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> 21*76f7eba3STim Crawford #include <linux/power_supply.h> 22*76f7eba3STim Crawford #include <linux/sysfs.h> 23fd13c862SJeremy Soller #include <linux/types.h> 24fd13c862SJeremy Soller 25*76f7eba3STim Crawford #include <acpi/battery.h> 26*76f7eba3STim 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; 38fd13c862SJeremy Soller }; 39fd13c862SJeremy Soller 40fd13c862SJeremy Soller static const struct acpi_device_id device_ids[] = { 41fd13c862SJeremy Soller {"17761776", 0}, 42fd13c862SJeremy Soller {"", 0}, 43fd13c862SJeremy Soller }; 44fd13c862SJeremy Soller MODULE_DEVICE_TABLE(acpi, device_ids); 45fd13c862SJeremy Soller 46fd13c862SJeremy Soller // Array of keyboard LED brightness levels 47fd13c862SJeremy Soller static const enum led_brightness kb_levels[] = { 48fd13c862SJeremy Soller 48, 49fd13c862SJeremy Soller 72, 50fd13c862SJeremy Soller 96, 51fd13c862SJeremy Soller 144, 52fd13c862SJeremy Soller 192, 53fd13c862SJeremy Soller 255 54fd13c862SJeremy Soller }; 55fd13c862SJeremy Soller 56fd13c862SJeremy Soller // Array of keyboard LED colors in 24-bit RGB format 57fd13c862SJeremy Soller static const int kb_colors[] = { 58fd13c862SJeremy Soller 0xFFFFFF, 59fd13c862SJeremy Soller 0x0000FF, 60fd13c862SJeremy Soller 0xFF0000, 61fd13c862SJeremy Soller 0xFF00FF, 62fd13c862SJeremy Soller 0x00FF00, 63fd13c862SJeremy Soller 0x00FFFF, 64fd13c862SJeremy Soller 0xFFFF00 65fd13c862SJeremy Soller }; 66fd13c862SJeremy Soller 67fd13c862SJeremy Soller // Get a System76 ACPI device value by name 68fd13c862SJeremy Soller static int system76_get(struct system76_data *data, char *method) 69fd13c862SJeremy Soller { 70fd13c862SJeremy Soller acpi_handle handle; 71fd13c862SJeremy Soller acpi_status status; 72fd13c862SJeremy Soller unsigned long long ret = 0; 73fd13c862SJeremy Soller 74fd13c862SJeremy Soller handle = acpi_device_handle(data->acpi_dev); 75fd13c862SJeremy Soller status = acpi_evaluate_integer(handle, method, NULL, &ret); 76fd13c862SJeremy Soller if (ACPI_SUCCESS(status)) 7795563d45SJeremy Soller return ret; 7895563d45SJeremy Soller return -ENODEV; 7995563d45SJeremy Soller } 8095563d45SJeremy Soller 8195563d45SJeremy Soller // Get a System76 ACPI device value by name with index 8295563d45SJeremy Soller static int system76_get_index(struct system76_data *data, char *method, int index) 8395563d45SJeremy Soller { 8495563d45SJeremy Soller union acpi_object obj; 8595563d45SJeremy Soller struct acpi_object_list obj_list; 8695563d45SJeremy Soller acpi_handle handle; 8795563d45SJeremy Soller acpi_status status; 8895563d45SJeremy Soller unsigned long long ret = 0; 8995563d45SJeremy Soller 9095563d45SJeremy Soller obj.type = ACPI_TYPE_INTEGER; 9195563d45SJeremy Soller obj.integer.value = index; 9295563d45SJeremy Soller obj_list.count = 1; 9395563d45SJeremy Soller obj_list.pointer = &obj; 9495563d45SJeremy Soller 9595563d45SJeremy Soller handle = acpi_device_handle(data->acpi_dev); 9695563d45SJeremy Soller status = acpi_evaluate_integer(handle, method, &obj_list, &ret); 9795563d45SJeremy Soller if (ACPI_SUCCESS(status)) 9895563d45SJeremy Soller return ret; 9995563d45SJeremy Soller return -ENODEV; 10095563d45SJeremy Soller } 10195563d45SJeremy Soller 10295563d45SJeremy Soller // Get a System76 ACPI