patch-2.4.0-test2 linux/drivers/char/joystick/joy-warrior.c

• Lines: 304
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.0-test1/linux/drivers/char/joystick/joy-warrior.c
• Orig date: Tue Apr 11 15:09:16 2000

diff -u --recursive --new-file v2.4.0-test1/linux/drivers/char/joystick/joy-warrior.c linux/drivers/char/joystick/joy-warrior.c
@@ -1,303 +0,0 @@
-/*
- *  joy-warrior.c  Version 0.1
- *
- *  Copyright (c) 1998 David Thompson
- *  Copyright (c) 1999 Vojtech Pavlik
- *
- *  Sponsored by SuSE
- */
-
-/*
- * This is a module for the Linux joystick driver, supporting
- * the Logitech WingMan Warrior joystick.
- */
-
-/*
- * This program is free warftware; 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@suse.cz>, or by paper mail:
- * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
- */
-
-#include <asm/io.h>
-#include <asm/system.h>
-#include <linux/errno.h>
-#include <linux/joystick.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/tty.h>
-#include <linux/init.h>
-
-/*
- * Constants.
- */
-
-#define	N_JOYSTICK_WAR		13
-#define JS_WAR_MAX_LENGTH	16
-
-/*
- * List of Warriors.
- */
-
-static struct js_port* js_war_port = NULL;
-
-static char js_war_lengths[] = { 0, 4, 12, 3, 4, 4, 0, 0 }; 
-
-/*
- * Per-Warrior data.
- */
-
-struct js_war_info {
-	struct tty_struct* tty;
-	struct js_port* port;
-	int idx;
-	int len;
-	unsigned char data[JS_WAR_MAX_LENGTH];
-	char used;
-};
-
-/*
- * js_war_process_packet() decodes packets the driver receives from the
- * Warrior. It updates the data accordingly.
- */
-
-static void js_war_process_packet(struct js_war_info* info)
-{
-	int **axes = info->port->axes;
-	int **buttons = info->port->buttons;
-	unsigned char *data = info->data;
-	int i;
-
-	if (!info->idx) return;
-
-	switch ((data[0] >> 4) & 7) {
-
-		case 1:					/* Button data */
-			if (!info->port->devs[0]) return;
-			buttons[0][0] = ((data[3] & 0xa) >> 1) | ((data[3] & 0x5) << 1);
-			return;
-		case 3:					/* XY-axis info->data */
-			if (!info->port->devs[0]) return;
-			axes[0][0] = ((data[0] & 8) << 5) - (data[2] | ((data[0] & 4) << 5));
-			axes[0][1] = (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7);
-			return;
-			break;
-		case 5:					/* Throttle, spinner, hat info->data */
-			if (!info->port->devs[0]) return;
-			axes[0][2] = (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7);
-			axes[0][3] = (data[3] & 2 ? 1 : 0) - (info->data[3] & 1 ? 1 : 0);
-			axes[0][4] = (data[3] & 8 ? 1 : 0) - (info->data[3] & 4 ? 1 : 0);
-			axes[0][5] = (data[2] | ((data[0] & 4) << 5)) - ((data[0] & 8) << 5);
-			return;
-		case 2:					/* Static status (Send !S to get one) */
-		case 4:					/* Dynamic status */
-			return;
-		default:
-			printk("joy-warrior: Unknown packet %d length %d:", (data[0] >> 4) & 7, info->idx);
-			for (i = 0; i < info->idx; i++)
-				printk(" %02x", data[i]);
-			printk("\n");
-			return;
-	}
-}
-
-/*
- * js_war_open() is a callback from the joystick device open routine.
- */
-
-static int js_war_open(struct js_dev *jd)
-{
-	struct js_war_info *info = jd->port->info;
-	info->used++;
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-/*
- * js_war_close() is a callback from the joystick device release routine.
- */
-
-static int js_war_close(struct js_dev *jd)
-{
-	struct js_war_info *info = jd->port->info;
-	if (!--info->used) {
-		js_unregister_device(jd->port->devs[0]);
-		js_war_port = js_unregister_port(jd->port);
-	}
-	MOD_DEC_USE_COUNT;
-	return 0;
-}
-
-/*
- * js_war_init_corr() initializes the correction values for the Warrior.
