mirror of https://gitee.com/openkylin/linux.git
327 lines
8.0 KiB
C
327 lines
8.0 KiB
C
/*
|
|
* $Id: turbografx.c,v 1.14 2002/01/22 20:30:39 vojtech Exp $
|
|
*
|
|
* Copyright (c) 1998-2001 Vojtech Pavlik
|
|
*
|
|
* Based on the work of:
|
|
* Steffen Schwenke
|
|
*/
|
|
|
|
/*
|
|
* TurboGraFX parallel port interface driver for Linux.
|
|
*/
|
|
|
|
/*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* Should you need to contact me, the author, you can do so either by
|
|
* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
|
|
* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/parport.h>
|
|
#include <linux/input.h>
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/init.h>
|
|
#include <linux/mutex.h>
|
|
|
|
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
|
|
MODULE_DESCRIPTION("TurboGraFX parallel port interface driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
#define TGFX_MAX_PORTS 3
|
|
#define TGFX_MAX_DEVICES 7
|
|
|
|
struct tgfx_config {
|
|
int args[TGFX_MAX_DEVICES + 1];
|
|
unsigned int nargs;
|
|
};
|
|
|
|
static struct tgfx_config tgfx_cfg[TGFX_MAX_PORTS] __initdata;
|
|
|
|
module_param_array_named(map, tgfx_cfg[0].args, int, &tgfx_cfg[0].nargs, 0);
|
|
MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<js1>,<js2>,..<js7>");
|
|
module_param_array_named(map2, tgfx_cfg[1].args, int, &tgfx_cfg[1].nargs, 0);
|
|
MODULE_PARM_DESC(map2, "Describes second set of devices");
|
|
module_param_array_named(map3, tgfx_cfg[2].args, int, &tgfx_cfg[2].nargs, 0);
|
|
MODULE_PARM_DESC(map3, "Describes third set of devices");
|
|
|
|
#define TGFX_REFRESH_TIME HZ/100 /* 10 ms */
|
|
|
|
#define TGFX_TRIGGER 0x08
|
|
#define TGFX_UP 0x10
|
|
#define TGFX_DOWN 0x20
|
|
#define TGFX_LEFT 0x40
|
|
#define TGFX_RIGHT 0x80
|
|
|
|
#define TGFX_THUMB 0x02
|
|
#define TGFX_THUMB2 0x04
|
|
#define TGFX_TOP 0x01
|
|
#define TGFX_TOP2 0x08
|
|
|
|
static int tgfx_buttons[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2 };
|
|
|
|
static struct tgfx {
|
|
struct pardevice *pd;
|
|
struct timer_list timer;
|
|
struct input_dev *dev[TGFX_MAX_DEVICES];
|
|
char name[TGFX_MAX_DEVICES][64];
|
|
char phys[TGFX_MAX_DEVICES][32];
|
|
int sticks;
|
|
int used;
|
|
struct mutex sem;
|
|
} *tgfx_base[TGFX_MAX_PORTS];
|
|
|
|
/*
|
|
* tgfx_timer() reads and analyzes TurboGraFX joystick data.
