// SPDX-License-Identifier: GPL-2.0-only
/*
* Atari mouse driver for Linux / m68k
*
* Copyright ( c ) 2005 Michael Schmitz
*
* Based on :
* Amiga mouse driver for Linux / m68k
*
* Copyright ( c ) 2000 - 2002 Vojtech Pavlik
*/
/*
* The low level init and interrupt stuff is handled in arch / mm68k / atari / atakeyb . c
* ( the keyboard ACIA also handles the mouse and joystick data , and the keyboard
* interrupt is shared with the MIDI ACIA so MIDI data also get handled there ) .
* This driver only deals with handing key events off to the input layer .
*
* Largely based on the old :
*
* Atari Mouse Driver for Linux
* by Robert de Vries ( robert @ and . nl ) 19 Jul93
*
* 16 Nov 1994 Andreas Schwab
* Compatibility with busmouse
* Support for three button mouse ( shamelessly stolen from MiNT )
* third button wired to one of the joystick directions on joystick 1
*
* 1996 / 02 / 11 Andreas Schwab
* Module support
* Allow multiple open ' s
*
* Converted to use new generic busmouse code . 5 Apr 1998
* Russell King < rmk @ arm . uk . linux . org >
*/
#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 <linux/uaccess.h>
#include <asm /atarihw.h>
#include <asm /atarikb.h>
#include <asm /atariints.h>
MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>" );
MODULE_DESCRIPTION("Atari mouse driver" );
MODULE_LICENSE("GPL" );
static int mouse_threshold[2 ] = {2 , 2 };
module_param_array(mouse_threshold, int , NULL, 0 );
#ifdef FIXED_ATARI_JOYSTICK
extern int atari_mouse_buttons;
#endif
static struct input_dev *atamouse_dev;
static void atamouse_interrupt(char *buf)
{
int buttons, dx, dy;
buttons = (buf[0 ] & 1 ) | ((buf[0 ] & 2 ) << 1 );
#ifdef FIXED_ATARI_JOYSTICK
buttons |= atari_mouse_buttons & 2 ;
atari_mouse_buttons = buttons;
#endif
/* only relative events get here */
dx = buf[1 ];
dy = buf[2 ];
input_report_rel(atamouse_dev, REL_X, dx);
input_report_rel(atamouse_dev, REL_Y, dy);
input_report_key(atamouse_dev, BTN_LEFT, buttons & 0 x4);
input_report_key(atamouse_dev, BTN_MIDDLE, buttons & 0 x2);
input_report_key(atamouse_dev, BTN_RIGHT, buttons & 0 x1);
input_sync(atamouse_dev);
return ;
}
static int atamouse_open(struct input_dev *dev)
{
#ifdef FIXED_ATARI_JOYSTICK
atari_mouse_buttons = 0 ;
#endif
ikbd_mouse_y0_top();
ikbd_mouse_thresh(mouse_threshold[0 ], mouse_threshold[1 ]);
ikbd_mouse_rel_pos();
atari_input_mouse_interrupt_hook = atamouse_interrupt;
return 0 ;
}
static void atamouse_close(struct input_dev *dev)
{
ikbd_mouse_disable();
atari_input_mouse_interrupt_hook = NULL;
}
static int __init atamouse_init(void )
{
int error;
if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP))
return -ENODEV;
error = atari_keyb_init();
if (error)
return error;
atamouse_dev = input_allocate_device();
if (!atamouse_dev)
return -ENOMEM;
atamouse_dev->name = "Atari mouse" ;
atamouse_dev->phys = "atamouse/input0" ;
atamouse_dev->id.bustype = BUS_HOST;
atamouse_dev->id.vendor = 0 x0001;
atamouse_dev->id.product = 0 x0002;
atamouse_dev->id.version = 0 x0100;
atamouse_dev->evbit[0 ] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
atamouse_dev->relbit[0 ] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
atamouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
atamouse_dev->open = atamouse_open;
atamouse_dev->close = atamouse_close;
error = input_register_device(atamouse_dev);
if (error) {
input_free_device(atamouse_dev);
return error;
}
return 0 ;
}
static void __exit atamouse_exit(void )
{
input_unregister_device(atamouse_dev);
}
module_init(atamouse_init);
module_exit(atamouse_exit);
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