[PATCH 7/7] Documentation: Add new /sys/kernel/debug/ec/* files to ABI
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From: Thomas Renninger on 16 Jul 2010 07:20 Signed-off-by: Thomas Renninger <trenn(a)suse.de> CC: Alexey Starikovskiy <astarikovskiy(a)suse.de> CC: Len Brown <lenb(a)kernel.org> CC: linux-kernel(a)vger.kernel.org CC: linux-acpi(a)vger.kernel.org CC: platform-driver-x86(a)vger.kernel.org --- Documentation/ABI/testing/debugfs-ec | 20 ++++++++++++++++++++ 1 files changed, 20 insertions(+), 0 deletions(-) create mode 100644 Documentation/ABI/testing/debugfs-ec diff --git a/Documentation/ABI/testing/debugfs-ec b/Documentation/ABI/testing/debugfs-ec new file mode 100644 index 0000000..6546115 --- /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(a)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. -- 1.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |