diff options
Diffstat (limited to 'drivers/input/joystick/joydump.c')
| -rw-r--r-- | drivers/input/joystick/joydump.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/drivers/input/joystick/joydump.c b/drivers/input/joystick/joydump.c new file mode 100644 index 000000000..d1c6e4846 --- /dev/null +++ b/drivers/input/joystick/joydump.c @@ -0,0 +1,161 @@ +/* + * 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 ... + */ + +/* + * 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/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(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); |