1 /*- 2 * Copyright (c) 2012 Alexander Motin <mav@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include "opt_acpi.h" 31 #include <sys/param.h> 32 #include <sys/conf.h> 33 #include <sys/uio.h> 34 #include <sys/proc.h> 35 #include <sys/kernel.h> 36 #include <sys/bus.h> 37 #include <sys/sbuf.h> 38 #include <sys/module.h> 39 #include <sys/sysctl.h> 40 41 #include <contrib/dev/acpica/include/acpi.h> 42 #include <contrib/dev/acpica/include/accommon.h> 43 #include <dev/acpica/acpivar.h> 44 #include "acpi_wmi_if.h" 45 46 #define _COMPONENT ACPI_OEM 47 ACPI_MODULE_NAME("ASUS-WMI") 48 49 #define ACPI_ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66" 50 #define ACPI_ASUS_WMI_EVENT_GUID "0B3CBB35-E3C2-45ED-91C2-4C5A6D195D1C" 51 #define ACPI_EEEPC_WMI_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000" 52 53 /* WMI Methods */ 54 #define ASUS_WMI_METHODID_SPEC 0x43455053 55 #define ASUS_WMI_METHODID_SFUN 0x4E554653 56 #define ASUS_WMI_METHODID_DSTS 0x53544344 57 #define ASUS_WMI_METHODID_DSTS2 0x53545344 58 #define ASUS_WMI_METHODID_DEVS 0x53564544 59 #define ASUS_WMI_METHODID_INIT 0x54494E49 60 #define ASUS_WMI_METHODID_HKEY 0x59454B48 61 62 #define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE 63 64 /* Wireless */ 65 #define ASUS_WMI_DEVID_HW_SWITCH 0x00010001 66 #define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002 67 #define ASUS_WMI_DEVID_CWAP 0x00010003 68 #define ASUS_WMI_DEVID_WLAN 0x00010011 69 #define ASUS_WMI_DEVID_BLUETOOTH 0x00010013 70 #define ASUS_WMI_DEVID_GPS 0x00010015 71 #define ASUS_WMI_DEVID_WIMAX 0x00010017 72 #define ASUS_WMI_DEVID_WWAN3G 0x00010019 73 #define ASUS_WMI_DEVID_UWB 0x00010021 74 75 /* LEDs */ 76 #define ASUS_WMI_DEVID_LED1 0x00020011 77 #define ASUS_WMI_DEVID_LED2 0x00020012 78 #define ASUS_WMI_DEVID_LED3 0x00020013 79 #define ASUS_WMI_DEVID_LED4 0x00020014 80 #define ASUS_WMI_DEVID_LED5 0x00020015 81 #define ASUS_WMI_DEVID_LED6 0x00020016 82 83 /* Backlight and Brightness */ 84 #define ASUS_WMI_DEVID_BACKLIGHT 0x00050011 85 #define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012 86 #define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021 87 #define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 88 89 /* Misc */ 90 #define ASUS_WMI_DEVID_CAMERA 0x00060013 91 #define ASUS_WMI_DEVID_CARDREADER 0x00080013 92 #define ASUS_WMI_DEVID_TOUCHPAD 0x00100011 93 #define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012 94 #define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011 95 #define ASUS_WMI_DEVID_FAN_CTRL 0x00110012 96 #define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012 97 98 /* DSTS masks */ 99 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001 100 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002 101 #define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000 102 #define ASUS_WMI_DSTS_USER_BIT 0x00020000 103 #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000 104 