1*4882a593SmuzhiyunWhat: /sys/kernel/debug/olpc-ec/cmd 2*4882a593SmuzhiyunDate: Dec 2011 3*4882a593SmuzhiyunKernelVersion: 3.4 4*4882a593SmuzhiyunContact: devel@lists.laptop.org 5*4882a593SmuzhiyunDescription: 6*4882a593Smuzhiyun 7*4882a593SmuzhiyunA generic interface for executing OLPC Embedded Controller commands and 8*4882a593Smuzhiyunreading their responses. 9*4882a593Smuzhiyun 10*4882a593SmuzhiyunTo execute a command, write data with the format: CC:N A A A A 11*4882a593SmuzhiyunCC is the (hex) command, N is the count of expected reply bytes, and A A A A 12*4882a593Smuzhiyunare optional (hex) arguments. 13*4882a593Smuzhiyun 14*4882a593SmuzhiyunTo read the response (if any), read from the generic node after executing 15*4882a593Smuzhiyuna command. Hex reply bytes will be returned, *whether or not* they came from 16*4882a593Smuzhiyunthe immediately previous command. 17