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

• Lines: 404
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.0-test1/linux/drivers/char/joystick/joy-gravis.c
• Orig date: Wed Dec 8 14:11:26 1999

diff -u --recursive --new-file v2.4.0-test1/linux/drivers/char/joystick/joy-gravis.c linux/drivers/char/joystick/joy-gravis.c
@@ -1,403 +0,0 @@
-/*
- *  joy-gravis.c  Version 1.2
- *
- *  Copyright (c) 1998-1999 Vojtech Pavlik
- *
- *  Sponsored by SuSE
- */
-
-/*
- * This is a module for the Linux joystick driver, supporting
- * Gravis GrIP digital joystick family.
- */
-
-/*
- * 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/system.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/joystick.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/init.h>
-
-#define JS_GR_MODE_GPP		1
-#define JS_GR_LENGTH_GPP	24
-#define JS_GR_STROBE_GPP	400
-
-#define JS_GR_MODE_XT		2
-#define JS_GR_MODE_BD		3
-#define JS_GR_LENGTH_XT		4
-#define JS_GR_STROBE_XT		200
-#define JS_GR_MAX_CHUNKS_XT	10	
-#define JS_GR_MAX_BITS_XT	30	
-
-static int js_gr_port_list[] __initdata = {0x201, 0};
-static struct js_port* js_gr_port __initdata = NULL;
-
-struct js_gr_info {
-	int io;
-	unsigned char mode[2];
-};
-
-/*
- * js_gr_gpp_read_packet() reads a Gravis GamePad Pro packet.
- */
-
-static int js_gr_gpp_read_packet(int io, int shift, unsigned int *data)
-{
-	unsigned long flags;
-	unsigned char u, v;
-	unsigned int t, p;
-	int i;
-
-	i = 0;
-	data[0] = 0;
-	p = t = JS_GR_STROBE_GPP;
-	p += JS_GR_STROBE_GPP;
-
-	__save_flags(flags);
-	__cli();
-
-	v = inb(io) >> shift;
-
-	do {
-		t--;
-		u = v; v = (inb(io) >> shift) & 3;
-		if (~v & u & 1) {
-			data[0] |= (v >> 1) << i++;
-			p = t = (p - t) << 1;
-		}
-	} while (i < JS_GR_LENGTH_GPP && t > 0);
-
-	__restore_flags(flags);
-
-	if (i < JS_GR_LENGTH_GPP) return -1;
-
-	for (i = 0; i < JS_GR_LENGTH_GPP && (data[0] & 0xfe4210) ^ 0x7c0000; i++)
-		data[0] = data[0] >> 1 | (data[0] & 1) << (JS_GR_LENGTH_GPP - 1);
-
-	return -(i == JS_GR_LENGTH_GPP);
-}
-
-/*
- * js_gr_xt_read_packet() reads a Gravis Xterminator packet.
- */
-
-static int js_gr_xt_read_packet(int io, int shift, unsigned int *data)
-{
-	unsigned int i, j, buf, crc;
-	unsigned char u, v, w;
-	unsigned long flags;
-	unsigned int t, p;
-	char status;
-
-	data[0] = data[1] = data[2] = data[3] = 0;
-	status = buf = i = j = 0;
-	p = t = JS_GR_STROBE_XT;
-	p += JS_GR_STROBE_XT;
-
-	__save_flags(flags);
-	__cli();
-
-	v = w = (inb(io) >> shift) & 3;
-
-	do {
-		t--;
-		u = (inb(io) >> shift) & 3;
-
-		if (u ^ v) {
-
-			if ((u ^ v) & 1) {
-				p = t = (p - t) << 2;
-				buf = (buf << 1) | (u >> 1);
-				i++;
-			} else 
-
-			if ((((u ^ v) & (v ^ w)) >> 1) & ~(u | v | w) & 1) {
-				p = t = (p - t) << 2;
-				if (i == 20) {
-					crc = buf ^ (buf >> 7) ^ (buf >> 14);
-					if (!((crc ^ (0x25cb9e70 >> ((crc >> 2) & 0x1c))) & 0xf)) {
-						data[buf >> 18] = buf >> 4;
-						status |= 1 << (buf >> 18);
-					}
-					j++;
-				}
-				buf = 0;
-				i = 0;
-			}
-
-			w = v;
-			v = u;
-		}
-
-	} while (status != 0xf && i < JS_GR_MAX_BITS_XT && j < JS_GR_MAX_CHUNKS_XT && t > 0);
-
-	__restore_flags(flags);
-
-	return -(status != 0xf);
-}
-
-/*
- * js_gr_read() reads and analyzes GrIP joystick data.
