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 static bool fnlock_default = true; 51 module_param(fnlock_default, bool, 0444); 52 53 #define to_asus_wmi_driver(pdrv) \ 54 (container_of((pdrv), struct asus_wmi_driver, platform_driver)) 55 56 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66" 57 58 #define NOTIFY_BRNUP_MIN 0x11 59 #define NOTIFY_BRNUP_MAX 0x1f 60 #define NOTIFY_BRNDOWN_MIN 0x20 61 #define NOTIFY_BRNDOWN_MAX 0x2e 62 #define NOTIFY_FNLOCK_TOGGLE 0x4e 63 #define NOTIFY_KBD_DOCK_CHANGE 0x75 64 #define NOTIFY_KBD_BRTUP 0xc4 65 #define NOTIFY_KBD_BRTDWN 0xc5 66 #define NOTIFY_KBD_BRTTOGGLE 0xc7 67 #define NOTIFY_KBD_FBM 0x99 68 #define NOTIFY_KBD_TTP 0xae 69 #define NOTIFY_LID_FLIP 0xfa 70 71 #define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0) 72 73 #define ASUS_FAN_DESC "cpu_fan" 74 #define ASUS_FAN_MFUN 0x13 75 #define ASUS_FAN_SFUN_READ 0x06 76 #define ASUS_FAN_SFUN_WRITE 0x07 77 78 /* Based on standard hwmon pwmX_enable values */ 79 #define ASUS_FAN_CTRL_FULLSPEED 0 80 #define ASUS_FAN_CTRL_MANUAL 1 81 #define ASUS_FAN_CTRL_AUTO 2 82 83 #define ASUS_FAN_BOOST_MODE_NORMAL 0 84 #define ASUS_FAN_BOOST_MODE_OVERBOOST 1 85 #define ASUS_FAN_BOOST_MODE_OVERBOOST_MASK 0x01 86 #define ASUS_FAN_BOOST_MODE_SILENT 2 87 #define ASUS_FAN_BOOST_MODE_SILENT_MASK 0x02 88 #define ASUS_FAN_BOOST_MODES_MASK 0x03 89 90 #define ASUS_THROTTLE_THERMAL_POLICY_DEFAULT 0 91 #define ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST 1 92 #define ASUS_THROTTLE_THERMAL_POLICY_SILENT 2 93 94 #define USB_INTEL_XUSB2PR 0xD0 95 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31 96 97 #define ASUS_ACPI_UID_ASUSWMI "ASUSWMI" 98 #define ASUS_ACPI_UID_ATK "ATK" 99 100 #define WMI_EVENT_QUEUE_SIZE 0x10 101 #define WMI_EVENT_QUEUE_END 0x1 102 #define WMI_EVENT_MASK 0xFFFF 103 /* The WMI hotkey event value is always the same. */ 104 #define WMI_EVENT_VALUE_ATK 0xFF 105 106 #define WMI_EVENT_MASK 0xFFFF 107 108 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL }; 109 110 static bool ashs_present(void) 111 { 112 int i = 0; 113 while (ashs_ids[i]) { 114 if (acpi_dev_found(ashs_ids[i++])) 115 return true; 116 } 117 return false; 118 } 119 120 struct bios_args { 121 u32 arg0; 122 u32 arg1; 123 u32 arg2; /* At least TUF Gaming series uses 3 dword input buffer. */ 124 u32 arg4; 125 u32 arg5; 126 } __packed; 127 128 /* 129 * Struct that's used for all methods called via AGFN. Naming is 130 * identically to the AML code. 131 */ 132 struct agfn_args { 133 u16 mfun; /* probably "Multi-function" to be called */ 134 u16 sfun; /* probably "Sub-function" to be called */ 135 u16 len; /* size of the hole struct, including subfunction fields */ 136 u8 stas; /* not used by now */ 137 u8 err; /* zero on success */ 138 } __packed; 139 140 /* struct used for calling fan read and write methods */ 141 struct agfn_fan_args { 142 struct agfn_args agfn; /* common fields */ 143 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */ 144 u32 speed; /* read: RPM/100 - write: 0-255 */ 145 } __packed; 146 147 /* 148 * <platform>/ - debugfs root directory 149 * dev_id - current dev_id 150 * ctrl_param - current ctrl_param 151 * method_id - current method_id 152 * devs - call DEVS(dev_id, ctrl_param) and print result 153 * dsts - call DSTS(dev_id) and print result 154 * call - call method_id(dev_id, ctrl_param) and print result 155 */ 156 struct asus_wmi_debug { 157 struct dentry *root; 158 u32 method_id; 159 u32 dev_id; 160 u32 ctrl_param; 161 }; 162 163 struct asus_rfkill { 164 struct asus_wmi *asus; 165 struct rfkill *rfkill; 166 u32 dev_id; 167 }; 168 169 enum fan_type { 170 FAN_TYPE_NONE = 0, 171 FAN_TYPE_AGFN, /* deprecated on newer platforms */ 172 FAN_TYPE_SPEC83, /* starting in Spec 8.3, use CPU_FAN_CTRL */ 173 }; 174 175 struct asus_wmi { 176 int dsts_id; 177 int spec; 178 int sfun; 179 bool wmi_event_queue; 180 181 struct input_dev *inputdev; 182 struct backlight_device *backlight_device; 183 struct platform_device *platform_device; 184 185 struct led_classdev wlan_led; 186 int wlan_led_wk; 187 struct led_classdev tpd_led; 188 int tpd_led_wk; 189 struct led_classdev kbd_led; 190 int kbd_led_wk; 191 struct led_classdev lightbar_led; 192 int lightbar_led_wk; 193 struct workqueue_struct *led_workqueue; 194 struct work_struct tpd_led_work; 195 struct work_struct wlan_led_work; 196 struct work_struct lightbar_led_work; 197 198 struct asus_rfkill wlan; 199 struct asus_rfkill bluetooth; 200 struct asus_rfkill wimax; 201 struct asus_rfkill wwan3g; 202 struct asus_rfkill gps; 203 struct asus_rfkill uwb; 204 205 enum fan_type fan_type; 206 int fan_pwm_mode; 207 int agfn_pwm; 208 209 bool fan_boost_mode_available; 210 u8 fan_boost_mode_mask; 211 u8 fan_boost_mode; 212 213 bool throttle_thermal_policy_available; 214 u8 throttle_thermal_policy_mode; 215 216 // The RSOC controls the maximum charging percentage. 217 bool battery_rsoc_available; 218 219 struct hotplug_slot hotplug_slot; 220 struct mutex hotplug_lock; 221 struct mutex wmi_lock; 222 struct workqueue_struct *hotplug_workqueue; 223 struct work_struct hotplug_work; 224 225 bool fnlock_locked; 226 227 struct asus_wmi_debug debug; 228 229 struct asus_wmi_driver *driver; 230 }; 231 232 /* WMI ************************************************************************/ 233 234 static int asus_wmi_evaluate_method3(u32 method_id, 235 u32 arg0, u32 arg1, u32 arg2, u32 *retval) 236 { 237 struct bios_args args = { 238 .arg0 = arg0, 239 .arg1 = arg1, 240 .arg2 = arg2, 241 }; 242 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 243 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 244 acpi_status status; 245 union acpi_object *obj; 246 u32 tmp = 0; 247 248 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id, 249 &input, &output); 250 251 if (ACPI_FAILURE(status)) 252 return -EIO; 253 254 obj = (union acpi_object *)output.pointer; 255 if (obj && obj->type == ACPI_TYPE_INTEGER) 256 tmp = (u32) obj->integer.value; 257 258 if (retval) 259 *retval = tmp; 260 261 kfree(obj); 262 263 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD) 264 return -ENODEV; 265 266 return 0; 267 } 268 269 int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval) 270 { 271 return asus_wmi_evaluate_method3(method_id, arg0, arg1, 0, retval); 272 } 273 EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method); 274 275 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args) 276 { 277 struct acpi_buffer input; 278 u64 phys_addr; 279 u32 retval; 280 u32 status; 281 282 /* 283 * Copy to dma capable address otherwise memory corruption occurs as 284 * bios has to be able to access it. 285 */ 286 input.pointer = kmemdup(args.pointer, args.length, GFP_DMA | GFP_KERNEL); 287 input.length = args.length; 288 if (!input.pointer) 289 return -ENOMEM; 290 phys_addr = virt_to_phys(input.pointer); 291 292 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN, 293 phys_addr, 0, &retval); 294 if (!status) 295 memcpy(args.pointer, input.pointer, args.length); 296 297 kfree(input.pointer); 298 if (status) 299 return -ENXIO; 300 301 return retval; 302 } 303 304 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval) 305 { 306 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval); 307 } 308 309 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, 310 u32 *retval) 311 { 312 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id, 313 ctrl_param, retval); 314 } 315 316 /* Helper for special devices with magic return codes */ 317 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus, 318 u32 dev_id, u32 mask) 319 { 320 u32 retval = 0; 321 int err; 322 323 err = asus_wmi_get_devstate(asus, dev_id, &retval); 324 if (err < 0) 325 return err; 326 327 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT)) 328 return -ENODEV; 329 330 if (mask == ASUS_WMI_DSTS_STATUS_BIT) { 331 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT) 332 return -ENODEV; 333 } 334 335 return retval & mask; 336 } 337 338 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id) 339 { 340 return asus_wmi_get_devstate_bits(asus, dev_id, 341 ASUS_WMI_DSTS_STATUS_BIT); 342 } 343 344 static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id) 345 { 346 u32 retval; 347 int status = asus_wmi_get_devstate(asus, dev_id, &retval); 348 349 return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT); 350 } 351 352 /* Input **********************************************************************/ 353 354 static int asus_wmi_input_init(struct asus_wmi *asus) 355 { 356 int err, result; 357 358 asus->inputdev = input_allocate_device(); 359 if (!asus->inputdev) 360 return -ENOMEM; 361 362 asus->inputdev->name = asus->driver->input_name; 363 asus->inputdev->phys = asus->driver->input_phys; 364 asus->inputdev->id.bustype = BUS_HOST; 365 asus->inputdev->dev.parent = &asus->platform_device->dev; 366 set_bit(EV_REP, asus->inputdev->evbit); 367 368 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL); 369 if (err) 370 goto err_free_dev; 371 372 if (asus->driver->quirks->use_kbd_dock_devid) { 373 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_KBD_DOCK); 374 if (result >= 0) { 375 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE); 376 input_report_switch(asus->inputdev, SW_TABLET_MODE, !result); 377 } else if (result != -ENODEV) { 378 pr_err("Error checking for keyboard-dock: %d\n", result); 379 } 380 } 381 382 if (asus->driver->quirks->use_lid_flip_devid) { 383 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP); 384 if (result < 0) 385 asus->driver->quirks->use_lid_flip_devid = 0; 386 if (result >= 0) { 387 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE); 388 input_report_switch(asus->inputdev, SW_TABLET_MODE, result); 389 } else if (result == -ENODEV) { 390 pr_err("This device has lid_flip quirk but got ENODEV checking it. This is a bug."); 391 } else { 392 pr_err("Error checking for lid-flip: %d\n", result); 393 } 394 } 395 396 err = input_register_device(asus->inputdev); 397 if (err) 398 goto err_free_dev; 399 400 return 0; 401 402 err_free_dev: 403 input_free_device(asus->inputdev); 404 return err; 405 } 406 407 static void asus_wmi_input_exit(struct asus_wmi *asus) 408 { 409 if (asus->inputdev) 410 input_unregister_device(asus->inputdev); 411 412 asus->inputdev = NULL; 413 } 414 415 /* Tablet mode ****************************************************************/ 416 417 static void lid_flip_tablet_mode_get_state(struct asus_wmi *asus) 418 { 419 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP); 420 421 if (result >= 0) { 422 input_report_switch(asus->inputdev, SW_TABLET_MODE, result); 423 input_sync(asus->inputdev); 424 } 425 } 426 427 /* Battery ********************************************************************/ 428 429 /* The battery maximum charging percentage */ 430 static int charge_end_threshold; 431 432 static ssize_t charge_control_end_threshold_store(struct device *dev, 433 struct device_attribute *attr, 434 const char *buf, size_t count) 435 { 436 int value, ret, rv; 437 438 ret = kstrtouint(buf, 10, &value); 439 if (ret) 440 return ret; 441 442 if (value < 0 || value > 100) 443 return -EINVAL; 444 445 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv); 446 if (ret) 447 return ret; 448 449 if (rv != 1) 450 return -EIO; 451 452 /* There isn't any method in the DSDT to read the threshold, so we 453 * save the threshold. 