| #ifndef __UINPUT_H_ |
| #define __UINPUT_H_ |
| /* |
| * User level driver support for input subsystem |
| * |
| * Heavily based on evdev.c by Vojtech Pavlik |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| * Author: Aristeu Sergio Rozanski Filho <aris@cathedrallabs.org> |
| * |
| * Changes/Revisions: |
| * 0.3 24/05/2006 (Anssi Hannula <anssi.hannulagmail.com>) |
| * - update ff support for the changes in kernel interface |
| * - add UINPUT_VERSION |
| * 0.2 16/10/2004 (Micah Dowty <micah@navi.cx>) |
| * - added force feedback support |
| * - added UI_SET_PHYS |
| * 0.1 20/06/2002 |
| * - first public version |
| */ |
| |
| #include <linux/input.h> |
| |
| #define UINPUT_VERSION 3 |
| |
| |
| struct uinput_ff_upload { |
| int request_id; |
| int retval; |
| struct ff_effect effect; |
| struct ff_effect old; |
| }; |
| |
| struct uinput_ff_erase { |
| int request_id; |
| int retval; |
| int effect_id; |
| }; |
| |
| /* ioctl */ |
| #define UINPUT_IOCTL_BASE 'U' |
| #define UI_DEV_CREATE _IO(UINPUT_IOCTL_BASE, 1) |
| #define UI_DEV_DESTROY _IO(UINPUT_IOCTL_BASE, 2) |
| |
| #define UI_SET_EVBIT _IOW(UINPUT_IOCTL_BASE, 100, int) |
| #define UI_SET_KEYBIT _IOW(UINPUT_IOCTL_BASE, 101, int) |
| #define UI_SET_RELBIT _IOW(UINPUT_IOCTL_BASE, 102, int) |
| #define UI_SET_ABSBIT _IOW(UINPUT_IOCTL_BASE, 103, int) |
| #define UI_SET_MSCBIT _IOW(UINPUT_IOCTL_BASE, 104, int) |
| #define UI_SET_LEDBIT _IOW(UINPUT_IOCTL_BASE, 105, int) |
| #define UI_SET_SNDBIT _IOW(UINPUT_IOCTL_BASE, 106, int) |
| #define UI_SET_FFBIT _IOW(UINPUT_IOCTL_BASE, 107, int) |
| #define UI_SET_PHYS _IOW(UINPUT_IOCTL_BASE, 108, char*) |
| #define UI_SET_SWBIT _IOW(UINPUT_IOCTL_BASE, 109, int) |
| #define UI_SET_PROPBIT _IOW(UINPUT_IOCTL_BASE, 110, int) |
| |
| #define UI_BEGIN_FF_UPLOAD _IOWR(UINPUT_IOCTL_BASE, 200, struct uinput_ff_upload) |
| #define UI_END_FF_UPLOAD _IOW(UINPUT_IOCTL_BASE, 201, struct uinput_ff_upload) |
| #define UI_BEGIN_FF_ERASE _IOWR(UINPUT_IOCTL_BASE, 202, struct uinput_ff_erase) |
| #define UI_END_FF_ERASE _IOW(UINPUT_IOCTL_BASE, 203, struct uinput_ff_erase) |
| |
| /* |
| * To write a force-feedback-capable driver, the upload_effect |
| * and erase_effect callbacks in input_dev must be implemented. |
| * The uinput driver will generate a fake input event when one of |
| * these callbacks are invoked. The userspace code then uses |
| * ioctls to retrieve additional parameters and send the return code. |
| * The callback blocks until this return code is sent. |
| * |
| * The described callback mechanism is only used if ff_effects_max |
| * is set. |
| * |
| * To implement upload_effect(): |
| * 1. Wait for an event with type == EV_UINPUT and code == UI_FF_UPLOAD. |
| * A request ID will be given in 'value'. |
| * 2. Allocate a uinput_ff_upload struct, fill in request_id with |
| * the 'value' from the EV_UINPUT event. |
| * 3. Issue a UI_BEGIN_FF_UPLOAD ioctl, giving it the |
| * uinput_ff_upload struct. It will be filled in with the |
| * ff_effects passed to upload_effect(). |
| * 4. Perform the effect upload, and place a return code back into |
| the uinput_ff_upload struct. |
| * 5. Issue a UI_END_FF_UPLOAD ioctl, also giving it the |
| * uinput_ff_upload_effect struct. This will complete execution |
| * of our upload_effect() handler. |
| * |
| * To implement erase_effect(): |
| * 1. Wait for an event with type == EV_UINPUT and code == UI_FF_ERASE. |
| * A request ID will be given in 'value'. |
| * 2. Allocate a uinput_ff_erase struct, fill in request_id with |
| * the 'value' from the EV_UINPUT event. |
| * 3. Issue a UI_BEGIN_FF_ERASE ioctl, giving it the |
| * uinput_ff_erase struct. It will be filled in with the |
| * effect ID passed to erase_effect(). |
| * 4. Perform the effect erasure, and place a return code back |
| * into the uinput_ff_erase struct. |
| * 5. Issue a UI_END_FF_ERASE ioctl, also giving it the |
| * uinput_ff_erase_effect struct. This will complete execution |
| * of our erase_effect() handler. |
| */ |
| |
| /* |
| * This is the new event type, used only by uinput. |
| * 'code' is UI_FF_UPLOAD or UI_FF_ERASE, and 'value' |
| * is the unique request ID. This number was picked |
| * arbitrarily, above EV_MAX (since the input system |
| * never sees it) but in the range of a 16-bit int. |
| */ |
| #define EV_UINPUT 0x0101 |
| #define UI_FF_UPLOAD 1 |
| #define UI_FF_ERASE 2 |
| |
| #define UINPUT_MAX_NAME_SIZE 80 |
| struct uinput_user_dev { |
| char name[UINPUT_MAX_NAME_SIZE]; |
| struct input_id id; |
| int ff_effects_max; |
| int absmax[ABS_CNT]; |
| int absmin[ABS_CNT]; |
| int absfuzz[ABS_CNT]; |
| int absflat[ABS_CNT]; |
| }; |
| #endif /* __UINPUT_H_ */ |
| |