1 /* $NetBSD: acpi_acad.c,v 1.1 2001/09/29 05:35:06 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 AC Adapter driver. 40 */ 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 46 #include <dev/acpi/acpica.h> 47 #include <dev/acpi/acpireg.h> 48 #include <dev/acpi/acpivar.h> 49 50 struct acpiacad_softc { 51 struct device sc_dev; /* base device glue */ 52 struct acpi_devnode *sc_node; /* our ACPI devnode */ 53 int sc_flags; /* see below */ 54 int sc_status; /* power status */ 55 }; 56 57 #define AACAD_F_VERBOSE 0x01 /* verbose events */ 58 59 int acpiacad_match(struct device *, struct cfdata *, void *); 60 void acpiacad_attach(struct device *, struct device *, void *); 61 62 struct cfattach acpiacad_ca = { 63 sizeof(struct acpiacad_softc), acpiacad_match, acpiacad_attach, 64 }; 65 66 void acpiacad_get_status(void *); 67 void acpiacad_notify_handler(ACPI_HANDLE, UINT32, void *context); 68 69 /* 70 * acpiacad_match: 71 * 72 * Autoconfiguration `match' routine. 73 */ 74 int 75 acpiacad_match(struct device *parent, struct cfdata *match, void *aux) 76 { 77 struct acpi_attach_args *aa = aux; 78 79 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 80 return (0); 81 82 if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "ACPI0003") == 0) 83 return (1); 84 85 return (0); 86 } 87 88 /* 89 * acpiacad_attach: 90 * 91 * Autoconfiguration `attach' routine. 92 */ 93 void 94 acpiacad_attach(struct device *parent, struct device *self, void *aux) 95 { 96 struct acpiacad_softc *sc = (void *) self; 97 struct acpi_attach_args *aa = aux; 98 ACPI_STATUS rv; 99 100 printf(": ACPI AC Adapter\n"); 101 102 sc->sc_node = aa->aa_node; 103 104 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 105 ACPI_DEVICE_NOTIFY, acpiacad_notify_handler, sc); 106 if (rv != AE_OK) { 107 printf("%s: unable to register DEVICE NOTIFY handler: %d\n", 108 sc->sc_dev.dv_xname, rv); 109 return; 110 } 111 112 /* XXX See acpiacad_notify_handler() */ 113 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 114 ACPI_SYSTEM_NOTIFY, acpiacad_notify_handler, sc); 115 if (rv != AE_OK) { 116 printf("%s: unable to register SYSTEM NOTIFY handler: %d\n", 117 sc->sc_dev.dv_xname, rv); 118 return; 119 } 120 121 /* Display the current state. */ 122 sc->sc_flags = AACAD_F_VERBOSE; 123 acpiacad_get_status(sc); 124 125 /* 126 * XXX Hook into sysmon here. 127 */ 128 } 129 130 /* 131 * acpiacad_get_status: 132 * 133 * Get, and possibly display, the current AC line status. 134 */ 135 void 136 acpiacad_get_status(void *arg) 137 { 138 struct acpiacad_softc *sc = arg; 139 140 if (acpi_eval_integer(sc->sc_node->ad_handle, "_PSR", 141 &sc->sc_status) != AE_OK) 142 return; 143 144 if (sc->sc_flags & AACAD_F_VERBOSE) 145 printf("%s: AC adapter %sconnected\n", 146 sc->sc_dev.dv_xname, sc->sc_status == 0 ? "not " : ""); 147 } 148 149 /* 150 * acpiacad_notify_handler: 151 * 152 * Callback from ACPI interrupt handler to notify us of an event. 153 */ 154 void 155 acpiacad_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 156 { 157 struct acpiacad_softc *sc = context; 158 int rv; 159 160 switch (notify) { 161 /* 162 * XXX So, BusCheck is not exactly what I would expect, 163 * but at least my IBM T21 sends it on AC adapter status 164 * change. --thorpej@wasabisystems.com 165 */ 166 case ACPI_NOTIFY_BusCheck: 167 case ACPI_NOTIFY_PowerSourceStatusChanged: 168 #ifdef ACPI_ACAD_DEBUG 169 printf("%s: received notify message: 0x%x\n", 170 sc->sc_dev.dv_xname, notify); 171 #endif 172 rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO, 173 acpiacad_get_status, sc); 174 if (rv != AE_OK) 175 printf("%s: unable to queue status check: %d\n", 176 sc->sc_dev.dv_xname, rv); 177 break; 178 179 default: 180 printf("%s: received unknown notify message: 0x%x\n", 181 sc->sc_dev.dv_xname, notify); 182 } 183 } 184