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1a59d1b8e0
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
145 lines
3.2 KiB
C
145 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 1996-2001 Vojtech Pavlik
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*/
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/*
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* This is just a very simple driver that can dump the data
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* out of the joystick port into the syslog ...
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*/
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/*
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*/
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#include <linux/module.h>
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#include <linux/gameport.h>
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#define DRIVER_DESC "Gameport data dumper module"
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MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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#define BUF_SIZE 256
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struct joydump {
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unsigned int time;
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unsigned char data;
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};
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static int joydump_connect(struct gameport *gameport, struct gameport_driver *drv)
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{
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struct joydump *buf; /* all entries */
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struct joydump *dump, *prev; /* one entry each */
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int axes[4], buttons;
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int i, j, t, timeout;
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unsigned long flags;
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unsigned char u;
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printk(KERN_INFO "joydump: ,------------------ START ----------------.\n");
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printk(KERN_INFO "joydump: | Dumping: %30s |\n", gameport->phys);
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printk(KERN_INFO "joydump: | Speed: %28d kHz |\n", gameport->speed);
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if (gameport_open(gameport, drv, GAMEPORT_MODE_RAW)) {
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printk(KERN_INFO "joydump: | Raw mode not available - trying cooked. |\n");
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if (gameport_open(gameport, drv, GAMEPORT_MODE_COOKED)) {
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printk(KERN_INFO "joydump: | Cooked not available either. Failing. |\n");
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printk(KERN_INFO "joydump: `------------------- END -----------------'\n");
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return -ENODEV;
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}
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gameport_cooked_read(gameport, axes, &buttons);
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for (i = 0; i < 4; i++)
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printk(KERN_INFO "joydump: | Axis %d: %4d. |\n", i, axes[i]);
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printk(KERN_INFO "joydump: | Buttons %02x. |\n", buttons);
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printk(KERN_INFO "joydump: `------------------- END -----------------'\n");
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}
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timeout = gameport_time(gameport, 10000); /* 10 ms */
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buf = kmalloc_array(BUF_SIZE, sizeof(struct joydump), GFP_KERNEL);
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if (!buf) {
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printk(KERN_INFO "joydump: no memory for testing\n");
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goto jd_end;
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}
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dump = buf;
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t = 0;
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i = 1;
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local_irq_save(flags);
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u = gameport_read(gameport);
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dump->data = u;
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dump->time = t;
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dump++;
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gameport_trigger(gameport);
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while (i < BUF_SIZE && t < timeout) {
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dump->data = gameport_read(gameport);
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if (dump->data ^ u) {
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u = dump->data;
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dump->time = t;
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i++;
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dump++;
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}
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t++;
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}
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local_irq_restore(flags);
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/*
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* Dump data.
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*/
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t = i;
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dump = buf;
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prev = dump;
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printk(KERN_INFO "joydump: >------------------ DATA -----------------<\n");
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printk(KERN_INFO "joydump: | index: %3d delta: %3d us data: ", 0, 0);
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for (j = 7; j >= 0; j--)
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printk("%d", (dump->data >> j) & 1);
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printk(" |\n");
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dump++;
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for (i = 1; i < t; i++, dump++, prev++) {
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printk(KERN_INFO "joydump: | index: %3d delta: %3d us data: ",
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i, dump->time - prev->time);
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for (j = 7; j >= 0; j--)
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printk("%d", (dump->data >> j) & 1);
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printk(" |\n");
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}
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kfree(buf);
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jd_end:
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printk(KERN_INFO "joydump: `------------------- END -----------------'\n");
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return 0;
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}
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static void joydump_disconnect(struct gameport *gameport)
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{
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gameport_close(gameport);
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}
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static struct gameport_driver joydump_drv = {
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.driver = {
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.name = "joydump",
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},
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.description = DRIVER_DESC,
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.connect = joydump_connect,
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.disconnect = joydump_disconnect,
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};
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module_gameport_driver(joydump_drv);
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