1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * MSI WMI hotkeys
7  * Most stuff taken over from hp-wmi
14 #include <linux/input/sparse-keymap.h>
22 MODULE_DESCRIPTION("MSI laptop WMI hotkeys driver");
25 #define DRV_NAME "msi-wmi"
27 #define MSIWMI_BIOS_GUID "551A1F84-FBDD-4125-91DB-3EA8F44F1D45"
28 #define MSIWMI_MSI_EVENT_GUID "B6F3EEF2-3D2F-49DC-9DE3-85BCE18C62F2"
29 #define MSIWMI_WIND_EVENT_GUID "5B3CC38A-40D9-7245-8AE6-1145B751BE3F"
36 	/* Generic MSI keys (not present on MSI Wind) */
42 	/* MSI Wind keys */
46 	WIND_KEY_WLAN		= 0x5f,	/* Fn+F11 Wi-Fi toggle */
63 	/* These are unknown WMI events found on MSI Wind */
68 	/* These are MSI Wind keys that should be handled via WMI */
100 		return -EIO;  in msi_wmi_query_block()
104 	if (!obj || obj->type != ACPI_TYPE_INTEGER) {  in msi_wmi_query_block()
107 			       "type: %d - buffer length:%d\n", obj->type,  in msi_wmi_query_block()
108 			       obj->type == ACPI_TYPE_BUFFER ?  in msi_wmi_query_block()
109 			       obj->buffer.length : 0);  in msi_wmi_query_block()
112 		return -EINVAL;  in msi_wmi_query_block()
114 	*ret = obj->integer.value;  in msi_wmi_query_block()
125 	pr_debug("Going to set block of instance: %d - value: %d\n",  in msi_wmi_set_block()
141 		return -EINVAL;  in bl_get()
146 			pr_debug("Current backlight level: 0x%X - index: %d\n",  in bl_get()
152 		pr_err("get: Invalid brightness value: 0x%X\n", ret);  in bl_get()
153 		return -EINVAL;  in bl_get()
160 	int bright = bd->props.brightness;  in bl_set_status()
162 		return -EINVAL;  in bl_set_status()
177 	if (obj && obj->type == ACPI_TYPE_INTEGER) {  in msi_wmi_notify()
178 		int eventcode = obj->integer.value;  in msi_wmi_notify()
179 		pr_debug("Eventcode: 0x%x\n", eventcode);  in msi_wmi_notify()
183 			pr_info("Unknown key pressed - %x\n", eventcode);  in msi_wmi_notify()
187 		if (event_wmi->quirk_last_pressed) {  in msi_wmi_notify()
191 			   timeframe -> Key press may result in 10-20 GPEs */  in msi_wmi_notify()
193 				pr_debug("Suppressed key event 0x%X - "  in msi_wmi_notify()
195 					 key->code, ktime_to_us(diff));  in msi_wmi_notify()
201 		if (key->type == KE_KEY &&  in msi_wmi_notify()
204 		(key->code != MSI_KEY_BRIGHTNESSUP &&  in msi_wmi_notify()
205 		key->code != MSI_KEY_BRIGHTNESSDOWN))) {  in msi_wmi_notify()
206 			pr_debug("Send key: 0x%X - Input layer keycode: %d\n",  in msi_wmi_notify()
207 				 key->code, key->keycode);  in msi_wmi_notify()
222 	props.max_brightness = ARRAY_SIZE(backlight_map) - 1;  in msi_wmi_backlight_setup()
235 	backlight->props.brightness = err;  in msi_wmi_backlight_setup()
246 		return -ENOMEM;  in msi_wmi_input_setup()
248 	msi_wmi_input_dev->name = "MSI WMI hotkeys";  in msi_wmi_input_setup()
249 	msi_wmi_input_dev->phys = "wmi/input0";  in msi_wmi_input_setup()
250 	msi_wmi_input_dev->id.bustype = BUS_HOST;  in msi_wmi_input_setup()
308 		pr_err("This machine doesn't have neither MSI-hotkeys nor backlight through WMI\n");  in msi_wmi_init()
309 		return -ENODEV;  in msi_wmi_init()
316 		wmi_remove_notify_handler(event_wmi->guid);  in msi_wmi_init()
326 		wmi_remove_notify_handler(event_wmi->guid);  in msi_wmi_exit()