2 * Copyright (c) 1998-2005 Vojtech Pavlik
6 * Logitech ADI joystick family driver for Linux
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 * Should you need to contact me, the author, you can do so either by
25 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
26 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
29 #include <linux/delay.h>
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/string.h>
33 #include <linux/slab.h>
34 #include <linux/input.h>
35 #include <linux/gameport.h>
36 #include <linux/init.h>
37 #include <linux/jiffies.h>
39 #define DRIVER_DESC "Logitech ADI joystick family driver"
41 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
42 MODULE_DESCRIPTION(DRIVER_DESC);
43 MODULE_LICENSE("GPL");
46 * Times, array sizes, flags, ids.
49 #define ADI_MAX_START 200 /* Trigger to packet timeout [200us] */
50 #define ADI_MAX_STROBE 40 /* Single bit timeout [40us] */
51 #define ADI_INIT_DELAY 10 /* Delay after init packet [10ms] */
52 #define ADI_DATA_DELAY 4 /* Delay after data packet [4ms] */
54 #define ADI_MAX_LENGTH 256
55 #define ADI_MIN_LENGTH 8
56 #define ADI_MIN_LEN_LENGTH 10
57 #define ADI_MIN_ID_LENGTH 66
58 #define ADI_MAX_NAME_LENGTH 64
59 #define ADI_MAX_CNAME_LENGTH 16
60 #define ADI_MAX_PHYS_LENGTH 64
62 #define ADI_FLAG_HAT 0x04
63 #define ADI_FLAG_10BIT 0x08
65 #define ADI_ID_TPD 0x01
66 #define ADI_ID_WGP 0x06
67 #define ADI_ID_WGPE 0x08
68 #define ADI_ID_MAX 0x0a
71 * Names, buttons, axes ...
74 static char *adi_names[] = { "WingMan Extreme Digital", "ThunderPad Digital", "SideCar", "CyberMan 2",
75 "WingMan Interceptor", "WingMan Formula", "WingMan GamePad",
76 "WingMan Extreme Digital 3D", "WingMan GamePad Extreme",
77 "WingMan GamePad USB", "Unknown Device %#x" };
79 static char adi_wmgpe_abs[] = { ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y };
80 static char adi_wmi_abs[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y };
81 static char adi_wmed3d_abs[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RZ, ABS_HAT0X, ABS_HAT0Y };
82 static char adi_cm2_abs[] = { ABS_X, ABS_Y, ABS_Z, ABS_RX, ABS_RY, ABS_RZ };
83 static char adi_wmf_abs[] = { ABS_WHEEL, ABS_GAS, ABS_BRAKE, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y };
85 static short adi_wmgpe_key[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START, BTN_MODE, BTN_SELECT };
86 static short adi_wmi_key[] = { BTN_TRIGGER, BTN_TOP, BTN_THUMB, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4, BTN_EXTRA };
87 static short adi_wmed3d_key[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2 };
88 static short adi_cm2_key[] = { BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8 };
90 static char* adi_abs[] = { adi_wmi_abs, adi_wmgpe_abs, adi_wmf_abs, adi_cm2_abs, adi_wmi_abs, adi_wmf_abs,
91 adi_wmgpe_abs, adi_wmed3d_abs, adi_wmgpe_abs, adi_wmgpe_abs, adi_wmi_abs };
93 static short* adi_key[] = { adi_wmi_key, adi_wmgpe_key, adi_cm2_key, adi_cm2_key, adi_wmi_key, adi_cm2_key,
94 adi_wmgpe_key, adi_wmed3d_key, adi_wmgpe_key, adi_wmgpe_key, adi_wmi_key };
97 * Hat to axis conversion arrays.
103 } adi_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
106 * Per-port information.
110 struct input_dev *dev;
122 char name[ADI_MAX_NAME_LENGTH];
123 char cname[ADI_MAX_CNAME_LENGTH];
124 char phys[ADI_MAX_PHYS_LENGTH];
125 unsigned char data[ADI_MAX_LENGTH];
129 struct gameport *gameport;
136 * adi_read_packet() reads a Logitech ADI packet.
