• Jason Gerecke's avatar
    HID: wacom: Do not completely map WACOM_HID_WD_TOUCHRINGSTATUS usage · 8d411cbf
    Jason Gerecke authored
    The WACOM_HID_WD_TOUCHRINGSTATUS usage is a single bit which tells us
    whether the touchring is currently in use or not. Because we need to
    reset the axis value to 0 when the finger is removed, we call
    'wacom_map_usage' to ensure that the required type/code values are
    associated with the usage. The 'wacom_map_usage' also sets up the axis
    range and resolution, however, which is not desired in this particular
    case.
    
    Although xf86-input-wacom doesn't do really do anything with the ring's
    range or resolution, the libinput driver (for Wayland environments)
    uses these values to provide proper angle indications to userspace.
    
    Fixes: 60a22186 ("HID: wacom: generic: add support for touchring")
    Cc: stable@vger.kernel.org
    Signed-off-by: default avatarJason Gerecke <jason.gerecke@wacom.com>
    Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
    8d411cbf
wacom_wac.c 140 KB