1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Asus PC WMI hotkey driver 4 * 5 * Copyright(C) 2010 Intel Corporation. 6 * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com> 7 * 8 * Portions based on wistron_btns.c: 9 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz> 10 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org> 11 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru> 12 */ 13 14 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 15 16 #include <linux/kernel.h> 17 #include <linux/module.h> 18 #include <linux/init.h> 19 #include <linux/types.h> 20 #include <linux/slab.h> 21 #include <linux/input.h> 22 #include <linux/input/sparse-keymap.h> 23 #include <linux/fb.h> 24 #include <linux/backlight.h> 25 #include <linux/leds.h> 26 #include <linux/rfkill.h> 27 #include <linux/pci.h> 28 #include <linux/pci_hotplug.h> 29 #include <linux/power_supply.h> 30 #include <linux/hwmon.h> 31 #include <linux/hwmon-sysfs.h> 32 #include <linux/debugfs.h> 33 #include <linux/seq_file.h> 34 #include <linux/platform_data/x86/asus-wmi.h> 35 #include <linux/platform_device.h> 36 #include <linux/acpi.h> 37 #include <linux/dmi.h> 38 #include <linux/units.h> 39 40 #include <acpi/battery.h> 41 #include <acpi/video.h> 42 43 #include "asus-wmi.h" 44 45 MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, " 46 "Yong Wang <yong.y.wang@intel.com>"); 47 MODULE_DESCRIPTION("Asus Generic WMI Driver"); 48 MODULE_LICENSE("GPL"); 49 50 #define to_asus_wmi_driver(pdrv) \ 51 (container_of((pdrv), struct asus_wmi_driver, platform_driver)) 52 53 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66" 54 55 #define NOTIFY_BRNUP_MIN 0x11 56 #define NOTIFY_BRNUP_MAX 0x1f 57 #define NOTIFY_BRNDOWN_MIN 0x20 58 #define NOTIFY_BRNDOWN_MAX 0x2e 59 #define NOTIFY_FNLOCK_TOGGLE 0x4e 60 #define NOTIFY_KBD_DOCK_CHANGE 0x75 61 #define NOTIFY_KBD_BRTUP 0xc4 62 #define NOTIFY_KBD_BRTDWN 0xc5 63 #define NOTIFY_KBD_BRTTOGGLE 0xc7 64 #define NOTIFY_KBD_FBM 0x99 65 #define NOTIFY_KBD_TTP 0xae 66 67 #define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0) 68 69 #define ASUS_FAN_DESC "cpu_fan" 70 #define ASUS_FAN_MFUN 0x13 71 #define ASUS_FAN_SFUN_READ 0x06 72 #define ASUS_FAN_SFUN_WRITE 0x07 73 74 /* Based on standard hwmon pwmX_enable values */ 75 #define ASUS_FAN_CTRL_FULLSPEED 0 76 #define ASUS_FAN_CTRL_MANUAL 1 77 #define ASUS_FAN_CTRL_AUTO 2 78 79 #define ASUS_FAN_BOOST_MODE_NORMAL 0 80 #define ASUS_FAN_BOOST_MODE_OVERBOOST 1 81 #define ASUS_FAN_BOOST_MODE_OVERBOOST_MASK 0x01 82 #define ASUS_FAN_BOOST_MODE_SILENT 2 83 #define ASUS_FAN_BOOST_MODE_SILENT_MASK 0x02 84 #define ASUS_FAN_BOOST_MODES_MASK 0x03 85 86 #define ASUS_THROTTLE_THERMAL_POLICY_DEFAULT 0 87 #define ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST 1 88 #define ASUS_THROTTLE_THERMAL_POLICY_SILENT 2 89 90 #define USB_INTEL_XUSB2PR 0xD0 91 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31 92 93 #define ASUS_ACPI_UID_ASUSWMI "ASUSWMI" 94 #define ASUS_ACPI_UID_ATK "ATK" 95 96 #define WMI_EVENT_QUEUE_SIZE 0x10 97 #define WMI_EVENT_QUEUE_END 0x1 98 #define WMI_EVENT_MASK 0xFFFF 99 /* The WMI hotkey event value is always the same. */ 100 #define WMI_EVENT_VALUE_ATK 0xFF 101 102 #define WMI_EVENT_MASK 0xFFFF 103 104 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL }; 105 106 static bool ashs_present(void) 107 { 108 int i = 0; 109 while (ashs_ids[i]) { 110 if (acpi_dev_found(ashs_ids[i++])) 111 return true; 112 } 113 return false; 114 } 115 116 struct bios_args { 117 u32 arg0; 118 u32 arg1; 119 u32 arg2; /* At least TUF Gaming series uses 3 dword input buffer. */ 120 u32 arg4; 121 u32 arg5; 122 } __packed; 123 124 /* 125 * Struct that's used for all methods called via AGFN. Naming is 126 * identically to the AML code. 127 */ 128 struct agfn_args { 129 u16 mfun; /* probably "Multi-function" to be called */ 130 u16 sfun; /* probably "Sub-function" to be called */ 131 u16 len; /* size of the hole struct, including subfunction fields */ 132 u8 stas; /* not used by now */ 133 u8 err; /* zero on success */ 134 } __packed; 135 136 /* struct used for calling fan read and write methods */ 137 struct agfn_fan_args { 138 struct agfn_args agfn; /* common fields */ 139 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */ 140 u32 speed; /* read: RPM/100 - write: 0-255 */ 141 } __packed; 142 143 /* 144 * <platform>/ - debugfs root directory 145 * dev_id - current dev_id 146 * ctrl_param - current ctrl_param 147 * method_id - current method_id 148 * devs - call DEVS(dev_id, ctrl_param) and print result 149 * dsts - call DSTS(dev_id) and print result 150 * call - call method_id(dev_id, ctrl_param) and print result 151 */ 152 struct asus_wmi_debug { 153 struct dentry *root; 154 u32 method_id; 155 u32 dev_id; 156 u32 ctrl_param; 157 }; 158 159 struct asus_rfkill { 160 struct asus_wmi *asus; 161 struct rfkill *rfkill; 162 u32 dev_id; 163 }; 164 165 enum fan_type { 166 FAN_TYPE_NONE = 0, 167 FAN_TYPE_AGFN, /* deprecated on newer platforms */ 168 FAN_TYPE_SPEC83, /* starting in Spec 8.3, use CPU_FAN_CTRL */ 169 }; 170 171 struct asus_wmi { 172 int dsts_id; 173 int spec; 174 int sfun; 175 bool wmi_event_queue; 176 177 struct input_dev *inputdev; 178 struct backlight_device *backlight_device; 179 struct platform_device *platform_device; 180 181 struct led_classdev wlan_led; 182 int wlan_led_wk; 183 struct led_classdev tpd_led; 184 int tpd_led_wk; 185 struct led_classdev kbd_led; 186 int kbd_led_wk; 187 struct led_classdev lightbar_led; 188 int lightbar_led_wk; 189 struct workqueue_struct *led_workqueue; 190 struct work_struct tpd_led_work; 191 struct work_struct wlan_led_work; 192 struct work_struct lightbar_led_work; 193 194 struct asus_rfkill wlan; 195 struct asus_rfkill bluetooth; 196 struct asus_rfkill wimax; 197 struct asus_rfkill wwan3g; 198 struct asus_rfkill gps; 199 struct asus_rfkill uwb; 200 201 enum fan_type fan_type; 202 int fan_pwm_mode; 203 int agfn_pwm; 204 205 bool fan_boost_mode_available; 206 u8 fan_boost_mode_mask; 207 u8 fan_boost_mode; 208 209 bool throttle_thermal_policy_available; 210 u8 throttle_thermal_policy_mode; 211 212 // The RSOC controls the maximum charging percentage. 213 bool battery_rsoc_available; 214 215 struct hotplug_slot hotplug_slot; 216 struct mutex hotplug_lock; 217 struct mutex wmi_lock; 218 struct workqueue_struct *hotplug_workqueue; 219 struct work_struct hotplug_work; 220 221 bool fnlock_locked; 222 223 struct asus_wmi_debug debug; 224 225 struct asus_wmi_driver *driver; 226 }; 227 228 /* WMI ************************************************************************/ 229 230 static int asus_wmi_evaluate_method3(u32 method_id, 231 u32 arg0, u32 arg1, u32 arg2, u32 *retval) 232 { 233 struct bios_args args = { 234 .arg0 = arg0, 235 .arg1 = arg1, 236 .arg2 = arg2, 237 }; 238 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 239 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 240 acpi_status status; 241 union acpi_object *obj; 242 u32 tmp = 0; 243 244 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id, 245 &input, &output); 246 247 if (ACPI_FAILURE(status)) 248 return -EIO; 249 250 obj = (union acpi_object *)output.pointer; 251 if (obj && obj->type == ACPI_TYPE_INTEGER) 252 tmp = (u32) obj->integer.value; 253 254 if (retval) 255 *retval = tmp; 256 257 kfree(obj); 258 259 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD) 260 return -ENODEV; 261 262 return 0; 263 } 264 265 int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval) 266 { 267 return asus_wmi_evaluate_method3(method_id, arg0, arg1, 0, retval); 268 } 269 EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method); 270 271 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args) 272 { 273 struct acpi_buffer input; 274 u64 phys_addr; 275 u32 retval; 276 u32 status; 277 278 /* 279 * Copy to dma capable address otherwise memory corruption occurs as 280 * bios has to be able to access it. 281 */ 282 input.pointer = kmemdup(args.pointer, args.length, GFP_DMA | GFP_KERNEL); 283 input.length = args.length; 284 if (!input.pointer) 285 return -ENOMEM; 286 phys_addr = virt_to_phys(input.pointer); 287 288 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN, 289 phys_addr, 0, &retval); 290 if (!status) 291 memcpy(args.pointer, input.pointer, args.length); 292 293 kfree(input.pointer); 294 if (status) 295 return -ENXIO; 296 297 return retval; 298 } 299 300 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval) 301 { 302 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval); 303 } 304 305 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, 306 u32 *retval) 307 { 308 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id, 309 ctrl_param, retval); 310 } 311 312 /* Helper for special devices with magic return codes */ 313 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus, 314 u32 dev_id, u32 mask) 315 { 316 u32 retval = 0; 317 int err; 318 319 err = asus_wmi_get_devstate(asus, dev_id, &retval); 320 if (err < 0) 321 return err; 322 323 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT)) 324 return -ENODEV; 325 326 if (mask == ASUS_WMI_DSTS_STATUS_BIT) { 327 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT) 328 return -ENODEV; 329 } 330 331 return retval & mask; 332 } 333 334 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id) 335 { 336 return asus_wmi_get_devstate_bits(asus, dev_id, 337 ASUS_WMI_DSTS_STATUS_BIT); 338 } 339 340 static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id) 341 { 342 u32 retval; 343 int status = asus_wmi_get_devstate(asus, dev_id, &retval); 344 345 return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT); 346 } 347 348 /* Input **********************************************************************/ 349 350 static int asus_wmi_input_init(struct asus_wmi *asus) 351 { 352 int err, result; 353 354 asus->inputdev = input_allocate_device(); 355 if (!asus->inputdev) 356 return -ENOMEM; 357 358 asus->inputdev->name = asus->driver->input_name; 