259 lines
6.9 KiB
C
259 lines
6.9 KiB
C
/*
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* $Id: turbografx.c,v 1.14 2002/01/22 20:30:39 vojtech Exp $
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*
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* Copyright (c) 1998-2001 Vojtech Pavlik
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*
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* Based on the work of:
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* Steffen Schwenke
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*/
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/*
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* TurboGraFX parallel port interface driver for Linux.
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Should you need to contact me, the author, you can do so either by
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* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
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* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
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*/
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#include <linux/kernel.h>
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#include <linux/parport.h>
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#include <linux/input.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
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MODULE_DESCRIPTION("TurboGraFX parallel port interface driver");
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MODULE_LICENSE("GPL");
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static int tgfx[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
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static int tgfx_nargs __initdata = 0;
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module_param_array_named(map, tgfx, int, &tgfx_nargs, 0);
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MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<js1>,<js2>,..<js7>");
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static int tgfx_2[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
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static int tgfx_nargs_2 __initdata = 0;
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module_param_array_named(map2, tgfx_2, int, &tgfx_nargs_2, 0);
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MODULE_PARM_DESC(map2, "Describes second set of devices");
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static int tgfx_3[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
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static int tgfx_nargs_3 __initdata = 0;
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module_param_array_named(map3, tgfx_3, int, &tgfx_nargs_3, 0);
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MODULE_PARM_DESC(map3, "Describes third set of devices");
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__obsolete_setup("tgfx=");
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__obsolete_setup("tgfx_2=");
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__obsolete_setup("tgfx_3=");
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#define TGFX_REFRESH_TIME HZ/100 /* 10 ms */
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#define TGFX_TRIGGER 0x08
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#define TGFX_UP 0x10
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#define TGFX_DOWN 0x20
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#define TGFX_LEFT 0x40
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#define TGFX_RIGHT 0x80
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#define TGFX_THUMB 0x02
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#define TGFX_THUMB2 0x04
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#define TGFX_TOP 0x01
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#define TGFX_TOP2 0x08
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static int tgfx_buttons[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2 };
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static char *tgfx_name = "TurboGraFX Multisystem joystick";
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static struct tgfx {
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struct pardevice *pd;
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struct timer_list timer;
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struct input_dev dev[7];
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char phys[7][32];
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int sticks;
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int used;
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} *tgfx_base[3];
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/*
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* tgfx_timer() reads and analyzes TurboGraFX joystick data.
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*/
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static void tgfx_timer(unsigned long private)
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{
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struct tgfx *tgfx = (void *) private;
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struct input_dev *dev;
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int data1, data2, i;
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for (i = 0; i < 7; i++)
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if (tgfx->sticks & (1 << i)) {
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dev = tgfx->dev + i;
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parport_write_data(tgfx->pd->port, ~(1 << i));
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data1 = parport_read_status(tgfx->pd->port) ^ 0x7f;
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data2 = parport_read_control(tgfx->pd->port) ^ 0x04; /* CAVEAT parport */
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input_report_abs(dev, ABS_X, !!(data1 & TGFX_RIGHT) - !!(data1 & TGFX_LEFT));
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input_report_abs(dev, ABS_Y, !!(data1 & TGFX_DOWN ) - !!(data1 & TGFX_UP ));
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input_report_key(dev, BTN_TRIGGER, (data1 & TGFX_TRIGGER));
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input_report_key(dev, BTN_THUMB, (data2 & TGFX_THUMB ));
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input_report_key(dev, BTN_THUMB2, (data2 & TGFX_THUMB2 ));
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input_report_key(dev, BTN_TOP, (data2 & TGFX_TOP ));
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input_report_key(dev, BTN_TOP2, (data2 & TGFX_TOP2 ));
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input_sync(dev);
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}
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mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
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}
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static int tgfx_open(struct input_dev *dev)
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{
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struct tgfx *tgfx = dev->private;
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if (!tgfx->used++) {
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parport_claim(tgfx->pd);
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parport_write_control(tgfx->pd->port, 0x04);
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mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
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}
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return 0;
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}
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static void tgfx_close(struct input_dev *dev)
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{
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struct tgfx *tgfx = dev->private;
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if (!--tgfx->used) {
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del_timer(&tgfx->timer);
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parport_write_control(tgfx->pd->port, 0x00);
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parport_release(tgfx->pd);
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}
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}
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/*
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* tgfx_probe() probes for tg gamepads.
