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