add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/Documentation/ABI/obsolete/sysfs-driver-hid-roccat-pyra
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@@ -5,12 +5,15 @@
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 		press of a button.
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 		When read, this file returns the raw number of the actual cpi
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 		setting reported by the mouse. This number has to be further
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-		processed to receive the real dpi value.
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+		processed to receive the real dpi value:
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+		===== ====
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 		VALUE DPI
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+		===== ====
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 		1     400
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 		2     800
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 		4     1600
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+		===== ====
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 		This file is readonly.
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 		Has never been used. If bookkeeping is done, it's done in userland tools.