3108d42de4
core takes care of calling open and close methods only
when needed.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
176 lines
4.9 KiB
C
176 lines
4.9 KiB
C
/*
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* $Id: logibm.c,v 1.11 2001/09/25 10:12:07 vojtech Exp $
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*
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* Copyright (c) 1999-2001 Vojtech Pavlik
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*
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* Based on the work of:
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* James Banks Matthew Dillon
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* David Giller Nathan Laredo
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* Linus Torvalds Johan Myreen
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* Cliff Matthews Philip Blundell
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* Russell King
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*/
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/*
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* Logitech Bus Mouse Driver for Linux
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Should you need to contact me, the author, you can do so either by
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* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
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* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/delay.h>
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#include <linux/ioport.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/io.h>
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#include <asm/irq.h>
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MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
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MODULE_DESCRIPTION("Logitech busmouse driver");
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MODULE_LICENSE("GPL");
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#define LOGIBM_BASE 0x23c
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#define LOGIBM_EXTENT 4
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#define LOGIBM_DATA_PORT LOGIBM_BASE + 0
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#define LOGIBM_SIGNATURE_PORT LOGIBM_BASE + 1
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#define LOGIBM_CONTROL_PORT LOGIBM_BASE + 2
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#define LOGIBM_CONFIG_PORT LOGIBM_BASE + 3
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#define LOGIBM_ENABLE_IRQ 0x00
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#define LOGIBM_DISABLE_IRQ 0x10
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#define LOGIBM_READ_X_LOW 0x80
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#define LOGIBM_READ_X_HIGH 0xa0
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#define LOGIBM_READ_Y_LOW 0xc0
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#define LOGIBM_READ_Y_HIGH 0xe0
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#define LOGIBM_DEFAULT_MODE 0x90
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#define LOGIBM_CONFIG_BYTE 0x91
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#define LOGIBM_SIGNATURE_BYTE 0xa5
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#define LOGIBM_IRQ 5
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static int logibm_irq = LOGIBM_IRQ;
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module_param_named(irq, logibm_irq, uint, 0);
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MODULE_PARM_DESC(irq, "IRQ number (5=default)");
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__obsolete_setup("logibm_irq=");
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static irqreturn_t logibm_interrupt(int irq, void *dev_id, struct pt_regs *regs);
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static int logibm_open(struct input_dev *dev)
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{
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if (request_irq(logibm_irq, logibm_interrupt, 0, "logibm", NULL)) {
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printk(KERN_ERR "logibm.c: Can't allocate irq %d\n", logibm_irq);
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return -EBUSY;
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}
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outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT);
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return 0;
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}
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static void logibm_close(struct input_dev *dev)
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{
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outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT);
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free_irq(logibm_irq, NULL);
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}
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static struct input_dev logibm_dev = {
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.evbit = { BIT(EV_KEY) | BIT(EV_REL) },
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.keybit = { [LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT) },
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.relbit = { BIT(REL_X) | BIT(REL_Y) },
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.open = logibm_open,
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.close = logibm_close,
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.name = "Logitech bus mouse",
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.phys = "isa023c/input0",
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.id = {
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.bustype = BUS_ISA,
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.vendor = 0x0003,
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.product = 0x0001,
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.version = 0x0100,
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},
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};
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static irqreturn_t logibm_interrupt(int irq, void *dev_id, struct pt_regs *regs)
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{
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char dx, dy;
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unsigned char buttons;
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outb(LOGIBM_READ_X_LOW, LOGIBM_CONTROL_PORT);
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dx = (inb(LOGIBM_DATA_PORT) & 0xf);
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outb(LOGIBM_READ_X_HIGH, LOGIBM_CONTROL_PORT);
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dx |= (inb(LOGIBM_DATA_PORT) & 0xf) << 4;
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outb(LOGIBM_READ_Y_LOW, LOGIBM_CONTROL_PORT);
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dy = (inb(LOGIBM_DATA_PORT) & 0xf);
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outb(LOGIBM_READ_Y_HIGH, LOGIBM_CONTROL_PORT);
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buttons = inb(LOGIBM_DATA_PORT);
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dy |= (buttons & 0xf) << 4;
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buttons = ~buttons >> 5;
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input_regs(&logibm_dev, regs);
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input_report_rel(&logibm_dev, REL_X, dx);
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input_report_rel(&logibm_dev, REL_Y, dy);
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input_report_key(&logibm_dev, BTN_RIGHT, buttons & 1);
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input_report_key(&logibm_dev, BTN_MIDDLE, buttons & 2);
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input_report_key(&logibm_dev, BTN_LEFT, buttons & 4);
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input_sync(&logibm_dev);
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outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT);
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return IRQ_HANDLED;
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}
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static int __init logibm_init(void)
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{
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if (!request_region(LOGIBM_BASE, LOGIBM_EXTENT, "logibm")) {
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printk(KERN_ERR "logibm.c: Can't allocate ports at %#x\n", LOGIBM_BASE);
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return -EBUSY;
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}
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outb(LOGIBM_CONFIG_BYTE, LOGIBM_CONFIG_PORT);
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outb(LOGIBM_SIGNATURE_BYTE, LOGIBM_SIGNATURE_PORT);
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udelay(100);
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if (inb(LOGIBM_SIGNATURE_PORT) != LOGIBM_SIGNATURE_BYTE) {
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release_region(LOGIBM_BASE, LOGIBM_EXTENT);
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printk(KERN_ERR "logibm.c: Didn't find Logitech busmouse at %#x\n", LOGIBM_BASE);
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return -ENODEV;
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}
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outb(LOGIBM_DEFAULT_MODE, LOGIBM_CONFIG_PORT);
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outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT);
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input_register_device(&logibm_dev);
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printk(KERN_INFO "input: Logitech bus mouse at %#x irq %d\n", LOGIBM_BASE, logibm_irq);
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return 0;
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}
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static void __exit logibm_exit(void)
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{
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input_unregister_device(&logibm_dev);
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release_region(LOGIBM_BASE, LOGIBM_EXTENT);
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}
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module_init(logibm_init);
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module_exit(logibm_exit);
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