summaryrefslogtreecommitdiffstats
path: root/drivers/input/joystick/tmdc.c
blob: 0feeb8acb532a297a819d5713a3aa2bce3490af8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
/*
 * $Id: tmdc.c,v 1.31 2002/01/22 20:29:52 vojtech Exp $
 *
 *  Copyright (c) 1998-2001 Vojtech Pavlik
 *
 *   Based on the work of:
 *	Trystan Larey-Williams
 */

/*
 * ThrustMaster DirectConnect (BSP) joystick family driver for Linux
 */

/*
 * 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 either by
 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
 */

#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/gameport.h>
#include <linux/input.h>
#include <linux/jiffies.h>

#define DRIVER_DESC	"ThrustMaster DirectConnect joystick driver"

MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");

#define TMDC_MAX_START		600	/* 600 us */
#define TMDC_MAX_STROBE		60	/* 60 us */
#define TMDC_MAX_LENGTH		13

#define TMDC_MODE_M3DI		1
#define TMDC_MODE_3DRP		3
#define TMDC_MODE_AT		4
#define TMDC_MODE_FM		8
#define TMDC_MODE_FGP		163

#define TMDC_BYTE_ID		10
#define TMDC_BYTE_REV		11
#define TMDC_BYTE_DEF		12

#define TMDC_ABS		7
#define TMDC_ABS_HAT		4
#define TMDC_BTN		16

static const unsigned char tmdc_byte_a[16] = { 0, 1, 3, 4, 6, 7 };
static const unsigned char tmdc_byte_d[16] = { 2, 5, 8, 9 };

static const signed char tmdc_abs[TMDC_ABS] =
	{ ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE, ABS_RX, ABS_RY, ABS_RZ };
static const signed char tmdc_abs_hat[TMDC_ABS_HAT] =
	{ ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y };
static const signed char tmdc_abs_at[TMDC_ABS] =
	{ ABS_X, ABS_Y, ABS_RUDDER, -1, ABS_THROTTLE };
static const signed char tmdc_abs_fm[TMDC_ABS] =
	{ ABS_RX, ABS_RY, ABS_X, ABS_Y };

static const short tmdc_btn_pad[TMDC_BTN] =
	{ BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_START, BTN_SELECT, BTN_TL, BTN_TR };
static const short tmdc_btn_joy[TMDC_BTN] =
	{ BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_THUMB2, BTN_PINKIE,
	  BTN_BASE3, BTN_BASE4, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z };
static const short tmdc_btn_fm[TMDC_BTN] =
        { BTN_TRIGGER, BTN_C, BTN_B, BTN_A, BTN_THUMB, BTN_X, BTN_Y, BTN_Z, BTN_TOP, BTN_TOP2 };
static const short tmdc_btn_at[TMDC_BTN] =
        { BTN_TRIGGER, BTN_THUMB2, BTN_PINKIE, BTN_THUMB, BTN_BASE6, BTN_BASE5, BTN_BASE4,
          BTN_BASE3, BTN_BASE2, BTN_BASE };

static const struct {
        int x;
        int y;
} tmdc_hat_to_axis[] = {{ 0, 0}, { 1, 0}, { 0,-1}, {-1, 0}, { 0, 1}};

static const struct tmdc_model {
	unsigned char id;
	const char *name;
	char abs;
	char hats;
	char btnc[4];
	char btno[4];
	const signed char *axes;
	const short *buttons;
} tmdc_models[] = {
	{   1, "ThrustMaster Millenium 3D Inceptor",	  6, 2, { 4, 2 }, { 4, 6 }, tmdc_abs, tmdc_btn_joy },
	{   3, "ThrustMaster Rage 3D Gamepad",		  2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
	{   4, "ThrustMaster Attack Throttle",		  5, 2, { 4, 6 }, { 4, 2 }, tmdc_abs_at, tmdc_btn_at },
	{   8, "ThrustMaster FragMaster",		  4, 0, { 8, 2 }, { 0, 0 }, tmdc_abs_fm, tmdc_btn_fm },
	{ 163, "Thrustmaster Fusion GamePad",		  2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
	{   0, "Unknown %d-axis, %d-button TM device %d", 0, 0, { 0, 0 }, { 0, 0 }, tmdc_abs, tmdc_btn_joy }
};


struct tmdc_port {
	struct input_dev *dev;
	char name[64];
	char phys[32];
	int mode;
	const signed char *abs;
	const short *btn;
	unsigned char absc;
	unsigned char btnc[4];
	unsigned char btno[4];
};

struct tmdc {
	struct gameport *gameport;
	struct tmdc_port *port[2];
#if 0
	struct input_dev *dev[2];
	char name[2][64];
	char phys[2][32];
	int mode[2];
	signed char *abs[2];
	short *btn[2];
	unsigned char absc[2];
	unsigned char btnc[2][4];
	unsigned char btno[2][4];
#endif
	int reads;
	int bads;
	unsigned char exists;
};

