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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) 1998-2001 Vojtech Pavlik
4 *
5 * Based on the work of:
6 * Trystan Larey-Williams
7 */
8
9/*
10 * ThrustMaster DirectConnect (BSP) joystick family driver for Linux
11 */
12
13#include <linux/delay.h>
14#include <linux/kernel.h>
15#include <linux/slab.h>
16#include <linux/module.h>
17#include <linux/gameport.h>
18#include <linux/input.h>
19#include <linux/jiffies.h>
20
21#define DRIVER_DESC "ThrustMaster DirectConnect joystick driver"
22
23MODULE_AUTHOR("Vojtech Pavlik <[email protected]>");
24MODULE_DESCRIPTION(DRIVER_DESC);
25MODULE_LICENSE("GPL");
26
27#define TMDC_MAX_START 600 /* 600 us */
28#define TMDC_MAX_STROBE 60 /* 60 us */
29#define TMDC_MAX_LENGTH 13
30
31#define TMDC_MODE_M3DI 1
32#define TMDC_MODE_3DRP 3
33#define TMDC_MODE_AT 4
34#define TMDC_MODE_FM 8
35#define TMDC_MODE_FGP 163
36
37#define TMDC_BYTE_ID 10
38#define TMDC_BYTE_REV 11
39#define TMDC_BYTE_DEF 12
40
41#define TMDC_ABS 7
42#define TMDC_ABS_HAT 4
43#define TMDC_BTN 16
44
45static const unsigned char tmdc_byte_a[16] = { 0, 1, 3, 4, 6, 7 };
46static const unsigned char tmdc_byte_d[16] = { 2, 5, 8, 9 };
47
48static const signed char tmdc_abs[TMDC_ABS] =
49 { ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE, ABS_RX, ABS_RY, ABS_RZ };
50static const signed char tmdc_abs_hat[TMDC_ABS_HAT] =
51 { ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y };
52static const signed char tmdc_abs_at[TMDC_ABS] =
53 { ABS_X, ABS_Y, ABS_RUDDER, -1, ABS_THROTTLE };
54static const signed char tmdc_abs_fm[TMDC_ABS] =
55 { ABS_RX, ABS_RY, ABS_X, ABS_Y };
56
57static const short tmdc_btn_pad[TMDC_BTN] =
58 { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_START, BTN_SELECT, BTN_TL, BTN_TR };
59static const short tmdc_btn_joy[TMDC_BTN] =
60 { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_THUMB2, BTN_PINKIE,
61 BTN_BASE3, BTN_BASE4, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z };
62static const short tmdc_btn_fm[TMDC_BTN] =
63 { BTN_TRIGGER, BTN_C, BTN_B, BTN_A, BTN_THUMB, BTN_X, BTN_Y, BTN_Z, BTN_TOP, BTN_TOP2 };
64static const short tmdc_btn_at[TMDC_BTN] =
65 { BTN_TRIGGER, BTN_THUMB2, BTN_PINKIE, BTN_THUMB, BTN_BASE6, BTN_BASE5, BTN_BASE4,
66 BTN_BASE3, BTN_BASE2, BTN_BASE };
67
68static const struct {
69 int x;
70 int y;
71} tmdc_hat_to_axis[] = {{ 0, 0}, { 1, 0}, { 0,-1}, {-1, 0}, { 0, 1}};
72
73static const struct tmdc_model {
74 unsigned char id;
75 const char *name;
76 char abs;
77 char hats;
78 char btnc[4];
79 char btno[4];
80 const signed char *axes;
81 const short *buttons;
82} tmdc_models[] = {
83 { 1, "ThrustMaster Millennium 3D Inceptor", 6, 2, { 4, 2 }, { 4, 6 }, tmdc_abs, tmdc_btn_joy },
84 { 3, "ThrustMaster Rage 3D Gamepad", 2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
85 { 4, "ThrustMaster Attack Throttle", 5, 2, { 4, 6 }, { 4, 2 }, tmdc_abs_at, tmdc_btn_at },
86 { 8, "ThrustMaster FragMaster", 4, 0, { 8, 2 }, { 0, 0 }, tmdc_abs_fm, tmdc_btn_fm },
87 { 163, "Thrustmaster Fusion GamePad", 2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
88 { 0, "Unknown %d-axis, %d-button TM device %d", 0, 0, { 0, 0 }, { 0, 0 }, tmdc_abs, tmdc_btn_joy }
89};
90
91
92struct tmdc_port {
93 struct input_dev *dev;
94 char name[64];
95 char phys[32];
96 int mode;
97 const signed char *abs;
98 const short *btn;
99 unsigned char absc;
100 unsigned char btnc[4];
101 unsigned char btno[4];
102};
103
104struct tmdc {
105 struct gameport *gameport;
106 struct tmdc_port *port[2];
107#if 0
108 struct input_dev *dev[2];
109 char name[2][64];
110 char phys[2][32];
111 int mode[2];
112 signed char *abs[2];
113 short *btn[2];
114 unsigned char absc[2];
115 unsigned char btnc[2][4];
116 unsigned char btno[2][4];
117#endif
118 int reads;
119 int bads;
120 unsigned char exists;
121};
122
123/*
124 * tmdc_read_packet() reads a ThrustMaster packet.