359 asus->inputdev->phys = asus->driver->input_phys; 360 asus->inputdev->id.bustype = BUS_HOST; 361 asus->inputdev->dev.parent = &asus->platform_device->dev; 362 set_bit(EV_REP, asus->inputdev->evbit); 363 364 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL); 365 if (err) 366 goto err_free_dev; 367 368 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_KBD_DOCK); 369 if (result >= 0) { 370 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE); 371 input_report_switch(asus->inputdev, SW_TABLET_MODE, !result); 372 } else if (result != -ENODEV) { 373 pr_err("Error checking for keyboard-dock: %d\n", result); 374 } 375 376 err = input_register_device(asus->inputdev); 377 if (err) 378 goto err_free_dev; 379 380 return 0; 381 382 err_free_dev: 383 input_free_device(asus->inputdev); 384 return err; 385 } 386 387 static void asus_wmi_input_exit(struct asus_wmi *asus) 388 { 389 if (asus->inputdev) 390 input_unregister_device(asus->inputdev); 391 392 asus->inputdev = NULL; 393 } 394 395 /* Battery ********************************************************************/ 396 397 /* The battery maximum charging percentage */ 398 static int charge_end_threshold; 399 400 static ssize_t charge_control_end_threshold_store(struct device *dev, 401 struct device_attribute *attr, 402 const char *buf, size_t count) 403 { 404 int value, ret, rv; 405 406 ret = kstrtouint(buf, 10, &value); 407 if (ret) 408 return ret; 409 410 if (value < 0 || value > 100) 411 return -EINVAL; 412 413 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv); 414 if (ret) 415 return ret; 416 417 if (rv != 1) 418 return -EIO; 419 420 /* There isn't any method in the DSDT to read the threshold, so we 421 * save the threshold. 422 */ 423 charge_end_threshold = value; 424 return count; 425 } 426 427 static ssize_t charge_control_end_threshold_show(struct device *device, 428 struct device_attribute *attr, 429 char *buf) 430 { 431 return sprintf(buf, "%d\n", charge_end_threshold); 432 } 433 434 static DEVICE_ATTR_RW(charge_control_end_threshold); 435 436 static int asus_wmi_battery_add(struct power_supply *battery) 437 { 438 /* The WMI method does not provide a way to specific a battery, so we 439 * just assume it is the first battery. 440 * Note: On some newer ASUS laptops (Zenbook UM431DA), the primary/first 441 * battery is named BATT. 442 */ 443 if (strcmp(battery->desc->name, "BAT0") != 0 && 444 strcmp(battery->desc->name, "BAT1") != 0 && 445 strcmp(battery->desc->name, "BATT") != 0) 446 return -ENODEV; 447 448 if (device_create_file(&battery->dev, 449 &dev_attr_charge_control_end_threshold)) 450 return -ENODEV; 451 452 /* The charge threshold is only reset when the system is power cycled, 453 * and we can't get the current threshold so let set it to 100% when 454 * a battery is added. 455 */ 456 asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL); 457 charge_end_threshold = 100; 458 459 return 0; 460 } 461 462 static int asus_wmi_battery_remove(struct power_supply *battery) 463 { 464 device_remove_file(&battery->dev, 465 &dev_attr_charge_control_end_threshold); 466 return 0; 467 } 468 469 static struct acpi_battery_hook battery_hook = { 470 .add_battery = asus_wmi_battery_add, 471 .remove_battery = asus_wmi_battery_remove, 472 .name = "ASUS Battery Extension", 473 }; 474 475 static void asus_wmi_battery_init(struct asus_wmi *asus) 476 { 477 asus->battery_rsoc_available = false; 478 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) { 479 asus->battery_rsoc_available = true; 480 battery_hook_register(&battery_hook); 481 } 482 } 483 484 static void asus_wmi_battery_exit(struct asus_wmi *asus) 485 { 486 if (asus->battery_rsoc_available) 487 battery_hook_unregister(&battery_hook); 488 } 489 490 /* LEDs ***********************************************************************/ 491 492 /* 493 * These functions actually update the LED's, and are called from a 494 * workqueue. By doing this as separate work rather than when the LED 495 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 496 * potentially bad time, such as a timer interrupt. 497 */ 498 static void tpd_led_update(struct work_struct *work) 499 { 500 int ctrl_param; 501 struct asus_wmi *asus; 502 503 asus = container_of(work, struct asus_wmi, tpd_led_work); 504 505 ctrl_param = asus->tpd_led_wk; 506 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL); 507 } 508 509 static void tpd_led_set(struct led_classdev *led_cdev, 510 enum led_brightness value) 511 { 512 struct asus_wmi *asus; 513 514 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 515 516 asus->tpd_led_wk = !!value; 517 queue_work(asus->led_workqueue, &asus->tpd_led_work); 518 } 519 520 static int read_tpd_led_state(struct asus_wmi *asus) 521 { 522 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED); 523 } 524 525 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) 526 { 527 struct asus_wmi *asus; 528 529 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 530 531 return read_tpd_led_state(asus); 532 } 533 534 static void kbd_led_update(struct asus_wmi *asus) 535 { 536 int ctrl_param = 0; 537 538 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F); 539 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL); 540 } 541 542 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env) 543 { 544 int retval; 545 546 /* 547 * bits 0-2: level 548 * bit 7: light on/off 549 * bit 8-10: environment (0: dark, 1: normal, 2: light) 550 * bit 17: status unknown 551 */ 552 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT, 553 0xFFFF); 554 555 /* Unknown status is considered as off */ 556 if (retval == 0x8000) 557 retval = 0; 558 559 if (retval < 0) 560 return retval; 561 562 if (level) 563 *level = retval & 0x7F; 564 if (env) 565 *env = (retval >> 8) & 0x7F; 566 return 0; 567 } 568 569 static void do_kbd_led_set(struct led_classdev *led_cdev, int value) 570 { 571 struct asus_wmi *asus; 572 int max_level; 573 574 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 575 max_level = asus->kbd_led.max_brightness; 576 577 asus->kbd_led_wk = clamp_val(value, 0, max_level); 578 kbd_led_update(asus); 579 } 580 581 static void kbd_led_set(struct led_classdev *led_cdev, 582 enum led_brightness value) 583 { 584 /* Prevent disabling keyboard backlight on module unregister */ 585 if (led_cdev->flags & LED_UNREGISTERING) 586 return; 587 588 do_kbd_led_set(led_cdev, value); 589 } 590 591 static void kbd_led_set_by_kbd(struct asus_wmi *asus, enum led_brightness value) 592 { 593 struct led_classdev *led_cdev = &asus->kbd_led; 594 595 do_kbd_led_set(led_cdev, value); 596 led_classdev_notify_brightness_hw_changed(led_cdev, asus->kbd_led_wk); 597 } 598 599 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev) 600 { 601 struct asus_wmi *asus; 602 int retval, value; 603 604 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 605 606 retval = kbd_led_read(asus, &value, NULL); 607 if (retval < 0) 608 return retval; 609 610 return value; 611 } 612 613 static int wlan_led_unknown_state(struct asus_wmi *asus) 614 { 615 u32 result; 616 617 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 618 619 return result & ASUS_WMI_DSTS_UNKNOWN_BIT; 620 } 621 622 static void wlan_led_update(struct work_struct *work) 623 { 624 int ctrl_param; 625 struct asus_wmi *asus; 626 627 asus = container_of(work, struct asus_wmi, wlan_led_work); 628 629 ctrl_param = asus->wlan_led_wk; 630 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL); 631 } 632 633 static void wlan_led_set(struct led_classdev *led_cdev, 634 enum led_brightness value) 635 { 636 struct asus_wmi *asus; 637 638 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 639 640 asus->wlan_led_wk = !!value; 641 queue_work(asus->led_workqueue, &asus->wlan_led_work); 642 } 643 644 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev) 645 { 646 struct asus_wmi *asus; 647 u32 result; 648 649 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 650 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 651 652 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 653 } 654 655 static void lightbar_led_update(struct work_struct *work) 656 { 657 struct asus_wmi *asus; 658 int ctrl_param; 659 660 asus = container_of(work, struct asus_wmi, lightbar_led_work); 661 662 ctrl_param = asus->lightbar_led_wk; 663 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL); 664 } 665 666 static void lightbar_led_set(struct led_classdev *led_cdev, 667 enum led_brightness value) 668 { 669 struct asus_wmi *asus; 670 671 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 672 673 asus->lightbar_led_wk = !!value; 674 queue_work(asus->led_workqueue, &asus->lightbar_led_work); 675 } 676 677 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev) 678 { 679 struct asus_wmi *asus; 680 u32 result; 681 682 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 683 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result); 684 685 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK; 686 } 687 688 static void asus_wmi_led_exit(struct asus_wmi *asus) 689 { 690 led_classdev_unregister(&asus->kbd_led); 691 led_classdev_unregister(&asus->tpd_led); 692 led_classdev_unregister(&asus->wlan_led); 693 led_classdev_unregister(&asus->lightbar_led); 694 695 if (asus->led_workqueue) 696 destroy_workqueue(asus->led_workqueue); 697 } 698 699 static int asus_wmi_led_init(struct asus_wmi *asus) 700 { 701 int rv = 0, led_val; 702 703 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 704 if (!asus->led_workqueue) 705 return -ENOMEM; 706 707 if (read_tpd_led_state(asus) >= 0) { 708 INIT_WORK(&asus->tpd_led_work, tpd_led_update); 709 710 asus->tpd_led.name = "asus::touchpad"; 711 asus->tpd_led.brightness_set = tpd_led_set; 712 asus->tpd_led.brightness_get = tpd_led_get; 713 asus->tpd_led.max_brightness = 1; 714 715 rv = led_classdev_register(&asus->platform_device->dev, 716 &asus->tpd_led); 717 if (rv) 718 goto error; 719 } 720 721 if (!kbd_led_read(asus, &led_val, NULL)) { 722 asus->kbd_led_wk = led_val; 723 asus->kbd_led.name = "asus::kbd_backlight"; 724 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED; 725 asus->kbd_led.brightness_set = kbd_led_set; 726 asus->kbd_led.brightness_get = kbd_led_get; 727 asus->kbd_led.max_brightness = 3; 728 729 rv = led_classdev_register(&asus->platform_device->dev, 730 &asus->kbd_led); 731 if (rv) 732 goto error; 733 } 734 735 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_WIRELESS_LED) 736 && (asus->driver->quirks->wapf > 0)) { 737 INIT_WORK(&asus->wlan_led_work, wlan_led_update); 738 739 asus->wlan_led.name = "asus::wlan"; 740 asus->wlan_led.brightness_set = wlan_led_set; 741 if (!wlan_led_unknown_state(asus)) 742 asus->wlan_led.brightness_get = wlan_led_get; 743 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME; 744 asus->wlan_led.max_brightness = 1; 745 asus->wlan_led.default_trigger = "asus-wlan"; 746 747 rv = led_classdev_register(&asus->platform_device->dev, 748 &asus->wlan_led); 749 if (rv) 750 goto error; 751 } 752 753 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_LIGHTBAR)) { 754 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update); 755 756 asus->lightbar_led.name = "asus::lightbar"; 757 asus->lightbar_led.brightness_set = lightbar_led_set; 758 asus->lightbar_led.brightness_get = lightbar_led_get; 759 asus->lightbar_led.max_brightness = 1; 760 761 rv = led_classdev_register(&asus->platform_device->dev, 762 &asus->lightbar_led); 763 } 764 765 error: 766 if (rv) 767 asus_wmi_led_exit(asus); 768 769 return rv; 770 } 771 772 /* RF *************************************************************************/ 773 774 /* 775 * PCI hotplug (for wlan rfkill) 776 */ 777 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus) 778 { 779 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 780 781 if (result < 0) 782 return false; 783 return !result; 784 } 785 786 static void asus_rfkill_hotplug(struct asus_wmi *asus) 787 { 788 struct pci_dev *dev; 789 struct pci_bus *bus; 790 bool blocked; 791 bool absent; 792 u32 l; 793 794 mutex_lock(&asus->wmi_lock); 795 blocked = asus_wlan_rfkill_blocked(asus); 796 mutex_unlock(&asus->wmi_lock); 797 798 mutex_lock(&asus->hotplug_lock); 799 pci_lock_rescan_remove(); 800 801 if (asus->wlan.rfkill) 802 rfkill_set_sw_state(asus->wlan.rfkill, blocked); 803 804 if (asus->hotplug_slot.ops) { 805 bus = pci_find_bus(0, 1); 806 if (!bus) { 807 pr_warn("Unable to find PCI bus 1?\n"); 808 goto out_unlock; 809 } 810 811 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) { 812 pr_err("Unable to read PCI config space?\n"); 813 goto out_unlock; 814 } 815 absent = (l == 0xffffffff); 816 817 if (blocked != absent) { 818 pr_warn("BIOS says wireless lan is %s, " 819 "but the pci device is %s\n", 820 blocked ? "blocked" : "unblocked", 821 absent ? "absent" : "present"); 822 pr_warn("skipped wireless hotplug as probably " 823 "inappropriate for this model\n"); 824 goto out_unlock; 825 } 826 827 if (!blocked) { 828 dev = pci_get_slot(bus, 0); 829 if (dev) { 830 /* Device already present */ 831 pci_dev_put(dev); 832 goto out_unlock; 833 } 834 dev = pci_scan_single_device(bus, 0); 835 if (dev) { 836 pci_bus_assign_resources(bus); 837 pci_bus_add_device(dev); 838 } 839 } else { 840 dev = pci_get_slot(bus, 0); 841 if (dev) { 842 pci_stop_and_remove_bus_device(dev); 843 pci_dev_put(dev); 844 } 845 } 846 } 847 848 out_unlock: 849 pci_unlock_rescan_remove(); 850 mutex_unlock(&asus->hotplug_lock); 851 } 852 853 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data) 854 { 855 struct asus_wmi *asus = data; 856 857 if (event != ACPI_NOTIFY_BUS_CHECK) 858 return; 859 860 /* 861 * We can't call directly asus_rfkill_hotplug because most 862 * of the time WMBC is still being executed and not reetrant. 863 * There is currently no way to tell ACPICA that we want this 864 * method to be serialized, we schedule a asus_rfkill_hotplug 865 * call later, in a safer context. 866 */ 867 queue_work(asus->hotplug_workqueue, &asus->hotplug_work); 868 } 869 870 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node) 871 { 872 acpi_status status; 873 acpi_handle handle; 874 875 status = acpi_get_handle(NULL, node, &handle); 876 if (ACPI_FAILURE(status)) 877 return -ENODEV; 878 879 status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY, 880 asus_rfkill_notify, asus); 881 if (ACPI_FAILURE(status)) 882 pr_warn("Failed to register notify on %s\n", node); 883 884 return 0; 885 } 886 887 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node) 888 { 889 acpi_status status = AE_OK; 890 acpi_handle handle; 891 892 status = acpi_get_handle(NULL, node, &handle); 893 if (ACPI_FAILURE(status)) 894 return; 895 896 status = acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY, 897 asus_rfkill_notify); 898 if (ACPI_FAILURE(status)) 899 pr_err("Error removing rfkill notify handler %s\n", node); 900 } 901 902 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot, 903 u8 *value) 904 { 905 struct asus_wmi *asus = container_of(hotplug_slot, 906 struct asus_wmi, hotplug_slot); 907 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 908 909 if (result < 0) 910 return result; 911 912 *value = !!result; 913 return 0; 914 } 915 916 static const struct hotplug_slot_ops asus_hotplug_slot_ops = { 917 .get_adapter_status = asus_get_adapter_status, 918 .get_power_status = asus_get_adapter_status, 919 }; 920 921 static void asus_hotplug_work(struct work_struct *work) 922 { 923 struct asus_wmi *asus; 924 925 asus = container_of(work, struct asus_wmi, hotplug_work); 926 asus_rfkill_hotplug(asus); 927 } 928 929 static int asus_setup_pci_hotplug(struct asus_wmi *asus) 930 { 931 int ret = -ENOMEM; 932 struct pci_bus *bus = pci_find_bus(0, 1); 933 934 if (!bus) { 935 pr_err("Unable to find wifi PCI bus\n"); 936 return -ENODEV; 937 } 938 939 asus->hotplug_workqueue = 940 create_singlethread_workqueue("hotplug_workqueue"); 941 if (!asus->hotplug_workqueue) 942 goto error_workqueue; 943 944 INIT_WORK(&asus->hotplug_work, asus_hotplug_work); 945 946 asus->hotplug_slot.ops = &asus_hotplug_slot_ops; 947 948 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi"); 949 if (ret) { 950 pr_err("Unable to register hotplug slot - %d\n", ret); 951 goto error_register; 952 } 953 954 return 0; 955 956 error_register: 957 asus->hotplug_slot.ops = NULL; 958 destroy_workqueue(asus->hotplug_workqueue); 959 error_workqueue: 960 return ret; 961 } 962 963 /* 964 * Rfkill devices 965 */ 966 static int asus_rfkill_set(void *data, bool blocked) 967 { 968 struct asus_rfkill *priv = data; 969 u32 ctrl_param = !blocked; 970 u32 dev_id = priv->dev_id; 971 972 /* 973 * If the user bit is set, BIOS can't set and record the wlan status, 974 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED 975 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN). 976 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED 977 * while setting the wlan status through WMI. 978 * This is also the behavior that windows app will do. 979 */ 980 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 981 priv->asus->driver->wlan_ctrl_by_user) 982 dev_id = ASUS_WMI_DEVID_WLAN_LED; 983 984 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL); 985 } 986 987 static void asus_rfkill_query(struct rfkill *rfkill, void *data) 988 { 989 struct asus_rfkill *priv = data; 990 int result; 991 992 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id); 993 994 if (result < 0) 995 return; 996 997 rfkill_set_sw_state(priv->rfkill, !result); 998 } 999 1000 static int asus_rfkill_wlan_set(void *data, bool blocked) 1001 { 1002 struct asus_rfkill *priv = data; 1003 struct asus_wmi *asus = priv->asus; 1004 int ret; 1005 1006 /* 1007 * This handler is enabled only if hotplug is enabled. 1008 * In this case, the asus_wmi_set_devstate() will 1009 * trigger a wmi notification and we need to wait 1010 * this call to finish before being able to call 1011 * any wmi method 1012 */ 1013 mutex_lock(&asus->wmi_lock); 1014 ret = asus_rfkill_set(data, blocked); 1015 mutex_unlock(&asus->wmi_lock); 1016 return ret; 1017 } 1018 1019 static const struct rfkill_ops asus_rfkill_wlan_ops = { 1020 .set_block = asus_rfkill_wlan_set, 1021 .query = asus_rfkill_query, 1022 }; 1023 1024 static const struct rfkill_ops asus_rfkill_ops = { 1025 .set_block = asus_rfkill_set, 1026 .query = asus_rfkill_query, 1027 }; 1028 1029 static int asus_new_rfkill(struct asus_wmi *asus, 1030 struct asus_rfkill *arfkill, 1031 const char *name, enum rfkill_type type, int dev_id) 1032 { 1033 int result = asus_wmi_get_devstate_simple(asus, dev_id); 1034 struct rfkill **rfkill = &arfkill->rfkill; 1035 1036 if (result < 0) 1037 return result; 1038 1039 arfkill->dev_id = dev_id; 1040 arfkill->asus = asus; 1041 1042 if (dev_id == ASUS_WMI_DEVID_WLAN && 1043 asus->driver->quirks->hotplug_wireless) 1044 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1045 &asus_rfkill_wlan_ops, arfkill); 1046 else 1047 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1048 &asus_rfkill_ops, arfkill); 1049 1050 if (!