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>

1 files changed, 19 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-driver-samsung-laptop b/Documentation/ABI/testing/sysfs-driver-samsung-laptop
new file mode 100644
index 000000000000..0a810231aad4
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-samsung-laptop
@@ -0,0 +1,19 @@
+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.