HID: Ignore battery for Elan touchscreen on Asus TP420IA

This device has a touchscreen thats report a battery even if it doesn't
have one.
Ask Linux to ignore the battery so it will not always report it as low.

[jkosina@suse.cz: fix whitespace damage]
Signed-off-by: Marco Rodolfi <marco.rodolfi@tuta.io>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index d01d798..46c0ce4 100644 (file)
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -413,6 +413,7 @@
 #define I2C_DEVICE_ID_HP_ENVY_X360_15T_DR100   0x29CF
 #define I2C_DEVICE_ID_HP_ENVY_X360_EU0009NV    0x2CF9
 #define I2C_DEVICE_ID_HP_SPECTRE_X360_15       0x2817
+#define I2C_DEVICE_ID_ASUS_TP420IA_TOUCHSCREEN 0x2BC8
 #define USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN 0x2544
 #define USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN   0x2706
 #define I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN   0x261A

diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 9b59e43..ea139df 100644 (file)
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -370,6 +370,8 @@ static const struct hid_device_id hid_battery_quirks[] = {
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
                USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD),
          HID_BATTERY_QUIRK_IGNORE },
+       { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_ASUS_TP420IA_TOUCHSCREEN),
+         HID_BATTERY_QUIRK_IGNORE },
        { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN),
          HID_BATTERY_QUIRK_IGNORE },
        { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN),