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authorJoshua Cov <joshuacov@googlemail.com>2012-04-13 21:08:26 +0200
committerH. Peter Anvin <hpa@zytor.com>2012-05-08 14:19:41 -0700
commitb2d0b7a061bfddd27155c7dcd53f365d9dc0c7c3 (patch)
tree8063c6df479723b7adc509ee2aad728889faa9a4 /arch/x86/boot
parentc2c21e9bb17549e8add4ff76931bcec2e2d3ad48 (diff)
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')
-rw-r--r--arch/x86/boot/main.c18
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();