amijoy.c
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上传日期:2013-04-10
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- /*
- * $Id: amijoy.c,v 1.5 2000/07/21 22:52:24 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");
- MODULE_LICENSE("GPL");
- 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)) {
- (*used)--;
- printk(KERN_ERR "amijoy.c: Can't allocate irq %dn", amijoy_irq);
- return -EBUSY;
- }
-
- return 0;
- }
- static void amijoy_close(struct input_dev *dev)
- {
- int *used = dev->private;
- if (!--(*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]) {
- if (!request_mem_region(CUSTOM_PHYSADDR+10+i*2, 2,
- "amijoy [Denise]")) {
- if (i == 1 && amijoy[0]) {
- input_unregister_device(amijoy_dev);
- release_mem_region(CUSTOM_PHYSADDR+10, 2);
- }
- return -EBUSY;
- }
- 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%ddatn", amijoy_dev[i].number, amijoy_name, i);
- }
- return 0;
- }
- static void _exit amijoy_exit(void)
- {
- int i;
- for (i = 0; i < 2; i++)
- if (amijoy[i]) {
- input_unregister_device(amijoy_dev + i);
- release_mem_region(CUSTOM_PHYSADDR+10+i*2, 2);
- }
- }
- module_init(amijoy_init);
- module_exit(amijoy_exit);