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF 105 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00 106 107 108 struct acpi_asus_wmi_softc { 109 device_t dev; 110 device_t wmi_dev; 111 const char *notify_guid; 112 struct sysctl_ctx_list *sysctl_ctx; 113 struct sysctl_oid *sysctl_tree; 114 int dsts_id; 115 int handle_keys; 116 }; 117 118 static struct { 119 char *name; 120 int dev_id; 121 char *description; 122 int flag_rdonly; 123 } acpi_asus_wmi_sysctls[] = { 124 { 125 .name = "hw_switch", 126 .dev_id = ASUS_WMI_DEVID_HW_SWITCH, 127 .description = "hw_switch", 128 }, 129 { 130 .name = "wireless_led", 131 .dev_id = ASUS_WMI_DEVID_WIRELESS_LED, 132 .description = "Wireless LED control", 133 }, 134 { 135 .name = "cwap", 136 .dev_id = ASUS_WMI_DEVID_CWAP, 137 .description = "Alt+F2 function", 138 }, 139 { 140 .name = "wlan", 141 .dev_id = ASUS_WMI_DEVID_WLAN, 142 .description = "WLAN power control", 143 }, 144 { 145 .name = "bluetooth", 146 .dev_id = ASUS_WMI_DEVID_BLUETOOTH, 147 .description = "Bluetooth power control", 148 }, 149 { 150 .name = "gps", 151 .dev_id = ASUS_WMI_DEVID_GPS, 152 .description = "GPS power control", 153 }, 154 { 155 .name = "wimax", 156 .dev_id = ASUS_WMI_DEVID_WIMAX, 157 .description = "WiMAX power control", 158 }, 159 { 160 .name = "wwan3g", 161 .dev_id = ASUS_WMI_DEVID_WWAN3G, 162 .description = "WWAN-3G power control", 163 }, 164 { 165 .name = "uwb", 166 .dev_id = ASUS_WMI_DEVID_UWB, 167 .description = "UWB power control", 168 }, 169 { 170 .name = "led1", 171 .dev_id = ASUS_WMI_DEVID_LED1, 172 .description = "LED1 control", 173 }, 174 { 175 .name = "led2", 176 .dev_id = ASUS_WMI_DEVID_LED2, 177 .description = "LED2 control", 178 }, 179 { 180 .name = "led3", 181 .dev_id = ASUS_WMI_DEVID_LED3, 182 .description = "LED3 control", 183 }, 184 { 185 .name = "led4", 186 .dev_id = ASUS_WMI_DEVID_LED4, 187 .description = "LED4 control", 188 }, 189 { 190 .name = "led5", 191 .dev_id = ASUS_WMI_DEVID_LED5, 192 .description = "LED5 control", 193 }, 194 { 195 .name = "led6", 196 .dev_id = ASUS_WMI_DEVID_LED6, 197 .description = "LED6 control", 198 }, 199 { 200 .name = "backlight", 201 .dev_id = ASUS_WMI_DEVID_BACKLIGHT, 202 .description = "LCD backlight on/off control", 203 }, 204 { 205 .name = "brightness", 206 .dev_id = ASUS_WMI_DEVID_BRIGHTNESS, 207 .description = "LCD backlight brightness control", 208 }, 209 { 210 .name = "kbd_backlight", 211 .dev_id = ASUS_WMI_DEVID_KBD_BACKLIGHT, 212 .description = "Keyboard backlight brightness control", 213 }, 214 { 215 .name = "light_sensor", 216 .dev_id = ASUS_WMI_DEVID_LIGHT_SENSOR, 217 .description = "Ambient light sensor", 218 }, 219 { 220 .name = "camera", 221 .dev_id = ASUS_WMI_DEVID_CAMERA, 222 .description = "Camera power control", 223 }, 224 { 225 .name = "cardreader", 226 .dev_id = ASUS_WMI_DEVID_CARDREADER, 227 .description = "Cardreader power control", 228 }, 229 { 230 .name = "touchpad", 231 .dev_id = ASUS_WMI_DEVID_TOUCHPAD, 232 .description = "Touchpad control", 233 }, 234 { 235 .name = "touchpad_led", 236 .dev_id = ASUS_WMI_DEVID_TOUCHPAD_LED, 237 .description = "Touchpad LED control", 238 }, 239 { 240 .name = "themperature", 241 .dev_id = ASUS_WMI_DEVID_THERMAL_CTRL, 242 .description = "Temperature (C)", 243 .flag_rdonly = 1 244 }, 245 { 246 .name = "fan_speed", 247 .dev_id = ASUS_WMI_DEVID_FAN_CTRL, 248 .description = "Fan speed (0-3)", 249 .flag_rdonly = 1 250 }, 251 { 252 .name = "processor_state", 253 .dev_id = ASUS_WMI_DEVID_PROCESSOR_STATE, 254 .flag_rdonly = 1 255 }, 256 { NULL, 0, NULL, 0 } 257 }; 258 259 ACPI_SERIAL_DECL(asus_wmi, "ASUS WMI device"); 260 261 static void acpi_asus_wmi_identify(driver_t *driver, device_t parent); 262 static int acpi_asus_wmi_probe(device_t dev); 263 static int acpi_asus_wmi_attach(device_t dev); 264 static int acpi_asus_wmi_detach(device_t dev); 265 266 static int acpi_asus_wmi_sysctl(SYSCTL_HANDLER_ARGS); 267 static int acpi_asus_wmi_sysctl_set(struct acpi_asus_wmi_softc *sc, int dev_id, 268 int arg, int oldarg); 269 static int acpi_asus_wmi_sysctl_get(struct acpi_asus_wmi_softc *sc, int dev_id); 270 static int acpi_asus_wmi_evaluate_method(device_t wmi_dev, int method, 271 UINT32 arg0, UINT32 arg1, UINT32 *retval); 272 static int acpi_wpi_asus_get_devstate(struct acpi_asus_wmi_softc *sc, 273 UINT32 dev_id, UINT32 *retval); 274 static int acpi_wpi_asus_set_devstate(struct acpi_asus_wmi_softc *sc, 275 UINT32 dev_id, UINT32 ctrl_param, UINT32 *retval); 276 static void acpi_asus_wmi_notify(ACPI_HANDLE h, UINT32 notify, void *context); 277 278 static device_method_t acpi_asus_wmi_methods[] = { 279 DEVMETHOD(device_identify, acpi_asus_wmi_identify), 280 DEVMETHOD(device_probe, acpi_asus_wmi_probe), 281 DEVMETHOD(device_attach, acpi_asus_wmi_attach), 282 DEVMETHOD(device_detach, acpi_asus_wmi_detach), 283 284 DEVMETHOD_END 285 }; 286 287 static driver_t acpi_asus_wmi_driver = { 288 "acpi_asus_wmi", 289 acpi_asus_wmi_methods, 290 sizeof(struct acpi_asus_wmi_softc), 291 }; 292 293 static devclass_t acpi_asus_wmi_devclass; 294 295 DRIVER_MODULE(acpi_asus_wmi, acpi_wmi, acpi_asus_wmi_driver, 296 acpi_asus_wmi_devclass, 0, 0); 297 MODULE_DEPEND(acpi_asus_wmi, acpi_wmi, 1, 1, 1); 298 MODULE_DEPEND(acpi_asus_wmi, acpi, 1, 1, 1); 299 300 static void 301 acpi_asus_wmi_identify(driver_t *driver, device_t parent) 302 { 303 304 /* Don't do anything if driver is disabled. */ 305 if (acpi_disabled("asus_wmi")) 306 return; 307 308 /* Add only a single device instance. */ 309 if (device_find_child(parent, "acpi_asus_wmi", -1) != NULL) 310 return; 311 312 /* Check management GUID to see whether system is compatible. */ 313 if (!ACPI_WMI_PROVIDES_GUID_STRING(parent, 314 ACPI_ASUS_WMI_MGMT_GUID)) 315 return; 316 317 if (BUS_ADD_CHILD(parent, 0, "acpi_asus_wmi", -1) == NULL) 318 device_printf(parent, "add acpi_asus_wmi child failed\n"); 319 } 320 321 static int 322 acpi_asus_wmi_probe(device_t dev) 323 { 324 325 if (!ACPI_WMI_PROVIDES_GUID_STRING(device_get_parent(dev), 326 ACPI_ASUS_WMI_MGMT_GUID)) 327 return (EINVAL); 328 device_set_desc(dev, "ASUS WMI device"); 329 return (0); 330 } 331 332 static int 333 acpi_asus_wmi_attach(device_t dev) 334 { 335 struct acpi_asus_wmi_softc *sc; 336 UINT32 val; 337 int dev_id, i; 338 339 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 340 341 sc = device_get_softc(dev); 342 sc->dev = dev; 343 sc->wmi_dev = device_get_parent(dev); 344 sc->handle_keys = 1; 345 346 /* Check management GUID. */ 347 if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 348 ACPI_ASUS_WMI_MGMT_GUID)) { 349 device_printf(dev, 350 "WMI device does not provide the ASUS management GUID\n"); 351 return (EINVAL); 352 } 353 354 /* Find proper DSTS method. */ 355 sc->dsts_id = ASUS_WMI_METHODID_DSTS; 356 next: 357 for (i = 0; acpi_asus_wmi_sysctls[i].name != NULL; ++i) { 358 dev_id = acpi_asus_wmi_sysctls[i].dev_id; 359 if (acpi_wpi_asus_get_devstate(sc, dev_id, &val)) 360 continue; 361 break; 362 } 363 if (acpi_asus_wmi_sysctls[i].name == NULL) { 364 if (sc->dsts_id == ASUS_WMI_METHODID_DSTS) { 365 sc->dsts_id = ASUS_WMI_METHODID_DSTS2; 366 goto next; 367 } else { 368 device_printf(dev, "Can not detect DSTS method ID\n"); 369 return (EINVAL); 370 } 371 } 372 373 /* Find proper and attach to notufy GUID. */ 374 if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 375 ACPI_ASUS_WMI_EVENT_GUID)) 376 sc->notify_guid = ACPI_ASUS_WMI_EVENT_GUID; 377 else if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 378 ACPI_EEEPC_WMI_EVENT_GUID)) 379 sc->notify_guid = ACPI_EEEPC_WMI_EVENT_GUID; 380 else 381 sc->notify_guid = NULL; 382 if (sc->notify_guid != NULL) { 383 if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev, 384 sc->notify_guid, acpi_asus_wmi_notify, dev)) 385 sc->notify_guid = NULL; 386 } 387 if (sc->notify_guid == NULL) 388 device_printf(dev, "Could not install event handler!\n"); 389 390 /* Initialize. */ 391 if (!acpi_asus_wmi_evaluate_method(sc->wmi_dev, 392 ASUS_WMI_METHODID_INIT, 0, 0, &val) && bootverbose) 393 device_printf(dev, "Initialization: %#x\n", val); 394 if (!acpi_asus_wmi_evaluate_method(sc->wmi_dev, 395 ASUS_WMI_METHODID_SPEC, 0, 0x9, &val) && bootverbose) 396 device_printf(dev, "WMI BIOS version: %d.%d\n", 397 val >> 16, val & 0xFF); 398 if (!acpi_asus_wmi_evaluate_method(sc->wmi_dev, 399 ASUS_WMI_METHODID_SFUN, 0, 0, &val) && bootverbose) 400 device_printf(dev, "SFUN value: %#x\n", val); 401 402 ACPI_SERIAL_BEGIN(asus_wmi); 403 404 sc->sysctl_ctx = device_get_sysctl_ctx(dev); 405 sc->sysctl_tree = device_get_sysctl_tree(dev); 406 SYSCTL_ADD_INT(sc->sysctl_ctx, 407 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 408 "handle_keys", CTLFLAG_RW, &sc->handle_keys, 409 0, "Handle some hardware keys inside the driver"); 410 for (i = 0; acpi_asus_wmi_sysctls[i].name != NULL; ++i) { 411 dev_id = acpi_asus_wmi_sysctls[i].dev_id; 412 if (acpi_wpi_asus_get_devstate(sc, dev_id, &val)) 