*rfkill) 1051 return -EINVAL; 1052 1053 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 1054 (asus->driver->quirks->wapf > 0)) 1055 rfkill_set_led_trigger_name(*rfkill, "asus-wlan"); 1056 1057 rfkill_init_sw_state(*rfkill, !result); 1058 result = rfkill_register(*rfkill); 1059 if (result) { 1060 rfkill_destroy(*rfkill); 1061 *rfkill = NULL; 1062 return result; 1063 } 1064 return 0; 1065 } 1066 1067 static void asus_wmi_rfkill_exit(struct asus_wmi *asus) 1068 { 1069 if (asus->driver->wlan_ctrl_by_user && ashs_present()) 1070 return; 1071 1072 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1073 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1074 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1075 if (asus->wlan.rfkill) { 1076 rfkill_unregister(asus->wlan.rfkill); 1077 rfkill_destroy(asus->wlan.rfkill); 1078 asus->wlan.rfkill = NULL; 1079 } 1080 /* 1081 * Refresh pci hotplug in case the rfkill state was changed after 1082 * asus_unregister_rfkill_notifier() 1083 */ 1084 asus_rfkill_hotplug(asus); 1085 if (asus->hotplug_slot.ops) 1086 pci_hp_deregister(&asus->hotplug_slot); 1087 if (asus->hotplug_workqueue) 1088 destroy_workqueue(asus->hotplug_workqueue); 1089 1090 if (asus->bluetooth.rfkill) { 1091 rfkill_unregister(asus->bluetooth.rfkill); 1092 rfkill_destroy(asus->bluetooth.rfkill); 1093 asus->bluetooth.rfkill = NULL; 1094 } 1095 if (asus->wimax.rfkill) { 1096 rfkill_unregister(asus->wimax.rfkill); 1097 rfkill_destroy(asus->wimax.rfkill); 1098 asus->wimax.rfkill = NULL; 1099 } 1100 if (asus->wwan3g.rfkill) { 1101 rfkill_unregister(asus->wwan3g.rfkill); 1102 rfkill_destroy(asus->wwan3g.rfkill); 1103 asus->wwan3g.rfkill = NULL; 1104 } 1105 if (asus->gps.rfkill) { 1106 rfkill_unregister(asus->gps.rfkill); 1107 rfkill_destroy(asus->gps.rfkill); 1108 asus->gps.rfkill = NULL; 1109 } 1110 if (asus->uwb.rfkill) { 1111 rfkill_unregister(asus->uwb.rfkill); 1112 rfkill_destroy(asus->uwb.rfkill); 1113 asus->uwb.rfkill = NULL; 1114 } 1115 } 1116 1117 static int asus_wmi_rfkill_init(struct asus_wmi *asus) 1118 { 1119 int result = 0; 1120 1121 mutex_init(&asus->hotplug_lock); 1122 mutex_init(&asus->wmi_lock); 1123 1124 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan", 1125 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN); 1126 1127 if (result && result != -ENODEV) 1128 goto exit; 1129 1130 result = asus_new_rfkill(asus, &asus->bluetooth, 1131 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH, 1132 ASUS_WMI_DEVID_BLUETOOTH); 1133 1134 if (result && result != -ENODEV) 1135 goto exit; 1136 1137 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax", 1138 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX); 1139 1140 if (result && result != -ENODEV) 1141 goto exit; 1142 1143 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g", 1144 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G); 1145 1146 if (result && result != -ENODEV) 1147 goto exit; 1148 1149 result = asus_new_rfkill(asus, &asus->gps, "asus-gps", 1150 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS); 1151 1152 if (result && result != -ENODEV) 1153 goto exit; 1154 1155 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb", 1156 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB); 1157 1158 if (result && result != -ENODEV) 1159 goto exit; 1160 1161 if (!asus->driver->quirks->hotplug_wireless) 1162 goto exit; 1163 1164 result = asus_setup_pci_hotplug(asus); 1165 /* 1166 * If we get -EBUSY then something else is handling the PCI hotplug - 1167 * don't fail in this case 1168 */ 1169 if (result == -EBUSY) 1170 result = 0; 1171 1172 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1173 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1174 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1175 /* 1176 * Refresh pci hotplug in case the rfkill state was changed during 1177 * setup. 1178 */ 1179 asus_rfkill_hotplug(asus); 1180 1181 exit: 1182 if (result && result != -ENODEV) 1183 asus_wmi_rfkill_exit(asus); 1184 1185 if (result == -ENODEV) 1186 result = 0; 1187 1188 return result; 1189 } 1190 1191 /* Quirks *********************************************************************/ 1192 1193 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus) 1194 { 1195 struct pci_dev *xhci_pdev; 1196 u32 orig_ports_available; 1197 u32 ports_available = asus->driver->quirks->xusb2pr; 1198 1199 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL, 1200 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI, 1201 NULL); 1202 1203 if (!xhci_pdev) 1204 return; 1205 1206 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1207 &orig_ports_available); 1208 1209 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1210 cpu_to_le32(ports_available)); 1211 1212 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n", 1213 orig_ports_available, ports_available); 1214 } 1215 1216 /* 1217 * Some devices dont support or have borcken get_als method 1218 * but still support set method. 1219 */ 1220 static void asus_wmi_set_als(void) 1221 { 1222 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL); 1223 } 1224 1225 /* Hwmon device ***************************************************************/ 1226 1227 static int asus_agfn_fan_speed_read(struct asus_wmi *asus, int fan, 1228 int *speed) 1229 { 1230 struct agfn_fan_args args = { 1231 .agfn.len = sizeof(args), 1232 .agfn.mfun = ASUS_FAN_MFUN, 1233 .agfn.sfun = ASUS_FAN_SFUN_READ, 1234 .fan = fan, 1235 .speed = 0, 1236 }; 1237 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1238 int status; 1239 1240 if (fan != 1) 1241 return -EINVAL; 1242 1243 status = asus_wmi_evaluate_method_agfn(input); 1244 1245 if (status || args.agfn.err) 1246 return -ENXIO; 1247 1248 if (speed) 1249 *speed = args.speed; 1250 1251 return 0; 1252 } 1253 1254 static int asus_agfn_fan_speed_write(struct asus_wmi *asus, int fan, 1255 int *speed) 1256 { 1257 struct agfn_fan_args args = { 1258 .agfn.len = sizeof(args), 1259 .agfn.mfun = ASUS_FAN_MFUN, 1260 .agfn.sfun = ASUS_FAN_SFUN_WRITE, 1261 .fan = fan, 1262 .speed = speed ? *speed : 0, 1263 }; 1264 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1265 int status; 1266 1267 /* 1: for setting 1st fan's speed 0: setting auto mode */ 1268 if (fan != 1 && fan != 0) 1269 return -EINVAL; 1270 1271 status = asus_wmi_evaluate_method_agfn(input); 1272 1273 if (status || args.agfn.err) 1274 return -ENXIO; 1275 1276 if (speed && fan == 1) 1277 asus->agfn_pwm = *speed; 1278 1279 return 0; 1280 } 1281 1282 /* 1283 * Check if we can read the speed of one fan. If true we assume we can also 1284 * control it. 1285 */ 1286 static bool asus_wmi_has_agfn_fan(struct asus_wmi *asus) 1287 { 1288 int status; 1289 int speed; 1290 u32 value; 1291 1292 status = asus_agfn_fan_speed_read(asus, 1, &speed); 1293 if (status != 0) 1294 return false; 1295 1296 status = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value); 1297 if (status != 0) 1298 return false; 1299 1300 /* 1301 * We need to find a better way, probably using sfun, 1302 * bits or spec ... 1303 * Currently we disable it if: 1304 * - ASUS_WMI_UNSUPPORTED_METHOD is returned 1305 * - reverved bits are non-zero 1306 * - sfun and presence bit are not set 1307 */ 1308 return !(value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000 1309 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT))); 1310 } 1311 1312 static int asus_fan_set_auto(struct asus_wmi *asus) 1313 { 1314 int status; 1315 u32 retval; 1316 1317 switch (asus->fan_type) { 1318 case FAN_TYPE_SPEC83: 1319 status = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL, 1320 0, &retval); 1321 if (status) 1322 return status; 1323 1324 if (retval != 1) 1325 return -EIO; 1326 break; 1327 1328 case FAN_TYPE_AGFN: 1329 status = asus_agfn_fan_speed_write(asus, 0, NULL); 1330 if (status) 1331 return -ENXIO; 1332 break; 1333 1334 default: 1335 return -ENXIO; 1336 } 1337 1338 1339 return 0; 1340 } 1341 1342 static ssize_t pwm1_show(struct device *dev, 1343 struct device_attribute *attr, 1344 char *buf) 1345 { 1346 struct asus_wmi *asus = dev_get_drvdata(dev); 1347 int err; 1348 int value; 1349 1350 /* If we already set a value then just return it */ 1351 if (asus->agfn_pwm >= 0) 1352 return sprintf(buf, "%d\n", asus->agfn_pwm); 1353 1354 /* 1355 * If we haven't set already set a value through the AGFN interface, 1356 * we read a current value through the (now-deprecated) FAN_CTRL device. 1357 */ 1358 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value); 1359 if (err < 0) 1360 return err; 1361 1362 value &= 0xFF; 1363 1364 if (value == 1) /* Low Speed */ 1365 value = 85; 1366 else if (value == 2) 1367 value = 170; 1368 else if (value == 3) 1369 value = 255; 1370 else if (value) { 1371 pr_err("Unknown fan speed %#x\n", value); 1372 value = -1; 1373 } 1374 1375 return sprintf(buf, "%d\n", value); 1376 } 1377 1378 static ssize_t pwm1_store(struct device *dev, 1379 struct device_attribute *attr, 1380 const char *buf, size_t count) { 1381 struct asus_wmi *asus = dev_get_drvdata(dev); 1382 int value; 1383 int state; 1384 int ret; 1385 1386 ret = kstrtouint(buf, 10, &value); 1387 if (ret) 1388 return ret; 1389 1390 value = clamp(value, 0, 255); 1391 1392 state = asus_agfn_fan_speed_write(asus, 1, &value); 1393 if (state) 1394 pr_warn("Setting fan speed failed: %d\n", state); 1395 else 1396 asus->fan_pwm_mode = ASUS_FAN_CTRL_MANUAL; 1397 1398 return count; 1399 } 1400 1401 static ssize_t fan1_input_show(struct device *dev, 1402 struct device_attribute *attr, 1403 char *buf) 1404 { 1405 struct asus_wmi *asus = dev_get_drvdata(dev); 1406 int value; 1407 int ret; 1408 1409 switch (asus->fan_type) { 1410 case FAN_TYPE_SPEC83: 1411 ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL, 1412 &value); 1413 if (ret < 0) 1414 return ret; 1415 1416 value &= 0xffff; 1417 break; 1418 1419 case FAN_TYPE_AGFN: 1420 /* no speed readable on manual mode */ 1421 if (asus->fan_pwm_mode == ASUS_FAN_CTRL_MANUAL) 1422 return -ENXIO; 1423 1424 ret = asus_agfn_fan_speed_read(asus, 1, &value); 1425 if (ret) { 1426 pr_warn("reading fan speed failed: %d\n", ret); 1427 return -ENXIO; 1428 } 1429 break; 1430 1431 default: 1432 return -ENXIO; 1433 } 1434 1435 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100); 1436 } 1437 1438 static ssize_t pwm1_enable_show(struct device *dev, 1439 struct device_attribute *attr, 1440 char *buf) 1441 { 1442 struct asus_wmi *asus = dev_get_drvdata(dev); 1443 1444 /* 1445 * Just read back the cached pwm mode. 1446 * 1447 * For the CPU_FAN device, the spec indicates that we should be 1448 * able to read the device status and consult bit 19 to see if we 1449 * are in Full On or Automatic mode. However, this does not work 1450 * in practice on X532FL at least (the bit is always 0) and there's 1451 * also nothing in the DSDT to indicate that this behaviour exists. 