device object by name 10395563d45SJeremy Soller static int system76_get_object(struct system76_data *data, char *method, union acpi_object **obj) 10495563d45SJeremy Soller { 10595563d45SJeremy Soller acpi_handle handle; 10695563d45SJeremy Soller acpi_status status; 10795563d45SJeremy Soller struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL }; 10895563d45SJeremy Soller 10995563d45SJeremy Soller handle = acpi_device_handle(data->acpi_dev); 11095563d45SJeremy Soller status = acpi_evaluate_object(handle, method, NULL, &buf); 11195563d45SJeremy Soller if (ACPI_SUCCESS(status)) { 11295563d45SJeremy Soller *obj = buf.pointer; 11395563d45SJeremy Soller return 0; 11495563d45SJeremy Soller } 11595563d45SJeremy Soller 11695563d45SJeremy Soller return -ENODEV; 11795563d45SJeremy Soller } 11895563d45SJeremy Soller 11995563d45SJeremy Soller // Get a name from a System76 ACPI device object 12095563d45SJeremy Soller static char *system76_name(union acpi_object *obj, int index) 12195563d45SJeremy Soller { 12295563d45SJeremy Soller if (obj && obj->type == ACPI_TYPE_PACKAGE && index <= obj->package.count) { 12395563d45SJeremy Soller if (obj->package.elements[index].type == ACPI_TYPE_STRING) 12495563d45SJeremy Soller return obj->package.elements[index].string.pointer; 12595563d45SJeremy Soller } 12695563d45SJeremy Soller 12795563d45SJeremy Soller return NULL; 128fd13c862SJeremy Soller } 129fd13c862SJeremy Soller 130fd13c862SJeremy Soller // Set a System76 ACPI device value by name 131fd13c862SJeremy Soller static int system76_set(struct system76_data *data, char *method, int value) 132fd13c862SJeremy Soller { 133fd13c862SJeremy Soller union acpi_object obj; 134fd13c862SJeremy Soller struct acpi_object_list obj_list; 135fd13c862SJeremy Soller acpi_handle handle; 136fd13c862SJeremy Soller acpi_status status; 137fd13c862SJeremy Soller 138fd13c862SJeremy Soller obj.type = ACPI_TYPE_INTEGER; 139fd13c862SJeremy Soller obj.integer.value = value; 140fd13c862SJeremy Soller obj_list.count = 1; 141fd13c862SJeremy Soller obj_list.pointer = &obj; 142fd13c862SJeremy Soller handle = acpi_device_handle(data->acpi_dev); 143fd13c862SJeremy Soller status = acpi_evaluate_object(handle, method, &obj_list, NULL); 144fd13c862SJeremy Soller if (ACPI_SUCCESS(status)) 145fd13c862SJeremy Soller return 0; 146fd13c862SJeremy Soller else 147fd13c862SJeremy Soller return -1; 148fd13c862SJeremy Soller } 149fd13c862SJeremy Soller 150*76f7eba3STim Crawford #define BATTERY_THRESHOLD_INVALID 0xFF 151*76f7eba3STim Crawford 152*76f7eba3STim Crawford enum { 153*76f7eba3STim Crawford THRESHOLD_START, 154*76f7eba3STim Crawford THRESHOLD_END, 155*76f7eba3STim Crawford }; 156*76f7eba3STim Crawford 157*76f7eba3STim Crawford static ssize_t battery_get_threshold(int which, char *buf) 158*76f7eba3STim Crawford { 159*76f7eba3STim Crawford struct acpi_object_list input; 160*76f7eba3STim Crawford union acpi_object param; 161*76f7eba3STim Crawford acpi_handle handle; 162*76f7eba3STim Crawford acpi_status status; 163*76f7eba3STim Crawford unsigned long long ret = BATTERY_THRESHOLD_INVALID; 164*76f7eba3STim Crawford 165*76f7eba3STim Crawford handle = ec_get_handle(); 166*76f7eba3STim Crawford if (!handle) 167*76f7eba3STim Crawford return -ENODEV; 168*76f7eba3STim Crawford 169*76f7eba3STim