1 /* $NetBSD: acpi_button.c,v 1.6 2002/10/02 16:33:36 thorpej 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 1.6 2002/10/02 16:33:36 thorpej 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 CFATTACH_DECL(acpibut, sizeof(struct acpibut_softc), 69 acpibut_match, acpibut_attach, NULL, NULL); 70 71 void acpibut_pressed_for_sleep(void *); 72 void acpibut_pressed_for_wakeup(void *); 73 void acpibut_notify_handler(ACPI_HANDLE, UINT32, void *context); 74 75 /* 76 * acpibut_match: 77 * 78 * Autoconfiguration `match' routine. 79 */ 80 int 81 acpibut_match(struct device *parent, struct cfdata *match, void *aux) 82 { 83 struct acpi_attach_args *aa = aux; 84 85 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 86 return (0); 87 88 if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0C") == 0 || 89 strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0E") == 0) 90 return (1); 91 92 return (0); 93 } 94 95 /* 96 * acpibut_attach: 97 * 98 * Autoconfiguration `attach' routine. 99 */ 100 void 101 acpibut_attach(struct device *parent, struct device *self, void *aux) 102 { 103 struct acpibut_softc *sc = (void *) self; 104 struct acpi_attach_args *aa = aux; 105 const char *desc; 106 ACPI_STATUS rv; 107 108 if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0C") == 0) { 109 sc->sc_buttype = ACPIBUT_TYPE_POWER; 110 desc = "Power"; 111 } else if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0E") == 0) { 112 sc->sc_buttype = ACPIBUT_TYPE_SLEEP; 113 desc = "Sleep"; 114 } else { 115 printf("\n"); 116 panic("acpibut_attach: impossible"); 117 } 118 119 printf(": ACPI %s Button\n", desc); 120 121 sc->sc_node = aa->aa_node; 122 123 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 124 ACPI_DEVICE_NOTIFY, acpibut_notify_handler, sc); 125 if (rv != AE_OK) { 126 printf("%s: unable to register device notify handler: %d\n", 127 sc->sc_dev.dv_xname, rv); 128 return; 129 } 130 131 #ifdef ACPI_BUT_DEBUG 132 /* Display the current state when it changes. */ 133 sc->sc_flags = ACPIBUT_F_VERBOSE; 134 #endif 135 } 136 137 /* 138 * acpibut_pressed_for_sleep: 139 * 140 * Deal with a button being pressed for sleep. 141 */ 142 void 143 acpibut_pressed_for_sleep(void *arg) 144 { 145 struct acpibut_softc *sc = arg; 146 147 if (sc->sc_flags & ACPIBUT_F_VERBOSE) 148 printf("%s: button pressed for sleep\n", 149 sc->sc_dev.dv_xname); 150 151 /* 152 * XXX Perform the appropriate action. 153 */ 154 } 155 156 /* 157 * acpibut_pressed_for_wakeup: 158 * 159 * Deal with a button being pressed for wakeup. 160 */ 161 void 162 acpibut_pressed_for_wakeup(void *arg) 163 { 164 struct acpibut_softc *sc = arg; 165 166 if (sc->sc_flags & ACPIBUT_F_VERBOSE) 167 printf("%s: button pressed for wakeup\n", 168 sc->sc_dev.dv_xname); 169 170 /* 171 * XXX Perform the appropriate action. 172 */ 173 } 174 175 /* 176 * acpibut_notify_handler: 177 * 178 * Callback from ACPI interrupt handler to notify us of an event. 179 */ 180 void 181 acpibut_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 182 { 183 struct acpibut_softc *sc = context; 184 int rv; 185 186 switch (notify) { 187 case ACPI_NOTIFY_S0PowerButtonPressed: 188 #if 0 189 case ACPI_NOTIFY_S0SleepButtonPressed: /* same as above */ 190 #endif 191 #ifdef ACPI_BUT_DEBUG 192 printf("%s: received ButtonPressed message\n", 193 sc->sc_dev.dv_xname); 194 #endif 195 rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO, 196 acpibut_pressed_for_sleep, sc); 197 if (rv != AE_OK) 198 printf("%s: WARNING: unable to queue button pressed " 199 "event: %d\n", sc->sc_dev.dv_xname, rv); 200 break; 201 202 /* XXX ACPI_NOTIFY_DeviceWake?? */ 203 204 default: 205 printf("%s: received unknown notify message: 0x%x\n", 206 sc->sc_dev.dv_xname, notify); 207 } 208 } 209