Commit db925d80 authored by Maximilian Luz's avatar Maximilian Luz Committed by Jiri Kosina
Browse files

HID: hid-input: add Surface Go battery quirk 



Similar to the Surface Go (1), the (Elantech) touchscreen/digitizer in
the Surface Go 2 mistakenly reports the battery of the stylus. Instead
of over the touchscreen device, battery information is provided via
bluetooth and the touchscreen device reports an empty battery.

Apply the HID_BATTERY_QUIRK_IGNORE quirk to ignore this battery and
prevent the erroneous low battery warnings.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarMaximilian Luz <luzmaximilian@gmail.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 15b28156

drivers/hid/hid-ids.h

+1 −0
Original line number Diff line number Diff line
@@ -413,6 +413,7 @@ 
#define USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN	0x2544

#define USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN	0x2706

#define I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN	0x261A

#define I2C_DEVICE_ID_SURFACE_GO2_TOUCHSCREEN	0x2A1C



#define USB_VENDOR_ID_ELECOM		0x056e

#define USB_DEVICE_ID_ELECOM_BM084	0x0061

drivers/hid/hid-input.c

+2 −0
Original line number Diff line number Diff line
@@ -381,6 +381,8 @@ static const struct hid_device_id hid_battery_quirks[] = { 
	  HID_BATTERY_QUIRK_IGNORE },

	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN),

	  HID_BATTERY_QUIRK_IGNORE },

	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO2_TOUCHSCREEN),

	  HID_BATTERY_QUIRK_IGNORE },

	{}

};