/*
 * tmdc_read_packet() reads a ThrustMaster packet.
 */

static int tmdc_read_packet(struct gameport *gameport, unsigned char data[2][TMDC_MAX_LENGTH])
{
	unsigned char u, v, w, x;
	unsigned long flags;
	int i[2], j[2], t[2], p, k;

	p = gameport_time(gameport, TMDC_MAX_STROBE);

	for (k = 0; k < 2; k++) {
		t[k] = gameport_time(gameport, TMDC_MAX_START);
		i[k] = j[k] = 0;
	}

	local_irq_save(flags);
	gameport_trigger(gameport);

	w = gameport_read(gameport) >> 4;

	do {
		x = w;
		w = gameport_read(gameport) >> 4;

		for (k = 0, v = w, u = x; k < 2; k++, v >>= 2, u >>= 2) {
			if (~v & u & 2) {
				if (t[k] <= 0 || i[k] >= TMDC_MAX_LENGTH) continue;
				t[k] = p;
				if (j[k] == 0) {				 /* Start bit */
					if (~v & 1) t[k] = 0;
					data[k][i[k]] = 0; j[k]++; continue;
				}
				if (j[k] == 9) {				/* Stop bit */
					if (v & 1) t[k] = 0;
					j[k] = 0; i[k]++; continue;
				}
				data[k][i[k]] |= (~v & 1) << (j[k]++ - 1);	/* Data bit */
			}
			t[k]--;
		}
	} while (t[0] > 0 || t[1] > 0);

	local_irq_restore(flags);

	return (i[0] == TMDC_MAX_LENGTH) | ((i[1] == TMDC_MAX_LENGTH) << 1);
}

static int tmdc_parse_packet(struct tmdc_port *port, unsigned char *data)
{
	int i, k, l;

	if (data[TMDC_BYTE_ID] != port->mode)
		return -1;

	for (i = 0; i < port->absc; i++) {
		if (port->abs[i] < 0)
			return 0;

		input_report_abs(port->dev, port->abs[i], data[tmdc_byte_a[i]]);
	}

	switch (port->mode) {

		case TMDC_MODE_M3DI:

			i = tmdc_byte_d[0];
			input_report_abs(port->dev, ABS_HAT0X, ((data[i] >> 3) & 1) - ((data[i] >> 1) & 1));
			input_report_abs(port->dev, ABS_HAT0Y, ((data[i] >> 2) & 1) - ( data[i]       & 1));
			break;

		case TMDC_MODE_AT:

			i = tmdc_byte_a[3];
			input_report_abs(port->dev, ABS_HAT0X, tmdc_hat_to_axis[(data[i] - 141) / 25].x);
			input_report_abs(port->dev, ABS_HAT0Y, tmdc_hat_to_axis[(data[i] - 141) / 25].y);
			break;

	}

	for (k = l = 0; k < 4; k++) {
		for (i = 0; i < port->btnc[k]; i++)
			input_report_key(port->dev, port->btn[i + l],
				((data[tmdc_byte_d[k]] >> (i + port->btno[k])) & 1));
		l += port->btnc[k];
	}

	input_sync(port->dev);

	return 0;
}

/*
 * tmdc_poll() reads and analyzes ThrustMaster joystick data.
 */

static void tmdc_poll(struct gameport *gameport)
{
	unsigned char data[2][TMDC_MAX_LENGTH];
	struct tmdc *tmdc = gameport_get_drvdata(gameport);
	unsigned char r, bad = 0;
	int i;

	tmdc->reads++;

	if ((r = tmdc_read_packet(tmdc->gameport, data)) != tmdc->exists)
		bad = 1;
	else {
		for (i = 0; i < 2; i++) {
			if (r & (1 << i) & tmdc->exists) {

				if (tmdc_parse_packet(tmdc->port[i], data[i]))
					bad = 1;
			}
		}
	}

	tmdc->bads += bad;
}

static int tmdc_open(struct input_dev *dev)
{
	struct tmdc *tmdc = input_get_drvdata(dev);

	gameport_start_polling(tmdc->gameport);
	return 0;
}

static void tmdc_close(struct input_dev *dev)
{
	struct tmdc *tmdc = input_get_drvdata(dev);

	gameport_stop_polling(tmdc->gameport);
}

static int tmdc_setup_port(struct tmdc *tmdc, int idx, unsigned char *data)
{
	const struct tmdc_model *model;
	struct tmdc_port *port;
	struct input_dev *input_dev;
	int i, j, b = 0;
	int err;

	tmdc->port[idx] = port = kzalloc(sizeof (struct tmdc_port), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!port || !input_dev) {
		err = -ENOMEM;
		goto fail;
	}

