1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Asus PC WMI hotkey driver 4 * 5 * Copyright(C) 2010 Intel Corporation. 6 * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com> 7 * 8 * Portions based on wistron_btns.c: 9 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz> 10 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org> 11 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru> 12 */ 13 14 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 15 16 #include <linux/kernel.h> 17 #include <linux/module.h> 18 #include <linux/init.h> 19 #include <linux/types.h> 20 #include <linux/slab.h> 21 #include <linux/input.h> 22 #include <linux/input/sparse-keymap.h> 23 #include <linux/fb.h> 24 #include <linux/backlight.h> 25 #include <linux/leds.h> 26 #include <linux/rfkill.h> 27 #include <linux/pci.h> 28 #include <linux/pci_hotplug.h> 29 #include <linux/power_supply.h> 30 #include <linux/hwmon.h> 31 #include <linux/hwmon-sysfs.h> 32 #include <linux/debugfs.h> 33 #include <linux/seq_file.h> 34 #include <linux/platform_data/x86/asus-wmi.h> 35 #include <linux/platform_device.h> 36 #include <linux/thermal.h> 37 #include <linux/acpi.h> 38 #include <linux/dmi.h> 39 40 #include <acpi/battery.h> 41 #include <acpi/video.h> 42 43 #include "asus-wmi.h" 44 45 MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, " 46 "Yong Wang <yong.y.wang@intel.com>"); 47 MODULE_DESCRIPTION("Asus Generic WMI Driver"); 48 MODULE_LICENSE("GPL"); 49 50 #define to_asus_wmi_driver(pdrv) \ 51 (container_of((pdrv), struct asus_wmi_driver, platform_driver)) 52 53 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66" 54 55 #define NOTIFY_BRNUP_MIN 0x11 56 #define NOTIFY_BRNUP_MAX 0x1f 57 #define NOTIFY_BRNDOWN_MIN 0x20 58 #define NOTIFY_BRNDOWN_MAX 0x2e 59 #define NOTIFY_FNLOCK_TOGGLE 0x4e 60 #define NOTIFY_KBD_BRTUP 0xc4 61 #define NOTIFY_KBD_BRTDWN 0xc5 62 #define NOTIFY_KBD_BRTTOGGLE 0xc7 63 #define NOTIFY_KBD_FBM 0x99 64 65 #define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0) 66 67 #define ASUS_FAN_DESC "cpu_fan" 68 #define ASUS_FAN_MFUN 0x13 69 #define ASUS_FAN_SFUN_READ 0x06 70 #define ASUS_FAN_SFUN_WRITE 0x07 71 72 /* Based on standard hwmon pwmX_enable values */ 73 #define ASUS_FAN_CTRL_FULLSPEED 0 74 #define ASUS_FAN_CTRL_MANUAL 1 75 #define ASUS_FAN_CTRL_AUTO 2 76 77 #define ASUS_FAN_BOOST_MODE_NORMAL 0 78 #define ASUS_FAN_BOOST_MODE_OVERBOOST 1 79 #define ASUS_FAN_BOOST_MODE_OVERBOOST_MASK 0x01 80 #define ASUS_FAN_BOOST_MODE_SILENT 2 81 #define ASUS_FAN_BOOST_MODE_SILENT_MASK 0x02 82 #define ASUS_FAN_BOOST_MODES_MASK 0x03 83 84 #define USB_INTEL_XUSB2PR 0xD0 85 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31 86 87 #define ASUS_ACPI_UID_ASUSWMI "ASUSWMI" 88 #define ASUS_ACPI_UID_ATK "ATK" 89 90 #define WMI_EVENT_QUEUE_SIZE 0x10 91 #define WMI_EVENT_QUEUE_END 0x1 92 #define WMI_EVENT_MASK 0xFFFF 93 /* The WMI hotkey event value is always the same. */ 94 #define WMI_EVENT_VALUE_ATK 0xFF 95 96 #define WMI_EVENT_MASK 0xFFFF 97 98 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL }; 99 100 static bool ashs_present(void) 101 { 102 int i = 0; 103 while (ashs_ids[i]) { 104 if (acpi_dev_found(ashs_ids[i++])) 105 return true; 106 } 107 return false; 108 } 109 110 struct bios_args { 111 u32 arg0; 112 u32 arg1; 113 u32 arg2; /* At least TUF Gaming series uses 3 dword input buffer. */ 114 } __packed; 115 116 /* 117 * Struct that's used for all methods called via AGFN. Naming is 118 * identically to the AML code. 119 */ 120 struct agfn_args { 121 u16 mfun; /* probably "Multi-function" to be called */ 122 u16 sfun; /* probably "Sub-function" to be called */ 123 u16 len; /* size of the hole struct, including subfunction fields */ 124 u8 stas; /* not used by now */ 125 u8 err; /* zero on success */ 126 } __packed; 127 128 /* struct used for calling fan read and write methods */ 129 struct agfn_fan_args { 130 struct agfn_args agfn; /* common fields */ 131 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */ 132 u32 speed; /* read: RPM/100 - write: 0-255 */ 133 } __packed; 134 135 /* 136 * <platform>/ - debugfs root directory 137 * dev_id - current dev_id 138 * ctrl_param - current ctrl_param 139 * method_id - current method_id 140 * devs - call DEVS(dev_id, ctrl_param) and print result 141 * dsts - call DSTS(dev_id) and print result 142 * call - call method_id(dev_id, ctrl_param) and print result 143 */ 144 struct asus_wmi_debug { 145 struct dentry *root; 146 u32 method_id; 147 u32 dev_id; 148 u32 ctrl_param; 149 }; 150 151 struct asus_rfkill { 152 struct asus_wmi *asus; 153 struct rfkill *rfkill; 154 u32 dev_id; 155 }; 156 157 enum fan_type { 158 FAN_TYPE_NONE = 0, 159 FAN_TYPE_AGFN, /* deprecated on newer platforms */ 160 FAN_TYPE_SPEC83, /* starting in Spec 8.3, use CPU_FAN_CTRL */ 161 }; 162 163 struct asus_wmi { 164 int dsts_id; 165 int spec; 166 int sfun; 167 bool wmi_event_queue; 168 169 struct input_dev *inputdev; 170 struct backlight_device *backlight_device; 171 struct platform_device *platform_device; 172 173 struct led_classdev wlan_led; 174 int wlan_led_wk; 175 struct led_classdev tpd_led; 176 int tpd_led_wk; 177 struct led_classdev kbd_led; 178 int kbd_led_wk; 179 struct led_classdev lightbar_led; 180 int lightbar_led_wk; 181 struct workqueue_struct *led_workqueue; 182 struct work_struct tpd_led_work; 183 struct work_struct wlan_led_work; 184 struct work_struct lightbar_led_work; 185 186 struct asus_rfkill wlan; 187 struct asus_rfkill bluetooth; 188 struct asus_rfkill wimax; 189 struct asus_rfkill wwan3g; 190 struct asus_rfkill gps; 191 struct asus_rfkill uwb; 192 193 enum fan_type fan_type; 194 int fan_pwm_mode; 195 int agfn_pwm; 196 197 bool fan_boost_mode_available; 198 u8 fan_boost_mode_mask; 199 u8 fan_boost_mode; 200 201 // The RSOC controls the maximum charging percentage. 202 bool battery_rsoc_available; 203 204 struct hotplug_slot hotplug_slot; 205 struct mutex hotplug_lock; 206 struct mutex wmi_lock; 207 struct workqueue_struct *hotplug_workqueue; 208 struct work_struct hotplug_work; 209 210 bool fnlock_locked; 211 212 struct asus_wmi_debug debug; 213 214 struct asus_wmi_driver *driver; 215 }; 216 217 /* Input **********************************************************************/ 218 219 static int asus_wmi_input_init(struct asus_wmi *asus) 220 { 221 int err; 222 223 asus->inputdev = input_allocate_device(); 224 if (!asus->inputdev) 225 return -ENOMEM; 226 227 asus->inputdev->name = asus->driver->input_name; 228 asus->inputdev->phys = asus->driver->input_phys; 229 asus->inputdev->id.bustype = BUS_HOST; 230 asus->inputdev->dev.parent = &asus->platform_device->dev; 231 set_bit(EV_REP, asus->inputdev->evbit); 232 233 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL); 234 if (err) 235 goto err_free_dev; 236 237 err = input_register_device(asus->inputdev); 238 if (err) 239 goto err_free_dev; 240 241 return 0; 242 243 err_free_dev: 244 input_free_device(asus->inputdev); 245 return err; 246 } 247 248 static void asus_wmi_input_exit(struct asus_wmi *asus) 249 { 250 if (asus->inputdev) 251 input_unregister_device(asus->inputdev); 252 253 asus->inputdev = NULL; 254 } 255 256 /* WMI ************************************************************************/ 257 258 static int asus_wmi_evaluate_method3(u32 method_id, 259 u32 arg0, u32 arg1, u32 arg2, u32 *retval) 260 { 261 struct bios_args args = { 262 .arg0 = arg0, 263 .arg1 = arg1, 264 .arg2 = arg2, 265 }; 266 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 267 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 268 acpi_status status; 269 union acpi_object *obj; 270 u32 tmp = 0; 271 272 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id, 273 &input, &output); 274 275 if (ACPI_FAILURE(status)) 276 return -EIO; 277 278 obj = (union acpi_object *)output.pointer; 279 if (obj && obj->type == ACPI_TYPE_INTEGER) 280 tmp = (u32) obj->integer.value; 281 282 if (retval) 283 *retval = tmp; 284 285 kfree(obj); 286 287 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD) 288 return -ENODEV; 289 290 return 0; 291 } 292 293 int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval) 294 { 295 return asus_wmi_evaluate_method3(method_id, arg0, arg1, 0, retval); 296 } 297 EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method); 298 299 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args) 300 { 301 struct acpi_buffer input; 302 u64 phys_addr; 303 u32 retval; 304 u32 status = -1; 305 306 /* 307 * Copy to dma capable address otherwise memory corruption occurs as 308 * bios has to be able to access it. 309 */ 310 input.pointer = kmemdup(args.pointer, args.length, GFP_DMA | GFP_KERNEL); 311 input.length = args.length; 312 if (!input.pointer) 313 return -ENOMEM; 314 phys_addr = virt_to_phys(input.pointer); 315 316 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN, 317 phys_addr, 0, &retval); 318 if (!status) 319 memcpy(args.pointer, input.pointer, args.length); 320 321 kfree(input.pointer); 322 if (status) 323 return -ENXIO; 324 325 return retval; 326 } 327 328 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval) 329 { 330 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval); 331 } 332 333 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, 334 u32 *retval) 335 { 336 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id, 337 ctrl_param, retval); 338 } 339 340 /* Helper for special devices with magic return codes */ 341 