1 /* $NetBSD: nappi_nr.c,v 1.3 2002/10/02 05:10:36 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Ichiro FUKUHARA and Naoto Shimazaki. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * LED support for NAPPI. 41 */ 42 43 #include <sys/param.h> 44 #include <sys/types.h> 45 #include <sys/callout.h> 46 #include <sys/device.h> 47 #include <sys/kernel.h> 48 #include <sys/systm.h> 49 50 #include <machine/bus.h> 51 52 #include <arm/ixp12x0/ixpsipvar.h> 53 54 static int nappinr_match(struct device *, struct cfdata *, void *); 55 static void nappinr_attach(struct device *, struct device *, void *); 56 #if 0 57 static int nappinr_activate(struct device *, enum devact); 58 #endif 59 static void nappinr_callout(void *); 60 61 struct nappinr_softc { 62 struct device sc_dev; 63 bus_space_tag_t sc_iot; 64 bus_space_handle_t sc_ioh; 65 bus_addr_t sc_baseaddr; 66 bus_space_handle_t sc_pos; 67 struct callout sc_co; 68 }; 69 70 CFATTACH_DECL(nappinr, sizeof(struct nappinr_softc), 71 nappinr_match, nappinr_attach, NULL, NULL); 72 73 static int 74 nappinr_match(struct device *parent, struct cfdata *match, void *aux) 75 { 76 return (1); 77 } 78 79 static void 80 nappinr_attach(struct device *parent, struct device *self, void *aux) 81 { 82 struct nappinr_softc* sc = (struct nappinr_softc*) self; 83 struct ixpsip_attach_args* sa = aux; 84 85 printf("\n"); 86 87 sc->sc_iot = sa->sa_iot; 88 sc->sc_baseaddr = sa->sa_addr; 89 90 if(bus_space_map(sa->sa_iot, sa->sa_addr, sa->sa_size, 0, 91 &sc->sc_ioh)) { 92 printf("%s: unable to map registers\n", self->dv_xname); 93 return; 94 } 95 96 callout_init(&sc->sc_co); 97 callout_reset(&sc->sc_co, hz / 10, nappinr_callout, sc); 98 } 99 100 #if 0 101 static int 102 nappinr_activate(struct device *self, enum devact act) 103 { 104 printf("nappinr_activate act=%d\n", act); 105 return 0; 106 } 107 #endif 108 109 static void 110 nappinr_callout(void *arg) 111 { 112 static const int ptn[] = { 1, 2, 4, 8, 4, 2 }; 113 struct nappinr_softc* sc = arg; 114 115 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 0, ptn[sc->sc_pos++ % 6]); 116 callout_reset(&sc->sc_co, hz / 10, nappinr_callout, sc); 117 } 118