1 /*- 2 * Copyright (c) 2000 Mitsaru IWASAKI <iwasaki@jp.freebsd.org> 3 * Copyright (c) 2000 Michael Smith <msmith@freebsd.org> 4 * Copyright (c) 2000 BSDi 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD: src/sys/dev/acpica/acpi_button.c,v 1.13.2.1 2003/08/22 20:49:20 jhb Exp $ 29 * $DragonFly: src/sys/dev/acpica/Attic/acpi_button.c,v 1.1 2003/09/24 03:32:16 drhodus Exp $ 30 */ 31 32 #include "opt_acpi.h" 33 #include <sys/param.h> 34 #include <sys/kernel.h> 35 #include <sys/bus.h> 36 37 #include "acpi.h" 38 39 #include <dev/acpica/acpivar.h> 40 41 /* 42 * Hooks for the ACPI CA debugging infrastructure 43 */ 44 #define _COMPONENT ACPI_BUTTON 45 ACPI_MODULE_NAME("BUTTON") 46 47 struct acpi_button_softc { 48 device_t button_dev; 49 ACPI_HANDLE button_handle; 50 #define ACPI_POWER_BUTTON 0 51 #define ACPI_SLEEP_BUTTON 1 52 boolean_t button_type; /* Power or Sleep Button */ 53 }; 54 55 static int acpi_button_probe(device_t dev); 56 static int acpi_button_attach(device_t dev); 57 static int acpi_button_suspend(device_t dev); 58 static int acpi_button_resume(device_t dev); 59 static void acpi_button_notify_handler(ACPI_HANDLE h,UINT32 notify, void *context); 60 static void acpi_button_notify_pressed_for_sleep(void *arg); 61 static void acpi_button_notify_pressed_for_wakeup(void *arg); 62 63 static device_method_t acpi_button_methods[] = { 64 /* Device interface */ 65 DEVMETHOD(device_probe, acpi_button_probe), 66 DEVMETHOD(device_attach, acpi_button_attach), 67 DEVMETHOD(device_suspend, acpi_button_suspend), 68 DEVMETHOD(device_resume, acpi_button_resume), 69 70 {0, 0} 71 }; 72 73 static driver_t acpi_button_driver = { 74 "acpi_button", 75 acpi_button_methods, 76 sizeof(struct acpi_button_softc), 77 }; 78 79 static devclass_t acpi_button_devclass; 80 DRIVER_MODULE(acpi_button, acpi, acpi_button_driver, acpi_button_devclass, 0, 0); 81 82 static int 83 acpi_button_probe(device_t dev) 84 { 85 struct acpi_button_softc *sc; 86 87 sc = device_get_softc(dev); 88 if (acpi_get_type(dev) == ACPI_TYPE_DEVICE) { 89 if (!acpi_disabled("button")) { 90 if (acpi_MatchHid(dev, "PNP0C0C")) { 91 device_set_desc(dev, "Power Button"); 92 sc->button_type = ACPI_POWER_BUTTON; 93 return(0); 94 } 95 if (acpi_MatchHid(dev, "PNP0C0E")) { 96 device_set_desc(dev, "Sleep Button"); 97 sc->button_type = ACPI_SLEEP_BUTTON; 98 return(0); 99 } 100 } 101 } 102 return(ENXIO); 103 } 104 105 static int 106 acpi_button_attach(device_t dev) 107 { 108 struct acpi_button_softc *sc; 109 ACPI_STATUS status; 110 111 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 112 113 sc = device_get_softc(dev); 114 sc->button_dev = dev; 115 sc->button_handle = acpi_get_handle(dev); 116 117 if (ACPI_FAILURE(status = AcpiInstallNotifyHandler(sc->button_handle, ACPI_DEVICE_NOTIFY, 118 acpi_button_notify_handler, sc))) { 119 device_printf(sc->button_dev, "couldn't install Notify handler - %s\n", AcpiFormatException(status)); 120 return_VALUE(ENXIO); 121 } 122 acpi_device_enable_wake_capability(sc->button_handle, 1); 123 return_VALUE(0); 124 } 125 126 static int 127 acpi_button_suspend(device_t dev) 128 { 129 struct acpi_button_softc *sc; 130 131 sc = device_get_softc(dev); 132 acpi_device_enable_wake_event(sc->button_handle); 133 return (0); 134 } 135 136 static int 137 acpi_button_resume(device_t dev) 138 { 139 140 return (0); 141 } 142 143 static void 144 acpi_button_notify_pressed_for_sleep(void *arg) 145 { 146 struct acpi_button_softc *sc; 147 struct acpi_softc *acpi_sc; 148 149 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 150 151 sc = (struct acpi_button_softc *)arg; 152 acpi_sc = acpi_device_get_parent_softc(sc->button_dev); 153 if (acpi_sc == NULL) { 154 return_VOID; 155 } 156 157 switch (sc->button_type) { 158 case ACPI_POWER_BUTTON: 159 ACPI_VPRINT(sc->button_dev, acpi_sc, "power button pressed\n"); 160 acpi_eventhandler_power_button_for_sleep((void *)acpi_sc); 161 break; 162 case ACPI_SLEEP_BUTTON: 163 ACPI_VPRINT(sc->button_dev, acpi_sc, "sleep button pressed\n"); 164 acpi_eventhandler_sleep_button_for_sleep((void *)acpi_sc); 165 break; 166 default: 167 break; /* unknown button type */ 168 } 169 return_VOID; 170 } 171 172 static void 173 acpi_button_notify_pressed_for_wakeup(void *arg) 174 { 175 struct acpi_button_softc *sc; 176 struct acpi_softc *acpi_sc; 177 178 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 179 180 sc = (struct acpi_button_softc *)arg; 181 acpi_sc = acpi_device_get_parent_softc(sc->button_dev); 182 if (acpi_sc == NULL) { 183 return_VOID; 184 } 185 186 switch (sc->button_type) { 187 case ACPI_POWER_BUTTON: 188 ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by power button\n"); 189 acpi_eventhandler_power_button_for_wakeup((void *)acpi_sc); 190 break; 191 case ACPI_SLEEP_BUTTON: 192 ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by sleep button\n"); 193 acpi_eventhandler_sleep_button_for_wakeup((void *)acpi_sc); 194 break; 195 default: 196 break; /* unknown button type */ 197 } 198 return_VOID; 199 } 200 201 /* XXX maybe not here */ 202 #define ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP 0x80 203 #define ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP 0x02 204 205 static void 206 acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 207 { 208 struct acpi_button_softc *sc = (struct acpi_button_softc *)context; 209 210 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 211 212 switch (notify) { 213 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP: 214 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_button_notify_pressed_for_sleep, sc); 215 break; 216 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP: 217 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_button_notify_pressed_for_wakeup, sc); 218 break; 219 default: 220 break; /* unknown notification value */ 221 } 222 return_VOID; 223 } 224 225 226