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| author | Thomas Renninger <trenn@suse.de> | 2010-07-16 15:11:37 +0400 |
|---|---|---|
| committer | Matthew Garrett <mjg@redhat.com> | 2010-08-03 17:49:07 +0400 |
| commit | cd89e08fa020f5a882f922e3c9e2628235ca6715 (patch) | |
| tree | 6965292e5d169882fc6827a1a47d7702e0199028 /Documentation | |
| parent | 925b108918c9a2ac58b4fd0994f4a9e63e11521c (diff) | |
| download | linux-cd89e08fa020f5a882f922e3c9e2628235ca6715.tar.xz | |
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>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/debugfs-ec | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/debugfs-ec b/Documentation/ABI/testing/debugfs-ec new file mode 100644 index 000000000000..6546115a94da --- /dev/null +++ b/Documentation/ABI/testing/debugfs-ec @@ -0,0 +1,20 @@ +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. |