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/acpi.h> 17 #include <linux/backlight.h> 18 #include <linux/debugfs.h> 19 #include <linux/dmi.h> 20 #include <linux/fb.h> 21 #include <linux/hwmon.h> 22 #include <linux/hwmon-sysfs.h> 23 #include <linux/init.h> 24 #include <linux/input.h> 25 #include <linux/input/sparse-keymap.h> 26 #include <linux/kernel.h> 27 #include <linux/leds.h> 28 #include <linux/module.h> 29 #include <linux/pci.h> 30 #include <linux/pci_hotplug.h> 31 #include <linux/platform_data/x86/asus-wmi.h> 32 #include <linux/platform_device.h> 33 #include <linux/platform_profile.h> 34 #include <linux/power_supply.h> 35 #include <linux/rfkill.h> 36 #include <linux/seq_file.h> 37 #include <linux/slab.h> 38 #include <linux/types.h> 39 #include <linux/units.h> 40 41 #include <acpi/battery.h> 42 #include <acpi/video.h> 43 44 #include "asus-wmi.h" 45 46 MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>"); 47 MODULE_AUTHOR("Yong Wang <yong.y.wang@intel.com>"); 48 MODULE_DESCRIPTION("Asus Generic WMI Driver"); 49 MODULE_LICENSE("GPL"); 50 51 static bool fnlock_default = true; 52 module_param(fnlock_default, bool, 0444); 53 54 #define to_asus_wmi_driver(pdrv) \ 55 (container_of((pdrv), struct asus_wmi_driver, platform_driver)) 56 57 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66" 58 59 #define NOTIFY_BRNUP_MIN 0x11 60 #define NOTIFY_BRNUP_MAX 0x1f 61 #define NOTIFY_BRNDOWN_MIN 0x20 62 #define NOTIFY_BRNDOWN_MAX 0x2e 63 #define NOTIFY_FNLOCK_TOGGLE 0x4e 64 #define NOTIFY_KBD_DOCK_CHANGE 0x75 65 #define NOTIFY_KBD_BRTUP 0xc4 66 #define NOTIFY_KBD_BRTDWN 0xc5 67 #define NOTIFY_KBD_BRTTOGGLE 0xc7 68 #define NOTIFY_KBD_FBM 0x99 69 #define NOTIFY_KBD_TTP 0xae 70 #define NOTIFY_LID_FLIP 0xfa 71 72 #define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0) 73 74 #define ASUS_FAN_DESC "cpu_fan" 75 #define ASUS_FAN_MFUN 0x13 76 #define ASUS_FAN_SFUN_READ 0x06 77 #define ASUS_FAN_SFUN_WRITE 0x07 78 79 /* Based on standard hwmon pwmX_enable values */ 80 #define ASUS_FAN_CTRL_FULLSPEED 0 81 #define ASUS_FAN_CTRL_MANUAL 1 82 #define ASUS_FAN_CTRL_AUTO 2 83 84 #define ASUS_FAN_BOOST_MODE_NORMAL 0 85 #define ASUS_FAN_BOOST_MODE_OVERBOOST 1 86 #define ASUS_FAN_BOOST_MODE_OVERBOOST_MASK 0x01 87 #define ASUS_FAN_BOOST_MODE_SILENT 2 88 #define ASUS_FAN_BOOST_MODE_SILENT_MASK 0x02 89 #define ASUS_FAN_BOOST_MODES_MASK 0x03 90 91 #define ASUS_THROTTLE_THERMAL_POLICY_DEFAULT 0 92 #define ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST 1 93 #define ASUS_THROTTLE_THERMAL_POLICY_SILENT 2 94 95 #define USB_INTEL_XUSB2PR 0xD0 96 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31 97 98 #define ASUS_ACPI_UID_ASUSWMI "ASUSWMI" 99 #define ASUS_ACPI_UID_ATK "ATK" 100 101 #define WMI_EVENT_QUEUE_SIZE 0x10 102 #define WMI_EVENT_QUEUE_END 0x1 103 #define WMI_EVENT_MASK 0xFFFF 104 /* The WMI hotkey event value is always the same. */ 105 #define WMI_EVENT_VALUE_ATK 0xFF 106 107 #define WMI_EVENT_MASK 0xFFFF 108 109 #define FAN_CURVE_POINTS 8 110 #define FAN_CURVE_BUF_LEN (FAN_CURVE_POINTS * 2) 111 #define FAN_CURVE_DEV_CPU 0x00 112 #define FAN_CURVE_DEV_GPU 0x01 113 /* Mask to determine if setting temperature or percentage */ 114 #define FAN_CURVE_PWM_MASK 0x04 115 116 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL }; 117 118 static int throttle_thermal_policy_write(struct asus_wmi *); 119 120 static bool ashs_present(void) 121 { 122 int i = 0; 123 while (ashs_ids[i]) { 124 if (acpi_dev_found(ashs_ids[i++])) 125 return true; 126 } 127 return false; 128 } 129 130 struct bios_args { 131 u32 arg0; 132 u32 arg1; 133 u32 arg2; /* At least TUF Gaming series uses 3 dword input buffer. */ 134 u32 arg3; 135 u32 arg4; /* Some ROG laptops require a full 5 input args */ 136 u32 arg5; 137 } __packed; 138 139 /* 140 * Struct that's used for all methods called via AGFN. Naming is 141 * identically to the AML code. 142 */ 143 struct agfn_args { 144 u16 mfun; /* probably "Multi-function" to be called */ 145 u16 sfun; /* probably "Sub-function" to be called */ 146 u16 len; /* size of the hole struct, including subfunction fields */ 147 u8 stas; /* not used by now */ 148 u8 err; /* zero on success */ 149 } __packed; 150 151 /* struct used for calling fan read and write methods */ 152 struct agfn_fan_args { 153 struct agfn_args agfn; /* common fields */ 154 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */ 155 u32 speed; /* read: RPM/100 - write: 0-255 */ 156 } __packed; 157 158 /* 159 * <platform>/ - debugfs root directory 160 * dev_id - current dev_id 161 * ctrl_param - current ctrl_param 162 * method_id - current method_id 163 * devs - call DEVS(dev_id, ctrl_param) and print result 164 * dsts - call DSTS(dev_id) and print result 165 * call - call method_id(dev_id, ctrl_param) and print result 166 */ 167 struct asus_wmi_debug { 168 struct dentry *root; 169 u32 method_id; 170 u32 dev_id; 171 u32 ctrl_param; 172 }; 173 174 struct asus_rfkill { 175 struct asus_wmi *asus; 176 struct rfkill *rfkill; 177 u32 dev_id; 178 }; 179 180 enum fan_type { 181 FAN_TYPE_NONE = 0, 182 FAN_TYPE_AGFN, /* deprecated on newer platforms */ 183 FAN_TYPE_SPEC83, /* starting in Spec 8.3, use CPU_FAN_CTRL */ 184 }; 185 186 struct fan_curve_data { 187 bool enabled; 188 u32 device_id; 189 u8 temps[FAN_CURVE_POINTS]; 190 u8 percents[FAN_CURVE_POINTS]; 191 }; 192 193 struct asus_wmi { 194 int dsts_id; 195 int spec; 196 int sfun; 197 bool wmi_event_queue; 198 199 struct input_dev *inputdev; 200 struct backlight_device *backlight_device; 201 struct platform_device *platform_device; 202 203 struct led_classdev wlan_led; 204 int wlan_led_wk; 205 struct led_classdev tpd_led; 206 int tpd_led_wk; 207 struct led_classdev kbd_led; 208 int kbd_led_wk; 209 struct led_classdev lightbar_led; 210 int lightbar_led_wk; 211 struct workqueue_struct *led_workqueue; 212 struct work_struct tpd_led_work; 213 struct work_struct wlan_led_work; 214 struct work_struct lightbar_led_work; 215 216 struct asus_rfkill wlan; 217 struct asus_rfkill bluetooth; 218 struct asus_rfkill wimax; 219 struct asus_rfkill wwan3g; 220 struct asus_rfkill gps; 221 struct asus_rfkill uwb; 222 223 enum fan_type fan_type; 224 int fan_pwm_mode; 225 int agfn_pwm; 226 227 bool fan_boost_mode_available; 228 u8 fan_boost_mode_mask; 229 u8 fan_boost_mode; 230 231 bool egpu_enable_available; // 0 = enable 232 bool egpu_enable; 233 234 bool dgpu_disable_available; 235 bool dgpu_disable; 236 237 bool throttle_thermal_policy_available; 238 u8 throttle_thermal_policy_mode; 239 240 bool cpu_fan_curve_available; 241 bool gpu_fan_curve_available; 242 struct fan_curve_data custom_fan_curves[2]; 243 244 struct platform_profile_handler platform_profile_handler; 245 bool platform_profile_support; 246 247 // The RSOC controls the maximum charging percentage. 248 bool battery_rsoc_available; 249 250 bool panel_overdrive_available; 251 bool panel_overdrive; 252 253 struct hotplug_slot hotplug_slot; 254 struct mutex hotplug_lock; 255 struct mutex wmi_lock; 256 struct workqueue_struct *hotplug_workqueue; 257 struct work_struct hotplug_work; 258 259 bool fnlock_locked; 260 261 struct asus_wmi_debug debug; 262 263 struct asus_wmi_driver *driver; 264 }; 265 266 /* WMI ************************************************************************/ 267 268 static int asus_wmi_evaluate_method3(u32 method_id, 269 u32 arg0, u32 arg1, u32 arg2, u32 *retval) 270 { 271 struct bios_args args = { 272 .arg0 = arg0, 273 .arg1 = arg1, 274 .arg2 = arg2, 275 }; 276 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 277 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 278 acpi_status status; 279 union acpi_object *obj; 280 u32 tmp = 0; 281 282 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id, 283 &input, &output); 284 285 if (ACPI_FAILURE(status)) 286 return -EIO; 287 288 obj = (union acpi_object *)output.pointer; 289 if (obj && obj->type == ACPI_TYPE_INTEGER) 290 tmp = (u32) obj->integer.value; 291 292 if (retval) 293 *retval = tmp; 294 295 kfree(obj); 296 297 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD) 298 return -ENODEV; 299 300 return 0; 301 } 302 303 int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval) 304 { 305 return asus_wmi_evaluate_method3(method_id, arg0, arg1, 0, retval); 306 } 307 EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method); 308 309 static int asus_wmi_evaluate_method5(u32 method_id, 310 u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4, u32 *retval) 311 { 312 struct bios_args args = { 313 .arg0 = arg0, 314 .arg1 = arg1, 315 .arg2 = arg2, 316 .arg3 = arg3, 317 .arg4 = arg4, 318 }; 319 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 320 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 321 acpi_status status; 322 union acpi_object *obj; 323 u32 tmp = 0; 324 325 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id, 326 &input, &output); 327 328 if (ACPI_FAILURE(status)) 329 return -EIO; 330 331 obj = (union acpi_object *)output.pointer; 332 if (obj && obj->type == ACPI_TYPE_INTEGER) 333 tmp = (u32) obj->integer.value; 334 335 if (retval) 336 *retval = tmp; 337 338 kfree(obj); 339 340 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD) 341 return -ENODEV; 342 343 return 0; 344 } 345 346 /* 347 * Returns as an error if the method output is not a buffer. Typically this 348 * means that the method called is unsupported. 349 */ 350 static int asus_wmi_evaluate_method_buf(u32 method_id, 351 u32 arg0, u32 arg1, u8 *ret_buffer, size_t size) 352 { 353 struct bios_args args = { 354 .arg0 = arg0, 355 .arg1 = arg1, 356 .arg2 = 0, 357 }; 358 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 359 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 360 acpi_status status; 361 union acpi_object *obj; 362 int err = 0; 363 364 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id, 365 &input, &output); 366 367 if (ACPI_FAILURE(status)) 368 return -EIO; 369 370 obj = (union acpi_object *)output.pointer; 371 372 switch (obj->type) { 373 case ACPI_TYPE_BUFFER: 374 if (obj->buffer.length > size) 375 err = -ENOSPC; 376 if (obj->buffer.length == 0) 377 err = -ENODATA; 378 379 memcpy(ret_buffer, obj->buffer.pointer, obj->buffer.length); 380 break; 381 case ACPI_TYPE_INTEGER: 382 err = (u32)obj->integer.value; 383 384 if (err == ASUS_WMI_UNSUPPORTED_METHOD) 385 err = -ENODEV; 386 /* 387 * At least one method returns a 0 with no buffer if no arg 388 * is provided, such as ASUS_WMI_DEVID_CPU_FAN_CURVE 389 */ 390 if (err == 0) 391 err = -ENODATA; 392 break; 393 default: 394 err = -ENODATA; 395 break; 396 } 397 398 kfree(obj); 399 400 if (err) 401 return err; 402 403 return 0; 404 } 405 406 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args) 407 { 408 struct acpi_buffer input; 409 u64 phys_addr; 410 u32 retval; 411 u32 status; 412 413 /* 414 * Copy to dma capable address otherwise memory corruption occurs as 415 * bios has to be able to access it. 416 */ 417 input.pointer = kmemdup(args.pointer, args.length, GFP_DMA | GFP_KERNEL); 418 input.length = args.length; 419 if (!input.pointer) 420 return -ENOMEM; 421 phys_addr = virt_to_phys(input.pointer); 422 423 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN, 424 phys_addr, 0, &retval); 425 if (!status) 426 memcpy(args.pointer, input.pointer, args.length); 427 428 kfree(input.pointer); 429 if (status) 430 return -ENXIO; 431 432 return retval; 433 } 434 435 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval) 436 { 437 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval); 438 } 439 440 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, 441 u32 *retval) 442 { 443 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id, 444 ctrl_param, retval); 445 } 446 447 /* Helper for special devices with magic return codes */ 448 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus, 449 u32 dev_id, u32 mask) 450 { 451 u32 retval = 0; 452 int err; 453 454 err = asus_wmi_get_devstate(asus, dev_id, &retval); 455 if (err < 0) 456 return err; 457 458 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT)) 459 return -ENODEV; 460 461 if (mask == ASUS_WMI_DSTS_STATUS_BIT) { 462 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT) 463 return -ENODEV; 464 } 465 466 return retval & mask; 467 } 468 469 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id) 470 { 471 return asus_wmi_get_devstate_bits(asus, dev_id, 472 ASUS_WMI_DSTS_STATUS_BIT); 473 } 474 475 static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id) 476 { 477 u32 retval; 478 int status = asus_wmi_get_devstate(asus, dev_id, &retval); 479 480 return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT); 481 } 482 483 /* Input **********************************************************************/ 484 485 static int asus_wmi_input_init(struct asus_wmi *asus) 486 { 487 int err, result; 488 489 asus->inputdev = input_allocate_device(); 490 if (!asus->inputdev) 491 return -ENOMEM; 492 493 asus->inputdev->name = asus->driver->input_name; 494 asus->inputdev->phys = asus->driver->input_phys; 495 asus->inputdev->id.bustype = BUS_HOST; 496 asus->inputdev->dev.parent = &asus->platform_device->dev; 497 set_bit(EV_REP, asus->inputdev->evbit); 498 499 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL); 500 if (err) 501 goto err_free_dev; 502 503 if (asus->driver->quirks->use_kbd_dock_devid) { 504 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_KBD_DOCK); 505 if (result >= 0) { 506 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE); 507 input_report_switch(asus->inputdev, SW_TABLET_MODE, !result); 508 } else if (result != -ENODEV) { 509 pr_err("Error checking for keyboard-dock: %d\n", result); 510 } 511 } 512 513 if (asus->driver->quirks->use_lid_flip_devid) { 514 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP); 515 if (result < 0) 516 asus->driver->quirks->use_lid_flip_devid = 0; 517 if (result >= 0) { 518 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE); 519 input_report_switch(asus->inputdev, SW_TABLET_MODE, result); 520 } else if (result == -ENODEV) { 521 pr_err("This device has lid_flip quirk but got ENODEV checking it. This is a bug."); 522 } else { 523 pr_err("Error checking for lid-flip: %d\n", result); 524 } 525 } 526 527 err = input_register_device(asus->inputdev); 528 if (err) 529 goto err_free_dev; 530 531 return 0; 532 533 err_free_dev: 534 input_free_device(asus->inputdev); 535 return err; 536 } 537 538 static void asus_wmi_input_exit(struct asus_wmi *asus) 539 { 540 if (asus->inputdev) 541 input_unregister_device(asus->inputdev); 542 543 asus->inputdev = NULL; 544 } 545 546 /* Tablet mode ****************************************************************/ 547 548 static void lid_flip_tablet_mode_get_state(struct asus_wmi *asus) 549 { 550 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP); 551 552 if (result >= 0) { 553 input_report_switch(asus->inputdev, SW_TABLET_MODE, result); 554 input_sync(asus->inputdev); 555 } 556 } 557 558 /* dGPU ********************************************************************/ 559 static int dgpu_disable_check_present(struct asus_wmi *asus) 560 { 561 u32 result; 562 int err; 563 564 asus->dgpu_disable_available = false; 565 566 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_DGPU, &result); 567 if (err) { 568 if (err == -ENODEV) 569 return 0; 570 return err; 571 } 572 573 if (result & ASUS_WMI_DSTS_PRESENCE_BIT) { 574 asus->dgpu_disable_available = true; 575 asus->dgpu_disable = result & ASUS_WMI_DSTS_STATUS_BIT; 576 } 577 578 return 0; 579 } 580 581 static int dgpu_disable_write(struct asus_wmi *asus) 582 { 583 u32 retval; 584 u8 value; 585 int err; 586 587 /* Don't rely on type conversion */ 588 value = asus->dgpu_disable ? 