125 */
126
127static int tmdc_read_packet(struct gameport *gameport, unsigned char data[2][TMDC_MAX_LENGTH])
128{
129 unsigned char u, v, w, x;
130 unsigned long flags;
131 int i[2], j[2], t[2], p, k;
132
133 p = gameport_time(gameport, TMDC_MAX_STROBE);
134
135 for (k = 0; k < 2; k++) {
136 t[k] = gameport_time(gameport, TMDC_MAX_START);
137 i[k] = j[k] = 0;
138 }
139
140 local_irq_save(flags);
141 gameport_trigger(gameport);
142
143 w = gameport_read(gameport) >> 4;
144
145 do {
146 x = w;
147 w = gameport_read(gameport) >> 4;
148
149 for (k = 0, v = w, u = x; k < 2; k++, v >>= 2, u >>= 2) {
150 if (~v & u & 2) {
151 if (t[k] <= 0 || i[k] >= TMDC_MAX_LENGTH) continue;
152 t[k] = p;
153 if (j[k] == 0) { /* Start bit */
154 if (~v & 1) t[k] = 0;
155 data[k][i[k]] = 0; j[k]++; continue;
156 }
157 if (j[k] == 9) { /* Stop bit */
158 if (v & 1) t[k] = 0;
159 j[k] = 0; i[k]++; continue;
160 }
161 data[k][i[k]] |= (~v & 1) << (j[k]++ - 1); /* Data bit */
162 }
163 t[k]--;
164 }
165 } while (t[0] > 0 || t[1] > 0);
166
167 local_irq_restore(flags);
168
169 return (i[0] == TMDC_MAX_LENGTH) | ((i[1] == TMDC_MAX_LENGTH) << 1);
170}
171
172static int tmdc_parse_packet(struct tmdc_port *port, unsigned char *data)
173{
174 int i, k, l;
175
176 if (data[TMDC_BYTE_ID] != port->mode)
177 return -1;
178
179 for (i = 0; i < port->absc; i++) {
180 if (port->abs[i] < 0)
181 return 0;
182
183 input_report_abs(port->dev, port->abs[i], data[tmdc_byte_a[i]]);
184 }
185
186 switch (port->mode) {
187
188 case TMDC_MODE_M3DI:
189
190 i = tmdc_byte_d[0];
191 input_report_abs(port->dev, ABS_HAT0X, ((data[i] >> 3) & 1) - ((data[i] >> 1) & 1));
192 input_report_abs(port->dev, ABS_HAT0Y, ((data[i] >> 2) & 1) - ( data[i] & 1));
193 break;
194
195 case TMDC_MODE_AT:
196
197 i = tmdc_byte_a[3];
198 input_report_abs(port->dev, ABS_HAT0X, tmdc_hat_to_axis[(data[i] - 141) / 25].x);
199 input_report_abs(port->dev, ABS_HAT0Y, tmdc_hat_to_axis[(data[i] - 141) / 25].y);
200 break;
201
202 }
203
204 for (k = l = 0; k < 4; k++) {
205 for (i = 0; i < port->btnc[k]; i++)
206 input_report_key(port->dev, port->btn[i + l],
207 ((data[tmdc_byte_d[k]] >> (i + port->btno[k])) & 1));
208 l += port->btnc[k];
209 }
210
211 input_sync(port->dev);
212
213 return 0;
214}
215
216/*
217 * tmdc_poll() reads and analyzes ThrustMaster joystick data.
