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: stable/11/sys/dev/acpica/acpi_button.c 358884 2020-03-11 08:34:29Z hselasky $"); 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 51ACPI_MODULE_NAME("BUTTON") 52 53struct 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 68static int acpi_button_probe(device_t dev); 69static int acpi_button_attach(device_t dev); 70static int acpi_button_suspend(device_t dev); 71static int acpi_button_resume(device_t dev); 72static void acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify, 73 void *context); 74static ACPI_STATUS 75 acpi_button_fixed_handler(void *context); 76static void acpi_button_notify_sleep(void *arg); 77static void acpi_button_notify_wakeup(void *arg); 78 79static char *btn_ids[] = { 80 "PNP0C0C", "ACPI_FPB", "PNP0C0E", "ACPI_FSB", 81 NULL 82}; 83 84static 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 94static driver_t acpi_button_driver = { 95 "acpi_button", 96 acpi_button_methods, 97 sizeof(struct acpi_button_softc), 98}; 99 100static devclass_t acpi_button_devclass; 101DRIVER_MODULE(acpi_button, acpi, acpi_button_driver, acpi_button_devclass, 102 0, 0); 103MODULE_DEPEND(acpi_button, acpi, 1, 1, 1); 104 105static int 106acpi_button_probe(device_t dev) 107{ 108 struct acpi_button_softc *sc; 109 char *str; 110 111 if (acpi_disabled("button") || 112 (str = ACPI_ID_PROBE(device_get_parent(dev), dev, btn_ids)) == NULL) 113 return (ENXIO); 114 115 sc = device_get_softc(dev); 116 if (strcmp(str, "PNP0C0C") == 0) { 117 device_set_desc(dev, "Power Button"); 118 sc->button_type = ACPI_POWER_BUTTON; 119 } else if (strcmp(str, "ACPI_FPB") == 0) { 120 device_set_desc(dev, "Power Button (fixed)"); 121 sc->button_type = ACPI_POWER_BUTTON; 122 sc->fixed = 1; 123 } else if (strcmp(str, "PNP0C0E") == 0) { 124 device_set_desc(dev, "Sleep Button"); 125 sc->button_type = ACPI_SLEEP_BUTTON; 126 } else if (strcmp(str, "ACPI_FSB") == 0) { 127 device_set_desc(dev, "Sleep Button (fixed)"); 128 sc->button_type = ACPI_SLEEP_BUTTON; 129 sc->fixed = 1; 130 } 131 132 return (0); 133} 134 135static int 136acpi_button_attach(device_t dev) 137{ 138 struct acpi_prw_data prw; 139 struct acpi_button_softc *sc; 140 ACPI_STATUS status; 141 int event; 142 143 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 144 145 sc = device_get_softc(dev); 146 sc->button_dev = dev; 147 sc->button_handle = acpi_get_handle(dev); 148 event = (sc->button_type == ACPI_SLEEP_BUTTON) ? 149 ACPI_EVENT_SLEEP_BUTTON : ACPI_EVENT_POWER_BUTTON; 150 151#ifdef EVDEV_SUPPORT 152 sc->button_evdev = evdev_alloc(); 153 evdev_set_name(sc->button_evdev, device_get_desc(dev)); 154 evdev_set_phys(sc->button_evdev, device_get_nameunit(dev)); 155 evdev_set_id(sc->button_evdev, BUS_HOST, 0, 0, 1); 156 evdev_support_event(sc->button_evdev, EV_SYN); 157 evdev_support_event(sc->button_evdev, EV_KEY); 158 evdev_support_key(sc->button_evdev, 159 (sc->button_type == ACPI_SLEEP_BUTTON) ? KEY_SLEEP : KEY_POWER); 160 161 if (evdev_register(sc->button_evdev)) 162 return (ENXIO); 163#endif 164 165 /* 166 * Install the new handler. We could remove any fixed handlers added 167 * from the FADT once we have a duplicate from the AML but some systems 168 * only return events on one or the other so we have to keep both. 169 */ 170 if (sc->fixed) { 171 AcpiClearEvent(event); 172 status = AcpiInstallFixedEventHandler(event, 173 acpi_button_fixed_handler, sc); 174 } else { 175 /* 176 * If a system does not get lid events, it may make sense to change 177 * the type to ACPI_ALL_NOTIFY. Some systems generate both a wake 178 * and runtime notify in that case though. 