1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * System76 ACPI Driver 4 * 5 * Copyright (C) 2023 System76 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 12#include <linux/acpi.h> 13#include <linux/hwmon.h> 14#include <linux/hwmon-sysfs.h> 15#include <linux/init.h> 16#include <linux/input.h> 17#include <linux/kernel.h> 18#include <linux/leds.h> 19#include <linux/module.h> 20#include <linux/pci_ids.h> 21#include <linux/power_supply.h> 22#include <linux/sysfs.h> 23#include <linux/types.h> 24 25#include <acpi/battery.h> 26 27enum kbled_type { 28 KBLED_NONE, 29 KBLED_WHITE, 30 KBLED_RGB, 31}; 32 33struct system76_data { 34 struct acpi_device *acpi_dev; 35 struct led_classdev ap_led; 36 struct led_classdev kb_led; 37 enum led_brightness kb_brightness; 38 enum led_brightness kb_toggle_brightness; 39 int kb_color; 40 struct device *therm; 41 union acpi_object *nfan; 42 union acpi_object *ntmp; 43 struct input_dev *input; 44 bool has_open_ec; 45 enum kbled_type kbled_type; 46}; 47 48static const struct acpi_device_id device_ids[] = { 49 {"17761776", 0}, 50 {"", 0}, 51}; 52MODULE_DEVICE_TABLE(acpi, device_ids); 53 54// Array of keyboard LED brightness levels 55static const enum led_brightness kb_levels[] = { 56 48, 57 72, 58 96, 59 144, 60 192, 61 255 62}; 63 64// Array of keyboard LED colors in 24-bit RGB format 65static const int kb_colors[] = { 66 0xFFFFFF, 67 0x0000FF, 68 0xFF0000, 69 0xFF00FF, 70 0x00FF00, 71 0x00FFFF, 72 0xFFFF00 73}; 74 75// Get a System76 ACPI device value by name 76static int system76_get(struct system76_data *data, char *method) 77{ 78 acpi_handle handle; 79 acpi_status status; 80 unsigned long long ret = 0; 81 82 handle = acpi_device_handle(data->acpi_dev); 83 status = acpi_evaluate_integer(handle, method, NULL, &ret); 84 if (ACPI_SUCCESS(status)) 85 return ret; 86 return -ENODEV; 87} 88 89// Get a System76 ACPI device value by name with index 90static int system76_get_index(struct system76_data *data, char *method, int index) 91{ 92 union acpi_object obj; 93 struct acpi_object_list obj_list; 94 acpi_handle handle; 95 acpi_status status; 96 unsigned long long ret = 0; 97 98 obj.type = ACPI_TYPE_INTEGER; 99 obj.integer.value = index; 100 obj_list.count = 1; 101 obj_list.pointer = &obj; 102 103 handle = acpi_device_handle(data->acpi_dev); 104 status = acpi_evaluate_integer(handle, method, &obj_list, &ret); 105 if (ACPI_SUCCESS(status)) 106 return ret; 107 return -ENODEV; 108} 109 110// Get a System76 ACPI device object by name 111static int system76_get_object(struct system76_data *data, char *method, union acpi_object **obj) 112{ 113 acpi_handle handle; 114 acpi_status status; 115 struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL }; 116 117 handle = acpi_device_handle(data->acpi_dev); 118 status = acpi_evaluate_object(handle, method, NULL, &buf); 119 if (ACPI_SUCCESS(status)) { 120 *obj = buf.pointer; 121 return 0; 122 } 123 124 return -ENODEV; 125} 126 127// Get a name from a System76 ACPI device object 128static char *system76_name(union acpi_object *obj, int index) 129{ 130 if (obj && obj->type == ACPI_TYPE_PACKAGE && index <= obj->package.count) { 131 if (obj->package.elements[index].type == ACPI_TYPE_STRING) 132 return obj->package.elements[index].string.pointer; 133 } 134 135 return NULL; 136} 137 138// Set a System76 ACPI device value by name 139static int system76_set(struct system76_data *data, char *method, int value) 140{ 141 union acpi_object obj; 142 struct acpi_object_list obj_list; 143 acpi_handle