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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [input/] [joystick/] [interact.c] - Blame information for rev 65

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1 62 marcus.erl
/*
2
 * $Id: interact.c,v 1.16 2002/01/22 20:28:25 vojtech Exp $
3
 *
4
 *  Copyright (c) 2001 Vojtech Pavlik
5
 *
6
 *  Based on the work of:
7
 *      Toby Deshane
8
 */
9
 
10
/*
11
 * InterAct digital gamepad/joystick 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/delay.h>
38
#include <linux/init.h>
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#include <linux/gameport.h>
40
#include <linux/input.h>
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#include <linux/jiffies.h>
42
 
43
#define DRIVER_DESC     "InterAct digital joystick driver"
44
 
45
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
48
 
49
#define INTERACT_MAX_START      600     /* 400 us */
50
#define INTERACT_MAX_STROBE     60      /* 40 us */
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#define INTERACT_MAX_LENGTH     32      /* 32 bits */
52
 
53
#define INTERACT_TYPE_HHFX      0        /* HammerHead/FX */
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#define INTERACT_TYPE_PP8D      1       /* ProPad 8 */
55
 
56
struct interact {
57
        struct gameport *gameport;
58
        struct input_dev *dev;
59
        int bads;
60
        int reads;
61
        unsigned char type;
62
        unsigned char length;
63
        char phys[32];
64
};
65
 
66
static short interact_abs_hhfx[] =
67
        { ABS_RX, ABS_RY, ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y, -1 };
68
static short interact_abs_pp8d[] =
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        { ABS_X, ABS_Y, -1 };
70
 
71
static short interact_btn_hhfx[] =
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        { BTN_TR, BTN_X, BTN_Y, BTN_Z, BTN_A, BTN_B, BTN_C, BTN_TL, BTN_TL2, BTN_TR2, BTN_MODE, BTN_SELECT, -1 };
73
static short interact_btn_pp8d[] =
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        { BTN_C, BTN_TL, BTN_TR, BTN_A, BTN_B, BTN_Y, BTN_Z, BTN_X, -1 };
75
 
76
struct interact_type {
77
        int id;
78
        short *abs;
79
        short *btn;
80
        char *name;
81
        unsigned char length;
82
        unsigned char b8;
83
};
84
 
85
static struct interact_type interact_type[] = {
86
        { 0x6202, interact_abs_hhfx, interact_btn_hhfx, "InterAct HammerHead/FX",    32, 4 },
87
        { 0x53f8, interact_abs_pp8d, interact_btn_pp8d, "InterAct ProPad 8 Digital", 16, 0 },
88
        { 0 }};
89
 
90
/*
91
 * interact_read_packet() reads and InterAct joystick data.
92
 */
93
 
94
static int interact_read_packet(struct gameport *gameport, int length, u32 *data)
95
{
96
        unsigned long flags;
97
        unsigned char u, v;
98
        unsigned int t, s;
99
        int i;
100
 
101
        i = 0;
102
        data[0] = data[1] = data[2] = 0;
103
        t = gameport_time(gameport, INTERACT_MAX_START);
104
        s = gameport_time(gameport, INTERACT_MAX_STROBE);
105
 
106
        local_irq_save(flags);
107
        gameport_trigger(gameport);
108
        v = gameport_read(gameport);
109
 
110
        while (t > 0 && i < length) {
111
                t--;
112
                u = v; v = gameport_read(gameport);
113
                if (v & ~u & 0x40) {
114
                        data[0] = (data[0] << 1) | ((v >> 4) & 1);
115
                        data[1] = (data[1] << 1) | ((v >> 5) & 1);
116
                        data[2] = (data[2] << 1) | ((v >> 7) & 1);
117
                        i++;
118
                        t = s;
119
                }
120
        }
121
 
122
        local_irq_restore(flags);
123
 
124
        return i;
125
}
126
 
127
/*
128
 * interact_poll() reads and analyzes InterAct joystick data.
129
 */
130
 
131
static void interact_poll(struct gameport *gameport)
132
{
133
        struct interact *interact = gameport_get_drvdata(gameport);
134
        struct input_dev *dev = interact->dev;
135
        u32 data[3];
136
        int i;
137
 
138
        interact->reads++;
139
 
140
        if (interact_read_packet(interact->gameport, interact->length, data) < interact->length) {
141
                interact->bads++;
142
        } else {
143
 
144
                for (i = 0; i < 3; i++)
145
                        data[i] <<= INTERACT_MAX_LENGTH - interact->length;
146
 
147
                switch (interact->type) {
148
 
149
                        case INTERACT_TYPE_HHFX:
150
 
151
                                for (i = 0; i < 4; i++)
152
                                        input_report_abs(dev, interact_abs_hhfx[i], (data[i & 1] >> ((i >> 1) << 3)) & 0xff);
153
 
154
                                for (i = 0; i < 2; i++)
155
                                        input_report_abs(dev, ABS_HAT0Y - i,
156
                                                ((data[1] >> ((i << 1) + 17)) & 1)  - ((data[1] >> ((i << 1) + 16)) & 1));
157
 
158
                                for (i = 0; i < 8; i++)
159
                                        input_report_key(dev, interact_btn_hhfx[i], (data[0] >> (i + 16)) & 1);
160
 
161
                                for (i = 0; i < 4; i++)
162
                                        input_report_key(dev, interact_btn_hhfx[i + 8], (data[1] >> (i + 20)) & 1);
163
 
