Update the iforce driver to the latest revision (it now lives in a

separate directory), add twiddler and guillemot drivers.

drivers/input/joystick/Config.help

@@ -67,6 +67,15 @@ CONFIG_JOYSTICK_GRIP
   The module will be called grip.o. If you want to compile it as a
   module, say M here and read <file:Documentation/modules.txt>.
 
+CONFIG_JOYSTICK_GUILLEMOT
+  Say Y here if you have a Guillemot joystick using a digital
+  protocol over the PC gameport. 
+
+  This driver is also available as a module ( = code which can be
+  inserted in and removed from the running kernel whenever you want).
+  The module will be called guillemot.o. If you want to compile it as a
+  module, say M here and read <file:Documentation/modules.txt>.
+
 CONFIG_JOYSTICK_INTERACT
   Say Y here if you have an InterAct gameport or joystick
   communicating digitally over the gameport.
@@ -158,6 +167,15 @@ CONFIG_JOYSTICK_STINGER
   The module will be called stinger.o. If you want to compile it as a
   module, say M here and read <file:Documentation/modules.txt>.
 
+CONFIG_JOYSTICK_TWIDDLER
+  Say Y here if you have a Handykey Twiddler connected to your
+  computer's serial port and want to use it as a joystick.
+
+  This driver is also available as a module ( = code which can be
+  inserted in and removed from the running kernel whenever you want).
+  The module will be called twidjoy.o. If you want to compile it as a
+  module, say M here and read <file:Documentation/modules.txt>.
+
 CONFIG_JOYSTICK_DB9
   Say Y here if you have a Sega Master System gamepad, Sega Genesis
   gamepad, Sega Saturn gamepad, or a Multisystem -- Atari, Amiga,

drivers/input/joystick/Config.in

@@ -10,6 +10,7 @@ dep_tristate '  Logitech ADI digital joysticks and gamepads' CONFIG_JOYSTICK_ADI
 dep_tristate '  Creative Labs Blaster Cobra gamepad' CONFIG_JOYSTICK_COBRA $CONFIG_INPUT $CONFIG_INPUT_JOYSTICK $CONFIG_GAMEPORT
 dep_tristate '  Genius Flight2000 Digital joysticks and gamepads' CONFIG_JOYSTICK_GF2K $CONFIG_INPUT $CONFIG_INPUT_JOYSTICK $CONFIG_GAMEPORT
 dep_tristate '  Gravis GrIP joysticks and gamepads' CONFIG_JOYSTICK_GRIP $CONFIG_INPUT $CONFIG_INPUT_JOYSTICK $CONFIG_GAMEPORT
+dep_tristate '  Guillemot joysticks and gamepads' CONFIG_JOYSTICK_GUILLEMOT $CONFIG_INPUT $CONFIG_INPUT_JOYSTICK $CONFIG_GAMEPORT
 dep_tristate '  InterAct digital joysticks and gamepads' CONFIG_JOYSTICK_INTERACT $CONFIG_INPUT $CONFIG_INPUT_JOYSTICK $CONFIG_GAMEPORT
 dep_tristate '  Microsoft SideWinder digital joysticks and gamepads' CONFIG_JOYSTICK_SIDEWINDER $CONFIG_INPUT $CONFIG_INPUT_JOYSTICK $CONFIG_GAMEPORT
 dep_tristate '  ThrustMaster DirectConnect joysticks and gamepads' CONFIG_JOYSTICK_TMDC $CONFIG_INPUT $CONFIG_INPUT_JOYSTICK $CONFIG_GAMEPORT
@@ -21,6 +22,7 @@ dep_tristate '  LogiCad3d Magellan/SpaceMouse 6dof controllers' CONFIG_JOYSTICK_
 dep_tristate '  SpaceTec SpaceOrb/Avenger 6dof controllers' CONFIG_JOYSTICK_SPACEORB $CONFIG_INPUT $CONFIG_INPUT_JOYSTICK $CONFIG_SERIO
 dep_tristate '  SpaceTec SpaceBall 6dof controllers' CONFIG_JOYSTICK_SPACEBALL $CONFIG_INPUT $CONFIG_INPUT_JOYSTICK $CONFIG_SERIO
 dep_tristate '  Gravis Stinger gamepad' CONFIG_JOYSTICK_STINGER $CONFIG_INPUT $CONFIG_INPUT_JOYSTICK $CONFIG_SERIO
+dep_tristate '  Twiddler as as joystick' CONFIG_JOYSTICK_TWIDDLER $CONFIG_INPUT $CONFIG_INPUT_JOYSTICK $CONFIG_SERIO
 
 dep_tristate '  Multisystem, Sega Genesis, Saturn joysticks and gamepads' CONFIG_JOYSTICK_DB9 $CONFIG_INPUT $CONFIG_INPUT_JOYSTICK $CONFIG_PARPORT
 dep_tristate '  Multisystem, NES, SNES, N64, PSX joysticks and gamepads' CONFIG_JOYSTICK_GAMECON $CONFIG_INPUT $CONFIG_INPUT_JOYSTICK $CONFIG_PARPORT

drivers/input/joystick/Makefile

@@ -2,24 +2,6 @@
 # Makefile for the input core drivers.
 #
 
-# I-Force may need both USB and RS-232
-
-CONFIG_JOYSTICK_IFORCE := n
-
-ifeq ($(CONFIG_JOYSTICK_IFORCE_232),y)
-	ifeq ($(CONFIG_JOYSTICK_IFORCE_USB),y)
-		CONFIG_JOYSTICK_IFORCE := y
-	endif
-endif
-
-ifeq ($(CONFIG_JOYSTICK_IFORCE_232),m)
-	CONFIG_JOYSTICK_IFORCE := m
-endif
-
-ifeq ($(CONFIG_JOYSTICK_IFORCE_USB),m)
-	CONFIG_JOYSTICK_IFORCE := m
-endif
-
 # Each configuration option enables a list of files.
 
 obj-$(CONFIG_JOYSTICK_A3D)		+= a3d.o
@@ -31,8 +13,9 @@ obj-$(CONFIG_JOYSTICK_DB9)		+= db9.o
 obj-$(CONFIG_JOYSTICK_GAMECON)		+= gamecon.o
 obj-$(CONFIG_JOYSTICK_GF2K)		+= gf2k.o
 obj-$(CONFIG_JOYSTICK_GRIP)		+= grip.o
-obj-$(CONFIG_JOYSTICK_IFORCE)		+= iforce.o
+obj-$(CONFIG_JOYSTICK_GUILLEMOT)	+= guillemot.o
 obj-$(CONFIG_JOYSTICK_INTERACT)		+= interact.o
+obj-$(CONFIG_JOYSTICK_JOYDUMP)		+= joydump.o
 obj-$(CONFIG_JOYSTICK_MAGELLAN)		+= magellan.o
 obj-$(CONFIG_JOYSTICK_SIDEWINDER)	+= sidewinder.o
 obj-$(CONFIG_JOYSTICK_SPACEBALL)	+= spaceball.o
@@ -40,8 +23,33 @@ obj-$(CONFIG_JOYSTICK_SPACEORB)		+= spaceorb.o
 obj-$(CONFIG_JOYSTICK_STINGER)		+= stinger.o
 obj-$(CONFIG_JOYSTICK_TMDC)		+= tmdc.o
 obj-$(CONFIG_JOYSTICK_TURBOGRAFX)	+= turbografx.o
+obj-$(CONFIG_JOYSTICK_TWIDJOY)		+= twidjoy.o
 obj-$(CONFIG_JOYSTICK_WARRIOR)		+= warrior.o
 
