1 /* $NetBSD: acpi_button.c,v 1.2 2001/11/13 13:01:57 lukem 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 1.2 2001/11/13 13:01:57 lukem 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 #define ACPI_BUT_DEBUG 54 55 struct acpibut_softc { 56 struct device sc_dev; /* base device glue */ 57 struct acpi_devnode *sc_node; /* our ACPI devnode */ 58 int sc_buttype; /* button type */ 59 int sc_flags; /* see below */ 60 }; 61 62 #define ACPIBUT_TYPE_POWER 0 63 #define ACPIBUT_TYPE_SLEEP 1 64 65 #define ACPIBUT_F_VERBOSE 0x01 /* verbose events */ 66 67 int acpibut_match(struct device *, struct cfdata *, void *); 68 void acpibut_attach(struct device *, struct device *, void *); 69 70 struct cfattach acpibut_ca = { 71 sizeof(struct acpibut_softc), acpibut_match, acpibut_attach, 72 }; 73 74 void acpibut_pressed_for_sleep(void *); 75 void acpibut_pressed_for_wakeup(void *); 76 void acpibut_notify_handler(ACPI_HANDLE, UINT32, void *context); 77 78 /* 79 * acpibut_match: 80 * 81 * Autoconfiguration `match' routine. 82 */ 83 int 84 acpibut_match(struct device *parent, struct cfdata *match, void *aux) 85 { 86 struct acpi_attach_args *aa = aux; 87 88 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 89 return (0); 90 91 if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0C") == 0 || 92 strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0E") == 0) 93 return (1); 94 95 return (0); 96 } 97 98 /* 99 * acpibut_attach: 100 * 101 * Autoconfiguration `attach' routine. 102 */ 103 void 104 acpibut_attach(struct device *parent, struct device *self, void *aux) 105 { 106 struct acpibut_softc *sc = (void *) self; 107 struct acpi_attach_args *aa = aux; 108 const char *desc; 109 ACPI_STATUS rv; 110 111 if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0C") == 0) { 112 sc->sc_buttype = ACPIBUT_TYPE_POWER; 113 desc = "Power"; 114 } else if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0E") == 0) { 115 sc->sc_buttype = ACPIBUT_TYPE_SLEEP; 116 desc = "Sleep"; 117 } else { 118 printf("\n"); 119 panic("acpibut_attach: impossible"); 120 } 121 122 printf(": ACPI %s Button\n", desc); 123 124 sc->sc_node = aa->aa_node; 125 126 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 127 ACPI_DEVICE_NOTIFY, acpibut_notify_handler, sc); 128 if (rv != AE_OK) { 129 printf("%s: unable to register device notify handler: %d\n", 130 sc->sc_dev.dv_xname, rv); 131 return; 132 } 133 134 #ifdef ACPI_BUT_DEBUG 135 /* Display the current state when it changes. */ 136 sc->sc_flags = ACPIBUT_F_VERBOSE; 137 #endif 138 } 139 140 /* 141 * acpibut_pressed_for_sleep: 142 * 143 * Deal with a button being pressed for sleep. 144 */ 145 void 146 acpibut_pressed_for_sleep(void *arg) 147 { 148 struct acpibut_softc *sc = arg; 149 150 if (sc->sc_flags & ACPIBUT_F_VERBOSE) 151 printf("%s: button pressed for sleep\n", 152 sc->sc_dev.dv_xname); 153 154 /* 155 * XXX Perform the appropriate action. 156 */ 157 } 158 159 /* 160 * acpibut_pressed_for_wakeup: 161 * 162 * Deal with a button being pressed for wakeup. 163 */ 164 void 165 acpibut_pressed_for_wakeup(void *arg) 166 { 167 struct acpibut_softc *sc = arg; 168 169 if (sc->sc_flags & ACPIBUT_F_VERBOSE) 170 printf("%s: button pressed for wakeup\n", 171 sc->sc_dev.dv_xname); 172 173 /* 174 * XXX Perform the appropriate action. 175 */ 176 } 177 178 /* 179 * acpibut_notify_handler: 180 * 181 * Callback from ACPI interrupt handler to notify us of an event. 182 */ 183 void 184 acpibut_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 185 { 186 struct acpibut_softc *sc = context; 187 int rv; 188 189 switch (notify) { 190 case ACPI_NOTIFY_S0PowerButtonPressed: 191 #if 0 192 case ACPI_NOTIFY_S0SleepButtonPressed: /* same as above */ 193 #endif 194 #ifdef ACPI_BUT_DEBUG 195 printf("%s: received ButtonPressed message\n", 196 sc->sc_dev.dv_xname); 197 #endif 198 rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO, 199 acpibut_pressed_for_sleep, sc); 200 if (rv != AE_OK) 201 printf("%s: WARNING: unable to queue button pressed " 202 "event: %d\n", sc->sc_dev.dv_xname, rv); 203 break; 204 205 /* XXX ACPI_NOTIFY_DeviceWake?? */ 206 207 default: 208 printf("%s: received unknown notify message: 0x%x\n", 209 sc->sc_dev.dv_xname, notify); 210 } 211 } 212