1fd13c862SJeremy Soller // SPDX-License-Identifier: GPL-2.0+ 2fd13c862SJeremy Soller /* 3fd13c862SJeremy Soller * System76 ACPI Driver 4fd13c862SJeremy Soller * 5fd13c862SJeremy Soller * Copyright (C) 2019 System76 6fd13c862SJeremy Soller * 7fd13c862SJeremy Soller * This program is free software; you can redistribute it and/or modify 8fd13c862SJeremy Soller * it under the terms of the GNU General Public License version 2 as 9fd13c862SJeremy Soller * published by the Free Software Foundation. 10fd13c862SJeremy Soller */ 11fd13c862SJeremy Soller 12fd13c862SJeremy Soller #include <linux/acpi.h> 1395563d45SJeremy Soller #include <linux/hwmon.h> 1495563d45SJeremy Soller #include <linux/hwmon-sysfs.h> 15fd13c862SJeremy Soller #include <linux/init.h> 160de30fc6SJeremy Soller #include <linux/input.h> 17fd13c862SJeremy Soller #include <linux/kernel.h> 18fd13c862SJeremy Soller #include <linux/leds.h> 19fd13c862SJeremy Soller #include <linux/module.h> 20fd13c862SJeremy Soller #include <linux/pci_ids.h> 2176f7eba3STim Crawford #include <linux/power_supply.h> 2276f7eba3STim Crawford #include <linux/sysfs.h> 23fd13c862SJeremy Soller #include <linux/types.h> 24fd13c862SJeremy Soller 2576f7eba3STim Crawford #include <acpi/battery.h> 2676f7eba3STim Crawford 27fd13c862SJeremy Soller struct system76_data { 28fd13c862SJeremy Soller struct acpi_device *acpi_dev; 29fd13c862SJeremy Soller struct led_classdev ap_led; 30fd13c862SJeremy Soller struct led_classdev kb_led; 31fd13c862SJeremy Soller enum led_brightness kb_brightness; 32fd13c862SJeremy Soller enum led_brightness kb_toggle_brightness; 33fd13c862SJeremy Soller int kb_color; 3495563d45SJeremy Soller struct device *therm; 3595563d45SJeremy Soller union acpi_object *nfan; 3695563d45SJeremy Soller union acpi_object *ntmp; 370de30fc6SJeremy Soller struct input_dev *input; 38c4499272STim Crawford bool has_open_ec; 39fd13c862SJeremy Soller }; 40fd13c862SJeremy Soller 41fd13c862SJeremy Soller static const struct acpi_device_id device_ids[] = { 42fd13c862SJeremy Soller {"17761776", 0}, 43fd13c862SJeremy Soller {"", 0}, 44fd13c862SJeremy Soller }; 45fd13c862SJeremy Soller MODULE_DEVICE_TABLE(acpi, device_ids); 46fd13c862SJeremy Soller 47fd13c862SJeremy Soller // Array of keyboard LED brightness levels 48fd13c862SJeremy Soller static const enum led_brightness kb_levels[] = { 49fd13c862SJeremy Soller 48, 50fd13c862SJeremy Soller 72, 51fd13c862SJeremy Soller 96, 52fd13c862SJeremy Soller 144, 53fd13c862SJeremy Soller 192, 54fd13c862SJeremy Soller 255 55fd13c862SJeremy Soller }; 56fd13c862SJeremy Soller 57fd13c862SJeremy Soller // Array of keyboard LED colors in 24-bit RGB format 58fd13c862SJeremy Soller static const int kb_colors[] = { 59fd13c862SJeremy Soller 0xFFFFFF, 60fd13c862SJeremy Soller 0x0000FF, 61fd13c862SJeremy Soller 0xFF0000, 62fd13c862SJeremy Soller 0xFF00FF, 63fd13c862SJeremy Soller 0x00FF00, 64fd13c862SJeremy Soller 0x00FFFF, 65fd13c862SJeremy Soller 0xFFFF00 66fd13c862SJeremy Soller }; 67fd13c862SJeremy Soller 68fd13c862SJeremy Soller // Get a System76 ACPI device value by name 69fd13c862SJeremy Soller static int system76_get(struct system76_data *data, char *method) 70fd13c862SJeremy Soller { 71fd13c862SJeremy Soller acpi_handle handle; 72fd13c862SJeremy Soller acpi_status status; 73fd13c862SJeremy Soller unsigned long long ret = 0; 74fd13c862SJeremy Soller 75fd13c862SJeremy Soller handle = acpi_device_handle(data->acpi_dev); 76fd13c862SJeremy Soller status = acpi_evaluate_integer(handle, method, NULL, &ret); 77fd13c862SJeremy Soller if (ACPI_SUCCESS(status)) 7895563d45SJeremy Soller return ret; 7995563d45SJeremy Soller return -ENODEV; 8095563d45SJeremy Soller } 8195563d45SJeremy Soller 8295563d45SJeremy Soller // Get a System76 ACPI device value by name with index 8395563d45SJeremy Soller static int system76_get_index(struct system76_data *data, char *method, int index) 8495563d45SJeremy Soller { 8595563d45SJeremy Soller union acpi_object obj; 8695563d45SJeremy Soller struct acpi_object_list obj_list; 8795563d45SJeremy Soller acpi_handle handle; 8895563d45SJeremy Soller acpi_status status; 8995563d45SJeremy Soller unsigned long long ret = 0; 9095563d45SJeremy Soller 9195563d45SJeremy Soller obj.type = ACPI_TYPE_INTEGER; 9295563d45SJeremy Soller obj.integer.value = index; 9395563d45SJeremy Soller obj_list.count = 1; 9495563d45SJeremy Soller obj_list.pointer = &obj; 9595563d45SJeremy Soller 9695563d45SJeremy Soller handle = acpi_device_handle(data->acpi_dev); 9795563d45SJeremy Soller status = acpi_evaluate_integer(handle, method, &obj_list, &ret); 9895563d45SJeremy Soller if (ACPI_SUCCESS(status)) 9995563d45SJeremy Soller