395 lines
8.4 KiB
C
395 lines
8.4 KiB
C
/* $NetBSD: vrled.c,v 1.6 2002/10/02 05:26:56 thorpej Exp $ */
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/*
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* Copyright (c) 2000 SATO Kazumi. 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 THE 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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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/reboot.h>
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#include <machine/bus.h>
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#include <machine/config_hook.h>
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#include <hpcmips/vr/vripif.h>
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#include <hpcmips/vr/vrledvar.h>
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#include <hpcmips/vr/vrledreg.h>
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#ifdef VRLEDDEBUG
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#ifndef VRLEDDEBUG_CONF
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#define VRLEDDEBUG_CONF 0
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#endif /* VRLEDDEBUG_CONF */
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int vrleddebug = VRLEDDEBUG_CONF;
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#define DPRINTF(arg) if (vrleddebug) printf arg;
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#define VPRINTF(arg) if (bootverbose||vrleddebug) printf arg;
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#else /* VRLEDDEBUG */
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#define DPRINTF(arg)
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#define VPRINTF(arg) if (bootverbose) printf arg;
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#endif /* VRLEDDEBUG */
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static int vrledmatch(struct device *, struct cfdata *, void *);
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static void vrledattach(struct device *, struct device *, void *);
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static void vrled_write(struct vrled_softc *, int, unsigned short);
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static unsigned short vrled_read(struct vrled_softc *, int);
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static void vrled_stop(struct vrled_softc *);
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static void vrled_on(struct vrled_softc *);
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static void vrled_blink(struct vrled_softc *);
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static void vrled_flash(struct vrled_softc *);
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static void vrled_change_state(struct vrled_softc *);
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static int vrled_event(void *, int, long, void *);
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int vrled_intr(void *);
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CFATTACH_DECL(vrled, sizeof(struct vrled_softc),
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vrledmatch, vrledattach, NULL, NULL);
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struct vrled_softc *this_led;
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static inline void
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vrled_write(struct vrled_softc *sc, int port, unsigned short val)
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{
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bus_space_write_2(sc->sc_iot, sc->sc_ioh, port, val);
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}
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static inline unsigned short
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vrled_read(struct vrled_softc *sc, int port)
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{
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return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, port));
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}
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static int
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vrledmatch(struct device *parent, struct cfdata *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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vrledattach(struct device *parent, struct device *self, void *aux)
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{
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struct vrled_softc *sc = (struct vrled_softc *)self;
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struct vrip_attach_args *va = aux;
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bus_space_tag_t iot = va->va_iot;
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bus_space_handle_t ioh;
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if (bus_space_map(iot, va->va_addr, 1, 0, &ioh)) {
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printf(": can't map bus space\n");
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return;
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}
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sc->sc_iot = iot;
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sc->sc_ioh = ioh;
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if (!(sc->sc_handler =
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vrip_intr_establish(va->va_vc, va->va_unit, 0, IPL_TTY,
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vrled_intr, sc))) {
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printf (": can't map interrupt line.\n");
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return;
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}
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printf("\n");
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/* clear interrupt status */
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vrled_write(sc, LEDINT_REG_W, LEDINT_ALL);
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/* basic setup */
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sc->sc_state_cnt = 1;
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vrled_write(sc, LEDASTC_REG_W, 1); /* 1time */
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vrled_write(sc, LEDCNT_REG_W, LEDCNT_AUTOSTOP);
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vrled_stop(sc);
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sc->sc_hook = config_hook(CONFIG_HOOK_SET,
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CONFIG_HOOK_LED, CONFIG_HOOK_SHARE, vrled_event, sc);
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this_led = sc;
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}
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/*
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* LED interrupt handler.
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*
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*/
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int
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vrled_intr(void *arg)
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{
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struct vrled_softc *sc = arg;
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unsigned int intstat;
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intstat = vrled_read(sc, LEDINT_REG_W);
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/* clear interrupt status */
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vrled_write(sc, LEDINT_REG_W, intstat);
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if (intstat&LEDINT_AUTOSTOP) {
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vrled_change_state(sc);
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}
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return (0);
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}
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/*
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* LED turn OFF
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*
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*/
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void
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vrled_stop(struct vrled_softc *sc)
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{
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vrled_write(sc, LEDHTS_REG_W, LEDHTS_DIV16SEC);
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vrled_write(sc, LEDLTS_REG_W, LEDLTS_4SEC);
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vrled_write(sc, LEDASTC_REG_W, 2); /* 2time */
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vrled_write(sc, LEDCNT_REG_W, LEDCNT_AUTOSTOP);
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sc->sc_state = LEDOFF;
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sc->sc_next = LEDOFF;
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}
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/*
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* LED turn ON
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*
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*/
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void
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vrled_on(struct vrled_softc *sc)
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{
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vrled_write(sc, LEDHTS_REG_W, LEDHTS_SEC);
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vrled_write(sc, LEDLTS_REG_W, LEDLTS_DIV16SEC);
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vrled_write(sc, LEDASTC_REG_W, 2); /* 2time */
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vrled_write(sc, LEDCNT_REG_W, LEDCNT_AUTOSTOP|LEDCNT_BLINK);
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sc->sc_state = LEDON;
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sc->sc_next = LEDON;
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}
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/*
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* LED blink
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*
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*/
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void
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vrled_blink(struct vrled_softc *sc)
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{
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int ledhts;
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int ledlts;
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switch (sc->sc_next) {
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case LED1SB:
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ledhts = LEDHTS_DIV2SEC;
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ledlts = LEDLTS_DIV2SEC;
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break;
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case LED2SB:
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ledhts = LEDHTS_SEC;
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ledlts = LEDLTS_SEC;
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break;
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default:
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vrled_stop(sc);
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return;
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}
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vrled_write(sc, LEDHTS_REG_W, ledhts);
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vrled_write(sc, LEDLTS_REG_W, ledlts);
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vrled_write(sc, LEDASTC_REG_W, 2); /* 2time */
