exp $");
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/*
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* LED support for IXDP425
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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 <machine/bus.h>
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#include <arm/xscale/ixp425_sipvar.h>
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#include <arm/xscale/ixp425var.h>
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static int ixdpled_match(struct device *, struct cfdata *, void *);
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static void ixdpled_attach(struct device *, struct device *, void *);
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static void ixdpled_callout(void *);
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extern void ixp425_expbus_init(void);
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struct ixdpled_softc {
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struct device sc_dev;
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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(ixdpled, sizeof(struct ixdpled_softc),
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ixdpled_match, ixdpled_attach, NULL, NULL);
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static int
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ixdpled_match(struct device *parent, struct cfdata *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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ixdpled_attach(struct device *parent, struct device *self, void *aux)
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{
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struct ixdpled_softc* sc = (struct ixdpled_softc*) 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(sc->sc_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", self->dv_xname);
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return;
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}
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IXPREG(IXP425_EXP_VBASE + EXP_TIMING_CS2_OFFSET) =
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IXP425_EXP_ADDR_T(3) | IXP425_EXP_SETUP_T(3) |
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IXP425_EXP_STROBE_T(15) | IXP425_EXP_HOLD_T(3) |
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IXP425_EXP_RECOVERY_T(15) | EXP_SZ_512 | EXP_WR_EN |
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IXP425_EXP_CS_EN;
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callout_init(&sc->sc_co);
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callout_reset(&sc->sc_co, hz / 5, ixdpled_callout, sc);
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}
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static void
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ixdpled_callout(void *arg)
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{
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struct ixdpled_softc* sc = arg;
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bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0,
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0x1000 + (sc->sc_pos++ % 16));
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callout_reset(&sc->sc_co, hz / 5, ixdpled_callout, sc);
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}
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