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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Amiga mouse driver for Linux/m68k
3 *
4 * Copyright (c) 2000-2002 Vojtech Pavlik
5 *
6 * Based on the work of:
7 * Michael Rausch James Banks
8 * Matther Dillon David Giller
9 * Nathan Laredo Linus Torvalds
10 * Johan Myreen Jes Sorensen
11 * Russell King
12 */
13
14/*
15 * This program is free software; you can redistribute it and/or modify it
16 * under the terms of the GNU General Public License version 2 as published by
17 * the Free Software Foundation
18 */
19
20#include <linux/module.h>
21#include <linux/init.h>
22#include <linux/input.h>
23#include <linux/interrupt.h>
Geert Uytterhoeven314c9262009-04-05 13:11:28 +020024#include <linux/platform_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
26#include <asm/irq.h>
27#include <asm/setup.h>
28#include <asm/system.h>
29#include <asm/uaccess.h>
30#include <asm/amigahw.h>
31#include <asm/amigaints.h>
32
33MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
34MODULE_DESCRIPTION("Amiga mouse driver");
35MODULE_LICENSE("GPL");
36
Linus Torvalds1da177e2005-04-16 15:20:36 -070037static int amimouse_lastx, amimouse_lasty;
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
Geert Uytterhoeven314c9262009-04-05 13:11:28 +020039static irqreturn_t amimouse_interrupt(int irq, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -070040{
Geert Uytterhoeven314c9262009-04-05 13:11:28 +020041 struct input_dev *dev = data;
Linus Torvalds1da177e2005-04-16 15:20:36 -070042 unsigned short joy0dat, potgor;
43 int nx, ny, dx, dy;
44
Al Virob4290a22006-01-12 01:06:12 -080045 joy0dat = amiga_custom.joy0dat;
Linus Torvalds1da177e2005-04-16 15:20:36 -070046
47 nx = joy0dat & 0xff;
48 ny = joy0dat >> 8;
49
50 dx = nx - amimouse_lastx;
51 dy = ny - amimouse_lasty;
52
53 if (dx < -127) dx = (256 + nx) - amimouse_lastx;
54 if (dx > 127) dx = (nx - 256) - amimouse_lastx;
55 if (dy < -127) dy = (256 + ny) - amimouse_lasty;
56 if (dy > 127) dy = (ny - 256) - amimouse_lasty;
57
58 amimouse_lastx = nx;
59 amimouse_lasty = ny;
60
Al Virob4290a22006-01-12 01:06:12 -080061 potgor = amiga_custom.potgor;
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
Geert Uytterhoeven314c9262009-04-05 13:11:28 +020063 input_report_rel(dev, REL_X, dx);
64 input_report_rel(dev, REL_Y, dy);
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
Geert Uytterhoeven314c9262009-04-05 13:11:28 +020066 input_report_key(dev, BTN_LEFT, ciaa.pra & 0x40);
67 input_report_key(dev, BTN_MIDDLE, potgor & 0x0100);
68 input_report_key(dev, BTN_RIGHT, potgor & 0x0400);
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
Geert Uytterhoeven314c9262009-04-05 13:11:28 +020070 input_sync(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070071
72 return IRQ_HANDLED;
73}
74
75static int amimouse_open(struct input_dev *dev)
76{
77 unsigned short joy0dat;
Geert Uytterhoeven314c9262009-04-05 13:11:28 +020078 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -070079
Al Virob4290a22006-01-12 01:06:12 -080080 joy0dat = amiga_custom.joy0dat;
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
82 amimouse_lastx = joy0dat & 0xff;
83 amimouse_lasty = joy0dat >> 8;
84
Geert Uytterhoeven314c9262009-04-05 13:11:28 +020085 error = request_irq(IRQ_AMIGA_VERTB, amimouse_interrupt, 0, "amimouse",
86 dev);
87 if (error)
88 dev_err(&dev->dev, "Can't allocate irq %d\n", IRQ_AMIGA_VERTB);
Linus Torvalds1da177e2005-04-16 15:20:36 -070089
Geert Uytterhoeven314c9262009-04-05 13:11:28 +020090 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -070091}
92
93static void amimouse_close(struct input_dev *dev)
94{
Geert Uytterhoeven314c9262009-04-05 13:11:28 +020095 free_irq(IRQ_AMIGA_VERTB, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070096}
97
Geert Uytterhoeven314c9262009-04-05 13:11:28 +020098static int __init amimouse_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -070099{
Dmitry Torokhov72155612006-11-05 22:40:19 -0500100 int err;
Geert Uytterhoeven314c9262009-04-05 13:11:28 +0200101 struct input_dev *dev;
Dmitry Torokhov72155612006-11-05 22:40:19 -0500102
Geert Uytterhoeven314c9262009-04-05 13:11:28 +0200103 dev = input_allocate_device();
104 if (!dev)
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -0500105 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106
Geert Uytterhoeven314c9262009-04-05 13:11:28 +0200107 dev->name = pdev->name;
108 dev->phys = "amimouse/input0";
109 dev->id.bustype = BUS_AMIGA;
110 dev->id.vendor = 0x0001;
111 dev->id.product = 0x0002;
112 dev->id.version = 0x0100;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113
Geert Uytterhoeven314c9262009-04-05 13:11:28 +0200114 dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
115 dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
116 dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
Jiri Slaby7b19ada2007-10-18 23:40:32 -0700117 BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
Geert Uytterhoeven314c9262009-04-05 13:11:28 +0200118 dev->open = amimouse_open;
119 dev->close = amimouse_close;
120 dev->dev.parent = &pdev->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121
Geert Uytterhoeven314c9262009-04-05 13:11:28 +0200122 err = input_register_device(dev);
Dmitry Torokhov72155612006-11-05 22:40:19 -0500123 if (err) {
Geert Uytterhoeven314c9262009-04-05 13:11:28 +0200124 input_free_device(dev);
Dmitry Torokhov72155612006-11-05 22:40:19 -0500125 return err;
126 }
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -0500127
Geert Uytterhoeven314c9262009-04-05 13:11:28 +0200128 platform_set_drvdata(pdev, dev);
129
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 return 0;
131}
132
Geert Uytterhoeven314c9262009-04-05 13:11:28 +0200133static int __exit amimouse_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134{
Geert Uytterhoeven314c9262009-04-05 13:11:28 +0200135 struct input_dev *dev = platform_get_drvdata(pdev);
136
137 platform_set_drvdata(pdev, NULL);
138 input_unregister_device(dev);
139 return 0;
140}
141
142static struct platform_driver amimouse_driver = {
143 .remove = __exit_p(amimouse_remove),
144 .driver = {
145 .name = "amiga-mouse",
146 .owner = THIS_MODULE,
147 },
148};
149
150static int __init amimouse_init(void)
151{
152 return platform_driver_probe(&amimouse_driver, amimouse_probe);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153}
154
155module_init(amimouse_init);
Geert Uytterhoeven314c9262009-04-05 13:11:28 +0200156
157static void __exit amimouse_exit(void)
158{
159 platform_driver_unregister(&amimouse_driver);
160}
161
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162module_exit(amimouse_exit);
Geert Uytterhoeven314c9262009-04-05 13:11:28 +0200163
164MODULE_ALIAS("platform:amiga-mouse");