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