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/acpi.h> 37 #include <linux/dmi.h> 38 #include <linux/units.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_DOCK_CHANGE 0x75 61 #define NOTIFY_KBD_BRTUP 0xc4 62 #define NOTIFY_KBD_BRTDWN 0xc5 63 #define NOTIFY_KBD_BRTTOGGLE 0xc7 64 #define NOTIFY_KBD_FBM 0x99 65 #define NOTIFY_KBD_TTP 0xae 66 67 #define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0) 68 69 #define ASUS_FAN_DESC "cpu_fan" 70 #define ASUS_FAN_MFUN 0x13 71 #define ASUS_FAN_SFUN_READ 0x06 72 #define ASUS_FAN_SFUN_WRITE 0x07 73 74 /* Based on standard hwmon pwmX_enable values */ 75 #define ASUS_FAN_CTRL_FULLSPEED 0 76 #define ASUS_FAN_CTRL_MANUAL 1 77 #define ASUS_FAN_CTRL_AUTO 2 78 79 #define ASUS_FAN_BOOST_MODE_NORMAL 0 80 #define ASUS_FAN_BOOST_MODE_OVERBOOST 1 81 #define ASUS_FAN_BOOST_MODE_OVERBOOST_MASK 0x01 82 #define ASUS_FAN_BOOST_MODE_SILENT 2 83 #define ASUS_FAN_BOOST_MODE_SILENT_MASK 0x02 84 #define ASUS_FAN_BOOST_MODES_MASK 0x03 85 86 #define ASUS_THROTTLE_THERMAL_POLICY_DEFAULT 0 87 #define ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST 1 88 #define ASUS_THROTTLE_THERMAL_POLICY_SILENT 2 89 90 #define USB_INTEL_XUSB2PR 0xD0 91 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31 92 93 #define ASUS_ACPI_UID_ASUSWMI "ASUSWMI" 94 #define ASUS_ACPI_UID_ATK "ATK" 95 96 #define WMI_EVENT_QUEUE_SIZE 0x10 97 #define WMI_EVENT_QUEUE_END 0x1 98 #define WMI_EVENT_MASK 0xFFFF 99 /* The WMI hotkey event value is always the same. */ 100 #define WMI_EVENT_VALUE_ATK 0xFF 101 102 #define WMI_EVENT_MASK 0xFFFF 103 104 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL }; 105 106 static bool ashs_present(void) 107 { 108 int i = 0; 109 while (ashs_ids[i]) { 110 if (acpi_dev_found(ashs_ids[i++])) 111 return true; 112 } 113 return false; 114 } 115 116 struct bios_args { 117 u32 arg0; 118 u32 arg1; 119 u32 arg2; /* At least TUF Gaming series uses 3 dword input buffer. */ 120 u32 arg4; 121 u32 arg5; 122 } __packed; 123 124 /* 125 * Struct that's used for all methods called via AGFN. Naming is 126 * identically to the AML code. 127 */ 128 struct agfn_args { 129 u16 mfun; /* probably "Multi-function" to be called */ 130 u16 sfun; /* probably "Sub-function" to be called */ 131 u16 len; /* size of the hole struct, including subfunction fields */ 132 u8 stas; /* not used by now */ 133 u8 err; /* zero on success */ 134 } __packed; 135 136 /* struct used for calling fan read and write methods */ 137 struct agfn_fan_args { 138 struct agfn_args agfn; /* common fields */ 139 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */ 140 u32 speed; /* read: RPM/100 - write: 0-255 */ 141 } __packed; 142 143 /* 144 * <platform>/ - debugfs root directory 145 * dev_id - current dev_id 146 * ctrl_param - current ctrl_param 147 * method_id - current method_id 148 * devs - call DEVS(dev_id, ctrl_param) and print result 149 * dsts - call DSTS(dev_id) and print result 150 * call - call method_id(dev_id, ctrl_param) and print result 151 */ 152 struct asus_wmi_debug { 153 struct dentry *root; 154 u32 method_id; 155 u32 dev_id; 156 u32 ctrl_param; 157 }; 158 159 struct asus_rfkill { 160 struct asus_wmi *asus; 161 struct rfkill *rfkill; 162 u32 dev_id; 163 }; 164 165 enum fan_type { 166 FAN_TYPE_NONE = 0, 167 FAN_TYPE_AGFN, /* deprecated on newer platforms */ 168 FAN_TYPE_SPEC83, /* starting in Spec 8.3, use CPU_FAN_CTRL */ 169 }; 170 171 struct asus_wmi { 172 int dsts_id; 173 int spec; 174 int sfun; 175 bool wmi_event_queue; 176 177 struct input_dev *inputdev; 178 struct backlight_device *backlight_device; 179 struct platform_device *platform_device; 180 181 struct led_classdev wlan_led; 182 int wlan_led_wk; 183 struct led_classdev tpd_led; 184 int tpd_led_wk; 185 struct led_classdev kbd_led; 186 int kbd_led_wk; 187 struct led_classdev lightbar_led; 188 int lightbar_led_wk; 189 struct workqueue_struct *led_workqueue; 190 struct work_struct tpd_led_work; 191 struct work_struct wlan_led_work; 192 struct work_struct lightbar_led_work; 193 194 struct asus_rfkill wlan; 195 struct asus_rfkill bluetooth; 196 struct asus_rfkill wimax; 197 struct asus_rfkill wwan3g; 198 struct asus_rfkill gps; 199 struct asus_rfkill uwb; 200 201 enum fan_type fan_type; 202 int fan_pwm_mode; 203 int agfn_pwm; 204 205 bool fan_boost_mode_available; 206 u8 fan_boost_mode_mask; 207 u8 fan_boost_mode; 208 209 bool throttle_thermal_policy_available; 210 u8 throttle_thermal_policy_mode; 211 212 // The RSOC controls the maximum charging percentage. 213 bool battery_rsoc_available; 214 215 struct hotplug_slot hotplug_slot; 216 struct mutex hotplug_lock; 217 struct mutex wmi_lock; 218 struct workqueue_struct *hotplug_workqueue; 219 struct work_struct hotplug_work; 220 221 bool fnlock_locked; 222 223 struct asus_wmi_debug debug; 224 225 struct asus_wmi_driver *driver; 226 }; 227 228 /* WMI ************************************************************************/ 229 230 static int asus_wmi_evaluate_method3(u32 method_id, 231 u32 arg0, u32 arg1, u32 arg2, u32 *retval) 232 { 233 struct bios_args args = { 234 .arg0 = arg0, 235 .arg1 = arg1, 236 .arg2 = arg2, 237 }; 238 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 239 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 240 acpi_status status; 241 union acpi_object *obj; 242 u32 tmp = 0; 243 244 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id, 245 &input, &output); 246 247 if (ACPI_FAILURE(status)) 248 return -EIO; 249 250 obj = (union acpi_object *)output.pointer; 251 if (obj && obj->type == ACPI_TYPE_INTEGER) 252 tmp = (u32) obj->integer.value; 253 254 if (retval) 255 *retval = tmp; 256 257 kfree(obj); 258 259 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD) 260 return -ENODEV; 261 262 return 0; 263 } 264 265 int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval) 266 { 267 return asus_wmi_evaluate_method3(method_id, arg0, arg1, 0, retval); 268 } 269 EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method); 270 271 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args) 272 { 273 struct acpi_buffer input; 274 u64 phys_addr; 275 u32 retval; 276 u32 status; 277 278 /* 279 * Copy to dma capable address otherwise memory corruption occurs as 280 * bios has to be able to access it. 281 */ 282 input.pointer = kmemdup(args.pointer, args.length, GFP_DMA | GFP_KERNEL); 283 input.length = args.length; 284 if (!input.pointer) 285 return -ENOMEM; 286 phys_addr = virt_to_phys(input.pointer); 287 288 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN, 289 phys_addr, 0, &retval); 290 if (!status) 291 memcpy(args.pointer, input.pointer, args.length); 292 293 kfree(input.pointer); 294 if (status) 295 return -ENXIO; 296 297 return retval; 298 } 299 300 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval) 301 { 302 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval); 303 } 304 305 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, 306 u32 *retval) 307 { 308 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id, 309 ctrl_param, retval); 310 } 311 312 /* Helper for special devices with magic return codes */ 313 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus, 314 u32 dev_id, u32 mask) 315 { 316 u32 retval = 0; 317 int err; 318 319 err = asus_wmi_get_devstate(asus, dev_id, &retval); 320 if (err < 0) 321 return err; 322 323 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT)) 324 return -ENODEV; 325 326 if (mask == ASUS_WMI_DSTS_STATUS_BIT) { 327 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT) 328 return -ENODEV; 329 } 330 331 return retval & mask; 332 } 333 334 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id) 335 { 336 return asus_wmi_get_devstate_bits(asus, dev_id, 337 ASUS_WMI_DSTS_STATUS_BIT); 338 } 339 340 static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id) 341 { 342 u32 retval; 343 int status = asus_wmi_get_devstate(asus, dev_id, &retval); 344 345 return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT); 346 } 347 348 /* Input **********************************************************************/ 349 350 static int asus_wmi_input_init(struct asus_wmi *asus) 351 { 352 int err, result; 353 354 asus->inputdev = input_allocate_device(); 355 if (!asus->inputdev) 356 return -ENOMEM; 357 358 asus->inputdev->name = asus->driver->input_name; 359 asus->inputdev->phys = asus->driver->input_phys; 360 asus->inputdev->id.bustype = BUS_HOST; 361 asus->inputdev->dev.parent = &asus->platform_device->dev; 362 set_bit(EV_REP, asus->inputdev->evbit); 363 364 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL); 365 if (err) 366 goto err_free_dev; 367 368 if (asus->driver->quirks->use_kbd_dock_devid) { 369 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_KBD_DOCK); 370 if (result >= 0) { 371 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE); 372 input_report_switch(asus->inputdev, SW_TABLET_MODE, !result); 373 } else if (result != -ENODEV) { 374 pr_err("Error checking for keyboard-dock: %d\n", result); 375 } 376 } 377 378 err = input_register_device(asus->inputdev); 379 if (err) 380 goto err_free_dev; 381 382 return 0; 383 384 err_free_dev: 385 input_free_device(asus->inputdev); 386 return err; 387 } 388 389 static void asus_wmi_input_exit(struct asus_wmi *asus) 390 { 391 if (asus->inputdev) 392 input_unregister_device(asus->inputdev); 393 394 asus->inputdev = NULL; 395 } 396 397 /* Battery ********************************************************************/ 398 399 /* The battery maximum charging percentage */ 400 static int charge_end_threshold; 401 402 static ssize_t charge_control_end_threshold_store(struct device *dev, 403 struct device_attribute *attr, 404 const char *buf, size_t count) 405 { 406 int value, ret, rv; 407 408 ret = kstrtouint(buf, 10, &value); 409 if (ret) 410 return ret; 411 412 if (value < 0 || value > 100) 413 return -EINVAL; 414 415 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv); 416 if (ret) 417 return ret; 418 419 if (rv != 1) 420 return -EIO; 421 422 /* There isn't any method in the DSDT to read the threshold, so we 423 * save the threshold. 