return ret; 10095563d45SJeremy Soller return -ENODEV; 10195563d45SJeremy Soller } 10295563d45SJeremy Soller 10395563d45SJeremy Soller // Get a System76 ACPI device object by name 10495563d45SJeremy Soller static int system76_get_object(struct system76_data *data, char *method, union acpi_object **obj) 10595563d45SJeremy Soller { 10695563d45SJeremy Soller acpi_handle handle; 10795563d45SJeremy Soller acpi_status status; 10895563d45SJeremy Soller struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL }; 10995563d45SJeremy Soller 11095563d45SJeremy Soller handle = acpi_device_handle(data->acpi_dev); 11195563d45SJeremy Soller status = acpi_evaluate_object(handle, method, NULL, &buf); 11295563d45SJeremy Soller if (ACPI_SUCCESS(status)) { 11395563d45SJeremy Soller *obj = buf.pointer; 11495563d45SJeremy Soller return 0; 11595563d45SJeremy Soller } 11695563d45SJeremy Soller 11795563d45SJeremy Soller return -ENODEV; 11895563d45SJeremy Soller } 11995563d45SJeremy Soller 12095563d45SJeremy Soller // Get a name from a System76 ACPI device object 12195563d45SJeremy Soller static char *system76_name(union acpi_object *obj, int index) 12295563d45SJeremy Soller { 12395563d45SJeremy Soller if (obj && obj->type == ACPI_TYPE_PACKAGE && index <= obj->package.count) { 12495563d45SJeremy Soller if (obj->package.elements[index].type == ACPI_TYPE_STRING) 12595563d45SJeremy Soller return obj->package.elements[index].string.pointer; 12695563d45SJeremy Soller } 12795563d45SJeremy Soller 12895563d45SJeremy Soller return NULL; 129fd13c862SJeremy Soller } 130fd13c862SJeremy Soller 131fd13c862SJeremy Soller // Set a System76 ACPI device value by name 132fd13c862SJeremy Soller static int system76_set(struct system76_data *data, char *method, int value) 133fd13c862SJeremy Soller { 134fd13c862SJeremy Soller union acpi_object obj; 135fd13c862SJeremy Soller struct acpi_object_list obj_list; 136fd13c862SJeremy Soller acpi_handle handle; 137fd13c862SJeremy Soller acpi_status status; 138fd13c862SJeremy Soller 139fd13c862SJeremy Soller obj.type = ACPI_TYPE_INTEGER; 140fd13c862SJeremy Soller obj.integer.value = value; 141fd13c862SJeremy Soller obj_list.count = 1; 142fd13c862SJeremy Soller obj_list.pointer = &obj; 143fd13c862SJeremy Soller handle = acpi_device_handle(data->acpi_dev); 144fd13c862SJeremy Soller status = acpi_evaluate_object(handle, method, &obj_list, NULL); 145fd13c862SJeremy Soller if (ACPI_SUCCESS(status)) 146fd13c862SJeremy Soller return 0; 147fd13c862SJeremy Soller else 148fd13c862SJeremy Soller return -1; 149fd13c862SJeremy Soller } 150fd13c862SJeremy Soller 15176f7eba3STim Crawford #define BATTERY_THRESHOLD_INVALID 0xFF 15276f7eba3STim Crawford 15376f7eba3STim Crawford enum { 15476f7eba3STim Crawford THRESHOLD_START, 15576f7eba3STim Crawford THRESHOLD_END, 15676f7eba3STim Crawford }; 15776f7eba3STim Crawford 15876f7eba3STim Crawford static ssize_t battery_get_threshold(int which, char *buf) 15976f7eba3STim Crawford { 16076f7eba3STim Crawford struct acpi_object_list input; 16176f7eba3STim Crawford union acpi_object param; 16276f7eba3STim Crawford acpi_handle handle; 16376f7eba3STim Crawford acpi_status status; 16476f7eba3STim Crawford unsigned long long ret = BATTERY_THRESHOLD_INVALID; 16576f7eba3STim Crawford 16676f7eba3STim Crawford handle = ec_get_handle(); 16776f7eba3STim Crawford if (!handle) 16876f7eba3STim Crawford return -ENODEV; 16976f7eba3STim Crawford 17076f7eba3STim Crawford input.count = 1; 17176f7eba3STim Crawford input.pointer = ¶m; 17276f7eba3STim Crawford // Start/stop selection 17376f7eba3STim Crawford param.type = ACPI_TYPE_INTEGER; 17476f7eba3STim Crawford param.integer.value = which; 17576f7eba3STim Crawford 17676f7eba3STim Crawford status = acpi_evaluate_integer(handle, "GBCT", &input, &ret); 17776f7eba3STim Crawford if (ACPI_FAILURE(status)) 17876f7eba3STim Crawford return -EIO; 17976f7eba3STim Crawford if (ret == BATTERY_THRESHOLD_INVALID) 18076f7eba3STim Crawford return -EINVAL; 18176f7eba3STim Crawford 18276f7eba3STim Crawford return sysfs_emit(buf, "%d\n", (int)ret); 18376f7eba3STim Crawford } 18476f7eba3STim Crawford 18576f7eba3STim Crawford static ssize_t battery_set_threshold(int which, const char *buf, size_t count) 18676f7eba3STim Crawford { 18776f7eba3STim Crawford struct acpi_object_list input; 18876f7eba3STim Crawford union acpi_object params[2]; 18976f7eba3STim Crawford acpi_handle handle; 19076f7eba3STim Crawford acpi_status status; 19176f7eba3STim Crawford unsigned int value; 19276f7eba3STim Crawford int ret; 19376f7eba3STim Crawford 19476f7eba3STim Crawford handle = ec_get_handle(); 19576f7eba3STim Crawford if (!handle) 19676f7eba3STim Crawford