1 : 0; 589 590 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_DGPU, value, &retval); 591 if (err) { 592 pr_warn("Failed to set dgpu disable: %d\n", err); 593 return err; 594 } 595 596 if (retval > 1) { 597 pr_warn("Failed to set dgpu disable (retval): 0x%x\n", retval); 598 return -EIO; 599 } 600 601 sysfs_notify(&asus->platform_device->dev.kobj, NULL, "dgpu_disable"); 602 603 return 0; 604 } 605 606 static ssize_t dgpu_disable_show(struct device *dev, 607 struct device_attribute *attr, char *buf) 608 { 609 struct asus_wmi *asus = dev_get_drvdata(dev); 610 u8 mode = asus->dgpu_disable; 611 612 return sysfs_emit(buf, "%d\n", mode); 613 } 614 615 /* 616 * A user may be required to store the value twice, typcial store first, then 617 * rescan PCI bus to activate power, then store a second time to save correctly. 618 * The reason for this is that an extra code path in the ACPI is enabled when 619 * the device and bus are powered. 620 */ 621 static ssize_t dgpu_disable_store(struct device *dev, 622 struct device_attribute *attr, 623 const char *buf, size_t count) 624 { 625 bool disable; 626 int result; 627 628 struct asus_wmi *asus = dev_get_drvdata(dev); 629 630 result = kstrtobool(buf, &disable); 631 if (result) 632 return result; 633 634 asus->dgpu_disable = disable; 635 636 result = dgpu_disable_write(asus); 637 if (result) 638 return result; 639 640 return count; 641 } 642 643 static DEVICE_ATTR_RW(dgpu_disable); 644 645 /* eGPU ********************************************************************/ 646 static int egpu_enable_check_present(struct asus_wmi *asus) 647 { 648 u32 result; 649 int err; 650 651 asus->egpu_enable_available = false; 652 653 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_EGPU, &result); 654 if (err) { 655 if (err == -ENODEV) 656 return 0; 657 return err; 658 } 659 660 if (result & ASUS_WMI_DSTS_PRESENCE_BIT) { 661 asus->egpu_enable_available = true; 662 asus->egpu_enable = result & ASUS_WMI_DSTS_STATUS_BIT; 663 } 664 665 return 0; 666 } 667 668 static int egpu_enable_write(struct asus_wmi *asus) 669 { 670 u32 retval; 671 u8 value; 672 int err; 673 674 /* Don't rely on type conversion */ 675 value = asus->egpu_enable ? 1 : 0; 676 677 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_EGPU, value, &retval); 678 679 if (err) { 680 pr_warn("Failed to set egpu disable: %d\n", err); 681 return err; 682 } 683 684 if (retval > 1) { 685 pr_warn("Failed to set egpu disable (retval): 0x%x\n", retval); 686 return -EIO; 687 } 688 689 sysfs_notify(&asus->platform_device->dev.kobj, NULL, "egpu_enable"); 690 691 return 0; 692 } 693 694 static ssize_t egpu_enable_show(struct device *dev, 695 struct device_attribute *attr, char *buf) 696 { 697 struct asus_wmi *asus = dev_get_drvdata(dev); 698 bool mode = asus->egpu_enable; 699 700 return sysfs_emit(buf, "%d\n", mode); 701 } 702 703 /* The ACPI call to enable the eGPU also disables the internal dGPU */ 704 static ssize_t egpu_enable_store(struct device *dev, 705 struct device_attribute *attr, 706 const char *buf, size_t count) 707 { 708 bool enable; 709 int result; 710 711 struct asus_wmi *asus = dev_get_drvdata(dev); 712 713 result = kstrtobool(buf, &enable); 714 if (result) 715 return result; 716 717 asus->egpu_enable = enable; 718 719 result = egpu_enable_write(asus); 720 if (result) 721 return result; 722 723 /* Ensure that the kernel status of dgpu is updated */ 724 result = dgpu_disable_check_present(asus); 725 if (result) 726 return result; 727 728 return count; 729 } 730 731 static DEVICE_ATTR_RW(egpu_enable); 732 733 /* Battery ********************************************************************/ 734 735 /* The battery maximum charging percentage */ 736 static int charge_end_threshold; 737 738 static ssize_t charge_control_end_threshold_store(struct device *dev, 739 struct device_attribute *attr, 740 const char *buf, size_t count) 741 { 742 int value, ret, rv; 743 744 ret = kstrtouint(buf, 10, &value); 745 if (ret) 746 return ret; 747 748 if (value < 0 || value > 100) 749 return -EINVAL; 750 751 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv); 752 if (ret) 753 return ret; 754 755 if (rv != 1) 756 return -EIO; 757 758 /* There isn't any method in the DSDT to read the threshold, so we 759 * save the threshold. 760 */ 761 charge_end_threshold = value; 762 return count; 763 } 764 765 static ssize_t charge_control_end_threshold_show(struct device *device, 766 struct device_attribute *attr, 767 char *buf) 768 { 769 return sprintf(buf, "%d\n", charge_end_threshold); 770 } 771 772 static DEVICE_ATTR_RW(charge_control_end_threshold); 773 774 static int asus_wmi_battery_add(struct power_supply *battery) 775 { 776 /* The WMI method does not provide a way to specific a battery, so we 777 * just assume it is the first battery. 778 * Note: On some newer ASUS laptops (Zenbook UM431DA), the primary/first 779 * battery is named BATT. 780 */ 781 if (strcmp(battery->desc->name, "BAT0") != 0 && 782 strcmp(battery->desc->name, "BAT1") != 0 && 783 strcmp(battery->desc->name, "BATC") != 0 && 784 strcmp(battery->desc->name, "BATT") != 0) 785 return -ENODEV; 786 787 if (device_create_file(&battery->dev, 788 &dev_attr_charge_control_end_threshold)) 789 return -ENODEV; 790 791 /* The charge threshold is only reset when the system is power cycled, 792 * and we can't get the current threshold so let set it to 100% when 793 * a battery is added. 794 */ 795 asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL); 796 charge_end_threshold = 100; 797 798 return 0; 799 } 800 801 static int asus_wmi_battery_remove(struct power_supply *battery) 802 { 803 device_remove_file(&battery->dev, 804 &dev_attr_charge_control_end_threshold); 805 return 0; 806 } 807 808 static struct acpi_battery_hook battery_hook = { 809 .add_battery = asus_wmi_battery_add, 810 .remove_battery = asus_wmi_battery_remove, 811 .name = "ASUS Battery Extension", 812 }; 813 814 static void asus_wmi_battery_init(struct asus_wmi *asus) 815 { 816 asus->battery_rsoc_available = false; 817 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) { 818 asus->battery_rsoc_available = true; 819 battery_hook_register(&battery_hook); 820 } 821 } 822 823 static void asus_wmi_battery_exit(struct asus_wmi *asus) 824 { 825 if (asus->battery_rsoc_available) 826 battery_hook_unregister(&battery_hook); 827 } 828 829 /* LEDs ***********************************************************************/ 830 831 /* 832 * These functions actually update the LED's, and are called from a 833 * workqueue. By doing this as separate work rather than when the LED 834 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 835 * potentially bad time, such as a timer interrupt. 836 */ 837 static void tpd_led_update(struct work_struct *work) 838 { 839 int ctrl_param; 840 struct asus_wmi *asus; 841 842 asus = container_of(work, struct asus_wmi, tpd_led_work); 843 844 ctrl_param = asus->tpd_led_wk; 845 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL); 846 } 847 848 static void tpd_led_set(struct led_classdev *led_cdev, 849 enum led_brightness value) 850 { 851 struct asus_wmi *asus; 852 853 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 854 855 asus->tpd_led_wk = !!value; 856 queue_work(asus->led_workqueue, &asus->tpd_led_work); 857 } 858 859 static int read_tpd_led_state(struct asus_wmi *asus) 860 { 861 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED); 862 } 863 864 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) 865 { 866 struct asus_wmi *asus; 867 868 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 869 870 return read_tpd_led_state(asus); 871 } 872 873 static void kbd_led_update(struct asus_wmi *asus) 874 { 875 int ctrl_param = 0; 876 877 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F); 878 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL); 879 } 880 881 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env) 882 { 883 int retval; 884 885 /* 886 * bits 0-2: level 887 * bit 7: light on/off 888 * bit 8-10: environment (0: dark, 1: normal, 2: light) 889 * bit 17: status unknown 890 */ 891 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT, 892 0xFFFF); 893 894 /* Unknown status is considered as off */ 895 if (retval == 0x8000) 896 retval = 0; 897 898 if (retval < 0) 899 return retval; 900 901 if (level) 902 *level = retval & 0x7F; 903 if (env) 904 *env = (retval >> 8) & 0x7F; 905 return 0; 906 } 907 908 static void do_kbd_led_set(struct led_classdev *led_cdev, int value) 909 { 910 struct asus_wmi *asus; 911 int max_level; 912 913 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 914 max_level = asus->kbd_led.max_brightness; 915 916 asus->kbd_led_wk = clamp_val(value, 0, max_level); 917 kbd_led_update(asus); 918 } 919 920 static void kbd_led_set(struct led_classdev *led_cdev, 921 enum led_brightness value) 922 { 923 /* Prevent disabling keyboard backlight on module unregister */ 924 if (led_cdev->flags & LED_UNREGISTERING) 925 return; 926 927 do_kbd_led_set(led_cdev, value); 928 } 929 930 static void kbd_led_set_by_kbd(struct asus_wmi *asus, enum led_brightness value) 931 { 932 struct led_classdev *led_cdev = &asus->kbd_led; 933 934 do_kbd_led_set(led_cdev, value); 935 led_classdev_notify_brightness_hw_changed(led_cdev, asus->kbd_led_wk); 936 } 937 938 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev) 939 { 940 struct asus_wmi *asus; 941 int retval, value; 942 943 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 944 945 retval = kbd_led_read(asus, &value, NULL); 946 if (retval < 0) 947 return retval; 948 949 return value; 950 } 951 952 static int wlan_led_unknown_state(struct asus_wmi *asus) 953 { 954 u32 result; 955 956 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 957 958 return result & ASUS_WMI_DSTS_UNKNOWN_BIT; 959 } 960 961 static void wlan_led_update(struct work_struct *work) 962 { 963 int ctrl_param; 964 struct asus_wmi *asus; 965 966 asus = container_of(work, struct asus_wmi, wlan_led_work); 967 968 ctrl_param = asus->wlan_led_wk; 969 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL); 970 } 971 972 static void wlan_led_set(struct led_classdev *led_cdev, 973 enum led_brightness value) 974 { 975 struct asus_wmi *asus; 976 977 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 978 979 asus->wlan_led_wk = !!value; 980 queue_work(asus->led_workqueue, &asus->wlan_led_work); 981 } 982 983 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev) 984 { 985 struct asus_wmi *asus; 986 u32 result; 987 988 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 989 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 990 991 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 992 } 993 994 static void lightbar_led_update(struct work_struct *work) 995 { 996 struct asus_wmi *asus; 997 int ctrl_param; 998 999 asus = container_of(work, struct asus_wmi, lightbar_led_work); 1000 1001 ctrl_param = asus->lightbar_led_wk; 1002 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL); 1003 } 1004 1005 static void lightbar_led_set(struct led_classdev *led_cdev, 1006 enum led_brightness value) 1007 { 1008 struct asus_wmi *asus; 1009 1010 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 1011 1012 asus->lightbar_led_wk = !!value; 1013 queue_work(asus->led_workqueue, &asus->lightbar_led_work); 1014 } 1015 1016 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev) 1017 { 1018 struct asus_wmi *asus; 1019 u32 result; 1020 1021 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 1022 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result); 1023 1024 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK; 1025 } 1026 1027 static void asus_wmi_led_exit(struct asus_wmi *asus) 1028 { 1029 led_classdev_unregister(&asus->kbd_led); 1030 led_classdev_unregister(&asus->tpd_led); 1031 led_classdev_unregister(&asus->wlan_led); 1032 led_classdev_unregister(&asus->lightbar_led); 1033 1034 if (asus->led_workqueue) 1035 destroy_workqueue(asus->led_workqueue); 1036 } 1037 1038 static int asus_wmi_led_init(struct