1 /* $NetBSD: acpi_button.c,v 1.3 2002/03/10 19:55:01 augustss Exp $ */ 2 3 /* 4 * Copyright 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * ACPI Button driver. 40 */ 41 42 #include <sys/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: acpi_button.c,v 1.3 2002/03/10 19:55:01 augustss Exp $"); 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/device.h> 48 49 #include <dev/acpi/acpica.h> 50 #include <dev/acpi/acpireg.h> 51 #include <dev/acpi/acpivar.h> 52 53 struct acpibut_softc { 54 struct device sc_dev; /* base device glue */ 55 struct acpi_devnode *sc_node; /* our ACPI devnode */ 56 int sc_buttype; /* button type */ 57 int sc_flags; /* see below */ 58 }; 59 60 #define ACPIBUT_TYPE_POWER 0 61 #define ACPIBUT_TYPE_SLEEP 1 62 63 #define ACPIBUT_F_VERBOSE 0x01 /* verbose events */ 64 65 int acpibut_match(struct device *, struct cfdata *, void *); 66 void acpibut_attach(struct device *, struct device *, void *); 67 68 struct cfattach acpibut_ca = { 69 sizeof(struct acpibut_softc), acpibut_match, acpibut_attach, 70 }; 71 72 void acpibut_pressed_for_sleep(void *); 73 void acpibut_pressed_for_wakeup(void *); 74 void acpibut_notify_handler(ACPI_HANDLE, UINT32, void *context); 75 76 /* 77 * acpibut_match: 78 * 79 * Autoconfiguration `match' routine. 80 */ 81 int 82 acpibut_match(struct device *parent, struct cfdata *match, void *aux) 83 { 84 struct acpi_attach_args *aa = aux; 85 86 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 87 return (0); 88 89 if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0C") == 0 || 90 strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0E") == 0) 91 return (1); 92 93 return (0); 94 } 95 96 /* 97 * acpibut_attach: 98 * 99 * Autoconfiguration `attach' routine. 100 */ 101 void 102 acpibut_attach(struct device *parent, struct device *self, void *aux) 103 { 104 struct acpibut_softc *sc = (void *) self; 105 struct acpi_attach_args *aa = aux; 106 const char *desc; 107 ACPI_STATUS rv; 108 109 if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0C") == 0) { 110 sc->sc_buttype = ACPIBUT_TYPE_POWER; 111 desc = "Power"; 112 } else if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0E") == 0) { 113 sc->sc_buttype = ACPIBUT_TYPE_SLEEP; 114 desc = "Sleep"; 115 } else { 116 printf("\n"); 117 panic("acpibut_attach: impossible"); 118 } 119 120 printf(": ACPI %s Button\n", desc); 121 122 sc->sc_node = aa->aa_node; 123 124 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 125 ACPI_DEVICE_NOTIFY, acpibut_notify_handler, sc); 126 if (rv != AE_OK) { 127 printf("%s: unable to register device notify handler: %d\n", 128 sc->sc_dev.dv_xname, rv); 129 return; 130 } 131 132 #ifdef ACPI_BUT_DEBUG 133 /* Display the current state when it changes. */ 134 sc->sc_flags = ACPIBUT_F_VERBOSE; 135 #endif 136 } 137 138 /* 139 * acpibut_pressed_for_sleep: 140 * 141 * Deal with a button being pressed for sleep. 142 */ 143 void 144 acpibut_pressed_for_sleep(void *arg) 145 { 146 struct acpibut_softc *sc = arg; 147 148 if (sc->sc_flags & ACPIBUT_F_VERBOSE) 149 printf("%s: button pressed for sleep\n", 150 sc->sc_dev.dv_xname); 151 152 /* 153 * XXX Perform the appropriate action. 154 */ 155 } 156 157 /* 158 * acpibut_pressed_for_wakeup: 159 * 160 * Deal with a button being pressed for wakeup. 161 */ 162 void 163 acpibut_pressed_for_wakeup(void *arg) 164 { 165 struct acpibut_softc *sc = arg; 166 167 if (sc->sc_flags & ACPIBUT_F_VERBOSE) 168 printf("%s: button pressed for wakeup\n", 169 sc->sc_dev.dv_xname); 170 171 /* 172 * XXX Perform the appropriate action. 173 */ 174 } 175 176 /* 177 * acpibut_notify_handler: 178 * 179 * Callback from ACPI interrupt handler to notify us of an event. 180 */ 181 void 182 acpibut_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 183 { 184 struct acpibut_softc *sc = context; 185 int rv; 186 187 switch (notify) { 188 case ACPI_NOTIFY_S0PowerButtonPressed: 189 #if 0 190 case ACPI_NOTIFY_S0SleepButtonPressed: /* same as above */ 191 #endif 192 #ifdef ACPI_BUT_DEBUG 193 printf("%s: received ButtonPressed message\n", 194 sc->sc_dev.dv_xname); 195 #endif 196 rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO, 197 acpibut_pressed_for_sleep, sc); 198 if (rv != AE_OK) 199 printf("%s: WARNING: unable to queue button pressed " 200 "event: %d\n", sc->sc_dev.dv_xname, rv); 201 break; 202 203 /* XXX ACPI_NOTIFY_DeviceWake?? */ 204 205 default: 206 printf("%s: received unknown notify message: 0x%x\n", 207 sc->sc_dev.dv_xname, notify); 208 } 209 } 210