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/*
* $Id: tmdc.c,v 1.23 2000/11/29 19:52:24 vojtech Exp $
*
* Copyright (c) 1998-2000 Vojtech Pavlik
*
* Sponsored by SuSE
*
* Based on the work of:
* Trystan Larey-Williams
*
*/
/*
* ThrustMaster DirectConnect (BSP) joystick family 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/delay.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/gameport.h>
#include <linux/input.h>
#define TMDC_MAX_START 400 /* 400 us */
#define TMDC_MAX_STROBE 45 /* 45 us */
#define TMDC_MAX_LENGTH 13
#define TMDC_REFRESH_TIME HZ/50 /* 20 ms */
#define TMDC_MODE_M3DI 1
#define TMDC_MODE_3DRP 3
#define TMDC_MODE_AT 4
#define TMDC_MODE_FM 8
#define TMDC_MODE_FGP 163
#define TMDC_BYTE_ID 10
#define TMDC_BYTE_REV 11
#define TMDC_BYTE_DEF 12
#define TMDC_ABS 7
#define TMDC_ABS_HAT 4
#define TMDC_BTN 16
static unsigned char tmdc_byte_a[16] = { 0, 1, 3, 4, 6, 7 };
static unsigned char tmdc_byte_d[16] = { 2, 5, 8, 9 };
static signed char tmdc_abs[TMDC_ABS] =
{ ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE, ABS_RX, ABS_RY, ABS_RZ };
static signed char tmdc_abs_hat[TMDC_ABS_HAT] =
{ ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y };
static signed char tmdc_abs_at[TMDC_ABS] =
{ ABS_X, ABS_Y, ABS_RUDDER, -1, ABS_THROTTLE };
static signed char tmdc_abs_fm[TMDC_ABS] =
{ ABS_RX, ABS_RY, ABS_X, ABS_Y };
static short tmdc_btn_pad[TMDC_BTN] =
{ BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_START, BTN_SELECT, BTN_TL, BTN_TR };
static short tmdc_btn_joy[TMDC_BTN] =
{ BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_THUMB2, BTN_PINKIE,
BTN_BASE3, BTN_BASE4, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z };
static short tmdc_btn_fm[TMDC_BTN] =
{ BTN_TRIGGER, BTN_C, BTN_B, BTN_A, BTN_THUMB, BTN_X, BTN_Y, BTN_Z, BTN_TOP, BTN_TOP2 };
static short tmdc_btn_at[TMDC_BTN] =
{ BTN_TRIGGER, BTN_THUMB2, BTN_PINKIE, BTN_THUMB, BTN_BASE6, BTN_BASE5, BTN_BASE4,
BTN_BASE3, BTN_BASE2, BTN_BASE };
static struct {
int x;
int y;
} tmdc_hat_to_axis[] = {{ 0, 0}, { 1, 0}, { 0,-1}, {-1, 0}, { 0, 1}};
struct tmdc {
struct gameport *gameport;
struct timer_list timer;
struct input_dev dev[2];
char name[2][64];
int mode[2];
signed char *abs[2];
short *btn[2];
unsigned char absc[2];
unsigned char btnc[2][4];
unsigned char btno[2][4];
int used;
int reads;
int bads;
unsigned char exists;
};
/*
* tmdc_read_packet() reads a ThrustMaster packet.
*/
static int tmdc_read_packet(struct gameport *gameport, unsigned char data[2][TMDC_MAX_LENGTH])
{
unsigned char u, v, w, x;
unsigned long flags;
int i[2], j[2], t[2], p, k;
p = gameport_time(gameport, TMDC_MAX_STROBE);
for (k = 0; k < 2; k++) {
t[k] = gameport_time(gameport, TMDC_MAX_START);
i[k] = j[k] = 0;
}
__save_flags(flags);
__cli();
gameport_trigger(gameport);
w = gameport_read(gameport) >> 4;
do {
x = w;
w = gameport_read(gameport) >> 4;
for (k = 0, v = w, u = x; k < 2; k++, v >>= 2, u >>= 2) {
if (~v & u & 2) {
if (t[k] <= 0 || i[k] >= TMDC_MAX_LENGTH) continue;
t[k] = p;
if (j[k] == 0) { /* Start bit */
if (~v & 1) t[k] = 0;
data[k][i[k]] = 0; j[k]++; continue;
}
if (j[k] == 9) { /* Stop bit */
if (v & 1) t[k] = 0;
j[k] = 0; i[k]++; continue;
}
data[k][i[k]] |= (~v & 1) << (j[k]++ - 1); /* Data bit */
}
t[k]--;
}
} while (t[0] > 0 || t[1] > 0);
__restore_flags(flags);
return (i[0] == TMDC_MAX_LENGTH) | ((i[1] == TMDC_MAX_LENGTH) << 1);
}
/*
* tmdc_read() reads and analyzes ThrustMaster joystick data.