+# I-Force may need both USB and RS-232
+
+CONFIG_JOYSTICK_IFORCE := n
+
+ifeq ($(CONFIG_JOYSTICK_IFORCE_232),y)
+	ifeq ($(CONFIG_JOYSTICK_IFORCE_USB),y)
+		CONFIG_JOYSTICK_IFORCE := y
+	endif
+endif
+
+ifeq ($(CONFIG_JOYSTICK_IFORCE_232),m)
+	CONFIG_JOYSTICK_IFORCE := m
+endif
+
+ifeq ($(CONFIG_JOYSTICK_IFORCE_USB),m)
+	CONFIG_JOYSTICK_IFORCE := m
+endif
+
+subdir-$(CONFIG_JOYSTICK_IFORCE)	+= iforce
+
+ifeq ($(CONFIG_JOYSTICK_IFORCE),y)
+	obj-y += iforce/iforce-drv.o
+endif
+
 # The global Rules.make.
 
 include $(TOPDIR)/Rules.make

drivers/input/joystick/guillemot.c

+/*
+ * $Id: guillemot.c,v 1.10 2002/01/22 20:28:12 vojtech Exp $
+ *
+ *  Copyright (c) 2001 Vojtech Pavlik
+ */
+
+/*
+ * Guillemot Digital Interface Protocol 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@ucw.cz>, or by paper mail:
+ * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/gameport.h>
+#include <linux/input.h>
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION("Guillemot Digital joystick driver");
+MODULE_LICENSE("GPL");
+
+#define GUILLEMOT_MAX_START	600	/* 600 us */
+#define GUILLEMOT_MAX_STROBE	60	/* 60 us */
+#define GUILLEMOT_MAX_LENGTH	17	/* 17 bytes */
+#define GUILLEMOT_REFRESH_TIME	HZ/50	/* 20 ms */
+
+static short guillemot_abs_pad[] = 
+	{ ABS_X, ABS_Y, ABS_THROTTLE, ABS_RUDDER, -1 };
+
+static short guillemot_btn_pad[] =
+	{ BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_MODE, BTN_SELECT, -1 };
+
+static struct {
+        int x;
+        int y;
+} guillemot_hat_to_axis[16] = {{ 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
+
+struct guillemot_type {
+	unsigned char id;
+	short *abs;
+	short *btn;
+	int hat;
+	char *name;
+};
+
+struct guillemot {
+	struct gameport *gameport;
+	struct input_dev dev;
+	struct timer_list timer;
+	int used;
+	int bads;
+	int reads;
+	struct guillemot_type *type;
+	unsigned char length;
+	char phys[32];
+};
+
+static struct guillemot_type guillemot_type[] = {
+	{ 0x00, guillemot_abs_pad, guillemot_btn_pad, 1, "Guillemot Pad" },
+	{ 0 }};
+
+/*
+ * guillemot_read_packet() reads Guillemot joystick data.
+ */
+
+static int guillemot_read_packet(struct gameport *gameport, u8 *data)
+{
+	unsigned long flags;
+	unsigned char u, v;
+	unsigned int t, s;
+	int i;
+
+	for (i = 0; i < GUILLEMOT_MAX_LENGTH; i++)
+		data[i] = 0;
+
+	i = 0;
+	t = gameport_time(gameport, GUILLEMOT_MAX_START);
+	s = gameport_time(gameport, GUILLEMOT_MAX_STROBE);
+
+	__save_flags(flags);
+	__cli();
+	gameport_trigger(gameport);
+	v = gameport_read(gameport);
+
+	while (t > 0 && i < GUILLEMOT_MAX_LENGTH * 8) {
+		t--;
+		u = v; v = gameport_read(gameport);
+		if (v & ~u & 0x10) {
+			data[i >> 3] |= ((v >> 5) & 1) << (i & 7);
+			i++;
+			t = s;
+		}
+	}
+
+	__restore_flags(flags);
+
+	return i;
+}
+
+/*
+ * guillemot_timer() reads and analyzes Guillemot joystick data.
+ */
+
+static void guillemot_timer(unsigned long private)
+{
+	struct guillemot *guillemot = (struct guillemot *) private;
+	struct input_dev *dev = &guillemot->dev;
+	u8 data[GUILLEMOT_MAX_LENGTH];
+	int i;
+
+	guillemot->reads++;
+
+	if (guillemot_read_packet(guillemot->gameport, data) != GUILLEMOT_MAX_LENGTH * 8 ||
+		data[0] != 0x55 || data[16] != 0xaa) {
+		guillemot->bads++;
+	} else {
+
+		for (i = 0; i < 6 && guillemot->type->abs[i] >= 0; i++)
+			input_report_abs(dev, guillemot->type->abs[i], data[i + 5]);
+
+		if (guillemot->type->hat) {
+			input_report_abs(dev, ABS_HAT0X, guillemot_hat_to_axis[data[4] >> 4].x);
+			input_report_abs(dev, ABS_HAT0Y, guillemot_hat_to_axis[data[4] >> 4].y);
+		}
+
+		for (i = 0; i < 16 && guillemot->type->btn[i] >= 0; i++)
+			input_report_key(dev, guillemot->type->btn[i], (data[2 + (i >> 3)] >> (i & 7)) & 1);
+	}
+
+	mod_timer(&guillemot->timer, jiffies + GUILLEMOT_REFRESH_TIME);
+}
+
+/*
+ * guillemot_open() is a callback from the input open routine.
+ */
+
+static int guillemot_open(struct input_dev *dev)
+{
+	struct guillemot *guillemot = dev->private;
+	if (!guillemot->used++)
+		mod_timer(&guillemot->timer, jiffies + GUILLEMOT_REFRESH_TIME);	
+	return 0;
+}
+
+/*
+ * guillemot_close() is a callback from the input close routine.
+ */
+
+static void guillemot_close(struct input_dev *dev)
+{
+	struct guillemot *guillemot = dev->private;
+	if (!--guillemot->used)
+		del_timer(&guillemot->timer);
+}
+
+/*
+ * guillemot_connect() probes for Guillemot joysticks.
+ */
+
+static void guillemot_connect(struct gameport *gameport, struct gameport_dev *dev)
+{
+	struct guillemot *guillemot;
+	u8 data[GUILLEMOT_MAX_LENGTH];
+	int i, t;
+
+	if (!(guillemot = kmalloc(sizeof(struct guillemot), GFP_KERNEL)))
+		return;
+	memset(guillemot, 0, sizeof(struct guillemot));
+
+	gameport->private = guillemot;
+
+	guillemot->gameport = gameport;
+	init_timer(&guillemot->timer);
+	guillemot->timer.data = (long) guillemot;
+	guillemot->timer.function = guillemot_timer;
+
+	if (gameport_open(gameport, dev, GAMEPORT_MODE_RAW))
+		goto fail1;
+
+	i = guillemot_read_packet(gameport, data);
+
+	if (i != GUILLEMOT_MAX_LENGTH * 8 || data[0] != 0x55 || data[16] != 0xaa)
+		goto fail2;
+
+	for (i = 0; guillemot_type[i].name; i++)
+		if (guillemot_type[i].id == data[11])
+			break;
+
+	if (!guillemot_type[i].name) {
+		printk(KERN_WARNING "guillemot.c: Unknown joystick on %s. [ %02x%02x:%04x, ver %d.%02d ]\n",
+			gameport->phys, data[12], data[13], data[11], data[14], data[15]);
+		goto fail2;	
+	}
+
+	sprintf(guillemot->phys, "%s/input0", gameport->phys);
+
+	guillemot->type = guillemot_type + i;
+
+	guillemot->dev.private = guillemot;
+	guillemot->dev.open = guillemot_open;
+	guillemot->dev.close = guillemot_close;
+
+	guillemot->dev.name = guillemot_type[i].name;
+	guillemot->dev.phys = guillemot->phys;
+	guillemot->dev.idbus = BUS_GAMEPORT;
+	guillemot->dev.idvendor = GAMEPORT_ID_VENDOR_GUILLEMOT;
+	guillemot->dev.idproduct = guillemot_type[i].id;
+	guillemot->dev.idversion = (int)data[14] << 8 | data[15];
+
+	guillemot->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+
+	for (i = 0; (t = guillemot->type->abs[i]) >= 0; i++) {
+		set_bit(t, guillemot->dev.absbit);
+		guillemot->dev.absmin[t] = 0;
+		guillemot->dev.absmax[t] = 255;
+	}
+
+	if (guillemot->type->hat) 
+		for (i = 0; i < 2; i++) {
+			t = ABS_HAT0X + i;
+			set_bit(t, guillemot->dev.absbit);
+			guillemot->dev.absmin[t] = -1;
+			guillemot->dev.absmax[t] = 1;
+		}
+
+	for (i = 0; (t = guillemot->type->btn[i]) >= 0; i++)
+		set_bit(t, guillemot->dev.keybit);
+
+	input_register_device(&guillemot->dev);
+	printk(KERN_INFO "input: %s ver %d.%02d on %s\n",
+		guillemot->type->name, data[14], data[15], gameport->phys);
+
+	return;
+fail2:	gameport_close(gameport);
+fail1:  kfree(guillemot);
+}
+
+static void guillemot_disconnect(struct gameport *gameport)
+{
+	struct guillemot *guillemot = gameport->private;
+	printk(KERN_INFO "guillemot.c: Failed %d reads out of %d on %s\n", guillemot->reads, guillemot->bads, guillemot->phys);
+	input_unregister_device(&guillemot->dev);
+	gameport_close(gameport);
+	kfree(guillemot);
+}
+
+static struct gameport_dev guillemot_dev = {
+	connect:	guillemot_connect,
+	disconnect:	guillemot_disconnect,
+};
+
+int __init guillemot_init(void)
+{
+	gameport_register_device(&guillemot_dev);
+	return 0;
+}
+
+void __exit guillemot_exit(void)
+{
+	gameport_unregister_device(&guillemot_dev);
+}
+
+module_init(guillemot_init);
+module_exit(guillemot_exit);

