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1 | /* |
2 | * Atari mouse driver for Linux/m68k |
3 | * |
4 | * Copyright (c) 2005 Michael Schmitz |
5 | * |
6 | * Based on: |
7 | * Amiga mouse driver for Linux/m68k |
8 | * |
9 | * Copyright (c) 2000-2002 Vojtech Pavlik |
10 | * |
11 | */ |
12 | /* |
13 | * The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c |
14 | * (the keyboard ACIA also handles the mouse and joystick data, and the keyboard |
15 | * interrupt is shared with the MIDI ACIA so MIDI data also get handled there). |
16 | * This driver only deals with handing key events off to the input layer. |
17 | * |
18 | * Largely based on the old: |
19 | * |
20 | * Atari Mouse Driver for Linux |
21 | * by Robert de Vries (robert@and.nl) 19Jul93 |
22 | * |
23 | * 16 Nov 1994 Andreas Schwab |
24 | * Compatibility with busmouse |
25 | * Support for three button mouse (shamelessly stolen from MiNT) |
26 | * third button wired to one of the joystick directions on joystick 1 |
27 | * |
28 | * 1996/02/11 Andreas Schwab |
29 | * Module support |
30 | * Allow multiple open's |
31 | * |
32 | * Converted to use new generic busmouse code. 5 Apr 1998 |
33 | * Russell King <rmk@arm.uk.linux.org> |
34 | */ |
35 | |
36 | |
37 | /* |
38 | * This program is free software; you can redistribute it and/or modify it |
39 | * under the terms of the GNU General Public License version 2 as published by |
40 | * the Free Software Foundation |
41 | */ |
42 | |
43 | #include <linux/module.h> |
44 | #include <linux/init.h> |
45 | #include <linux/input.h> |
46 | #include <linux/interrupt.h> |
47 | |
48 | #include <asm/irq.h> |
49 | #include <asm/setup.h> |
50 | #include <asm/uaccess.h> |
51 | #include <asm/atarihw.h> |
52 | #include <asm/atarikb.h> |
53 | #include <asm/atariints.h> |
54 | |
55 | MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>"); |
56 | MODULE_DESCRIPTION("Atari mouse driver"); |
57 | MODULE_LICENSE("GPL"); |
58 | |
59 | static int mouse_threshold[2] = {2, 2}; |
60 | module_param_array(mouse_threshold, int, NULL, 0); |
61 | |
62 | #ifdef FIXED_ATARI_JOYSTICK |
63 | extern int atari_mouse_buttons; |
64 | #endif |
65 | |
66 | static struct input_dev *atamouse_dev; |
67 | |
68 | static void atamouse_interrupt(char *buf) |
69 | { |
70 | int buttons, dx, dy; |
71 | |
72 | buttons = (buf[0] & 1) | ((buf[0] & 2) << 1); |
73 | #ifdef FIXED_ATARI_JOYSTICK |
74 | buttons |= atari_mouse_buttons & 2; |
75 | atari_mouse_buttons = buttons; |
76 | #endif |
77 | |
78 | /* only relative events get here */ |
79 | dx = buf[1]; |
80 | dy = buf[2]; |
81 | |
82 | input_report_rel(atamouse_dev, REL_X, dx); |
83 | input_report_rel(atamouse_dev, REL_Y, dy); |
84 | |
85 | input_report_key(atamouse_dev, BTN_LEFT, buttons & 0x4); |
86 | input_report_key(atamouse_dev, BTN_MIDDLE, buttons & 0x2); |
87 | input_report_key(atamouse_dev, BTN_RIGHT, buttons & 0x1); |
88 | |
89 | input_sync(atamouse_dev); |
90 | |
91 | return; |
92 | } |
93 | |
94 | static int atamouse_open(struct input_dev *dev) |
95 | { |
96 | #ifdef FIXED_ATARI_JOYSTICK |
97 | atari_mouse_buttons = 0; |
98 | #endif |
99 | ikbd_mouse_y0_top(); |
100 | ikbd_mouse_thresh(mouse_threshold[0], mouse_threshold[1]); |
101 | ikbd_mouse_rel_pos(); |
102 | atari_input_mouse_interrupt_hook = atamouse_interrupt; |
103 | |
104 | return 0; |
105 | } |
106 | |
107 | static void atamouse_close(struct input_dev *dev) |
108 | { |
109 | ikbd_mouse_disable(); |
110 | atari_input_mouse_interrupt_hook = NULL; |
111 | } |
112 | |
113 | static int __init atamouse_init(void) |
114 | { |
115 | int error; |
116 | |
117 | if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP)) |
118 | return -ENODEV; |
119 | |
120 | error = atari_keyb_init(); |
121 | if (error) |
122 | return error; |
123 | |
124 | atamouse_dev = input_allocate_device(); |
125 | if (!atamouse_dev) |
126 | return -ENOMEM; |
127 | |
128 | atamouse_dev->name = "Atari mouse"; |
129 | atamouse_dev->phys = "atamouse/input0"; |
130 | atamouse_dev->id.bustype = BUS_HOST; |
131 | atamouse_dev->id.vendor = 0x0001; |
132 | atamouse_dev->id.product = 0x0002; |
133 | atamouse_dev->id.version = 0x0100; |
134 | |
135 | atamouse_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
136 | atamouse_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); |
137 | atamouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | |
138 | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); |
139 | |
140 | atamouse_dev->open = atamouse_open; |
141 | atamouse_dev->close = atamouse_close; |
142 | |
143 | error = input_register_device(atamouse_dev); |
144 | if (error) { |
145 | input_free_device(atamouse_dev); |
146 | return error; |
147 | } |
148 | |
149 | return 0; |
150 | } |
151 | |
152 | static void __exit atamouse_exit(void) |
153 | { |
154 | input_unregister_device(atamouse_dev); |
155 | } |
156 | |
157 | module_init(atamouse_init); |
158 | module_exit(atamouse_exit); |
159 |
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