Crawford input.count = 1; 170*76f7eba3STim Crawford input.pointer = ¶m; 171*76f7eba3STim Crawford // Start/stop selection 172*76f7eba3STim Crawford param.type = ACPI_TYPE_INTEGER; 173*76f7eba3STim Crawford param.integer.value = which; 174*76f7eba3STim Crawford 175*76f7eba3STim Crawford status = acpi_evaluate_integer(handle, "GBCT", &input, &ret); 176*76f7eba3STim Crawford if (ACPI_FAILURE(status)) 177*76f7eba3STim Crawford return -EIO; 178*76f7eba3STim Crawford if (ret == BATTERY_THRESHOLD_INVALID) 179*76f7eba3STim Crawford return -EINVAL; 180*76f7eba3STim Crawford 181*76f7eba3STim Crawford return sysfs_emit(buf, "%d\n", (int)ret); 182*76f7eba3STim Crawford } 183*76f7eba3STim Crawford 184*76f7eba3STim Crawford static ssize_t battery_set_threshold(int which, const char *buf, size_t count) 185*76f7eba3STim Crawford { 186*76f7eba3STim Crawford struct acpi_object_list input; 187*76f7eba3STim Crawford union acpi_object params[2]; 188*76f7eba3STim Crawford acpi_handle handle; 189*76f7eba3STim Crawford acpi_status status; 190*76f7eba3STim Crawford unsigned int value; 191*76f7eba3STim Crawford int ret; 192*76f7eba3STim Crawford 193*76f7eba3STim Crawford handle = ec_get_handle(); 194*76f7eba3STim Crawford if (!handle) 195*76f7eba3STim Crawford return -ENODEV; 196*76f7eba3STim Crawford 197*76f7eba3STim Crawford ret = kstrtouint(buf, 10, &value); 198*76f7eba3STim Crawford if (ret) 199*76f7eba3STim Crawford return ret; 200*76f7eba3STim Crawford 201*76f7eba3STim Crawford if (value > 100) 202*76f7eba3STim Crawford return -EINVAL; 203*76f7eba3STim Crawford 204*76f7eba3STim Crawford input.count = 2; 205*76f7eba3STim Crawford input.pointer = params; 206*76f7eba3STim Crawford // Start/stop selection 207*76f7eba3STim Crawford params[0].type = ACPI_TYPE_INTEGER; 208*76f7eba3STim Crawford params[0].integer.value = which; 209*76f7eba3STim Crawford // Threshold value 210*76f7eba3STim Crawford params[1].type = ACPI_TYPE_INTEGER; 211*76f7eba3STim Crawford params[1].integer.value = value; 212*76f7eba3STim Crawford 213*76f7eba3STim Crawford status = acpi_evaluate_object(handle, "SBCT", &input, NULL); 214*76f7eba3STim Crawford if (ACPI_FAILURE(status)) 215*76f7eba3STim Crawford return -EIO; 216*76f7eba3STim Crawford 217*76f7eba3STim Crawford return count; 218*76f7eba3STim Crawford } 219*76f7eba3STim Crawford 220*76f7eba3STim Crawford static ssize_t charge_control_start_threshold_show(struct device *dev, 221*76f7eba3STim Crawford struct device_attribute *attr, char *buf) 222*76f7eba3STim Crawford { 223*76f7eba3STim Crawford return battery_get_threshold(THRESHOLD_START, buf); 224*76f7eba3STim Crawford } 225*76f7eba3STim Crawford 226*76f7eba3STim Crawford static ssize_t charge_control_start_threshold_store(struct device *dev, 227*76f7eba3STim Crawford struct device_attribute *attr, const char *buf, size_t count) 228*76f7eba3STim Crawford { 229*76f7eba3STim Crawford return battery_set_threshold(THRESHOLD_START, buf, count); 230*76f7eba3STim Crawford } 231*76f7eba3STim Crawford 232*76f7eba3STim Crawford static DEVICE_ATTR_RW(charge_control_start_threshold); 233*76f7eba3STim Crawford 234*76f7eba3STim Crawford static ssize_t charge_control_end_threshold_show(struct device *dev, 235*76f7eba3STim Crawford struct device_attribute *attr, char *buf) 236*76f7eba3STim Crawford { 237*76f7eba3STim Crawford return battery_get_threshold(THRESHOLD_END, buf); 238*76f7eba3STim Crawford } 239*76f7eba3STim Crawford 240*76f7eba3STim Crawford static ssize_t charge_control_end_threshold_store(struct device *dev, 241*76f7eba3STim Crawford struct device_attribute *attr, const char *buf, size_t count) 242*76f7eba3STim Crawford { 243*76f7eba3STim Crawford return battery_set_threshold(THRESHOLD_END, buf, count); 244*76f7eba3STim Crawford } 245*76f7eba3STim Crawford 246*76f7eba3STim Crawford static DEVICE_ATTR_RW(charge_control_end_threshold); 247*76f7eba3STim Crawford 248*76f7eba3STim Crawford static struct attribute *system76_battery_attrs[] = { 249*76f7eba3STim Crawford &dev_attr_charge_control_start_threshold.attr, 250*76f7eba3STim Crawford &dev_attr_charge_control_end_threshold.attr, 251*76f7eba3STim Crawford NULL, 252*76f7eba3STim Crawford }; 253*76f7eba3STim Crawford 254*76f7eba3STim Crawford ATTRIBUTE_GROUPS(system76_battery); 255*76f7eba3STim Crawford 256*76f7eba3STim Crawford static int system76_battery_add(struct power_supply *battery) 257*76f7eba3STim Crawford { 258*76f7eba3STim Crawford // System76 EC only supports 1 battery 259*76f7eba3STim Crawford if (strcmp(battery->desc->name, "BAT0") != 0) 260*76f7eba3STim Crawford return -ENODEV; 261*76f7eba3STim Crawford 262*76f7eba3STim Crawford if (device_add_groups(&battery->dev, system76_battery_groups)) 263*76f7eba3STim Crawford return -ENODEV; 264*76f7eba3STim Crawford 265*76f7eba3STim Crawford return 0; 266*76f7eba3STim Crawford } 267*76f7eba3STim Crawford 268*76f7eba3STim Crawford static int system76_battery_remove(struct power_supply *battery) 269*76f7eba3STim Crawford { 270*76f7eba3STim Crawford device_remove_groups(&battery->dev, system76_battery_groups); 271*76f7eba3STim Crawford return 0; 272*76f7eba3STim Crawford } 273*76f7eba3STim Crawford 274*76f7eba3STim Crawford static struct acpi_battery_hook system76_battery_hook = { 275*76f7eba3STim Crawford .add_battery = system76_battery_add, 276*76f7eba3STim Crawford .remove_battery = system76_battery_remove, 277*76f7eba3STim Crawford .name = "System76 Battery Extension", 278*76f7eba3STim Crawford }; 279*76f7eba3STim Crawford 280*76f7eba3STim Crawford static void system76_battery_init(void) 281*76f7eba3STim Crawford { 282*76f7eba3STim Crawford acpi_handle handle; 283*76f7eba3STim Crawford 284*76f7eba3STim Crawford handle = ec_get_handle(); 285*76f7eba3STim Crawford if (handle && acpi_has_method(handle, "GBCT")) 286*76f7eba3STim Crawford battery_hook_register(&system76_battery_hook); 287*76f7eba3STim Crawford } 288*76f7eba3STim Crawford 289*76f7eba3STim Crawford static void system76_battery_exit(void) 290*76f7eba3STim Crawford { 291*76f7eba3STim Crawford acpi_handle handle; 292*76f7eba3STim Crawford 293*76f7eba3STim Crawford handle = ec_get_handle(); 294*76f7eba3STim Crawford if (handle && acpi_has_method(handle, "GBCT")) 295*76f7eba3STim Crawford battery_hook_unregister(&system76_battery_hook); 296*76f7eba3STim Crawford } 297*76f7eba3STim Crawford 298fd13c862SJeremy Soller // Get the airplane mode LED brightness 299fd13c862SJeremy Soller static enum led_brightness ap_led_get(struct led_classdev *led) 300fd13c862SJeremy Soller { 301fd13c862SJeremy Soller struct system76_data *data; 302fd13c862SJeremy