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ACPI / tools: Introduce ec_access.c - tool to access the EC
authorThomas Renninger <trenn@suse.de>
Mon, 7 Apr 2014 13:16:57 +0000 (15:16 +0200)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Mon, 28 Apr 2014 10:36:56 +0000 (12:36 +0200)
This userspace tool accesses the EC through the ec_sys debug driver
(through /sys/kernel/debug/ec/ec0/io).

The EC command/data registers cannot be accessed directly, because they
may be manipulated by the AML interpreter in parallel.

The ec_sys driver synchronizes user space (debug) access with the AML
interpreter.

Signed-off-by: Thomas Renninger <trenn@suse.de>
[rjw: Changelog]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
tools/power/acpi/Makefile patch | blob | history
tools/power/acpi/tools/ec/Makefile [new file with mode: 0644] patch | blob
tools/power/acpi/tools/ec/ec_access.c [new file with mode: 0644] patch | blob

diff --cc tools/power/acpi/Makefile
Simple merge
diff --cc tools/power/acpi/tools/ec/Makefile
Simple merge
diff --cc tools/power/acpi/tools/ec/ec_access.c
Simple merge
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