handle; 144 acpi_status status; 145 146 obj.type = ACPI_TYPE_INTEGER; 147 obj.integer.value = value; 148 obj_list.count = 1; 149 obj_list.pointer = &obj; 150 handle = acpi_device_handle(data->acpi_dev); 151 status = acpi_evaluate_object(handle, method, &obj_list, NULL); 152 if (ACPI_SUCCESS(status)) 153 return 0; 154 else 155 return -1; 156} 157 158#define BATTERY_THRESHOLD_INVALID 0xFF 159 160enum { 161 THRESHOLD_START, 162 THRESHOLD_END, 163}; 164 165static ssize_t battery_get_threshold(int which, char *buf) 166{ 167 struct acpi_object_list input; 168 union acpi_object param; 169 acpi_handle handle; 170 acpi_status status; 171 unsigned long long ret = BATTERY_THRESHOLD_INVALID; 172 173 handle = ec_get_handle(); 174 if (!handle) 175 return -ENODEV; 176 177 input.count = 1; 178 input.pointer = ¶m; 179 // Start/stop selection 180 param.type = ACPI_TYPE_INTEGER; 181 param.integer.value = which; 182 183 status = acpi_evaluate_integer(handle, "GBCT", &input, &ret); 184 if (ACPI_FAILURE(status)) 185 return -EIO; 186 if (ret == BATTERY_THRESHOLD_INVALID) 187 return -EINVAL; 188 189 return sysfs_emit(buf, "%d\n", (int)ret); 190} 191 192static ssize_t battery_set_threshold(int which, const char *buf, size_t count) 193{ 194 struct acpi_object_list input; 195 union acpi_object params[2]; 196 acpi_handle handle; 197 acpi_status status; 198 unsigned int value; 199 int ret; 200 201 handle = ec_get_handle(); 202 if (!handle) 203 return -ENODEV; 204 205 ret = kstrtouint(buf, 10, &value); 206 if (ret) 207 return ret; 208 209 if (value > 100) 210 return -EINVAL; 211 212 input.count = 2; 213 input.pointer = params; 214 // Start/stop selection 215 params[0].type = ACPI_TYPE_INTEGER; 216 params[0].integer.value = which; 217 // Threshold value 218 params[1].type = ACPI_TYPE_INTEGER; 219 params[1].integer.value = value; 220 221 status = acpi_evaluate_object(handle, "SBCT", &input, NULL); 222 if (ACPI_FAILURE(status)) 223 return -EIO; 224 225 return count; 226} 227 228static ssize_t charge_control_start_threshold_show(struct device *dev, 229 struct device_attribute *attr, char *buf) 230{ 231 return battery_get_threshold(THRESHOLD_START, buf); 232} 233 234static ssize_t charge_control_start_threshold_store(struct device *dev, 235 struct device_attribute *attr, const char *buf, size_t count) 236{ 237 return battery_set_threshold(THRESHOLD_START, buf, count); 238} 239 240static DEVICE_ATTR_RW(charge_control_start_threshold); 241 242static ssize_t charge_control_end_threshold_show(struct device *dev, 243 struct device_attribute *attr, char *buf) 244{ 245 return battery_get_threshold(THRESHOLD_END, buf); 246} 247 248static ssize_t charge_control_end_threshold_store(struct device *dev, 249 struct device_attribute *attr, const char *buf, size_t count) 250{ 251 return battery_set_threshold(THRESHOLD_END, buf, count); 252} 253 254static DEVICE_ATTR_RW(charge_control_end_threshold); 255 256static struct attribute *system76_battery_attrs[] = { 257 &dev_attr_charge_control_start_threshold.attr, 258 &dev_attr_charge_control_end_threshold.attr, 259 NULL, 260}; 261 262ATTRIBUTE_GROUPS(system76_battery); 263 264static int system76_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook) 265{ 266 // System76 EC only supports 1 battery 267 if (strcmp(battery->desc->name, "BAT0") != 0) 268 return -ENODEV; 269 270 if (device_add_groups(&battery->dev, system76_battery_groups)) 271 return -ENODEV; 272 273 return 0; 274} 275 276static int system76_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook) 