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 #define NOTIFY_LID_FLIP 0xfa 67 68 #define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0) 69 70 #define ASUS_FAN_DESC "cpu_fan" 71 #define ASUS_FAN_MFUN 0x13 72 #define ASUS_FAN_SFUN_READ 0x06 73 #define ASUS_FAN_SFUN_WRITE 0x07 74 75 /* Based on standard hwmon pwmX_enable values */ 76 #define ASUS_FAN_CTRL_FULLSPEED 0 77 #define ASUS_FAN_CTRL_MANUAL 1 78 #define ASUS_FAN_CTRL_AUTO 2 79 80 #define ASUS_FAN_BOOST_MODE_NORMAL 0 81 #define ASUS_FAN_BOOST_MODE_OVERBOOST 1 82 #define ASUS_FAN_BOOST_MODE_OVERBOOST_MASK 0x01 83 #define ASUS_FAN_BOOST_MODE_SILENT 2 84 #define ASUS_FAN_BOOST_MODE_SILENT_MASK 0x02 85 #define ASUS_FAN_BOOST_MODES_MASK 0x03 86 87 #define ASUS_THROTTLE_THERMAL_POLICY_DEFAULT 0 88 #define ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST 1 89 #define ASUS_THROTTLE_THERMAL_POLICY_SILENT 2 90 91 #define USB_INTEL_XUSB2PR 0xD0 92 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31 93 94 #define ASUS_ACPI_UID_ASUSWMI "ASUSWMI" 95 #define ASUS_ACPI_UID_ATK "ATK" 96 97 #define WMI_EVENT_QUEUE_SIZE 0x10 98 #define WMI_EVENT_QUEUE_END 0x1 99 #define WMI_EVENT_MASK 0xFFFF 100 /* The WMI hotkey event value is always the same. */ 101 #define WMI_EVENT_VALUE_ATK 0xFF 102 103 #define WMI_EVENT_MASK 0xFFFF 104 105 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL }; 106 107 static bool ashs_present(void) 108 { 109 int i = 0; 110 while (ashs_ids[i]) { 111 if (acpi_dev_found(ashs_ids[i++])) 112 return true; 113 } 114 return false; 115 } 116 117 struct bios_args { 118 u32 arg0; 119 u32 arg1; 120 u32 arg2; /* At least TUF Gaming series uses 3 dword input buffer. */ 121 u32 arg4; 122 u32 arg5; 123 } __packed; 124 125 /* 126 * Struct that's used for all methods called via AGFN. Naming is 127 * identically to the AML code. 128 */ 129 struct agfn_args { 130 u16 mfun; /* probably "Multi-function" to be called */ 131 u16 sfun; /* probably "Sub-function" to be called */ 132 u16 len; /* size of the hole struct, including subfunction fields */ 133 u8 stas; /* not used by now */ 134 u8 err; /* zero on success */ 135 } __packed; 136 137 /* struct used for calling fan read and write methods */ 138 struct agfn_fan_args { 139 struct agfn_args agfn; /* common fields */ 140 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */ 141 u32 speed; /* read: RPM/100 - write: 0-255 */ 142 } __packed; 143 144 /* 145 * <platform>/ - debugfs root directory 146 * dev_id - current dev_id 147 * ctrl_param - current ctrl_param 148 * method_id - current method_id 149 * devs - call DEVS(dev_id, ctrl_param) and print result 150 * dsts - call DSTS(dev_id) and print result 151 * call - call method_id(dev_id, ctrl_param) and print result 152 */ 153 struct asus_wmi_debug { 154 struct dentry *root; 155 u32 method_id; 156 u32 dev_id; 157 u32 ctrl_param; 158 }; 159 160 struct asus_rfkill { 161 struct asus_wmi *asus; 162 struct rfkill *rfkill; 163 u32 dev_id; 164 }; 165 166 enum fan_type { 167 FAN_TYPE_NONE = 0, 168 FAN_TYPE_AGFN, /* deprecated on newer platforms */ 169 FAN_TYPE_SPEC83, /* starting in Spec 8.3, use CPU_FAN_CTRL */ 170 }; 171 172 struct asus_wmi { 173 int dsts_id; 174 int spec; 175 int sfun; 176 bool wmi_event_queue; 177 178 struct input_dev *inputdev; 179 struct backlight_device *backlight_device; 180 struct platform_device *platform_device; 181 182 struct led_classdev wlan_led; 183 int wlan_led_wk; 184 struct led_classdev tpd_led; 185 int tpd_led_wk; 186 struct led_classdev kbd_led; 187 int kbd_led_wk; 188 struct led_classdev lightbar_led; 189 int lightbar_led_wk; 190 struct workqueue_struct *led_workqueue; 191 struct work_struct tpd_led_work; 192 struct work_struct wlan_led_work; 193 struct work_struct lightbar_led_work; 194 195 struct asus_rfkill wlan; 196 struct asus_rfkill bluetooth; 197 struct asus_rfkill wimax; 198 struct asus_rfkill wwan3g; 199 struct asus_rfkill gps; 200 struct asus_rfkill uwb; 201 202 enum fan_type fan_type; 203 int fan_pwm_mode; 204 int agfn_pwm; 205 206 bool fan_boost_mode_available; 207 u8 fan_boost_mode_mask; 208 u8 fan_boost_mode; 209 210 bool throttle_thermal_policy_available; 211 u8 throttle_thermal_policy_mode; 212 213 // The RSOC controls the maximum charging percentage. 214 bool battery_rsoc_available; 215 216 struct hotplug_slot hotplug_slot; 217 struct mutex hotplug_lock; 218 struct mutex wmi_lock; 219 struct workqueue_struct *hotplug_workqueue; 220 struct work_struct hotplug_work; 221 222 bool fnlock_locked; 223 224 struct asus_wmi_debug debug; 225 226 struct asus_wmi_driver *driver; 227 }; 228 229 /* WMI ************************************************************************/ 230 231 static int asus_wmi_evaluate_method3(u32 method_id, 232 u32 arg0, u32 arg1, u32 arg2, u32 *retval) 233 { 234 struct bios_args args = { 235 .arg0 = arg0, 236 .arg1 = arg1, 237 .arg2 = arg2, 238 }; 239 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 240 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 241 acpi_status status; 242 union acpi_object *obj; 243 u32 tmp = 0; 244 245 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id, 246 &input, &output); 247 248 if (ACPI_FAILURE(status)) 249 return -EIO; 250 251 obj = (union acpi_object *)output.pointer; 252 if (obj && obj->type == ACPI_TYPE_INTEGER) 253 tmp = (u32) obj->integer.value; 254 255 if (retval) 256 *retval = tmp; 257 258 kfree(obj); 259 260 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD) 261 return -ENODEV; 262 263 return 0; 264 } 265 266 int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval) 267 { 268 return asus_wmi_evaluate_method3(method_id, arg0, arg1, 0, retval); 269 } 270 EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method); 271 272 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args) 273 { 274 struct acpi_buffer input; 275 u64 phys_addr; 276 u32 retval; 277 u32 status; 278 279 /* 280 * Copy to dma capable address otherwise memory corruption occurs as 281 * bios has to be able to access it. 282 */ 283 input.pointer = kmemdup(args.pointer, args.length, GFP_DMA | GFP_KERNEL); 284 input.length = args.length; 285 if (!input.pointer) 286 return -ENOMEM; 287 phys_addr = virt_to_phys(input.pointer); 288 289 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN, 290 phys_addr, 0, &retval); 291 if (!status) 292 memcpy(args.pointer, input.pointer, args.length); 293 294 kfree(input.pointer); 295 if (status) 296 return -ENXIO; 297 298 return retval; 299 } 300 301 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval) 302 { 303 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval); 304 } 305 306 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, 307 u32 *retval) 308 { 309 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id, 310 ctrl_param, retval); 311 } 312 313 /* Helper for special devices with magic return codes */ 314 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus, 315 u32 dev_id, u32 mask) 316 { 317 u32 retval = 0; 318 int err; 319 320 err = asus_wmi_get_devstate(asus, dev_id, &retval); 321 if (err < 0) 322 return err; 323 324 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT)) 325 return -ENODEV; 326 327 if (mask == ASUS_WMI_DSTS_STATUS_BIT) { 328 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT) 329 return -ENODEV; 330 } 331 332 return retval & mask; 333 } 334 335 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id) 336 { 337 return asus_wmi_get_devstate_bits(asus, dev_id, 338 ASUS_WMI_DSTS_STATUS_BIT); 339 } 340 341 static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id) 342 { 343 u32 retval; 344 int status = asus_wmi_get_devstate(asus, dev_id, &retval); 345 346 return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT); 347 } 348 349 /* Input **********************************************************************/ 350 351 static int asus_wmi_input_init(struct asus_wmi *asus) 352 { 353 int err, result; 354 355 asus->inputdev = input_allocate_device(); 356 if (!asus->inputdev) 357 return -ENOMEM; 358 359 asus->inputdev->name = asus->driver->input_name; 360 asus->inputdev->phys = asus->driver->input_phys; 361 asus->inputdev->id.bustype = BUS_HOST; 362 asus->inputdev->dev.parent = &asus->platform_device->dev; 363 set_bit(EV_REP, asus->inputdev->evbit); 364 365 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL); 366 if (err) 367 goto err_free_dev; 368 369 if (asus->driver->quirks->use_kbd_dock_devid) { 370 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_KBD_DOCK); 371 if (result >= 0) { 372 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE); 373 input_report_switch(asus->inputdev, SW_TABLET_MODE, !result); 374 } else if (result != -ENODEV) { 375 pr_err("Error checking for keyboard-dock: %d\n", result); 376 } 377 } 378 379 if (asus->driver->quirks->use_lid_flip_devid) { 380 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP); 381 if (result < 0) 382 asus->driver->quirks->use_lid_flip_devid = 0; 383 if (result >= 0) { 384 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE); 385 input_report_switch(asus->inputdev, SW_TABLET_MODE, result); 386 } else if (result == -ENODEV) { 387 pr_err("This device has lid_flip quirk but got ENODEV checking it. This is a bug."); 388 } else { 389 pr_err("Error checking for lid-flip: %d\n", result); 390 } 391 } 392 393 err = input_register_device(asus->inputdev); 394 if (err) 395 goto err_free_dev; 396 397 return 0; 398 399 err_free_dev: 400 input_free_device(asus->inputdev); 401 return err; 402 } 403 404 static void asus_wmi_input_exit(struct asus_wmi *asus) 405 { 406 if (asus->inputdev) 407 input_unregister_device(asus->inputdev); 408 409 asus->inputdev = NULL; 410 } 411 412 /* Tablet mode ****************************************************************/ 413 414 static void lid_flip_tablet_mode_get_state(struct asus_wmi *asus) 415 { 416 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP); 417 418 if (result >= 0) { 419 input_report_switch(asus->inputdev, SW_TABLET_MODE, result); 420 input_sync(asus->inputdev); 421 } 422 } 423 424 /* Battery ********************************************************************/ 425 426 /* The battery maximum charging percentage */ 427 static int charge_end_threshold; 428 429 static ssize_t charge_control_end_threshold_store(struct device *dev, 430 struct device_attribute *attr, 431 const char *buf, size_t count) 432 { 433 int value, ret, rv; 434 435 ret = kstrtouint(buf, 10, &value); 436 if (ret) 437 return ret; 438 439 if (value < 0 || value > 100) 440 return -EINVAL; 441 442 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv); 443 if (ret) 444 return ret; 445 446 if (rv != 1) 447 return -EIO; 448 449 /* There isn't any method in the DSDT to read the threshold, so we 450 * save the threshold. 