cregit-Linux how code gets into the kernel

Release 4.11 drivers/input/mouse/amimouse.c

/*
 *  Amiga mouse driver for Linux/m68k
 *
 *  Copyright (c) 2000-2002 Vojtech Pavlik
 *
 *  Based on the work of:
 *      Michael Rausch          James Banks
 *      Matther Dillon          David Giller
 *      Nathan Laredo           Linus Torvalds
 *      Johan Myreen            Jes Sorensen
 *      Russell King
 */

/*
 * 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 <linux/platform_device.h>

#include <asm/irq.h>
#include <asm/setup.h>
#include <linux/uaccess.h>
#include <asm/amigahw.h>
#include <asm/amigaints.h>

MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION("Amiga mouse driver");
MODULE_LICENSE("GPL");



static int amimouse_lastx, amimouse_lasty;


static irqreturn_t amimouse_interrupt(int irq, void *data) { struct input_dev *dev = data; unsigned short joy0dat, potgor; int nx, ny, dx, dy; joy0dat = amiga_custom.joy0dat; nx = joy0dat & 0xff; ny = joy0dat >> 8; dx = nx - amimouse_lastx; dy = ny - amimouse_lasty; if (dx < -127) dx = (256 + nx) - amimouse_lastx; if (dx > 127) dx = (nx - 256) - amimouse_lastx; if (dy < -127) dy = (256 + ny) - amimouse_lasty; if (dy > 127) dy = (ny - 256) - amimouse_lasty; amimouse_lastx = nx; amimouse_lasty = ny; potgor = amiga_custom.potgor; input_report_rel(dev, REL_X, dx); input_report_rel(dev, REL_Y, dy); input_report_key(dev, BTN_LEFT, ciaa.pra & 0x40); input_report_key(dev, BTN_MIDDLE, potgor & 0x0100); input_report_key(dev, BTN_RIGHT, potgor & 0x0400); input_sync(dev); return IRQ_HANDLED; }

Contributors

PersonTokensPropCommitsCommitProp
Vojtech Pavlik18690.29%350.00%
Geert Uytterhoeven188.74%233.33%
Al Viro20.97%116.67%
Total206100.00%6100.00%


static int amimouse_open(struct input_dev *dev) { unsigned short joy0dat; int error; joy0dat = amiga_custom.joy0dat; amimouse_lastx = joy0dat & 0xff; amimouse_lasty = joy0dat >> 8; error = request_irq(IRQ_AMIGA_VERTB, amimouse_interrupt, 0, "amimouse", dev); if (error) dev_err(&dev->dev, "Can't allocate irq %d\n", IRQ_AMIGA_VERTB); return error; }

Contributors

PersonTokensPropCommitsCommitProp
Vojtech Pavlik5071.43%125.00%
Geert Uytterhoeven1927.14%250.00%
Al Viro11.43%125.00%
Total70100.00%4100.00%


static void amimouse_close(struct input_dev *dev) { free_irq(IRQ_AMIGA_VERTB, dev); }

Contributors

PersonTokensPropCommitsCommitProp
Vojtech Pavlik1794.44%150.00%
Geert Uytterhoeven15.56%150.00%
Total18100.00%2100.00%


static int __init amimouse_probe(struct platform_device *pdev) { int err; struct input_dev *dev; dev = input_allocate_device(); if (!dev) return -ENOMEM; dev->name = pdev->name; dev->phys = "amimouse/input0"; dev->id.bustype = BUS_AMIGA; dev->id.vendor = 0x0001; dev->id.product = 0x0002; dev->id.version = 0x0100; dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); dev->open = amimouse_open; dev->close = amimouse_close; dev->dev.parent = &pdev->dev; err = input_register_device(dev); if (err) { input_free_device(dev); return err; } platform_set_drvdata(pdev, dev); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov7136.79%233.33%
Vojtech Pavlik6533.68%116.67%
Geert Uytterhoeven4925.39%233.33%
Jiri Slaby84.15%116.67%
Total193100.00%6100.00%


static int __exit amimouse_remove(struct platform_device *pdev) { struct input_dev *dev = platform_get_drvdata(pdev); input_unregister_device(dev); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Geert Uytterhoeven2170.00%150.00%
Vojtech Pavlik930.00%150.00%
Total30100.00%2100.00%

static struct platform_driver amimouse_driver = { .remove = __exit_p(amimouse_remove), .driver = { .name = "amiga-mouse", }, }; module_platform_driver_probe(amimouse_driver, amimouse_probe); MODULE_ALIAS("platform:amiga-mouse");

Overall Contributors

PersonTokensPropCommitsCommitProp
Vojtech Pavlik37361.45%321.43%
Geert Uytterhoeven14423.72%428.57%
Dmitry Torokhov7712.69%321.43%
Jiri Slaby81.32%17.14%
Al Viro30.49%17.14%
Linus Torvalds10.16%17.14%
Sachin Kamat10.16%17.14%
Total607100.00%14100.00%
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