1452 */ 1453 return sprintf(buf, "%d\n", asus->fan_pwm_mode); 1454 } 1455 1456 static ssize_t pwm1_enable_store(struct device *dev, 1457 struct device_attribute *attr, 1458 const char *buf, size_t count) 1459 { 1460 struct asus_wmi *asus = dev_get_drvdata(dev); 1461 int status = 0; 1462 int state; 1463 int value; 1464 int ret; 1465 u32 retval; 1466 1467 ret = kstrtouint(buf, 10, &state); 1468 if (ret) 1469 return ret; 1470 1471 if (asus->fan_type == FAN_TYPE_SPEC83) { 1472 switch (state) { /* standard documented hwmon values */ 1473 case ASUS_FAN_CTRL_FULLSPEED: 1474 value = 1; 1475 break; 1476 case ASUS_FAN_CTRL_AUTO: 1477 value = 0; 1478 break; 1479 default: 1480 return -EINVAL; 1481 } 1482 1483 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL, 1484 value, &retval); 1485 if (ret) 1486 return ret; 1487 1488 if (retval != 1) 1489 return -EIO; 1490 } else if (asus->fan_type == FAN_TYPE_AGFN) { 1491 switch (state) { 1492 case ASUS_FAN_CTRL_MANUAL: 1493 break; 1494 1495 case ASUS_FAN_CTRL_AUTO: 1496 status = asus_fan_set_auto(asus); 1497 if (status) 1498 return status; 1499 break; 1500 1501 default: 1502 return -EINVAL; 1503 } 1504 } 1505 1506 asus->fan_pwm_mode = state; 1507 return count; 1508 } 1509 1510 static ssize_t fan1_label_show(struct device *dev, 1511 struct device_attribute *attr, 1512 char *buf) 1513 { 1514 return sprintf(buf, "%s\n", ASUS_FAN_DESC); 1515 } 1516 1517 static ssize_t asus_hwmon_temp1(struct device *dev, 1518 struct device_attribute *attr, 1519 char *buf) 1520 { 1521 struct asus_wmi *asus = dev_get_drvdata(dev); 1522 u32 value; 1523 int err; 1524 1525 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value); 1526 if (err < 0) 1527 return err; 1528 1529 return sprintf(buf, "%ld\n", 1530 deci_kelvin_to_millicelsius(value & 0xFFFF)); 1531 } 1532 1533 /* Fan1 */ 1534 static DEVICE_ATTR_RW(pwm1); 1535 static DEVICE_ATTR_RW(pwm1_enable); 1536 static DEVICE_ATTR_RO(fan1_input); 1537 static DEVICE_ATTR_RO(fan1_label); 1538 1539 /* Temperature */ 1540 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL); 1541 1542 static struct attribute *hwmon_attributes[] = { 1543 &dev_attr_pwm1.attr, 1544 &dev_attr_pwm1_enable.attr, 1545 &dev_attr_fan1_input.attr, 1546 &dev_attr_fan1_label.attr, 1547 1548 &dev_attr_temp1_input.attr, 1549 NULL 1550 }; 1551 1552 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj, 1553 struct attribute *attr, int idx) 1554 { 1555 struct device *dev = container_of(kobj, struct device, kobj); 1556 struct asus_wmi *asus = dev_get_drvdata(dev->parent); 1557 u32 value = ASUS_WMI_UNSUPPORTED_METHOD; 1558 1559 if (attr == &dev_attr_pwm1.attr) { 1560 if (asus->fan_type != FAN_TYPE_AGFN) 1561 return 0; 1562 } else if (attr == &dev_attr_fan1_input.attr 1563 || attr == &dev_attr_fan1_label.attr 1564 || attr == &dev_attr_pwm1_enable.attr) { 1565 if (asus->fan_type == FAN_TYPE_NONE) 1566 return 0; 1567 } else if (attr == &dev_attr_temp1_input.attr) { 1568 int err = asus_wmi_get_devstate(asus, 1569 ASUS_WMI_DEVID_THERMAL_CTRL, 1570 &value); 1571 1572 if (err < 0) 1573 return 0; /* can't return negative here */ 1574 1575 /* 1576 * If the temperature value in deci-Kelvin is near the absolute 1577 * zero temperature, something is clearly wrong 1578 */ 1579 if (value == 0 || value == 1) 1580 return 0; 1581 } 1582 1583 return attr->mode; 1584 } 1585 1586 static const struct attribute_group hwmon_attribute_group = { 1587 .is_visible = asus_hwmon_sysfs_is_visible, 1588 .attrs = hwmon_attributes 1589 }; 1590 __ATTRIBUTE_GROUPS(hwmon_attribute); 1591 1592 static int asus_wmi_hwmon_init(struct asus_wmi *asus) 1593 { 1594 struct device *dev = &asus->platform_device->dev; 1595 struct device *hwmon; 1596 1597 hwmon = devm_hwmon_device_register_with_groups(dev, "asus", asus, 1598 hwmon_attribute_groups); 1599 1600 if (IS_ERR(hwmon)) { 1601 pr_err("Could not register asus hwmon device\n"); 1602 return PTR_ERR(hwmon); 1603 } 1604 return 0; 1605 } 1606 1607 static int asus_wmi_fan_init(struct asus_wmi *asus) 1608 { 1609 asus->fan_type = FAN_TYPE_NONE; 1610 asus->agfn_pwm = -1; 1611 1612 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL)) 1613 asus->fan_type = FAN_TYPE_SPEC83; 1614 else if (asus_wmi_has_agfn_fan(asus)) 1615 asus->fan_type = FAN_TYPE_AGFN; 1616 1617 if (asus->fan_type == FAN_TYPE_NONE) 1618 return -ENODEV; 1619 1620 asus_fan_set_auto(asus); 1621 asus->fan_pwm_mode = ASUS_FAN_CTRL_AUTO; 1622 return 0; 1623 } 1624 1625 /* Fan mode *******************************************************************/ 1626 1627 static int fan_boost_mode_check_present(struct asus_wmi *asus) 1628 { 1629 u32 result; 1630 int err; 1631 1632 asus->fan_boost_mode_available = false; 1633 1634 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_BOOST_MODE, 1635 &result); 1636 if (err) { 1637 if (err == -ENODEV) 1638 return 0; 1639 else 1640 return err; 1641 } 1642 1643 if ((result & ASUS_WMI_DSTS_PRESENCE_BIT) && 1644 (result & ASUS_FAN_BOOST_MODES_MASK)) { 1645 asus->fan_boost_mode_available = true; 1646 asus->fan_boost_mode_mask = result & ASUS_FAN_BOOST_MODES_MASK; 1647 } 1648 1649 return 0; 1650 } 1651 1652 static int fan_boost_mode_write(struct asus_wmi *asus) 1653 { 1654 int err; 1655 u8 value; 1656 u32 retval; 1657 1658 value = asus->fan_boost_mode; 1659 1660 pr_info("Set fan boost mode: %u\n", value); 1661 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_FAN_BOOST_MODE, value, 1662 &retval); 1663 if (err) { 1664 pr_warn("Failed to set fan boost mode: %d\n", err); 1665 return err; 1666 } 1667 1668 if (retval != 1) { 1669 pr_warn("Failed to set fan boost mode (retval): 0x%x\n", 1670 retval); 1671 return -EIO; 1672 } 1673 1674 return 0; 1675 } 1676 1677 static int fan_boost_mode_switch_next(struct asus_wmi *asus) 1678 { 1679 u8 mask = asus->fan_boost_mode_mask; 1680 1681 if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_NORMAL) { 1682 if (mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK) 1683 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_OVERBOOST; 1684 else if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK) 1685 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT; 1686 } else if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) { 1687 if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK) 1688 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT; 1689 else 1690 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL; 1691 } else { 1692 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL; 1693 } 1694 1695 return fan_boost_mode_write(asus); 1696 } 1697 1698 static ssize_t fan_boost_mode_show(struct device *dev, 1699 struct device_attribute *attr, char *buf) 1700 { 1701 struct asus_wmi *asus = dev_get_drvdata(dev); 1702 1703 return scnprintf(buf, PAGE_SIZE, "%d\n", asus->fan_boost_mode); 1704 } 1705 1706 static ssize_t fan_boost_mode_store(struct device *dev, 1707 struct device_attribute *attr, 1708 const char *buf, size_t count) 1709 { 1710 int result; 1711 u8 new_mode; 1712 struct asus_wmi *asus = dev_get_drvdata(dev); 1713 u8 mask = asus->fan_boost_mode_mask; 1714 1715 result = kstrtou8(buf, 10, &new_mode); 1716 if (result < 0) { 1717 pr_warn("Trying to store invalid value\n"); 1718 return result; 1719 } 1720 1721 if (new_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) { 1722 if (!(mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK)) 1723 return -EINVAL; 1724 } else if (new_mode == ASUS_FAN_BOOST_MODE_SILENT) { 1725 if (!(mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)) 1726 return -EINVAL; 1727 } else if (new_mode != ASUS_FAN_BOOST_MODE_NORMAL) { 1728 return -EINVAL; 1729 } 1730 1731 asus->fan_boost_mode = new_mode; 1732 fan_boost_mode_write(asus); 1733 1734 return count; 1735 } 1736 1737 // Fan boost mode: 0 - normal, 1 - overboost, 2 - silent 1738 static DEVICE_ATTR_RW(fan_boost_mode); 1739 1740 /* Throttle thermal policy ****************************************************/ 1741 1742 static int throttle_thermal_policy_check_present(struct asus_wmi *asus) 1743 { 1744 u32 result; 1745 int err; 1746 1747 asus->throttle_thermal_policy_available = false; 1748 1749 err = asus_wmi_get_devstate(asus, 1750 ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY, 1751 &result); 1752 if (err) { 1753 if (err == -ENODEV) 1754 return 0; 1755 return err; 1756 } 1757 1758 if (result & ASUS_WMI_DSTS_PRESENCE_BIT) 1759 asus->throttle_thermal_policy_available = true; 1760 1761 return 0; 1762 } 1763 1764 static int throttle_thermal_policy_write(struct asus_wmi *asus) 1765 { 1766 int err; 1767 u8 value; 1768 u32 retval; 1769 1770 value = asus->throttle_thermal_policy_mode; 1771 1772 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY, 1773 value, &retval); 1774 if (err) { 1775 pr_warn("Failed to set throttle thermal policy: %d\n", err); 1776 return err; 1777 } 1778 1779 if (retval != 1) { 1780 pr_warn("Failed to set throttle thermal policy (retval): 0x%x\n", 1781 retval); 1782 return -EIO; 1783 } 1784 1785 return 0; 1786 } 1787 1788 static int throttle_thermal_policy_set_default(struct asus_wmi *asus) 1789 { 1790 if (!asus->throttle_thermal_policy_available) 1791 return 0; 1792 1793 asus->throttle_thermal_policy_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT; 1794 return throttle_thermal_policy_write(asus); 1795 } 1796 1797 static int throttle_thermal_policy_switch_next(struct asus_wmi *asus) 1798 { 1799 u8 new_mode = asus->throttle_thermal_policy_mode + 1; 1800 1801 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT) 1802 new_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT; 1803 1804 asus->throttle_thermal_policy_mode = new_mode; 1805 return throttle_thermal_policy_write(asus); 1806 } 1807 1808 static ssize_t throttle_thermal_policy_show(struct device *dev, 1809 struct device_attribute *attr, char *buf) 1810 { 1811 struct asus_wmi *asus = dev_get_drvdata(dev); 1812 u8 mode = asus->throttle_thermal_policy_mode; 1813 1814 return scnprintf(buf, PAGE_SIZE, "%d\n", mode); 