424 */ 425 charge_end_threshold = value; 426 return count; 427 } 428 429 static ssize_t charge_control_end_threshold_show(struct device *device, 430 struct device_attribute *attr, 431 char *buf) 432 { 433 return sprintf(buf, "%d\n", charge_end_threshold); 434 } 435 436 static DEVICE_ATTR_RW(charge_control_end_threshold); 437 438 static int asus_wmi_battery_add(struct power_supply *battery) 439 { 440 /* The WMI method does not provide a way to specific a battery, so we 441 * just assume it is the first battery. 442 * Note: On some newer ASUS laptops (Zenbook UM431DA), the primary/first 443 * battery is named BATT. 444 */ 445 if (strcmp(battery->desc->name, "BAT0") != 0 && 446 strcmp(battery->desc->name, "BAT1") != 0 && 447 strcmp(battery->desc->name, "BATC") != 0 && 448 strcmp(battery->desc->name, "BATT") != 0) 449 return -ENODEV; 450 451 if (device_create_file(&battery->dev, 452 &dev_attr_charge_control_end_threshold)) 453 return -ENODEV; 454 455 /* The charge threshold is only reset when the system is power cycled, 456 * and we can't get the current threshold so let set it to 100% when 457 * a battery is added. 458 */ 459 asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL); 460 charge_end_threshold = 100; 461 462 return 0; 463 } 464 465 static int asus_wmi_battery_remove(struct power_supply *battery) 466 { 467 device_remove_file(&battery->dev, 468 &dev_attr_charge_control_end_threshold); 469 return 0; 470 } 471 472 static struct acpi_battery_hook battery_hook = { 473 .add_battery = asus_wmi_battery_add, 474 .remove_battery = asus_wmi_battery_remove, 475 .name = "ASUS Battery Extension", 476 }; 477 478 static void asus_wmi_battery_init(struct asus_wmi *asus) 479 { 480 asus->battery_rsoc_available = false; 481 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) { 482 asus->battery_rsoc_available = true; 483 battery_hook_register(&battery_hook); 484 } 485 } 486 487 static void asus_wmi_battery_exit(struct asus_wmi *asus) 488 { 489 if (asus->battery_rsoc_available) 490 battery_hook_unregister(&battery_hook); 491 } 492 493 /* LEDs ***********************************************************************/ 494 495 /* 496 * These functions actually update the LED's, and are called from a 497 * workqueue. By doing this as separate work rather than when the LED 498 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 499 * potentially bad time, such as a timer interrupt. 500 */ 501 static void tpd_led_update(struct work_struct *work) 502 { 503 int ctrl_param; 504 struct asus_wmi *asus; 505 506 asus = container_of(work, struct asus_wmi, tpd_led_work); 507 508 ctrl_param = asus->tpd_led_wk; 509 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL); 510 } 511 512 static void tpd_led_set(struct led_classdev *led_cdev, 513 enum led_brightness value) 514 { 515 struct asus_wmi *asus; 516 517 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 518 519 asus->tpd_led_wk = !!value; 520 queue_work(asus->led_workqueue, &asus->tpd_led_work); 521 } 522 523 static int read_tpd_led_state(struct asus_wmi *asus) 524 { 525 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED); 526 } 527 528 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) 529 { 530 struct asus_wmi *asus; 531 532 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 533 534 return read_tpd_led_state(asus); 535 } 536 537 static void kbd_led_update(struct asus_wmi *asus) 538 { 539 int ctrl_param = 0; 540 541 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F); 542 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL); 543 } 544 545 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env) 546 { 547 int retval; 548 549 /* 550 * bits 0-2: level 551 * bit 7: light on/off 552 * bit 8-10: environment (0: dark, 1: normal, 2: light) 553 * bit 17: status unknown 554 */ 555 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT, 556 0xFFFF); 557 558 /* Unknown status is considered as off */ 559 if (retval == 0x8000) 560 retval = 0; 561 562 if (retval < 0) 563 return retval; 564 565 if (level) 566 *level = retval & 0x7F; 567 if (env) 568 *env = (retval >> 8) & 0x7F; 569 return 0; 570 } 571 572 static void do_kbd_led_set(struct led_classdev *led_cdev, int value) 573 { 574 struct asus_wmi *asus; 575 int max_level; 576 577 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 578 max_level = asus->kbd_led.max_brightness; 579 580 asus->kbd_led_wk = clamp_val(value, 0, max_level); 581 kbd_led_update(asus); 582 } 583 584 static void kbd_led_set(struct led_classdev *led_cdev, 585 enum led_brightness value) 586 { 587 /* Prevent disabling keyboard backlight on module unregister */ 588 if (led_cdev->flags & LED_UNREGISTERING) 589 return; 590 591 do_kbd_led_set(led_cdev, value); 592 } 593 594 static void kbd_led_set_by_kbd(struct asus_wmi *asus, enum led_brightness value) 595 { 596 struct led_classdev *led_cdev = &asus->kbd_led; 597 598 do_kbd_led_set(led_cdev, value); 599 led_classdev_notify_brightness_hw_changed(led_cdev, asus->kbd_led_wk); 600 } 601 602 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev) 603 { 604 struct asus_wmi *asus; 605 int retval, value; 606 607 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 608 609 retval = kbd_led_read(asus, &value, NULL); 610 if (retval < 0) 611 return retval; 612 613 return value; 614 } 615 616 static int wlan_led_unknown_state(struct asus_wmi *asus) 617 { 618 u32 result; 619 620 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 621 622 return result & ASUS_WMI_DSTS_UNKNOWN_BIT; 623 } 624 625 static void wlan_led_update(struct work_struct *work) 626 { 627 int ctrl_param; 628 struct asus_wmi *asus; 629 630 asus = container_of(work, struct asus_wmi, wlan_led_work); 631 632 ctrl_param = asus->wlan_led_wk; 633 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL); 634 } 635 636 static void wlan_led_set(struct led_classdev *led_cdev, 637 enum led_brightness value) 638 { 639 struct asus_wmi *asus; 640 641 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 642 643 asus->wlan_led_wk = !!value; 644 queue_work(asus->led_workqueue, &asus->wlan_led_work); 645 } 646 647 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev) 648 { 649 struct asus_wmi *asus; 650 u32 result; 651 652 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 653 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 654 655 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 656 } 657 658 static void lightbar_led_update(struct work_struct *work) 659 { 660 struct asus_wmi *asus; 661 int ctrl_param; 662 663 asus = container_of(work, struct asus_wmi, lightbar_led_work); 664 665 ctrl_param = asus->lightbar_led_wk; 666 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL); 667 } 668 669 static void lightbar_led_set(struct led_classdev *led_cdev, 670 enum led_brightness value) 671 { 672 struct asus_wmi *asus; 673 674 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 675 676 asus->lightbar_led_wk = !!value; 677 queue_work(asus->led_workqueue, &asus->lightbar_led_work); 678 } 679 680 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev) 681 { 682 struct asus_wmi *asus; 683 u32 result; 684 685 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 686 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result); 687 688 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK; 689 } 690 691 static void asus_wmi_led_exit(struct asus_wmi *asus) 692 { 693 led_classdev_unregister(&asus->kbd_led); 694 led_classdev_unregister(&asus->tpd_led); 695 led_classdev_unregister(&asus->wlan_led); 696 led_classdev_unregister(&asus->lightbar_led); 697 698 if (asus->led_workqueue) 699 destroy_workqueue(asus->led_workqueue); 700 } 701 702 static int asus_wmi_led_init(struct asus_wmi *asus) 703 { 704 int rv = 0, led_val; 705 706 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 707 if (!asus->led_workqueue) 708 return -ENOMEM; 709 710 if (read_tpd_led_state(asus) >= 0) { 711 INIT_WORK(&asus->tpd_led_work, tpd_led_update); 712 713 asus->tpd_led.name = "asus::touchpad"; 714 asus->tpd_led.brightness_set = tpd_led_set; 715 asus->tpd_led.brightness_get = tpd_led_get; 716 asus->tpd_led.max_brightness = 1; 717 718 rv = led_classdev_register(&asus->platform_device->dev, 719 &asus->tpd_led); 720 if (rv) 721 goto error; 722 } 723 724 if (!kbd_led_read(asus, &led_val, NULL)) { 725 asus->kbd_led_wk = led_val; 726 asus->kbd_led.name = "asus::kbd_backlight"; 727 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED; 728 asus->kbd_led.brightness_set = kbd_led_set; 729 asus->kbd_led.brightness_get = kbd_led_get; 730 asus->kbd_led.max_brightness = 3; 731 732 rv = led_classdev_register(&asus->platform_device->dev, 733 &asus->kbd_led); 734 if (rv) 735 goto error; 736 } 737 738 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_WIRELESS_LED) 739 && (asus->driver->quirks->wapf > 0)) { 740 INIT_WORK(&asus->wlan_led_work, wlan_led_update); 741 742 asus->wlan_led.name = "asus::wlan"; 743 asus->wlan_led.brightness_set = wlan_led_set; 744 if (!wlan_led_unknown_state(asus)) 745 asus->wlan_led.brightness_get = wlan_led_get; 746 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME; 747 asus->wlan_led.max_brightness = 1; 748 asus->wlan_led.default_trigger = "asus-wlan"; 749 750 rv = led_classdev_register(&asus->platform_device->dev, 751 &asus->wlan_led); 752 if (rv) 753 goto error; 754 } 755 756 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_LIGHTBAR)) { 757 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update); 758 759 asus->lightbar_led.name = "asus::lightbar"; 760 asus->lightbar_led.brightness_set = lightbar_led_set; 761 asus->lightbar_led.brightness_get = lightbar_led_get; 762 asus->lightbar_led.max_brightness = 1; 763 764 rv = led_classdev_register(&asus->platform_device->dev, 765 &asus->lightbar_led); 766 } 767 768 error: 769 if (rv) 770 asus_wmi_led_exit(asus); 771 772 return rv; 773 } 774 775 /* RF *************************************************************************/ 776 777 /* 778 * PCI hotplug (for wlan rfkill) 779 */ 780 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus) 781 { 782 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 783 784 if (result < 0) 785 return false; 786 return !result; 787 } 788 789 static void asus_rfkill_hotplug(struct asus_wmi *asus) 790 { 791 struct pci_dev *dev; 792 struct pci_bus *bus; 793 bool blocked; 794 bool absent; 795 u32 l; 796 797 mutex_lock(&asus->wmi_lock); 798 blocked = asus_wlan_rfkill_blocked(asus); 799 mutex_unlock(&asus->wmi_lock); 800 801 mutex_lock(&asus->hotplug_lock); 802 pci_lock_rescan_remove(); 803 804 if (asus->wlan.rfkill) 805 rfkill_set_sw_state(asus->wlan.rfkill, blocked); 806 807 if (asus->hotplug_slot.ops) { 808 bus = pci_find_bus(0, 1); 809 if (!bus) { 810 pr_warn("Unable to find PCI bus 1?