diff options
| author | Louis Yung-Chieh Lo | 2012-10-11 15:15:51 +0000 |
|---|---|---|
| committer | Tom Rini | 2012-10-19 15:25:43 -0700 |
| commit | 45fe668f5f6065f37836d5e941f36418fa3676cd (patch) | |
| tree | 7a99c1a78b68eb0d8430f919d8c731afee8b008d /include/i8042.h | |
| parent | 48edb304d05d5d8b410db74f6e497adcfb132430 (diff) | |
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 <yjlou@chromium.org>
Signed-off-by: Louis Yung-Chieh Lo <yjlou@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'include/i8042.h')
| -rw-r--r-- | include/i8042.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/i8042.h b/include/i8042.h index aeb3f090d03..c48c0573749 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); |