139 static void adi_read_packet(struct adi_port *port)
141 struct adi *adi = port->adi;
142 struct gameport *gameport = port->gameport;
143 unsigned char u, v, w, x, z;
147 for (i = 0; i < 2; i++) {
149 t[i] = gameport_time(gameport, ADI_MAX_START);
153 local_irq_save(flags);
155 gameport_trigger(gameport);
156 v = z = gameport_read(gameport);
160 w = u ^ (v = x = gameport_read(gameport));
161 for (i = 0; i < 2; i++, w >>= 2, x >>= 2) {
163 if ((w & 0x30) && s[i]) {
164 if ((w & 0x30) < 0x30 && adi[i].ret < ADI_MAX_LENGTH && t[i] > 0) {
165 adi[i].data[++adi[i].ret] = w;
166 t[i] = gameport_time(gameport, ADI_MAX_STROBE);
168 } else if (!(x & 0x30)) s[i] = 1;
170 } while (t[0] > 0 || t[1] > 0);
172 local_irq_restore(flags);
178 * adi_move_bits() detects a possible 2-stream mode, and moves
179 * the bits accordingly.
182 static void adi_move_bits(struct adi_port *port, int length)
185 struct adi *adi = port->adi;
187 adi[0].idx = adi[1].idx = 0;
189 if (adi[0].ret <= 0 || adi[1].ret <= 0) return;
190 if (adi[0].data[0] & 0x20 || ~adi[1].data[0] & 0x20) return;
192 for (i = 1; i <= adi[1].ret; i++)
193 adi[0].data[((length - 1) >> 1) + i + 1] = adi[1].data[i];
195 adi[0].ret += adi[1].ret;
200 * adi_get_bits() gathers bits from the data packet.
203 static inline int adi_get_bits(struct adi *adi, int count)
207 if ((adi->idx += count) > adi->ret) return 0;
208 for (i = 0; i < count; i++)
209 bits |= ((adi->data[adi->idx - i] >> 5) & 1) << i;
214 * adi_decode() decodes Logitech joystick data into input events.
217 static int adi_decode(struct adi *adi)
219 struct input_dev *dev = adi->dev;
220 char *abs = adi->abs;
221 short *key = adi->key;
224 if (adi->ret < adi->length || adi->id != (adi_get_bits(adi, 4) | (adi_get_bits(adi, 4) << 4)))
227 for (i = 0; i < adi->axes10; i++)
228 input_report_abs(dev, *abs++, adi_get_bits(adi, 10));
230 for (i = 0; i < adi->axes8; i++)
231 input_report_abs(dev, *abs++, adi_get_bits(adi, 8));
233 for (i = 0; i < adi->buttons && i < 63; i++) {
235 t = adi_get_bits(adi, 4);
236 input_report_abs(dev, *abs++, ((t >> 2) & 1) - ( t & 1));
237 input_report_abs(dev, *abs++, ((t >> 1) & 1) - ((t >> 3) & 1));
239 input_report_key(dev, *key++, adi_get_bits(adi, 1));
242 for (i = 0; i < adi->hats; i++) {
243 if ((t = adi_get_bits(adi, 4)) > 8) t = 0;
244 input_report_abs(dev, *abs++, adi_hat_to_axis[t].x);
245 input_report_abs(dev, *abs++, adi_hat_to_axis[t].y);
248 for (i = 63; i < adi->buttons; i++)
249 input_report_key(dev, *key++, adi_get_bits(adi, 1));
257 * adi_read() reads the data packet and decodes it.
260 static int adi_read(struct adi_port *port)
265 adi_read_packet(port);
266 adi_move_bits(port, port->adi[0].length);
268 for (i = 0; i < 2; i++)
269 if (port->adi[i].length)
270 result |= adi_decode(port->adi + i);
276 * adi_poll() repeatedly polls the Logitech joysticks.
