mirror of https://gitee.com/openkylin/linux.git
146 lines
3.2 KiB
C
146 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (c) 1996-2001 Vojtech Pavlik
|
|
*/
|
|
|
|
/*
|
|
* This is just a very simple driver that can dump the data
|
|
* out of the joystick port into the syslog ...
|
|
*/
|
|
|
|
/*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/gameport.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/slab.h>
|
|
|
|
#define DRIVER_DESC "Gameport data dumper module"
|
|
|
|
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
#define BUF_SIZE 256
|
|
|
|
struct joydump {
|
|
unsigned int time;
|
|
unsigned char data;
|
|
};
|
|
|
|
static int joydump_connect(struct gameport *gameport, struct gameport_driver *drv)
|
|
{
|
|
struct joydump *buf; /* all entries */
|
|
struct joydump *dump, *prev; /* one entry each */
|
|
int axes[4], buttons;
|
|
int i, j, t, timeout;
|
|
unsigned long flags;
|
|
unsigned char u;
|
|
|
|
printk(KERN_INFO "joydump: ,------------------ START ----------------.\n");
|
|
printk(KERN_INFO "joydump: | Dumping: %30s |\n", gameport->phys);
|
|
printk(KERN_INFO "joydump: | Speed: %28d kHz |\n", gameport->speed);
|
|
|
|
if (gameport_open(gameport, drv, GAMEPORT_MODE_RAW)) {
|
|
|
|
printk(KERN_INFO "joydump: | Raw mode not available - trying cooked. |\n");
|
|
|
|
if (gameport_open(gameport, drv, GAMEPORT_MODE_COOKED)) {
|
|
|
|
printk(KERN_INFO "joydump: | Cooked not available either. Failing. |\n");
|
|
printk(KERN_INFO "joydump: `------------------- END -----------------'\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
gameport_cooked_read(gameport, axes, &buttons);
|
|
|
|
for (i = 0; i < 4; i++)
|
|
printk(KERN_INFO "joydump: | Axis %d: %4d. |\n", i, axes[i]);
|
|
printk(KERN_INFO "joydump: | Buttons %02x. |\n", buttons);
|
|
printk(KERN_INFO "joydump: `------------------- END -----------------'\n");
|
|
}
|
|
|
|
timeout = gameport_time(gameport, 10000); /* 10 ms */
|
|
|
|
buf = kmalloc_array(BUF_SIZE, sizeof(struct joydump), GFP_KERNEL);
|
|
if (!buf) {
|
|
printk(KERN_INFO "joydump: no memory for testing\n");
|
|
goto jd_end;
|
|
}
|
|
dump = buf;
|
|
t = 0;
|
|
i = 1;
|
|
|
|
local_irq_save(flags);
|
|
|
|
u = gameport_read(gameport);
|
|
|
|
dump->data = u;
|
|
dump->time = t;
|
|
dump++;
|
|
|
|
gameport_trigger(gameport);
|
|
|
|
while (i < BUF_SIZE && t < timeout) {
|
|
|
|
dump->data = gameport_read(gameport);
|
|
|
|
if (dump->data ^ u) {
|
|
u = dump->data;
|
|
dump->time = t;
|
|
i++;
|
|
dump++;
|
|
}
|
|
t++;
|
|
}
|
|
|
|
local_irq_restore(flags);
|
|
|
|
/*
|
|
* Dump data.
|
|
*/
|
|
|
|
t = i;
|
|
dump = buf;
|
|
prev = dump;
|
|
|
|
printk(KERN_INFO "joydump: >------------------ DATA -----------------<\n");
|
|
printk(KERN_INFO "joydump: | index: %3d delta: %3d us data: ", 0, 0);
|
|
for (j = 7; j >= 0; j--)
|
|
printk("%d", (dump->data >> j) & 1);
|
|
printk(" |\n");
|
|
dump++;
|
|
|
|
for (i = 1; i < t; i++, dump++, prev++) {
|
|
printk(KERN_INFO "joydump: | index: %3d delta: %3d us data: ",
|
|
i, dump->time - prev->time);
|
|
for (j = 7; j >= 0; j--)
|
|
printk("%d", (dump->data >> j) & 1);
|
|
printk(" |\n");
|
|
}
|
|
kfree(buf);
|
|
|
|
jd_end:
|
|
printk(KERN_INFO "joydump: `------------------- END -----------------'\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void joydump_disconnect(struct gameport *gameport)
|
|
{
|
|
gameport_close(gameport);
|
|
}
|
|
|
|
static struct gameport_driver joydump_drv = {
|
|
.driver = {
|
|
.name = "joydump",
|
|
},
|
|
.description = DRIVER_DESC,
|
|
.connect = joydump_connect,
|
|
.disconnect = joydump_disconnect,
|
|
};
|
|
|
|
module_gameport_driver(joydump_drv);
|