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1da177e4 LT |
1 | /* |
2 | * $Id: gf2k.c,v 1.19 2002/01/22 20:27:43 vojtech Exp $ | |
3 | * | |
4 | * Copyright (c) 1998-2001 Vojtech Pavlik | |
5 | */ | |
6 | ||
7 | /* | |
8 | * Genius Flight 2000 joystick driver for Linux | |
9 | */ | |
10 | ||
11 | /* | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
25 | * | |
26 | * Should you need to contact me, the author, you can do so either by | |
27 | * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: | |
28 | * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic | |
29 | */ | |
30 | ||
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 | ||
39 | #define DRIVER_DESC "Genius Flight 2000 joystick driver" | |
40 | ||
41 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
42 | MODULE_DESCRIPTION(DRIVER_DESC); | |
43 | MODULE_LICENSE("GPL"); | |
44 | ||
45 | #define GF2K_START 400 /* The time we wait for the first bit [400 us] */ | |
46 | #define GF2K_STROBE 40 /* The time we wait for the first bit [40 us] */ | |
47 | #define GF2K_TIMEOUT 4 /* Wait for everything to settle [4 ms] */ | |
48 | #define GF2K_LENGTH 80 /* Max number of triplets in a packet */ | |
49 | ||
50 | /* | |
51 | * Genius joystick ids ... | |
52 | */ | |
53 | ||
54 | #define GF2K_ID_G09 1 | |
55 | #define GF2K_ID_F30D 2 | |
56 | #define GF2K_ID_F30 3 | |
57 | #define GF2K_ID_F31D 4 | |
58 | #define GF2K_ID_F305 5 | |
59 | #define GF2K_ID_F23P 6 | |
60 | #define GF2K_ID_F31 7 | |
61 | #define GF2K_ID_MAX 7 | |
62 | ||
63 | static char gf2k_length[] = { 40, 40, 40, 40, 40, 40, 40, 40 }; | |
64 | static char gf2k_hat_to_axis[][2] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}}; | |
65 | ||
66 | static char *gf2k_names[] = {"", "Genius G-09D", "Genius F-30D", "Genius F-30", "Genius MaxFighter F-31D", | |
67 | "Genius F-30-5", "Genius Flight2000 F-23", "Genius F-31"}; | |
68 | static unsigned char gf2k_hats[] = { 0, 2, 0, 0, 2, 0, 2, 0 }; | |
69 | static unsigned char gf2k_axes[] = { 0, 2, 0, 0, 4, 0, 4, 0 }; | |
70 | static unsigned char gf2k_joys[] = { 0, 0, 0, 0,10, 0, 8, 0 }; | |
71 | static unsigned char gf2k_pads[] = { 0, 6, 0, 0, 0, 0, 0, 0 }; | |
72 | static unsigned char gf2k_lens[] = { 0,18, 0, 0,18, 0,18, 0 }; | |
73 | ||
74 | static unsigned char gf2k_abs[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RUDDER, ABS_GAS, ABS_BRAKE }; | |
75 | static short gf2k_btn_joy[] = { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4 }; | |
76 | static 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 }; | |
77 | ||
78 | ||
79 | static short gf2k_seq_reset[] = { 240, 340, 0 }; | |
80 | static short gf2k_seq_digital[] = { 590, 320, 860, 0 }; | |
81 | ||
82 | struct gf2k { | |
83 | struct gameport *gameport; | |
17dd3f0f | 84 | struct input_dev *dev; |
1da177e4 LT |
85 | int reads; |
86 | int bads; | |
87 | unsigned char id; | |
88 | unsigned char length; | |
89 | char phys[32]; | |
90 | }; | |
91 | ||
92 | /* | |
93 | * gf2k_read_packet() reads a Genius Flight2000 packet. | |
94 | */ | |
95 | ||
96 | static int gf2k_read_packet(struct gameport *gameport, int length, char *data) | |
97 | { | |
98 | unsigned char u, v; | |
99 | int i; | |
100 | unsigned int t, p; | |
101 | unsigned long flags; | |
102 | ||
103 | t = gameport_time(gameport, GF2K_START); | |
104 | p = gameport_time(gameport, GF2K_STROBE); | |
105 | ||
106 | i = 0; | |
107 | ||
108 | local_irq_save(flags); | |
109 | ||
110 | gameport_trigger(gameport); | |
111 | v = gameport_read(gameport); | |
112 | ||
113 | while (t > 0 && i < length) { | |
114 | t--; u = v; | |
115 | v = gameport_read(gameport); | |
116 | if (v & ~u & 0x10) { | |
117 | data[i++] = v >> 5; | |
118 | t = p; | |
119 | } | |
120 | } | |
121 | ||
122 | local_irq_restore(flags); | |
123 | ||
124 | return i; | |
125 | } | |
126 | ||
127 | /* | |
128 | * gf2k_trigger_seq() initializes a Genius Flight2000 joystick | |
129 | * into digital mode. | |
130 | */ | |
131 | ||
132 | static void gf2k_trigger_seq(struct gameport *gameport, short *seq) | |
133 | { | |
134 | ||
135 | unsigned long flags; | |
136 | int i, t; | |
137 | ||
138 | local_irq_save(flags); | |
139 | ||
140 | i = 0; | |
141 | do { | |
142 | gameport_trigger(gameport); | |
143 | t = gameport_time(gameport, GF2K_TIMEOUT * 1000); | |
144 | while ((gameport_read(gameport) & 1) && t) t--; | |
145 | udelay(seq[i]); | |
146 | } while (seq[++i]); | |
147 | ||
148 | gameport_trigger(gameport); | |
149 | ||
150 | local_irq_restore(flags); | |
151 | } | |
152 | ||
153 | /* | |
154 | * js_sw_get_bits() composes bits from the triplet buffer into a __u64. | |
155 | * Parameter 'pos' is bit number inside packet where to start at, 'num' is number | |
156 | * of bits to be read, 'shift' is offset in the resulting __u64 to start at, bits | |
157 | * is number of bits per triplet. | |
158 | */ | |
159 | ||
160 | #define GB(p,n,s) gf2k_get_bits(data, p, n, s) | |
161 | ||
162 | static int gf2k_get_bits(unsigned char *buf, int pos, int num, int shift) | |
163 | { | |
164 | __u64 data = 0; | |
165 | int i; | |
166 | ||
167 | for (i = 0; i < num / 3 + 2; i++) | |
168 | data |= buf[pos / 3 + i] << (i * 3); | |
169 | data >>= pos % 3; | |
170 | data &= (1 << num) - 1; | |
171 | data <<= shift; | |
172 | ||
173 | return data; | |
174 | } | |
175 | ||
176 | static void gf2k_read(struct gf2k *gf2k, unsigned char *data) | |
177 | { | |
17dd3f0f | 178 | struct input_dev *dev = gf2k->dev; |
1da177e4 LT |
179 | int i, t; |
180 | ||
181 | for (i = 0; i < 4 && i < gf2k_axes[gf2k->id]; i++) | |
182 | input_report_abs(dev, gf2k_abs[i], GB(i<<3,8,0) | GB(i+46,1,8) | GB(i+50,1,9)); | |
183 | ||
184 | for (i = 0; i < 2 && i < gf2k_axes[gf2k->id] - 4; i++) | |
185 | input_report_abs(dev, gf2k_abs[i], GB(i*9+60,8,0) | GB(i+54,1,9)); | |
186 | ||
187 | t = GB(40,4,0); | |
188 | ||
189 | for (i = 0; i < gf2k_hats[gf2k->id]; i++) | |
190 | input_report_abs(dev, ABS_HAT0X + i, gf2k_hat_to_axis[t][i]); | |
191 | ||
192 | t = GB(44,2,0) | GB(32,8,2) | GB(78,2,10); | |
193 | ||
194 | for (i = 0; i < gf2k_joys[gf2k->id]; i++) | |
195 | input_report_key(dev, gf2k_btn_joy[i], (t >> i) & 1); | |
196 | ||
197 | for (i = 0; i < gf2k_pads[gf2k->id]; i++) | |
198 | input_report_key(dev, gf2k_btn_pad[i], (t >> i) & 1); | |
199 | ||
200 | input_sync(dev); | |
201 | } | |
202 | ||
203 | /* | |
204 | * gf2k_poll() reads and analyzes Genius joystick data. | |
205 | */ | |
206 | ||
207 | static void gf2k_poll(struct gameport *gameport) | |
208 | { | |
209 | struct gf2k *gf2k = gameport_get_drvdata(gameport); | |
210 | unsigned char data[GF2K_LENGTH]; | |
211 | ||
212 | gf2k->reads++; | |
213 | ||
214 | if (gf2k_read_packet(gf2k->gameport, gf2k_length[gf2k->id], data) < gf2k_length[gf2k->id]) | |
215 | gf2k->bads++; | |
216 | else | |
217 | gf2k_read(gf2k, data); | |
218 | } | |
219 | ||
220 | static int gf2k_open(struct input_dev *dev) | |
221 | { | |
222 | struct gf2k *gf2k = dev->private; | |
223 | ||
224 | gameport_start_polling(gf2k->gameport); | |
225 | return 0; | |
226 | } | |
227 | ||
228 | static void gf2k_close(struct input_dev *dev) | |
229 | { | |
230 | struct gf2k *gf2k = dev->private; | |
231 | ||
232 | gameport_stop_polling(gf2k->gameport); | |
233 | } | |
234 | ||
235 | /* | |
236 | * gf2k_connect() probes for Genius id joysticks. | |
237 | */ | |
238 | ||
239 | static int gf2k_connect(struct gameport *gameport, struct gameport_driver *drv) | |
240 | { | |
241 | struct gf2k *gf2k; | |
17dd3f0f | 242 | struct input_dev *input_dev; |
1da177e4 LT |
243 | unsigned char data[GF2K_LENGTH]; |
244 | int i, err; | |
245 | ||
17dd3f0f DT |
246 | gf2k = kzalloc(sizeof(struct gf2k), GFP_KERNEL); |
247 | input_dev = input_allocate_device(); | |
248 | if (!gf2k || !input_dev) { | |
249 | err = -ENOMEM; | |
250 | goto fail1; | |
251 | } | |
1da177e4 LT |
252 | |
253 | gf2k->gameport = gameport; | |
17dd3f0f | 254 | gf2k->dev = input_dev; |
1da177e4 LT |
255 | |
256 | gameport_set_drvdata(gameport, gf2k); | |
257 | ||
258 | err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW); | |
259 | if (err) | |
260 | goto fail1; | |
261 | ||
262 | gf2k_trigger_seq(gameport, gf2k_seq_reset); | |
263 | ||
264 | msleep(GF2K_TIMEOUT); | |
265 | ||
266 | gf2k_trigger_seq(gameport, gf2k_seq_digital); | |
267 | ||
268 | msleep(GF2K_TIMEOUT); | |
269 | ||
270 | if (gf2k_read_packet(gameport, GF2K_LENGTH, data) < 12) { | |
271 | err = -ENODEV; | |
272 | goto fail2; | |
273 | } | |
274 | ||
275 | if (!(gf2k->id = GB(7,2,0) | GB(3,3,2) | GB(0,3,5))) { | |
276 | err = -ENODEV; | |
277 | goto fail2; | |
278 | } | |
279 | ||
280 | #ifdef RESET_WORKS | |
281 | if ((gf2k->id != (GB(19,2,0) | GB(15,3,2) | GB(12,3,5))) || | |
282 | (gf2k->id != (GB(31,2,0) | GB(27,3,2) | GB(24,3,5)))) { | |
283 | err = -ENODEV; | |
284 | goto fail2; | |
285 | } | |
286 | #else | |
287 | gf2k->id = 6; | |
288 | #endif | |
289 | ||
290 | if (gf2k->id > GF2K_ID_MAX || !gf2k_axes[gf2k->id]) { | |
291 | printk(KERN_WARNING "gf2k.c: Not yet supported joystick on %s. [id: %d type:%s]\n", | |
292 | gameport->phys, gf2k->id, gf2k->id > GF2K_ID_MAX ? "Unknown" : gf2k_names[gf2k->id]); | |
293 | err = -ENODEV; | |
294 | goto fail2; | |
295 | } | |
296 | ||
297 | gameport_set_poll_handler(gameport, gf2k_poll); | |
298 | gameport_set_poll_interval(gameport, 20); | |
299 | ||
