patch-2.1.125 linux/drivers/char/joystick/joy-thrustmaster.c

• Lines: 331
• Date: Thu Oct 8 17:25:16 1998
• Orig file: v2.1.124/linux/drivers/char/joystick/joy-thrustmaster.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.124/linux/drivers/char/joystick/joy-thrustmaster.c linux/drivers/char/joystick/joy-thrustmaster.c
@@ -0,0 +1,330 @@
+/*
+ *  joy-thrustmaster.c  Version 1.2
+ *
+ *  Copyright (c) 1998 Vojtech Pavlik
+ */
+
+/*
+ * This is a module for the Linux joystick driver, supporting
+ * ThrustMaster DirectConnect (BSP) 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@ucw.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/delay.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>
+
+#define JS_TM_MAX_START		200
+#define JS_TM_MAX_STROBE	15
+#define JS_TM_MAX_LENGTH	13
+
+#define JS_TM_MODE_M3DI		1
+#define JS_TM_MODE_3DRP		2
+#define JS_TM_MODE_WCS3		4
+
+#define JS_TM_MODE_MAX		5	/* Last mode + 1 */
+
+#define JS_TM_BYTE_A0		0
+#define JS_TM_BYTE_A1		1
+#define JS_TM_BYTE_A2		3
+#define JS_TM_BYTE_A3		4
+#define JS_TM_BYTE_A4		6
+#define JS_TM_BYTE_A5		7
+
+#define JS_TM_BYTE_D0		2
+#define JS_TM_BYTE_D1		5
+#define JS_TM_BYTE_D2		8
+#define JS_TM_BYTE_D3		9
+
+#define JS_TM_BYTE_ID		10
+#define JS_TM_BYTE_REV		11
+#define JS_TM_BYTE_DEF		12
+
+static int js_tm_port_list[] __initdata = {0x201, 0};
+static struct js_port* js_tm_port __initdata = NULL;
+
+struct js_tm_info {
+	int io;
+	unsigned char mode;
+};
+
+static int js_tm_id_to_def[JS_TM_MODE_MAX] = {0x00, 0x42, 0x22, 0x00, 0x00};
+
+/*
+ * js_tm_read_packet() reads a ThrustMaster packet.
+ */
+
+static int js_tm_read_packet(int io, unsigned char *data)
+{
+	unsigned int t, t1;
+	unsigned char u, v, error;
+	int i, j;
+	unsigned long flags;
+
+	int start = (js_time_speed * JS_TM_MAX_START) >> 10;
+	int strobe = (js_time_speed * JS_TM_MAX_STROBE) >> 10;
+
+	error = 0;
+	i = j = 0;
+
+	__save_flags(flags);
+	__cli();
+	outb(inb(io),io);
+
+	t = js_get_time();
+
+	do {
+		u = inb(io);
+		t1 = js_get_time();
+	} while ((u & 1) && js_delta(t1, t) < start);
+
+	t = t1;
+	u >>= 4;
+
+	do {
+		v = inb(io) >> 4;
+		t1 = js_get_time();
+		if ((u ^ v) & u & 2) {
+			if (j) {
+				if (j < 9) {				/* Data bit */
+					data[i] |= (~v & 1) << (j - 1);
+					j++;
+				} else {				/* Stop bit */
+					error |= v & 1;
+					j = 0;
+					i++;
+				}
+			} else {					/* Start bit */
+				error |= ~v & 1;
+				j++;
+			}
+			t = t1;
+		}
+		u = v;
+	} while (!error && i < JS_TM_MAX_LENGTH && js_delta(t1,t) < strobe);
+
+	__restore_flags(flags);
+
+	return -(i != JS_TM_MAX_LENGTH);
+}
+
+/*
+ * js_tm_read() reads and analyzes ThrustMaster joystick data.
+ */
+
+static int js_tm_read(void *xinfo, int **axes, int **buttons)
+{
+	struct js_tm_info *info = xinfo;
+	unsigned char data[JS_TM_MAX_LENGTH];
+
+	if (js_tm_read_packet(info->io, data)) {
+		printk(KERN_WARNING "joy-thrustmaster: failed to read data packet\n");
+		return -1;
+	}
+	if (data[JS_TM_BYTE_ID] != info->mode) {
+		printk(KERN_WARNING "joy-thrustmaster: ID (%d) != mode (%d)\n",
+			data[JS_TM_BYTE_ID], info->mode);
+		return -1;
+	}
+	if (data[JS_TM_BYTE_DEF] != js_tm_id_to_def[info->mode]) {
+		printk(KERN_WARNING "joy-thrustmaster: DEF (%d) != def(mode) (%d)\n",
+			data[JS_TM_BYTE_DEF], js_tm_id_to_def[info->mode]);
+		return -1;
+	}
+
+	switch (info->mode) {
+
+		case JS_TM_MODE_M3DI:
+
+			axes[0][0] = data[JS_TM_BYTE_A0];
+			axes[0][1] = data[JS_TM_BYTE_A1];
+			axes[0][2] = data[JS_TM_BYTE_A2];
+			axes[0][3] = data[JS_TM_BYTE_A3];
+
+			axes[0][4] = ((data[JS_TM_BYTE_D0] >> 3) & 1) - ((data[JS_TM_BYTE_D0] >> 1) & 1);
+			axes[0][5] = ((data[JS_TM_BYTE_D0] >> 2) & 1) - ( data[JS_TM_BYTE_D0]       & 1);
+
+			buttons[0][0] = ((data[JS_TM_BYTE_D0] >> 6) & 0x01) | ((data[JS_TM_BYTE_D0] >> 3) & 0x06)
+				      | ((data[JS_TM_BYTE_D0] >> 4) & 0x08) | ((data[JS_TM_BYTE_D1] >> 2) & 0x30);
+
+			return 0;
+
+		case JS_TM_MODE_3DRP:
+
+			axes[0][0] = data[JS_TM_BYTE_A0];
+			axes[0][1] = data[JS_TM_BYTE_A1];
+
+			buttons[0][0] = ( data[JS_TM_BYTE_D0]       & 0x3f) | ((data[JS_TM_BYTE_D1] << 6) & 0xc0)
+				      | (( ((int) data[JS_TM_BYTE_D0]) << 2) & 0x300);
+
+			return 0;
+
+	}
+
+	return -1;
+}
+
+/*
+ * js_tm_open() is a callback from the file open routine.