asus_wmi *asus) 1039 { 1040 int rv = 0, led_val; 1041 1042 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 1043 if (!asus->led_workqueue) 1044 return -ENOMEM; 1045 1046 if (read_tpd_led_state(asus) >= 0) { 1047 INIT_WORK(&asus->tpd_led_work, tpd_led_update); 1048 1049 asus->tpd_led.name = "asus::touchpad"; 1050 asus->tpd_led.brightness_set = tpd_led_set; 1051 asus->tpd_led.brightness_get = tpd_led_get; 1052 asus->tpd_led.max_brightness = 1; 1053 1054 rv = led_classdev_register(&asus->platform_device->dev, 1055 &asus->tpd_led); 1056 if (rv) 1057 goto error; 1058 } 1059 1060 if (!kbd_led_read(asus, &led_val, NULL)) { 1061 asus->kbd_led_wk = led_val; 1062 asus->kbd_led.name = "asus::kbd_backlight"; 1063 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED; 1064 asus->kbd_led.brightness_set = kbd_led_set; 1065 asus->kbd_led.brightness_get = kbd_led_get; 1066 asus->kbd_led.max_brightness = 3; 1067 1068 rv = led_classdev_register(&asus->platform_device->dev, 1069 &asus->kbd_led); 1070 if (rv) 1071 goto error; 1072 } 1073 1074 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_WIRELESS_LED) 1075 && (asus->driver->quirks->wapf > 0)) { 1076 INIT_WORK(&asus->wlan_led_work, wlan_led_update); 1077 1078 asus->wlan_led.name = "asus::wlan"; 1079 asus->wlan_led.brightness_set = wlan_led_set; 1080 if (!wlan_led_unknown_state(asus)) 1081 asus->wlan_led.brightness_get = wlan_led_get; 1082 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME; 1083 asus->wlan_led.max_brightness = 1; 1084 asus->wlan_led.default_trigger = "asus-wlan"; 1085 1086 rv = led_classdev_register(&asus->platform_device->dev, 1087 &asus->wlan_led); 1088 if (rv) 1089 goto error; 1090 } 1091 1092 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_LIGHTBAR)) { 1093 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update); 1094 1095 asus->lightbar_led.name = "asus::lightbar"; 1096 asus->lightbar_led.brightness_set = lightbar_led_set; 1097 asus->lightbar_led.brightness_get = lightbar_led_get; 1098 asus->lightbar_led.max_brightness = 1; 1099 1100 rv = led_classdev_register(&asus->platform_device->dev, 1101 &asus->lightbar_led); 1102 } 1103 1104 error: 1105 if (rv) 1106 asus_wmi_led_exit(asus); 1107 1108 return rv; 1109 } 1110 1111 /* RF *************************************************************************/ 1112 1113 /* 1114 * PCI hotplug (for wlan rfkill) 1115 */ 1116 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus) 1117 { 1118 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 1119 1120 if (result < 0) 1121 return false; 1122 return !result; 1123 } 1124 1125 static void asus_rfkill_hotplug(struct asus_wmi *asus) 1126 { 1127 struct pci_dev *dev; 1128 struct pci_bus *bus; 1129 bool blocked; 1130 bool absent; 1131 u32 l; 1132 1133 mutex_lock(&asus->wmi_lock); 1134 blocked = asus_wlan_rfkill_blocked(asus); 1135 mutex_unlock(&asus->wmi_lock); 1136 1137 mutex_lock(&asus->hotplug_lock); 1138 pci_lock_rescan_remove(); 1139 1140 if (asus->wlan.rfkill) 1141 rfkill_set_sw_state(asus->wlan.rfkill, blocked); 1142 1143 if (asus->hotplug_slot.ops) { 1144 bus = pci_find_bus(0, 1); 1145 if (!bus) { 1146 pr_warn("Unable to find PCI bus 1?\n"); 1147 goto out_unlock; 1148 } 1149 1150 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) { 1151 pr_err("Unable to read PCI config space?\n"); 1152 goto out_unlock; 1153 } 1154 absent = (l == 0xffffffff); 1155 1156 if (blocked != absent) { 1157 pr_warn("BIOS says wireless lan is %s, but the pci device is %s\n", 1158 blocked ? "blocked" : "unblocked", 1159 absent ? "absent" : "present"); 1160 pr_warn("skipped wireless hotplug as probably inappropriate for this model\n"); 1161 goto out_unlock; 1162 } 1163 1164 if (!blocked) { 1165 dev = pci_get_slot(bus, 0); 1166 if (dev) { 1167 /* Device already present */ 1168 pci_dev_put(dev); 1169 goto out_unlock; 1170 } 1171 dev = pci_scan_single_device(bus, 0); 1172 if (dev) { 1173 pci_bus_assign_resources(bus); 1174 pci_bus_add_device(dev); 1175 } 1176 } else { 1177 dev = pci_get_slot(bus, 0); 1178 if (dev) { 1179 pci_stop_and_remove_bus_device(dev); 1180 pci_dev_put(dev); 1181 } 1182 } 1183 } 1184 1185 out_unlock: 1186 pci_unlock_rescan_remove(); 1187 mutex_unlock(&asus->hotplug_lock); 1188 } 1189 1190 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data) 1191 { 1192 struct asus_wmi *asus = data; 1193 1194 if (event != ACPI_NOTIFY_BUS_CHECK) 1195 return; 1196 1197 /* 1198 * We can't call directly asus_rfkill_hotplug because most 1199 * of the time WMBC is still being executed and not reetrant. 1200 * There is currently no way to tell ACPICA that we want this 1201 * method to be serialized, we schedule a asus_rfkill_hotplug 1202 * call later, in a safer context. 1203 */ 1204 queue_work(asus->hotplug_workqueue, &asus->hotplug_work); 1205 } 1206 1207 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node) 1208 { 1209 acpi_status status; 1210 acpi_handle handle; 1211 1212 status = acpi_get_handle(NULL, node, &handle); 1213 if (ACPI_FAILURE(status)) 1214 return -ENODEV; 1215 1216 status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY, 1217 asus_rfkill_notify, asus); 1218 if (ACPI_FAILURE(status)) 1219 pr_warn("Failed to register notify on %s\n", node); 1220 1221 return 0; 1222 } 1223 1224 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node) 1225 { 1226 acpi_status status = AE_OK; 1227 acpi_handle handle; 1228 1229 status = acpi_get_handle(NULL, node, &handle); 1230 if (ACPI_FAILURE(status)) 1231 return; 1232 1233 status = acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY, 1234 asus_rfkill_notify); 1235 if (ACPI_FAILURE(status)) 1236 pr_err("Error removing rfkill notify handler %s\n", node); 1237 } 1238 1239 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot, 1240 u8 *value) 1241 { 1242 struct asus_wmi *asus = container_of(hotplug_slot, 1243 struct asus_wmi, hotplug_slot); 1244 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 1245 1246 if (result < 0) 1247 return result; 1248 1249 *value = !!result; 1250 return 0; 1251 } 1252 1253 static const struct hotplug_slot_ops asus_hotplug_slot_ops = { 1254 .get_adapter_status = asus_get_adapter_status, 1255 .get_power_status = asus_get_adapter_status, 1256 }; 1257 1258 static void asus_hotplug_work(struct work_struct *work) 1259 { 1260 struct asus_wmi *asus; 1261 1262 asus = container_of(work, struct asus_wmi, hotplug_work); 1263 asus_rfkill_hotplug(asus); 1264 } 1265 1266 static int asus_setup_pci_hotplug(struct asus_wmi *asus) 1267 { 1268 int ret = -ENOMEM; 1269 struct pci_bus *bus = pci_find_bus(0, 1); 1270 1271 if (!bus) { 1272 pr_err("Unable to find wifi PCI bus\n"); 1273 return -ENODEV; 1274 } 1275 1276 asus->hotplug_workqueue = 1277 create_singlethread_workqueue("hotplug_workqueue"); 1278 if (!asus->hotplug_workqueue) 1279 goto error_workqueue; 1280 1281 INIT_WORK(&asus->hotplug_work, asus_hotplug_work); 1282 1283 asus->hotplug_slot.ops = &asus_hotplug_slot_ops; 1284 1285 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi"); 1286 if (ret) { 1287 pr_err("Unable to register hotplug slot - %d\n", ret); 1288 goto error_register; 1289 } 1290 1291 return 0; 1292 1293 error_register: 1294 asus->hotplug_slot.ops = NULL; 1295 destroy_workqueue(asus->hotplug_workqueue); 1296 error_workqueue: 1297 return ret; 1298 } 1299 1300 /* 1301 * Rfkill devices 1302 */ 1303 static int asus_rfkill_set(void *data, bool blocked) 1304 { 1305 struct asus_rfkill *priv = data; 1306 u32 ctrl_param = !blocked; 1307 u32 dev_id = priv->dev_id; 1308 1309 /* 1310 * If the user bit is set, BIOS can't set and record the wlan status, 1311 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED 1312 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN). 1313 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED 1314 * while setting the wlan status through WMI. 1315 * This is also the behavior that windows app will do. 1316 */ 1317 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 1318 priv->asus->driver->wlan_ctrl_by_user) 1319 dev_id = ASUS_WMI_DEVID_WLAN_LED; 1320 1321 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL); 1322 } 1323 1324 static void asus_rfkill_query(struct rfkill *rfkill, void *data) 1325 { 1326 struct asus_rfkill *priv = data; 1327 int result; 1328 1329 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id); 1330 1331 if (result < 0) 1332 return; 1333 1334 rfkill_set_sw_state(priv->rfkill, !result); 1335 } 1336 1337 static int asus_rfkill_wlan_set(void *data, bool blocked) 1338 { 1339 struct asus_rfkill *priv = data; 1340 struct asus_wmi *asus = priv->asus; 1341 int ret; 1342 1343 /* 1344 * This handler is enabled only if hotplug is enabled. 1345 * In this case, the asus_wmi_set_devstate() will 1346 * trigger a wmi notification and we need to wait 1347 * this call to finish before being able to call 1348 * any wmi method 1349 */ 1350 mutex_lock(&asus->wmi_lock); 1351 ret = asus_rfkill_set(data, blocked); 1352 mutex_unlock(&asus->wmi_lock); 1353 return ret; 1354 } 1355 1356 static const struct rfkill_ops asus_rfkill_wlan_ops = { 1357 .set_block = asus_rfkill_wlan_set, 1358 .query = asus_rfkill_query, 1359 }; 1360 1361 static const struct rfkill_ops asus_rfkill_ops = { 1362 .set_block = asus_rfkill_set, 1363 .query = asus_rfkill_query, 1364 }; 1365 1366 static int asus_new_rfkill(struct asus_wmi *asus, 1367 struct asus_rfkill *arfkill, 1368 const char *name, enum rfkill_type type, int dev_id) 1369 { 1370 int result = asus_wmi_get_devstate_simple(asus, dev_id); 1371 struct rfkill **rfkill = &arfkill->rfkill; 1372 1373 if (result < 0) 1374 return result; 1375 1376 arfkill->dev_id = dev_id; 1377 arfkill->asus = asus; 1378 1379 if (dev_id == ASUS_WMI_DEVID_WLAN && 1380 asus->driver->quirks->hotplug_wireless) 1381 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1382 &asus_rfkill_wlan_ops, arfkill); 1383 else 1384 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1385 &asus_rfkill_ops, arfkill); 1386 1387 if (!*rfkill) 1388 return -EINVAL; 1389 1390 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 1391 (asus->driver->quirks->wapf > 0)) 1392 rfkill_set_led_trigger_name(*rfkill, "asus-wlan"); 1393 1394 rfkill_init_sw_state(*rfkill, !result); 1395 result = rfkill_register(*rfkill); 1396 if (result) { 1397 rfkill_destroy(*rfkill); 1398 *rfkill = NULL; 1399 return result; 1400 } 1401 return 0; 1402 } 1403 1404 static void asus_wmi_rfkill_exit(struct asus_wmi *asus) 1405 { 1406 if (asus->driver->wlan_ctrl_by_user && ashs_present()) 1407 return; 1408 1409 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1410 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1411 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1412 if (asus->wlan.rfkill) { 1413 rfkill_unregister(asus->wlan.rfkill); 1414 rfkill_destroy(asus->wlan.rfkill); 1415 asus->wlan.rfkill = NULL; 1416 } 1417 /* 1418 * Refresh pci hotplug in case the rfkill state was changed after 1419 * asus_unregister_rfkill_notifier() 1420 */ 1421 asus_rfkill_hotplug(asus); 1422 if (asus->hotplug_slot.ops) 1423 pci_hp_deregister(&asus->hotplug_slot); 1424 if (asus->hotplug_workqueue) 1425 destroy_workqueue(asus->hotplug_workqueue); 1426 1427 if (asus->bluetooth.rfkill) { 1428 rfkill_unregister(asus->bluetooth.rfkill); 1429 rfkill_destroy(asus->bluetooth.rfkill); 1430 asus->bluetooth.rfkill = NULL; 1431 } 1432 if (asus->wimax.rfkill) { 1433 rfkill_unregister(asus->wimax.rfkill); 1434 rfkill_destroy(asus->wimax.rfkill); 1435 asus->wimax.rfkill = NULL; 1436 } 1437 if (asus->wwan3g.rfkill) { 1438 rfkill_unregister(asus->wwan3g.rfkill); 1439 rfkill_destroy(asus->wwan3g.rfkill); 1440 asus->wwan3g.rfkill = NULL; 1441 } 1442 if (asus->gps.rfkill) { 1443 rfkill_unregister(asus->gps.rfkill); 1444 rfkill_destroy(asus->gps.rfkill); 1445 asus->gps.rfkill = NULL; 1446 } 1447 if (asus->uwb.rfkill) { 1448 rfkill_unregister(asus->uwb.rfkill); 1449 rfkill_destroy(asus->uwb.rfkill); 1450 asus->uwb.rfkill = NULL; 1451 } 1452 } 1453 1454 static int asus_wmi_rfkill_init(struct asus_wmi *asus) 1455 { 1456 int result = 0; 1457 1458 mutex_init(&asus->hotplug_lock); 1459 mutex_init(&asus->wmi_lock); 1460 1461 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan", 1462 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN); 1463 1464 if (result && result != -ENODEV) 1465 goto exit; 1466 1467 result = asus_new_rfkill(asus, &asus->bluetooth, 1468 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH, 1469 ASUS_WMI_DEVID_BLUETOOTH); 1470 1471 if (result && result != -ENODEV) 1472 goto exit; 1473 1474 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax", 1475 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX); 1476 1477 if (result && result != -ENODEV) 1478 goto exit; 1479 1480 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g", 1481 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G); 1482 1483 if (result && result != -ENODEV) 1484 goto exit; 1485 1486 result = asus_new_rfkill(asus, &asus->gps, "asus-gps", 1487 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS); 1488 1489 if (result && result != -ENODEV) 1490 goto exit; 1491 1492 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb", 1493 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB); 1494 1495 if (result && result != -ENODEV) 1496 goto exit; 1497 1498 if (!asus->driver->quirks->hotplug_wireless) 1499 goto exit; 1500 1501 result = asus_setup_pci_hotplug(asus); 1502 /* 1503 * If we get -EBUSY then something else is handling the PCI hotplug - 1504 * don't fail in this case 1505 */ 1506 if (result == -EBUSY) 1507 result = 0; 1508 1509 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1510 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1511 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1512 /* 1513 * Refresh pci hotplug in case the rfkill state was changed during 1514 * setup. 