return -ENODEV; 19776f7eba3STim Crawford 19876f7eba3STim Crawford ret = kstrtouint(buf, 10, &value); 19976f7eba3STim Crawford if (ret) 20076f7eba3STim Crawford return ret; 20176f7eba3STim Crawford 20276f7eba3STim Crawford if (value > 100) 20376f7eba3STim Crawford return -EINVAL; 20476f7eba3STim Crawford 20576f7eba3STim Crawford input.count = 2; 20676f7eba3STim Crawford input.pointer = params; 20776f7eba3STim Crawford // Start/stop selection 20876f7eba3STim Crawford params[0].type = ACPI_TYPE_INTEGER; 20976f7eba3STim Crawford params[0].integer.value = which; 21076f7eba3STim Crawford // Threshold value 21176f7eba3STim Crawford params[1].type = ACPI_TYPE_INTEGER; 21276f7eba3STim Crawford params[1].integer.value = value; 21376f7eba3STim Crawford 21476f7eba3STim Crawford status = acpi_evaluate_object(handle, "SBCT", &input, NULL); 21576f7eba3STim Crawford if (ACPI_FAILURE(status)) 21676f7eba3STim Crawford return -EIO; 21776f7eba3STim Crawford 21876f7eba3STim Crawford return count; 21976f7eba3STim Crawford } 22076f7eba3STim Crawford 22176f7eba3STim Crawford static ssize_t charge_control_start_threshold_show(struct device *dev, 22276f7eba3STim Crawford struct device_attribute *attr, char *buf) 22376f7eba3STim Crawford { 22476f7eba3STim Crawford return battery_get_threshold(THRESHOLD_START, buf); 22576f7eba3STim Crawford } 22676f7eba3STim Crawford 22776f7eba3STim Crawford static ssize_t charge_control_start_threshold_store(struct device *dev, 22876f7eba3STim Crawford struct device_attribute *attr, const char *buf, size_t count) 22976f7eba3STim Crawford { 23076f7eba3STim Crawford return battery_set_threshold(THRESHOLD_START, buf, count); 23176f7eba3STim Crawford } 23276f7eba3STim Crawford 23376f7eba3STim Crawford static DEVICE_ATTR_RW(charge_control_start_threshold); 23476f7eba3STim Crawford 23576f7eba3STim Crawford static ssize_t charge_control_end_threshold_show(struct device *dev, 23676f7eba3STim Crawford struct device_attribute *attr, char *buf) 23776f7eba3STim Crawford { 23876f7eba3STim Crawford return battery_get_threshold(THRESHOLD_END, buf); 23976f7eba3STim Crawford } 24076f7eba3STim Crawford 24176f7eba3STim Crawford static ssize_t charge_control_end_threshold_store(struct device *dev, 24276f7eba3STim Crawford struct device_attribute *attr, const char *buf, size_t count) 24376f7eba3STim Crawford { 24476f7eba3STim Crawford return battery_set_threshold(THRESHOLD_END, buf, count); 24576f7eba3STim Crawford } 24676f7eba3STim Crawford 24776f7eba3STim Crawford static DEVICE_ATTR_RW(charge_control_end_threshold); 24876f7eba3STim Crawford 24976f7eba3STim Crawford static struct attribute *system76_battery_attrs[] = { 25076f7eba3STim Crawford &dev_attr_charge_control_start_threshold.attr, 25176f7eba3STim Crawford &dev_attr_charge_control_end_threshold.attr, 25276f7eba3STim Crawford NULL, 25376f7eba3STim Crawford }; 25476f7eba3STim Crawford 25576f7eba3STim Crawford ATTRIBUTE_GROUPS(system76_battery); 25676f7eba3STim Crawford 25776f7eba3STim Crawford static int system76_battery_add(struct power_supply *battery) 25876f7eba3STim Crawford { 25976f7eba3STim Crawford // System76 EC only supports 1 battery 26076f7eba3STim Crawford if (strcmp(battery->desc->name, "BAT0") != 0) 26176f7eba3STim Crawford return -ENODEV; 26276f7eba3STim Crawford 26376f7eba3STim Crawford if (device_add_groups(&battery->dev, system76_battery_groups)) 26476f7eba3STim Crawford return -ENODEV; 26576f7eba3STim Crawford 26676f7eba3STim Crawford return 0; 26776f7eba3STim Crawford } 26876f7eba3STim Crawford 26976f7eba3STim Crawford static int system76_battery_remove(struct power_supply *battery) 27076f7eba3STim Crawford { 27176f7eba3STim Crawford device_remove_groups(&battery->dev, system76_battery_groups); 27276f7eba3STim Crawford return 0; 27376f7eba3STim Crawford } 27476f7eba3STim Crawford 27576f7eba3STim Crawford static struct acpi_battery_hook system76_battery_hook = { 27676f7eba3STim Crawford .add_battery = system76_battery_add, 27776f7eba3STim Crawford .remove_battery = system76_battery_remove, 27876f7eba3STim Crawford .name = "System76 Battery Extension", 27976f7eba3STim Crawford }; 28076f7eba3STim Crawford 28176f7eba3STim Crawford static void system76_battery_init(void) 28276f7eba3STim Crawford { 28376f7eba3STim Crawford battery_hook_register(&system76_battery_hook); 28476f7eba3STim Crawford } 28576f7eba3STim Crawford 28676f7eba3STim Crawford static void system76_battery_exit(void) 28776f7eba3STim Crawford { 28876f7eba3STim Crawford battery_hook_unregister(&system76_battery_hook); 28976f7eba3STim Crawford } 29076f7eba3STim Crawford 291fd13c862SJeremy Soller // Get the airplane mode LED brightness 