1 // SPDX-License-Identifier: GPL-2.0+
3  * lg-laptop.c - LG Gram ACPI features and hotkeys Driver
5  * Copyright (C) 2018 Matan Ziv-Av <[email protected]>
16 #include <linux/input/sparse-keymap.h>
33 MODULE_AUTHOR("Matan Ziv-Av");
57 #define WMI_EVENT_GUID0	"E4FB94F9-7F2B-4173-AD1A-CD1D95086248"
58 #define WMI_EVENT_GUID1	"023B133E-49D1-4E10-B313-698220140DC2"
59 #define WMI_EVENT_GUID2	"37BE1AC0-C3F2-4B1F-BFBE-8FDEAF2814D6"
60 #define WMI_EVENT_GUID3	"911BAD44-7DF8-4FBB-9319-BABA1C4B293B"
61 #define WMI_METHOD_WMAB "C3A72B38-D3EF-42D3-8CBB-D5A57049F66D"
62 #define WMI_METHOD_WMBB "2B4F501A-BD3C-4394-8DCF-00A7D2BC8210"
78 #define PLATFORM_NAME   "lg-laptop"
104 	{KE_KEY, 0x10000000, {KEY_F16} },/* Keyboard backlight (F8) - pressing
122 	args[0].integer.value = arg0;  in ggov()
127 		return -ENODEV;  in ggov()
135 		acpi_handle_err(handle, "GGOV: call failed.\n");  in ggov()
136 		return -EINVAL;  in ggov()
140 	if (r->type != ACPI_TYPE_INTEGER) {  in ggov()
142 		return -EINVAL;  in ggov()
145 	res = r->integer.value;  in ggov()
159 	args[0].integer.value = method;  in lg_wmab()
161 	args[1].integer.value = arg1;  in lg_wmab()
163 	args[2].integer.value = arg2;  in lg_wmab()
170 		dev_err(dev, "WMAB: call failed.\n");  in lg_wmab()
189 	args[0].integer.value = 0; /* ignored */  in lg_wmbb()
191 	args[1].integer.value = 1; /* Must be 1 or 2. Does not matter which */  in lg_wmbb()
201 		dev_err(dev, "WMBB: call failed.\n");  in lg_wmbb()
212 	pr_debug("event guid %li\n", data);  in wmi_notify()
216 	if (obj->type == ACPI_TYPE_INTEGER) {  in wmi_notify()
217 		int eventcode = obj->integer.value;  in wmi_notify()
222 				&kbd_backlight, get_kbd_backlight_level(kbd_backlight.dev->parent));  in wmi_notify()
226 			if (key && key->type == KE_KEY)  in wmi_notify()
232 	pr_debug("Type: %i    Eventcode: 0x%llx\n", obj->type,  in wmi_notify()
233 		 obj->integer.value);  in wmi_notify()
242 		wmi_input_dev->name = "LG WMI hotkeys";  in wmi_input_setup()
243 		wmi_input_dev->phys = "wmi/input0";  in wmi_input_setup()
244 		wmi_input_dev->id.bustype = BUS_HOST;  in wmi_input_setup()
270 	acpi_handle_debug(device->handle, "notify: %d\n", event);  in acpi_notify()
288 		return -EIO;  in fan_mode_store()
290 	if (r->type != ACPI_TYPE_INTEGER) {  in fan_mode_store()
292 		return -EIO;  in fan_mode_store()
295 	m = r->integer.value;  in fan_mode_store()
313 		return -EIO;  in fan_mode_show()
315 	if (r->type != ACPI_TYPE_INTEGER) {  in fan_mode_show()
317 		return -EIO;  in fan_mode_show()
320 	status = r->integer.value & 0x01;  in fan_mode_show()
323 	return sysfs_emit(buffer, "%d\n", status);  in fan_mode_show()
340 		return -EIO;  in usb_charge_store()
354 		return -EIO;  in usb_charge_show()
356 	if (r->type != ACPI_TYPE_BUFFER) {  in usb_charge_show()
358 		return -EIO;  in usb_charge_show()
361 	status = !!r->buffer.pointer[0x10];  in usb_charge_show()
365 	return sysfs_emit(buffer, "%d\n", status);  in usb_charge_show()
382 		return -EIO;  in reader_mode_store()
396 		return -EIO;  in reader_mode_show()
398 	if (r->type != ACPI_TYPE_INTEGER) {  in reader_mode_show()
400 		return -EIO;  in reader_mode_show()
403 	status = !!r->integer.value;  in reader_mode_show()
407 	return sysfs_emit(buffer, "%d\n", status);  in reader_mode_show()
424 		return -EIO;  in fn_lock_store()
438 		return -EIO;  in fn_lock_show()
440 	if (r->type != ACPI_TYPE_BUFFER) {  in fn_lock_show()
442 		return -EIO;  in fn_lock_show()
445 	status = !!r->buffer.pointer[0];  in fn_lock_show()
448 	return sysfs_emit(buffer, "%d\n", status);  in fn_lock_show()
466 			r = lg_wmbb(&pf_device->dev, WMBB_BATT_LIMIT, WM_SET, value);  in charge_control_end_threshold_store()