1515 */ 1516 asus_rfkill_hotplug(asus); 1517 1518 exit: 1519 if (result && result != -ENODEV) 1520 asus_wmi_rfkill_exit(asus); 1521 1522 if (result == -ENODEV) 1523 result = 0; 1524 1525 return result; 1526 } 1527 1528 /* Panel Overdrive ************************************************************/ 1529 static int panel_od_check_present(struct asus_wmi *asus) 1530 { 1531 u32 result; 1532 int err; 1533 1534 asus->panel_overdrive_available = false; 1535 1536 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_PANEL_OD, &result); 1537 if (err) { 1538 if (err == -ENODEV) 1539 return 0; 1540 return err; 1541 } 1542 1543 if (result & ASUS_WMI_DSTS_PRESENCE_BIT) { 1544 asus->panel_overdrive_available = true; 1545 asus->panel_overdrive = result & ASUS_WMI_DSTS_STATUS_BIT; 1546 } 1547 1548 return 0; 1549 } 1550 1551 static int panel_od_write(struct asus_wmi *asus) 1552 { 1553 u32 retval; 1554 u8 value; 1555 int err; 1556 1557 /* Don't rely on type conversion */ 1558 value = asus->panel_overdrive ? 1 : 0; 1559 1560 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_PANEL_OD, value, &retval); 1561 1562 if (err) { 1563 pr_warn("Failed to set panel overdrive: %d\n", err); 1564 return err; 1565 } 1566 1567 if (retval > 1) { 1568 pr_warn("Failed to set panel overdrive (retval): 0x%x\n", retval); 1569 return -EIO; 1570 } 1571 1572 sysfs_notify(&asus->platform_device->dev.kobj, NULL, "panel_od"); 1573 1574 return 0; 1575 } 1576 1577 static ssize_t panel_od_show(struct device *dev, 1578 struct device_attribute *attr, char *buf) 1579 { 1580 struct asus_wmi *asus = dev_get_drvdata(dev); 1581 1582 return sysfs_emit(buf, "%d\n", asus->panel_overdrive); 1583 } 1584 1585 static ssize_t panel_od_store(struct device *dev, 1586 struct device_attribute *attr, 1587 const char *buf, size_t count) 1588 { 1589 bool overdrive; 1590 int result; 1591 1592 struct asus_wmi *asus = dev_get_drvdata(dev); 1593 1594 result = kstrtobool(buf, &overdrive); 1595 if (result) 1596 return result; 1597 1598 asus->panel_overdrive = overdrive; 1599 result = panel_od_write(asus); 1600 1601 if (result) 1602 return result; 1603 1604 return count; 1605 } 1606 1607 static DEVICE_ATTR_RW(panel_od); 1608 1609 /* Quirks *********************************************************************/ 1610 1611 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus) 1612 { 1613 struct pci_dev *xhci_pdev; 1614 u32 orig_ports_available; 1615 u32 ports_available = asus->driver->quirks->xusb2pr; 1616 1617 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL, 1618 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI, 1619 NULL); 1620 1621 if (!xhci_pdev) 1622 return; 1623 1624 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1625 &orig_ports_available); 1626 1627 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1628 cpu_to_le32(ports_available)); 1629 1630 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n", 1631 orig_ports_available, ports_available); 1632 } 1633 1634 /* 1635 * Some devices dont support or have borcken get_als method 1636 * but still support set method. 1637 */ 1638 static void asus_wmi_set_als(void) 1639 { 1640 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL); 1641 } 1642 1643 /* Hwmon device ***************************************************************/ 1644 1645 static int asus_agfn_fan_speed_read(struct asus_wmi *asus, int fan, 1646 int *speed) 1647 { 1648 struct agfn_fan_args args = { 1649 .agfn.len = sizeof(args), 1650 .agfn.mfun = ASUS_FAN_MFUN, 1651 .agfn.sfun = ASUS_FAN_SFUN_READ, 1652 .fan = fan, 1653 .speed = 0, 1654 }; 1655 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1656 int status; 1657 1658 if (fan != 1) 1659 return -EINVAL; 1660 1661 status = asus_wmi_evaluate_method_agfn(input); 1662 1663 if (status || args.agfn.err) 1664 return -ENXIO; 1665 1666 if (speed) 1667 *speed = args.speed; 1668 1669 return 0; 1670 } 1671 1672 static int asus_agfn_fan_speed_write(struct asus_wmi *asus, int fan, 1673 int *speed) 1674 { 1675 struct agfn_fan_args args = { 1676 .agfn.len = sizeof(args), 1677 .agfn.mfun = ASUS_FAN_MFUN, 1678 .agfn.sfun = ASUS_FAN_SFUN_WRITE, 1679 .fan = fan, 1680 .speed = speed ? *speed : 0, 1681 }; 1682 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1683 int status; 1684 1685 /* 1: for setting 1st fan's speed 0: setting auto mode */ 1686 if (fan != 1 && fan != 0) 1687 return -EINVAL; 1688 1689 status = asus_wmi_evaluate_method_agfn(input); 1690 1691 if (status || args.agfn.err) 1692 return -ENXIO; 1693 1694 if (speed && fan == 1) 1695 asus->agfn_pwm = *speed; 1696 1697 return 0; 1698 } 1699 1700 /* 1701 * Check if we can read the speed of one fan. If true we assume we can also 1702 * control it. 1703 */ 1704 static bool asus_wmi_has_agfn_fan(struct asus_wmi *asus) 1705 { 1706 int status; 1707 int speed; 1708 u32 value; 1709 1710 status = asus_agfn_fan_speed_read(asus, 1, &speed); 1711 if (status != 0) 1712 return false; 1713 1714 status = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value); 1715 if (status != 0) 1716 return false; 1717 1718 /* 1719 * We need to find a better way, probably using sfun, 1720 * bits or spec ... 1721 * Currently we disable it if: 1722 * - ASUS_WMI_UNSUPPORTED_METHOD is returned 1723 * - reverved bits are non-zero 1724 * - sfun and presence bit are not set 1725 */ 1726 return !(value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000 1727 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT))); 1728 } 1729 1730 static int asus_fan_set_auto(struct asus_wmi *asus) 1731 { 1732 int status; 1733 u32 retval; 1734 1735 switch (asus->fan_type) { 1736 case FAN_TYPE_SPEC83: 1737 status = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL, 1738 0, &retval); 1739 if (status) 1740 return status; 1741 1742 if (retval != 1) 1743 return -EIO; 1744 break; 1745 1746 case FAN_TYPE_AGFN: 1747 status = asus_agfn_fan_speed_write(asus, 0, NULL); 1748 if (status) 1749 return -ENXIO; 1750 break; 1751 1752 default: 1753 return -ENXIO; 1754 } 1755 1756 1757 return 0; 1758 } 1759 1760 static ssize_t pwm1_show(struct device *dev, 1761 struct device_attribute *attr, 1762 char *buf) 1763 { 1764 struct asus_wmi *asus = dev_get_drvdata(dev); 1765 int err; 1766 int value; 1767 1768 /* If we already set a value then just return it */ 1769 if (asus->agfn_pwm >= 0) 1770 return sprintf(buf, "%d\n", asus->agfn_pwm); 1771 1772 /* 1773 * If we haven't set already set a value through the AGFN interface, 1774 * we read a current value through the (now-deprecated) FAN_CTRL device. 1775 */ 1776 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value); 1777 if (err < 0) 1778 return err; 1779 1780 value &= 0xFF; 1781 1782 if (value == 1) /* Low Speed */ 1783 value = 85; 1784 else if (value == 2) 1785 value = 170; 1786 else if (value == 3) 1787 value = 255; 1788 else if (value) { 1789 pr_err("Unknown fan speed %#x\n", value); 1790 value = -1; 1791 } 1792 1793 return sprintf(buf, "%d\n", value); 1794 } 1795 1796 static ssize_t pwm1_store(struct device *dev, 1797 struct device_attribute *attr, 1798 const char *buf, size_t count) { 1799 struct asus_wmi *asus = dev_get_drvdata(dev); 1800 int value; 1801 int state; 1802 int ret; 1803 1804 ret = kstrtouint(buf, 10, &value); 1805 if (ret) 1806 return ret; 1807 1808 value = clamp(value, 0, 255); 1809 1810 state = asus_agfn_fan_speed_write(asus, 1, &value); 1811 if (state) 1812 pr_warn("Setting fan speed failed: %d\n", state); 1813 else 1814 asus->fan_pwm_mode = ASUS_FAN_CTRL_MANUAL; 1815 1816 return count; 1817 } 1818 1819 static ssize_t fan1_input_show(struct device *dev, 1820 struct device_attribute *attr, 1821 char *buf) 1822 { 1823 struct asus_wmi *asus = dev_get_drvdata(dev); 1824 int value; 1825 int ret; 1826 1827 switch (asus->fan_type) { 1828 case FAN_TYPE_SPEC83: 1829 ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL, 1830 &value); 1831 if (ret < 0) 1832 return ret; 1833 1834 value &= 0xffff; 1835 break; 1836 1837 case FAN_TYPE_AGFN: 1838 /* no speed readable on manual mode */ 1839 if (asus->fan_pwm_mode == ASUS_FAN_CTRL_MANUAL) 1840 return -ENXIO; 1841 1842 ret = asus_agfn_fan_speed_read(asus, 1, &value); 1843 if (ret) { 1844 pr_warn("reading fan speed failed: %d\n", ret); 1845 return -ENXIO; 1846 } 1847 break; 1848 1849 default: 1850 return -ENXIO; 1851 } 1852 1853 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100); 1854 } 1855 1856 static ssize_t pwm1_enable_show(struct device *dev, 1857 struct device_attribute *attr, 1858 char *buf) 1859 { 1860 struct asus_wmi *asus = dev_get_drvdata(dev); 1861 1862 /* 1863 * Just read back the cached pwm mode. 1864 * 1865 * For the CPU_FAN device, the spec indicates that we should be 1866 * able to read the device status and consult bit 19 to see if we 1867 * are in Full On or Automatic mode. However, this does not work 1868 * in practice on X532FL at least (the bit is always 0) and there's 1869 * also nothing in the DSDT to indicate that this behaviour exists. 1870 */ 1871 return sprintf(buf, "%d\n", asus->fan_pwm_mode); 1872 } 1873 1874 static ssize_t pwm1_enable_store(struct device *dev, 1875 struct device_attribute *attr, 1876 const char *buf, size_t count) 1877 { 1878 struct asus_wmi *asus = dev_get_drvdata(dev); 1879 int status = 0; 1880 int state; 1881 int value; 1882 int ret; 1883 u32 retval; 1884 1885 ret = kstrtouint(buf, 10, &state); 1886 if (ret) 1887 return ret; 1888 1889 if (asus->fan_type == FAN_TYPE_SPEC83) { 1890 switch (state) { /* standard documented hwmon values */ 1891 case ASUS_FAN_CTRL_FULLSPEED: 1892 value = 1; 1893 break; 1894 case ASUS_FAN_CTRL_AUTO: 1895 value = 0; 1896 break; 1897 default: 1898 return -EINVAL; 1899 } 1900 1901 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL, 1902 value, &retval); 1903 if (ret) 1904 return ret; 1905 1906 if (retval != 1) 1907 return -EIO; 1908 } else if (asus->fan_type == FAN_TYPE_AGFN) { 1909 switch (state) { 1910 case ASUS_FAN_CTRL_MANUAL: 1911 break; 1912 1913 case ASUS_FAN_CTRL_AUTO: 1914 status = asus_fan_set_auto(asus); 1915 if (status) 1916 return status; 1917 break; 1918 1919 default: 1920 return -EINVAL; 1921 } 1922 } 1923 1924 asus->fan_pwm_mode = state; 1925 1926 /* Must set to disabled if mode is toggled */ 1927 if (asus->cpu_fan_curve_available) 1928 asus->custom_fan_curves[FAN_CURVE_DEV_CPU].enabled = false; 1929 if (asus->gpu_fan_curve_available) 1930 asus->custom_fan_curves[FAN_CURVE_DEV_GPU].enabled = false; 1931 1932 return count; 1933 } 1934 1935 static ssize_t fan1_label_show(struct device *dev, 1936 struct device_attribute *attr, 1937 char *buf) 1938 { 1939 return sprintf(buf, "%s\n", ASUS_FAN_DESC); 1940 } 1941 1942 static ssize_t asus_hwmon_temp1(struct device *dev, 1943 struct device_attribute *attr, 1944 char *buf) 1945 { 1946 struct asus_wmi *asus = dev_get_drvdata(dev); 1947 u32 value; 1948 int err; 1949 1950 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value); 1951 if (err < 0) 1952 return err; 1953 1954 return sprintf(buf, "%ld\n", 1955 deci_kelvin_to_millicelsius(value & 0xFFFF)); 1956 } 1957 1958 /* Fan1 */ 1959 static DEVICE_ATTR_RW(pwm1); 1960 static DEVICE_ATTR_RW(pwm1_enable); 1961 static DEVICE_ATTR_RO(fan1_input); 1962 static DEVICE_ATTR_RO(fan1_label); 1963 1964 /* Temperature */ 1965 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL); 1966 1967 static struct attribute *hwmon_attributes[] = { 1968 &dev_attr_pwm1.attr, 1969 &dev_attr_pwm1_enable.attr, 1970 &dev_attr_fan1_input.attr, 1971 &dev_attr_fan1_label.attr, 1972 1973 &dev_attr_temp1_input.attr, 1974 NULL 1975 }; 1976 1977 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj, 1978 struct attribute *attr, int idx) 1979 { 1980 struct device *dev = container_of(kobj, struct device, kobj); 1981 struct asus_wmi *asus = dev_get_drvdata(dev->parent); 1982 u32 value = ASUS_WMI_UNSUPPORTED_METHOD; 1983 1984 if (attr == &dev_attr_pwm1.attr) { 1985 if (asus->fan_type != FAN_TYPE_AGFN) 1986 return 0; 1987 } else if (attr == &dev_attr_fan1_input.attr 1988 || attr == &dev_attr_fan1_label.attr 1989 || attr == &dev_attr_pwm1_enable.attr) { 1990 if (asus->fan_type == FAN_TYPE_NONE) 1991 return 0; 1992 } else if (attr == &dev_attr_temp1_input.attr) { 1993 int err = asus_wmi_get_devstate(asus, 1994 ASUS_WMI_DEVID_THERMAL_CTRL, 1995 &value); 1996 1997 if (err < 0) 1998 return 0; /* can't return negative here */ 1999 2000 /* 2001 * If the temperature value in deci-Kelvin is near the absolute 2002 * zero temperature, something is clearly wrong 2003 */ 2004 if (value == 0 || value == 1) 2005 return 0; 2006 } 2007 2008 return attr->mode; 2009 } 2010 2011 static const struct attribute_group hwmon_attribute_group = { 2012 .is_visible = asus_hwmon_sysfs_is_visible, 2013 .attrs = hwmon_attributes 2014 }; 2015 __ATTRIBUTE_GROUPS(hwmon_attribute); 2016 2017 static int asus_wmi_hwmon_init(struct asus_wmi *asus) 2018 { 2019 struct device *dev = &asus->platform_device->dev; 2020 struct device *hwmon; 2021 2022 hwmon = devm_hwmon_device_register_with_groups(dev, "asus", asus, 2023 hwmon_attribute_groups); 2024 2025 if (IS_ERR(hwmon)) { 2026 pr_err("Could not register asus hwmon device\n"); 2027 return PTR_ERR(hwmon); 2028 } 2029 return 0; 2030 } 2031 2032 static int asus_wmi_fan_init(struct asus_wmi *asus) 2033 { 2034 asus->fan_type = FAN_TYPE_NONE; 2035 asus->agfn_pwm = -1; 2036 2037 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL)) 2038 asus->fan_type = FAN_TYPE_SPEC83; 2039 else if (asus_wmi_has_agfn_fan(asus)) 2040 asus->fan_type = FAN_TYPE_AGFN; 2041 2042 if (asus->fan_type == FAN_TYPE_NONE) 2043 return -ENODEV; 2044 2045 asus_fan_set_auto(asus); 2046 asus->fan_pwm_mode = ASUS_FAN_CTRL_AUTO; 2047 return 0; 2048 } 2049 2050 /* Fan mode *******************************************************************/ 2051 2052 static int fan_boost_mode_check_present(struct asus_wmi *asus) 2053 { 2054 u32 result; 2055 int