292fd13c862SJeremy Soller static enum led_brightness ap_led_get(struct led_classdev *led) 293fd13c862SJeremy Soller { 294fd13c862SJeremy Soller struct system76_data *data; 295fd13c862SJeremy Soller int value; 296fd13c862SJeremy Soller 297fd13c862SJeremy Soller data = container_of(led, struct system76_data, ap_led); 298fd13c862SJeremy Soller value = system76_get(data, "GAPL"); 299fd13c862SJeremy Soller if (value > 0) 300fd13c862SJeremy Soller return (enum led_brightness)value; 301fd13c862SJeremy Soller else 302fd13c862SJeremy Soller return LED_OFF; 303fd13c862SJeremy Soller } 304fd13c862SJeremy Soller 305fd13c862SJeremy Soller // Set the airplane mode LED brightness 3065b36398dSNick Shipp static int ap_led_set(struct led_classdev *led, enum led_brightness value) 307fd13c862SJeremy Soller { 308fd13c862SJeremy Soller struct system76_data *data; 309fd13c862SJeremy Soller 310fd13c862SJeremy Soller data = container_of(led, struct system76_data, ap_led); 3115b36398dSNick Shipp return system76_set(data, "SAPL", value == LED_OFF ? 0 : 1); 312fd13c862SJeremy Soller } 313fd13c862SJeremy Soller 314fd13c862SJeremy Soller // Get the last set keyboard LED brightness 315fd13c862SJeremy Soller static enum led_brightness kb_led_get(struct led_classdev *led) 316fd13c862SJeremy Soller { 317fd13c862SJeremy Soller struct system76_data *data; 318fd13c862SJeremy Soller 319fd13c862SJeremy Soller data = container_of(led, struct system76_data, kb_led); 320fd13c862SJeremy Soller return data->kb_brightness; 321fd13c862SJeremy Soller } 322fd13c862SJeremy Soller 323fd13c862SJeremy Soller // Set the keyboard LED brightness 3245b36398dSNick Shipp static int kb_led_set(struct led_classdev *led, enum led_brightness value) 325fd13c862SJeremy Soller { 326fd13c862SJeremy Soller struct system76_data *data; 327fd13c862SJeremy Soller 328fd13c862SJeremy Soller data = container_of(led, struct system76_data, kb_led); 329fd13c862SJeremy Soller data->kb_brightness = value; 3305b36398dSNick Shipp return system76_set(data, "SKBL", (int)data->kb_brightness); 331fd13c862SJeremy Soller } 332fd13c862SJeremy Soller 333fd13c862SJeremy Soller // Get the last set keyboard LED color 334fd13c862SJeremy Soller static ssize_t kb_led_color_show( 335fd13c862SJeremy Soller struct device *dev, 336fd13c862SJeremy Soller struct device_attribute *dev_attr, 337fd13c862SJeremy Soller char *buf) 338fd13c862SJeremy Soller { 339fd13c862SJeremy Soller struct led_classdev *led; 340fd13c862SJeremy Soller struct system76_data *data; 341fd13c862SJeremy Soller 342*50d88b1dSHaowen Bai led = dev_get_drvdata(dev); 343fd13c862SJeremy Soller data = container_of(led, struct system76_data, kb_led); 344603a7dd0STim Crawford return sysfs_emit(buf, "%06X\n", data->kb_color); 345fd13c862SJeremy Soller } 346fd13c862SJeremy Soller 347fd13c862SJeremy Soller // Set the keyboard LED color 348fd13c862SJeremy Soller static ssize_t kb_led_color_store( 349fd13c862SJeremy Soller struct device *dev, 350fd13c862SJeremy Soller struct device_attribute *dev_attr, 351fd13c862SJeremy Soller const char *buf, 352fd13c862SJeremy Soller size_t size) 353fd13c862SJeremy Soller { 354fd13c862SJeremy Soller struct led_classdev *led; 355fd13c862SJeremy Soller struct system76_data *data; 356fd13c862SJeremy Soller unsigned int val; 357fd13c862SJeremy Soller int ret; 358fd13c862SJeremy Soller 359*50d88b1dSHaowen Bai led = dev_get_drvdata(dev); 360fd13c862SJeremy Soller data = container_of(led, struct system76_data, kb_led); 361fd13c862SJeremy Soller ret = kstrtouint(buf, 16, &val); 362fd13c862SJeremy Soller if (ret) 363fd13c862SJeremy Soller return ret; 364fd13c862SJeremy Soller if (val > 0xFFFFFF) 365fd13c862SJeremy Soller return -EINVAL; 366fd13c862SJeremy Soller data->kb_color = (int)val; 367fd13c862SJeremy Soller system76_set(data, "SKBC", data->kb_color); 368fd13c862SJeremy Soller 369fd13c862SJeremy Soller return size; 370fd13c862SJeremy Soller } 371fd13c862SJeremy Soller 372603a7dd0STim Crawford static struct device_attribute dev_attr_kb_led_color = { 373fd13c862SJeremy Soller .attr = { 374fd13c862SJeremy Soller .name = "color", 375fd13c862SJeremy Soller .mode = 0644, 376fd13c862SJeremy Soller }, 377fd13c862SJeremy Soller .show = kb_led_color_show, 378fd13c862SJeremy Soller .store = kb_led_color_store, 379fd13c862SJeremy Soller }; 380fd13c862SJeremy Soller 381603a7dd0STim Crawford static struct attribute *system76_kb_led_color_attrs[] = { 382603a7dd0STim Crawford &dev_attr_kb_led_color.attr, 383603a7dd0STim Crawford NULL, 384603a7dd0STim Crawford }; 385603a7dd0STim Crawford 386603a7dd0STim Crawford ATTRIBUTE_GROUPS(system76_kb_led_color); 387603a7dd0STim Crawford 388fd13c862SJeremy