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

• Lines: 316
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.0-test1/linux/drivers/char/joystick/joy-analog.c
• Orig date: Wed Dec 8 14:11:26 1999

diff -u --recursive --new-file v2.4.0-test1/linux/drivers/char/joystick/joy-analog.c linux/drivers/char/joystick/joy-analog.c
@@ -1,315 +0,0 @@
-/*
- *  joy-analog.c  Version 1.2
- *
- *  Copyright (c) 1996-1999 Vojtech Pavlik
- *
- *  Sponsored by SuSE
- */
-
-/*
- * This is a module for the Linux joystick driver, supporting
- * up to two analog (or CHF/FCS) joysticks on a single joystick port.
- */
-
-/*
- * 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@suse.cz>, or by paper mail:
- * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
- */
-
-#include <asm/io.h>
-#include <asm/param.h>
-#include <asm/system.h>
-#include <linux/config.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/joystick.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/init.h>
-
-#define JS_AN_MAX_TIME		3000	/* 3 ms */
-#define JS_AN_LOOP_TIME		2000	/* 2 t */
-
-static int js_an_port_list[] __initdata = {0x201, 0};
-static struct js_port* js_an_port __initdata = NULL;
-
-MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
-MODULE_PARM(js_an, "2-24i");
-
-static int __initdata js_an[] = { -1,0,0,-1,0,0,-1,0,0,-1,0,0,-1,0,0,-1,0,0,-1,0,0,-1,0,0 };
-
-#include "joy-analog.h"
-
-struct js_ax_info {
-        int io;
-	int speed;
-	int loop;
-	int timeout;
-        struct js_an_info an;
-};
-
-/*
- * Time macros.
- */
-
-#ifdef __i386__
-#ifdef CONFIG_X86_TSC
-#define GET_TIME(x)	__asm__ __volatile__ ( "rdtsc" : "=a" (x) : : "dx" )
-#define DELTA(x,y)	((x)-(y))
-#define TIME_NAME "TSC"
-#else
-#define GET_TIME(x)	do { outb(0, 0x43); x = inb(0x40); x |= inb(0x40) << 8; } while (0)
-#define DELTA(x,y)	((y)-(x)+((y)<(x)?1193180L/HZ:0))
-#define TIME_NAME "PIT"
-#endif
-#elif __alpha__
-#define GET_TIME(x)	__asm__ __volatile__ ( "rpcc %0" : "=r" (x) )
-#define DELTA(x,y)	((x)-(y))
-#define TIME_NAME "PCC"
-#endif
-
-#ifndef GET_TIME
-#define FAKE_TIME
-static unsigned long js_an_faketime = 0;
-#define GET_TIME(x)     do { x = js_an_faketime++; } while(0)
-#define DELTA(x,y)	((x)-(y))
-#define TIME_NAME "Unreliable"
-#endif
-
-/*
- * js_an_read() reads analog joystick data.
- */
-
-static int js_an_read(void *xinfo, int **axes, int **buttons)
-{
-	struct js_ax_info *info = xinfo;
-	struct js_an_info *an = &info->an;
-	int io = info->io;
-	unsigned long flags;
-	unsigned char buf[4];
-	unsigned int time[4];
-	unsigned char u, v, w;
-	unsigned int p, q, r, s, t;
-	int i, j;
-
-	an->buttons = ~inb(io) >> 4;
-
-	i = 0;
-	w = ((an->mask[0] | an->mask[1]) & JS_AN_AXES_STD) | (an->extensions & JS_AN_HAT_FCS)
-	  | ((an->extensions & JS_AN_BUTTONS_PXY_XY) >> 2) | ((an->extensions & JS_AN_BUTTONS_PXY_UV) >> 4);
-	p = info->loop;
-	q = info->timeout;
-	
-	__save_flags(flags);
-	__cli();
-	outb(0xff,io);
-	GET_TIME(r);
-	__restore_flags(flags);
-	t = r;
-	v = w;
-	do {
-		s = t;
-		u = v;
-		__cli();
-		v = inb(io) & w;
-		GET_TIME(t);
-		__restore_flags(flags);
-		if ((u ^ v) && (DELTA(t,s) < p)) {
-			time[i] = t;
-			buf[i] = u ^ v;
-			i++;
-		}
-	} while (v && (i < 4) && (DELTA(t,r) < q));
-
-	v <<= 4;
-
-	for (--i; i >= 0; i--) {
-		v |= buf[i];
-		for (j = 0; j < 4; j++)
-			if (buf[i] & (1 << j)) an->axes[j] = (DELTA(time[i],r) << 10) / info->speed;
-	}
-
-	js_an_decode(an, axes, buttons);
-
-	return -(v != w);
-}
-
-/*
- * js_an_open() is a callback from the file open routine.
- */
-
-static int js_an_open(struct js_dev *jd)
-{
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-/*
- * js_an_close() is a callback from the file release routine.
