aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/input/joystick/a3d.c
blob: 55efdfc7eb625bbca7a5d64af5eb34ce1eb49e2c (plain) (blame)
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
/*
 *  Copyright (c) 1998-2001 Vojtech Pavlik
 */

/*
 * FP-Gaming Assassin 3D joystick 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/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/gameport.h>
#include <linux/input.h>
#include <linux/jiffies.h>

#define DRIVER_DESC	"FP-Gaming Assassin 3D joystick driver"

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

#define A3D_MAX_START		600	/* 600 us */
#define A3D_MAX_STROBE		80	/* 80 us */
#define A3D_MAX_LENGTH		40	/* 40*3 bits */

#define A3D_MODE_A3D		1	/* Assassin 3D */
#define A3D_MODE_PAN		2	/* Panther */
#define A3D_MODE_OEM		3	/* Panther OEM version */
#define A3D_MODE_PXL		4	/* Panther XL */

static char *a3d_names[] = { NULL, "FP-Gaming Assassin 3D", "MadCatz Panther", "OEM Panther",
			"MadCatz Panther XL", "MadCatz Panther XL w/ rudder" };

struct a3d {
	struct gameport *gameport;
	struct gameport *adc;
	struct input_dev *dev;
	int axes[4];
	int buttons;
	int mode;
	int length;
	int reads;
	int bads;
	char phys[32];
};

/*
 * a3d_read_packet() reads an Assassin 3D packet.
 */

static int a3d_read_packet(struct gameport *gameport, int length, char *data)
{
	unsigned long flags;
	unsigned char u, v;
	unsigned int t, s;
	int i;

	i = 0;
	t = gameport_time(gameport, A3D_MAX_START);
	s = gameport_time(gameport, A3D_MAX_STROBE);

	local_irq_save(flags);
	gameport_trigger(gameport);
	v = gameport_read(gameport);

	while (t > 0 && i < length) {
		t--;
		u = v; v = gameport_read(gameport);
		if (~v & u & 0x10) {
			data[i++] = v >> 5;
			t = s;
		}
	}

	local_irq_restore(flags);

	return i;
}

/*
 * a3d_csum() computes checksum of triplet packet
 */

static int a3d_csum(char *data, int count)
{
	int i, csum = 0;

	for (i = 0; i < count - 2; i++)
		csum += data[i];
	return (csum & 0x3f) != ((data[count - 2] << 3) | data[count - 1]);
}

static void a3d_read(struct a3d *a3d, unsigned char *data)
{
	struct input_dev *dev = a3d->dev;

	switch (a3d->mode) {

		case A3D_MODE_A3D:
		case A3D_MODE_OEM:
		case A3D_MODE_PAN:

			input_report_rel(dev, REL_X, ((data[5] << 6) | (data[6] << 3) | data[ 7]) - ((data[5] & 4) << 7));
			input_report_rel(dev, REL_Y, ((data[8] << 6) | (data[9] << 3) | data[10]) - ((data[8] & 4) << 7));

			input_report_key(dev, BTN_RIGHT,  data[2] & 1);
			input_report_key(dev, BTN_LEFT,   data[3] & 2);
			input_report_key(dev, BTN_MIDDLE, data[3] & 4);

			input_sync(dev);

			a3d->axes[0] = ((signed char)((data[11] << 6) | (data[12] << 3) | (data[13]))) + 128;
			a3d->axes[1] = ((signed char)((data[14] << 6) | (data[15] << 3) | (data[16]))) + 128;
			a3d->axes[2] = ((signed char)((data[17] << 6) | (data[18] << 3) | (data[19]))) + 128;
			a3d->axes[3] = ((signed char)((data[20] << 6) | (data[21] << 3) | (data[22]))) + 128;

			a3d->buttons = ((data[3] << 3) | data[4]) & 0xf;

			break;

		case A3D_MODE_PXL:

			input_report_rel(dev, REL_X, ((data[ 9] << 6) | (data[10] << 3) | data[11]) - ((data[ 9] & 4) << 7));
			input_report_rel(dev, REL_Y, ((data[12] << 6) | (data[13] << 3) | data[14]) - ((data[12] & 4) << 7));

			input_report_key(dev, BTN_RIGHT,  data[2] & 1);
			input_report_key(dev, BTN_LEFT,   data[3] & 2);
			input_report_key(dev, BTN_MIDDLE, data[3] & 4);
			input_report_key(dev, BTN_SIDE,   data[7] & 2);
			input_report_key(dev, BTN_EXTRA,  data[7] & 4);