164
                                break;
165
 
166
                        case INTERACT_TYPE_PP8D:
167
 
168
                                for (i = 0; i < 2; i++)
169
                                        input_report_abs(dev, interact_abs_pp8d[i],
170
                                                ((data[0] >> ((i << 1) + 20)) & 1)  - ((data[0] >> ((i << 1) + 21)) & 1));
171
 
172
                                for (i = 0; i < 8; i++)
173
                                        input_report_key(dev, interact_btn_pp8d[i], (data[1] >> (i + 16)) & 1);
174
 
175
                                break;
176
                }
177
        }
178
 
179
        input_sync(dev);
180
}
181
 
182
/*
183
 * interact_open() is a callback from the input open routine.
184
 */
185
 
186
static int interact_open(struct input_dev *dev)
187
{
188
        struct interact *interact = input_get_drvdata(dev);
189
 
190
        gameport_start_polling(interact->gameport);
191
        return 0;
192
}
193
 
194
/*
195
 * interact_close() is a callback from the input close routine.
196
 */
197
 
198
static void interact_close(struct input_dev *dev)
199
{
200
        struct interact *interact = input_get_drvdata(dev);
201
 
202
        gameport_stop_polling(interact->gameport);
203
}
204
 
205
/*
206
 * interact_connect() probes for InterAct joysticks.
207
 */
208
 
209
static int interact_connect(struct gameport *gameport, struct gameport_driver *drv)
210
{
211
        struct interact *interact;
212
        struct input_dev *input_dev;
213
        __u32 data[3];
214
        int i, t;
215
        int err;
216
 
217
        interact = kzalloc(sizeof(struct interact), GFP_KERNEL);
218
        input_dev = input_allocate_device();
219
        if (!interact || !input_dev) {
220
                err = -ENOMEM;
221
                goto fail1;
222
        }
223
 
224
        interact->gameport = gameport;
225
        interact->dev = input_dev;
226
 
227
        gameport_set_drvdata(gameport, interact);
228
 
229
        err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
230
        if (err)
231
                goto fail1;
232
 
233
        i = interact_read_packet(gameport, INTERACT_MAX_LENGTH * 2, data);
234
 
235
        if (i != 32 || (data[0] >> 24) != 0x0c || (data[1] >> 24) != 0x02) {
236
                err = -ENODEV;
237
                goto fail2;
238
        }
239
 
240
        for (i = 0; interact_type[i].length; i++)
241
                if (interact_type[i].id == (data[2] >> 16))
242
                        break;
243
 
244
        if (!interact_type[i].length) {
245
                printk(KERN_WARNING "interact.c: Unknown joystick on %s. [len %d d0 %08x d1 %08x i2 %08x]\n",
246
                        gameport->phys, i, data[0], data[1], data[2]);
247
                err = -ENODEV;
248
                goto fail2;
249
        }
250
 
251
        gameport_set_poll_handler(gameport, interact_poll);
252
        gameport_set_poll_interval(gameport, 20);
253
 
254
        snprintf(interact->phys, sizeof(interact->phys), "%s/input0", gameport->phys);
255
 
256
        interact->type = i;
257
        interact->length = interact_type[i].length;
258
 
259
        input_dev->name = interact_type[i].name;
260
        input_dev->phys = interact->phys;
261
        input_dev->id.bustype = BUS_GAMEPORT;
262
        input_dev->id.vendor = GAMEPORT_ID_VENDOR_INTERACT;
263
        input_dev->id.product = interact_type[i].id;
264
        input_dev->id.version = 0x0100;
265
        input_dev->dev.parent = &gameport->dev;
266
 
267
        input_set_drvdata(input_dev, interact);
268
 
269
        input_dev->open = interact_open;
270
        input_dev->close = interact_close;
271
 
272
        input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
273
 
274
        for (i = 0; (t = interact_type[interact->type].abs[i]) >= 0; i++) {
275
                set_bit(t, input_dev->absbit);
276
                if (i < interact_type[interact->type].b8) {
277
                        input_dev->absmin[t] = 0;
278
                        input_dev->absmax[t] = 255;
279
                } else {
280
                        input_dev->absmin[t] = -1;
281
                        input_dev->absmax[t] = 1;
282
                }
283
        }
284
 
285
        for (i = 0; (t = interact_type[interact->type].btn[i]) >= 0; i++)
286
                set_bit(t, input_dev->keybit);
287
 
288
        err = input_register_device(interact->dev);
289
        if (err)
290
                goto fail2;
291
 
292
        return 0;
293
 
294
fail2:  gameport_close(gameport);
295
fail1:  gameport_set_drvdata(gameport, NULL);
296
        input_free_device(input_dev);
297
        kfree(interact);
298
        return err;
299
}
300
 
301
static void interact_disconnect(struct gameport *gameport)
302
{
303
        struct interact *interact = gameport_get_drvdata(gameport);
304
 
305
        input_unregister_device(interact->dev);
306
        gameport_close(gameport);
307
        gameport_set_drvdata(gameport, NULL);
308
        kfree(interact);
309
}
310
 
311
static struct gameport_driver interact_drv = {
312
        .driver         = {
313
                .name   = "interact",
314
        },
315
        .description    = DRIVER_DESC,
316
        .connect        = interact_connect,
317
        .disconnect     = interact_disconnect,
318
};
319
 
320
static int __init interact_init(void)
321
{
322
        gameport_register_driver(&interact_drv);
323
        return 0;
324
}
325
 
326
static void __exit interact_exit(void)
327
{
328
        gameport_unregister_driver(&interact_drv);
329
}
330
 
331
module_init(interact_init);
332
module_exit(interact_exit);

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