468 			r = lg_wmab(&pf_device->dev, WM_BATT_LIMIT, WM_SET, value);  in charge_control_end_threshold_store()
470 			return -EIO;  in charge_control_end_threshold_store()
476 	return -EINVAL;  in charge_control_end_threshold_store()
487 		r = lg_wmbb(&pf_device->dev, WMBB_BATT_LIMIT, WM_GET, 0);  in charge_control_end_threshold_show()
489 			return -EIO;  in charge_control_end_threshold_show()
491 		if (r->type != ACPI_TYPE_BUFFER) {  in charge_control_end_threshold_show()
493 			return -EIO;  in charge_control_end_threshold_show()
496 		status = r->buffer.pointer[0x10];  in charge_control_end_threshold_show()
498 		r = lg_wmab(&pf_device->dev, WM_BATT_LIMIT, WM_GET, 0);  in charge_control_end_threshold_show()
500 			return -EIO;  in charge_control_end_threshold_show()
502 		if (r->type != ACPI_TYPE_INTEGER) {  in charge_control_end_threshold_show()
504 			return -EIO;  in charge_control_end_threshold_show()
507 		status = r->integer.value;  in charge_control_end_threshold_show()
513 	return sysfs_emit(buf, "%d\n", status);  in charge_control_end_threshold_show()
539 	if (device_create_file(&battery->dev,  in lg_battery_add()
541 		return -ENODEV;  in lg_battery_add()
548 	device_remove_file(&battery->dev,  in lg_battery_remove()
577 	r = lg_wmab(cdev->dev->parent, WM_TLED, WM_SET, brightness > LED_OFF);  in tpad_led_set()
599 	r = lg_wmab(cdev->dev->parent, WM_KEY_LIGHT, WM_SET, val);  in kbd_backlight_set()
613 	if (r->type != ACPI_TYPE_BUFFER || r->buffer.pointer[1] != 0x05) {  in get_kbd_backlight_level()
618 	switch (r->buffer.pointer[0] & 0x27) {  in get_kbd_backlight_level()
636 	return get_kbd_backlight_level(cdev->dev->parent);  in kbd_backlight_get()
683 			dev_dbg(dev, "Fan mode set to mode %u\n", byte);  in lg_laptop_address_space_write()
687 		dev_dbg(dev, "CPU temperature is %u °C\n", byte);  in lg_laptop_address_space_write()
690 		dev_dbg(dev, "CPU lower trip point set to %u °C\n", byte);  in lg_laptop_address_space_write()
693 		dev_dbg(dev, "CPU higher trip point set to %u °C\n", byte);  in lg_laptop_address_space_write()
696 		dev_dbg(dev, "Motherboard temperature is %u °C\n", byte);  in lg_laptop_address_space_write()
699 		dev_dbg(dev, "Motherboard lower trip point set to %u °C\n", byte);  in lg_laptop_address_space_write()
702 		dev_dbg(dev, "Motherboard higher trip point set to %u °C\n", byte);  in lg_laptop_address_space_write()
705 		dev_notice_ratelimited(dev, "Ignoring write to unknown opregion address %llu\n",  in lg_laptop_address_space_write()
726 		dev_notice_ratelimited(dev, "Attempt to read unknown opregion address %llu\n",  in lg_laptop_address_space_read()
758 	acpi_remove_address_space_handler(device->handle, LG_ADDRESS_SPACE_ID,  in lg_laptop_remove_address_space_handler()
777 	status = acpi_install_address_space_handler(device->handle, LG_ADDRESS_SPACE_ID,  in acpi_add()
779 						    NULL, &device->dev);  in acpi_add()
781 		return -ENODEV;  in acpi_add()
783 	ret = devm_add_action_or_reset(&device->dev, lg_laptop_remove_address_space_handler,  in acpi_add()
796 		pr_err("unable to register platform device\n");  in acpi_add()
805 				case 'N':  in acpi_add()
830 				case 'N':  in acpi_add()
843 	pr_info("product: %s  year: %d\n", product ?: "unknown", year);  in acpi_add()
848 	ret = sysfs_create_group(&pf_device->dev.kobj, &dev_attribute_group);  in acpi_add()
853 	led_classdev_register(&pf_device->dev, &kbd_backlight);  in acpi_add()
854 	led_classdev_register(&pf_device->dev, &tpad_led);  in acpi_add()
870 	sysfs_remove_group(&pf_device->dev.kobj, &dev_attribute_group);  in acpi_remove()
890 	.class = "lg-laptop",
905 		pr_debug("Error registering driver\n");  in acpi_init()
906 		return -ENODEV;  in acpi_init()