- */
-
-static int js_an_close(struct js_dev *jd)
-{
-	MOD_DEC_USE_COUNT;
-	return 0;
-}
-
-/*
- * js_an_calibrate_timer() calibrates the timer and computes loop
- * and timeout values for a joystick port.
- */
-
-static void __init js_an_calibrate_timer(struct js_ax_info *info)
-{
-	unsigned int i, t, tx, t1, t2, t3;
-	unsigned long flags;
-	int io = info->io;
-
-	save_flags(flags);
-	cli();
-	GET_TIME(t1);
-#ifdef FAKE_TIME
-	js_an_faketime += 830;
-#endif
-	udelay(1000);
-	GET_TIME(t2);
-	GET_TIME(t3);
-	restore_flags(flags);
-
-	info->speed = DELTA(t2, t1) - DELTA(t3, t2);
-
-	tx = 1 << 30;
-
-	for(i = 0; i < 50; i++) {
-		save_flags(flags);
-		cli();
-		GET_TIME(t1);
-		for(t = 0; t < 50; t++) { inb(io); GET_TIME(t2); }
-		GET_TIME(t3);
-		restore_flags(flags);
-		udelay(i);
-		if ((t = DELTA(t2,t1) - DELTA(t3,t2)) < tx) tx = t;
-	}
-
-        info->loop = (JS_AN_LOOP_TIME * t) / 50000;
-	info->timeout = (JS_AN_MAX_TIME * info->speed) / 1000;
-}
-
-/*
- * js_an_probe() probes for analog joysticks.
- */
-
-static struct js_port __init *js_an_probe(int io, int mask0, int mask1, struct js_port *port)
-{
-	struct js_ax_info info, *ax;
-	int i, numdev;
-	unsigned char u;
-
-	if (io < 0) return port;
-
-	if (check_region(io, 1)) return port;
-
-	outb(0xff,io);
-	u = inb(io);
-	udelay(JS_AN_MAX_TIME);
-	u = (inb(io) ^ u) & u;
-
-	if (!u) return port;
-	if (u & 0xf0) return port;
-
-	if ((numdev = js_an_probe_devs(&info.an, u, mask0, mask1, port)) <= 0)
-		return port;
-
-	info.io = io;
-	js_an_calibrate_timer(&info);
-
-	request_region(info.io, 1, "joystick (analog)");
-	port = js_register_port(port, &info, numdev, sizeof(struct js_ax_info), js_an_read);
-	ax = port->info;	
-
-	for (i = 0; i < numdev; i++)
-		printk(KERN_INFO "js%d: %s at %#x ["TIME_NAME" timer, %d %sHz clock, %d ns res]\n",
-			js_register_device(port, i, js_an_axes(i, &ax->an), js_an_buttons(i, &ax->an),
-				js_an_name(i, &ax->an), js_an_open, js_an_close),
-			js_an_name(i, &ax->an),
-			ax->io,
-			ax->speed > 10000 ? (ax->speed + 800) / 1000 : ax->speed,
-			ax->speed > 10000 ? "M" : "k",
-			ax->loop * 1000000000 / JS_AN_LOOP_TIME / ax->speed);
-
-	js_an_read(ax, port->axes, port->buttons);
-	js_an_init_corr(&ax->an, port->axes, port->corr, 8);
-
-	return port;
-}
-
-#ifndef MODULE
-int __init js_an_setup(SETUP_PARAM)
-{
-	int i;
-	SETUP_PARSE(24);
-	for (i = 0; i <= ints[0] && i < 24; i++) js_an[i] = ints[i+1];
-	return 1;
-}
-__setup("js_an=", js_an_setup);
-#endif
-
-#ifdef MODULE
-int init_module(void)
-#else
-int __init js_an_init(void)
-#endif
-{
-	int i;
-
-	if (js_an[0] >= 0) {
-		for (i = 0; (js_an[i*3] >= 0) && i < 8; i++)
-			js_an_port = js_an_probe(js_an[i*3], js_an[i*3+1], js_an[i*3+2], js_an_port);
-	} else {
-		for (i = 0; js_an_port_list[i]; i++)
-			js_an_port = js_an_probe(js_an_port_list[i], 0, 0, js_an_port);
-	}
-	if (js_an_port) return 0;
-
-#ifdef MODULE
-	printk(KERN_WARNING "joy-analog: no joysticks found\n");
-#endif
-
-	return -ENODEV;
-}
-
-#ifdef MODULE
-void cleanup_module(void)
-{
-	int i;
-	struct js_ax_info *info;
-
-	while (js_an_port) {
-		for (i = 0; i < js_an_port->ndevs; i++)
-			if (js_an_port->devs[i])
-				js_unregister_device(js_an_port->devs[i]);
-		info = js_an_port->info;
-		release_region(info->io, 1);
-		js_an_port = js_unregister_port(js_an_port);
-	}
-
-}
-#endif