OpenCores
URL https://opencores.org/ocsvn/test_project/test_project/trunk

Subversion Repositories test_project

[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [input/] [joystick/] [spaceorb.c] - Blame information for rev 62

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 62 marcus.erl
/*
2
 * $Id: spaceorb.c,v 1.15 2002/01/22 20:29:19 vojtech Exp $
3
 *
4
 *  Copyright (c) 1999-2001 Vojtech Pavlik
5
 *
6
 *  Based on the work of:
7
 *      David Thompson
8
 */
9
 
10
/*
11
 * SpaceTec SpaceOrb 360 and Avenger 6dof controller driver for Linux
12
 */
13
 
14
/*
15
 * This program is free software; you can redistribute it and/or modify
16
 * it under the terms of the GNU General Public License as published by
17
 * the Free Software Foundation; either version 2 of the License, or
18
 * (at your option) any later version.
19
 *
20
 * This program is distributed in the hope that it will be useful,
21
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23
 * GNU General Public License for more details.
24
 *
25
 * You should have received a copy of the GNU General Public License
26
 * along with this program; if not, write to the Free Software
27
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28
 *
29
 *  Should you need to contact me, the author, you can do so either by
30
 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
31
 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
32
 */
33
 
34
#include <linux/kernel.h>
35
#include <linux/slab.h>
36
#include <linux/module.h>
37
#include <linux/init.h>
38
#include <linux/input.h>
39
#include <linux/serio.h>
40
 
41
#define DRIVER_DESC     "SpaceTec SpaceOrb 360 and Avenger 6dof controller driver"
42
 
43
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
44
MODULE_DESCRIPTION(DRIVER_DESC);
45
MODULE_LICENSE("GPL");
46
 
47
/*
48
 * Constants.
49
 */
50
 
51
#define SPACEORB_MAX_LENGTH     64
52
 
53
static int spaceorb_buttons[] = { BTN_TL, BTN_TR, BTN_Y, BTN_X, BTN_B, BTN_A };
54
static int spaceorb_axes[] = { ABS_X, ABS_Y, ABS_Z, ABS_RX, ABS_RY, ABS_RZ };
55
 
56
/*
57
 * Per-Orb data.
58
 */
59
 
60
struct spaceorb {
61
        struct input_dev *dev;
62
        int idx;
63
        unsigned char data[SPACEORB_MAX_LENGTH];
64
        char phys[32];
65
};
66
 
67
static unsigned char spaceorb_xor[] = "SpaceWare";
68
 
69
static unsigned char *spaceorb_errors[] = { "EEPROM storing 0 failed", "Receive queue overflow", "Transmit queue timeout",
70
                "Bad packet", "Power brown-out", "EEPROM checksum error", "Hardware fault" };
71
 
72
/*
73
 * spaceorb_process_packet() decodes packets the driver receives from the
74
 * SpaceOrb.
75
 */
76
 
77
static void spaceorb_process_packet(struct spaceorb *spaceorb)
78
{
79
        struct input_dev *dev = spaceorb->dev;
80
        unsigned char *data = spaceorb->data;
81
        unsigned char c = 0;
82
        int axes[6];
83
        int i;
84
 
85
        if (spaceorb->idx < 2) return;
86
        for (i = 0; i < spaceorb->idx; i++) c ^= data[i];
87
        if (c) return;
88
 
89
        switch (data[0]) {
90
 
91
                case 'R':                               /* Reset packet */
92
                        spaceorb->data[spaceorb->idx - 1] = 0;
93
                        for (i = 1; i < spaceorb->idx && spaceorb->data[i] == ' '; i++);
94
                        printk(KERN_INFO "input: %s [%s] is %s\n",
95
                                 dev->name, spaceorb->data + i, spaceorb->phys);
96
                        break;
97
 
98
                case 'D':                               /* Ball + button data */
99
                        if (spaceorb->idx != 12) return;
100
                        for (i = 0; i < 9; i++) spaceorb->data[i+2] ^= spaceorb_xor[i];
101
                        axes[0] = ( data[2]       << 3) | (data[ 3] >> 4);
102
                        axes[1] = ((data[3] & 0x0f) << 6) | (data[ 4] >> 1);
103
                        axes[2] = ((data[4] & 0x01) << 9) | (data[ 5] << 2) | (data[4] >> 5);
104
                        axes[3] = ((data[6] & 0x1f) << 5) | (data[ 7] >> 2);
105
                        axes[4] = ((data[7] & 0x03) << 8) | (data[ 8] << 1) | (data[7] >> 6);
106
                        axes[5] = ((data[9] & 0x3f) << 4) | (data[10] >> 3);
107
                        for (i = 0; i < 6; i++)
108
                                input_report_abs(dev, spaceorb_axes[i], axes[i] - ((axes[i] & 0x200) ? 1024 : 0));
109
                        for (i = 0; i < 6; i++)
110
                                input_report_key(dev, spaceorb_buttons[i], (data[1] >> i) & 1);
111
                        break;
112
 
113
                case 'K':                               /* Button data */
114
                        if (spaceorb->idx != 5) return;
115
                        for (i = 0; i < 6; i++)
116
                                input_report_key(dev, spaceorb_buttons[i], (data[2] >> i) & 1);
117
 
