Linux kernel mirror (for testing)
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linux
1/*
2 * PID Force feedback support for hid devices.
3 *
4 * Copyright (c) 2002 Rodrigo Damazio.
5 */
6
7/*
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 * Should you need to contact me, the author, you can do so by
23 * e-mail - mail your message to <rdamazio@lsi.usp.br>
24 */
25
26#define FF_EFFECTS_MAX 64
27
28#define FF_PID_FLAGS_USED 1 /* If the effect exists */
29#define FF_PID_FLAGS_UPDATING 2 /* If the effect is being updated */
30#define FF_PID_FLAGS_PLAYING 3 /* If the effect is currently being played */
31
32#define FF_PID_FALSE 0
33#define FF_PID_TRUE 1
34
35struct hid_pid_effect {
36 unsigned long flags;
37 pid_t owner;
38 unsigned int device_id; /* The device-assigned ID */
39 struct ff_effect effect;
40};
41
42struct hid_ff_pid {
43 struct hid_device *hid;
44 unsigned long gain;
45
46 struct urb *urbffout;
47 struct usb_ctrlrequest ffcr;
48 spinlock_t lock;
49
50 unsigned char ctrl_buffer[8];
51
52 struct hid_pid_effect effects[FF_EFFECTS_MAX];
53};
54
55/*
56 * Constants from the PID usage table (still far from complete)
57 */
58
59#define FF_PID_USAGE_BLOCK_LOAD 0x89UL
60#define FF_PID_USAGE_BLOCK_FREE 0x90UL
61#define FF_PID_USAGE_NEW_EFFECT 0xABUL
62#define FF_PID_USAGE_POOL_REPORT 0x7FUL