451 */ 452 charge_end_threshold = value; 453 return count; 454 } 455 456 static ssize_t charge_control_end_threshold_show(struct device *device, 457 struct device_attribute *attr, 458 char *buf) 459 { 460 return sprintf(buf, "%d\n", charge_end_threshold); 461 } 462 463 static DEVICE_ATTR_RW(charge_control_end_threshold); 464 465 static int asus_wmi_battery_add(struct power_supply *battery) 466 { 467 /* The WMI method does not provide a way to specific a battery, so we 468 * just assume it is the first battery. 469 * Note: On some newer ASUS laptops (Zenbook UM431DA), the primary/first 470 * battery is named BATT. 471 */ 472 if (strcmp(battery->desc->name, "BAT0") != 0 && 473 strcmp(battery->desc->name, "BAT1") != 0 && 474 strcmp(battery->desc->name, "BATC") != 0 && 475 strcmp(battery->desc->name, "BATT") != 0) 476 return -ENODEV; 477 478 if (device_create_file(&battery->dev, 479 &dev_attr_charge_control_end_threshold)) 480 return -ENODEV; 481 482 /* The charge threshold is only reset when the system is power cycled, 483 * and we can't get the current threshold so let set it to 100% when 484 * a battery is added. 485 */ 486 asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL); 487 charge_end_threshold = 100; 488 489 return 0; 490 } 491 492 static int asus_wmi_battery_remove(struct power_supply *battery) 493 { 494 device_remove_file(&battery->dev, 495 &dev_attr_charge_control_end_threshold); 496 return 0; 497 } 498 499 static struct acpi_battery_hook battery_hook = { 500 .add_battery = asus_wmi_battery_add, 501 .remove_battery = asus_wmi_battery_remove, 502 .name = "ASUS Battery Extension", 503 }; 504 505 static void asus_wmi_battery_init(struct asus_wmi *asus) 506 { 507 asus->battery_rsoc_available = false; 508 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) { 509 asus->battery_rsoc_available = true; 510 battery_hook_register(&battery_hook); 511 } 512 } 513 514 static void asus_wmi_battery_exit(struct asus_wmi *asus) 515 { 516 if (asus->battery_rsoc_available) 517 battery_hook_unregister(&battery_hook); 518 } 519 520 /* LEDs ***********************************************************************/ 521 522 /* 523 * These functions actually update the LED's, and are called from a 524 * workqueue. By doing this as separate work rather than when the LED 525 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 526 * potentially bad time, such as a timer interrupt. 527 */ 528 static void tpd_led_update(struct work_struct *work) 529 { 530 int ctrl_param; 531 struct asus_wmi *asus; 532 533 asus = container_of(work, struct asus_wmi, tpd_led_work); 534 535 ctrl_param = asus->tpd_led_wk; 536 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL); 537 } 538 539 static void tpd_led_set(struct led_classdev *led_cdev, 540 enum led_brightness value) 541 { 542 struct asus_wmi *asus; 543 544 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 545 546 asus->tpd_led_wk = !!value; 547 queue_work(asus->led_workqueue, &asus->tpd_led_work); 548 } 549 550 static int read_tpd_led_state(struct asus_wmi *asus) 551 { 552 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED); 553 } 554 555 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) 556 { 557 struct asus_wmi *asus; 558 559 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 560 561 return read_tpd_led_state(asus); 562 } 563 564 static void kbd_led_update(struct asus_wmi *asus) 565 { 566 int ctrl_param = 0; 567 568 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F); 569 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL); 570 } 571 572 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env) 573 { 574 int retval; 575 576 /* 577 * bits 0-2: level 578 * bit 7: light on/off 579 * bit 8-10: environment (0: dark, 1: normal, 2: light) 580 * bit 17: status unknown 581 */ 582 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT, 583 0xFFFF); 584 585 /* Unknown status is considered as off */ 586 if (retval == 0x8000) 587 retval = 0; 588 589 if (retval < 0) 590 return retval; 591 592 if (level) 593 *level = retval & 0x7F; 594 if (env) 595 *env = (retval >> 8) & 0x7F; 596 return 0; 597 } 598 599 static void do_kbd_led_set(struct led_classdev *led_cdev, int value) 600 { 601 struct asus_wmi *asus; 602 int max_level; 603 604 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 605 max_level = asus->kbd_led.max_brightness; 606 607 asus->kbd_led_wk = clamp_val(value, 0, max_level); 608 kbd_led_update(asus); 609 } 610 611 static void kbd_led_set(struct led_classdev *led_cdev, 612 enum led_brightness value) 613 { 614 /* Prevent disabling keyboard backlight on module unregister */ 615 if (led_cdev->flags & LED_UNREGISTERING) 616 return; 617 618 do_kbd_led_set(led_cdev, value); 619 } 620 621 static void kbd_led_set_by_kbd(struct asus_wmi *asus, enum led_brightness value) 622 { 623 struct led_classdev *led_cdev = &asus->kbd_led; 624 625 do_kbd_led_set(led_cdev, value); 626 led_classdev_notify_brightness_hw_changed(led_cdev, asus->kbd_led_wk); 627 } 628 629 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev) 630 { 631 struct asus_wmi *asus; 632 int retval, value; 633 634 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 635 636 retval = kbd_led_read(asus, &value, NULL); 637 if (retval < 0) 638 return retval; 639 640 return value; 641 } 642 643 static int wlan_led_unknown_state(struct asus_wmi *asus) 644 { 645 u32 result; 646 647 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 648 649 return result & ASUS_WMI_DSTS_UNKNOWN_BIT; 650 } 651 652 static void wlan_led_update(struct work_struct *work) 653 { 654 int ctrl_param; 655 struct asus_wmi *asus; 656 657 asus = container_of(work, struct asus_wmi, wlan_led_work); 658 659 ctrl_param = asus->wlan_led_wk; 660 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL); 661 } 662 663 static void wlan_led_set(struct led_classdev *led_cdev, 664 enum led_brightness value) 665 { 666 struct asus_wmi *asus; 667 668 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 669 670 asus->wlan_led_wk = !!value; 671 queue_work(asus->led_workqueue, &asus->wlan_led_work); 672 } 673 674 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev) 675 { 676 struct asus_wmi *asus; 677 u32 result; 678 679 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 680 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 681 682 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 683 } 684 685 static void lightbar_led_update(struct work_struct *work) 686 { 687 struct asus_wmi *asus; 688 int ctrl_param; 689 690 asus = container_of(work, struct asus_wmi, lightbar_led_work); 691 692 ctrl_param = asus->lightbar_led_wk; 693 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL); 694 } 695 696 static void lightbar_led_set(struct led_classdev *led_cdev, 697 enum led_brightness value) 698 { 699 struct asus_wmi *asus; 700 701 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 702 703 asus->lightbar_led_wk = !!value; 704 queue_work(asus->led_workqueue, &asus->lightbar_led_work); 705 } 706 707 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev) 708 { 709 struct asus_wmi *asus; 710 u32 result; 711 712 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 713 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result); 714 715 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK; 716 } 717 718 static void asus_wmi_led_exit(struct asus_wmi *asus) 719 { 720 led_classdev_unregister(&asus->kbd_led); 721 led_classdev_unregister(&asus->tpd_led); 722 led_classdev_unregister(&asus->wlan_led); 723 led_classdev_unregister(&asus->lightbar_led); 724 725 if (asus->led_workqueue) 726 destroy_workqueue(asus->led_workqueue); 727 } 728 729 static int asus_wmi_led_init(struct asus_wmi *asus) 730 { 731 int rv = 0, led_val; 732 733 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 734 if (!asus->led_workqueue) 735 return -ENOMEM; 736 737 if (read_tpd_led_state(asus) >= 0) { 738 INIT_WORK(&asus->tpd_led_work, tpd_led_update); 739 740 asus->tpd_led.name = "asus::touchpad"; 741 asus->tpd_led.brightness_set = tpd_led_set; 742 asus->tpd_led.brightness_get = tpd_led_get; 743 asus->tpd_led.max_brightness = 1; 744 745 rv = led_classdev_register(&asus->platform_device->dev, 746 &asus->tpd_led); 747 if (rv) 748 goto error; 749 } 750 751 if (!kbd_led_read(asus, &led_val, NULL)) { 752 asus->kbd_led_wk = led_val; 753 asus->kbd_led.name = "asus::kbd_backlight"; 754 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED; 755 asus->kbd_led.brightness_set = kbd_led_set; 756 asus->kbd_led.brightness_get = kbd_led_get; 757 asus->kbd_led.max_brightness = 3; 758 759 rv = led_classdev_register(&asus->platform_device->dev, 760 &asus->kbd_led); 761 if (rv) 762 goto error; 763 } 764 765 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_WIRELESS_LED) 766 && (asus->driver->quirks->wapf > 0)) { 767 INIT_WORK(&asus->wlan_led_work, wlan_led_update); 768 769 asus->wlan_led.name = "asus::wlan"; 770 asus->wlan_led.brightness_set = wlan_led_set; 771 if (!wlan_led_unknown_state(asus)) 772 asus->wlan_led.brightness_get = wlan_led_get; 773 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME; 774 