1815 } 1816 1817 static ssize_t throttle_thermal_policy_store(struct device *dev, 1818 struct device_attribute *attr, 1819 const char *buf, size_t count) 1820 { 1821 int result; 1822 u8 new_mode; 1823 struct asus_wmi *asus = dev_get_drvdata(dev); 1824 1825 result = kstrtou8(buf, 10, &new_mode); 1826 if (result < 0) 1827 return result; 1828 1829 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT) 1830 return -EINVAL; 1831 1832 asus->throttle_thermal_policy_mode = new_mode; 1833 throttle_thermal_policy_write(asus); 1834 1835 return count; 1836 } 1837 1838 // Throttle thermal policy: 0 - default, 1 - overboost, 2 - silent 1839 static DEVICE_ATTR_RW(throttle_thermal_policy); 1840 1841 /* Backlight ******************************************************************/ 1842 1843 static int read_backlight_power(struct asus_wmi *asus) 1844 { 1845 int ret; 1846 1847 if (asus->driver->quirks->store_backlight_power) 1848 ret = !asus->driver->panel_power; 1849 else 1850 ret = asus_wmi_get_devstate_simple(asus, 1851 ASUS_WMI_DEVID_BACKLIGHT); 1852 1853 if (ret < 0) 1854 return ret; 1855 1856 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; 1857 } 1858 1859 static int read_brightness_max(struct asus_wmi *asus) 1860 { 1861 u32 retval; 1862 int err; 1863 1864 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1865 if (err < 0) 1866 return err; 1867 1868 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK; 1869 retval >>= 8; 1870 1871 if (!retval) 1872 return -ENODEV; 1873 1874 return retval; 1875 } 1876 1877 static int read_brightness(struct backlight_device *bd) 1878 { 1879 struct asus_wmi *asus = bl_get_data(bd); 1880 u32 retval; 1881 int err; 1882 1883 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1884 if (err < 0) 1885 return err; 1886 1887 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 1888 } 1889 1890 static u32 get_scalar_command(struct backlight_device *bd) 1891 { 1892 struct asus_wmi *asus = bl_get_data(bd); 1893 u32 ctrl_param = 0; 1894 1895 if ((asus->driver->brightness < bd->props.brightness) || 1896 bd->props.brightness == bd->props.max_brightness) 1897 ctrl_param = 0x00008001; 1898 else if ((asus->driver->brightness > bd->props.brightness) || 1899 bd->props.brightness == 0) 1900 ctrl_param = 0x00008000; 1901 1902 asus->driver->brightness = bd->props.brightness; 1903 1904 return ctrl_param; 1905 } 1906 1907 static int update_bl_status(struct backlight_device *bd) 1908 { 1909 struct asus_wmi *asus = bl_get_data(bd); 1910 u32 ctrl_param; 1911 int power, err = 0; 1912 1913 power = read_backlight_power(asus); 1914 if (power != -ENODEV && bd->props.power != power) { 1915 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK); 1916 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 1917 ctrl_param, NULL); 1918 if (asus->driver->quirks->store_backlight_power) 1919 asus->driver->panel_power = bd->props.power; 1920 1921 /* When using scalar brightness, updating the brightness 1922 * will mess with the backlight power */ 1923 if (asus->driver->quirks->scalar_panel_brightness) 1924 return err; 1925 } 1926 1927 if (asus->driver->quirks->scalar_panel_brightness) 1928 ctrl_param = get_scalar_command(bd); 1929 else 1930 ctrl_param = bd->props.brightness; 1931 1932 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS, 1933 ctrl_param, NULL); 1934 1935 return err; 1936 } 1937 1938 static const struct backlight_ops asus_wmi_bl_ops = { 1939 .get_brightness = read_brightness, 1940 .update_status = update_bl_status, 1941 }; 1942 1943 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code) 1944 { 1945 struct backlight_device *bd = asus->backlight_device; 1946 int old = bd->props.brightness; 1947 int new = old; 1948 1949 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1950 new = code - NOTIFY_BRNUP_MIN + 1; 1951 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 1952 new = code - NOTIFY_BRNDOWN_MIN; 1953 1954 bd->props.brightness = new; 1955 backlight_update_status(bd); 1956 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 1957 1958 return old; 1959 } 1960 1961 static int asus_wmi_backlight_init(struct asus_wmi *asus) 1962 { 1963 struct backlight_device *bd; 1964 struct backlight_properties props; 1965 int max; 1966 int power; 1967 1968 max = read_brightness_max(asus); 1969 if (max < 0) 1970 return max; 1971 1972 power = read_backlight_power(asus); 1973 if (power == -ENODEV) 1974 power = FB_BLANK_UNBLANK; 1975 else if (power < 0) 1976 return power; 1977 1978 memset(&props, 0, sizeof(struct backlight_properties)); 1979 props.type = BACKLIGHT_PLATFORM; 1980 props.max_brightness = max; 1981 bd = backlight_device_register(asus->driver->name, 1982 &asus->platform_device->dev, asus, 1983 &asus_wmi_bl_ops, &props); 1984 if (IS_ERR(bd)) { 1985 pr_err("Could not register backlight device\n"); 1986 return PTR_ERR(bd); 1987 } 1988 1989 asus->backlight_device = bd; 1990 1991 if (asus->driver->quirks->store_backlight_power) 1992 asus->driver->panel_power = power; 1993 1994 bd->props.brightness = read_brightness(bd); 1995 bd->props.power = power; 1996 backlight_update_status(bd); 1997 1998 asus->driver->brightness = bd->props.brightness; 1999 2000 return 0; 2001 } 2002 2003 static void asus_wmi_backlight_exit(struct asus_wmi *asus) 2004 { 2005 backlight_device_unregister(asus->backlight_device); 2006 2007 asus->backlight_device = NULL; 2008 } 2009 2010 static int is_display_toggle(int code) 2011 { 2012 /* display toggle keys */ 2013 if ((code >= 0x61 && code <= 0x67) || 2014 (code >= 0x8c && code <= 0x93) || 2015 (code >= 0xa0 && code <= 0xa7) || 2016 (code >= 0xd0 && code <= 0xd5)) 2017 return 1; 2018 2019 return 0; 2020 } 2021 2022 /* Fn-lock ********************************************************************/ 2023 2024 static bool asus_wmi_has_fnlock_key(struct asus_wmi *asus) 2025 { 2026 u32 result; 2027 2028 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FNLOCK, &result); 2029 2030 return (result & ASUS_WMI_DSTS_PRESENCE_BIT) && 2031 !(result & ASUS_WMI_FNLOCK_BIOS_DISABLED); 2032 } 2033 2034 static void asus_wmi_fnlock_update(struct asus_wmi *asus) 2035 { 2036 int mode = asus->fnlock_locked; 2037 2038 asus_wmi_set_devstate(ASUS_WMI_DEVID_FNLOCK, mode, NULL); 2039 } 2040 2041 /* WMI events *****************************************************************/ 2042 2043 static int asus_wmi_get_event_code(u32 value) 2044 { 2045 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 2046 union acpi_object *obj; 2047 acpi_status status; 2048 int code; 2049 2050 status = wmi_get_event_data(value, &response); 2051 if (ACPI_FAILURE(status)) { 2052 pr_warn("Failed to get WMI notify code: %s\n", 2053 acpi_format_exception(status)); 2054 return -EIO; 2055 } 2056 2057 obj = (union acpi_object *)response.pointer; 2058 2059 if (obj && obj->type == ACPI_TYPE_INTEGER) 2060 code = (int)(obj->integer.value & WMI_EVENT_MASK); 2061 else 2062 code = -EIO; 2063 2064 kfree(obj); 2065 return code; 2066 } 2067 2068 static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus) 2069 { 2070 unsigned int key_value = 1; 2071 bool autorelease = 1; 2072 int result, orig_code; 2073 2074 orig_code = code; 2075 2076 if (asus->driver->key_filter) { 2077 asus->driver->key_filter(asus->driver, &code, &key_value, 2078 &autorelease); 2079 if (code == ASUS_WMI_KEY_IGNORE) 2080 return; 2081 } 2082 2083 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 2084 code = ASUS_WMI_BRN_UP; 2085 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 2086 code = ASUS_WMI_BRN_DOWN; 2087 2088 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) { 2089 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 2090 asus_wmi_backlight_notify(asus, orig_code); 2091 return; 2092 } 2093 } 2094 2095 if (code == NOTIFY_KBD_BRTUP) { 2096 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1); 2097 return; 2098 } 2099 if (code == NOTIFY_KBD_BRTDWN) { 2100 kbd_led_set_by_kbd(asus, asus->kbd_led_wk - 1); 2101 return; 2102 } 2103 if (code == NOTIFY_KBD_BRTTOGGLE) { 2104 if (asus->kbd_led_wk == asus->kbd_led.max_brightness) 2105 kbd_led_set_by_kbd(asus, 0); 2106 else 2107 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1); 2108 return; 2109 } 2110 2111 if (code == NOTIFY_FNLOCK_TOGGLE) { 2112 asus->fnlock_locked = !asus->fnlock_locked; 2113 asus_wmi_fnlock_update(asus); 2114 return; 2115 } 2116 2117 if (code == NOTIFY_KBD_DOCK_CHANGE) { 2118 result = asus_wmi_get_devstate_simple(asus, 2119 ASUS_WMI_DEVID_KBD_DOCK); 2120 if (result >= 0) { 2121 input_report_switch(asus->inputdev, SW_TABLET_MODE, 2122 !result); 2123 input_sync(asus->inputdev); 2124 } 2125 return; 2126 } 2127 2128 if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) { 2129 fan_boost_mode_switch_next(asus); 2130 return; 2131 } 2132 2133 if (asus->throttle_thermal_policy_available && code == NOTIFY_KBD_TTP) { 2134 throttle_thermal_policy_switch_next(asus); 2135 return; 2136 } 2137 2138 if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle) 2139 return; 2140 2141 if (!sparse_keymap_report_event(asus->inputdev, code, 2142 key_value, autorelease)) 2143 pr_info("Unknown key %x pressed\n", code); 2144 } 2145 2146 static void asus_wmi_notify(u32 value, void *context) 2147 { 2148 struct asus_wmi *asus = context; 2149 int code; 2150 int i; 2151 2152 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) { 2153 code = asus_wmi_get_event_code(value); 2154 if (code < 0) { 2155 pr_warn("Failed to get notify code: %d\n", code); 2156 return; 2157 } 2158 2159 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK) 2160 return; 2161 2162 asus_wmi_handle_event_code(code, asus); 2163 2164 /* 2165 * Double check that queue is present: 2166 * ATK (with queue) uses 0xff, ASUSWMI (without) 0xd2. 