button.c revision 1.2
1 /* $NetBSD: button.c,v 1.2 2001/04/30 11:42:17 takemura 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/param.h> 38 #include <sys/systm.h> 39 #include <sys/device.h> 40 41 #include <machine/bus.h> 42 43 #include <machine/config_hook.h> 44 #include <machine/platid.h> 45 #include <machine/platid_mask.h> 46 47 #include <dev/hpc/hpciovar.h> 48 49 #include "locators.h" 50 51 struct button_softc { 52 struct device sc_dev; 53 hpcio_chip_t sc_hc; 54 hpcio_intr_handle_t sc_intr_handle; 55 int sc_port; 56 long sc_id; 57 int sc_active; 58 config_hook_tag sc_hook_tag; 59 config_hook_tag sc_ghook_tag; 60 }; 61 62 static int button_match __P((struct device *, struct cfdata *, 63 void *)); 64 static void button_attach __P((struct device *, struct device *, 65 void *)); 66 static int button_intr __P((void*)); 67 static int button_state __P((void *ctx, int type, long id, 68 void *msg)); 69 70 struct cfattach button_ca = { 71 sizeof(struct button_softc), button_match, button_attach 72 }; 73 74 int 75 button_match(parent, match, aux) 76 struct device *parent; 77 struct cfdata *match; 78 void *aux; 79 { 80 platid_mask_t mask; 81 82 if (match->cf_loc[HPCIOIFCF_PLATFORM] == 0) 83 return 0; 84 mask = PLATID_DEREF(match->cf_loc[HPCIOIFCF_PLATFORM]); 85 return platid_match(&platid, &mask); 86 } 87 88 void 89 button_attach(parent, self, aux) 90 struct device *parent; 91 struct device *self; 92 void *aux; 93 { 94 struct hpcio_attach_args *haa = aux; 95 int *loc; 96 struct button_softc *sc = (void*)self; 97 int mode; 98 99 loc = sc->sc_dev.dv_cfdata->cf_loc; 100 sc->sc_hc = (*haa->haa_getchip)(haa->haa_sc, loc[HPCIOIFCF_IOCHIP]); 101 sc->sc_port = loc[HPCIOIFCF_PORT]; 102 sc->sc_id = loc[HPCIOIFCF_ID]; 103 sc->sc_active = loc[HPCIOIFCF_ACTIVE]; 104 printf(" port=%d id=%ld active=%s", 105 sc->sc_port, sc->sc_id, sc->sc_active ? "high" : "low"); 106 107 #if 0 108 #if 1 /* Windows CE default */ 109 mode = VRGIU_INTR_EDGE_HOLD; 110 #else /* XXX Don't challenge! Freestyle Only */ 111 mode = VRGIU_INTR_LEVEL_LOW_HOLD; 112 #endif 113 #endif 114 mode = HPCIO_INTR_HOLD; 115 if (loc[HPCIOIFCF_LEVEL] != HPCIOIFCF_LEVEL_DEFAULT) { 116 mode |= HPCIO_INTR_LEVEL; 117 if (loc[HPCIOIFCF_LEVEL] == 0) 118 mode |= HPCIO_INTR_LOW; 119 else 120 mode |= HPCIO_INTR_HIGH; 121 printf(" sense=level"); 122 } else { 123 mode |= HPCIO_INTR_EDGE; 124 switch (loc[HPCIOIFCF_EDGE]) { 125 case 1: 126 mode |= HPCIO_INTR_POSEDGE; 127 break; 128 case 2: 129 mode |= HPCIO_INTR_NEGEDGE; 130 break; 131 case 0: 132 case 3: 133 case HPCIOMANCF_EDGE_DEFAULT: 134 mode |= HPCIO_INTR_POSEDGE; 135 mode |= HPCIO_INTR_NEGEDGE; 136 break; 137 default: 138 printf("%s(%d): invalid configuration, edge=%d", 139 __FILE__, __LINE__, loc[HPCIOIFCF_EDGE]); 140 break; 141 } 142 printf(" sense=edge"); 143 } 144 145 if (sc->sc_port == HPCIOIFCF_PORT_DEFAULT || 146 sc->sc_id == HPCIOIFCF_ID_DEFAULT) 147 printf(" (ignored)"); 148 else 149 sc->sc_intr_handle = 150 hpcio_intr_establish(sc->sc_hc, sc->sc_port, 151 mode, button_intr, sc); 152 sc->sc_ghook_tag = config_hook(CONFIG_HOOK_GET, 153 sc->sc_id, 154 CONFIG_HOOK_SHARE, 155 button_state, 156 sc); 157 printf("\n"); 158 } 159 160 int 161 button_state(ctx, type, id, msg) 162 void *ctx; 163 int type; 164 long id; 165 void *msg; 166 { 167 struct button_softc *sc = ctx; 168 169 if (type != CONFIG_HOOK_GET || id != sc->sc_id) 170 return 1; 171 172 if (CONFIG_HOOK_VALUEP(msg)) 173 return 1; 174 175 *(int*)msg = (hpcio_portread(sc->sc_hc, sc->sc_port) == sc->sc_active); 176 return 0; 177 } 178 179 int 180 button_intr(ctx) 181 void *ctx; 182 { 183 struct button_softc *sc = ctx; 184 int on; 185 186 on = (hpcio_portread(sc->sc_hc, sc->sc_port) == sc->sc_active); 187 188 /* Clear interrupt */ 189 hpcio_intr_clear(sc->sc_hc, sc->sc_intr_handle); 190 191 config_hook_call(CONFIG_HOOK_BUTTONEVENT, sc->sc_id, (void*)on); 192 193 return 0; 194 } 195
Indexes created Mon Sep 22 13:09:51 GMT 2025