INPUT_MT_GET_SLOT_BY(9)                  Input Subsystem                  INPUT_MT_GET_SLOT_BY(9)



NAME
       input_mt_get_slot_by_key - return slot matching key

SYNOPSIS
       int input_mt_get_slot_by_key(struct input_dev * dev, int key);

ARGUMENTS
       dev
           input device with allocated MT slots

       key
           the key of the sought slot

DESCRIPTION
       Returns the slot of the given key, if it exists, otherwise set the key on the first unused
       slot and return.

       If no available slot can be found, -1 is returned. Note that for this function to work
       properly, input_mt_sync_frame has to be called at each frame.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   INPUT_MT_GET_SLOT_BY(9)