1 /*- 2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org> 3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org> 4 * Copyright (c) 2000 Michael Smith <msmith@freebd.org> 5 * Copyright (c) 2000 BSDi 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/sys/dev/acpica/acpi_lid.c,v 1.12.6.1 2003/08/22 20:49:20 jhb Exp $ 30 * $DragonFly: src/sys/dev/acpica/Attic/acpi_lid.c,v 1.1 2003/09/24 03:32:16 drhodus Exp $ 31 */ 32 33 #include "opt_acpi.h" 34 #include <sys/param.h> 35 #include <sys/kernel.h> 36 #include <sys/bus.h> 37 #include <sys/proc.h> 38 39 #include "acpi.h" 40 41 #include <dev/acpica/acpivar.h> 42 43 /* 44 * Hooks for the ACPI CA debugging infrastructure 45 */ 46 #define _COMPONENT ACPI_BUTTON 47 ACPI_MODULE_NAME("LID") 48 49 struct acpi_lid_softc { 50 device_t lid_dev; 51 ACPI_HANDLE lid_handle; 52 int lid_status; /* open or closed */ 53 }; 54 55 static int acpi_lid_probe(device_t dev); 56 static int acpi_lid_attach(device_t dev); 57 static int acpi_lid_suspend(device_t dev); 58 static int acpi_lid_resume(device_t dev); 59 static void acpi_lid_notify_status_changed(void *arg); 60 static void acpi_lid_notify_handler(ACPI_HANDLE h,UINT32 notify, void *context); 61 62 static device_method_t acpi_lid_methods[] = { 63 /* Device interface */ 64 DEVMETHOD(device_probe, acpi_lid_probe), 65 DEVMETHOD(device_attach, acpi_lid_attach), 66 DEVMETHOD(device_suspend, acpi_lid_suspend), 67 DEVMETHOD(device_resume, acpi_lid_resume), 68 69 {0, 0} 70 }; 71 72 static driver_t acpi_lid_driver = { 73 "acpi_lid", 74 acpi_lid_methods, 75 sizeof(struct acpi_lid_softc), 76 }; 77 78 static devclass_t acpi_lid_devclass; 79 DRIVER_MODULE(acpi_lid, acpi, acpi_lid_driver, acpi_lid_devclass, 0, 0); 80 81 static int 82 acpi_lid_probe(device_t dev) 83 { 84 if ((acpi_get_type(dev) == ACPI_TYPE_DEVICE) && 85 !acpi_disabled("lid") && 86 acpi_MatchHid(dev, "PNP0C0D")) { 87 device_set_desc(dev, "Control Method Lid Switch"); 88 return(0); 89 } 90 return(ENXIO); 91 } 92 93 static int 94 acpi_lid_attach(device_t dev) 95 { 96 struct acpi_lid_softc *sc; 97 98 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 99 100 sc = device_get_softc(dev); 101 sc->lid_dev = dev; 102 sc->lid_handle = acpi_get_handle(dev); 103 104 /* 105 * Install notification handler 106 */ 107 AcpiInstallNotifyHandler(sc->lid_handle, ACPI_DEVICE_NOTIFY, acpi_lid_notify_handler, sc); 108 acpi_device_enable_wake_capability(sc->lid_handle, 1); 109 return_VALUE(0); 110 } 111 112 static int 113 acpi_lid_suspend(device_t dev) 114 { 115 struct acpi_lid_softc *sc; 116 117 sc = device_get_softc(dev); 118 acpi_device_enable_wake_event(sc->lid_handle); 119 return (0); 120 } 121 122 static int 123 acpi_lid_resume(device_t dev) 124 { 125 return (0); 126 } 127 128 static void 129 acpi_lid_notify_status_changed(void *arg) 130 { 131 struct acpi_lid_softc *sc; 132 struct acpi_softc *acpi_sc; 133 134 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 135 136 sc = (struct acpi_lid_softc *)arg; 137 138 /* 139 * Evaluate _LID and check the return value, update lid status. 140 * Zero: The lid is closed 141 * Non-zero: The lid is open 142 */ 143 if (ACPI_FAILURE(acpi_EvaluateInteger(sc->lid_handle, "_LID", &sc->lid_status))) 144 return_VOID; 145 146 acpi_sc = acpi_device_get_parent_softc(sc->lid_dev); 147 if (acpi_sc == NULL) { 148 return_VOID; 149 } 150 151 ACPI_VPRINT(sc->lid_dev, acpi_sc, 152 "Lid %s\n", sc->lid_status ? "opened" : "closed"); 153 154 if (sc->lid_status == 0) { 155 EVENTHANDLER_INVOKE(acpi_sleep_event, acpi_sc->acpi_lid_switch_sx); 156 } else { 157 EVENTHANDLER_INVOKE(acpi_wakeup_event, acpi_sc->acpi_lid_switch_sx); 158 } 159 160 return_VOID; 161 } 162 163 /* XXX maybe not here */ 164 #define ACPI_NOTIFY_STATUS_CHANGED 0x80 165 166 static void 167 acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 168 { 169 struct acpi_lid_softc *sc = (struct acpi_lid_softc *)context; 170 171 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 172 173 switch (notify) { 174 case ACPI_NOTIFY_STATUS_CHANGED: 175 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_lid_notify_status_changed, sc); 176 break; 177 default: 178 break; /* unknown notification value */ 179 } 180 return_VOID; 181 } 182 183