|
|
*/
|
|
|
|
static void tgfx_timer(unsigned long private)
|
|
{
|
|
struct tgfx *tgfx = (void *) private;
|
|
struct input_dev *dev;
|
|
int data1, data2, i;
|
|
|
|
for (i = 0; i < 7; i++)
|
|
if (tgfx->sticks & (1 << i)) {
|
|
|
|
dev = tgfx->dev[i];
|
|
|
|
parport_write_data(tgfx->pd->port, ~(1 << i));
|
|
data1 = parport_read_status(tgfx->pd->port) ^ 0x7f;
|
|
data2 = parport_read_control(tgfx->pd->port) ^ 0x04; /* CAVEAT parport */
|
|
|
|
input_report_abs(dev, ABS_X, !!(data1 & TGFX_RIGHT) - !!(data1 & TGFX_LEFT));
|
|
input_report_abs(dev, ABS_Y, !!(data1 & TGFX_DOWN ) - !!(data1 & TGFX_UP ));
|
|
|
|
input_report_key(dev, BTN_TRIGGER, (data1 & TGFX_TRIGGER));
|
|
input_report_key(dev, BTN_THUMB, (data2 & TGFX_THUMB ));
|
|
input_report_key(dev, BTN_THUMB2, (data2 & TGFX_THUMB2 ));
|
|
input_report_key(dev, BTN_TOP, (data2 & TGFX_TOP ));
|
|
input_report_key(dev, BTN_TOP2, (data2 & TGFX_TOP2 ));
|
|
|
|
input_sync(dev);
|
|
}
|
|
|
|
mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
|
|
}
|
|
|
|
static int tgfx_open(struct input_dev *dev)
|
|
{
|
|
struct tgfx *tgfx = input_get_drvdata(dev);
|
|
int err;
|
|
|
|
err = mutex_lock_interruptible(&tgfx->sem);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!tgfx->used++) {
|
|
parport_claim(tgfx->pd);
|
|
parport_write_control(tgfx->pd->port, 0x04);
|
|
mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
|
|
}
|
|
|
|
mutex_unlock(&tgfx->sem);
|
|
return 0;
|
|
}
|
|
|
|
static void tgfx_close(struct input_dev *dev)
|
|
{
|
|
struct tgfx *tgfx = input_get_drvdata(dev);
|
|
|
|
mutex_lock(&tgfx->sem);
|
|
if (!--tgfx->used) {
|
|
del_timer_sync(&tgfx->timer);
|
|
parport_write_control(tgfx->pd->port, 0x00);
|
|
parport_release(tgfx->pd);
|
|
}
|
|
mutex_unlock(&tgfx->sem);
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* tgfx_probe() probes for tg gamepads.
|
|
*/
|
|
|
|
static struct tgfx __init *tgfx_probe(int parport, int *n_buttons, int n_devs)
|
|
{
|
|
struct tgfx *tgfx;
|
|
struct input_dev *input_dev;
|
|
struct parport *pp;
|
|
struct pardevice *pd;
|
|
int i, j;
|
|
int err;
|
|
|
|
pp = parport_find_number(parport);
|
|
if (!pp) {
|
|
printk(KERN_ERR "turbografx.c: no such parport\n");
|
|
err = -EINVAL;
|
|
goto err_out;
|
|
}
|
|
|
|
pd = parport_register_device(pp, "turbografx", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
|
|
if (!pd) {
|
|
printk(KERN_ERR "turbografx.c: parport busy already - lp.o loaded?\n");
|
|
err = -EBUSY;
|
|
goto err_put_pp;
|
|
}
|
|
|
|
tgfx = kzalloc(sizeof(struct tgfx), GFP_KERNEL);
|
|
if (!tgfx) {
|
|
printk(KERN_ERR "turbografx.c: Not enough memory\n");
|
|
err = -ENOMEM;
|
|
goto err_unreg_pardev;
|
|
}
|
|
|
|
mutex_init(&tgfx->sem);
|
|
tgfx->pd = pd;
|
|
init_timer(&tgfx->timer);
|
|
tgfx->timer.data = (long) tgfx;
|
|
tgfx->timer.function = tgfx_timer;
|
|
|
|
for (i = 0; i < n_devs; i++) {
|
|
if (n_buttons[i] < 1)
|
|
continue;
|
|
|
|
if (n_buttons[i] > 6) {
|
|
printk(KERN_ERR "turbografx.c: Invalid number of buttons %d\n", n_buttons[i]);