\n"); 811 goto out_unlock; 812 } 813 814 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) { 815 pr_err("Unable to read PCI config space?\n"); 816 goto out_unlock; 817 } 818 absent = (l == 0xffffffff); 819 820 if (blocked != absent) { 821 pr_warn("BIOS says wireless lan is %s, " 822 "but the pci device is %s\n", 823 blocked ? "blocked" : "unblocked", 824 absent ? "absent" : "present"); 825 pr_warn("skipped wireless hotplug as probably " 826 "inappropriate for this model\n"); 827 goto out_unlock; 828 } 829 830 if (!blocked) { 831 dev = pci_get_slot(bus, 0); 832 if (dev) { 833 /* Device already present */ 834 pci_dev_put(dev); 835 goto out_unlock; 836 } 837 dev = pci_scan_single_device(bus, 0); 838 if (dev) { 839 pci_bus_assign_resources(bus); 840 pci_bus_add_device(dev); 841 } 842 } else { 843 dev = pci_get_slot(bus, 0); 844 if (dev) { 845 pci_stop_and_remove_bus_device(dev); 846 pci_dev_put(dev); 847 } 848 } 849 } 850 851 out_unlock: 852 pci_unlock_rescan_remove(); 853 mutex_unlock(&asus->hotplug_lock); 854 } 855 856 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data) 857 { 858 struct asus_wmi *asus = data; 859 860 if (event != ACPI_NOTIFY_BUS_CHECK) 861 return; 862 863 /* 864 * We can't call directly asus_rfkill_hotplug because most 865 * of the time WMBC is still being executed and not reetrant. 866 * There is currently no way to tell ACPICA that we want this 867 * method to be serialized, we schedule a asus_rfkill_hotplug 868 * call later, in a safer context. 869 */ 870 queue_work(asus->hotplug_workqueue, &asus->hotplug_work); 871 } 872 873 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node) 874 { 875 acpi_status status; 876 acpi_handle handle; 877 878 status = acpi_get_handle(NULL, node, &handle); 879 if (ACPI_FAILURE(status)) 880 return -ENODEV; 881 882 status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY, 883 asus_rfkill_notify, asus); 884 if (ACPI_FAILURE(status)) 885 pr_warn("Failed to register notify on %s\n", node); 886 887 return 0; 888 } 889 890 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node) 891 { 892 acpi_status status = AE_OK; 893 acpi_handle handle; 894 895 status = acpi_get_handle(NULL, node, &handle); 896 if (ACPI_FAILURE(status)) 897 return; 898 899 status = acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY, 900 asus_rfkill_notify); 901 if (ACPI_FAILURE(status)) 902 pr_err("Error removing rfkill notify handler %s\n", node); 903 } 904 905 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot, 906 u8 *value) 907 { 908 struct asus_wmi *asus = container_of(hotplug_slot, 909 struct asus_wmi, hotplug_slot); 910 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 911 912 if (result < 0) 913 return result; 914 915 *value = !!result; 916 return 0; 917 } 918 919 static const struct hotplug_slot_ops asus_hotplug_slot_ops = { 920 .get_adapter_status = asus_get_adapter_status, 921 .get_power_status = asus_get_adapter_status, 922 }; 923 924 static void asus_hotplug_work(struct work_struct *work) 925 { 926 struct asus_wmi *asus; 927 928 asus = container_of(work, struct asus_wmi, hotplug_work); 929 asus_rfkill_hotplug(asus); 930 } 931 932 static int asus_setup_pci_hotplug(struct asus_wmi *asus) 933 { 934 int ret = -ENOMEM; 935 struct pci_bus *bus = pci_find_bus(0, 1); 936 937 if (!bus) { 938 pr_err("Unable to find wifi PCI bus\n"); 939 return -ENODEV; 940 } 941 942 asus->hotplug_workqueue = 943 create_singlethread_workqueue("hotplug_workqueue"); 944 if (!asus->hotplug_workqueue) 945 goto error_workqueue; 946 947 INIT_WORK(&asus->hotplug_work, asus_hotplug_work); 948 949 asus->hotplug_slot.ops = &asus_hotplug_slot_ops; 950 951 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi"); 952 if (ret) { 953 pr_err("Unable to register hotplug slot - %d\n", ret); 954 goto error_register; 955 } 956 957 return 0; 958 959 error_register: 960 asus->hotplug_slot.ops = NULL; 961 destroy_workqueue(asus->hotplug_workqueue); 962 error_workqueue: 963 return ret; 964 } 965 966 /* 967 * Rfkill devices 968 */ 969 static int asus_rfkill_set(void *data, bool blocked) 970 { 971 struct asus_rfkill *priv = data; 972 u32 ctrl_param = !blocked; 973 u32 dev_id = priv->dev_id; 974 975 /* 976 * If the user bit is set, BIOS can't set and record the wlan status, 977 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED 978 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN). 979 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED 980 * while setting the wlan status through WMI. 981 * This is also the behavior that windows app will do. 982 */ 983 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 984 priv->asus->driver->wlan_ctrl_by_user) 985 dev_id = ASUS_WMI_DEVID_WLAN_LED; 986 987 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL); 988 } 989 990 static void asus_rfkill_query(struct rfkill *rfkill, void *data) 991 { 992 struct asus_rfkill *priv = data; 993 int result; 994 995 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id); 996 997 if (result < 0) 998 return; 999 1000 rfkill_set_sw_state(priv->rfkill, !result); 1001 } 1002 1003 static int asus_rfkill_wlan_set(void *data, bool blocked) 1004 { 1005 struct asus_rfkill *priv = data; 1006 struct asus_wmi *asus = priv->asus; 1007 int ret; 1008 1009 /* 1010 * This handler is enabled only if hotplug is enabled. 1011 * In this case, the asus_wmi_set_devstate() will 1012 * trigger a wmi notification and we need to wait 1013 * this call to finish before being able to call 1014 * any wmi method 1015 */ 1016 mutex_lock(&asus->wmi_lock); 1017 ret = asus_rfkill_set(data, blocked); 1018 mutex_unlock(&asus->wmi_lock); 1019 return ret; 1020 } 1021 1022 static const struct rfkill_ops asus_rfkill_wlan_ops = { 1023 .set_block = asus_rfkill_wlan_set, 1024 .query = asus_rfkill_query, 1025 }; 1026 1027 static const struct rfkill_ops asus_rfkill_ops = { 1028 .set_block = asus_rfkill_set, 1029 .query = asus_rfkill_query, 1030 }; 1031 1032 static int asus_new_rfkill(struct asus_wmi *asus, 1033 struct asus_rfkill *arfkill, 1034 const char *name, enum rfkill_type type, int dev_id) 1035 { 1036 int result = asus_wmi_get_devstate_simple(asus, dev_id); 1037 struct rfkill **rfkill = &arfkill->rfkill; 1038 1039 if (result < 0) 1040 return result; 1041 1042 arfkill->dev_id = dev_id; 1043 arfkill->asus = asus; 1044 1045 if (dev_id == ASUS_WMI_DEVID_WLAN && 1046 asus->driver->quirks->hotplug_wireless) 1047 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1048 &asus_rfkill_wlan_ops, arfkill); 1049 else 1050 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1051 &asus_rfkill_ops, arfkill); 1052 1053 if (!*rfkill) 1054 return -EINVAL; 1055 1056 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 1057 (asus->driver->quirks->wapf > 0)) 1058 rfkill_set_led_trigger_name(*rfkill, "asus-wlan"); 1059 1060 rfkill_init_sw_state(*rfkill, !result); 1061 result = rfkill_register(*rfkill); 1062 if (result) { 1063 rfkill_destroy(*rfkill); 1064 *rfkill = NULL; 1065 return result; 1066 } 1067 return 0; 1068 } 1069 1070 static void asus_wmi_rfkill_exit(struct asus_wmi *asus) 1071 { 1072 if (asus->driver->wlan_ctrl_by_user && ashs_present()) 1073 return; 1074 1075 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1076 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1077 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1078 if (asus->wlan.rfkill) { 1079 rfkill_unregister(asus->wlan.rfkill); 1080 rfkill_destroy(asus->wlan.rfkill); 1081 asus->wlan.rfkill = NULL; 1082 } 1083 /* 1084 * Refresh pci hotplug in case the rfkill state was changed after 1085 * asus_unregister_rfkill_notifier() 1086 */ 1087 asus_rfkill_hotplug(asus); 1088 if (asus->hotplug_slot.ops) 1089 pci_hp_deregister(&asus->hotplug_slot); 1090 if (asus->hotplug_workqueue) 1091 destroy_workqueue(asus->hotplug_workqueue); 1092 1093 if (asus->bluetooth.rfkill) { 1094 rfkill_unregister(asus->bluetooth.rfkill); 1095 rfkill_destroy(asus->bluetooth.rfkill); 1096 asus->bluetooth.rfkill = NULL; 1097 } 1098 if (asus->wimax.rfkill) { 1099 rfkill_unregister(asus->wimax.rfkill); 1100 rfkill_destroy(asus->wimax.rfkill); 1101 asus->wimax.rfkill = NULL; 1102 } 1103 if (asus->wwan3g.rfkill) { 1104 rfkill_unregister(asus->wwan3g.rfkill); 1105 rfkill_destroy(asus->wwan3g.rfkill); 1106 asus->wwan3g.rfkill = NULL; 1107 } 1108 if (asus->gps.rfkill) { 1109 rfkill_unregister(asus->gps.rfkill); 1110 rfkill_destroy(asus->gps.rfkill); 1111 asus->gps.rfkill = NULL; 1112 } 1113 if (asus->uwb.rfkill) { 1114 