| 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. |