cregit-Linux how code gets into the kernel

Release 4.11 drivers/input/mouse/inport.c

/*
 *  Copyright (c) 1999-2001 Vojtech Pavlik
 *
 *  Based on the work of:
 *      Teemu Rantanen          Derrick Cole
 *      Peter Cervasio          Christoph Niemann
 *      Philip Blundell         Russell King
 *      Bob Harris
 */

/*
 * Inport (ATI XL and Microsoft) busmouse driver for Linux
 */

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * Should you need to contact me, the author, you can do so either by
 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
 */

#include <linux/module.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/input.h>

#include <asm/io.h>
#include <asm/irq.h>

MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION("Inport (ATI XL and Microsoft) busmouse driver");
MODULE_LICENSE("GPL");


#define INPORT_BASE		0x23c

#define INPORT_EXTENT		4


#define INPORT_CONTROL_PORT	INPORT_BASE + 0

#define INPORT_DATA_PORT	INPORT_BASE + 1

#define INPORT_SIGNATURE_PORT	INPORT_BASE + 2


#define INPORT_REG_BTNS	0x00

#define INPORT_REG_X		0x01

#define INPORT_REG_Y		0x02

#define INPORT_REG_MODE		0x07

#define INPORT_RESET		0x80

#ifdef CONFIG_MOUSE_ATIXL

#define INPORT_NAME		"ATI XL Mouse"

#define INPORT_VENDOR		0x0002

#define INPORT_SPEED_30HZ	0x01

#define INPORT_SPEED_50HZ	0x02

#define INPORT_SPEED_100HZ	0x03

#define INPORT_SPEED_200HZ	0x04

#define INPORT_MODE_BASE	INPORT_SPEED_100HZ

#define INPORT_MODE_IRQ		0x08
#else

#define INPORT_NAME		"Microsoft InPort Mouse"

#define INPORT_VENDOR		0x0001

#define INPORT_MODE_BASE	0x10

#define INPORT_MODE_IRQ		0x01
#endif

#define INPORT_MODE_HOLD	0x20


#define INPORT_IRQ		5


static int inport_irq = INPORT_IRQ;
module_param_named(irq, inport_irq, uint, 0);
MODULE_PARM_DESC(irq, "IRQ number (5=default)");


static struct input_dev *inport_dev;


static irqreturn_t inport_interrupt(int irq, void *dev_id) { unsigned char buttons; outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); outb(INPORT_MODE_HOLD | INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); outb(INPORT_REG_X, INPORT_CONTROL_PORT); input_report_rel(inport_dev, REL_X, inb(INPORT_DATA_PORT)); outb(INPORT_REG_Y, INPORT_CONTROL_PORT); input_report_rel(inport_dev, REL_Y, inb(INPORT_DATA_PORT)); outb(INPORT_REG_BTNS, INPORT_CONTROL_PORT); buttons = inb(INPORT_DATA_PORT); input_report_key(inport_dev, BTN_MIDDLE, buttons & 1); input_report_key(inport_dev, BTN_LEFT, buttons & 2); input_report_key(inport_dev, BTN_RIGHT, buttons & 4); outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); input_sync(inport_dev); return IRQ_HANDLED; }

Contributors

PersonTokensPropCommitsCommitProp
Vojtech Pavlik14097.22%266.67%
Andrew Morton42.78%133.33%
Total144100.00%3100.00%


static int inport_open(struct input_dev *dev) { if (request_irq(inport_irq, inport_interrupt, 0, "inport", NULL)) return -EBUSY; outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov49100.00%1100.00%
Total49100.00%1100.00%


static void inport_close(struct input_dev *dev) { outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); outb(INPORT_MODE_BASE, INPORT_DATA_PORT); free_irq(inport_irq, NULL); }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov32100.00%1100.00%
Total32100.00%1100.00%


static int __init inport_init(void) { unsigned char a, b, c; int err; if (!request_region(INPORT_BASE, INPORT_EXTENT, "inport")) { printk(KERN_ERR "inport.c: Can't allocate ports at %#x\n", INPORT_BASE); return -EBUSY; } a = inb(INPORT_SIGNATURE_PORT); b = inb(INPORT_SIGNATURE_PORT); c = inb(INPORT_SIGNATURE_PORT); if (a == b || a != c) { printk(KERN_INFO "inport.c: Didn't find InPort mouse at %#x\n", INPORT_BASE); err = -ENODEV; goto err_release_region; } inport_dev = input_allocate_device(); if (!inport_dev) { printk(KERN_ERR "inport.c: Not enough memory for input device\n"); err = -ENOMEM; goto err_release_region; } inport_dev->name = INPORT_NAME; inport_dev->phys = "isa023c/input0"; inport_dev->id.bustype = BUS_ISA; inport_dev->id.vendor = INPORT_VENDOR; inport_dev->id.product = 0x0001; inport_dev->id.version = 0x0100; inport_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); inport_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); inport_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); inport_dev->open = inport_open; inport_dev->close = inport_close; outb(INPORT_RESET, INPORT_CONTROL_PORT); outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); outb(INPORT_MODE_BASE, INPORT_DATA_PORT); err = input_register_device(inport_dev); if (err) goto err_free_dev; return 0; err_free_dev: input_free_device(inport_dev); err_release_region: release_region(INPORT_BASE, INPORT_EXTENT); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov17058.02%233.33%
Vojtech Pavlik11438.91%233.33%
Jiri Slaby82.73%116.67%
Helge Deller10.34%116.67%
Total293100.00%6100.00%


static void __exit inport_exit(void) { input_unregister_device(inport_dev); release_region(INPORT_BASE, INPORT_EXTENT); }

Contributors

PersonTokensPropCommitsCommitProp
Vojtech Pavlik21100.00%1100.00%
Total21100.00%1100.00%

module_init(inport_init); module_exit(inport_exit);

Overall Contributors

PersonTokensPropCommitsCommitProp
Vojtech Pavlik42659.08%323.08%
Dmitry Torokhov25335.09%323.08%
Andrew Morton223.05%215.38%
Arnaldo Carvalho de Melo91.25%17.69%
Jiri Slaby81.11%17.69%
Helge Deller10.14%17.69%
Robert P. J. Day10.14%17.69%
Adrian Bunk10.14%17.69%
Total721100.00%13100.00%
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