Report contact count
void input_mt_report_finger_count(struct input_dev * dev, int count);
dev
input device with allocated MT slots
count
the number of contacts
Reports the contact count via BTN_TOOL_FINGER, BTN_TOOL_DOUBLETAP, BTN_TOOL_TRIPLETAP and BTN_TOOL_QUADTAP.
The input core ensures only the KEY events already setup for this device will produce output.