1d2912cb1SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
2c04cb856SMichael Schmitz /*
3c04cb856SMichael Schmitz * Atari mouse driver for Linux/m68k
4c04cb856SMichael Schmitz *
5c04cb856SMichael Schmitz * Copyright (c) 2005 Michael Schmitz
6c04cb856SMichael Schmitz *
7c04cb856SMichael Schmitz * Based on:
8c04cb856SMichael Schmitz * Amiga mouse driver for Linux/m68k
9c04cb856SMichael Schmitz *
10c04cb856SMichael Schmitz * Copyright (c) 2000-2002 Vojtech Pavlik
11c04cb856SMichael Schmitz */
12c04cb856SMichael Schmitz /*
13c04cb856SMichael Schmitz * The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c
14c04cb856SMichael Schmitz * (the keyboard ACIA also handles the mouse and joystick data, and the keyboard
15c04cb856SMichael Schmitz * interrupt is shared with the MIDI ACIA so MIDI data also get handled there).
16c04cb856SMichael Schmitz * This driver only deals with handing key events off to the input layer.
17c04cb856SMichael Schmitz *
18c04cb856SMichael Schmitz * Largely based on the old:
19c04cb856SMichael Schmitz *
20c04cb856SMichael Schmitz * Atari Mouse Driver for Linux
21c04cb856SMichael Schmitz * by Robert de Vries (robert@and.nl) 19Jul93
22c04cb856SMichael Schmitz *
23c04cb856SMichael Schmitz * 16 Nov 1994 Andreas Schwab
24c04cb856SMichael Schmitz * Compatibility with busmouse
25c04cb856SMichael Schmitz * Support for three button mouse (shamelessly stolen from MiNT)
26c04cb856SMichael Schmitz * third button wired to one of the joystick directions on joystick 1
27c04cb856SMichael Schmitz *
28c04cb856SMichael Schmitz * 1996/02/11 Andreas Schwab
29c04cb856SMichael Schmitz * Module support
30c04cb856SMichael Schmitz * Allow multiple open's
31c04cb856SMichael Schmitz *
32c04cb856SMichael Schmitz * Converted to use new generic busmouse code. 5 Apr 1998
33c04cb856SMichael Schmitz * Russell King <rmk@arm.uk.linux.org>
34c04cb856SMichael Schmitz */
35c04cb856SMichael Schmitz
36c04cb856SMichael Schmitz
37c04cb856SMichael Schmitz
38c04cb856SMichael Schmitz #include <linux/module.h>
39c04cb856SMichael Schmitz #include <linux/init.h>
40c04cb856SMichael Schmitz #include <linux/input.h>
41c04cb856SMichael Schmitz #include <linux/interrupt.h>
42c04cb856SMichael Schmitz
43c04cb856SMichael Schmitz #include <asm/irq.h>
44c04cb856SMichael Schmitz #include <asm/setup.h>
457c0f6ba6SLinus Torvalds #include <linux/uaccess.h>
46c04cb856SMichael Schmitz #include <asm/atarihw.h>
47c04cb856SMichael Schmitz #include <asm/atarikb.h>
48c04cb856SMichael Schmitz #include <asm/atariints.h>
49c04cb856SMichael Schmitz
50c04cb856SMichael Schmitz MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>");
51c04cb856SMichael Schmitz MODULE_DESCRIPTION("Atari mouse driver");
52c04cb856SMichael Schmitz MODULE_LICENSE("GPL");
53c04cb856SMichael Schmitz
54c04cb856SMichael Schmitz static int mouse_threshold[2] = {2, 2};
5582547e90SDmitry Torokhov module_param_array(mouse_threshold, int, NULL, 0);
56c04cb856SMichael Schmitz
57c04cb856SMichael Schmitz #ifdef FIXED_ATARI_JOYSTICK
58c04cb856SMichael Schmitz extern int atari_mouse_buttons;
59c04cb856SMichael Schmitz #endif
60c04cb856SMichael Schmitz
61c04cb856SMichael Schmitz static struct input_dev *atamouse_dev;
62c04cb856SMichael Schmitz
atamouse_interrupt(char * buf)63c04cb856SMichael Schmitz static void atamouse_interrupt(char *buf)
64c04cb856SMichael Schmitz {
65c04cb856SMichael Schmitz int buttons, dx, dy;
66c04cb856SMichael Schmitz
67c04cb856SMichael Schmitz buttons = (buf[0] & 1) | ((buf[0] & 2) << 1);
68c04cb856SMichael Schmitz #ifdef FIXED_ATARI_JOYSTICK
69c04cb856SMichael Schmitz buttons |= atari_mouse_buttons & 2;
70c04cb856SMichael Schmitz atari_mouse_buttons = buttons;
71c04cb856SMichael Schmitz #endif
72c04cb856SMichael Schmitz
73c04cb856SMichael Schmitz /* only relative events get here */
74c04cb856SMichael Schmitz dx = buf[1];
75659e6ed5SGeert Uytterhoeven dy = buf[2];
76c04cb856SMichael Schmitz
77c04cb856SMichael Schmitz input_report_rel(atamouse_dev, REL_X, dx);