*/
static void tmdc_timer(unsigned long private)
{
unsigned char data[2][TMDC_MAX_LENGTH];
struct tmdc *tmdc = (void *) private;
struct input_dev *dev;
unsigned char r, bad = 0;
int i, j, k, l;
tmdc->reads++;
if ((r = tmdc_read_packet(tmdc->gameport, data)) != tmdc->exists)
bad = 1;
for (j = 0; j < 2; j++)
if (r & (1 << j) & tmdc->exists) {
if (data[j][TMDC_BYTE_ID] != tmdc->mode[j]) {
bad = 1;
continue;
}
dev = tmdc->dev + j;
for (i = 0; i < tmdc->absc[j]; i++) {
if (tmdc->abs[j][i] < 0) continue;
input_report_abs(dev, tmdc->abs[j][i], data[j][tmdc_byte_a[i]]);
}
switch (tmdc->mode[j]) {
case TMDC_MODE_M3DI:
i = tmdc_byte_d[0];
input_report_abs(dev, ABS_HAT0X, ((data[j][i] >> 3) & 1) - ((data[j][i] >> 1) & 1));
input_report_abs(dev, ABS_HAT0Y, ((data[j][i] >> 2) & 1) - ( data[j][i] & 1));
break;
case TMDC_MODE_AT:
i = tmdc_byte_a[3];
input_report_abs(dev, ABS_HAT0X, tmdc_hat_to_axis[(data[j][i] - 141) / 25].x);
input_report_abs(dev, ABS_HAT0Y, tmdc_hat_to_axis[(data[j][i] - 141) / 25].y);
break;
}
for (k = l = 0; k < 4; k++) {
for (i = 0; i < tmdc->btnc[j][k]; i++)
input_report_key(dev, tmdc->btn[j][i + l],
((data[j][tmdc_byte_d[k]] >> (i + tmdc->btno[j][k])) & 1));
l += tmdc->btnc[j][k];
}
}
tmdc->bads += bad;
mod_timer(&tmdc->timer, jiffies + TMDC_REFRESH_TIME);
}
static int tmdc_open(struct input_dev *dev)
{
struct tmdc *tmdc = dev->private;
if (!tmdc->used++)
mod_timer(&tmdc->timer, jiffies + TMDC_REFRESH_TIME);
return 0;
}
static void tmdc_close(struct input_dev *dev)
{
struct tmdc *tmdc = dev->private;
if (!--tmdc->used)
del_timer(&tmdc->timer);
}
/*
* tmdc_probe() probes for ThrustMaster type joysticks.
