button.c revision 1.10.4.1
1 /* $NetBSD: button.c,v 1.10.4.1 2006/06/21 15:02:46 yamt Exp $ */ 2 3 /*- 4 * Copyright (c) 1999-2001 5 * TAKEMURA Shin1 and PocketBSD Project. 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 the PocketBSD project 18 * and its contributors. 19 * 4. Neither the name of the project nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: button.c,v 1.10.4.1 2006/06/21 15:02:46 yamt Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/device.h> 43 44 #include <machine/bus.h> 45 46 #include <machine/config_hook.h> 47 #include <machine/platid.h> 48 #include <machine/platid_mask.h> 49 50 #include <dev/hpc/hpciovar.h> 51 52 #include "locators.h" 53 54 struct button_softc { 55 struct device sc_dev; 56 hpcio_chip_t sc_hc; 57 hpcio_intr_handle_t sc_intr_handle; 58 int sc_port; 59 long sc_id; 60 int sc_active; 61 config_hook_tag sc_hook_tag; 62 config_hook_tag sc_ghook_tag; 63 }; 64 65 static int button_match(struct device *, struct cfdata *, void *); 66 static void button_attach(struct device *, struct device *, void *); 67 static int button_intr(void *); 68 static int button_state(void *, int, long, void *); 69 70 CFATTACH_DECL(button, sizeof(struct button_softc), 71 button_match, button_attach, NULL, NULL); 72 73 int 74 button_match(struct device *parent, struct cfdata *match, void *aux) 75 { 76 struct hpcio_attach_args *haa = aux; 77 platid_mask_t mask; 78 79 if (strcmp(haa->haa_busname, HPCIO_BUSNAME)) 80 return (0); 81 if (match->cf_loc[HPCIOIFCF_PLATFORM] == 0) 82 return (0); 83 mask = PLATID_DEREF(match->cf_loc[HPCIOIFCF_PLATFORM]); 84 return (platid_match(&platid, &mask)); 85 } 86 87 void 88 button_attach(struct device *parent, struct device *self, void *aux) 89 { 90 struct hpcio_attach_args *haa = aux; 91 int *loc; 92 struct button_softc *sc = (void*)self; 93 int mode; 94 95 loc = device_cfdata(&sc->sc_dev)->cf_loc; 96 sc->sc_hc = (*haa->haa_getchip)(haa->haa_sc, loc[HPCIOIFCF_IOCHIP]); 97 sc->sc_port = loc[HPCIOIFCF_PORT]; 98 sc->sc_id = loc[HPCIOIFCF_ID]; 99 sc->sc_active = loc[HPCIOIFCF_ACTIVE]; 100 printf(" port=%d id=%ld active=%s", 101 sc->sc_port, sc->sc_id, sc->sc_active ? "high" : "low"); 102 103 mode = HPCIO_INTR_HOLD; 104 if (loc[HPCIOIFCF_LEVEL] != HPCIOIFCF_LEVEL_DEFAULT) { 105 mode |= HPCIO_INTR_LEVEL; 106 if (loc[HPCIOIFCF_LEVEL] == 0) 107 mode |= HPCIO_INTR_LOW; 108 else 109 mode |= HPCIO_INTR_HIGH; 110 printf(" sense=level"); 111 } else { 112 mode |= HPCIO_INTR_EDGE; 113 switch (loc[HPCIOIFCF_EDGE]) { 114 case 1: 115 mode |= HPCIO_INTR_POSEDGE; 116 break; 117 case 2: 118 mode |= HPCIO_INTR_NEGEDGE; 119 break; 120 case 0: 121 case 3: 122 case HPCIOMANCF_EDGE_DEFAULT: 123 mode |= HPCIO_INTR_POSEDGE; 124 mode |= HPCIO_INTR_NEGEDGE; 125 break; 126 default: 127 printf("%s(%d): invalid configuration, edge=%d", 128 __FILE__, __LINE__, loc[HPCIOIFCF_EDGE]); 129 break; 130 } 131 printf(" sense=edge"); 132 } 133 134 if (sc->sc_port == HPCIOIFCF_PORT_DEFAULT || 135 sc->sc_id == HPCIOIFCF_ID_DEFAULT) 136 printf(" (ignored)"); 137 else 138 sc->sc_intr_handle = 139 hpcio_intr_establish(sc->sc_hc, sc->sc_port, 140 mode, button_intr, sc); 141 sc->sc_ghook_tag = config_hook(CONFIG_HOOK_GET, sc->sc_id, 142 CONFIG_HOOK_SHARE, button_state, sc); 143 printf("\n"); 144 } 145 146 int 147 button_state(void *ctx, int type, long id, void *msg) 148 { 149 struct button_softc *sc = ctx; 150 151 if (type != CONFIG_HOOK_GET || id != sc->sc_id) 152 return (1); 153 154 if (CONFIG_HOOK_VALUEP(msg)) 155 return (1); 156 157 *(int*)msg = (hpcio_portread(sc->sc_hc, sc->sc_port) == sc->sc_active); 158 return (0); 159 } 160 161 int 162 button_intr(void *ctx) 163 { 164 struct button_softc *sc = ctx; 165 int on; 166 167 on = (hpcio_portread(sc->sc_hc, sc->sc_port) == sc->sc_active); 168 169 /* Clear interrupt */ 170 hpcio_intr_clear(sc->sc_hc, sc->sc_intr_handle); 171 172 config_hook_call(CONFIG_HOOK_BUTTONEVENT, sc->sc_id, (void*)on); 173 174 return (0); 175 } 176
Indexes created Mon Sep 22 05:09:51 GMT 2025