454 */ 455 charge_end_threshold = value; 456 return count; 457 } 458 459 static ssize_t charge_control_end_threshold_show(struct device *device, 460 struct device_attribute *attr, 461 char *buf) 462 { 463 return sprintf(buf, "%d\n", charge_end_threshold); 464 } 465 466 static DEVICE_ATTR_RW(charge_control_end_threshold); 467 468 static int asus_wmi_battery_add(struct power_supply *battery) 469 { 470 /* The WMI method does not provide a way to specific a battery, so we 471 * just assume it is the first battery. 472 * Note: On some newer ASUS laptops (Zenbook UM431DA), the primary/first 473 * battery is named BATT. 474 */ 475 if (strcmp(battery->desc->name, "BAT0") != 0 && 476 strcmp(battery->desc->name, "BAT1") != 0 && 477 strcmp(battery->desc->name, "BATC") != 0 && 478 strcmp(battery->desc->name, "BATT") != 0) 479 return -ENODEV; 480 481 if (device_create_file(&battery->dev, 482 &dev_attr_charge_control_end_threshold)) 483 return -ENODEV; 484 485 /* The charge threshold is only reset when the system is power cycled, 486 * and we can't get the current threshold so let set it to 100% when 487 * a battery is added. 488 */ 489 asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL); 490 charge_end_threshold = 100; 491 492 return 0; 493 } 494 495 static int asus_wmi_battery_remove(struct power_supply *battery) 496 { 497 device_remove_file(&battery->dev, 498 &dev_attr_charge_control_end_threshold); 499 return 0; 500 } 501 502 static struct acpi_battery_hook battery_hook = { 503 .add_battery = asus_wmi_battery_add, 504 .remove_battery = asus_wmi_battery_remove, 505 .name = "ASUS Battery Extension", 506 }; 507 508 static void asus_wmi_battery_init(struct asus_wmi *asus) 509 { 510 asus->battery_rsoc_available = false; 511 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) { 512 asus->battery_rsoc_available = true; 513 battery_hook_register(&battery_hook); 514 } 515 } 516 517 static void asus_wmi_battery_exit(struct asus_wmi *asus) 518 { 519 if (asus->battery_rsoc_available) 520 battery_hook_unregister(&battery_hook); 521 } 522 523 /* LEDs ***********************************************************************/ 524 525 /* 526 * These functions actually update the LED's, and are called from a 527 * workqueue. By doing this as separate work rather than when the LED 528 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 529 * potentially bad time, such as a timer interrupt. 530 */ 531 static void tpd_led_update(struct work_struct *work) 532 { 533 int ctrl_param; 534 struct asus_wmi *asus; 535 536 asus = container_of(work, struct asus_wmi, tpd_led_work); 537 538 ctrl_param = asus->tpd_led_wk; 539 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL); 540 } 541 542 static void tpd_led_set(struct led_classdev *led_cdev, 543 enum led_brightness value) 544 { 545 struct asus_wmi *asus; 546 547 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 548 549 asus->tpd_led_wk = !!value; 550 queue_work(asus->led_workqueue, &asus->tpd_led_work); 551 } 552 553 static int read_tpd_led_state(struct asus_wmi *asus) 554 { 555 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED); 556 } 557 558 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) 559 { 560 struct asus_wmi *asus; 561 562 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 563 564 return read_tpd_led_state(asus); 565 } 566 567 static void kbd_led_update(struct asus_wmi *asus) 568 { 569 int ctrl_param = 0; 570 571 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F); 572 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL); 573 } 574 575 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env) 576 { 577 int retval; 578 579 /* 580 * bits 0-2: level 581 * bit 7: light on/off 582 * bit 8-10: environment (0: dark, 1: normal, 2: light) 583 * bit 17: status unknown 584 */ 585 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT, 586 0xFFFF); 587 588 /* Unknown status is considered as off */ 589 if (retval == 0x8000) 590 retval = 0; 591 592 if (retval < 0) 593 return retval; 594 595 if (level) 596 *level = retval & 0x7F; 597 if (env) 598 *env = (retval >> 8) & 0x7F; 599 return 0; 600 } 601 602 static void do_kbd_led_set(struct led_classdev *led_cdev, int value) 603 { 604 struct asus_wmi *asus; 605 int max_level; 606 607 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 608 max_level = asus->kbd_led.max_brightness; 609 610 asus->kbd_led_wk = clamp_val(value, 0, max_level); 611 kbd_led_update(asus); 612 } 613 614 static void kbd_led_set(struct led_classdev *led_cdev, 615 enum led_brightness value) 616 { 617 /* Prevent disabling keyboard backlight on module unregister */ 618 if (led_cdev->flags & LED_UNREGISTERING) 619 return; 620 621 do_kbd_led_set(led_cdev, value); 622 } 623 624 static void kbd_led_set_by_kbd(struct asus_wmi *asus, enum led_brightness value) 625 { 626 struct led_classdev *led_cdev = &asus->kbd_led; 627 628 do_kbd_led_set(led_cdev, value); 629 led_classdev_notify_brightness_hw_changed(led_cdev, asus->kbd_led_wk); 630 } 631 632 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev) 633 { 634 struct asus_wmi *asus; 635 int retval, value; 636 637 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 638 639 retval = kbd_led_read(asus, &value, NULL); 640 if (retval < 0) 641 return retval; 642 643 return value; 644 } 645 646 static int wlan_led_unknown_state(struct asus_wmi *asus) 647 { 648 u32 result; 649 650 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 651 652 return result & ASUS_WMI_DSTS_UNKNOWN_BIT; 653 } 654 655 static void wlan_led_update(struct work_struct *work) 656 { 657 int ctrl_param; 658 struct asus_wmi *asus; 659 660 asus = container_of(work, struct asus_wmi, wlan_led_work); 661 662 ctrl_param = asus->wlan_led_wk; 663 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL); 664 } 665 666 static void wlan_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, wlan_led); 672 673 asus->wlan_led_wk = !!value; 674 queue_work(asus->led_workqueue, &asus->wlan_led_work); 675 } 676 677 static enum led_brightness wlan_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, wlan_led); 683 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 684 685 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 686 } 687 688 static void lightbar_led_update(struct work_struct *work) 689 { 690 struct asus_wmi *asus; 691 int ctrl_param; 692 693 asus = container_of(work, struct asus_wmi, lightbar_led_work); 694 695 ctrl_param = asus->lightbar_led_wk; 696 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL); 697 } 698 699 static void lightbar_led_set(struct led_classdev *led_cdev, 700 enum led_brightness value) 701 { 702 struct asus_wmi *asus; 703 704 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 705 706 asus->lightbar_led_wk = !!value; 707 queue_work(asus->led_workqueue, &asus->lightbar_led_work); 708 } 709 710 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev) 711 { 712 struct asus_wmi *asus; 713 u32 result; 714 715 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 716 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result); 717 718 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK; 719 } 720 721 static void asus_wmi_led_exit(struct asus_wmi *asus) 722 { 723 led_classdev_unregister(&asus->kbd_led); 724 led_classdev_unregister(&asus->tpd_led); 725 led_classdev_unregister(&asus->wlan_led); 726 led_classdev_unregister(&asus->lightbar_led); 727 728 if (asus->led_workqueue) 729 destroy_workqueue(asus->led_workqueue); 730 } 731 732 static int asus_wmi_led_init(struct asus_wmi *asus) 733 { 734 int rv = 0, led_val; 735 736 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 737 if (!asus->led_workqueue) 738 return -ENOMEM; 739 740 if (read_tpd_led_state(asus) >= 0) { 741 INIT_WORK(&asus->tpd_led_work, tpd_led_update); 742 743 asus->tpd_led.name = "asus::touchpad"; 744 asus->tpd_led.brightness_set = tpd_led_set; 745 asus->tpd_led.brightness_get = tpd_led_get; 746 asus->tpd_led.max_brightness = 1; 747 748 rv = led_classdev_register(&asus->platform_device->dev, 749 &asus->tpd_led); 750 if (rv) 751 goto error; 752 } 753 754 if (!kbd_led_read(asus, &led_val, NULL)) { 755 asus->kbd_led_wk = led_val; 756 asus->kbd_led.name = "asus::kbd_backlight"; 757 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED; 758 asus->kbd_led.brightness_set = kbd_led_set; 759 asus->kbd_led.brightness_get = kbd_led_get; 760 asus->kbd_led.max_brightness = 3; 761 762 rv = led_classdev_register(&asus->platform_device->dev, 763 &asus->kbd_led); 764 if (rv) 765 goto error; 766 } 767 768 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_WIRELESS_LED) 769 && (asus->driver->quirks->wapf > 0)) { 770 INIT_WORK(&asus->wlan_led_work, wlan_led_update); 771 772 asus->wlan_led.name = "asus::wlan"; 773 asus->wlan_led.brightness_set = wlan_led_set; 774 if (!wlan_led_unknown_state(asus)) 775 asus->wlan_led.brightness_get = wlan_led_get; 776 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME; 777 asus->wlan_led.max_brightness = 1; 778 asus->wlan_led.default_trigger = "asus-wlan"; 779 780 rv = led_classdev_register(&asus->platform_device->dev, 781 &asus->wlan_led); 782 if (rv) 783 goto error; 784 } 785 786 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_LIGHTBAR)) { 787 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update); 788 789 asus->lightbar_led.name = "asus::lightbar"; 790 asus->lightbar_led.brightness_set = lightbar_led_set; 791 asus->lightbar_led.brightness_get = lightbar_led_get; 792 asus->lightbar_led.max_brightness = 1; 793 794 rv = led_classdev_register(&asus->platform_device->dev, 795 &asus->lightbar_led); 796 } 797 798 error: 799 if (rv) 800 asus_wmi_led_exit(asus); 801 802 return rv; 803 } 804 805 /* RF *************************************************************************/ 806 807 /* 808 * PCI hotplug (for wlan rfkill) 809 */ 810 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus) 811 { 812 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 813 814 if (result < 0) 815 return false; 816 return !result; 817 } 818 819 static void asus_rfkill_hotplug(struct asus_wmi *asus) 820 { 821 struct pci_dev *dev; 822 struct pci_bus *bus; 823 bool blocked; 824 bool absent; 825 u32 l; 826 827 mutex_lock(&asus->wmi_lock); 828 blocked = asus_wlan_rfkill_blocked(asus); 829 mutex_unlock(&asus->wmi_lock); 830 831 mutex_lock(&asus->hotplug_lock); 832 pci_lock_rescan_remove(); 833 834 if (asus->wlan.rfkill) 835 rfkill_set_sw_state(asus->wlan.rfkill, blocked); 836 837 if (asus->hotplug_slot.ops) { 838 bus = pci_find_bus(0, 1); 839 if (!bus) { 840 pr_warn("Unable to find PCI bus 1?\n"); 841 goto out_unlock; 842 } 843 844 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) { 845 pr_err("Unable to read PCI config space?\n"); 846 goto out_unlock; 847 } 848 absent = (l == 0xffffffff); 849 850 if (blocked != absent) { 851 pr_warn("BIOS says wireless lan is %s, " 852 "but the pci device is %s\n", 853 blocked ? "blocked" : "unblocked", 854 absent ? "absent" : "present"); 855 pr_warn("skipped wireless hotplug as probably " 856 "inappropriate for this model\n"); 857 goto out_unlock; 858 } 859 860 if (!blocked) { 861 dev = pci_get_slot(bus, 0); 862 if (dev) { 863 /* Device already present */ 864 pci_dev_put(dev); 865 goto out_unlock; 866 } 867 dev = pci_scan_single_device(bus, 0); 868 if (dev) { 869 pci_bus_assign_resources(bus); 870 pci_bus_add_device(dev); 871 } 872 } else { 873 dev = pci_get_slot(bus, 0); 874 if (dev) { 875 pci_stop_and_remove_bus_device(dev); 876 pci_dev_put(dev); 877 } 878 } 879 } 880 881 out_unlock: 882 pci_unlock_rescan_remove(); 883 mutex_unlock(&asus->hotplug_lock); 884 } 885 886 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data) 887 { 888 struct asus_wmi *asus = data; 889 890 if (event != ACPI_NOTIFY_BUS_CHECK) 891 return; 892 893 /* 894 * We can't call directly asus_rfkill_hotplug because most 895 * of the time WMBC is still being executed and not reetrant. 896 * There is currently no way to tell ACPICA that we want this 897 * method to be serialized, we schedule a asus_rfkill_hotplug 898 * call later, in a safer context. 899 */ 900 queue_work(asus->hotplug_workqueue, &asus->hotplug_work); 901 } 902 903 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node) 904 { 905 acpi_status status; 906 acpi_handle handle; 907 908 status = acpi_get_handle(NULL, node, &handle); 909 if (ACPI_FAILURE(status)) 910 return -ENODEV; 911 912 status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY, 913 asus_rfkill_notify, asus); 914 if (ACPI_FAILURE(status)) 915 pr_warn("Failed to register notify on %s\n", node); 916 917 return 0; 918 } 919 920 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node) 921 { 922 acpi_status status = AE_OK; 923 acpi_handle handle; 924 925 status = acpi_get_handle(NULL, node, &handle); 926 if (ACPI_FAILURE(status)) 927 return; 928 929 status = acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY, 930 asus_rfkill_notify); 931 if (ACPI_FAILURE(status)) 932 pr_err("Error removing rfkill notify handler %s\n", node); 933 } 934 935 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot, 936 u8 *value) 937 { 938 struct asus_wmi *asus = container_of(hotplug_slot, 939 struct asus_wmi, hotplug_slot); 940 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 941 942 if (result < 0) 943 return result; 944 945 *value = !!result; 946 return 0; 947 } 948 949 static const struct hotplug_slot_ops asus_hotplug_slot_ops = { 950 .get_adapter_status = asus_get_adapter_status, 951 .get_power_status = asus_get_adapter_status, 952 }; 953 954 static void asus_hotplug_work(struct work_struct *work) 955 { 956 struct asus_wmi *asus; 957 958 asus = container_of(work, struct asus_wmi, hotplug_work); 959 asus_rfkill_hotplug(asus); 960 } 961 962 static int asus_setup_pci_hotplug(struct asus_wmi *asus) 963 { 964 int ret = -ENOMEM; 965 struct pci_bus *bus = pci_find_bus(0, 1); 966 967 if (!bus) { 968 pr_err("Unable to find wifi PCI bus\n"); 969 return -ENODEV; 970 } 971 972 asus->hotplug_workqueue = 973 create_singlethread_workqueue("hotplug_workqueue"); 974 if (!asus->hotplug_workqueue) 975 goto error_workqueue; 976 977 INIT_WORK(&asus->hotplug_work, asus_hotplug_work); 978 979 asus->hotplug_slot.ops = &asus_hotplug_slot_ops; 980 981 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi"); 982 if (ret) { 983 pr_err("Unable to register hotplug slot - %d\n", ret); 984 goto error_register; 985 } 986 987 return 0; 988 989 error_register: 990 asus->hotplug_slot.ops = NULL; 991 destroy_workqueue(asus->hotplug_workqueue); 992 error_workqueue: 993 return ret; 994 } 995 996 /* 997 * Rfkill devices 998 */ 999 static int asus_rfkill_set(void *data, bool blocked) 1000 { 1001 struct asus_rfkill *priv = data; 1002 u32 ctrl_param = !blocked; 1003 u32 dev_id = priv->dev_id; 1004 1005 /* 1006 * If the user bit is set, BIOS can't set and record the wlan status, 1007 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED 1008 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN). 1009 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED 1010 * while setting the wlan status through WMI. 1011 * This is also the behavior that windows app will do. 1012 */ 1013 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 1014 priv->asus->driver->wlan_ctrl_by_user) 1015 dev_id = ASUS_WMI_DEVID_WLAN_LED; 1016 1017 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL); 1018 } 1019 1020 static void asus_rfkill_query(struct rfkill *rfkill, void *data) 1021 { 1022 struct asus_rfkill *priv = data; 1023 int result; 1024 1025 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id); 1026 1027 if (result < 0) 1028 return; 1029 1030 rfkill_set_sw_state(priv->rfkill, !result); 1031 } 1032 1033 static int asus_rfkill_wlan_set(void *data, bool blocked) 1034 { 1035 struct asus_rfkill *priv = data; 1036 struct asus_wmi *asus = priv->asus; 1037 int ret; 1038 1039 /* 1040 * This handler is enabled only if hotplug is enabled. 1041 * In this case, the asus_wmi_set_devstate() will 1042 * trigger a wmi notification and we need to wait 1043 * this call to finish before being able to call 1044 * any wmi method 1045 */ 1046 mutex_lock(&asus->wmi_lock); 1047 ret = asus_rfkill_set(data, blocked); 1048 mutex_unlock(&asus->wmi_lock); 1049 return ret; 1050 } 1051 1052 static const struct rfkill_ops asus_rfkill_wlan_ops = { 1053 .set_block = asus_rfkill_wlan_set, 1054 .query = asus_rfkill_query, 1055 }; 1056 1057 static const struct rfkill_ops asus_rfkill_ops = { 1058 .set_block = asus_rfkill_set, 1059 .query = asus_rfkill_query, 1060 }; 1061 1062 static int asus_new_rfkill(struct asus_wmi *asus, 1063 struct asus_rfkill *arfkill, 1064 const char *name, enum rfkill_type type, int dev_id) 1065 { 1066 int result = asus_wmi_get_devstate_simple(asus, dev_id); 1067 struct rfkill **rfkill = &arfkill->rfkill; 1068 1069 if (result < 0) 1070 return result; 1071 1072 arfkill->dev_id = dev_id; 1073 arfkill->asus = asus; 1074 1075 if (dev_id == ASUS_WMI_DEVID_WLAN && 1076 asus->driver->quirks->hotplug_wireless) 1077 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1078 &asus_rfkill_wlan_ops, arfkill); 1079 else 1080 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1081 &asus_rfkill_ops, arfkill); 1082 1083 if (!