Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Copyright (c) 1998-2001 Vojtech Pavlik |
3 | */ | |
4 | ||
5 | /* | |
6 | * Genius Flight 2000 joystick driver for Linux | |
7 | */ | |
8 | ||
9 | /* | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
24 | * Should you need to contact me, the author, you can do so either by | |
25 | * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: | |
26 | * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic | |
27 | */ | |
28 | ||
29 | #include <linux/delay.h> | |
30 | #include <linux/kernel.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/module.h> | |
1da177e4 LT |
33 | #include <linux/input.h> |
34 | #include <linux/gameport.h> | |
4e57b681 | 35 | #include <linux/jiffies.h> |
1da177e4 LT |
36 | |
37 | #define DRIVER_DESC "Genius Flight 2000 joystick driver" | |
38 | ||
39 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
40 | MODULE_DESCRIPTION(DRIVER_DESC); | |
41 | MODULE_LICENSE("GPL"); | |
42 | ||
43 | #define GF2K_START 400 /* The time we wait for the first bit [400 us] */ | |
44 | #define GF2K_STROBE 40 /* The time we wait for the first bit [40 us] */ | |
45 | #define GF2K_TIMEOUT 4 /* Wait for everything to settle [4 ms] */ | |
46 | #define GF2K_LENGTH 80 /* Max number of triplets in a packet */ | |
47 | ||
48 | /* | |
49 | * Genius joystick ids ... | |
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 | ||
61 | static char gf2k_length[] = { 40, 40, 40, 40, 40, 40, 40, 40 }; | |
62 | 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}}; | |
63 | ||
64 | static 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"}; | |
66 | static unsigned char gf2k_hats[] = { 0, 2, 0, 0, 2, 0, 2, 0 }; | |
67 | static unsigned char gf2k_axes[] = { 0, 2, 0, 0, 4, 0, 4, 0 }; | |
68 | static unsigned char gf2k_joys[] = { 0, 0, 0, 0,10, 0, 8, 0 }; | |
69 | static unsigned char gf2k_pads[] = { 0, 6, 0, 0, 0, 0, 0, 0 }; | |
70 | static unsigned char gf2k_lens[] = { 0,18, 0, 0,18, 0,18, 0 }; | |
71 | ||
72 | static unsigned char gf2k_abs[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RUDDER, ABS_GAS, ABS_BRAKE }; | |
73 | static short gf2k_btn_joy[] = { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4 }; | |
74 | 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 }; | |
75 | ||
76 | ||
77 | static short gf2k_seq_reset[] = { 240, 340, 0 }; | |
78 | static short gf2k_seq_digital[] = { 590, 320, 860, 0 }; | |
79 | ||
80 | struct gf2k { | |
81 | struct gameport *gameport; | |
17dd3f0f | 82 | struct input_dev *dev; |
1da177e4 LT |
83 | int reads; |
84 | int bads; | |
85 | unsigned char id; | |
86 | unsigned char length; | |
87 | char phys[32]; | |
88 | }; | |
89 | ||
90 | /* | |
91 | * gf2k_read_packet() reads a Genius Flight2000 packet. | |
92 | */ | |
93 | ||
94 | static 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 | * gf2k_trigger_seq() initializes a Genius Flight2000 joystick | |
127 | * into digital mode. | |
128 | */ | |
129 | ||
130 | static 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 | * js_sw_get_bits() composes bits from the triplet buffer into a __u64. | |
153 | * Parameter 'pos' is bit number inside packet where to start at, 'num' is number | |
154 | * of bits to be read, 'shift' is offset in the resulting __u64 to start at, bits | |
155 | * is number of bits per triplet. | |
156 | */ | |
157 | ||
158 | #define GB(p,n,s) gf2k_get_bits(data, p, n, s) | |
159 | ||
160 | static 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 | ||
174 | static void gf2k_read(struct gf2k *gf2k, unsigned char *data) | |
175 | { | |
