| /* |
| * $Id: turbografx.c,v 1.14 2002/01/22 20:30:39 vojtech Exp $ |
| * |
| * Copyright (c) 1998-2001 Vojtech Pavlik |
| * |
| * Based on the work of: |
| * Steffen Schwenke |
| */ |
| |
| /* |
| * TurboGraFX parallel port interface 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/parport.h> |
| #include <linux/input.h> |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/init.h> |
| |
| MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); |
| MODULE_DESCRIPTION("TurboGraFX parallel port interface driver"); |
| MODULE_LICENSE("GPL"); |
| |
| static int tgfx[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 }; |
| static int tgfx_nargs __initdata = 0; |
| module_param_array_named(map, tgfx, int, &tgfx_nargs, 0); |
| MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<js1>,<js2>,..<js7>"); |
| |
| static int tgfx_2[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 }; |
| static int tgfx_nargs_2 __initdata = 0; |
| module_param_array_named(map2, tgfx_2, int, &tgfx_nargs_2, 0); |
| MODULE_PARM_DESC(map2, "Describes second set of devices"); |
| |
| static int tgfx_3[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 }; |
| static int tgfx_nargs_3 __initdata = 0; |
| module_param_array_named(map3, tgfx_3, int, &tgfx_nargs_3, 0); |
| MODULE_PARM_DESC(map3, "Describes third set of devices"); |
| |
| __obsolete_setup("tgfx="); |
| __obsolete_setup("tgfx_2="); |
| __obsolete_setup("tgfx_3="); |
| |
| #define TGFX_REFRESH_TIME HZ/100 /* 10 ms */ |
| |
| #define TGFX_TRIGGER 0x08 |
| #define TGFX_UP 0x10 |
| #define TGFX_DOWN 0x20 |
| #define TGFX_LEFT 0x40 |
| #define TGFX_RIGHT 0x80 |
| |
| #define TGFX_THUMB 0x02 |
| #define TGFX_THUMB2 0x04 |
| #define TGFX_TOP 0x01 |
| #define TGFX_TOP2 0x08 |
| |
| static int tgfx_buttons[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2 }; |
| static char *tgfx_name = "TurboGraFX Multisystem joystick"; |
| |
| static struct tgfx { |
| struct pardevice *pd; |
| struct timer_list timer; |
| struct input_dev dev[7]; |
| char phys[7][32]; |
| int sticks; |
| int used; |
| struct semaphore sem; |
| } *tgfx_base[3]; |
| |
| /* |
| * tgfx_timer() reads and analyzes TurboGraFX joystick data. |
| */ |
| |
| static void tgfx_timer(unsigned long private) |
| { |
| struct tgfx *tgfx = (void *) private; |
| struct input_dev *dev; |
| int data1, data2, i; |
| |
| for (i = 0; i < 7; i++) |
| if (tgfx->sticks & (1 << i)) { |
| |
| dev = tgfx->dev + i; |
| |
| parport_write_data(tgfx->pd->port, ~(1 << i)); |
| data1 = parport_read_status(tgfx->pd->port) ^ 0x7f; |
| data2 = parport_read_control(tgfx->pd->port) ^ 0x04; /* CAVEAT parport */ |
| |
| input_report_abs(dev, ABS_X, !!(data1 & TGFX_RIGHT) - !!(data1 & TGFX_LEFT)); |
| input_report_abs(dev, ABS_Y, !!(data1 & TGFX_DOWN ) - !!(data1 & TGFX_UP )); |
| |
| input_report_key(dev, BTN_TRIGGER, (data1 & TGFX_TRIGGER)); |
| input_report_key(dev, BTN_THUMB, (data2 & TGFX_THUMB )); |
| input_report_key(dev, BTN_THUMB2, (data2 & TGFX_THUMB2 )); |
| input_report_key(dev, BTN_TOP, (data2 & TGFX_TOP )); |
| input_report_key(dev, BTN_TOP2, (data2 & TGFX_TOP2 )); |
| |
| input_sync(dev); |
| } |
| |
| mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME); |
| } |
| |
| static int tgfx_open(struct input_dev *dev) |
| { |
| struct tgfx *tgfx = dev->private; |
| int err; |
| |
| err = down_interruptible(&tgfx->sem); |
| if (err) |
| return err; |
| |
| if (!tgfx->used++) { |