413 continue; 414 switch (dev_id) { 415 case ASUS_WMI_DEVID_THERMAL_CTRL: 416 case ASUS_WMI_DEVID_PROCESSOR_STATE: 417 case ASUS_WMI_DEVID_FAN_CTRL: 418 case ASUS_WMI_DEVID_BRIGHTNESS: 419 if (val == 0) 420 continue; 421 break; 422 default: 423 if ((val & ASUS_WMI_DSTS_PRESENCE_BIT) == 0) 424 continue; 425 break; 426 } 427 428 if (acpi_asus_wmi_sysctls[i].flag_rdonly != 0) { 429 SYSCTL_ADD_PROC(sc->sysctl_ctx, 430 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 431 acpi_asus_wmi_sysctls[i].name, 432 CTLTYPE_INT | CTLFLAG_RD, 433 sc, i, acpi_asus_wmi_sysctl, "I", 434 acpi_asus_wmi_sysctls[i].description); 435 } else { 436 SYSCTL_ADD_PROC(sc->sysctl_ctx, 437 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 438 acpi_asus_wmi_sysctls[i].name, 439 CTLTYPE_INT | CTLFLAG_RW, 440 sc, i, acpi_asus_wmi_sysctl, "I", 441 acpi_asus_wmi_sysctls[i].description); 442 } 443 } 444 ACPI_SERIAL_END(asus_wmi); 445 446 return (0); 447 } 448 449 static int 450 acpi_asus_wmi_detach(device_t dev) 451 { 452 struct acpi_asus_wmi_softc *sc = device_get_softc(dev); 453 454 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 455 456 if (sc->notify_guid) 457 ACPI_WMI_REMOVE_EVENT_HANDLER(dev, sc->notify_guid); 458 459 return (0); 460 } 461 462 static int 463 acpi_asus_wmi_sysctl(SYSCTL_HANDLER_ARGS) 464 { 465 struct acpi_asus_wmi_softc *sc; 466 int arg; 467 int oldarg; 468 int error = 0; 469 int function; 470 int dev_id; 471 472 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 473 474 sc = (struct acpi_asus_wmi_softc *)oidp->oid_arg1; 475 function = oidp->oid_arg2; 476 dev_id = acpi_asus_wmi_sysctls[function].dev_id; 477 478 ACPI_SERIAL_BEGIN(asus_wmi); 479 arg = acpi_asus_wmi_sysctl_get(sc, dev_id); 480 oldarg = arg; 481 error = sysctl_handle_int(oidp, &arg, 0, req); 482 if (!error && req->newptr != NULL) 483 error = acpi_asus_wmi_sysctl_set(sc, dev_id, arg, oldarg); 484 ACPI_SERIAL_END(asus_wmi); 485 486 return (error); 487 } 488 489 static int 490 acpi_asus_wmi_sysctl_get(struct acpi_asus_wmi_softc *sc, int dev_id) 491 { 492 UINT32 val = 0; 493 494 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 495 ACPI_SERIAL_ASSERT(asus_wmi); 496 497 acpi_wpi_asus_get_devstate(sc, dev_id, &val); 498 499 switch(dev_id) { 500 case ASUS_WMI_DEVID_THERMAL_CTRL: 501 val = (val - 2731 + 5) / 10; 502 break; 503 case ASUS_WMI_DEVID_PROCESSOR_STATE: 504 case ASUS_WMI_DEVID_FAN_CTRL: 505 break; 506 case ASUS_WMI_DEVID_BRIGHTNESS: 507 val &= ASUS_WMI_DSTS_BRIGHTNESS_MASK; 508 break; 509 case ASUS_WMI_DEVID_KBD_BACKLIGHT: 510 val &= 0x7; 511 break; 512 default: 513 if (val & ASUS_WMI_DSTS_UNKNOWN_BIT) 514 val = -1; 515 else 516 val = !!