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vrled_write(sc, LEDCNT_REG_W, LEDCNT_AUTOSTOP);
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vrled_write(sc, LEDCNT_REG_W, LEDCNT_AUTOSTOP|LEDCNT_BLINK);
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sc->sc_state = sc->sc_next;
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}
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/*
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* LED flash once
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*
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*/
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void
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vrled_flash(struct vrled_softc *sc)
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{
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int ledhts;
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int ledlts;
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switch (sc->sc_next) {
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case LED8DIVF:
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ledhts = LEDHTS_DIV16SEC;
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ledlts = LEDLTS_DIV16SEC;
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break;
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case LED4DIVF:
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ledhts = LEDHTS_DIV8SEC;
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ledlts = LEDLTS_DIV8SEC;
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break;
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case LED2DIVF:
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ledhts = LEDHTS_DIV4SEC;
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ledlts = LEDLTS_DIV4SEC;
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break;
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case LED1SF:
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ledhts = LEDHTS_DIV2SEC;
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ledlts = LEDLTS_DIV2SEC;
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break;
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default:
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vrled_stop(sc);
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return;
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}
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vrled_write(sc, LEDHTS_REG_W, ledhts);
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vrled_write(sc, LEDLTS_REG_W, ledlts);
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vrled_write(sc, LEDASTC_REG_W, 2); /* 2time */
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vrled_write(sc, LEDCNT_REG_W, LEDCNT_AUTOSTOP|LEDCNT_BLINK);
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sc->sc_state = sc->sc_next;
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sc->sc_next = LEDOFF;
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sc->sc_state_cnt = 1;
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}
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/*
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* Change LED state
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*
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*/
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void
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vrled_change_state(struct vrled_softc *sc)
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{
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switch (sc->sc_next) {
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case LEDOFF:
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vrled_stop(sc);
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break;
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case LEDON:
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vrled_on(sc);
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break;
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case LED1SB:
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case LED2SB:
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vrled_blink(sc);
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break;
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case LED8DIVF:
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case LED4DIVF:
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case LED2DIVF:
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case LED1SF:
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vrled_flash(sc);
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break;
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default:
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vrled_stop(sc);
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break;
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}
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}
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/*
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* Set LED state
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*
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*/
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void
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vrled_set_state(struct vrled_softc *sc, vrled_status state)
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{
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int ledstate;
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ledstate = vrled_read(sc, LEDCNT_REG_W);
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if (ledstate&LEDCNT_BLINK) { /* currently processing */
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if (sc->sc_next == state)
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sc->sc_state_cnt++;
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switch (sc->sc_next) {
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case LEDOFF:
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case LEDON:
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sc->sc_next = state;
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break;
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case LED8DIVF:
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case LED4DIVF:
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case LED2DIVF:
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case LED1SF:
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switch (state) {
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case LEDOFF:
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case LED8DIVF:
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case LED4DIVF:
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case LED2DIVF:
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case LED1SF:
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sc->sc_next = state;
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break;
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default:
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break;
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}
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break;
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case LED1SB:
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case LED2SB:
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switch (state) {
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case LEDOFF:
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case LEDON:
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case LED1SB:
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case LED2SB:
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sc->sc_next = state;
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break;
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default:
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break;
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}
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break;
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default:
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sc->sc_next = LEDOFF;
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break;
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}
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return;
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}
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sc->sc_next = state;
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vrled_change_state(sc);
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}
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/*
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* LED config hook events
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*
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*/
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int
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vrled_event(void *ctx, int type, long id, void *msg)
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{
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struct vrled_softc *sc = (struct vrled_softc *)ctx;
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int why =*(int *)msg;
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if (type != CONFIG_HOOK_SET
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|| id != CONFIG_HOOK_LED)
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return (1);
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if (msg == NULL)
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return (1);
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switch (why) {
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case CONFIG_HOOK_LED_OFF:
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vrled_set_state(sc, LEDOFF);
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break;
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case CONFIG_HOOK_LED_ON:
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vrled_set_state(sc, LEDON);
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break;
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case CONFIG_HOOK_LED_FLASH:
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vrled_set_state(sc, LED8DIVF);
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break;
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case CONFIG_HOOK_LED_FLASH2:
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vrled_set_state(sc, LED4DIVF);
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break;
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case CONFIG_HOOK_LED_FLASH5:
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vrled_set_state(sc, LED2DIVF);
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break;
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case CONFIG_HOOK_LED_BLINK:
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vrled_set_state(sc, LED1SB);
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break;
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case CONFIG_HOOK_LED_BLINK2:
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vrled_set_state(sc, LED2SB);
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break;
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default:
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vrled_set_state(sc, LEDOFF);
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}
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return (0);
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}
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/* end */
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