From 45fe668f5f6065f37836d5e941f36418fa3676cd Mon Sep 17 00:00:00 2001 From: Louis Yung-Chieh Lo Date: Thu, 11 Oct 2012 15:15:51 +0000 Subject: input: i8042: Provide feature to disable keyboard before booting kernel The BIOS leaves the keyboard enabled during boot time so that any keystroke would interfere kernel driver initialization. Add a way to disable the keyboard to make sure no scancode will be generated during the boot time. Note that the keyboard will be re-enabled again after the kernel driver is up. This code can be called from the board functions. Signed-off-by: Louis Yung-Chieh Lo Signed-off-by: Louis Yung-Chieh Lo Signed-off-by: Simon Glass Signed-off-by: Tom Rini --- include/i8042.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include') diff --git a/include/i8042.h b/include/i8042.h index aeb3f09..c48c057 100644 --- a/include/i8042.h +++ b/include/i8042.h @@ -75,6 +75,19 @@ enum { /* exports */ +/** + * Flush all buffer from keyboard controller to host. + */ +void i8042_flush(void); + +/** + * Disables the keyboard so that key strokes no longer generate scancodes to + * the host. + * + * @return 0 if ok, -1 if keyboard input was found while disabling + */ +int i8042_disable(void); + int i8042_kbd_init(void); int i8042_tstc(void); int i8042_getc(void); -- cgit v1.1