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus, 342 u32 dev_id, u32 mask) 343 { 344 u32 retval = 0; 345 int err; 346 347 err = asus_wmi_get_devstate(asus, dev_id, &retval); 348 if (err < 0) 349 return err; 350 351 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT)) 352 return -ENODEV; 353 354 if (mask == ASUS_WMI_DSTS_STATUS_BIT) { 355 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT) 356 return -ENODEV; 357 } 358 359 return retval & mask; 360 } 361 362 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id) 363 { 364 return asus_wmi_get_devstate_bits(asus, dev_id, 365 ASUS_WMI_DSTS_STATUS_BIT); 366 } 367 368 static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id) 369 { 370 u32 retval; 371 int status = asus_wmi_get_devstate(asus, dev_id, &retval); 372 373 return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT); 374 } 375 376 /* Battery ********************************************************************/ 377 378 /* The battery maximum charging percentage */ 379 static int charge_end_threshold; 380 381 static ssize_t charge_control_end_threshold_store(struct device *dev, 382 struct device_attribute *attr, 383 const char *buf, size_t count) 384 { 385 int value, ret, rv; 386 387 ret = kstrtouint(buf, 10, &value); 388 if (ret) 389 return ret; 390 391 if (value < 0 || value > 100) 392 return -EINVAL; 393 394 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv); 395 if (ret) 396 return ret; 397 398 if (rv != 1) 399 return -EIO; 400 401 /* There isn't any method in the DSDT to read the threshold, so we 402 * save the threshold. 403 */ 404 charge_end_threshold = value; 405 return count; 406 } 407 408 static ssize_t charge_control_end_threshold_show(struct device *device, 409 struct device_attribute *attr, 410 char *buf) 411 { 412 return sprintf(buf, "%d\n", charge_end_threshold); 413 } 414 415 static DEVICE_ATTR_RW(charge_control_end_threshold); 416 417 static int asus_wmi_battery_add(struct power_supply *battery) 418 { 419 /* The WMI method does not provide a way to specific a battery, so we 420 * just assume it is the first battery. 421 */ 422 if (strcmp(battery->desc->name, "BAT0") != 0) 423 return -ENODEV; 424 425 if (device_create_file(&battery->dev, 426 &dev_attr_charge_control_end_threshold)) 427 return -ENODEV; 428 429 /* The charge threshold is only reset when the system is power cycled, 430 * and we can't get the current threshold so let set it to 100% when 431 * a battery is added. 432 */ 433 asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL); 434 charge_end_threshold = 100; 435 436 return 0; 437 } 438 439 static int asus_wmi_battery_remove(struct power_supply *battery) 440 { 441 device_remove_file(&battery->dev, 442 &dev_attr_charge_control_end_threshold); 443 return 0; 444 } 445 446 static struct acpi_battery_hook battery_hook = { 447 .add_battery = asus_wmi_battery_add, 448 .remove_battery = asus_wmi_battery_remove, 449 .name = "ASUS Battery Extension", 450 }; 451 452 static void asus_wmi_battery_init(struct asus_wmi *asus) 453 { 454 asus->battery_rsoc_available = false; 455 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) { 456 asus->battery_rsoc_available = true; 457 battery_hook_register(&battery_hook); 458 } 459 } 460 461 static void asus_wmi_battery_exit(struct asus_wmi *asus) 462 { 463 if (asus->battery_rsoc_available) 464 battery_hook_unregister(&battery_hook); 465 } 466 467 /* LEDs ***********************************************************************/ 468 469 /* 470 * These functions actually update the LED's, and are called from a 471 * workqueue. By doing this as separate work rather than when the LED 472 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 473 * potentially bad time, such as a timer interrupt. 474 */ 475 static void tpd_led_update(struct work_struct *work) 476 { 477 int ctrl_param; 478 struct asus_wmi *asus; 479 480 asus = container_of(work, struct asus_wmi, tpd_led_work); 481 482 ctrl_param = asus->tpd_led_wk; 483 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL); 484 } 485 486 static void tpd_led_set(struct led_classdev *led_cdev, 487 enum led_brightness value) 488 { 489 struct asus_wmi *asus; 490 491 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 492 493 asus->tpd_led_wk = !!value; 494 queue_work(asus->led_workqueue, &asus->tpd_led_work); 495 } 496 497 static int read_tpd_led_state(struct asus_wmi *asus) 498 { 499 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED); 500 } 501 502 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) 503 { 504 struct asus_wmi *asus; 505 506 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 507 508 return read_tpd_led_state(asus); 509 } 510 511 static void kbd_led_update(struct asus_wmi *asus) 512 { 513 int ctrl_param = 0; 514 515 /* 516 * bits 0-2: level 517 * bit 7: light on/off 518 */ 519 if (asus->kbd_led_wk > 0) 520 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F); 521 522 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL); 523 } 524 525 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env) 526 { 527 int retval; 528 529 /* 530 * bits 0-2: level 531 * bit 7: light on/off 532 * bit 8-10: environment (0: dark, 1: normal, 2: light) 533 * bit 17: status unknown 534 */ 535 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT, 536 0xFFFF); 537 538 /* Unknown status is considered as off */ 539 if (retval == 0x8000) 540 retval = 0; 541 542 if (retval < 0) 543 return retval; 544 545 if (level) 546 *level = retval & 0x7F; 547 if (env) 548 *env = (retval >> 8) & 0x7F; 549 return 0; 550 } 551 552 static void do_kbd_led_set(struct led_classdev *led_cdev, int value) 553 { 554 struct asus_wmi *asus; 555 int max_level; 556 557 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 558 max_level = asus->kbd_led.max_brightness; 559 560 asus->kbd_led_wk = clamp_val(value, 0, max_level); 561 kbd_led_update(asus); 562 } 563 564 static void kbd_led_set(struct led_classdev *led_cdev, 565 enum led_brightness value) 566 { 567 /* Prevent disabling keyboard backlight on module unregister */ 568 if (led_cdev->flags & LED_UNREGISTERING) 569 return; 570 571 do_kbd_led_set(led_cdev, value); 572 } 573 574 static void kbd_led_set_by_kbd(struct asus_wmi *asus, enum led_brightness value) 575 { 576 struct led_classdev *led_cdev = &asus->kbd_led; 577 578 do_kbd_led_set(led_cdev, value); 579 led_classdev_notify_brightness_hw_changed(led_cdev, asus->kbd_led_wk); 580 } 581 582 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev) 583 { 584 struct asus_wmi *asus; 585 int retval, value; 586 587 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 588 589 retval = kbd_led_read(asus, &value, NULL); 590 if (retval < 0) 591 return retval; 592 593 return value; 594 } 595 596 static int wlan_led_unknown_state(struct asus_wmi *asus) 597 { 598 u32 result; 599 600 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 601 602 return result & ASUS_WMI_DSTS_UNKNOWN_BIT; 603 } 604 605 static void wlan_led_update(struct work_struct *work) 606 { 607 int ctrl_param; 608 struct asus_wmi *asus; 609 610 asus = container_of(work, struct asus_wmi, wlan_led_work); 611 612 ctrl_param = asus->wlan_led_wk; 613 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL); 614 } 615 616 static void wlan_led_set(struct led_classdev *led_cdev, 617 enum led_brightness value) 618 { 619 struct asus_wmi *asus; 620 621 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 622 623 asus->wlan_led_wk = !!value; 624 queue_work(asus->led_workqueue, &asus->wlan_led_work); 625 } 626 627 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev) 628 { 629 struct asus_wmi *asus; 630 u32 result; 631 632 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 633 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 634 635 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 636 } 637 638 static void lightbar_led_update(struct work_struct *work) 639 { 640 struct asus_wmi *asus; 641 int ctrl_param; 642 643 asus = container_of(work, struct asus_wmi, lightbar_led_work); 644 645 ctrl_param = asus->lightbar_led_wk; 646 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL); 647 } 648 649 static void lightbar_led_set(struct led_classdev *led_cdev, 650 enum led_brightness value) 651 { 652 struct asus_wmi *asus; 653 654 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 655 656 asus->lightbar_led_wk = !!value; 657 queue_work(asus->led_workqueue, &asus->lightbar_led_work); 658 } 659 660 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev) 661 { 662 struct asus_wmi *asus; 663 u32 result; 664 665 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 666 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result); 667 668 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK; 669 } 670 671 static void asus_wmi_led_exit(struct asus_wmi *asus) 672 { 673 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 674 led_classdev_unregister(&asus->kbd_led); 675 if (!IS_ERR_OR_NULL(asus->tpd_led.dev)) 676 led_classdev_unregister(&asus->tpd_led); 677 if (!IS_ERR_OR_NULL(asus->wlan_led.dev)) 678 led_classdev_unregister(&asus->wlan_led); 679 if (!IS_ERR_OR_NULL(asus->lightbar_led.dev)) 680 led_classdev_unregister(&asus->lightbar_led); 681 if (asus->led_workqueue) 682 destroy_workqueue(asus->led_workqueue); 683 } 684 685 static int asus_wmi_led_init(struct asus_wmi *asus) 686 { 687 int rv = 0, led_val; 688 689 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 690 if (!asus->led_workqueue) 691 