277{ 278 device_remove_groups(&battery->dev, system76_battery_groups); 279 return 0; 280} 281 282static struct acpi_battery_hook system76_battery_hook = { 283 .add_battery = system76_battery_add, 284 .remove_battery = system76_battery_remove, 285 .name = "System76 Battery Extension", 286}; 287 288static void system76_battery_init(void) 289{ 290 battery_hook_register(&system76_battery_hook); 291} 292 293static void system76_battery_exit(void) 294{ 295 battery_hook_unregister(&system76_battery_hook); 296} 297 298// Get the airplane mode LED brightness 299static enum led_brightness ap_led_get(struct led_classdev *led) 300{ 301 struct system76_data *data; 302 int value; 303 304 data = container_of(led, struct system76_data, ap_led); 305 value = system76_get(data, "GAPL"); 306 if (value > 0) 307 return (enum led_brightness)value; 308 else 309 return LED_OFF; 310} 311 312// Set the airplane mode LED brightness 313static int ap_led_set(struct led_classdev *led, enum led_brightness value) 314{ 315 struct system76_data *data; 316 317 data = container_of(led, struct system76_data, ap_led); 318 return system76_set(data, "SAPL", value == LED_OFF ? 0 : 1); 319} 320 321// Get the last set keyboard LED brightness 322static enum led_brightness kb_led_get(struct led_classdev *led) 323{ 324 struct system76_data *data; 325 326 data = container_of(led, struct system76_data, kb_led); 327 return data->kb_brightness; 328} 329 330// Set the keyboard LED brightness 331static int kb_led_set(struct led_classdev *led, enum led_brightness value) 332{ 333 struct system76_data *data; 334 335 data = container_of(led, struct system76_data, kb_led); 336 data->kb_brightness = value; 337 if (acpi_has_method(acpi_device_handle(data->acpi_dev), "GKBK")) { 338 return system76_set(data, "SKBB", (int)data->kb_brightness); 339 } else { 340 return system76_set(data, "SKBL", (int)data->kb_brightness); 341 } 342} 343 344// Get the last set keyboard LED color 345static ssize_t kb_led_color_show( 346 struct device *dev, 347 struct device_attribute *dev_attr, 348 char *buf) 349{ 350 struct led_classdev *led; 351 struct system76_data *data; 352 353 led = dev_get_drvdata(dev); 354 data = container_of(led, struct system76_data, kb_led); 355 return sysfs_emit(buf, "%06X\n", data->kb_color); 356} 357 358// Set the keyboard LED color 359static ssize_t kb_led_color_store( 360 struct device *dev, 361 struct device_attribute *dev_attr, 362 const char *buf, 363 size_t size) 364{ 365 struct led_classdev *led; 366 struct system76_data *data; 367 unsigned int val; 368 int ret; 369 370 led = dev_get_drvdata(dev); 371 data = container_of(led, struct system76_data, kb_led); 372 ret = kstrtouint(buf, 16, &val); 373 if (ret) 374 return ret; 375 if (val > 0xFFFFFF) 376 return -EINVAL; 377 data->kb_color = (int)val; 378 system76_set(data, "SKBC", data->kb_color); 379 380 return size; 381} 382 383static struct device_attribute dev_attr_kb_led_color = { 384 .attr = { 385 .name = "color", 386 .mode = 0644, 387 }, 388 .show = kb_led_color_show, 389 .store = kb_led_color_store, 390}; 391 392static struct attribute *system76_kb_led_color_attrs[] = { 393 &dev_attr_kb_led_color.attr, 394 NULL, 395}; 396 397ATTRIBUTE_GROUPS(system76_kb_led_color); 398 399// Notify that the keyboard LED was changed by hardware 400static void kb_led_notify(struct system76_data *data) 401{ 402 led_classdev_notify_brightness_hw_changed( 403 &data->kb_led, 404 data->kb_brightness 405 ); 406} 407 408// Read keyboard LED brightness as set by