1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Atari mouse driver for Linux/m68k |
4 | * |
5 | * Copyright (c) 2005 Michael Schmitz |
6 | * |
7 | * Based on: |
8 | * Amiga mouse driver for Linux/m68k |
9 | * |
10 | * Copyright (c) 2000-2002 Vojtech Pavlik |
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 | #include <linux/module.h> |
39 | #include <linux/init.h> |
40 | #include <linux/input.h> |
41 | #include <linux/interrupt.h> |
42 | |
43 | #include <asm/irq.h> |
44 | #include <asm/setup.h> |
45 | #include <linux/uaccess.h> |
46 | #include <asm/atarihw.h> |
47 | #include <asm/atarikb.h> |
48 | #include <asm/atariints.h> |
49 | |
50 | MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>" ); |
51 | MODULE_DESCRIPTION("Atari mouse driver" ); |
52 | MODULE_LICENSE("GPL" ); |
53 | |
54 | static int mouse_threshold[2] = {2, 2}; |
55 | module_param_array(mouse_threshold, int, NULL, 0); |
56 | |
57 | #ifdef FIXED_ATARI_JOYSTICK |
58 | extern int atari_mouse_buttons; |
59 | #endif |
60 | |
61 | static struct input_dev *atamouse_dev; |
62 | |
63 | static void atamouse_interrupt(char *buf) |
64 | { |
65 | int buttons, dx, dy; |
66 | |
67 | buttons = (buf[0] & 1) | ((buf[0] & 2) << 1); |
68 | #ifdef FIXED_ATARI_JOYSTICK |
69 | buttons |= atari_mouse_buttons & 2; |
70 | atari_mouse_buttons = buttons; |
71 | #endif |
72 | |
73 | /* only relative events get here */ |
74 | dx = buf[1]; |
75 | dy = buf[2]; |
76 | |
77 | input_report_rel(dev: atamouse_dev, REL_X, value: dx); |
78 | input_report_rel(dev: atamouse_dev, REL_Y, value: dy); |
79 | |
80 | input_report_key(dev: atamouse_dev, BTN_LEFT, value: buttons & 0x4); |
81 | input_report_key(dev: atamouse_dev, BTN_MIDDLE, value: buttons & 0x2); |
82 | input_report_key(dev: atamouse_dev, BTN_RIGHT, value: buttons & 0x1); |
83 | |
84 | input_sync(dev: atamouse_dev); |
85 | |
86 | return; |
87 | } |
88 | |
89 | static int atamouse_open(struct input_dev *dev) |
90 | { |
91 | #ifdef FIXED_ATARI_JOYSTICK |
92 | atari_mouse_buttons = 0; |
93 | #endif |
94 | ikbd_mouse_y0_top(); |
95 | ikbd_mouse_thresh(mouse_threshold[0], mouse_threshold[1]); |
96 | ikbd_mouse_rel_pos(); |
97 | atari_input_mouse_interrupt_hook = atamouse_interrupt; |
98 | |
99 | return 0; |
100 | } |
101 | |
102 | static void atamouse_close(struct input_dev *dev) |
103 | { |
104 | ikbd_mouse_disable(); |
105 | atari_input_mouse_interrupt_hook = NULL; |
106 | } |
107 | |
108 | static int __init atamouse_init(void) |
109 | { |
110 | int error; |
111 | |
112 | if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP)) |
113 | return -ENODEV; |
114 | |
115 | error = atari_keyb_init(); |
116 | if (error) |
117 | return error; |
118 | |
119 | atamouse_dev = input_allocate_device(); |
120 | if (!atamouse_dev) |
121 | return -ENOMEM; |
122 | |
123 | atamouse_dev->name = "Atari mouse" ; |
124 | atamouse_dev->phys = "atamouse/input0" ; |
125 | atamouse_dev->id.bustype = BUS_HOST; |
126 | atamouse_dev->id.vendor = 0x0001; |
127 | atamouse_dev->id.product = 0x0002; |
128 | atamouse_dev->id.version = 0x0100; |
129 | |
130 | atamouse_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
131 | atamouse_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); |
132 | atamouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | |
133 | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); |
134 | |
135 | atamouse_dev->open = atamouse_open; |
136 | atamouse_dev->close = atamouse_close; |
137 | |
138 | error = input_register_device(atamouse_dev); |
139 | if (error) { |
140 | input_free_device(dev: atamouse_dev); |
141 | return error; |
142 | } |
143 | |
144 | return 0; |
145 | } |
146 | |
147 | static void __exit atamouse_exit(void) |
148 | { |
149 | input_unregister_device(atamouse_dev); |
150 | } |
151 | |
152 | module_init(atamouse_init); |
153 | module_exit(atamouse_exit); |
154 | |