1 /*
2 * $Id: iforce.h,v 1.13 2002/07/07 10:22:50 jdeneux Exp $
3 *
4 * Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
5 * Copyright (c) 2001-2002, 2007 Johann Deneux <johann.deneux@gmail.com>
6 *
7 * USB/RS232 I-Force joysticks and wheels.
8 */
9
10 /*
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 *
25 * Should you need to contact me, the author, you can do so either by
26 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
27 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
28 */
29
30 #include <linux/kernel.h>
31 #include <linux/slab.h>
32 #include <linux/input.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/spinlock.h>
36 #include <linux/usb.h>
37 #include <linux/serio.h>
38 #include <linux/circ_buf.h>
39 #include <linux/mutex.h>
40
41 /* This module provides arbitrary resource management routines.
42 * I use it to manage the device's memory.
43 * Despite the name of this module, I am *not* going to access the ioports.
44 */
45 #include <linux/ioport.h>
46
47
48 #define IFORCE_MAX_LENGTH 16
49
50 /* iforce::bus */
51 #define IFORCE_232 1
52 #define IFORCE_USB 2
53
54 #define IFORCE_EFFECTS_MAX 32
55
56 /* Each force feedback effect is made of one core effect, which can be
57 * associated to at most to effect modifiers
58 */
59 #define FF_MOD1_IS_USED 0
60 #define FF_MOD2_IS_USED 1
61 #define FF_CORE_IS_USED 2
62 #define FF_CORE_IS_PLAYED 3 /* Effect is currently being played */
63 #define FF_CORE_SHOULD_PLAY 4 /* User wants the effect to be played */
64 #define FF_CORE_UPDATE 5 /* Effect is being updated */
65 #define FF_MODCORE_CNT 6
66
67 struct iforce_core_effect {
68 /* Information about where modifiers are stored in the device's memory */
69 struct resource mod1_chunk;
70 struct resource mod2_chunk;
71 unsigned long flags[BITS_TO_LONGS(FF_MODCORE_CNT)];
72 };
73
74 #define FF_CMD_EFFECT 0x010e
75 #define FF_CMD_ENVELOPE 0x0208
76 #define FF_CMD_MAGNITUDE 0x0303
77 #define FF_CMD_PERIOD 0x0407
78 #define FF_CMD_CONDITION 0x050a
79
80 #define FF_CMD_AUTOCENTER 0x4002
81 #define FF_CMD_PLAY 0x4103
82 #define FF_CMD_ENABLE 0x4201
83 #define FF_CMD_GAIN 0x4301
84
85 #define FF_CMD_QUERY 0xff01
86
87 /* Buffer for async write */
88 #define XMIT_SIZE 256
89 #define XMIT_INC(var, n) (var)+=n; (var)&= XMIT_SIZE -1
90 /* iforce::xmit_flags */
91 #define IFORCE_XMIT_RUNNING 0
92 #define IFORCE_XMIT_AGAIN 1
93
94 struct iforce_device {
95 u16 idvendor;
96 u16 idproduct;
97 char *name;
98 signed short *btn;
99 signed short *abs;
100 signed short *ff;
101 };
102
103 struct iforce {
104 struct input_dev *dev; /* Input device interface */
105 struct iforce_device *type;
106 int bus;
107
108 unsigned char data[IFORCE_MAX_LENGTH];
109 unsigned char edata[IFORCE_MAX_LENGTH];
110 u16 ecmd;
111 u16 expect_packet;
112
113 #ifdef CONFIG_JOYSTICK_IFORCE_232
114 struct serio *serio; /* RS232 transfer */
115 int idx, pkt, len, id;
116 unsigned char csum;
117 #endif
118 #ifdef CONFIG_JOYSTICK_IFORCE_USB
119 struct usb_device *usbdev; /* USB transfer */
120 struct urb *irq, *out, *ctrl;
121 struct usb_ctrlrequest cr;
122 #endif
123 spinlock_t xmit_lock;
124 /* Buffer used for asynchronous sending of bytes to the device */
125 struct circ_buf xmit;
126 unsigned char xmit_data[XMIT_SIZE];
127 unsigned long xmit_flags[1];
128
129 /* Force Feedback */
130 wait_queue_head_t wait;
131 struct resource device_memory;
132 struct iforce_core_effect core_effects[IFORCE_EFFECTS_MAX];
133 struct mutex mem_mutex;
134 };
135
136 /* Get hi and low bytes of a 16-bits int */
137 #define HI(a) ((unsigned char)((a) >> 8))
138 #define LO(a) ((unsigned char)((a) & 0xff))
139
140 /* For many parameters, it seems that 0x80 is a special value that should
141 * be avoided. Instead, we replace this value by 0x7f
142 */
143 #define HIFIX80(a) ((unsigned char)(((a)<0? (a)+255 : (a))>>8))
144
145 /* Encode a time value */
146 #define TIME_SCALE(a) (a)
147
148
149 /* Public functions */
150 /* iforce-serio.c */
151 void iforce_serial_xmit(struct iforce *iforce);
152
153 /* iforce-usb.c */
154 void iforce_usb_xmit(struct iforce *iforce);
155 void iforce_usb_delete(struct iforce *iforce);
156
157 /* iforce-main.c */
158 int iforce_init_device(struct iforce *iforce);
159 void iforce_delete_device(struct iforce *iforce);
160
161 /* iforce-packets.c */
162 int iforce_control_playback(struct iforce*, u16 id, unsigned int);
163 void iforce_process_packet(struct iforce *iforce, u16 cmd, unsigned char *data);
164 int iforce_send_packet(struct iforce *iforce, u16 cmd, unsigned char* data);
165 void iforce_dump_packet(char *msg, u16 cmd, unsigned char *data) ;
166 int iforce_get_id_packet(struct iforce *iforce, char *packet);
167
168 /* iforce-ff.c */
169 int iforce_upload_periodic(struct iforce *, struct ff_effect *, struct ff_effect *);
170 int iforce_upload_constant(struct iforce *, struct ff_effect *, struct ff_effect *);
171 int iforce_upload_condition(struct iforce *, struct ff_effect *, struct ff_effect *);
172
173 /* Public variables */
174 extern struct serio_driver iforce_serio_drv;
175 extern struct usb_driver iforce_usb_driver;
176
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