1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34#include <linux/kernel.h>
35#include <linux/slab.h>
36#include <linux/module.h>
37#include <linux/delay.h>
38#include <linux/init.h>
39#include <linux/gameport.h>
40#include <linux/input.h>
41#include <linux/jiffies.h>
42
43#define DRIVER_DESC "InterAct digital joystick driver"
44
45MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
46MODULE_DESCRIPTION(DRIVER_DESC);
47MODULE_LICENSE("GPL");
48
49#define INTERACT_MAX_START 600
50#define INTERACT_MAX_STROBE 60
51#define INTERACT_MAX_LENGTH 32
52
53#define INTERACT_TYPE_HHFX 0
54#define INTERACT_TYPE_PP8D 1
55
56struct interact {
57 struct gameport *gameport;
58 struct input_dev *dev;
59 int bads;
60 int reads;
61 unsigned char type;
62 unsigned char length;
63 char phys[32];
64};
65
66static short interact_abs_hhfx[] =
67 { ABS_RX, ABS_RY, ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y, -1 };
68static short interact_abs_pp8d[] =
69 { ABS_X, ABS_Y, -1 };
70
71static short interact_btn_hhfx[] =
72 { BTN_TR, BTN_X, BTN_Y, BTN_Z, BTN_A, BTN_B, BTN_C, BTN_TL, BTN_TL2, BTN_TR2, BTN_MODE, BTN_SELECT, -1 };
73static short interact_btn_pp8d[] =
74 { BTN_C, BTN_TL, BTN_TR, BTN_A, BTN_B, BTN_Y, BTN_Z, BTN_X, -1 };
75
76struct interact_type {
77 int id;
78 short *abs;
79 short *btn;
80 char *name;
81 unsigned char length;
82 unsigned char b8;
83};
84
85static struct interact_type interact_type[] = {
86 { 0x6202, interact_abs_hhfx, interact_btn_hhfx, "InterAct HammerHead/FX", 32, 4 },
87 { 0x53f8, interact_abs_pp8d, interact_btn_pp8d, "InterAct ProPad 8 Digital", 16, 0 },
88 { 0 }};
89
90
91
92
93
94static int interact_read_packet(struct gameport *gameport, int length, u32 *data)
95{
96 unsigned long flags;
97 unsigned char u, v;
98 unsigned int t, s;
99 int i;
100
101 i = 0;
102 data[0] = data[1] = data[2] = 0;
103 t = gameport_time(gameport, INTERACT_MAX_START);
104 s = gameport_time(gameport, INTERACT_MAX_STROBE);
105
106 local_irq_save(flags);
107 gameport_trigger(gameport);
108 v = gameport_read(gameport);
109
110 while (t > 0 && i < length) {
111 t--;
112 u = v; v = gameport_read(gameport);
113 if (v & ~u & 0x40) {
114 data[0] = (data[0] << 1) | ((v >> 4) & 1);
115 data[1] = (data[1] << 1) | ((v >> 5) & 1);
116 data[2] = (data[2] << 1) | ((v >> 7) & 1);
117 i++;
118 t = s;
119 }
120 }
121
122 local_irq_restore(flags);
123
124 return i;
125}
126
127
128
129
130
131static void interact_poll(struct gameport *gameport)
132{
133 struct interact *interact = gameport_get_drvdata(gameport);
134 struct input_dev *dev = interact->dev;
135 u32 data[3];
136 int i;
137
138 interact->reads++;
139
140 if (interact_read_packet(interact->gameport, interact->length, data) < interact->length) {
141 interact->bads++;
142 } else {
143
144 for (i = 0; i < 3; i++)
145 data[i] <<= INTERACT_MAX_LENGTH - interact->length;
146
147 switch (interact->type) {
148
149 case INTERACT_TYPE_HHFX:
150
151 for (i = 0; i < 4; i++)
152 input_report_abs(dev, interact_abs_hhfx[i], (data[i & 1] >> ((i >> 1) << 3)) & 0xff);
153
154 for (i = 0; i < 2; i++)
155 input_report_abs(dev, ABS_HAT0Y - i,
156 ((data[1] >> ((i << 1) + 17)) & 1) - ((data[1] >> ((i << 1) + 16)) & 1));
157
158 for (i = 0; i < 8; i++)
159 input_report_key(dev, interact_btn_hhfx[i], (data[0] >> (i + 16)) & 1);
160
161 for (i = 0; i < 4; i++)
162 input_report_key(dev, interact_btn_hhfx[i + 8], (data[1] >> (i + 20)) & 1);
163
164 break;
165
166 case INTERACT_TYPE_PP8D:
167
168 for (i = 0; i < 2; i++)
169 input_report_abs(dev, interact_abs_pp8d[i],
170 ((data[0] >> ((i << 1) + 20)) & 1) - ((data[0] >> ((i << 1) + 21)) & 1));
171
172 for (i = 0; i < 8; i++)
173 input_report_key(dev, interact_btn_pp8d[i], (data[1] >> (i + 16)) & 1);
174
175 break;
176 }
177 }
178
179 input_sync(dev);