Soller int value; 303fd13c862SJeremy Soller 304fd13c862SJeremy Soller data = container_of(led, struct system76_data, ap_led); 305fd13c862SJeremy Soller value = system76_get(data, "GAPL"); 306fd13c862SJeremy Soller if (value > 0) 307fd13c862SJeremy Soller return (enum led_brightness)value; 308fd13c862SJeremy Soller else 309fd13c862SJeremy Soller return LED_OFF; 310fd13c862SJeremy Soller } 311fd13c862SJeremy Soller 312fd13c862SJeremy Soller // Set the airplane mode LED brightness 3135b36398dSNick Shipp static int ap_led_set(struct led_classdev *led, enum led_brightness value) 314fd13c862SJeremy Soller { 315fd13c862SJeremy Soller struct system76_data *data; 316fd13c862SJeremy Soller 317fd13c862SJeremy Soller data = container_of(led, struct system76_data, ap_led); 3185b36398dSNick Shipp return system76_set(data, "SAPL", value == LED_OFF ? 0 : 1); 319fd13c862SJeremy Soller } 320fd13c862SJeremy Soller 321fd13c862SJeremy Soller // Get the last set keyboard LED brightness 322fd13c862SJeremy Soller static enum led_brightness kb_led_get(struct led_classdev *led) 323fd13c862SJeremy Soller { 324fd13c862SJeremy Soller struct system76_data *data; 325fd13c862SJeremy Soller 326fd13c862SJeremy Soller data = container_of(led, struct system76_data, kb_led); 327fd13c862SJeremy Soller return data->kb_brightness; 328fd13c862SJeremy Soller } 329fd13c862SJeremy Soller 330fd13c862SJeremy Soller // Set the keyboard LED brightness 3315b36398dSNick Shipp static int kb_led_set(struct led_classdev *led, enum led_brightness value) 332fd13c862SJeremy Soller { 333fd13c862SJeremy Soller struct system76_data *data; 334fd13c862SJeremy Soller 335fd13c862SJeremy Soller data = container_of(led, struct system76_data, kb_led); 336fd13c862SJeremy Soller data->kb_brightness = value; 3375b36398dSNick Shipp return system76_set(data, "SKBL", (int)data->kb_brightness); 338fd13c862SJeremy Soller } 339fd13c862SJeremy Soller 340fd13c862SJeremy Soller // Get the last set keyboard LED color 341fd13c862SJeremy Soller static ssize_t kb_led_color_show( 342fd13c862SJeremy Soller struct device *dev, 343fd13c862SJeremy Soller struct device_attribute *dev_attr, 344fd13c862SJeremy Soller char *buf) 345fd13c862SJeremy Soller { 346fd13c862SJeremy Soller struct led_classdev *led; 347fd13c862SJeremy Soller struct system76_data *data; 348fd13c862SJeremy Soller 349fd13c862SJeremy Soller led = (struct led_classdev *)dev->driver_data; 350fd13c862SJeremy Soller data = container_of(led, struct system76_data, kb_led); 351fd13c862SJeremy Soller return sprintf(buf, "%06X\n", data->kb_color); 352fd13c862SJeremy Soller } 353fd13c862SJeremy Soller 354fd13c862SJeremy Soller // Set the keyboard LED color 355fd13c862SJeremy Soller static ssize_t kb_led_color_store( 356fd13c862SJeremy Soller struct device *dev, 357fd13c862SJeremy Soller struct device_attribute *dev_attr, 358fd13c862SJeremy Soller const char *buf, 359fd13c862SJeremy Soller size_t size) 360fd13c862SJeremy Soller { 361fd13c862SJeremy Soller struct led_classdev *led; 362fd13c862SJeremy Soller struct system76_data *data; 363fd13c862SJeremy Soller unsigned int val; 364fd13c862SJeremy Soller int ret; 365fd13c862SJeremy Soller 366fd13c862SJeremy Soller led = (struct led_classdev *)dev->driver_data; 367fd13c862SJeremy Soller data = container_of(led, struct