1 /* $NetBSD: acpi_button.c,v 1.9 2003/04/18 01:31:34 thorpej Exp $ */ 2 3 /* 4 * Copyright 2001, 2003 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 1.9 2003/04/18 01:31:34 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 #include <dev/sysmon/sysmonvar.h> 54 55 struct acpibut_softc { 56 struct device sc_dev; /* base device glue */ 57 struct acpi_devnode *sc_node; /* our ACPI devnode */ 58 struct sysmon_pswitch sc_smpsw; /* our sysmon glue */ 59 int sc_flags; /* see below */ 60 }; 61 62 #define ACPIBUT_F_VERBOSE 0x01 /* verbose events */ 63 64 int acpibut_match(struct device *, struct cfdata *, void *); 65 void acpibut_attach(struct device *, struct device *, void *); 66 67 CFATTACH_DECL(acpibut, sizeof(struct acpibut_softc), 68 acpibut_match, acpibut_attach, NULL, NULL); 69 70 void acpibut_pressed_event(void *); 71 void acpibut_notify_handler(ACPI_HANDLE, UINT32, void *context); 72 73 /* 74 * acpibut_match: 75 * 76 * Autoconfiguration `match' routine. 77 */ 78 int 79 acpibut_match(struct device *parent, struct cfdata *match, void *aux) 80 { 81 struct acpi_attach_args *aa = aux; 82 83 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 84 return (0); 85 86 if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0C") == 0 || 87 strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0E") == 0) 88 return (1); 89 90 return (0); 91 } 92 93 /* 94 * acpibut_attach: 95 * 96 * Autoconfiguration `attach' routine. 97 */ 98 void 99 acpibut_attach(struct device *parent, struct device *self, void *aux) 100 { 101 struct acpibut_softc *sc = (void *) self; 102 struct acpi_attach_args *aa = aux; 103 const char *desc; 104 ACPI_STATUS rv; 105 106 sc->sc_smpsw.smpsw_name = sc->sc_dev.dv_xname; 107 108 if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0C") == 0) { 109 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_POWER; 110 desc = "Power"; 111 } else if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0E") == 0) { 112 sc->sc_smpsw.smpsw_type = PSWITCH_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 if (sysmon_pswitch_register(&sc->sc_smpsw) != 0) { 124 printf("%s: unable to register with sysmon\n", 125 sc->sc_dev.dv_xname); 126 return; 127 } 128 129 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 130 ACPI_DEVICE_NOTIFY, acpibut_notify_handler, sc); 131 if (rv != AE_OK) { 132 printf("%s: unable to register device notify handler: %d\n", 133 sc->sc_dev.dv_xname, rv); 134 return; 135 } 136 137 #ifdef ACPI_BUT_DEBUG 138 /* Display the current state when it changes. */ 139 sc->sc_flags = ACPIBUT_F_VERBOSE; 140 #endif 141 } 142 143 /* 144 * acpibut_pressed_event: 145 * 146 * Deal with a button being pressed. 147 */ 148 void 149 acpibut_pressed_event(void *arg) 150 { 151 struct acpibut_softc *sc = arg; 152 153 if (sc->sc_flags & ACPIBUT_F_VERBOSE) 154 printf("%s: button pressed\n", sc->sc_dev.dv_xname); 155 156 sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); 157 } 158 159 /* 160 * acpibut_notify_handler: 161 * 162 * Callback from ACPI interrupt handler to notify us of an event. 163 */ 164 void 165 acpibut_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 166 { 167 struct acpibut_softc *sc = context; 168 int rv; 169 170 switch (notify) { 171 case ACPI_NOTIFY_S0PowerButtonPressed: 172 #if 0 173 case ACPI_NOTIFY_S0SleepButtonPressed: /* same as above */ 174 #endif 175 #ifdef ACPI_BUT_DEBUG 176 printf("%s: received ButtonPressed message\n", 177 sc->sc_dev.dv_xname); 178 #endif 179 rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO, 180 acpibut_pressed_event, sc); 181 if (rv != AE_OK) 182 printf("%s: WARNING: unable to queue button pressed " 183 "callback: %d\n", sc->sc_dev.dv_xname, rv); 184 break; 185 186 /* XXX ACPI_NOTIFY_DeviceWake?? */ 187 188 default: 189 printf("%s: received unknown notify message: 0x%x\n", 190 sc->sc_dev.dv_xname, notify); 191 } 192 } 193