diff options
| author | Joshua Cov <joshuacov@googlemail.com> | 2012-04-13 21:08:26 +0200 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2012-05-08 14:19:41 -0700 |
| commit | b2d0b7a061bfddd27155c7dcd53f365d9dc0c7c3 (patch) | |
| tree | 8063c6df479723b7adc509ee2aad728889faa9a4 /arch/x86/boot/main.c | |
| parent | c2c21e9bb17549e8add4ff76931bcec2e2d3ad48 (diff) | |
| download | linux-b2d0b7a061bfddd27155c7dcd53f365d9dc0c7c3.tar.bz2 | |
keyboard: Use BIOS Keyboard variable to set Numlock
The PC BIOS does provide a NUMLOCK flag containing the desired state
of this LED. This patch sets the current state according to the data
in the bios.
[ hpa: fixed __weak declaration without definition, changed "inline"
to "static inline" ]
Signed-Off-By: Joshua Cov <joshuacov@googlemail.com>
Link: http://lkml.kernel.org/r/CAKL7Q7rvq87TNS1T_Km8fW_5OzS%2BSbYazLXKxW-6ztOxo3zorg@mail.gmail.com
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/boot/main.c')
| -rw-r--r-- | arch/x86/boot/main.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/arch/x86/boot/main.c b/arch/x86/boot/main.c index 40358c8905be..cf6083d444f4 100644 --- a/arch/x86/boot/main.c +++ b/arch/x86/boot/main.c @@ -57,14 +57,20 @@ static void copy_boot_params(void) } /* - * Set the keyboard repeat rate to maximum. Unclear why this + * Query the keyboard lock status as given by the BIOS, and + * set the keyboard repeat rate to maximum. Unclear why the latter * is done here; this might be possible to kill off as stale code. */ -static void keyboard_set_repeat(void) +static void keyboard_init(void) { - struct biosregs ireg; + struct biosregs ireg, oreg; initregs(&ireg); - ireg.ax = 0x0305; + + ireg.ah = 0x02; /* Get keyboard status */ + intcall(0x16, &ireg, &oreg); + boot_params.kbd_status = oreg.al; + + ireg.ax = 0x0305; /* Set keyboard repeat rate */ intcall(0x16, &ireg, NULL); } @@ -151,8 +157,8 @@ void main(void) /* Detect memory layout */ detect_memory(); - /* Set keyboard repeat rate (why?) */ - keyboard_set_repeat(); + /* Set keyboard repeat rate (why?) and query the lock flags */ + keyboard_init(); /* Query MCA information */ query_mca(); |