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/* $Id: kbd-std.c,v 1.2 1999/06/11 14:29:45 ralf Exp $
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Routines for standard PC style keyboards accessible via I/O ports.
*
* Copyright (C) 1998, 1999 by Ralf Baechle
*/
#include <linux/ioport.h>
#include <linux/sched.h>
#include <linux/pc_keyb.h>
#include <asm/keyboard.h>
#include <asm/io.h>
#define KEYBOARD_IRQ 1
#define AUX_IRQ 12
static void std_kbd_request_region(void)
{
request_region(0x60, 16, "keyboard");
}
static int std_kbd_request_irq(void (*handler)(int, void *, struct pt_regs *))
{
return request_irq(KEYBOARD_IRQ, handler, 0, "keyboard", NULL);
}
static int std_aux_request_irq(void (*handler)(int, void *, struct pt_regs *))
{
return request_irq(AUX_IRQ, handler, 0, "PS/2 Mouse", NULL);
}
static void std_aux_free_irq(void)
{
free_irq(AUX_IRQ, NULL);
}
static unsigned char std_kbd_read_input(void)
{
return inb(KBD_DATA_REG);
}
static void std_kbd_write_output(unsigned char val)
{
int status;
do {
status = inb(KBD_CNTL_REG);
} while (status & KBD_STAT_IBF);
outb(val, KBD_DATA_REG);
}
static void std_kbd_write_command(unsigned char val)
{
int status;
do {
status = inb(KBD_CNTL_REG);
} while (status & KBD_STAT_IBF);
outb(val, KBD_CNTL_REG);
}
static unsigned char std_kbd_read_status(void)
{
return inb(KBD_STATUS_REG);
}
struct kbd_ops std_kbd_ops = {
std_kbd_request_region,
std_kbd_request_irq,
std_aux_request_irq,
std_aux_free_irq,
std_kbd_read_input,
std_kbd_write_output,
std_kbd_write_command,
std_kbd_read_status
};
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