diff options
Diffstat (limited to 'drivers/char/joystick/amijoy.c')
| -rw-r--r-- | drivers/char/joystick/amijoy.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/drivers/char/joystick/amijoy.c b/drivers/char/joystick/amijoy.c new file mode 100644 index 000000000..f17aeda24 --- /dev/null +++ b/drivers/char/joystick/amijoy.c @@ -0,0 +1,149 @@ +/* + * $Id: amijoy.c,v 1.4 2000/05/29 10:39:54 vojtech Exp $ + * + * Copyright (c) 1998-2000 Vojtech Pavlik + * + * Sponsored by SuSE + */ + +/* + * Driver for Amiga joysticks for Linux/m68k + */ + +/* + * 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/types.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/input.h> + +#include <asm/system.h> +#include <asm/amigahw.h> + +MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); +MODULE_PARM(amijoy, "1-2i"); + +static int amijoy[2] = { 0, 1 }; +static int amijoy_used[2] = { 0, 0 }; +static struct input_dev amijoy_dev[2]; + +static char *amijoy_name = "Amiga joystick"; + +static void amijoy_interrupt(int irq, void *dummy, struct pt_regs *fp) +{ + int i, data = 0, button = 0; + + for (i = 0; i < 2; i++) + if (amijoy[i]) { + + switch (i) { + case 0: data = ~custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break; + case 1: data = ~custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break; + } + + input_report_key(amijoy_dev + i, BTN_TRIGGER, button); + + input_report_abs(amijoy_dev + i, ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1); + data = ~(data ^ (data << 1)); + input_report_abs(amijoy_dev + i, ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1); + } +} + +static int amijoy_open(struct input_dev *dev) +{ + int *used = dev->private; + + if ((*used)++) + return 0; + + if (request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", NULL)) { + amijoy_used--; + printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", amijoy_irq); + return -EBUSY; + } + + return 0; +} + +static void amijoy_close(struct input_dev *dev) +{ + int *used = dev->private; + + if (!--(*port->used)) + free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt); +} + +static int __init amijoy_setup(char *str) +{ + int i; + int ints[4] + str = get_options(str, ARRAY_SIZE(ints), ints); + for (i = 0; i <= ints[0] && i < 2; i++) amijoy[i] = ints[i+1]; + return 1; +} +__setup("amijoy=", amijoy_setup); + +static int __init amijoy_init(void) +{ + int i, j; + + init_timer(amijoy_timer); + port->timer.function = amijoy_timer; + + for (i = 0; i < 2; i++) + if (amijoy[i]) { + + amijoy_dev[i].open = amijoy_open; + amijoy_dev[i].close = amijoy_close; + amijoy_dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); + amijoy_dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y); + amijoy_dev[i].keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); + for (j = 0; j < 2; j++) + amijoy_dev[i].absmin[ABS_X + j] = -1; + amijoy_dev[i].absmax[ABS_X + j] = 1; + } + + amijoy->dev[i].name = amijoy_name; + amijoy->dev[i].idbus = BUS_AMIGA; + amijoy->dev[i].idvendor = 0x0001; + amijoy->dev[i].idproduct = 0x0003; + amijoy->dev[i].version = 0x0100; + + amijoy_dev[i].private = amijoy_used + i; + + input_register_device(amijoy_dev + i); + printk(KERN_INFO "input%d: %s at joy%ddat\n", amijoy_dev[i].number, amijoy_name, i); + } +} + +static void _exit amijoy_exit(void) +{ + int i; + + for (i = 0; i < 2; i++) + if (amijoy[i]) + input_unregister_device(amijoy_dev + i); +} + +module_init(amijoy_init); +module_exit(amijoy_exit); |