180}
181
182
183
184
185
186static int interact_open(struct input_dev *dev)
187{
188 struct interact *interact = input_get_drvdata(dev);
189
190 gameport_start_polling(interact->gameport);
191 return 0;
192}
193
194
195
196
197
198static void interact_close(struct input_dev *dev)
199{
200 struct interact *interact = input_get_drvdata(dev);
201
202 gameport_stop_polling(interact->gameport);
203}
204
205
206
207
208
209static int interact_connect(struct gameport *gameport, struct gameport_driver *drv)
210{
211 struct interact *interact;
212 struct input_dev *input_dev;
213 __u32 data[3];
214 int i, t;
215 int err;
216
217 interact = kzalloc(sizeof(struct interact), GFP_KERNEL);
218 input_dev = input_allocate_device();
219 if (!interact || !input_dev) {
220 err = -ENOMEM;
221 goto fail1;
222 }
223
224 interact->gameport = gameport;
225 interact->dev = input_dev;
226
227 gameport_set_drvdata(gameport, interact);
228
229 err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
230 if (err)
231 goto fail1;
232
233 i = interact_read_packet(gameport, INTERACT_MAX_LENGTH * 2, data);
234
235 if (i != 32 || (data[0] >> 24) != 0x0c || (data[1] >> 24) != 0x02) {
236 err = -ENODEV;
237 goto fail2;
238 }
239
240 for (i = 0; interact_type[i].length; i++)
241 if (interact_type[i].id == (data[2] >> 16))
242 break;
243
244 if (!interact_type[i].length) {
245 printk(KERN_WARNING "interact.c: Unknown joystick on %s. [len %d d0 %08x d1 %08x i2 %08x]\n",
246 gameport->phys, i, data[0], data[1], data[2]);
247 err = -ENODEV;
248 goto fail2;
249 }
250
251 gameport_set_poll_handler(gameport, interact_poll);
252 gameport_set_poll_interval(gameport, 20);
253
254 snprintf(interact->phys, sizeof(interact->phys), "%s/input0", gameport->phys);
255
256 interact->type = i;
257 interact->length = interact_type[i].length;
258
259 input_dev->name = interact_type[i].name;
260 input_dev->phys = interact->phys;
261 input_dev->id.bustype = BUS_GAMEPORT;
262 input_dev->id.vendor = GAMEPORT_ID_VENDOR_INTERACT;
263 input_dev->id.product = interact_type[i].id;
264 input_dev->id.version = 0x0100;
265 input_dev->dev.parent = &gameport->dev;
266
267 input_set_drvdata(input_dev, interact);
268
269 input_dev->open = interact_open;
270 input_dev->close = interact_close;
271
272 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
273
274 for (i = 0; (t = interact_type[interact->type].abs[i]) >= 0; i++) {
275 set_bit(t, input_dev->absbit);
276 if (i < interact_type[interact->type].b8) {
277 input_dev->absmin[t] = 0;
278 input_dev->absmax[t] = 255;
279 } else {
280 input_dev->absmin[t] = -1;
281 input_dev->absmax[t] = 1;
282 }
283 }
284
285 for (i = 0; (t = interact_type[interact->type].btn[i]) >= 0; i++)
286 set_bit(t, input_dev->keybit);
287
288 err = input_register_device(interact->dev);
289 if (err)
290 goto fail2;
291
292 return 0;
293
294fail2: gameport_close(gameport);
295fail1: gameport_set_drvdata(gameport, NULL);
296 input_free_device(input_dev);
297 kfree(interact);
298 return err;
299}
300
301static void interact_disconnect(struct gameport *gameport)
302{
303 struct interact *interact = gameport_get_drvdata(gameport);
304
305 input_unregister_device(interact->dev);
306 gameport_close(gameport);
307 gameport_set_drvdata(gameport, NULL);
308 kfree(interact);
309}
310
311static struct gameport_driver interact_drv = {
312 .driver = {
313 .name = "interact",
314 },
315 .description = DRIVER_DESC,
316 .connect = interact_connect,
317 .disconnect = interact_disconnect,
318};
319
320static int __init interact_init(void)
321{
322 gameport_register_driver(&interact_drv);
323 return 0;
324}
325
326static void __exit interact_exit(void)
327{
328 gameport_unregister_driver(&interact_drv);
329}
330
331module_init(interact_init);
332module_exit(interact_exit);
333
