mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 10:46:40 +07:00
631dd1a885
The patch below updates broken web addresses in the kernel Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Finn Thain <fthain@telegraphics.com.au> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Dimitry Torokhov <dmitry.torokhov@gmail.com> Cc: Mike Frysinger <vapier.adi@gmail.com> Acked-by: Ben Pfaff <blp@cs.stanford.edu> Acked-by: Hans J. Koch <hjk@linutronix.de> Reviewed-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
220 lines
5.7 KiB
C
220 lines
5.7 KiB
C
/*
|
|
* ICS MK712 touchscreen controller driver
|
|
*
|
|
* Copyright (c) 1999-2002 Transmeta Corporation
|
|
* Copyright (c) 2005 Rick Koch <n1gp@hotmail.com>
|
|
* Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
|
|
*/
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* This driver supports the ICS MicroClock MK712 TouchScreen controller,
|
|
* found in Gateway AOL Connected Touchpad computers.
|
|
*
|
|
* Documentation for ICS MK712 can be found at:
|
|
* http://www.idt.com/products/getDoc.cfm?docID=18713923
|
|
*/
|
|
|
|
/*
|
|
* 1999-12-18: original version, Daniel Quinlan
|
|
* 1999-12-19: added anti-jitter code, report pen-up events, fixed mk712_poll
|
|
* to use queue_empty, Nathan Laredo
|
|
* 1999-12-20: improved random point rejection, Nathan Laredo
|
|
* 2000-01-05: checked in new anti-jitter code, changed mouse protocol, fixed
|
|
* queue code, added module options, other fixes, Daniel Quinlan
|
|
* 2002-03-15: Clean up for kernel merge <alan@redhat.com>
|
|
* Fixed multi open race, fixed memory checks, fixed resource
|
|
* allocation, fixed close/powerdown bug, switched to new init
|
|
* 2005-01-18: Ported to 2.6 from 2.4.28, Rick Koch
|
|
* 2005-02-05: Rewritten for the input layer, Vojtech Pavlik
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/input.h>
|
|
#include <asm/io.h>
|
|
|
|
MODULE_AUTHOR("Daniel Quinlan <quinlan@pathname.com>, Vojtech Pavlik <vojtech@suse.cz>");
|
|
MODULE_DESCRIPTION("ICS MicroClock MK712 TouchScreen driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static unsigned int mk712_io = 0x260; /* Also 0x200, 0x208, 0x300 */
|
|
module_param_named(io, mk712_io, uint, 0);
|
|
MODULE_PARM_DESC(io, "I/O base address of MK712 touchscreen controller");
|
|
|
|
static unsigned int mk712_irq = 10; /* Also 12, 14, 15 */
|
|
module_param_named(irq, mk712_irq, uint, 0);
|
|
MODULE_PARM_DESC(irq, "IRQ of MK712 touchscreen controller");
|
|
|
|
/* eight 8-bit registers */
|
|
#define MK712_STATUS 0
|
|
#define MK712_X 2
|
|
#define MK712_Y 4
|
|
#define MK712_CONTROL 6
|
|
#define MK712_RATE 7
|
|
|
|
/* status */
|
|
#define MK712_STATUS_TOUCH 0x10
|
|
#define MK712_CONVERSION_COMPLETE 0x80
|
|
|
|
/* control */
|
|
#define MK712_ENABLE_INT 0x01
|
|
#define MK712_INT_ON_CONVERSION_COMPLETE 0x02
|
|
#define MK712_INT_ON_CHANGE_IN_TOUCH_STATUS 0x04
|
|
#define MK712_ENABLE_PERIODIC_CONVERSIONS 0x10
|
|
#define MK712_READ_ONE_POINT 0x20
|
|
#define MK712_POWERUP 0x40
|
|
|
|
static struct input_dev *mk712_dev;
|
|
static DEFINE_SPINLOCK(mk712_lock);
|
|
|
|
static irqreturn_t mk712_interrupt(int irq, void *dev_id)
|
|
{
|
|
unsigned char status;
|
|
static int debounce = 1;
|
|
static unsigned short last_x;
|
|
static unsigned short last_y;
|
|
|
|
spin_lock(&mk712_lock);