279 static void adi_poll(struct gameport *gameport)
281 struct adi_port *port = gameport_get_drvdata(gameport);
283 port->bad -= adi_read(port);
288 * adi_open() is a callback from the input open routine.
291 static int adi_open(struct input_dev *dev)
293 struct adi_port *port = input_get_drvdata(dev);
295 gameport_start_polling(port->gameport);
300 * adi_close() is a callback from the input close routine.
303 static void adi_close(struct input_dev *dev)
305 struct adi_port *port = input_get_drvdata(dev);
307 gameport_stop_polling(port->gameport);
311 * adi_init_digital() sends a trigger & delay sequence
312 * to reset and initialize a Logitech joystick into digital mode.
315 static void adi_init_digital(struct gameport *gameport)
317 int seq[] = { 4, -2, -3, 10, -6, -11, -7, -9, 11, 0 };
320 for (i = 0; seq[i]; i++) {
321 gameport_trigger(gameport);
326 udelay(-seq[i]*14); /* It looks like mdelay() is off by approx 1.4% */
331 static void adi_id_decode(struct adi *adi, struct adi_port *port)
335 if (adi->ret < ADI_MIN_ID_LENGTH) /* Minimum ID packet length */
338 if (adi->ret < (t = adi_get_bits(adi, 10))) {
339 printk(KERN_WARNING "adi: Short ID packet: reported: %d != read: %d\n", t, adi->ret);
343 adi->id = adi_get_bits(adi, 4) | (adi_get_bits(adi, 4) << 4);
345 if ((t = adi_get_bits(adi, 4)) & ADI_FLAG_HAT) adi->hats++;
347 adi->length = adi_get_bits(adi, 10);
349 if (adi->length >= ADI_MAX_LENGTH || adi->length < ADI_MIN_LENGTH) {
350 printk(KERN_WARNING "adi: Bad data packet length (%d).\n", adi->length);
355 adi->axes8 = adi_get_bits(adi, 4);
356 adi->buttons = adi_get_bits(adi, 6);
358 if (adi_get_bits(adi, 6) != 8 && adi->hats) {
359 printk(KERN_WARNING "adi: Other than 8-dir POVs not supported yet.\n");
364 adi->buttons += adi_get_bits(adi, 6);
365 adi->hats += adi_get_bits(adi, 4);
367 i = adi_get_bits(adi, 4);
369 if (t & ADI_FLAG_10BIT) {
370 adi->axes10 = adi->axes8 - i;
374 t = adi_get_bits(adi, 4);
376 for (i = 0; i < t; i++)
377 adi->cname[i] = adi_get_bits(adi, 8);
380 t = 8 + adi->buttons + adi->axes10 * 10 + adi->axes8 * 8 + adi->hats * 4;
381 if (adi->length != t && adi->length != t + (t & 1)) {
382 printk(KERN_WARNING "adi: Expected length %d != data length %d\n", t, adi->length);
402 static int adi_init_input(struct adi *adi, struct adi_port *port, int half)
404 struct input_dev *input_dev;
405 char buf[ADI_MAX_NAME_LENGTH];
408 adi->dev = input_dev = input_allocate_device();
412 t = adi->id < ADI_ID_MAX ? adi->id : ADI_ID_MAX;
414 snprintf(buf, ADI_MAX_PHYS_LENGTH, adi_names[t], adi->id);
415 snprintf(adi->name, ADI_MAX_NAME_LENGTH, "Logitech %s [%s]", buf, adi->cname);
416 snprintf(adi->phys, ADI_MAX_PHYS_LENGTH, "%s/input%d", port->gameport->phys, half);
418 adi->abs = adi_abs[t];
419 adi->key = adi_key[t];
421 input_dev->name = adi->name;
422 input_dev->phys = adi->phys;
423 input_dev->id.bustype = BUS_GAMEPORT;
424 input_dev->id.vendor = GAMEPORT_ID_VENDOR_LOGITECH;
425 input_dev->id.product = adi->id;