118
                        break;
119
 
120
                case 'E':                               /* Error packet */
121
                        if (spaceorb->idx != 4) return;
122
                        printk(KERN_ERR "spaceorb: Device error. [ ");
123
                        for (i = 0; i < 7; i++) if (data[1] & (1 << i)) printk("%s ", spaceorb_errors[i]);
124
                        printk("]\n");
125
                        break;
126
        }
127
 
128
        input_sync(dev);
129
}
130
 
131
static irqreturn_t spaceorb_interrupt(struct serio *serio,
132
                unsigned char data, unsigned int flags)
133
{
134
        struct spaceorb* spaceorb = serio_get_drvdata(serio);
135
 
136
        if (~data & 0x80) {
137
                if (spaceorb->idx) spaceorb_process_packet(spaceorb);
138
                spaceorb->idx = 0;
139
        }
140
        if (spaceorb->idx < SPACEORB_MAX_LENGTH)
141
                spaceorb->data[spaceorb->idx++] = data & 0x7f;
142
        return IRQ_HANDLED;
143
}
144
 
145
/*
146
 * spaceorb_disconnect() is the opposite of spaceorb_connect()
147
 */
148
 
149
static void spaceorb_disconnect(struct serio *serio)
150
{
151
        struct spaceorb* spaceorb = serio_get_drvdata(serio);
152
 
153
        serio_close(serio);
154
        serio_set_drvdata(serio, NULL);
155
        input_unregister_device(spaceorb->dev);
156
        kfree(spaceorb);
157
}
158
 
159
/*
160
 * spaceorb_connect() is the routine that is called when someone adds a
161
 * new serio device that supports SpaceOrb/Avenger protocol and registers
162
 * it as an input device.
163
 */
164
 
165
static int spaceorb_connect(struct serio *serio, struct serio_driver *drv)
166
{
167
        struct spaceorb *spaceorb;
168
        struct input_dev *input_dev;
169
        int err = -ENOMEM;
170
        int i;
171
 
172
        spaceorb = kzalloc(sizeof(struct spaceorb), GFP_KERNEL);
173
        input_dev = input_allocate_device();
174
        if (!spaceorb || !input_dev)
175
                goto fail1;
176
 
177
        spaceorb->dev = input_dev;
178
        snprintf(spaceorb->phys, sizeof(spaceorb->phys), "%s/input0", serio->phys);
179
 
180
        input_dev->name = "SpaceTec SpaceOrb 360 / Avenger";
181
        input_dev->phys = spaceorb->phys;
182
        input_dev->id.bustype = BUS_RS232;
183
        input_dev->id.vendor = SERIO_SPACEORB;
184
        input_dev->id.product = 0x0001;
185
        input_dev->id.version = 0x0100;
186
        input_dev->dev.parent = &serio->dev;
187
 
188
        input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
189
 
190
        for (i = 0; i < 6; i++)
191
                set_bit(spaceorb_buttons[i], input_dev->keybit);
192
 
193
        for (i = 0; i < 6; i++)
194
                input_set_abs_params(input_dev, spaceorb_axes[i], -508, 508, 0, 0);
195
 
196
        serio_set_drvdata(serio, spaceorb);
197
 
198
        err = serio_open(serio, drv);
199
        if (err)
200
                goto fail2;
201
 
202
        err = input_register_device(spaceorb->dev);
203
        if (err)
204
                goto fail3;
205
 
206
        return 0;
207
 
208
 fail3: serio_close(serio);
209
 fail2: serio_set_drvdata(serio, NULL);
210
 fail1: input_free_device(input_dev);
211
        kfree(spaceorb);
212
        return err;
213
}
214
 
215
/*
216
 * The serio driver structure.
217
 */
218
 
219
static struct serio_device_id spaceorb_serio_ids[] = {
220
        {
221
                .type   = SERIO_RS232,
222
                .proto  = SERIO_SPACEORB,
223
                .id     = SERIO_ANY,
224
                .extra  = SERIO_ANY,
225
        },
226
        { 0 }
227
};
228
 
229
MODULE_DEVICE_TABLE(serio, spaceorb_serio_ids);
230
 
231
static struct serio_driver spaceorb_drv = {
232
        .driver         = {
233
                .name   = "spaceorb",
234
        },
235
        .description    = DRIVER_DESC,
236
        .id_table       = spaceorb_serio_ids,
237
        .interrupt      = spaceorb_interrupt,
238
        .connect        = spaceorb_connect,
239
        .disconnect     = spaceorb_disconnect,
240
};
241
 
242
/*
243
 * The functions for inserting/removing us as a module.
244
 */
245
 
246
static int __init spaceorb_init(void)
247
{
248
        return serio_register_driver(&spaceorb_drv);
249
}
250
 
251
static void __exit spaceorb_exit(void)
252
{
253
        serio_unregister_driver(&spaceorb_drv);
254
}
255
 
256
module_init(spaceorb_init);
257
module_exit(spaceorb_exit);

powered by: WebSVN 2.1.0

© copyright 1999-2025 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.