| 1 | |
| 2 | * User level driver support for input subsystem
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| 3 | *
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| 4 | * Heavily based on evdev.c by Vojtech Pavlik
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or modify
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| 7 | * it under the terms of the GNU General Public License as published by
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| 8 | * the Free Software Foundation; either version 2 of the License, or
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| 9 | * (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 19 | *
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| 20 | * Author: Aristeu Sergio Rozanski Filho <[email protected]>
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| 21 | *
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| 22 | * Changes/Revisions:
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| 23 | * 0.5 08/13/2015 (David Herrmann <[email protected]> &
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| 24 | * Benjamin Tissoires <[email protected]>)
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| 25 | * - add UI_DEV_SETUP ioctl
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| 26 | * - add UI_ABS_SETUP ioctl
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| 27 | * - add UI_GET_VERSION ioctl
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| 28 | * 0.4 01/09/2014 (Benjamin Tissoires <[email protected]>)
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| 29 | * - add UI_GET_SYSNAME ioctl
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| 30 | * 0.3 24/05/2006 (Anssi Hannula <anssi.hannulagmail.com>)
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| 31 | * - update ff support for the changes in kernel interface
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| 32 | * - add UINPUT_VERSION
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| 33 | * 0.2 16/10/2004 (Micah Dowty <[email protected]>)
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| 34 | * - added force feedback support
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| 35 | * - added UI_SET_PHYS
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| 36 | * 0.1 20/06/2002
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| 37 | * - first public version
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| 38 |
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| 39 | #ifndef __UINPUT_H_
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| 40 | #define __UINPUT_H_
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| 41 |
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| 42 | #include <uapi/linux/uinput.h>
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| 43 |
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| 44 | #define UINPUT_NAME "uinput"
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| 45 | #define UINPUT_BUFFER_SIZE 16
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| 46 | #define UINPUT_NUM_REQUESTS 16
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| 47 |
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| 48 | enum uinput_state { UIST_NEW_DEVICE, UIST_SETUP_COMPLETE, UIST_CREATED };
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| 49 |
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| 50 | struct uinput_request {
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| 51 | unsigned int id;
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| 52 | unsigned int code;
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| 53 |
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| 54 | int retval;
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| 55 | struct completion done;
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| 56 |
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| 57 | union {
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| 58 | unsigned int effect_id;
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| 59 | struct {
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| 60 | struct ff_effect *effect;
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| 61 | struct ff_effect *old;
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| 62 | } upload;
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| 63 | } u;
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| 64 | };
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| 65 |
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| 66 | struct uinput_device {
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| 67 | struct input_dev *dev;
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| 68 | struct mutex mutex;
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| 69 | enum uinput_state state;
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| 70 | wait_queue_head_t waitq;
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| 71 | unsigned char ready;
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| 72 | unsigned char head;
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| 73 | unsigned char tail;
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| 74 | struct input_event buff[UINPUT_BUFFER_SIZE];
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| 75 | unsigned int ff_effects_max;
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| 76 |
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| 77 | struct uinput_request *requests[UINPUT_NUM_REQUESTS];
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| 78 | wait_queue_head_t requests_waitq;
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| 79 | spinlock_t requests_lock;
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| 80 | };
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| 81 | #endif
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