1 /* $NetBSD: ixdp425_led.c,v 1.1 2003/05/31 01:16:32 ichiro Exp $ */ 2 /* 3 * Copyright (c) 2003 4 * Ichiro FUKUHARA <ichiro@ichiro.org>. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Ichiro FUKUHARA. 18 * 4. The name of the company nor the name of the author may be used to 19 * endorse or promote products derived from this software without specific 20 * prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR 26 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: ixdp425_led.c,v 1.1 2003/05/31 01:16:32 ichiro Exp $"); 36 37 /* 38 * LED support for IXDP425 39 */ 40 41 #include <sys/param.h> 42 #include <sys/types.h> 43 #include <sys/callout.h> 44 #include <sys/device.h> 45 #include <sys/kernel.h> 46 #include <sys/systm.h> 47 48 #include <machine/bus.h> 49 50 #include <arm/xscale/ixp425_sipvar.h> 51 #include <arm/xscale/ixp425var.h> 52 53 static int ixdpled_match(struct device *, struct cfdata *, void *); 54 static void ixdpled_attach(struct device *, struct device *, void *); 55 static void ixdpled_callout(void *); 56 57 extern void ixp425_expbus_init(void); 58 59 struct ixdpled_softc { 60 struct device sc_dev; 61 bus_space_tag_t sc_iot; 62 bus_space_handle_t sc_ioh; 63 bus_addr_t sc_baseaddr; 64 bus_space_handle_t sc_pos; 65 struct callout sc_co; 66 }; 67 68 CFATTACH_DECL(ixdpled, sizeof(struct ixdpled_softc), 69 ixdpled_match, ixdpled_attach, NULL, NULL); 70 71 static int 72 ixdpled_match(struct device *parent, struct cfdata *match, void *aux) 73 { 74 return (1); 75 } 76 77 static void 78 ixdpled_attach(struct device *parent, struct device *self, void *aux) 79 { 80 struct ixdpled_softc* sc = (struct ixdpled_softc*) self; 81 struct ixpsip_attach_args* sa = aux; 82 83 printf("\n"); 84 85 sc->sc_iot = sa->sa_iot; 86 sc->sc_baseaddr = sa->sa_addr; 87 88 if(bus_space_map(sc->sc_iot, sa->sa_addr, sa->sa_size, 0, 89 &sc->sc_ioh)) { 90 printf("%s: unable to map registers\n", self->dv_xname); 91 return; 92 } 93 94 IXPREG(IXP425_EXP_VBASE + EXP_TIMING_CS2_OFFSET) = 95 IXP425_EXP_ADDR_T(3) | IXP425_EXP_SETUP_T(3) | 96 IXP425_EXP_STROBE_T(15) | IXP425_EXP_HOLD_T(3) | 97 IXP425_EXP_RECOVERY_T(15) | EXP_SZ_512 | EXP_WR_EN | 98 IXP425_EXP_CS_EN; 99 100 callout_init(&sc->sc_co); 101 callout_reset(&sc->sc_co, hz / 5, ixdpled_callout, sc); 102 103 } 104 105 static void 106 ixdpled_callout(void *arg) 107 { 108 struct ixdpled_softc* sc = arg; 109 110 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, 111 0x1000 + (sc->sc_pos++ % 16)); 112 113 callout_reset(&sc->sc_co, hz / 5, ixdpled_callout, sc); 114 } 115 116