return -ENOMEM; 692 693 if (read_tpd_led_state(asus) >= 0) { 694 INIT_WORK(&asus->tpd_led_work, tpd_led_update); 695 696 asus->tpd_led.name = "asus::touchpad"; 697 asus->tpd_led.brightness_set = tpd_led_set; 698 asus->tpd_led.brightness_get = tpd_led_get; 699 asus->tpd_led.max_brightness = 1; 700 701 rv = led_classdev_register(&asus->platform_device->dev, 702 &asus->tpd_led); 703 if (rv) 704 goto error; 705 } 706 707 if (!kbd_led_read(asus, &led_val, NULL)) { 708 asus->kbd_led_wk = led_val; 709 asus->kbd_led.name = "asus::kbd_backlight"; 710 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED; 711 asus->kbd_led.brightness_set = kbd_led_set; 712 asus->kbd_led.brightness_get = kbd_led_get; 713 asus->kbd_led.max_brightness = 3; 714 715 rv = led_classdev_register(&asus->platform_device->dev, 716 &asus->kbd_led); 717 if (rv) 718 goto error; 719 } 720 721 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_WIRELESS_LED) 722 && (asus->driver->quirks->wapf > 0)) { 723 INIT_WORK(&asus->wlan_led_work, wlan_led_update); 724 725 asus->wlan_led.name = "asus::wlan"; 726 asus->wlan_led.brightness_set = wlan_led_set; 727 if (!wlan_led_unknown_state(asus)) 728 asus->wlan_led.brightness_get = wlan_led_get; 729 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME; 730 asus->wlan_led.max_brightness = 1; 731 asus->wlan_led.default_trigger = "asus-wlan"; 732 733 rv = led_classdev_register(&asus->platform_device->dev, 734 &asus->wlan_led); 735 if (rv) 736 goto error; 737 } 738 739 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_LIGHTBAR)) { 740 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update); 741 742 asus->lightbar_led.name = "asus::lightbar"; 743 asus->lightbar_led.brightness_set = lightbar_led_set; 744 asus->lightbar_led.brightness_get = lightbar_led_get; 745 asus->lightbar_led.max_brightness = 1; 746 747 rv = led_classdev_register(&asus->platform_device->dev, 748 &asus->lightbar_led); 749 } 750 751 error: 752 if (rv) 753 asus_wmi_led_exit(asus); 754 755 return rv; 756 } 757 758 /* RF *************************************************************************/ 759 760 /* 761 * PCI hotplug (for wlan rfkill) 762 */ 763 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus) 764 { 765 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 766 767 if (result < 0) 768 return false; 769 return !result; 770 } 771 772 static void asus_rfkill_hotplug(struct asus_wmi *asus) 773 { 774 struct pci_dev *dev; 775 struct pci_bus *bus; 776 bool blocked; 777 bool absent; 778 u32 l; 779 780 mutex_lock(&asus->wmi_lock); 781 blocked = asus_wlan_rfkill_blocked(asus); 782 mutex_unlock(&asus->wmi_lock); 783 784 mutex_lock(&asus->hotplug_lock); 785 pci_lock_rescan_remove(); 786 787 if (asus->wlan.rfkill) 788 rfkill_set_sw_state(asus->wlan.rfkill, blocked); 789 790 if (asus->hotplug_slot.ops) { 791 bus = pci_find_bus(0, 1); 792 if (!bus) { 793 pr_warn("Unable to find PCI bus 1?\n"); 794 goto out_unlock; 795 } 796 797 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) { 798 pr_err("Unable to read PCI config space?\n"); 799 goto out_unlock; 800 } 801 absent = (l == 0xffffffff); 802 803 if (blocked != absent) { 804 pr_warn("BIOS says wireless lan is %s, " 805 "but the pci device is %s\n", 806 blocked ? "blocked" : "unblocked", 807 absent ? "absent" : "present"); 808 pr_warn("skipped wireless hotplug as probably " 809 "inappropriate for this model\n"); 810 goto out_unlock; 811 } 812 813 if (!blocked) { 814 dev = pci_get_slot(bus, 0); 815 if (dev) { 816 /* Device already present */ 817 pci_dev_put(dev); 818 goto out_unlock; 819 } 820 dev = pci_scan_single_device(bus, 0); 821 if (dev) { 822 pci_bus_assign_resources(bus); 823 pci_bus_add_device(dev); 824 } 825 } else { 826 dev = pci_get_slot(bus, 0); 827 if (dev) { 828 pci_stop_and_remove_bus_device(dev); 829 pci_dev_put(dev); 830 } 831 } 832 } 833 834 out_unlock: 835 pci_unlock_rescan_remove(); 836 mutex_unlock(&asus->hotplug_lock); 837 } 838 839 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data) 840 { 841 struct asus_wmi *asus = data; 842 843 if (event != ACPI_NOTIFY_BUS_CHECK) 844 return; 845 846 /* 847 * We can't call directly asus_rfkill_hotplug because most 848 * of the time WMBC is still being executed and not reetrant. 849 * There is currently no way to tell ACPICA that we want this 850 * method to be serialized, we schedule a asus_rfkill_hotplug 851 * call later, in a safer context. 852 */ 853 queue_work(asus->hotplug_workqueue, &asus->hotplug_work); 854 } 855 856 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node) 857 { 858 acpi_status status; 859 acpi_handle handle; 860 861 status = acpi_get_handle(NULL, node, &handle); 862 if (ACPI_FAILURE(status)) 863 return -ENODEV; 864 865 status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY, 866 asus_rfkill_notify, asus); 867 if (ACPI_FAILURE(status)) 868 pr_warn("Failed to register notify on %s\n", node); 869 870 return 0; 871 } 872 873 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node) 874 { 875 acpi_status status = AE_OK; 876 acpi_handle handle; 877 878 status = acpi_get_handle(NULL, node, &handle); 879 if (ACPI_FAILURE(status)) 880 return; 881 882 status = acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY, 883 asus_rfkill_notify); 884 if (ACPI_FAILURE(status)) 885 pr_err("Error removing rfkill notify handler %s\n", node); 886 } 887 888 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot, 889 u8 *value) 890 { 891 struct asus_wmi *asus = container_of(hotplug_slot, 892 struct asus_wmi, hotplug_slot); 893 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 894 895 if (result < 0) 896 return result; 897 898 *value = !!result; 899 return 0; 900 } 901 902 static const struct hotplug_slot_ops asus_hotplug_slot_ops = { 903 .get_adapter_status = asus_get_adapter_status, 904 .get_power_status = asus_get_adapter_status, 905 }; 906 907 static void asus_hotplug_work(struct work_struct *work) 908 { 909 struct asus_wmi *asus; 910 911 asus = container_of(work, struct asus_wmi, hotplug_work); 912 asus_rfkill_hotplug(asus); 913 } 914 915 static int asus_setup_pci_hotplug(struct asus_wmi *asus) 916 { 917 int ret = -ENOMEM; 918 struct pci_bus *bus = pci_find_bus(0, 1); 919 920 if (!bus) { 921 pr_err("Unable to find wifi PCI bus\n"); 922 return -ENODEV; 923 } 924 925 asus->hotplug_workqueue = 926 create_singlethread_workqueue("hotplug_workqueue"); 927 if (!asus->hotplug_workqueue) 928 goto error_workqueue; 929 930 INIT_WORK(&asus->hotplug_work, asus_hotplug_work); 931 932 asus->hotplug_slot.ops = &asus_hotplug_slot_ops; 933 934 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi"); 935 if (ret) { 936 pr_err("Unable to register hotplug slot - %d\n", ret); 937 goto error_register; 938 } 939 940 return 0; 941 942 error_register: 943 asus->hotplug_slot.ops = NULL; 944 destroy_workqueue(asus->hotplug_workqueue); 945 error_workqueue: 946 return ret; 947 } 948 949 /* 950 * Rfkill devices 951 */ 952 static int asus_rfkill_set(void *data, bool blocked) 953 { 954 struct asus_rfkill *priv = data; 955 u32 ctrl_param = !blocked; 956 u32 dev_id = priv->dev_id; 957 958 /* 959 * If the user bit is set, BIOS can't set and record the wlan status, 960 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED 961 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN). 962 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED 963 * while setting the wlan status through WMI. 964 * This is also the behavior that windows app will do. 965 */ 966 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 967 priv->asus->driver->wlan_ctrl_by_user) 968 dev_id = ASUS_WMI_DEVID_WLAN_LED; 969 970 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL); 971 } 972 973 static void asus_rfkill_query(struct rfkill *rfkill, void *data) 974 { 975 struct asus_rfkill *priv = data; 976 int result; 977 978 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id); 979 980 if (result < 0) 981 return; 982 983 rfkill_set_sw_state(priv->rfkill, !result); 984 } 985 986 static int asus_rfkill_wlan_set(void *data, bool blocked) 987 { 988 struct asus_rfkill *priv = data; 989 struct asus_wmi *asus = priv->asus; 990 int ret; 991 992 /* 993 * This handler is enabled only if hotplug is enabled. 994 * In this case, the asus_wmi_set_devstate() will 995 * trigger a wmi notification and we need to wait 996 * this call to finish before being able to call 997 * any wmi method 998 */ 999 mutex_lock(&asus->wmi_lock); 1000 ret = asus_rfkill_set(data, blocked); 1001 mutex_unlock(&asus->wmi_lock); 1002 return ret; 1003 } 1004 1005 static const struct rfkill_ops asus_rfkill_wlan_ops = { 1006 .set_block = asus_rfkill_wlan_set, 1007 .query = asus_rfkill_query, 1008 }; 1009 1010 static const struct rfkill_ops asus_rfkill_ops = { 1011 .set_block = asus_rfkill_set, 1012 .query = asus_rfkill_query, 1013 }; 1014 1015 static int asus_new_rfkill(struct asus_wmi *asus, 1016 struct asus_rfkill *arfkill, 1017 const char *name, enum rfkill_type type, int dev_id) 1018 { 1019 int result = asus_wmi_get_devstate_simple(asus, dev_id); 1020 struct rfkill **rfkill = &arfkill->rfkill; 1021 1022 if (result < 0) 1023 return result; 1024 1025 arfkill->dev_id = dev_id; 1026 arfkill->asus = asus; 1027 1028 if (dev_id == ASUS_WMI_DEVID_WLAN && 1029 asus->driver->quirks->hotplug_wireless) 1030 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1031 &asus_rfkill_wlan_ops, arfkill); 1032 else 1033 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1034 &asus_rfkill_ops, arfkill); 1035 1036 if (!