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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - drivers/input/joystick/turbografx.c
2 * Copyright (c) 1998-2001 Vojtech Pavlik
4 * Based on the work of:
9 * TurboGraFX parallel port interface driver for Linux.
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 * Should you need to contact me, the author, you can do so either by
28 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
29 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
32 #include <linux/kernel.h>
33 #include <linux/parport.h>
34 #include <linux/input.h>
35 #include <linux/module.h>
36 #include <linux/init.h>
37 #include <linux/mutex.h>
38 #include <linux/slab.h>
40 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
41 MODULE_DESCRIPTION("TurboGraFX parallel port interface driver");
42 MODULE_LICENSE("GPL");
44 #define TGFX_MAX_PORTS 3
45 #define TGFX_MAX_DEVICES 7
48 int args
[TGFX_MAX_DEVICES
+ 1];
52 static struct tgfx_config tgfx_cfg
[TGFX_MAX_PORTS
] __initdata
;
54 module_param_array_named(map
, tgfx_cfg
[0].args
, int, &tgfx_cfg
[0].nargs
, 0);
55 MODULE_PARM_DESC(map
, "Describes first set of devices (<parport#>,<js1>,<js2>,..<js7>");
56 module_param_array_named(map2
, tgfx_cfg
[1].args
, int, &tgfx_cfg
[1].nargs
, 0);
57 MODULE_PARM_DESC(map2
, "Describes second set of devices");
58 module_param_array_named(map3
, tgfx_cfg
[2].args
, int, &tgfx_cfg
[2].nargs
, 0);
59 MODULE_PARM_DESC(map3
, "Describes third set of devices");
61 #define TGFX_REFRESH_TIME HZ/100 /* 10 ms */
63 #define TGFX_TRIGGER 0x08
65 #define TGFX_DOWN 0x20
66 #define TGFX_LEFT 0x40
67 #define TGFX_RIGHT 0x80
69 #define TGFX_THUMB 0x02
70 #define TGFX_THUMB2 0x04
72 #define TGFX_TOP2 0x08
74 static int tgfx_buttons
[] = { BTN_TRIGGER
, BTN_THUMB
, BTN_THUMB2
, BTN_TOP
, BTN_TOP2
};
78 struct timer_list timer
;
79 struct input_dev
*dev
[TGFX_MAX_DEVICES
];
80 char name
[TGFX_MAX_DEVICES
][64];
81 char phys
[TGFX_MAX_DEVICES
][32];
85 } *tgfx_base
[TGFX_MAX_PORTS
];
88 * tgfx_timer() reads and analyzes TurboGraFX joystick data.
91 static void tgfx_timer(unsigned long private)
93 struct tgfx
*tgfx
= (void *) private;
94 struct input_dev
*dev
;
97 for (i
= 0; i
< 7; i
++)
98 if (tgfx
->sticks
& (1 << i
)) {
102 parport_write_data(tgfx
->pd
->port
, ~(1 << i
));
103 data1
= parport_read_status(tgfx
->pd
->port
) ^ 0x7f;
104 data2
= parport_read_control(tgfx
->pd
->port
) ^ 0x04; /* CAVEAT parport */
106 input_report_abs(dev
, ABS_X
, !!(data1
& TGFX_RIGHT
) - !!(data1
& TGFX_LEFT
));
107 input_report_abs(dev
, ABS_Y
, !!(data1
& TGFX_DOWN
) - !!(data1
& TGFX_UP
));
109 input_report_key(dev
, BTN_TRIGGER
, (data1
& TGFX_TRIGGER
));
110 input_report_key(dev
, BTN_THUMB
, (data2
& TGFX_THUMB
));
111 input_report_key(dev
, BTN_THUMB2
, (data2
& TGFX_THUMB2
));
112 input_report_key(dev
, BTN_TOP
, (data2
& TGFX_TOP
));
113 input_report_key(dev
, BTN_TOP2
, (data2
& TGFX_TOP2
));
118 mod_timer(&tgfx
->timer
, jiffies
+ TGFX_REFRESH_TIME
);
121 static int tgfx_open(struct input_dev
*dev
)
123 struct tgfx
*tgfx
= input_get_drvdata(dev
);
126 err
= mutex_lock_interruptible(&tgfx
->sem
);
131 parport_claim(tgfx
->pd
);
132 parport_write_control(tgfx
->pd
->port
, 0x04);
133 mod_timer(&tgfx
->timer
, jiffies
+ TGFX_REFRESH_TIME
);
136 mutex_unlock(&tgfx
->sem
);
140 static void tgfx_close(struct input_dev
*dev
)
142 struct tgfx
*tgfx
= input_get_drvdata(dev
);
144 mutex_lock(&tgfx
->sem
);
146 del_timer_sync(&tgfx
->timer
);
147 parport_write_control(tgfx
->pd
->port
, 0x00);
148 parport_release(tgfx
->pd
);
150 mutex_unlock(&tgfx
->sem
);
156 * tgfx_probe() probes for tg gamepads.
