MIRRORS/linux-yocto
1
0
Fork 0
mirror of git://git.yoctoproject.org/linux-yocto.git synced 2025-07-10 15:55:22 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity
00fec2a10b
linux-yocto/Documentation/ABI/testing/debugfs-ec
Thomas Renninger cd89e08fa0 Documentation: Add new /sys/kernel/debug/ec/* files to ABI 
Signed-off-by: Thomas Renninger <trenn@suse.de>

CC: Alexey Starikovskiy <astarikovskiy@suse.de>
CC: Len Brown <lenb@kernel.org>
CC: linux-kernel@vger.kernel.org
CC: linux-acpi@vger.kernel.org
CC: platform-driver-x86@vger.kernel.org
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03 09:49:07 -04:00

838 B
Raw Blame History

What: /sys/kernel/debug/ec/*/{gpe,use_global_lock,io} Date: July 2010 Contact: Thomas Renninger trenn@suse.de Description:

General information like which GPE is assigned to the EC and whether the global lock should get used. Knowing the EC GPE one can watch the amount of HW events related to the EC here (XY -> GPE number from /sys/kernel/debug/ec/*/gpe): /sys/firmware/acpi/interrupts/gpeXY

The io file is binary and a userspace tool located here: ftp://ftp.suse.com/pub/people/trenn/sources/ec/ should get used to read out the 256 Embedded Controller registers or writing to them.

CAUTION: Do not write to the Embedded Controller if you don't know what you are doing! Rebooting afterwards also is a good idea. This can influence the way your machine is cooled and fans may not get switched on again after you did a wrong write.