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 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 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 #include <dev/acpica/acpivar.h> 41 42 /* Hooks for the ACPI CA debugging infrastructure */ 43 #define _COMPONENT ACPI_BUTTON 44 ACPI_MODULE_NAME("LID") 45 46 struct acpi_lid_softc { 47 device_t lid_dev; 48 ACPI_HANDLE lid_handle; 49 int lid_status; /* open or closed */ 50 }; 51 52 static int acpi_lid_probe(device_t dev); 53 static int acpi_lid_attach(device_t dev); 54 static int acpi_lid_suspend(device_t dev); 55 static int acpi_lid_resume(device_t dev); 56 static void acpi_lid_notify_status_changed(void *arg); 57 static void acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, 58 void *context); 59 60 static device_method_t acpi_lid_methods[] = { 61 /* Device interface */ 62 DEVMETHOD(device_probe, acpi_lid_probe), 63 DEVMETHOD(device_attach, acpi_lid_attach), 64 DEVMETHOD(device_suspend, acpi_lid_suspend), 65 DEVMETHOD(device_resume, acpi_lid_resume), 66 67 {0, 0} 68 }; 69 70 static driver_t acpi_lid_driver = { 71 "acpi_lid", 72 acpi_lid_methods, 73 sizeof(struct acpi_lid_softc), 74 }; 75 76 static devclass_t acpi_lid_devclass; 77 DRIVER_MODULE(acpi_lid, acpi, acpi_lid_driver, acpi_lid_devclass, 0, 0); 78 MODULE_DEPEND(acpi_lid, acpi, 1, 1, 1); 79 80 static int 81 acpi_lid_probe(device_t dev) 82 { 83 if (acpi_get_type(dev) == ACPI_TYPE_DEVICE && !acpi_disabled("lid") && 84 acpi_MatchHid(dev, "PNP0C0D")) { 85 86 device_set_desc(dev, "Control Method Lid Switch"); 87 return (0); 88 } 89 return (ENXIO); 90 } 91 92 static int 93 acpi_lid_attach(device_t dev) 94 { 95 struct acpi_lid_softc *sc; 96 97 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 98 99 sc = device_get_softc(dev); 100 sc->lid_dev = dev; 101 sc->lid_handle = acpi_get_handle(dev); 102 103 /* Install notification handler */ 104 AcpiInstallNotifyHandler(sc->lid_handle, ACPI_DEVICE_NOTIFY, 105 acpi_lid_notify_handler, sc); 106 acpi_device_enable_wake_capability(sc->lid_handle, 1); 107 108 return_VALUE (0); 109 } 110 111 static int 112 acpi_lid_suspend(device_t dev) 113 { 114 struct acpi_lid_softc *sc; 115 116 sc = device_get_softc(dev); 117 acpi_device_enable_wake_event(sc->lid_handle); 118 return (0); 119 } 120 121 static int 122 acpi_lid_resume(device_t dev) 123 { 124 return (0); 125 } 126 127 static void 128 acpi_lid_notify_status_changed(void *arg) 129 { 130 struct acpi_lid_softc *sc; 131 struct acpi_softc *acpi_sc; 132 ACPI_STATUS status; 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 status = acpi_GetInteger(sc->lid_handle, "_LID", &sc->lid_status); 144 if (ACPI_FAILURE(status)) 145 return_VOID; 146 147 acpi_sc = acpi_device_get_parent_softc(sc->lid_dev); 148 if (acpi_sc == NULL) 149 return_VOID; 150 151 ACPI_VPRINT(sc->lid_dev, acpi_sc, "Lid %s\n", 152 sc->lid_status ? "opened" : "closed"); 153 154 acpi_UserNotify("Lid", sc->lid_handle, sc->lid_status); 155 156 if (sc->lid_status == 0) 157 EVENTHANDLER_INVOKE(acpi_sleep_event, acpi_sc->acpi_lid_switch_sx); 158 else 159 EVENTHANDLER_INVOKE(acpi_wakeup_event, acpi_sc->acpi_lid_switch_sx); 160 161 return_VOID; 162 } 163 164 /* XXX maybe not here */ 165 #define ACPI_NOTIFY_STATUS_CHANGED 0x80 166 167 static void 168 acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 169 { 170 struct acpi_lid_softc *sc = (struct acpi_lid_softc *)context; 171 172 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 173 174 switch (notify) { 175 case ACPI_NOTIFY_STATUS_CHANGED: 176 AcpiOsQueueForExecution(OSD_PRIORITY_LO, 177 acpi_lid_notify_status_changed, sc); 178 break; 179 default: 180 break; 181 } 182 183 return_VOID; 184 } 185