drivers/input/joystick/iforce/Makefile

+#
+# Makefile for the I-Force driver
+#
+
+O_TARGET := iforce-drv.o
+
+# I-Force may need both USB and RS-232
+
+CONFIG_JOYSTICK_IFORCE := n
+
+ifeq ($(CONFIG_JOYSTICK_IFORCE_232),y)
+	ifeq ($(CONFIG_JOYSTICK_IFORCE_USB),y)
+		CONFIG_JOYSTICK_IFORCE := y
+	endif
+endif
+
+ifeq ($(CONFIG_JOYSTICK_IFORCE_232),m)
+	CONFIG_JOYSTICK_IFORCE := m
+endif
+
+ifeq ($(CONFIG_JOYSTICK_IFORCE_USB),m)
+	CONFIG_JOYSTICK_IFORCE := m
+endif
+
+obj-$(CONFIG_JOYSTICK_IFORCE)	+= iforce.o 
+
+include $(TOPDIR)/Rules.make
+
+IFORCEOBJS = iforce-ff.o iforce-main.o iforce-packets.o
+
+ifneq ($(CONFIG_JOYSTICK_IFORCE_232),)
+	IFORCEOBJS += iforce-serio.o 
+endif
+
+ifneq ($(CONFIG_JOYSTICK_IFORCE_USB),)
+	IFORCEOBJS += iforce-usb.o 
+endif
+
+iforce.o: $(IFORCEOBJS) 
+	$(LD) -i $(IFORCEOBJS) -o $@
+