- */
-
-static void __init js_war_init_corr(struct js_corr **corr)
-{
-	int i;
-
-	for (i = 0; i < 6; i++) {
-		corr[0][i].type = JS_CORR_BROKEN;
-		corr[0][i].prec = 0;
-		corr[0][i].coef[0] = -8;
-		corr[0][i].coef[1] = 8;
-		corr[0][i].coef[2] = (1 << 29) / (128 - 64);
-		corr[0][i].coef[3] = (1 << 29) / (128 - 64);
-	}
-
-	corr[0][2].coef[2] = (1 << 29) / (128 - 16);
-	corr[0][2].coef[3] = (1 << 29) / (128 - 16);
-
-	for (i = 3; i < 5; i++) {
-		corr[0][i].coef[0] = 0;
-		corr[0][i].coef[1] = 0;
-		corr[0][i].coef[2] = (1 << 29);
-		corr[0][i].coef[3] = (1 << 29);
-	}
-
-	corr[0][5].prec = -1;
-	corr[0][5].coef[0] = 0;
-	corr[0][5].coef[1] = 0;
-	corr[0][5].coef[2] = (1 << 29) / 128;
-	corr[0][5].coef[3] = (1 << 29) / 128;
-}
-
-/*
- * js_war_ldisc_open() is the routine that is called upon setting our line
- * discipline on a tty.
- */
-
-static int js_war_ldisc_open(struct tty_struct *tty)
-{
-	struct js_war_info iniinfo;
-	struct js_war_info *info = &iniinfo;
-
-	MOD_INC_USE_COUNT;
-
-	info->tty = tty;
-	info->idx = 0;
-	info->len = 0;
-	info->used = 1;
-
-	js_war_port = js_register_port(js_war_port, info, 1, sizeof(struct js_war_info), NULL);
-
-	info = js_war_port->info;
-	info->port = js_war_port;
-	tty->disc_data = info;
-
-	printk(KERN_INFO "js%d: WingMan Warrior on %s%d\n",
-		js_register_device(js_war_port, 0, 6, 4, "WingMan Warrior", js_war_open, js_war_close),
-		tty->driver.name, MINOR(tty->device) - tty->driver.minor_start);
-
-	js_war_init_corr(js_war_port->corr);
-
-	return 0;
-}
-
-/*
- * js_war_ldisc_close() is the opposite of js_war_ldisc_open()
- */
-
-static void js_war_ldisc_close(struct tty_struct *tty)
-{
-	struct js_war_info* info = (struct js_war_info*) tty->disc_data;
-	if (!--info->used) {
-		js_unregister_device(info->port->devs[0]);
-		js_war_port = js_unregister_port(info->port);
-	}
-	MOD_DEC_USE_COUNT;
-}
-
-/*
- * js_war_ldisc_receive() is called by the low level driver when characters
- * are ready for us. We then buffer them for further processing, or call the
- * packet processing routine.
- */
-
-static void js_war_ldisc_receive(struct tty_struct *tty, const unsigned char *cp, char *fp, int count)
-{
-	struct js_war_info* info = (struct js_war_info*) tty->disc_data;
-	int i;
-
-	for (i = 0; i < count; i++) {
-		if (cp[i] & 0x80) {
-			if (info->idx)
-				js_war_process_packet(info);
-			info->idx = 0;
-			info->len = js_war_lengths[(cp[i] >> 4) & 7];
-		}
-
-		if (info->idx < JS_WAR_MAX_LENGTH)
-			info->data[info->idx++] = cp[i];
-
-		if (info->idx == info->len) {
-			if (info->idx)
-				js_war_process_packet(info);	
-			info->idx = 0;
-			info->len = 0;
-		}
-	}
-}
-
-/*
- * js_war_ldisc_room() reports how much room we do have for receiving data.
- * Although we in fact have infinite room, we need to specify some value
- * here, so why not the size of our packet buffer. It's big anyway.
- */
-
-static int js_war_ldisc_room(struct tty_struct *tty)
-{
-	return JS_WAR_MAX_LENGTH;
-}
-
-/*
- * The line discipline structure.
- */
-
-static struct tty_ldisc js_war_ldisc = {
-        magic:          TTY_LDISC_MAGIC,
-        name:           "warrior",
-	open:		js_war_ldisc_open,
-	close:		js_war_ldisc_close,
-	receive_buf:	js_war_ldisc_receive,
-	receive_room:	js_war_ldisc_room,
-};
-
-/*
- * The functions for inserting/removing us as a module.
- */
-
-#ifdef MODULE
-int init_module(void)
-#else
-int __init js_war_init(void)
-#endif
-{
-        if (tty_register_ldisc(N_JOYSTICK_WAR, &js_war_ldisc)) {
-                printk(KERN_ERR "joy-warrior: Error registering line discipline.\n");
-		return -ENODEV;
-	}
-
-	return  0;
-}
-
-#ifdef MODULE
-void cleanup_module(void)
-{
-	tty_register_ldisc(N_JOYSTICK_WAR, NULL);
-}
-#endif