+ */
+
+static int js_tm_open(struct js_dev *jd)
+{
+	MOD_INC_USE_COUNT;
+	return 0;
+}
+
+/*
+ * js_tm_close() is a callback from the file release routine.
+ */
+
+static int js_tm_close(struct js_dev *jd)
+{
+	MOD_DEC_USE_COUNT;
+	return 0;
+}
+
+/*
+ * js_tm_init_corr() initializes the correction values for
+ * ThrustMaster joysticks.
+ */
+
+static void __init js_tm_init_corr(int num_axes, int mode, int **axes, struct js_corr **corr)
+{
+	int j;
+
+	for (j = 0; j < num_axes; j++) {
+		corr[0][j].type = JS_CORR_BROKEN;
+		corr[0][j].prec = 0;
+		corr[0][j].coef[0] = 127 - 2;
+		corr[0][j].coef[1] = 128 + 2;
+		corr[0][j].coef[2] = (1 << 29) / (127 - 4);
+		corr[0][j].coef[3] = (1 << 29) / (127 - 4);
+	}
+
+	switch (mode) {
+		case JS_TM_MODE_M3DI: j = 4; break;
+		case JS_TM_MODE_3DRP: j = 2; break;
+		default:	      j = 0; break;
+	}
+
+	for (; j < num_axes; j++) {
+		corr[0][j].type = JS_CORR_BROKEN;
+		corr[0][j].prec = 0;
+		corr[0][j].coef[0] = 0;
+		corr[0][j].coef[1] = 0;
+		corr[0][j].coef[2] = (1 << 29);
+		corr[0][j].coef[3] = (1 << 29);
+	}
+
+}
+
+/*
+ * js_tm_probe() probes for ThrustMaster type joysticks.
+ */
+
+static struct js_port __init *js_tm_probe(int io, struct js_port *port)
+{
+	struct js_tm_info info;
+	char *names[JS_TM_MODE_MAX] = { NULL, "ThrustMaster Millenium 3D Inceptor",
+						"ThrustMaster Rage 3D Gamepad", NULL, "ThrustMaster WCS III" };
+	char axes[JS_TM_MODE_MAX] = { 0, 6, 2, 0, 0 };
+	char buttons[JS_TM_MODE_MAX] = { 0, 5, 10, 0, 0 };
+
+	unsigned char data[JS_TM_MAX_LENGTH];
+	unsigned char u;
+
+	if (check_region(io, 1)) return port;
+
+	if (((u = inb(io)) & 3) == 3) return port;
+	outb(u,io);
+	if (!((inb(io) ^ u) & ~u & 0xf)) return port;
+
+	if(js_tm_read_packet(io, data)) {
+		printk(KERN_WARNING "joy-thrustmaster: probe - can't read packet\n");
+		return port;
+	}
+
+	info.io = io;
+	info.mode = data[JS_TM_BYTE_ID];
+
+	if (!info.mode) return port;
+
+	if (info.mode >= JS_TM_MODE_MAX || !names[info.mode]) {
+		printk(KERN_WARNING "joy-thrustmaster: unknown device detected "
+				    "(io=%#x, id=%d), contact <vojtech@ucw.cz>\n",
+					io, info.mode);
+		return port;
+	}
+
+	if (data[JS_TM_BYTE_DEF] != js_tm_id_to_def[info.mode]) {
+		printk(KERN_WARNING "joy-thrustmaster: wrong DEF (%d) for ID %d - should be %d\n",
+				data[JS_TM_BYTE_DEF], info.mode, js_tm_id_to_def[info.mode]);
+	}
+
+	request_region(io, 1, "joystick (thrustmaster)");
+	port = js_register_port(port, &info, 1, sizeof(struct js_tm_info), js_tm_read);
+	printk(KERN_INFO "js%d: %s revision %d at %#x\n",
+		js_register_device(port, 0, axes[info.mode], buttons[info.mode],
+				names[info.mode], js_tm_open, js_tm_close), names[info.mode], data[JS_TM_BYTE_REV], io);
+	js_tm_init_corr(axes[info.mode], info.mode, port->axes, port->corr);
+
+	return port;
+}
+
+#ifdef MODULE
+int init_module(void)
+#else
+int __init js_tm_init(void)
+#endif
+{
+	int *p;
+
+	for (p = js_tm_port_list; *p; p++) js_tm_port = js_tm_probe(*p, js_tm_port);
+	if (js_tm_port) return 0;
+
+#ifdef MODULE
+	printk(KERN_WARNING "joy-thrustmaster: no joysticks found\n");
+#endif
+
+	return -ENODEV;
+}
+
+#ifdef MODULE
+void cleanup_module(void)
+{
+	struct js_tm_info *info;
+
+	while (js_tm_port) {
+		js_unregister_device(js_tm_port->devs[0]);
+		info = js_tm_port->info;
+		release_region(info->io, 1);
+		js_tm_port = js_unregister_port(js_tm_port);
+	}
+}
+#endif