159 static struct tgfx __init
*tgfx_probe(int parport
, int *n_buttons
, int n_devs
)
162 struct input_dev
*input_dev
;
164 struct pardevice
*pd
;
168 pp
= parport_find_number(parport
);
170 printk(KERN_ERR
"turbografx.c: no such parport\n");
175 pd
= parport_register_device(pp
, "turbografx", NULL
, NULL
, NULL
, PARPORT_DEV_EXCL
, NULL
);
177 printk(KERN_ERR
"turbografx.c: parport busy already - lp.o loaded?\n");
182 tgfx
= kzalloc(sizeof(struct tgfx
), GFP_KERNEL
);
184 printk(KERN_ERR
"turbografx.c: Not enough memory\n");
186 goto err_unreg_pardev
;
189 mutex_init(&tgfx
->sem
);
191 init_timer(&tgfx
->timer
);
192 tgfx
->timer
.data
= (long) tgfx
;
193 tgfx
->timer
.function
= tgfx_timer
;
195 for (i
= 0; i
< n_devs
; i
++) {
196 if (n_buttons
[i
] < 1)
199 if (n_buttons
[i
] > ARRAY_SIZE(tgfx_buttons
)) {
200 printk(KERN_ERR
"turbografx.c: Invalid number of buttons %d\n", n_buttons
[i
]);
205 tgfx
->dev
[i
] = input_dev
= input_allocate_device();
207 printk(KERN_ERR
"turbografx.c: Not enough memory for input device\n");
212 tgfx
->sticks
|= (1 << i
);
213 snprintf(tgfx
->name
[i
], sizeof(tgfx
->name
[i
]),
214 "TurboGraFX %d-button Multisystem joystick", n_buttons
[i
]);
215 snprintf(tgfx
->phys
[i
], sizeof(tgfx
->phys
[i
]),
216 "%s/input%d", tgfx
->pd
->port
->name
, i
);
218 input_dev
->name
= tgfx
->name
[i
];
219 input_dev
->phys
= tgfx
->phys
[i
];
220 input_dev
->id
.bustype
= BUS_PARPORT
;
221 input_dev
->id
.vendor
= 0x0003;
222 input_dev
->id
.product
= n_buttons
[i
];
223 input_dev
->id
.version
= 0x0100;
225 input_set_drvdata(input_dev
, tgfx
);
227 input_dev
->open
= tgfx_open
;
228 input_dev
->close
= tgfx_close
;
230 input_dev
->evbit
[0] = BIT_MASK(EV_KEY
) | BIT_MASK(EV_ABS
);
231 input_set_abs_params(input_dev
, ABS_X
, -1, 1, 0, 0);
232 input_set_abs_params(input_dev
, ABS_Y
, -1, 1, 0, 0);
234 for (j
= 0; j
< n_buttons
[i
]; j
++)
235 set_bit(tgfx_buttons
[j
], input_dev
->keybit
);
237 err
= input_register_device(tgfx
->dev
[i
]);
243 printk(KERN_ERR
"turbografx.c: No valid devices specified\n");
248 parport_put_port(pp
);
252 input_free_device(tgfx
->dev
[i
]);
256 input_unregister_device(tgfx
->dev
[i
]);
260 parport_unregister_device(pd
);
262 parport_put_port(pp
);
267 static void tgfx_remove(struct tgfx
*tgfx
)
271 for (i
= 0; i
< TGFX_MAX_DEVICES
; i
++)
273 input_unregister_device(tgfx
->dev
[i
]);
274 parport_unregister_device(tgfx
->pd
);
278 static int __init
tgfx_init(void)
284 for (i
= 0; i
< TGFX_MAX_PORTS
; i
++) {
285 if (tgfx_cfg
[i
].nargs
== 0 || tgfx_cfg
[i
].args
[0] < 0)
288 if (tgfx_cfg
[i
].nargs
< 2) {
289 printk(KERN_ERR
"turbografx.c: at least one joystick must be specified\n");
294 tgfx_base
[i
] = tgfx_probe(tgfx_cfg
[i
].args
[0],
295 tgfx_cfg
[i
].args
+ 1,
296 tgfx_cfg
[i
].nargs
- 1);
297 if (IS_ERR(tgfx_base
[i
])) {
298 err
= PTR_ERR(tgfx_base
[i
]);
308 tgfx_remove(tgfx_base
[i
]);
312 return have_dev
? 0 : -ENODEV
;
315 static void __exit
tgfx_exit(void)
319 for (i
= 0; i
< TGFX_MAX_PORTS
; i
++)
321 tgfx_remove(tgfx_base
[i
]);
324 module_init(tgfx_init
);
325 module_exit(tgfx_exit
);