acpi_acad.c revision 1.4
1 /* $NetBSD: acpi_acad.c,v 1.4 2002/09/30 20:41:17 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/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: acpi_acad.c,v 1.4 2002/09/30 20:41:17 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 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 CFATTACH_DECL(acpiacad, sizeof(struct acpiacad_softc), 66 acpiacad_match, acpiacad_attach, NULL, NULL) 67 68 void acpiacad_get_status(void *); 69 void acpiacad_notify_handler(ACPI_HANDLE, UINT32, void *context); 70 71 /* 72 * acpiacad_match: 73 * 74 * Autoconfiguration `match' routine. 75 */ 76 int 77 acpiacad_match(struct device *parent, struct cfdata *match, void *aux) 78 { 79 struct acpi_attach_args *aa = aux; 80 81 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 82 return (0); 83 84 if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "ACPI0003") == 0) 85 return (1); 86 87 return (0); 88 } 89 90 /* 91 * acpiacad_attach: 92 * 93 * Autoconfiguration `attach' routine. 94 */ 95 void 96 acpiacad_attach(struct device *parent, struct device *self, void *aux) 97 { 98 struct acpiacad_softc *sc = (void *) self; 99 struct acpi_attach_args *aa = aux; 100 ACPI_STATUS rv; 101 102 printf(": ACPI AC Adapter\n"); 103 104 sc->sc_node = aa->aa_node; 105 106 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 107 ACPI_DEVICE_NOTIFY, acpiacad_notify_handler, sc); 108 if (rv != AE_OK) { 109 printf("%s: unable to register DEVICE NOTIFY handler: %d\n", 110 sc->sc_dev.dv_xname, rv); 111 return; 112 } 113 114 /* XXX See acpiacad_notify_handler() */ 115 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 116 ACPI_SYSTEM_NOTIFY, acpiacad_notify_handler, sc); 117 if (rv != AE_OK) { 118 printf("%s: unable to register SYSTEM NOTIFY handler: %d\n", 119 sc->sc_dev.dv_xname, rv); 120 return; 121 } 122 123 /* Display the current state. */ 124 sc->sc_flags = AACAD_F_VERBOSE; 125 acpiacad_get_status(sc); 126 127 /* 128 * XXX Hook into sysmon here. 129 */ 130 } 131 132 /* 133 * acpiacad_get_status: 134 * 135 * Get, and possibly display, the current AC line status. 136 */ 137 void 138 acpiacad_get_status(void *arg) 139 { 140 struct acpiacad_softc *sc = arg; 141 142 if (acpi_eval_integer(sc->sc_node->ad_handle, "_PSR", 143 &sc->sc_status) != AE_OK) 144 return; 145 146 if (sc->sc_flags & AACAD_F_VERBOSE) 147 printf("%s: AC adapter %sconnected\n", 148 sc->sc_dev.dv_xname, sc->sc_status == 0 ? "not " : ""); 149 } 150 151 /* 152 * acpiacad_notify_handler: 153 * 154 * Callback from ACPI interrupt handler to notify us of an event. 155 */ 156 void 157 acpiacad_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 158 { 159 struct acpiacad_softc *sc = context; 160 int rv; 161 162 switch (notify) { 163 /* 164 * XXX So, BusCheck is not exactly what I would expect, 165 * but at least my IBM T21 sends it on AC adapter status 166 * change. --thorpej (at) wasabisystems.com 167 */ 168 case ACPI_NOTIFY_BusCheck: 169 case ACPI_NOTIFY_PowerSourceStatusChanged: 170 #ifdef ACPI_ACAD_DEBUG 171 printf("%s: received notify message: 0x%x\n", 172 sc->sc_dev.dv_xname, notify); 173 #endif 174 rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO, 175 acpiacad_get_status, sc); 176 if (rv != AE_OK) 177 printf("%s: unable to queue status check: %d\n", 178 sc->sc_dev.dv_xname, rv); 179 break; 180 181 default: 182 printf("%s: received unknown notify message: 0x%x\n", 183 sc->sc_dev.dv_xname, notify); 184 } 185 } 186
Indexes created Wed Sep 24 05:09:52 GMT 2025