Soller // Notify that the keyboard LED was changed by hardware 389fd13c862SJeremy Soller static void kb_led_notify(struct system76_data *data) 390fd13c862SJeremy Soller { 391fd13c862SJeremy Soller led_classdev_notify_brightness_hw_changed( 392fd13c862SJeremy Soller &data->kb_led, 393fd13c862SJeremy Soller data->kb_brightness 394fd13c862SJeremy Soller ); 395fd13c862SJeremy Soller } 396fd13c862SJeremy Soller 397fd13c862SJeremy Soller // Read keyboard LED brightness as set by hardware 398fd13c862SJeremy Soller static void kb_led_hotkey_hardware(struct system76_data *data) 399fd13c862SJeremy Soller { 400fd13c862SJeremy Soller int value; 401fd13c862SJeremy Soller 402fd13c862SJeremy Soller value = system76_get(data, "GKBL"); 403fd13c862SJeremy Soller if (value < 0) 404fd13c862SJeremy Soller return; 405fd13c862SJeremy Soller data->kb_brightness = value; 406fd13c862SJeremy Soller kb_led_notify(data); 407fd13c862SJeremy Soller } 408fd13c862SJeremy Soller 409fd13c862SJeremy Soller // Toggle the keyboard LED 410fd13c862SJeremy Soller static void kb_led_hotkey_toggle(struct system76_data *data) 411fd13c862SJeremy Soller { 412fd13c862SJeremy Soller if (data->kb_brightness > 0) { 413fd13c862SJeremy Soller data->kb_toggle_brightness = data->kb_brightness; 414fd13c862SJeremy Soller kb_led_set(&data->kb_led, 0); 415fd13c862SJeremy Soller } else { 416fd13c862SJeremy Soller kb_led_set(&data->kb_led, data->kb_toggle_brightness); 417fd13c862SJeremy Soller } 418fd13c862SJeremy Soller kb_led_notify(data); 419fd13c862SJeremy Soller } 420fd13c862SJeremy Soller 421fd13c862SJeremy Soller // Decrease the keyboard LED brightness 422fd13c862SJeremy Soller static void kb_led_hotkey_down(struct system76_data *data) 423fd13c862SJeremy Soller { 424fd13c862SJeremy Soller int i; 425fd13c862SJeremy Soller 426fd13c862SJeremy Soller if (data->kb_brightness > 0) { 427fd13c862SJeremy Soller for (i = ARRAY_SIZE(kb_levels); i > 0; i--) { 428fd13c862SJeremy Soller if (kb_levels[i - 1] < data->kb_brightness) { 429fd13c862SJeremy Soller kb_led_set(&data->kb_led, kb_levels[i - 1]); 430fd13c862SJeremy Soller break; 431fd13c862SJeremy Soller } 432fd13c862SJeremy Soller } 433fd13c862SJeremy Soller } else { 434fd13c862SJeremy Soller kb_led_set(&data->kb_led, data->kb_toggle_brightness); 435fd13c862SJeremy Soller } 436fd13c862SJeremy Soller kb_led_notify(data); 437fd13c862SJeremy Soller } 438fd13c862SJeremy Soller 439fd13c862SJeremy Soller // Increase the keyboard LED brightness 440fd13c862SJeremy Soller static void kb_led_hotkey_up(struct system76_data *data) 441fd13c862SJeremy Soller { 442fd13c862SJeremy Soller int i; 443fd13c862SJeremy Soller 444fd13c862SJeremy Soller if (data->kb_brightness > 0) { 445fd13c862SJeremy Soller for (i = 0; i < ARRAY_SIZE(kb_levels); i++) { 446fd13c862SJeremy Soller if (kb_levels[i] > data->kb_brightness) { 447fd13c862SJeremy Soller kb_led_set(&data->kb_led, kb_levels[i]); 448fd13c862SJeremy Soller break; 449fd13c862SJeremy Soller } 450fd13c862SJeremy Soller } 451fd13c862SJeremy Soller } else { 452fd13c862SJeremy Soller kb_led_set(&data->kb_led, data->kb_toggle_brightness); 453fd13c862SJeremy Soller } 454fd13c862SJeremy Soller kb_led_notify(data); 455fd13c862SJeremy Soller } 456fd13c862SJeremy Soller 457fd13c862SJeremy Soller // Cycle the keyboard LED color 458fd13c862SJeremy Soller static void kb_led_hotkey_color(struct system76_data *data) 459fd13c862SJeremy Soller { 460fd13c862SJeremy Soller int i; 461fd13c862SJeremy Soller 462fd13c862SJeremy Soller if (data->kb_color < 0) 463fd13c862SJeremy Soller return; 464fd13c862SJeremy Soller if (data->kb_brightness > 0) { 465fd13c862SJeremy Soller for (i = 0; i < ARRAY_SIZE(kb_colors); i++) { 466fd13c862SJeremy Soller if (kb_colors[i] == data->kb_color) 467fd13c862SJeremy Soller break; 468fd13c862SJeremy Soller } 469fd13c862SJeremy Soller i += 1; 470fd13c862SJeremy Soller if (i >= ARRAY_SIZE(kb_colors)) 471fd13c862SJeremy Soller i = 0; 472fd13c862SJeremy Soller data->kb_color = kb_colors[i]; 473fd13c862SJeremy Soller system76_set(data, "SKBC", data->kb_color); 474fd13c862SJeremy Soller } else { 475fd13c862SJeremy Soller kb_led_set(&data->kb_led, data->kb_toggle_brightness); 476fd13c862SJeremy Soller } 477fd13c862SJeremy Soller kb_led_notify(data); 478fd13c862SJeremy Soller } 479fd13c862SJeremy Soller 48095563d45SJeremy Soller static umode_t thermal_is_visible(const void *drvdata, enum hwmon_sensor_types type, 48195563d45SJeremy Soller u32 attr, int channel) 48295563d45SJeremy Soller { 48395563d45SJeremy Soller const struct system76_data *data = drvdata; 48495563d45SJeremy Soller 48595563d45SJeremy Soller switch (type) { 48695563d45SJeremy