• Tobias Auerochs's avatar
    HID: rmi: Use SET_REPORT request on control endpoint for Acer Switch 3 and 5 · 10235380
    Tobias Auerochs authored
    The touchpad on the cover keyboard for the Acer Switch 3 and 5 does not
    work as-is under Linux. Both devices have the same usb id for the cover
    keyboard.
    
    The kernel correctly assigns the hid-rmi driver to the device using usbhid
    for transport.
    Any attempts of hid-rmi to talk to the device using hid_hw_output_report
    fail however as usbhid does not have a working urbout due to the lack of
    any out endpoints.
    
    Looking through Wireshark usbmon recordings from the Windows Synaptics
    driver for this computer running inside of QEMU shows that it should be
    using SET_REPORT requests instead.
    
    This replaces the hid_hw_output_report in hid-rmi with a
    hid_hw_raw_request for this device, which is at least enough to enable
    the kernel to get working multi-touch input.
    Signed-off-by: default avatarTobias Auerochs <tobi291019@gmail.com>
    Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
    10235380
hid-ids.h 46.1 KB