*rfkill) 1084 return -EINVAL; 1085 1086 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 1087 (asus->driver->quirks->wapf > 0)) 1088 rfkill_set_led_trigger_name(*rfkill, "asus-wlan"); 1089 1090 rfkill_init_sw_state(*rfkill, !result); 1091 result = rfkill_register(*rfkill); 1092 if (result) { 1093 rfkill_destroy(*rfkill); 1094 *rfkill = NULL; 1095 return result; 1096 } 1097 return 0; 1098 } 1099 1100 static void asus_wmi_rfkill_exit(struct asus_wmi *asus) 1101 { 1102 if (asus->driver->wlan_ctrl_by_user && ashs_present()) 1103 return; 1104 1105 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1106 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1107 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1108 if (asus->wlan.rfkill) { 1109 rfkill_unregister(asus->wlan.rfkill); 1110 rfkill_destroy(asus->wlan.rfkill); 1111 asus->wlan.rfkill = NULL; 1112 } 1113 /* 1114 * Refresh pci hotplug in case the rfkill state was changed after 1115 * asus_unregister_rfkill_notifier() 1116 */ 1117 asus_rfkill_hotplug(asus); 1118 if (asus->hotplug_slot.ops) 1119 pci_hp_deregister(&asus->hotplug_slot); 1120 if (asus->hotplug_workqueue) 1121 destroy_workqueue(asus->hotplug_workqueue); 1122 1123 if (asus->bluetooth.rfkill) { 1124 rfkill_unregister(asus->bluetooth.rfkill); 1125 rfkill_destroy(asus->bluetooth.rfkill); 1126 asus->bluetooth.rfkill = NULL; 1127 } 1128 if (asus->wimax.rfkill) { 1129 rfkill_unregister(asus->wimax.rfkill); 1130 rfkill_destroy(asus->wimax.rfkill); 1131 asus->wimax.rfkill = NULL; 1132 } 1133 if (asus->wwan3g.rfkill) { 1134 rfkill_unregister(asus->wwan3g.rfkill); 1135 rfkill_destroy(asus->wwan3g.rfkill); 1136 asus->wwan3g.rfkill = NULL; 1137 } 1138 if (asus->gps.rfkill) { 1139 rfkill_unregister(asus->gps.rfkill); 1140 rfkill_destroy(asus->gps.rfkill); 1141 asus->gps.rfkill = NULL; 1142 } 1143 if (asus->uwb.rfkill) { 1144 rfkill_unregister(asus->uwb.rfkill); 1145 rfkill_destroy(asus->uwb.rfkill); 1146 asus->uwb.rfkill = NULL; 1147 } 1148 } 1149 1150 static int asus_wmi_rfkill_init(struct asus_wmi *asus) 1151 { 1152 int result = 0; 1153 1154 mutex_init(&asus->hotplug_lock); 1155 mutex_init(&asus->wmi_lock); 1156 1157 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan", 1158 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN); 1159 1160 if (result && result != -ENODEV) 1161 goto exit; 1162 1163 result = asus_new_rfkill(asus, &asus->bluetooth, 1164 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH, 1165 ASUS_WMI_DEVID_BLUETOOTH); 1166 1167 if (result && result != -ENODEV) 1168 goto exit; 1169 1170 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax", 1171 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX); 1172 1173 if (result && result != -ENODEV) 1174 goto exit; 1175 1176 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g", 1177 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G); 1178 1179 if (result && result != -ENODEV) 1180 goto exit; 1181 1182 result = asus_new_rfkill(asus, &asus->gps, "asus-gps", 1183 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS); 1184 1185 if (result && result != -ENODEV) 1186 goto exit; 1187 1188 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb", 1189 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB); 1190 1191 if (result && result != -ENODEV) 1192 goto exit; 1193 1194 if (!asus->driver->quirks->hotplug_wireless) 1195 goto exit; 1196 1197 result = asus_setup_pci_hotplug(asus); 1198 /* 1199 * If we get -EBUSY then something else is handling the PCI hotplug - 1200 * don't fail in this case 1201 */ 1202 if (result == -EBUSY) 1203 result = 0; 1204 1205 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1206 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1207 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1208 /* 1209 * Refresh pci hotplug in case the rfkill state was changed during 1210 * setup. 1211 */ 1212 asus_rfkill_hotplug(asus); 1213 1214 exit: 1215 if (result && result != -ENODEV) 1216 asus_wmi_rfkill_exit(asus); 1217 1218 if (result == -ENODEV) 1219 result = 0; 1220 1221 return result; 1222 } 1223 1224 /* Quirks *********************************************************************/ 1225 1226 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus) 1227 { 1228 struct pci_dev *xhci_pdev; 1229 u32 orig_ports_available; 1230 u32 ports_available = asus->driver->quirks->xusb2pr; 1231 1232 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL, 1233 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI, 1234 NULL); 1235 1236 if (!xhci_pdev) 1237 return; 1238 1239 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1240 &orig_ports_available); 1241 1242 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1243 cpu_to_le32(ports_available)); 1244 1245 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n", 1246 orig_ports_available, ports_available); 1247 } 1248 1249 /* 1250 * Some devices dont support or have borcken get_als method 1251 * but still support set method. 1252 */ 1253 static void asus_wmi_set_als(void) 1254 { 1255 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL); 1256 } 1257 1258 /* Hwmon device ***************************************************************/ 1259 1260 static int asus_agfn_fan_speed_read(struct asus_wmi *asus, int fan, 1261 int *speed) 1262 { 1263 struct agfn_fan_args args = { 1264 .agfn.len = sizeof(args), 1265 .agfn.mfun = ASUS_FAN_MFUN, 1266 .agfn.sfun = ASUS_FAN_SFUN_READ, 1267 .fan = fan, 1268 .speed = 0, 1269 }; 1270 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1271 int status; 1272 1273 if (fan != 1) 1274 return -EINVAL; 1275 1276 status = asus_wmi_evaluate_method_agfn(input); 1277 1278 if (status || args.agfn.err) 1279 return -ENXIO; 1280 1281 if (speed) 1282 *speed = args.speed; 1283 1284 return 0; 1285 } 1286 1287 static int asus_agfn_fan_speed_write(struct asus_wmi *asus, int fan, 1288 int *speed) 1289 { 1290 struct agfn_fan_args args = { 1291 .agfn.len = sizeof(args), 1292 .agfn.mfun = ASUS_FAN_MFUN, 1293 .agfn.sfun = ASUS_FAN_SFUN_WRITE, 1294 .fan = fan, 1295 .speed = speed ? *speed : 0, 1296 }; 1297 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1298 int status; 1299 1300 /* 1: for setting 1st fan's speed 0: setting auto mode */ 1301 if (fan != 1 && fan != 0) 1302 return -EINVAL; 1303 1304 status = asus_wmi_evaluate_method_agfn(input); 1305 1306 if (status || args.agfn.err) 1307 return -ENXIO; 1308 1309 if (speed && fan == 1) 1310 asus->agfn_pwm = *speed; 1311 1312 return 0; 1313 } 1314 1315 /* 1316 * Check if we can read the speed of one fan. If true we assume we can also 1317 * control it. 1318 */ 1319 static bool asus_wmi_has_agfn_fan(struct asus_wmi *asus) 1320 { 1321 int status; 1322 int speed; 1323 u32 value; 1324 1325 status = asus_agfn_fan_speed_read(asus, 1, &speed); 1326 if (status != 0) 1327 return false; 1328 1329 status = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value); 1330 if (status != 0) 1331 return false; 1332 1333 /* 1334 * We need to find a better way, probably using sfun, 1335 * bits or spec ... 1336 * Currently we disable it if: 1337 * - ASUS_WMI_UNSUPPORTED_METHOD is returned 1338 * - reverved bits are non-zero 1339 * - sfun and presence bit are not set 1340 */ 1341 return !(value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000 1342 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT))); 1343 } 1344 1345 static int asus_fan_set_auto(struct asus_wmi *asus) 1346 { 1347 int status; 1348 u32 retval; 1349 1350 switch (asus->fan_type) { 1351 case FAN_TYPE_SPEC83: 1352 status = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL, 1353 0, &retval); 1354 if (status) 1355 return status; 1356 1357 if (retval != 1) 1358 return -EIO; 1359 break; 1360 1361 case FAN_TYPE_AGFN: 1362 status = asus_agfn_fan_speed_write(asus, 0, NULL); 1363 if (status) 1364 return -ENXIO; 1365 break; 1366 1367 default: 1368 return -ENXIO; 1369 } 1370 1371 1372 return 0; 1373 } 1374 1375 static ssize_t pwm1_show(struct device *dev, 1376 struct device_attribute *attr, 1377 char *buf) 1378 { 1379 struct asus_wmi *asus = dev_get_drvdata(dev); 1380 int err; 1381 int value; 1382 1383 /* If we already set a value then just return it */ 1384 if (asus->agfn_pwm >= 0) 1385 return sprintf(buf, "%d\n", asus->agfn_pwm); 1386 1387 /* 1388 * If we haven't set already set a value through the AGFN interface, 1389 * we read a current value through the (now-deprecated) FAN_CTRL device. 1390 */ 1391 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value); 1392 if (err < 0) 1393 return err; 1394 1395 value &= 0xFF; 1396 1397 if (value == 1) /* Low Speed */ 1398 value = 85; 1399 else if (value == 2) 1400 value = 170; 1401 else if (value == 3) 1402 value = 255; 1403 else if (value) { 1404 pr_err("Unknown fan speed %#x\n", value); 1405 value = -1; 1406 } 1407 1408 return sprintf(buf, "%d\n", value); 1409 } 1410 1411 static ssize_t pwm1_store(struct device *dev, 1412 struct device_attribute *attr, 1413 const char *buf, size_t count) { 1414 struct asus_wmi *asus = dev_get_drvdata(dev); 1415 int value; 1416 int state; 1417 int ret; 1418 1419 ret = kstrtouint(buf, 10, &value); 1420 if (ret) 1421 return ret; 1422 1423 value = clamp(value, 0, 255); 1424 1425 state = asus_agfn_fan_speed_write(asus, 1, &value); 1426 if (state) 1427 pr_warn("Setting fan speed failed: %d\n", state); 1428 else 1429 asus->fan_pwm_mode = ASUS_FAN_CTRL_MANUAL; 1430 1431 return count; 1432 } 1433 1434 static ssize_t fan1_input_show(struct device *dev, 1435 struct device_attribute *attr, 1436 char *buf) 1437 { 1438 struct asus_wmi *asus = dev_get_drvdata(dev); 1439 int value; 1440 int ret; 1441 1442 switch (asus->fan_type) { 1443 case FAN_TYPE_SPEC83: 1444 ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL, 1445 &value); 1446 if (ret < 0) 1447 return ret; 1448 1449 value &= 0xffff; 1450 break; 1451 1452 case FAN_TYPE_AGFN: 1453 /* no speed readable on manual mode */ 1454 if (asus->fan_pwm_mode == ASUS_FAN_CTRL_MANUAL) 1455 return -ENXIO; 1456 1457 ret = asus_agfn_fan_speed_read(asus, 1, &value); 1458 if (ret) { 1459 pr_warn("reading fan speed failed: %d\n", ret); 1460 return -ENXIO; 1461 } 1462 break; 1463 1464 default: 1465 return -ENXIO; 1466 } 1467 1468 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100); 1469 } 1470 1471 static ssize_t pwm1_enable_show(struct device *dev, 1472 struct device_attribute *attr, 1473 char *buf) 1474 { 1475 struct asus_wmi *asus = dev_get_drvdata(dev); 1476 1477 /* 1478 * Just read back the cached pwm mode. 1479 * 1480 * For the CPU_FAN device, the spec indicates that we should be 1481 * able to read the device status and consult bit 19 to see if we 1482 * are in Full On or Automatic mode. However, this does not work 1483 * in practice on X532FL at least (the bit is always 0) and there's 1484 * also nothing in the DSDT to indicate that this behaviour exists. 