*rfkill) 1037 return -EINVAL; 1038 1039 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 1040 (asus->driver->quirks->wapf > 0)) 1041 rfkill_set_led_trigger_name(*rfkill, "asus-wlan"); 1042 1043 rfkill_init_sw_state(*rfkill, !result); 1044 result = rfkill_register(*rfkill); 1045 if (result) { 1046 rfkill_destroy(*rfkill); 1047 *rfkill = NULL; 1048 return result; 1049 } 1050 return 0; 1051 } 1052 1053 static void asus_wmi_rfkill_exit(struct asus_wmi *asus) 1054 { 1055 if (asus->driver->wlan_ctrl_by_user && ashs_present()) 1056 return; 1057 1058 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1059 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1060 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1061 if (asus->wlan.rfkill) { 1062 rfkill_unregister(asus->wlan.rfkill); 1063 rfkill_destroy(asus->wlan.rfkill); 1064 asus->wlan.rfkill = NULL; 1065 } 1066 /* 1067 * Refresh pci hotplug in case the rfkill state was changed after 1068 * asus_unregister_rfkill_notifier() 1069 */ 1070 asus_rfkill_hotplug(asus); 1071 if (asus->hotplug_slot.ops) 1072 pci_hp_deregister(&asus->hotplug_slot); 1073 if (asus->hotplug_workqueue) 1074 destroy_workqueue(asus->hotplug_workqueue); 1075 1076 if (asus->bluetooth.rfkill) { 1077 rfkill_unregister(asus->bluetooth.rfkill); 1078 rfkill_destroy(asus->bluetooth.rfkill); 1079 asus->bluetooth.rfkill = NULL; 1080 } 1081 if (asus->wimax.rfkill) { 1082 rfkill_unregister(asus->wimax.rfkill); 1083 rfkill_destroy(asus->wimax.rfkill); 1084 asus->wimax.rfkill = NULL; 1085 } 1086 if (asus->wwan3g.rfkill) { 1087 rfkill_unregister(asus->wwan3g.rfkill); 1088 rfkill_destroy(asus->wwan3g.rfkill); 1089 asus->wwan3g.rfkill = NULL; 1090 } 1091 if (asus->gps.rfkill) { 1092 rfkill_unregister(asus->gps.rfkill); 1093 rfkill_destroy(asus->gps.rfkill); 1094 asus->gps.rfkill = NULL; 1095 } 1096 if (asus->uwb.rfkill) { 1097 rfkill_unregister(asus->uwb.rfkill); 1098 rfkill_destroy(asus->uwb.rfkill); 1099 asus->uwb.rfkill = NULL; 1100 } 1101 } 1102 1103 static int asus_wmi_rfkill_init(struct asus_wmi *asus) 1104 { 1105 int result = 0; 1106 1107 mutex_init(&asus->hotplug_lock); 1108 mutex_init(&asus->wmi_lock); 1109 1110 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan", 1111 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN); 1112 1113 if (result && result != -ENODEV) 1114 goto exit; 1115 1116 result = asus_new_rfkill(asus, &asus->bluetooth, 1117 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH, 1118 ASUS_WMI_DEVID_BLUETOOTH); 1119 1120 if (result && result != -ENODEV) 1121 goto exit; 1122 1123 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax", 1124 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX); 1125 1126 if (result && result != -ENODEV) 1127 goto exit; 1128 1129 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g", 1130 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G); 1131 1132 if (result && result != -ENODEV) 1133 goto exit; 1134 1135 result = asus_new_rfkill(asus, &asus->gps, "asus-gps", 1136 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS); 1137 1138 if (result && result != -ENODEV) 1139 goto exit; 1140 1141 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb", 1142 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB); 1143 1144 if (result && result != -ENODEV) 1145 goto exit; 1146 1147 if (!asus->driver->quirks->hotplug_wireless) 1148 goto exit; 1149 1150 result = asus_setup_pci_hotplug(asus); 1151 /* 1152 * If we get -EBUSY then something else is handling the PCI hotplug - 1153 * don't fail in this case 1154 */ 1155 if (result == -EBUSY) 1156 result = 0; 1157 1158 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1159 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1160 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1161 /* 1162 * Refresh pci hotplug in case the rfkill state was changed during 1163 * setup. 1164 */ 1165 asus_rfkill_hotplug(asus); 1166 1167 exit: 1168 if (result && result != -ENODEV) 1169 asus_wmi_rfkill_exit(asus); 1170 1171 if (result == -ENODEV) 1172 result = 0; 1173 1174 return result; 1175 } 1176 1177 /* Quirks *********************************************************************/ 1178 1179 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus) 1180 { 1181 struct pci_dev *xhci_pdev; 1182 u32 orig_ports_available; 1183 u32 ports_available = asus->driver->quirks->xusb2pr; 1184 1185 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL, 1186 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI, 1187 NULL); 1188 1189 if (!xhci_pdev) 1190 return; 1191 1192 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1193 &orig_ports_available); 1194 1195 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1196 cpu_to_le32(ports_available)); 1197 1198 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n", 1199 orig_ports_available, ports_available); 1200 } 1201 1202 /* 1203 * Some devices dont support or have borcken get_als method 1204 * but still support set method. 1205 */ 1206 static void asus_wmi_set_als(void) 1207 { 1208 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL); 1209 } 1210 1211 /* Hwmon device ***************************************************************/ 1212 1213 static int asus_agfn_fan_speed_read(struct asus_wmi *asus, int fan, 1214 int *speed) 1215 { 1216 struct agfn_fan_args args = { 1217 .agfn.len = sizeof(args), 1218 .agfn.mfun = ASUS_FAN_MFUN, 1219 .agfn.sfun = ASUS_FAN_SFUN_READ, 1220 .fan = fan, 1221 .speed = 0, 1222 }; 1223 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1224 int status; 1225 1226 if (fan != 1) 1227 return -EINVAL; 1228 1229 status = asus_wmi_evaluate_method_agfn(input); 1230 1231 if (status || args.agfn.err) 1232 return -ENXIO; 1233 1234 if (speed) 1235 *speed = args.speed; 1236 1237 return 0; 1238 } 1239 1240 static int asus_agfn_fan_speed_write(struct asus_wmi *asus, int fan, 1241 int *speed) 1242 { 1243 struct agfn_fan_args args = { 1244 .agfn.len = sizeof(args), 1245 .agfn.mfun = ASUS_FAN_MFUN, 1246 .agfn.sfun = ASUS_FAN_SFUN_WRITE, 1247 .fan = fan, 1248 .speed = speed ? *speed : 0, 1249 }; 1250 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1251 int status; 1252 1253 /* 1: for setting 1st fan's speed 0: setting auto mode */ 1254 if (fan != 1 && fan != 0) 1255 return -EINVAL; 1256 1257 status = asus_wmi_evaluate_method_agfn(input); 1258 1259 if (status || args.agfn.err) 1260 return -ENXIO; 1261 1262 if (speed && fan == 1) 1263 asus->agfn_pwm = *speed; 1264 1265 return 0; 1266 } 1267 1268 /* 1269 * Check if we can read the speed of one fan. If true we assume we can also 1270 * control it. 1271 */ 1272 static bool asus_wmi_has_agfn_fan(struct asus_wmi *asus) 1273 { 1274 int status; 1275 int speed; 1276 u32 value; 1277 1278 status = asus_agfn_fan_speed_read(asus, 1, &speed); 1279 if (status != 0) 1280 return false; 1281 1282 status = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value); 1283 if (status != 0) 1284 return false; 1285 1286 /* 1287 * We need to find a better way, probably using sfun, 1288 * bits or spec ... 1289 * Currently we disable it if: 1290 * - ASUS_WMI_UNSUPPORTED_METHOD is returned 1291 * - reverved bits are non-zero 1292 * - sfun and presence bit are not set 1293 */ 1294 return !(value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000 1295 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT))); 1296 } 1297 1298 static int asus_fan_set_auto(struct asus_wmi *asus) 1299 { 1300 int status; 1301 u32 retval; 1302 1303 switch (asus->fan_type) { 1304 case FAN_TYPE_SPEC83: 1305 status = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL, 1306 0, &retval); 1307 if (status) 1308 return status; 1309 1310 if (retval != 1) 1311 return -EIO; 1312 break; 1313 1314 case FAN_TYPE_AGFN: 1315 status = asus_agfn_fan_speed_write(asus, 0, NULL); 1316 if (status) 1317 return -ENXIO; 1318 break; 1319 1320 default: 1321 return -ENXIO; 1322 } 1323 1324 1325 return 0; 1326 } 1327 1328 static ssize_t pwm1_show(struct device *dev, 1329 struct device_attribute *attr, 1330 char *buf) 1331 { 1332 struct asus_wmi *asus = dev_get_drvdata(dev); 1333 int err; 1334 int value; 1335 1336 /* If we already set a value then just return it */ 1337 if (asus->agfn_pwm >= 0) 1338 return sprintf(buf, "%d\n", asus->agfn_pwm); 1339 1340 /* 1341 * If we haven't set already set a value through the AGFN interface, 1342 * we read a current value through the (now-deprecated) FAN_CTRL device. 