button.c revision 1.4.2.2
1 /* $NetBSD: button.c,v 1.4.2.2 2001/06/21 20:01:35 nathanw 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(struct device *, struct cfdata *, void *); 63 static void button_attach(struct device *, struct device *, void *); 64 static int button_intr(void *); 65 static int button_state(void *, int, long, void *); 66 67 struct cfattach button_ca = { 68 sizeof(struct button_softc), button_match, button_attach 69 }; 70 71 int 72 button_match(struct device *parent, struct cfdata *match, void *aux) 73 { 74 struct hpcio_attach_args *haa = aux; 75 platid_mask_t mask; 76 77 if (strcmp(haa->haa_busname, HPCIO_BUSNAME)) 78 return (0); 79 if (match->cf_loc[HPCIOIFCF_PLATFORM] == 0) 80 return (0); 81 mask = PLATID_DEREF(match->cf_loc[HPCIOIFCF_PLATFORM]); 82 return (platid_match(&platid, &mask)); 83 } 84 85 void 86 button_attach(struct device *parent, struct device *self, void *aux) 87 { 88 struct hpcio_attach_args *haa = aux; 89 int *loc; 90 struct button_softc *sc = (void*)self; 91 int mode; 92 93 loc = sc->sc_dev.dv_cfdata->cf_loc; 94 sc->sc_hc = (*haa->haa_getchip)(haa->haa_sc, loc[HPCIOIFCF_IOCHIP]); 95 sc->sc_port = loc[HPCIOIFCF_PORT]; 96 sc->sc_id = loc[HPCIOIFCF_ID]; 97 sc->sc_active = loc[HPCIOIFCF_ACTIVE]; 98 printf(" port=%d id=%ld active=%s", 99 sc->sc_port, sc->sc_id, sc->sc_active ? "high" : "low"); 100 101 #if 0 102 #if 1 /* Windows CE default */ 103 mode = VRGIU_INTR_EDGE_HOLD; 104 #else /* XXX Don't challenge! Freestyle Only */ 105 mode = VRGIU_INTR_LEVEL_LOW_HOLD; 106 #endif 107 #endif 108 mode = HPCIO_INTR_HOLD; 109 if (loc[HPCIOIFCF_LEVEL] != HPCIOIFCF_LEVEL_DEFAULT) { 110 mode |= HPCIO_INTR_LEVEL; 111 if (loc[HPCIOIFCF_LEVEL] == 0) 112 mode |= HPCIO_INTR_LOW; 113 else 114 mode |= HPCIO_INTR_HIGH; 115 printf(" sense=level"); 116 } else { 117 mode |= HPCIO_INTR_EDGE; 118 switch (loc[HPCIOIFCF_EDGE]) { 119 case 1: 120 mode |= HPCIO_INTR_POSEDGE; 121 break; 122 case 2: 123 mode |= HPCIO_INTR_NEGEDGE; 124 break; 125 case 0: 126 case 3: 127 case HPCIOMANCF_EDGE_DEFAULT: 128 mode |= HPCIO_INTR_POSEDGE; 129 mode |= HPCIO_INTR_NEGEDGE; 130 break; 131 default: 132 printf("%s(%d): invalid configuration, edge=%d", 133 __FILE__, __LINE__, loc[HPCIOIFCF_EDGE]); 134 break; 135 } 136 printf(" sense=edge"); 137 } 138 139 if (sc->sc_port == HPCIOIFCF_PORT_DEFAULT || 140 sc->sc_id == HPCIOIFCF_ID_DEFAULT) 141 printf(" (ignored)"); 142 else 143 sc->sc_intr_handle = 144 hpcio_intr_establish(sc->sc_hc, sc->sc_port, 145 mode, button_intr, sc); 146 sc->sc_ghook_tag = config_hook(CONFIG_HOOK_GET, sc->sc_id, 147 CONFIG_HOOK_SHARE, button_state, sc); 148 printf("\n"); 149 } 150 151 int 152 button_state(void *ctx, int type, long id, void *msg) 153 { 154 struct button_softc *sc = ctx; 155 156 if (type != CONFIG_HOOK_GET || id != sc->sc_id) 157 return (1); 158 159 if (CONFIG_HOOK_VALUEP(msg)) 160 return (1); 161 162 *(int*)msg = (hpcio_portread(sc->sc_hc, sc->sc_port) == sc->sc_active); 163 return (0); 164 } 165 166 int 167 button_intr(void *ctx) 168 { 169 struct button_softc *sc = ctx; 170 int on; 171 172 on = (hpcio_portread(sc->sc_hc, sc->sc_port) == sc->sc_active); 173 174 /* Clear interrupt */ 175 hpcio_intr_clear(sc->sc_hc, sc->sc_intr_handle); 176 177 config_hook_call(CONFIG_HOOK_BUTTONEVENT, sc->sc_id, (void*)on); 178 179 return (0); 180 } 181
Indexes created Sun Sep 21 20:09:37 GMT 2025