179 */ 180 status = AcpiInstallNotifyHandler(sc->button_handle, 181 ACPI_DEVICE_NOTIFY, acpi_button_notify_handler, sc); 182 } 183 if (ACPI_FAILURE(status)) { 184 device_printf(sc->button_dev, "couldn't install notify handler - %s\n", 185 AcpiFormatException(status)); 186 return_VALUE (ENXIO); 187 } 188 189 /* Enable the GPE for wake/runtime. */ 190 acpi_wake_set_enable(dev, 1); 191 if (acpi_parse_prw(sc->button_handle, &prw) == 0) 192 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit); 193 194 return_VALUE (0); 195} 196 197static int 198acpi_button_suspend(device_t dev) 199{ 200 return (0); 201} 202 203static int 204acpi_button_resume(device_t dev) 205{ 206 return (0); 207} 208 209static void 210acpi_button_notify_sleep(void *arg) 211{ 212 struct acpi_button_softc *sc; 213 struct acpi_softc *acpi_sc; 214 215 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 216 217 sc = (struct acpi_button_softc *)arg; 218 acpi_sc = acpi_device_get_parent_softc(sc->button_dev); 219 if (acpi_sc == NULL) 220 return_VOID; 221 222 acpi_UserNotify("Button", sc->button_handle, sc->button_type); 223 224 switch (sc->button_type) { 225 case ACPI_POWER_BUTTON: 226 ACPI_VPRINT(sc->button_dev, acpi_sc, "power button pressed\n"); 227 acpi_event_power_button_sleep(acpi_sc); 228 break; 229 case ACPI_SLEEP_BUTTON: 230 ACPI_VPRINT(sc->button_dev, acpi_sc, "sleep button pressed\n"); 231 acpi_event_sleep_button_sleep(acpi_sc); 232 break; 233 default: 234 break; /* unknown button type */ 235 } 236} 237 238static void 239acpi_button_notify_wakeup(void *arg) 240{ 241 struct acpi_button_softc *sc; 242 struct acpi_softc *acpi_sc; 243 244 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 245 246 sc = (struct acpi_button_softc *)arg; 247 acpi_sc = acpi_device_get_parent_softc(sc->button_dev); 248 if (acpi_sc == NULL) 249 return_VOID; 250 251 acpi_UserNotify("Button", sc->button_handle, sc->button_type); 252 253 switch (sc->button_type) { 254 case ACPI_POWER_BUTTON: 255 ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by power button\n"); 256 acpi_event_power_button_wake(acpi_sc); 257 break; 258 case ACPI_SLEEP_BUTTON: 259 ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by sleep button\n"); 260 acpi_event_sleep_button_wake(acpi_sc); 261 break; 262 default: 263 break; /* unknown button type */ 264 } 265} 266 267static void 268acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 269{ 270 struct acpi_button_softc *sc; 271#ifdef EVDEV_SUPPORT 272 uint16_t key; 273#endif 274 275 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 276 277 sc = (struct acpi_button_softc *)context; 278 switch (notify) { 279 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP: 280 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_button_notify_sleep, sc); 281 break; 282 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP: 283 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_button_notify_wakeup, sc); 284 break; 285 default: 286 device_printf(sc->button_dev, "unknown notify %#x\n", notify); 287 break; 288 } 289 290#ifdef EVDEV_SUPPORT 291 key = (sc->button_type == ACPI_SLEEP_BUTTON) ? KEY_SLEEP : KEY_POWER; 292 evdev_push_key(sc->button_evdev, key, 1); 293 evdev_sync(sc->button_evdev); 294 evdev_push_key(sc->button_evdev, key, 0); 295 evdev_sync(sc->button_evdev); 296#endif 297} 298 299static ACPI_STATUS 300acpi_button_fixed_handler(void *context) 301{ 302 struct acpi_button_softc *sc = (struct acpi_button_softc *)context; 303 304 ACPI_FUNCTION_TRACE_PTR((char *)(uintptr_t)__func__, context); 305 306 if (context == NULL) 307 return_ACPI_STATUS (AE_BAD_PARAMETER); 308 309 acpi_button_notify_handler(sc->button_handle, 310 ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP, sc); 311 return_ACPI_STATUS (AE_OK); 312} 313