drivers/input/joystick/iforce/iforce-packets.c

+/*
+ * $Id: iforce-packets.c,v 1.15 2002/06/09 11:08:04 jdeneux Exp $
+ *
+ *  Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
+ *  Copyright (c) 2001-2002 Johann Deneux <deneux@ifrance.com>
+ *
+ *  USB/RS232 I-Force joysticks and wheels.
+ */
+
+/*
+ * 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, Simunkova 1594, Prague 8, 182 00 Czech Republic
+ */
+
+#include "iforce.h"
+
+static struct {
+	__s32 x;
+	__s32 y;
+} iforce_hat_to_axis[16] = {{ 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
+
+
+void iforce_dump_packet(char *msg, u16 cmd, unsigned char *data)
+{
+	int i;
+
+	printk(KERN_DEBUG "iforce.c: %s ( cmd = %04x, data = ", msg, cmd);
+	for (i = 0; i < LO(cmd); i++)
+		printk("%02x ", data[i]);
+	printk(")\n");
+}
+
+/*
+ * Send a packet of bytes to the device
+ */
+int iforce_send_packet(struct iforce *iforce, u16 cmd, unsigned char* data)
+{
+	/* Copy data to buffer */
+	int n = LO(cmd);
+	int c;
+	int empty;
+	int head, tail;
+	unsigned long flags;
+			
+/*
+ * Update head and tail of xmit buffer
+ */
+	spin_lock_irqsave(&iforce->xmit_lock, flags);
+
+	head = iforce->xmit.head;
+	tail = iforce->xmit.tail;
+
+	if (CIRC_SPACE(head, tail, XMIT_SIZE) < n+2) {
+		printk(KERN_WARNING "iforce.c: not enough space in xmit buffer to send new packet\n");
+		spin_unlock_irqrestore(&iforce->xmit_lock, flags);
+		return -1;
+	}
+
+	empty = head == tail;
+	XMIT_INC(iforce->xmit.head, n+2);
+
+/*
+ * Store packet in xmit buffer
+ */
+	iforce->xmit.buf[head] = HI(cmd);
+	XMIT_INC(head, 1);
+	iforce->xmit.buf[head] = LO(cmd);
+	XMIT_INC(head, 1);
+
+	c = CIRC_SPACE_TO_END(head, tail, XMIT_SIZE);
+	if (n < c) c=n;
+
+	memcpy(&iforce->xmit.buf[head],
+	       data,
+	       c);
+	if (n != c) {
+		memcpy(&iforce->xmit.buf[0],
+		       data + c,
+		       n - c);
+	}
+	XMIT_INC(head, n);
+
+	spin_unlock_irqrestore(&iforce->xmit_lock, flags);
+/*
+ * If necessary, start the transmission
+ */
+	switch (iforce->bus) {
+
+#ifdef IFORCE_232
+		case IFORCE_232:
+		if (empty)
+			iforce_serial_xmit(iforce);
+		break;
+#endif
+#ifdef IFORCE_USB
+		case IFORCE_USB: 
+
+		if (iforce->usbdev && empty &&
+			!test_and_set_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags)) {
+
+			iforce_usb_xmit(iforce);
+		}
+		break;
+#endif
+	}
+	return 0;
+}
+
+/* Start or stop an effect */
+int iforce_control_playback(struct iforce* iforce, u16 id, unsigned int value)
+{
+	unsigned char data[3];
+
+printk(KERN_DEBUG "iforce-packets.c: control_playback %d %d\n", id, value);
+
+	data[0] = LO(id);
+	data[1] = (value > 0) ? ((value > 1) ? 0x41 : 0x01) : 0;
+	data[2] = LO(value);
+	return iforce_send_packet(iforce, FF_CMD_PLAY, data);
+}
+
+/* Mark an effect that was being updated as ready. That means it can be updated
+ * again */
+static int mark_core_as_ready(struct iforce *iforce, unsigned short addr)
+{
+	int i;
+	for (i=0; i<iforce->dev.ff_effects_max; ++i) {
+		if (test_bit(FF_CORE_IS_USED, iforce->core_effects[i].flags) &&
+		    (iforce->core_effects[i].mod1_chunk.start == addr ||
+		     iforce->core_effects[i].mod2_chunk.start == addr)) {
+			clear_bit(FF_CORE_UPDATE, iforce->core_effects[i].flags);
+			return 0;
+		}
+	}
+	printk(KERN_WARNING "iforce-packets.c: unused effect %04x updated !!!\n", addr);
+	return -1;
+}
+
+void iforce_process_packet(struct iforce *iforce, u16 cmd, unsigned char *data)
+{
+	struct input_dev *dev = &iforce->dev;
+	int i;
+	static int being_used = 0;
+
+	if (being_used)
+		printk(KERN_WARNING "iforce-packets.c: re-entrant call to iforce_process %d\n", being_used);
+	being_used++;
+
+#ifdef IFORCE_232
+	if (HI(iforce->expect_packet) == HI(cmd)) {
+		iforce->expect_packet = 0;
+		iforce->ecmd = cmd;
+		memcpy(iforce->edata, data, IFORCE_MAX_LENGTH);
+		if (waitqueue_active(&iforce->wait))
+			wake_up(&iforce->wait);
+	}
+#endif
+
+	if (!iforce->type) {
+		being_used--;
+		return;
+	}
+
+	switch (HI(cmd)) {
+
+		case 0x01:	/* joystick position data */
+		case 0x03:	/* wheel position data */
+
+			if (HI(cmd) == 1) {
+				input_report_abs(dev, ABS_X, (__s16) (((__s16)data[1] << 8) | data[0]));
+				input_report_abs(dev, ABS_Y, (__s16) (((__s16)data[3] << 8) | data[2]));
+				input_report_abs(dev, ABS_THROTTLE, 255 - data[4]);
+				if (LO(cmd) >= 8 && test_bit(ABS_RUDDER ,dev->absbit))
+					input_report_abs(dev, ABS_RUDDER, (__s8)data[7]);
+			} else {
+				input_report_abs(dev, ABS_WHEEL, (__s16) (((__s16)data[1] << 8) | data[0]));
+				input_report_abs(dev, ABS_GAS,   255 - data[2]);
+				input_report_abs(dev, ABS_BRAKE, 255 - data[3]);
+			}
+
+			input_report_abs(dev, ABS_HAT0X, iforce_hat_to_axis[data[6] >> 4].x);
+			input_report_abs(dev, ABS_HAT0Y, iforce_hat_to_axis[data[6] >> 4].y);
+
+			for (i = 0; iforce->type->btn[i] >= 0; i++)
+				input_report_key(dev, iforce->type->btn[i], data[(i >> 3) + 5] & (1 << (i & 7)));
+
+			/* If there are untouched bits left, interpret them as the second hat */
+			if (i <= 8) {
+				int btns = data[6];
+				if (test_bit(ABS_HAT1X, dev->absbit)) {
+					if (btns & 8) input_report_abs(dev, ABS_HAT1X, -1);
+					else if (btns & 2) input_report_abs(dev, ABS_HAT1X, 1);
+					else input_report_abs(dev, ABS_HAT1X, 0);
+				}
+				if (test_bit(ABS_HAT1Y, dev->absbit)) {
+					if (btns & 1) input_report_abs(dev, ABS_HAT1Y, -1);
+					else if (btns & 4) input_report_abs(dev, ABS_HAT1Y, 1);
+					else input_report_abs(dev, ABS_HAT1Y, 0);
+				}
+			}
+
+			break;
+
+		case 0x02:	/* status report */
+			input_report_key(dev, BTN_DEAD, data[0] & 0x02);
+
+			/* Check if an effect was just started or stopped */
+			i = data[1] & 0x7f;
+			if (data[1] & 0x80) {
+				if (!test_and_set_bit(FF_CORE_IS_PLAYED, iforce->core_effects[i].flags)) {
+				/* Report play event */
+				input_report_ff_status(dev, i, FF_STATUS_PLAYING);
+				}
+			}
+			else if (test_and_clear_bit(FF_CORE_IS_PLAYED, iforce->core_effects[i].flags)) {
+				/* Report stop event */
+				input_report_ff_status(dev, i, FF_STATUS_STOPPED);
+			}
+			if (LO(cmd) > 3) {
+				int j;
+				for (j=3; j<LO(cmd); j+=2) {
+					mark_core_as_ready(iforce, data[j] | (data[j+1]<<8));
+				}
+			}
+			break;
+	}
+	being_used--;
+}
+
+int iforce_get_id_packet(struct iforce *iforce, char *packet)
+{
+	DECLARE_WAITQUEUE(wait, current);
+	int timeout = HZ; /* 1 second */
+
+	switch (iforce->bus) {
+
+	case IFORCE_USB:
+
+#ifdef IFORCE_USB
+		iforce->cr.bRequest = packet[0];
+		iforce->ctrl->dev = iforce->usbdev;
+
+		set_current_state(TASK_INTERRUPTIBLE);
+		add_wait_queue(&iforce->wait, &wait);
+
+		if (usb_submit_urb(iforce->ctrl, GFP_KERNEL)) {
+			set_current_state(TASK_RUNNING);
+			remove_wait_queue(&iforce->wait, &wait);
+			return -1;
+		}
+
+		while (timeout && iforce->ctrl->status == -EINPROGRESS)
+			timeout = schedule_timeout(timeout);
+
+		set_current_state(TASK_RUNNING);
+		remove_wait_queue(&iforce->wait, &wait);
+
+		if (!timeout) {
+			usb_unlink_urb(iforce->ctrl);
+			return -1;
+		}
+#else
+		printk(KERN_ERR "iforce_get_id_packet: iforce->bus = USB!\n");
+#endif
+		break;
+
+	case IFORCE_232:
+
+#ifdef IFORCE_232
+		iforce->expect_packet = FF_CMD_QUERY;
+		iforce_send_packet(iforce, FF_CMD_QUERY, packet);
+
+		set_current_state(TASK_INTERRUPTIBLE);
+		add_wait_queue(&iforce->wait, &wait);
+
+		while (timeout && iforce->expect_packet)
+			timeout = schedule_timeout(timeout);
+
+		set_current_state(TASK_RUNNING);
+		remove_wait_queue(&iforce->wait, &wait);
+
+		if (!timeout) {
+			iforce->expect_packet = 0;
+			return -1;
+		}
+#else
+		printk(KERN_ERR "iforce_get_id_packet: iforce->bus = SERIO!\n");
+#endif
+		break;
+
+	default:
+		printk(KERN_ERR "iforce_get_id_packet: iforce->bus = %d\n",
+		       iforce->bus);
+		break;
+	}
+
+	return -(iforce->edata[0] != packet[0]);
+}
+

