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make-42-2Jiri Kosina
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HID: Ignore battery for ELAN touchscreens 2F2C and 4116
At least ASUS Zenbook 14 (2023) and ASUS Zenbook 14 Pro (2023) are affected. The touchscreen reports a battery status of 0% and jumps to 1% when a stylus is used. The device ID was added and the battery ignore quirk was enabled for it. [[email protected]: reformatted changelog a bit] Signed-off-by: Louis Dalibard <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
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drivers/hid/hid-ids.h

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@@ -423,6 +423,8 @@
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#define I2C_DEVICE_ID_HP_SPECTRE_X360_13_AW0020NG 0x29DF
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#define I2C_DEVICE_ID_ASUS_TP420IA_TOUCHSCREEN 0x2BC8
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#define I2C_DEVICE_ID_ASUS_GV301RA_TOUCHSCREEN 0x2C82
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#define I2C_DEVICE_ID_ASUS_UX3402_TOUCHSCREEN 0x2F2C
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#define I2C_DEVICE_ID_ASUS_UX6404_TOUCHSCREEN 0x4116
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#define USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN 0x2544
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#define USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN 0x2706
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#define I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN 0x261A

drivers/hid/hid-input.c

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@@ -377,6 +377,10 @@ static const struct hid_device_id hid_battery_quirks[] = {
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HID_BATTERY_QUIRK_IGNORE },
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{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_ASUS_GV301RA_TOUCHSCREEN),
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HID_BATTERY_QUIRK_IGNORE },
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{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_ASUS_UX3402_TOUCHSCREEN),
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HID_BATTERY_QUIRK_IGNORE },
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{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_ASUS_UX6404_TOUCHSCREEN),
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HID_BATTERY_QUIRK_IGNORE },
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{ HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN),
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HID_BATTERY_QUIRK_IGNORE },
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{ HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN),

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