1485 */ 1486 return sprintf(buf, "%d\n", asus->fan_pwm_mode); 1487 } 1488 1489 static ssize_t pwm1_enable_store(struct device *dev, 1490 struct device_attribute *attr, 1491 const char *buf, size_t count) 1492 { 1493 struct asus_wmi *asus = dev_get_drvdata(dev); 1494 int status = 0; 1495 int state; 1496 int value; 1497 int ret; 1498 u32 retval; 1499 1500 ret = kstrtouint(buf, 10, &state); 1501 if (ret) 1502 return ret; 1503 1504 if (asus->fan_type == FAN_TYPE_SPEC83) { 1505 switch (state) { /* standard documented hwmon values */ 1506 case ASUS_FAN_CTRL_FULLSPEED: 1507 value = 1; 1508 break; 1509 case ASUS_FAN_CTRL_AUTO: 1510 value = 0; 1511 break; 1512 default: 1513 return -EINVAL; 1514 } 1515 1516 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL, 1517 value, &retval); 1518 if (ret) 1519 return ret; 1520 1521 if (retval != 1) 1522 return -EIO; 1523 } else if (asus->fan_type == FAN_TYPE_AGFN) { 1524 switch (state) { 1525 case ASUS_FAN_CTRL_MANUAL: 1526 break; 1527 1528 case ASUS_FAN_CTRL_AUTO: 1529 status = asus_fan_set_auto(asus); 1530 if (status) 1531 return status; 1532 break; 1533 1534 default: 1535 return -EINVAL; 1536 } 1537 } 1538 1539 asus->fan_pwm_mode = state; 1540 return count; 1541 } 1542 1543 static ssize_t fan1_label_show(struct device *dev, 1544 struct device_attribute *attr, 1545 char *buf) 1546 { 1547 return sprintf(buf, "%s\n", ASUS_FAN_DESC); 1548 } 1549 1550 static ssize_t asus_hwmon_temp1(struct device *dev, 1551 struct device_attribute *attr, 1552 char *buf) 1553 { 1554 struct asus_wmi *asus = dev_get_drvdata(dev); 1555 u32 value; 1556 int err; 1557 1558 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value); 1559 if (err < 0) 1560 return err; 1561 1562 return sprintf(buf, "%ld\n", 1563 deci_kelvin_to_millicelsius(value & 0xFFFF)); 1564 } 1565 1566 /* Fan1 */ 1567 static DEVICE_ATTR_RW(pwm1); 1568 static DEVICE_ATTR_RW(pwm1_enable); 1569 static DEVICE_ATTR_RO(fan1_input); 1570 static DEVICE_ATTR_RO(fan1_label); 1571 1572 /* Temperature */ 1573 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL); 1574 1575 static struct attribute *hwmon_attributes[] = { 1576 &dev_attr_pwm1.attr, 1577 &dev_attr_pwm1_enable.attr, 1578 &dev_attr_fan1_input.attr, 1579 &dev_attr_fan1_label.attr, 1580 1581 &dev_attr_temp1_input.attr, 1582 NULL 1583 }; 1584 1585 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj, 1586 struct attribute *attr, int idx) 1587 { 1588 struct device *dev = container_of(kobj, struct device, kobj); 1589 struct asus_wmi *asus = dev_get_drvdata(dev->parent); 1590 u32 value = ASUS_WMI_UNSUPPORTED_METHOD; 1591 1592 if (attr == &dev_attr_pwm1.attr) { 1593 if (asus->fan_type != FAN_TYPE_AGFN) 1594 return 0; 1595 } else if (attr == &dev_attr_fan1_input.attr 1596 || attr == &dev_attr_fan1_label.attr 1597 || attr == &dev_attr_pwm1_enable.attr) { 1598 if (asus->fan_type == FAN_TYPE_NONE) 1599 return 0; 1600 } else if (attr == &dev_attr_temp1_input.attr) { 1601 int err = asus_wmi_get_devstate(asus, 1602 ASUS_WMI_DEVID_THERMAL_CTRL, 1603 &value); 1604 1605 if (err < 0) 1606 return 0; /* can't return negative here */ 1607 1608 /* 1609 * If the temperature value in deci-Kelvin is near the absolute 1610 * zero temperature, something is clearly wrong 1611 */ 1612 if (value == 0 || value == 1) 1613 return 0; 1614 } 1615 1616 return attr->mode; 1617 } 1618 1619 static const struct attribute_group hwmon_attribute_group = { 1620 .is_visible = asus_hwmon_sysfs_is_visible, 1621 .attrs = hwmon_attributes 1622 }; 1623 __ATTRIBUTE_GROUPS(hwmon_attribute); 1624 1625 static int asus_wmi_hwmon_init(struct asus_wmi *asus) 1626 { 1627 struct device *dev = &asus->platform_device->dev; 1628 struct device *hwmon; 1629 1630 hwmon = devm_hwmon_device_register_with_groups(dev, "asus", asus, 1631 hwmon_attribute_groups); 1632 1633 if (IS_ERR(hwmon)) { 1634 pr_err("Could not register asus hwmon device\n"); 1635 return PTR_ERR(hwmon); 1636 } 1637 return 0; 1638 } 1639 1640 static int asus_wmi_fan_init(struct asus_wmi *asus) 1641 { 1642 asus->fan_type = FAN_TYPE_NONE; 1643 asus->agfn_pwm = -1; 1644 1645 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL)) 1646 asus->fan_type = FAN_TYPE_SPEC83; 1647 else if (asus_wmi_has_agfn_fan(asus)) 1648 asus->fan_type = FAN_TYPE_AGFN; 1649 1650 if (asus->fan_type == FAN_TYPE_NONE) 1651 return -ENODEV; 1652 1653 asus_fan_set_auto(asus); 1654 asus->fan_pwm_mode = ASUS_FAN_CTRL_AUTO; 1655 return 0; 1656 } 1657 1658 /* Fan mode *******************************************************************/ 1659 1660 static int fan_boost_mode_check_present(struct asus_wmi *asus) 1661 { 1662 u32 result; 1663 int err; 1664 1665 asus->fan_boost_mode_available = false; 1666 1667 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_BOOST_MODE, 1668 &result); 1669 if (err) { 1670 if (err == -ENODEV) 1671 return 0; 1672 else 1673 return err; 1674 } 1675 1676 if ((result & ASUS_WMI_DSTS_PRESENCE_BIT) && 1677 (result & ASUS_FAN_BOOST_MODES_MASK)) { 1678 asus->fan_boost_mode_available = true; 1679 asus->fan_boost_mode_mask = result & ASUS_FAN_BOOST_MODES_MASK; 1680 } 1681 1682 return 0; 1683 } 1684 1685 static int fan_boost_mode_write(struct asus_wmi *asus) 1686 { 1687 int err; 1688 u8 value; 1689 u32 retval; 1690 1691 value = asus->fan_boost_mode; 1692 1693 pr_info("Set fan boost mode: %u\n", value); 1694 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_FAN_BOOST_MODE, value, 1695 &retval); 1696 1697 sysfs_notify(&asus->platform_device->dev.kobj, NULL, 1698 "fan_boost_mode"); 1699 1700 if (err) { 1701 pr_warn("Failed to set fan boost mode: %d\n", err); 1702 return err; 1703 } 1704 1705 if (retval != 1) { 1706 pr_warn("Failed to set fan boost mode (retval): 0x%x\n", 1707 retval); 1708 return -EIO; 1709 } 1710 1711 return 0; 1712 } 1713 1714 static int fan_boost_mode_switch_next(struct asus_wmi *asus) 1715 { 1716 u8 mask = asus->fan_boost_mode_mask; 1717 1718 if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_NORMAL) { 1719 if (mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK) 1720 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_OVERBOOST; 1721 else if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK) 1722 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT; 1723 } else if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) { 1724 if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK) 1725 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT; 1726 else 1727 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL; 1728 } else { 1729 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL; 1730 } 1731 1732 return fan_boost_mode_write(asus); 1733 } 1734 1735 static ssize_t fan_boost_mode_show(struct device *dev, 1736 struct device_attribute *attr, char *buf) 1737 { 1738 struct asus_wmi *asus = dev_get_drvdata(dev); 1739 1740 return scnprintf(buf, PAGE_SIZE, "%d\n", asus->fan_boost_mode); 1741 } 1742 1743 static ssize_t fan_boost_mode_store(struct device *dev, 1744 struct device_attribute *attr, 1745 const char *buf, size_t count) 1746 { 1747 int result; 1748 u8 new_mode; 1749 struct asus_wmi *asus = dev_get_drvdata(dev); 1750 u8 mask = asus->fan_boost_mode_mask; 1751 1752 result = kstrtou8(buf, 10, &new_mode); 1753 if (result < 0) { 1754 pr_warn("Trying to store invalid value\n"); 1755 return result; 1756 } 1757 1758 if (new_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) { 1759 if (!(mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK)) 1760 return -EINVAL; 1761 } else if (new_mode == ASUS_FAN_BOOST_MODE_SILENT) { 1762 if (!(mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)) 1763 return -EINVAL; 1764 } else if (new_mode != ASUS_FAN_BOOST_MODE_NORMAL) { 1765 return -EINVAL; 1766 } 1767 1768 asus->fan_boost_mode = new_mode; 1769 fan_boost_mode_write(asus); 1770 1771 return count; 1772 } 1773 1774 // Fan boost mode: 0 - normal, 1 - overboost, 2 - silent 1775 static DEVICE_ATTR_RW(fan_boost_mode); 1776 1777 /* Throttle thermal policy ****************************************************/ 1778 1779 static int throttle_thermal_policy_check_present(struct asus_wmi *asus) 1780 { 1781 u32 result; 1782 int err; 1783 1784 asus->throttle_thermal_policy_available = false; 1785 1786 err = asus_wmi_get_devstate(asus, 1787 ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY, 1788 &result); 1789 if (err) { 1790 if (err == -ENODEV) 1791 return 0; 1792 return err; 1793 } 1794 1795 if (result & ASUS_WMI_DSTS_PRESENCE_BIT) 1796 asus->throttle_thermal_policy_available = true; 1797 1798 return 0; 1799 } 1800 1801 static int throttle_thermal_policy_write(struct asus_wmi *asus) 1802 { 1803 int err; 1804 u8 value; 1805 u32 retval; 1806 1807 value = asus->throttle_thermal_policy_mode; 1808 1809 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY, 1810 value, &retval); 1811 1812 sysfs_notify(&asus->platform_device->dev.kobj, NULL, 1813 "throttle_thermal_policy"); 1814 1815 if (err) { 1816 pr_warn("Failed to set throttle thermal policy: %d\n", err); 1817 return err; 1818 } 1819 1820 if (retval != 1) { 1821 pr_warn("Failed to set throttle thermal policy (retval): 0x%x\n", 1822 retval); 1823 return -EIO; 1824 } 1825 1826 return 0; 1827 } 1828 1829 static int throttle_thermal_policy_set_default(struct asus_wmi *asus) 1830 { 1831 if (!asus->throttle_thermal_policy_available) 1832 return 0; 1833 1834 asus->throttle_thermal_policy_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT; 1835 return throttle_thermal_policy_write(asus); 1836 } 1837 1838 static int throttle_thermal_policy_switch_next(struct asus_wmi *asus) 1839 { 1840 u8 new_mode = asus->throttle_thermal_policy_mode + 1; 1841 1842 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT) 1843 new_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT; 1844 1845 asus->throttle_thermal_policy_mode = new_mode; 1846 return throttle_thermal_policy_write(asus); 1847 } 1848 1849 static ssize_t throttle_thermal_policy_show(struct device *dev, 1850 struct device_attribute *attr, char *buf) 1851 { 1852 struct asus_wmi *asus = dev_get_drvdata(dev); 1853 u8 mode = asus->throttle_thermal_policy_mode; 1854 1855 return scnprintf(buf, PAGE_SIZE, "%d\n", mode); 1856 } 1857 1858 static ssize_t throttle_thermal_policy_store(struct device *dev, 1859 struct device_attribute *attr, 1860 const char *buf, size_t count) 1861 { 1862 int result; 1863 u8 new_mode; 1864 struct asus_wmi *asus = dev_get_drvdata(dev); 1865 1866 result = kstrtou8(buf, 10, &new_mode); 1867 if (result < 0) 1868 return result; 