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/include/acpi.h> 41 #include <contrib/dev/acpica/include/accommon.h> 42 43 #include <dev/acpica/acpivar.h> 44 45 /* Hooks for the ACPI CA debugging infrastructure */ 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 ACPI_SERIAL_DECL(lid, "ACPI lid"); 56 57 static int acpi_lid_probe(device_t dev); 58 static int acpi_lid_attach(device_t dev); 59 static int acpi_lid_suspend(device_t dev); 60 static int acpi_lid_resume(device_t dev); 61 static void acpi_lid_notify_status_changed(void *arg); 62 static void acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, 63 void *context); 64 65 static device_method_t acpi_lid_methods[] = { 66 /* Device interface */ 67 DEVMETHOD(device_probe, acpi_lid_probe), 68 DEVMETHOD(device_attach, acpi_lid_attach), 69 DEVMETHOD(device_suspend, acpi_lid_suspend), 70 DEVMETHOD(device_resume, acpi_lid_resume), 71 72 DEVMETHOD_END 73 }; 74 75 static driver_t acpi_lid_driver = { 76 "acpi_lid", 77 acpi_lid_methods, 78 sizeof(struct acpi_lid_softc), 79 }; 80 81 static devclass_t acpi_lid_devclass; 82 DRIVER_MODULE(acpi_lid, acpi, acpi_lid_driver, acpi_lid_devclass, 0, 0); 83 MODULE_DEPEND(acpi_lid, acpi, 1, 1, 1); 84 85 static int 86 acpi_lid_probe(device_t dev) 87 { 88 static char *lid_ids[] = { "PNP0C0D", NULL }; 89 90 if (acpi_disabled("lid") || 91 ACPI_ID_PROBE(device_get_parent(dev), dev, lid_ids) == NULL) 92 return (ENXIO); 93 94 device_set_desc(dev, "Control Method Lid Switch"); 95 return (0); 96 } 97 98 static int 99 acpi_lid_attach(device_t dev) 100 { 101 struct acpi_prw_data prw; 102 struct acpi_lid_softc *sc; 103 104 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 105 106 sc = device_get_softc(dev); 107 sc->lid_dev = dev; 108 sc->lid_handle = acpi_get_handle(dev); 109 110 /* 111 * If a system does not get lid events, it may make sense to change 112 * the type to ACPI_ALL_NOTIFY. Some systems generate both a wake and 113 * runtime notify in that case though. 114 */ 115 AcpiInstallNotifyHandler(sc->lid_handle, ACPI_DEVICE_NOTIFY, 116 acpi_lid_notify_handler, sc); 117 118 /* Enable the GPE for wake/runtime. */ 119 acpi_wake_set_enable(dev, 1); 120 if (acpi_parse_prw(sc->lid_handle, &prw) == 0) 121 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit); 122 123 return (0); 124 } 125 126 static int 127 acpi_lid_suspend(device_t dev) 128 { 129 return (0); 130 } 131 132 static int 133 acpi_lid_resume(device_t dev) 134 { 135 return (0); 136 } 137 138 static void 139 acpi_lid_notify_status_changed(void *arg) 140 { 141 struct acpi_lid_softc *sc; 142 struct acpi_softc *acpi_sc; 143 ACPI_STATUS status; 144 145 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 146 147 sc = (struct acpi_lid_softc *)arg; 148 ACPI_SERIAL_BEGIN(lid); 149 150 /* 151 * Evaluate _LID and check the return value, update lid status. 152 * Zero: The lid is closed 153 * Non-zero: The lid is open 154 */ 155 status = acpi_GetInteger(sc->lid_handle, "_LID", &sc->lid_status); 156 if (ACPI_FAILURE(status)) 157 goto out; 158 159 acpi_sc = acpi_device_get_parent_softc(sc->lid_dev); 160 if (acpi_sc == NULL) 161 goto out; 162 163 ACPI_VPRINT(sc->lid_dev, acpi_sc, "Lid %s\n", 164 sc->lid_status ? "opened" : "closed"); 165 166 acpi_UserNotify("Lid", sc->lid_handle, sc->lid_status); 167 168 if (sc->lid_status == 0) 169 EVENTHANDLER_INVOKE(acpi_sleep_event, acpi_sc->acpi_lid_switch_sx); 170 else 171 EVENTHANDLER_INVOKE(acpi_wakeup_event, acpi_sc->acpi_lid_switch_sx); 172 173 out: 174 ACPI_SERIAL_END(lid); 175 return_VOID; 176 } 177 178 /* XXX maybe not here */ 179 #define ACPI_NOTIFY_STATUS_CHANGED 0x80 180 181 static void 182 acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 183 { 184 struct acpi_lid_softc *sc; 185 186 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 187 188 sc = (struct acpi_lid_softc *)context; 189 switch (notify) { 190 case ACPI_NOTIFY_STATUS_CHANGED: 191 AcpiOsExecute(OSL_NOTIFY_HANDLER, 192 acpi_lid_notify_status_changed, sc); 193 break; 194 default: 195 device_printf(sc->lid_dev, "unknown notify %#x\n", notify); 196 break; 197 } 198 199 return_VOID; 200 } 201