hardware 409static void kb_led_hotkey_hardware(struct system76_data *data) 410{ 411 int value; 412 413 if (acpi_has_method(acpi_device_handle(data->acpi_dev), "GKBK")) { 414 value = system76_get(data, "GKBB"); 415 } else { 416 value = system76_get(data, "GKBL"); 417 } 418 419 if (value < 0) 420 return; 421 data->kb_brightness = value; 422 kb_led_notify(data); 423} 424 425// Toggle the keyboard LED 426static void kb_led_hotkey_toggle(struct system76_data *data) 427{ 428 if (data->kb_brightness > 0) { 429 data->kb_toggle_brightness = data->kb_brightness; 430 kb_led_set(&data->kb_led, 0); 431 } else { 432 kb_led_set(&data->kb_led, data->kb_toggle_brightness); 433 } 434 kb_led_notify(data); 435} 436 437// Decrease the keyboard LED brightness 438static void kb_led_hotkey_down(struct system76_data *data) 439{ 440 int i; 441 442 if (data->kb_brightness > 0) { 443 for (i = ARRAY_SIZE(kb_levels); i > 0; i--) { 444 if (kb_levels[i - 1] < data->kb_brightness) { 445 kb_led_set(&data->kb_led, kb_levels[i - 1]); 446 break; 447 } 448 } 449 } else { 450 kb_led_set(&data->kb_led, data->kb_toggle_brightness); 451 } 452 kb_led_notify(data); 453} 454 455// Increase the keyboard LED brightness 456static void kb_led_hotkey_up(struct system76_data *data) 457{ 458 int i; 459 460 if (data->kb_brightness > 0) { 461 for (i = 0; i < ARRAY_SIZE(kb_levels); i++) { 462 if (kb_levels[i] > data->kb_brightness) { 463 kb_led_set(&data->kb_led, kb_levels[i]); 464 break; 465 } 466 } 467 } else { 468 kb_led_set(&data->kb_led, data->kb_toggle_brightness); 469 } 470 kb_led_notify(data); 471} 472 473// Cycle the keyboard LED color 474static void kb_led_hotkey_color(struct system76_data *data) 475{ 476 int i; 477 478 if (data->kbled_type != KBLED_RGB) 479 return; 480 481 if (data->kb_brightness > 0) { 482 for (i = 0; i < ARRAY_SIZE(kb_colors); i++) { 483 if (kb_colors[i] == data->kb_color) 484 break; 485 } 486 i += 1; 487 if (i >= ARRAY_SIZE(kb_colors)) 488 i = 0; 489 data->kb_color = kb_colors[i]; 490 system76_set(data, "SKBC", data->kb_color); 491 } else { 492 kb_led_set(&data->kb_led, data->kb_toggle_brightness); 493 } 494 kb_led_notify(data); 495} 496 497static umode_t thermal_is_visible(const void *drvdata, enum hwmon_sensor_types type, 498 u32 attr, int channel) 499{ 500 const struct system76_data *data = drvdata; 501 502 switch (type) { 503 case hwmon_fan: 504 case hwmon_pwm: 505 if (system76_name(data->nfan, channel)) 506 return 0444; 507 break; 508 509 case hwmon_temp: 510 if (system76_name(data->ntmp, channel)) 511 return 0444; 512 break; 513 514 default: 515 return 0; 516 } 517 518 return 0; 519} 520 521static int thermal_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, 522 int channel, long *val) 523{ 524 struct system76_data *data = dev_get_drvdata(dev); 525 int raw; 526 527 switch (type) { 528 case hwmon_fan: 529 if (attr == hwmon_fan_input) { 530 raw = system76_get_index(data, "GFAN", channel); 531 if (raw < 0) 532 return raw; 533 *val = (raw >> 8) & 0xFFFF; 534 return 0; 535 } 536 break; 537 538 case hwmon_pwm: 539 if (attr == hwmon_pwm_input) { 540 raw = system76_get_index(data, "GFAN", channel); 541 if (raw < 0) 542 return raw; 543 *val = raw & 0xFF; 544 return 0; 545 } 546 break; 547 548 case hwmon_temp: 549 if (attr == hwmon_temp_input) { 550 raw = system76_get_index(data, "GTMP", channel); 551 if (raw < 0) 552 return raw; 553 *val = raw * 1000; 554 return 0; 555 } 556 break; 557 558 default: 559 return -EOPNOTSUPP; 560 } 561 562 return -EOPNOTSUPP; 563} 564 565static