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*/
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static struct tgfx __init *tgfx_probe(int *config, int nargs)
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{
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struct tgfx *tgfx;
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struct parport *pp;
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int i, j;
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if (config[0] < 0)
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return NULL;
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if (nargs < 2) {
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printk(KERN_ERR "turbografx.c: at least one joystick must be specified\n");
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return NULL;
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}
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pp = parport_find_number(config[0]);
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if (!pp) {
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printk(KERN_ERR "turbografx.c: no such parport\n");
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return NULL;
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}
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if (!(tgfx = kmalloc(sizeof(struct tgfx), GFP_KERNEL))) {
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parport_put_port(pp);
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return NULL;
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}
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memset(tgfx, 0, sizeof(struct tgfx));
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tgfx->pd = parport_register_device(pp, "turbografx", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
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parport_put_port(pp);
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if (!tgfx->pd) {
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printk(KERN_ERR "turbografx.c: parport busy already - lp.o loaded?\n");
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kfree(tgfx);
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return NULL;
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}
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init_timer(&tgfx->timer);
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tgfx->timer.data = (long) tgfx;
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tgfx->timer.function = tgfx_timer;
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tgfx->sticks = 0;
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for (i = 0; i < nargs - 1; i++)
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if (config[i+1] > 0 && config[i+1] < 6) {
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tgfx->sticks |= (1 << i);
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tgfx->dev[i].private = tgfx;
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tgfx->dev[i].open = tgfx_open;
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tgfx->dev[i].close = tgfx_close;
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sprintf(tgfx->phys[i], "%s/input0", tgfx->pd->port->name);
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tgfx->dev[i].name = tgfx_name;
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tgfx->dev[i].phys = tgfx->phys[i];
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tgfx->dev[i].id.bustype = BUS_PARPORT;
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tgfx->dev[i].id.vendor = 0x0003;
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tgfx->dev[i].id.product = config[i+1];
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tgfx->dev[i].id.version = 0x0100;
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tgfx->dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
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tgfx->dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
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for (j = 0; j < config[i+1]; j++)
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set_bit(tgfx_buttons[j], tgfx->dev[i].keybit);
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tgfx->dev[i].absmin[ABS_X] = -1; tgfx->dev[i].absmax[ABS_X] = 1;
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tgfx->dev[i].absmin[ABS_Y] = -1; tgfx->dev[i].absmax[ABS_Y] = 1;
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input_register_device(tgfx->dev + i);
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printk(KERN_INFO "input: %d-button Multisystem joystick on %s\n",
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config[i+1], tgfx->pd->port->name);
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}
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if (!tgfx->sticks) {
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parport_unregister_device(tgfx->pd);
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kfree(tgfx);
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return NULL;
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}
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return tgfx;
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}
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static int __init tgfx_init(void)
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{
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tgfx_base[0] = tgfx_probe(tgfx, tgfx_nargs);
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tgfx_base[1] = tgfx_probe(tgfx_2, tgfx_nargs_2);
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tgfx_base[2] = tgfx_probe(tgfx_3, tgfx_nargs_3);
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if (tgfx_base[0] || tgfx_base[1] || tgfx_base[2])
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return 0;
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return -ENODEV;
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}
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static void __exit tgfx_exit(void)
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{
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int i, j;
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for (i = 0; i < 3; i++)
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if (tgfx_base[i]) {
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for (j = 0; j < 7; j++)
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if (tgfx_base[i]->sticks & (1 << j))
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input_unregister_device(tgfx_base[i]->dev + j);
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parport_unregister_device(tgfx_base[i]->pd);
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}
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}
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module_init(tgfx_init);
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module_exit(tgfx_exit);
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