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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143// 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_objs(struct joydump, BUF_SIZE); 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);