300 | sprintf(gf2k->phys, "%s/input0", gameport->phys); | |
301 | ||
302 | gf2k->length = gf2k_lens[gf2k->id]; | |
303 | ||
17dd3f0f DT |
304 | input_dev->name = gf2k_names[gf2k->id]; |
305 | input_dev->phys = gf2k->phys; | |
306 | input_dev->id.bustype = BUS_GAMEPORT; | |
307 | input_dev->id.vendor = GAMEPORT_ID_VENDOR_GENIUS; | |
308 | input_dev->id.product = gf2k->id; | |
309 | input_dev->id.version = 0x0100; | |
310 | input_dev->cdev.dev = &gameport->dev; | |
311 | input_dev->private = gf2k; | |
1da177e4 | 312 | |
17dd3f0f DT |
313 | input_dev->open = gf2k_open; |
314 | input_dev->close = gf2k_close; | |
315 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); | |
1da177e4 LT |
316 | |
317 | for (i = 0; i < gf2k_axes[gf2k->id]; i++) | |
17dd3f0f | 318 | set_bit(gf2k_abs[i], input_dev->absbit); |
1da177e4 LT |
319 | |
320 | for (i = 0; i < gf2k_hats[gf2k->id]; i++) { | |
17dd3f0f DT |
321 | set_bit(ABS_HAT0X + i, input_dev->absbit); |
322 | input_dev->absmin[ABS_HAT0X + i] = -1; | |
323 | input_dev->absmax[ABS_HAT0X + i] = 1; | |
1da177e4 LT |
324 | } |
325 | ||
326 | for (i = 0; i < gf2k_joys[gf2k->id]; i++) | |
17dd3f0f | 327 | set_bit(gf2k_btn_joy[i], input_dev->keybit); |
1da177e4 LT |
328 | |
329 | for (i = 0; i < gf2k_pads[gf2k->id]; i++) | |
17dd3f0f | 330 | set_bit(gf2k_btn_pad[i], input_dev->keybit); |
1da177e4 LT |
331 | |
332 | gf2k_read_packet(gameport, gf2k->length, data); | |
333 | gf2k_read(gf2k, data); | |
334 | ||
335 | for (i = 0; i < gf2k_axes[gf2k->id]; i++) { | |
17dd3f0f DT |
336 | input_dev->absmax[gf2k_abs[i]] = (i < 2) ? input_dev->abs[gf2k_abs[i]] * 2 - 32 : |
337 | input_dev->abs[gf2k_abs[0]] + input_dev->abs[gf2k_abs[1]] - 32; | |
338 | input_dev->absmin[gf2k_abs[i]] = 32; | |
339 | input_dev->absfuzz[gf2k_abs[i]] = 8; | |
340 | input_dev->absflat[gf2k_abs[i]] = (i < 2) ? 24 : 0; | |
1da177e4 LT |
341 | } |
342 | ||
17dd3f0f | 343 | input_register_device(gf2k->dev); |
1da177e4 LT |
344 | |
345 | return 0; | |
346 | ||
17dd3f0f DT |
347 | fail2: gameport_close(gameport); |
348 | fail1: gameport_set_drvdata(gameport, NULL); | |
349 | input_free_device(input_dev); | |
1da177e4 LT |
350 | kfree(gf2k); |
351 | return err; | |
352 | } | |
353 | ||
354 | static void gf2k_disconnect(struct gameport *gameport) | |
355 | { | |
356 | struct gf2k *gf2k = gameport_get_drvdata(gameport); | |
357 | ||
17dd3f0f | 358 | input_unregister_device(gf2k->dev); |
1da177e4 LT |
359 | gameport_close(gameport); |
360 | gameport_set_drvdata(gameport, NULL); | |
361 | kfree(gf2k); | |
362 | } | |
363 | ||
364 | static struct gameport_driver gf2k_drv = { | |
365 | .driver = { | |
366 | .name = "gf2k", | |
367 | }, | |
368 | .description = DRIVER_DESC, | |
369 | .connect = gf2k_connect, | |
370 | .disconnect = gf2k_disconnect, | |
371 | }; | |
372 | ||
373 | static int __init gf2k_init(void) | |
374 | { | |
375 | gameport_register_driver(&gf2k_drv); | |
376 | return 0; | |
377 | } | |
378 | ||
379 | static void __exit gf2k_exit(void) | |
380 | { | |
381 | gameport_unregister_driver(&gf2k_drv); | |
382 | } | |
383 | ||
384 | module_init(gf2k_init); | |
385 | module_exit(gf2k_exit); |