drivers/input/joystick/iforce/iforce-serio.c

+/*
+ * $Id: iforce-serio.c,v 1.4 2002/01/28 22:45:00 jdeneux Exp $
+ *
+ *  Copyright (c) 2000-2001 Vojtech Pavlik <vojtech@ucw.cz>
+ *  Copyright (c) 2001 Johann Deneux <deneux@ifrance.com>
+ *
+ *  USB/RS232 I-Force joysticks and wheels.
+ */
+
+/*
+ * 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, Simunkova 1594, Prague 8, 182 00 Czech Republic
+ */
+
+#include "iforce.h"
+
+void iforce_serial_xmit(struct iforce *iforce)
+{
+	unsigned char cs;
+	int i;
+	unsigned long flags;
+
+	if (test_and_set_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags)) {
+		set_bit(IFORCE_XMIT_AGAIN, iforce->xmit_flags);
+		return;
+	}
+
+	spin_lock_irqsave(&iforce->xmit_lock, flags);
+
+again:
+	if (iforce->xmit.head == iforce->xmit.tail) {
+		clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
+		spin_unlock_irqrestore(&iforce->xmit_lock, flags);
+		return;
+	}
+
+	cs = 0x2b;
+
+	serio_write(iforce->serio, 0x2b);
+
+	serio_write(iforce->serio, iforce->xmit.buf[iforce->xmit.tail]);
+	cs ^= iforce->xmit.buf[iforce->xmit.tail];
+	XMIT_INC(iforce->xmit.tail, 1);
+
+	for (i=iforce->xmit.buf[iforce->xmit.tail]; i >= 0; --i) {
+		serio_write(iforce->serio, iforce->xmit.buf[iforce->xmit.tail]);
+		cs ^= iforce->xmit.buf[iforce->xmit.tail];
+		XMIT_INC(iforce->xmit.tail, 1);
+	}
+	
+	serio_write(iforce->serio, cs);
+
+	if (test_and_clear_bit(IFORCE_XMIT_AGAIN, iforce->xmit_flags))
+		goto again;
+
+	clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
+
+	spin_unlock_irqrestore(&iforce->xmit_lock, flags);
+}
+
+static void iforce_serio_write_wakeup(struct serio *serio)
+{
+	iforce_serial_xmit((struct iforce *)serio->private);
+}
+
+static void iforce_serio_irq(struct serio *serio, unsigned char data, unsigned int flags)
+{
+	struct iforce* iforce = serio->private;
+
+	if (!iforce->pkt) {
+		if (data != 0x2b) {
+			return;
+		}
+		iforce->pkt = 1;
+		return;
+	}
+
+	if (!iforce->id) {
+		if (data > 3 && data != 0xff) {
+			iforce->pkt = 0;
+			return;
+		}
+		iforce->id = data;
+		return;
+	}
+
+	if (!iforce->len) {
+		if (data > IFORCE_MAX_LENGTH) {
+			iforce->pkt = 0;
+			iforce->id = 0;
+			return;
+		}
+		iforce->len = data;
+		return;
+	}
+
+	if (iforce->idx < iforce->len) {
+		iforce->csum += iforce->data[iforce->idx++] = data;
+		return;
+	}
+
+	if (iforce->idx == iforce->len) {
+		iforce_process_packet(iforce, (iforce->id << 8) | iforce->idx, iforce->data);
+		iforce->pkt = 0;
+		iforce->id  = 0;
+		iforce->len = 0;
+		iforce->idx = 0;
+		iforce->csum = 0;
+	}
+}
+
+static void iforce_serio_connect(struct serio *serio, struct serio_dev *dev)
+{
+	struct iforce *iforce;
+	if (serio->type != (SERIO_RS232 | SERIO_IFORCE))
+		return;
+
+	if (!(iforce = kmalloc(sizeof(struct iforce), GFP_KERNEL))) return;
+	memset(iforce, 0, sizeof(struct iforce));
+
+	iforce->bus = IFORCE_232;
+	iforce->serio = serio;
+	serio->private = iforce;
+
+	if (serio_open(serio, dev)) {
+		kfree(iforce);
+		return;
+	}
+
+	if (iforce_init_device(iforce)) {
+		serio_close(serio);
+		kfree(iforce);
+		return;
+	}
+}
+
+static void iforce_serio_disconnect(struct serio *serio)
+{
+	struct iforce* iforce = serio->private;
+
+	input_unregister_device(&iforce->dev);
+	serio_close(serio);
+	kfree(iforce);
+}
+
+struct serio_dev iforce_serio_dev = {
+	write_wakeup:	iforce_serio_write_wakeup,
+	interrupt:	iforce_serio_irq,
+	connect:	iforce_serio_connect,
+	disconnect:	iforce_serio_disconnect,
+};

