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31#include <linux/delay.h>
32#include <linux/kernel.h>
33#include <linux/slab.h>
34#include <linux/module.h>
35#include <linux/init.h>
36#include <linux/input.h>
37#include <linux/gameport.h>
38#include <linux/jiffies.h>
39
40#define DRIVER_DESC "Genius Flight 2000 joystick driver"
41
42MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
43MODULE_DESCRIPTION(DRIVER_DESC);
44MODULE_LICENSE("GPL");
45
46#define GF2K_START 400
47#define GF2K_STROBE 40
48#define GF2K_TIMEOUT 4
49#define GF2K_LENGTH 80
50
51
52
53
54
55#define GF2K_ID_G09 1
56#define GF2K_ID_F30D 2
57#define GF2K_ID_F30 3
58#define GF2K_ID_F31D 4
59#define GF2K_ID_F305 5
60#define GF2K_ID_F23P 6
61#define GF2K_ID_F31 7
62#define GF2K_ID_MAX 7
63
64static char gf2k_length[] = { 40, 40, 40, 40, 40, 40, 40, 40 };
65static char gf2k_hat_to_axis[][2] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
66
67static char *gf2k_names[] = {"", "Genius G-09D", "Genius F-30D", "Genius F-30", "Genius MaxFighter F-31D",
68 "Genius F-30-5", "Genius Flight2000 F-23", "Genius F-31"};
69static unsigned char gf2k_hats[] = { 0, 2, 0, 0, 2, 0, 2, 0 };
70static unsigned char gf2k_axes[] = { 0, 2, 0, 0, 4, 0, 4, 0 };
71static unsigned char gf2k_joys[] = { 0, 0, 0, 0,10, 0, 8, 0 };
72static unsigned char gf2k_pads[] = { 0, 6, 0, 0, 0, 0, 0, 0 };
73static unsigned char gf2k_lens[] = { 0,18, 0, 0,18, 0,18, 0 };
74
75static unsigned char gf2k_abs[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RUDDER, ABS_GAS, ABS_BRAKE };
76static short gf2k_btn_joy[] = { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4 };
77static short gf2k_btn_pad[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_TL2, BTN_TR2, BTN_START, BTN_SELECT };
78
79
80static short gf2k_seq_reset[] = { 240, 340, 0 };
81static short gf2k_seq_digital[] = { 590, 320, 860, 0 };
82
83struct gf2k {
84 struct gameport *gameport;
85 struct input_dev *dev;
86 int reads;
87 int bads;
88 unsigned char id;
89 unsigned char length;
90 char phys[32];
91};
92
93
94
95
96
97static int gf2k_read_packet(struct gameport *gameport, int length, char *data)
98{
99 unsigned char u, v;
100 int i;
101 unsigned int t, p;
102 unsigned long flags;
103
104 t = gameport_time(gameport, GF2K_START);
105 p = gameport_time(gameport, GF2K_STROBE);
106
107 i = 0;
108
109 local_irq_save(flags);
110
111 gameport_trigger(gameport);
112 v = gameport_read(gameport);
113
114 while (t > 0 && i < length) {
115 t--; u = v;
116 v = gameport_read(gameport);
117 if (v & ~u & 0x10) {
118 data[i++] = v >> 5;
119 t = p;
120 }
121 }
122
123 local_irq_restore(flags);
124
125 return i;
126}
127
128
129
130
131
132
133static void gf2k_trigger_seq(struct gameport *gameport, short *seq)
134{
135
136 unsigned long flags;
137 int i, t;
138
139 local_irq_save(flags);
140
141 i = 0;
142 do {
143 gameport_trigger(gameport);
144 t = gameport_time(gameport, GF2K_TIMEOUT * 1000);
145 while ((gameport_read(gameport) & 1) && t) t--;
146 udelay(seq[i]);
147 } while (seq[++i]);