1869 1870 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT) 1871 return -EINVAL; 1872 1873 asus->throttle_thermal_policy_mode = new_mode; 1874 throttle_thermal_policy_write(asus); 1875 1876 return count; 1877 } 1878 1879 // Throttle thermal policy: 0 - default, 1 - overboost, 2 - silent 1880 static DEVICE_ATTR_RW(throttle_thermal_policy); 1881 1882 /* Backlight ******************************************************************/ 1883 1884 static int read_backlight_power(struct asus_wmi *asus) 1885 { 1886 int ret; 1887 1888 if (asus->driver->quirks->store_backlight_power) 1889 ret = !asus->driver->panel_power; 1890 else 1891 ret = asus_wmi_get_devstate_simple(asus, 1892 ASUS_WMI_DEVID_BACKLIGHT); 1893 1894 if (ret < 0) 1895 return ret; 1896 1897 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; 1898 } 1899 1900 static int read_brightness_max(struct asus_wmi *asus) 1901 { 1902 u32 retval; 1903 int err; 1904 1905 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1906 if (err < 0) 1907 return err; 1908 1909 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK; 1910 retval >>= 8; 1911 1912 if (!retval) 1913 return -ENODEV; 1914 1915 return retval; 1916 } 1917 1918 static int read_brightness(struct backlight_device *bd) 1919 { 1920 struct asus_wmi *asus = bl_get_data(bd); 1921 u32 retval; 1922 int err; 1923 1924 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1925 if (err < 0) 1926 return err; 1927 1928 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 1929 } 1930 1931 static u32 get_scalar_command(struct backlight_device *bd) 1932 { 1933 struct asus_wmi *asus = bl_get_data(bd); 1934 u32 ctrl_param = 0; 1935 1936 if ((asus->driver->brightness < bd->props.brightness) || 1937 bd->props.brightness == bd->props.max_brightness) 1938 ctrl_param = 0x00008001; 1939 else if ((asus->driver->brightness > bd->props.brightness) || 1940 bd->props.brightness == 0) 1941 ctrl_param = 0x00008000; 1942 1943 asus->driver->brightness = bd->props.brightness; 1944 1945 return ctrl_param; 1946 } 1947 1948 static int update_bl_status(struct backlight_device *bd) 1949 { 1950 struct asus_wmi *asus = bl_get_data(bd); 1951 u32 ctrl_param; 1952 int power, err = 0; 1953 1954 power = read_backlight_power(asus); 1955 if (power != -ENODEV && bd->props.power != power) { 1956 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK); 1957 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 1958 ctrl_param, NULL); 1959 if (asus->driver->quirks->store_backlight_power) 1960 asus->driver->panel_power = bd->props.power; 1961 1962 /* When using scalar brightness, updating the brightness 1963 * will mess with the backlight power */ 1964 if (asus->driver->quirks->scalar_panel_brightness) 1965 return err; 1966 } 1967 1968 if (asus->driver->quirks->scalar_panel_brightness) 1969 ctrl_param = get_scalar_command(bd); 1970 else 1971 ctrl_param = bd->props.brightness; 1972 1973 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS, 1974 ctrl_param, NULL); 1975 1976 return err; 1977 } 1978 1979 static const struct backlight_ops asus_wmi_bl_ops = { 1980 .get_brightness = read_brightness, 1981 .update_status = update_bl_status, 1982 }; 1983 1984 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code) 1985 { 1986 struct backlight_device *bd = asus->backlight_device; 1987 int old = bd->props.brightness; 1988 int new = old; 1989 1990 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1991 new = code - NOTIFY_BRNUP_MIN + 1; 1992 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 1993 new = code - NOTIFY_BRNDOWN_MIN; 1994 1995 bd->props.brightness = new; 1996 backlight_update_status(bd); 1997 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 1998 1999 return old; 2000 } 2001 2002 static int asus_wmi_backlight_init(struct asus_wmi *asus) 2003 { 2004 struct backlight_device *bd; 2005 struct backlight_properties props; 2006 int max; 2007 int power; 2008 2009 max = read_brightness_max(asus); 2010 if (max < 0) 2011 return max; 2012 2013 power = read_backlight_power(asus); 2014 if (power == -ENODEV) 2015 power = FB_BLANK_UNBLANK; 2016 else if (power < 0) 2017 return power; 2018 2019 memset(&props, 0, sizeof(struct backlight_properties)); 2020 props.type = BACKLIGHT_PLATFORM; 2021 props.max_brightness = max; 2022 bd = backlight_device_register(asus->driver->name, 2023 &asus->platform_device->dev, asus, 2024 &asus_wmi_bl_ops, &props); 2025 if (IS_ERR(bd)) { 2026 pr_err("Could not register backlight device\n"); 2027 return PTR_ERR(bd); 2028 } 2029 2030 asus->backlight_device = bd; 2031 2032 if (asus->driver->quirks->store_backlight_power) 2033 asus->driver->panel_power = power; 2034 2035 bd->props.brightness = read_brightness(bd); 2036 bd->props.power = power; 2037 backlight_update_status(bd); 2038 2039 asus->driver->brightness = bd->props.brightness; 2040 2041 return 0; 2042 } 2043 2044 static void asus_wmi_backlight_exit(struct asus_wmi *asus) 2045 { 2046 backlight_device_unregister(asus->backlight_device); 2047 2048 asus->backlight_device = NULL; 2049 } 2050 2051 static int is_display_toggle(int code) 2052 { 2053 /* display toggle keys */ 2054 if ((code >= 0x61 && code <= 0x67) || 2055 (code >= 0x8c && code <= 0x93) || 2056 (code >= 0xa0 && code <= 0xa7) || 2057 (code >= 0xd0 && code <= 0xd5)) 2058 return 1; 2059 2060 return 0; 2061 } 2062 2063 /* Fn-lock ********************************************************************/ 2064 2065 static bool asus_wmi_has_fnlock_key(struct asus_wmi *asus) 2066 { 2067 u32 result; 2068 2069 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FNLOCK, &result); 2070 2071 return (result & ASUS_WMI_DSTS_PRESENCE_BIT) && 2072 !(result & ASUS_WMI_FNLOCK_BIOS_DISABLED); 2073 } 2074 2075 static void asus_wmi_fnlock_update(struct asus_wmi *asus) 2076 { 2077 int mode = asus->fnlock_locked; 2078 2079 asus_wmi_set_devstate(ASUS_WMI_DEVID_FNLOCK, mode, NULL); 2080 } 2081 2082 /* WMI events *****************************************************************/ 2083 2084 static int asus_wmi_get_event_code(u32 value) 2085 { 2086 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 2087 union acpi_object *obj; 2088 acpi_status status; 2089 int code; 2090 2091 status = wmi_get_event_data(value, &response); 2092 if (ACPI_FAILURE(status)) { 2093 pr_warn("Failed to get WMI notify code: %s\n", 2094 acpi_format_exception(status)); 2095 return -EIO; 2096 } 2097 2098 obj = (union acpi_object *)response.pointer; 2099 2100 if (obj && obj->type == ACPI_TYPE_INTEGER) 2101 code = (int)(obj->integer.value & WMI_EVENT_MASK); 2102 else 2103 code = -EIO; 2104 2105 kfree(obj); 2106 return code; 2107 } 2108 2109 static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus) 2110 { 2111 unsigned int key_value = 1; 2112 bool autorelease = 1; 2113 int result, orig_code; 2114 2115 orig_code = code; 2116 2117 if (asus->driver->key_filter) { 2118 asus->driver->key_filter(asus->driver, &code, &key_value, 2119 &autorelease); 2120 if (code == ASUS_WMI_KEY_IGNORE) 2121 return; 2122 } 2123 2124 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 2125 code = ASUS_WMI_BRN_UP; 2126 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 2127 code = ASUS_WMI_BRN_DOWN; 2128 2129 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) { 2130 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 2131 asus_wmi_backlight_notify(asus, orig_code); 2132 return; 2133 } 2134 } 2135 2136 if (code == NOTIFY_KBD_BRTUP) { 2137 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1); 2138 return; 2139 } 2140 if (code == NOTIFY_KBD_BRTDWN) { 2141 kbd_led_set_by_kbd(asus, asus->kbd_led_wk - 1); 2142 return; 2143 } 2144 if (code == NOTIFY_KBD_BRTTOGGLE) { 2145 if (asus->kbd_led_wk == asus->kbd_led.max_brightness) 2146 kbd_led_set_by_kbd(asus, 0); 2147 else 2148 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1); 2149 return; 2150 } 2151 2152 if (code == NOTIFY_FNLOCK_TOGGLE) { 2153 asus->fnlock_locked = !asus->fnlock_locked; 2154 asus_wmi_fnlock_update(asus); 2155 return; 2156 } 2157 2158 if (asus->driver->quirks->use_kbd_dock_devid && code == NOTIFY_KBD_DOCK_CHANGE) { 2159 result = asus_wmi_get_devstate_simple(asus, 2160 ASUS_WMI_DEVID_KBD_DOCK); 2161 if (result >= 0) { 2162 input_report_switch(asus->inputdev, SW_TABLET_MODE, 2163 !result); 2164 input_sync(asus->inputdev); 2165 } 2166 return; 2167 } 2168 2169 if (asus->driver->quirks->use_lid_flip_devid && code == NOTIFY_LID_FLIP) { 2170 lid_flip_tablet_mode_get_state(asus); 2171 return; 2172 } 2173 2174 if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) { 2175 fan_boost_mode_switch_next(asus); 2176 return; 2177 } 2178 2179 if (asus->throttle_thermal_policy_available && code == NOTIFY_KBD_TTP) { 2180 throttle_thermal_policy_switch_next(asus); 2181 return; 2182 } 2183 2184 if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle) 2185 return; 2186 2187 if (!sparse_keymap_report_event(asus->inputdev, code, 2188 key_value, autorelease)) 2189 pr_info("Unknown key %x pressed\n", code); 2190 } 2191 2192 static void asus_wmi_notify(u32 value, void *context) 2193 { 2194 struct asus_wmi *asus = context; 2195 int code; 2196 int i; 2197 2198 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) { 2199 code = asus_wmi_get_event_code(value); 2200 if (code < 0) { 2201 pr_warn("Failed to get notify code: %d\n", code); 2202 return; 2203 } 2204 2205 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK) 2206 return; 2207 2208 asus_wmi_handle_event_code(code, asus); 2209 2210 /* 2211 * Double check that queue is present: 2212 * ATK (with queue) uses 0xff, ASUSWMI (without) 0xd2. 