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authorGreg Kroah-Hartman <gregkh@suse.de>2011-03-11 12:41:19 -0500
committerMatthew Garrett <mjg@redhat.com>2011-03-28 06:28:12 -0400
commit2d70b73ae5b85c9d13f5dfbb8fc4fd5edae633dc (patch)
tree63823f6eed7ca8bfa487149e71c077a724d736d9 /Documentation/ABI/testing/sysfs-driver-samsung-laptop
parent298f19b2547ba11a577a15ca329daa6f4bbf5ad8 (diff)
Platform: add Samsung Laptop platform driver
This adds the samsung-laptop driver to the kernel. It now supports all known Samsung laptops that use the SABI interface. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Matthew Garrett <mjg@redhat.com>
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+What: /sys/devices/platform/samsung/performance_level
+Date: January 1, 2010
+KernelVersion: 2.6.33
+Contact: Greg Kroah-Hartman <gregkh@suse.de>
+Description: Some Samsung laptops have different "performance levels"
+ that are can be modified by a function key, and by this
+ sysfs file. These values don't always make a whole lot
+ of sense, but some users like to modify them to keep
+ their fans quiet at all costs. Reading from this file
+ will show the current performance level. Writing to the
+ file can change this value.
+ Valid options:
+ "silent"
+ "normal"
+ "overclock"
+ Note that not all laptops support all of these options.
+ Specifically, not all support the "overclock" option,
+ and it's still unknown if this value even changes
+ anything, other than making the user feel a bit better.