2167 */ 2168 if (!asus->wmi_event_queue || value != WMI_EVENT_VALUE_ATK) 2169 return; 2170 } 2171 2172 pr_warn("Failed to process event queue, last code: 0x%x\n", code); 2173 } 2174 2175 static int asus_wmi_notify_queue_flush(struct asus_wmi *asus) 2176 { 2177 int code; 2178 int i; 2179 2180 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) { 2181 code = asus_wmi_get_event_code(WMI_EVENT_VALUE_ATK); 2182 if (code < 0) { 2183 pr_warn("Failed to get event during flush: %d\n", code); 2184 return code; 2185 } 2186 2187 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK) 2188 return 0; 2189 } 2190 2191 pr_warn("Failed to flush event queue\n"); 2192 return -EIO; 2193 } 2194 2195 /* Sysfs **********************************************************************/ 2196 2197 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid, 2198 const char *buf, size_t count) 2199 { 2200 u32 retval; 2201 int err, value; 2202 2203 value = asus_wmi_get_devstate_simple(asus, devid); 2204 if (value < 0) 2205 return value; 2206 2207 err = kstrtoint(buf, 0, &value); 2208 if (err) 2209 return err; 2210 2211 err = asus_wmi_set_devstate(devid, value, &retval); 2212 if (err < 0) 2213 return err; 2214 2215 return count; 2216 } 2217 2218 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf) 2219 { 2220 int value = asus_wmi_get_devstate_simple(asus, devid); 2221 2222 if (value < 0) 2223 return value; 2224 2225 return sprintf(buf, "%d\n", value); 2226 } 2227 2228 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ 2229 static ssize_t show_##_name(struct device *dev, \ 2230 struct device_attribute *attr, \ 2231 char *buf) \ 2232 { \ 2233 struct asus_wmi *asus = dev_get_drvdata(dev); \ 2234 \ 2235 return show_sys_wmi(asus, _cm, buf); \ 2236 } \ 2237 static ssize_t store_##_name(struct device *dev, \ 2238 struct device_attribute *attr, \ 2239 const char *buf, size_t count) \ 2240 { \ 2241 struct asus_wmi *asus = dev_get_drvdata(dev); \ 2242 \ 2243 return store_sys_wmi(asus, _cm, buf, count); \ 2244 } \ 2245 static struct device_attribute dev_attr_##_name = { \ 2246 .attr = { \ 2247 .name = __stringify(_name), \ 2248 .mode = _mode }, \ 2249 .show = show_##_name, \ 2250 .store = store_##_name, \ 2251 } 2252 2253 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD); 2254 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA); 2255 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER); 2256 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME); 2257 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE); 2258 2259 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr, 2260 const char *buf, size_t count) 2261 { 2262 int value, rv; 2263 2264 rv = kstrtoint(buf, 0, &value); 2265 if (rv) 2266 return rv; 2267 2268 if (value < 0 || value > 2) 2269 return -EINVAL; 2270 2271 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL); 2272 if (rv < 0) 2273 return rv; 2274 2275 return count; 2276 } 2277 2278 static DEVICE_ATTR_WO(cpufv); 2279 2280 static struct attribute *platform_attributes[] = { 2281 &dev_attr_cpufv.attr, 2282 &dev_attr_camera.attr, 2283 &dev_attr_cardr.attr, 2284 &dev_attr_touchpad.attr, 2285 &dev_attr_lid_resume.attr, 2286 &dev_attr_als_enable.attr, 2287 &dev_attr_fan_boost_mode.attr, 2288 &dev_attr_throttle_thermal_policy.attr, 2289 NULL 2290 }; 2291 2292 static umode_t asus_sysfs_is_visible(struct kobject *kobj, 2293 struct attribute *attr, int idx) 2294 { 2295 struct device *dev = container_of(kobj, struct device, kobj); 2296 struct asus_wmi *asus = dev_get_drvdata(dev); 2297 bool ok = true; 2298 int devid = -1; 2299 2300 if (attr == &dev_attr_camera.attr) 2301 devid = ASUS_WMI_DEVID_CAMERA; 2302 else if (attr == &dev_attr_cardr.attr) 2303 devid = ASUS_WMI_DEVID_CARDREADER; 2304 else if (attr == &dev_attr_touchpad.attr) 2305 devid = ASUS_WMI_DEVID_TOUCHPAD; 2306 else if (attr == &dev_attr_lid_resume.attr) 2307 devid = ASUS_WMI_DEVID_LID_RESUME; 2308 else if (attr == &dev_attr_als_enable.attr) 2309 devid = ASUS_WMI_DEVID_ALS_ENABLE; 2310 else if (attr == &dev_attr_fan_boost_mode.attr) 2311 ok = asus->fan_boost_mode_available; 2312 else if (attr == &dev_attr_throttle_thermal_policy.attr) 2313 ok = asus->throttle_thermal_policy_available; 2314 2315 if (devid != -1) 2316 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0); 2317 2318 return ok ? attr->mode : 0; 2319 } 2320 2321 static const struct attribute_group platform_attribute_group = { 2322 .is_visible = asus_sysfs_is_visible, 2323 .attrs = platform_attributes 2324 }; 2325 2326 static void asus_wmi_sysfs_exit(struct platform_device *device) 2327 { 2328 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); 2329 } 2330 2331 static int asus_wmi_sysfs_init(struct platform_device *device) 2332 { 2333 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); 2334 } 2335 2336 /* Platform device ************************************************************/ 2337 2338 static int asus_wmi_platform_init(struct asus_wmi *asus) 2339 { 2340 struct device *dev = &asus->platform_device->dev; 2341 char *wmi_uid; 2342 int rv; 2343 2344 /* INIT enable hotkeys on some models */ 2345 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv)) 2346 pr_info("Initialization: %#x\n", rv); 2347 2348 /* We don't know yet what to do with this version... */ 2349 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) { 2350 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF); 2351 asus->spec = rv; 2352 } 2353 2354 /* 2355 * The SFUN method probably allows the original driver to get the list 2356 * of features supported by a given model. For now, 0x0100 or 0x0800 2357 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 2358 * The significance of others is yet to be found. 2359 */ 2360 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) { 2361 pr_info("SFUN value: %#x\n", rv); 2362 asus->sfun = rv; 2363 } 2364 2365 /* 2366 * Eee PC and Notebooks seems to have different method_id for DSTS, 2367 * but it may also be related to the BIOS's SPEC. 2368 * Note, on most Eeepc, there is no way to check if a method exist 2369 * or note, while on notebooks, they returns 0xFFFFFFFE on failure, 2370 * but once again, SPEC may probably be used for that kind of things. 2371 * 2372 * Additionally at least TUF Gaming series laptops return nothing for 2373 * unknown methods, so the detection in this way is not possible. 2374 * 2375 * There is strong indication that only ACPI WMI devices that have _UID 2376 * equal to "ASUSWMI" use DCTS whereas those with "ATK" use DSTS. 2377 */ 2378 wmi_uid = wmi_get_acpi_device_uid(ASUS_WMI_MGMT_GUID); 2379 if (!wmi_uid) 2380 return -ENODEV; 2381 2382 if (!strcmp(wmi_uid, ASUS_ACPI_UID_ASUSWMI)) { 2383 dev_info(dev, "Detected ASUSWMI, use DCTS\n"); 2384 asus->dsts_id = ASUS_WMI_METHODID_DCTS; 2385 } else { 2386 dev_info(dev, "Detected %s, not ASUSWMI, use DSTS\n", wmi_uid); 2387 asus->dsts_id = ASUS_WMI_METHODID_DSTS; 2388 } 2389 2390 /* 2391 * Some devices can have multiple event codes stored in a queue before 2392 * the module load if it was unloaded intermittently after calling 2393 * the INIT method (enables event handling). The WMI notify handler is 2394 * expected to retrieve all event codes until a retrieved code equals 2395 * queue end marker (One or Ones). Old codes are flushed from the queue 2396 * upon module load. Not enabling this when it should be has minimal 2397 * visible impact so fall back if anything goes wrong. 2398 */ 2399 wmi_uid = wmi_get_acpi_device_uid(asus->driver->event_guid); 2400 if (wmi_uid && !strcmp(wmi_uid, ASUS_ACPI_UID_ATK)) { 2401 dev_info(dev, "Detected ATK, enable event queue\n"); 2402 2403 if (!asus_wmi_notify_queue_flush(asus)) 2404 asus->wmi_event_queue = true; 2405 } 2406 2407 /* CWAP allow to define the behavior of the Fn+F2 key, 2408 * this method doesn't seems to be present on Eee PCs */ 2409 if (asus->driver->quirks->wapf >= 0) 2410 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP, 2411 asus->driver->quirks->wapf, NULL); 2412 2413 return 0; 2414 } 2415 2416 /* debugfs ********************************************************************/ 2417 2418 struct asus_wmi_debugfs_node { 2419 struct asus_wmi *asus; 2420 char *name; 2421 int (*show) (struct seq_file *m, void *data); 2422 }; 2423 2424 static int show_dsts(struct seq_file *m, void *data) 2425 { 2426 struct asus_wmi *asus = m->private; 2427 int err; 2428 u32 retval = -1; 2429 2430 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval); 2431 if (err < 0) 2432 return err; 2433 2434 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval); 2435 2436 return 0; 2437 } 2438 2439 static int show_devs(struct seq_file *m, void *data) 2440 { 2441 struct asus_wmi *asus = m->private; 2442 int err; 2443 u32 retval = -1; 2444 2445 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param, 2446 &retval); 2447 if (err < 0) 2448 return err; 2449 2450 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id, 2451 asus->debug.ctrl_param, retval); 2452 2453 return 0; 2454 } 2455 2456 static int show_call(struct seq_file *m, void *data) 2457 { 2458 struct asus_wmi *asus = m->private; 2459 struct bios_args args = { 2460 .arg0 = asus->debug.dev_id, 2461 .arg1 = asus->debug.ctrl_param, 2462 }; 2463 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 2464 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 2465 union acpi_object *obj; 2466 acpi_status status; 2467 2468 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 2469 0, asus->debug.method_id, 2470 &input, &output); 2471 2472 if (ACPI_FAILURE(status)) 2473 return -EIO; 2474 2475 obj = (union acpi_object *)output.pointer; 2476 if (obj && obj->type == ACPI_TYPE_INTEGER) 2477 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id, 2478 asus->debug.dev_id, asus->debug.ctrl_param, 2479 (u32) obj->integer.value); 2480 else 2481 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id, 2482 asus->debug.dev_id, asus->debug.ctrl_param, 2483 obj ? obj->type : -1); 2484 2485 kfree(obj); 2486 2487 return 0; 2488 } 2489 2490 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = { 2491 {NULL, "devs", show_devs}, 2492 {NULL, "dsts", show_dsts}, 2493 {NULL, "call", show_call}, 2494 }; 2495 2496 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file) 