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