asus->wlan_led.max_brightness = 1; 775 asus->wlan_led.default_trigger = "asus-wlan"; 776 777 rv = led_classdev_register(&asus->platform_device->dev, 778 &asus->wlan_led); 779 if (rv) 780 goto error; 781 } 782 783 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_LIGHTBAR)) { 784 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update); 785 786 asus->lightbar_led.name = "asus::lightbar"; 787 asus->lightbar_led.brightness_set = lightbar_led_set; 788 asus->lightbar_led.brightness_get = lightbar_led_get; 789 asus->lightbar_led.max_brightness = 1; 790 791 rv = led_classdev_register(&asus->platform_device->dev, 792 &asus->lightbar_led); 793 } 794 795 error: 796 if (rv) 797 asus_wmi_led_exit(asus); 798 799 return rv; 800 } 801 802 /* RF *************************************************************************/ 803 804 /* 805 * PCI hotplug (for wlan rfkill) 806 */ 807 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus) 808 { 809 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 810 811 if (result < 0) 812 return false; 813 return !result; 814 } 815 816 static void asus_rfkill_hotplug(struct asus_wmi *asus) 817 { 818 struct pci_dev *dev; 819 struct pci_bus *bus; 820 bool blocked; 821 bool absent; 822 u32 l; 823 824 mutex_lock(&asus->wmi_lock); 825 blocked = asus_wlan_rfkill_blocked(asus); 826 mutex_unlock(&asus->wmi_lock); 827 828 mutex_lock(&asus->hotplug_lock); 829 pci_lock_rescan_remove(); 830 831 if (asus->wlan.rfkill) 832 rfkill_set_sw_state(asus->wlan.rfkill, blocked); 833 834 if (asus->hotplug_slot.ops) { 835 bus = pci_find_bus(0, 1); 836 if (!bus) { 837 pr_warn("Unable to find PCI bus 1?\n"); 838 goto out_unlock; 839 } 840 841 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) { 842 pr_err("Unable to read PCI config space?\n"); 843 goto out_unlock; 844 } 845 absent = (l == 0xffffffff); 846 847 if (blocked != absent) { 848 pr_warn("BIOS says wireless lan is %s, " 849 "but the pci device is %s\n", 850 blocked ? "blocked" : "unblocked", 851 absent ? "absent" : "present"); 852 pr_warn("skipped wireless hotplug as probably " 853 "inappropriate for this model\n"); 854 goto out_unlock; 855 } 856 857 if (!blocked) { 858 dev = pci_get_slot(bus, 0); 859 if (dev) { 860 /* Device already present */ 861 pci_dev_put(dev); 862 goto out_unlock; 863 } 864 dev = pci_scan_single_device(bus, 0); 865 if (dev) { 866 pci_bus_assign_resources(bus); 867 pci_bus_add_device(dev); 868 } 869 } else { 870 dev = pci_get_slot(bus, 0); 871 if (dev) { 872 pci_stop_and_remove_bus_device(dev); 873 pci_dev_put(dev); 874 } 875 } 876 } 877 878 out_unlock: 879 pci_unlock_rescan_remove(); 880 mutex_unlock(&asus->hotplug_lock); 881 } 882 883 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data) 884 { 885 struct asus_wmi *asus = data; 886 887 if (event != ACPI_NOTIFY_BUS_CHECK) 888 return; 889 890 /* 891 * We can't call directly asus_rfkill_hotplug because most 892 * of the time WMBC is still being executed and not reetrant. 893 * There is currently no way to tell ACPICA that we want this 894 * method to be serialized, we schedule a asus_rfkill_hotplug 895 * call later, in a safer context. 896 */ 897 queue_work(asus->hotplug_workqueue, &asus->hotplug_work); 898 } 899 900 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node) 901 { 902 acpi_status status; 903 acpi_handle handle; 904 905 status = acpi_get_handle(NULL, node, &handle); 906 if (ACPI_FAILURE(status)) 907 return -ENODEV; 908 909 status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY, 910 asus_rfkill_notify, asus); 911 if (ACPI_FAILURE(status)) 912 pr_warn("Failed to register notify on %s\n", node); 913 914 return 0; 915 } 916 917 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node) 918 { 919 acpi_status status = AE_OK; 920 acpi_handle handle; 921 922 status = acpi_get_handle(NULL, node, &handle); 923 if (ACPI_FAILURE(status)) 924 return; 925 926 status = acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY, 927 asus_rfkill_notify); 928 if (ACPI_FAILURE(status)) 929 pr_err("Error removing rfkill notify handler %s\n", node); 930 } 931 932 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot, 933 u8 *value) 934 { 935 struct asus_wmi *asus = container_of(hotplug_slot, 936 struct asus_wmi, hotplug_slot); 937 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 938 939 if (result < 0) 940 return result; 941 942 *value = !!result; 943 return 0; 944 } 945 946 static const struct hotplug_slot_ops asus_hotplug_slot_ops = { 947 .get_adapter_status = asus_get_adapter_status, 948 .get_power_status = asus_get_adapter_status, 949 }; 950 951 static void asus_hotplug_work(struct work_struct *work) 952 { 953 struct asus_wmi *asus; 954 955 asus = container_of(work, struct asus_wmi, hotplug_work); 956 asus_rfkill_hotplug(asus); 957 } 958 959 static int asus_setup_pci_hotplug(struct asus_wmi *asus) 960 { 961 int ret = -ENOMEM; 962 struct pci_bus *bus = pci_find_bus(0, 1); 963 964 if (!bus) { 965 pr_err("Unable to find wifi PCI bus\n"); 966 return -ENODEV; 967 } 968 969 asus->hotplug_workqueue = 970 create_singlethread_workqueue("hotplug_workqueue"); 971 if (!asus->hotplug_workqueue) 972 goto error_workqueue; 973 974 INIT_WORK(&asus->hotplug_work, asus_hotplug_work); 975 976 asus->hotplug_slot.ops = &asus_hotplug_slot_ops; 977 978 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi"); 979 if (ret) { 980 pr_err("Unable to register hotplug slot - %d\n", ret); 981 goto error_register; 982 } 983 984 return 0; 985 986 error_register: 987 asus->hotplug_slot.ops = NULL; 988 destroy_workqueue(asus->hotplug_workqueue); 989 error_workqueue: 990 return ret; 991 } 992 993 /* 994 * Rfkill devices 995 */ 996 static int asus_rfkill_set(void *data, bool blocked) 997 { 998 struct asus_rfkill *priv = data; 999 u32 ctrl_param = !blocked; 1000 u32 dev_id = priv->dev_id; 1001 1002 /* 1003 * If the user bit is set, BIOS can't set and record the wlan status, 1004 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED 1005 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN). 1006 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED 1007 * while setting the wlan status through WMI. 1008 * This is also the behavior that windows app will do. 1009 */ 1010 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 1011 priv->asus->driver->wlan_ctrl_by_user) 1012 dev_id = ASUS_WMI_DEVID_WLAN_LED; 1013 1014 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL); 1015 } 1016 1017 static void asus_rfkill_query(struct rfkill *rfkill, void *data) 1018 { 1019 struct asus_rfkill *priv = data; 1020 int result; 1021 1022 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id); 1023 1024 if (result < 0) 1025 return; 1026 1027 rfkill_set_sw_state(priv->rfkill, !result); 1028 } 1029 1030 static int asus_rfkill_wlan_set(void *data, bool blocked) 1031 { 1032 struct asus_rfkill *priv = data; 1033 struct asus_wmi *asus = priv->asus; 1034 int ret; 1035 1036 /* 1037 * This handler is enabled only if hotplug is enabled. 1038 * In this case, the asus_wmi_set_devstate() will 1039 * trigger a wmi notification and we need to wait 1040 * this call to finish before being able to call 1041 * any wmi method 1042 */ 1043 mutex_lock(&asus->wmi_lock); 1044 ret = asus_rfkill_set(data, blocked); 1045 mutex_unlock(&asus->wmi_lock); 1046 return ret; 1047 } 1048 1049 static const struct rfkill_ops asus_rfkill_wlan_ops = { 1050 .set_block = asus_rfkill_wlan_set, 1051 .query = asus_rfkill_query, 1052 }; 1053 1054 static const struct rfkill_ops asus_rfkill_ops = { 1055 .set_block = asus_rfkill_set, 1056 .query = asus_rfkill_query, 1057 }; 1058 1059 static int asus_new_rfkill(struct asus_wmi *asus, 1060 struct asus_rfkill *arfkill, 1061 const char *name, enum rfkill_type type, int dev_id) 1062 { 1063 int result = asus_wmi_get_devstate_simple(asus, dev_id); 1064 struct rfkill **rfkill = &arfkill->rfkill; 1065 1066 if (result < 0) 1067 return result; 1068 1069 arfkill->dev_id = dev_id; 1070 arfkill->asus = asus; 1071 1072 if (dev_id == ASUS_WMI_DEVID_WLAN && 1073 asus->driver->quirks->hotplug_wireless) 1074 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1075 &asus_rfkill_wlan_ops, arfkill); 1076 else 1077 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1078 &asus_rfkill_ops, arfkill); 1079 1080 if (!*rfkill) 1081 return -EINVAL; 1082 1083 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 1084 (asus->driver->quirks->wapf > 0)) 1085 rfkill_set_led_trigger_name(*rfkill, "asus-wlan"); 1086 1087 rfkill_init_sw_state(*rfkill, !result); 1088 result = rfkill_register(*rfkill); 1089 if (result) { 1090 rfkill_destroy(*rfkill); 1091 *rfkill = NULL; 1092 return result; 1093 } 1094 return 0; 1095 } 1096 1097 static void asus_wmi_rfkill_exit(struct asus_wmi *asus) 1098 { 1099 if (asus->driver->wlan_ctrl_by_user && ashs_present()) 1100 return; 1101 1102 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1103 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1104 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1105 if (asus->wlan.rfkill) { 1106 rfkill_unregister(asus->wlan.rfkill); 1107 rfkill_destroy(asus->wlan.rfkill); 1108 asus->wlan.rfkill = NULL; 1109 } 1110 /* 1111 * Refresh pci hotplug in case the rfkill state was changed after 1112 * asus_unregister_rfkill_notifier() 1113 */ 1114 asus_rfkill_hotplug(asus); 1115 if (asus->hotplug_slot.ops) 1116 pci_hp_deregister(&asus->hotplug_slot); 1117 if (asus->hotplug_workqueue) 1118 destroy_workqueue(asus->hotplug_workqueue); 1119 1120 if (asus->bluetooth.rfkill) { 1121 rfkill_unregister(asus->bluetooth.rfkill); 1122 rfkill_destroy(asus->bluetooth.rfkill); 1123 asus->bluetooth.rfkill = NULL; 1124 } 1125 if (asus->wimax.rfkill) { 1126 rfkill_unregister(asus->wimax.rfkill); 1127 rfkill_destroy(asus->wimax.rfkill); 1128 asus->wimax.rfkill = NULL; 1129 } 1130 if (asus->wwan3g.rfkill) { 1131 rfkill_unregister(asus->wwan3g.rfkill); 1132 rfkill_destroy(asus->wwan3g.rfkill); 1133 asus->wwan3g.rfkill = NULL; 1134 } 1135 if (asus->gps.rfkill) { 1136 rfkill_unregister(asus->gps.rfkill); 1137 rfkill_destroy(asus->gps.rfkill); 1138 asus->gps.rfkill = NULL; 1139 } 1140 if (asus->uwb.rfkill) { 1141 rfkill_unregister(asus->uwb.rfkill); 1142 rfkill_destroy(asus->uwb.rfkill); 1143 asus->uwb.rfkill = NULL; 1144 } 1145 } 1146 1147 static int asus_wmi_rfkill_init(struct asus_wmi *asus) 1148 { 1149 int result = 0; 1150 1151 mutex_init(&asus->hotplug_lock); 1152 mutex_init(&asus->wmi_lock); 1153 1154 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan", 1155 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN); 1156 1157 if (result && result != -ENODEV) 1158 goto exit; 1159 1160 result = asus_new_rfkill(asus, &asus->bluetooth, 1161 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH, 1162 ASUS_WMI_DEVID_BLUETOOTH); 1163 1164 if (result && result != -ENODEV) 1165 goto exit; 1166 1167 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax", 1168 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX); 1169 1170 if (result && result != -ENODEV) 1171 goto exit; 1172 1173 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g", 1174 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G); 1175 1176 if (result && result != -ENODEV) 1177 goto exit; 1178 1179 result = asus_new_rfkill(asus, &asus->gps, "asus-gps", 1180 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS); 1181 1182 if (result && result != -ENODEV) 1183 goto exit; 1184 1185 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb", 1186 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB); 1187 1188 if (result && result != -ENODEV) 1189 goto exit; 1190 1191 if (!asus->driver->quirks->hotplug_wireless) 1192 goto exit; 1193 1194 result = asus_setup_pci_hotplug(asus); 1195 /* 1196 * If we get -EBUSY then something else is handling the PCI hotplug - 1197 * don't fail in this case 1198 */ 1199 if (result == -EBUSY) 1200 result = 0; 1201 1202 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1203 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1204 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1205 /* 1206 * Refresh pci hotplug in case the rfkill state was changed during 1207 * setup. 1208 */ 1209 asus_rfkill_hotplug(asus); 1210 1211 exit: 1212 if (result && result != -ENODEV) 1213 asus_wmi_rfkill_exit(asus); 1214 1215 if (result == -ENODEV) 1216 result = 0; 1217 1218 return result; 1219 } 1220 1221 /* Quirks *********************************************************************/ 1222 1223 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus) 1224 { 1225 struct pci_dev *xhci_pdev; 1226 u32 orig_ports_available; 1227 u32 ports_available = asus->driver->quirks->xusb2pr; 1228 1229 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL, 1230 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI, 1231 NULL); 1232 1233 if (!xhci_pdev) 1234 return; 1235 1236 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1237 &orig_ports_available); 1238 1239 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1240 cpu_to_le32(ports_available)); 1241 1242 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n", 1243 orig_ports_available, ports_available); 1244 } 1245 1246 /* 1247 * Some devices dont support or have borcken get_als method 1248 * but still support set method. 1249 */ 1250 static void asus_wmi_set_als(void) 1251 { 1252 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL); 1253 } 1254 1255 /* Hwmon device ***************************************************************/ 1256 1257 static int asus_agfn_fan_speed_read(struct asus_wmi *asus, int fan, 1258 int *speed) 1259 { 1260 struct agfn_fan_args args = { 1261 .agfn.len = sizeof(args), 1262 .agfn.mfun = ASUS_FAN_MFUN, 1263 .agfn.sfun = ASUS_FAN_SFUN_READ, 1264 .fan = fan, 1265 .speed = 0, 1266 }; 1267 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1268 int status; 1269 1270 if (fan != 1) 1271 return -EINVAL; 1272 1273 status = asus_wmi_evaluate_method_agfn(input); 1274 1275 if (status || args.agfn.err) 1276 return -ENXIO; 1277 1278 if (speed) 1279 *speed = args.speed; 1280 1281 return 0; 1282 } 1283 1284 static int asus_agfn_fan_speed_write(struct asus_wmi *asus, int fan, 1285 int *speed) 1286 { 1287 struct agfn_fan_args args = { 1288 .agfn.len = sizeof(args), 1289 .agfn.mfun = ASUS_FAN_MFUN, 1290 .agfn.sfun = ASUS_FAN_SFUN_WRITE, 1291 .fan = fan, 1292 .speed = speed ? *speed : 0, 1293 }; 1294 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1295 int status; 1296 1297 /* 1: for setting 1st fan's speed 0: setting auto mode */ 1298 if (fan != 1 && fan != 0) 1299 return -EINVAL; 1300 1301 status = asus_wmi_evaluate_method_agfn(input); 1302 1303 if (status || args.agfn.err) 1304 return -ENXIO; 1305 1306 if (speed && fan == 1) 1307 asus->agfn_pwm = *speed; 1308 1309 return 0; 1310 } 1311 1312 /* 1313 * Check if we can read the speed of one fan. If true we assume we can also 1314 * control it. 1315 */ 1316 static bool asus_wmi_has_agfn_fan(struct asus_wmi *asus) 1317 { 1318 int status; 1319 int speed; 1320 u32 value; 1321 1322 status = asus_agfn_fan_speed_read(asus, 1, &speed); 1323 if (status != 0) 1324 return false; 1325 1326 status = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value); 1327 if (status != 0) 1328 return false; 1329 1330 /* 1331 * We need to find a better way, probably using sfun, 1332 * bits or spec ... 1333 * Currently we disable it if: 1334 * - ASUS_WMI_UNSUPPORTED_METHOD is returned 1335 * - reverved bits are non-zero 1336 * - sfun and presence bit are not set 1337 */ 1338 return !(value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000 1339 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT))); 1340 } 1341 1342 static int asus_fan_set_auto(struct asus_wmi *asus) 1343 { 1344 int status; 1345 u32 retval; 1346 1347 switch (asus->fan_type) { 1348 case FAN_TYPE_SPEC83: 1349 status = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL, 1350 0, &retval); 1351 if (status) 1352 return status; 1353 1354 if (retval != 1) 1355 return -EIO; 1356 break; 1357 1358 case FAN_TYPE_AGFN: 1359 status = asus_agfn_fan_speed_write(asus, 0, NULL); 1360 if (status) 1361 return -ENXIO; 1362 break; 1363 1364 default: 1365 return -ENXIO; 1366 } 1367 1368 1369 return 0; 1370 } 1371 1372 static ssize_t pwm1_show(struct device *dev, 1373 struct device_attribute *attr, 1374 char *buf) 1375 { 1376 struct asus_wmi *asus = dev_get_drvdata(dev); 1377 int err; 1378 int value; 1379 1380 /* If we already set a value then just return it */ 1381 if (asus->agfn_pwm >= 0) 1382 return sprintf(buf, "%d\n", asus->agfn_pwm); 1383 1384 /* 1385 * If we haven't set already set a value through the AGFN interface, 1386 * we read a current value through the (now-deprecated) FAN_CTRL device. 1387 */ 1388 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value); 1389 if (err < 0) 1390 return err; 1391 1392 value &= 0xFF; 1393 1394 if (value == 1) /* Low Speed */ 1395 value = 85; 1396 else if (value == 2) 1397 value = 170; 1398 else if (value == 3) 1399 value = 255; 1400 else if (value) { 1401 pr_err("Unknown fan speed %#x\n", value); 1402 value = -1; 1403 } 1404 1405 return sprintf(buf, "%d\n", value); 1406 } 1407 1408 static ssize_t pwm1_store(struct device *dev, 1409 struct device_attribute *attr, 1410 const char *buf, size_t count) { 1411 struct asus_wmi *asus = dev_get_drvdata(dev); 1412 int value; 1413 int state; 1414 int ret; 1415 1416 ret = kstrtouint(buf, 10, &value); 1417 if (ret) 1418 return ret; 1419 1420 value = clamp(value, 0, 255); 1421 1422 state = asus_agfn_fan_speed_write(asus, 1, &value); 1423 if (state) 1424 pr_warn("Setting fan speed failed: %d\n", state); 1425 else 1426 asus->fan_pwm_mode = ASUS_FAN_CTRL_MANUAL; 1427 1428 return count; 1429 } 1430 1431 static ssize_t fan1_input_show(struct device *dev, 1432 struct device_attribute *attr, 1433 char *buf) 1434 { 1435 struct asus_wmi *asus = dev_get_drvdata(dev); 1436 int value; 1437 int ret; 1438 1439 switch (asus->fan_type) { 1440 case FAN_TYPE_SPEC83: 1441 ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL, 1442 &value); 1443 if (ret < 0) 1444 return ret; 1445 1446 value &= 0xffff; 1447 break; 1448 1449 case FAN_TYPE_AGFN: 1450 /* no speed readable on manual mode */ 1451 if (asus->fan_pwm_mode == ASUS_FAN_CTRL_MANUAL) 1452 return -ENXIO; 1453 1454 ret = asus_agfn_fan_speed_read(asus, 1, &value); 1455 if (ret) { 1456 pr_warn("reading fan speed failed: %d\n", ret); 1457 return -ENXIO; 1458 } 1459 break; 1460 1461 default: 1462 return -ENXIO; 1463 } 1464 1465 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100); 1466 } 1467 1468 static ssize_t pwm1_enable_show(struct device *dev, 1469 struct device_attribute *attr, 1470 char *buf) 1471 { 1472 struct asus_wmi *asus = dev_get_drvdata(dev); 1473 1474 /* 1475 * Just read back the cached pwm mode. 1476 * 1477 * For the CPU_FAN device, the spec indicates that we should be 1478 * able to read the device status and consult bit 19 to see if we 1479 * are in Full On or Automatic mode. However, this does not work 1480 * in practice on X532FL at least (the bit is always 0) and there's 1481 * also nothing in the DSDT to indicate that this behaviour exists. 1482 */ 1483 return sprintf(buf, "%d\n", asus->fan_pwm_mode); 1484 } 1485 1486 static ssize_t pwm1_enable_store(struct device *dev, 1487 struct device_attribute *attr, 1488 const char *buf, size_t count) 1489 { 1490 struct asus_wmi *asus = dev_get_drvdata(dev); 1491 int status = 0; 1492 int state; 1493 int value; 1494 int ret; 1495 u32 retval; 1496 1497 ret = kstrtouint(buf, 10, &state); 1498 if (ret) 1499 return ret; 1500 1501 if (asus->fan_type == FAN_TYPE_SPEC83) { 1502 switch (state) { /* standard documented hwmon values */ 1503 case ASUS_FAN_CTRL_FULLSPEED: 1504 value = 1; 1505 break; 1506 case ASUS_FAN_CTRL_AUTO: 1507 value = 0; 1508 break; 1509 default: 1510 return -EINVAL; 1511 } 1512 1513 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL, 1514 value, &retval); 1515 if (ret) 1516 return ret; 1517 1518 if (retval != 1) 1519 return -EIO; 1520 } else if (asus->fan_type == FAN_TYPE_AGFN) { 1521 switch (state) { 1522 case ASUS_FAN_CTRL_MANUAL: 1523 break; 1524 1525 case ASUS_FAN_CTRL_AUTO: 1526 status = asus_fan_set_auto(asus); 1527 if (status) 1528 return status; 1529 break; 1530 1531 default: 1532 return -EINVAL; 1533 } 1534 } 1535 1536 asus->fan_pwm_mode = state; 1537 return count; 1538 } 1539 1540 static ssize_t fan1_label_show(struct device *dev, 1541 struct device_attribute *attr, 1542 char *buf) 1543 { 1544 return sprintf(buf, "%s\n", ASUS_FAN_DESC); 1545 } 1546 1547 static ssize_t asus_hwmon_temp1(struct device *dev, 1548 struct device_attribute *attr, 1549 char *buf) 1550 { 1551 struct asus_wmi *asus = dev_get_drvdata(dev); 1552 u32 value; 1553 int err; 1554 1555 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value); 1556 if (err < 0) 1557 return err; 1558 1559 return sprintf(buf, "%ld\n", 1560 deci_kelvin_to_millicelsius(value & 0xFFFF)); 1561 } 1562 1563 /* Fan1 */ 1564 static DEVICE_ATTR_RW(pwm1); 1565 static DEVICE_ATTR_RW(pwm1_enable); 1566 static DEVICE_ATTR_RO(fan1_input); 1567 static DEVICE_ATTR_RO(fan1_label); 1568 1569 /* Temperature */ 1570 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL); 1571 1572 static struct attribute *hwmon_attributes[] = { 1573 &dev_attr_pwm1.attr, 1574 &dev_attr_pwm1_enable.attr, 1575 &dev_attr_fan1_input.attr, 1576 &dev_attr_fan1_label.attr, 1577 1578 &dev_attr_temp1_input.attr, 1579 NULL 1580 }; 1581 1582 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj, 1583 struct attribute *attr, int idx) 1584 { 1585 struct device *dev = container_of(kobj, struct device, kobj); 1586 struct asus_wmi *asus = dev_get_drvdata(dev->parent); 1587 u32 value = ASUS_WMI_UNSUPPORTED_METHOD; 1588 1589 if (attr == &dev_attr_pwm1.attr) { 1590 if (asus->fan_type != FAN_TYPE_AGFN) 1591 return 0; 1592 } else if (attr == &dev_attr_fan1_input.attr 1593 || attr == &dev_attr_fan1_label.attr 1594 || attr == &dev_attr_pwm1_enable.attr) { 1595 if (asus->fan_type == FAN_TYPE_NONE) 1596 return 0; 1597 } else if (attr == &dev_attr_temp1_input.attr) { 1598 int err = asus_wmi_get_devstate(asus, 1599 ASUS_WMI_DEVID_THERMAL_CTRL, 1600 &value); 1601 1602 if (err < 0) 1603 return 0; /* can't return negative here */ 1604 1605 /* 1606 * If the temperature value in deci-Kelvin is near the absolute 1607 * zero temperature, something is clearly wrong 1608 */ 1609 if (value == 0 || value == 1) 1610 return 0; 1611 } 1612 1613 return attr->mode; 1614 } 1615 1616 static const struct attribute_group hwmon_attribute_group = { 1617 .is_visible = asus_hwmon_sysfs_is_visible, 1618 .attrs = hwmon_attributes 1619 }; 1620 __ATTRIBUTE_GROUPS(hwmon_attribute); 1621 1622 static int asus_wmi_hwmon_init(struct asus_wmi *asus) 1623 { 1624 struct device *dev = &asus->platform_device->dev; 1625 struct device *hwmon; 1626 1627 hwmon = devm_hwmon_device_register_with_groups(dev, "asus", asus, 1628 hwmon_attribute_groups); 1629 1630 if (IS_ERR(hwmon)) { 1631 pr_err("Could not register asus hwmon device\n"); 1632 return PTR_ERR(hwmon); 1633 } 1634 return 0; 1635 } 1636 1637 static int asus_wmi_fan_init(struct asus_wmi *asus) 1638 { 1639 asus->fan_type = FAN_TYPE_NONE; 1640 asus->agfn_pwm = -1; 1641 1642 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL)) 1643 asus->fan_type = FAN_TYPE_SPEC83; 1644 else if (asus_wmi_has_agfn_fan(asus)) 1645 asus->fan_type = FAN_TYPE_AGFN; 1646 1647 if (asus->fan_type == FAN_TYPE_NONE) 1648 return -ENODEV; 1649 1650 asus_fan_set_auto(asus); 1651 asus->fan_pwm_mode = ASUS_FAN_CTRL_AUTO; 1652 return 0; 1653 } 1654 1655 /* Fan mode *******************************************************************/ 1656 1657 static int fan_boost_mode_check_present(struct asus_wmi *asus) 1658 { 1659 u32 result; 1660 int err; 1661 1662 asus->fan_boost_mode_available = false; 1663 1664 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_BOOST_MODE, 1665 &result); 1666 if (err) { 1667 if (err == -ENODEV) 1668 return 0; 1669 else 1670 return err; 1671 } 1672 1673 if ((result & ASUS_WMI_DSTS_PRESENCE_BIT) && 1674 (result & ASUS_FAN_BOOST_MODES_MASK)) { 1675 asus->fan_boost_mode_available = true; 1676 asus->fan_boost_mode_mask = result & ASUS_FAN_BOOST_MODES_MASK; 1677 } 1678 1679 return 0; 1680 } 1681 1682 static int fan_boost_mode_write(struct asus_wmi *asus) 1683 { 1684 int err; 1685 u8 value; 1686 u32 retval; 1687 1688 value = asus->fan_boost_mode; 1689 1690 pr_info("Set fan boost mode: %u\n", value); 1691 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_FAN_BOOST_MODE, value, 1692 &retval); 1693 1694 sysfs_notify(&asus->platform_device->dev.kobj, NULL, 1695 "fan_boost_mode"); 1696 1697 if (err) { 1698 pr_warn("Failed to set fan boost mode: %d\n", err); 1699 return err; 1700 } 1701 1702 if (retval != 1) { 1703 pr_warn("Failed to set fan boost mode (retval): 0x%x\n", 1704 retval); 1705 return -EIO; 1706 } 1707 1708 return 0; 1709 } 1710 1711 static int fan_boost_mode_switch_next(struct asus_wmi *asus) 1712 { 1713 u8 mask = asus->fan_boost_mode_mask; 1714 1715 if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_NORMAL) { 1716 if (mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK) 1717 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_OVERBOOST; 1718 else if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK) 1719 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT; 1720 } else if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) { 1721 if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK) 1722 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT; 1723 else 1724 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL; 1725 } else { 1726 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL; 1727 } 1728 1729 return fan_boost_mode_write(asus); 1730 } 1731 1732 static ssize_t fan_boost_mode_show(struct device *dev, 1733 struct device_attribute *attr, char *buf) 1734 { 1735 struct asus_wmi *asus = dev_get_drvdata(dev); 1736 1737 return scnprintf(buf, PAGE_SIZE, "%d\n", asus->fan_boost_mode); 1738 } 1739 1740 static ssize_t fan_boost_mode_store(struct device *dev, 1741 struct device_attribute *attr, 1742 const char *buf, size_t count) 1743 { 1744 int result; 1745 u8 new_mode; 1746 struct asus_wmi *asus = dev_get_drvdata(dev); 1747 u8 mask = asus->fan_boost_mode_mask; 1748 1749 result = kstrtou8(buf, 10, &new_mode); 1750 if (result < 0) { 1751 pr_warn("Trying to store invalid value\n"); 1752 return result; 1753 } 1754 1755 if (new_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) { 1756 if (!(mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK)) 1757 return -EINVAL; 1758 } else if (new_mode == ASUS_FAN_BOOST_MODE_SILENT) { 1759 if (!(mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)) 1760 return -EINVAL; 1761 } else if (new_mode != ASUS_FAN_BOOST_MODE_NORMAL) { 1762 return -EINVAL; 1763 } 1764 1765 asus->fan_boost_mode = new_mode; 1766 fan_boost_mode_write(asus); 1767 1768 return count; 1769 } 1770 1771 // Fan boost mode: 0 - normal, 1 - overboost, 2 - silent 1772 static DEVICE_ATTR_RW(fan_boost_mode); 1773 1774 /* Throttle thermal policy ****************************************************/ 1775 1776 static int throttle_thermal_policy_check_present(struct asus_wmi *asus) 1777 { 1778 u32 result; 1779 int err; 1780 1781 asus->throttle_thermal_policy_available = false; 1782 1783 err = asus_wmi_get_devstate(asus, 1784 ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY, 1785 &result); 1786 if (err) { 1787 if (err == -ENODEV) 1788 return 0; 1789 return err; 1790 } 1791 1792 if (result & ASUS_WMI_DSTS_PRESENCE_BIT) 1793 asus->throttle_thermal_policy_available = true; 1794 1795 return 0; 1796 } 1797 1798 static int throttle_thermal_policy_write(struct asus_wmi *asus) 1799 { 1800 int err; 1801 u8 value; 1802 u32 retval; 1803 1804 value = asus->throttle_thermal_policy_mode; 1805 1806 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY, 1807 value, &retval); 1808 1809 sysfs_notify(&asus->platform_device->dev.kobj, NULL, 1810 "throttle_thermal_policy"); 1811 1812 if (err) { 1813 pr_warn("Failed to set throttle thermal policy: %d\n", err); 1814 return err; 1815 } 1816 1817 if (retval != 1) { 1818 pr_warn("Failed to set throttle thermal policy (retval): 0x%x\n", 1819 retval); 1820 return -EIO; 1821 } 1822 1823 return 0; 1824 } 1825 1826 static int throttle_thermal_policy_set_default(struct asus_wmi *asus) 1827 { 1828 if (!asus->throttle_thermal_policy_available) 1829 return 0; 1830 1831 asus->throttle_thermal_policy_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT; 1832 return throttle_thermal_policy_write(asus); 1833 } 1834 1835 static int throttle_thermal_policy_switch_next(struct asus_wmi *asus) 1836 { 1837 u8 new_mode = asus->throttle_thermal_policy_mode + 1; 1838 1839 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT) 1840 new_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT; 1841 1842 asus->throttle_thermal_policy_mode = new_mode; 1843 return throttle_thermal_policy_write(asus); 1844 } 1845 1846 static ssize_t throttle_thermal_policy_show(struct device *dev, 1847 struct device_attribute *attr, char *buf) 1848 { 1849 struct asus_wmi *asus = dev_get_drvdata(dev); 1850 u8 mode = asus->throttle_thermal_policy_mode; 1851 1852 return scnprintf(buf, PAGE_SIZE, "%d\n", mode); 1853 } 1854 1855 static ssize_t throttle_thermal_policy_store(struct device *dev, 1856 struct device_attribute *attr, 1857 const char *buf, size_t count) 1858 { 1859 int result; 1860 u8 new_mode; 1861 struct asus_wmi *asus = dev_get_drvdata(dev); 1862 1863 result = kstrtou8(buf, 10, &new_mode); 1864 if (result < 0) 1865 return result; 1866 1867 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT) 1868 return -EINVAL; 1869 1870 asus->throttle_thermal_policy_mode = new_mode; 1871 throttle_thermal_policy_write(asus); 