2213 */ 2214 if (!asus->wmi_event_queue || value != WMI_EVENT_VALUE_ATK) 2215 return; 2216 } 2217 2218 pr_warn("Failed to process event queue, last code: 0x%x\n", code); 2219 } 2220 2221 static int asus_wmi_notify_queue_flush(struct asus_wmi *asus) 2222 { 2223 int code; 2224 int i; 2225 2226 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) { 2227 code = asus_wmi_get_event_code(WMI_EVENT_VALUE_ATK); 2228 if (code < 0) { 2229 pr_warn("Failed to get event during flush: %d\n", code); 2230 return code; 2231 } 2232 2233 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK) 2234 return 0; 2235 } 2236 2237 pr_warn("Failed to flush event queue\n"); 2238 return -EIO; 2239 } 2240 2241 /* Sysfs **********************************************************************/ 2242 2243 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid, 2244 const char *buf, size_t count) 2245 { 2246 u32 retval; 2247 int err, value; 2248 2249 value = asus_wmi_get_devstate_simple(asus, devid); 2250 if (value < 0) 2251 return value; 2252 2253 err = kstrtoint(buf, 0, &value); 2254 if (err) 2255 return err; 2256 2257 err = asus_wmi_set_devstate(devid, value, &retval); 2258 if (err < 0) 2259 return err; 2260 2261 return count; 2262 } 2263 2264 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf) 2265 { 2266 int value = asus_wmi_get_devstate_simple(asus, devid); 2267 2268 if (value < 0) 2269 return value; 2270 2271 return sprintf(buf, "%d\n", value); 2272 } 2273 2274 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ 2275 static ssize_t show_##_name(struct device *dev, \ 2276 struct device_attribute *attr, \ 2277 char *buf) \ 2278 { \ 2279 struct asus_wmi *asus = dev_get_drvdata(dev); \ 2280 \ 2281 return show_sys_wmi(asus, _cm, buf); \ 2282 } \ 2283 static ssize_t store_##_name(struct device *dev, \ 2284 struct device_attribute *attr, \ 2285 const char *buf, size_t count) \ 2286 { \ 2287 struct asus_wmi *asus = dev_get_drvdata(dev); \ 2288 \ 2289 return store_sys_wmi(asus, _cm, buf, count); \ 2290 } \ 2291 static struct device_attribute dev_attr_##_name = { \ 2292 .attr = { \ 2293 .name = __stringify(_name), \ 2294 .mode = _mode }, \ 2295 .show = show_##_name, \ 2296 .store = store_##_name, \ 2297 } 2298 2299 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD); 2300 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA); 2301 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER); 2302 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME); 2303 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE); 2304 2305 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr, 2306 const char *buf, size_t count) 2307 { 2308 int value, rv; 2309 2310 rv = kstrtoint(buf, 0, &value); 2311 if (rv) 2312 return rv; 2313 2314 if (value < 0 || value > 2) 2315 return -EINVAL; 2316 2317 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL); 2318 if (rv < 0) 2319 return rv; 2320 2321 return count; 2322 } 2323 2324 static DEVICE_ATTR_WO(cpufv); 2325 2326 static struct attribute *platform_attributes[] = { 2327 &dev_attr_cpufv.attr, 2328 &dev_attr_camera.attr, 2329 &dev_attr_cardr.attr, 2330 &dev_attr_touchpad.attr, 2331 &dev_attr_lid_resume.attr, 2332 &dev_attr_als_enable.attr, 2333 &dev_attr_fan_boost_mode.attr, 2334 &dev_attr_throttle_thermal_policy.attr, 2335 NULL 2336 }; 2337 2338 static umode_t asus_sysfs_is_visible(struct kobject *kobj, 2339 struct attribute *attr, int idx) 2340 { 2341 struct device *dev = container_of(kobj, struct device, kobj); 2342 struct asus_wmi *asus = dev_get_drvdata(dev); 2343 bool ok = true; 2344 int devid = -1; 2345 2346 if (attr == &dev_attr_camera.attr) 2347 devid = ASUS_WMI_DEVID_CAMERA; 2348 else if (attr == &dev_attr_cardr.attr) 2349 devid = ASUS_WMI_DEVID_CARDREADER; 2350 else if (attr == &dev_attr_touchpad.attr) 2351 devid = ASUS_WMI_DEVID_TOUCHPAD; 2352 else if (attr == &dev_attr_lid_resume.attr) 2353 devid = ASUS_WMI_DEVID_LID_RESUME; 2354 else if (attr == &dev_attr_als_enable.attr) 2355 devid = ASUS_WMI_DEVID_ALS_ENABLE; 2356 else if (attr == &dev_attr_fan_boost_mode.attr) 2357 ok = asus->fan_boost_mode_available; 2358 else if (attr == &dev_attr_throttle_thermal_policy.attr) 2359 ok = asus->throttle_thermal_policy_available; 2360 2361 if (devid != -1) 2362 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0); 2363 2364 return ok ? attr->mode : 0; 2365 } 2366 2367 static const struct attribute_group platform_attribute_group = { 2368 .is_visible = asus_sysfs_is_visible, 2369 .attrs = platform_attributes 2370 }; 2371 2372 static void asus_wmi_sysfs_exit(struct platform_device *device) 2373 { 2374 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); 2375 } 2376 2377 static int asus_wmi_sysfs_init(struct platform_device *device) 2378 { 2379 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); 2380 } 2381 2382 /* Platform device ************************************************************/ 2383 2384 static int asus_wmi_platform_init(struct asus_wmi *asus) 2385 { 2386 struct device *dev = &asus->platform_device->dev; 2387 char *wmi_uid; 2388 int rv; 2389 2390 /* INIT enable hotkeys on some models */ 2391 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv)) 2392 pr_info("Initialization: %#x\n", rv); 2393 2394 /* We don't know yet what to do with this version... */ 2395 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) { 2396 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF); 2397 asus->spec = rv; 2398 } 2399 2400 /* 2401 * The SFUN method probably allows the original driver to get the list 2402 * of features supported by a given model. For now, 0x0100 or 0x0800 2403 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 2404 * The significance of others is yet to be found. 2405 */ 2406 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) { 2407 pr_info("SFUN value: %#x\n", rv); 2408 asus->sfun = rv; 2409 } 2410 2411 /* 2412 * Eee PC and Notebooks seems to have different method_id for DSTS, 2413 * but it may also be related to the BIOS's SPEC. 2414 * Note, on most Eeepc, there is no way to check if a method exist 2415 * or note, while on notebooks, they returns 0xFFFFFFFE on failure, 2416 * but once again, SPEC may probably be used for that kind of things. 2417 * 2418 * Additionally at least TUF Gaming series laptops return nothing for 2419 * unknown methods, so the detection in this way is not possible. 2420 * 2421 * There is strong indication that only ACPI WMI devices that have _UID 2422 * equal to "ASUSWMI" use DCTS whereas those with "ATK" use DSTS. 2423 */ 2424 wmi_uid = wmi_get_acpi_device_uid(ASUS_WMI_MGMT_GUID); 2425 if (!wmi_uid) 2426 return -ENODEV; 2427 2428 if (!strcmp(wmi_uid, ASUS_ACPI_UID_ASUSWMI)) { 2429 dev_info(dev, "Detected ASUSWMI, use DCTS\n"); 2430 asus->dsts_id = ASUS_WMI_METHODID_DCTS; 2431 } else { 2432 dev_info(dev, "Detected %s, not ASUSWMI, use DSTS\n", wmi_uid); 2433 asus->dsts_id = ASUS_WMI_METHODID_DSTS; 2434 } 2435 2436 /* 2437 * Some devices can have multiple event codes stored in a queue before 2438 * the module load if it was unloaded intermittently after calling 2439 * the INIT method (enables event handling). The WMI notify handler is 2440 * expected to retrieve all event codes until a retrieved code equals 2441 * queue end marker (One or Ones). Old codes are flushed from the queue 2442 * upon module load. Not enabling this when it should be has minimal 2443 * visible impact so fall back if anything goes wrong. 2444 */ 2445 wmi_uid = wmi_get_acpi_device_uid(asus->driver->event_guid); 2446 if (wmi_uid && !strcmp(wmi_uid, ASUS_ACPI_UID_ATK)) { 2447 dev_info(dev, "Detected ATK, enable event queue\n"); 2448 2449 if (!asus_wmi_notify_queue_flush(asus)) 2450 asus->wmi_event_queue = true; 2451 } 2452 2453 /* CWAP allow to define the behavior of the Fn+F2 key, 2454 * this method doesn't seems to be present on Eee PCs */ 2455 if (asus->driver->quirks->wapf >= 0) 2456 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP, 2457 asus->driver->quirks->wapf, NULL); 2458 2459 return 0; 2460 } 2461 2462 /* debugfs ********************************************************************/ 2463 2464 struct asus_wmi_debugfs_node { 2465 struct asus_wmi *asus; 2466 char *name; 2467 int (*show) (struct seq_file *m, void *data); 2468 }; 2469 2470 static int show_dsts(struct seq_file *m, void *data) 2471 { 2472 struct asus_wmi *asus = m->private; 2473 int err; 2474 u32 retval = -1; 2475 2476 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval); 2477 if (err < 0) 2478 return err; 2479 2480 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval); 2481 2482 return 0; 2483 } 2484 2485 static int show_devs(struct seq_file *m, void *data) 2486 { 2487 struct asus_wmi *asus = m->private; 2488 int err; 2489 u32 retval = -1; 2490 2491 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param, 2492 &retval); 2493 if (err < 0) 2494 return err; 2495 2496 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id, 2497 asus->debug.ctrl_param, retval); 2498 2499 return 0; 2500 } 2501 2502 static int show_call(struct seq_file *m, void *data) 2503 { 2504 struct asus_wmi *asus = m->private; 2505 struct bios_args args = { 2506 .arg0 = asus->debug.dev_id, 2507 .arg1 = asus->debug.ctrl_param, 2508 }; 2509 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 2510 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 2511 union acpi_object *obj; 2512 acpi_status status; 2513 2514 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 2515 0, asus->debug.method_id, 2516 &input, &output); 2517 2518 if (ACPI_FAILURE(status)) 2519 return -EIO; 2520 2521 obj = (union acpi_object *)output.pointer; 2522 if (obj && obj->type == ACPI_TYPE_INTEGER) 2523 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id, 2524 asus->debug.dev_id, asus->debug.ctrl_param, 2525 (u32) obj->integer.value); 2526 else 2527 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id, 2528 asus->debug.dev_id, asus->debug.ctrl_param, 2529 obj ? obj->type : -1); 2530 2531 kfree(obj); 2532 2533 return 0; 2534 } 2535 2536 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = { 2537 {NULL, "devs", show_devs}, 2538 {NULL, "dsts", show_dsts}, 2539 {NULL, "call", show_call}, 2540 }; 2541 2542 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file) 2543 { 2544 struct asus_wmi_debugfs_node *node = inode->i_private; 2545 2546 return single_open(file, node->show, node->asus); 2547 } 2548 2549 static const struct file_operations