| parport_claim(tgfx->pd); |
| parport_write_control(tgfx->pd->port, 0x04); |
| mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME); |
| } |
| |
| up(&tgfx->sem); |
| return 0; |
| } |
| |
| static void tgfx_close(struct input_dev *dev) |
| { |
| struct tgfx *tgfx = dev->private; |
| |
| down(&tgfx->sem); |
| if (!--tgfx->used) { |
| del_timer_sync(&tgfx->timer); |
| parport_write_control(tgfx->pd->port, 0x00); |
| parport_release(tgfx->pd); |
| } |
| up(&tgfx->sem); |
| } |
| |
| /* |
| * tgfx_probe() probes for tg gamepads. |
| */ |
| |
| static struct tgfx __init *tgfx_probe(int *config, int nargs) |
| { |
| struct tgfx *tgfx; |
| struct parport *pp; |
| int i, j; |
| |
| if (config[0] < 0) |
| return NULL; |
| |
| if (nargs < 2) { |
| printk(KERN_ERR "turbografx.c: at least one joystick must be specified\n"); |
| return NULL; |
| } |
| |
| pp = parport_find_number(config[0]); |
| |
| if (!pp) { |
| printk(KERN_ERR "turbografx.c: no such parport\n"); |
| return NULL; |
| } |
| |
| if (!(tgfx = kcalloc(1, sizeof(struct tgfx), GFP_KERNEL))) { |
| parport_put_port(pp); |
| return NULL; |
| } |
| |
| init_MUTEX(&tgfx->sem); |
| |
| tgfx->pd = parport_register_device(pp, "turbografx", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL); |
| |
| parport_put_port(pp); |
| |
| if (!tgfx->pd) { |
| printk(KERN_ERR "turbografx.c: parport busy already - lp.o loaded?\n"); |
| kfree(tgfx); |
| return NULL; |
| } |
| |
| init_timer(&tgfx->timer); |
| tgfx->timer.data = (long) tgfx; |
| tgfx->timer.function = tgfx_timer; |
| |
| tgfx->sticks = 0; |
| |
| for (i = 0; i < nargs - 1; i++) |
| if (config[i+1] > 0 && config[i+1] < 6) { |
| |
| tgfx->sticks |= (1 << i); |
| |
| tgfx->dev[i].private = tgfx; |
| tgfx->dev[i].open = tgfx_open; |
| tgfx->dev[i].close = tgfx_close; |
| |
| sprintf(tgfx->phys[i], "%s/input0", tgfx->pd->port->name); |
| |
| tgfx->dev[i].name = tgfx_name; |
| tgfx->dev[i].phys = tgfx->phys[i]; |
| tgfx->dev[i].id.bustype = BUS_PARPORT; |
| tgfx->dev[i].id.vendor = 0x0003; |
| tgfx->dev[i].id.product = config[i+1]; |
| tgfx->dev[i].id.version = 0x0100; |
| |
| tgfx->dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); |
| tgfx->dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y); |
| |
| for (j = 0; j < config[i+1]; j++) |
| set_bit(tgfx_buttons[j], tgfx->dev[i].keybit); |
| |
| tgfx->dev[i].absmin[ABS_X] = -1; tgfx->dev[i].absmax[ABS_X] = 1; |
| tgfx->dev[i].absmin[ABS_Y] = -1; tgfx->dev[i].absmax[ABS_Y] = 1; |
| |
| input_register_device(tgfx->dev + i); |
| printk(KERN_INFO "input: %d-button Multisystem joystick on %s\n", |
| config[i+1], tgfx->pd->port->name); |
| } |
| |
| if (!tgfx->sticks) { |
| parport_unregister_device(tgfx->pd); |
| kfree(tgfx); |
| return NULL; |
| } |
| |
| return tgfx; |
| } |
| |
| static int __init tgfx_init(void) |
| { |
| tgfx_base[0] = tgfx_probe(tgfx, tgfx_nargs); |
| tgfx_base[1] = tgfx_probe(tgfx_2, tgfx_nargs_2); |
| tgfx_base[2] = tgfx_probe(tgfx_3, tgfx_nargs_3); |
| |
| if (tgfx_base[0] || tgfx_base[1] || tgfx_base[2]) |
| return 0; |
| |
| return -ENODEV; |
| } |
| |
| static void __exit tgfx_exit(void) |
| { |
| int i, j; |
| |
| for (i = 0; i < 3; i++) |
| if (tgfx_base[i]) { |
| for (j = 0; j < 7; j++) |
| if (tgfx_base[i]->sticks & (1 << j)) |
| input_unregister_device(tgfx_base[i]->dev + j); |
| parport_unregister_device(tgfx_base[i]->pd); |
| } |
| } |
| |
| module_init(tgfx_init); |
| module_exit(tgfx_exit); |