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, void *context); 58 59 static device_method_t acpi_lid_methods[] = { 60 /* Device interface */ 61 DEVMETHOD(device_probe, acpi_lid_probe), 62 DEVMETHOD(device_attach, acpi_lid_attach), 63 DEVMETHOD(device_suspend, acpi_lid_suspend), 64 DEVMETHOD(device_resume, acpi_lid_resume), 65 66 {0, 0} 67 }; 68 69 static driver_t acpi_lid_driver = { 70 "acpi_lid", 71 acpi_lid_methods, 72 sizeof(struct acpi_lid_softc), 73 }; 74 75 static devclass_t acpi_lid_devclass; 76 DRIVER_MODULE(acpi_lid, acpi, acpi_lid_driver, acpi_lid_devclass, 0, 0); 77 78 static int 79 acpi_lid_probe(device_t dev) 80 { 81 if (acpi_get_type(dev) == ACPI_TYPE_DEVICE && !acpi_disabled("lid") && 82 acpi_MatchHid(dev, "PNP0C0D")) { 83 84 device_set_desc(dev, "Control Method Lid Switch"); 85 return (0); 86 } 87 return (ENXIO); 88 } 89 90 static int 91 acpi_lid_attach(device_t dev) 92 { 93 struct acpi_lid_softc *sc; 94 95 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 96 97 sc = device_get_softc(dev); 98 sc->lid_dev = dev; 99 sc->lid_handle = acpi_get_handle(dev); 100 101 /* Install notification handler */ 102 AcpiInstallNotifyHandler(sc->lid_handle, ACPI_DEVICE_NOTIFY, 103 acpi_lid_notify_handler, sc); 104 acpi_device_enable_wake_capability(sc->lid_handle, 1); 105 106 return_VALUE (0); 107 } 108 109 static int 110 acpi_lid_suspend(device_t dev) 111 { 112 struct acpi_lid_softc *sc; 113 114 sc = device_get_softc(dev); 115 acpi_device_enable_wake_event(sc->lid_handle); 116 return (0); 117 } 118 119 static int 120 acpi_lid_resume(device_t dev) 121 { 122 return (0); 123 } 124 125 static void 126 acpi_lid_notify_status_changed(void *arg) 127 { 128 struct acpi_lid_softc *sc; 129 struct acpi_softc *acpi_sc; 130 ACPI_STATUS status; 131 132 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 133 134 sc = (struct acpi_lid_softc *)arg; 135 136 /* 137 * Evaluate _LID and check the return value, update lid status. 138 * Zero: The lid is closed 139 * Non-zero: The lid is open 140 */ 141 status = acpi_EvaluateInteger(sc->lid_handle, "_LID", &sc->lid_status); 142 if (ACPI_FAILURE(status)) 143 return_VOID; 144 145 acpi_sc = acpi_device_get_parent_softc(sc->lid_dev); 146 if (acpi_sc == NULL) 147 return_VOID; 148 149 ACPI_VPRINT(sc->lid_dev, acpi_sc, "Lid %s\n", 150 sc->lid_status ? "opened" : "closed"); 151 152 if (sc->lid_status == 0) 153 EVENTHANDLER_INVOKE(acpi_sleep_event, acpi_sc->acpi_lid_switch_sx); 154 else 155 EVENTHANDLER_INVOKE(acpi_wakeup_event, acpi_sc->acpi_lid_switch_sx); 156 157 return_VOID; 158 } 159 160 /* XXX maybe not here */ 161 #define ACPI_NOTIFY_STATUS_CHANGED 0x80 162 163 static void 164 acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 165 { 166 struct acpi_lid_softc *sc = (struct acpi_lid_softc *)context; 167 168 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 169 170 switch (notify) { 171 case ACPI_NOTIFY_STATUS_CHANGED: 172 AcpiOsQueueForExecution(OSD_PRIORITY_LO, 173 acpi_lid_notify_status_changed, sc); 174 break; 175 default: 176 break; 177 } 178 179 return_VOID; 180 } 181 182