drivers/input/joystick/iforce/iforce-usb.c

+ /*
+ * $Id: iforce-usb.c,v 1.16 2002/06/09 11:08:04 jdeneux Exp $
+ *
+ *  Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
+ *  Copyright (c) 2001-2002 Johann Deneux <deneux@ifrance.com>
+ *
+ *  USB/RS232 I-Force joysticks and wheels.
+ */
+
+/*
+ * 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, Simunkova 1594, Prague 8, 182 00 Czech Republic
+ */
+
+#include "iforce.h"
+
+void iforce_usb_xmit(struct iforce *iforce)
+{
+	int n, c;
+	unsigned long flags;
+
+	spin_lock_irqsave(&iforce->xmit_lock, flags);
+
+	if (iforce->xmit.head == iforce->xmit.tail) {
+		clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
+		spin_unlock_irqrestore(&iforce->xmit_lock, flags);
+		return;
+	}
+
+	((char *)iforce->out->transfer_buffer)[0] = iforce->xmit.buf[iforce->xmit.tail];
+	XMIT_INC(iforce->xmit.tail, 1);
+	n = iforce->xmit.buf[iforce->xmit.tail];
+	XMIT_INC(iforce->xmit.tail, 1);
+
+	iforce->out->transfer_buffer_length = n + 1;
+	iforce->out->dev = iforce->usbdev;
+
+	/* Copy rest of data then */
+	c = CIRC_CNT_TO_END(iforce->xmit.head, iforce->xmit.tail, XMIT_SIZE);
+	if (n < c) c=n;
+
+	memcpy(iforce->out->transfer_buffer + 1,
+	       &iforce->xmit.buf[iforce->xmit.tail],
+	       c);
+	if (n != c) {
+		memcpy(iforce->out->transfer_buffer + 1 + c,
+		       &iforce->xmit.buf[0],
+		       n-c);
+	}
+	XMIT_INC(iforce->xmit.tail, n);
+
+	if ( (n=usb_submit_urb(iforce->out, GFP_ATOMIC)) ) {
+		printk(KERN_WARNING "iforce-usb.c: iforce_usb_xmit: usb_submit_urb failed %d\n", n);
+	}
+
+	/* The IFORCE_XMIT_RUNNING bit is not cleared here. That's intended.
+	 * As long as the urb completion handler is not called, the transmiting
+	 * is considered to be running */
+	spin_unlock_irqrestore(&iforce->xmit_lock, flags);
+}
+
+static void iforce_usb_irq(struct urb *urb)
+{
+	struct iforce *iforce = urb->context;
+	if (urb->status) return;
+	iforce_process_packet(iforce,
+		(iforce->data[0] << 8) | (urb->actual_length - 1), iforce->data + 1);
+}
+
+static void iforce_usb_out(struct urb *urb)
+{
+	struct iforce *iforce = urb->context;
+
+	if (urb->status) {
+		printk(KERN_DEBUG "iforce_usb_out: urb->status %d, exiting", urb->status);
+		return;
+	}
+
+	iforce_usb_xmit(iforce);
+
+	if (waitqueue_active(&iforce->wait))
+		wake_up(&iforce->wait);
+}
+
+static void iforce_usb_ctrl(struct urb *urb)
+{
+	struct iforce *iforce = urb->context;
+	if (urb->status) return;
+	iforce->ecmd = 0xff00 | urb->actual_length;
+	if (waitqueue_active(&iforce->wait))
+		wake_up(&iforce->wait);
+}
+
+static void *iforce_usb_probe(struct usb_device *dev, unsigned int ifnum,
+				const struct usb_device_id *id)
+{
+	struct usb_endpoint_descriptor *epirq, *epout;
+	struct iforce *iforce;
+
+	epirq = dev->config[0].interface[ifnum].altsetting[0].endpoint + 0;
+	epout = dev->config[0].interface[ifnum].altsetting[0].endpoint + 1;
+
+	if (!(iforce = kmalloc(sizeof(struct iforce) + 32, GFP_KERNEL)))
+		goto fail;
+
+	memset(iforce, 0, sizeof(struct iforce));
+
+	if (!(iforce->irq = usb_alloc_urb(0, GFP_KERNEL))) {
+		goto fail;
+	}
+
+	if (!(iforce->out = usb_alloc_urb(0, GFP_KERNEL))) {
+		goto fail;
+	}
+
+	if (!(iforce->ctrl = usb_alloc_urb(0, GFP_KERNEL))) {
+		goto fail;
+	}
+
+	iforce->bus = IFORCE_USB;
+	iforce->usbdev = dev;
+
+	iforce->cr.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_INTERFACE;
+	iforce->cr.wIndex = 0;
+	iforce->cr.wLength = 16;
+
+	usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress),
+			iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval);
+
+	usb_fill_bulk_urb(iforce->out, dev, usb_sndbulkpipe(dev, epout->bEndpointAddress),
+			iforce + 1, 32, iforce_usb_out, iforce);
+
+	usb_fill_control_urb(iforce->ctrl, dev, usb_rcvctrlpipe(dev, 0),
+			(void*) &iforce->cr, iforce->edata, 16, iforce_usb_ctrl, iforce);
+
+	if (iforce_init_device(iforce)) goto fail;
+
+	return iforce;
+
+fail:
+	if (iforce) {
+		if (iforce->irq) usb_free_urb(iforce->irq);
+		if (iforce->out) usb_free_urb(iforce->out);
+		if (iforce->ctrl) usb_free_urb(iforce->ctrl);
+		kfree(iforce);
+	}
+
+	return NULL;
+}
+
+/* Called by iforce_delete() */
+void iforce_usb_delete(struct iforce* iforce)
+{
+	usb_unlink_urb(iforce->irq);
+/* Is it ok to unlink those ? */
+	usb_unlink_urb(iforce->out);
+	usb_unlink_urb(iforce->ctrl);
+
+	usb_free_urb(iforce->irq);
+	usb_free_urb(iforce->out);
+	usb_free_urb(iforce->ctrl);
+}
+
+static void iforce_usb_disconnect(struct usb_device *dev, void *ptr)
+{
+	struct iforce *iforce = ptr;
+	int open = iforce->dev.handle->open;
+
+	iforce->usbdev = NULL;
+	input_unregister_device(&iforce->dev);
+
+	if (!open) {
+		iforce_delete_device(iforce);
+		kfree(iforce);
+	}
+}
+
+static struct usb_device_id iforce_usb_ids [] = {
+	{ USB_DEVICE(0x044f, 0xa01c) },		/* Thrustmaster Motor Sport GT */
+	{ USB_DEVICE(0x046d, 0xc281) },		/* Logitech WingMan Force */
+	{ USB_DEVICE(0x046d, 0xc291) },		/* Logitech WingMan Formula Force */
+	{ USB_DEVICE(0x05ef, 0x020a) },		/* AVB Top Shot Pegasus */
+	{ USB_DEVICE(0x05ef, 0x8884) },		/* AVB Mag Turbo Force */
+	{ USB_DEVICE(0x05ef, 0x8888) },		/* AVB Top Shot FFB Racing Wheel */
+	{ USB_DEVICE(0x061c, 0xc0a4) },         /* ACT LABS Force RS */
+	{ USB_DEVICE(0x06f8, 0x0001) },		/* Guillemot Race Leader Force Feedback */
+	{ USB_DEVICE(0x06f8, 0x0004) },		/* Guillemot Force Feedback Racing Wheel */
+	{ }					/* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE (usb, iforce_usb_ids);
+
+struct usb_driver iforce_usb_driver = {
+	owner:		THIS_MODULE,
+	name:		"iforce",
+	probe:		iforce_usb_probe,
+	disconnect:	iforce_usb_disconnect,
+	id_table:	iforce_usb_ids,
+};

