| What: /sys/kernel/debug/olpc-ec/cmd | |
| Date: Dec 2011 | |
| KernelVersion: 3.4 | |
| Contact: devel@lists.laptop.org | |
| Description: | |
| A generic interface for executing OLPC Embedded Controller commands and | |
| reading their responses. | |
| To execute a command, write data with the format: CC:N A A A A | |
| CC is the (hex) command, N is the count of expected reply bytes, and A A A A | |
| are optional (hex) arguments. | |
| To read the response (if any), read from the generic node after executing | |
| a command. Hex reply bytes will be returned, *whether or not* they came from | |
| the immediately previous command. |