148
149 gameport_trigger(gameport);
150
151 local_irq_restore(flags);
152}
153
154
155
156
157
158
159
160
161#define GB(p,n,s) gf2k_get_bits(data, p, n, s)
162
163static int gf2k_get_bits(unsigned char *buf, int pos, int num, int shift)
164{
165 __u64 data = 0;
166 int i;
167
168 for (i = 0; i < num / 3 + 2; i++)
169 data |= buf[pos / 3 + i] << (i * 3);
170 data >>= pos % 3;
171 data &= (1 << num) - 1;
172 data <<= shift;
173
174 return data;
175}
176
177static void gf2k_read(struct gf2k *gf2k, unsigned char *data)
178{
179 struct input_dev *dev = gf2k->dev;
180 int i, t;
181
182 for (i = 0; i < 4 && i < gf2k_axes[gf2k->id]; i++)
183 input_report_abs(dev, gf2k_abs[i], GB(i<<3,8,0) | GB(i+46,1,8) | GB(i+50,1,9));
184
185 for (i = 0; i < 2 && i < gf2k_axes[gf2k->id] - 4; i++)
186 input_report_abs(dev, gf2k_abs[i], GB(i*9+60,8,0) | GB(i+54,1,9));
187
188 t = GB(40,4,0);
189
190 for (i = 0; i < gf2k_hats[gf2k->id]; i++)
191 input_report_abs(dev, ABS_HAT0X + i, gf2k_hat_to_axis[t][i]);
192
193 t = GB(44,2,0) | GB(32,8,2) | GB(78,2,10);
194
195 for (i = 0; i < gf2k_joys[gf2k->id]; i++)
196 input_report_key(dev, gf2k_btn_joy[i], (t >> i) & 1);
197
198 for (i = 0; i < gf2k_pads[gf2k->id]; i++)
199 input_report_key(dev, gf2k_btn_pad[i], (t >> i) & 1);
200
201 input_sync(dev);
202}
203
204
205
206
207
208static void gf2k_poll(struct gameport *gameport)
209{
210 struct gf2k *gf2k = gameport_get_drvdata(gameport);
211 unsigned char data[GF2K_LENGTH];
212
213 gf2k->reads++;
214
215 if (gf2k_read_packet(gf2k->gameport, gf2k_length[gf2k->id], data) < gf2k_length[gf2k->id])
216 gf2k->bads++;
217 else
218 gf2k_read(gf2k, data);
219}
220
221static int gf2k_open(struct input_dev *dev)
222{
223 struct gf2k *gf2k = input_get_drvdata(dev);
224
225 gameport_start_polling(gf2k->gameport);
226 return 0;
227}
228
229static void gf2k_close(struct input_dev *dev)
230{
231 struct gf2k *gf2k = input_get_drvdata(dev);
232
233 gameport_stop_polling(gf2k->gameport);
234}
235
236
237
238
239
240static int gf2k_connect(struct gameport *gameport, struct gameport_driver *drv)
241{
242 struct gf2k *gf2k;
243 struct input_dev *input_dev;
244 unsigned char data[GF2K_LENGTH];
245 int i, err;
246
247 gf2k = kzalloc(sizeof(struct gf2k), GFP_KERNEL);
248 input_dev = input_allocate_device();
249 if (!gf2k || !input_dev) {
250 err = -ENOMEM;
251 goto fail1;
252 }
253
254 gf2k->gameport = gameport;
255 gf2k->dev = input_dev;
256
257 gameport_set_drvdata(gameport, gf2k);
258
259 err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
260 if (err)
261 goto fail1;
262
263 gf2k_trigger_seq(gameport, gf2k_seq_reset);
264
265 msleep(GF2K_TIMEOUT);
266
267 gf2k_trigger_seq(gameport, gf2k_seq_digital);
268
269 msleep(GF2K_TIMEOUT);
270
271 if (gf2k_read_packet(gameport, GF2K_LENGTH, data) < 12) {
272 err = -ENODEV;
273 goto fail2;
274 }
275
276 if (!(gf2k->id = GB(7,2,0) | GB(3,3,2) | GB(0,3,5))) {
277 err = -ENODEV;
278 goto fail2;
279 }
280
281#ifdef RESET_WORKS
282 if ((gf2k->id != (GB(19,2,0) | GB(15,3,2) | GB(12,3,5))) ||