218 */
219
220static void tmdc_poll(struct gameport *gameport)
221{
222 unsigned char data[2][TMDC_MAX_LENGTH];
223 struct tmdc *tmdc = gameport_get_drvdata(gameport);
224 unsigned char r, bad = 0;
225 int i;
226
227 tmdc->reads++;
228
229 if ((r = tmdc_read_packet(tmdc->gameport, data)) != tmdc->exists)
230 bad = 1;
231 else {
232 for (i = 0; i < 2; i++) {
233 if (r & (1 << i) & tmdc->exists) {
234
235 if (tmdc_parse_packet(tmdc->port[i], data[i]))
236 bad = 1;
237 }
238 }
239 }
240
241 tmdc->bads += bad;
242}
243
244static int tmdc_open(struct input_dev *dev)
245{
246 struct tmdc *tmdc = input_get_drvdata(dev);
247
248 gameport_start_polling(tmdc->gameport);
249 return 0;
250}
251
252static void tmdc_close(struct input_dev *dev)
253{
254 struct tmdc *tmdc = input_get_drvdata(dev);
255
256 gameport_stop_polling(tmdc->gameport);
257}
258
259static int tmdc_setup_port(struct tmdc *tmdc, int idx, unsigned char *data)
260{
261 const struct tmdc_model *model;
262 struct tmdc_port *port;
263 struct input_dev *input_dev;
264 int i, j, b = 0;
265 int err;
266
267 tmdc->port[idx] = port = kzalloc_obj(struct tmdc_port);
268 input_dev = input_allocate_device();
269 if (!port || !input_dev) {
270 err = -ENOMEM;
271 goto fail;
272 }
273
274 port->mode = data[TMDC_BYTE_ID];
275
276 for (model = tmdc_models; model->id && model->id != port->mode; model++)
277 /* empty */;
278
279 port->abs = model->axes;
280 port->btn = model->buttons;
281
282 if (!model->id) {
283 port->absc = data[TMDC_BYTE_DEF] >> 4;
284 for (i = 0; i < 4; i++)
285 port->btnc[i] = i < (data[TMDC_BYTE_DEF] & 0xf) ? 8 : 0;
286 } else {
287 port->absc = model->abs;
288 for (i = 0; i < 4; i++)
289 port->btnc[i] = model->btnc[i];
290 }
291
292 for (i = 0; i < 4; i++)
293 port->btno[i] = model->btno[i];
294
295 snprintf(port->name, sizeof(port->name), model->name,
296 port->absc, (data[TMDC_BYTE_DEF] & 0xf) << 3, port->mode);
297 snprintf(port->phys, sizeof(port->phys), "%s/input%d", tmdc->gameport->phys, i);
298
299 port->dev = input_dev;
300
301 input_dev->name = port->name;
302 input_dev->phys = port->phys;
303 input_dev->id.bustype = BUS_GAMEPORT;
304 input_dev->id.vendor = GAMEPORT_ID_VENDOR_THRUSTMASTER;
305 input_dev->id.product = model->id;
306 input_dev->id.version = 0x0100;
307 input_dev->dev.parent = &tmdc->gameport->dev;
308
309 input_set_drvdata(input_dev, tmdc);
310
311 input_dev->open = tmdc_open;
312 input_dev->close = tmdc_close;
313
314 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
315
316 for (i = 0; i < port->absc && i < TMDC_ABS; i++)
317 if (port->abs[i] >= 0)
318 input_set_abs_params(input_dev, port->abs[i], 8, 248, 2, 4);
319
320 for (i = 0; i < model->hats && i < TMDC_ABS_HAT; i++)
321 input_set_abs_params(input_dev, tmdc_abs_hat[i], -1, 1, 0, 0);
322
323 for (i = 0; i < 4; i++) {
324 for (j = 0; j < port->btnc[i] && j < TMDC_BTN; j++)
325 set_bit(port->btn[j + b], input_dev->keybit);
326 b += port->btnc[i];
327 }
328
329 err = input_register_device(port->dev);
330 if (err)
331 goto fail;
332
333 return 0;
334
335 fail: input_free_device(input_dev);
336 kfree(port);
337 return err;
338}
339
340/*
341 * tmdc_probe() probes for ThrustMaster type joysticks.
342 */
343
344static int tmdc_connect(struct gameport *gameport, struct gameport_driver *drv)
345{
346 unsigned char data[2][TMDC_MAX_LENGTH];
347 struct tmdc *tmdc;
348 int i;
349 int err;
350
351 tmdc = kzalloc_obj(*tmdc);
352 if (!tmdc)
353 return -ENOMEM;
354
355 tmdc->gameport = gameport;
356
357 gameport_set_drvdata(gameport, tmdc);
358
359 err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
360 if (err)
361 goto fail1;
362
363 if (!(tmdc->exists = tmdc_read_packet(gameport, data))) {
364 err = -ENODEV;
365 goto fail2;
366 }
367
368 gameport_set_poll_handler(gameport, tmdc_poll);
369 gameport_set_poll_interval(gameport, 20);
370
371 for (i = 0; i < 2; i++) {
372 if (tmdc->exists & (1 << i)) {
373
374 err = tmdc_setup_port(tmdc, i, data[i]);
375 if (err)
376 goto fail3;
377 }
378 }
379
380 return 0;
381
382 fail3: while (--i >= 0) {
383 if (tmdc->port[i]) {
384 input_unregister_device(tmdc->port[i]->dev);
385 kfree(tmdc->port[i]);
386 }
387 }
388 fail2: gameport_close(gameport);
389 fail1: gameport_set_drvdata(gameport, NULL);
390 kfree(tmdc);
391 return err;
392}
393
394static void tmdc_disconnect(struct gameport *gameport)
395{
396 struct tmdc *tmdc = gameport_get_drvdata(gameport);
397 int i;
398
399 for (i = 0; i < 2; i++) {
400 if (tmdc->port[i]) {
401 input_unregister_device(tmdc->port[i]->dev);
402 kfree(tmdc->port[i]);
403 }
404 }
405 gameport_close(gameport);
406 gameport_set_drvdata(gameport, NULL);
407 kfree(tmdc);
408}
409
410static struct gameport_driver tmdc_drv = {
411 .driver = {
412 .name = "tmdc",
413 .owner = THIS_MODULE,
414 },
415 .description = DRIVER_DESC,
416 .connect = tmdc_connect,
417 .disconnect = tmdc_disconnect,
418};
419
420module_gameport_driver(tmdc_drv);