[PATCH AUTOSEL 6.1 08/24] HID: Ignore battery for Elan touchscreen on Asus TP420IA

[Sasha Levin <sashal@kernel.org>]

From: "marco.rodolfi@tuta.io" <marco.rodolfi@tuta.io>

[ Upstream commit cb963b2c011a62838852c902eccb3f72e5d3dbb6 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-ids.h   | 1 +
 drivers/hid/hid-input.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index d01d798ebedca..46c0ce4203c08 100644
--- 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 3ee5a9fea20e6..3736b0afbff73 100644
--- 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),
-- 
2.39.0