1 #include <console/console.h>
2 #include <pc80/keyboard.h>
3 #include <device/device.h>
6 static int kbd_empty_input_buffer(void)
9 for(timeout = 1000000; timeout && (inb(0x64) & 0x02); timeout--) {
15 static int kbd_empty_output_buffer(void)
17 unsigned long timeout;
18 for(timeout = 1000000; timeout && ((inb(0x64) & 0x01) == 0); timeout--) {
24 /* much better keyboard init courtesy ollie@sis.com.tw
25 TODO: Typematic Setting, the keyboard is too slow for me */
26 static void pc_keyboard_init(struct pc_keyboard *keyboard)
30 printk_debug("Keyboard init...\n");
31 /* send cmd = 0xAA, self test 8042 */
34 /* empty input buffer or any other command/data will be lost */
35 if (!kbd_empty_input_buffer()) {
36 printk_err("Keyboard input buffer would not empty\n");
40 /* empty output buffer or any other command/data will be lost */
41 if (!kbd_empty_output_buffer()) {
42 printk_err("Keyboard output buffer would not empty\n");
46 /* read self-test result, 0x55 should be returned form 0x60 */
47 if ((regval = inb(0x60) != 0x55)) {
48 printk_err("Keyboard selftest failed\n");
52 /* enable keyboard interface */
54 kbd_empty_input_buffer();
56 /* send cmd: enable IRQ 1 */
58 kbd_empty_input_buffer();
60 /* reset kerboard and self test (keyboard side) */
63 /* empty inut bufferm or any other command/data will be lost */
64 kbd_empty_input_buffer();
66 /* empty output buffer or any other command/data will be lost */
67 kbd_empty_output_buffer();
69 if ((regval = inb(0x60) != 0xfa))
72 kbd_empty_output_buffer();
73 if ((regval = inb(0x60) != 0xaa))
77 void init_pc_keyboard(unsigned port0, unsigned port1, struct pc_keyboard *kbd)
79 if ((port0 == 0x60) && (port1 == 0x64)) {
80 pc_keyboard_init(kbd);