			input_report_abs(dev, ABS_X,        ((signed char)((data[15] << 6) | (data[16] << 3) | (data[17]))) + 128);
			input_report_abs(dev, ABS_Y,        ((signed char)((data[18] << 6) | (data[19] << 3) | (data[20]))) + 128);
			input_report_abs(dev, ABS_RUDDER,   ((signed char)((data[21] << 6) | (data[22] << 3) | (data[23]))) + 128);
			input_report_abs(dev, ABS_THROTTLE, ((signed char)((data[24] << 6) | (data[25] << 3) | (data[26]))) + 128);

			input_report_abs(dev, ABS_HAT0X, ( data[5]       & 1) - ((data[5] >> 2) & 1));
			input_report_abs(dev, ABS_HAT0Y, ((data[5] >> 1) & 1) - ((data[6] >> 2) & 1));
			input_report_abs(dev, ABS_HAT1X, ((data[4] >> 1) & 1) - ( data[3]       & 1));
			input_report_abs(dev, ABS_HAT1Y, ((data[4] >> 2) & 1) - ( data[4]       & 1));

			input_report_key(dev, BTN_TRIGGER, data[8] & 1);
			input_report_key(dev, BTN_THUMB,   data[8] & 2);
			input_report_key(dev, BTN_TOP,     data[8] & 4);
			input_report_key(dev, BTN_PINKIE,  data[7] & 1);

			input_sync(dev);

			break;
	}
}


/*
 * a3d_poll() reads and analyzes A3D joystick data.
 */

static void a3d_poll(struct gameport *gameport)
{
	struct a3d *a3d = gameport_get_drvdata(gameport);
	unsigned char data[A3D_MAX_LENGTH];

	a3d->reads++;
	if (a3d_read_packet(a3d->gameport, a3d->length, data) != a3d->length ||
	    data[0] != a3d->mode || a3d_csum(data, a3d->length))
		a3d->bads++;
	else
		a3d_read(a3d, data);
}

/*
 * a3d_adc_cooked_read() copies the acis and button data to the
 * callers arrays. It could do the read itself, but the caller could
 * call this more than 50 times a second, which would use too much CPU.
 */

static int a3d_adc_cooked_read(struct gameport *gameport, int *axes, int *buttons)
{
	struct a3d *a3d = gameport->port_data;
	int i;

	for (i = 0; i < 4; i++)
		axes[i] = (a3d->axes[i] < 254) ? a3d->axes[i] : -1;
	*buttons = a3d->buttons;
	return 0;
}

/*
 * a3d_adc_open() is the gameport open routine. It refuses to serve
 * any but cooked data.
 */

static int a3d_adc_open(struct gameport *gameport, int mode)
{
	struct a3d *a3d = gameport->port_data;

	if (mode != GAMEPORT_MODE_COOKED)
		return -1;

	gameport_start_polling(a3d->gameport);
	return 0;
}

/*
 * a3d_adc_close() is a callback from the input close routine.
 */

static void a3d_adc_close(struct gameport *gameport)
{
	struct a3d *a3d = gameport->port_data;

	gameport_stop_polling(a3d->gameport);
}

/*
 * a3d_open() is a callback from the input open routine.
 */

static int a3d_open(struct input_dev *dev)
{
	struct a3d *a3d = input_get_drvdata(dev);

	gameport_start_polling(a3d->gameport);
	return 0;
}

/*
 * a3d_close() is a callback from the input close routine.
 */

static void a3d_close(struct input_dev *dev)
{
	struct a3d *a3d = input_get_drvdata(dev);

	gameport_stop_polling(a3d->gameport);
}

/*
 * a3d_connect() probes for A3D joysticks.
 */

static int a3d_connect(struct gameport *gameport, struct gameport_driver *drv)
{
	struct a3d *a3d;
	struct input_dev *input_dev;
	struct gameport *adc;
	unsigned char data[A3D_MAX_LENGTH];
	int i;
	int err;

	a3d = kzalloc(sizeof(struct a3d), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!a3d || !input_dev) {
		err = -ENOMEM;
		goto fail1;
	}

	a3d->dev = input_dev;
	a3d->gameport = gameport;

	gameport_set_drvdata(gameport, a3d);

