1 /* $NetBSD: button.c,v 1.16 2012/10/27 17:18:17 chs 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 1.16 2012/10/27 17:18:17 chs Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/device.h> 43 44 #include <sys/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 hpcio_chip_t sc_hc; 56 hpcio_intr_handle_t sc_intr_handle; 57 int sc_port; 58 long sc_id; 59 int sc_active; 60 config_hook_tag sc_hook_tag; 61 config_hook_tag sc_ghook_tag; 62 }; 63 64 static int button_match(device_t, cfdata_t, void *); 65 static void button_attach(device_t, device_t, void *); 66 static int button_intr(void *); 67 static int button_state(void *, int, long, void *); 68 69 CFATTACH_DECL_NEW(button, sizeof(struct button_softc), 70 button_match, button_attach, NULL, NULL); 71 72 int 73 button_match(device_t parent, cfdata_t match, void *aux) 74 { 75 struct hpcio_attach_args *haa = aux; 76 platid_mask_t mask; 77 78 if (strcmp(haa->haa_busname, HPCIO_BUSNAME)) 79 return (0); 80 if (match->cf_loc[HPCIOIFCF_PLATFORM] == 0) 81 return (0); 82 mask = PLATID_DEREF(match->cf_loc[HPCIOIFCF_PLATFORM]); 83 return (platid_match(&platid, &mask)); 84 } 85 86 void 87 button_attach(device_t parent, device_t self, void *aux) 88 { 89 struct hpcio_attach_args *haa = aux; 90 int *loc; 91 struct button_softc *sc = device_private(self); 92 int mode; 93 94 loc = device_cfdata(self)->cf_loc; 95 sc->sc_hc = (*haa->haa_getchip)(haa->haa_sc, loc[HPCIOIFCF_IOCHIP]); 96 sc->sc_port = loc[HPCIOIFCF_PORT]; 97 sc->sc_id = loc[HPCIOIFCF_ID]; 98 sc->sc_active = loc[HPCIOIFCF_ACTIVE]; 99 printf(" port=%d id=%ld active=%s", 100 sc->sc_port, sc->sc_id, sc->sc_active ? "high" : "low"); 101 102 mode = HPCIO_INTR_HOLD; 103 if (loc[HPCIOIFCF_LEVEL] != HPCIOIFCF_LEVEL_DEFAULT) { 104 mode |= HPCIO_INTR_LEVEL; 105 if (loc[HPCIOIFCF_LEVEL] == 0) 106 mode |= HPCIO_INTR_LOW; 107 else 108 mode |= HPCIO_INTR_HIGH; 109 printf(" sense=level"); 110 } else { 111 mode |= HPCIO_INTR_EDGE; 112 switch (loc[HPCIOIFCF_EDGE]) { 113 case 1: 114 mode |= HPCIO_INTR_POSEDGE; 115 break; 116 case 2: 117 mode |= HPCIO_INTR_NEGEDGE; 118 break; 119 case 0: 120 case 3: 121 case HPCIOMANCF_EDGE_DEFAULT: 122 mode |= HPCIO_INTR_POSEDGE; 123 mode |= HPCIO_INTR_NEGEDGE; 124 break; 125 default: 126 printf("%s(%d): invalid configuration, edge=%d", 127 __FILE__, __LINE__, loc[HPCIOIFCF_EDGE]); 128 break; 129 } 130 printf(" sense=edge"); 131 } 132 133 if (sc->sc_port == HPCIOIFCF_PORT_DEFAULT || 134 sc->sc_id == HPCIOIFCF_ID_DEFAULT) 135 printf(" (ignored)"); 136 else 137 sc->sc_intr_handle = 138 hpcio_intr_establish(sc->sc_hc, sc->sc_port, 139 mode, button_intr, sc); 140 sc->sc_ghook_tag = config_hook(CONFIG_HOOK_GET, sc->sc_id, 141 CONFIG_HOOK_SHARE, button_state, sc); 142 printf("\n"); 143 } 144 145 int 146 button_state(void *ctx, int type, long id, void *msg) 147 { 148 struct button_softc *sc = ctx; 149 150 if (type != CONFIG_HOOK_GET || id != sc->sc_id) 151 return (1); 152 153 if (CONFIG_HOOK_VALUEP(msg)) 154 return (1); 155 156 *(int*)msg = (hpcio_portread(sc->sc_hc, sc->sc_port) == sc->sc_active); 157 return (0); 158 } 159 160 int 161 button_intr(void *ctx) 162 { 163 struct button_softc *sc = ctx; 164 int on; 165 166 on = (hpcio_portread(sc->sc_hc, sc->sc_port) == sc->sc_active); 167 168 /* Clear interrupt */ 169 hpcio_intr_clear(sc->sc_hc, sc->sc_intr_handle); 170 171 config_hook_call(CONFIG_HOOK_BUTTONEVENT, sc->sc_id, (void*)on); 172 173 return (0); 174 } 175
Indexes created Sat Sep 20 22:09:52 GMT 2025