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 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 void acpi_button_notify_handler(ACPI_HANDLE h,UINT32 notify, void *context); 57 static void acpi_button_notify_pressed_for_sleep(void *arg); 58 static void acpi_button_notify_pressed_for_wakeup(void *arg); 59 60 static device_method_t acpi_button_methods[] = { 61 /* Device interface */ 62 DEVMETHOD(device_probe, acpi_button_probe), 63 DEVMETHOD(device_attach, acpi_button_attach), 64 65 {0, 0} 66 }; 67 68 static driver_t acpi_button_driver = { 69 "acpi_button", 70 acpi_button_methods, 71 sizeof(struct acpi_button_softc), 72 }; 73 74 static devclass_t acpi_button_devclass; 75 DRIVER_MODULE(acpi_button, acpi, acpi_button_driver, acpi_button_devclass, 0, 0); 76 77 static int 78 acpi_button_probe(device_t dev) 79 { 80 struct acpi_button_softc *sc; 81 82 sc = device_get_softc(dev); 83 if (acpi_get_type(dev) == ACPI_TYPE_DEVICE) { 84 if (!acpi_disabled("button")) { 85 if (acpi_MatchHid(dev, "PNP0C0C")) { 86 device_set_desc(dev, "Power Button"); 87 sc->button_type = ACPI_POWER_BUTTON; 88 return(0); 89 } 90 if (acpi_MatchHid(dev, "PNP0C0E")) { 91 device_set_desc(dev, "Sleep Button"); 92 sc->button_type = ACPI_SLEEP_BUTTON; 93 return(0); 94 } 95 } 96 } 97 return(ENXIO); 98 } 99 100 static int 101 acpi_button_attach(device_t dev) 102 { 103 struct acpi_button_softc *sc; 104 ACPI_STATUS status; 105 106 FUNCTION_TRACE(__func__); 107 108 sc = device_get_softc(dev); 109 sc->button_dev = dev; 110 sc->button_handle = acpi_get_handle(dev); 111 112 if ((status = AcpiInstallNotifyHandler(sc->button_handle, ACPI_DEVICE_NOTIFY, 113 acpi_button_notify_handler, sc)) != AE_OK) { 114 device_printf(sc->button_dev, "couldn't install Notify handler - %s\n", AcpiFormatException(status)); 115 return_VALUE(ENXIO); 116 } 117 return_VALUE(0); 118 } 119 120 static void 121 acpi_button_notify_pressed_for_sleep(void *arg) 122 { 123 struct acpi_button_softc *sc; 124 struct acpi_softc *acpi_sc; 125 126 FUNCTION_TRACE(__func__); 127 128 sc = (struct acpi_button_softc *)arg; 129 acpi_sc = acpi_device_get_parent_softc(sc->button_dev); 130 if (acpi_sc == NULL) { 131 return_VOID; 132 } 133 134 switch (sc->button_type) { 135 case ACPI_POWER_BUTTON: 136 ACPI_VPRINT(sc->button_dev, acpi_sc, 137 "power button pressed\n", sc->button_type); 138 acpi_eventhandler_power_button_for_sleep((void *)acpi_sc); 139 break; 140 case ACPI_SLEEP_BUTTON: 141 ACPI_VPRINT(sc->button_dev, acpi_sc, 142 "sleep button pressed\n", sc->button_type); 143 acpi_eventhandler_sleep_button_for_sleep((void *)acpi_sc); 144 break; 145 default: 146 break; /* unknown button type */ 147 } 148 return_VOID; 149 } 150 151 static void 152 acpi_button_notify_pressed_for_wakeup(void *arg) 153 { 154 struct acpi_button_softc *sc; 155 struct acpi_softc *acpi_sc; 156 157 FUNCTION_TRACE(__func__); 158 159 sc = (struct acpi_button_softc *)arg; 160 acpi_sc = acpi_device_get_parent_softc(sc->button_dev); 161 if (acpi_sc == NULL) { 162 return_VOID; 163 } 164 165 switch (sc->button_type) { 166 case ACPI_POWER_BUTTON: 167 ACPI_VPRINT(sc->button_dev, acpi_sc, 168 "wakeup by power button\n", sc->button_type); 169 acpi_eventhandler_power_button_for_wakeup((void *)acpi_sc); 170 break; 171 case ACPI_SLEEP_BUTTON: 172 ACPI_VPRINT(sc->button_dev, acpi_sc, 173 "wakeup by sleep button\n", sc->button_type); 174 acpi_eventhandler_sleep_button_for_wakeup((void *)acpi_sc); 175 break; 176 default: 177 break; /* unknown button type */ 178 } 179 return_VOID; 180 } 181 182 /* XXX maybe not here */ 183 #define ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP 0x80 184 #define ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP 0x02 185 186 static void 187 acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 188 { 189 struct acpi_button_softc *sc = (struct acpi_button_softc *)context; 190 191 FUNCTION_TRACE_U32(__func__, notify); 192 193 switch (notify) { 194 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP: 195 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_button_notify_pressed_for_sleep, sc); 196 break; 197 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP: 198 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_button_notify_pressed_for_wakeup, sc); 199 break; 200 default: 201 break; /* unknown notification value */ 202 } 203 return_VOID; 204 } 205 206 207