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