(val & ASUS_WMI_DSTS_STATUS_BIT); 517 break; 518 } 519 520 return (val); 521 } 522 523 static int 524 acpi_asus_wmi_sysctl_set(struct acpi_asus_wmi_softc *sc, int dev_id, int arg, int oldarg) 525 { 526 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 527 ACPI_SERIAL_ASSERT(asus_wmi); 528 529 switch(dev_id) { 530 case ASUS_WMI_DEVID_KBD_BACKLIGHT: 531 arg = min(0x7, arg); 532 if (arg != 0) 533 arg |= 0x80; 534 break; 535 } 536 537 acpi_wpi_asus_set_devstate(sc, dev_id, arg, NULL); 538 539 return (0); 540 } 541 542 static __inline void 543 acpi_asus_wmi_free_buffer(ACPI_BUFFER* buf) { 544 if (buf && buf->Pointer) { 545 AcpiOsFree(buf->Pointer); 546 } 547 } 548 549 static void 550 acpi_asus_wmi_notify(ACPI_HANDLE h, UINT32 notify, void *context) 551 { 552 device_t dev = context; 553 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 554 UINT32 val; 555 int code = 0; 556 557 struct acpi_asus_wmi_softc *sc = device_get_softc(dev); 558 ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL }; 559 ACPI_OBJECT *obj; 560 ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response); 561 obj = (ACPI_OBJECT*) response.Pointer; 562 if (obj && obj->Type == ACPI_TYPE_INTEGER) { 563 code = obj->Integer.Value; 564 acpi_UserNotify("ASUS", ACPI_ROOT_OBJECT, 565 code); 566 } 567 if (code && sc->handle_keys) { 568 /* Keyboard backlight control. */ 569 if (code == 0xc4 || code == 0xc5) { 570 acpi_wpi_asus_get_devstate(sc, 571 ASUS_WMI_DEVID_KBD_BACKLIGHT, &val); 572 val &= 0x7; 573 if (code == 0xc4) { 574 if (val < 0x7) 575 val++; 576 } else if (val > 0) 577 val--; 578 if (val != 0) 579 val |= 0x80; 580 acpi_wpi_asus_set_devstate(sc, 581 ASUS_WMI_DEVID_KBD_BACKLIGHT, val, NULL); 582 } 583 /* Touchpad control. */ 584 if (code == 0x6b) { 585 acpi_wpi_asus_get_devstate(sc, 586 ASUS_WMI_DEVID_TOUCHPAD, &val); 587 val = !(val & 1); 588 acpi_wpi_asus_set_devstate(sc, 589 ASUS_WMI_DEVID_TOUCHPAD, val, NULL); 590 } 591 } 592 acpi_asus_wmi_free_buffer(&response); 593 } 594 595 static int 596 acpi_asus_wmi_evaluate_method(device_t wmi_dev, int method, 597 UINT32 arg0, UINT32 arg1, UINT32 *retval) 598 { 599 UINT32 params[2] = { arg0, arg1 }; 600 UINT32 result; 601 ACPI_OBJECT *obj; 602 ACPI_BUFFER in = { sizeof(params), ¶ms }; 603 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 604 605 if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, 606 ACPI_ASUS_WMI_MGMT_GUID, 1, method, &in, &out))) { 607 acpi_asus_wmi_free_buffer(&out); 608 return (-EINVAL); 609 } 610 obj = out.Pointer; 611 if (obj && obj->Type == ACPI_TYPE_INTEGER) 612 result = (UINT32) obj->Integer.Value; 613 else 614 result = 0; 615 acpi_asus_wmi_free_buffer(&out); 616 if (retval) 617 *retval = result; 618 return (result == ASUS_WMI_UNSUPPORTED_METHOD ? -ENODEV : 0); 619 } 620 621 static int 622 acpi_wpi_asus_get_devstate(struct acpi_asus_wmi_softc *sc, 623 UINT32 dev_id, UINT32 *retval) 624 { 625 626 return (acpi_asus_wmi_evaluate_method(sc->wmi_dev, 627 sc->dsts_id, dev_id, 0, retval)); 628 } 629 630 static int 631 acpi_wpi_asus_set_devstate(struct acpi_asus_wmi_softc *sc, 632 UINT32 dev_id, UINT32 ctrl_param, UINT32 *retval) 633 { 634 635 return (acpi_asus_wmi_evaluate_method(sc->wmi_dev, 636 ASUS_WMI_METHODID_DEVS, dev_id, ctrl_param, retval)); 637 } 638