PS/2 KB driver ignore ack byte

kernel/device/ps2_kb.c

@@ -151,7 +151,7 @@ static void ps2kb_irq (void* arg, void* regs, struct reschedule_ctx* rctx) {
 
   int32_t keycode = ps2kb_keycode ();
 
-  if (keycode <= 0)
+  if (keycode <= 0 || keycode == 0xFA)
     return;
 
   spin_lock (&ps2kb_ringbuffer_lock);
@@ -217,6 +217,18 @@ int ps2kb_read_key (struct device* device, struct proc* proc, struct reschedule_
   return ST_OK;
 }
 
+static void ps2kb_set_typematic (uint8_t delay, uint8_t rate) {
+  while (inb (KB_CTL_STATUS) & 0x02)
+    ;
+
+  outb (KB_DATA, 0xF3);
+
+  while (inb (KB_CTL_STATUS) & 0x02)
+    ;
+
+  outb (KB_DATA, (delay << 5) | (rate & 0x1F));
+}
+
 bool ps2kb_init (struct device* device, void* arg) {
   (void)device, (void)arg;
 
@@ -237,6 +249,9 @@ bool ps2kb_init (struct device* device, void* arg) {
   outb (KB_CTL_STATUS, 0x60);
   outb (KB_DATA, cb);
 
+  /* 250ms delay, 30hz rate */
+  ps2kb_set_typematic (0x00, 0x00);
+
   return true;
 }