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 <matan@svgalib.org>
16 #include <linux/input/sparse-keymap.h>
26 	.name           = __stringify(_name),   \
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
127 		return -ENODEV;  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()
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()
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()
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()
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()
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()
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()
556 	.name = "LG Battery Extension",
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()
657 		   .name = PLATFORM_NAME,
758 	acpi_remove_address_space_handler(device->handle, LG_ADDRESS_SPACE_ID,  in lg_laptop_remove_address_space_handler()
766 		.name = PLATFORM_NAME,  in acpi_add()
771 	const char *product;  in acpi_add()  local
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()
799 	product = dmi_get_system_info(DMI_PRODUCT_NAME);  in acpi_add()
800 	if (product && strlen(product) > 4)  in acpi_add()
801 		switch (product[4]) {  in acpi_add()
803 			if (strlen(product) > 5)  in acpi_add()
804 				switch (product[5]) {  in acpi_add()
828 			if (strlen(product) > 5)  in acpi_add()
829 				switch (product[5]) {  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()
889 	.name = "LG Gram Laptop Support",
890 	.class = "lg-laptop",
906 		return -ENODEV;  in acpi_init()