6615c5b25e
m68k: Atari input drivers cleanup:
- memleak on failed init/register of input devices fixed
- correct keycodes table (Atari keycodes are almost, but not entirely, equal
to Linux keycodes).
Signed-off-by: Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
160 lines
3.8 KiB
C
160 lines
3.8 KiB
C
/*
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* Atari mouse driver for Linux/m68k
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*
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* Copyright (c) 2005 Michael Schmitz
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*
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* Based on:
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* Amiga mouse driver for Linux/m68k
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*
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* Copyright (c) 2000-2002 Vojtech Pavlik
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*
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*/
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/*
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* The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c
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* (the keyboard ACIA also handles the mouse and joystick data, and the keyboard
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* interrupt is shared with the MIDI ACIA so MIDI data also get handled there).
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* This driver only deals with handing key events off to the input layer.
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*
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* Largely based on the old:
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*
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* Atari Mouse Driver for Linux
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* by Robert de Vries (robert@and.nl) 19Jul93
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*
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* 16 Nov 1994 Andreas Schwab
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* Compatibility with busmouse
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* Support for three button mouse (shamelessly stolen from MiNT)
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* third button wired to one of the joystick directions on joystick 1
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*
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* 1996/02/11 Andreas Schwab
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* Module support
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* Allow multiple open's
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*
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* Converted to use new generic busmouse code. 5 Apr 1998
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* Russell King <rmk@arm.uk.linux.org>
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/input.h>
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#include <linux/interrupt.h>
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#include <asm/irq.h>
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#include <asm/setup.h>
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#include <asm/system.h>
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#include <asm/uaccess.h>
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#include <asm/atarihw.h>
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#include <asm/atarikb.h>
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#include <asm/atariints.h>
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MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>");
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MODULE_DESCRIPTION("Atari mouse driver");
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MODULE_LICENSE("GPL");
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static int mouse_threshold[2] = {2,2};
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#ifdef __MODULE__
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MODULE_PARM(mouse_threshold, "2i");
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#endif
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#ifdef FIXED_ATARI_JOYSTICK
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extern int atari_mouse_buttons;
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#endif
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static int atamouse_used = 0;
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static struct input_dev *atamouse_dev;
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static void atamouse_interrupt(char *buf)
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{
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int buttons, dx, dy;
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buttons = (buf[0] & 1) | ((buf[0] & 2) << 1);
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#ifdef FIXED_ATARI_JOYSTICK
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buttons |= atari_mouse_buttons & 2;
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atari_mouse_buttons = buttons;
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#endif
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/* only relative events get here */
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dx = buf[1];
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dy = -buf[2];
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input_report_rel(atamouse_dev, REL_X, dx);
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input_report_rel(atamouse_dev, REL_Y, dy);
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input_report_key(atamouse_dev, BTN_LEFT, buttons & 0x1);
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input_report_key(atamouse_dev, BTN_MIDDLE, buttons & 0x2);
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input_report_key(atamouse_dev, BTN_RIGHT, buttons & 0x4);
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input_sync(atamouse_dev);
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return;
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}
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static int atamouse_open(struct input_dev *dev)
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{
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if (atamouse_used++)
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return 0;
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#ifdef FIXED_ATARI_JOYSTICK
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atari_mouse_buttons = 0;
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#endif
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ikbd_mouse_y0_top();
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ikbd_mouse_thresh(mouse_threshold[0], mouse_threshold[1]);
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ikbd_mouse_rel_pos();
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atari_input_mouse_interrupt_hook = atamouse_interrupt;
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return 0;
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}
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static void atamouse_close(struct input_dev *dev)
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{
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if (!--atamouse_used) {
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ikbd_mouse_disable();
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atari_mouse_interrupt_hook = NULL;
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}
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}
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static int __init atamouse_init(void)
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{
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if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP))
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return -ENODEV;
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if (!(atari_keyb_init()))
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return -ENODEV;
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atamouse_dev = input_allocate_device();
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if (!atamouse_dev)
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return -ENOMEM;
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atamouse_dev->name = "Atari mouse";
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atamouse_dev->phys = "atamouse/input0";
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atamouse_dev->id.bustype = BUS_HOST;
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atamouse_dev->id.vendor = 0x0001;
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atamouse_dev->id.product = 0x0002;
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atamouse_dev->id.version = 0x0100;
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atamouse_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
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atamouse_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
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atamouse_dev->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
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atamouse_dev->open = atamouse_open;
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atamouse_dev->close = atamouse_close;
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if (input_register_device(atamouse_dev)) {
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input_free_device(atamouse_dev);
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return -ENOMEM;
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}
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return 0;
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}
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static void __exit atamouse_exit(void)
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{
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input_unregister_device(atamouse_dev);
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}
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module_init(atamouse_init);
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module_exit(atamouse_exit);
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