| Henrik Rydberg | 47c78e8 | 2010-11-27 09:16:48 +0100 | [diff] [blame] | 1 | #ifndef _INPUT_MT_H |
| 2 | #define _INPUT_MT_H |
| 3 | |
| 4 | /* |
| 5 | * Input Multitouch Library |
| 6 | * |
| 7 | * Copyright (c) 2010 Henrik Rydberg |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify it |
| 10 | * under the terms of the GNU General Public License version 2 as published by |
| 11 | * the Free Software Foundation. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/input.h> |
| 15 | |
| Henrik Rydberg | c5f4dec | 2010-12-15 13:50:34 +0100 | [diff] [blame] | 16 | #define TRKID_MAX 0xffff |
| 17 | |
| Henrik Rydberg | 47c78e8 | 2010-11-27 09:16:48 +0100 | [diff] [blame] | 18 | /** |
| 19 | * struct input_mt_slot - represents the state of an input MT slot |
| 20 | * @abs: holds current values of ABS_MT axes for this slot |
| 21 | */ |
| 22 | struct input_mt_slot { |
| 23 | int abs[ABS_MT_LAST - ABS_MT_FIRST + 1]; |
| 24 | }; |
| 25 | |
| 26 | static inline void input_mt_set_value(struct input_mt_slot *slot, |
| 27 | unsigned code, int value) |
| 28 | { |
| 29 | slot->abs[code - ABS_MT_FIRST] = value; |
| 30 | } |
| 31 | |
| 32 | static inline int input_mt_get_value(const struct input_mt_slot *slot, |
| 33 | unsigned code) |
| 34 | { |
| 35 | return slot->abs[code - ABS_MT_FIRST]; |
| 36 | } |
| 37 | |
| Henrik Rydberg | 8cde810 | 2010-11-27 10:50:54 +0100 | [diff] [blame] | 38 | int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots); |
| Henrik Rydberg | 47c78e8 | 2010-11-27 09:16:48 +0100 | [diff] [blame] | 39 | void input_mt_destroy_slots(struct input_dev *dev); |
| 40 | |
| Henrik Rydberg | c5f4dec | 2010-12-15 13:50:34 +0100 | [diff] [blame] | 41 | static inline int input_mt_new_trkid(struct input_dev *dev) |
| 42 | { |
| 43 | return dev->trkid++ & TRKID_MAX; |
| 44 | } |
| 45 | |
| Henrik Rydberg | 47c78e8 | 2010-11-27 09:16:48 +0100 | [diff] [blame] | 46 | static inline void input_mt_slot(struct input_dev *dev, int slot) |
| 47 | { |
| 48 | input_event(dev, EV_ABS, ABS_MT_SLOT, slot); |
| 49 | } |
| 50 | |
| Henrik Rydberg | c5f4dec | 2010-12-15 13:50:34 +0100 | [diff] [blame] | 51 | void input_mt_report_slot_state(struct input_dev *dev, |
| 52 | unsigned int tool_type, bool active); |
| 53 | |
| 54 | void input_mt_report_finger_count(struct input_dev *dev, int count); |
| 55 | void input_mt_report_pointer_emulation(struct input_dev *dev, bool use_count); |
| 56 | |
| Henrik Rydberg | 47c78e8 | 2010-11-27 09:16:48 +0100 | [diff] [blame] | 57 | #endif |