- */
-
-static int js_gr_read(void *xinfo, int **axes, int **buttons)
-{
-	struct js_gr_info *info = xinfo;
-	unsigned int data[JS_GR_LENGTH_XT];
-	int i;
-
-	for (i = 0; i < 2; i++)
-		switch (info->mode[i]) {
-
-			case JS_GR_MODE_GPP:
-
-				if (js_gr_gpp_read_packet(info->io, (i << 1) + 4, data)) return -1;
-
-				axes[i][0] = ((data[0] >> 15) & 1) - ((data[0] >> 16) & 1);
-				axes[i][1] = ((data[0] >> 13) & 1) - ((data[0] >> 12) & 1);
-
-				data[0] = ((data[0] >> 6) & 0x37) | (data[0] & 0x08) | ((data[0] << 1) & 0x40) |
-				       ((data[0] << 5) & 0x80) | ((data[0] << 8) & 0x300);
-
-				buttons[i][0] = (data[0] & 0xfc) | ((data[0] >> 1) & 0x101) | ((data[0] << 1) & 0x202);
-
-				break;
-
-			case JS_GR_MODE_XT:
-
-				if (js_gr_xt_read_packet(info->io, (i << 1) + 4, data)) return -1;
-
-				axes[i][0] =       (data[0] >> 2) & 0x3f;
-				axes[i][1] = 63 - ((data[0] >> 8) & 0x3f);
-				axes[i][2] =       (data[1] >> 2) & 0x3f;
-				axes[i][3] =       (data[1] >> 8) & 0x3f;
-				axes[i][4] =       (data[2] >> 8) & 0x3f;
-
-				axes[i][5] = ((data[2] >> 1) & 1) - ( data[2]       & 1);
-				axes[i][6] = ((data[2] >> 2) & 1) - ((data[2] >> 3) & 1);
-				axes[i][7] = ((data[2] >> 5) & 1) - ((data[2] >> 4) & 1);
-				axes[i][8] = ((data[2] >> 6) & 1) - ((data[2] >> 7) & 1);
-
-				buttons[i][0] = (data[3] >> 3) & 0x7ff;
-
-				break;
-
-			case JS_GR_MODE_BD:
-
-				if (js_gr_xt_read_packet(info->io, (i << 1) + 4, data)) return -1;
-
-				axes[i][0] =       (data[0] >> 2) & 0x3f;
-				axes[i][1] = 63 - ((data[0] >> 8) & 0x3f);
-				axes[i][2] =       (data[2] >> 8) & 0x3f;
-
-				axes[i][3] = ((data[2] >> 1) & 1) - ( data[2]       & 1);
-				axes[i][4] = ((data[2] >> 2) & 1) - ((data[2] >> 3) & 1);
-
-				buttons[i][0] = ((data[3] >> 6) & 0x01) | ((data[3] >> 3) & 0x06)
-					      | ((data[3] >> 4) & 0x18);
-
-				break;
-
-			default:
-				break;
-
-		}
-
-
-	return 0;
-}
-
-/*
- * js_gr_open() is a callback from the file open routine.
- */
-
-static int js_gr_open(struct js_dev *jd)
-{
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-/*
- * js_gr_close() is a callback from the file release routine.
- */
-
-static int js_gr_close(struct js_dev *jd)
-{
-	MOD_DEC_USE_COUNT;
-	return 0;
-}
-
-/*
- * js_gr_init_corr() initializes correction values of
- * GrIP joysticks.
