From: Maximilian Luz luzmaximilian@gmail.com
commit db925d809011c37b246434fdce71209fc2e6c0c2 upstream.
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: Maximilian Luz luzmaximilian@gmail.com Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/hid/hid-ids.h | 1 + drivers/hid/hid-input.c | 2 ++ 2 files changed, 3 insertions(+)
--- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -398,6 +398,7 @@ #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 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -333,6 +333,8 @@ static const struct hid_device_id hid_ba 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 }, {} };