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/*
* m68k beeper driver for Linux
*
* Copyright (c) 2002 Richard Zidlicky
* Copyright (c) 2002 Vojtech Pavlik
* Copyright (c) 1992 Orest Zborowski
*
*/
/*
* 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/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/input.h>
#include <asm/machdep.h>
#include <asm/io.h>
MODULE_AUTHOR("Richard Zidlicky <rz@linux-m68k.org>");
MODULE_DESCRIPTION("m68k beeper driver");
MODULE_LICENSE("GPL");
static struct input_dev *m68kspkr_dev;
static int m68kspkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
{
unsigned int count = 0;
if (type != EV_SND)
return -1;
switch (code) {
case SND_BELL: if (value) value = 1000;
case SND_TONE: break;
default: return -1;
}
if (value > 20 && value < 32767)
count = 1193182 / value;
mach_beep(count, -1);
return 0;
}
static int __init m68kspkr_init(void)
{
if (!mach_beep) {
printk(KERN_INFO "m68kspkr: no lowlevel beep support\n");
return -ENODEV;
}
m68kspkr_dev = input_allocate_device();
if (!m68kspkr_dev)
return -ENOMEM;
m68kspkr_dev->name = "m68k beeper";
m68kspkr_dev->phys = "m68k/generic";
m68kspkr_dev->id.bustype = BUS_HOST;
m68kspkr_dev->id.vendor = 0x001f;
m68kspkr_dev->id.product = 0x0001;
m68kspkr_dev->id.version = 0x0100;
m68kspkr_dev->evbit[0] = BIT(EV_SND);
m68kspkr_dev->sndbit[0] = BIT(SND_BELL) | BIT(SND_TONE);
m68kspkr_dev->event = m68kspkr_event;
input_register_device(m68kspkr_dev);
return 0;
}
static void __exit m68kspkr_exit(void)
{
input_unregister_device(m68kspkr_dev);
}
module_init(m68kspkr_init);
module_exit(m68kspkr_exit);
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