patch-2.4.0-test2 linux/drivers/char/joystick/amijoy.c

• Lines: 150
• Date: Wed Jun 21 08:22:21 2000
• Orig file: v2.4.0-test1/linux/drivers/char/joystick/amijoy.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test1/linux/drivers/char/joystick/amijoy.c linux/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);