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 47ACPI_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 107struct acpi_asus_wmi_softc { 108 device_t dev; 109 device_t wmi_dev; 110 const char *notify_guid; 111 struct sysctl_ctx_list *sysctl_ctx; 112 struct sysctl_oid *sysctl_tree; 113 int dsts_id; 114 int handle_keys; 115}; 116 117static struct { 118 char *name; 119 int dev_id; 120 char *description; 121 int flag_rdonly; 122} acpi_asus_wmi_sysctls[] = { 123 { 124 .name = "hw_switch", 125 .dev_id = ASUS_WMI_DEVID_HW_SWITCH, 126 .description = "hw_switch", 127 }, 128 { 129 .name = "wireless_led", 130 .dev_id = ASUS_WMI_DEVID_WIRELESS_LED, 131 .description = "Wireless LED control", 132 }, 133 { 134 .name = "cwap", 135 .dev_id = ASUS_WMI_DEVID_CWAP, 136 .description = "Alt+F2 function", 137 }, 138 { 139 .name = "wlan", 140 .dev_id = ASUS_WMI_DEVID_WLAN, 141 .description = "WLAN power control", 142 }, 143 { 144 .name = "bluetooth", 145 .dev_id = ASUS_WMI_DEVID_BLUETOOTH, 146 .description = "Bluetooth power control", 147 }, 148 { 149 .name = "gps", 150 .dev_id = ASUS_WMI_DEVID_GPS, 151 .description = "GPS power control", 152 }, 153 { 154 .name = "wimax", 155 .dev_id = ASUS_WMI_DEVID_WIMAX, 156 .description = "WiMAX power control", 157 }, 158 { 159 .name = "wwan3g", 160 .dev_id = ASUS_WMI_DEVID_WWAN3G, 161 .description = "WWAN-3G power control", 162 }, 163 { 164 .name = "uwb", 165 .dev_id = ASUS_WMI_DEVID_UWB, 166 .description = "UWB power control", 167 }, 168 { 169 .name = "led1", 170 .dev_id = ASUS_WMI_DEVID_LED1, 171 .description = "LED1 control", 172 }, 173 { 174 .name = "led2", 175 .dev_id = ASUS_WMI_DEVID_LED2, 176 .description = "LED2 control", 177 }, 178 { 179 .name = "led3", 180 .dev_id = ASUS_WMI_DEVID_LED3, 181 .description = "LED3 control", 182 }, 183 { 184 .name = "led4", 185 .dev_id = ASUS_WMI_DEVID_LED4, 186 .description = "LED4 control", 187 }, 188 { 189 .name = "led5", 190 .dev_id = ASUS_WMI_DEVID_LED5, 191 .description = "LED5 control", 192 }, 193 { 194 .name = "led6", 195 .dev_id = ASUS_WMI_DEVID_LED6, 196 .description = "LED6 control", 197 }, 198 { 199 .name = "backlight", 200 .dev_id = ASUS_WMI_DEVID_BACKLIGHT, 201 .description = "LCD backlight on/off control", 202 }, 203 { 204 .name = "brightness", 205 .dev_id = ASUS_WMI_DEVID_BRIGHTNESS, 206 .description = "LCD backlight brightness control", 207 }, 208 { 209 .name = "kbd_backlight", 210 .dev_id = ASUS_WMI_DEVID_KBD_BACKLIGHT, 211 .description = "Keyboard backlight brightness control", 212 }, 213 { 214 .name = "light_sensor", 215 .dev_id = ASUS_WMI_DEVID_LIGHT_SENSOR, 216 .description = "Ambient light sensor", 217 }, 218 { 219 .name = "camera", 220 .dev_id = ASUS_WMI_DEVID_CAMERA, 221 .description = "Camera power control", 222 }, 223 { 224 .name = "cardreader", 225 .dev_id = ASUS_WMI_DEVID_CARDREADER, 226 .description = "Cardreader power control", 227 }, 228 { 229 .name = "touchpad", 230 .dev_id = ASUS_WMI_DEVID_TOUCHPAD, 231 .description = "Touchpad control", 232 }, 233 { 234 .name = "touchpad_led", 235 .dev_id = ASUS_WMI_DEVID_TOUCHPAD_LED, 236 .description = "Touchpad LED control", 237 }, 238 { 239 .name = "themperature", 240 .dev_id = ASUS_WMI_DEVID_THERMAL_CTRL, 241 .description = "Temperature (C)", 242 .flag_rdonly = 1 243 }, 244 { 245 .name = "fan_speed", 246 .dev_id = ASUS_WMI_DEVID_FAN_CTRL, 247 .description = "Fan speed (0-3)", 248 .flag_rdonly = 1 249 }, 250 { 251 .name = "processor_state", 252 .dev_id = ASUS_WMI_DEVID_PROCESSOR_STATE, 253 .flag_rdonly = 1 254 }, 255 { NULL, 0, NULL, 0 } 256}; 257 258ACPI_SERIAL_DECL(asus_wmi, "ASUS WMI device"); 259 260static void acpi_asus_wmi_identify(driver_t *driver, device_t parent); 261static int acpi_asus_wmi_probe(device_t dev); 262static int acpi_asus_wmi_attach(device_t dev); 263static int acpi_asus_wmi_detach(device_t dev); 264 265static int acpi_asus_wmi_sysctl(SYSCTL_HANDLER_ARGS); 266static int acpi_asus_wmi_sysctl_set(struct acpi_asus_wmi_softc *sc, int dev_id, 267 int arg, int oldarg); 268static int acpi_asus_wmi_sysctl_get(struct acpi_asus_wmi_softc *sc, int dev_id); 269static int acpi_asus_wmi_evaluate_method(device_t wmi_dev, int method, 270 UINT32 arg0, UINT32 arg1, UINT32 *retval); 271static int acpi_wpi_asus_get_devstate(struct acpi_asus_wmi_softc *sc, 272 UINT32 dev_id, UINT32 *retval); 273static int acpi_wpi_asus_set_devstate(struct acpi_asus_wmi_softc *sc, 274 UINT32 dev_id, UINT32 ctrl_param, UINT32 *retval); 275static void acpi_asus_wmi_notify(ACPI_HANDLE h, UINT32 notify, void *context); 276 277static device_method_t acpi_asus_wmi_methods[] = { 278 DEVMETHOD(device_identify, acpi_asus_wmi_identify), 279 DEVMETHOD(device_probe, acpi_asus_wmi_probe), 280 DEVMETHOD(device_attach, acpi_asus_wmi_attach), 281 DEVMETHOD(device_detach, acpi_asus_wmi_detach), 282 283 DEVMETHOD_END 284}; 285 286static driver_t acpi_asus_wmi_driver = { 287 "acpi_asus_wmi", 288 acpi_asus_wmi_methods, 289 sizeof(struct acpi_asus_wmi_softc), 290}; 291 292static devclass_t acpi_asus_wmi_devclass; 293 294DRIVER_MODULE(acpi_asus_wmi, acpi_wmi, acpi_asus_wmi_driver, 295 acpi_asus_wmi_devclass, 0, 0); 296MODULE_DEPEND(acpi_asus_wmi, acpi_wmi, 1, 1, 1); 297MODULE_DEPEND(acpi_asus_wmi, acpi, 1, 1, 1); 298 299static void 300acpi_asus_wmi_identify(driver_t *driver, device_t parent) 301{ 302 303 /* Don't do anything if driver is disabled. */ 304 if (acpi_disabled("asus_wmi")) 305 return; 306 307 /* Add only a single device instance. */ 308 if (device_find_child(parent, "acpi_asus_wmi", -1) != NULL) 309 return; 310 311 /* Check management GUID to see whether system is compatible. */ 312 if (!ACPI_WMI_PROVIDES_GUID_STRING(parent, 313 ACPI_ASUS_WMI_MGMT_GUID)) 314 return; 315 316 if (BUS_ADD_CHILD(parent, 0, "acpi_asus_wmi", -1) == NULL) 317 device_printf(parent, "add acpi_asus_wmi child failed\n"); 318} 319 320static int 321acpi_asus_wmi_probe(device_t dev) 322{ 323 324 if (!ACPI_WMI_PROVIDES_GUID_STRING(device_get_parent(dev), 