2497 { 2498 struct asus_wmi_debugfs_node *node = inode->i_private; 2499 2500 return single_open(file, node->show, node->asus); 2501 } 2502 2503 static const struct file_operations asus_wmi_debugfs_io_ops = { 2504 .owner = THIS_MODULE, 2505 .open = asus_wmi_debugfs_open, 2506 .read = seq_read, 2507 .llseek = seq_lseek, 2508 .release = single_release, 2509 }; 2510 2511 static void asus_wmi_debugfs_exit(struct asus_wmi *asus) 2512 { 2513 debugfs_remove_recursive(asus->debug.root); 2514 } 2515 2516 static void asus_wmi_debugfs_init(struct asus_wmi *asus) 2517 { 2518 int i; 2519 2520 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL); 2521 2522 debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, asus->debug.root, 2523 &asus->debug.method_id); 2524 2525 debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, asus->debug.root, 2526 &asus->debug.dev_id); 2527 2528 debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, asus->debug.root, 2529 &asus->debug.ctrl_param); 2530 2531 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) { 2532 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i]; 2533 2534 node->asus = asus; 2535 debugfs_create_file(node->name, S_IFREG | S_IRUGO, 2536 asus->debug.root, node, 2537 &asus_wmi_debugfs_io_ops); 2538 } 2539 } 2540 2541 /* Init / exit ****************************************************************/ 2542 2543 static int asus_wmi_add(struct platform_device *pdev) 2544 { 2545 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2546 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2547 struct asus_wmi *asus; 2548 const char *chassis_type; 2549 acpi_status status; 2550 int err; 2551 u32 result; 2552 2553 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL); 2554 if (!asus) 2555 return -ENOMEM; 2556 2557 asus->driver = wdrv; 2558 asus->platform_device = pdev; 2559 wdrv->platform_device = pdev; 2560 platform_set_drvdata(asus->platform_device, asus); 2561 2562 if (wdrv->detect_quirks) 2563 wdrv->detect_quirks(asus->driver); 2564 2565 err = asus_wmi_platform_init(asus); 2566 if (err) 2567 goto fail_platform; 2568 2569 err = fan_boost_mode_check_present(asus); 2570 if (err) 2571 goto fail_fan_boost_mode; 2572 2573 err = throttle_thermal_policy_check_present(asus); 2574 if (err) 2575 goto fail_throttle_thermal_policy; 2576 else 2577 throttle_thermal_policy_set_default(asus); 2578 2579 err = asus_wmi_sysfs_init(asus->platform_device); 2580 if (err) 2581 goto fail_sysfs; 2582 2583 err = asus_wmi_input_init(asus); 2584 if (err) 2585 goto fail_input; 2586 2587 err = asus_wmi_fan_init(asus); /* probably no problems on error */ 2588 2589 err = asus_wmi_hwmon_init(asus); 2590 if (err) 2591 goto fail_hwmon; 2592 2593 err = asus_wmi_led_init(asus); 2594 if (err) 2595 goto fail_leds; 2596 2597 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result); 2598 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT)) 2599 asus->driver->wlan_ctrl_by_user = 1; 2600 2601 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) { 2602 err = asus_wmi_rfkill_init(asus); 2603 if (err) 2604 goto fail_rfkill; 2605 } 2606 2607 if (asus->driver->quirks->wmi_force_als_set) 2608 asus_wmi_set_als(); 2609 2610 /* Some Asus desktop boards export an acpi-video backlight interface, 2611 stop this from showing up */ 2612 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); 2613 if (chassis_type && !strcmp(chassis_type, "3")) 2614 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2615 2616 if (asus->driver->quirks->wmi_backlight_power) 2617 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2618 2619 if (asus->driver->quirks->wmi_backlight_native) 2620 acpi_video_set_dmi_backlight_type(acpi_backlight_native); 2621 2622 if (asus->driver->quirks->xusb2pr) 2623 asus_wmi_set_xusb2pr(asus); 2624 2625 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 2626 err = asus_wmi_backlight_init(asus); 2627 if (err && err != -ENODEV) 2628 goto fail_backlight; 2629 } else if (asus->driver->quirks->wmi_backlight_set_devstate) 2630 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL); 2631 2632 if (asus_wmi_has_fnlock_key(asus)) { 2633 asus->fnlock_locked = true; 2634 asus_wmi_fnlock_update(asus); 2635 } 2636 2637 status = wmi_install_notify_handler(asus->driver->event_guid, 2638 asus_wmi_notify, asus); 2639 if (ACPI_FAILURE(status)) { 2640 pr_err("Unable to register notify handler - %d\n", status); 2641 err = -ENODEV; 2642 goto fail_wmi_handler; 2643 } 2644 2645 asus_wmi_battery_init(asus); 2646 2647 asus_wmi_debugfs_init(asus); 2648 2649 return 0; 2650 2651 fail_wmi_handler: 2652 asus_wmi_backlight_exit(asus); 2653 fail_backlight: 2654 asus_wmi_rfkill_exit(asus); 2655 fail_rfkill: 2656 asus_wmi_led_exit(asus); 2657 fail_leds: 2658 fail_hwmon: 2659 asus_wmi_input_exit(asus); 2660 fail_input: 2661 asus_wmi_sysfs_exit(asus->platform_device); 2662 fail_sysfs: 2663 fail_throttle_thermal_policy: 2664 fail_fan_boost_mode: 2665 fail_platform: 2666 kfree(asus); 2667 return err; 2668 } 2669 2670 static int asus_wmi_remove(struct platform_device *device) 2671 { 2672 struct asus_wmi *asus; 2673 2674 asus = platform_get_drvdata(device); 2675 wmi_remove_notify_handler(asus->driver->event_guid); 2676 asus_wmi_backlight_exit(asus); 2677 asus_wmi_input_exit(asus); 2678 asus_wmi_led_exit(asus); 2679 asus_wmi_rfkill_exit(asus); 2680 asus_wmi_debugfs_exit(asus); 2681 asus_wmi_sysfs_exit(asus->platform_device); 2682 asus_fan_set_auto(asus); 2683 asus_wmi_battery_exit(asus); 2684 2685 kfree(asus); 2686 return 0; 2687 } 2688 2689 /* Platform driver - hibernate/resume callbacks *******************************/ 2690 2691 static int asus_hotk_thaw(struct device *device) 2692 { 2693 struct asus_wmi *asus = dev_get_drvdata(device); 2694 2695 if (asus->wlan.rfkill) { 2696 bool wlan; 2697 2698 /* 2699 * Work around bios bug - acpi _PTS turns off the wireless led 2700 * during suspend. Normally it restores it on resume, but 2701 * we should kick it ourselves in case hibernation is aborted. 2702 */ 2703 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 2704 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL); 2705 } 2706 2707 return 0; 2708 } 2709 2710 static int asus_hotk_resume(struct device *device) 2711 { 2712 struct asus_wmi *asus = dev_get_drvdata(device); 2713 2714 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2715 kbd_led_update(asus); 2716 2717 if (asus_wmi_has_fnlock_key(asus)) 2718 asus_wmi_fnlock_update(asus); 2719 return 0; 2720 } 2721 2722 static int asus_hotk_restore(struct device *device) 2723 { 2724 struct asus_wmi *asus = dev_get_drvdata(device); 2725 int bl; 2726 2727 /* Refresh both wlan rfkill state and pci hotplug */ 2728 if (asus->wlan.rfkill) 2729 asus_rfkill_hotplug(asus); 2730 2731 if (asus->bluetooth.rfkill) { 2732 bl = !asus_wmi_get_devstate_simple(asus, 2733 ASUS_WMI_DEVID_BLUETOOTH); 2734 rfkill_set_sw_state(asus->bluetooth.rfkill, bl); 2735 } 2736 if (asus->wimax.rfkill) { 2737 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX); 2738 rfkill_set_sw_state(asus->wimax.rfkill, bl); 2739 } 2740 if (asus->wwan3g.rfkill) { 2741 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G); 2742 rfkill_set_sw_state(asus->wwan3g.rfkill, bl); 2743 } 2744 if (asus->gps.rfkill) { 2745 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS); 2746 rfkill_set_sw_state(asus->gps.rfkill, bl); 2747 } 2748 if (asus->uwb.rfkill) { 2749 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB); 2750 rfkill_set_sw_state(asus->uwb.rfkill, bl); 2751 } 2752 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2753 kbd_led_update(asus); 2754 2755 if (asus_wmi_has_fnlock_key(asus)) 2756 asus_wmi_fnlock_update(asus); 2757 return 0; 2758 } 2759 2760 static const struct dev_pm_ops asus_pm_ops = { 2761 .thaw = asus_hotk_thaw, 2762 .restore = asus_hotk_restore, 2763 .resume = asus_hotk_resume, 2764 }; 2765 2766 /* Registration ***************************************************************/ 2767 2768 static int asus_wmi_probe(struct platform_device *pdev) 2769 { 2770 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2771 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2772 int ret; 2773 2774 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 2775 pr_warn("ASUS Management GUID not found\n"); 2776 return -ENODEV; 2777 } 2778 2779 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) { 2780 pr_warn("ASUS Event GUID not found\n"); 2781 return -ENODEV; 2782 } 2783 2784 if (wdrv->probe) { 2785 ret = wdrv->probe(pdev); 2786 if (ret) 2787 return ret; 2788 } 2789 2790 return asus_wmi_add(pdev); 2791 } 2792 2793 static bool used; 2794 2795 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver) 2796 { 2797 struct platform_driver *platform_driver; 2798 struct platform_device *platform_device; 2799 2800 if (used) 2801 return -EBUSY; 2802 2803 platform_driver = &driver->platform_driver; 2804 platform_driver->remove = asus_wmi_remove; 2805 platform_driver->driver.owner = driver->owner; 2806 platform_driver->driver.name = driver->name; 2807 platform_driver->driver.pm = &asus_pm_ops; 2808 2809 platform_device = platform_create_bundle(platform_driver, 2810 asus_wmi_probe, 2811 NULL, 0, NULL, 0); 2812 if (IS_ERR(platform_device)) 2813 return PTR_ERR(platform_device); 2814 2815 used = true; 2816 return 0; 2817 } 2818 EXPORT_SYMBOL_GPL(asus_wmi_register_driver); 2819 2820 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver) 2821 { 2822 platform_device_unregister(driver->platform_device); 2823 platform_driver_unregister(&driver->platform_driver); 2824 used = false; 2825 } 2826 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver); 2827 2828 static int __init asus_wmi_init(void) 2829 { 2830 pr_info("ASUS WMI generic driver loaded\n"); 2831 return 0; 2832 } 2833 2834 static void __exit asus_wmi_exit(void) 2835 { 2836 pr_info("ASUS WMI generic driver unloaded\n"); 2837 } 2838 2839 module_init(asus_wmi_init); 2840 module_exit(asus_wmi_exit); 2841