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 * 0.4 01/09/2014 (Benjamin Tissoires <benjamin.tissoires@redhat.com>) 24 * - add UI_GET_SYSNAME ioctl 25 * 0.3 24/05/2006 (Anssi Hannula <anssi.hannulagmail.com>) 26 * - update ff support for the changes in kernel interface 27 * - add UINPUT_VERSION 28 * 0.2 16/10/2004 (Micah Dowty <micah@navi.cx>) 29 * - added force feedback support 30 * - added UI_SET_PHYS 31 * 0.1 20/06/2002 32 * - first public version 33 */ 34 #ifndef __UINPUT_H_ 35 #define __UINPUT_H_ 36 37 #include <uapi/linux/uinput.h> 38 39 #define UINPUT_NAME "uinput" 40 #define UINPUT_BUFFER_SIZE 16 41 #define UINPUT_NUM_REQUESTS 16 42 43 enum uinput_state { UIST_NEW_DEVICE, UIST_SETUP_COMPLETE, UIST_CREATED }; 44 45 struct uinput_request { 46 unsigned int id; 47 unsigned int code; /* UI_FF_UPLOAD, UI_FF_ERASE */ 48 49 int retval; 50 struct completion done; 51 52 union { 53 unsigned int effect_id; 54 struct { 55 struct ff_effect *effect; 56 struct ff_effect *old; 57 } upload; 58 } u; 59 }; 60 61 struct uinput_device { 62 struct input_dev *dev; 63 struct mutex mutex; 64 enum uinput_state state; 65 wait_queue_head_t waitq; 66 unsigned char ready; 67 unsigned char head; 68 unsigned char tail; 69 struct input_event buff[UINPUT_BUFFER_SIZE]; 70 unsigned int ff_effects_max; 71 72 struct uinput_request *requests[UINPUT_NUM_REQUESTS]; 73 wait_queue_head_t requests_waitq; 74 spinlock_t requests_lock; 75 }; 76 #endif /* __UINPUT_H_ */ 77