err; 2056 2057 asus->fan_boost_mode_available = false; 2058 2059 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_BOOST_MODE, 2060 &result); 2061 if (err) { 2062 if (err == -ENODEV) 2063 return 0; 2064 else 2065 return err; 2066 } 2067 2068 if ((result & ASUS_WMI_DSTS_PRESENCE_BIT) && 2069 (result & ASUS_FAN_BOOST_MODES_MASK)) { 2070 asus->fan_boost_mode_available = true; 2071 asus->fan_boost_mode_mask = result & ASUS_FAN_BOOST_MODES_MASK; 2072 } 2073 2074 return 0; 2075 } 2076 2077 static int fan_boost_mode_write(struct asus_wmi *asus) 2078 { 2079 u32 retval; 2080 u8 value; 2081 int err; 2082 2083 value = asus->fan_boost_mode; 2084 2085 pr_info("Set fan boost mode: %u\n", value); 2086 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_FAN_BOOST_MODE, value, 2087 &retval); 2088 2089 sysfs_notify(&asus->platform_device->dev.kobj, NULL, 2090 "fan_boost_mode"); 2091 2092 if (err) { 2093 pr_warn("Failed to set fan boost mode: %d\n", err); 2094 return err; 2095 } 2096 2097 if (retval != 1) { 2098 pr_warn("Failed to set fan boost mode (retval): 0x%x\n", 2099 retval); 2100 return -EIO; 2101 } 2102 2103 return 0; 2104 } 2105 2106 static int fan_boost_mode_switch_next(struct asus_wmi *asus) 2107 { 2108 u8 mask = asus->fan_boost_mode_mask; 2109 2110 if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_NORMAL) { 2111 if (mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK) 2112 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_OVERBOOST; 2113 else if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK) 2114 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT; 2115 } else if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) { 2116 if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK) 2117 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT; 2118 else 2119 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL; 2120 } else { 2121 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL; 2122 } 2123 2124 return fan_boost_mode_write(asus); 2125 } 2126 2127 static ssize_t fan_boost_mode_show(struct device *dev, 2128 struct device_attribute *attr, char *buf) 2129 { 2130 struct asus_wmi *asus = dev_get_drvdata(dev); 2131 2132 return scnprintf(buf, PAGE_SIZE, "%d\n", asus->fan_boost_mode); 2133 } 2134 2135 static ssize_t fan_boost_mode_store(struct device *dev, 2136 struct device_attribute *attr, 2137 const char *buf, size_t count) 2138 { 2139 struct asus_wmi *asus = dev_get_drvdata(dev); 2140 u8 mask = asus->fan_boost_mode_mask; 2141 u8 new_mode; 2142 int result; 2143 2144 result = kstrtou8(buf, 10, &new_mode); 2145 if (result < 0) { 2146 pr_warn("Trying to store invalid value\n"); 2147 return result; 2148 } 2149 2150 if (new_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) { 2151 if (!(mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK)) 2152 return -EINVAL; 2153 } else if (new_mode == ASUS_FAN_BOOST_MODE_SILENT) { 2154 if (!(mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)) 2155 return -EINVAL; 2156 } else if (new_mode != ASUS_FAN_BOOST_MODE_NORMAL) { 2157 return -EINVAL; 2158 } 2159 2160 asus->fan_boost_mode = new_mode; 2161 fan_boost_mode_write(asus); 2162 2163 return count; 2164 } 2165 2166 // Fan boost mode: 0 - normal, 1 - overboost, 2 - silent 2167 static DEVICE_ATTR_RW(fan_boost_mode); 2168 2169 /* Custom fan curves **********************************************************/ 2170 2171 static void fan_curve_copy_from_buf(struct fan_curve_data *data, u8 *buf) 2172 { 2173 int i; 2174 2175 for (i = 0; i < FAN_CURVE_POINTS; i++) { 2176 data->temps[i] = buf[i]; 2177 } 2178 2179 for (i = 0; i < FAN_CURVE_POINTS; i++) { 2180 data->percents[i] = 2181 255 * buf[i + FAN_CURVE_POINTS] / 100; 2182 } 2183 } 2184 2185 static int fan_curve_get_factory_default(struct asus_wmi *asus, u32 fan_dev) 2186 { 2187 struct fan_curve_data *curves; 2188 u8 buf[FAN_CURVE_BUF_LEN]; 2189 int fan_idx = 0; 2190 u8 mode = 0; 2191 int err; 2192 2193 if (asus->throttle_thermal_policy_available) 2194 mode = asus->throttle_thermal_policy_mode; 2195 /* DEVID_<C/G>PU_FAN_CURVE is switched for OVERBOOST vs SILENT */ 2196 if (mode == 2) 2197 mode = 1; 2198 else if (mode == 1) 2199 mode = 2; 2200 2201 if (fan_dev == ASUS_WMI_DEVID_GPU_FAN_CURVE) 2202 fan_idx = FAN_CURVE_DEV_GPU; 2203 2204 curves = &asus->custom_fan_curves[fan_idx]; 2205 err = asus_wmi_evaluate_method_buf(asus->dsts_id, fan_dev, mode, buf, 2206 FAN_CURVE_BUF_LEN); 2207 if (err) 2208 return err; 2209 2210 fan_curve_copy_from_buf(curves, buf); 2211 curves->device_id = fan_dev; 2212 2213 return 0; 2214 } 2215 2216 /* Check if capability exists, and populate defaults */ 2217 static int fan_curve_check_present(struct asus_wmi *asus, bool *available, 2218 u32 fan_dev) 2219 { 2220 int err; 2221 2222 *available = false; 2223 2224 err = fan_curve_get_factory_default(asus, fan_dev); 2225 if (err) { 2226 if (err == -ENODEV) 2227 return 0; 2228 return err; 2229 } 2230 2231 *available = true; 2232 return 0; 2233 } 2234 2235 /* Determine which fan the attribute is for if SENSOR_ATTR */ 2236 static struct fan_curve_data *fan_curve_attr_select(struct asus_wmi *asus, 2237 struct device_attribute *attr) 2238 { 2239 int index = to_sensor_dev_attr(attr)->index; 2240 2241 return &asus->custom_fan_curves[index & FAN_CURVE_DEV_GPU]; 2242 } 2243 2244 /* Determine which fan the attribute is for if SENSOR_ATTR_2 */ 2245 static struct fan_curve_data *fan_curve_attr_2_select(struct asus_wmi *asus, 2246 struct device_attribute *attr) 2247 { 2248 int nr = to_sensor_dev_attr_2(attr)->nr; 2249 2250 return &asus->custom_fan_curves[nr & FAN_CURVE_DEV_GPU]; 2251 } 2252 2253 static ssize_t fan_curve_show(struct device *dev, 2254 struct device_attribute *attr, char *buf) 2255 { 2256 struct sensor_device_attribute_2 *dev_attr = to_sensor_dev_attr_2(attr); 2257 struct asus_wmi *asus = dev_get_drvdata(dev); 2258 struct fan_curve_data *data; 2259 int value, index, nr; 2260 2261 data = fan_curve_attr_2_select(asus, attr); 2262 index = dev_attr->index; 2263 nr = dev_attr->nr; 2264 2265 if (nr & FAN_CURVE_PWM_MASK) 2266 value = data->percents[index]; 2267 else 2268 value = data->temps[index]; 2269 2270 return sysfs_emit(buf, "%d\n", value); 2271 } 2272 2273 /* 2274 * "fan_dev" is the related WMI method such as ASUS_WMI_DEVID_CPU_FAN_CURVE. 2275 */ 2276 static int fan_curve_write(struct asus_wmi *asus, 2277 struct fan_curve_data *data) 2278 { 2279 u32 arg1 = 0, arg2 = 0, arg3 = 0, arg4 = 0; 2280 u8 *percents = data->percents; 2281 u8 *temps = data->temps; 2282 int ret, i, shift = 0; 2283 2284 if (!data->enabled) 2285 return 0; 2286 2287 for (i = 0; i < FAN_CURVE_POINTS / 2; i++) { 2288 arg1 += (temps[i]) << shift; 2289 arg2 += (temps[i + 4]) << shift; 2290 /* Scale to percentage for device */ 2291 arg3 += (100 * percents[i] / 255) << shift; 2292 arg4 += (100 * percents[i + 4] / 255) << shift; 2293 shift += 8; 2294 } 2295 2296 return asus_wmi_evaluate_method5(ASUS_WMI_METHODID_DEVS, 2297 data->device_id, 2298 arg1, arg2, arg3, arg4, &ret); 2299 } 2300 2301 static ssize_t fan_curve_store(struct device *dev, 2302 struct device_attribute *attr, const char *buf, 2303 size_t count) 2304 { 2305 struct sensor_device_attribute_2 *dev_attr = to_sensor_dev_attr_2(attr); 2306 struct asus_wmi *asus = dev_get_drvdata(dev); 2307 struct fan_curve_data *data; 2308 u8 value; 2309 int err; 2310 2311 int pwm = dev_attr->nr & FAN_CURVE_PWM_MASK; 2312 int index = dev_attr->index; 2313 2314 data = fan_curve_attr_2_select(asus, attr); 2315 2316 err = kstrtou8(buf, 10, &value); 2317 if (err < 0) 2318 return err; 2319 2320 if (pwm) { 2321 data->percents[index] = value; 2322 } else { 2323 data->temps[index] = value; 2324 } 2325 2326 /* 2327 * Mark as disabled so the user has to explicitly enable to apply a 2328 * changed fan curve. This prevents potential lockups from writing out 2329 * many changes as one-write-per-change. 2330 */ 2331 data->enabled = false; 2332 2333 return count; 2334 } 2335 2336 static ssize_t fan_curve_enable_show(struct device *dev, 2337 struct device_attribute *attr, char *buf) 2338 { 2339 struct asus_wmi *asus = dev_get_drvdata(dev); 2340 struct fan_curve_data *data; 2341 int out = 2; 2342 2343 data = fan_curve_attr_select(asus, attr); 2344 2345 if (data->enabled) 2346 out = 1; 2347 2348 return sysfs_emit(buf, "%d\n", out); 2349 } 2350 2351 static ssize_t fan_curve_enable_store(struct device *dev, 2352 struct device_attribute *attr, 2353 const char *buf, size_t count) 2354 { 2355 struct asus_wmi *asus = dev_get_drvdata(dev); 2356 struct fan_curve_data *data; 2357 int value, err; 2358 2359 data = fan_curve_attr_select(asus, attr); 2360 2361 err = kstrtoint(buf, 10, &value); 2362 if (err < 0) 2363 return err; 2364 2365 switch (value) { 2366 case 1: 2367 data->enabled = true; 2368 break; 2369 case 2: 2370 data->enabled = false; 2371 break; 2372 /* 2373 * Auto + reset the fan curve data to defaults. Make it an explicit 2374 * option so that users don't accidentally overwrite a set fan curve. 2375 */ 2376 case 3: 2377 err = fan_curve_get_factory_default(asus, data->device_id); 2378 if (err) 2379 return err; 2380 data->enabled = false; 2381 break; 2382 default: 2383 return -EINVAL; 2384 } 2385 2386 if (data->enabled) { 2387 err = fan_curve_write(asus, data); 2388 if (err) 2389 return err; 2390 } else { 2391 /* 2392 * For machines with throttle this is the only way to reset fans 2393 * to default mode of operation (does not erase curve data). 2394 */ 2395 if (asus->throttle_thermal_policy_available) { 2396 err = throttle_thermal_policy_write(asus); 2397 if (err) 2398 return err; 2399 /* Similar is true for laptops with this fan */ 2400 } else if (asus->fan_type == FAN_TYPE_SPEC83) { 2401 err = asus_fan_set_auto(asus); 2402 if (err) 2403 return err; 2404 } else { 2405 /* Safeguard against fautly ACPI tables */ 2406 err = fan_curve_get_factory_default(asus, data->device_id); 2407 if (err) 2408 return err; 2409 err = fan_curve_write(asus, data); 2410 if (err) 2411 return err; 2412 } 2413 } 2414 return count; 2415 } 2416 2417 /* CPU */ 2418 static SENSOR_DEVICE_ATTR_RW(pwm1_enable, fan_curve_enable, FAN_CURVE_DEV_CPU); 2419 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_temp, fan_curve, 2420 FAN_CURVE_DEV_CPU, 0); 2421 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_temp, fan_curve, 2422 FAN_CURVE_DEV_CPU, 1); 2423 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point3_temp, fan_curve, 2424 FAN_CURVE_DEV_CPU, 2); 2425 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point4_temp, fan_curve, 2426 FAN_CURVE_DEV_CPU, 3); 2427 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point5_temp, fan_curve, 2428 FAN_CURVE_DEV_CPU, 4); 2429 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point6_temp, fan_curve, 2430 FAN_CURVE_DEV_CPU, 5); 2431 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point7_temp, fan_curve, 2432 FAN_CURVE_DEV_CPU, 6); 2433 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point8_temp, fan_curve, 2434 FAN_CURVE_DEV_CPU, 7); 2435 2436 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, fan_curve, 2437 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 0); 2438 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, fan_curve, 2439 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 1); 2440 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point3_pwm, fan_curve, 2441 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 2); 2442 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point4_pwm, fan_curve, 2443 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 3); 2444 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point5_pwm, fan_curve, 2445 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 4); 2446 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point6_pwm, fan_curve, 2447 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 5); 2448 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point7_pwm, fan_curve, 2449 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 6); 2450 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point8_pwm, fan_curve, 2451 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 7); 2452 2453 /* GPU */ 2454 static SENSOR_DEVICE_ATTR_RW(pwm2_enable, fan_curve_enable, FAN_CURVE_DEV_GPU); 2455 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_temp, fan_curve, 2456 FAN_CURVE_DEV_GPU, 0); 2457 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_temp, fan_curve, 2458 FAN_CURVE_DEV_GPU, 1); 2459 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point3_temp, fan_curve, 2460 FAN_CURVE_DEV_GPU, 2); 2461 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point4_temp, fan_curve, 2462 FAN_CURVE_DEV_GPU, 3); 2463 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point5_temp, fan_curve, 2464 FAN_CURVE_DEV_GPU, 4); 2465 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point6_temp, fan_curve, 2466 FAN_CURVE_DEV_GPU, 5); 2467 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point7_temp, fan_curve, 2468 FAN_CURVE_DEV_GPU, 6); 2469 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point8_temp, fan_curve, 2470 FAN_CURVE_DEV_GPU, 7); 2471 2472 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, fan_curve, 2473 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 0); 2474 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, fan_curve, 2475 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 1); 2476 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point3_pwm, fan_curve, 2477 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 2); 2478 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point4_pwm, fan_curve, 2479 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 3); 2480 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point5_pwm, fan_curve, 2481 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 4); 2482 