sravan/system76-coreboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

libpayload/keyboard: Implement hot (un)plugging

Browse Source 
While we assume a keyboard is attached, we send an echo command every
500ms. If there is no data coming from the keyboard within 200ms, we
assume it was detached.

Correspondingly, if we assume no keyboard is attached, we run an echo
command once per second.

Change-Id: I2c75182761729bf30711305f3d8b9d43eafad675
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47593
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This commit is contained in:
Nico Huber
2020-11-08 21:32:18 +01:00
committed by Patrick Georgi
parent 5d884837f4
commit e97d320df2
2 changed files with 66 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
payloads/libpayload/drivers/i8042/i8042.h
View File

@@ -55,6 +55,7 @@
#define I8042_MODE_NUM_LOCK_OFF (0 << 1)
#define I8042_MODE_SCROLL_LOCK_ON (1 << 0)
#define I8042_MODE_SCROLL_LOCK_OFF (0 << 0)
#define I8042_KBCMD_ECHO 0xee
#define I8042_KBCMD_SET_SCANCODE 0xf0
#define I8042_KBCMD_SET_TYPEMATIC 0xf3
#define I8042_KBCMD_EN 0xf4