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INPUT_MT_INIT_SLOTS(9) | Input Subsystem | INPUT_MT_INIT_SLOTS(9) |
NAME¶
input_mt_init_slots - initialize MT input slotsSYNOPSIS¶
int
input_mt_init_slots(struct input_dev * dev,
unsigned int num_slots,
unsigned int flags);
ARGUMENTS¶
devinput device supporting MT events and finger
tracking
num_slots
number of slots used by the device
flags
mt tasks to handle in core
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.COPYRIGHT¶
January 2017 | Kernel Hackers Manual 4.8. |