system76_data, kb_led); 368fd13c862SJeremy Soller ret = kstrtouint(buf, 16, &val); 369fd13c862SJeremy Soller if (ret) 370fd13c862SJeremy Soller return ret; 371fd13c862SJeremy Soller if (val > 0xFFFFFF) 372fd13c862SJeremy Soller return -EINVAL; 373fd13c862SJeremy Soller data->kb_color = (int)val; 374fd13c862SJeremy Soller system76_set(data, "SKBC", data->kb_color); 375fd13c862SJeremy Soller 376fd13c862SJeremy Soller return size; 377fd13c862SJeremy Soller } 378fd13c862SJeremy Soller 379fd13c862SJeremy Soller static const struct device_attribute kb_led_color_dev_attr = { 380fd13c862SJeremy Soller .attr = { 381fd13c862SJeremy Soller .name = "color", 382fd13c862SJeremy Soller .mode = 0644, 383fd13c862SJeremy Soller }, 384fd13c862SJeremy Soller .show = kb_led_color_show, 385fd13c862SJeremy Soller .store = kb_led_color_store, 386fd13c862SJeremy Soller }; 387fd13c862SJeremy Soller 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 669fd13c862SJeremy Soller err = system76_get(data, "INIT"); 670fd13c862SJeremy Soller if (err) 671fd13c862SJeremy Soller return err; 672fd13c862SJeremy Soller data->ap_led.name = "system76_acpi::airplane"; 673fd13c862SJeremy Soller data->ap_led.flags = LED_CORE_SUSPENDRESUME; 674fd13c862SJeremy Soller data->ap_led.brightness_get = ap_led_get; 6755b36398dSNick Shipp data->ap_led.brightness_set_blocking = ap_led_set; 676fd13c862SJeremy Soller data->ap_led.max_brightness = 1; 677fd13c862SJeremy Soller data->ap_led.default_trigger = "rfkill-none"; 678fd13c862SJeremy Soller err = devm_led_classdev_register(&acpi_dev->dev, &data->ap_led); 679fd13c862SJeremy Soller if (err) 680fd13c862SJeremy Soller return err; 681fd13c862SJeremy Soller 682fd13c862SJeremy Soller data->kb_led.name = "system76_acpi::kbd_backlight"; 683fd13c862SJeremy Soller data->kb_led.flags = LED_BRIGHT_HW_CHANGED | LED_CORE_SUSPENDRESUME; 684fd13c862SJeremy Soller data->kb_led.brightness_get = kb_led_get; 6855b36398dSNick Shipp data->kb_led.brightness_set_blocking = kb_led_set; 686fd13c862SJeremy Soller if (acpi_has_method(acpi_device_handle(data->acpi_dev), "SKBC")) { 687fd13c862SJeremy Soller data->kb_led.max_brightness = 255; 688fd13c862SJeremy Soller data->kb_toggle_brightness = 72; 689fd13c862SJeremy Soller data->kb_color = 0xffffff; 690fd13c862SJeremy Soller system76_set(data, "SKBC", data->kb_color); 691fd13c862SJeremy Soller } else { 692fd13c862SJeremy Soller data->kb_led.max_brightness = 5; 693fd13c862SJeremy Soller data->kb_color = -1; 694fd13c862SJeremy Soller } 695fd13c862SJeremy Soller err = devm_led_classdev_register(&acpi_dev->dev, &data->kb_led); 696fd13c862SJeremy Soller if (err) 697fd13c862SJeremy Soller return err; 698fd13c862SJeremy Soller 699fd13c862SJeremy Soller if (data->kb_color >= 0) { 700fd13c862SJeremy Soller err = device_create_file( 701fd13c862SJeremy Soller data->kb_led.dev, 702fd13c862SJeremy Soller &kb_led_color_dev_attr 703fd13c862SJeremy Soller ); 704fd13c862SJeremy Soller if (err) 705fd13c862SJeremy Soller return err; 706fd13c862SJeremy Soller } 707fd13c862SJeremy Soller 7080de30fc6SJeremy Soller data->input = devm_input_allocate_device(&acpi_dev->dev); 7090de30fc6SJeremy Soller if (!data->input) 7100de30fc6SJeremy Soller return -ENOMEM; 7110de30fc6SJeremy Soller 7120de30fc6SJeremy Soller data->input->name = "System76 ACPI Hotkeys"; 7130de30fc6SJeremy Soller data->input->phys = "system76_acpi/input0"; 7140de30fc6SJeremy Soller data->input->id.bustype = BUS_HOST; 7150de30fc6SJeremy Soller data->input->dev.parent = &acpi_dev->dev; 7160de30fc6SJeremy Soller input_set_capability(data->input, EV_KEY, KEY_SCREENLOCK); 7170de30fc6SJeremy Soller 7180de30fc6SJeremy Soller err = input_register_device(data->input); 7190de30fc6SJeremy Soller if (err) 7200de30fc6SJeremy Soller goto error; 7210de30fc6SJeremy Soller 72295563d45SJeremy Soller err = system76_get_object(data, "NFAN", &data->nfan); 72395563d45SJeremy Soller if (err) 72495563d45SJeremy Soller goto error; 72595563d45SJeremy Soller 72695563d45SJeremy Soller err = system76_get_object(data, "NTMP", &data->ntmp); 72795563d45SJeremy Soller if (err) 72895563d45SJeremy Soller goto error; 72995563d45SJeremy Soller 73095563d45SJeremy Soller data->therm = devm_hwmon_device_register_with_info(&acpi_dev->dev, 73195563d45SJeremy Soller "system76_acpi", data, &thermal_chip_info, NULL); 73295563d45SJeremy Soller err = PTR_ERR_OR_ZERO(data->therm); 73395563d45SJeremy Soller if (err) 73495563d45SJeremy Soller goto error; 73595563d45SJeremy Soller 736*76f7eba3STim Crawford system76_battery_init(); 737*76f7eba3STim Crawford 738fd13c862SJeremy Soller return 0; 73995563d45SJeremy Soller 74095563d45SJeremy Soller error: 74195563d45SJeremy Soller kfree(data->ntmp); 74295563d45SJeremy Soller kfree(data->nfan); 7430de30fc6SJeremy Soller input_free_device(data->input); 74495563d45SJeremy Soller return err; 745fd13c862SJeremy Soller } 746fd13c862SJeremy Soller 747fd13c862SJeremy Soller // Remove a System76 ACPI device 748fd13c862SJeremy Soller static int system76_remove(struct acpi_device *acpi_dev) 749fd13c862SJeremy Soller { 750fd13c862SJeremy Soller struct system76_data *data; 751fd13c862SJeremy Soller 752fd13c862SJeremy Soller data = acpi_driver_data(acpi_dev); 753*76f7eba3STim Crawford 754*76f7eba3STim Crawford system76_battery_exit(); 755*76f7eba3STim Crawford 756fd13c862SJeremy Soller if (data->kb_color >= 0) 757fd13c862SJeremy Soller device_remove_file(data->kb_led.dev, &kb_led_color_dev_attr); 758fd13c862SJeremy Soller 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 76295563d45SJeremy Soller kfree(data->nfan); 76395563d45SJeremy Soller kfree(data->ntmp); 76495563d45SJeremy Soller 765fd13c862SJeremy Soller system76_get(data, "FINI"); 766fd13c862SJeremy Soller 767fd13c862SJeremy Soller return 0; 768fd13c862SJeremy Soller } 769fd13c862SJeremy Soller 770fd13c862SJeremy Soller static struct acpi_driver system76_driver = { 771fd13c862SJeremy Soller .name = "System76 ACPI Driver", 772fd13c862SJeremy Soller .class = "hotkey", 773fd13c862SJeremy Soller .ids = device_ids, 774fd13c862SJeremy Soller .ops = { 775fd13c862SJeremy Soller .add = system76_add, 776fd13c862SJeremy Soller .remove = system76_remove, 777fd13c862SJeremy Soller .notify = system76_notify, 778fd13c862SJeremy Soller }, 779fd13c862SJeremy Soller }; 780fd13c862SJeremy Soller module_acpi_driver(system76_driver); 781fd13c862SJeremy Soller 782fd13c862SJeremy Soller MODULE_DESCRIPTION("System76 ACPI Driver"); 783fd13c862SJeremy Soller MODULE_AUTHOR("Jeremy Soller <jeremy@system76.com>"); 784fd13c862SJeremy Soller MODULE_LICENSE("GPL"); 785