|
|
err = -EINVAL;
|
|
goto err_unreg_devs;
|
|
}
|
|
|
|
tgfx->dev[i] = input_dev = input_allocate_device();
|
|
if (!input_dev) {
|
|
printk(KERN_ERR "turbografx.c: Not enough memory for input device\n");
|
|
err = -ENOMEM;
|
|
goto err_unreg_devs;
|
|
}
|
|
|
|
tgfx->sticks |= (1 << i);
|
|
snprintf(tgfx->name[i], sizeof(tgfx->name[i]),
|
|
"TurboGraFX %d-button Multisystem joystick", n_buttons[i]);
|
|
snprintf(tgfx->phys[i], sizeof(tgfx->phys[i]),
|
|
"%s/input%d", tgfx->pd->port->name, i);
|
|
|
|
input_dev->name = tgfx->name[i];
|
|
input_dev->phys = tgfx->phys[i];
|
|
input_dev->id.bustype = BUS_PARPORT;
|
|
input_dev->id.vendor = 0x0003;
|
|
input_dev->id.product = n_buttons[i];
|
|
input_dev->id.version = 0x0100;
|
|
|
|
input_set_drvdata(input_dev, tgfx);
|
|
|
|
input_dev->open = tgfx_open;
|
|
input_dev->close = tgfx_close;
|
|
|
|
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
|
|
input_set_abs_params(input_dev, ABS_X, -1, 1, 0, 0);
|
|
input_set_abs_params(input_dev, ABS_Y, -1, 1, 0, 0);
|
|
|
|
for (j = 0; j < n_buttons[i]; j++)
|
|
set_bit(tgfx_buttons[j], input_dev->keybit);
|
|
|
|
err = input_register_device(tgfx->dev[i]);
|
|
if (err)
|
|
goto err_free_dev;
|
|
}
|
|
|
|
if (!tgfx->sticks) {
|
|
printk(KERN_ERR "turbografx.c: No valid devices specified\n");
|
|
err = -EINVAL;
|
|
goto err_free_tgfx;
|
|
}
|
|
|
|
return tgfx;
|
|
|
|
err_free_dev:
|
|
input_free_device(tgfx->dev[i]);
|
|
err_unreg_devs:
|
|
while (--i >= 0)
|
|
if (tgfx->dev[i])
|
|
input_unregister_device(tgfx->dev[i]);
|
|
err_free_tgfx:
|
|
kfree(tgfx);
|
|
err_unreg_pardev:
|
|
parport_unregister_device(pd);
|
|
err_put_pp:
|
|
parport_put_port(pp);
|
|
err_out:
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
static void tgfx_remove(struct tgfx *tgfx)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < TGFX_MAX_DEVICES; i++)
|
|
if (tgfx->dev[i])
|
|
input_unregister_device(tgfx->dev[i]);
|
|
parport_unregister_device(tgfx->pd);
|
|
kfree(tgfx);
|
|
}
|
|
|
|
static int __init tgfx_init(void)
|
|
{
|
|
int i;
|
|
int have_dev = 0;
|
|
int err = 0;
|
|
|
|
for (i = 0; i < TGFX_MAX_PORTS; i++) {
|
|
if (tgfx_cfg[i].nargs == 0 || tgfx_cfg[i].args[0] < 0)
|
|
continue;
|
|
|
|
if (tgfx_cfg[i].nargs < 2) {
|
|
printk(KERN_ERR "turbografx.c: at least one joystick must be specified\n");
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
tgfx_base[i] = tgfx_probe(tgfx_cfg[i].args[0],
|
|
tgfx_cfg[i].args + 1,
|
|
tgfx_cfg[i].nargs - 1);
|
|
if (IS_ERR(tgfx_base[i])) {
|
|
err = PTR_ERR(tgfx_base[i]);
|
|
break;
|
|
}
|
|
|
|
have_dev = 1;
|
|
}
|
|
|
|
if (err) {
|
|
while (--i >= 0)
|
|
if (tgfx_base[i])
|
|
tgfx_remove(tgfx_base[i]);
|
|
return err;
|
|
}
|
|
|
|
return have_dev ? 0 : -ENODEV;
|
|
}
|
|
|
|
static void __exit tgfx_exit(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < TGFX_MAX_PORTS; i++)
|
|
if (tgfx_base[i])
|
|
tgfx_remove(tgfx_base[i]);
|
|
}
|
|
|
|
module_init(tgfx_init);
|
|
module_exit(tgfx_exit);
|