mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-12 13:55:32 +00:00
![Adrian Bunk](/assets/img/avatar_default.png)
This patch removes CVS keywords that weren't updated for a long time from comments. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
183 lines
4.6 KiB
C
183 lines
4.6 KiB
C
/*
|
|
* Copyright (c) 2000-2001 Vojtech Pavlik
|
|
*
|
|
* Based on the work of:
|
|
* Alan Cox Robin O'Leary
|
|
*/
|
|
|
|
/*
|
|
* IBM PC110 touchpad 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/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/input.h>
|
|
#include <linux/init.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/delay.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/irq.h>
|
|
|
|
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
|
|
MODULE_DESCRIPTION("IBM PC110 touchpad driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
#define PC110PAD_OFF 0x30
|
|
#define PC110PAD_ON 0x38
|
|
|
|
static int pc110pad_irq = 10;
|
|
static int pc110pad_io = 0x15e0;
|
|
|
|
static struct input_dev *pc110pad_dev;
|
|
static int pc110pad_data[3];
|
|
static int pc110pad_count;
|
|
|
|
static irqreturn_t pc110pad_interrupt(int irq, void *ptr)
|
|
{
|
|
int value = inb_p(pc110pad_io);
|
|
int handshake = inb_p(pc110pad_io + 2);
|
|
|
|
outb(handshake | 1, pc110pad_io + 2);
|
|
udelay(2);
|
|
outb(handshake & ~1, pc110pad_io + 2);
|
|
udelay(2);
|
|
inb_p(0x64);
|
|
|
|
pc110pad_data[pc110pad_count++] = value;
|
|
|
|
if (pc110pad_count < 3)
|
|
return IRQ_HANDLED;
|
|
|
|
input_report_key(pc110pad_dev, BTN_TOUCH,
|
|
pc110pad_data[0] & 0x01);
|
|
input_report_abs(pc110pad_dev, ABS_X,
|
|
pc110pad_data[1] | ((pc110pad_data[0] << 3) & 0x80) | ((pc110pad_data[0] << 1) & 0x100));
|
|
input_report_abs(pc110pad_dev, ABS_Y,
|
|
pc110pad_data[2] | ((pc110pad_data[0] << 4) & 0x80));
|
|
input_sync(pc110pad_dev);
|
|
|
|
pc110pad_count = 0;
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void pc110pad_close(struct input_dev *dev)
|
|
{
|
|
outb(PC110PAD_OFF, pc110pad_io + 2);
|
|
}
|
|
|
|
static int pc110pad_open(struct input_dev *dev)
|
|
{
|
|
pc110pad_interrupt(0, NULL);
|
|
pc110pad_interrupt(0, NULL);
|
|
pc110pad_interrupt(0, NULL);
|
|
outb(PC110PAD_ON, pc110pad_io + 2);
|
|
pc110pad_count = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* We try to avoid enabling the hardware if it's not
|
|
* there, but we don't know how to test. But we do know
|
|
* that the PC110 is not a PCI system. So if we find any
|
|
* PCI devices in the machine, we don't have a PC110.
|
|
*/
|
|
static int __init pc110pad_init(void)
|
|
{
|
|
struct pci_dev *dev;
|
|
int err;
|
|
|
|
dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
|
|
if (dev) {
|
|
pci_dev_put(dev);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!request_region(pc110pad_io, 4, "pc110pad")) {
|
|
printk(KERN_ERR "pc110pad: I/O area %#x-%#x in use.\n",
|
|
pc110pad_io, pc110pad_io + 4);
|
|
return -EBUSY;
|
|
}
|
|
|
|
outb(PC110PAD_OFF, pc110pad_io + 2);
|
|
|
|
if (request_irq(pc110pad_irq, pc110pad_interrupt, 0, "pc110pad", NULL)) {
|
|
printk(KERN_ERR "pc110pad: Unable to get irq %d.\n", pc110pad_irq);
|
|
err = -EBUSY;
|
|
goto err_release_region;
|
|
}
|
|
|
|
pc110pad_dev = input_allocate_device();
|
|
if (!pc110pad_dev) {
|
|
printk(KERN_ERR "pc110pad: Not enough memory.\n");
|
|
err = -ENOMEM;
|
|
goto err_free_irq;
|
|
}
|
|
|
|
pc110pad_dev->name = "IBM PC110 TouchPad";
|
|
pc110pad_dev->phys = "isa15e0/input0";
|
|
pc110pad_dev->id.bustype = BUS_ISA;
|
|
pc110pad_dev->id.vendor = 0x0003;
|
|
pc110pad_dev->id.product = 0x0001;
|
|
pc110pad_dev->id.version = 0x0100;
|
|
|
|
pc110pad_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
|
|
pc110pad_dev->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y);
|
|
pc110pad_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
|
|
|
|
pc110pad_dev->absmax[ABS_X] = 0x1ff;
|
|
pc110pad_dev->absmax[ABS_Y] = 0x0ff;
|
|
|
|
pc110pad_dev->open = pc110pad_open;
|
|
pc110pad_dev->close = pc110pad_close;
|
|
|
|
err = input_register_device(pc110pad_dev);
|
|
if (err)
|
|
goto err_free_dev;
|
|
|
|
return 0;
|
|
|
|
err_free_dev:
|
|
input_free_device(pc110pad_dev);
|
|
err_free_irq:
|
|
free_irq(pc110pad_irq, NULL);
|
|
err_release_region:
|
|
release_region(pc110pad_io, 4);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void __exit pc110pad_exit(void)
|
|
{
|
|
outb(PC110PAD_OFF, pc110pad_io + 2);
|
|
free_irq(pc110pad_irq, NULL);
|
|
input_unregister_device(pc110pad_dev);
|
|
release_region(pc110pad_io, 4);
|
|
}
|
|
|
|
module_init(pc110pad_init);
|
|
module_exit(pc110pad_exit);
|