rfkill_unregister(asus->uwb.rfkill); 1115 rfkill_destroy(asus->uwb.rfkill); 1116 asus->uwb.rfkill = NULL; 1117 } 1118 } 1119 1120 static int asus_wmi_rfkill_init(struct asus_wmi *asus) 1121 { 1122 int result = 0; 1123 1124 mutex_init(&asus->hotplug_lock); 1125 mutex_init(&asus->wmi_lock); 1126 1127 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan", 1128 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN); 1129 1130 if (result && result != -ENODEV) 1131 goto exit; 1132 1133 result = asus_new_rfkill(asus, &asus->bluetooth, 1134 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH, 1135 ASUS_WMI_DEVID_BLUETOOTH); 1136 1137 if (result && result != -ENODEV) 1138 goto exit; 1139 1140 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax", 1141 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX); 1142 1143 if (result && result != -ENODEV) 1144 goto exit; 1145 1146 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g", 1147 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G); 1148 1149 if (result && result != -ENODEV) 1150 goto exit; 1151 1152 result = asus_new_rfkill(asus, &asus->gps, "asus-gps", 1153 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS); 1154 1155 if (result && result != -ENODEV) 1156 goto exit; 1157 1158 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb", 1159 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB); 1160 1161 if (result && result != -ENODEV) 1162 goto exit; 1163 1164 if (!asus->driver->quirks->hotplug_wireless) 1165 goto exit; 1166 1167 result = asus_setup_pci_hotplug(asus); 1168 /* 1169 * If we get -EBUSY then something else is handling the PCI hotplug - 1170 * don't fail in this case 1171 */ 1172 if (result == -EBUSY) 1173 result = 0; 1174 1175 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1176 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1177 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1178 /* 1179 * Refresh pci hotplug in case the rfkill state was changed during 1180 * setup. 1181 */ 1182 asus_rfkill_hotplug(asus); 1183 1184 exit: 1185 if (result && result != -ENODEV) 1186 asus_wmi_rfkill_exit(asus); 1187 1188 if (result == -ENODEV) 1189 result = 0; 1190 1191 return result; 1192 } 1193 1194 /* Quirks *********************************************************************/ 1195 1196 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus) 1197 { 1198 struct pci_dev *xhci_pdev; 1199 u32 orig_ports_available; 1200 u32 ports_available = asus->driver->quirks->xusb2pr; 1201 1202 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL, 1203 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI, 1204 NULL); 1205 1206 if (!xhci_pdev) 1207 return; 1208 1209 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1210 &orig_ports_available); 1211 1212 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1213 cpu_to_le32(ports_available)); 1214 1215 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n", 1216 orig_ports_available, ports_available); 1217 } 1218 1219 /* 1220 * Some devices dont support or have borcken get_als method 1221 * but still support set method. 1222 */ 1223 static void asus_wmi_set_als(void) 1224 { 1225 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL); 1226 } 1227 1228 /* Hwmon device ***************************************************************/ 1229 1230 static int asus_agfn_fan_speed_read(struct asus_wmi *asus, int fan, 1231 int *speed) 1232 { 1233 struct agfn_fan_args args = { 1234 .agfn.len = sizeof(args), 1235 .agfn.mfun = ASUS_FAN_MFUN, 1236 .agfn.sfun = ASUS_FAN_SFUN_READ, 1237 .fan = fan, 1238 .speed = 0, 1239 }; 1240 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1241 int status; 1242 1243 if (fan != 1) 1244 return -EINVAL; 1245 1246 status = asus_wmi_evaluate_method_agfn(input); 1247 1248 if (status || args.agfn.err) 1249 return -ENXIO; 1250 1251 if (speed) 1252 *speed = args.speed; 1253 1254 return 0; 1255 } 1256 1257 static int asus_agfn_fan_speed_write(struct asus_wmi *asus, int fan, 1258 int *speed) 1259 { 1260 struct agfn_fan_args args = { 1261 .agfn.len = sizeof(args), 1262 .agfn.mfun = ASUS_FAN_MFUN, 1263 .agfn.sfun = ASUS_FAN_SFUN_WRITE, 1264 .fan = fan, 1265 .speed = speed ? *speed : 0, 1266 }; 1267 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1268 int status; 1269 1270 /* 1: for setting 1st fan's speed 0: setting auto mode */ 1271 if (fan != 1 && fan != 0) 1272 return -EINVAL; 1273 1274 status = asus_wmi_evaluate_method_agfn(input); 1275 1276 if (status || args.agfn.err) 1277 return -ENXIO; 1278 1279 if (speed && fan == 1) 1280 asus->agfn_pwm = *speed; 1281 1282 return 0; 1283 } 1284 1285 /* 1286 * Check if we can read the speed of one fan. If true we assume we can also 1287 * control it. 1288 */ 1289 static bool asus_wmi_has_agfn_fan(struct asus_wmi *asus) 1290 { 1291 int status; 1292 int speed; 1293 u32 value; 1294 1295 status = asus_agfn_fan_speed_read(asus, 1, &speed); 1296 if (status != 0) 1297 return false; 1298 1299 status = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value); 1300 if (status != 0) 1301 return false; 1302 1303 /* 1304 * We need to find a better way, probably using sfun, 1305 * bits or spec ... 1306 * Currently we disable it if: 1307 * - ASUS_WMI_UNSUPPORTED_METHOD is returned 1308 * - reverved bits are non-zero 1309 * - sfun and presence bit are not set 1310 */ 1311 return !(value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000 1312 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT))); 1313 } 1314 1315 static int asus_fan_set_auto(struct asus_wmi *asus) 1316 { 1317 int status; 1318 u32 retval; 1319 1320 switch (asus->fan_type) { 1321 case FAN_TYPE_SPEC83: 1322 status = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL, 1323 0, &retval); 1324 if (status) 1325 return status; 1326 1327 if (retval != 1) 1328 return -EIO; 1329 break; 1330 1331 case FAN_TYPE_AGFN: 1332 status = asus_agfn_fan_speed_write(asus, 0, NULL); 1333 if (status) 1334 return -ENXIO; 1335 break; 1336 1337 default: 1338 return -ENXIO; 1339 } 1340 1341 1342 return 0; 1343 } 1344 1345 static ssize_t pwm1_show(struct device *dev, 1346 struct device_attribute *attr, 1347 char *buf) 1348 { 1349 struct asus_wmi *asus = dev_get_drvdata(dev); 1350 int err; 1351 int value; 1352 1353 /* If we already set a value then just return it */ 1354 if (asus->agfn_pwm >= 0) 1355 return sprintf(buf, "%d\n", asus->agfn_pwm); 1356 1357 /* 1358 * If we haven't set already set a value through the AGFN interface, 1359 * we read a current value through the (now-deprecated) FAN_CTRL device. 1360 */ 1361 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value); 1362 if (err < 0) 1363 return err; 1364 1365 value &= 0xFF; 1366 1367 if (value == 1) /* Low Speed */ 1368 value = 85; 1369 else if (value == 2) 1370 value = 170; 1371 else if (value == 3) 1372 value = 255; 1373 else if (value) { 1374 pr_err("Unknown fan speed %#x\n", value); 1375 value = -1; 1376 } 1377 1378 return sprintf(buf, "%d\n", value); 1379 } 1380 1381 static ssize_t pwm1_store(struct device *dev, 1382 struct device_attribute *attr, 1383 const char *buf, size_t count) { 1384 struct asus_wmi *asus = dev_get_drvdata(dev); 1385 int value; 1386 int state; 1387 int ret; 1388 1389 ret = kstrtouint(buf, 10, &value); 1390 if (ret) 1391 return ret; 1392 1393 value = clamp(value, 0, 255); 1394 1395 state = asus_agfn_fan_speed_write(asus, 1, &value); 1396 if (state) 1397 pr_warn("Setting fan speed failed: %d\n", state); 1398 else 1399 asus->fan_pwm_mode = ASUS_FAN_CTRL_MANUAL; 1400 1401 return count; 1402 } 1403 1404 static ssize_t fan1_input_show(struct device *dev, 1405 struct device_attribute *attr, 1406 char *buf) 1407 { 1408 struct asus_wmi *asus = dev_get_drvdata(dev); 1409 int value; 1410 int ret; 1411 1412 switch (asus->fan_type) { 1413 case FAN_TYPE_SPEC83: 1414 ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL, 1415 &value); 1416 if (ret < 0) 1417 return ret; 1418 1419 value &= 0xffff; 1420 break; 1421 1422 case FAN_TYPE_AGFN: 1423 /* no speed readable on manual mode */ 1424 if (asus->fan_pwm_mode == ASUS_FAN_CTRL_MANUAL) 1425 return -ENXIO; 1426 1427 ret = asus_agfn_fan_speed_read(asus, 1, &value); 1428 if (ret) { 1429 pr_warn("reading fan speed failed: %d\n", ret); 1430 return -ENXIO; 1431 } 1432 break; 1433 1434 default: 1435 return -ENXIO; 1436 } 1437 1438 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100); 1439 } 1440 1441 static ssize_t pwm1_enable_show(struct device *dev, 1442 struct device_attribute *attr, 1443 char *buf) 1444 { 1445 struct asus_wmi *asus = dev_get_drvdata(dev); 1446 1447 /* 1448 * Just read back the cached pwm mode. 1449 * 1450 * For the CPU_FAN device, the spec indicates that we should be 1451 * able to read the device status and consult bit 19 to see if we 1452 * are in Full On or Automatic mode. However, this does not work 1453 * in practice on X532FL at least (the bit is always 0) and there's 1454 * also nothing in the DSDT to indicate that this behaviour exists. 1455 */ 1456 return sprintf(buf, "%d\n", asus->fan_pwm_mode); 1457 } 1458 1459 static ssize_t pwm1_enable_store(struct device *dev, 1460 struct device_attribute *attr, 1461 const char *buf, size_t count) 1462 { 1463 struct asus_wmi *asus = dev_get_drvdata(dev); 1464 int status = 0; 1465 int state; 1466 int value; 1467 int ret; 1468 u32 retval; 1469 1470 ret = kstrtouint(buf, 10, &state); 1471 if (ret) 1472 return ret; 1473 1474 if (asus->fan_type == FAN_TYPE_SPEC83) { 1475 switch (state) { /* standard documented hwmon values */ 1476 case ASUS_FAN_CTRL_FULLSPEED: 1477 value = 1; 1478 break; 1479 case ASUS_FAN_CTRL_AUTO: 1480 value = 0; 1481 break; 1482 default: 1483 return -EINVAL; 1484 } 1485 1486 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL, 1487 value, &retval); 1488 if (ret) 1489 return ret; 1490 1491 if (retval != 1) 1492 return -EIO; 1493 } else if (asus->fan_type == FAN_TYPE_AGFN) { 1494 switch (state) { 1495 case ASUS_FAN_CTRL_MANUAL: 1496 break; 1497 1498 case ASUS_FAN_CTRL_AUTO: 1499 status = asus_fan_set_auto(asus); 1500 if (status) 1501 return status; 1502 break; 1503 1504 default: 1505 return -EINVAL; 1506 } 1507 } 1508 1509 asus->fan_pwm_mode = state; 1510 return count; 1511 } 1512 1513 static ssize_t fan1_label_show(struct device *dev, 1514 struct device_attribute *attr, 1515 char *buf) 1516 { 1517 return sprintf(buf, "%s\n", ASUS_FAN_DESC); 1518 } 1519 1520 static ssize_t asus_hwmon_temp1(struct device *dev, 1521 struct device_attribute *attr, 1522 char *buf) 1523 { 1524 struct asus_wmi *asus = dev_get_drvdata(dev); 1525 u32 value; 1526 int err; 1527 1528 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value); 1529 if (err < 0) 1530 return err; 1531 1532 return sprintf(buf, "%ld\n", 1533 deci_kelvin_to_millicelsius(value & 0xFFFF)); 1534 } 1535 1536 /* Fan1 */ 1537 static DEVICE_ATTR_RW(pwm1); 1538 static DEVICE_ATTR_RW(pwm1_enable); 1539 static DEVICE_ATTR_RO(fan1_input); 1540 static DEVICE_ATTR_RO(fan1_label); 1541 1542 /* Temperature */ 1543 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL); 1544 1545 static struct attribute *hwmon_attributes[] = { 1546 &dev_attr_pwm1.attr, 1547 &dev_attr_pwm1_enable.attr, 1548 &dev_attr_fan1_input.attr, 1549 &dev_attr_fan1_label.attr, 1550 1551 &dev_attr_temp1_input.attr, 1552 NULL 1553 }; 1554 1555 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj, 1556 struct attribute *attr, int idx) 1557 { 1558 struct device *dev = container_of(kobj, struct device, kobj); 1559 struct asus_wmi *asus = dev_get_drvdata(dev->parent); 1560 u32 value = ASUS_WMI_UNSUPPORTED_METHOD; 1561 1562 if (attr == &dev_attr_pwm1.attr) { 1563 if (asus->fan_type != FAN_TYPE_AGFN) 1564 return 0; 1565 } else if (attr == &dev_attr_fan1_input.attr 1566 || attr == &dev_attr_fan1_label.attr 1567 || attr == &dev_attr_pwm1_enable.attr) { 1568 if (asus->fan_type == FAN_TYPE_NONE) 1569 return 0; 1570 } else if (attr == &dev_attr_temp1_input.attr) { 1571 int err = asus_wmi_get_devstate(asus, 1572 ASUS_WMI_DEVID_THERMAL_CTRL, 1573 &value); 1574 1575 if (err < 0) 1576 return 0; /* can't return negative here */ 1577 1578 /* 1579 * If the temperature value in deci-Kelvin is near the absolute 1580 * zero temperature, something is clearly wrong 1581 */ 1582 if (value == 0 || value == 1) 1583 return 0; 1584 } 1585 1586 return attr->mode; 1587 } 1588 1589 static const struct attribute_group hwmon_attribute_group = { 1590 .is_visible = asus_hwmon_sysfs_is_visible, 1591 .attrs = hwmon_attributes 1592 }; 1593 __ATTRIBUTE_GROUPS(hwmon_attribute); 1594 1595 static int asus_wmi_hwmon_init(struct asus_wmi *asus) 1596 { 1597 struct device *dev = &asus->platform_device->dev; 1598 struct device *hwmon; 1599 1600 hwmon = devm_hwmon_device_register_with_groups(dev, "asus", asus, 1601 hwmon_attribute_groups); 1602 1603 if (IS_ERR(hwmon)) { 1604 pr_err("Could not register asus hwmon device\n"); 1605 return PTR_ERR(hwmon); 1606 } 1607 return 0; 1608 } 1609 1610 static int asus_wmi_fan_init(struct asus_wmi *asus) 1611 { 1612 asus->fan_type = FAN_TYPE_NONE; 1613 asus->agfn_pwm = -1; 1614 1615 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL)) 1616 asus->fan_type = FAN_TYPE_SPEC83; 1617 else if (asus_wmi_has_agfn_fan(asus)) 1618 asus->fan_type = FAN_TYPE_AGFN; 1619 1620 if (asus->fan_type == FAN_TYPE_NONE) 1621 return -ENODEV; 1622 1623 asus_fan_set_auto(asus); 1624 asus->fan_pwm_mode = ASUS_FAN_CTRL_AUTO; 1625 return 0; 1626 } 1627 1628 /* Fan mode *******************************************************************/ 1629 1630 static int fan_boost_mode_check_present(struct asus_wmi *asus) 1631 { 1632 u32 result; 1633 int err; 1634 1635 asus->fan_boost_mode_available = false; 1636 1637 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_BOOST_MODE, 1638 &result); 1639 if (err) { 1640 if (err == -ENODEV) 1641 return 0; 1642 else 1643 return err; 1644 } 1645 1646 if ((result & ASUS_WMI_DSTS_PRESENCE_BIT) && 1647 (result & ASUS_FAN_BOOST_MODES_MASK)) { 1648 asus->fan_boost_mode_available = true; 1649 asus->fan_boost_mode_mask = result & ASUS_FAN_BOOST_MODES_MASK; 1650 } 1651 1652 return 0; 1653 } 1654 1655 static int fan_boost_mode_write(struct asus_wmi *asus) 1656 { 1657 int err; 1658 u8 value; 1659 u32 retval; 1660 1661 value = asus->fan_boost_mode; 1662 1663 pr_info("Set fan boost mode: %u\n", value); 1664 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_FAN_BOOST_MODE, value, 1665 &retval); 1666 if (err) { 1667 pr_warn("Failed to set fan boost mode: %d\n", err); 1668 return err; 1669 } 1670 1671 if (retval != 1) { 1672 pr_warn("Failed to set fan boost mode (retval): 0x%x\n", 1673 retval); 1674 return -EIO; 1675 } 1676 1677 return 0; 1678 } 1679 1680 static int fan_boost_mode_switch_next(struct asus_wmi *asus) 1681 { 1682 u8 mask = asus->fan_boost_mode_mask; 1683 1684 if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_NORMAL) { 1685 if (mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK) 1686 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_OVERBOOST; 1687 else if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK) 1688 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT; 1689 } else if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) { 1690 if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK) 1691 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT; 1692 else 1693 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL; 1694 } else { 1695 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL; 1696 } 1697 1698 return fan_boost_mode_write(asus); 1699 } 1700 1701 static ssize_t fan_boost_mode_show(struct device *dev, 1702 struct device_attribute *attr, char *buf) 1703 { 1704 struct asus_wmi *asus = dev_get_drvdata(dev); 1705 1706 return scnprintf(buf, PAGE_SIZE, "%d\n", asus->fan_boost_mode); 1707 } 1708 1709 static ssize_t fan_boost_mode_store(struct device *dev, 1710 struct device_attribute *attr, 1711 const char *buf, size_t count) 1712 { 1713 int result; 1714 u8 new_mode; 1715 struct asus_wmi *asus = dev_get_drvdata(dev); 1716 u8 mask = asus->fan_boost_mode_mask; 1717 1718 result = kstrtou8(buf, 10, &new_mode); 1719 if (result < 0) { 1720 pr_warn("Trying to store invalid value\n"); 1721 return result; 1722 } 1723 1724 if (new_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) { 1725 if (!(mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK)) 1726 return -EINVAL; 1727 } else if (new_mode == ASUS_FAN_BOOST_MODE_SILENT) { 1728 if (!(mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)) 1729 return -EINVAL; 1730 } else if (new_mode != ASUS_FAN_BOOST_MODE_NORMAL) { 1731 return -EINVAL; 1732 } 1733 1734 asus->fan_boost_mode = new_mode; 1735 fan_boost_mode_write(asus); 1736 1737 return count; 1738 } 1739 1740 // Fan boost mode: 0 - normal, 1 - overboost, 2 - silent 1741 static DEVICE_ATTR_RW(fan_boost_mode); 1742 1743 /* Throttle thermal policy ****************************************************/ 1744 1745 static int throttle_thermal_policy_check_present(struct asus_wmi *asus) 1746 { 1747 u32 result; 1748 int err; 1749 1750 asus->throttle_thermal_policy_available = false; 1751 1752 err = asus_wmi_get_devstate(asus, 1753 ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY, 1754 &result); 1755 if (err) { 1756 if (err == -ENODEV) 1757 return 0; 1758 return err; 1759 } 1760 1761 if (result & ASUS_WMI_DSTS_PRESENCE_BIT) 1762 asus->throttle_thermal_policy_available = true; 1763 1764 return 0; 1765 } 1766 1767 static int throttle_thermal_policy_write(struct asus_wmi *asus) 1768 { 1769 int err; 1770 u8 value; 1771 u32 retval; 1772 1773 value = asus->throttle_thermal_policy_mode; 1774 1775 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY, 1776 value, &retval); 1777 if (err) { 1778 pr_warn("Failed to set throttle thermal policy: %d\n", err); 1779 return err; 1780 } 1781 1782 if (retval != 1) { 1783 pr_warn("Failed to set throttle thermal policy (retval): 0x%x\n", 1784 retval); 1785 return -EIO; 1786 } 1787 1788 return 0; 1789 } 1790 1791 static int throttle_thermal_policy_set_default(struct asus_wmi *asus) 1792 { 1793 if (!asus->throttle_thermal_policy_available) 1794 return 0; 1795 1796 asus->throttle_thermal_policy_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT; 1797 return throttle_thermal_policy_write(asus); 1798 } 1799 1800 static int throttle_thermal_policy_switch_next(struct asus_wmi *asus) 1801 { 1802 u8 new_mode = asus->throttle_thermal_policy_mode + 1; 1803 1804 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT) 1805 new_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT; 1806 1807 asus->throttle_thermal_policy_mode = new_mode; 1808 return throttle_thermal_policy_write(asus); 1809 } 1810 1811 static ssize_t throttle_thermal_policy_show(struct device *dev, 1812 struct device_attribute *attr, char *buf) 1813 { 1814 struct asus_wmi *asus = dev_get_drvdata(dev); 1815 u8 mode = asus->throttle_thermal_policy_mode; 1816 1817 return scnprintf(buf, PAGE_SIZE, "%d\n", mode); 1818 } 1819 1820 static ssize_t throttle_thermal_policy_store(struct device *dev, 1821 struct device_attribute *attr, 1822 const char *buf, size_t count) 1823 { 1824 int result; 1825 u8 new_mode; 1826 struct asus_wmi *asus = dev_get_drvdata(dev); 1827 1828 result = kstrtou8(buf, 10, &new_mode); 1829 if (result < 0) 1830 return result; 1831 1832 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT) 1833 return -EINVAL; 1834 1835 asus->throttle_thermal_policy_mode = new_mode; 1836 throttle_thermal_policy_write(asus); 1837 1838 return count; 1839 } 1840 1841 // Throttle thermal policy: 0 - default, 1 - overboost, 2 - silent 1842 static DEVICE_ATTR_RW(throttle_thermal_policy); 1843 1844 /* Backlight ******************************************************************/ 1845 1846 static int read_backlight_power(struct asus_wmi *asus) 1847 { 1848 int ret; 1849 1850 if (asus->driver->quirks->store_backlight_power) 1851 ret = !asus->driver->panel_power; 1852 else 1853 ret = asus_wmi_get_devstate_simple(asus, 1854 ASUS_WMI_DEVID_BACKLIGHT); 1855 1856 if (ret < 0) 1857 return ret; 1858 1859 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; 1860 } 1861 1862 static int read_brightness_max(struct asus_wmi *asus) 1863 { 1864 u32 retval; 1865 int err; 1866 1867 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1868 if (err < 0) 1869 return err; 1870 1871 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK; 1872 retval >>= 8; 1873 1874 if (!retval) 1875 return -ENODEV; 1876 1877 return retval; 1878 } 1879 1880 static int read_brightness(struct backlight_device *bd) 1881 { 1882 struct asus_wmi *asus = bl_get_data(bd); 1883 u32 retval; 1884 int err; 1885 1886 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1887 if (err < 0) 1888 return err; 1889 1890 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 1891 } 1892 1893 static u32 get_scalar_command(struct backlight_device *bd) 1894 { 1895 struct asus_wmi *asus = bl_get_data(bd); 1896 u32 ctrl_param = 0; 1897 1898 if ((asus->driver->brightness < bd->props.brightness) || 1899 bd->props.brightness == bd->props.max_brightness) 1900 ctrl_param = 0x00008001; 1901 else if ((asus->driver->brightness > bd->props.brightness) || 1902 bd->props.brightness == 0) 1903 ctrl_param = 0x00008000; 1904 1905 asus->driver->brightness = bd->props.brightness; 1906 1907 return ctrl_param; 1908 } 1909 1910 static int update_bl_status(struct backlight_device *bd) 1911 { 1912 struct asus_wmi *asus = bl_get_data(bd); 1913 u32 ctrl_param; 1914 int power, err = 0; 1915 1916 power = read_backlight_power(asus); 1917 if (power != -ENODEV && bd->props.power != power) { 1918 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK); 1919 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 1920 ctrl_param, NULL); 1921 if (asus->driver->quirks->store_backlight_power) 1922 asus->driver->panel_power = bd->props.power; 1923 1924 /* When using scalar brightness, updating the brightness 1925 * will mess with the backlight power */ 1926 if (asus->driver->quirks->scalar_panel_brightness) 1927 return err; 1928 } 1929 1930 if (asus->driver->quirks->scalar_panel_brightness) 1931 ctrl_param = get_scalar_command(bd); 1932 else 1933 ctrl_param = bd->props.brightness; 1934 1935 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS, 1936 ctrl_param, NULL); 1937 1938 return err; 1939 } 1940 1941 static const struct backlight_ops asus_wmi_bl_ops = { 1942 .get_brightness = read_brightness, 1943 .update_status = update_bl_status, 1944 }; 1945 1946 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code) 1947 { 1948 struct backlight_device *bd = asus->backlight_device; 1949 int old = bd->props.brightness; 1950 int new = old; 1951 1952 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1953 new = code - NOTIFY_BRNUP_MIN + 1; 1954 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 1955 new = code - NOTIFY_BRNDOWN_MIN; 1956 1957 bd->props.brightness = new; 1958 backlight_update_status(bd); 1959 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 1960 1961 return old; 1962 } 1963 1964 static int asus_wmi_backlight_init(struct asus_wmi *asus) 1965 { 1966 struct backlight_device *bd; 1967 struct backlight_properties props; 1968 int max; 1969 int power; 1970 1971 max = read_brightness_max(asus); 1972 if (max < 0) 1973 return max; 1974 1975 power = read_backlight_power(asus); 1976 if (power == -ENODEV) 1977 power = FB_BLANK_UNBLANK; 1978 else if (power < 0) 1979 return power; 1980 1981 memset(&props, 0, sizeof(struct backlight_properties)); 1982 props.type = BACKLIGHT_PLATFORM; 1983 props.max_brightness = max; 1984 bd = backlight_device_register(asus->driver->name, 1985 &asus->platform_device->dev, asus, 1986 &asus_wmi_bl_ops, &props); 1987 if (IS_ERR(bd)) { 1988 pr_err("Could not register backlight device\n"); 1989 return PTR_ERR(bd); 1990 } 1991 1992 asus->backlight_device = bd; 1993 1994 if (asus->driver->quirks->store_backlight_power) 1995 asus->driver->panel_power = power; 1996 1997 bd->props.brightness = read_brightness(bd); 1998 bd->props.power = power; 1999 backlight_update_status(bd); 2000 2001 asus->driver->brightness = bd->props.brightness; 2002 2003 return 0; 2004 } 2005 2006 static void asus_wmi_backlight_exit(struct asus_wmi *asus) 2007 { 2008 backlight_device_unregister(asus->backlight_device); 2009 2010 asus->backlight_device = NULL; 2011 } 2012 2013 static int is_display_toggle(int code) 2014 { 2015 /* display toggle keys */ 2016 if ((code >= 0x61 && code <= 0x67) || 2017 (code >= 0x8c && code <= 0x93) || 2018 (code >= 0xa0 && code <= 0xa7) || 2019 (code >= 0xd0 && code <= 0xd5)) 2020 return 1; 2021 2022 return 0; 2023 } 2024 2025 /* Fn-lock ********************************************************************/ 2026 2027 static bool asus_wmi_has_fnlock_key(struct asus_wmi *asus) 2028 { 2029 u32 result; 2030 2031 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FNLOCK, &result); 2032 2033 return (result & ASUS_WMI_DSTS_PRESENCE_BIT) && 2034 !(result & ASUS_WMI_FNLOCK_BIOS_DISABLED); 2035 } 2036 2037 static void asus_wmi_fnlock_update(struct asus_wmi *asus) 2038 { 2039 int mode = asus->fnlock_locked; 2040 2041 asus_wmi_set_devstate(ASUS_WMI_DEVID_FNLOCK, mode, NULL); 2042 } 2043 2044 /* WMI events *****************************************************************/ 2045 2046 static int asus_wmi_get_event_code(u32 value) 2047 { 2048 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 2049 union acpi_object *obj; 2050 acpi_status status; 2051 int code; 2052 2053 status = wmi_get_event_data(value, &response); 2054 if (ACPI_FAILURE(status)) { 2055 pr_warn("Failed to get WMI notify code: %s\n", 2056 acpi_format_exception(status)); 2057 return -EIO; 2058 } 2059 2060 obj = (union acpi_object *)response.pointer; 2061 2062 if (obj && obj->type == ACPI_TYPE_INTEGER) 2063 code = (int)(obj->integer.value & WMI_EVENT_MASK); 2064 else 2065 code = -EIO; 2066 2067 kfree(obj); 2068 return code; 2069 } 2070 2071 static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus) 2072 { 2073 unsigned int key_value = 1; 2074 bool autorelease = 1; 2075 int result, orig_code; 2076 2077 orig_code = code; 2078 2079 if (asus->driver->key_filter) { 2080 asus->driver->key_filter(asus->driver, &code, &key_value, 2081 &autorelease); 2082 if (code == ASUS_WMI_KEY_IGNORE) 2083 return; 2084 } 2085 2086 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 2087 code = ASUS_WMI_BRN_UP; 2088 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 2089 code = ASUS_WMI_BRN_DOWN; 2090 2091 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) { 2092 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 2093 asus_wmi_backlight_notify(asus, orig_code); 2094 return; 2095 } 2096 } 2097 2098 if (code == NOTIFY_KBD_BRTUP) { 2099 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1); 2100 return; 2101 } 2102 if (code == NOTIFY_KBD_BRTDWN) { 2103 kbd_led_set_by_kbd(asus, asus->kbd_led_wk - 1); 2104 return; 2105 } 2106 if (code == NOTIFY_KBD_BRTTOGGLE) { 2107 if (asus->kbd_led_wk == asus->kbd_led.max_brightness) 2108 kbd_led_set_by_kbd(asus, 0); 2109 else 2110 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1); 2111 return; 2112 } 2113 2114 if (code == NOTIFY_FNLOCK_TOGGLE) { 2115 asus->fnlock_locked = !asus->fnlock_locked; 2116 asus_wmi_fnlock_update(asus); 2117 return; 2118 } 2119 2120 if (asus->driver->quirks->use_kbd_dock_devid && code == NOTIFY_KBD_DOCK_CHANGE) { 2121 result = asus_wmi_get_devstate_simple(asus, 2122 ASUS_WMI_DEVID_KBD_DOCK); 2123 if (result >= 0) { 2124 input_report_switch(asus->inputdev, SW_TABLET_MODE, 2125 !result); 2126 input_sync(asus->inputdev); 2127 } 2128 return; 2129 } 2130 2131 if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) { 2132 fan_boost_mode_switch_next(asus); 2133 return; 2134 } 2135 2136 if (asus->throttle_thermal_policy_available && code == NOTIFY_KBD_TTP) { 2137 throttle_thermal_policy_switch_next(asus); 2138 return; 2139 } 2140 2141 if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle) 2142 return; 2143 2144 if (!sparse_keymap_report_event(asus->inputdev, code, 2145 key_value, autorelease)) 2146 pr_info("Unknown key %x pressed\n", code); 2147 } 2148 2149 static void asus_wmi_notify(u32 value, void *context) 2150 { 2151 struct asus_wmi *asus = context; 2152 int code; 2153 int i; 2154 2155 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) { 2156 code = asus_wmi_get_event_code(value); 2157 if (code < 0) { 2158 pr_warn("Failed to get notify code: %d\n", code); 2159 return; 2160 } 2161 2162 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK) 2163 return; 2164 2165 asus_wmi_handle_event_code(code, asus); 2166 2167 /* 2168 * Double check that queue is present: 2169 * ATK (with queue) uses 0xff, ASUSWMI (without) 0xd2. 