cregit-Linux how code gets into the kernel

Release 4.11 drivers/input/mouse/atarimouse.c

/*
 *  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) 19Jul93
 *
 * 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>
 */


/*
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation
 */

#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 & 0x4); input_report_key(atamouse_dev, BTN_MIDDLE, buttons & 0x2); input_report_key(atamouse_dev, BTN_RIGHT, buttons & 0x1); input_sync(atamouse_dev); return; }

Contributors

PersonTokensPropCommitsCommitProp
Michael Schmitz12698.44%150.00%
Geert Uytterhoeven21.56%150.00%
Total128100.00%2100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Michael Schmitz46100.00%1100.00%
Total46100.00%1100.00%


static void atamouse_close(struct input_dev *dev) { ikbd_mouse_disable(); atari_input_mouse_interrupt_hook = NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Michael Schmitz18100.00%2100.00%
Total18100.00%2100.00%


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 = 0x0001; atamouse_dev->id.product = 0x0002; atamouse_dev->id.version = 0x0100; 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; }

Contributors

PersonTokensPropCommitsCommitProp
Michael Schmitz15982.81%240.00%
Geert Uytterhoeven157.81%120.00%
Dmitry Torokhov105.21%120.00%
Jiri Slaby84.17%120.00%
Total192100.00%5100.00%


static void __exit atamouse_exit(void) { input_unregister_device(atamouse_dev); }

Contributors

PersonTokensPropCommitsCommitProp
Michael Schmitz14100.00%1100.00%
Total14100.00%1100.00%

module_init(atamouse_init); module_exit(atamouse_exit);

Overall Contributors

PersonTokensPropCommitsCommitProp
Michael Schmitz45391.52%337.50%
Geert Uytterhoeven173.43%225.00%
Dmitry Torokhov163.23%112.50%
Jiri Slaby81.62%112.50%
Linus Torvalds10.20%112.50%
Total495100.00%8100.00%
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