drivers/input/joystick/iforce/iforce.h

+/*
+ * $Id: iforce.h,v 1.12 2002/06/09 11:08:04 jdeneux Exp $
+ *
+ *  Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
+ *  Copyright (c) 2001-2002 Johann Deneux <deneux@ifrance.com>
+ *
+ *  USB/RS232 I-Force joysticks and wheels.
+ */
+
+/*
+ * 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, Simunkova 1594, Prague 8, 182 00 Czech Republic
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/usb.h>
+#include <linux/serio.h>
+#include <linux/config.h>
+#include <linux/circ_buf.h>
+#include <asm/semaphore.h>
+
+/* FF: This module provides arbitrary resource management routines.
+ * I use it to manage the device's memory.
+ * Despite the name of this module, I am *not* going to access the ioports.
+ */
+#include <linux/ioport.h>
+
+#define IFORCE_MAX_LENGTH	16
+
+#if defined(CONFIG_JOYSTICK_IFORCE_232)
+#define IFORCE_232	1
+#endif
+#if defined(CONFIG_JOYSTICK_IFORCE_USB)
+#define IFORCE_USB	2
+#endif
+
+#define FALSE 0
+#define TRUE 1
+
+#define FF_EFFECTS_MAX	32
+
+/* Each force feedback effect is made of one core effect, which can be
+ * associated to at most to effect modifiers
+ */
+#define FF_MOD1_IS_USED		0
+#define FF_MOD2_IS_USED		1
+#define FF_CORE_IS_USED		2
+#define FF_CORE_IS_PLAYED	3	/* Effect is currently being played */
+#define FF_CORE_SHOULD_PLAY	4	/* User wants the effect to be played */
+#define FF_CORE_UPDATE		5	/* Effect is being updated */
+#define FF_MODCORE_MAX		5
+
+#define CHECK_OWNERSHIP(i, iforce)	\
+	((i) < FF_EFFECTS_MAX && i >= 0 && \
+	test_bit(FF_CORE_IS_USED, (iforce)->core_effects[(i)].flags) && \
+	(current->pid == 0 || \
+	(iforce)->core_effects[(i)].owner == current->pid))
+
+struct iforce_core_effect {
+	/* Information about where modifiers are stored in the device's memory */
+	struct resource mod1_chunk;
+	struct resource mod2_chunk;
+	unsigned long flags[NBITS(FF_MODCORE_MAX)];
+	pid_t owner;
+	/* Used to keep track of parameters of an effect. They are needed
+	 * to know what parts of an effect changed in an update operation.
+	 * We try to send only parameter packets if possible, as sending
+	 * effect parameter requires the effect to be stoped and restarted
+	 */
+	struct ff_effect effect;
+};
+
+#define FF_CMD_EFFECT		0x010e
+#define FF_CMD_ENVELOPE		0x0208
+#define FF_CMD_MAGNITUDE	0x0303
+#define FF_CMD_PERIOD		0x0407
+#define FF_CMD_CONDITION	0x050a
+
+#define FF_CMD_AUTOCENTER	0x4002
+#define FF_CMD_PLAY		0x4103
+#define FF_CMD_ENABLE		0x4201
+#define FF_CMD_GAIN		0x4301
+
+#define FF_CMD_QUERY		0xff01
+
+/* Buffer for async write */
+#define XMIT_SIZE		256
+#define XMIT_INC(var, n)	(var)+=n; (var)&= XMIT_SIZE -1
+/* iforce::xmit_flags */
+#define IFORCE_XMIT_RUNNING	0
+#define IFORCE_XMIT_AGAIN	1
+
+struct iforce_device {
+	u16 idvendor;
+	u16 idproduct;
+	char *name;
+	signed short *btn;
+	signed short *abs;
+	signed short *ff;
+};
+
+struct iforce {
+	struct input_dev dev;		/* Input device interface */
+	struct iforce_device *type;
+	int bus;
+
+	unsigned char data[IFORCE_MAX_LENGTH];
+	unsigned char edata[IFORCE_MAX_LENGTH];
+	u16 ecmd;
+	u16 expect_packet;
+
+#ifdef IFORCE_232
+	struct serio *serio;		/* RS232 transfer */
+	int idx, pkt, len, id;
+	unsigned char csum;
+#endif
+#ifdef IFORCE_USB
+	struct usb_device *usbdev;	/* USB transfer */
+	struct urb *irq, *out, *ctrl;
+	struct usb_ctrlrequest cr;
+#endif
+	spinlock_t xmit_lock;
+	/* Buffer used for asynchronous sending of bytes to the device */
+	struct circ_buf xmit;
+	unsigned char xmit_data[XMIT_SIZE];
+	long xmit_flags[1];
+	
+					/* Force Feedback */
+	wait_queue_head_t wait;
+	struct resource device_memory;
+	struct iforce_core_effect core_effects[FF_EFFECTS_MAX];
+	struct semaphore mem_mutex;
+};
+
+/* Get hi and low bytes of a 16-bits int */
+#define HI(a)	((unsigned char)((a) >> 8))
+#define LO(a)	((unsigned char)((a) & 0xff))
+
+/* For many parameters, it seems that 0x80 is a special value that should
+ * be avoided. Instead, we replace this value by 0x7f
+ */
+#define HIFIX80(a) ((unsigned char)(((a)<0? (a)+255 : (a))>>8))
+
+/* Encode a time value */
+#define TIME_SCALE(a)	(a)
+
+
+/* Public functions */
+/* iforce-serio.c */
+void iforce_serial_xmit(struct iforce *iforce);
+
+/* iforce-usb.c */
+void iforce_usb_xmit(struct iforce *iforce);
+void iforce_usb_delete(struct iforce *iforce);
+
+/* iforce-main.c */
+int iforce_init_device(struct iforce *iforce);
+void iforce_delete_device(struct iforce *iforce);
+
+/* iforce-packets.c */
+int iforce_control_playback(struct iforce*, u16 id, unsigned int);
+void iforce_process_packet(struct iforce *iforce, u16 cmd, unsigned char *data);
+int iforce_send_packet(struct iforce *iforce, u16 cmd, unsigned char* data);
+void iforce_dump_packet(char *msg, u16 cmd, unsigned char *data) ;
+int iforce_get_id_packet(struct iforce *iforce, char *packet);
+
+/* iforce-ff.c */
+int iforce_upload_periodic(struct iforce*, struct ff_effect*, int is_update);
+int iforce_upload_constant(struct iforce*, struct ff_effect*, int is_update);
+int iforce_upload_condition(struct iforce*, struct ff_effect*, int is_update);
+
+/* Public variables */
+extern struct serio_dev iforce_serio_dev;
+extern struct usb_driver iforce_usb_driver;