2170 */ 2171 if (!asus->wmi_event_queue || value != WMI_EVENT_VALUE_ATK) 2172 return; 2173 } 2174 2175 pr_warn("Failed to process event queue, last code: 0x%x\n", code); 2176 } 2177 2178 static int asus_wmi_notify_queue_flush(struct asus_wmi *asus) 2179 { 2180 int code; 2181 int i; 2182 2183 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) { 2184 code = asus_wmi_get_event_code(WMI_EVENT_VALUE_ATK); 2185 if (code < 0) { 2186 pr_warn("Failed to get event during flush: %d\n", code); 2187 return code; 2188 } 2189 2190 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK) 2191 return 0; 2192 } 2193 2194 pr_warn("Failed to flush event queue\n"); 2195 return -EIO; 2196 } 2197 2198 /* Sysfs **********************************************************************/ 2199 2200 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid, 2201 const char *buf, size_t count) 2202 { 2203 u32 retval; 2204 int err, value; 2205 2206 value = asus_wmi_get_devstate_simple(asus, devid); 2207 if (value < 0) 2208 return value; 2209 2210 err = kstrtoint(buf, 0, &value); 2211 if (err) 2212 return err; 2213 2214 err = asus_wmi_set_devstate(devid, value, &retval); 2215 if (err < 0) 2216 return err; 2217 2218 return count; 2219 } 2220 2221 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf) 2222 { 2223 int value = asus_wmi_get_devstate_simple(asus, devid); 2224 2225 if (value < 0) 2226 return value; 2227 2228 return sprintf(buf, "%d\n", value); 2229 } 2230 2231 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ 2232 static ssize_t show_##_name(struct device *dev, \ 2233 struct device_attribute *attr, \ 2234 char *buf) \ 2235 { \ 2236 struct asus_wmi *asus = dev_get_drvdata(dev); \ 2237 \ 2238 return show_sys_wmi(asus, _cm, buf); \ 2239 } \ 2240 static ssize_t store_##_name(struct device *dev, \ 2241 struct device_attribute *attr, \ 2242 const char *buf, size_t count) \ 2243 { \ 2244 struct asus_wmi *asus = dev_get_drvdata(dev); \ 2245 \ 2246 return store_sys_wmi(asus, _cm, buf, count); \ 2247 } \ 2248 static struct device_attribute dev_attr_##_name = { \ 2249 .attr = { \ 2250 .name = __stringify(_name), \ 2251 .mode = _mode }, \ 2252 .show = show_##_name, \ 2253 .store = store_##_name, \ 2254 } 2255 2256 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD); 2257 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA); 2258 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER); 2259 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME); 2260 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE); 2261 2262 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr, 2263 const char *buf, size_t count) 2264 { 2265 int value, rv; 2266 2267 rv = kstrtoint(buf, 0, &value); 2268 if (rv) 2269 return rv; 2270 2271 if (value < 0 || value > 2) 2272 return -EINVAL; 2273 2274 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL); 2275 if (rv < 0) 2276 return rv; 2277 2278 return count; 2279 } 2280 2281 static DEVICE_ATTR_WO(cpufv); 2282 2283 static struct attribute *platform_attributes[] = { 2284 &dev_attr_cpufv.attr, 2285 &dev_attr_camera.attr, 2286 &dev_attr_cardr.attr, 2287 &dev_attr_touchpad.attr, 2288 &dev_attr_lid_resume.attr, 2289 &dev_attr_als_enable.attr, 2290 &dev_attr_fan_boost_mode.attr, 2291 &dev_attr_throttle_thermal_policy.attr, 2292 NULL 2293 }; 2294 2295 static umode_t asus_sysfs_is_visible(struct kobject *kobj, 2296 struct attribute *attr, int idx) 2297 { 2298 struct device *dev = container_of(kobj, struct device, kobj); 2299 struct asus_wmi *asus = dev_get_drvdata(dev); 2300 bool ok = true; 2301 int devid = -1; 2302 2303 if (attr == &dev_attr_camera.attr) 2304 devid = ASUS_WMI_DEVID_CAMERA; 2305 else if (attr == &dev_attr_cardr.attr) 2306 devid = ASUS_WMI_DEVID_CARDREADER; 2307 else if (attr == &dev_attr_touchpad.attr) 2308 devid = ASUS_WMI_DEVID_TOUCHPAD; 2309 else if (attr == &dev_attr_lid_resume.attr) 2310 devid = ASUS_WMI_DEVID_LID_RESUME; 2311 else if (attr == &dev_attr_als_enable.attr) 2312 devid = ASUS_WMI_DEVID_ALS_ENABLE; 2313 else if (attr == &dev_attr_fan_boost_mode.attr) 2314 ok = asus->fan_boost_mode_available; 2315 else if (attr == &dev_attr_throttle_thermal_policy.attr) 2316 ok = asus->throttle_thermal_policy_available; 2317 2318 if (devid != -1) 2319 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0); 2320 2321 return ok ? attr->mode : 0; 2322 } 2323 2324 static const struct attribute_group platform_attribute_group = { 2325 .is_visible = asus_sysfs_is_visible, 2326 .attrs = platform_attributes 2327 }; 2328 2329 static void asus_wmi_sysfs_exit(struct platform_device *device) 2330 { 2331 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); 2332 } 2333 2334 static int asus_wmi_sysfs_init(struct platform_device *device) 2335 { 2336 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); 2337 } 2338 2339 /* Platform device ************************************************************/ 2340 2341 static int asus_wmi_platform_init(struct asus_wmi *asus) 2342 { 2343 struct device *dev = &asus->platform_device->dev; 2344 char *wmi_uid; 2345 int rv; 2346 2347 /* INIT enable hotkeys on some models */ 2348 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv)) 2349 pr_info("Initialization: %#x\n", rv); 2350 2351 /* We don't know yet what to do with this version... */ 2352 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) { 2353 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF); 2354 asus->spec = rv; 2355 } 2356 2357 /* 2358 * The SFUN method probably allows the original driver to get the list 2359 * of features supported by a given model. For now, 0x0100 or 0x0800 2360 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 2361 * The significance of others is yet to be found. 2362 */ 2363 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) { 2364 pr_info("SFUN value: %#x\n", rv); 2365 asus->sfun = rv; 2366 } 2367 2368 /* 2369 * Eee PC and Notebooks seems to have different method_id for DSTS, 2370 * but it may also be related to the BIOS's SPEC. 2371 * Note, on most Eeepc, there is no way to check if a method exist 2372 * or note, while on notebooks, they returns 0xFFFFFFFE on failure, 2373 * but once again, SPEC may probably be used for that kind of things. 2374 * 2375 * Additionally at least TUF Gaming series laptops return nothing for 2376 * unknown methods, so the detection in this way is not possible. 2377 * 2378 * There is strong indication that only ACPI WMI devices that have _UID 2379 * equal to "ASUSWMI" use DCTS whereas those with "ATK" use DSTS. 2380 */ 2381 wmi_uid = wmi_get_acpi_device_uid(ASUS_WMI_MGMT_GUID); 2382 if (!wmi_uid) 2383 return -ENODEV; 2384 2385 if (!strcmp(wmi_uid, ASUS_ACPI_UID_ASUSWMI)) { 2386 dev_info(dev, "Detected ASUSWMI, use DCTS\n"); 2387 asus->dsts_id = ASUS_WMI_METHODID_DCTS; 2388 } else { 2389 dev_info(dev, "Detected %s, not ASUSWMI, use DSTS\n", wmi_uid); 2390 asus->dsts_id = ASUS_WMI_METHODID_DSTS; 2391 } 2392 2393 /* 2394 * Some devices can have multiple event codes stored in a queue before 2395 * the module load if it was unloaded intermittently after calling 2396 * the INIT method (enables event handling). The WMI notify handler is 2397 * expected to retrieve all event codes until a retrieved code equals 2398 * queue end marker (One or Ones). Old codes are flushed from the queue 2399 * upon module load. Not enabling this when it should be has minimal 2400 * visible impact so fall back if anything goes wrong. 2401 */ 2402 wmi_uid = wmi_get_acpi_device_uid(asus->driver->event_guid); 2403 if (wmi_uid && !strcmp(wmi_uid, ASUS_ACPI_UID_ATK)) { 2404 dev_info(dev, "Detected ATK, enable event queue\n"); 2405 2406 if (!asus_wmi_notify_queue_flush(asus)) 2407 asus->wmi_event_queue = true; 2408 } 2409 2410 /* CWAP allow to define the behavior of the Fn+F2 key, 2411 * this method doesn't seems to be present on Eee PCs */ 2412 if (asus->driver->quirks->wapf >= 0) 2413 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP, 2414 asus->driver->quirks->wapf, NULL); 2415 2416 return 0; 2417 } 2418 2419 /* debugfs ********************************************************************/ 2420 2421 struct asus_wmi_debugfs_node { 2422 struct asus_wmi *asus; 2423 char *name; 2424 int (*show) (struct seq_file *m, void *data); 2425 }; 2426 2427 static int show_dsts(struct seq_file *m, void *data) 2428 { 2429 struct asus_wmi *asus = m->private; 2430 int err; 2431 u32 retval = -1; 2432 2433 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval); 2434 if (err < 0) 2435 return err; 2436 2437 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval); 2438 2439 return 0; 2440 } 2441 2442 static int show_devs(struct seq_file *m, void *data) 2443 { 2444 struct asus_wmi *asus = m->private; 2445 int err; 2446 u32 retval = -1; 2447 2448 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param, 2449 &retval); 2450 if (err < 0) 2451 return err; 2452 2453 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id, 2454 asus->debug.ctrl_param, retval); 2455 2456 return 0; 2457 } 2458 2459 static int show_call(struct seq_file *m, void *data) 2460 { 2461 struct asus_wmi *asus = m->private; 2462 struct bios_args args = { 2463 .arg0 = asus->debug.dev_id, 2464 .arg1 = asus->debug.ctrl_param, 2465 }; 2466 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 2467 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 2468 union acpi_object *obj; 2469 acpi_status status; 2470 2471 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 2472 0, asus->debug.method_id, 2473 &input, &output); 2474 2475 if (ACPI_FAILURE(status)) 2476 return -EIO; 2477 2478 obj = (union acpi_object *)output.pointer; 2479 if (obj && obj->type == ACPI_TYPE_INTEGER) 2480 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id, 2481 asus->debug.dev_id, asus->debug.ctrl_param, 2482 (u32) obj->integer.value); 2483 else 2484 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id, 2485 asus->debug.dev_id, asus->debug.ctrl_param, 2486 obj ? obj->type : -1); 2487 2488 kfree(obj); 2489 2490 return 0; 2491 } 2492 2493 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = { 2494 {NULL, "devs", show_devs}, 2495 {NULL, "dsts", show_dsts}, 2496 {NULL, "call", show_call}, 2497 }; 2498 2499 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file) 2500 { 2501 struct asus_wmi_debugfs_node *node = inode->i_private; 2502 2503 return single_open(file, node->show, node->asus); 2504 } 2505 2506 static const struct