426 input_dev->id.version = 0x0100;
427 input_dev->dev.parent = &port->gameport->dev;
429 input_set_drvdata(input_dev, port);
431 input_dev->open = adi_open;
432 input_dev->close = adi_close;
434 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
436 for (i = 0; i < adi->axes10 + adi->axes8 + (adi->hats + (adi->pad != -1)) * 2; i++)
437 set_bit(adi->abs[i], input_dev->absbit);
439 for (i = 0; i < adi->buttons; i++)
440 set_bit(adi->key[i], input_dev->keybit);
445 static void adi_init_center(struct adi *adi)
452 for (i = 0; i < adi->axes10 + adi->axes8 + (adi->hats + (adi->pad != -1)) * 2; i++) {
455 x = adi->dev->abs[t];
457 if (t == ABS_THROTTLE || t == ABS_RUDDER || adi->id == ADI_ID_WGPE)
458 x = i < adi->axes10 ? 512 : 128;
461 input_set_abs_params(adi->dev, t, 64, x * 2 - 64, 2, 16);
462 else if (i < adi->axes10 + adi->axes8)
463 input_set_abs_params(adi->dev, t, 48, x * 2 - 48, 1, 16);
465 input_set_abs_params(adi->dev, t, -1, 1, 0, 0);
470 * adi_connect() probes for Logitech ADI joysticks.
473 static int adi_connect(struct gameport *gameport, struct gameport_driver *drv)
475 struct adi_port *port;
479 port = kzalloc(sizeof(struct adi_port), GFP_KERNEL);
483 port->gameport = gameport;
485 gameport_set_drvdata(gameport, port);
487 err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
491 adi_init_digital(gameport);
492 adi_read_packet(port);
494 if (port->adi[0].ret >= ADI_MIN_LEN_LENGTH)
495 adi_move_bits(port, adi_get_bits(port->adi, 10));
497 for (i = 0; i < 2; i++) {
498 adi_id_decode(port->adi + i, port);
500 if (!port->adi[i].length)
503 err = adi_init_input(port->adi + i, port, i);
508 if (!port->adi[0].length && !port->adi[1].length) {
513 gameport_set_poll_handler(gameport, adi_poll);
514 gameport_set_poll_interval(gameport, 20);
516 msleep(ADI_INIT_DELAY);
517 if (adi_read(port)) {
518 msleep(ADI_DATA_DELAY);
522 for (i = 0; i < 2; i++)
523 if (port->adi[i].length > 0) {
524 adi_init_center(port->adi + i);
525 err = input_register_device(port->adi[i].dev);
532 fail3: while (--i >= 0) {
533 if (port->adi[i].length > 0) {
534 input_unregister_device(port->adi[i].dev);
535 port->adi[i].dev = NULL;
538 fail2: for (i = 0; i < 2; i++)
539 if (port->adi[i].dev)
540 input_free_device(port->adi[i].dev);
541 gameport_close(gameport);
542 fail1: gameport_set_drvdata(gameport, NULL);
547 static void adi_disconnect(struct gameport *gameport)
550 struct adi_port *port = gameport_get_drvdata(gameport);
552 for (i = 0; i < 2; i++)
553 if (port->adi[i].length > 0)
554 input_unregister_device(port->adi[i].dev);
555 gameport_close(gameport);
556 gameport_set_drvdata(gameport, NULL);
561 * The gameport device structure.
564 static struct gameport_driver adi_drv = {
568 .description = DRIVER_DESC,
569 .connect = adi_connect,
570 .disconnect = adi_disconnect,
573 static int __init adi_init(void)
575 gameport_register_driver(&adi_drv);
579 static void __exit adi_exit(void)
581 gameport_unregister_driver(&adi_drv);
584 module_init(adi_init);
585 module_exit(adi_exit);