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/* this is both a PS/2 keyboard AND a PS/2 MOUSE driver */
#include <stdint.h>
#include <stdio.h>
#include "io.h"
#include "isr.h"
#include "ps2.h"
static void ps2_wait(void)
{
/* wait for the keyboard */
while(1)
if ((inb(0x64) & 2) == 0) break;
}
void ps2_set_leds(uint8_t status)
{
ps2_wait();
outb(0x60, 0xED);
outb(0x60, status);
}
static void key_handler(struct regs_t regs)
{
(void) regs;
uint8_t scancode = inb(0x60);
(void) scancode;
/* TODO: handle scancode */
/*printf("key %x\n", scancode);*/
}
static void ps2_set_scancode_set(uint8_t set)
{
ps2_wait();
outb(0x60, 0xF0);
outb(0x60, set);
}
static void keyboard_init(void)
{
set_interrupt_handler(IRQ(1), key_handler);
ps2_set_scancode_set(1);
}
static void mouse_handler(struct regs_t regs)
{
(void) regs;
printf("mouse action!\n");
}
static void mouse_init(void)
{
/* enable IRQ12 */
set_interrupt_handler(IRQ(12), mouse_handler);
/* make the ps/2 controller generate IRQ12 */
outb(0x64, 0x20);
uint8_t status = inb(0x64);
/* set bit 1 and unset bit 5 */
status |= (1 << 1);
status &= ~(1 << 5);
outb(0x64, 0x60);
outb(0x60, status);
}
void ps2_init(void)
{
keyboard_init();
mouse_init();
}
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