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input_mt_init_slots(9) [centos man page]

INPUT_MT_INIT_SLOTS(9)						  Input Subsystem					    INPUT_MT_INIT_SLOTS(9)

NAME
input_mt_init_slots - initialize MT input slots SYNOPSIS
int input_mt_init_slots(struct input_dev * dev, unsigned int num_slots, unsigned int flags); 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 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
Kernel Hackers Manual 3.10 June 2014 INPUT_MT_INIT_SLOTS(9)

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STRUCT 
INPUT_HANDLER(9) Input Subsystem STRUCT INPUT_HANDLER(9) NAME
struct_input_handler - implements one of interfaces for input devices SYNOPSIS
struct input_handler { void * private; void (* event) (struct input_handle *handle, unsigned int type, unsigned int code, int value); void (* events) (struct input_handle *handle,const struct input_value *vals, unsigned int count); bool (* filter) (struct input_handle *handle, unsigned int type, unsigned int code, int value); bool (* match) (struct input_handler *handler, struct input_dev *dev); int (* connect) (struct input_handler *handler, struct input_dev *dev, const struct input_device_id *id); void (* disconnect) (struct input_handle *handle); void (* start) (struct input_handle *handle); bool legacy_minors; int minor; const char * name; const struct input_device_id * id_table; struct list_head h_list; struct list_head node; }; MEMBERS
private driver-specific data event event handler. This method is being called by input core with interrupts disabled and dev->event_lock spinlock held and so it may not sleep events event sequence handler. This method is being called by input core with interrupts disabled and dev->event_lock spinlock held and so it may not sleep filter similar to event; separates normal event handlers from "filters". match called after comparing device's id with handler's id_table to perform fine-grained matching between device and handler connect called when attaching a handler to an input device disconnect disconnects a handler from input device start starts handler for given handle. This function is called by input core right after connect method and also when a process that "grabbed" a device releases it legacy_minors set to true by drivers using legacy minor ranges minor beginning of range of 32 legacy minors for devices this driver can provide name name of the handler, to be shown in /proc/bus/input/handlers id_table pointer to a table of input_device_ids this driver can handle h_list list of input handles associated with the handler node for placing the driver onto input_handler_list DESCRIPTION
Input handlers attach to input devices and create input handles. There are likely several handlers attached to any given input device at the same time. All of them will get their copy of input event generated by the device. The very same structure is used to implement input filters. Input core allows filters to run first and will not pass event to regular handlers if any of the filters indicate that the event should be filtered (by returning true from their filter method). Note that input core serializes calls to connect and disconnect methods. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 STRUCT INPUT_HANDLER(9)
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