- */
-
-static void __init js_gr_init_corr(int mode, struct js_corr *corr)
-{
-	int i;
-
-	switch (mode) {
-
-		case JS_GR_MODE_GPP:
-
-			for (i = 0; i < 2; i++) {
-				corr[i].type = JS_CORR_BROKEN;
-				corr[i].prec = 0;
-				corr[i].coef[0] = 0;
-				corr[i].coef[1] = 0;
-				corr[i].coef[2] = (1 << 29);
-				corr[i].coef[3] = (1 << 29);
-			}
-
-			break;
-
-		case JS_GR_MODE_XT:
-
-			for (i = 0; i < 5; i++) {
-				corr[i].type = JS_CORR_BROKEN;
-				corr[i].prec = 0;
-				corr[i].coef[0] = 31 - 4;
-				corr[i].coef[1] = 32 + 4;
-				corr[i].coef[2] = (1 << 29) / (32 - 14);
-				corr[i].coef[3] = (1 << 29) / (32 - 14);
-			}
-
-			for (i = 5; i < 9; i++) {
-				corr[i].type = JS_CORR_BROKEN;
-				corr[i].prec = 0;
-				corr[i].coef[0] = 0;
-				corr[i].coef[1] = 0;
-				corr[i].coef[2] = (1 << 29);
-				corr[i].coef[3] = (1 << 29);
-			}
-
-			break;
-
-		case JS_GR_MODE_BD:
-
-			for (i = 0; i < 3; i++) {
-				corr[i].type = JS_CORR_BROKEN;
-				corr[i].prec = 0;
-				corr[i].coef[0] = 31 - 4;
-				corr[i].coef[1] = 32 + 4;
-				corr[i].coef[2] = (1 << 29) / (32 - 14);
-				corr[i].coef[3] = (1 << 29) / (32 - 14);
-			}
-
-			for (i = 3; i < 5; i++) {
-				corr[i].type = JS_CORR_BROKEN;
-				corr[i].prec = 0;
-				corr[i].coef[0] = 0;
-				corr[i].coef[1] = 0;
-				corr[i].coef[2] = (1 << 29);
-				corr[i].coef[3] = (1 << 29);
-			}
-			
-			break;
-
-	}
-}
-
-/*
- * js_gr_probe() probes for GrIP joysticks.
- */
-
-static struct js_port __init *js_gr_probe(int io, struct js_port *port)
-{
-	struct js_gr_info info;
-	char *names[] = { NULL, "Gravis GamePad Pro", "Gravis Xterminator", "Gravis Blackhawk Digital"};
-	char axes[] = { 0, 2, 9, 5};
-	char buttons[] = { 0, 10, 11, 5};
-	unsigned int data[JS_GR_LENGTH_XT];
-	int i;
-
-	if (check_region(io, 1)) return port;
-
-	info.mode[0] = info.mode[1] = 0;
-
-	for (i = 0; i < 2; i++) {
-		if (!js_gr_gpp_read_packet(io, (i << 1) + 4, data)) info.mode[i] = JS_GR_MODE_GPP;
-		if (!js_gr_xt_read_packet(io, (i << 1) + 4, data)) {
-			if ((data[3] & 7) == 7)
-				info.mode[i] = JS_GR_MODE_XT;
-			if ((data[3] & 7) == 0)
-				info.mode[i] = JS_GR_MODE_BD;
-		}
-	}
-
-	if (!info.mode[0] && !info.mode[1]) return port;
-
-	info.io = io;
-
-	request_region(io, 1, "joystick (gravis)");
-	port = js_register_port(port, &info, 2, sizeof(struct js_gr_info), js_gr_read);
-
-	for (i = 0; i < 2; i++)
-		if (info.mode[i]) {
-			printk(KERN_INFO "js%d: %s at %#x\n",
-				js_register_device(port, i, axes[info.mode[i]], buttons[info.mode[i]],
-					names[info.mode[i]], js_gr_open, js_gr_close),
-				names[info.mode[i]], io);
-			js_gr_init_corr(info.mode[i], port->corr[i]);
-		}
-
-	return port;
-}
-
-#ifdef MODULE
-int init_module(void)
-#else
-int __init js_gr_init(void)
-#endif
-{
-	int *p;
-
-	for (p = js_gr_port_list; *p; p++) js_gr_port = js_gr_probe(*p, js_gr_port);
-	if (js_gr_port) return 0;
-
-#ifdef MODULE
-	printk(KERN_WARNING "joy-gravis: no joysticks found\n");
-#endif
-
-	return -ENODEV;
-}
-
-#ifdef MODULE
-void cleanup_module(void)
-{
-	int i;
-	struct js_gr_info *info;
-
-	while (js_gr_port) {
-		for (i = 0; i < js_gr_port->ndevs; i++)
-			if (js_gr_port->devs[i])
-				js_unregister_device(js_gr_port->devs[i]);
-		info = js_gr_port->info;
-		release_region(info->io, 1);
-		js_gr_port = js_unregister_port(js_gr_port);
-	}
-}
-#endif