diff options
| author | Ian Moffett <ian@osmora.org> | 2024-05-12 23:05:58 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2024-05-12 23:11:00 -0400 |
| commit | b3c0e1e2f9bef74b395c9d9f670c93a8d8f5c725 (patch) | |
| tree | f7d112d37ca15ab04647538c18349a12ef123d8a /sys/arch/amd64 | |
| parent | bfb2bce1a7b4cb623e2ace5b6b2fa6718bd6e2bc (diff) | |
kernel/amd64: i8042: Prevent blinking capslock LED
Holding down the caps-lock key would result in the LED blinking rapidly
which is obviously not normal. This commit corrects that behavior.
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/arch/amd64')
| -rw-r--r-- | sys/arch/amd64/isa/i8042.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/sys/arch/amd64/isa/i8042.c b/sys/arch/amd64/isa/i8042.c index 9b9e254..dd1990f 100644 --- a/sys/arch/amd64/isa/i8042.c +++ b/sys/arch/amd64/isa/i8042.c @@ -48,6 +48,7 @@ __KERNEL_META("$Hyra$: i8042.c, Ian Marco Moffett, " static struct spinlock data_lock; static bool shift_key = false; static bool capslock = false; +static bool capslock_released = true; static int dev_send(bool aux, uint8_t data); @@ -96,8 +97,18 @@ scancode_to_chr(uint8_t sc, char *chr) bool release = __TEST(sc, __BIT(7)); switch (sc) { - /* Capslock */ + /* Capslock pressed */ case 0x3A: + /* + * If we are holding down caps-lock, we do not + * want a stream of presses that constantly cause + * it to toggle, only toggle if released then pushed + * again. + */ + if (!capslock_released) + return -EAGAIN; + + capslock_released = false; capslock = !capslock; if (!capslock) { @@ -106,6 +117,10 @@ scancode_to_chr(uint8_t sc, char *chr) kbd_set_leds(I8042_LED_CAPS); } return -EAGAIN; + /* Capslock released */ + case 0xBA: + capslock_released = true; + return -EAGAIN; /* Shift */ case 0x36: case 0xAA: |