9d86b7d370
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
188 lines
4 KiB
C
188 lines
4 KiB
C
/*
|
|
* Driver for PC-speaker like devices found on various Sparc systems.
|
|
*
|
|
* Copyright (c) 2002 Vojtech Pavlik
|
|
* Copyright (c) 2002 David S. Miller (davem@redhat.com)
|
|
*/
|
|
#include <linux/config.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/input.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/ebus.h>
|
|
#ifdef CONFIG_SPARC64
|
|
#include <asm/isa.h>
|
|
#endif
|
|
|
|
MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
|
|
MODULE_DESCRIPTION("Sparc Speaker beeper driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static unsigned long beep_iobase;
|
|
static struct input_dev *sparcspkr_dev;
|
|
|
|
DEFINE_SPINLOCK(beep_lock);
|
|
|
|
static void __init init_sparcspkr_struct(void)
|
|
{
|
|
sparcspkr_dev->evbit[0] = BIT(EV_SND);
|
|
sparcspkr_dev->sndbit[0] = BIT(SND_BELL) | BIT(SND_TONE);
|
|
|
|
sparcspkr_dev->phys = "sparc/input0";
|
|
sparcspkr_dev->id.bustype = BUS_ISA;
|
|
sparcspkr_dev->id.vendor = 0x001f;
|
|
sparcspkr_dev->id.product = 0x0001;
|
|
sparcspkr_dev->id.version = 0x0100;
|
|
}
|
|
|
|
static int ebus_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
|
|
{
|
|
unsigned int count = 0;
|
|
unsigned long flags;
|
|
|
|
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;
|
|
|
|
spin_lock_irqsave(&beep_lock, flags);
|
|
|
|
/* EBUS speaker only has on/off state, the frequency does not
|
|
* appear to be programmable.
|
|
*/
|
|
if (count) {
|
|
if (beep_iobase & 0x2UL)
|
|
outb(1, beep_iobase);
|
|
else
|
|
outl(1, beep_iobase);
|
|
} else {
|
|
if (beep_iobase & 0x2UL)
|
|
outb(0, beep_iobase);
|
|
else
|
|
outl(0, beep_iobase);
|
|
}
|
|
|
|
spin_unlock_irqrestore(&beep_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __init init_ebus_beep(struct linux_ebus_device *edev)
|
|
{
|
|
beep_iobase = edev->resource[0].start;
|
|
|
|
sparcspkr_dev = input_allocate_device();
|
|
if (!sparcspkr_dev)
|
|
return -ENOMEM;
|
|
|
|
sparcspkr_dev->name = "Sparc EBUS Speaker";
|
|
sparcspkr_dev->event = ebus_spkr_event;
|
|
|
|
input_register_device(sparcspkr_dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_SPARC64
|
|
static int isa_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
|
|
{
|
|
unsigned int count = 0;
|
|
unsigned long flags;
|
|
|
|
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;
|
|
|
|
spin_lock_irqsave(&beep_lock, flags);
|
|
|
|
if (count) {
|
|
/* enable counter 2 */
|
|
outb(inb(beep_iobase + 0x61) | 3, beep_iobase + 0x61);
|
|
/* set command for counter 2, 2 byte write */
|
|
outb(0xB6, beep_iobase + 0x43);
|
|
/* select desired HZ */
|
|
outb(count & 0xff, beep_iobase + 0x42);
|
|
outb((count >> 8) & 0xff, beep_iobase + 0x42);
|
|
} else {
|
|
/* disable counter 2 */
|
|
outb(inb_p(beep_iobase + 0x61) & 0xFC, beep_iobase + 0x61);
|
|
}
|
|
|
|
spin_unlock_irqrestore(&beep_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __init init_isa_beep(struct sparc_isa_device *isa_dev)
|
|
{
|
|
beep_iobase = isa_dev->resource.start;
|
|
|
|
sparcspkr_dev = input_allocate_device();
|
|
if (!sparcspkr_dev)
|
|
return -ENOMEM;
|
|
|
|
init_sparcspkr_struct();
|
|
|
|
sparcspkr_dev->name = "Sparc ISA Speaker";
|
|
sparcspkr_dev->event = isa_spkr_event;
|
|
|
|
input_register_device(sparcspkr_dev);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int __init sparcspkr_init(void)
|
|
{
|
|
struct linux_ebus *ebus;
|
|
struct linux_ebus_device *edev = NULL;
|
|
#ifdef CONFIG_SPARC64
|
|
struct sparc_isa_bridge *isa_br;
|
|
struct sparc_isa_device *isa_dev;
|
|
#endif
|
|
|
|
for_each_ebus(ebus) {
|
|
for_each_ebusdev(edev, ebus) {
|
|
if (!strcmp(edev->prom_name, "beep"))
|
|
return init_ebus_beep(edev);
|
|
}
|
|
}
|
|
#ifdef CONFIG_SPARC64
|
|
for_each_isa(isa_br) {
|
|
for_each_isadev(isa_dev, isa_br) {
|
|
/* A hack, the beep device's base lives in
|
|
* the DMA isa node.
|
|
*/
|
|
if (!strcmp(isa_dev->prom_name, "dma"))
|
|
return init_isa_beep(isa_dev);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
static void __exit sparcspkr_exit(void)
|
|
{
|
|
input_unregister_device(sparcspkr_dev);
|
|
}
|
|
|
|
module_init(sparcspkr_init);
|
|
module_exit(sparcspkr_exit);
|