	port->mode = data[TMDC_BYTE_ID];

	for (model = tmdc_models; model->id && model->id != port->mode; model++)
		/* empty */;

	port->abs = model->axes;
	port->btn = model->buttons;

	if (!model->id) {
		port->absc = data[TMDC_BYTE_DEF] >> 4;
		for (i = 0; i < 4; i++)
			port->btnc[i] = i < (data[TMDC_BYTE_DEF] & 0xf) ? 8 : 0;
	} else {
		port->absc = model->abs;
		for (i = 0; i < 4; i++)
			port->btnc[i] = model->btnc[i];
	}

	for (i = 0; i < 4; i++)
		port->btno[i] = model->btno[i];

	snprintf(port->name, sizeof(port->name), model->name,
		 port->absc, (data[TMDC_BYTE_DEF] & 0xf) << 3, port->mode);
	snprintf(port->phys, sizeof(port->phys), "%s/input%d", tmdc->gameport->phys, i);

	port->dev = input_dev;

	input_dev->name = port->name;
	input_dev->phys = port->phys;
	input_dev->id.bustype = BUS_GAMEPORT;
	input_dev->id.vendor = GAMEPORT_ID_VENDOR_THRUSTMASTER;
	input_dev->id.product = model->id;
	input_dev->id.version = 0x0100;
	input_dev->dev.parent = &tmdc->gameport->dev;

	input_set_drvdata(input_dev, tmdc);

	input_dev->open = tmdc_open;
	input_dev->close = tmdc_close;

	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);

	for (i = 0; i < port->absc && i < TMDC_ABS; i++)
		if (port->abs[i] >= 0)
			input_set_abs_params(input_dev, port->abs[i], 8, 248, 2, 4);

	for (i = 0; i < model->hats && i < TMDC_ABS_HAT; i++)
		input_set_abs_params(input_dev, tmdc_abs_hat[i], -1, 1, 0, 0);

	for (i = 0; i < 4; i++) {
		for (j = 0; j < port->btnc[i] && j < TMDC_BTN; j++)
			set_bit(port->btn[j + b], input_dev->keybit);
		b += port->btnc[i];
	}

	err = input_register_device(port->dev);
	if (err)
		goto fail;

	return 0;

 fail:	input_free_device(input_dev);
	kfree(port);
	return err;
}

/*
 * tmdc_probe() probes for ThrustMaster type joysticks.
 */

static int tmdc_connect(struct gameport *gameport, struct gameport_driver *drv)
{
	unsigned char data[2][TMDC_MAX_LENGTH];
	struct tmdc *tmdc;
	int i;
	int err;

	if (!(tmdc = kzalloc(sizeof(struct tmdc), GFP_KERNEL)))
		return -ENOMEM;

	tmdc->gameport = gameport;

	gameport_set_drvdata(gameport, tmdc);

	err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
	if (err)
		goto fail1;

	if (!(tmdc->exists = tmdc_read_packet(gameport, data))) {
		err = -ENODEV;
		goto fail2;
	}

	gameport_set_poll_handler(gameport, tmdc_poll);
	gameport_set_poll_interval(gameport, 20);

	for (i = 0; i < 2; i++) {
		if (tmdc->exists & (1 << i)) {

			err = tmdc_setup_port(tmdc, i, data[i]);
			if (err)
				goto fail3;
		}
	}

	return 0;

 fail3: while (--i >= 0) {
		if (tmdc->port[i]) {
			input_unregister_device(tmdc->port[i]->dev);
			kfree(tmdc->port[i]);
		}
	}
 fail2:	gameport_close(gameport);
 fail1:	gameport_set_drvdata(gameport, NULL);
	kfree(tmdc);
	return err;
}

static void tmdc_disconnect(struct gameport *gameport)
{
	struct tmdc *tmdc = gameport_get_drvdata(gameport);
	int i;

	for (i = 0; i < 2; i++) {
		if (tmdc->port[i]) {
			input_unregister_device(tmdc->port[i]->dev);
			kfree(tmdc->port[i]);
		}
	}
	gameport_close(gameport);
	gameport_set_drvdata(gameport, NULL);
	kfree(tmdc);
}

static struct gameport_driver tmdc_drv = {
	.driver		= {
		.name	= "tmdc",
		.owner	= THIS_MODULE,
	},
	.description	= DRIVER_DESC,
	.connect	= tmdc_connect,
	.disconnect	= tmdc_disconnect,
};

static int __init tmdc_init(void)
{
	gameport_register_driver(&tmdc_drv);
	return 0;
}

static void __exit tmdc_exit(void)
{
	gameport_unregister_driver(&tmdc_drv);
}

module_init(tmdc_init);
module_exit(tmdc_exit);
OpenPOWER on IntegriCloud