patch-2.4.0-test2 linux/drivers/char/joystick/interact.c

• Lines: 307
• Date: Wed Jun 21 08:22:21 2000
• Orig file: v2.4.0-test1/linux/drivers/char/joystick/interact.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test1/linux/drivers/char/joystick/interact.c linux/drivers/char/joystick/interact.c
@@ -0,0 +1,306 @@
+/*
+ * $Id: interact.c,v 1.8 2000/05/29 11:19:51 vojtech Exp $
+ *
+ *  Copyright (c) 2000 Vojtech Pavlik
+ *
+ *  Based on the work of:
+ *	Toby Deshane
+ *
+ *  Sponsored by SuSE
+ */
+
+/*
+ * InterAct digital gamepad/joystick driver for Linux
+ */
+
+/*
+ * 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 <linux/kernel.h>
+#include <linux/malloc.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/gameport.h>
+#include <linux/input.h>
+
+#define INTERACT_MAX_START	400	/* 400 us */
+#define INTERACT_MAX_STROBE	40	/* 40 us */
+#define INTERACT_MAX_LENGTH	32	/* 32 bits */
+#define INTERACT_REFRESH_TIME	HZ/50	/* 20 ms */
+
+#define INTERACT_TYPE_HHFX	0	/* HammerHead/FX */
+#define INTERACT_TYPE_PP8D	1	/* ProPad 8 */
+
+struct interact {
+	struct gameport *gameport;
+	struct input_dev dev;
+	struct timer_list timer;
+	int used;
+	int bads;
+	int reads;
+	unsigned char type;
+	unsigned char length;
+};
+
+static short interact_abs_hhfx[] = 
+	{ ABS_RX, ABS_RY, ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y, -1 };
+static short interact_abs_pp8d[] =
+	{ ABS_X, ABS_Y, -1 };
+
+static short interact_btn_hhfx[] =
+	{ BTN_TR, BTN_X, BTN_Y, BTN_Z, BTN_A, BTN_B, BTN_C, BTN_TL, BTN_TL2, BTN_TR2, BTN_MODE, BTN_SELECT, -1 };
+static short interact_btn_pp8d[] =
+	{ BTN_C, BTN_TL, BTN_TR, BTN_A, BTN_B, BTN_Y, BTN_Z, BTN_X, -1 };
+
+struct interact_type {
+	int id;
+	short *abs;
+	short *btn;
+	char *name;
+	unsigned char length;
+	unsigned char b8;
+};
+
+static struct interact_type interact_type[] = {
+	{ 0x6202, interact_abs_hhfx, interact_btn_hhfx, "InterAct HammerHead/FX",    32, 4 },
+	{ 0x53f8, interact_abs_pp8d, interact_btn_pp8d, "InterAct ProPad 8 Digital", 16, 0 },
+	{ 0 }};
+
+/*
+ * interact_read_packet() reads and InterAct joystick data.
+ */
+
+static int interact_read_packet(struct gameport *gameport, int length, u32 *data)
+{
+	unsigned long flags;
+	unsigned char u, v;
+	unsigned int t, s;
+	int i;
+
+	i = 0;
+	data[0] = data[1] = data[2] = 0;
+	t = gameport_time(gameport, INTERACT_MAX_START);
+	s = gameport_time(gameport, INTERACT_MAX_STROBE);
+
+	__save_flags(flags);
+	__cli();
+	gameport_trigger(gameport);
+	v = gameport_read(gameport);
+
+	while (t > 0 && i < length) {
+		t--;
+		u = v; v = gameport_read(gameport);
+		if (v & ~u & 0x40) {
+			data[0] = (data[0] << 1) | ((v >> 4) & 1);
+			data[1] = (data[1] << 1) | ((v >> 5) & 1);
+			data[2] = (data[2] << 1) | ((v >> 7) & 1);
+			i++;
+			t = s;
+		}
+	}
+
+	__restore_flags(flags);
+
+	return i;
+}
+
+/*
+ * interact_timer() reads and analyzes InterAct joystick data.
+ */
+
+static void interact_timer(unsigned long private)
+{
+	struct interact *interact = (struct interact *) private;
+	struct input_dev *dev = &interact->dev;
+	u32 data[3];
+	int i;
+
+	interact->reads++;
+
+	if (interact_read_packet(interact->gameport, interact->length, data) < interact->length) {
+		interact->bads++;
+	} else
+
+	for (i = 0; i < 3; i++)
+		data[i] <<= INTERACT_MAX_LENGTH - interact->length;
+
+	switch (interact->type) {
+
+		case INTERACT_TYPE_HHFX:
+
+			for (i = 0; i < 4; i++)
+				input_report_abs(dev, interact_abs_hhfx[i], (data[i & 1] >> ((i >> 1) << 3)) & 0xff);
+
+			for (i = 0; i < 2; i++)
+				input_report_abs(dev, ABS_HAT0Y - i,
+					((data[1] >> ((i << 1) + 17)) & 1)  - ((data[1] >> ((i << 1) + 16)) & 1));
+
+			for (i = 0; i < 8; i++)
+				input_report_key(dev, interact_btn_hhfx[i], (data[0] >> (i + 16)) & 1);
+
+			for (i = 0; i < 4; i++)
+				input_report_key(dev, interact_btn_hhfx[i + 8], (data[1] >> (i + 20)) & 1);
+
+			break;
+
+		case INTERACT_TYPE_PP8D:
+
+			for (i = 0; i < 2; i++)
+				input_report_abs(dev, interact_abs_pp8d[i], 
+					((data[0] >> ((i << 1) + 20)) & 1)  - ((data[0] >> ((i << 1) + 21)) & 1));
+
+			for (i = 0; i < 8; i++)
+				input_report_key(dev, interact_btn_pp8d[i], (data[1] >> (i + 16)) & 1);
+
+			break;
+	}
+
+	mod_timer(&interact->timer, jiffies + INTERACT_REFRESH_TIME);
+
+}
+
+/*
+ * interact_open() is a callback from the input open routine.
+ */
+
+static int interact_open(struct input_dev *dev)
+{
+	struct interact *interact = dev->private;
+	if (!interact->used++)
+		mod_timer(&interact->timer, jiffies + INTERACT_REFRESH_TIME);	
+	return 0;
+}
+
+/*
+ * interact_close() is a callback from the input close routine.
+ */
+
+static void interact_close(struct input_dev *dev)
+{
+	struct interact *interact = dev->private;
+	if (!--interact->used)
+		del_timer(&interact->timer);
+}
+
+/*
+ * interact_connect() probes for InterAct joysticks.
+ */
+
+static void interact_connect(struct gameport *gameport, struct gameport_dev *dev)
+{
+	struct interact *interact;
+	__u32 data[3];
+	int i, t;
+
+	if (!(interact = kmalloc(sizeof(struct interact), GFP_KERNEL)))
+		return;
+	memset(interact, 0, sizeof(struct interact));
+
+	gameport->private = interact;
+
+	interact->gameport = gameport;
+	init_timer(&interact->timer);
+	interact->timer.data = (long) interact;
+	interact->timer.function = interact_timer;
+
+	if (gameport_open(gameport, dev, GAMEPORT_MODE_RAW))
+		goto fail1;
+
+	i = interact_read_packet(gameport, INTERACT_MAX_LENGTH * 2, data);
+
+	if (i != 32 || (data[0] >> 24) != 0x0c || (data[1] >> 24) != 0x02) {
+		goto fail2;
+	}
+
+	for (i = 0; interact_type[i].length; i++)
+		if (interact_type[i].id == (data[2] >> 16))
+			break;
+
+	if (!interact_type[i].length) {
+		printk(KERN_WARNING "interact.c: Unknown joystick on gameport%d. [len %d d0 %08x d1 %08x i2 %08x]\n",
+			gameport->number, i, data[0], data[1], data[2]);
+		goto fail2;	
+	}
+
+	interact->type = i;
+	interact->length = interact_type[i].length;
+
+	interact->dev.private = interact;
+	interact->dev.open = interact_open;
+	interact->dev.close = interact_close;
+
+	interact->dev.name = interact_type[i].name;
+	interact->dev.idbus = BUS_GAMEPORT;
+	interact->dev.idvendor = GAMEPORT_ID_VENDOR_INTERACT;
+	interact->dev.idproduct = interact_type[i].id;
+	interact->dev.idversion = 0x0100;
+
+	interact->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+
+	for (i = 0; (t = interact_type[interact->type].abs[i]) >= 0; i++) {
+		set_bit(t, interact->dev.absbit);
+		if (i < interact_type[interact->type].b8) {
+			interact->dev.absmin[t] = 0;
+			interact->dev.absmax[t] = 255;
+		} else {
+			interact->dev.absmin[t] = -1;
+			interact->dev.absmax[t] = 1;
+		}
+	}
+
+	for (i = 0; (t = interact_type[interact->type].btn[i]) >= 0; i++)
+		set_bit(t, interact->dev.keybit);
+
+	input_register_device(&interact->dev);
+	printk(KERN_INFO "input%d: %s on gameport%d.0\n",
+		interact->dev.number, interact_type[interact->type].name, gameport->number);
+
+	return;
+fail2:	gameport_close(gameport);
+fail1:  kfree(interact);
+}
+
+static void interact_disconnect(struct gameport *gameport)
+{
+	struct interact *interact = gameport->private;
+	input_unregister_device(&interact->dev);
+	gameport_close(gameport);
+	kfree(interact);
+}
+
+static struct gameport_dev interact_dev = {
+	connect:	interact_connect,
+	disconnect:	interact_disconnect,
+};
+
+int __init interact_init(void)
+{
+	gameport_register_device(&interact_dev);
+	return 0;
+}
+
+void __exit interact_exit(void)
+{
+	gameport_unregister_device(&interact_dev);
+}
+
+module_init(interact_init);
+module_exit(interact_exit);