*/
static void tmdc_connect(struct gameport *gameport, struct gameport_dev *dev)
{
struct models {
unsigned char id;
char *name;
char abs;
char hats;
char btnc[4];
char btno[4];
signed char *axes;
short *buttons;
} models[] = { { 1, "ThrustMaster Millenium 3D Inceptor", 6, 2, { 4, 2 }, { 4, 6 }, tmdc_abs, tmdc_btn_joy },
{ 3, "ThrustMaster Rage 3D Gamepad", 2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
{ 4, "ThrustMaster Attack Throttle", 5, 2, { 4, 6 }, { 4, 2 }, tmdc_abs_at, tmdc_btn_at },
{ 8, "ThrustMaster FragMaster", 4, 0, { 8, 2 }, { 0, 0 }, tmdc_abs_fm, tmdc_btn_fm },
{ 163, "Thrustmaster Fusion GamePad", 2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
{ 0, "Unknown %d-axis, %d-button TM device %d", 0, 0, { 0, 0 }, { 0, 0 }, tmdc_abs, tmdc_btn_joy }};
unsigned char data[2][TMDC_MAX_LENGTH];
struct tmdc *tmdc;
int i, j, k, l, m;
if (!(tmdc = kmalloc(sizeof(struct tmdc), GFP_KERNEL)))
return;
memset(tmdc, 0, sizeof(struct tmdc));
gameport->private = tmdc;
tmdc->gameport = gameport;
init_timer(&tmdc->timer);
tmdc->timer.data = (long) tmdc;
tmdc->timer.function = tmdc_timer;
if (gameport_open(gameport, dev, GAMEPORT_MODE_RAW))
goto fail1;
if (!(tmdc->exists = tmdc_read_packet(gameport, data)))
goto fail2;
for (j = 0; j < 2; j++)
if (tmdc->exists & (1 << j)) {
tmdc->mode[j] = data[j][TMDC_BYTE_ID];
for (m = 0; models[m].id && models[m].id != tmdc->mode[j]; m++);
tmdc->abs[j] = models[m].axes;
tmdc->btn[j] = models[m].buttons;
if (!models[m].id) {
models[m].abs = data[j][TMDC_BYTE_DEF] >> 4;
for (k = 0; k < 4; k++)
models[m].btnc[k] = k < (data[j][TMDC_BYTE_DEF] & 0xf) ? 8 : 0;
}
tmdc->absc[j] = models[m].abs;
for (k = 0; k < 4; k++) {
tmdc->btnc[j][k] = models[m].btnc[k];
tmdc->btno[j][k] = models[m].btno[k];
}
sprintf(tmdc->name[j], models[m].name, models[m].abs,
(data[j][TMDC_BYTE_DEF] & 0xf) << 3, tmdc->mode[j]);
tmdc->dev[j].private = tmdc;
tmdc->dev[j].open = tmdc_open;
tmdc->dev[j].close = tmdc_close;
tmdc->dev[j].name = tmdc->name[j];
tmdc->dev[j].idbus = BUS_GAMEPORT;
tmdc->dev[j].idvendor = GAMEPORT_ID_VENDOR_THRUSTMASTER;
tmdc->dev[j].idproduct = models[m].id;
tmdc->dev[j].idversion = 0x0100;
tmdc->dev[j].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
for (i = 0; i < models[m].abs && i < TMDC_ABS; i++) {
if (tmdc->abs[i] < 0) continue;
set_bit(tmdc->abs[j][i], tmdc->dev[j].absbit);
tmdc->dev[j].absmin[tmdc->abs[j][i]] = 8;
tmdc->dev[j].absmax[tmdc->abs[j][i]] = 248;
tmdc->dev[j].absfuzz[tmdc->abs[j][i]] = 2;
tmdc->dev[j].absflat[tmdc->abs[j][i]] = 4;
}
for (i = 0; i < models[m].hats && i < TMDC_ABS_HAT; i++) {
set_bit(tmdc_abs_hat[i], tmdc->dev[j].absbit);
tmdc->dev[j].absmin[tmdc_abs_hat[i]] = -1;
tmdc->dev[j].absmax[tmdc_abs_hat[i]] = 1;
}
for (k = l = 0; k < 4; k++) {
for (i = 0; i < models[m].btnc[k] && i < TMDC_BTN; i++)
set_bit(tmdc->btn[j][i + l], tmdc->dev[j].keybit);
l += models[m].btnc[k];
}
input_register_device(tmdc->dev + j);
printk(KERN_INFO "input%d: %s on gameport%d.%d\n",
tmdc->dev[j].number, tmdc->name[j], gameport->number, j);
}
return;
fail2: gameport_close(gameport);
fail1: kfree(tmdc);
}
static void tmdc_disconnect(struct gameport *gameport)
{
struct tmdc *tmdc = gameport->private;
int i;
for (i = 0; i < 2; i++)
if (tmdc->exists & (1 << i))
input_unregister_device(tmdc->dev + i);
gameport_close(gameport);
kfree(tmdc);
}
static struct gameport_dev tmdc_dev = {
connect: tmdc_connect,
disconnect: tmdc_disconnect,
};
int __init tmdc_init(void)
{
gameport_register_device(&tmdc_dev);
return 0;
}
void __exit tmdc_exit(void)
{
gameport_unregister_device(&tmdc_dev);
}
module_init(tmdc_init);
module_exit(tmdc_exit);
MODULE_LICENSE("GPL");
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