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point6_pwm, fan_curve, 2483 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 5); 2484 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point7_pwm, fan_curve, 2485 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 6); 2486 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point8_pwm, fan_curve, 2487 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 7); 2488 2489 static struct attribute *asus_fan_curve_attr[] = { 2490 /* CPU */ 2491 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 2492 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, 2493 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, 2494 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, 2495 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, 2496 &sensor_dev_attr_pwm1_auto_point5_temp.dev_attr.attr, 2497 &sensor_dev_attr_pwm1_auto_point6_temp.dev_attr.attr, 2498 &sensor_dev_attr_pwm1_auto_point7_temp.dev_attr.attr, 2499 &sensor_dev_attr_pwm1_auto_point8_temp.dev_attr.attr, 2500 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 2501 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 2502 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, 2503 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, 2504 &sensor_dev_attr_pwm1_auto_point5_pwm.dev_attr.attr, 2505 &sensor_dev_attr_pwm1_auto_point6_pwm.dev_attr.attr, 2506 &sensor_dev_attr_pwm1_auto_point7_pwm.dev_attr.attr, 2507 &sensor_dev_attr_pwm1_auto_point8_pwm.dev_attr.attr, 2508 /* GPU */ 2509 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 2510 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr, 2511 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr, 2512 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr, 2513 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr, 2514 &sensor_dev_attr_pwm2_auto_point5_temp.dev_attr.attr, 2515 &sensor_dev_attr_pwm2_auto_point6_temp.dev_attr.attr, 2516 &sensor_dev_attr_pwm2_auto_point7_temp.dev_attr.attr, 2517 &sensor_dev_attr_pwm2_auto_point8_temp.dev_attr.attr, 2518 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 2519 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, 2520 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr, 2521 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr, 2522 &sensor_dev_attr_pwm2_auto_point5_pwm.dev_attr.attr, 2523 &sensor_dev_attr_pwm2_auto_point6_pwm.dev_attr.attr, 2524 &sensor_dev_attr_pwm2_auto_point7_pwm.dev_attr.attr, 2525 &sensor_dev_attr_pwm2_auto_point8_pwm.dev_attr.attr, 2526 NULL 2527 }; 2528 2529 static umode_t asus_fan_curve_is_visible(struct kobject *kobj, 2530 struct attribute *attr, int idx) 2531 { 2532 struct device *dev = container_of(kobj, struct device, kobj); 2533 struct asus_wmi *asus = dev_get_drvdata(dev->parent); 2534 2535 /* 2536 * Check the char instead of casting attr as there are two attr types 2537 * involved here (attr1 and attr2) 2538 */ 2539 if (asus->cpu_fan_curve_available && attr->name[3] == '1') 2540 return 0644; 2541 2542 if (asus->gpu_fan_curve_available && attr->name[3] == '2') 2543 return 0644; 2544 2545 return 0; 2546 } 2547 2548 static const struct attribute_group asus_fan_curve_attr_group = { 2549 .is_visible = asus_fan_curve_is_visible, 2550 .attrs = asus_fan_curve_attr, 2551 }; 2552 __ATTRIBUTE_GROUPS(asus_fan_curve_attr); 2553 2554 /* 2555 * Must be initialised after throttle_thermal_policy_check_present() as 2556 * we check the status of throttle_thermal_policy_available during init. 2557 */ 2558 static int asus_wmi_custom_fan_curve_init(struct asus_wmi *asus) 2559 { 2560 struct device *dev = &asus->platform_device->dev; 2561 struct device *hwmon; 2562 int err; 2563 2564 err = fan_curve_check_present(asus, &asus->cpu_fan_curve_available, 2565 ASUS_WMI_DEVID_CPU_FAN_CURVE); 2566 if (err) 2567 return err; 2568 2569 err = fan_curve_check_present(asus, &asus->gpu_fan_curve_available, 2570 ASUS_WMI_DEVID_GPU_FAN_CURVE); 2571 if (err) 2572 return err; 2573 2574 if (!asus->cpu_fan_curve_available && !asus->gpu_fan_curve_available) 2575 return 0; 2576 2577 hwmon = devm_hwmon_device_register_with_groups( 2578 dev, "asus_custom_fan_curve", asus, asus_fan_curve_attr_groups); 2579 2580 if (IS_ERR(hwmon)) { 2581 dev_err(dev, 2582 "Could not register asus_custom_fan_curve device\n"); 2583 return PTR_ERR(hwmon); 2584 } 2585 2586 return 0; 2587 } 2588 2589 /* Throttle thermal policy ****************************************************/ 2590 2591 static int throttle_thermal_policy_check_present(struct asus_wmi *asus) 2592 { 2593 u32 result; 2594 int err; 2595 2596 asus->throttle_thermal_policy_available = false; 2597 2598 err = asus_wmi_get_devstate(asus, 2599 ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY, 2600 &result); 2601 if (err) { 2602 if (err == -ENODEV) 2603 return 0; 2604 return err; 2605 } 2606 2607 if (result & ASUS_WMI_DSTS_PRESENCE_BIT) 2608 asus->throttle_thermal_policy_available = true; 2609 2610 return 0; 2611 } 2612 2613 static int throttle_thermal_policy_write(struct asus_wmi *asus) 2614 { 2615 int err; 2616 u8 value; 2617 u32 retval; 2618 2619 value = asus->throttle_thermal_policy_mode; 2620 2621 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY, 2622 value, &retval); 2623 2624 sysfs_notify(&asus->platform_device->dev.kobj, NULL, 2625 "throttle_thermal_policy"); 2626 2627 if (err) { 2628 pr_warn("Failed to set throttle thermal policy: %d\n", err); 2629 return err; 2630 } 2631 2632 if (retval != 1) { 2633 pr_warn("Failed to set throttle thermal policy (retval): 0x%x\n", 2634 retval); 2635 return -EIO; 2636 } 2637 2638 /* Must set to disabled if mode is toggled */ 2639 if (asus->cpu_fan_curve_available) 2640 asus->custom_fan_curves[FAN_CURVE_DEV_CPU].enabled = false; 2641 if (asus->gpu_fan_curve_available) 2642 asus->custom_fan_curves[FAN_CURVE_DEV_GPU].enabled = false; 2643 2644 return 0; 2645 } 2646 2647 static int throttle_thermal_policy_set_default(struct asus_wmi *asus) 2648 { 2649 if (!asus->throttle_thermal_policy_available) 2650 return 0; 2651 2652 asus->throttle_thermal_policy_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT; 2653 return throttle_thermal_policy_write(asus); 2654 } 2655 2656 static int throttle_thermal_policy_switch_next(struct asus_wmi *asus) 2657 { 2658 u8 new_mode = asus->throttle_thermal_policy_mode + 1; 2659 int err; 2660 2661 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT) 2662 new_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT; 2663 2664 asus->throttle_thermal_policy_mode = new_mode; 2665 err = throttle_thermal_policy_write(asus); 2666 if (err) 2667 return err; 2668 2669 /* 2670 * Ensure that platform_profile updates userspace with the change to ensure 2671 * that platform_profile and throttle_thermal_policy_mode are in sync. 2672 */ 2673 platform_profile_notify(); 2674 2675 return 0; 2676 } 2677 2678 static ssize_t throttle_thermal_policy_show(struct device *dev, 2679 struct device_attribute *attr, char *buf) 2680 { 2681 struct asus_wmi *asus = dev_get_drvdata(dev); 2682 u8 mode = asus->throttle_thermal_policy_mode; 2683 2684 return scnprintf(buf, PAGE_SIZE, "%d\n", mode); 2685 } 2686 2687 static ssize_t throttle_thermal_policy_store(struct device *dev, 2688 struct device_attribute *attr, 2689 const char *buf, size_t count) 2690 { 2691 struct asus_wmi *asus = dev_get_drvdata(dev); 2692 u8 new_mode; 2693 int result; 2694 int err; 2695 2696 result = kstrtou8(buf, 10, &new_mode); 2697 if (result < 0) 2698 return result; 2699 2700 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT) 2701 return -EINVAL; 2702 2703 asus->throttle_thermal_policy_mode = new_mode; 2704 err = throttle_thermal_policy_write(asus); 2705 if (err) 2706 return err; 2707 2708 /* 2709 * Ensure that platform_profile updates userspace with the change to ensure 2710 * that platform_profile and throttle_thermal_policy_mode are in sync. 2711 */ 2712 platform_profile_notify(); 2713 2714 return count; 2715 } 2716 2717 // Throttle thermal policy: 0 - default, 1 - overboost, 2 - silent 2718 static DEVICE_ATTR_RW(throttle_thermal_policy); 2719 2720 /* Platform profile ***********************************************************/ 2721 static int asus_wmi_platform_profile_get(struct platform_profile_handler *pprof, 2722 enum platform_profile_option *profile) 2723 { 2724 struct asus_wmi *asus; 2725 int tp; 2726 2727 asus = container_of(pprof, struct asus_wmi, platform_profile_handler); 2728 2729 tp = asus->throttle_thermal_policy_mode; 2730 2731 switch (tp) { 2732 case ASUS_THROTTLE_THERMAL_POLICY_DEFAULT: 2733 *profile = PLATFORM_PROFILE_BALANCED; 2734 break; 2735 case ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST: 2736 *profile = PLATFORM_PROFILE_PERFORMANCE; 2737 break; 2738 case ASUS_THROTTLE_THERMAL_POLICY_SILENT: 2739 *profile = PLATFORM_PROFILE_QUIET; 2740 break; 2741 default: 2742 return -EINVAL; 2743 } 2744 2745 return 0; 2746 } 2747 2748 static int asus_wmi_platform_profile_set(struct platform_profile_handler *pprof, 2749 enum platform_profile_option profile) 2750 { 2751 struct asus_wmi *asus; 2752 int tp; 2753 2754 asus = container_of(pprof, struct asus_wmi, platform_profile_handler); 2755 2756 switch (profile) { 2757 case PLATFORM_PROFILE_PERFORMANCE: 2758 tp = ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST; 2759 break; 2760 case PLATFORM_PROFILE_BALANCED: 2761 tp = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT; 2762 break; 2763 case PLATFORM_PROFILE_QUIET: 2764 tp = ASUS_THROTTLE_THERMAL_POLICY_SILENT; 2765 break; 2766 default: 2767 return -EOPNOTSUPP; 2768 } 2769 2770 asus->throttle_thermal_policy_mode = tp; 2771 return throttle_thermal_policy_write(asus); 2772 } 2773 2774 static int platform_profile_setup(struct asus_wmi *asus) 2775 { 2776 struct device *dev = &asus->platform_device->dev; 2777 int err; 2778 2779 /* 2780 * Not an error if a component platform_profile relies on is unavailable 2781 * so early return, skipping the setup of platform_profile. 2782 */ 2783 if (!asus->throttle_thermal_policy_available) 2784 return 0; 2785 2786 dev_info(dev, "Using throttle_thermal_policy for platform_profile support\n"); 2787 2788 asus->platform_profile_handler.profile_get = asus_wmi_platform_profile_get; 2789 asus->platform_profile_handler.profile_set = asus_wmi_platform_profile_set; 2790 2791 set_bit(PLATFORM_PROFILE_QUIET, asus->platform_profile_handler.choices); 2792 set_bit(PLATFORM_PROFILE_BALANCED, 2793 asus->platform_profile_handler.choices); 2794 set_bit(PLATFORM_PROFILE_PERFORMANCE, 2795 asus->platform_profile_handler.choices); 2796 2797 err = platform_profile_register(&asus->platform_profile_handler); 2798 if (err) 2799 return err; 2800 2801 asus->platform_profile_support = true; 2802 return 0; 2803 } 2804 2805 /* Backlight ******************************************************************/ 2806 2807 static int read_backlight_power(struct asus_wmi *asus) 2808 { 2809 int ret; 2810 2811 if (asus->driver->quirks->store_backlight_power) 2812 ret = !asus->driver->panel_power; 2813 else 2814 ret = asus_wmi_get_devstate_simple(asus, 2815 ASUS_WMI_DEVID_BACKLIGHT); 2816 2817 if (ret < 0) 2818 return ret; 2819 2820 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; 2821 } 2822 2823 static int read_brightness_max(struct asus_wmi *asus) 2824 { 2825 u32 retval; 2826 int err; 2827 2828 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 2829 if (err < 0) 2830 return err; 2831 2832 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK; 2833 retval >>= 8; 2834 2835 if (!retval) 2836 return -ENODEV; 2837 2838 return retval; 2839 } 2840 2841 static int read_brightness(struct backlight_device *bd) 2842 { 2843 struct asus_wmi *asus = bl_get_data(bd); 2844 u32 retval; 2845 int err; 2846 2847 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 2848 if (err < 0) 2849 return err; 2850 2851 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 2852 } 2853 2854 static u32 get_scalar_command(struct backlight_device *bd) 2855 { 2856 struct asus_wmi *asus = bl_get_data(bd); 2857 u32 ctrl_param = 0; 2858 2859 if ((asus->driver->brightness < bd->props.brightness) || 2860 bd->props.brightness == bd->props.max_brightness) 2861 ctrl_param = 0x00008001; 2862 else if ((asus->driver->brightness > bd->props.brightness) || 2863 bd->props.brightness == 0) 2864 ctrl_param = 0x00008000; 2865 2866 asus->driver->brightness = bd->props.brightness; 2867 2868 return ctrl_param; 2869 } 2870 2871 static int update_bl_status(struct backlight_device *bd) 2872 { 2873 struct asus_wmi *asus = bl_get_data(bd); 2874 u32 ctrl_param; 2875 int power, err = 0; 2876 2877 power = read_backlight_power(asus); 2878 if (power != -ENODEV && bd->props.power != power) { 2879 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK); 2880 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2881 ctrl_param, NULL); 2882 if (asus->driver->quirks->store_backlight_power) 2883 asus->driver->panel_power = bd->props.power; 2884 2885 /* When using scalar brightness, updating the brightness 2886 * will mess with the backlight power */ 2887 if (asus->driver->quirks->scalar_panel_brightness) 2888 return err; 2889 } 2890 2891 if (asus->driver->quirks->scalar_panel_brightness) 2892 ctrl_param = get_scalar_command(bd); 2893 else 2894 ctrl_param = bd->props.brightness; 2895 2896 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS, 2897 ctrl_param, NULL); 2898 2899 return err; 2900 } 2901 2902 static const struct backlight_ops asus_wmi_bl_ops = { 2903 .get_brightness = read_brightness, 2904 .update_status = update_bl_status, 2905 }; 2906 2907 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code) 2908 { 2909 struct backlight_device *bd = asus->backlight_device; 2910 int old = bd->props.brightness; 2911 int new = old; 2912 2913 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 2914 new = code - NOTIFY_BRNUP_MIN + 1; 2915 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 2916 new = code - NOTIFY_BRNDOWN_MIN; 2917 2918 bd->props.brightness = new; 2919 backlight_update_status(bd); 2920 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 2921 2922 return old; 2923 } 2924 2925 static int asus_wmi_backlight_init(struct asus_wmi *asus) 2926 { 2927 struct backlight_device *bd; 2928 struct backlight_properties props; 2929 int max; 2930 int power; 2931 2932 max = read_brightness_max(asus); 2933 if (max < 0) 2934 return max; 2935 2936 power = read_backlight_power(asus); 2937 if (power == -ENODEV) 2938 power = FB_BLANK_UNBLANK; 2939 else if (power < 0) 2940 return power; 2941 2942 memset(&props, 0, sizeof(struct backlight_properties)); 2943 props.type = BACKLIGHT_PLATFORM; 2944 props.max_brightness = max; 2945 bd = backlight_device_register(asus->driver->name, 2946 &asus->platform_device->dev, asus, 2947 &asus_wmi_bl_ops, &props); 2948 if (IS_ERR(bd)) { 2949 pr_err("Could not register backlight device\n"); 2950 return PTR_ERR(bd); 2951 } 2952 2953 asus->backlight_device = bd; 2954 2955 if (asus->driver->quirks->store_backlight_power) 2956 asus->driver->panel_power = power; 2957 2958 bd->props.brightness = read_brightness(bd); 2959 bd->props.power = power; 2960 backlight_update_status(bd); 2961 2962 asus->driver->brightness = bd->props.brightness; 2963 2964 return 0; 2965 } 2966 2967 static void asus_wmi_backlight_exit(struct asus_wmi *asus) 2968 { 2969 backlight_device_unregister(asus->backlight_device); 2970 2971 asus->backlight_device = NULL; 2972 } 2973 2974 static int is_display_toggle(int code) 2975 { 2976 /* display toggle keys */ 2977 if ((code >= 0x61 && code <= 0x67) || 2978 (code >= 0x8c && code <= 0x93) || 2979 (code >= 0xa0 && code <= 0xa7) || 2980 (code >= 0xd0 && code <= 0xd5)) 2981 return 1; 2982 2983 return 0; 2984 } 2985 2986 /* Fn-lock ********************************************************************/ 2987 2988 static bool asus_wmi_has_fnlock_key(struct asus_wmi *asus) 2989 { 2990 u32 result; 2991 2992 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FNLOCK, &result); 2993 2994 return (result & ASUS_WMI_DSTS_PRESENCE_BIT) && 2995 !(result & ASUS_WMI_FNLOCK_BIOS_DISABLED); 2996 } 2997 2998 static void asus_wmi_fnlock_update(struct asus_wmi *asus) 2999 { 3000 int mode = asus->fnlock_locked; 3001 3002 asus_wmi_set_devstate(ASUS_WMI_DEVID_FNLOCK, mode, NULL); 3003 } 3004 3005 /* WMI events *****************************************************************/ 3006 3007 static int asus_wmi_get_event_code(u32 value) 3008 { 3009 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 3010 union acpi_object *obj; 3011 acpi_status status; 3012 int code; 3013 3014 status = wmi_get_event_data(value, &response); 3015 if (ACPI_FAILURE(status)) { 3016 pr_warn("Failed to get WMI notify code: %s\n", 3017 acpi_format_exception(status)); 3018 return -EIO; 3019 } 3020 3021 obj = (union acpi_object *)response.pointer; 3022 3023 if (obj && obj->type == ACPI_TYPE_INTEGER) 3024 code = (int)(obj->integer.value & WMI_EVENT_MASK); 3025 else 3026 code = -EIO; 3027 3028 kfree(obj); 3029 return code; 3030 } 3031 3032 static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus) 3033 { 3034 unsigned int key_value = 1; 3035 bool autorelease = 1; 3036 int result, orig_code; 3037 3038 orig_code = code; 3039 3040 if (asus->driver->key_filter) { 3041 asus->driver->key_filter(asus->driver, &code, &key_value, 3042 &autorelease); 3043 if (code == ASUS_WMI_KEY_IGNORE) 3044 return; 3045 } 3046 3047 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 3048 code = ASUS_WMI_BRN_UP; 3049 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 3050 code = ASUS_WMI_BRN_DOWN; 3051 3052 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) { 3053 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 3054 asus_wmi_backlight_notify(asus, orig_code); 3055 return; 3056 } 3057 } 3058 3059 if (code == NOTIFY_KBD_BRTUP) { 3060 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1); 3061 return; 3062 } 3063 if (code == NOTIFY_KBD_BRTDWN) { 3064 kbd_led_set_by_kbd(asus, asus->kbd_led_wk - 1); 3065 return; 3066 } 3067 if (code == NOTIFY_KBD_BRTTOGGLE) { 3068 if (asus->kbd_led_wk == asus->kbd_led.max_brightness) 3069 kbd_led_set_by_kbd(asus, 0); 3070 else 3071 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1); 3072 return; 3073 } 3074 3075 if (code == NOTIFY_FNLOCK_TOGGLE) { 3076 asus->fnlock_locked = !asus->fnlock_locked; 3077 asus_wmi_fnlock_update(asus); 3078 return; 3079 } 3080 3081 if (asus->driver->quirks->use_kbd_dock_devid && code == NOTIFY_KBD_DOCK_CHANGE) { 3082 result = asus_wmi_get_devstate_simple(asus, 3083 ASUS_WMI_DEVID_KBD_DOCK); 3084 if (result >= 0) { 3085 input_report_switch(asus->inputdev, SW_TABLET_MODE, 3086 !result); 3087 input_sync(asus->inputdev); 3088 } 3089 return; 3090 } 3091 3092 if (asus->driver->quirks->use_lid_flip_devid && code == NOTIFY_LID_FLIP) { 3093 lid_flip_tablet_mode_get_state(asus); 3094 return; 3095 } 3096 3097 if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) { 3098 fan_boost_mode_switch_next(asus); 3099 return; 3100 } 3101 3102 if (asus->throttle_thermal_policy_available && code == NOTIFY_KBD_TTP) { 3103 throttle_thermal_policy_switch_next(asus); 3104 return; 3105 } 3106 3107 if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle) 3108 return; 3109 3110 if (!sparse_keymap_report_event(asus->inputdev, code, 3111 key_value, autorelease)) 3112 pr_info("Unknown key %x pressed\n", code); 3113 } 3114 3115 static void asus_wmi_notify(u32 value, void *context) 3116 { 3117 struct asus_wmi *asus = context; 3118 int code; 3119 int i; 3120 3121 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) { 3122 code = asus_wmi_get_event_code(value); 3123 if (code < 0) { 3124 pr_warn("Failed to get notify code: %d\n", code); 3125 return; 3126 } 3127 3128 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK) 3129 return; 3130 3131 asus_wmi_handle_event_code(code, asus); 3132 3133 /* 3134 * Double check that queue is present: 3135 * ATK (with queue) uses 0xff, ASUSWMI (without) 0xd2. 3136 */ 3137 if (!asus->wmi_event_queue || value != WMI_EVENT_VALUE_ATK) 3138 return; 3139 } 3140 3141 pr_warn("Failed to process event queue, last code: 0x%x\n", code); 3142 } 3143 3144 static int asus_wmi_notify_queue_flush(struct asus_wmi *asus) 3145 { 3146 int code; 3147 int i; 3148 3149 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) { 3150 code = asus_wmi_get_event_code(WMI_EVENT_VALUE_ATK); 3151 if (code < 0) { 3152 pr_warn("Failed to get event during flush: %d\n", code); 3153 return code; 3154 } 3155 3156 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK) 3157 return 0; 3158 } 3159 3160 pr_warn("Failed to flush event queue\n"); 3161 return -EIO; 3162 } 3163 3164 /* Sysfs **********************************************************************/ 3165 3166 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid, 3167 const char *buf, size_t count) 3168 { 3169 u32 retval; 3170 int err, value; 3171 3172 value = asus_wmi_get_devstate_simple(asus, devid); 3173 if (value < 0) 3174 return value; 3175 3176 err = kstrtoint(buf, 0, &value); 3177 if (err) 3178 return err; 3179 3180 err = asus_wmi_set_devstate(devid, value, &retval); 3181 if (err < 0) 3182 return err; 3183 3184 return count; 3185 } 3186 3187 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf) 3188 { 3189 int value = asus_wmi_get_devstate_simple(asus, devid); 3190 3191 if (value < 0) 3192 return value; 3193 3194 return sprintf(buf, "%d\n", value); 3195 } 3196 3197 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ 3198 static ssize_t show_##_name(struct device *dev, \ 3199 struct device_attribute *attr, \ 3200 char *buf) \ 3201 { \ 3202 struct asus_wmi *asus = dev_get_drvdata(dev); \ 3203 \ 3204 return show_sys_wmi(asus, _cm, buf); \ 3205 } \ 3206 static ssize_t store_##_name(struct device *dev, \ 3207 struct device_attribute *attr, \ 3208 const char *buf, size_t count) \ 3209 { \ 3210 struct asus_wmi *asus = dev_get_drvdata(dev); \ 3211 \ 3212 return store_sys_wmi(asus, _cm, buf, count); \ 3213 } \ 3214 static struct device_attribute dev_attr_##_name = { \ 3215 .attr = { \ 3216 .name = __stringify(_name), \ 3217 .mode = _mode }, \ 3218 .show = show_##_name, \ 3219 .store = store_##_name, \ 3220 } 3221 3222 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD); 3223 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA); 3224 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER); 3225 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME); 3226 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE); 3227 3228 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr, 3229 const char *buf, size_t count) 3230 { 3231 int value, rv; 3232 3233 rv = kstrtoint(buf, 0, &value); 3234 if (rv) 3235 return rv; 3236 3237 if (value < 0 || value > 2) 3238 return -EINVAL; 3239 3240 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL); 3241 if (rv < 0) 3242 return rv; 3243 3244 return count; 3245 } 3246 3247 static DEVICE_ATTR_WO(cpufv); 3248 3249 static struct attribute *platform_attributes[] = { 3250 &dev_attr_cpufv.attr, 3251 &dev_attr_camera.attr, 3252 &dev_attr_cardr.attr, 3253 &dev_attr_touchpad.attr, 3254 &dev_attr_egpu_enable.attr, 3255 &dev_attr_dgpu_disable.attr, 3256 &dev_attr_lid_resume.attr, 3257 &dev_attr_als_enable.attr, 3258 &dev_attr_fan_boost_mode.attr, 3259 &dev_attr_throttle_thermal_policy.attr, 3260 &dev_attr_panel_od.attr, 3261 NULL 3262 }; 3263 3264 static umode_t asus_sysfs_is_visible(struct kobject *kobj, 3265 struct attribute *attr, int idx) 3266 { 3267 struct device *dev = container_of(kobj, struct device, kobj); 3268 struct asus_wmi *asus = dev_get_drvdata(dev); 3269 bool ok = true; 3270 int devid = -1; 3271 3272 if (attr == &dev_attr_camera.attr) 3273 devid = ASUS_WMI_DEVID_CAMERA; 3274 else if (attr == &dev_attr_cardr.attr) 3275 devid = ASUS_WMI_DEVID_CARDREADER; 3276 else if (attr == &dev_attr_touchpad.attr) 3277 devid = ASUS_WMI_DEVID_TOUCHPAD; 3278 else if (attr == &dev_attr_lid_resume.attr) 3279 devid = ASUS_WMI_DEVID_LID_RESUME; 3280 else if (attr == &dev_attr_als_enable.attr) 3281 devid = ASUS_WMI_DEVID_ALS_ENABLE; 3282 else if (attr == &dev_attr_egpu_enable.attr) 3283 ok = asus->egpu_enable_available; 3284 else if (attr == &dev_attr_dgpu_disable.attr) 3285 ok = asus->dgpu_disable_available; 3286 else if (attr == &dev_attr_fan_boost_mode.attr) 3287 ok = asus->fan_boost_mode_available; 3288 else if (attr == &dev_attr_throttle_thermal_policy.attr) 3289 ok = asus->throttle_thermal_policy_available; 3290 else if (attr == &dev_attr_panel_od.attr) 3291 ok = asus->panel_overdrive_available; 3292 3293 if (devid != -1) 3294 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0); 3295 3296 return ok ? attr->mode : 0; 3297 } 3298 3299 static const struct attribute_group platform_attribute_group = { 3300 .is_visible = asus_sysfs_is_visible, 3301 .attrs = platform_attributes 3302 }; 3303 3304 static void asus_wmi_sysfs_exit(struct platform_device *device) 3305 { 3306 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); 3307 } 3308 3309 static int asus_wmi_sysfs_init(struct platform_device *device) 3310 { 3311 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); 3312 } 3313 3314 /* Platform device ************************************************************/ 3315 3316 static int asus_wmi_platform_init(struct asus_wmi *asus) 3317 { 3318 struct device *dev = &asus->platform_device->dev; 3319 char *wmi_uid; 3320 int rv; 3321 3322 /* INIT enable hotkeys on some models */ 3323 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv)) 3324 pr_info("Initialization: %#x\n", rv); 3325 3326 /* We don't know yet what to do with this version... */ 3327 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) { 3328 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF); 3329 asus->spec = rv; 3330 } 3331 3332 /* 3333 * The SFUN method probably allows the original driver to get the list 3334 * of features supported by a given model. For now, 0x0100 or 0x0800 3335 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 3336 * The significance of others is yet to be found. 3337 */ 3338 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) { 3339 pr_info("SFUN value: %#x\n", rv); 3340 asus->sfun = rv; 3341 } 3342 3343 /* 3344 * Eee PC and Notebooks seems to have different method_id for DSTS, 3345 * but it may also be related to the BIOS's SPEC. 3346 * Note, on most Eeepc, there is no way to check if a method exist 3347 * or note, while on notebooks, they returns 0xFFFFFFFE on failure, 3348 * but once again, SPEC may probably be used for that kind of things. 3349 * 3350 * Additionally at least TUF Gaming series laptops return nothing for 3351 * unknown methods, so the detection in this way is not possible. 3352 * 3353 * There is strong indication that only ACPI WMI devices that have _UID 3354 * equal to "ASUSWMI" use DCTS whereas those with "ATK" use DSTS. 3355 */ 3356 wmi_uid = wmi_get_acpi_device_uid(ASUS_WMI_MGMT_GUID); 3357 if (!wmi_uid) 3358 return -ENODEV; 3359 3360 if (!strcmp(wmi_uid, ASUS_ACPI_UID_ASUSWMI)) { 3361 dev_info(dev, "Detected ASUSWMI, use DCTS\n"); 3362 asus->dsts_id = ASUS_WMI_METHODID_DCTS; 3363 } else { 3364 dev_info(dev, "Detected %s, not ASUSWMI, use DSTS\n", wmi_uid); 3365 asus->dsts_id = ASUS_WMI_METHODID_DSTS; 3366 } 3367 3368 /* 3369 * Some devices can have multiple event codes stored in a queue before 3370 * the module load if it was unloaded intermittently after calling 3371 * the INIT method (enables event handling). The WMI notify handler is 3372 * expected to retrieve all event codes until a retrieved code equals 3373 * queue end marker (One or Ones). Old codes are flushed from the queue 3374 * upon module load. Not enabling this when it should be has minimal 3375 * visible impact so fall back if anything goes wrong. 