|
|
|
|
status = inb(mk712_io + MK712_STATUS);
|
|
|
|
if (~status & MK712_CONVERSION_COMPLETE) {
|
|
debounce = 1;
|
|
goto end;
|
|
}
|
|
|
|
if (~status & MK712_STATUS_TOUCH) {
|
|
debounce = 1;
|
|
input_report_key(mk712_dev, BTN_TOUCH, 0);
|
|
goto end;
|
|
}
|
|
|
|
if (debounce) {
|
|
debounce = 0;
|
|
goto end;
|
|
}
|
|
|
|
input_report_key(mk712_dev, BTN_TOUCH, 1);
|
|
input_report_abs(mk712_dev, ABS_X, last_x);
|
|
input_report_abs(mk712_dev, ABS_Y, last_y);
|
|
|
|
end:
|
|
last_x = inw(mk712_io + MK712_X) & 0x0fff;
|
|
last_y = inw(mk712_io + MK712_Y) & 0x0fff;
|
|
input_sync(mk712_dev);
|
|
spin_unlock(&mk712_lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int mk712_open(struct input_dev *dev)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&mk712_lock, flags);
|
|
|
|
outb(0, mk712_io + MK712_CONTROL); /* Reset */
|
|
|
|
outb(MK712_ENABLE_INT | MK712_INT_ON_CONVERSION_COMPLETE |
|
|
MK712_INT_ON_CHANGE_IN_TOUCH_STATUS |
|
|
MK712_ENABLE_PERIODIC_CONVERSIONS |
|
|
MK712_POWERUP, mk712_io + MK712_CONTROL);
|
|
|
|
outb(10, mk712_io + MK712_RATE); /* 187 points per second */
|
|
|
|
spin_unlock_irqrestore(&mk712_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mk712_close(struct input_dev *dev)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&mk712_lock, flags);
|
|
|
|
outb(0, mk712_io + MK712_CONTROL);
|
|
|
|
spin_unlock_irqrestore(&mk712_lock, flags);
|
|
}
|
|
|
|
static int __init mk712_init(void)
|
|
{
|
|
int err;
|
|
|
|
if (!request_region(mk712_io, 8, "mk712")) {
|
|
printk(KERN_WARNING "mk712: unable to get IO region\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
outb(0, mk712_io + MK712_CONTROL);
|
|
|
|
if ((inw(mk712_io + MK712_X) & 0xf000) || /* Sanity check */
|
|
(inw(mk712_io + MK712_Y) & 0xf000) ||
|
|
(inw(mk712_io + MK712_STATUS) & 0xf333)) {
|
|
printk(KERN_WARNING "mk712: device not present\n");
|
|
err = -ENODEV;
|
|
goto fail1;
|
|
}
|
|
|
|
mk712_dev = input_allocate_device();
|
|
if (!mk712_dev) {
|
|
printk(KERN_ERR "mk712: not enough memory\n");
|
|
err = -ENOMEM;
|
|
goto fail1;
|
|
}
|
|
|
|
mk712_dev->name = "ICS MicroClock MK712 TouchScreen";
|
|
mk712_dev->phys = "isa0260/input0";
|
|
mk712_dev->id.bustype = BUS_ISA;
|
|
mk712_dev->id.vendor = 0x0005;
|
|
mk712_dev->id.product = 0x0001;
|
|
mk712_dev->id.version = 0x0100;
|
|
|
|
mk712_dev->open = mk712_open;
|
|
mk712_dev->close = mk712_close;
|
|
|
|
mk712_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
|
|
mk712_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
|
|
input_set_abs_params(mk712_dev, ABS_X, 0, 0xfff, 88, 0);
|
|
input_set_abs_params(mk712_dev, ABS_Y, 0, 0xfff, 88, 0);
|
|
|
|
if (request_irq(mk712_irq, mk712_interrupt, 0, "mk712", mk712_dev)) {
|
|
printk(KERN_WARNING "mk712: unable to get IRQ\n");
|
|
err = -EBUSY;
|
|
goto fail1;
|
|
}
|
|
|
|
err = input_register_device(mk712_dev);
|
|
if (err)
|
|
goto fail2;
|
|
|
|
return 0;
|
|
|
|
fail2: free_irq(mk712_irq, mk712_dev);
|
|
fail1: input_free_device(mk712_dev);
|
|
release_region(mk712_io, 8);
|
|
return err;
|
|
}
|
|
|
|
static void __exit mk712_exit(void)
|
|
{
|
|
input_unregister_device(mk712_dev);
|
|
free_irq(mk712_irq, mk712_dev);
|
|
release_region(mk712_io, 8);
|
|
}
|
|
|
|
module_init(mk712_init);
|
|
module_exit(mk712_exit);
|