78c04cb856SMichael Schmitz input_report_rel(atamouse_dev, REL_Y, dy);
79c04cb856SMichael Schmitz
80659e6ed5SGeert Uytterhoeven input_report_key(atamouse_dev, BTN_LEFT, buttons & 0x4);
81c04cb856SMichael Schmitz input_report_key(atamouse_dev, BTN_MIDDLE, buttons & 0x2);
82659e6ed5SGeert Uytterhoeven input_report_key(atamouse_dev, BTN_RIGHT, buttons & 0x1);
83c04cb856SMichael Schmitz
84c04cb856SMichael Schmitz input_sync(atamouse_dev);
85c04cb856SMichael Schmitz
86c04cb856SMichael Schmitz return;
87c04cb856SMichael Schmitz }
88c04cb856SMichael Schmitz
atamouse_open(struct input_dev * dev)89c04cb856SMichael Schmitz static int atamouse_open(struct input_dev *dev)
90c04cb856SMichael Schmitz {
91c04cb856SMichael Schmitz #ifdef FIXED_ATARI_JOYSTICK
92c04cb856SMichael Schmitz atari_mouse_buttons = 0;
93c04cb856SMichael Schmitz #endif
94c04cb856SMichael Schmitz ikbd_mouse_y0_top();
95c04cb856SMichael Schmitz ikbd_mouse_thresh(mouse_threshold[0], mouse_threshold[1]);
96c04cb856SMichael Schmitz ikbd_mouse_rel_pos();
97c04cb856SMichael Schmitz atari_input_mouse_interrupt_hook = atamouse_interrupt;
9882547e90SDmitry Torokhov
99c04cb856SMichael Schmitz return 0;
100c04cb856SMichael Schmitz }
101c04cb856SMichael Schmitz
atamouse_close(struct input_dev * dev)102c04cb856SMichael Schmitz static void atamouse_close(struct input_dev *dev)
103c04cb856SMichael Schmitz {
104c04cb856SMichael Schmitz ikbd_mouse_disable();
1057786908cSMichael Schmitz atari_input_mouse_interrupt_hook = NULL;
106c04cb856SMichael Schmitz }
107c04cb856SMichael Schmitz
atamouse_init(void)108c04cb856SMichael Schmitz static int __init atamouse_init(void)
109c04cb856SMichael Schmitz {
11082547e90SDmitry Torokhov int error;
11182547e90SDmitry Torokhov
112c04cb856SMichael Schmitz if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP))
113c04cb856SMichael Schmitz return -ENODEV;
114c04cb856SMichael Schmitz
115186f200aSMichael Schmitz error = atari_keyb_init();
116186f200aSMichael Schmitz if (error)
117186f200aSMichael Schmitz return error;
118c04cb856SMichael Schmitz
1196615c5b2SGeert Uytterhoeven atamouse_dev = input_allocate_device();
1206615c5b2SGeert Uytterhoeven if (!atamouse_dev)
1216615c5b2SGeert Uytterhoeven return -ENOMEM;
1226615c5b2SGeert Uytterhoeven
123c04cb856SMichael Schmitz atamouse_dev->name = "Atari mouse";
124c04cb856SMichael Schmitz atamouse_dev->phys = "atamouse/input0";
1256615c5b2SGeert Uytterhoeven atamouse_dev->id.bustype = BUS_HOST;
126c04cb856SMichael Schmitz atamouse_dev->id.vendor = 0x0001;
127c04cb856SMichael Schmitz atamouse_dev->id.product = 0x0002;
128c04cb856SMichael Schmitz atamouse_dev->id.version = 0x0100;
129c04cb856SMichael Schmitz
1307b19ada2SJiri Slaby atamouse_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
1317b19ada2SJiri Slaby atamouse_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
1327b19ada2SJiri Slaby atamouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
1337b19ada2SJiri Slaby BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
13482547e90SDmitry Torokhov
135c04cb856SMichael Schmitz atamouse_dev->open = atamouse_open;
136c04cb856SMichael Schmitz atamouse_dev->close = atamouse_close;
137c04cb856SMichael Schmitz
13882547e90SDmitry Torokhov error = input_register_device(atamouse_dev);
13982547e90SDmitry Torokhov if (error) {
1406615c5b2SGeert Uytterhoeven input_free_device(atamouse_dev);
14182547e90SDmitry Torokhov return error;
1426615c5b2SGeert Uytterhoeven }
143c04cb856SMichael Schmitz
144c04cb856SMichael Schmitz return 0;
145c04cb856SMichael Schmitz }
146c04cb856SMichael Schmitz
atamouse_exit(void)147c04cb856SMichael Schmitz static void __exit atamouse_exit(void)
148c04cb856SMichael Schmitz {
149c04cb856SMichael Schmitz input_unregister_device(atamouse_dev);
150c04cb856SMichael Schmitz }
151c04cb856SMichael Schmitz
152c04cb856SMichael Schmitz module_init(atamouse_init);
153c04cb856SMichael Schmitz module_exit(atamouse_exit);
154