17dd3f0f | 176 | struct input_dev *dev = gf2k->dev; |
1da177e4 LT |
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 | * gf2k_poll() reads and analyzes Genius joystick data. | |
203 | */ | |
204 | ||
205 | static 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 | ||
218 | static int gf2k_open(struct input_dev *dev) | |
219 | { | |
8715c1cf | 220 | struct gf2k *gf2k = input_get_drvdata(dev); |
1da177e4 LT |
221 | |
222 | gameport_start_polling(gf2k->gameport); | |
223 | return 0; | |
224 | } | |
225 | ||
226 | static void gf2k_close(struct input_dev *dev) | |
227 | { | |
8715c1cf | 228 | struct gf2k *gf2k = input_get_drvdata(dev); |
1da177e4 LT |
229 | |
230 | gameport_stop_polling(gf2k->gameport); | |
231 | } | |
232 | ||
233 | /* | |
234 | * gf2k_connect() probes for Genius id joysticks. | |
235 | */ | |
236 | ||
237 | static int gf2k_connect(struct gameport *gameport, struct gameport_driver *drv) | |
238 | { | |
239 | struct gf2k *gf2k; | |
17dd3f0f | 240 | struct input_dev *input_dev; |
1da177e4 LT |
241 | unsigned char data[GF2K_LENGTH]; |
242 | int i, err; | |
243 | ||
17dd3f0f DT |
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 | } | |
1da177e4 LT |
250 | |
251 | gf2k->gameport = gameport; | |
17dd3f0f | 252 | gf2k->dev = input_dev; |
1da177e4 LT |
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 | |
abf2a117 | 279 | if ((gf2k->id != (GB(19,2,0) | GB(15,3,2) | GB(12,3,5))) && |
1da177e4 LT |
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 | ||
10ca4c0a | 298 | snprintf(gf2k->phys, sizeof(gf2k->phys), "%s/input0", gameport->phys); |
1da177e4 LT |
299 | |
300 | gf2k->length = gf2k_lens[gf2k->id]; | |
301 | ||
17dd3f0f DT |
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; | |
935e658e | 308 | input_dev->dev.parent = &gameport->dev; |
8715c1cf DT |
309 | |
310 | input_set_drvdata(input_dev, gf2k); | |
1da177e4 | 311 | |
17dd3f0f DT |
312 | input_dev->open = gf2k_open; |
313 | input_dev->close = gf2k_close; | |
8715c1cf | 314 | |
7b19ada2 | 315 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(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 | 319 | |
987a6c02 DM |
320 | for (i = 0; i < gf2k_hats[gf2k->id]; i++) |
321 | input_set_abs_params(input_dev, ABS_HAT0X + i, -1, 1, 0, 0); | |
1da177e4 LT |
322 | |
323 | for (i = 0; i < gf2k_joys[gf2k->id]; i++) | |
17dd3f0f | 324 | set_bit(gf2k_btn_joy[i], input_dev->keybit); |
1da177e4 LT |
325 | |
326 | for (i = 0; i < gf2k_pads[gf2k->id]; i++) | |
17dd3f0f | 327 | set_bit(gf2k_btn_pad[i], input_dev->keybit); |
1da177e4 LT |
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++) { | |
987a6c02 DM |
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); | |
1da177e4 LT |
341 | } |
342 | ||
127278ce DT |
343 | err = input_register_device(gf2k->dev); |
344 | if (err) | |
345 | goto fail2; | |
1da177e4 LT |
346 | |
347 | return 0; | |
348 | ||
17dd3f0f DT |
349 | fail2: gameport_close(gameport); |
350 | fail1: gameport_set_drvdata(gameport, NULL); | |
351 | input_free_device(input_dev); | |
1da177e4 LT |
352 | kfree(gf2k); |
353 | return err; | |
354 | } | |
355 | ||
356 | static void gf2k_disconnect(struct gameport *gameport) | |
357 | { | |
358 | struct gf2k *gf2k = gameport_get_drvdata(gameport); | |
359 | ||
17dd3f0f | 360 | input_unregister_device(gf2k->dev); |
1da177e4 LT |
361 | gameport_close(gameport); |
362 | gameport_set_drvdata(gameport, NULL); | |
363 | kfree(gf2k); | |
364 | } | |
365 | ||
366 | static 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 | ||
98a84131 | 375 | module_gameport_driver(gf2k_drv); |