From 7c38e769d5c508939ce5dc26df72602f3c902342 Mon Sep 17 00:00:00 2001
From: Seth Miller <miller.seth@gmail.com>
Date: Mon, 4 Jan 2021 22:58:12 -0600
Subject: [PATCH] HID: Ignore battery for Elan touchscreen on ASUS UX550
Git-commit: 7c38e769d5c508939ce5dc26df72602f3c902342
Patch-mainline: v5.11-rc4
References: git-fixes
Battery status is being reported for the Elan touchscreen on ASUS
UX550 laptops despite not having a batter. It always shows either 0 or
1%.
Signed-off-by: Seth Miller <miller.seth@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
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 4c5f23640f9c..5ba0aa1d2335 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -389,6 +389,7 @@
#define USB_DEVICE_ID_TOSHIBA_CLICK_L9W 0x0401
#define USB_DEVICE_ID_HP_X2 0x074d
#define USB_DEVICE_ID_HP_X2_10_COVER 0x0755
+#define USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN 0x2706
#define USB_VENDOR_ID_ELECOM 0x056e
#define USB_DEVICE_ID_ELECOM_BM084 0x0061
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index dc7f6b4a775c..f23027d2795b 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -322,6 +322,8 @@ 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_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN),
+ HID_BATTERY_QUIRK_IGNORE },
{}
};
--
2.26.2