Soller case hwmon_fan: 48795563d45SJeremy Soller case hwmon_pwm: 48895563d45SJeremy Soller if (system76_name(data->nfan, channel)) 48995563d45SJeremy Soller return 0444; 49095563d45SJeremy Soller break; 49195563d45SJeremy Soller 49295563d45SJeremy Soller case hwmon_temp: 49395563d45SJeremy Soller if (system76_name(data->ntmp, channel)) 49495563d45SJeremy Soller return 0444; 49595563d45SJeremy Soller break; 49695563d45SJeremy Soller 49795563d45SJeremy Soller default: 49895563d45SJeremy Soller return 0; 49995563d45SJeremy Soller } 50095563d45SJeremy Soller 50195563d45SJeremy Soller return 0; 50295563d45SJeremy Soller } 50395563d45SJeremy Soller 50495563d45SJeremy Soller static int thermal_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, 50595563d45SJeremy Soller int channel, long *val) 50695563d45SJeremy Soller { 50795563d45SJeremy Soller struct system76_data *data = dev_get_drvdata(dev); 50895563d45SJeremy Soller int raw; 50995563d45SJeremy Soller 51095563d45SJeremy Soller switch (type) { 51195563d45SJeremy Soller case hwmon_fan: 51295563d45SJeremy Soller if (attr == hwmon_fan_input) { 51395563d45SJeremy Soller raw = system76_get_index(data, "GFAN", channel); 51495563d45SJeremy Soller if (raw < 0) 51595563d45SJeremy Soller return raw; 51695563d45SJeremy Soller *val = (raw >> 8) & 0xFFFF; 51795563d45SJeremy Soller return 0; 51895563d45SJeremy Soller } 51995563d45SJeremy Soller break; 52095563d45SJeremy Soller 52195563d45SJeremy Soller case hwmon_pwm: 52295563d45SJeremy Soller if (attr == hwmon_pwm_input) { 52395563d45SJeremy Soller raw = system76_get_index(data, "GFAN", channel); 52495563d45SJeremy Soller if (raw < 0) 52595563d45SJeremy Soller return raw; 52695563d45SJeremy Soller *val = raw & 0xFF; 52795563d45SJeremy Soller return 0; 52895563d45SJeremy Soller } 52995563d45SJeremy Soller break; 53095563d45SJeremy Soller 53195563d45SJeremy Soller case hwmon_temp: 53295563d45SJeremy Soller if (attr == hwmon_temp_input) { 53395563d45SJeremy Soller raw = system76_get_index(data, "GTMP", channel); 53495563d45SJeremy Soller if (raw < 0) 53595563d45SJeremy Soller return raw; 53695563d45SJeremy Soller *val = raw * 1000; 53795563d45SJeremy Soller return 0; 53895563d45SJeremy Soller } 53995563d45SJeremy Soller break; 54095563d45SJeremy Soller 54195563d45SJeremy Soller default: 54295563d45SJeremy Soller return -EOPNOTSUPP; 54395563d45SJeremy Soller } 54495563d45SJeremy Soller 54595563d45SJeremy Soller return -EOPNOTSUPP; 54695563d45SJeremy Soller } 54795563d45SJeremy Soller 54895563d45SJeremy Soller static int thermal_read_string(struct device *dev, enum hwmon_sensor_types type, u32 attr, 54995563d45SJeremy Soller int channel, const char **str) 55095563d45SJeremy Soller { 55195563d45SJeremy Soller struct system76_data *data = dev_get_drvdata(dev); 55295563d45SJeremy Soller 55395563d45SJeremy Soller switch (type) { 55495563d45SJeremy Soller case hwmon_fan: 55595563d45SJeremy Soller if (attr == hwmon_fan_label) { 55695563d45SJeremy Soller *str = system76_name(data->nfan, channel); 55795563d45SJeremy Soller if (*str) 55895563d45SJeremy Soller return 0; 55995563d45SJeremy Soller } 56095563d45SJeremy Soller break; 56195563d45SJeremy Soller 56295563d45SJeremy Soller case hwmon_temp: 56395563d45SJeremy Soller if (attr == hwmon_temp_label) { 56495563d45SJeremy Soller *str = system76_name(data->ntmp, channel); 56595563d45SJeremy Soller if (*str) 56695563d45SJeremy Soller return 0; 56795563d45SJeremy Soller } 56895563d45SJeremy Soller break; 56995563d45SJeremy Soller 57095563d45SJeremy Soller default: 57195563d45SJeremy Soller return -EOPNOTSUPP; 57295563d45SJeremy Soller } 57395563d45SJeremy Soller 57495563d45SJeremy Soller return -EOPNOTSUPP; 57595563d45SJeremy Soller } 57695563d45SJeremy Soller 57795563d45SJeremy Soller static const struct hwmon_ops thermal_ops = { 57895563d45SJeremy Soller .is_visible = thermal_is_visible, 57995563d45SJeremy Soller .read = thermal_read, 58095563d45SJeremy Soller .read_string = thermal_read_string, 58195563d45SJeremy Soller }; 58295563d45SJeremy Soller 58395563d45SJeremy Soller // Allocate up to 8 fans and temperatures 58495563d45SJeremy Soller static const struct hwmon_channel_info *thermal_channel_info[] = { 58595563d45SJeremy Soller HWMON_CHANNEL_INFO(fan, 58695563d45SJeremy Soller HWMON_F_INPUT | HWMON_F_LABEL, 58795563d45SJeremy Soller HWMON_F_INPUT | HWMON_F_LABEL, 58895563d45SJeremy Soller HWMON_F_INPUT | HWMON_F_LABEL, 58995563d45SJeremy Soller HWMON_F_INPUT | HWMON_F_LABEL, 59095563d45SJeremy Soller HWMON_F_INPUT | HWMON_F_LABEL, 59195563d45SJeremy Soller HWMON_F_INPUT | HWMON_F_LABEL, 59295563d45SJeremy Soller HWMON_F_INPUT | HWMON_F_LABEL, 59395563d45SJeremy Soller HWMON_F_INPUT | HWMON_F_LABEL), 59495563d45SJeremy Soller HWMON_CHANNEL_INFO(pwm, 59595563d45SJeremy Soller HWMON_PWM_INPUT, 59695563d45SJeremy Soller HWMON_PWM_INPUT, 59795563d45SJeremy Soller HWMON_PWM_INPUT, 59895563d45SJeremy Soller HWMON_PWM_INPUT, 59995563d45SJeremy Soller HWMON_PWM_INPUT, 60095563d45SJeremy Soller HWMON_PWM_INPUT, 60195563d45SJeremy Soller HWMON_PWM_INPUT, 60295563d45SJeremy Soller HWMON_PWM_INPUT), 60395563d45SJeremy Soller HWMON_CHANNEL_INFO(temp, 60495563d45SJeremy Soller HWMON_T_INPUT | HWMON_T_LABEL, 60595563d45SJeremy Soller HWMON_T_INPUT | HWMON_T_LABEL, 60695563d45SJeremy Soller HWMON_T_INPUT | HWMON_T_LABEL, 60795563d45SJeremy Soller HWMON_T_INPUT | HWMON_T_LABEL, 60895563d45SJeremy Soller HWMON_T_INPUT | HWMON_T_LABEL, 60995563d45SJeremy Soller HWMON_T_INPUT | HWMON_T_LABEL, 61095563d45SJeremy Soller HWMON_T_INPUT | HWMON_T_LABEL, 61195563d45SJeremy Soller HWMON_T_INPUT | HWMON_T_LABEL), 61295563d45SJeremy Soller NULL 61395563d45SJeremy Soller }; 61495563d45SJeremy Soller 61595563d45SJeremy Soller static const struct hwmon_chip_info thermal_chip_info = { 61695563d45SJeremy Soller .ops = &thermal_ops, 61795563d45SJeremy Soller .info = thermal_channel_info, 61895563d45SJeremy Soller }; 61995563d45SJeremy Soller 6200de30fc6SJeremy Soller static void input_key(struct system76_data *data, unsigned int code) 6210de30fc6SJeremy Soller { 6220de30fc6SJeremy Soller input_report_key(data->input, code, 1); 6230de30fc6SJeremy Soller input_sync(data->input); 6240de30fc6SJeremy Soller 6250de30fc6SJeremy Soller input_report_key(data->input, code, 0); 6260de30fc6SJeremy Soller input_sync(data->input); 6270de30fc6SJeremy Soller } 6280de30fc6SJeremy Soller 629fd13c862SJeremy Soller // Handle ACPI notification 630fd13c862SJeremy Soller static void system76_notify(struct acpi_device *acpi_dev, u32 event) 631fd13c862SJeremy Soller { 632fd13c862SJeremy Soller struct system76_data *data; 633fd13c862SJeremy Soller 634fd13c862SJeremy Soller data = acpi_driver_data(acpi_dev); 635fd13c862SJeremy Soller switch (event) { 636fd13c862SJeremy Soller case 0x80: 637fd13c862SJeremy Soller kb_led_hotkey_hardware(data); 638fd13c862SJeremy Soller break; 639fd13c862SJeremy Soller case 0x81: 640fd13c862SJeremy Soller kb_led_hotkey_toggle(data); 641fd13c862SJeremy Soller break; 642fd13c862SJeremy Soller case 0x82: 643fd13c862SJeremy Soller kb_led_hotkey_down(data); 644fd13c862SJeremy Soller break; 645fd13c862SJeremy Soller case 0x83: 646fd13c862SJeremy Soller kb_led_hotkey_up(data); 647fd13c862SJeremy Soller break; 648fd13c862SJeremy Soller case 0x84: 649fd13c862SJeremy Soller kb_led_hotkey_color(data); 650fd13c862SJeremy Soller break; 6510de30fc6SJeremy Soller case 0x85: 6520de30fc6SJeremy Soller input_key(data, KEY_SCREENLOCK); 6530de30fc6SJeremy Soller break; 654fd13c862SJeremy Soller } 655fd13c862SJeremy Soller } 656fd13c862SJeremy Soller 657fd13c862SJeremy Soller // Add a System76 ACPI device 658fd13c862SJeremy Soller static int system76_add(struct acpi_device *acpi_dev) 659fd13c862SJeremy Soller { 660fd13c862SJeremy Soller struct system76_data *data; 661fd13c862SJeremy Soller int err; 662fd13c862SJeremy Soller 663fd13c862SJeremy Soller data = devm_kzalloc(&acpi_dev->dev, sizeof(*data), GFP_KERNEL); 664fd13c862SJeremy Soller if (!data) 665fd13c862SJeremy Soller return -ENOMEM; 666fd13c862SJeremy Soller acpi_dev->driver_data = data; 667fd13c862SJeremy Soller data->acpi_dev = acpi_dev; 668fd13c862SJeremy Soller 669c4499272STim Crawford // Some models do not run open EC firmware. Check for an ACPI method 670c4499272STim Crawford // that only exists on open EC to guard functionality specific to it. 671c4499272STim Crawford data->has_open_ec = acpi_has_method(acpi_device_handle(data->acpi_dev), "NFAN"); 672c4499272STim Crawford 673fd13c862SJeremy Soller err = system76_get(data, "INIT"); 674fd13c862SJeremy Soller if (err) 675fd13c862SJeremy Soller return err; 676fd13c862SJeremy Soller data->ap_led.name = "system76_acpi::airplane"; 677fd13c862SJeremy Soller data->ap_led.flags = LED_CORE_SUSPENDRESUME; 678fd13c862SJeremy Soller data->ap_led.brightness_get = ap_led_get; 6795b36398dSNick Shipp data->ap_led.brightness_set_blocking = ap_led_set; 680fd13c862SJeremy Soller data->ap_led.max_brightness = 1; 681fd13c862SJeremy Soller data->ap_led.default_trigger = "rfkill-none"; 682fd13c862SJeremy Soller err = devm_led_classdev_register(&acpi_dev->dev, &data->ap_led); 683fd13c862SJeremy Soller if (err) 684fd13c862SJeremy Soller return err; 685fd13c862SJeremy Soller 686fd13c862SJeremy Soller data->kb_led.name = "system76_acpi::kbd_backlight"; 