asus_wmi_debugfs_io_ops = { 2550 .owner = THIS_MODULE, 2551 .open = asus_wmi_debugfs_open, 2552 .read = seq_read, 2553 .llseek = seq_lseek, 2554 .release = single_release, 2555 }; 2556 2557 static void asus_wmi_debugfs_exit(struct asus_wmi *asus) 2558 { 2559 debugfs_remove_recursive(asus->debug.root); 2560 } 2561 2562 static void asus_wmi_debugfs_init(struct asus_wmi *asus) 2563 { 2564 int i; 2565 2566 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL); 2567 2568 debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, asus->debug.root, 2569 &asus->debug.method_id); 2570 2571 debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, asus->debug.root, 2572 &asus->debug.dev_id); 2573 2574 debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, asus->debug.root, 2575 &asus->debug.ctrl_param); 2576 2577 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) { 2578 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i]; 2579 2580 node->asus = asus; 2581 debugfs_create_file(node->name, S_IFREG | S_IRUGO, 2582 asus->debug.root, node, 2583 &asus_wmi_debugfs_io_ops); 2584 } 2585 } 2586 2587 /* Init / exit ****************************************************************/ 2588 2589 static int asus_wmi_add(struct platform_device *pdev) 2590 { 2591 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2592 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2593 struct asus_wmi *asus; 2594 const char *chassis_type; 2595 acpi_status status; 2596 int err; 2597 u32 result; 2598 2599 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL); 2600 if (!asus) 2601 return -ENOMEM; 2602 2603 asus->driver = wdrv; 2604 asus->platform_device = pdev; 2605 wdrv->platform_device = pdev; 2606 platform_set_drvdata(asus->platform_device, asus); 2607 2608 if (wdrv->detect_quirks) 2609 wdrv->detect_quirks(asus->driver); 2610 2611 err = asus_wmi_platform_init(asus); 2612 if (err) 2613 goto fail_platform; 2614 2615 err = fan_boost_mode_check_present(asus); 2616 if (err) 2617 goto fail_fan_boost_mode; 2618 2619 err = throttle_thermal_policy_check_present(asus); 2620 if (err) 2621 goto fail_throttle_thermal_policy; 2622 else 2623 throttle_thermal_policy_set_default(asus); 2624 2625 err = asus_wmi_sysfs_init(asus->platform_device); 2626 if (err) 2627 goto fail_sysfs; 2628 2629 err = asus_wmi_input_init(asus); 2630 if (err) 2631 goto fail_input; 2632 2633 err = asus_wmi_fan_init(asus); /* probably no problems on error */ 2634 2635 err = asus_wmi_hwmon_init(asus); 2636 if (err) 2637 goto fail_hwmon; 2638 2639 err = asus_wmi_led_init(asus); 2640 if (err) 2641 goto fail_leds; 2642 2643 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result); 2644 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT)) 2645 asus->driver->wlan_ctrl_by_user = 1; 2646 2647 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) { 2648 err = asus_wmi_rfkill_init(asus); 2649 if (err) 2650 goto fail_rfkill; 2651 } 2652 2653 if (asus->driver->quirks->wmi_force_als_set) 2654 asus_wmi_set_als(); 2655 2656 /* Some Asus desktop boards export an acpi-video backlight interface, 2657 stop this from showing up */ 2658 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); 2659 if (chassis_type && !strcmp(chassis_type, "3")) 2660 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2661 2662 if (asus->driver->quirks->wmi_backlight_power) 2663 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2664 2665 if (asus->driver->quirks->wmi_backlight_native) 2666 acpi_video_set_dmi_backlight_type(acpi_backlight_native); 2667 2668 if (asus->driver->quirks->xusb2pr) 2669 asus_wmi_set_xusb2pr(asus); 2670 2671 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 2672 err = asus_wmi_backlight_init(asus); 2673 if (err && err != -ENODEV) 2674 goto fail_backlight; 2675 } else if (asus->driver->quirks->wmi_backlight_set_devstate) 2676 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL); 2677 2678 if (asus_wmi_has_fnlock_key(asus)) { 2679 asus->fnlock_locked = fnlock_default; 2680 asus_wmi_fnlock_update(asus); 2681 } 2682 2683 status = wmi_install_notify_handler(asus->driver->event_guid, 2684 asus_wmi_notify, asus); 2685 if (ACPI_FAILURE(status)) { 2686 pr_err("Unable to register notify handler - %d\n", status); 2687 err = -ENODEV; 2688 goto fail_wmi_handler; 2689 } 2690 2691 asus_wmi_battery_init(asus); 2692 2693 asus_wmi_debugfs_init(asus); 2694 2695 return 0; 2696 2697 fail_wmi_handler: 2698 asus_wmi_backlight_exit(asus); 2699 fail_backlight: 2700 asus_wmi_rfkill_exit(asus); 2701 fail_rfkill: 2702 asus_wmi_led_exit(asus); 2703 fail_leds: 2704 fail_hwmon: 2705 asus_wmi_input_exit(asus); 2706 fail_input: 2707 asus_wmi_sysfs_exit(asus->platform_device); 2708 fail_sysfs: 2709 fail_throttle_thermal_policy: 2710 fail_fan_boost_mode: 2711 fail_platform: 2712 kfree(asus); 2713 return err; 2714 } 2715 2716 static int asus_wmi_remove(struct platform_device *device) 2717 { 2718 struct asus_wmi *asus; 2719 2720 asus = platform_get_drvdata(device); 2721 wmi_remove_notify_handler(asus->driver->event_guid); 2722 asus_wmi_backlight_exit(asus); 2723 asus_wmi_input_exit(asus); 2724 asus_wmi_led_exit(asus); 2725 asus_wmi_rfkill_exit(asus); 2726 asus_wmi_debugfs_exit(asus); 2727 asus_wmi_sysfs_exit(asus->platform_device); 2728 asus_fan_set_auto(asus); 2729 asus_wmi_battery_exit(asus); 2730 2731 kfree(asus); 2732 return 0; 2733 } 2734 2735 /* Platform driver - hibernate/resume callbacks *******************************/ 2736 2737 static int asus_hotk_thaw(struct device *device) 2738 { 2739 struct asus_wmi *asus = dev_get_drvdata(device); 2740 2741 if (asus->wlan.rfkill) { 2742 bool wlan; 2743 2744 /* 2745 * Work around bios bug - acpi _PTS turns off the wireless led 2746 * during suspend. Normally it restores it on resume, but 2747 * we should kick it ourselves in case hibernation is aborted. 2748 */ 2749 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 2750 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL); 2751 } 2752 2753 return 0; 2754 } 2755 2756 static int asus_hotk_resume(struct device *device) 2757 { 2758 struct asus_wmi *asus = dev_get_drvdata(device); 2759 2760 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2761 kbd_led_update(asus); 2762 2763 if (asus_wmi_has_fnlock_key(asus)) 2764 asus_wmi_fnlock_update(asus); 2765 2766 if (asus->driver->quirks->use_lid_flip_devid) 2767 lid_flip_tablet_mode_get_state(asus); 2768 2769 return 0; 2770 } 2771 2772 static int asus_hotk_restore(struct device *device) 2773 { 2774 struct asus_wmi *asus = dev_get_drvdata(device); 2775 int bl; 2776 2777 /* Refresh both wlan rfkill state and pci hotplug */ 2778 if (asus->wlan.rfkill) 2779 asus_rfkill_hotplug(asus); 2780 2781 if (asus->bluetooth.rfkill) { 2782 bl = !asus_wmi_get_devstate_simple(asus, 2783 ASUS_WMI_DEVID_BLUETOOTH); 2784 rfkill_set_sw_state(asus->bluetooth.rfkill, bl); 2785 } 2786 if (asus->wimax.rfkill) { 2787 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX); 2788 rfkill_set_sw_state(asus->wimax.rfkill, bl); 2789 } 2790 if (asus->wwan3g.rfkill) { 2791 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G); 2792 rfkill_set_sw_state(asus->wwan3g.rfkill, bl); 2793 } 2794 if (asus->gps.rfkill) { 2795 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS); 2796 rfkill_set_sw_state(asus->gps.rfkill, bl); 2797 } 2798 if (asus->uwb.rfkill) { 2799 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB); 2800 rfkill_set_sw_state(asus->uwb.rfkill, bl); 2801 } 2802 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2803 kbd_led_update(asus); 2804 2805 if (asus_wmi_has_fnlock_key(asus)) 2806 asus_wmi_fnlock_update(asus); 2807 2808 if (asus->driver->quirks->use_lid_flip_devid) 2809 lid_flip_tablet_mode_get_state(asus); 2810 2811 return 0; 2812 } 2813 2814 static const struct dev_pm_ops asus_pm_ops = { 2815 .thaw = asus_hotk_thaw, 2816 .restore = asus_hotk_restore, 2817 .resume = asus_hotk_resume, 2818 }; 2819 2820 /* Registration ***************************************************************/ 2821 2822 static int asus_wmi_probe(struct platform_device *pdev) 2823 { 2824 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2825 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2826 int ret; 2827 2828 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 2829 pr_warn("ASUS Management GUID not found\n"); 2830 return -ENODEV; 2831 } 2832 2833 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) { 2834 pr_warn("ASUS Event GUID not found\n"); 2835 return -ENODEV; 2836 } 2837 2838 if (wdrv->probe) { 2839 ret = wdrv->probe(pdev); 2840 if (ret) 2841 return ret; 2842 } 2843 2844 return asus_wmi_add(pdev); 2845 } 2846 2847 static bool used; 2848 2849 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver) 2850 { 2851 struct platform_driver *platform_driver; 2852 struct platform_device *platform_device; 2853 2854 if (used) 2855 return -EBUSY; 2856 2857 platform_driver = &driver->platform_driver; 2858 platform_driver->remove = asus_wmi_remove; 2859 platform_driver->driver.owner = driver->owner; 2860 platform_driver->driver.name = driver->name; 2861 platform_driver->driver.pm = &asus_pm_ops; 2862 2863 platform_device = platform_create_bundle(platform_driver, 2864 asus_wmi_probe, 2865 NULL, 0, NULL, 0); 2866 if (IS_ERR(platform_device)) 2867 return PTR_ERR(platform_device); 2868 2869 used = true; 2870 return 0; 2871 } 2872 EXPORT_SYMBOL_GPL(asus_wmi_register_driver); 2873 2874 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver) 2875 { 2876 platform_device_unregister(driver->platform_device); 2877 platform_driver_unregister(&driver->platform_driver); 2878 used = false; 2879 } 2880 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver); 2881 2882 static int __init asus_wmi_init(void) 2883 { 2884 pr_info("ASUS WMI generic driver loaded\n"); 2885 return 0; 2886 } 2887 2888 static void __exit asus_wmi_exit(void) 2889 { 2890 pr_info("ASUS WMI generic driver unloaded\n"); 2891 } 2892 2893 module_init(asus_wmi_init); 2894 module_exit(asus_wmi_exit); 2895