1 /* $NetBSD: nappi_nr.c,v 1.5 2003/03/25 06:53:16 igy 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 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: nappi_nr.c,v 1.5 2003/03/25 06:53:16 igy Exp $"); 41 42 /* 43 * LED support for NAPPI. 44 */ 45 46 #include <sys/param.h> 47 #include <sys/types.h> 48 #include <sys/callout.h> 49 #include <sys/device.h> 50 #include <sys/kernel.h> 51 #include <sys/systm.h> 52 53 #include <machine/bus.h> 54 55 #include <arm/ixp12x0/ixpsipvar.h> 56 57 static int nappinr_match(struct device *, struct cfdata *, void *); 58 static void nappinr_attach(struct device *, struct device *, void *); 59 #if 0 60 static int nappinr_activate(struct device *, enum devact); 61 #endif 62 static void nappinr_callout(void *); 63 64 struct nappinr_softc { 65 struct device sc_dev; 66 bus_space_tag_t sc_iot; 67 bus_space_handle_t sc_ioh; 68 bus_addr_t sc_baseaddr; 69 bus_space_handle_t sc_pos; 70 struct callout sc_co; 71 }; 72 73 CFATTACH_DECL(nappinr, sizeof(struct nappinr_softc), 74 nappinr_match, nappinr_attach, NULL, NULL); 75 76 static int 77 nappinr_match(struct device *parent, struct cfdata *match, void *aux) 78 { 79 return (1); 80 } 81 82 static void 83 nappinr_attach(struct device *parent, struct device *self, void *aux) 84 { 85 struct nappinr_softc* sc = (struct nappinr_softc*) self; 86 struct ixpsip_attach_args* sa = aux; 87 88 printf("\n"); 89 90 sc->sc_iot = sa->sa_iot; 91 sc->sc_baseaddr = sa->sa_addr; 92 93 if(bus_space_map(sa->sa_iot, sa->sa_addr, sa->sa_size, 0, 94 &sc->sc_ioh)) { 95 printf("%s: unable to map registers\n", self->dv_xname); 96 return; 97 } 98 99 callout_init(&sc->sc_co); 100 callout_reset(&sc->sc_co, hz / 10, nappinr_callout, sc); 101 } 102 103 #if 0 104 static int 105 nappinr_activate(struct device *self, enum devact act) 106 { 107 printf("nappinr_activate act=%d\n", act); 108 return 0; 109 } 110 #endif 111 112 static void 113 nappinr_callout(void *arg) 114 { 115 static const int ptn[] = { 1, 2, 4, 8, 4, 2 }; 116 struct nappinr_softc* sc = arg; 117 118 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 0, 119 ptn[sc->sc_pos++ % 6] | ptn[sc->sc_pos++ % 6]<< 4); 120 callout_reset(&sc->sc_co, hz / 10, nappinr_callout, sc); 121 } 122