325 ACPI_ASUS_WMI_MGMT_GUID)) 326 return (EINVAL); 327 device_set_desc(dev, "ASUS WMI device"); 328 return (0); 329} 330 331static int 332acpi_asus_wmi_attach(device_t dev) 333{ 334 struct acpi_asus_wmi_softc *sc; 335 UINT32 val; 336 int dev_id, i; 337 338 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 339 340 sc = device_get_softc(dev); 341 sc->dev = dev; 342 sc->wmi_dev = device_get_parent(dev); 343 sc->handle_keys = 1; 344 345 /* Check management GUID. */ 346 if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 347 ACPI_ASUS_WMI_MGMT_GUID)) { 348 device_printf(dev, 349 "WMI device does not provide the ASUS management GUID\n"); 350 return (EINVAL); 351 } 352 353 /* Find proper DSTS method. */ 354 sc->dsts_id = ASUS_WMI_METHODID_DSTS; 355next: 356 for (i = 0; acpi_asus_wmi_sysctls[i].name != NULL; ++i) { 357 dev_id = acpi_asus_wmi_sysctls[i].dev_id; 358 if (acpi_wpi_asus_get_devstate(sc, dev_id, &val)) 359 continue; 360 break; 361 } 362 if (acpi_asus_wmi_sysctls[i].name == NULL) { 363 if (sc->dsts_id == ASUS_WMI_METHODID_DSTS) { 364 sc->dsts_id = ASUS_WMI_METHODID_DSTS2; 365 goto next; 366 } else { 367 device_printf(dev, "Can not detect DSTS method ID\n"); 368 return (EINVAL); 369 } 370 } 371 372 /* Find proper and attach to notufy GUID. */ 373 if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 374 ACPI_ASUS_WMI_EVENT_GUID)) 375 sc->notify_guid = ACPI_ASUS_WMI_EVENT_GUID; 376 else if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 377 ACPI_EEEPC_WMI_EVENT_GUID)) 378 sc->notify_guid = ACPI_EEEPC_WMI_EVENT_GUID; 379 else 380 sc->notify_guid = NULL; 381 if (sc->notify_guid != NULL) { 382 if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev, 383 sc->notify_guid, acpi_asus_wmi_notify, dev)) 384 sc->notify_guid = NULL; 385 } 386 if (sc->notify_guid == NULL) 387 device_printf(dev, "Could not install event handler!\n"); 388 389 /* Initialize. */ 390 if (!acpi_asus_wmi_evaluate_method(sc->wmi_dev, 391 ASUS_WMI_METHODID_INIT, 0, 0, &val) && bootverbose) 392 device_printf(dev, "Initialization: %#x\n", val); 393 if (!acpi_asus_wmi_evaluate_method(sc->wmi_dev, 394 ASUS_WMI_METHODID_SPEC, 0, 0x9, &val) && bootverbose) 395 device_printf(dev, "WMI BIOS version: %d.%d\n", 396 val >> 16, val & 0xFF); 397 if (!acpi_asus_wmi_evaluate_method(sc->wmi_dev, 398 ASUS_WMI_METHODID_SFUN, 0, 0, &val) && bootverbose) 399 device_printf(dev, "SFUN value: %#x\n", val); 400 401 ACPI_SERIAL_BEGIN(asus_wmi); 402 403 sc->sysctl_ctx = device_get_sysctl_ctx(dev); 404 sc->sysctl_tree = device_get_sysctl_tree(dev); 405 SYSCTL_ADD_INT(sc->sysctl_ctx, 406 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 407 "handle_keys", CTLFLAG_RW, &sc->handle_keys, 408 0, "Handle some hardware keys inside the driver"); 409 for (i = 0; acpi_asus_wmi_sysctls[i].name != NULL; ++i) { 410 dev_id = acpi_asus_wmi_sysctls[i].dev_id; 411 if (acpi_wpi_asus_get_devstate(sc, dev_id, &val)) 412 continue; 413 switch (dev_id) { 414 case ASUS_WMI_DEVID_THERMAL_CTRL: 415 case ASUS_WMI_DEVID_PROCESSOR_STATE: 416 case ASUS_WMI_DEVID_FAN_CTRL: 417 case ASUS_WMI_DEVID_BRIGHTNESS: 418 if (val == 0) 419 continue; 420 break; 421 default: 422 if ((val & ASUS_WMI_DSTS_PRESENCE_BIT) == 0) 423 continue; 424 break; 425 } 426 427 if (acpi_asus_wmi_sysctls[i].flag_rdonly != 0) { 428 SYSCTL_ADD_PROC(sc->sysctl_ctx, 429 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 430 acpi_asus_wmi_sysctls[i].name, 431 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT, 432 sc, i, acpi_asus_wmi_sysctl, "I", 433 acpi_asus_wmi_sysctls[i].description); 434 } else { 435 SYSCTL_ADD_PROC(sc->sysctl_ctx, 436 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 437 acpi_asus_wmi_sysctls[i].name, 438 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, 439 sc, i, acpi_asus_wmi_sysctl, "I", 440 acpi_asus_wmi_sysctls[i].description); 441 } 442 } 443 ACPI_SERIAL_END(asus_wmi); 444 445 return (0); 446} 447 448static int 449acpi_asus_wmi_detach(device_t dev) 450{ 451 struct acpi_asus_wmi_softc *sc = device_get_softc(dev); 452 453 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 454 455 if (sc->notify_guid) 456 ACPI_WMI_REMOVE_EVENT_HANDLER(dev, sc->notify_guid); 457 458 return (0); 459} 460 461static int 462acpi_asus_wmi_sysctl(SYSCTL_HANDLER_ARGS) 463{ 464 struct acpi_asus_wmi_softc *sc; 465 int arg; 466 int oldarg; 467 int error = 0; 468 int function; 469 int dev_id; 470 471 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 472 473 sc = (struct acpi_asus_wmi_softc *)oidp->oid_arg1; 474 function = oidp->oid_arg2; 475 dev_id = acpi_asus_wmi_sysctls[function].dev_id; 476 477 ACPI_SERIAL_BEGIN(asus_wmi); 478 arg = acpi_asus_wmi_sysctl_get(sc, dev_id); 479 oldarg = arg; 480 error = sysctl_handle_int(oidp, &arg, 0, req); 481 if (!error && req->newptr != NULL) 482 error = acpi_asus_wmi_sysctl_set(sc, dev_id, arg, oldarg); 483 ACPI_SERIAL_END(asus_wmi); 484 485 return (error); 486} 487 488static int 489acpi_asus_wmi_sysctl_get(struct acpi_asus_wmi_softc *sc, int dev_id) 490{ 491 UINT32 val = 0; 492 493 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 494 ACPI_SERIAL_ASSERT(asus_wmi); 495 496 acpi_wpi_asus_get_devstate(sc, dev_id, &val); 497 498 switch(dev_id) { 499 case ASUS_WMI_DEVID_THERMAL_CTRL: 500 val = (val - 2731 + 5) / 10; 501 break; 502 case ASUS_WMI_DEVID_PROCESSOR_STATE: 503 case ASUS_WMI_DEVID_FAN_CTRL: 504 break; 505 case ASUS_WMI_DEVID_BRIGHTNESS: 506 val &= ASUS_WMI_DSTS_BRIGHTNESS_MASK; 507 break; 508 case ASUS_WMI_DEVID_KBD_BACKLIGHT: 509 val &= 0x7; 510 break; 511 default: 512 if (val & ASUS_WMI_DSTS_UNKNOWN_BIT) 513 val = -1; 514 else 515 val = !!