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/module.h> 37 #include <sys/bus.h> 38 #include <sys/proc.h> 39 40 #include <contrib/dev/acpica/acpi.h> 41 #include <dev/acpica/acpivar.h> 42 43 /* Hooks for the ACPI CA debugging infrastructure */ 44 #define _COMPONENT ACPI_BUTTON 45 ACPI_MODULE_NAME("LID") 46 47 struct acpi_lid_softc { 48 device_t lid_dev; 49 ACPI_HANDLE lid_handle; 50 int lid_status; /* open or closed */ 51 }; 52 53 ACPI_SERIAL_DECL(lid, "ACPI lid"); 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, 61 void *context); 62 63 static device_method_t acpi_lid_methods[] = { 64 /* Device interface */ 65 DEVMETHOD(device_probe, acpi_lid_probe), 66 DEVMETHOD(device_attach, acpi_lid_attach), 67 DEVMETHOD(device_suspend, acpi_lid_suspend), 68 DEVMETHOD(device_resume, acpi_lid_resume), 69 70 {0, 0} 71 }; 72 73 static driver_t acpi_lid_driver = { 74 "acpi_lid", 75 acpi_lid_methods, 76 sizeof(struct acpi_lid_softc), 77 }; 78 79 static devclass_t acpi_lid_devclass; 80 DRIVER_MODULE(acpi_lid, acpi, acpi_lid_driver, acpi_lid_devclass, 0, 0); 81 MODULE_DEPEND(acpi_lid, acpi, 1, 1, 1); 82 83 static int 84 acpi_lid_probe(device_t dev) 85 { 86 static char *lid_ids[] = { "PNP0C0D", NULL }; 87 88 if (acpi_disabled("lid") || 89 ACPI_ID_PROBE(device_get_parent(dev), dev, lid_ids) == NULL) 90 return (ENXIO); 91 92 device_set_desc(dev, "Control Method Lid Switch"); 93 return (0); 94 } 95 96 static int 97 acpi_lid_attach(device_t dev) 98 { 99 struct acpi_lid_softc *sc; 100 101 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 102 103 sc = device_get_softc(dev); 104 sc->lid_dev = dev; 105 sc->lid_handle = acpi_get_handle(dev); 106 107 /* 108 * If a system does not get lid events, it may make sense to change 109 * the type to ACPI_ALL_NOTIFY. Some systems generate both a wake and 110 * runtime notify in that case though. 111 */ 112 AcpiInstallNotifyHandler(sc->lid_handle, ACPI_DEVICE_NOTIFY, 113 acpi_lid_notify_handler, sc); 114 115 /* Enable the GPE for wake/runtime. */ 116 acpi_wake_init(dev, ACPI_GPE_TYPE_WAKE_RUN); 117 acpi_wake_set_enable(dev, 1); 118 119 return (0); 120 } 121 122 static int 123 acpi_lid_suspend(device_t dev) 124 { 125 return (0); 126 } 127 128 static int 129 acpi_lid_resume(device_t dev) 130 { 131 return (0); 132 } 133 134 static void 135 acpi_lid_notify_status_changed(void *arg) 136 { 137 struct acpi_lid_softc *sc; 138 struct acpi_softc *acpi_sc; 139 ACPI_STATUS status; 140 141 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 142 143 sc = (struct acpi_lid_softc *)arg; 144 ACPI_SERIAL_BEGIN(lid); 145 146 /* 147 * Evaluate _LID and check the return value, update lid status. 148 * Zero: The lid is closed 149 * Non-zero: The lid is open 150 */ 151 status = acpi_GetInteger(sc->lid_handle, "_LID", &sc->lid_status); 152 if (ACPI_FAILURE(status)) 153 goto out; 154 155 acpi_sc = acpi_device_get_parent_softc(sc->lid_dev); 156 if (acpi_sc == NULL) 157 goto out; 158 159 ACPI_VPRINT(sc->lid_dev, acpi_sc, "Lid %s\n", 160 sc->lid_status ? "opened" : "closed"); 161 162 acpi_UserNotify("Lid", sc->lid_handle, sc->lid_status); 163 164 if (sc->lid_status == 0) 165 EVENTHANDLER_INVOKE(acpi_sleep_event, acpi_sc->acpi_lid_switch_sx); 166 else 167 EVENTHANDLER_INVOKE(acpi_wakeup_event, acpi_sc->acpi_lid_switch_sx); 168 169 out: 170 ACPI_SERIAL_END(lid); 171 return_VOID; 172 } 173 174 /* XXX maybe not here */ 175 #define ACPI_NOTIFY_STATUS_CHANGED 0x80 176 177 static void 178 acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 179 { 180 struct acpi_lid_softc *sc; 181 182 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 183 184 sc = (struct acpi_lid_softc *)context; 185 switch (notify) { 186 case ACPI_NOTIFY_STATUS_CHANGED: 187 AcpiOsExecute(OSL_NOTIFY_HANDLER, 188 acpi_lid_notify_status_changed, sc); 189 break; 190 default: 191 device_printf(sc->lid_dev, "unknown notify %#x\n", notify); 192 break; 193 } 194 195 return_VOID; 196 } 197