/* *  PID Force feedback support for hid devices. * *  Copyright (c) 2002 Rodrigo Damazio. *//* * 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 * * Should you need to contact me, the author, you can do so by * e-mail - mail your message to <rdamazio@lsi.usp.br> */#define FF_EFFECTS_MAX 64#define FF_PID_FLAGS_USED	1  /* If the effect exists */#define FF_PID_FLAGS_UPDATING	2  /* If the effect is being updated */#define FF_PID_FLAGS_PLAYING	3  /* If the effect is currently being played */#define FF_PID_FALSE	0#define FF_PID_TRUE	1struct hid_pid_effect {    unsigned long flags;    pid_t owner;    unsigned int device_id;  // The device-assigned ID    struct ff_effect effect;};struct hid_ff_pid {    struct hid_device *hid;    unsigned long int gain;    struct urb *urbffout;    struct usb_ctrlrequest ffcr;    spinlock_t lock;    char ctrl_buffer[8];    struct hid_pid_effect effects[FF_EFFECTS_MAX];};/* * Constants from the PID usage table (still far from complete) */#define FF_PID_USAGE_BLOCK_LOAD 	0x89UL#define FF_PID_USAGE_BLOCK_FREE		0x90UL#define FF_PID_USAGE_NEW_EFFECT 	0xABUL#define FF_PID_USAGE_POOL_REPORT	0x7FUL