1343 */ 1344 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value); 1345 if (err < 0) 1346 return err; 1347 1348 value &= 0xFF; 1349 1350 if (value == 1) /* Low Speed */ 1351 value = 85; 1352 else if (value == 2) 1353 value = 170; 1354 else if (value == 3) 1355 value = 255; 1356 else if (value) { 1357 pr_err("Unknown fan speed %#x\n", value); 1358 value = -1; 1359 } 1360 1361 return sprintf(buf, "%d\n", value); 1362 } 1363 1364 static ssize_t pwm1_store(struct device *dev, 1365 struct device_attribute *attr, 1366 const char *buf, size_t count) { 1367 struct asus_wmi *asus = dev_get_drvdata(dev); 1368 int value; 1369 int state; 1370 int ret; 1371 1372 ret = kstrtouint(buf, 10, &value); 1373 if (ret) 1374 return ret; 1375 1376 value = clamp(value, 0, 255); 1377 1378 state = asus_agfn_fan_speed_write(asus, 1, &value); 1379 if (state) 1380 pr_warn("Setting fan speed failed: %d\n", state); 1381 else 1382 asus->fan_pwm_mode = ASUS_FAN_CTRL_MANUAL; 1383 1384 return count; 1385 } 1386 1387 static ssize_t fan1_input_show(struct device *dev, 1388 struct device_attribute *attr, 1389 char *buf) 1390 { 1391 struct asus_wmi *asus = dev_get_drvdata(dev); 1392 int value; 1393 int ret; 1394 1395 switch (asus->fan_type) { 1396 case FAN_TYPE_SPEC83: 1397 ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL, 1398 &value); 1399 if (ret < 0) 1400 return ret; 1401 1402 value &= 0xffff; 1403 break; 1404 1405 case FAN_TYPE_AGFN: 1406 /* no speed readable on manual mode */ 1407 if (asus->fan_pwm_mode == ASUS_FAN_CTRL_MANUAL) 1408 return -ENXIO; 1409 1410 ret = asus_agfn_fan_speed_read(asus, 1, &value); 1411 if (ret) { 1412 pr_warn("reading fan speed failed: %d\n", ret); 1413 return -ENXIO; 1414 } 1415 break; 1416 1417 default: 1418 return -ENXIO; 1419 } 1420 1421 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100); 1422 } 1423 1424 static ssize_t pwm1_enable_show(struct device *dev, 1425 struct device_attribute *attr, 1426 char *buf) 1427 { 1428 struct asus_wmi *asus = dev_get_drvdata(dev); 1429 1430 /* 1431 * Just read back the cached pwm mode. 1432 * 1433 * For the CPU_FAN device, the spec indicates that we should be 1434 * able to read the device status and consult bit 19 to see if we 1435 * are in Full On or Automatic mode. However, this does not work 1436 * in practice on X532FL at least (the bit is always 0) and there's 1437 * also nothing in the DSDT to indicate that this behaviour exists. 1438 */ 1439 return sprintf(buf, "%d\n", asus->fan_pwm_mode); 1440 } 1441 1442 static ssize_t pwm1_enable_store(struct device *dev, 1443 struct device_attribute *attr, 1444 const char *buf, size_t count) 1445 { 1446 struct asus_wmi *asus = dev_get_drvdata(dev); 1447 int status = 0; 1448 int state; 1449 int value; 1450 int ret; 1451 u32 retval; 1452 1453 ret = kstrtouint(buf, 10, &state); 1454 if (ret) 1455 return ret; 1456 1457 if (asus->fan_type == FAN_TYPE_SPEC83) { 1458 switch (state) { /* standard documented hwmon values */ 1459 case ASUS_FAN_CTRL_FULLSPEED: 1460 value = 1; 1461 break; 1462 case ASUS_FAN_CTRL_AUTO: 1463 value = 0; 1464 break; 1465 default: 1466 return -EINVAL; 1467 } 1468 1469 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL, 1470 value, &retval); 1471 if (ret) 1472 return ret; 1473 1474 if (retval != 1) 1475 return -EIO; 1476 } else if (asus->fan_type == FAN_TYPE_AGFN) { 1477 switch (state) { 1478 case ASUS_FAN_CTRL_MANUAL: 1479 break; 1480 1481 case ASUS_FAN_CTRL_AUTO: 1482 status = asus_fan_set_auto(asus); 1483 if (status) 1484 return status; 1485 break; 1486 1487 default: 1488 return -EINVAL; 1489 } 1490 } 1491 1492 asus->fan_pwm_mode = state; 1493 return count; 1494 } 1495 1496 static ssize_t fan1_label_show(struct device *dev, 1497 struct device_attribute *attr, 1498 char *buf) 1499 { 1500 return sprintf(buf, "%s\n", ASUS_FAN_DESC); 1501 } 1502 1503 static ssize_t asus_hwmon_temp1(struct device *dev, 1504 struct device_attribute *attr, 1505 char *buf) 1506 { 1507 struct asus_wmi *asus = dev_get_drvdata(dev); 1508 u32 value; 1509 int err; 1510 1511 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value); 1512 if (err < 0) 1513 return err; 1514 1515 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000; 1516 1517 return sprintf(buf, "%d\n", value); 1518 } 1519 1520 /* Fan1 */ 1521 static DEVICE_ATTR_RW(pwm1); 1522 static DEVICE_ATTR_RW(pwm1_enable); 1523 static DEVICE_ATTR_RO(fan1_input); 1524 static DEVICE_ATTR_RO(fan1_label); 1525 1526 /* Temperature */ 1527 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL); 1528 1529 static struct attribute *hwmon_attributes[] = { 1530 &dev_attr_pwm1.attr, 1531 &dev_attr_pwm1_enable.attr, 1532 &dev_attr_fan1_input.attr, 1533 &dev_attr_fan1_label.attr, 1534 1535 &dev_attr_temp1_input.attr, 1536 NULL 1537 }; 1538 1539 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj, 1540 struct attribute *attr, int idx) 1541 { 1542 struct device *dev = container_of(kobj, struct device, kobj); 1543 struct asus_wmi *asus = dev_get_drvdata(dev->parent); 1544 u32 value = ASUS_WMI_UNSUPPORTED_METHOD; 1545 1546 if (attr == &dev_attr_pwm1.attr) { 1547 if (asus->fan_type != FAN_TYPE_AGFN) 1548 return 0; 1549 } else if (attr == &dev_attr_fan1_input.attr 1550 || attr == &dev_attr_fan1_label.attr 1551 || attr == &dev_attr_pwm1_enable.attr) { 1552 if (asus->fan_type == FAN_TYPE_NONE) 1553 return 0; 1554 } else if (attr == &dev_attr_temp1_input.attr) { 1555 int err = asus_wmi_get_devstate(asus, 1556 ASUS_WMI_DEVID_THERMAL_CTRL, 1557 &value); 1558 1559 if (err < 0) 1560 return 0; /* can't return negative here */ 1561 1562 /* 1563 * If the temperature value in deci-Kelvin is near the absolute 1564 * zero temperature, something is clearly wrong 1565 */ 1566 if (value == 0 || value == 1) 1567 return 0; 1568 } 1569 1570 return attr->mode; 1571 } 1572 1573 static const struct attribute_group hwmon_attribute_group = { 1574 .is_visible = asus_hwmon_sysfs_is_visible, 1575 .attrs = hwmon_attributes 1576 }; 1577 __ATTRIBUTE_GROUPS(hwmon_attribute); 1578 1579 static int asus_wmi_hwmon_init(struct asus_wmi *asus) 1580 { 1581 struct device *dev = &asus->platform_device->dev; 1582 struct device *hwmon; 1583 1584 hwmon = devm_hwmon_device_register_with_groups(dev, "asus", asus, 1585 hwmon_attribute_groups); 1586 1587 if (IS_ERR(hwmon)) { 1588 pr_err("Could not register asus hwmon device\n"); 1589 return PTR_ERR(hwmon); 1590 } 1591 return 0; 1592 } 1593 1594 static int asus_wmi_fan_init(struct asus_wmi *asus) 1595 { 1596 asus->fan_type = FAN_TYPE_NONE; 1597 asus->agfn_pwm = -1; 1598 1599 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL)) 1600 asus->fan_type = FAN_TYPE_SPEC83; 1601 else if (asus_wmi_has_agfn_fan(asus)) 1602 asus->fan_type = FAN_TYPE_AGFN; 1603 1604 if (asus->fan_type == FAN_TYPE_NONE) 1605 return -ENODEV; 1606 1607 asus_fan_set_auto(asus); 1608 asus->fan_pwm_mode = ASUS_FAN_CTRL_AUTO; 1609 return 0; 1610 } 1611 1612 /* Fan mode *******************************************************************/ 1613 1614 static int fan_boost_mode_check_present(struct asus_wmi *asus) 1615 { 1616 u32 result; 1617 int err; 1618 1619 asus->fan_boost_mode_available = false; 1620 1621 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_BOOST_MODE, 1622 &result); 1623 if (err) { 1624 if (err == -ENODEV) 1625 return 0; 1626 else 1627 return err; 1628 } 1629 1630 if ((result & ASUS_WMI_DSTS_PRESENCE_BIT) && 1631 (result & ASUS_FAN_BOOST_MODES_MASK)) { 1632 asus->fan_boost_mode_available = true; 1633 asus->fan_boost_mode_mask = result & ASUS_FAN_BOOST_MODES_MASK; 1634 } 1635 1636 return 0; 1637 } 1638 1639 static int fan_boost_mode_write(struct asus_wmi *asus) 1640 { 1641 int err; 1642 u8 value; 1643 u32 retval; 1644 1645 value = asus->fan_boost_mode; 1646 1647 pr_info("Set fan boost mode: %u\n", value); 1648 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_FAN_BOOST_MODE, value, 1649 &retval); 1650 if (err) { 1651 pr_warn("Failed to set fan boost mode: %d\n", err); 1652 return err; 1653 } 1654 1655 if (retval != 1) { 1656 pr_warn("Failed to set fan boost mode (retval): 0x%x\n", 1657 retval); 1658 return -EIO; 1659 } 1660 1661 return 0; 1662 } 1663 1664 static int fan_boost_mode_switch_next(struct asus_wmi *asus) 1665 { 1666 u8 mask = asus->fan_boost_mode_mask; 1667 1668 if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_NORMAL) { 1669 if (mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK) 1670 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_OVERBOOST; 1671 else if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK) 1672 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT; 1673 } else if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) { 1674 if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK) 1675 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT; 1676 else 1677 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL; 1678 } else { 1679 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL; 1680 } 1681 1682 return fan_boost_mode_write(asus); 1683 } 1684 1685 static ssize_t fan_boost_mode_show(struct device *dev, 1686 struct device_attribute *attr, char *buf) 1687 { 1688 struct asus_wmi *asus = dev_get_drvdata(dev); 1689 1690 return scnprintf(buf, PAGE_SIZE, "%d\n", asus->fan_boost_mode); 1691 } 1692 1693 static ssize_t fan_boost_mode_store(struct device *dev, 1694 struct device_attribute *attr, 1695 const char *buf, size_t count) 1696 { 1697 int result; 1698 u8 new_mode; 1699 struct asus_wmi *asus = dev_get_drvdata(dev); 1700 u8 mask = asus->fan_boost_mode_mask; 1701 1702 result = kstrtou8(buf, 10, &new_mode); 1703 if (result < 0) { 1704 pr_warn("Trying to store invalid value\n"); 1705 return result; 1706 } 1707 1708 if (new_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) { 1709 if (!(mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK)) 1710 return -EINVAL; 1711 } else if (new_mode == ASUS_FAN_BOOST_MODE_SILENT) { 1712 if (!(mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)) 1713 return -EINVAL; 1714 } else if (new_mode != ASUS_FAN_BOOST_MODE_NORMAL) { 1715 return -EINVAL; 1716 } 1717 1718 asus->fan_boost_mode = new_mode; 1719 fan_boost_mode_write(asus); 1720 1721 return result; 1722 } 1723 1724 // Fan boost mode: 0 - normal, 1 - overboost, 2 - silent 1725 static DEVICE_ATTR_RW(fan_boost_mode); 1726 1727 /* Backlight ******************************************************************/ 1728 1729 static int read_backlight_power(struct asus_wmi *asus) 1730 { 1731 int ret; 1732 1733 if (asus->driver->quirks->store_backlight_power) 1734 ret = !asus->driver->panel_power; 1735 else 1736 ret = asus_wmi_get_devstate_simple(asus, 1737 ASUS_WMI_DEVID_BACKLIGHT); 1738 1739 if (ret < 0) 1740 return ret; 1741 1742 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; 1743 } 1744 1745 static int read_brightness_max(struct asus_wmi *asus) 1746 { 1747 u32 retval; 1748 int err; 1749 1750 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1751 if (err < 0) 1752 return err; 1753 1754 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK; 1755 retval >>= 8; 1756 1757 if (!retval) 1758 return -ENODEV; 1759 1760 return retval; 1761 } 1762 1763 static int read_brightness(struct backlight_device *bd) 1764 { 1765 struct asus_wmi *asus = bl_get_data(bd); 1766 u32 retval; 1767 int err; 1768 1769 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1770 if (err < 0) 1771 return err; 1772 1773 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 1774 } 1775 1776 static u32 get_scalar_command(struct backlight_device *bd) 1777 { 1778 struct asus_wmi *asus = bl_get_data(bd); 1779 u32 ctrl_param = 0; 1780 1781 if ((asus->driver->brightness < bd->props.brightness) || 1782 bd->props.brightness == bd->props.max_brightness) 1783 ctrl_param = 0x00008001; 1784 else if ((asus->driver->brightness > bd->props.brightness) || 1785 bd->props.brightness == 0) 1786 ctrl_param = 0x00008000; 1787 1788 asus->driver->brightness = bd->props.brightness; 1789 1790 return ctrl_param; 1791 } 1792 1793 static int update_bl_status(struct backlight_device *bd) 1794 { 1795 struct asus_wmi *asus = bl_get_data(bd); 1796 u32 ctrl_param; 1797 int power, err = 0; 1798 1799 power = read_backlight_power(asus); 1800 if (power != -ENODEV && bd->props.power != power) { 1801 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK); 1802 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 1803 ctrl_param, NULL); 1804 if (asus->driver->quirks->store_backlight_power) 1805 asus->driver->panel_power = bd->props.power; 1806 1807 /* When using scalar brightness, updating the brightness 1808 * will mess with the backlight power */ 1809 if (asus->driver->quirks->scalar_panel_brightness) 1810 return err; 1811 } 1812 1813 if (asus->driver->quirks->scalar_panel_brightness) 1814 ctrl_param = get_scalar_command(bd); 1815 else 1816 ctrl_param = bd->props.brightness; 1817 1818 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS, 1819 ctrl_param, NULL); 1820 1821 return err; 1822 } 1823 1824 static const struct backlight_ops asus_wmi_bl_ops = { 1825 .get_brightness = read_brightness, 1826 .update_status = update_bl_status, 1827 }; 1828 1829 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code) 1830 { 1831 struct backlight_device *bd = asus->backlight_device; 1832 int old = bd->props.brightness; 1833 int new = old; 1834 1835 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1836 new = code - NOTIFY_BRNUP_MIN + 1; 1837 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 1838 new = code - NOTIFY_BRNDOWN_MIN; 1839 1840 bd->props.brightness = new; 1841 backlight_update_status(bd); 1842 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 1843 1844 return old; 1845 } 1846 1847 static int asus_wmi_backlight_init(struct asus_wmi *asus) 1848 { 1849 struct backlight_device *bd; 1850 struct backlight_properties props; 1851 int max; 1852 int power; 1853 1854 max = read_brightness_max(asus); 1855 if (max < 0) 1856 return max; 1857 1858 power = read_backlight_power(asus); 1859 if (power == -ENODEV) 1860 power = FB_BLANK_UNBLANK; 1861 else if (power < 0) 1862 return power; 1863 1864 memset(&props, 0, sizeof(struct backlight_properties)); 1865 props.type = BACKLIGHT_PLATFORM; 1866 props.max_brightness = max; 1867 bd = backlight_device_register(asus->driver->name, 1868 &asus->platform_device->dev, asus, 1869 &asus_wmi_bl_ops, &props); 1870 if (IS_ERR(bd)) { 1871 pr_err("Could not register backlight device\n"); 1872 return PTR_ERR(bd); 1873 } 1874 1875 asus->backlight_device = bd; 1876 1877 if (asus->driver->quirks->store_backlight_power) 1878 asus->driver->panel_power = power; 1879 1880 bd->props.brightness = read_brightness(bd); 1881 bd->props.power = power; 1882 backlight_update_status(bd); 1883 1884 asus->driver->brightness = bd->props.brightness; 1885 1886 return 0; 1887 } 1888 1889 static void asus_wmi_backlight_exit(struct asus_wmi *asus) 1890 { 1891 backlight_device_unregister(asus->backlight_device); 1892 1893 asus->backlight_device = NULL; 1894 } 1895 1896 static int is_display_toggle(int code) 1897 { 1898 /* display toggle keys */ 1899 if ((code >= 0x61 && code <= 0x67) || 1900 (code >= 0x8c && code <= 0x93) || 1901 (code >= 0xa0 && code <= 0xa7) || 1902 (code >= 0xd0 && code <= 0xd5)) 1903 return 1; 1904 1905 return 0; 1906 } 1907 1908 /* Fn-lock ********************************************************************/ 1909 1910 static bool asus_wmi_has_fnlock_key(struct asus_wmi *asus) 1911 { 1912 u32 result; 1913 1914 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FNLOCK, &result); 1915 1916 return (result & ASUS_WMI_DSTS_PRESENCE_BIT) && 1917 !(result & ASUS_WMI_FNLOCK_BIOS_DISABLED); 1918 } 1919 1920 static void asus_wmi_fnlock_update(struct asus_wmi *asus) 1921 { 1922 int mode = asus->fnlock_locked; 1923 1924 asus_wmi_set_devstate(ASUS_WMI_DEVID_FNLOCK, mode, NULL); 1925 } 1926 1927 /* WMI events *****************************************************************/ 1928 1929 static int asus_wmi_get_event_code(u32 value) 1930 { 1931 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 1932 union acpi_object *obj; 1933 acpi_status status; 1934 int code; 1935 1936 status = wmi_get_event_data(value, &response); 1937 if (ACPI_FAILURE(status)) { 1938 pr_warn("Failed to get WMI notify code: %s\n", 1939 acpi_format_exception(status)); 1940 return -EIO; 1941 } 1942 1943 obj = (union acpi_object *)response.pointer; 1944 1945 if (obj && obj->type == ACPI_TYPE_INTEGER) 1946 code = (int)(obj->integer.value & WMI_EVENT_MASK); 1947 else 1948 code = -EIO; 1949 1950 kfree(obj); 1951 return code; 1952 } 1953 1954 static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus) 1955 { 1956 int orig_code; 1957 unsigned int key_value = 1; 1958 bool autorelease = 1; 1959 1960 orig_code = code; 1961 1962 if (asus->driver->key_filter) { 1963 asus->driver->key_filter(asus->driver, &code, &key_value, 1964 &autorelease); 1965 if (code == ASUS_WMI_KEY_IGNORE) 1966 return; 1967 } 1968 1969 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1970 code = ASUS_WMI_BRN_UP; 1971 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 1972 code = ASUS_WMI_BRN_DOWN; 1973 1974 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) { 1975 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 1976 asus_wmi_backlight_notify(asus, orig_code); 1977 return; 1978 } 1979 } 1980 1981 if (code == NOTIFY_KBD_BRTUP) { 1982 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1); 1983 return; 1984 } 1985 if (code == NOTIFY_KBD_BRTDWN) { 1986 kbd_led_set_by_kbd(asus, asus->kbd_led_wk - 1); 1987 return; 1988 } 1989 if (code == NOTIFY_KBD_BRTTOGGLE) { 1990 if (asus->kbd_led_wk == asus->kbd_led.max_brightness) 1991 kbd_led_set_by_kbd(asus, 0); 1992 else 1993 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1); 1994 return; 1995 } 1996 1997 if (code == NOTIFY_FNLOCK_TOGGLE) { 1998 asus->fnlock_locked = !asus->fnlock_locked; 1999 asus_wmi_fnlock_update(asus); 2000 return; 2001 } 2002 2003 if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) { 2004 fan_boost_mode_switch_next(asus); 2005 return; 2006 } 2007 2008 if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle) 2009 return; 2010 2011 if (!sparse_keymap_report_event(asus->inputdev, code, 2012 key_value, autorelease)) 2013 pr_info("Unknown key %x pressed\n", code); 2014 } 2015 2016 static void asus_wmi_notify(u32 value, void *context) 2017 { 2018 struct asus_wmi *asus = context; 2019 int code; 2020 int i; 2021 2022 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) { 2023 code = asus_wmi_get_event_code(value); 2024 if (code < 0) { 2025 pr_warn("Failed to get notify code: %d\n", code); 2026 return; 2027 } 2028 2029 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK) 2030 return; 2031 2032 asus_wmi_handle_event_code(code, asus); 2033 2034 /* 2035 * Double check that queue is present: 2036 * ATK (with queue) uses 0xff, ASUSWMI (without) 0xd2. 