1 /* $NetBSD: nappi_nr.c,v 1.8 2008/04/28 20:23:17 martin 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: nappi_nr.c,v 1.8 2008/04/28 20:23:17 martin Exp $"); 34 35 /* 36 * LED support for NAPPI. 37 */ 38 39 #include <sys/param.h> 40 #include <sys/types.h> 41 #include <sys/callout.h> 42 #include <sys/device.h> 43 #include <sys/kernel.h> 44 #include <sys/systm.h> 45 46 #include <machine/bus.h> 47 48 #include <arm/ixp12x0/ixpsipvar.h> 49 50 static int nappinr_match(struct device *, struct cfdata *, void *); 51 static void nappinr_attach(struct device *, struct device *, void *); 52 #if 0 53 static int nappinr_activate(struct device *, enum devact); 54 #endif 55 static void nappinr_callout(void *); 56 57 struct nappinr_softc { 58 struct device sc_dev; 59 bus_space_tag_t sc_iot; 60 bus_space_handle_t sc_ioh; 61 bus_addr_t sc_baseaddr; 62 bus_space_handle_t sc_pos; 63 struct callout sc_co; 64 }; 65 66 CFATTACH_DECL(nappinr, sizeof(struct nappinr_softc), 67 nappinr_match, nappinr_attach, NULL, NULL); 68 69 static int 70 nappinr_match(struct device *parent, struct cfdata *match, void *aux) 71 { 72 return (1); 73 } 74 75 static void 76 nappinr_attach(struct device *parent, struct device *self, void *aux) 77 { 78 struct nappinr_softc* sc = (struct nappinr_softc*) self; 79 struct ixpsip_attach_args* sa = aux; 80 81 printf("\n"); 82 83 sc->sc_iot = sa->sa_iot; 84 sc->sc_baseaddr = sa->sa_addr; 85 86 if(bus_space_map(sa->sa_iot, sa->sa_addr, sa->sa_size, 0, 87 &sc->sc_ioh)) { 88 printf("%s: unable to map registers\n", self->dv_xname); 89 return; 90 } 91 92 callout_init(&sc->sc_co, 0); 93 callout_reset(&sc->sc_co, hz / 10, nappinr_callout, sc); 94 } 95 96 #if 0 97 static int 98 nappinr_activate(struct device *self, enum devact act) 99 { 100 printf("nappinr_activate act=%d\n", act); 101 return 0; 102 } 103 #endif 104 105 static void 106 nappinr_callout(void *arg) 107 { 108 static const int ptn[] = { 1, 2, 4, 8, 4, 2 }; 109 struct nappinr_softc* sc = arg; 110 111 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 0, 112 ptn[sc->sc_pos++ % 6] | ptn[sc->sc_pos++ % 6]<< 4); 113 callout_reset(&sc->sc_co, hz / 10, nappinr_callout, sc); 114 } 115