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