2037 */ 2038 if (!asus->wmi_event_queue || value != WMI_EVENT_VALUE_ATK) 2039 return; 2040 } 2041 2042 pr_warn("Failed to process event queue, last code: 0x%x\n", code); 2043 } 2044 2045 static int asus_wmi_notify_queue_flush(struct asus_wmi *asus) 2046 { 2047 int code; 2048 int i; 2049 2050 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) { 2051 code = asus_wmi_get_event_code(WMI_EVENT_VALUE_ATK); 2052 if (code < 0) { 2053 pr_warn("Failed to get event during flush: %d\n", code); 2054 return code; 2055 } 2056 2057 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK) 2058 return 0; 2059 } 2060 2061 pr_warn("Failed to flush event queue\n"); 2062 return -EIO; 2063 } 2064 2065 /* Sysfs **********************************************************************/ 2066 2067 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid, 2068 const char *buf, size_t count) 2069 { 2070 u32 retval; 2071 int err, value; 2072 2073 value = asus_wmi_get_devstate_simple(asus, devid); 2074 if (value < 0) 2075 return value; 2076 2077 err = kstrtoint(buf, 0, &value); 2078 if (err) 2079 return err; 2080 2081 err = asus_wmi_set_devstate(devid, value, &retval); 2082 if (err < 0) 2083 return err; 2084 2085 return count; 2086 } 2087 2088 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf) 2089 { 2090 int value = asus_wmi_get_devstate_simple(asus, devid); 2091 2092 if (value < 0) 2093 return value; 2094 2095 return sprintf(buf, "%d\n", value); 2096 } 2097 2098 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ 2099 static ssize_t show_##_name(struct device *dev, \ 2100 struct device_attribute *attr, \ 2101 char *buf) \ 2102 { \ 2103 struct asus_wmi *asus = dev_get_drvdata(dev); \ 2104 \ 2105 return show_sys_wmi(asus, _cm, buf); \ 2106 } \ 2107 static ssize_t store_##_name(struct device *dev, \ 2108 struct device_attribute *attr, \ 2109 const char *buf, size_t count) \ 2110 { \ 2111 struct asus_wmi *asus = dev_get_drvdata(dev); \ 2112 \ 2113 return store_sys_wmi(asus, _cm, buf, count); \ 2114 } \ 2115 static struct device_attribute dev_attr_##_name = { \ 2116 .attr = { \ 2117 .name = __stringify(_name), \ 2118 .mode = _mode }, \ 2119 .show = show_##_name, \ 2120 .store = store_##_name, \ 2121 } 2122 2123 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD); 2124 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA); 2125 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER); 2126 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME); 2127 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE); 2128 2129 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr, 2130 const char *buf, size_t count) 2131 { 2132 int value, rv; 2133 2134 rv = kstrtoint(buf, 0, &value); 2135 if (rv) 2136 return rv; 2137 2138 if (value < 0 || value > 2) 2139 return -EINVAL; 2140 2141 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL); 2142 if (rv < 0) 2143 return rv; 2144 2145 return count; 2146 } 2147 2148 static DEVICE_ATTR_WO(cpufv); 2149 2150 static struct attribute *platform_attributes[] = { 2151 &dev_attr_cpufv.attr, 2152 &dev_attr_camera.attr, 2153 &dev_attr_cardr.attr, 2154 &dev_attr_touchpad.attr, 2155 &dev_attr_lid_resume.attr, 2156 &dev_attr_als_enable.attr, 2157 &dev_attr_fan_boost_mode.attr, 2158 NULL 2159 }; 2160 2161 static umode_t asus_sysfs_is_visible(struct kobject *kobj, 2162 struct attribute *attr, int idx) 2163 { 2164 struct device *dev = container_of(kobj, struct device, kobj); 2165 struct asus_wmi *asus = dev_get_drvdata(dev); 2166 bool ok = true; 2167 int devid = -1; 2168 2169 if (attr == &dev_attr_camera.attr) 2170 devid = ASUS_WMI_DEVID_CAMERA; 2171 else if (attr == &dev_attr_cardr.attr) 2172 devid = ASUS_WMI_DEVID_CARDREADER; 2173 else if (attr == &dev_attr_touchpad.attr) 2174 devid = ASUS_WMI_DEVID_TOUCHPAD; 2175 else if (attr == &dev_attr_lid_resume.attr) 2176 devid = ASUS_WMI_DEVID_LID_RESUME; 2177 else if (attr == &dev_attr_als_enable.attr) 2178 devid = ASUS_WMI_DEVID_ALS_ENABLE; 2179 else if (attr == &dev_attr_fan_boost_mode.attr) 2180 ok = asus->fan_boost_mode_available; 2181 2182 if (devid != -1) 2183 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0); 2184 2185 return ok ? attr->mode : 0; 2186 } 2187 2188 static const struct attribute_group platform_attribute_group = { 2189 .is_visible = asus_sysfs_is_visible, 2190 .attrs = platform_attributes 2191 }; 2192 2193 static void asus_wmi_sysfs_exit(struct platform_device *device) 2194 { 2195 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); 2196 } 2197 2198 static int asus_wmi_sysfs_init(struct platform_device *device) 2199 { 2200 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); 2201 } 2202 2203 /* Platform device ************************************************************/ 2204 2205 static int asus_wmi_platform_init(struct asus_wmi *asus) 2206 { 2207 struct device *dev = &asus->platform_device->dev; 2208 char *wmi_uid; 2209 int rv; 2210 2211 /* INIT enable hotkeys on some models */ 2212 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv)) 2213 pr_info("Initialization: %#x\n", rv); 2214 2215 /* We don't know yet what to do with this version... */ 2216 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) { 2217 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF); 2218 asus->spec = rv; 2219 } 2220 2221 /* 2222 * The SFUN method probably allows the original driver to get the list 2223 * of features supported by a given model. For now, 0x0100 or 0x0800 2224 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 2225 * The significance of others is yet to be found. 2226 */ 2227 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) { 2228 pr_info("SFUN value: %#x\n", rv); 2229 asus->sfun = rv; 2230 } 2231 2232 /* 2233 * Eee PC and Notebooks seems to have different method_id for DSTS, 2234 * but it may also be related to the BIOS's SPEC. 2235 * Note, on most Eeepc, there is no way to check if a method exist 2236 * or note, while on notebooks, they returns 0xFFFFFFFE on failure, 2237 * but once again, SPEC may probably be used for that kind of things. 2238 * 2239 * Additionally at least TUF Gaming series laptops return nothing for 2240 * unknown methods, so the detection in this way is not possible. 2241 * 2242 * There is strong indication that only ACPI WMI devices that have _UID 2243 * equal to "ASUSWMI" use DCTS whereas those with "ATK" use DSTS. 2244 */ 2245 wmi_uid = wmi_get_acpi_device_uid(ASUS_WMI_MGMT_GUID); 2246 if (!wmi_uid) 2247 return -ENODEV; 2248 2249 if (!strcmp(wmi_uid, ASUS_ACPI_UID_ASUSWMI)) { 2250 dev_info(dev, "Detected ASUSWMI, use DCTS\n"); 2251 asus->dsts_id = ASUS_WMI_METHODID_DCTS; 2252 } else { 2253 dev_info(dev, "Detected %s, not ASUSWMI, use DSTS\n", wmi_uid); 2254 asus->dsts_id = ASUS_WMI_METHODID_DSTS; 2255 } 2256 2257 /* 2258 * Some devices can have multiple event codes stored in a queue before 2259 * the module load if it was unloaded intermittently after calling 2260 * the INIT method (enables event handling). The WMI notify handler is 2261 * expected to retrieve all event codes until a retrieved code equals 2262 * queue end marker (One or Ones). Old codes are flushed from the queue 2263 * upon module load. Not enabling this when it should be has minimal 2264 * visible impact so fall back if anything goes wrong. 2265 */ 2266 wmi_uid = wmi_get_acpi_device_uid(asus->driver->event_guid); 2267 if (wmi_uid && !strcmp(wmi_uid, ASUS_ACPI_UID_ATK)) { 2268 dev_info(dev, "Detected ATK, enable event queue\n"); 2269 2270 if (!asus_wmi_notify_queue_flush(asus)) 2271 asus->wmi_event_queue = true; 2272 } 2273 2274 /* CWAP allow to define the behavior of the Fn+F2 key, 2275 * this method doesn't seems to be present on Eee PCs */ 2276 if (asus->driver->quirks->wapf >= 0) 2277 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP, 2278 asus->driver->quirks->wapf, NULL); 2279 2280 return 0; 2281 } 2282 2283 /* debugfs ********************************************************************/ 2284 2285 struct asus_wmi_debugfs_node { 2286 struct asus_wmi *asus; 2287 char *name; 2288 int (*show) (struct seq_file *m, void *data); 2289 }; 2290 2291 static int show_dsts(struct seq_file *m, void *data) 2292 { 2293 struct asus_wmi *asus = m->private; 2294 int err; 2295 u32 retval = -1; 2296 2297 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval); 2298 if (err < 0) 2299 return err; 2300 2301 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval); 2302 2303 return 0; 2304 } 2305 2306 static int show_devs(struct seq_file *m, void *data) 2307 { 2308 struct asus_wmi *asus = m->private; 2309 int err; 2310 u32 retval = -1; 2311 2312 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param, 2313 &retval); 2314 if (err < 0) 2315 return err; 2316 2317 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id, 2318 asus->debug.ctrl_param, retval); 2319 2320 return 0; 2321 } 2322 2323 static int show_call(struct seq_file *m, void *data) 2324 { 2325 struct asus_wmi *asus = m->private; 2326 struct bios_args args = { 2327 .arg0 = asus->debug.dev_id, 2328 .arg1 = asus->debug.ctrl_param, 2329 }; 2330 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 2331 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 2332 union acpi_object *obj; 2333 acpi_status status; 2334 2335 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 2336 0, asus->debug.method_id, 2337 &input, &output); 2338 2339 if (ACPI_FAILURE(status)) 2340 return -EIO; 2341 2342 obj = (union acpi_object *)output.pointer; 2343 if (obj && obj->type == ACPI_TYPE_INTEGER) 2344 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id, 2345 asus->debug.dev_id, asus->debug.ctrl_param, 2346 (u32) obj->integer.value); 2347 else 2348 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id, 2349 asus->debug.dev_id, asus->debug.ctrl_param, 2350 obj ? obj->type : -1); 2351 2352 kfree(obj); 2353 2354 return 0; 2355 } 2356 2357 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = { 2358 {NULL, "devs", show_devs}, 2359 {NULL, "dsts", show_dsts}, 2360 {NULL, "call", show_call}, 2361 }; 2362 2363 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file) 2364 { 2365 struct asus_wmi_debugfs_node *node = inode->i_private; 2366 2367 return single_open(file, node->show, node->asus); 2368 } 2369 2370 static const struct file_operations asus_wmi_debugfs_io_ops = { 2371 .owner = THIS_MODULE, 2372 .open = asus_wmi_debugfs_open, 2373 .read = seq_read, 2374 .llseek = seq_lseek, 2375 .release = single_release, 2376 }; 2377 2378 static void asus_wmi_debugfs_exit(struct asus_wmi *asus) 2379 { 2380 debugfs_remove_recursive(asus->debug.root); 2381 } 2382 2383 static void asus_wmi_debugfs_init(struct asus_wmi *asus) 2384 { 2385 int i; 2386 2387 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL); 2388 2389 debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, asus->debug.root, 2390 &asus->debug.method_id); 2391 2392 debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, asus->debug.root, 2393 &asus->debug.dev_id); 2394 2395 debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, asus->debug.root, 2396 &asus->debug.ctrl_param); 2397 2398 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) { 2399 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i]; 2400 2401 node->asus = asus; 2402 debugfs_create_file(node->name, S_IFREG | S_IRUGO, 2403 asus->debug.root, node, 2404 &asus_wmi_debugfs_io_ops); 2405 } 2406 } 2407 2408 /* Init / exit ****************************************************************/ 2409 2410 static int asus_wmi_add(struct platform_device *pdev) 2411 { 2412 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2413 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2414 struct asus_wmi *asus; 2415 const char *chassis_type; 2416 acpi_status status; 2417 int err; 2418 u32 result; 2419 2420 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL); 2421 if (!asus) 2422 return -ENOMEM; 2423 2424 asus->driver = wdrv; 2425 asus->platform_device = pdev; 2426 wdrv->platform_device = pdev; 2427 platform_set_drvdata(asus->platform_device, asus); 2428 2429 if (wdrv->detect_quirks) 2430 wdrv->detect_quirks(asus->driver); 2431 2432 err = asus_wmi_platform_init(asus); 2433 if (err) 2434 goto fail_platform; 2435 2436 err = fan_boost_mode_check_present(asus); 2437 if (err) 2438 goto fail_fan_boost_mode; 2439 2440 err = asus_wmi_sysfs_init(asus->platform_device); 2441 if (err) 2442 goto fail_sysfs; 2443 2444 err = asus_wmi_input_init(asus); 2445 if (err) 2446 goto fail_input; 2447 2448 err = asus_wmi_fan_init(asus); /* probably no problems on error */ 2449 2450 err = asus_wmi_hwmon_init(asus); 2451 if (err) 2452 goto fail_hwmon; 2453 2454 err = asus_wmi_led_init(asus); 2455 if (err) 2456 goto fail_leds; 2457 2458 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result); 2459 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT)) 2460 asus->driver->wlan_ctrl_by_user = 1; 2461 2462 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) { 2463 err = asus_wmi_rfkill_init(asus); 2464 if (err) 2465 goto fail_rfkill; 2466 } 2467 2468 if (asus->driver->quirks->wmi_force_als_set) 2469 asus_wmi_set_als(); 2470 2471 /* Some Asus desktop boards export an acpi-video backlight interface, 2472 stop this from showing up */ 2473 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); 2474 if (chassis_type && !strcmp(chassis_type, "3")) 2475 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2476 2477 if (asus->driver->quirks->wmi_backlight_power) 2478 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2479 2480 if (asus->driver->quirks->wmi_backlight_native) 2481 acpi_video_set_dmi_backlight_type(acpi_backlight_native); 2482 2483 if (asus->driver->quirks->xusb2pr) 2484 asus_wmi_set_xusb2pr(asus); 2485 2486 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 2487 err = asus_wmi_backlight_init(asus); 2488 if (err && err != -ENODEV) 2489 goto fail_backlight; 2490 } else if (asus->driver->quirks->wmi_backlight_set_devstate) 2491 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL); 2492 2493 if (asus_wmi_has_fnlock_key(asus)) { 2494 asus->fnlock_locked = true; 2495 asus_wmi_fnlock_update(asus); 2496 } 2497 2498 status = wmi_install_notify_handler(asus->driver->event_guid, 2499 asus_wmi_notify, asus); 2500 if (ACPI_FAILURE(status)) { 2501 pr_err("Unable to register notify handler - %d\n", status); 2502 err = -ENODEV; 2503 goto fail_wmi_handler; 2504 } 2505 2506 asus_wmi_battery_init(asus); 2507 2508 asus_wmi_debugfs_init(asus); 2509 2510 return 0; 2511 2512 fail_wmi_handler: 2513 asus_wmi_backlight_exit(asus); 2514 fail_backlight: 2515 asus_wmi_rfkill_exit(asus); 2516 fail_rfkill: 2517 asus_wmi_led_exit(asus); 2518 fail_leds: 2519 fail_hwmon: 2520 asus_wmi_input_exit(asus); 2521 fail_input: 2522 asus_wmi_sysfs_exit(asus->platform_device); 2523 fail_sysfs: 2524 fail_fan_boost_mode: 2525 fail_platform: 2526 kfree(asus); 2527 return err; 2528 } 2529 2530 static int asus_wmi_remove(struct platform_device *device) 2531 { 2532 struct asus_wmi *asus; 2533 2534 asus = platform_get_drvdata(device); 2535 wmi_remove_notify_handler(asus->driver->event_guid); 2536 asus_wmi_backlight_exit(asus); 2537 asus_wmi_input_exit(asus); 2538 asus_wmi_led_exit(asus); 2539 asus_wmi_rfkill_exit(asus); 2540 asus_wmi_debugfs_exit(asus); 2541 asus_wmi_sysfs_exit(asus->platform_device); 2542 asus_fan_set_auto(asus); 2543 asus_wmi_battery_exit(asus); 2544 2545 kfree(asus); 2546 return 0; 2547 } 2548 2549 /* Platform driver - hibernate/resume callbacks *******************************/ 2550 2551 static int asus_hotk_thaw(struct device *device) 2552 { 2553 struct asus_wmi *asus = dev_get_drvdata(device); 2554 2555 if (asus->wlan.rfkill) { 2556 bool wlan; 2557 2558 /* 2559 * Work around bios bug - acpi _PTS turns off the wireless led 2560 * during suspend. Normally it restores it on resume, but 2561 * we should kick it ourselves in case hibernation is aborted. 2562 */ 2563 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 2564 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL); 2565 } 2566 2567 return 0; 2568 } 2569 2570 static int asus_hotk_resume(struct device *device) 2571 { 2572 struct asus_wmi *asus = dev_get_drvdata(device); 2573 2574 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2575 kbd_led_update(asus); 2576 2577 if (asus_wmi_has_fnlock_key(asus)) 2578 asus_wmi_fnlock_update(asus); 2579 return 0; 2580 } 2581 2582 static int asus_hotk_restore(struct device *device) 2583 { 2584 struct asus_wmi *asus = dev_get_drvdata(device); 2585 int bl; 2586 2587 /* Refresh both wlan rfkill state and pci hotplug */ 2588 if (asus->wlan.rfkill) 2589 asus_rfkill_hotplug(asus); 2590 2591 if (asus->bluetooth.rfkill) { 2592 bl = !asus_wmi_get_devstate_simple(asus, 2593 ASUS_WMI_DEVID_BLUETOOTH); 2594 rfkill_set_sw_state(asus->bluetooth.rfkill, bl); 2595 } 2596 if (asus->wimax.rfkill) { 2597 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX); 2598 rfkill_set_sw_state(asus->wimax.rfkill, bl); 2599 } 2600 if (asus->wwan3g.rfkill) { 2601 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G); 2602 rfkill_set_sw_state(asus->wwan3g.rfkill, bl); 2603 } 2604 if (asus->gps.rfkill) { 2605 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS); 2606 rfkill_set_sw_state(asus->gps.rfkill, bl); 2607 } 2608 if (asus->uwb.rfkill) { 2609 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB); 2610 rfkill_set_sw_state(asus->uwb.rfkill, bl); 2611 } 2612 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2613 kbd_led_update(asus); 2614 2615 if (asus_wmi_has_fnlock_key(asus)) 2616 asus_wmi_fnlock_update(asus); 2617 return 0; 2618 } 2619 2620 static const struct dev_pm_ops asus_pm_ops = { 2621 .thaw = asus_hotk_thaw, 2622 .restore = asus_hotk_restore, 2623 .resume = asus_hotk_resume, 2624 }; 2625 2626 /* Registration ***************************************************************/ 2627 2628 static int asus_wmi_probe(struct platform_device *pdev) 2629 { 2630 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2631 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2632 int ret; 2633 2634 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 2635 pr_warn("ASUS Management GUID not found\n"); 2636 return -ENODEV; 2637 } 2638 2639 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) { 2640 pr_warn("ASUS Event GUID not found\n"); 2641 return -ENODEV; 2642 } 2643 2644 if (wdrv->probe) { 2645 ret = wdrv->probe(pdev); 2646 if (ret) 2647 return ret; 2648 } 2649 2650 return asus_wmi_add(pdev); 2651 } 2652 2653 static bool used; 2654 2655 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver) 2656 { 2657 struct platform_driver *platform_driver; 2658 struct platform_device *platform_device; 2659 2660 if (used) 2661 return -EBUSY; 2662 2663 platform_driver = &driver->platform_driver; 2664 platform_driver->remove = asus_wmi_remove; 2665 platform_driver->driver.owner = driver->owner; 2666 platform_driver->driver.name = driver->name; 2667 platform_driver->driver.pm = &asus_pm_ops; 2668 2669 platform_device = platform_create_bundle(platform_driver, 2670 asus_wmi_probe, 2671 NULL, 0, NULL, 0); 2672 if (IS_ERR(platform_device)) 2673 return PTR_ERR(platform_device); 2674 2675 used = true; 2676 return 0; 2677 } 2678 EXPORT_SYMBOL_GPL(asus_wmi_register_driver); 2679 2680 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver) 2681 { 2682 platform_device_unregister(driver->platform_device); 2683 platform_driver_unregister(&driver->platform_driver); 2684 used = false; 2685 } 2686 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver); 2687 2688 static int __init asus_wmi_init(void) 2689 { 2690 pr_info("ASUS WMI generic driver loaded\n"); 2691 return 0; 2692 } 2693 2694 static void __exit asus_wmi_exit(void) 2695 { 2696 pr_info("ASUS WMI generic driver unloaded\n"); 2697 } 2698 2699 module_init(asus_wmi_init); 2700 module_exit(asus_wmi_exit); 2701