file_operations asus_wmi_debugfs_io_ops = { 2507 .owner = THIS_MODULE, 2508 .open = asus_wmi_debugfs_open, 2509 .read = seq_read, 2510 .llseek = seq_lseek, 2511 .release = single_release, 2512 }; 2513 2514 static void asus_wmi_debugfs_exit(struct asus_wmi *asus) 2515 { 2516 debugfs_remove_recursive(asus->debug.root); 2517 } 2518 2519 static void asus_wmi_debugfs_init(struct asus_wmi *asus) 2520 { 2521 int i; 2522 2523 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL); 2524 2525 debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, asus->debug.root, 2526 &asus->debug.method_id); 2527 2528 debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, asus->debug.root, 2529 &asus->debug.dev_id); 2530 2531 debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, asus->debug.root, 2532 &asus->debug.ctrl_param); 2533 2534 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) { 2535 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i]; 2536 2537 node->asus = asus; 2538 debugfs_create_file(node->name, S_IFREG | S_IRUGO, 2539 asus->debug.root, node, 2540 &asus_wmi_debugfs_io_ops); 2541 } 2542 } 2543 2544 /* Init / exit ****************************************************************/ 2545 2546 static int asus_wmi_add(struct platform_device *pdev) 2547 { 2548 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2549 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2550 struct asus_wmi *asus; 2551 const char *chassis_type; 2552 acpi_status status; 2553 int err; 2554 u32 result; 2555 2556 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL); 2557 if (!asus) 2558 return -ENOMEM; 2559 2560 asus->driver = wdrv; 2561 asus->platform_device = pdev; 2562 wdrv->platform_device = pdev; 2563 platform_set_drvdata(asus->platform_device, asus); 2564 2565 if (wdrv->detect_quirks) 2566 wdrv->detect_quirks(asus->driver); 2567 2568 err = asus_wmi_platform_init(asus); 2569 if (err) 2570 goto fail_platform; 2571 2572 err = fan_boost_mode_check_present(asus); 2573 if (err) 2574 goto fail_fan_boost_mode; 2575 2576 err = throttle_thermal_policy_check_present(asus); 2577 if (err) 2578 goto fail_throttle_thermal_policy; 2579 else 2580 throttle_thermal_policy_set_default(asus); 2581 2582 err = asus_wmi_sysfs_init(asus->platform_device); 2583 if (err) 2584 goto fail_sysfs; 2585 2586 err = asus_wmi_input_init(asus); 2587 if (err) 2588 goto fail_input; 2589 2590 err = asus_wmi_fan_init(asus); /* probably no problems on error */ 2591 2592 err = asus_wmi_hwmon_init(asus); 2593 if (err) 2594 goto fail_hwmon; 2595 2596 err = asus_wmi_led_init(asus); 2597 if (err) 2598 goto fail_leds; 2599 2600 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result); 2601 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT)) 2602 asus->driver->wlan_ctrl_by_user = 1; 2603 2604 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) { 2605 err = asus_wmi_rfkill_init(asus); 2606 if (err) 2607 goto fail_rfkill; 2608 } 2609 2610 if (asus->driver->quirks->wmi_force_als_set) 2611 asus_wmi_set_als(); 2612 2613 /* Some Asus desktop boards export an acpi-video backlight interface, 2614 stop this from showing up */ 2615 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); 2616 if (chassis_type && !strcmp(chassis_type, "3")) 2617 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2618 2619 if (asus->driver->quirks->wmi_backlight_power) 2620 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2621 2622 if (asus->driver->quirks->wmi_backlight_native) 2623 acpi_video_set_dmi_backlight_type(acpi_backlight_native); 2624 2625 if (asus->driver->quirks->xusb2pr) 2626 asus_wmi_set_xusb2pr(asus); 2627 2628 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 2629 err = asus_wmi_backlight_init(asus); 2630 if (err && err != -ENODEV) 2631 goto fail_backlight; 2632 } else if (asus->driver->quirks->wmi_backlight_set_devstate) 2633 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL); 2634 2635 if (asus_wmi_has_fnlock_key(asus)) { 2636 asus->fnlock_locked = true; 2637 asus_wmi_fnlock_update(asus); 2638 } 2639 2640 status = wmi_install_notify_handler(asus->driver->event_guid, 2641 asus_wmi_notify, asus); 2642 if (ACPI_FAILURE(status)) { 2643 pr_err("Unable to register notify handler - %d\n", status); 2644 err = -ENODEV; 2645 goto fail_wmi_handler; 2646 } 2647 2648 asus_wmi_battery_init(asus); 2649 2650 asus_wmi_debugfs_init(asus); 2651 2652 return 0; 2653 2654 fail_wmi_handler: 2655 asus_wmi_backlight_exit(asus); 2656 fail_backlight: 2657 asus_wmi_rfkill_exit(asus); 2658 fail_rfkill: 2659 asus_wmi_led_exit(asus); 2660 fail_leds: 2661 fail_hwmon: 2662 asus_wmi_input_exit(asus); 2663 fail_input: 2664 asus_wmi_sysfs_exit(asus->platform_device); 2665 fail_sysfs: 2666 fail_throttle_thermal_policy: 2667 fail_fan_boost_mode: 2668 fail_platform: 2669 kfree(asus); 2670 return err; 2671 } 2672 2673 static int asus_wmi_remove(struct platform_device *device) 2674 { 2675 struct asus_wmi *asus; 2676 2677 asus = platform_get_drvdata(device); 2678 wmi_remove_notify_handler(asus->driver->event_guid); 2679 asus_wmi_backlight_exit(asus); 2680 asus_wmi_input_exit(asus); 2681 asus_wmi_led_exit(asus); 2682 asus_wmi_rfkill_exit(asus); 2683 asus_wmi_debugfs_exit(asus); 2684 asus_wmi_sysfs_exit(asus->platform_device); 2685 asus_fan_set_auto(asus); 2686 asus_wmi_battery_exit(asus); 2687 2688 kfree(asus); 2689 return 0; 2690 } 2691 2692 /* Platform driver - hibernate/resume callbacks *******************************/ 2693 2694 static int asus_hotk_thaw(struct device *device) 2695 { 2696 struct asus_wmi *asus = dev_get_drvdata(device); 2697 2698 if (asus->wlan.rfkill) { 2699 bool wlan; 2700 2701 /* 2702 * Work around bios bug - acpi _PTS turns off the wireless led 2703 * during suspend. Normally it restores it on resume, but 2704 * we should kick it ourselves in case hibernation is aborted. 2705 */ 2706 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 2707 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL); 2708 } 2709 2710 return 0; 2711 } 2712 2713 static int asus_hotk_resume(struct device *device) 2714 { 2715 struct asus_wmi *asus = dev_get_drvdata(device); 2716 2717 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2718 kbd_led_update(asus); 2719 2720 if (asus_wmi_has_fnlock_key(asus)) 2721 asus_wmi_fnlock_update(asus); 2722 return 0; 2723 } 2724 2725 static int asus_hotk_restore(struct device *device) 2726 { 2727 struct asus_wmi *asus = dev_get_drvdata(device); 2728 int bl; 2729 2730 /* Refresh both wlan rfkill state and pci hotplug */ 2731 if (asus->wlan.rfkill) 2732 asus_rfkill_hotplug(asus); 2733 2734 if (asus->bluetooth.rfkill) { 2735 bl = !asus_wmi_get_devstate_simple(asus, 2736 ASUS_WMI_DEVID_BLUETOOTH); 2737 rfkill_set_sw_state(asus->bluetooth.rfkill, bl); 2738 } 2739 if (asus->wimax.rfkill) { 2740 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX); 2741 rfkill_set_sw_state(asus->wimax.rfkill, bl); 2742 } 2743 if (asus->wwan3g.rfkill) { 2744 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G); 2745 rfkill_set_sw_state(asus->wwan3g.rfkill, bl); 2746 } 2747 if (asus->gps.rfkill) { 2748 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS); 2749 rfkill_set_sw_state(asus->gps.rfkill, bl); 2750 } 2751 if (asus->uwb.rfkill) { 2752 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB); 2753 rfkill_set_sw_state(asus->uwb.rfkill, bl); 2754 } 2755 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2756 kbd_led_update(asus); 2757 2758 if (asus_wmi_has_fnlock_key(asus)) 2759 asus_wmi_fnlock_update(asus); 2760 return 0; 2761 } 2762 2763 static const struct dev_pm_ops asus_pm_ops = { 2764 .thaw = asus_hotk_thaw, 2765 .restore = asus_hotk_restore, 2766 .resume = asus_hotk_resume, 2767 }; 2768 2769 /* Registration ***************************************************************/ 2770 2771 static int asus_wmi_probe(struct platform_device *pdev) 2772 { 2773 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2774 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2775 int ret; 2776 2777 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 2778 pr_warn("ASUS Management GUID not found\n"); 2779 return -ENODEV; 2780 } 2781 2782 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) { 2783 pr_warn("ASUS Event GUID not found\n"); 2784 return -ENODEV; 2785 } 2786 2787 if (wdrv->probe) { 2788 ret = wdrv->probe(pdev); 2789 if (ret) 2790 return ret; 2791 } 2792 2793 return asus_wmi_add(pdev); 2794 } 2795 2796 static bool used; 2797 2798 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver) 2799 { 2800 struct platform_driver *platform_driver; 2801 struct platform_device *platform_device; 2802 2803 if (used) 2804 return -EBUSY; 2805 2806 platform_driver = &driver->platform_driver; 2807 platform_driver->remove = asus_wmi_remove; 2808 platform_driver->driver.owner = driver->owner; 2809 platform_driver->driver.name = driver->name; 2810 platform_driver->driver.pm = &asus_pm_ops; 2811 2812 platform_device = platform_create_bundle(platform_driver, 2813 asus_wmi_probe, 2814 NULL, 0, NULL, 0); 2815 if (IS_ERR(platform_device)) 2816 return PTR_ERR(platform_device); 2817 2818 used = true; 2819 return 0; 2820 } 2821 EXPORT_SYMBOL_GPL(asus_wmi_register_driver); 2822 2823 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver) 2824 { 2825 platform_device_unregister(driver->platform_device); 2826 platform_driver_unregister(&driver->platform_driver); 2827 used = false; 2828 } 2829 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver); 2830 2831 static int __init asus_wmi_init(void) 2832 { 2833 pr_info("ASUS WMI generic driver loaded\n"); 2834 return 0; 2835 } 2836 2837 static void __exit asus_wmi_exit(void) 2838 { 2839 pr_info("ASUS WMI generic driver unloaded\n"); 2840 } 2841 2842 module_init(asus_wmi_init); 2843 module_exit(asus_wmi_exit); 2844