1. NAME▲

input_mt_init_slots - initialize MT input slots

2. SYNOPSIS ▲

int input_mt_init_slots(struct input_dev *  dev , unsigned int  num_slots , unsigned int  flags );

3. ARGUMENTS ▲

dev
    input device supporting MT events and finger tracking

num_slots
    number of slots used by the device

flags
    mt tasks to handle in core

4. DESCRIPTION ▲

This function allocates all necessary memory for MT slot handling in the input device, prepares the ABS_MT_SLOT and ABS_MT_TRACKING_ID events for use and sets up appropriate buffers. Depending on the flags set, it also performs pointer emulation and frame synchronization.

May be called repeatedly. Returns -EINVAL if attempting to reinitialize with a different number of slots.

5. COPYRIGHT ▲