283 (gf2k->id != (GB(31,2,0) | GB(27,3,2) | GB(24,3,5)))) {
284 err = -ENODEV;
285 goto fail2;
286 }
287#else
288 gf2k->id = 6;
289#endif
290
291 if (gf2k->id > GF2K_ID_MAX || !gf2k_axes[gf2k->id]) {
292 printk(KERN_WARNING "gf2k.c: Not yet supported joystick on %s. [id: %d type:%s]\n",
293 gameport->phys, gf2k->id, gf2k->id > GF2K_ID_MAX ? "Unknown" : gf2k_names[gf2k->id]);
294 err = -ENODEV;
295 goto fail2;
296 }
297
298 gameport_set_poll_handler(gameport, gf2k_poll);
299 gameport_set_poll_interval(gameport, 20);
300
301 snprintf(gf2k->phys, sizeof(gf2k->phys), "%s/input0", gameport->phys);
302
303 gf2k->length = gf2k_lens[gf2k->id];
304
305 input_dev->name = gf2k_names[gf2k->id];
306 input_dev->phys = gf2k->phys;
307 input_dev->id.bustype = BUS_GAMEPORT;
308 input_dev->id.vendor = GAMEPORT_ID_VENDOR_GENIUS;
309 input_dev->id.product = gf2k->id;
310 input_dev->id.version = 0x0100;
311 input_dev->dev.parent = &gameport->dev;
312
313 input_set_drvdata(input_dev, gf2k);
314
315 input_dev->open = gf2k_open;
316 input_dev->close = gf2k_close;
317
318 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
319
320 for (i = 0; i < gf2k_axes[gf2k->id]; i++)
321 set_bit(gf2k_abs[i], input_dev->absbit);
322
323 for (i = 0; i < gf2k_hats[gf2k->id]; i++) {
324 set_bit(ABS_HAT0X + i, input_dev->absbit);
325 input_dev->absmin[ABS_HAT0X + i] = -1;
326 input_dev->absmax[ABS_HAT0X + i] = 1;
327 }
328
329 for (i = 0; i < gf2k_joys[gf2k->id]; i++)
330 set_bit(gf2k_btn_joy[i], input_dev->keybit);
331
332 for (i = 0; i < gf2k_pads[gf2k->id]; i++)
333 set_bit(gf2k_btn_pad[i], input_dev->keybit);
334
335 gf2k_read_packet(gameport, gf2k->length, data);
336 gf2k_read(gf2k, data);
337
338 for (i = 0; i < gf2k_axes[gf2k->id]; i++) {
339 input_dev->absmax[gf2k_abs[i]] = (i < 2) ? input_dev->abs[gf2k_abs[i]] * 2 - 32 :
340 input_dev->abs[gf2k_abs[0]] + input_dev->abs[gf2k_abs[1]] - 32;
341 input_dev->absmin[gf2k_abs[i]] = 32;
342 input_dev->absfuzz[gf2k_abs[i]] = 8;
343 input_dev->absflat[gf2k_abs[i]] = (i < 2) ? 24 : 0;
344 }
345
346 err = input_register_device(gf2k->dev);
347 if (err)
348 goto fail2;
349
350 return 0;
351
352 fail2: gameport_close(gameport);
353 fail1: gameport_set_drvdata(gameport, NULL);
354 input_free_device(input_dev);
355 kfree(gf2k);
356 return err;
357}
358
359static void gf2k_disconnect(struct gameport *gameport)
360{
361 struct gf2k *gf2k = gameport_get_drvdata(gameport);
362
363 input_unregister_device(gf2k->dev);
364 gameport_close(gameport);
365 gameport_set_drvdata(gameport, NULL);
366 kfree(gf2k);
367}
368
369static struct gameport_driver gf2k_drv = {
370 .driver = {
371 .name = "gf2k",
372 },
373 .description = DRIVER_DESC,
374 .connect = gf2k_connect,
375 .disconnect = gf2k_disconnect,
376};
377
378static int __init gf2k_init(void)
379{
380 gameport_register_driver(&gf2k_drv);
381 return 0;
382}
383
384static void __exit gf2k_exit(void)
385{
386 gameport_unregister_driver(&gf2k_drv);
387}
388
389module_init(gf2k_init);
390module_exit(gf2k_exit);
391
