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 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include "opt_acpi.h" 33 #include "opt_evdev.h" 34 #include <sys/param.h> 35 #include <sys/kernel.h> 36 #include <sys/module.h> 37 #include <sys/bus.h> 38 39 #include <contrib/dev/acpica/include/acpi.h> 40 #include <contrib/dev/acpica/include/accommon.h> 41 42 #include <dev/acpica/acpivar.h> 43 44 #ifdef EVDEV_SUPPORT 45 #include <dev/evdev/input.h> 46 #include <dev/evdev/evdev.h> 47 #endif 48 49 /* Hooks for the ACPI CA debugging infrastructure */ 50 #define _COMPONENT ACPI_BUTTON 51 ACPI_MODULE_NAME("BUTTON") 52 53 struct acpi_button_softc { 54 device_t button_dev; 55 ACPI_HANDLE button_handle; 56 boolean_t button_type; 57 #define ACPI_POWER_BUTTON 0 58 #define ACPI_SLEEP_BUTTON 1 59 boolean_t fixed; 60 #ifdef EVDEV_SUPPORT 61 struct evdev_dev *button_evdev; 62 #endif 63 }; 64 65 #define ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP 0x80 66 #define ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP 0x02 67 68 static int acpi_button_probe(device_t dev); 69 static int acpi_button_attach(device_t dev); 70 static int acpi_button_suspend(device_t dev); 71 static int acpi_button_resume(device_t dev); 72 static void acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify, 73 void *context); 74 static ACPI_STATUS 75 acpi_button_fixed_handler(void *context); 76 static void acpi_button_notify_sleep(void *arg); 77 static void acpi_button_notify_wakeup(void *arg); 78 79 static char *btn_ids[] = { 80 "PNP0C0C", "ACPI_FPB", "PNP0C0E", "ACPI_FSB", 81 NULL 82 }; 83 84 static device_method_t acpi_button_methods[] = { 85 /* Device interface */ 86 DEVMETHOD(device_probe, acpi_button_probe), 87 DEVMETHOD(device_attach, acpi_button_attach), 88 DEVMETHOD(device_suspend, acpi_button_suspend), 89 DEVMETHOD(device_shutdown, acpi_button_suspend), 90 DEVMETHOD(device_resume, acpi_button_resume), 91 DEVMETHOD_END 92 }; 93 94 static driver_t acpi_button_driver = { 95 "acpi_button", 96 acpi_button_methods, 97 sizeof(struct acpi_button_softc), 98 }; 99 100 static devclass_t acpi_button_devclass; 101 DRIVER_MODULE(acpi_button, acpi, acpi_button_driver, acpi_button_devclass, 102 0, 0); 103 MODULE_DEPEND(acpi_button, acpi, 1, 1, 1); 104 105 static int 106 acpi_button_probe(device_t dev) 107 { 108 struct acpi_button_softc *sc; 109 char *str; 110 int rv; 111 112 if (acpi_disabled("button")) 113 return (ENXIO); 114 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, btn_ids, &str); 115 if (rv > 0) 116 return (ENXIO); 117 118 sc = device_get_softc(dev); 119 if (strcmp(str, "PNP0C0C") == 0) { 120 device_set_desc(dev, "Power Button"); 121 sc->button_type = ACPI_POWER_BUTTON; 122 } else if (strcmp(str, "ACPI_FPB") == 0) { 123 device_set_desc(dev, "Power Button (fixed)"); 124 sc->button_type = ACPI_POWER_BUTTON; 125 sc->fixed = 1; 126 } else if (strcmp(str, "PNP0C0E") == 0) { 127 device_set_desc(dev, "Sleep Button"); 128 sc->button_type = ACPI_SLEEP_BUTTON; 129 } else if (strcmp(str, "ACPI_FSB") == 0) { 130 device_set_desc(dev, "Sleep Button (fixed)"); 131 sc->button_type = ACPI_SLEEP_BUTTON; 132 sc->fixed = 1; 133 } 134 135 return (rv); 136 } 137 138 static int 139 acpi_button_attach(device_t dev) 140 { 141 struct acpi_prw_data prw; 142 struct acpi_button_softc *sc; 143 ACPI_STATUS status; 144 int event; 145 146 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 147 148 sc = device_get_softc(dev); 149 sc->button_dev = dev; 150 sc->button_handle = acpi_get_handle(dev); 151 event = (sc->button_type == ACPI_SLEEP_BUTTON) ? 152 ACPI_EVENT_SLEEP_BUTTON : ACPI_EVENT_POWER_BUTTON; 153 154 #ifdef EVDEV_SUPPORT 155 sc->button_evdev = evdev_alloc(); 156 evdev_set_name(sc->button_evdev, device_get_desc(dev)); 157 evdev_set_phys(sc->button_evdev, device_get_nameunit(dev)); 158 evdev_set_id(sc->button_evdev, BUS_HOST, 0, 0, 1); 159 evdev_support_event(sc->button_evdev, EV_SYN); 160 evdev_support_event(sc->button_evdev, EV_KEY); 161 evdev_support_key(sc->button_evdev, 162 (sc->button_type == ACPI_SLEEP_BUTTON) ? KEY_SLEEP : KEY_POWER); 163 164 if (evdev_register(sc->button_evdev)) 165 return (ENXIO); 166 #endif 167 168 /* 169 * Install the new handler. We could remove any fixed handlers added 170 * from the FADT once we have a duplicate from the AML but some systems 171 * only return events on one or the other so we have to keep both. 172 */ 173 if (sc->fixed) { 174 AcpiClearEvent(event); 175 status = AcpiInstallFixedEventHandler(event, 176 acpi_button_fixed_handler, sc); 177 } else { 178 /* 179 * If a system does not get lid events, it may make sense to change 180 * the type to ACPI_ALL_NOTIFY. Some systems generate both a wake 181 * and runtime notify in that case though. 