drivers/input/joystick/twidjoy.c

+/*
+ * $Id: twidjoy.c,v 1.5 2002/01/22 20:31:53 vojtech Exp $
+ *
+ *  derived from CVS-ID "stinger.c,v 1.5 2001/05/29 12:57:18 vojtech Exp"
+ *
+ *  Copyright (c) 2001 Arndt Schoenewald
+ *  Copyright (c) 2000-2001 Vojtech Pavlik
+ *  Copyright (c) 2000 Mark Fletcher
+ *
+ *  Sponsored by Quelltext AG (http://www.quelltext-ag.de), Dortmund, Germany
+ */
+
+/*
+ * Driver to use Handykey's Twiddler (the first edition, i.e. the one with
+ * the RS232 interface) as a joystick under Linux
+ *
+ * The Twiddler is a one-handed chording keyboard featuring twelve buttons on
+ * the front, six buttons on the top, and a built-in tilt sensor. The buttons
+ * on the front, which are grouped as four rows of three buttons, are pressed
+ * by the four fingers (this implies only one button per row can be held down
+ * at the same time) and the buttons on the top are for the thumb. The tilt
+ * sensor delivers X and Y axis data depending on how the Twiddler is held.
+ * Additional information can be found at http://www.handykey.com.
+ *
+ * This driver does not use the Twiddler for its intended purpose, i.e. as
+ * a chording keyboard, but as a joystick: pressing and releasing a button
+ * immediately sends a corresponding button event, and tilting it generates
+ * corresponding ABS_X and ABS_Y events. This turns the Twiddler into a game
+ * controller with amazing 18 buttons :-)
+ *
+ * Note: The Twiddler2 (the successor of the Twiddler that connects directly
+ * to the PS/2 keyboard and mouse ports) is NOT supported by this driver!
+ *
+ * For questions or feedback regarding this driver module please contact:
+ * Arndt Schoenewald <arndt@quelltext.com>
+ */
+
+/*
+ * 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
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/serio.h>
+#include <linux/init.h>
+
+/*
+ * Constants.
+ */
+
+#define TWIDJOY_MAX_LENGTH 5
+
+static char *twidjoy_name = "Handykey Twiddler";
+
+static struct twidjoy_button_spec {
+	int bitshift;
+	int bitmask;
+	int buttons[3];
+}
+twidjoy_buttons[] = {
+	{  0, 3, { BTN_A,      BTN_B,     BTN_C    } },
+	{  2, 3, { BTN_X,      BTN_Y,     BTN_Z    } },
+	{  4, 3, { BTN_TL,     BTN_TR,    BTN_TR2  } },
+	{  6, 3, { BTN_SELECT, BTN_START, BTN_MODE } },
+	{  8, 1, { BTN_BASE5                       } },
+	{  9, 1, { BTN_BASE                        } },
+	{ 10, 1, { BTN_BASE3                       } },
+	{ 11, 1, { BTN_BASE4                       } },
+	{ 12, 1, { BTN_BASE2                       } },
+	{ 13, 1, { BTN_BASE6                       } },
+	{ 0,  0, { 0                               } }
+};
+
+/*
+ * Per-Twiddler data.
+ */
+
+struct twidjoy {
+	struct input_dev dev;
+	int idx;
+	unsigned char data[TWIDJOY_MAX_LENGTH];
+	char phys[32];
+};
+
+/*
+ * twidjoy_process_packet() decodes packets the driver receives from the
+ * Twiddler. It updates the data accordingly.
+ */
+
+static void twidjoy_process_packet(struct twidjoy *twidjoy)
+{
+	if (twidjoy->idx == TWIDJOY_MAX_LENGTH) {
+		struct input_dev *dev = &twidjoy->dev;
+		unsigned char *data = twidjoy->data;
+		struct twidjoy_button_spec *bp;
+		int button_bits, abs_x, abs_y;
+
+		button_bits = ((data[1] & 0x7f) << 7) | (data[0] & 0x7f);
+
+		for (bp = twidjoy_buttons; bp->bitmask; bp++) {
+			int value = (button_bits & (bp->bitmask << bp->bitshift)) >> bp->bitshift;
+			int i;
+
+			for (i = 0; i < bp->bitmask; i++)
+				input_report_key(dev, bp->buttons[i], i+1 == value);
+		}
+
+		abs_x = ((data[4] & 0x07) << 5) | ((data[3] & 0x7C) >> 2);
+		if (data[4] & 0x08) abs_x -= 256;
+
+		abs_y = ((data[3] & 0x01) << 7) | ((data[2] & 0x7F) >> 0);
+		if (data[3] & 0x02) abs_y -= 256;
+
+		input_report_abs(dev, ABS_X, -abs_x);
+		input_report_abs(dev, ABS_Y, +abs_y);
+	}
+
+	return;
+}
+
+/*
+ * twidjoy_interrupt() 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 twidjoy_interrupt(struct serio *serio, unsigned char data, unsigned int flags)
+{
+	struct twidjoy *twidjoy = serio->private;
+
+	/* All Twiddler packets are 5 bytes. The fact that the first byte
+	 * has a MSB of 0 and all other bytes have a MSB of 1 can be used
+	 * to check and regain sync. */
+
+	if ((data & 0x80) == 0)
+		twidjoy->idx = 0;	/* this byte starts a new packet */
+	else if (twidjoy->idx == 0)
+		return;			/* wrong MSB -- ignore this byte */
+
+	if (twidjoy->idx < TWIDJOY_MAX_LENGTH)
+		twidjoy->data[twidjoy->idx++] = data;
+
+	if (twidjoy->idx == TWIDJOY_MAX_LENGTH) {
+		twidjoy_process_packet(twidjoy);
+		twidjoy->idx = 0;
+	}
+
+	return;
+}
+
+/*
+ * twidjoy_disconnect() is the opposite of twidjoy_connect()
+ */
+
+static void twidjoy_disconnect(struct serio *serio)
+{
+	struct twidjoy *twidjoy = serio->private;
+	input_unregister_device(&twidjoy->dev);
+	serio_close(serio);
+	kfree(twidjoy);
+}
+
+/*
+ * twidjoy_connect() is the routine that is called when someone adds a
+ * new serio device. It looks for the Twiddler, and if found, registers
+ * it as an input device.
+ */
+
+static void twidjoy_connect(struct serio *serio, struct serio_dev *dev)
+{
+	struct twidjoy_button_spec *bp;
+	struct twidjoy *twidjoy;
+	int i;
+
+	if (serio->type != (SERIO_RS232 | SERIO_TWIDJOY))
+		return;
+
+	if (!(twidjoy = kmalloc(sizeof(struct twidjoy), GFP_KERNEL)))
+		return;
+
+	memset(twidjoy, 0, sizeof(struct twidjoy));
+
+	sprintf(twidjoy->phys, "%s/input0", serio->phys);
+
+	twidjoy->dev.name = twidjoy_name;
+	twidjoy->dev.phys = twidjoy->phys;
+	twidjoy->dev.idbus = BUS_RS232;
+	twidjoy->dev.idvendor = SERIO_TWIDJOY;
+	twidjoy->dev.idproduct = 0x0001;
+	twidjoy->dev.idversion = 0x0100;
+
+	twidjoy->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);	
+
+	for (bp = twidjoy_buttons; bp->bitmask; bp++) {
+		for (i = 0; i < bp->bitmask; i++)
+			set_bit(bp->buttons[i], twidjoy->dev.keybit);
+	}
+
+	twidjoy->dev.absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
+
+	for (i = 0; i < 2; i++) {
+		twidjoy->dev.absmax[ABS_X+i] =  50;	
+		twidjoy->dev.absmin[ABS_X+i] = -50;	
+
+		/* TODO: arndt 20010708: Are these values appropriate? */
+		twidjoy->dev.absfuzz[ABS_X+i] = 4;
+		twidjoy->dev.absflat[ABS_X+i] = 4;
+	}
+
+	twidjoy->dev.private = twidjoy;
+	
+	serio->private = twidjoy;
+
+	if (serio_open(serio, dev)) {
+		kfree(twidjoy);
+		return;
+	}
+
+	input_register_device(&twidjoy->dev);
+
+	printk(KERN_INFO "input: %s on %s\n", twidjoy_name, serio->phys);
+}
+
+/*
+ * The serio device structure.
+ */
+
+static struct serio_dev twidjoy_dev = {
+	interrupt:	twidjoy_interrupt,
+	connect:	twidjoy_connect,
+	disconnect:	twidjoy_disconnect,
+};
+
+/*
+ * The functions for inserting/removing us as a module.
+ */
+
+int __init twidjoy_init(void)
+{
+	serio_register_device(&twidjoy_dev);
+	return 0;
+}
+
+void __exit twidjoy_exit(void)
+{
+	serio_unregister_device(&twidjoy_dev);
+}
+
+module_init(twidjoy_init);
+module_exit(twidjoy_exit);