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 * $FreeBSD$ 29 */ 30 31 #include "opt_acpi.h" 32 #include <sys/param.h> 33 #include <sys/kernel.h> 34 #include <sys/bus.h> 35 36 #include "acpi.h" 37 38 #include <dev/acpica/acpivar.h> 39 40 /* 41 * Hooks for the ACPI CA debugging infrastructure 42 */ 43 #define _COMPONENT ACPI_BUTTON 44 ACPI_MODULE_NAME("BUTTON") 45 46 struct acpi_button_softc { 47 device_t button_dev; 48 ACPI_HANDLE button_handle; 49 #define ACPI_POWER_BUTTON 0 50 #define ACPI_SLEEP_BUTTON 1 51 boolean_t button_type; /* Power or Sleep Button */ 52 }; 53 54 static int acpi_button_probe(device_t dev); 55 static int acpi_button_attach(device_t dev); 56 static int acpi_button_suspend(device_t dev); 57 static int acpi_button_resume(device_t dev); 58 static void acpi_button_notify_handler(ACPI_HANDLE h,UINT32 notify, void *context); 59 static void acpi_button_notify_pressed_for_sleep(void *arg); 60 static void acpi_button_notify_pressed_for_wakeup(void *arg); 61 62 static device_method_t acpi_button_methods[] = { 63 /* Device interface */ 64 DEVMETHOD(device_probe, acpi_button_probe), 65 DEVMETHOD(device_attach, acpi_button_attach), 66 DEVMETHOD(device_suspend, acpi_button_suspend), 67 DEVMETHOD(device_resume, acpi_button_resume), 68 69 {0, 0} 70 }; 71 72 static driver_t acpi_button_driver = { 73 "acpi_button", 74 acpi_button_methods, 75 sizeof(struct acpi_button_softc), 76 }; 77 78 static devclass_t acpi_button_devclass; 79 DRIVER_MODULE(acpi_button, acpi, acpi_button_driver, acpi_button_devclass, 0, 0); 80 81 static int 82 acpi_button_probe(device_t dev) 83 { 84 struct acpi_button_softc *sc; 85 86 sc = device_get_softc(dev); 87 if (acpi_get_type(dev) == ACPI_TYPE_DEVICE) { 88 if (!acpi_disabled("button")) { 89 if (acpi_MatchHid(dev, "PNP0C0C")) { 90 device_set_desc(dev, "Power Button"); 91 sc->button_type = ACPI_POWER_BUTTON; 92 return(0); 93 } 94 if (acpi_MatchHid(dev, "PNP0C0E")) { 95 device_set_desc(dev, "Sleep Button"); 96 sc->button_type = ACPI_SLEEP_BUTTON; 97 return(0); 98 } 99 } 100 } 101 return(ENXIO); 102 } 103 104 static int 105 acpi_button_attach(device_t dev) 106 { 107 struct acpi_button_softc *sc; 108 ACPI_STATUS status; 109 110 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 111 112 sc = device_get_softc(dev); 113 sc->button_dev = dev; 114 sc->button_handle = acpi_get_handle(dev); 115 116 if (ACPI_FAILURE(status = AcpiInstallNotifyHandler(sc->button_handle, ACPI_DEVICE_NOTIFY, 117 acpi_button_notify_handler, sc))) { 118 device_printf(sc->button_dev, "couldn't install Notify handler - %s\n", AcpiFormatException(status)); 119 return_VALUE(ENXIO); 120 } 121 acpi_device_enable_wake_capability(sc->button_handle, 1); 122 return_VALUE(0); 123 } 124 125 static int 126 acpi_button_suspend(device_t dev) 127 { 128 struct acpi_button_softc *sc; 129 130 sc = device_get_softc(dev); 131 acpi_device_enable_wake_event(sc->button_handle); 132 return (0); 133 } 134 135 static int 136 acpi_button_resume(device_t dev) 137 { 138 139 return (0); 140 } 141 142 static void 143 acpi_button_notify_pressed_for_sleep(void *arg) 144 { 145 struct acpi_button_softc *sc; 146 struct acpi_softc *acpi_sc; 147 148 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 149 150 sc = (struct acpi_button_softc *)arg; 151 acpi_sc = acpi_device_get_parent_softc(sc->button_dev); 152 if (acpi_sc == NULL) { 153 return_VOID; 154 } 155 156 switch (sc->button_type) { 157 case ACPI_POWER_BUTTON: 158 ACPI_VPRINT(sc->button_dev, acpi_sc, "power button pressed\n"); 159 acpi_eventhandler_power_button_for_sleep((void *)acpi_sc); 160 break; 161 case ACPI_SLEEP_BUTTON: 162 ACPI_VPRINT(sc->button_dev, acpi_sc, "sleep button pressed\n"); 163 acpi_eventhandler_sleep_button_for_sleep((void *)acpi_sc); 164 break; 165 default: 166 break; /* unknown button type */ 167 } 168 return_VOID; 169 } 170 171 static void 172 acpi_button_notify_pressed_for_wakeup(void *arg) 173 { 174 struct acpi_button_softc *sc; 175 struct acpi_softc *acpi_sc; 176 177 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 178 179 sc = (struct acpi_button_softc *)arg; 180 acpi_sc = acpi_device_get_parent_softc(sc->button_dev); 181 if (acpi_sc == NULL) { 182 return_VOID; 183 } 184 185 switch (sc->button_type) { 186 case ACPI_POWER_BUTTON: 187 ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by power button\n"); 188 acpi_eventhandler_power_button_for_wakeup((void *)acpi_sc); 189 break; 190 case ACPI_SLEEP_BUTTON: 191 ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by sleep button\n"); 192 acpi_eventhandler_sleep_button_for_wakeup((void *)acpi_sc); 193 break; 194 default: 195 break; /* unknown button type */ 196 } 197 return_VOID; 198 } 199 200 /* XXX maybe not here */ 201 #define ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP 0x80 202 #define ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP 0x02 203 204 static void 205 acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 206 { 207 struct acpi_button_softc *sc = (struct acpi_button_softc *)context; 208 209 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 210 211 switch (notify) { 212 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP: 213 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_button_notify_pressed_for_sleep, sc); 214 break; 215 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP: 216 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_button_notify_pressed_for_wakeup, sc); 217 break; 218 default: 219 break; /* unknown notification value */ 220 } 221 return_VOID; 222 } 223 224 225