687fd13c862SJeremy Soller data->kb_led.flags = LED_BRIGHT_HW_CHANGED | LED_CORE_SUSPENDRESUME; 688fd13c862SJeremy Soller data->kb_led.brightness_get = kb_led_get; 6895b36398dSNick Shipp data->kb_led.brightness_set_blocking = kb_led_set; 690fd13c862SJeremy Soller if (acpi_has_method(acpi_device_handle(data->acpi_dev), "SKBC")) { 691fd13c862SJeremy Soller data->kb_led.max_brightness = 255; 692603a7dd0STim Crawford data->kb_led.groups = system76_kb_led_color_groups; 693fd13c862SJeremy Soller data->kb_toggle_brightness = 72; 694fd13c862SJeremy Soller data->kb_color = 0xffffff; 695fd13c862SJeremy Soller system76_set(data, "SKBC", data->kb_color); 696fd13c862SJeremy Soller } else { 697fd13c862SJeremy Soller data->kb_led.max_brightness = 5; 698fd13c862SJeremy Soller data->kb_color = -1; 699fd13c862SJeremy Soller } 700fd13c862SJeremy Soller err = devm_led_classdev_register(&acpi_dev->dev, &data->kb_led); 701fd13c862SJeremy Soller if (err) 702fd13c862SJeremy Soller return err; 703fd13c862SJeremy Soller 7040de30fc6SJeremy Soller data->input = devm_input_allocate_device(&acpi_dev->dev); 7050de30fc6SJeremy Soller if (!data->input) 7060de30fc6SJeremy Soller return -ENOMEM; 7070de30fc6SJeremy Soller 7080de30fc6SJeremy Soller data->input->name = "System76 ACPI Hotkeys"; 7090de30fc6SJeremy Soller data->input->phys = "system76_acpi/input0"; 7100de30fc6SJeremy Soller data->input->id.bustype = BUS_HOST; 7110de30fc6SJeremy Soller data->input->dev.parent = &acpi_dev->dev; 7120de30fc6SJeremy Soller input_set_capability(data->input, EV_KEY, KEY_SCREENLOCK); 7130de30fc6SJeremy Soller 7140de30fc6SJeremy Soller err = input_register_device(data->input); 7150de30fc6SJeremy Soller if (err) 7160de30fc6SJeremy Soller goto error; 7170de30fc6SJeremy Soller 718c4499272STim Crawford if (data->has_open_ec) { 71995563d45SJeremy Soller err = system76_get_object(data, "NFAN", &data->nfan); 72095563d45SJeremy Soller if (err) 72195563d45SJeremy Soller goto error; 72295563d45SJeremy Soller 72395563d45SJeremy Soller err = system76_get_object(data, "NTMP", &data->ntmp); 72495563d45SJeremy Soller if (err) 72595563d45SJeremy Soller goto error; 72695563d45SJeremy Soller 72795563d45SJeremy Soller data->therm = devm_hwmon_device_register_with_info(&acpi_dev->dev, 72895563d45SJeremy Soller "system76_acpi", data, &thermal_chip_info, NULL); 72995563d45SJeremy Soller err = PTR_ERR_OR_ZERO(data->therm); 73095563d45SJeremy Soller if (err) 73195563d45SJeremy Soller goto error; 73295563d45SJeremy Soller 73376f7eba3STim Crawford system76_battery_init(); 734c4499272STim Crawford } 73576f7eba3STim Crawford 736fd13c862SJeremy Soller return 0; 73795563d45SJeremy Soller 73895563d45SJeremy Soller error: 739c4499272STim Crawford if (data->has_open_ec) { 74095563d45SJeremy Soller kfree(data->ntmp); 74195563d45SJeremy Soller kfree(data->nfan); 742c4499272STim Crawford } 74395563d45SJeremy Soller return err; 744fd13c862SJeremy Soller } 745fd13c862SJeremy Soller 746fd13c862SJeremy Soller // Remove a System76 ACPI device 747fd13c862SJeremy Soller static int system76_remove(struct acpi_device *acpi_dev) 748fd13c862SJeremy Soller { 749fd13c862SJeremy Soller struct system76_data *data; 750fd13c862SJeremy Soller 751fd13c862SJeremy Soller data = acpi_driver_data(acpi_dev); 75276f7eba3STim Crawford 753c4499272STim Crawford if (data->has_open_ec) { 75476f7eba3STim Crawford system76_battery_exit(); 755c4499272STim Crawford kfree(data->nfan); 756c4499272STim Crawford kfree(data->ntmp); 757c4499272STim Crawford } 75876f7eba3STim Crawford 759fd13c862SJeremy Soller devm_led_classdev_unregister(&acpi_dev->dev, &data->ap_led); 760fd13c862SJeremy Soller devm_led_classdev_unregister(&acpi_dev->dev, &data->kb_led); 761fd13c862SJeremy Soller 762fd13c862SJeremy Soller system76_get(data, "FINI"); 763fd13c862SJeremy Soller 764fd13c862SJeremy Soller return 0; 765fd13c862SJeremy Soller } 766fd13c862SJeremy Soller 767fd13c862SJeremy Soller static struct acpi_driver system76_driver = { 768fd13c862SJeremy Soller .name = "System76 ACPI Driver", 769fd13c862SJeremy Soller .class = "hotkey", 770fd13c862SJeremy Soller .ids = device_ids, 771fd13c862SJeremy Soller .ops = { 772fd13c862SJeremy Soller .add = system76_add, 773fd13c862SJeremy Soller .remove = system76_remove, 774fd13c862SJeremy Soller .notify = system76_notify, 775fd13c862SJeremy Soller }, 776fd13c862SJeremy Soller }; 777fd13c862SJeremy Soller module_acpi_driver(system76_driver); 778fd13c862SJeremy Soller 779fd13c862SJeremy Soller MODULE_DESCRIPTION("System76 ACPI Driver"); 780fd13c862SJeremy Soller MODULE_AUTHOR("Jeremy Soller <jeremy@system76.com>"); 781fd13c862SJeremy Soller MODULE_LICENSE("GPL"); 782