1872 1873 return count; 1874 } 1875 1876 // Throttle thermal policy: 0 - default, 1 - overboost, 2 - silent 1877 static DEVICE_ATTR_RW(throttle_thermal_policy); 1878 1879 /* Backlight ******************************************************************/ 1880 1881 static int read_backlight_power(struct asus_wmi *asus) 1882 { 1883 int ret; 1884 1885 if (asus->driver->quirks->store_backlight_power) 1886 ret = !asus->driver->panel_power; 1887 else 1888 ret = asus_wmi_get_devstate_simple(asus, 1889 ASUS_WMI_DEVID_BACKLIGHT); 1890 1891 if (ret < 0) 1892 return ret; 1893 1894 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; 1895 } 1896 1897 static int read_brightness_max(struct asus_wmi *asus) 1898 { 1899 u32 retval; 1900 int err; 1901 1902 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1903 if (err < 0) 1904 return err; 1905 1906 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK; 1907 retval >>= 8; 1908 1909 if (!retval) 1910 return -ENODEV; 1911 1912 return retval; 1913 } 1914 1915 static int read_brightness(struct backlight_device *bd) 1916 { 1917 struct asus_wmi *asus = bl_get_data(bd); 1918 u32 retval; 1919 int err; 1920 1921 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1922 if (err < 0) 1923 return err; 1924 1925 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 1926 } 1927 1928 static u32 get_scalar_command(struct backlight_device *bd) 1929 { 1930 struct asus_wmi *asus = bl_get_data(bd); 1931 u32 ctrl_param = 0; 1932 1933 if ((asus->driver->brightness < bd->props.brightness) || 1934 bd->props.brightness == bd->props.max_brightness) 1935 ctrl_param = 0x00008001; 1936 else if ((asus->driver->brightness > bd->props.brightness) || 1937 bd->props.brightness == 0) 1938 ctrl_param = 0x00008000; 1939 1940 asus->driver->brightness = bd->props.brightness; 1941 1942 return ctrl_param; 1943 } 1944 1945 static int update_bl_status(struct backlight_device *bd) 1946 { 1947 struct asus_wmi *asus = bl_get_data(bd); 1948 u32 ctrl_param; 1949 int power, err = 0; 1950 1951 power = read_backlight_power(asus); 1952 if (power != -ENODEV && bd->props.power != power) { 1953 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK); 1954 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 1955 ctrl_param, NULL); 1956 if (asus->driver->quirks->store_backlight_power) 1957 asus->driver->panel_power = bd->props.power; 1958 1959 /* When using scalar brightness, updating the brightness 1960 * will mess with the backlight power */ 1961 if (asus->driver->quirks->scalar_panel_brightness) 1962 return err; 1963 } 1964 1965 if (asus->driver->quirks->scalar_panel_brightness) 1966 ctrl_param = get_scalar_command(bd); 1967 else 1968 ctrl_param = bd->props.brightness; 1969 1970 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS, 1971 ctrl_param, NULL); 1972 1973 return err; 1974 } 1975 1976 static const struct backlight_ops asus_wmi_bl_ops = { 1977 .get_brightness = read_brightness, 1978 .update_status = update_bl_status, 1979 }; 1980 1981 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code) 1982 { 1983 struct backlight_device *bd = asus->backlight_device; 1984 int old = bd->props.brightness; 1985 int new = old; 1986 1987 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1988 new = code - NOTIFY_BRNUP_MIN + 1; 1989 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 1990 new = code - NOTIFY_BRNDOWN_MIN; 1991 1992 bd->props.brightness = new; 1993 backlight_update_status(bd); 1994 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 1995 1996 return old; 1997 } 1998 1999 static int asus_wmi_backlight_init(struct asus_wmi *asus) 2000 { 2001 struct backlight_device *bd; 2002 struct backlight_properties props; 2003 int max; 2004 int power; 2005 2006 max = read_brightness_max(asus); 2007 if (max < 0) 2008 return max; 2009 2010 power = read_backlight_power(asus); 2011 if (power == -ENODEV) 2012 power = FB_BLANK_UNBLANK; 2013 else if (power < 0) 2014 return power; 2015 2016 memset(&props, 0, sizeof(struct backlight_properties)); 2017 props.type = BACKLIGHT_PLATFORM; 2018 props.max_brightness = max; 2019 bd = backlight_device_register(asus->driver->name, 2020 &asus->platform_device->dev, asus, 2021 &asus_wmi_bl_ops, &props); 2022 if (IS_ERR(bd)) { 2023 pr_err("Could not register backlight device\n"); 2024 return PTR_ERR(bd); 2025 } 2026 2027 asus->backlight_device = bd; 2028 2029 if (asus->driver->quirks->store_backlight_power) 2030 asus->driver->panel_power = power; 2031 2032 bd->props.brightness = read_brightness(bd); 2033 bd->props.power = power; 2034 backlight_update_status(bd); 2035 2036 asus->driver->brightness = bd->props.brightness; 2037 2038 return 0; 2039 } 2040 2041 static void asus_wmi_backlight_exit(struct asus_wmi *asus) 2042 { 2043 backlight_device_unregister(asus->backlight_device); 2044 2045 asus->backlight_device = NULL; 2046 } 2047 2048 static int is_display_toggle(int code) 2049 { 2050 /* display toggle keys */ 2051 if ((code >= 0x61 && code <= 0x67) || 2052 (code >= 0x8c && code <= 0x93) || 2053 (code >= 0xa0 && code <= 0xa7) || 2054 (code >= 0xd0 && code <= 0xd5)) 2055 return 1; 2056 2057 return 0; 2058 } 2059 2060 /* Fn-lock ********************************************************************/ 2061 2062 static bool asus_wmi_has_fnlock_key(struct asus_wmi *asus) 2063 { 2064 u32 result; 2065 2066 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FNLOCK, &result); 2067 2068 return (result & ASUS_WMI_DSTS_PRESENCE_BIT) && 2069 !(result & ASUS_WMI_FNLOCK_BIOS_DISABLED); 2070 } 2071 2072 static void asus_wmi_fnlock_update(struct asus_wmi *asus) 2073 { 2074 int mode = asus->fnlock_locked; 2075 2076 asus_wmi_set_devstate(ASUS_WMI_DEVID_FNLOCK, mode, NULL); 2077 } 2078 2079 /* WMI events *****************************************************************/ 2080 2081 static int asus_wmi_get_event_code(u32 value) 2082 { 2083 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 2084 union acpi_object *obj; 2085 acpi_status status; 2086 int code; 2087 2088 status = wmi_get_event_data(value, &response); 2089 if (ACPI_FAILURE(status)) { 2090 pr_warn("Failed to get WMI notify code: %s\n", 2091 acpi_format_exception(status)); 2092 return -EIO; 2093 } 2094 2095 obj = (union acpi_object *)response.pointer; 2096 2097 if (obj && obj->type == ACPI_TYPE_INTEGER) 2098 code = (int)(obj->integer.value & WMI_EVENT_MASK); 2099 else 2100 code = -EIO; 2101 2102 kfree(obj); 2103 return code; 2104 } 2105 2106 static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus) 2107 { 2108 unsigned int key_value = 1; 2109 bool autorelease = 1; 2110 int result, orig_code; 2111 2112 orig_code = code; 2113 2114 if (asus->driver->key_filter) { 2115 asus->driver->key_filter(asus->driver, &code, &key_value, 2116 &autorelease); 2117 if (code == ASUS_WMI_KEY_IGNORE) 2118 return; 2119 } 2120 2121 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 2122 code = ASUS_WMI_BRN_UP; 2123 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 2124 code = ASUS_WMI_BRN_DOWN; 2125 2126 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) { 2127 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 2128 asus_wmi_backlight_notify(asus, orig_code); 2129 return; 2130 } 2131 } 2132 2133 if (code == NOTIFY_KBD_BRTUP) { 2134 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1); 2135 return; 2136 } 2137 if (code == NOTIFY_KBD_BRTDWN) { 2138 kbd_led_set_by_kbd(asus, asus->kbd_led_wk - 1); 2139 return; 2140 } 2141 if (code == NOTIFY_KBD_BRTTOGGLE) { 2142 if (asus->kbd_led_wk == asus->kbd_led.max_brightness) 2143 kbd_led_set_by_kbd(asus, 0); 2144 else 2145 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1); 2146 return; 2147 } 2148 2149 if (code == NOTIFY_FNLOCK_TOGGLE) { 2150 asus->fnlock_locked = !asus->fnlock_locked; 2151 asus_wmi_fnlock_update(asus); 2152 return; 2153 } 2154 2155 if (asus->driver->quirks->use_kbd_dock_devid && code == NOTIFY_KBD_DOCK_CHANGE) { 2156 result = asus_wmi_get_devstate_simple(asus, 2157 ASUS_WMI_DEVID_KBD_DOCK); 2158 if (result >= 0) { 2159 input_report_switch(asus->inputdev, SW_TABLET_MODE, 2160 !result); 2161 input_sync(asus->inputdev); 2162 } 2163 return; 2164 } 2165 2166 if (asus->driver->quirks->use_lid_flip_devid && code == NOTIFY_LID_FLIP) { 2167 lid_flip_tablet_mode_get_state(asus); 2168 return; 2169 } 2170 2171 if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) { 2172 fan_boost_mode_switch_next(asus); 2173 return; 2174 } 2175 2176 if (asus->throttle_thermal_policy_available && code == NOTIFY_KBD_TTP) { 2177 throttle_thermal_policy_switch_next(asus); 2178 return; 2179 } 2180 2181 if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle) 2182 return; 2183 2184 if (!sparse_keymap_report_event(asus->inputdev, code, 2185 key_value, autorelease)) 2186 pr_info("Unknown key %x pressed\n", code); 2187 } 2188 2189 static void asus_wmi_notify(u32 value, void *context) 2190 { 2191 struct asus_wmi *asus = context; 2192 int code; 2193 int i; 2194 2195 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) { 2196 code = asus_wmi_get_event_code(value); 2197 if (code < 0) { 2198 pr_warn("Failed to get notify code: %d\n", code); 2199 return; 2200 } 2201 2202 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK) 2203 return; 2204 2205 asus_wmi_handle_event_code(code, asus); 2206 2207 /* 2208 * Double check that queue is present: 2209 * ATK (with queue) uses 0xff, ASUSWMI (without) 0xd2. 