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 "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 static int acpi_lid_probe(device_t dev); 54 static int acpi_lid_attach(device_t dev); 55 static int acpi_lid_suspend(device_t dev); 56 static int acpi_lid_resume(device_t dev); 57 static void acpi_lid_notify_status_changed(void *arg); 58 static void acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, 59 void *context); 60 61 static device_method_t acpi_lid_methods[] = { 62 /* Device interface */ 63 DEVMETHOD(device_probe, acpi_lid_probe), 64 DEVMETHOD(device_attach, acpi_lid_attach), 65 DEVMETHOD(device_suspend, acpi_lid_suspend), 66 DEVMETHOD(device_resume, acpi_lid_resume), 67 68 {0, 0} 69 }; 70 71 static driver_t acpi_lid_driver = { 72 "acpi_lid", 73 acpi_lid_methods, 74 sizeof(struct acpi_lid_softc), 75 }; 76 77 static devclass_t acpi_lid_devclass; 78 DRIVER_MODULE(acpi_lid, acpi, acpi_lid_driver, acpi_lid_devclass, 0, 0); 79 MODULE_DEPEND(acpi_lid, acpi, 1, 1, 1); 80 81 static int 82 acpi_lid_probe(device_t dev) 83 { 84 static char *lid_ids[] = { "PNP0C0D", NULL }; 85 86 if (acpi_disabled("lid") || 87 ACPI_ID_PROBE(device_get_parent(dev), dev, lid_ids) == NULL) 88 return (ENXIO); 89 90 device_set_desc(dev, "Control Method Lid Switch"); 91 return (0); 92 } 93 94 static int 95 acpi_lid_attach(device_t dev) 96 { 97 struct acpi_lid_softc *sc; 98 99 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 100 101 sc = device_get_softc(dev); 102 sc->lid_dev = dev; 103 sc->lid_handle = acpi_get_handle(dev); 104 105 /* 106 * If a system does not get lid events, it may make sense to change 107 * the type to ACPI_ALL_NOTIFY. Some systems generate both a wake and 108 * runtime notify in that case though. 109 */ 110 AcpiInstallNotifyHandler(sc->lid_handle, ACPI_DEVICE_NOTIFY, 111 acpi_lid_notify_handler, sc); 112 113 /* Enable the GPE for wake/runtime. */ 114 acpi_wake_init(dev, ACPI_GPE_TYPE_WAKE_RUN); 115 acpi_wake_set_enable(dev, 1); 116 117 return_VALUE (0); 118 } 119 120 static int 121 acpi_lid_suspend(device_t dev) 122 { 123 return (0); 124 } 125 126 static int 127 acpi_lid_resume(device_t dev) 128 { 129 return (0); 130 } 131 132 static void 133 acpi_lid_notify_status_changed(void *arg) 134 { 135 struct acpi_lid_softc *sc; 136 struct acpi_softc *acpi_sc; 137 ACPI_STATUS status; 138 139 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 140 141 sc = (struct acpi_lid_softc *)arg; 142 143 /* 144 * Evaluate _LID and check the return value, update lid status. 145 * Zero: The lid is closed 146 * Non-zero: The lid is open 147 */ 148 status = acpi_GetInteger(sc->lid_handle, "_LID", &sc->lid_status); 149 if (ACPI_FAILURE(status)) 150 return_VOID; 151 152 acpi_sc = acpi_device_get_parent_softc(sc->lid_dev); 153 if (acpi_sc == NULL) 154 return_VOID; 155 156 ACPI_VPRINT(sc->lid_dev, acpi_sc, "Lid %s\n", 157 sc->lid_status ? "opened" : "closed"); 158 159 acpi_UserNotify("Lid", sc->lid_handle, sc->lid_status); 160 161 if (sc->lid_status == 0) 162 EVENTHANDLER_INVOKE(acpi_sleep_event, acpi_sc->acpi_lid_switch_sx); 163 else 164 EVENTHANDLER_INVOKE(acpi_wakeup_event, acpi_sc->acpi_lid_switch_sx); 165 166 return_VOID; 167 } 168 169 /* XXX maybe not here */ 170 #define ACPI_NOTIFY_STATUS_CHANGED 0x80 171 172 static void 173 acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 174 { 175 struct acpi_lid_softc *sc; 176 177 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 178 179 sc = (struct acpi_lid_softc *)context; 180 switch (notify) { 181 case ACPI_NOTIFY_STATUS_CHANGED: 182 AcpiOsQueueForExecution(OSD_PRIORITY_LO, 183 acpi_lid_notify_status_changed, sc); 184 break; 185 default: 186 device_printf(sc->lid_dev, "unknown notify %#x\n", notify); 187 break; 188 } 189 190 return_VOID; 191 } 192