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2009-12-25 Robert Millan <rmh.grub@aybabtu.com>

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* include/grub/i386/at_keyboard.h (NUM_LOCK, SCROLL_LOCK): New macros.
	* term/i386/pc/at_keyboard.c (KEYBOARD_STATUS_NUM_LOCK)
	(KEYBOARD_LED_SCROLL, KEYBOARD_LED_NUM, KEYBOARD_LED_CAPS): New macros.
	(led_status): New variable.
	(keyboard_controller_led): New function.
	(grub_at_keyboard_getkey_noblock): Handle num lock and scroll lock,
	update led status for caps lock, num lock and scroll lock.
This commit is contained in:
Robert Millan 2009-12-25 20:33:41 +00:00
parent a22008a64f
commit 2281552630
3 changed files with 52 additions and 1 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
2009-12-25 Robert Millan <rmh.grub@aybabtu.com>
* include/grub/i386/at_keyboard.h (NUM_LOCK, SCROLL_LOCK): New macros.
* term/i386/pc/at_keyboard.c (KEYBOARD_STATUS_NUM_LOCK)
(KEYBOARD_LED_SCROLL, KEYBOARD_LED_NUM, KEYBOARD_LED_CAPS): New macros.
(led_status): New variable.
(keyboard_controller_led): New function.
(grub_at_keyboard_getkey_noblock): Handle num lock and scroll lock,
update led status for caps lock, num lock and scroll lock.
2009-12-25 Felix Zielcke <fzielcke@z-51.de>
* util/hostdisk.c (open_device): Fix a comment.

2
include/grub/i386/at_keyboard.h
View file

@ -25,6 +25,8 @@
#define CTRL 0x1d
#define ALT 0x38
#define CAPS_LOCK 0x3a
#define NUM_LOCK 0x45
#define SCROLL_LOCK 0x46
#define KEYBOARD_REG_DATA 0x60
#define KEYBOARD_REG_STATUS 0x64

41
term/i386/pc/at_keyboard.c
View file

@ -32,6 +32,13 @@ static short at_keyboard_status = 0;
#define KEYBOARD_STATUS_CTRL_L (1 << 4)
#define KEYBOARD_STATUS_CTRL_R (1 << 5)
#define KEYBOARD_STATUS_CAPS_LOCK (1 << 6)
#define KEYBOARD_STATUS_NUM_LOCK (1 << 7)
static grub_uint8_t led_status;
#define KEYBOARD_LED_SCROLL (1 << 0)
#define KEYBOARD_LED_NUM (1 << 1)
#define KEYBOARD_LED_CAPS (1 << 2)
static char keyboard_map[128] =
{
@ -80,6 +87,15 @@ grub_keyboard_controller_read (void)
return grub_inb (KEYBOARD_REG_DATA);
}
static void
keyboard_controller_led (grub_uint8_t led_status)
{
while (! KEYBOARD_COMMAND_ISREADY (grub_inb (KEYBOARD_REG_STATUS)));
grub_outb (0xed, KEYBOARD_REG_DATA);
while (! KEYBOARD_COMMAND_ISREADY (grub_inb (KEYBOARD_REG_STATUS)));
grub_outb (led_status & 0x7, KEYBOARD_REG_DATA);
}
/* FIXME: This should become an interrupt service routine. For now
it's just used to catch events from control keys. */
static void
@ -158,14 +174,37 @@ grub_at_keyboard_getkey_noblock (void)
switch (code)
{
case CAPS_LOCK:
at_keyboard_status ^= KEYBOARD_STATUS_CAPS_LOCK;
/* Caps lock sends scan code twice. Get the second one and discard it. */
while (grub_keyboard_getkey () == -1);
at_keyboard_status ^= KEYBOARD_STATUS_CAPS_LOCK;
led_status ^= KEYBOARD_LED_CAPS;
keyboard_controller_led (led_status);
#ifdef DEBUG_AT_KEYBOARD
grub_dprintf ("atkeyb", "caps_lock = %d\n", !!(at_keyboard_status & KEYBOARD_STATUS_CAPS_LOCK));
#endif
key = -1;
break;
case NUM_LOCK:
/* Num lock sends scan code twice. Get the second one and discard it. */
while (grub_keyboard_getkey () == -1);
at_keyboard_status ^= KEYBOARD_STATUS_NUM_LOCK;
led_status ^= KEYBOARD_LED_NUM;
keyboard_controller_led (led_status);
#ifdef DEBUG_AT_KEYBOARD
grub_dprintf ("atkeyb", "num_lock = %d\n", !!(at_keyboard_status & KEYBOARD_STATUS_NUM_LOCK));
#endif
key = -1;
break;
case SCROLL_LOCK:
/* For scroll lock we don't keep track of status. Only update its led. */
led_status ^= KEYBOARD_LED_SCROLL;
keyboard_controller_led (led_status);
key = -1;
break;
default:
if (at_keyboard_status & (KEYBOARD_STATUS_CTRL_L | KEYBOARD_STATUS_CTRL_R))
key = keyboard_map[code] - 'a' + 1;