182 */ 183 status = AcpiInstallNotifyHandler(sc->button_handle, 184 ACPI_DEVICE_NOTIFY, acpi_button_notify_handler, sc); 185 } 186 if (ACPI_FAILURE(status)) { 187 device_printf(sc->button_dev, "couldn't install notify handler - %s\n", 188 AcpiFormatException(status)); 189 return_VALUE (ENXIO); 190 } 191 192 /* Enable the GPE for wake/runtime. */ 193 acpi_wake_set_enable(dev, 1); 194 if (acpi_parse_prw(sc->button_handle, &prw) == 0) 195 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit); 196 197 return_VALUE (0); 198 } 199 200 static int 201 acpi_button_suspend(device_t dev) 202 { 203 return (0); 204 } 205 206 static int 207 acpi_button_resume(device_t dev) 208 { 209 return (0); 210 } 211 212 static void 213 acpi_button_notify_sleep(void *arg) 214 { 215 struct acpi_button_softc *sc; 216 struct acpi_softc *acpi_sc; 217 218 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 219 220 sc = (struct acpi_button_softc *)arg; 221 acpi_sc = acpi_device_get_parent_softc(sc->button_dev); 222 if (acpi_sc == NULL) 223 return_VOID; 224 225 acpi_UserNotify("Button", sc->button_handle, sc->button_type); 226 227 switch (sc->button_type) { 228 case ACPI_POWER_BUTTON: 229 ACPI_VPRINT(sc->button_dev, acpi_sc, "power button pressed\n"); 230 acpi_event_power_button_sleep(acpi_sc); 231 break; 232 case ACPI_SLEEP_BUTTON: 233 ACPI_VPRINT(sc->button_dev, acpi_sc, "sleep button pressed\n"); 234 acpi_event_sleep_button_sleep(acpi_sc); 235 break; 236 default: 237 break; /* unknown button type */ 238 } 239 } 240 241 static void 242 acpi_button_notify_wakeup(void *arg) 243 { 244 struct acpi_button_softc *sc; 245 struct acpi_softc *acpi_sc; 246 247 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 248 249 sc = (struct acpi_button_softc *)arg; 250 acpi_sc = acpi_device_get_parent_softc(sc->button_dev); 251 if (acpi_sc == NULL) 252 return_VOID; 253 254 acpi_UserNotify("Button", sc->button_handle, sc->button_type); 255 256 switch (sc->button_type) { 257 case ACPI_POWER_BUTTON: 258 ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by power button\n"); 259 acpi_event_power_button_wake(acpi_sc); 260 break; 261 case ACPI_SLEEP_BUTTON: 262 ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by sleep button\n"); 263 acpi_event_sleep_button_wake(acpi_sc); 264 break; 265 default: 266 break; /* unknown button type */ 267 } 268 } 269 270 static void 271 acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 272 { 273 struct acpi_button_softc *sc; 274 #ifdef EVDEV_SUPPORT 275 uint16_t key; 276 #endif 277 278 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 279 280 sc = (struct acpi_button_softc *)context; 281 switch (notify) { 282 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP: 283 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_button_notify_sleep, sc); 284 break; 285 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP: 286 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_button_notify_wakeup, sc); 287 break; 288 default: 289 device_printf(sc->button_dev, "unknown notify %#x\n", notify); 290 break; 291 } 292 293 #ifdef EVDEV_SUPPORT 294 key = (sc->button_type == ACPI_SLEEP_BUTTON) ? KEY_SLEEP : KEY_POWER; 295 evdev_push_key(sc->button_evdev, key, 1); 296 evdev_sync(sc->button_evdev); 297 evdev_push_key(sc->button_evdev, key, 0); 298 evdev_sync(sc->button_evdev); 299 #endif 300 } 301 302 static ACPI_STATUS 303 acpi_button_fixed_handler(void *context) 304 { 305 struct acpi_button_softc *sc = (struct acpi_button_softc *)context; 306 307 ACPI_FUNCTION_TRACE_PTR((char *)(uintptr_t)__func__, context); 308 309 if (context == NULL) 310 return_ACPI_STATUS (AE_BAD_PARAMETER); 311 312 acpi_button_notify_handler(sc->button_handle, 313 ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP, sc); 314 return_ACPI_STATUS (AE_OK); 315 } 316