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