int thermal_read_string(struct device *dev, enum hwmon_sensor_types type, u32 attr, 566 int channel, const char **str) 567{ 568 struct system76_data *data = dev_get_drvdata(dev); 569 570 switch (type) { 571 case hwmon_fan: 572 if (attr == hwmon_fan_label) { 573 *str = system76_name(data->nfan, channel); 574 if (*str) 575 return 0; 576 } 577 break; 578 579 case hwmon_temp: 580 if (attr == hwmon_temp_label) { 581 *str = system76_name(data->ntmp, channel); 582 if (*str) 583 return 0; 584 } 585 break; 586 587 default: 588 return -EOPNOTSUPP; 589 } 590 591 return -EOPNOTSUPP; 592} 593 594static const struct hwmon_ops thermal_ops = { 595 .is_visible = thermal_is_visible, 596 .read = thermal_read, 597 .read_string = thermal_read_string, 598}; 599 600// Allocate up to 8 fans and temperatures 601static const struct hwmon_channel_info * const thermal_channel_info[] = { 602 HWMON_CHANNEL_INFO(fan, 603 HWMON_F_INPUT | HWMON_F_LABEL, 604 HWMON_F_INPUT | HWMON_F_LABEL, 605 HWMON_F_INPUT | HWMON_F_LABEL, 606 HWMON_F_INPUT | HWMON_F_LABEL, 607 HWMON_F_INPUT | HWMON_F_LABEL, 608 HWMON_F_INPUT | HWMON_F_LABEL, 609 HWMON_F_INPUT | HWMON_F_LABEL, 610 HWMON_F_INPUT | HWMON_F_LABEL), 611 HWMON_CHANNEL_INFO(pwm, 612 HWMON_PWM_INPUT, 613 HWMON_PWM_INPUT, 614 HWMON_PWM_INPUT, 615 HWMON_PWM_INPUT, 616 HWMON_PWM_INPUT, 617 HWMON_PWM_INPUT, 618 HWMON_PWM_INPUT, 619 HWMON_PWM_INPUT), 620 HWMON_CHANNEL_INFO(temp, 621 HWMON_T_INPUT | HWMON_T_LABEL, 622 HWMON_T_INPUT | HWMON_T_LABEL, 623 HWMON_T_INPUT | HWMON_T_LABEL, 624 HWMON_T_INPUT | HWMON_T_LABEL, 625 HWMON_T_INPUT | HWMON_T_LABEL, 626 HWMON_T_INPUT | HWMON_T_LABEL, 627 HWMON_T_INPUT | HWMON_T_LABEL, 628 HWMON_T_INPUT | HWMON_T_LABEL), 629 NULL 630}; 631 632static const struct hwmon_chip_info thermal_chip_info = { 633 .ops = &thermal_ops, 634 .info = thermal_channel_info, 635}; 636 637static void input_key(struct system76_data *data, unsigned int code) 638{ 639 input_report_key(data->input, code, 1); 640 input_sync(data->input); 641 642 input_report_key(data->input, code, 0); 643 input_sync(data->input); 644} 645 646// Handle ACPI notification 647static void system76_notify(struct acpi_device *acpi_dev, u32 event) 648{ 649 struct system76_data *data; 650 651 data = acpi_driver_data(acpi_dev); 652 switch (event) { 653 case 0x80: 654 kb_led_hotkey_hardware(data); 655 break; 656 case 0x81: 657 kb_led_hotkey_toggle(data); 658 break; 659 case 0x82: 660 kb_led_hotkey_down(data); 661 break; 662 case 0x83: 663 kb_led_hotkey_up(data); 664 break; 665 case 0x84: 666 kb_led_hotkey_color(data); 667 break; 668 case 0x85: 669 input_key(data, KEY_SCREENLOCK); 670 break; 671 } 672} 673 674// Add a System76 ACPI device 675static int system76_add(struct acpi_device *acpi_dev) 676{ 677 struct system76_data *data; 678 int err; 679 680 data = devm_kzalloc(&acpi_dev->dev, sizeof(*data), GFP_KERNEL); 681 if (!data) 682 return -ENOMEM; 683 acpi_dev->driver_data = data; 684 data->acpi_dev = acpi_dev; 685 686 // Some models do not run open EC firmware. Check for an ACPI method 687 // that only exists on open EC to guard functionality specific to it. 688 data->has_open_ec = acpi_has_method(acpi_device_handle(data->acpi_dev), "NFAN"); 689 690 err = system76_get(data, "INIT"); 691 if (err) 692 return err; 693 data->ap_led.name = "system76_acpi::airplane"; 694 data->ap_led.flags = LED_CORE_SUSPENDRESUME; 695 data->ap_led.brightness_get = ap_led_get; 696 data->ap_led.brightness_set_blocking = ap_led_set; 697 data->ap_led.max_brightness = 1; 698 data->ap_led.default_trigger = "rfkill-none"; 699 err = devm_led_classdev_register(&acpi_dev->dev, &data->ap_led); 700 if (err) 701 return err; 702 703 data->kb_led.name = "system76_acpi::kbd_backlight"; 704 data->kb_led.flags = LED_BRIGHT_HW_CHANGED | LED_CORE_SUSPENDRESUME; 705 data->kb_led.brightness_get = kb_led_get; 706 data->kb_led.brightness_set_blocking = kb_led_set; 707 if (acpi_has_method(acpi_device_handle(data->acpi_dev), "GKBK")) { 708 // Use the new ACPI methods 709 data->kbled_type = system76_get(data, "GKBK"); 710 711 switch (data->kbled_type) { 712 case KBLED_NONE: 713 // Nothing to do: Device will not be registered. 714 break; 715 case KBLED_WHITE: 716 data->kb_led.max_brightness = 255; 717 data->kb_toggle_brightness = 72; 718 break; 719 case KBLED_RGB: 720 data->kb_led.max_brightness = 255; 721 data->kb_led.groups = system76_kb_led_color_groups; 722 data->kb_toggle_brightness = 72; 723 data->kb_color = 0xffffff; 724 system76_set(data, "SKBC", data->kb_color); 725 break; 726 } 727 } else { 728 // Use the old ACPI methods 729 if (acpi_has_method(acpi_device_handle(data->acpi_dev), "SKBC")) { 730 data->kbled_type = KBLED_RGB; 731 data->kb_led.max_brightness = 255; 732 data->kb_led.groups = system76_kb_led_color_groups; 733 data->kb_toggle_brightness = 72; 734 data->kb_color = 0xffffff; 735 system76_set(data, "SKBC", data->kb_color); 736 } else { 737 data->kbled_type = KBLED_WHITE; 738 data->kb_led.max_brightness = 5; 739 } 740 } 741 742 if (data->kbled_type != KBLED_NONE) { 743 err = devm_led_classdev_register(&acpi_dev->dev, &data->kb_led); 744 if (err) 745 return err; 746 } 747 748 data->input = devm_input_allocate_device(&acpi_dev->dev); 749 if (!data->input) 750 return -ENOMEM; 751 752 data->input->name = "System76 ACPI Hotkeys"; 753 data->input->phys = "system76_acpi/input0"; 754 data->input->id.bustype = BUS_HOST; 755 data->input->dev.parent = &acpi_dev->dev; 756 input_set_capability(data->input, EV_KEY, KEY_SCREENLOCK); 757 758 err = input_register_device(data->input); 759 if (err) 760 goto error; 761 762 if (data->has_open_ec) { 763 err = system76_get_object(data, "NFAN", &data->nfan); 764 if (err) 765 goto error; 766 767 err = system76_get_object(data, "NTMP", &data->ntmp); 768 if (err) 769 goto error; 770 771 data->therm = devm_hwmon_device_register_with_info(&acpi_dev->dev, 772 "system76_acpi", data, &thermal_chip_info, NULL); 773 err = PTR_ERR_OR_ZERO(data->therm); 774 if (err) 775 goto error; 776 777 system76_battery_init(); 778 } 779 780 return 0; 781 782error: 783 if (data->has_open_ec) { 784 kfree(data->ntmp); 785 kfree(data->nfan); 786 } 787 return err; 788} 789 790// Remove a System76 ACPI device 791static void system76_remove(struct acpi_device *acpi_dev) 792{ 793 struct system76_data *data; 794 795 data = acpi_driver_data(acpi_dev); 796 797 if (data->has_open_ec) { 798 system76_battery_exit(); 799 kfree(data->nfan); 800 kfree(data->ntmp); 801 } 802 803 devm_led_classdev_unregister(&acpi_dev->dev, &data->ap_led); 804 devm_led_classdev_unregister(&acpi_dev->dev, &data->kb_led); 805 806 system76_get(data, "FINI"); 807} 808 809static struct acpi_driver system76_driver = { 810 .name = "System76 ACPI Driver", 811 .class = "hotkey", 812 .ids = device_ids, 813 .ops = { 814 .add = system76_add, 815 .remove = system76_remove, 816 .notify = system76_notify, 817 }, 818}; 819module_acpi_driver(system76_driver); 820 821MODULE_DESCRIPTION("System76 ACPI Driver"); 822MODULE_AUTHOR("Jeremy Soller <jeremy@system76.com>"); 823MODULE_LICENSE("GPL"); 824