2210 */ 2211 if (!asus->wmi_event_queue || value != WMI_EVENT_VALUE_ATK) 2212 return; 2213 } 2214 2215 pr_warn("Failed to process event queue, last code: 0x%x\n", code); 2216 } 2217 2218 static int asus_wmi_notify_queue_flush(struct asus_wmi *asus) 2219 { 2220 int code; 2221 int i; 2222 2223 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) { 2224 code = asus_wmi_get_event_code(WMI_EVENT_VALUE_ATK); 2225 if (code < 0) { 2226 pr_warn("Failed to get event during flush: %d\n", code); 2227 return code; 2228 } 2229 2230 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK) 2231 return 0; 2232 } 2233 2234 pr_warn("Failed to flush event queue\n"); 2235 return -EIO; 2236 } 2237 2238 /* Sysfs **********************************************************************/ 2239 2240 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid, 2241 const char *buf, size_t count) 2242 { 2243 u32 retval; 2244 int err, value; 2245 2246 value = asus_wmi_get_devstate_simple(asus, devid); 2247 if (value < 0) 2248 return value; 2249 2250 err = kstrtoint(buf, 0, &value); 2251 if (err) 2252 return err; 2253 2254 err = asus_wmi_set_devstate(devid, value, &retval); 2255 if (err < 0) 2256 return err; 2257 2258 return count; 2259 } 2260 2261 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf) 2262 { 2263 int value = asus_wmi_get_devstate_simple(asus, devid); 2264 2265 if (value < 0) 2266 return value; 2267 2268 return sprintf(buf, "%d\n", value); 2269 } 2270 2271 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ 2272 static ssize_t show_##_name(struct device *dev, \ 2273 struct device_attribute *attr, \ 2274 char *buf) \ 2275 { \ 2276 struct asus_wmi *asus = dev_get_drvdata(dev); \ 2277 \ 2278 return show_sys_wmi(asus, _cm, buf); \ 2279 } \ 2280 static ssize_t store_##_name(struct device *dev, \ 2281 struct device_attribute *attr, \ 2282 const char *buf, size_t count) \ 2283 { \ 2284 struct asus_wmi *asus = dev_get_drvdata(dev); \ 2285 \ 2286 return store_sys_wmi(asus, _cm, buf, count); \ 2287 } \ 2288 static struct device_attribute dev_attr_##_name = { \ 2289 .attr = { \ 2290 .name = __stringify(_name), \ 2291 .mode = _mode }, \ 2292 .show = show_##_name, \ 2293 .store = store_##_name, \ 2294 } 2295 2296 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD); 2297 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA); 2298 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER); 2299 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME); 2300 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE); 2301 2302 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr, 2303 const char *buf, size_t count) 2304 { 2305 int value, rv; 2306 2307 rv = kstrtoint(buf, 0, &value); 2308 if (rv) 2309 return rv; 2310 2311 if (value < 0 || value > 2) 2312 return -EINVAL; 2313 2314 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL); 2315 if (rv < 0) 2316 return rv; 2317 2318 return count; 2319 } 2320 2321 static DEVICE_ATTR_WO(cpufv); 2322 2323 static struct attribute *platform_attributes[] = { 2324 &dev_attr_cpufv.attr, 2325 &dev_attr_camera.attr, 2326 &dev_attr_cardr.attr, 2327 &dev_attr_touchpad.attr, 2328 &dev_attr_lid_resume.attr, 2329 &dev_attr_als_enable.attr, 2330 &dev_attr_fan_boost_mode.attr, 2331 &dev_attr_throttle_thermal_policy.attr, 2332 NULL 2333 }; 2334 2335 static umode_t asus_sysfs_is_visible(struct kobject *kobj, 2336 struct attribute *attr, int idx) 2337 { 2338 struct device *dev = container_of(kobj, struct device, kobj); 2339 struct asus_wmi *asus = dev_get_drvdata(dev); 2340 bool ok = true; 2341 int devid = -1; 2342 2343 if (attr == &dev_attr_camera.attr) 2344 devid = ASUS_WMI_DEVID_CAMERA; 2345 else if (attr == &dev_attr_cardr.attr) 2346 devid = ASUS_WMI_DEVID_CARDREADER; 2347 else if (attr == &dev_attr_touchpad.attr) 2348 devid = ASUS_WMI_DEVID_TOUCHPAD; 2349 else if (attr == &dev_attr_lid_resume.attr) 2350 devid = ASUS_WMI_DEVID_LID_RESUME; 2351 else if (attr == &dev_attr_als_enable.attr) 2352 devid = ASUS_WMI_DEVID_ALS_ENABLE; 2353 else if (attr == &dev_attr_fan_boost_mode.attr) 2354 ok = asus->fan_boost_mode_available; 2355 else if (attr == &dev_attr_throttle_thermal_policy.attr) 2356 ok = asus->throttle_thermal_policy_available; 2357 2358 if (devid != -1) 2359 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0); 2360 2361 return ok ? attr->mode : 0; 2362 } 2363 2364 static const struct attribute_group platform_attribute_group = { 2365 .is_visible = asus_sysfs_is_visible, 2366 .attrs = platform_attributes 2367 }; 2368 2369 static void asus_wmi_sysfs_exit(struct platform_device *device) 2370 { 2371 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); 2372 } 2373 2374 static int asus_wmi_sysfs_init(struct platform_device *device) 2375 { 2376 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); 2377 } 2378 2379 /* Platform device ************************************************************/ 2380 2381 static int asus_wmi_platform_init(struct asus_wmi *asus) 2382 { 2383 struct device *dev = &asus->platform_device->dev; 2384 char *wmi_uid; 2385 int rv; 2386 2387 /* INIT enable hotkeys on some models */ 2388 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv)) 2389 pr_info("Initialization: %#x\n", rv); 2390 2391 /* We don't know yet what to do with this version... */ 2392 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) { 2393 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF); 2394 asus->spec = rv; 2395 } 2396 2397 /* 2398 * The SFUN method probably allows the original driver to get the list 2399 * of features supported by a given model. For now, 0x0100 or 0x0800 2400 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 2401 * The significance of others is yet to be found. 2402 */ 2403 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) { 2404 pr_info("SFUN value: %#x\n", rv); 2405 asus->sfun = rv; 2406 } 2407 2408 /* 2409 * Eee PC and Notebooks seems to have different method_id for DSTS, 2410 * but it may also be related to the BIOS's SPEC. 2411 * Note, on most Eeepc, there is no way to check if a method exist 2412 * or note, while on notebooks, they returns 0xFFFFFFFE on failure, 2413 * but once again, SPEC may probably be used for that kind of things. 2414 * 2415 * Additionally at least TUF Gaming series laptops return nothing for 2416 * unknown methods, so the detection in this way is not possible. 2417 * 2418 * There is strong indication that only ACPI WMI devices that have _UID 2419 * equal to "ASUSWMI" use DCTS whereas those with "ATK" use DSTS. 2420 */ 2421 wmi_uid = wmi_get_acpi_device_uid(ASUS_WMI_MGMT_GUID); 2422 if (!wmi_uid) 2423 return -ENODEV; 2424 2425 if (!strcmp(wmi_uid, ASUS_ACPI_UID_ASUSWMI)) { 2426 dev_info(dev, "Detected ASUSWMI, use DCTS\n"); 2427 asus->dsts_id = ASUS_WMI_METHODID_DCTS; 2428 } else { 2429 dev_info(dev, "Detected %s, not ASUSWMI, use DSTS\n", wmi_uid); 2430 asus->dsts_id = ASUS_WMI_METHODID_DSTS; 2431 } 2432 2433 /* 2434 * Some devices can have multiple event codes stored in a queue before 2435 * the module load if it was unloaded intermittently after calling 2436 * the INIT method (enables event handling). The WMI notify handler is 2437 * expected to retrieve all event codes until a retrieved code equals 2438 * queue end marker (One or Ones). Old codes are flushed from the queue 2439 * upon module load. Not enabling this when it should be has minimal 2440 * visible impact so fall back if anything goes wrong. 2441 */ 2442 wmi_uid = wmi_get_acpi_device_uid(asus->driver->event_guid); 2443 if (wmi_uid && !strcmp(wmi_uid, ASUS_ACPI_UID_ATK)) { 2444 dev_info(dev, "Detected ATK, enable event queue\n"); 2445 2446 if (!asus_wmi_notify_queue_flush(asus)) 2447 asus->wmi_event_queue = true; 2448 } 2449 2450 /* CWAP allow to define the behavior of the Fn+F2 key, 2451 * this method doesn't seems to be present on Eee PCs */ 2452 if (asus->driver->quirks->wapf >= 0) 2453 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP, 2454 asus->driver->quirks->wapf, NULL); 2455 2456 return 0; 2457 } 2458 2459 /* debugfs ********************************************************************/ 2460 2461 struct asus_wmi_debugfs_node { 2462 struct asus_wmi *asus; 2463 char *name; 2464 int (*show) (struct seq_file *m, void *data); 2465 }; 2466 2467 static int show_dsts(struct seq_file *m, void *data) 2468 { 2469 struct asus_wmi *asus = m->private; 2470 int err; 2471 u32 retval = -1; 2472 2473 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval); 2474 if (err < 0) 2475 return err; 2476 2477 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval); 2478 2479 return 0; 2480 } 2481 2482 static int show_devs(struct seq_file *m, void *data) 2483 { 2484 struct asus_wmi *asus = m->private; 2485 int err; 2486 u32 retval = -1; 2487 2488 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param, 2489 &retval); 2490 if (err < 0) 2491 return err; 2492 2493 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id, 2494 asus->debug.ctrl_param, retval); 2495 2496 return 0; 2497 } 2498 2499 static int show_call(struct seq_file *m, void *data) 2500 { 2501 struct asus_wmi *asus = m->private; 2502 struct bios_args args = { 2503 .arg0 = asus->debug.dev_id, 2504 .arg1 = asus->debug.ctrl_param, 2505 }; 2506 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 2507 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 2508 union acpi_object *obj; 2509 acpi_status status; 2510 2511 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 2512 0, asus->debug.method_id, 2513 &input, &output); 2514 2515 if (ACPI_FAILURE(status)) 2516 return -EIO; 2517 2518 obj = (union acpi_object *)output.pointer; 2519 if (obj && obj->type == ACPI_TYPE_INTEGER) 2520 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id, 2521 asus->debug.dev_id, asus->debug.ctrl_param, 2522 (u32) obj->integer.value); 2523 else 2524 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id, 2525 asus->debug.dev_id, asus->debug.ctrl_param, 2526 obj ? obj->type : -1); 2527 2528 kfree(obj); 2529 2530 return 0; 2531 } 2532 2533 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = { 2534 {NULL, "devs", show_devs}, 2535 {NULL, "dsts", show_dsts}, 2536 {NULL, "call", show_call}, 2537 }; 2538 2539 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file) 2540 { 2541 struct asus_wmi_debugfs_node *node = inode->i_private; 2542 2543 return single_open(file, node->show, node->asus); 2544 } 2545 2546 static const struct file_operations asus_wmi_debugfs_io_ops = { 2547 .owner = THIS_MODULE, 2548 .open = asus_wmi_debugfs_open, 2549 .read = seq_read, 2550 .llseek = seq_lseek, 2551 .release = single_release, 2552 }; 2553 2554 static void asus_wmi_debugfs_exit(struct asus_wmi *asus) 2555 { 2556 debugfs_remove_recursive(asus->debug.root); 2557 } 2558 2559 static void asus_wmi_debugfs_init(struct asus_wmi *asus) 2560 { 2561 int i; 2562 2563 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL); 2564 2565 debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, asus->debug.root, 2566 &asus->debug.method_id); 2567 2568 debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, asus->debug.root, 2569 &asus->debug.dev_id); 2570 2571 debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, asus->debug.root, 2572 &asus->debug.ctrl_param); 2573 2574 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) { 2575 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i]; 2576 2577 node->asus = asus; 2578 debugfs_create_file(node->name, S_IFREG | S_IRUGO, 2579 asus->debug.root, node, 2580 &asus_wmi_debugfs_io_ops); 2581 } 2582 } 2583 2584 /* Init / exit ****************************************************************/ 2585 2586 static int asus_wmi_add(struct platform_device *pdev) 2587 { 2588 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2589 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2590 struct asus_wmi *asus; 2591 const char *chassis_type; 2592 acpi_status status; 2593 int err; 2594 u32 result; 2595 2596 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL); 2597 if (!asus) 2598 return -ENOMEM; 2599 2600 asus->driver = wdrv; 2601 asus->platform_device = pdev; 2602 wdrv->platform_device = pdev; 2603 platform_set_drvdata(asus->platform_device, asus); 2604 2605 if (wdrv->detect_quirks) 2606 wdrv->detect_quirks(asus->driver); 2607 2608 err = asus_wmi_platform_init(asus); 2609 if (err) 2610 goto fail_platform; 2611 2612 err = fan_boost_mode_check_present(asus); 2613 if (err) 2614 goto fail_fan_boost_mode; 2615 2616 err = throttle_thermal_policy_check_present(asus); 2617 if (err) 2618 goto fail_throttle_thermal_policy; 2619 else 2620 throttle_thermal_policy_set_default(asus); 2621 2622 err = asus_wmi_sysfs_init(asus->platform_device); 2623 if (err) 2624 goto fail_sysfs; 2625 2626 err = asus_wmi_input_init(asus); 2627 if (err) 2628 goto fail_input; 2629 2630 err = asus_wmi_fan_init(asus); /* probably no problems on error */ 2631 2632 err = asus_wmi_hwmon_init(asus); 2633 if (err) 2634 goto fail_hwmon; 2635 2636 err = asus_wmi_led_init(asus); 2637 if (err) 2638 goto fail_leds; 2639 2640 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result); 2641 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT)) 2642 asus->driver->wlan_ctrl_by_user = 1; 2643 2644 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) { 2645 err = asus_wmi_rfkill_init(asus); 2646 if (err) 2647 goto fail_rfkill; 2648 } 2649 2650 if (asus->driver->quirks->wmi_force_als_set) 2651 asus_wmi_set_als(); 2652 2653 /* Some Asus desktop boards export an acpi-video backlight interface, 2654 stop this from showing up */ 2655 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); 2656 if (chassis_type && !strcmp(chassis_type, "3")) 2657 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2658 2659 if (asus->driver->quirks->wmi_backlight_power) 2660 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2661 2662 if (asus->driver->quirks->wmi_backlight_native) 2663 acpi_video_set_dmi_backlight_type(acpi_backlight_native); 2664 2665 if (asus->driver->quirks->xusb2pr) 2666 asus_wmi_set_xusb2pr(asus); 2667 2668 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 2669 err = asus_wmi_backlight_init(asus); 2670 if (err && err != -ENODEV) 2671 goto fail_backlight; 2672 } else if (asus->driver->quirks->wmi_backlight_set_devstate) 2673 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL); 2674 2675 if (asus_wmi_has_fnlock_key(asus)) { 2676 asus->fnlock_locked = true; 2677 asus_wmi_fnlock_update(asus); 2678 } 2679 2680 status = wmi_install_notify_handler(asus->driver->event_guid, 2681 asus_wmi_notify, asus); 2682 if (ACPI_FAILURE(status)) { 2683 pr_err("Unable to register notify handler - %d\n", status); 2684 err = -ENODEV; 2685 goto fail_wmi_handler; 2686 } 2687 2688 asus_wmi_battery_init(asus); 2689 2690 asus_wmi_debugfs_init(asus); 2691 2692 return 0; 2693 2694 fail_wmi_handler: 2695 asus_wmi_backlight_exit(asus); 2696 fail_backlight: 2697 asus_wmi_rfkill_exit(asus); 2698 fail_rfkill: 2699 asus_wmi_led_exit(asus); 2700 fail_leds: 2701 fail_hwmon: 2702 asus_wmi_input_exit(asus); 2703 fail_input: 2704 asus_wmi_sysfs_exit(asus->platform_device); 2705 fail_sysfs: 2706 fail_throttle_thermal_policy: 2707 fail_fan_boost_mode: 2708 fail_platform: 2709 kfree(asus); 2710 return err; 2711 } 2712 2713 static int asus_wmi_remove(struct platform_device *device) 2714 { 2715 struct asus_wmi *asus; 2716 2717 asus = platform_get_drvdata(device); 2718 wmi_remove_notify_handler(asus->driver->event_guid); 2719 asus_wmi_backlight_exit(asus); 2720 asus_wmi_input_exit(asus); 2721 asus_wmi_led_exit(asus); 2722 asus_wmi_rfkill_exit(asus); 2723 asus_wmi_debugfs_exit(asus); 2724 asus_wmi_sysfs_exit(asus->platform_device); 2725 asus_fan_set_auto(asus); 2726 asus_wmi_battery_exit(asus); 2727 2728 kfree(asus); 2729 return 0; 2730 } 2731 2732 /* Platform driver - hibernate/resume callbacks *******************************/ 2733 2734 static int asus_hotk_thaw(struct device *device) 2735 { 2736 struct asus_wmi *asus = dev_get_drvdata(device); 2737 2738 if (asus->wlan.rfkill) { 2739 bool wlan; 2740 2741 /* 2742 * Work around bios bug - acpi _PTS turns off the wireless led 2743 * during suspend. Normally it restores it on resume, but 2744 * we should kick it ourselves in case hibernation is aborted. 2745 */ 2746 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 2747 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL); 2748 } 2749 2750 return 0; 2751 } 2752 2753 static int asus_hotk_resume(struct device *device) 2754 { 2755 struct asus_wmi *asus = dev_get_drvdata(device); 2756 2757 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2758 kbd_led_update(asus); 2759 2760 if (asus_wmi_has_fnlock_key(asus)) 2761 asus_wmi_fnlock_update(asus); 2762 2763 if (asus->driver->quirks->use_lid_flip_devid) 2764 lid_flip_tablet_mode_get_state(asus); 2765 2766 return 0; 2767 } 2768 2769 static int asus_hotk_restore(struct device *device) 2770 { 2771 struct asus_wmi *asus = dev_get_drvdata(device); 2772 int bl; 2773 2774 /* Refresh both wlan rfkill state and pci hotplug */ 2775 if (asus->wlan.rfkill) 2776 asus_rfkill_hotplug(asus); 2777 2778 if (asus->bluetooth.rfkill) { 2779 bl = !asus_wmi_get_devstate_simple(asus, 2780 ASUS_WMI_DEVID_BLUETOOTH); 2781 rfkill_set_sw_state(asus->bluetooth.rfkill, bl); 2782 } 2783 if (asus->wimax.rfkill) { 2784 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX); 2785 rfkill_set_sw_state(asus->wimax.rfkill, bl); 2786 } 2787 if (asus->wwan3g.rfkill) { 2788 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G); 2789 rfkill_set_sw_state(asus->wwan3g.rfkill, bl); 2790 } 2791 if (asus->gps.rfkill) { 2792 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS); 2793 rfkill_set_sw_state(asus->gps.rfkill, bl); 2794 } 2795 if (asus->uwb.rfkill) { 2796 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB); 2797 rfkill_set_sw_state(asus->uwb.rfkill, bl); 2798 } 2799 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2800 kbd_led_update(asus); 2801 2802 if (asus_wmi_has_fnlock_key(asus)) 2803 asus_wmi_fnlock_update(asus); 2804 2805 if (asus->driver->quirks->use_lid_flip_devid) 2806 lid_flip_tablet_mode_get_state(asus); 2807 2808 return 0; 2809 } 2810 2811 static const struct dev_pm_ops asus_pm_ops = { 2812 .thaw = asus_hotk_thaw, 2813 .restore = asus_hotk_restore, 2814 .resume = asus_hotk_resume, 2815 }; 2816 2817 /* Registration ***************************************************************/ 2818 2819 static int asus_wmi_probe(struct platform_device *pdev) 2820 { 2821 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2822 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2823 int ret; 2824 2825 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 2826 pr_warn("ASUS Management GUID not found\n"); 2827 return -ENODEV; 2828 } 2829 2830 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) { 2831 pr_warn("ASUS Event GUID not found\n"); 2832 return -ENODEV; 2833 } 2834 2835 if (wdrv->probe) { 2836 ret = wdrv->probe(pdev); 2837 if (ret) 2838 return ret; 2839 } 2840 2841 return asus_wmi_add(pdev); 2842 } 2843 2844 static bool used; 2845 2846 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver) 2847 { 2848 struct platform_driver *platform_driver; 2849 struct platform_device *platform_device; 2850 2851 if (used) 2852 return -EBUSY; 2853 2854 platform_driver = &driver->platform_driver; 2855 platform_driver->remove = asus_wmi_remove; 2856 platform_driver->driver.owner = driver->owner; 2857 platform_driver->driver.name = driver->name; 2858 platform_driver->driver.pm = &asus_pm_ops; 2859 2860 platform_device = platform_create_bundle(platform_driver, 2861 asus_wmi_probe, 2862 NULL, 0, NULL, 0); 2863 if (IS_ERR(platform_device)) 2864 return PTR_ERR(platform_device); 2865 2866 used = true; 2867 return 0; 2868 } 2869 EXPORT_SYMBOL_GPL(asus_wmi_register_driver); 2870 2871 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver) 2872 { 2873 platform_device_unregister(driver->platform_device); 2874 platform_driver_unregister(&driver->platform_driver); 2875 used = false; 2876 } 2877 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver); 2878 2879 static int __init asus_wmi_init(void) 2880 { 2881 pr_info("ASUS WMI generic driver loaded\n"); 2882 return 0; 2883 } 2884 2885 static void __exit asus_wmi_exit(void) 2886 { 2887 pr_info("ASUS WMI generic driver unloaded\n"); 2888 } 2889 2890 module_init(asus_wmi_init); 2891 module_exit(asus_wmi_exit); 2892