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// MIT License, Copyright (c) 2020 Marvin Borner
#include <cpu.h>
#include <def.h>
#include <interrupts.h>
#include <mem.h>
#include <print.h>
#include <sys.h>
static struct event_keyboard *event = NULL;
static int state = 0;
static int merged = 0;
void keyboard_handler()
{
int scancode = inb(0x60);
// TODO: Support more than two-byte scancodes
if (scancode == 0xe0) {
merged = 0xe0;
state = 1;
return;
} else {
merged = scancode << 8 | merged;
}
// TODO: "Merge" scancode to linux keycode?
/* printf("%x %x = %x\n", scancode, state ? 0xe0 : 0, merged); */
if (event)
free(event);
event = malloc(sizeof(*event));
event->magic = KEYBOARD_MAGIC;
event->press = (scancode & 0x80) == 0;
event->scancode = event->press ? scancode : scancode & ~0x80;
//event_trigger(EVENT_KEYBOARD, event);
state = 0;
merged = 0;
}
void keyboard_acknowledge(void)
{
while (inb(0x60) != 0xfa)
;
}
void keyboard_rate(void)
{
outb(0x60, 0xF3);
keyboard_acknowledge();
outb(0x60, 0x0); // Rate{00000} Delay{00} 0
}
void keyboard_install(void)
{
//keyboard_rate(); TODO: Fix keyboard rate?
irq_install_handler(1, keyboard_handler);
}
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