3376 */ 3377 wmi_uid = wmi_get_acpi_device_uid(asus->driver->event_guid); 3378 if (wmi_uid && !strcmp(wmi_uid, ASUS_ACPI_UID_ATK)) { 3379 dev_info(dev, "Detected ATK, enable event queue\n"); 3380 3381 if (!asus_wmi_notify_queue_flush(asus)) 3382 asus->wmi_event_queue = true; 3383 } 3384 3385 /* CWAP allow to define the behavior of the Fn+F2 key, 3386 * this method doesn't seems to be present on Eee PCs */ 3387 if (asus->driver->quirks->wapf >= 0) 3388 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP, 3389 asus->driver->quirks->wapf, NULL); 3390 3391 return 0; 3392 } 3393 3394 /* debugfs ********************************************************************/ 3395 3396 struct asus_wmi_debugfs_node { 3397 struct asus_wmi *asus; 3398 char *name; 3399 int (*show) (struct seq_file *m, void *data); 3400 }; 3401 3402 static int show_dsts(struct seq_file *m, void *data) 3403 { 3404 struct asus_wmi *asus = m->private; 3405 int err; 3406 u32 retval = -1; 3407 3408 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval); 3409 if (err < 0) 3410 return err; 3411 3412 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval); 3413 3414 return 0; 3415 } 3416 3417 static int show_devs(struct seq_file *m, void *data) 3418 { 3419 struct asus_wmi *asus = m->private; 3420 int err; 3421 u32 retval = -1; 3422 3423 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param, 3424 &retval); 3425 if (err < 0) 3426 return err; 3427 3428 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id, 3429 asus->debug.ctrl_param, retval); 3430 3431 return 0; 3432 } 3433 3434 static int show_call(struct seq_file *m, void *data) 3435 { 3436 struct asus_wmi *asus = m->private; 3437 struct bios_args args = { 3438 .arg0 = asus->debug.dev_id, 3439 .arg1 = asus->debug.ctrl_param, 3440 }; 3441 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 3442 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 3443 union acpi_object *obj; 3444 acpi_status status; 3445 3446 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 3447 0, asus->debug.method_id, 3448 &input, &output); 3449 3450 if (ACPI_FAILURE(status)) 3451 return -EIO; 3452 3453 obj = (union acpi_object *)output.pointer; 3454 if (obj && obj->type == ACPI_TYPE_INTEGER) 3455 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id, 3456 asus->debug.dev_id, asus->debug.ctrl_param, 3457 (u32) obj->integer.value); 3458 else 3459 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id, 3460 asus->debug.dev_id, asus->debug.ctrl_param, 3461 obj ? obj->type : -1); 3462 3463 kfree(obj); 3464 3465 return 0; 3466 } 3467 3468 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = { 3469 {NULL, "devs", show_devs}, 3470 {NULL, "dsts", show_dsts}, 3471 {NULL, "call", show_call}, 3472 }; 3473 3474 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file) 3475 { 3476 struct asus_wmi_debugfs_node *node = inode->i_private; 3477 3478 return single_open(file, node->show, node->asus); 3479 } 3480 3481 static const struct file_operations asus_wmi_debugfs_io_ops = { 3482 .owner = THIS_MODULE, 3483 .open = asus_wmi_debugfs_open, 3484 .read = seq_read, 3485 .llseek = seq_lseek, 3486 .release = single_release, 3487 }; 3488 3489 static void asus_wmi_debugfs_exit(struct asus_wmi *asus) 3490 { 3491 debugfs_remove_recursive(asus->debug.root); 3492 } 3493 3494 static void asus_wmi_debugfs_init(struct asus_wmi *asus) 3495 { 3496 int i; 3497 3498 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL); 3499 3500 debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, asus->debug.root, 3501 &asus->debug.method_id); 3502 3503 debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, asus->debug.root, 3504 &asus->debug.dev_id); 3505 3506 debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, asus->debug.root, 3507 &asus->debug.ctrl_param); 3508 3509 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) { 3510 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i]; 3511 3512 node->asus = asus; 3513 debugfs_create_file(node->name, S_IFREG | S_IRUGO, 3514 asus->debug.root, node, 3515 &asus_wmi_debugfs_io_ops); 3516 } 3517 } 3518 3519 /* Init / exit ****************************************************************/ 3520 3521 static int asus_wmi_add(struct platform_device *pdev) 3522 { 3523 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 3524 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 3525 struct asus_wmi *asus; 3526 const char *chassis_type; 3527 acpi_status status; 3528 int err; 3529 u32 result; 3530 3531 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL); 3532 if (!asus) 3533 return -ENOMEM; 3534 3535 asus->driver = wdrv; 3536 asus->platform_device = pdev; 3537 wdrv->platform_device = pdev; 3538 platform_set_drvdata(asus->platform_device, asus); 3539 3540 if (wdrv->detect_quirks) 3541 wdrv->detect_quirks(asus->driver); 3542 3543 err = asus_wmi_platform_init(asus); 3544 if (err) 3545 goto fail_platform; 3546 3547 err = egpu_enable_check_present(asus); 3548 if (err) 3549 goto fail_egpu_enable; 3550 3551 err = dgpu_disable_check_present(asus); 3552 if (err) 3553 goto fail_dgpu_disable; 3554 3555 err = fan_boost_mode_check_present(asus); 3556 if (err) 3557 goto fail_fan_boost_mode; 3558 3559 err = throttle_thermal_policy_check_present(asus); 3560 if (err) 3561 goto fail_throttle_thermal_policy; 3562 else 3563 throttle_thermal_policy_set_default(asus); 3564 3565 err = platform_profile_setup(asus); 3566 if (err) 3567 goto fail_platform_profile_setup; 3568 3569 err = panel_od_check_present(asus); 3570 if (err) 3571 goto fail_panel_od; 3572 3573 err = asus_wmi_sysfs_init(asus->platform_device); 3574 if (err) 3575 goto fail_sysfs; 3576 3577 err = asus_wmi_input_init(asus); 3578 if (err) 3579 goto fail_input; 3580 3581 err = asus_wmi_fan_init(asus); /* probably no problems on error */ 3582 3583 err = asus_wmi_hwmon_init(asus); 3584 if (err) 3585 goto fail_hwmon; 3586 3587 err = asus_wmi_custom_fan_curve_init(asus); 3588 if (err) 3589 goto fail_custom_fan_curve; 3590 3591 err = asus_wmi_led_init(asus); 3592 if (err) 3593 goto fail_leds; 3594 3595 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result); 3596 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT)) 3597 asus->driver->wlan_ctrl_by_user = 1; 3598 3599 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) { 3600 err = asus_wmi_rfkill_init(asus); 3601 if (err) 3602 goto fail_rfkill; 3603 } 3604 3605 if (asus->driver->quirks->wmi_force_als_set) 3606 asus_wmi_set_als(); 3607 3608 /* Some Asus desktop boards export an acpi-video backlight interface, 3609 stop this from showing up */ 3610 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); 3611 if (chassis_type && !strcmp(chassis_type, "3")) 3612 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 3613 3614 if (asus->driver->quirks->wmi_backlight_power) 3615 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 3616 3617 if (asus->driver->quirks->wmi_backlight_native) 3618 acpi_video_set_dmi_backlight_type(acpi_backlight_native); 3619 3620 if (asus->driver->quirks->xusb2pr) 3621 asus_wmi_set_xusb2pr(asus); 3622 3623 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 3624 err = asus_wmi_backlight_init(asus); 3625 if (err && err != -ENODEV) 3626 goto fail_backlight; 3627 } else if (asus->driver->quirks->wmi_backlight_set_devstate) 3628 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL); 3629 3630 if (asus_wmi_has_fnlock_key(asus)) { 3631 asus->fnlock_locked = fnlock_default; 3632 asus_wmi_fnlock_update(asus); 3633 } 3634 3635 status = wmi_install_notify_handler(asus->driver->event_guid, 3636 asus_wmi_notify, asus); 3637 if (ACPI_FAILURE(status)) { 3638 pr_err("Unable to register notify handler - %d\n", status); 3639 err = -ENODEV; 3640 goto fail_wmi_handler; 3641 } 3642 3643 asus_wmi_battery_init(asus); 3644 3645 asus_wmi_debugfs_init(asus); 3646 3647 return 0; 3648 3649 fail_wmi_handler: 3650 asus_wmi_backlight_exit(asus); 3651 fail_backlight: 3652 asus_wmi_rfkill_exit(asus); 3653 fail_rfkill: 3654 asus_wmi_led_exit(asus); 3655 fail_leds: 3656 fail_hwmon: 3657 asus_wmi_input_exit(asus); 3658 fail_input: 3659 asus_wmi_sysfs_exit(asus->platform_device); 3660 fail_sysfs: 3661 fail_throttle_thermal_policy: 3662 fail_custom_fan_curve: 3663 fail_platform_profile_setup: 3664 if (asus->platform_profile_support) 3665 platform_profile_remove(); 3666 fail_fan_boost_mode: 3667 fail_egpu_enable: 3668 fail_dgpu_disable: 3669 fail_platform: 3670 fail_panel_od: 3671 kfree(asus); 3672 return err; 3673 } 3674 3675 static int asus_wmi_remove(struct platform_device *device) 3676 { 3677 struct asus_wmi *asus; 3678 3679 asus = platform_get_drvdata(device); 3680 wmi_remove_notify_handler(asus->driver->event_guid); 3681 asus_wmi_backlight_exit(asus); 3682 asus_wmi_input_exit(asus); 3683 asus_wmi_led_exit(asus); 3684 asus_wmi_rfkill_exit(asus); 3685 asus_wmi_debugfs_exit(asus); 3686 asus_wmi_sysfs_exit(asus->platform_device); 3687 asus_fan_set_auto(asus); 3688 throttle_thermal_policy_set_default(asus); 3689 asus_wmi_battery_exit(asus); 3690 3691 if (asus->platform_profile_support) 3692 platform_profile_remove(); 3693 3694 kfree(asus); 3695 return 0; 3696 } 3697 3698 /* Platform driver - hibernate/resume callbacks *******************************/ 3699 3700 static int asus_hotk_thaw(struct device *device) 3701 { 3702 struct asus_wmi *asus = dev_get_drvdata(device); 3703 3704 if (asus->wlan.rfkill) { 3705 bool wlan; 3706 3707 /* 3708 * Work around bios bug - acpi _PTS turns off the wireless led 3709 * during suspend. Normally it restores it on resume, but 3710 * we should kick it ourselves in case hibernation is aborted. 3711 */ 3712 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 3713 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL); 3714 } 3715 3716 return 0; 3717 } 3718 3719 static int asus_hotk_resume(struct device *device) 3720 { 3721 struct asus_wmi *asus = dev_get_drvdata(device); 3722 3723 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 3724 kbd_led_update(asus); 3725 3726 if (asus_wmi_has_fnlock_key(asus)) 3727 asus_wmi_fnlock_update(asus); 3728 3729 if (asus->driver->quirks->use_lid_flip_devid) 3730 lid_flip_tablet_mode_get_state(asus); 3731 3732 return 0; 3733 } 3734 3735 static int asus_hotk_restore(struct device *device) 3736 { 3737 struct asus_wmi *asus = dev_get_drvdata(device); 3738 int bl; 3739 3740 /* Refresh both wlan rfkill state and pci hotplug */ 3741 if (asus->wlan.rfkill) 3742 asus_rfkill_hotplug(asus); 3743 3744 if (asus->bluetooth.rfkill) { 3745 bl = !asus_wmi_get_devstate_simple(asus, 3746 ASUS_WMI_DEVID_BLUETOOTH); 3747 rfkill_set_sw_state(asus->bluetooth.rfkill, bl); 3748 } 3749 if (asus->wimax.rfkill) { 3750 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX); 3751 rfkill_set_sw_state(asus->wimax.rfkill, bl); 3752 } 3753 if (asus->wwan3g.rfkill) { 3754 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G); 3755 rfkill_set_sw_state(asus->wwan3g.rfkill, bl); 3756 } 3757 if (asus->gps.rfkill) { 3758 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS); 3759 rfkill_set_sw_state(asus->gps.rfkill, bl); 3760 } 3761 if (asus->uwb.rfkill) { 3762 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB); 3763 rfkill_set_sw_state(asus->uwb.rfkill, bl); 3764 } 3765 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 3766 kbd_led_update(asus); 3767 3768 if (asus_wmi_has_fnlock_key(asus)) 3769 asus_wmi_fnlock_update(asus); 3770 3771 if (asus->driver->quirks->use_lid_flip_devid) 3772 lid_flip_tablet_mode_get_state(asus); 3773 3774 return 0; 3775 } 3776 3777 static const struct dev_pm_ops asus_pm_ops = { 3778 .thaw = asus_hotk_thaw, 3779 .restore = asus_hotk_restore, 3780 .resume = asus_hotk_resume, 3781 }; 3782 3783 /* Registration ***************************************************************/ 3784 3785 static int asus_wmi_probe(struct platform_device *pdev) 3786 { 3787 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 3788 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 3789 int ret; 3790 3791 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 3792 pr_warn("ASUS Management GUID not found\n"); 3793 return -ENODEV; 3794 } 3795 3796 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) { 3797 pr_warn("ASUS Event GUID not found\n"); 3798 return -ENODEV; 3799 } 3800 3801 if (wdrv->probe) { 3802 ret = wdrv->probe(pdev); 3803 if (ret) 3804 return ret; 3805 } 3806 3807 return asus_wmi_add(pdev); 3808 } 3809 3810 static bool used; 3811 3812 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver) 3813 { 3814 struct platform_driver *platform_driver; 3815 struct platform_device *platform_device; 3816 3817 if (used) 3818 return -EBUSY; 3819 3820 platform_driver = &driver->platform_driver; 3821 platform_driver->remove = asus_wmi_remove; 3822 platform_driver->driver.owner = driver->owner; 3823 platform_driver->driver.name = driver->name; 3824 platform_driver->driver.pm = &asus_pm_ops; 3825 3826 platform_device = platform_create_bundle(platform_driver, 3827 asus_wmi_probe, 3828 NULL, 0, NULL, 0); 3829 if (IS_ERR(platform_device)) 3830 return PTR_ERR(platform_device); 3831 3832 used = true; 3833 return 0; 3834 } 3835 EXPORT_SYMBOL_GPL(asus_wmi_register_driver); 3836 3837 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver) 3838 { 3839 platform_device_unregister(driver->platform_device); 3840 platform_driver_unregister(&driver->platform_driver); 3841 used = false; 3842 } 3843 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver); 3844 3845 static int __init asus_wmi_init(void) 3846 { 3847 pr_info("ASUS WMI generic driver loaded\n"); 3848 return 0; 3849 } 3850 3851 static void __exit asus_wmi_exit(void) 3852 { 3853 pr_info("ASUS WMI generic driver unloaded\n"); 3854 } 3855 3856 module_init(asus_wmi_init); 3857 module_exit(asus_wmi_exit); 3858