diff options
| author | Ian Moffett <ian@osmora.org> | 2025-08-20 03:54:35 +0000 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2025-08-20 04:00:20 +0000 |
| commit | 74101c4128d8a4fc0e71be329865ca5d21c96ace (patch) | |
| tree | de392531fc0bcd752e95a27fb5a921a08e6fe9e0 /sys/include/arch | |
| parent | b3cb4bb6737585dc72c72b8c0f3ffc94408fb22d (diff) | |
kernel/amd64: Add initial ext scancode support
Most keyboards nowadays support extended scancodes which are multi-byte
packets prefixed with a 0xE0 byte to represent non-standard special
keys. This commit introduces the initial groundwork for supporting such
scancodes.
- i8042_drain() now takes a (nullable) pointer to a i8042 data buffer
which will hold bytes drained
- Made some timing adjustments between i8042 register reads in the
i8042_drain() function
- Removed nonessential and contentious locks which choked up input
performance
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/include/arch')
| -rw-r--r-- | sys/include/arch/amd64/isa/i8042var.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/include/arch/amd64/isa/i8042var.h b/sys/include/arch/amd64/isa/i8042var.h index 13c3095..9619920 100644 --- a/sys/include/arch/amd64/isa/i8042var.h +++ b/sys/include/arch/amd64/isa/i8042var.h @@ -74,6 +74,10 @@ #define I8042_LED_NUM BIT(1) #define I8042_LED_CAPS BIT(2) +/* Extended scancode types */ +#define I8042_XSC_ENDPR 0 /* End pressed */ +#define I8042_XSC_ENDRL 1 /* End released */ + /* Quirks */ #define I8042_HOSTILE BIT(0) /* If EC likes throwing NMIs */ |