1 /* $NetBSD: acpi_acad.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 AC Adapter driver. 40 */ 41 42 #include <sys/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: acpi_acad.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 struct acpiacad_softc { 54 struct device sc_dev; /* base device glue */ 55 struct acpi_devnode *sc_node; /* our ACPI devnode */ 56 int sc_flags; /* see below */ 57 int sc_status; /* power status */ 58 }; 59 60 #define AACAD_F_VERBOSE 0x01 /* verbose events */ 61 62 int acpiacad_match(struct device *, struct cfdata *, void *); 63 void acpiacad_attach(struct device *, struct device *, void *); 64 65 struct cfattach acpiacad_ca = { 66 sizeof(struct acpiacad_softc), acpiacad_match, acpiacad_attach, 67 }; 68 69 void acpiacad_get_status(void *); 70 void acpiacad_notify_handler(ACPI_HANDLE, UINT32, void *context); 71 72 /* 73 * acpiacad_match: 74 * 75 * Autoconfiguration `match' routine. 76 */ 77 int 78 acpiacad_match(struct device *parent, struct cfdata *match, void *aux) 79 { 80 struct acpi_attach_args *aa = aux; 81 82 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 83 return (0); 84 85 if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "ACPI0003") == 0) 86 return (1); 87 88 return (0); 89 } 90 91 /* 92 * acpiacad_attach: 93 * 94 * Autoconfiguration `attach' routine. 95 */ 96 void 97 acpiacad_attach(struct device *parent, struct device *self, void *aux) 98 { 99 struct acpiacad_softc *sc = (void *) self; 100 struct acpi_attach_args *aa = aux; 101 ACPI_STATUS rv; 102 103 printf(": ACPI AC Adapter\n"); 104 105 sc->sc_node = aa->aa_node; 106 107 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 108 ACPI_DEVICE_NOTIFY, acpiacad_notify_handler, sc); 109 if (rv != AE_OK) { 110 printf("%s: unable to register DEVICE NOTIFY handler: %d\n", 111 sc->sc_dev.dv_xname, rv); 112 return; 113 } 114 115 /* XXX See acpiacad_notify_handler() */ 116 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 117 ACPI_SYSTEM_NOTIFY, acpiacad_notify_handler, sc); 118 if (rv != AE_OK) { 119 printf("%s: unable to register SYSTEM NOTIFY handler: %d\n", 120 sc->sc_dev.dv_xname, rv); 121 return; 122 } 123 124 /* Display the current state. */ 125 sc->sc_flags = AACAD_F_VERBOSE; 126 acpiacad_get_status(sc); 127 128 /* 129 * XXX Hook into sysmon here. 130 */ 131 } 132 133 /* 134 * acpiacad_get_status: 135 * 136 * Get, and possibly display, the current AC line status. 137 */ 138 void 139 acpiacad_get_status(void *arg) 140 { 141 struct acpiacad_softc *sc = arg; 142 143 if (acpi_eval_integer(sc->sc_node->ad_handle, "_PSR", 144 &sc->sc_status) != AE_OK) 145 return; 146 147 if (sc->sc_flags & AACAD_F_VERBOSE) 148 printf("%s: AC adapter %sconnected\n", 149 sc->sc_dev.dv_xname, sc->sc_status == 0 ? "not " : ""); 150 } 151 152 /* 153 * acpiacad_notify_handler: 154 * 155 * Callback from ACPI interrupt handler to notify us of an event. 156 */ 157 void 158 acpiacad_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 159 { 160 struct acpiacad_softc *sc = context; 161 int rv; 162 163 switch (notify) { 164 /* 165 * XXX So, BusCheck is not exactly what I would expect, 166 * but at least my IBM T21 sends it on AC adapter status 167 * change. --thorpej@wasabisystems.com 168 */ 169 case ACPI_NOTIFY_BusCheck: 170 case ACPI_NOTIFY_PowerSourceStatusChanged: 171 #ifdef ACPI_ACAD_DEBUG 172 printf("%s: received notify message: 0x%x\n", 173 sc->sc_dev.dv_xname, notify); 174 #endif 175 rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO, 176 acpiacad_get_status, sc); 177 if (rv != AE_OK) 178 printf("%s: unable to queue status check: %d\n", 179 sc->sc_dev.dv_xname, rv); 180 break; 181 182 default: 183 printf("%s: received unknown notify message: 0x%x\n", 184 sc->sc_dev.dv_xname, notify); 185 } 186 } 187