(val & ASUS_WMI_DSTS_STATUS_BIT); 516 break; 517 } 518 519 return (val); 520} 521 522static int 523acpi_asus_wmi_sysctl_set(struct acpi_asus_wmi_softc *sc, int dev_id, int arg, int oldarg) 524{ 525 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 526 ACPI_SERIAL_ASSERT(asus_wmi); 527 528 switch(dev_id) { 529 case ASUS_WMI_DEVID_KBD_BACKLIGHT: 530 arg = min(0x7, arg); 531 if (arg != 0) 532 arg |= 0x80; 533 break; 534 } 535 536 acpi_wpi_asus_set_devstate(sc, dev_id, arg, NULL); 537 538 return (0); 539} 540 541static __inline void 542acpi_asus_wmi_free_buffer(ACPI_BUFFER* buf) { 543 if (buf && buf->Pointer) { 544 AcpiOsFree(buf->Pointer); 545 } 546} 547 548static void 549acpi_asus_wmi_notify(ACPI_HANDLE h, UINT32 notify, void *context) 550{ 551 device_t dev = context; 552 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 553 UINT32 val; 554 int code = 0; 555 556 struct acpi_asus_wmi_softc *sc = device_get_softc(dev); 557 ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL }; 558 ACPI_OBJECT *obj; 559 ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response); 560 obj = (ACPI_OBJECT*) response.Pointer; 561 if (obj && obj->Type == ACPI_TYPE_INTEGER) { 562 code = obj->Integer.Value; 563 acpi_UserNotify("ASUS", ACPI_ROOT_OBJECT, 564 code); 565 } 566 if (code && sc->handle_keys) { 567 /* Keyboard backlight control. */ 568 if (code == 0xc4 || code == 0xc5) { 569 acpi_wpi_asus_get_devstate(sc, 570 ASUS_WMI_DEVID_KBD_BACKLIGHT, &val); 571 val &= 0x7; 572 if (code == 0xc4) { 573 if (val < 0x7) 574 val++; 575 } else if (val > 0) 576 val--; 577 if (val != 0) 578 val |= 0x80; 579 acpi_wpi_asus_set_devstate(sc, 580 ASUS_WMI_DEVID_KBD_BACKLIGHT, val, NULL); 581 } 582 /* Touchpad control. */ 583 if (code == 0x6b) { 584 acpi_wpi_asus_get_devstate(sc, 585 ASUS_WMI_DEVID_TOUCHPAD, &val); 586 val = !(val & 1); 587 acpi_wpi_asus_set_devstate(sc, 588 ASUS_WMI_DEVID_TOUCHPAD, val, NULL); 589 } 590 } 591 acpi_asus_wmi_free_buffer(&response); 592} 593 594static int 595acpi_asus_wmi_evaluate_method(device_t wmi_dev, int method, 596 UINT32 arg0, UINT32 arg1, UINT32 *retval) 597{ 598 UINT32 params[2] = { arg0, arg1 }; 599 UINT32 result; 600 ACPI_OBJECT *obj; 601 ACPI_BUFFER in = { sizeof(params), ¶ms }; 602 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 603 604 if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, 605 ACPI_ASUS_WMI_MGMT_GUID, 1, method, &in, &out))) { 606 acpi_asus_wmi_free_buffer(&out); 607 return (-EINVAL); 608 } 609 obj = out.Pointer; 610 if (obj && obj->Type == ACPI_TYPE_INTEGER) 611 result = (UINT32) obj->Integer.Value; 612 else 613 result = 0; 614 acpi_asus_wmi_free_buffer(&out); 615 if (retval) 616 *retval = result; 617 return (result == ASUS_WMI_UNSUPPORTED_METHOD ? -ENODEV : 0); 618} 619 620static int 621acpi_wpi_asus_get_devstate(struct acpi_asus_wmi_softc *sc, 622 UINT32 dev_id, UINT32 *retval) 623{ 624 625 return (acpi_asus_wmi_evaluate_method(sc->wmi_dev, 626 sc->dsts_id, dev_id, 0, retval)); 627} 628 629static int 630acpi_wpi_asus_set_devstate(struct acpi_asus_wmi_softc *sc, 631 UINT32 dev_id, UINT32 ctrl_param, UINT32 *retval) 632{ 633 634 return (acpi_asus_wmi_evaluate_method(sc->wmi_dev, 635 ASUS_WMI_METHODID_DEVS, dev_id, ctrl_param, retval)); 636} 637