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

	i = a3d_read_packet(gameport, A3D_MAX_LENGTH, data);

	if (!i || a3d_csum(data, i)) {
		err = -ENODEV;
		goto fail2;
	}

	a3d->mode = data[0];

	if (!a3d->mode || a3d->mode > 5) {
		printk(KERN_WARNING "a3d.c: Unknown A3D device detected "
			"(%s, id=%d), contact <vojtech@ucw.cz>\n", gameport->phys, a3d->mode);
		err = -ENODEV;
		goto fail2;
	}

	gameport_set_poll_handler(gameport, a3d_poll);
	gameport_set_poll_interval(gameport, 20);

	snprintf(a3d->phys, sizeof(a3d->phys), "%s/input0", gameport->phys);

	input_dev->name = a3d_names[a3d->mode];
	input_dev->phys = a3d->phys;
	input_dev->id.bustype = BUS_GAMEPORT;
	input_dev->id.vendor = GAMEPORT_ID_VENDOR_MADCATZ;
	input_dev->id.product = a3d->mode;
	input_dev->id.version = 0x0100;
	input_dev->dev.parent = &gameport->dev;
	input_dev->open = a3d_open;
	input_dev->close = a3d_close;

	input_set_drvdata(input_dev, a3d);

	if (a3d->mode == A3D_MODE_PXL) {

		int axes[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RUDDER };

		a3d->length = 33;

		input_dev->evbit[0] |= BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY) |
			BIT_MASK(EV_REL);
		input_dev->relbit[0] |= BIT_MASK(REL_X) | BIT_MASK(REL_Y);
		input_dev->absbit[0] |= BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
			BIT_MASK(ABS_THROTTLE) | BIT_MASK(ABS_RUDDER) |
			BIT_MASK(ABS_HAT0X) | BIT_MASK(ABS_HAT0Y) |
			BIT_MASK(ABS_HAT1X) | BIT_MASK(ABS_HAT1Y);
		input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_RIGHT) |
			BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) |
			BIT_MASK(BTN_SIDE) | BIT_MASK(BTN_EXTRA);
		input_dev->keybit[BIT_WORD(BTN_JOYSTICK)] |=
			BIT_MASK(BTN_TRIGGER) | BIT_MASK(BTN_THUMB) |
			BIT_MASK(BTN_TOP) | BIT_MASK(BTN_PINKIE);

		a3d_read(a3d, data);

		for (i = 0; i < 4; i++) {
			if (i < 2)
				input_set_abs_params(input_dev, axes[i],
					48, input_abs_get_val(input_dev, axes[i]) * 2 - 48, 0, 8);
			else
				input_set_abs_params(input_dev, axes[i], 2, 253, 0, 0);
			input_set_abs_params(input_dev, ABS_HAT0X + i, -1, 1, 0, 0);
		}

	} else {
		a3d->length = 29;

		input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
		input_dev->relbit[0] |= BIT_MASK(REL_X) | BIT_MASK(REL_Y);
		input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_RIGHT) |
			BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE);

		a3d_read(a3d, data);

		if (!(a3d->adc = adc = gameport_allocate_port()))
			printk(KERN_ERR "a3d: Not enough memory for ADC port\n");
		else {
			adc->port_data = a3d;
			adc->open = a3d_adc_open;
			adc->close = a3d_adc_close;
			adc->cooked_read = a3d_adc_cooked_read;
			adc->fuzz = 1;

			gameport_set_name(adc, a3d_names[a3d->mode]);
			gameport_set_phys(adc, "%s/gameport0", gameport->phys);
			adc->dev.parent = &gameport->dev;

			gameport_register_port(adc);
		}
	}

	err = input_register_device(a3d->dev);
	if (err)
		goto fail3;

	return 0;

 fail3:	if (a3d->adc)
		gameport_unregister_port(a3d->adc);
 fail2:	gameport_close(gameport);
 fail1:	gameport_set_drvdata(gameport, NULL);
	input_free_device(input_dev);
	kfree(a3d);
	return err;
}

static void a3d_disconnect(struct gameport *gameport)
{
	struct a3d *a3d = gameport_get_drvdata(gameport);

	input_unregister_device(a3d->dev);
	if (a3d->adc)
		gameport_unregister_port(a3d->adc);
	gameport_close(gameport);
	gameport_set_drvdata(gameport, NULL);
	kfree(a3d);
}

static struct gameport_driver a3d_drv = {
	.driver		= {
		.name	= "adc",
		.owner	= THIS_MODULE,
	},
	.description	= DRIVER_DESC,
	.connect	= a3d_connect,
	.disconnect	= a3d_disconnect,
};

module_gameport_driver(a3d_drv);