button.c revision 1.1
1 /* $NetBSD: button.c,v 1.1 2001/04/30 10:10:18 takemura Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 5 * Shin Takemura 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 "opt_vr41xx.h" 50 #include <hpcmips/vr/vripvar.h> 51 52 #include "locators.h" 53 54 struct button_vrgiu_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_vrgiu_match __P((struct device *, struct cfdata *, 66 void *)); 67 static void button_vrgiu_attach __P((struct device *, struct device *, 68 void *)); 69 static int button_vrgiu_intr __P((void*)); 70 static int button_vrgiu_state __P((void *ctx, int type, long id, 71 void *msg)); 72 73 struct cfattach button_vrgiu_ca = { 74 sizeof(struct button_vrgiu_softc), button_vrgiu_match, button_vrgiu_attach 75 }; 76 77 int 78 button_vrgiu_match(parent, match, aux) 79 struct device *parent; 80 struct cfdata *match; 81 void *aux; 82 { 83 platid_mask_t mask; 84 85 if (match->cf_loc[HPCIOIFCF_PLATFORM] == 0) 86 return 0; 87 mask = PLATID_DEREF(match->cf_loc[HPCIOIFCF_PLATFORM]); 88 return platid_match(&platid, &mask); 89 } 90 91 void 92 button_vrgiu_attach(parent, self, aux) 93 struct device *parent; 94 struct device *self; 95 void *aux; 96 { 97 struct hpcio_attach_args *haa = aux; 98 int *loc; 99 struct button_vrgiu_softc *sc = (void*)self; 100 int mode; 101 102 sc->sc_hc = (*haa->haa_getchip)(haa->haa_sc, VRIP_IOCHIP_VRGIU); 103 104 loc = sc->sc_dev.dv_cfdata->cf_loc; 105 sc->sc_port = loc[HPCIOIFCF_PORT]; 106 sc->sc_id = loc[HPCIOIFCF_ID]; 107 sc->sc_active = loc[HPCIOIFCF_ACTIVE]; 108 printf(" port=%d id=%ld active=%s", 109 sc->sc_port, sc->sc_id, sc->sc_active ? "high" : "low"); 110 111 #if 0 112 #if 1 /* Windows CE default */ 113 mode = VRGIU_INTR_EDGE_HOLD; 114 #else /* XXX Don't challenge! Freestyle Only */ 115 mode = VRGIU_INTR_LEVEL_LOW_HOLD; 116 #endif 117 #endif 118 mode = HPCIO_INTR_HOLD; 119 if (loc[HPCIOIFCF_LEVEL] != HPCIOIFCF_LEVEL_DEFAULT) { 120 mode |= HPCIO_INTR_LEVEL; 121 if (loc[HPCIOIFCF_LEVEL] == 0) 122 mode |= HPCIO_INTR_LOW; 123 else 124 mode |= HPCIO_INTR_HIGH; 125 printf(" sense=level"); 126 } else { 127 mode |= HPCIO_INTR_EDGE; 128 printf(" sense=edge"); 129 } 130 131 if (sc->sc_port == HPCIOIFCF_PORT_DEFAULT || 132 sc->sc_id == HPCIOIFCF_ID_DEFAULT) 133 printf(" (ignored)"); 134 else 135 sc->sc_intr_handle = 136 hpcio_intr_establish(sc->sc_hc, sc->sc_port, 137 mode, button_vrgiu_intr, sc); 138 sc->sc_ghook_tag = config_hook(CONFIG_HOOK_GET, 139 sc->sc_id, 140 CONFIG_HOOK_SHARE, 141 button_vrgiu_state, 142 sc); 143 printf("\n"); 144 } 145 146 int 147 button_vrgiu_state(ctx, type, id, msg) 148 void *ctx; 149 int type; 150 long id; 151 void *msg; 152 { 153 struct button_vrgiu_softc *sc = ctx; 154 155 if (type != CONFIG_HOOK_GET || id != sc->sc_id) 156 return 1; 157 158 if (CONFIG_HOOK_VALUEP(msg)) 159 return 1; 160 161 *(int*)msg = (hpcio_portread(sc->sc_hc, sc->sc_port) == sc->sc_active); 162 return 0; 163 } 164 165 int 166 button_vrgiu_intr(ctx) 167 void *ctx; 168 { 169 struct button_vrgiu_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
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