| #ifndef _INPUT_MT_H |
| #define _INPUT_MT_H |
| |
| /* |
| * Input Multitouch Library |
| * |
| * Copyright (c) 2010 Henrik Rydberg |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 as published by |
| * the Free Software Foundation. |
| */ |
| |
| #include <linux/input.h> |
| |
| #define TRKID_MAX 0xffff |
| |
| /** |
| * struct input_mt_slot - represents the state of an input MT slot |
| * @abs: holds current values of ABS_MT axes for this slot |
| */ |
| struct input_mt_slot { |
| int abs[ABS_MT_LAST - ABS_MT_FIRST + 1]; |
| }; |
| |
| static inline void input_mt_set_value(struct input_mt_slot *slot, |
| unsigned code, int value) |
| { |
| slot->abs[code - ABS_MT_FIRST] = value; |
| } |
| |
| static inline int input_mt_get_value(const struct input_mt_slot *slot, |
| unsigned code) |
| { |
| return slot->abs[code - ABS_MT_FIRST]; |
| } |
| |
| int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots); |
| void input_mt_destroy_slots(struct input_dev *dev); |
| |
| static inline int input_mt_new_trkid(struct input_dev *dev) |
| { |
| return dev->trkid++ & TRKID_MAX; |
| } |
| |
| static inline void input_mt_slot(struct input_dev *dev, int slot) |
| { |
| input_event(dev, EV_ABS, ABS_MT_SLOT, slot); |
| } |
| |
| static inline bool input_is_mt_value(int axis) |
| { |
| return axis >= ABS_MT_FIRST && axis <= ABS_MT_LAST; |
| } |
| |
| static inline bool input_is_mt_axis(int axis) |
| { |
| return axis == ABS_MT_SLOT || input_is_mt_value(axis); |
| } |
| |
| void input_mt_report_slot_state(struct input_dev *dev, |
| unsigned int tool_type, bool active); |
| |
| void input_mt_report_finger_count(struct input_dev *dev, int count); |
| void input_mt_report_pointer_emulation(struct input_dev *dev, bool use_count); |
| |
| #endif |
