1 files changed, 137 insertions, 0 deletions
diff --git a/drivers/input/mouse/amimouse.c b/drivers/input/mouse/amimouse.c
new file mode 100644
index 000000000000..7baa09cca7c5
--- /dev/null
+++ b/drivers/input/mouse/amimouse.c
@@ -0,0 +1,137 @@
+/*
+ *  Amiga mouse driver for Linux/m68k
+ *
+ *  Copyright (c) 2000-2002 Vojtech Pavlik
+ *
+ *  Based on the work of:
+ *	Michael Rausch		James Banks
+ *	Matther Dillon		David Giller
+ *	Nathan Laredo		Linus Torvalds
+ *	Johan Myreen		Jes Sorensen
+ *	Russell King
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+
+#include <asm/irq.h>
+#include <asm/setup.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <asm/amigahw.h>
+#include <asm/amigaints.h>
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION("Amiga mouse driver");
+MODULE_LICENSE("GPL");
+
+static int amimouse_used = 0;
+static int amimouse_lastx, amimouse_lasty;
+static struct input_dev amimouse_dev;
+
+static char *amimouse_name = "Amiga mouse";
+static char *amimouse_phys = "amimouse/input0";
+
+static irqreturn_t amimouse_interrupt(int irq, void *dummy, struct pt_regs *fp)
+{
+	unsigned short joy0dat, potgor;
+	int nx, ny, dx, dy;
+
+	joy0dat = custom.joy0dat;
+
+	nx = joy0dat & 0xff;
+	ny = joy0dat >> 8;
+
+	dx = nx - amimouse_lastx;
+	dy = ny - amimouse_lasty;
+
+	if (dx < -127) dx = (256 + nx) - amimouse_lastx;
+	if (dx >  127) dx = (nx - 256) - amimouse_lastx;
+	if (dy < -127) dy = (256 + ny) - amimouse_lasty;
+	if (dy >  127) dy = (ny - 256) - amimouse_lasty;
+
+	amimouse_lastx = nx;
+	amimouse_lasty = ny;
+
+	potgor = custom.potgor;
+
+	input_regs(&amimouse_dev, fp);
+
+	input_report_rel(&amimouse_dev, REL_X, dx);
+	input_report_rel(&amimouse_dev, REL_Y, dy);
+
+	input_report_key(&amimouse_dev, BTN_LEFT,   ciaa.pra & 0x40);
+	input_report_key(&amimouse_dev, BTN_MIDDLE, potgor & 0x0100);
+	input_report_key(&amimouse_dev, BTN_RIGHT,  potgor & 0x0400);
+
+	input_sync(&amimouse_dev);
+
+	return IRQ_HANDLED;
+}
+
+static int amimouse_open(struct input_dev *dev)
+{
+	unsigned short joy0dat;
+
+        if (amimouse_used++)
+                return 0;
+
+	joy0dat = custom.joy0dat;
+
+	amimouse_lastx = joy0dat & 0xff;
+	amimouse_lasty = joy0dat >> 8;
+
+	if (request_irq(IRQ_AMIGA_VERTB, amimouse_interrupt, 0, "amimouse", amimouse_interrupt)) {
+                amimouse_used--;
+                printk(KERN_ERR "amimouse.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB);
+                return -EBUSY;
+        }
+
+        return 0;
+}
+
+static void amimouse_close(struct input_dev *dev)
+{
+        if (!--amimouse_used)
+		free_irq(IRQ_AMIGA_VERTB, amimouse_interrupt);
+}
+
+static int __init amimouse_init(void)
+{
+	if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_MOUSE))
+		return -ENODEV;
+
+	amimouse_dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
+	amimouse_dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
+	amimouse_dev.keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
+	amimouse_dev.open = amimouse_open;
+	amimouse_dev.close = amimouse_close;
+
+	amimouse_dev.name = amimouse_name;
+	amimouse_dev.phys = amimouse_phys;
+	amimouse_dev.id.bustype = BUS_AMIGA;
+	amimouse_dev.id.vendor = 0x0001;
+	amimouse_dev.id.product = 0x0002;
+	amimouse_dev.id.version = 0x0100;
+
+	input_register_device(&amimouse_dev);
+
+        printk(KERN_INFO "input: %s at joy0dat\n", amimouse_name);
+	return 0;
+}
+
+static void __exit amimouse_exit(void)
+{
+        input_unregister_device(&amimouse_dev);
+}
+
+module_init(amimouse_init);
+module_exit(amimouse_exit);